JP7770591B2 - Packaging materials and methods - Google Patents

Description

This disclosure relates to packaging materials and packaging methods, and in particular to packaging materials and packaging methods used for packaging heavy products.

Conventionally, when packaging a large refrigerator, a type of heavy home appliance, the top, sides, and bottom of the product are covered with packaging material, which is secured in place with bands. Packaging of the top of the product can be done using only top cushioning material, only top cardboard, or both top cushioning material and top cardboard. Packaging of the sides of the product typically involves using side cardboard and covering the sides with only the side cardboard. Packaging of the bottom of the product can involve using only floor cushioning material on which the product is placed, or both floor cushioning material and cardboard. These packaging materials are molded to fit the shape of the product being packaged. Products such as refrigerators are packaged with packaging material secured to the product with bands.

When transporting a refrigerator covered in packaging material, a transporter may hold the handles on the side cardboard, tilt the refrigerator, and place their hands on the handles on the cushioning material or the cardboard on the floor to lift and transport the refrigerator. Furthermore, when shipping a refrigerator, a transporter may push the side cardboard of the refrigerator while loading the packaged refrigerator onto a truck. In such cases, the cardboard may come into contact with the product due to contact with the transporter's body or knees, pushing the cardboard inward and causing scratches or dents on the side of the product. To address this issue, a packaging material has been developed that provides cushioning material in the center of the inner side of the cardboard, creating a gap between the cardboard and the product. This prevents scratches and dents on the product even when the cardboard is pressed against the product, for example, by pressing a knee against it (see, for example, Patent Document 1).

Japanese Utility Model Application Laid-Open Publication No. 1-164176

In packaging materials like the one described in Patent Document 1, which provides cushioning material in the center of one of the product's four sides, cardboard side panels are attached to the product so that they cover the cushioning material, and the side panels are secured with bands at positions spaced apart from the cushioning material on both sides. Consider a clamp-type forklift lifting a product by clamping such packaging material containing a product with attachments (arm or bale clamps) on both sides. The cushioning material supports the side panels in the areas where they overlap with the cushioning material, minimizing deformation of the side panels. Meanwhile, at the corners of the side panels, where the left and right bands are secured, the side panels bend inward, resulting in protruding corners. When such packaging material is clamped with attachments on both sides, the force applied by the attachments is concentrated at the corners, causing deformation of the corners and their surrounding areas. This can lead to wrinkles or tears in the side panels near the corners. When wrinkles or tears occur in the side panels, the transporter needs to check the product for scratches or dents. The only way for a transporter to check for scratches or dents on a product is to remove the packaging from the product and check the surface of the product. Therefore, if wrinkles or tears occur on the side panels of the packaging during transport, the transporter has to go through the trouble of checking the surface condition of the product.

The present disclosure is intended to solve the above-mentioned problems and aims to provide a packaging material and packaging method that prevents wrinkles or tears in the side cardboard panels, which serve as the side panels, and prevents scratches or dents on the product when the packaging material containing the product is clamped from the sides and lifted for transport.

The packaging material according to the present disclosure comprises a cylindrical cardboard side panel surrounding the housing of a product having a housing, and a plurality of flat cushioning materials that are detachably attached to the side panel that forms the side of the housing and are covered by the cardboard side panel, the plurality of cushioning materials including a pair of cushioning materials attached to both ends of the side panel when viewed in a first direction that is the axial direction of the cardboard side panel and along the surface of the side panel, and formed to extend in the first direction, the pair of cushioning materials having contact surfaces that contact the inner surface of the cardboard side panel surrounding the housing, and arranged between the cardboard side panel and the housing to support the cardboard side panel from the side where the housing is placed by the contact surfaces , the cardboard side panel having a fold line portion formed in a mountain fold on the side adjacent to the side of the cardboard side supported by the cushioning material so as to protrude toward the opposite side from the side where the product to be packed in the cardboard side is placed, and the plurality of cushioning materials have chamfered C-shaped portions at the corners of the cushioning materials on the side where the corners of the cardboard side are placed when viewed in the first direction .

The packaging method according to the present disclosure is a packaging method for a product having a housing, using cylindrical cardboard side panels that surround the housing and a plurality of flat cushioning materials that are detachably attached to the side panels that form the side surfaces of the housing and are covered by the cardboard side panels, wherein the plurality of cushioning materials include a pair of cushioning materials that are attached to both ends of the side panels when viewed in a first direction that is the axial direction of the cardboard side panels and along the surface of the side panels, and that are formed to extend in the first direction, and the pair of cushioning materials have contact surfaces that contact the inner surface of the cylindrical cardboard side panels that surround the housing, and the pair of cushioning materials are arranged between the cardboard side panels and the housing, and support the cardboard side panels from the side where the housing is located by the contact surfaces, and the cardboard side panels have a fold line portion that is formed in a mountain fold shape on the side adjacent to the side of the cardboard side that is supported by the cushioning material so as to protrude toward the opposite side from the side where the product to be packaged in the cardboard side panels is located, and the corners of the cushioning materials on the side where the corners of the cardboard side panels are located when viewed in the first direction .

The packaging material and packaging method disclosed herein include a pair of cushioning materials attached to both ends of the side portion when viewed in a first direction, which is the axial direction of the side corrugated cardboard and along the surface of the side portion, and formed to extend in the first direction. The pair of cushioning materials are detachably attached to both ends of the side portion and positioned between the side corrugated cardboard and the housing, separating the side portion from the side corrugated cardboard, and supporting the side corrugated cardboard from the inside with their contact surfaces. Therefore, even when the side corrugated cardboard is wrapped around and secured to a product with multiple bands, the cushioning material and packaging material prevent the force of the attachment of a clamp-type forklift used to transport the product from being concentrated on the corners of the product. The packaging material and packaging method, as described above, prevent the force of the attachment from being concentrated on the corners of the product during transport, thereby preventing wrinkles from occurring in the side corrugated cardboard and preventing tears from occurring in the side corrugated cardboard.

1 is a perspective view of a packaging material according to a first embodiment, in which a product is packaged; FIG. 1 is a perspective view of a packaging material showing a configuration in which the top cardboard and side cardboard have been removed from the packaging material of embodiment 1. FIG. FIG. 3 is a top view of the floor cushioning material and floor cardboard shown in FIG. 2 . 1 is a top view of the cushioning material and side cardboard provided in the packaging material according to the first embodiment. FIG. FIG. 2 is a front view of a cushioning material of the packaging material according to the first embodiment. FIG. 2 is a side view of a cushioning material of the packaging material according to the first embodiment. FIG. 4 is a rear view of the cushioning material of the packaging material according to the first embodiment. 2 is a conceptual diagram showing the relationship between the product, cushioning material, and side cardboard in the packaging material of FIG. 1. [0023]FIG. 1 is a perspective view of a packaging material according to the first embodiment, which has a modified cushioning material. FIG. FIG. 10 is a front view of the buffer material of the modified example shown in FIG. 9 . FIG. 11 is a side view of the buffer material of the modified example shown in FIG. 10 . FIG. 10 is a rear view of the cushioning material of the modified example shown in FIG. 9 . 2 is a conceptual diagram showing the relationship between the product, the cushioning material of the modified example, and the side cardboard in the packaging material of FIG. 1. [0023]FIG. FIG. 10 is a perspective view of a packaging material according to a comparative example, in which a product is packaged. 1 is a conceptual diagram showing an example of a clamp-type forklift that transports a product packed in a packing material according to the first embodiment. FIG. FIG. 16 is a conceptual diagram showing an example of transporting packaging materials in which products are packed using the clamp-type forklift shown in FIG. 15 . FIG. 1 is a front view of the inner surface of the attachment. FIG. 10 is a front view of the inner surface of an attachment according to a comparative example. FIG. 10 is a top view of the attachment and the packaging material when the packaging material does not have cushioning material on the side surfaces of the product. 1 is a top view of an attachment and a packaging material when the packaging material of embodiment 1 is used. FIG. FIG. 10 is a top view of the attachment and the packaging material when the packaging material of the comparative example is used. FIG. 10 is a top view of the attachment and the packaging material when the packaging material of the comparative example is used. FIG. 10 is a top view of the top cushioning material and side cardboard of the packaging material according to the second embodiment. FIG. 24 is a top view showing the top surface cushioning material shown in FIG. 23 alone. FIG. 11 is a top view of the cushioning material and side cardboard of the packaging material according to the third embodiment. An enlarged view of the corner of the side cardboard and its surrounding area of the packaging material of embodiment 3. FIG. 10 is a perspective view of the floor cushioning material and floor cardboard of the packaging material according to the fourth embodiment. FIG. 10 is a top view of the floor cushioning material and floor cardboard of the packaging material according to the fourth embodiment. FIG. 10 is an exploded perspective view of a floor cushioning material of a packaging material according to a fourth embodiment. 10 is a vertical cross-sectional view of the floor cushioning material of the packaging material in accordance with embodiment 4, taken along the longitudinal direction thereof. FIG.

The following describes several packaging materials and packaging methods according to embodiments of the present disclosure, with reference to the drawings. In the following drawings, items with the same reference numerals are the same or equivalent, and are common throughout the embodiments described below. The shapes of the components shown in the entire specification are merely examples and are not limited to the shapes described in the specification. In addition, the size relationships between the components in the drawings may differ from the actual relationships. Note that in the present embodiments, directional terms (e.g., "up," "down," "right," "left," "front," "rear," etc.) are used as appropriate to facilitate understanding, but these terms are for explanatory purposes and do not limit the present disclosure.

Embodiment 1.
[Configuration of packaging material 100]
FIG. 1 is a perspective view of packaging material 100 according to embodiment 1, showing a state in which product 200 is packaged. FIG. 2 is a perspective view of packaging material 100 according to embodiment 1, showing a configuration in which top cardboard 60 and side cardboard 50 have been removed. FIG. 3 is a top view of floor cushioning material 10 and floor cardboard 40 shown in FIG. 2. FIG. 4 is a top view of cushioning material 20 and side cardboard 50 provided in packaging material 100 according to embodiment 1. The lower sides of FIGS. 3 and 4 correspond to the front side of product 200. The configuration of packaging material 100 will be described with reference to FIGS. 1 to 4.

[Packaged object of packaging material 100]
Product 200, which is the object to be packed in packaging material 100, is a refrigerator. In the following description, product 200 to be packed in packaging material 100 will be described as a refrigerator, but product 200 to be packed in packaging material 100 is not limited to a refrigerator. Product 200 may be any product other than a refrigerator, such as an outdoor unit of an air conditioner or a vending machine, as long as it has a side that can be clamped using a clamp-type forklift.

The X-axis, Y-axis, and Z-axis shown in Figure 1 and subsequent figures represent the axial directions when the opening/closing surface of the refrigerator door 220, which is the product 200, is considered to be the front side of the packaging material 100. Therefore, the X-axis indicates the left-right width direction of the packaging material 100, with the X1 side being the left and the X2 side being the right. The Y-axis indicates the front-to-back depth direction of the packaging material 100, with the Y1 side being the front side and the Y2 side being the rear side. Furthermore, the Z-axis indicates the up-to-down direction of the packaging material 100, with the Z1 side being the top and the Z2 side being the bottom.

The refrigerator, which is the product 200 to be packaged, is a box or chamber designed to maintain a low temperature inside, and is used to cool and store food and other items. The refrigerator is shaped like a column, for example, a rectangular parallelepiped. As shown in Figure 2, the product 200 has a bottom surface 211, side surfaces 212, and a top surface 213. As shown in Figure 4, the side surfaces 212 of the product 200 include a front surface 212a, a left side surface 212b, a rear surface 212c, and a right side surface 212d. The front surface 212a of the product 200 is formed by a door 220. The top surface 213 of the product 200 may also be referred to as the top surface of the product 200 or the ceiling surface of the product 200.

Product 200 has a housing 210 that forms the outer shell, and at least one door 220 attached to housing 210. Housing 210 is formed in a columnar shape, for example, a rectangular parallelepiped shape. Housing 210 has at least one storage space formed therein for storing stored items, and an opening 215 is formed in the front side portion 212a of housing 210 for putting stored items in and taking them out of the storage space.

The housing 210 has, for example, an outer box made of steel plate that forms the outer shell, and an inner box made of thin-walled hard resin such as ABS resin that is placed inside the outer box, with a heat insulating material such as hard urethane foam filled between the outer and inner boxes. The door 220 is provided on the front side of the housing 210 and is used to open and close the opening 215 of the housing 210. The door 220 of the product 200 may be, for example, a double door or a drawer door.

The left side surface 212b, rear side surface 212c, and right side surface 212d of the product 200 are formed by the housing 210. In other words, the left side surface 212b, rear side surface 212c, and right side surface 212d of the product 200 are the left side surface 212b, rear side surface 212c, and right side surface 212d of the housing 210. The front side portion of the housing 210 forms the opening 215. The front side surface 212a of the product 200 is formed by the front side portion of the door 220.

[Packaging material 100]
The packaging material 100 is a packaging material for packaging the product 200. The packaging material 100 is used to wrap the product 200 to prevent damage and contamination during transportation of the product 200. The packaging material 100 protects the product 200, which is the object to be packaged, and has impact resistance to protect the product 200 from contact during handling and pressure resistance to protect the product 200 from pressure applied to the product 200. The packaging material 100 includes a plurality of cushioning materials 20 that are detachably attached to side portions 212 that form the sides of the housing 210 of the product 200 that includes a housing 210, and are covered by cylindrical side cardboard 50 that surrounds the housing 210.

As shown in Figures 1 to 3, the packaging material 100 comprises a floor cushioning material 10, cushioning material 20, and top cushioning material 30 that are attached to the product 200 to be packaged. The packaging material 100 also comprises a floor cardboard 40, side cardboard 50, and top cardboard 60 that are attached to the product 200 to be packaged via the floor cushioning material 10, cushioning material 20, or top cushioning material 30. Furthermore, the packaging material 100 comprises bands 70 that are attached to the outside of the floor cardboard 40, side cardboard 50, and top cardboard 60 around the product 200.

(Floor cushioning material 10)
Floor cushioning material 10 protects the lower part of refrigerator, which is product 200, to be packaged. Floor cushioning material 10 is attached along a portion that forms one side of the underside of housing 210, and supports product 200 on floor cardboard 40. Floor cushioning material 10 is attached to product 200 so as to cover the lower part of refrigerator, which is product 200, from below. When attached to product 200, floor cushioning material 10 covers at least a portion of bottom surface 211 of product 200. Product 200, which is the product to be packaged, is placed on floor cushioning material 10.

The packaging material 100 has a pair of floor cushioning materials 10 arranged along opposing sides of the bottom surface 211 of the product 200 in the left-right direction (X-axis direction) of the product 200. The floor cushioning materials 10 are attached to portions that form opposing sides of the underside of the housing 210 when the housing 210 is viewed in the first direction D1 (see Figure 2).

A pair of floor cushioning materials 10 on which the product 200 is placed is placed inside the cardboard floor 40 as shown in Figure 3, and is fixed to the cardboard floor 40 in a state separated into left and right sides inside the cardboard floor 40. The pair of floor cushioning materials 10 is placed along the left and right cardboard side portions 42 of the cardboard floor 40, which will be described later, as shown in Figure 3.

As shown in FIG. 3, the floor cushioning material 10 attached to the lower right portion of the product 200 is referred to as the right floor cushioning material 10a, and the floor cushioning material 10 attached to the lower left portion of the product 200 is referred to as the left floor cushioning material 10b. Floor cushioning material 10 is a collective term for the right floor cushioning material 10a and the left floor cushioning material 10b. In the packaging material 100 of embodiment 1, the right floor cushioning material 10a and the left floor cushioning material 10b are formed as separate bodies, but the right floor cushioning material 10a and the left floor cushioning material 10b may also be formed as a single body.

The right floor cushioning material 10a and the left floor cushioning material 10b are a pair of floor cushioning materials 10 on which the lower part of the product 200 is placed. The right floor cushioning material 10a and the left floor cushioning material 10b are arranged with a gap between them in the left-right direction (X-axis direction) of the product 200. The right floor cushioning material 10a and the left floor cushioning material 10b are molded from a synthetic resin material such as polystyrene foam.

The floor cushioning material 10 is formed to extend in the depth direction (Y-axis direction) of the product 200. The floor cushioning material 10 is also formed to extend in the left-right direction (X-axis direction) of the product 200. The floor cushioning material 10 is formed to be longer in the depth direction (Y-axis direction) of the product 200 than in the left-right direction (X-axis direction) of the product 200. The floor cushioning material 10 is formed to have a thickness in the up-down direction (Z-axis direction) of the product 200.

When viewed in the vertical direction (Z-axis direction) of the product 200, the floor cushioning material 10 includes a floor-side main body portion 11 that extends in the depth direction (Y-axis direction) of the product 200, and a plurality of protrusions 12 that protrude from the floor-side main body portion 11 in the left-right direction (Y-axis direction) of the product 200.

When viewed in the vertical direction (Z-axis direction) of the product 200, the protrusion 12 is formed to be located toward the center of the product 200 relative to the floor-side main body 11 in the left-right direction (X-axis direction) of the product 200. When viewed in the vertical direction (Z-axis direction) of the product 200, the protrusion 12 is formed to extend from the floor-side main body 11 toward the center of the product 200 in the left-right direction (X-axis direction) of the product 200. When the right floor cushioning material 10a and the left floor cushioning material 10b are attached to the product 200, the protrusion 12 of the right floor cushioning material 10a extends toward the side where the left floor cushioning material 10b is located, and the protrusion 12 of the left floor cushioning material 10b extends toward the side where the right floor cushioning material 10a is located.

The floor cushioning material 10 includes a cutout 13 that forms a cutout-shaped portion when viewed in the vertical direction (X-axis direction) of the product 200. The cutout 13 forms a space that penetrates the product 200 in the vertical direction (Z-axis direction). When viewed in the vertical direction (Z-axis direction) of the product 200, the cutout 13 is formed so that its opening is located toward the center of the product 200 in the left-right direction (X-axis direction) of the product 200, and the opening of the cutout 13 opens toward the center. The cutout 13 is formed by a portion that is connected and surrounded by the floor-side main body 11 and the protrusion 12, and is formed by the side walls of the floor-side main body 11 and the protrusion 12.

(Buffer material 20)
Packaging material 100 has a plurality of cushioning materials 20. Cushioning materials 20 are used for packaging and protect side surfaces 212 of a refrigerator, which is product 200, to be packaged. Cushioning materials 20 are removably attached to side surfaces 212 of a refrigerator, which is product 200, to be packaged. Cushioning materials 20 are fixed to housing 210 of product 200 by tape, a sticker provided on the back surface of cushioning materials 20, or the like.

When the cushioning material 20 is fixed to the side cardboard box 50, if the cushioning material 20 is attached to the inner surface 50b of the side cardboard box 50 with tape, a sticker, or the like, there is a risk that the cushioning material 20 will come off when the side cardboard box 50 is transported. Furthermore, when the cushioning material 20 is fixed to the side cardboard box 50, if the cushioning material 20 is attached to the inner surface 50b of the side cardboard box 50 with tape, a sticker, or the like, the cushioning material 20 will come into contact with the product 200 when the side cardboard box 50 is placed over the product 200, making it prone to coming off the side cardboard box 50.

For this reason, it is desirable to fix the cushioning material 20 to the inner surface 50b of the cylindrical cardboard side 50 with adhesive, but in this case, there is the problem that it takes time for the adhesive to harden. Furthermore, when the cushioning material 20 is fixed to the inner surface 50b of the cardboard side 50, the thickness of the cardboard side 50 in its folded state is increased by the cushioning material 20 attached to the inner surface 50b, which makes it difficult to transport the cardboard side 50 in a stacked folded state.

In addition, the side cardboard panel 50 is attached to the housing 210 so as to cover it from above, surrounding the housing 210. However, if the cushioning material 20 is fixed to the inner surface 50b of the side cardboard panel 50, there is a problem that the cushioning material 20 comes into contact with the housing 210 when the side cardboard panel 50 is attached, causing damage to the housing 210.

To solve these problems, the cushioning material 20 is fixed to the side portion 212 of the housing 210 with tape or a sticker, rather than to the side cardboard 50. The cushioning material 20 does not need to be attached to the floor cushioning material 10, the top cushioning material 30, the floor cardboard 40, or the side cardboard 50.

The multiple cushioning materials 20 are detachably attached to the side surface portions 212 that form the sides of the housing 210 of a product 200 that includes a housing 210, and are covered by a cylindrical cardboard side surface 50 that surrounds the housing 210. The cushioning materials 20 are positioned between the cardboard side surface 50 and the housing 210, separating the cardboard side surface portion 212 of the product 200 from the cardboard side surface 50. The cushioning materials 20 support the cardboard side surface 50 from the inside of the cylindrical cardboard side surface 50. Note that the cushioning materials 20 may also be referred to as side cushioning materials, as they are cushioning materials attached to the sides of the packaged item.

2, the multiple cushioning materials 20 include a pair of cushioning materials 20 attached to both ends of the side surface portion 212 when viewed in a first direction D1, which is the axial direction of the side surface cardboard 50 and along the surface of the side surface portion 212, and formed to extend in the first direction D1. The first direction D1 is the axial direction of the side surface cardboard 50, which is formed in a cylindrical shape. The first direction D1 is also a direction perpendicular to the top surface portion 213 and bottom surface portion 211 of the side surface portion 212 of the housing 210. The both ends of the side surface portion 212 are opposite ends in a second direction D2 perpendicular to the first direction D1, and are both ends in the depth direction (Y-axis direction).

The pair of cushioning materials 20 are spaced apart in the second direction D2. The second direction D2 is a direction along the surface of the side portion 212 and perpendicular to the first direction D1. Note that in Figure 2, the first direction D1 and the second direction D2 are indicated by white arrows. The first direction D1 is, for example, the up-down direction (Z-axis direction), and the second direction D2 is the depth direction (Y-axis direction).

A pair of cushioning materials 20 are attached to the left side surface 212b of the housing 210 of the product 200. The pair of cushioning materials 20 are arranged with a space between them in the depth direction (Y-axis direction) of the product 200. Similarly, a pair of cushioning materials 20 are attached to the right side surface 212d of the housing 210 of the product 200. The cushioning materials 20 are formed to be long, and are attached to the housing 210 so that the longitudinal direction of the cushioning materials 20 is the up-down direction (Z-axis direction) of the product 200. The up-down direction (Z-axis direction) is the direction perpendicular to the bottom surface 211 of the product 200.

2 and 4, the packaging material 100 has a pair of cushioning materials 20 attached along the edges located on both sides in the depth direction (Y-axis direction) of the left side surface 212b of the housing 210. The pair of cushioning materials 20 are attached to the left side surface 212b of the housing 210 along the front edge 212b1 and rear edge 212b2 of the left side surface 212b. The front edge 212b1 is the part that forms the front edge of the left side surface 212b of the housing 210 in the depth direction (Y-axis direction), and the rear edge 212b2 is the part that forms the rear edge of the left side surface 212b of the housing 210 in the depth direction (Y-axis direction).

Similarly, as shown in Figure 4, the packaging material 100 has a pair of cushioning materials 20 attached along the edges located on both sides in the depth direction (Y-axis direction) of the right side surface 212d of the housing 210. The pair of cushioning materials 20 are attached to the right side surface 212d of the housing 210 along the front edge 212d1 and rear edge 212d2 of the right side surface 212d. The front edge 212d1 is the part that forms the front edge of the right side surface 212d of the housing 210 in the depth direction (Y-axis direction), and the rear edge 212d2 is the part that forms the rear edge of the right side surface 212d of the housing 210 in the depth direction (Y-axis direction).

2 and 4, the cushioning material 20 attached to the front portions of the left side surface 212b and right side surface 212d of the housing 210 is referred to as the first side surface cushioning material 20a. Furthermore, the cushioning material 20 attached to the rear portions of the left side surface 212b and right side surface 212d of the housing 210 is referred to as the second side surface cushioning material 20b. Cushioning material 20 is a collective term for the first side surface cushioning material 20a and the second side surface cushioning material 20b. The front portions of the left side surface 212b and right side surface 212d of the housing 210 are the portions on the door 220 side in the depth direction (Y-axis direction). The rear portions of the left side surface 212b and right side surface 212d of the housing 210 are the portions on the opposite side of the door 220 in the depth direction (Y-axis direction).

The first side cushioning material 20a attached to the left side surface portion 212b is positioned along the front edge 212b1 of the left side surface portion 212b. The first side cushioning material 20a is positioned closer to the front edge 212b1 than the center of the left side surface portion 212b in the depth direction (Y-axis direction). The second side cushioning material 20b attached to the left side surface portion 212b is positioned along the rear edge 212b2 of the left side surface portion 212b. The second side cushioning material 20b is positioned closer to the rear edge 212b2 than the center of the left side surface portion 212b in the depth direction (Y-axis direction).

The first side cushioning material 20a attached to the right side surface portion 212d is positioned along the front edge 212d1 of the right side surface portion 212d. The first side cushioning material 20a is positioned closer to the front edge 212d1 than the center of the right side surface portion 212d in the depth direction (Y-axis direction). The second side cushioning material 20b attached to the right side surface portion 212d is positioned along the rear edge 212d2 of the right side surface portion 212d. The second side cushioning material 20b is positioned closer to the rear edge 212d2 than the center of the right side surface portion 212d in the depth direction (Y-axis direction).

If the product 200 to be packed is a refrigerator, providing cushioning material 20 on the front or side of the door 220 poses a risk of deformation when the product 200 is clamped using a clamp-type forklift. To avoid this, if the product 200 to be packed is a refrigerator, the cushioning material 20 is attached to the housing 210. The cushioning material 20 is attached to the left side 212b and right side 212d of the housing 210, avoiding the door 220 of the product 200. However, if the product 200 to be packed is something other than a refrigerator, this is not the only option, and the cushioning material 20 may be attached to the door of the product 200, etc.

As shown in FIG. 2 , a handle 230 may be provided on the upper rear portion of the product 200. The handle 230 is a portion on which an operator places their hand when transporting the product 200. When the cushioning material 20 is attached near the handle 230, the cushioning material 20 is attached to the left side surface 212b and the right side surface 212d, for example, so as to be positioned lower than the handle 230 to avoid interference with the handle 230. Furthermore, the cushioning material 20 does not need to be fixed to the floor cushioning material 10 or the cardboard floor side surface 42. Therefore, the floor cushioning material 10 does not need to have an opening or other configuration for attaching the cushioning material 20. To avoid interference with the cardboard floor side surface 42, which constitutes the upper edge of the cardboard floor 40, the cushioning material 20 is attached to the left side surface 212b and the right side surface 212d so as to be spaced apart from the cardboard floor side surface 42 and positioned higher than the cardboard floor side surface 42.

5 is a front view of the cushioning material 20 of the packaging material 100 according to embodiment 1. FIG. 6 is a side view of the cushioning material 20 of the packaging material 100 according to embodiment 1. FIG. 7 is a rear view of the cushioning material 20 of the packaging material 100 according to embodiment 1. The front view of FIG. 5 is a view showing the cushioning material 20 when attached to the left side surface 212b of the product 200, as viewed from the front of the left side surface 212b. Alternatively, the front view of FIG. 5 is a view showing the cushioning material 20 when attached to the right side surface 212d of the product 200, as viewed from the front of the right side surface 212d. The side view of FIG. 6 is a view showing the cushioning material 20 when attached to the left side surface 212b or right side surface 212d of the product 200, as viewed from the depth direction (Y-axis direction) of the product 200. 7 is a view showing the back side of the cushioning material 20 shown in the front view of Fig. 5. The structure of the cushioning material 20 will be described with reference to Figs. 5 to 7.

The cushioning material 20 is formed long and has inclined portions 22 at both longitudinal ends. That is, the cushioning material 20 has inclined portions 22 at the top and bottom ends that form portions that are angled in side view. When a worker places the side cardboard 50 over the cushioning material 20 attached to the product 200, the inclined portions 22 serve as a guide when moving the side cardboard 50. The inclined portions 22 are provided, for example, from each of the top and bottom ends of the cushioning material 20 toward the center, up to a position 90 mm.

The inclined portion 22 is a portion of the cushioning material 20 that forms an inclined surface. The inclined portion 22 is formed so that the thickness between the mounting surface portion 27, which is the surface that comes into contact with the product 200, and the inclined surface 28, which is the surface opposite the mounting surface portion 27, becomes thinner from the center of the cushioning material 20 toward the end in the longitudinal direction of the cushioning material 20. In other words, the inclined portion 22 is formed so that it tapers from the center of the cushioning material 20 toward the end in the longitudinal direction of the cushioning material 20. The inclined portion 22 has an inclined surface 28. The inclined surface 28 is the surface opposite the mounting surface portion 27 that comes into contact with the product 200, and is inclined with respect to the extension direction of the mounting surface portion 27. In a side view of the cushioning material 20, the inclined surface 28 and the mounting surface portion 27 form an acute angle.

When the cushioning material 20 is attached to the left side surface 212b of the product 200, the inclined surface 28 located at the upper end of the cushioning material 20 is inclined so that it has a component facing upward on the product 200 and a component facing in the direction in which the surface of the left side surface 212b faces. Furthermore, when the cushioning material 20 is attached to the left side surface 212b of the product 200, the inclined surface 28 located at the lower end of the cushioning material 20 is inclined so that it has a component facing downward on the product 200 and a component facing in the direction in which the surface of the left side surface 212b faces.

Similarly, when the cushioning material 20 is attached to the right side surface 212d of the product 200, the inclined surface 28 located on the upper end side of the cushioning material 20 is inclined so as to have a component facing upward on the product 200 and a component facing in the direction in which the surface of the right side surface 212d faces. Furthermore, when the cushioning material 20 is attached to the right side surface 212d of the product 200, the inclined surface 28 located on the lower end side of the cushioning material 20 is inclined so as to have a component facing downward on the product 200 and a component facing in the direction in which the surface of the right side surface 212d faces.

Figure 8 is a conceptual diagram showing the relationship between the product 200, cushioning material 20, and side cardboard 50 in the packaging material 100 of Figure 1. Note that in Figure 8, the cutouts 23 formed inside the cushioning material 20 are represented by dotted lines. As shown in Figures 5 to 8, the cushioning material 20 has a contact surface portion 21 and an attachment surface portion 27. The cushioning material 20 is provided in the gap S between the product 200 and the side cardboard 50. In other words, the cushioning material 20 forms a gap S between the outer wall surface of the product 200 and the inner wall surface of the side cardboard 50.

The pair of cushioning materials 20 have contact surface portions 21 that contact the inner surface 50b of the cylindrical side cardboard 50 that surrounds the housing 210. The pair of cushioning materials 20 are positioned between the side cardboard 50 and the housing 210, and support the side cardboard 50 from the side where the housing 210 is located by the contact surface portions 21.

The contact surface portion 21 is the surface that comes into contact with the inner wall of the side cardboard box 50 when the side cardboard box 50 is attached to the product 200. The inner wall of the side cardboard box 50 is the wall that forms the surface facing the product 200 when the side cardboard box 50 is attached to the product 200. The contact surface portion 21 of the cushioning material 20 abuts against the side cardboard box 50 and supports the side cardboard box 50 from the inside when the side cardboard box 50 is placed over the cushioning material 20 attached to the product 200.

The mounting surface portion 27 is attached to the side surface portion 212 of the housing 210 when the cushioning material 20 is attached to the product 200, and forms the surface that abuts against the housing 210 of the product 200. The mounting surface portion 27 is the back surface of the cushioning material 20 and forms the surface opposite the contact surface portion 21.

As shown in Figures 6 and 7, the cushioning material 20 has a cutout 23 on the back side, which is the side that will be attached to the product 200. The cutout 23 is indicated by a dashed line on the cushioning material 20 in Figure 3. The cutout 23 is a hollow portion of the cushioning material 20. By having the cutout 23, the cushioning material 20 can reduce its mass and material costs.

The cutout portion 23 is a portion formed so as to be recessed from the mounting surface portion 27 of the cushioning material 20 into the interior of the cushioning material 20. When the packaging material 100 is packed with the product 200, the cutout portion 23 is formed so as to be recessed from the mounting surface portion 27 toward the inside of the cushioning material 20, from the side where the product 200 is placed toward the side where the side cardboard 50 is placed. The cutout portion 23 is recessed inward from the mounting surface portion 27 toward the contact surface portion 21. The cutout portion 23 forms a space inside the cushioning material 20.

The cutouts 23 include a first cutout 23a and a second cutout 23b. More specifically, the cushioning material 20 includes a first cutout 23a formed in the center of the cushioning material 20 in the longitudinal direction, and a pair of second cutouts 23b spaced apart above and below the first cutout 23a.

The first cutout portion 23a reduces the mass of the cushioning material 20, thereby reducing the mass of the packaging material 100 and reducing the burden of transporting the packaged product 200. The first cutout portion 23a is also used when dividing the cushioning material 20, for example, when packaging a product other than the product 200, or when diverting the cushioning material 20 for another purpose. The provision of the first cutout portion 23a in the cushioning material 20 makes it easier to fold and separate the cushioning material 20.

The first cutout portion 23a is formed in a cross shape when viewed from behind at the mounting surface portion 27 of the product 200, as shown in Figure 7 as an example. When viewed from above at the mounting surface portion 27 of the product 200, the first cutout portion 23a has a first extension portion 23a1 extending in the longitudinal direction of the cushioning material 20 and a second extension portion 23a2 extending in the lateral direction of the cushioning material 20.

When the short side of the cushioning material 20 is horizontal, the cushioning material 20 can be divided at the second extension portion 23a2, which is provided by extending horizontally from the first cutout portion 23a provided in the center of the cushioning material 20 in the longitudinal direction, thereby adjusting the size of the cushioning material 20. Note that the first cutout portion 23a is not limited to being formed in a cross shape, and may be formed by only the first extension portion 23a1 or the second extension portion 23a2.

The cushioning material 20 has second cutouts 23b on both sides of the first cutout 23a in the longitudinal direction of the cushioning material 20. The second cutouts 23b reduce the mass of the cushioning material 20, thereby reducing the mass of the packaging material 100 and reducing the burden of transporting the packaged product 200.

Figure 9 is a perspective view of packaging material 100 according to embodiment 1, which includes modified cushioning material 20A. Figure 10 is a front view of modified cushioning material 20A shown in Figure 9. Figure 11 is a side view of modified cushioning material 20A shown in Figure 10. Figure 12 is a rear view of modified cushioning material 20A shown in Figure 9. Figure 13 is a conceptual diagram showing the relationship between product 200, modified cushioning material 20A, and side cardboard panels 50 in packaging material 100 shown in Figure 1. Note that Figure 9 is a perspective view of packaging material 100 according to embodiment 1, showing the configuration with the top cardboard panel 60 and side cardboard panels 50 removed. Also, in Figure 13, the cutouts 23 formed inside cushioning material 20A are indicated by dotted lines.

The cushioning material 20 shown in Figures 1 to 8 extends in the vertical direction (Z-axis direction) of the product 200 and is formed as a single block in the vertical direction (Z-axis direction) of the product 200. The cushioning material 20A of the modified example shown in Figures 9 to 13 extends in the vertical direction (Z-axis direction) of the product 200 and is formed as two blocks in the vertical direction (Z-axis direction) of the product 200. In other words, the cushioning material 20A of the modified example shown in Figures 9 to 13 is arranged separated into upper and lower parts in the vertical direction (Z-axis direction) of the product 200.

The multiple cushioning materials 20A are attached vertically and separated along the first direction D1 (see Figure 2) of the side portion 212, and the thickness of each of the multiple cushioning materials 20A corresponds to the distance of the gap between the housing 210 of the product 200 and the side cardboard 50.

The modified cushioning material 20A is attached to the left side surface 212b and right side surface 212d of the housing 210, similar to the cushioning material 20. The cushioning material 20A is arranged to correspond to the four side surface corners 214 of the rectangular left side surface 212b of the housing 210. Similarly, the cushioning material 20A is arranged to correspond to the four side surface corners 214 of the rectangular right side surface 212d of the housing 210.

The cushioning material 20A is arranged at the four side corners 214 of the left side surface 212b and the right side surface 212d, i.e., at each of the four corners of the left side surface 212b and the right side surface 212d. When a product 200 such as a refrigerator is packed, the cushioning material 20A is positioned inside the cylindrical cardboard side surface 50, and supports the cardboard side surface 50 from the inside when the product 200 is transported.

As an example, the shape of the cushioning material 20A is 430 mm in height, 50 mm in width, and 25 mm in thickness. Note that the height here refers to the length in the longitudinal direction of the cushioning material 20A, which is the up-and-down direction (Z-axis direction) of the product 200. The width here refers to the length in the lateral direction of the cushioning material 20A, which is the depth direction (Y-axis direction) of the product 200. The thickness here refers to the length in the direction perpendicular to the longitudinal and lateral directions of the cushioning material 20A, which is the length in the left-right direction (X-axis direction) of the product 200.

Of the cushioning materials 20, the cushioning materials 20 attached to the upper front parts of the left side surface 212b and right side surface 212d of the housing 210 are referred to as first upper side surface cushioning materials 20a1. Of the cushioning materials 20, the cushioning materials 20 attached to the lower front parts of the left side surface 212b and right side surface 212d of the housing 210 are referred to as first lower side surface cushioning materials 20a2.

Of the cushioning materials 20, the cushioning materials 20 attached to the upper rear sides of the left side surface 212b and right side surface 212d of the housing 210 are referred to as second upper side cushioning materials 20b1. Of the cushioning materials 20, the cushioning materials 20 attached to the lower rear sides of the left side surface 212b and right side surface 212d of the housing 210 are referred to as second lower side cushioning materials 20b2.

The first upper side cushioning material 20a1 and the first lower side cushioning material 20a2 attached to the left side surface portion 212b are arranged along the front edge portion 212b1 of the left side surface portion 212b. The first upper side cushioning material 20a1 and the first lower side cushioning material 20a2 are arranged in a position closer to the front edge portion 212b1 than the center of the left side surface portion 212b in the depth direction (Y-axis direction).

The second upper side cushioning material 20b1 and the second lower side cushioning material 20b2 attached to the left side surface portion 212b are arranged along the rear edge portion 212b2 of the left side surface portion 212b. The second upper side cushioning material 20b1 and the second lower side cushioning material 20b2 are arranged in a position closer to the rear edge portion 212b2 than the center of the left side surface portion 212b in the depth direction (Y-axis direction).

The first upper side cushioning material 20a1 and the first lower side cushioning material 20a2 attached to the right side surface portion 212d are arranged along the front edge portion 212d1 (see Figure 4) of the right side surface portion 212d. The first upper side cushioning material 20a1 and the first lower side cushioning material 20a2 are arranged in a position closer to the front edge portion 212d1 than to the center of the right side surface portion 212d in the depth direction (Y-axis direction).

The second upper side cushioning material 20b1 and the second lower side cushioning material 20b2 attached to the right side surface portion 212d are arranged along the rear edge portion 212d2 (see Figure 4) of the right side surface portion 212d. The second upper side cushioning material 20b1 and the second lower side cushioning material 20b2 are arranged in a position closer to the rear edge portion 212d2 than the center of the right side surface portion 212d in the depth direction (Y-axis direction).

Compared to the packaging material 100 having the cushioning material 20 shown in Figures 1 to 8, the packaging material 100 having the modified cushioning material 20A does not have the cushioning material 20A in the central part of the product 200 in the vertical direction (Z-axis direction) of the product 200 when the product 200 is packed.

In other words, in the packaging material 100 having the modified cushioning material 20A, the cushioning material 20A is not provided in the central portions of the left side surface 212b and right side surface 212d of the product 200 in the vertical direction (Z-axis direction) of the product 200. However, when the product 200 is packed in the packaging material 100, the contact surface portion 21 of the modified cushioning material 20A abuts against the side corrugated cardboard 50 at four side corners 214 of the left side corrugated cardboard 52 and right side corrugated cardboard 54 of the side corrugated cardboard 50. With this configuration, the cushioning material 20A suppresses deformation of the four corners 57 formed by the sides of the front side corrugated cardboard 51, left side corrugated cardboard 52, rear side corrugated cardboard 53, and right side corrugated cardboard 54 of the cylindrically shaped side corrugated cardboard 50.

Therefore, when packaging the side of the product 200 with cylindrical corrugated cardboard 50 surrounding it, deformation of the corrugated cardboard 50 is suppressed near the corners 57 of the corrugated cardboard 50, even if no cushioning material 20 is provided in the vertical center of the product's side. In other words, when the product 200 is clamped from the side and lifted for transport using a clamp-type forklift or the like, deformation of the corrugated cardboard 50 is suppressed near the corners 57 of the corrugated cardboard 50. Furthermore, even when a person transports the product 200 by grasping the side handles 55 (see Figure 1) of the corrugated cardboard 50, deformation of the corrugated cardboard 50 is suppressed near the corners 57 of the corrugated cardboard 50.

In addition, the side cardboard 50 and the cushioning material 20 abut at the four corners of each of the left side cardboard 52 and right side cardboard 54, so even if the center of the side cardboard 50 is pressed from the outside, contact between the product 200 and the side cardboard 50 is suppressed.

The modified cushioning material 20A also suppresses deformation of the side cardboard 50 and prevents contact between the product 200 and the side cardboard 50. Therefore, compared to packaging material 100 with cushioning material 20, packaging material 100 with cushioning material 20A can omit cushioning material 20 in the center of product 200 while protecting product 200 in the vertical direction (Z-axis direction). Even with a configuration in which cushioning material 20 is placed in four locations on one side of product 200, as with cushioning material 20A, the same effects as with long cushioning material 20 can be achieved, namely, suppressing deformation of the side cardboard 50 and preventing dents on product 200.

(Top cushioning material 30)
Top cushioning material 30 protects the top of refrigerator, which is product 200, which is the object to be packaged. Top cushioning material 30 is installed along a portion that forms one side of the top surface of housing 210. Top cushioning material 30 is attached to product 200 so as to cover the top of refrigerator, which is product 200, which is the object to be packaged, from above. When attached to product 200, top cushioning material 30 covers at least a portion of top surface 213 of product 200. Top cushioning material 30 is placed on top of product 200, which is the object to be packaged.

The top surface cushioning material 30 is formed to extend in the depth direction (Y-axis direction) of the product 200. The top surface cushioning material 30 is also formed to extend in the left-right direction (X-axis direction) of the product 200. The top surface cushioning material 30 is formed to be longer in the depth direction (Y-axis direction) of the product 200 than in the left-right direction (X-axis direction) of the product 200. The top surface cushioning material 30 is formed to have a thickness in the up-down direction (Z-axis direction) of the product 200.

The packaging material 100 has a pair of top cushioning materials 30 arranged along opposing sides of the top surface 213 of the product 200 in the left-right direction (X-axis direction) of the product 200. The top cushioning materials 30 are attached to portions that form opposing sides of the top surface of the housing 210 when the housing 210 is viewed in the first direction D1 (see Figure 2).

2, of the top cushioning materials 30, the top cushioning material 30 attached to the upper right of the product 200 is referred to as right top cushioning material 30a, and the top cushioning material 30 attached to the upper left of the product 200 is referred to as left top cushioning material 30b. Top cushioning material 30 is a general term for right top cushioning material 30a and left top cushioning material 30b. Note that in the packaging material 100 of embodiment 1, the right top cushioning material 30a and the left top cushioning material 30b are formed as separate bodies, but the right top cushioning material 30a and the left top cushioning material 30b may also be formed as a single body.

The right top cushioning material 30a and the left top cushioning material 30b are a pair of top cushioning materials 30 placed on top of the product 200. The right top cushioning material 30a and the left top cushioning material 30b are arranged with a gap between them in the left-right direction (X-axis direction) of the product 200. The right top cushioning material 30a and the left top cushioning material 30b are molded from a synthetic resin material such as polystyrene foam.

The right top cushioning material 30a and the left top cushioning material 30b are placed over both shoulders of the top surface 213 of the product 200 in the left-right direction (X-axis direction) of the product 200. The right top cushioning material 30a and the left top cushioning material 30b each have a recess (not shown) on the underside that conforms to the shape of the top surface 213 of the product 200 so that the top surface 213 of the product 200 fits into them. The right top cushioning material 30a and the left top cushioning material 30b are thick, mainly around the parts that come into contact with the edges and corners of the top surface 213 of the product 200.

As shown in Figure 2, the right top cushioning material 30a and the left top cushioning material 30b may have a cutout formed in the portion facing the center of the top surface 213. By forming a cutout in the right top cushioning material 30a and the left top cushioning material 30b, the amount of material constituting the right top cushioning material 30a and the left top cushioning material 30b can be reduced.

(Floor cardboard 40)
Floor cardboard 40 protects the lower part of the refrigerator, which is the packaged product 200. Floor cardboard 40 is installed to cover the underside of housing 210. Floor cardboard 40 is attached to product 200 so as to cover the lower part of the refrigerator, which is the packaged product 200, from below. When attached to product 200, floor cardboard 40 covers bottom part 211 of product 200.

A floor cushioning material 10 is placed between the product 200 and the floor cardboard 40. The floor cardboard 40 is attached to the product 200 so as to cover the bottom of the refrigerator, which is the product 200 to be packaged, from below via the floor cushioning material 10. The product 200 to be packaged is placed on the floor cardboard 40 via the floor cushioning material 10. The product 200 is placed on the floor cushioning material 10 that is provided on the floor cardboard 40.

The cardboard floor 40 is a tray-shaped cardboard material formed to cover the bottom and side surfaces of the right and left floor cushioning materials 10a and 10b. The cardboard floor 40 is box-shaped with an open top, and houses a pair of floor cushioning materials 10. In the packaging material 100, the cardboard floor 40 covers the outside of the right and left floor cushioning materials 10a and 10b with respect to the product 200. The cardboard floor 40 is kept covering the right and left floor cushioning materials 10a and 10b with the product 200 placed on them by a band 70 that is hung on the outside of the cardboard floor 40 with respect to the product 200.

The cardboard floor 40 has a flat bottom plate 41 on which the right and left floor cushioning materials 10a and 10b are placed. The cardboard floor 40 also has cardboard side plates 42 that are arranged along the edges 41a that form the four sides of the bottom plate 41 and extend upward from the bottom plate 41, forming side walls at the edges 41a. The cardboard floor 40 has a pair of cardboard side plates 42 that face each other in the depth direction (Y-axis direction) of the cardboard floor 40. The cardboard floor 40 also has a pair of cardboard side plates 42 that face each other in the left-right direction (X-axis direction) of the cardboard floor 40.

The bottom plate portion 41 is a plate-like member and is formed into a rectangular shape in a plan view. The bottom plate portion 41 has multiple L-shaped handles 44 and cardboard bottom handles 45 that are used by drilling holes during transportation so that the packaging material 100 can be grasped from either the left or right side or the front or back side of the product 200. The L-shaped handles 44 and cardboard bottom handles 45 are formed as handles for the packaging material 100 by drilling holes in the bottom plate portion 41. The L-shaped handles 44 and cardboard bottom handles 45 are, for example, portions of the bottom plate portion 41 with multiple through-holes formed at regular intervals, and can be easily drilled on-site by, for example, pressing or cutting.

When the floor cushioning material 10 is stored in the cardboard floor board 40, the L-shaped handle 44 and the cardboard floor handle 45 are formed in a position that overlaps with the space formed by the cutout 13 of the floor cushioning material 10 in the direction in which the board surface of the bottom plate 41 faces. In other words, when the floor cushioning material 10 is stored in the cardboard floor board 40, the L-shaped handle 44 and the cardboard floor handle 45 are not formed in a position that overlaps with the floor-side main body 11 and protrusion 12 of the floor cushioning material 10 in the direction in which the board surface of the bottom plate 41 faces.

When carrying out work such as transporting product 200, a worker can insert their hands into the L-shaped handle 44 and floor cardboard handle 45 and grasp the floor-side main body 11 and protrusion 12 of the floor cushioning material 10 as handles. Alternatively, when carrying out work such as transporting product 200, a worker can insert their hands into the L-shaped handle 44 and floor cardboard handle 45 and grasp the floor cardboard 40 as a handle.

The cardboard floor side portions 42 are formed to extend along the edge 41a of the bottom plate portion 41 and also extend upward (in the Z1 direction) from the bottom plate portion 41. The cardboard floor side portions 42 are plate-shaped members formed in a rectangular shape. The cardboard floor 40 is formed into a container-like shape with the bottom plate portion 41 as the bottom by bending the bottom plate portion 41 and the four cardboard floor side portions 42 to connect the cardboard floor side portions 42 and form the side walls of the cardboard floor 40.

(Side cardboard 50)
Side cardboard panel 50 protects side surface 212 of refrigerator 200, which is product 200 to be packaged. Side cardboard panel 50 is attached to product 200 so as to cover side surface 212 of refrigerator 200, which is product 200 to be packaged. Side cardboard panel 50 is formed in a cylindrical shape that surrounds housing 210. Side cardboard panel 50 is formed in a hollow quadrangular prism shape and has four corners 57.

The side cardboard 50 is fixed to the side portion 212 of the housing 210 via multiple cushioning materials 20 by wrapping bands 70 around the outer surface 60a of the top cardboard 60, the outer surface 50a of the side cardboard 50, and the outer surface 40a of the floor cardboard 40.

As shown in Figure 4, the side corrugated board 50 includes a front side corrugated board 51, a left side corrugated board 52, a rear side corrugated board 53, and a right side corrugated board 54. The front side corrugated board 51, the left side corrugated board 52, the rear side corrugated board 53, and the right side corrugated board 54 are each formed in a plate shape. The thickness of the side corrugated board 50 is 5 mm, for example, but is not limited to 5 mm and may be thinner or thicker than 5 mm.

When packaging the product 200 as the packaged item, the worker places the cylindrical cardboard side panel 50 over the product 200, covering the side portion 212 of the product 200. The cardboard side panel 50 is placed over the product 200 and attached to the product 200 so as to surround the side portion 212 of the product 200 and the cushioning material 20.

The side cardboard 50 may be provided with multiple side cardboard handles 55 that can be punched and used when transporting the product 200. When transporting the product 200, a worker can reach into the side cardboard handle 55 and grasp the side cardboard 50 as a handle.

(Top cardboard 60)
Top cardboard 60 protects the top of the refrigerator, which is the packaged product 200. Top cardboard 60 covers the top surface of housing 210 and is placed on top of top cushioning material 30. Top cardboard 60 is attached to product 200 so as to cover the top of the refrigerator, which is the packaged product 200, from above.

When attached to the product 200, the top cardboard 60 covers the top surface 213 of the product 200. The top cushioning material 30 is placed between the product 200 and the top cardboard 60. In other words, the top cardboard 60 is attached to the product 200 so as to cover the top of the refrigerator, which is the product 200 to be packaged, from above via the top cushioning material 30. The top cardboard 60 is placed on top of the product 200 via the top cushioning material 30.

The top cardboard 60 is a plate-like member formed into a flat plate. In the packaging material 100, the top cardboard 60 is placed on the outside of the right top cushioning material 30a and left top cushioning material 30b of the product 200. The top cardboard 60 is kept covering the right top cushioning material 30a and left top cushioning material 30b placed on the product 200 by a band 70 attached to the outside of the top cardboard 60.

The top cardboard 60 and the side cardboard 50 may be formed as a single unit or as separate pieces. When the top cardboard 60 and the side cardboard 50 are formed as a single unit, they are formed in a columnar shape. When the top cardboard 60 and the side cardboard 50 are formed as a single unit, they are formed in a box shape with a hollow interior and an opening on the bottom of each of the six sides.

(Band 70)
The packaging material 100 has a plurality of bands 70 wrapped around the outer surface 60a of the top cardboard 60, the outer surface 50a of the side cardboard 50, and the outer surface 40a of the floor cardboard 40. The bands 70 are used to maintain the floor cushioning material 10, the cushioning material 20, and the top cushioning material 30 attached to the product 200, covered with the floor cardboard 40, the side cardboard 50, and the top cardboard 60. In the packaging material 100, the floor cushioning material 10, the cushioning material 20, the top cushioning material 30, the floor cardboard 40, the side cardboard 50, and the top cardboard 60 are restrained by the bands 70. The top cardboard 60, the side cardboard 50, and the floor cardboard 40 are secured by wrapping the plurality of bands 70 vertically around the sides of the product 200. The bands 70 are, for example, PP bands (polypropylene bands). The width of the band 70 is, for example, 19 mm.

The bands 70 are placed around the outside of the top cardboard 60, side cardboard 50, and floor cardboard 40 of the product 200. The worker wraps the bands 70 around the product 200 in the vertical direction, tightening them to secure the top cardboard 60, side cardboard 50, and floor cardboard 40 together.

When the product 200 is packed in the packaging material 100, the band 70 may or may not overlap the cushioning material 20 via the side cardboard 50. In other words, when the product 200 is packed in the packaging material 100, the side cardboard 50 may or may not be sandwiched between the band 70 and the cushioning material 20.

As described above, the packaging method using the packaging material 100 uses a plurality of cushioning materials 20 that are detachably attached to the side surface portion 212 that forms the side surface of the housing 210 of the product 200 that includes the housing 210, and are covered by the cylindrical side surface cardboard 50 that surrounds the housing 210. The plurality of cushioning materials 20 include a pair of cushioning materials 20 that are attached to both ends of the side surface portion 212 when viewed in a first direction D1 that is the axial direction of the side surface cardboard 50 and along the surface of the side surface portion 212, and are formed to extend in the first direction D1. The pair of cushioning materials 20 have contact surface portions 21 that contact the inner surface 50b of the cylindrical side surface cardboard 50 that surrounds the housing 210, and are positioned between the side surface cardboard 50 and the housing 210, with the contact surface portions 21 supporting the side surface cardboard 50 from the side where the housing 210 is located.

With a pair of cushioning materials 20 attached to the side portions 212, the worker covers the product 200 with the cylindrical side cardboard 50 from the top surface 213 side of the housing 210.

[Effects of the packaging material 100]
14 is a perspective view of a packaging material 100L according to a comparative example, in which a product 200 is packed. The packaging material 100L according to the comparative example is a packaging material disclosed in, for example, a prior art document, and is a conventionally used packaging material.

The packaging material 100L according to the comparative example has a floor cardboard 40L, side cardboard 50L, top cardboard 60L, and a band 70L. The top cardboard 60L of the packaging material 100L covers the top and upper part of the product 200. The side cardboard 50L of the packaging material 100L is arranged to cover the side of the product 200 when the side of the product 200 is viewed from the front. The floor cardboard 40L of the packaging material 100L covers the bottom and lower part of the product 200 from below.

The floor cardboard 40L, side cardboard 50L, and top cardboard 60L are fixed to the product 200 by bands 70L. In the packaging material 100L of the comparative example, cushioning material 20L is provided near the center of the side cardboard 50L in the depth direction (Y-axis direction) of the product 200. In the packaging material 100L of the comparative example, cushioning material 20L is provided near the center of the side cardboard 50L in the depth direction (Y-axis direction) of the product 200, protecting the product 200 from forces applied to the side cardboard 50L.

The packaging material 100L according to the comparative example does not have floor or top cushioning material, but it may have floor and top cushioning material. In this case, the floor cushioning material of the packaging material 100L is placed between the floor cardboard 40L and the product 200, covering the underside and lower part of the product 200 from below. The top cushioning material of the packaging material 100L is placed between the top cardboard 60L and the product 200, covering the top and upper part of the product 200.

Figure 15 is a conceptual diagram showing an example of a clamp-type forklift 300 transporting a product 200 packaged in packaging material 100 according to embodiment 1. The clamp-type forklift 300 has a pair of attachments 310 for clamping a refrigerator, which is the product 200, and moving it up, down, left, and right.

The clamp-type forklift 300 has two attachments 310, one on each side, at the front of the clamp-type forklift 300. The pair of attachments 310 are arranged side by side on the left and right when the clamp-type forklift 300 is viewed from the front. The pair of attachments 310 open and close left and right when the operator operates the clamp-type forklift 300, and clamp and hold the sides of the product 200.

The attachment 310 of the clamp-type forklift 300 has a metal plate 315 that constitutes a bale clamp, which serves as an arm that clamps and lifts the packaging material 100 containing the product 200. This metal plate 315 is provided with rubber such as attachment rubber 320a and attachment rubber 320b on the surface that comes into contact with the packaging material 100 to prevent the packaging material 100 from slipping and to reduce the impact when the metal plate 315 comes into contact with the packaging material 100. Attachment rubber 320a and attachment rubber 320b are collectively referred to as attachment rubber 320.

The pair of attachments 310 each have two attachment rubbers 320a and 320b spaced apart vertically on their opposing inner surfaces. When the forward and reverse directions of the clamp-type forklift 300 are defined as the depth direction of the clamp-type forklift 300, the attachment rubbers 320a and 320b are arranged to extend in the depth direction.

When the direction parallel to the ground is defined as the horizontal direction, attachment rubber 320a and attachment rubber 320b are arranged to extend horizontally, for example. The vertical and depth widths of attachment rubber 320a and attachment rubber 320b are formed to be widths that can hold product 200 in relation to the product 200 being transported.

Figure 16 is a conceptual diagram showing an example of transporting packaging material 100 containing products 200 using the clamp-type forklift 300 shown in Figure 15. The clamp-type forklift 300 clamps and lifts one or more products 200 between a pair of attachments 310 for transport. The clamp-type forklift 300 clamps and lifts the products 200 from the side between the attachments 310 while aligning the upper and lower positions of the cushioning material 20 with the attachment rubbers 320a and 320b of the attachments 310 for transport.

Figure 17 is a front view of the inner surface of attachment 310. The inner surface of attachment 310 is the surface that comes into contact with the side cardboard 50 of packaging material 100. As shown in Figure 17, attachment 310 has attachment rubber 320a and attachment rubber 320b on its inner surface, which are spaced apart vertically and extend horizontally to correspond to the position of cushioning material 20.

Figure 18 is a front view of the inner surface of the attachment 310L according to the comparative example. The attachment 310L according to the comparative example is an attachment used when transporting a product 200 packaged in the packaging material 100L according to the comparative example. The attachment 310L has an attachment rubber 340 that extends vertically to correspond to the position of the cushioning material 20L.

Figure 19 is a top view of the attachment 310 and packaging material 100R when using packaging material 100R that does not have cushioning material 20 on the sides of the product 200. Figure 19 schematically shows the deformation that occurs in the side cardboard 50R of packaging material 100R when packaging material 100R is clamped and lifted by the attachment 310 of a clamp-type forklift 300. The white arrow F1 in Figure 19 indicates the direction of movement of the attachment 310 when clamping packaging material 100R.

Packaging material 100R is secured by wrapping bands 70 around the top and bottom surfaces of the cardboard top panel 60, side panel 50, and floor panel 40 (see Figure 1) in a vertical direction. Packaging material 100R has no cushioning material 20 between the cardboard side panel 50 and the product 200, so there is nothing to support the cardboard side panel 50 against the side of the product 200. Therefore, when viewing packaging material 100R in the vertical direction (Z-axis direction), the cardboard side panel 50 bends inward as it moves away from corners 57R at both ends of the side of the cardboard side panel 50, causing it to dent and deform toward the product 200, as shown in center portion 510.

When the packaging material 100R, which has been bent in this way, is pinched from the left and right with the attachment 310 and lifted, a concentrated force is applied to the corner 57R in the direction of the white arrow F1. Because the force is concentrated at the corner 57R of the packaging material 100, the corner 57R of the side cardboard 50 is prone to wrinkles and dents.

Figure 20 is a top view of the attachment 310 and the packaging material 100 when the packaging material 100 of embodiment 1 is used. Figure 20 schematically shows the deformation that occurs in the packaging material 100 when the packaging material 100 of embodiment 1 is used and the packaging material 100 is clamped and lifted by the attachment 310 of the clamp-type forklift 300.

As shown in Figure 20, the side cardboard 50 is fixed to the product 200 with the central portion 510 wrapped around the band 70 bending inward and deforming by concaving closer to the product 200. When the side cardboard 50 is fixed to the side portion 212, the contact surface portion 21 of the cushioning material 20 comes into contact with the inner surface 50b, and the side cardboard 50 is supported from the inside by the cushioning material 20. The central portion 510 and the side portion 212 are not in contact with each other and are separated. The position of the side cardboard 50 in the X-axis and Y-axis directions relative to the product 200 is fixed by the band 70.

The packaging material 100 is fastened by wrapping the band 70 around the top and bottom surfaces of the cardboard top panel 60, the cardboard side panels 50, and the cardboard floor panel 40 (see Figure 1) in a vertical direction. The packaging material 100 of the first embodiment includes cushioning material 20 between the cardboard side panels 50 and the product 200. Therefore, even when the cardboard side panels 50 are fastened by the band 70, deflection is suppressed in the areas above and below where the cushioning material 20 is provided. Therefore, the angle of the corners 57 is maintained closer to a right angle than in the configuration of the packaging material 100R shown in Figure 19.

Since the angles of the corners 57 of the packaging material 100 are maintained at nearly right angles, even when the side cardboard box 50 is clamped by a clamp-type forklift 300, the force in the direction of the white arrow F1 is distributed and applied to the side cardboard box 50 around the corners 57. Since the force in the direction of the white arrow F1 is distributed and applied to the side cardboard box 50 around the corners 57 of the packaging material 100, the occurrence of wrinkles and dents in the corners 57 of the side cardboard box 50 is reduced compared to packaging material 100R.

The multiple cushioning materials 20 and 20A, as well as the packaging material 100, include a pair of cushioning materials 20 or 20A attached to both ends of the side portion 212 and formed to extend in the first direction D1 (see FIG. 2), when viewed in the axial direction of the side cardboard 50 and along the surface of the side portion 212. The pair of cushioning materials 20 or 20A are detachably attached to both ends of the side portion 212 and are positioned between the side cardboard 50 and the housing 210 to separate the side portion 212 and the side cardboard 50, and the contact surface portion 21 supports the side cardboard 50 from the inside.

Therefore, even when the side cardboard panels 50 are wrapped around and secured to the product 200 by multiple bands 70, the packaging material 100 prevents the force of the attachment 310 of the clamp-type forklift 300 transporting the product 200 from being concentrated on the corners of the product 200. The cushioning material 20 and packaging material 100, with their above-described configuration, prevent the force of the attachment 310 from being concentrated on the corners of the product 200 when transporting the product 200, thereby preventing wrinkles from forming in the side cardboard panels 50 and preventing tears from forming in the side cardboard panels 50. Furthermore, because the product 200 is covered by the side cardboard panels 50, scratches and dents on the product 200 are reduced.

Figure 21 is a top view of the attachment 310 and packaging material 100L when using the packaging material 100L of the comparative example. Figure 21 schematically shows the deformation that occurs in the packaging material 100L when the packaging material 100L of the comparative example is clamped and lifted by the attachment 310 of the clamp-type forklift 300. In Figure 21, three portions of the packaging material 100L are fastened with bands 70. The attachment 310 used in this case has the configuration of the attachment 310 having attachment rubber 320a and attachment rubber 320b shown in Figure 17.

In the comparative example, the packaging material 100L is fastened by wrapping the band 70 around the top surface 60L, the side surface 50L, and the floor surface 40L (see Figure 14) in a vertical direction to secure the cardboard boxes. Even when the band 70 is wrapped around the top surface 60L, the side surface 50L, and the floor surface 40L in a vertical direction to secure the cardboard boxes, the central portion 520 containing the cushioning material 20L is prevented from sagging.

In the packaging material 100L according to the comparative example, the band 70 causes deflection in the intermediate portion 530, located between the center portion 520 and the corner 57L formed on the side cardboard panel 50L. When the packaging material 100L is lifted by clamping it from the left and right with the attachment 310 in this state, the attachment rubbers 320a and 320b (see Figure 17) apply concentrated force to the corner 57L in the direction of the outline arrow F1. Because concentrated force is applied to the corner 57L of the packaging material 100L, the corner 57L of the side cardboard panel 50L is prone to wrinkles and dents.

Figure 22 is a top view of the attachment 310L and packaging material 100L when using the packaging material 100L of the comparative example. Figure 22 schematically shows the deformation that occurs in the packaging material 100L when the packaging material 100L of the comparative example is clamped and lifted by the attachment 310L of the clamp-type forklift 300 when using the packaging material 100L of the comparative example. Note that Figure 22 only shows the portion of the attachment 310L that has the attachment rubber 340, and omits the depiction of other portions of the attachment 310L.

To conserve rubber, the attachment 310L is provided with attachment rubber 340 only in the portion facing the cushioning material 20L. The attachment rubber 340 is provided to extend in the vertical direction so as to face the cushioning material 20L. The attachment 310L used in this case has the configuration of the attachment 310L with attachment rubber 340 shown in Figure 18.

The packaging material 100L according to the comparative example is lifted by being sandwiched between a pair of attachments 310L on both sides with bands 70 fastened to the top cardboard 60, side cardboard 50, and floor cardboard 40. At this time, the center portion 520 of the packaging material 100L, which contains the cushioning material 20L, is supported from the inside by the side cardboard 50L, so even when the side cardboard 50L is pressed by the attachment rubber 340, the occurrence of wrinkles is suppressed.

In addition, the corners 57L of the side cardboard 50L do not come into contact with the attachment rubber 340, thereby suppressing the occurrence of wrinkles. However, the attachment rubber 340 is only located in the center of the attachment 310L in the depth direction of the clamp-type forklift 300. Therefore, the transporter operating the clamp-type forklift 300 must operate the clamp-type forklift 300 so that the attachment rubber 340 overlaps the area where the cushioning material 20L of the packaging material 100L is installed.

Furthermore, because the shape of the attachment rubber 340 extends in the vertical direction, the attachment rubber 340 does not face the cushioning material 20L of each of the multiple packaging materials 100L, so the clamp-type forklift 300 may not be able to transport multiple packaging materials 100L at once.

Here, we consider a case where multiple attachment rubbers 340 extending vertically from the metal plate 315 (see Figure 18) are attached to the depth direction of the clamp-type forklift 300 to accommodate the transport of multiple packaging materials 100L. For example, consider a case where two attachment rubbers 340 are attached horizontally, with two attachment rubbers 340 for each product 200 to be packaged attached to the attachment 310L. In such a case, when transporting the packaging materials 100L containing the products 200, the transporter operating the clamp-type forklift 300 must clamp the packaging materials 100L so that each of the attachment rubbers 340 overlaps the portion of each packaging material 100L where the cushioning material 20L is located. This makes it more difficult for the transporter operating the clamp-type forklift 300 to operate the forklift compared to when the attachment 310 is used.

Compared to the packaging material 100L according to the comparative example, the packaging material 100 having the modified cushioning material 20A (see FIG. 9) does not have cushioning material 20 provided in the vertical (Z-axis) central portion of the left side surface 212b and right side surface 212d of the product 200. Therefore, the attachment 310 used to transport the packaging material 100 having cushioning material 20A can omit the attachment rubber in the vertical central portion compared to an attachment that has attachment rubber provided on the entire inner surface that contacts the packaging material 100. In other words, the attachment 310 used to transport the packaging material 100 having cushioning material 20A can reduce the area of the rubber provided on the attachment 310 and the amount of rubber used compared to an attachment that has attachment rubber provided on the entire surface that contacts the packaging material 100.

Furthermore, the packaging material 100 (see Figure 9) having the modified cushioning material 20A has cushioning material 20A provided in two locations, top and bottom, at both ends in the depth direction (Y-axis direction) of the left side surface 212b and right side surface 212d of the product 200. The transporter operating the clamp-type forklift 300 clamps the packaging material 100 with the attachment 310 by aligning the heightwise positions of the attachment rubbers 320a and 320b provided on the attachment 310 with the cushioning material 20.

When the transporter operates the clamp-type forklift 300 in this manner, even if the attachment 310 clamps and lifts the packaging material 100 from both sides, the attachment rubber 320a and attachment rubber 320b come into contact with the side cardboard 50 supported by the cushioning material 20. This prevents the corners 57 of the packaging material 100 from wrinkling and also prevents the corners 57 from becoming dented.

Furthermore, the packaging material 100 is attached to the side surface 212 of the product 200 with two cushioning materials 20 spaced apart in the depth direction (Y-axis direction) and aligned at the same height. Alternatively, the packaging material 100 is attached to the side surface 212 of the product 200 with two cushioning materials 20A spaced apart in the depth direction (Y-axis direction) and aligned at the same height. The attachment 310 is arranged so that the attachment rubber 320a and the attachment rubber 320b are spaced apart vertically and extend horizontally.

When transporting a product 200, the transporter simply clamps the product 200, which is packaged in packaging material 100, with attachment 310 so that the heights of attachment rubber 320a and attachment rubber 320b and the cushioning material 20 are aligned. Therefore, even if the area of rubber provided on attachment 310 is reduced compared to an attachment in which attachment rubber is provided on the entire surface that contacts packaging material 100, the transporter can clamp multiple products 200 with attachment 310 and transport them at once. When using packaging material 100, the transporter does not have difficulty operating the clamp-type forklift 300 compared to when clamping the product 200 so that each attachment rubber 340 overlaps the portion of each packaging material 100L where cushioning material 20L is located, as shown in Figure 22 .

In addition, the cushioning material 20 and the cushioning material 20A are formed with a predetermined specific thickness. Because the cushioning material 20 and the cushioning material 20A have a thickness, when the product 200 is packaged in the packaging material 100, a gap is formed between the side cardboard 50 and the side portion 212 of the product 200 by the cushioning material 20 or the cushioning material 20A. The thickness of each of the multiple cushioning materials 20 or the cushioning material 20A corresponds to the distance of the gap between the housing 210 of the product 200 and the side cardboard 50.

When the product 200 is viewed from above and below (in the Z-axis direction), even if the center of one side of the side cardboard box 50 is pressed, the cylindrical shape of the side cardboard box 50 means that the back surface of the side cardboard box 50, which faces the product, does not reach the side surface 212 of the product 200. Therefore, packaging material 100 including cushioning material 20 or cushioning material 20A prevents contact between the side cardboard box 50 and the side surface 212 of the product 200.

Furthermore, the multiple cushioning materials 20A are attached separated in the vertical direction along the first direction D1 of the side surface portion 212. Therefore, a packaging material 100 having multiple cushioning materials 20A can reduce the mass of the cushioning materials 20A in the vertical center portion compared to a packaging material 100 having cushioning materials 20 that are not separated in the vertical direction along the first direction D1. Therefore, a packaging material 100 having multiple cushioning materials 20A can reduce material costs compared to a packaging material 100 having cushioning materials 20 that are not separated in the vertical direction along the first direction D1.

In addition, cushioning material 20 and cushioning material 20A have inclined portions 22 that form inclined surfaces 28 at the leading ends in first direction D1, which is the longitudinal direction. When packaging product 200, i.e., a refrigerator, a worker places side cardboard box 50 over product 200 so as to insert product 200 inside cylindrical side cardboard box 50. Because cushioning material 20 and cushioning material 20A have inclined portions 22, when a worker places side cardboard box 50 over product 200, inclined surfaces 28 of inclined portions 22 make side cardboard box 50 easier to slide on inclined surfaces 28, making it easier to place side cardboard box 50 over product 200. Therefore, cushioning material 20 and cushioning material 20A, as well as packaging material 100, improve the worker's workability.

In addition, cushioning material 20 and cushioning material 20A have a lightening portion 23 formed in a recessed state from mounting surface 27, which forms the back surface of contact surface 21, into the interior of cushioning material 20, etc. By having lightening portion 23, cushioning material 20 and cushioning material 20A can reduce the mass of cushioning material 20A and the cost of cushioning material 20A. Furthermore, when cushioning material 20 and cushioning material 20A is subjected to external force, the lightening portion 23 allows cushioning material 20 and cushioning material 20A to deform inside cushioning material 20 and absorb the external force, thereby alleviating pressure on product 200.

The packaging material 100 also includes a top cushioning material 30, a top cardboard sheet 60, side cardboard sheets 50, a floor cardboard sheet 40, a floor cushioning material 10, and a cushioning material 20. Because the packaging material 100 covers the product 200 with these components, scratches on the product 200 are reduced, and dents on the product 200 are also reduced.

The side cardboard panels 50 are fixed to the side portion 212 via multiple cushioning materials 20 or 20A by wrapping bands 70 around the outer surface 60a of the top cardboard panel 60, the outer surface 50a of the side cardboard panel 50, and the outer surface 40a of the floor cardboard panel 40. A pair of cushioning materials 20 or 20A are detachably attached to both ends of the side portion 212 and are positioned between the side cardboard panel 50 and the housing 210 to separate the side portion 212 and the side cardboard panel 50, and the contact surface portion 21 supports the side cardboard panel 50 from the inside.

Therefore, even when the side cardboard panels 50 are wrapped around and secured to the product 200 by multiple bands 70, the packaging material 100 prevents the force of the attachment 310 of the clamp-type forklift 300 transporting the product 200 from being concentrated on the corners of the product 200. The cushioning material 20 and packaging material 100, with their above-described configuration, prevent the force of the attachment 310 from being concentrated on the corners of the product 200 when transporting the product 200, thereby preventing wrinkles from forming in the side cardboard panels 50 and preventing tears from forming in the side cardboard panels 50. Furthermore, because the product 200 is covered by the side cardboard panels 50, scratches and dents on the product 200 are reduced.

The product 200 is a refrigerator. Therefore, the cushioning material 20 and the packaging material 100 are configured as described above to prevent the force of the attachment 310 from being concentrated on the corners of the refrigerator when it is being transported, thereby preventing wrinkles from forming in the side cardboard 50 and preventing tears from forming in the side cardboard 50. The refrigerator is covered by the side cardboard 50, preventing scratches from occurring on the product 200 and preventing dents from occurring on the product 200.

Embodiment 2.
Fig. 23 is a top view of the top cushioning material 30 and the side cardboard 50 of the packaging material 100 according to the second embodiment. Fig. 24 is a top view showing the top cushioning material 30 shown in Fig. 23 alone. In Fig. 23, the position of the cushioning material 20 located below the top cushioning material 30 is indicated by a dashed line. Parts having the same configuration as those in the packaging material 100 of Figs. 1 to 22 are given the same reference numerals, and their description will be omitted. In Fig. 23, the right side of the paper surface corresponds to the front side of the product 200.

The packaging material 100 of embodiment 2 differs from the top cushioning material 30 of embodiment 1 in the structure of the top cushioning material 30 used in the packaging material 100. The configuration of the packaging material 100 of embodiment 2 other than the top cushioning material 30 is the same as the configuration of the packaging material 100 of embodiment 1.

In the packaging material 100 of embodiment 2, a pair of top cushioning materials 30 are installed along opposing sides of the top surface 213 of the product 200 so as to cover a portion of the top surface 213 and the side surface 212.

The top surface cushioning material 30 includes a top surface main body portion 31 that extends along a portion that forms one side of the top surface of the housing 210, and a protruding portion 32 that protrudes from the top surface main body portion 31 in the direction in which the surface of the side surface portion 212 of the housing 210 faces, toward the outside of the product 200. In other words, when viewed in the up-down direction (X-axis direction) of the product 200, the top surface cushioning material 30 includes the top surface main body portion 31 that extends in the depth direction (Y-axis direction) of the product 200, and the protruding portion 32 that protrudes from the top surface main body portion 31 in the left-right direction (Y-axis direction) of the product 200.

The top cushioning material 30 has a protruding portion 32 that protrudes outward from the portion that constitutes the outer surface of the top main body portion 31 along that edge of the product 200. The outer surface of the top main body portion 31 is the side that is located opposite the center of the product 200 when viewed in the vertical direction (X-axis direction) of the product 200, and "outward" refers to the direction from the center of the product 200 toward the outside.

When viewed in the vertical direction (Z-axis direction) of product 200, protrusion 32 is formed so as to be located on the outside of product 200 relative to top surface side main body 31 in the left-right direction (X-axis direction) of product 200. When viewed in the vertical direction (Z-axis direction) of product 200, protrusion 32 is formed so as to bulge outward from top surface side main body 31 to the outside of product 200 in the left-right direction (X-axis direction) of product 200.

The worker places the cylindrical cardboard side panel 50 over the top surface 213 of the product 200, surrounds the product 200 with the cardboard side panel 50, and places the top cushioning material 30 on the top surface 213 of the product 200 so that it is inserted into the gap between the cardboard side panel 50 and the side surface 212 of the product 200. In this case, the top cardboard panel 60 and the cardboard side panel 50 of the packaging material 100 are separate pieces.

When the top cardboard 60 and the side cardboard 50 are one piece, the worker first installs the top cushioning material 30 on the top portion 213 of the product 200, then places the cylindrical side cardboard 50 over the top portion 213 of the product 200, and surrounds the side portion 212 of the product 200 with the side cardboard 50.

[Effects of the packaging material 100]
The top surface cushioning material 30 includes a top surface side main body portion 31 that extends along a portion that forms one side of the top surface of the housing 210, and a protruding portion 32 that protrudes from the top surface side main body portion 31 in a direction that faces the surface of the side surface portion 212 of the housing 210 and toward the outside of the product 200. Because the top surface cushioning material 30 has the protruding portion 32, the side surface cardboard 50 that abuts against the protruding portion 32 is supported by the protruding portion 32 from the product 200 side, and bulges outward by the protruding portion 32 in the direction opposite to the side on which the product 200 is placed.

In the packaging material 100 according to embodiment 2, when a transporter clamps the side cardboard box 50 with the attachment 310 of the clamp-type forklift 300, the bulge 56, which is the portion of the side cardboard box 50 that bulges out due to the protrusion 32, comes into contact with the metal plate 315 of the attachment 310. More specifically, when the attachment 310 clamps the side cardboard box 50, the bulge 56, which is the portion of the side cardboard box 50 that bulges out due to the protrusion 32, comes into contact with the attachment rubber 320a of the attachment 310.

Even when the attachment 310 applies force to the left and right sides of the product 200, pushing the side cardboard box 50 in, the protruding portion 32 prevents the corners 57 of the side cardboard box 50 from coming into contact with the attachment 310. Therefore, in addition to the effects of the packaging material 100 of embodiment 1, which is provided with the cushioning material 20, the packaging material 100 of embodiment 2 can further prevent wrinkles from forming at the corners 57 of the side cardboard box 50, and can also prevent tears from occurring.

Embodiment 3.
Figure 25 is a top view of the cushioning material 20 and the side cardboard panel 50 of the packaging material 100 according to the third embodiment. Figure 26 is an enlarged view of a corner 57 of the side cardboard panel 50 and its surrounding area of the packaging material 100 according to the third embodiment. Note that Figure 26 is an enlarged view of region A of the packaging material 100 and product 200 shown in Figure 25. Parts having the same configuration as those in the packaging material 100 of Figures 1 to 24 are designated by the same reference numerals, and their description will be omitted. In Figure 25, the bottom side of the paper is the front side of the product 200.

The packaging material 100 according to embodiment 3 differs from the packaging material 100 according to embodiment 1 in the structure of the cardboard side panels 50 and cushioning material 20 used in the packaging material 100. Other than the cardboard side panels 50 and cushioning material 20, the configuration of the packaging material 100 according to embodiment 3 is the same as the configuration of the packaging material 100 according to embodiments 1 and 2.

The side cardboard 50 has a corner 57 formed by the adjacent side surfaces of the side cardboard 50. When viewed in the first direction D1 (see Figure 2), the side cardboard 50 has a corner 57 of the side cardboard 50 that is located outside the housing corners 250 located at both ends of the side surface 212 of the housing 210.

The side corrugated board 50 has a fold line 58 formed in a mountain fold on the side adjacent to the side of the side corrugated board 50 supported by the cushioning material 20, protruding toward the side opposite the side on which the product 200 to be packed in the side corrugated board 50 is placed. The fold line 58 is formed along the corner 57 of the side corrugated board 50. The sides of the side corrugated board 50 supported by the cushioning material 20 are the left side corrugated board 52 and the right side corrugated board 54. The sides adjacent to the side of the side corrugated board 50 supported by the cushioning material 20 are the front side corrugated board 51 and the rear side corrugated board 53.

When viewed in the vertical direction (Z-axis direction) of the product 200, the packaging material 100 of embodiment 3 has fold lines 58 provided along the vertical direction (Z-axis direction) of the corners 57 near the left and right corners 57 of the front surface 51a and back surface 53a of the side cardboard 50. In other words, the front side cardboard 51 and the rear side cardboard 53 have fold lines 58 near the corners 57 that form the four corners when viewed in the vertical direction (Z-axis direction) of the product 200.

The fold line portion 58 is a portion that is folded along the vertical direction (Z-axis direction) of the side cardboard box 50. The fold line portion 58 is formed so as to extend along the corner portion 57 in the vertical direction (Z-axis direction) of the side cardboard box 50. The fold line portion 58 is a portion that is formed in a mountain fold shape so as to protrude outward from the side cardboard box 50, and is a portion that is formed in a mountain fold shape so as to protrude on the side opposite to the side on which the product 200 packaged in the side cardboard box 50 is placed.

When viewed in the vertical direction (Z-axis direction) of the product 200, the front side corrugated cardboard 51 and the rear side corrugated cardboard 53 have an inner surface portion 58a at the center and an outer surface portion 58b at the end portions in the left-right direction (X-axis direction) of the product 200. When viewed in the vertical direction (Z-axis direction) of the product 200, the inner surface portion 58a forms a side that follows the left-right direction (X-axis direction), and the outer surface portion 58b forms a side that is inclined with respect to the left-right direction (X-axis direction). The fold line portion 58 forms the boundary between the inner surface portion 58a and the outer surface portion 58b. When viewed in the vertical direction (Z-axis direction) of the product 200, the fold line portion 58 is formed at a position closer to the end than to the center of the front side corrugated cardboard 51 and the rear side corrugated cardboard 53.

The product 200 has housing corners 250 at both ends in the front-to-rear direction (Y-axis direction) of the left side surface 212b and right side surface 212d, where the cushioning material 20 is provided. The side corrugated cardboard 50 also has corners 57 of the side corrugated cardboard 50 outside the housing corners 250 of the product 200. The packaging material 100 according to embodiment 3 has fold lines 58 along the corners 57 of the side corrugated cardboard 50 in the front side corrugated cardboard 51 and rear side corrugated cardboard 53, which are adjacent to the left side corrugated cardboard 52 and right side corrugated cardboard 54 supported by the cushioning material 20.

When viewed in the first direction D1 (see Figure 2), the multiple cushioning materials 20 have chamfered C-shaped portions 29 at the cushioning material corners 29b, which are the corners of the cushioning materials 20 on the side where the corners 57 of the side cardboard panels 50 are located. When viewed in the vertical direction (Z-axis direction) of the product 200, the cushioning materials 20 have C-shaped portions 29 at the cushioning material corners 29b.

In the front-to-back direction (Y-axis direction) of the product 200, the C-surface shaped portion 29 of the cushioning material 20 arranged near the rear side cardboard 53 has the following configuration: When viewed in the up-down direction (Z-axis direction) of the product 200, the C-surface shaped portion 29 forms a side wall between the side surface portion 29a facing the rear side cardboard 53 and the contact surface portion 21 facing the left side cardboard 52 or the right side cardboard 54. When viewed in the up-down direction (Z-axis direction) of the product 200, the C-surface shaped portion 29 is inclined with respect to the front-to-back direction (Y-axis direction) and left-to-right direction (X-axis direction) of the product 200.

In the front-to-back direction (Y-axis direction) of the product 200, the C-surface shaped portion 29 of the cushioning material 20 located near the front side cardboard 51 has the following configuration: When viewed in the up-down direction (Z-axis direction) of the product 200, the C-surface shaped portion 29 forms a side wall between the side surface portion 29a facing the front side cardboard 51 and the contact surface portion 21 facing the left side cardboard 52 or the right side cardboard 54. Note that if, in the front-to-back direction (Y-axis direction) of the product 200, the side surface of the cushioning material 20 toward the center of the product 200 is defined as the inner side surface of the cushioning material 20 and the side surface of the cushioning material 20 toward the end of the product 200 is defined as the outer side surface of the cushioning material 20, the side surface portion 29a forms the outer side surface of the cushioning material 20.

[Effects of the packaging material 100]
Packaging material 100 according to the third embodiment has fold line 58 along corner 57 of side cardboard box 50 near corner 57. Fold line 58 is formed in a mountain fold on the side of side cardboard box 50 adjacent to the side supported by cushioning material 20 so as to protrude to the side opposite to the side on which product 200 to be packed in side cardboard box 50 is placed.

In the packaging material 100 according to embodiment 3, the side cardboard panel 50 has a fold line 58, so that even when the surface of the side cardboard panel 50 on the side where the cushioning material 20 is provided is pinched by a clamp-type forklift 300, the fold line 58 of the side cardboard panel 50 will bend preferentially. Therefore, the packaging material 100 suppresses deformation of the side of the side cardboard panel 50 on the side where the cushioning material 20 is provided, allowing for a clean fold line, suppressing the occurrence of wrinkles at the corners 57 of the side cardboard panel 50, and also suppressing tearing.

Furthermore, the packaging material 100 according to the third embodiment has a chamfered C-shaped portion 29 at the corners 29c of the cushioning material 20. Therefore, compared to when the side cardboard box 50 is rectangular, even if the corners 57 are located on the inside due to the fold line 58, the following advantages can be achieved when viewed from the top-to-bottom direction (Z-axis direction) of the product 200. Because the packaging material 100 has the above configuration, when a worker places the side cardboard box 50 over the product 200, the C-shaped portion 29 ensures a gap between the corners 57 and the cushioning material 20, making it less likely for the side cardboard box 50 and the cushioning material 20 to collide. In addition to the advantages of the packaging material 100 according to the first embodiment, which includes the cushioning material 20, the packaging material 100 according to the third embodiment can further reduce the occurrence of wrinkles and tears at the corners 57 and other portions of the side cardboard box 50.

Embodiment 4.
FIG. 27 is a perspective view of the floor cushioning material 10 and floor cardboard 40 of the packaging material 100 according to embodiment 4. FIG. 28 is a top view of the floor cushioning material 10 and floor cardboard 40 of the packaging material 100 according to embodiment 4. FIG. 29 is an exploded perspective view of the floor cushioning material 10 of the packaging material 100 according to embodiment 4. FIG. 30 is a vertical cross-sectional view of the floor cushioning material 10 of the packaging material 100 according to embodiment 4, taken along the longitudinal direction. FIG. 30 is a partial cross-sectional view of the cross-section of the floor cushioning material 10 at line B-B in FIG. 28, viewed in the direction of the arrows. Parts having the same configuration as those in the packaging material 100 of FIGS. 1 to 28 are designated by the same reference numerals, and their description will be omitted.

The packaging material 100 according to embodiment 4 differs from the floor cushioning material 10 according to embodiment 1 in the structure of the floor cushioning material 10. Other than the floor cushioning material 10, the configuration of the packaging material 100 according to embodiment 4 is the same as the configuration of the packaging material 100 according to embodiments 1 to 3.

In the packaging material 100 according to embodiment 4, the floor cushioning material 10 includes an attachment portion 15. The floor cushioning material 10 includes a floor-side main body portion 11 that extends along a portion that forms one side of the underside of the housing 210, and an attachment portion 15 that is detachably attached to the upper surface of the floor-side main body portion 11.

As shown in Figure 29, the packaging material 100 according to embodiment 4 has multiple openings 11a for inserting the mounting portions 15 on the upper surface of the floor-side main body 11, and the mounting portions 15 are inserted into the insertion openings 11a for attachment. Multiple protrusions 15d are formed on one surface of the mounting portions 15, and when attaching the protrusions 15d to the floor-side main body 11, the protrusions 15d are inserted into the openings 11a of the floor-side main body 11.

The mounting portion 15 is attached to the upper surface of the floor-side main body portion 11 of the floor cushioning material 10 by inserting the protrusion portion 15d into the opening 11a of the floor-side main body portion 11. The mounting portion 15 is removed from the upper surface of the floor-side main body portion 11 by pulling the protrusion portion 15d out of the opening 11a of the floor-side main body portion 11.

The mounting portion 15 forms a side wall that covers the side portion 212 of the product 200 along the floor-side main body portion 11. When the housing 210 is viewed in the first direction D1, the mounting portion 15 is formed so that the outer edge portion 15a of the mounting portion 15 on the side opposite to the side on which the housing 210 is placed extends beyond the floor cardboard side portion 42 that forms the side wall of the cardboard floor 40 and protrudes outward beyond the floor cardboard side portion 42. The outer edge portion 15a of the mounting portion 15 is the outer edge portion of the mounting portion 15 when the housing 210 is viewed in the first direction D1 (see Figure 2), and forms the outer edge of the housing 210 on the side opposite to the side on which the housing 210 is placed.

The mounting portion 15 is formed in a plate shape and extends along the longitudinal direction of the floor-side main body portion 11. When attached to the floor-side main body portion 11, the mounting portion 15 is formed to extend in the depth direction (Y-axis direction) of the product 200. When attached to the floor-side main body portion 11, the mounting portion 15 is formed to extend from the floor-side main body portion 11 upwardly of the floor-side main body portion 11, forming a side wall that covers the side of the product 200 along the longitudinal direction of the floor-side main body portion 11.

When attached to the floor-side main body 11 of the floor cushioning material 10, the mounting portion 15 covers the upper edge 42a of the floor cardboard side surface 42 of the floor cardboard 40, and the outer edge 15a of the mounting portion 15 protrudes outward beyond the floor cardboard side surface 42 of the floor cardboard 40. Note that outward here refers to the direction opposite the side on which the product 200 is placed, based on the position of the floor cushioning material 10, and toward the side covered by the side cardboard 50.

When attached to the floor-side main body 11 of the floor cushioning material 10, the outer edge 15a of the mounting portion 15 is arranged to extend along the floor cardboard side surface 42 from near a cardboard corner 46 to near an adjacent cardboard corner 46. A cardboard corner 46 is a corner formed by adjacent cardboard side surface portions 42.

The mounting portion 15 includes an inner surface portion 15b and an outer surface portion 15c. The inner surface portion 15b forms the inner wall of the mounting portion 15 and faces and abuts against the product 200 when the product 200 is packed in the packaging material 100, as shown in FIG. 30. The outer surface portion 15c forms the outer wall of the mounting portion 15 and faces and abuts against the side cardboard box 50 when the product 200 is packed in the packaging material 100, as shown in FIG. 30. The outer edge portion 15a is formed by one side of the outer surface portion 15c, for example, by the lower edge portion of the outer surface portion 15c.

It is desirable that the outer surface portion 15c be formed as an inclined surface. It is desirable that the outer surface portion 15c form an inclined surface facing upward and to the side when the product 200 is packaged in the packaging material 100. When a worker places the side cardboard 50 over the floor cushioning material 10 attached to the product 200, the side cardboard 50 slides along the outer surface portion 15c, which acts as a guide when moving the side cardboard 50.

[[Effects of the packaging material 100]]
The floor cushioning material 10 includes a floor-side main body portion 11 that extends along a portion that forms one side of the underside of the housing 210, and an attachment portion 15 that is detachably attached to the upper surface of the floor-side main body portion 11. The attachment portion 15 forms a side wall that covers a side portion 212 of the product 200 along the floor-side main body portion 11. When the housing 210 is viewed in the first direction D1, an outer edge portion 15a of the attachment portion 15 on the side opposite to the side on which the housing 210 is placed extends beyond the floor cardboard side portion 42 that forms the side wall of the floor cardboard 40 and protrudes outward beyond the floor cardboard side portion 42.

When a worker places the side cardboard 50 around the product 200 so as to surround the outer edge 15a of the mounting portion 15, the side cardboard 50 in contact with the outer edge 15a is pushed outward by the outer edge 15a and becomes bulged.

When the left and right sides of the side cardboard box 50 configured in this way are clamped by the attachment 310 of the clamp-type forklift 300, the portion of the side cardboard box 50 that bulges due to the outer edge 15a abuts the attachment 310 before the corners 57 (see Figure 1) of the side cardboard box 50. Even when force is applied from the left and right by the metal plate 315 of the attachment 310, pushing the side cardboard box 50 inward, the side cardboard box 50 is supported by the mounting portions 15 provided along the floor cardboard side portions 42 of the floor cardboard box 40. This prevents the packaging material 100 from wrinkling at the corners 57 and other areas of the side cardboard box 50, and also prevents tears.

Each of the above-mentioned embodiments 1 to 4 can be implemented in combination with one another. Furthermore, the configurations shown in the above-mentioned embodiments are merely examples, and can be combined with other known technologies. Parts of the configuration can also be omitted or modified without departing from the spirit of the invention.

10 Floor cushioning material, 10a Right floor cushioning material, 10b Left floor cushioning material, 11 Floor-side main body portion, 11a Opening, 12 Protruding portion, 13 Cutout portion, 15 Mounting portion, 15a Outer edge portion, 15b Inner surface portion, 15c Outer surface portion, 15d Protrusion portion, 20 Cushioning material, 20A Cushioning material, 20L Cushioning material, 20a First side cushioning material, 20a1 First upper side cushioning material, 20a2 First lower side cushioning material, 20b Second side cushioning material, 20b1 Second upper side cushioning material, 20b2 Second lower side cushioning material, 21 Contact surface portion, 22 Inclined portion, 23 Lightening portion, 23a First lightening portion, 23a1 First extension portion, 23a2 Second extension portion, 23b Second lightening portion, 27 Mounting surface portion, 28 Inclined surface, 29 C-shaped portion, 29a Side portion, 29b Cushioning material corner portion, 29c Cushioning material corner portion, 30 Top surface cushioning material, 30a Right top surface cushioning material, 30b Left top surface cushioning material, 31 Top surface side main body portion, 32 Protruding portion, 40 Floor surface cardboard, 40a Outer surface, 40L Floor surface cardboard, 41 Bottom plate portion, 41a Edge portion, 42 Side portion of floor cardboard, 42a Upper edge portion, 44 L-shaped handle, 45 Floor surface cardboard handle, 46 Cardboard corner portion, 50 Side cardboard, 50a Outer surface, 50b Inner surface, 50L Side cardboard, 50R Side cardboard, 51 Front side cardboard, 51a Front portion, 52 Left side cardboard, 53 Rear side cardboard, 53a Back surface, 54 Right side cardboard, 55 Side cardboard handle, 56 bulging portion, 57 corner portion, 57L corner portion, 57R corner portion, 58 fold line portion, 58a inner side portion, 58b outer side portion, 60 top cardboard, 60a outer surface, 60L top cardboard, 70 band, 70L band, 100 packaging material, 100L packaging material, 100R packaging material, 200 product, 210 housing, 211 bottom surface portion, 212 side portion, 212a front side portion, 212b left side portion, 212b1 front edge portion, 212b2 rear edge portion, 212c rear side portion, 212d right side portion, 212d1 front edge portion, 212d2 rear edge portion, 213 top surface portion, 214 side corner portion, 215 opening portion, 220 door, 230 Handle, 250: Corner of housing, 300: Clamp type forklift, 310: Attachment, 310L: Attachment, 315: Metal plate, 320: Attachment rubber, 320a: Attachment rubber, 320b: Attachment rubber, 340: Attachment rubber, 510: Center portion, 520: Center portion, 530: Middle portion.

Claims (11)

A cylindrical cardboard wall surrounding a housing of a product having a housing;
a plurality of flat cushioning materials detachably attached to side surfaces that form the side surfaces of the housing and that are covered by the cardboard side surfaces ;
Equipped with
The plurality of buffer materials include:
The cushioning material is attached to both ends of the side surface portion when viewed in a first direction along the surface of the side surface portion, which is the axial direction of the side surface cardboard, and is formed to extend in the first direction.
The pair of buffer materials are:
a contact surface portion that contacts the inner surface of the cylindrical side cardboard surrounding the housing;
The cardboard box is disposed between the cardboard side and the housing, and the cardboard side is supported by the contact surface portion from the side where the cardboard side is disposed .
The side cardboard is
On a side surface adjacent to the side surface of the side cardboard supported by the cushioning material, a folding line portion formed in a mountain fold so as to protrude to the opposite side from the side where the product to be packed in the side cardboard is arranged,
The plurality of buffer materials include:
A packaging material having a chamfered C-shaped portion at the corner of the cushioning material on the side where the corner of the side cardboard is located when viewed in the first direction . The pair of buffer materials are:
a mounting surface portion that forms a surface to be attached to the side surface portion;
The packaging material according to claim 1, further comprising a recessed portion recessed from the mounting surface portion into the interior of the cushioning material. The pair of buffer materials are:
The packaging material according to claim 1 or 2, further comprising an inclined portion that forms an inclined surface at a tip end portion in the first direction. a top surface cushioning material installed along a portion forming one side of the top surface of the housing;
a top surface cardboard box that covers the top surface of the housing and is placed on the top surface cushioning material;
a floor cardboard sheet placed to cover the bottom surface of the housing;
a cushioning material attached along a portion of the bottom surface of the housing that forms one side and supports the product on the cardboard floor;
The packaging material according to claim 1 or 2, further comprising: The cardboard box further includes a band wound around the outer surfaces of the top cardboard box, the side cardboard box, and the floor cardboard box,
The side corrugated cardboard is
The packaging material according to claim 4, wherein the bands are wrapped around the outer surfaces of the top cardboard, the side cardboard, and the floor cardboard, thereby fixing the packaging material to the side portions via the plurality of cushioning materials. The plurality of buffer materials include:
The packaging material according to claim 4, wherein the cushioning materials are separated vertically along the first direction of the side surface, and the thickness of each of the cushioning materials corresponds to the distance of the gap between the housing of the product and the side cardboard. The top surface cushioning material is
a top surface side main body portion extending along a portion forming one side of the top surface of the housing;
a protruding portion protruding from the top surface side main body portion in a direction facing the side surface portion of the housing and toward the outside of the product;
The packaging material of claim 4 , comprising: The side corrugated cardboard is
Corners formed by adjacent side surfaces of the side cardboard, the corners of the side cardboard being located outside the housing corners located at both ends of the side surface of the housing when viewed in the first direction,
The bent line portion is
The packaging material according to claim 4 , wherein the corrugated cardboard is formed along the corners of the side surfaces. The floor cushioning material is
a floor-side main body portion extending along a portion that forms one side of the lower surface of the housing;
a mounting portion that is detachably attached to an upper surface of the floor surface side main body portion;
Including,
The mounting portion is
A side wall covering the side surface portion of the product is formed along the floor surface side main body portion,
5. The packaging material according to claim 4, wherein, when the housing is viewed in the first direction, the outer edge of the mounting portion opposite the side on which the housing is placed extends beyond the floor cardboard side portion that forms the side wall of the floor cardboard and protrudes outward beyond the floor cardboard side portion. 5. The packaging material according to claim 4 , wherein the product is a refrigerator. A packaging method for a product having a housing, using a cylindrical side cardboard box that surrounds the housing, and a plurality of flat cushioning materials that are detachably attached to side portions that form the sides of the housing and are covered by the side cardboard box,
The plurality of buffer materials include:
The cushioning material is attached to both ends of the side surface portion when viewed in a first direction along the surface of the side surface portion, which is the axial direction of the side surface cardboard, and is formed to extend in the first direction.
The pair of buffer materials are:
a contact surface portion that contacts the inner surface of the cylindrical side cardboard surrounding the housing;
The pair of cushioning materials are disposed between the side cardboard boxes and the housing, and the contact surface portions support the side cardboard boxes from the side where the housing is disposed ,
The side corrugated cardboard is
On a side surface adjacent to the side surface of the side cardboard supported by the cushioning material, a folding line portion formed in a mountain fold so as to protrude to the opposite side from the side where the product to be packed in the side cardboard is arranged,
The plurality of buffer materials include:
A packaging method in which the corner of the cushioning material on the side where the corner of the side cardboard is placed when viewed in the first direction has a chamfered C-shaped portion .