JP6874263B2 - Cushioning material and packing method using cushioning material - Google Patents

Description

The present invention relates to a cushioning material used for packing an object to be contained having a shape such as a thin rectangle represented by a mobile phone, a portable game machine, and the like, and a packing method using the cushioning material.

Conventionally, when packing electronic devices (thin rectangular objects) such as mobile phones, handheld game machines, tablets, and small laptops in cardboard boxes, bubbles are provided so that these items can be protected from impact. A cushioning material or a cushioning material in which corrugated cardboard sheets are laminated in multiple layers is used. These cushioning materials are packaged in a cardboard box together with the electronic devices, and are configured to protect the electronic devices from impacts during transportation.

Such cushioning materials are often used in the purchase of electronic devices whose number of handling materials has been increasing in recent years. For example, when electronic devices such as mobile phones, handheld game machines, and tablets that are no longer needed are purchased and shipped to stores, the cushioning material described above is used together with a cardboard box for accommodating and transporting these electronic devices. It is used.
On the other hand, in recent years, there have been requests to reduce the amount of packaging materials and the types of packaging materials as much as possible in order to reduce the waste disposal cost, and such requests are for electronic devices. The same applies to purchases. That is, in the case of packing using a corrugated cardboard box, it is preferable to form a cushioning material with the same corrugated cardboard sheet base paper as that forming the box, and match the types of waste. In addition, when it is formed of corrugated cardboard sheet base paper, the cushioning material should have a structure as compact as possible.

As a corrugated cardboard cushioning material that can meet such a demand, those shown in the following Patent Documents 1 and 2 have already been developed.
That is, Patent Document 1 discloses an impact mitigation transport container in which a cushioning material is formed from the same corrugated cardboard sheet base paper that constitutes the container body. The impact mitigation transport container of Patent Document 1 is for holding a product which is an container by bending a piece of paper constituting the container body, and a side piece of a peripheral portion, a space portion surrounded by the side piece, and the side thereof. An edge piece formed so as to project from one piece to the space side so as to hold the side end portion of the product, and a product pressing piece that presses and holds the corner of the product discontinuous with the edge piece on both end sides of the edge piece. It is composed of a flexible film that covers the entire surface of the space. That is, in the impact mitigation transport container of Patent Document 1, by pressing the product with the product pressing piece, the impact applied to a thin and impact-sensitive product such as a personal computer during transportation or dropping can be mitigated, or the impact can be applied. It is configured to prevent it from being transmitted to the product.

Further, Patent Document 2 also discloses a holding panel for packaging using the same corrugated cardboard sheet base paper as a cushioning material that constitutes the container body. The packing holding panel of Patent Document 2 can reliably hold a case for a micro product containing a photomask, a color filter, a cubic case for an etching accessory product, and the like, and vibrate these articles. It is safe to protect from impact and can be transported.

Specifically, the holding panel for packing of Patent Document 2 is bent outside these folding curves by providing horizontal folding curves or vertical folding curves on each of the four sides of a substrate made of cardboard, corrugated cardboard, or the like. An upright piece is formed, and a key-shaped cutting line is formed at each of the four corners of the portion surrounded by these folding curves from the inside to the outside of the folding curve so as to be orthogonal to these folding curves. It is composed of.

Utility Model Registration No. 3142797 Jitsukaisho 60-134720

By the way, the impact mitigation transport container of Patent Document 1 is provided with a space portion on the center side where no paper piece does not exist, and a flexible film covering the entire surface portion is provided in this space portion. .. That is, in the impact mitigation transport container of Patent Document 1, since the space portion exists on the central side, the supporting strength of the product pressing piece or the like is weak in the first place, and the edge piece or the product pressing piece existing around the space portion protrudes into the space portion. It is easy to bend because it is installed in a vertical position. Therefore, the impact mitigation transport container of Patent Document 1 cannot reliably and stably hold and transport the product.

Further, in the impact mitigation transport container of Patent Document 1, a flexible film is used to reliably contain and transport the contents to be contained, but it is necessary to treat a film different from corrugated cardboard as waste. Therefore, it is difficult to narrow down the types of packaging materials in consideration of disposal costs.
Further, in the holding panel for packing of Patent Document 2, the horizontal fold curve or the vertical fold curve formed on each of the four sides of the substrate is formed as a fold line close to a straight line, and the horizontal fold curve or the vertical fold curve is formed. The central portion of the holding panel surrounded by the curved line is configured to project downward or upward while maintaining a flat surface state. Therefore, when an attempt is made to transport an electronic device having a flat outer shape or an electronic device having a small size with such a holding panel, the electronic device slips on the holding panel and a cushioning effect on the product is surely obtained. There was a possibility that it could not be done.

The present invention has been made in view of the above-mentioned problems, and a cushioning material and a cushioning material capable of reliably accommodating an object to be contained having a thin rectangular shape or the like and exerting a sufficient cushioning effect are used. The purpose is to provide a packing method.

In order to solve the above problems, the cushioning material of the present invention takes the following technical measures.
That is, the cushioning material of the present invention is a cushioning material that is deployed between the contained object and the corrugated cardboard box to alleviate the impact applied to the contained object when the contained object is accommodated inside the corrugated cardboard box. The cushioning material is provided with a pad that is housed inside the corrugated cardboard box and holds the object to be contained from below or above, and the pad has a rectangular plate shape along the horizontal direction. It has a pad body formed in a corrugated cardboard and a folded piece that is foldably connected to each of the four sides of the pad body and extends downward or upward from the four sides of the pad body, and has four corners of the pad body. the rigid portion is prevented from being deformed in the disconnected Rutotomoni vertically from the pad center side by the score lines are formed, between the rigid portion adjacent to each other in the pad body, from one of the rigid portion A folding line that extends while curving toward the center of the pad toward the other rigid portion is formed, and the contained object is deformed upward or downward toward the center of the pad body separated by the folding line. A deformed portion capable of forming a space for accommodating the above is formed, and the deformed portion is supported by a rigid portion .

It is preferable that the folding line is formed so as to extend in a direction intersecting the rib forming direction of the core of the corrugated cardboard sheet constituting the pad body.
Further, in the packing method using the cushioning material of the present invention, when packing the contents to be contained inside the corrugated cardboard box using the above-mentioned cushioning material, the folded piece faces downward inside the corrugated cardboard box. The pad is housed so that the folded piece is along the inner surface of the corrugated cardboard box to form a lower pad, and the contained object is placed on a deformed portion of the housed lower pad. From the top of the container, a pad that is upside down from the lower pad is accommodated so that the folded piece of the pad is along the inner side surface of the cardboard box to form an upper pad, and the pad is formed as an upper pad with respect to the rigid portion of the lower pad. By pressing the upper pad against the lower pad until the rigid portions of the upper pad are abutted, the deformed portion of the lower pad is deformed downward and the deformed portion of the upper pad is deformed upward to both deform. The object to be contained is accommodated in a space formed between the portions.

According to the cushioning material of the present invention and the packing method using the cushioning material, the object to be contained can be reliably accommodated regardless of its shape and size, and a sufficient cushioning effect can be exhibited.

It is an exploded view which showed the use mode of the cushioning material of this embodiment. It is a perspective view of the pad used for the cushioning material of this embodiment. It is a development view of the pad used for the cushioning material of this embodiment. It is sectional drawing along the front-rear direction of the cushioning material of this embodiment. It is sectional drawing along the left-right direction of the cushioning material of this embodiment. It is sectional drawing which showed the relationship between the cushioning material of this embodiment, and the contained object. It is a figure which shows the state which put the contents to be placed on the lower pad in the packing method of this embodiment. It is a figure which shows the state which put the upper pad from the top of the contained object in the packing method of this embodiment. It is a figure which shows the state which pushed down the rigid part of the upper pad downward until it abuts with the rigid part of a lower pad in the packing method of this embodiment. It is a figure which shows the deformed state of the deformed part which occurs when the rigid part of the upper pad is pushed down in the packing method of this embodiment.

Hereinafter, embodiments of the cushioning material 1 and the packing method using the cushioning material 1 of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an exploded view of a corrugated cardboard box 2 in which the cushioning material 1 of the present embodiment is used.
As shown in FIG. 1, in the cushioning material 1 of the present embodiment, an object C, which is smaller than the inner dimensions of the corrugated cardboard box 2, is placed inside the corrugated cardboard box sheet 3 assembled in a box state, at a distance from the side surface of the box. It is used when opening and accommodating. That is, the cushioning material 1 of the present embodiment is arranged between the contained object C and the corrugated cardboard box 2 to fix the contained object C inside the corrugated cardboard box 2 so as not to move. The structure is such that the impact from the cardboard box 2 does not directly act on the contained object C.

Specifically, the cushioning material 1 of the present embodiment is housed inside the corrugated cardboard box 2, and the contained object C is sandwiched and fixed in the vertical direction in a sealed state. The cushioning material 1 of the present embodiment has a pad 4 that holds the object C from below and / or from above.
That is, the cushioning material 1 of the present invention may have only one pad 4 above or below the contained object C, or one pad 4 above or below the contained object C, for a total of two cushioning materials 1. It may have the pad 4 of. For example, when the above-mentioned pad 4 is provided only on the upper side of the contained object C by using a conventional corrugated cardboard cushioning material on the lower side of the contained object C, or conversely, on the upper side of the contained object C. The cushioning material 1 of the present invention includes the case where the above-mentioned pad 4 is provided only on the lower side of the object to be contained C by using a conventional corrugated cardboard cushioning material or the like.

In the present embodiment, the cushioning material 1 is provided with two pads 4 in total, one on each of the upper side and the lower side of the object C.
As shown in FIG. 1, the corrugated cardboard box 2 in which the cushioning material 1 of the present embodiment is used has an empty corrugated cardboard box sheet 3 that opens upward and an opening of the corrugated cardboard box sheet 3 to the bottom of the box. The lower pad 4D to be inserted, the contained object C inserted into the box next to the lower pad 4D and placed on the upper side of the lower pad 4D, and the contained object C so as to be located on the lower center side. It has an upper pad 4U that is inserted into the box next to the object C, and the lower pad 4D, the object C, and the upper pad 4U are accommodated, and the lid is closed and sealed. ..

The cushioning material 1 of the present embodiment has both the upper pad 4U and the lower pad 4D described above, and is configured to hold the object C so as to be sandwiched between the two pads 4U and 4D. ing. Pads 4 having exactly the same configuration are used for the upper pad 4U and the lower pad 4D, but the upper pad 4U and the lower pad 4D are arranged in opposite directions in the vertical direction.

Next, the pad 4 constituting the cushioning material 1 of the present embodiment will be described in detail.
The pads 4 used for the above-mentioned upper pad 4U and lower pad 4D are foldably connected to the pad body 6 formed in a rectangular plate shape along the horizontal direction and the four sides of the pad body 6, respectively, and the pad body. It has a folded piece 7 extending from the four sides of No. 6 in either the upper or lower direction. That is, the folded piece 7 is folded back in either the upper or lower direction with respect to the pad body 6 facing the horizontal direction.

To make it easier to understand the structure of the pad 4 described above, the lower pad 4D as shown in FIG. 2 will be described as an example. The lower pad 4D will be the pad body 6 arranged along the horizontal direction. It has four folded pieces 7 extending downward from the four sides of the pad body 6. Rigid portions 9 separated from the pad center side 6C by the notch lines 8 are formed at the four corners of the pad body 6. Further, in the pad body 6, between the rigid portions 9 adjacent to each other in the left-right direction or the front-rear direction, one rigid portion 9 is curved toward the other rigid portion 9 so as to approach the pad center side 6C. An extending folding line 10 is formed. Further, the central side (pad central side 6C) of the pad body 6 separated by the folding line 10 is a portion capable of being deformed upward or downward with respect to the rigid portion 9, and is an object to be contained. It is a deformed portion 11 capable of forming a space for accommodating C.

Next, the pad body 6 and the folded piece 7 constituting the pad 4 will be described.
The pad body 6 is formed of a corrugated cardboard sheet base paper (corrugated cardboard paperboard) formed in a horizontal shape (in other words, the shape of the bottom surface of the corrugated cardboard box 2) inside the corrugated cardboard box 2, and has a plate surface in the horizontal direction. It is deployed so that it faces. In the case of the present embodiment, the pad body 6 is formed in a rectangular plate shape in which the left-right direction is longer than the front-rear direction. Folded pieces 7 are connected to the four sides of the pad body 6, that is, the front side, the left side, the rear side, and the right side, respectively.

The folded piece 7 is a piece of paper that can be bent upward or downward from the four sides of the pad body 6, and is foldably connected to the four sides of the pad body 6 described above. If such folded pieces 7 are provided on the four sides of the pad body 6, each folded piece 7 can be bent and inserted when the pad 4 is inserted inside the corrugated cardboard box sheet 3 assembled in a housing shape. When each of the folded folded pieces 7 comes into contact with the inner surface of the box in a surface state, each pad 4 can be fixed to the inside of the main body of the corrugated cardboard box 2 so as not to move in the horizontal direction.

Further, in the case of the lower pad 4D, the folded piece 7 is bent downward from the four sides of the pad body 6. The upper pad 4U has a structure in which the lower part is turned upside down, and the folded piece 7 of the upper pad 4U is bent so as to extend upward from the four sides of the pad body 6.
Further, the folded piece 7 has a width narrower at the tip located below the base end connected to the pad body 6. That is, in the case of the folded piece 7 located on the front side of FIG. 2, the width of the tip (lower end) along the left-right direction is narrower than the width of the base end (upper end) along the left-right direction. It is formed in a unique shape (trapezoidal shape). If the folded pieces 7 having a narrower tip than the base end are used in this way, when the cushioning material 1 is inserted inside the corrugated cardboard box 2, the adjacent folded pieces 7 are folded back to each other. There is no need to cushion each other, and the folded pieces 7 can be folded back to an angle along the inner surface of the box without any trouble.

Further, the dimensions of the folded piece 7 along the vertical direction correspond to the size (inner dimension) of the corrugated cardboard box 2 in the height direction. That is, in the packed state, the lower end of the folded piece 7 is in contact with the bottom surface (bottom inner surface) of the cardboard box 2 in the case of the lower pad 4D, and the upper end of the folded piece 7 in the case of the upper pad 4U. Is in contact with the lid surface (inner surface of the lid) of the cardboard box 2, and the sum of the dimensions of the folded piece 7 of the lower pad 4D along the vertical direction and the dimensions of the folded piece 7 of the upper pad 4U along the vertical direction. The calculated dimensions are set to be exactly equal to the inner dimensions of the cardboard box 2 in the height direction. If the combined dimensions of the folded pieces 7 of the upper and lower pads 4 are made substantially equal to the inner dimensions in the height direction of the cardboard box 2 main body in this way, the lid is closed after the lower pads 4D and the upper pads 4U are accommodated. When the cardboard box 2 is sealed, the folded pieces 7 of the upper and lower pads 4 are lined up in the vertical direction and sandwiched between the lid and the bottom so that the lower pad 4D and the upper pad 4U do not move inside the cardboard box 2. It becomes possible to fix the object to be contained C, and the object to be contained C can be reliably accommodated on the central side of the main body of the corrugated cardboard box 2 away from the box wall.

The rigid portion 9 is a portion formed at the four corners of the front, back, left, and right of the pad body 6, and while the deformed portion 11 on the center side can be deformed in the vertical direction while the object C is housed, the rigid portion 9 is deformed in the vertical direction. It has a regulated structure.
Specifically, the rigid portions 9 are arranged between the edges of the two folded pieces 7 that are adjacent to each other and intersect at an angle of approximately 90 degrees in a plan view, and the edges of these two folded pieces 7. It has a configuration in which the corner portion 6S (corner portion) of the pad body 6 and the three are combined. These three pieces of paper are configured to intersect each other at an angle of 90 degrees, and the three pieces are orthogonal to each other so that high support strength can be exhibited with respect to the deformed portion 11.

For example, taking the rigid portion 9 formed on the left front side of the lower pad 4D as an example, the left edge portion of the folded piece 7 on the front side, the front edge portion of the folded piece 7 on the left side, and the left front side of the pad body 6 The corner portion 6S forms a rigid portion 9 on the left front side.
Since the above-mentioned rigid portion 9 has a structure in which three pieces of paper are connected in an orthogonal state, if the rigid portions 9 of the upper and lower pad portions 4U and 4D are housed in the box in a butt state, the corrugated cardboard box 2 It hardly moves inside the box. Therefore, the deformed portion 11 described later can be stably supported.

A cut line 8 is formed between the four corners 6S of the pad body 6 on which the above-mentioned rigid portion 9 is formed and the central side 6C of the pad body 6. The cut line 8 penetrates the pad main body 6 in the thickness direction and cuts the pad main body 6 so as to be continuous in the horizontal direction, and has a configuration in which the pad main body 6 is separated into a central side 6C and a four corner side 6S. That is, in the case of the cut line 8 formed on the left front side of the lower pad 4D, the cut line 8 is formed so as to be substantially L-shaped when the pad body 6 is viewed from above. The rigid portion 9 on the left front side and the deformed portion 11 on the central side are separated from each other by two independent sections via the wire 8. Further, in the case of the cut line 8 formed on the right front side of the lower pad 4D, the cut line 8 is formed as if the cut line 8 on the left front side is inverted, and the cut line 8 is formed through the cut line 8 on the right front side. The rigid portion 9 and the deformed portion 11 on the central side of the above are separated into two mutually independent sections.

Further, the above-mentioned cut line 8 extends beyond the outer edge of the pad body 6 to the folded piece 7. Specifically, in the case of the notch line 8 formed on the left front side of the lower pad 4D, it extends to the left end side of the front folded piece 7 so as to be substantially L-shaped in front view. It is terminated at the left end side of the folded piece 7 on the front side. Further, it extends to the front end side of the left folded piece 7 so as to have a substantially L shape in a side view, and terminates at the front end side of the left folded piece 7. The cut line 8 formed on the surface of the pad body 6 described above is continuously connected from the end of one folded piece 7 to the end of the other folded piece 7 so as to form a single line segment. ..

The rigid portion 9 is centered on the front folded piece 7 and the pad body 6 by the cut line 8 extending so as to straddle the three members of the two folded pieces 7 described above and the pad body 6 straddling the folded pieces 7. It is isolated from the side 6C and the left folded piece 7, and the deformed portion 11 formed on the central side 6C of the pad body 6 can be deformed with respect to the rigid portion 9.
By the way, as described above, on the surface of the pad body 6, a "folding line 10" is formed which extends from one rigid portion 9 toward the other rigid portion 9 while being curved so as to approach the pad center side 6C. ing. This "folding line 10" is the most characteristic configuration in the present application.

The central side 6C of the pad body 6 separated by the folding line 10 is a deformed portion 11 that can be deformed upward or downward with respect to the rigid portions 9 formed at the four corners. , It is possible to form a space for accommodating the object C. In the cushioning material 1 of the present invention, by providing such a folding line 10 and the deformed portion 11, the object to be contained C can be reliably accommodated regardless of its shape and size, and a sufficient cushioning effect can be obtained. It is characterized by.

Next, the folding line 10 and the deformed portion 11, which are the features of the cushioning material 1 of the present invention, will be described in detail.
As can be seen from the developed view shown in FIG. 3, the folding line 10 is formed between the rigid portions 9 adjacent to each other in the pad main body 6. That is, it connects from the vicinity of the substantially L-shaped curved corner of the notch line 8 defining the rigid portion 9 to the vicinity of the substantially L-shaped curved corner of the notch line 8 defining the adjacent rigid portion 9. It has become a thing. Specifically, the folding line 10 is formed so as to connect the substantially top portion of the corner adjacent to the corner from the substantially top portion (the portion having the smallest radius of curvature).

Note that FIG. 3 shows a front view, a right side view, and a bottom view of the cushioning material 1 (planar cushioning material 1) before assembly, but the rear view has the same shape as the front view, and the left side surface. The view is the same as the right side view, and the plan view has the same shape as the bottom view.
In the case of the present embodiment, the folding line 10 connects between the rigid portion 9 on the left front side and the rigid portion 9 on the right front side, and between the rigid portion 9 on the left rear side and the rigid portion 9 on the right rear side. It is composed of two pieces, one that connects the two, and both are along the left-right direction.

In other words, the pad body 6 of the present embodiment has a core rib 12 formed along the front-rear direction as shown in FIG. 3, and the above-mentioned folding line 10 is a core rib 12 forming direction. It is formed so as to extend in a direction intersecting with respect to. If the folding line 10 is formed in a direction intersecting the rib 12 forming direction of the core in this way, the pad body 6 will not be folded back in the wrong direction due to being obstructed by the rib 12 forming direction.

Both of these two folding lines 10 are gently curved and formed so that the midway side is closer to the center (center) of the pad body 6 than the both end sides in the longitudinal direction. Further, the bending direction of the two folding lines 10 is curved so as to bulge rearward when connecting the front rigid portions 9 to the left and right, and forward when connecting the rear rigid portions 9 to the left and right. It is curved so as to bulge toward it, and the bending direction is opposite between the two folding lines 10.

Further, the folding line 10 is formed by a broken line unlike the cutting line 8 described above. That is, the folding line 10 is used to assist or promote the folding of the pad body 6, and does not separate one side and the other side of the line. Therefore, the folding line 10 does not have to be a continuous breaking line like the cutting line 8.
Whether the broken line interval of the folding line 10 is set wide or narrow depends on the thickness and structure (laminated structure such as single and double) of the corrugated cardboard sheet used for the cushioning material 1, but is generally cut. The length of the cut portion is 10 mm to 30 mm, the length of the uncut portion is 10 mm to 30 mm, and it is preferable to use a broken line in which the cut portion and the uncut portion are alternately provided.

Further, as described above, a deformation auxiliary line 13 for assisting the deformation of the deformation portion 11 is formed between the rigid portions 9 adjacent to each other in the left-right direction and the front-rear direction. The deformation auxiliary line 13 is formed along the boundary between the pad body 6 and the folded piece 7 and the first auxiliary line 13a that linearly connects the ends of the cut lines 8 formed at both ends of the folded piece 7. It has a second auxiliary line 13b and.

For example, taking the front folded piece 7 as an example, a notch line 8 defining a rigid portion 9 on the left front side is terminated on the left end side of the front folded piece 7, and the right end of the front folded piece 7 is used. On the side, a notch line 8 defining a rigid portion 9 on the right front side is terminated. The end of the cut line 8 on the left end side and the end of the cut line 8 on the right end side are connected by the first auxiliary line 13a described above.

The first auxiliary line 13a and the second auxiliary line 13b described above do not necessarily have to be formed, and only one auxiliary line may be used. For example, in the case of the present embodiment, of the four sides formed around the pad body 6, both the first auxiliary line 13a and the second auxiliary line 13b are formed on the folded pieces 7 on the front side and the rear side. Only the second auxiliary line 13b is formed on the folded piece 7 on the left side or the right side.

These deformation auxiliary lines 13 are composed of a broken line similar to the curved folding line 10 described above, or a line having a straight folding habit by simply using a box making machine or the like. If such a deformation auxiliary line 13 is formed in addition to the folding line 10, the deformed portion 11 provided on the central side 6C of the pad body 6 is more easily deformed with respect to the rigid portion 9, and the contained object C is formed. It becomes possible to form a space that can be accommodated more reliably.

The deformation portion 11 is a portion formed on the central side 6C of the pad body 6 separated by the folding line 10 and the deformation auxiliary line 13. The deformed portion 11 is formed as a hemispherically deformed portion upward or downward by pushing the central side 6C of the pad body 6 upward or downward with the folding line 10 and the deformation auxiliary line 13 as boundaries. It is possible to secure a space for accommodating the object to be contained C.

Specifically, in the case of the deformed portion 11 of the lower pad 4D shown in FIG. 2, the deformed portion 11 is formed as a portion sandwiched between the two front and rear folding lines 10 described above, and the folding line 10 is formed. When the central side 6C of the pad body 6 is pushed downward with the deformation auxiliary line 13 as a boundary, the portion is deformed so as to be recessed downward.
In the lower pad 4D of FIG. 2, the deformed portion 11 is a portion that curves downward, but in the upper pad 4U housed in the box upside down from the lower pad 4D, the deformed portion 11 is upward. It becomes a part that curves like a dome. Then, a space capable of accommodating the object C is formed in the vertical direction between the deformed portion 11 of the upper pad 4U that curves upward and the deformed portion 11 of the lower pad 4D that curves downward. Will be.

As shown in FIG. 6, the space (accommodation space) of the object to be accommodated C formed by the deformation of the deformed portion 11 is formed as a space in which the cross section cut along the left-right direction exhibits a rugby ball shape.
That is, in the DD cross section of FIG. 6 in which the middle of the pad body 6 in the front-rear direction is cut along the left-right direction, the height from the lower deformed portion 11 to the upper deformed portion 11 increases as it is closer to both ends in the left-right direction. It is low, and the closer to the center side in the left-right direction, the higher the height from the lower deformed portion 11 to the upper deformed portion 11. That is, the above-mentioned space has a low height on the outer peripheral side of the space and a high height on the central side, and it is possible to form a space capable of accommodating the object C on the central side of the space.

Further, in the EE cross section of FIG. 6 in which the front side of the pad body 6 is cut along the left-right direction, the inner dimension in the vertical direction is lower than the height of the object C at any position in the left-right direction, and the space is large. There is no gap on the front side or the rear side of the space to take out the contained object C once housed inside the space.
Therefore, if the cushioning material 1 described above is used, the deformed portion 11 of the upper pad 4U folded upward with the curved folding line 10 as a boundary and the lower pad 4D folded downward with the curved folding line 10 as a boundary. Since a space capable of accommodating the object C is surely formed between the deformed portion 11 and the object C, the object C can be reliably accommodated regardless of its shape and size, and the object C can be accommodated. Since the object C can be sandwiched between the upper pad 4U and the lower pad 4D, it is possible to obtain a sufficient cushioning effect in the packed state.

Next, a method of packing the contained object C using the cushioning material 1 described above will be described.
When packing the contained object C inside the corrugated cardboard box 2 using the cushioning material 1 described above, first, a corrugated cardboard box sheet 3 (in an empty state) containing no contained object C inside is prepared. The bottom of the corrugated cardboard box sheet 3 has already been assembled, and only the lid has not been assembled (the box making has been completed with the lid assembled). An opening that opens upward is formed at the upper end of the corrugated cardboard box sheet 3 that has been almost completed in this way.

In FIGS. 7 to 9 used in the following description, the front side wall and the left side wall of the corrugated cardboard box 2 (outer box) are shown in an unfolded state, but this is just for the sake of simplicity. Actually, the corrugated cardboard box 2 (outer box) has a cubic or rectangular parallelepiped shape, and the side wall is in an upright state.
As shown in FIG. 7, when the contained object C is packed in the corrugated cardboard box sheet 3 which has been almost completed as described above, the pad 4 is first inserted inside the corrugated cardboard box sheet 3. At this time, the pad 4 is inserted so that the folded piece 7 of the pad 4 to be inserted faces downward. In the pad 4 housed in this way, the folded piece 7 is folded downward along the inner surface of the corrugated cardboard box 2 and does not move horizontally in the box. The pad 4 first housed in the box in this way becomes the lower pad 4D.

Next, the contained object C is placed on the central side of the housed lower pad 4D, in other words, on the deformed portion 11 of the lower pad 4D. At this time, the contained object C is placed so that the contained object C is surely inserted between the two folding lines 10 formed on the surface of the lower pad 4D. After the contained object C is placed in this way, the pad 4 (second pad 4) is inserted from above the placed contained object C in a direction that is upside down with the lower pad 4D. In the second pad 4 housed in this way, the folded piece 7 is folded upward along the inner side surface of the cardboard box 2 and does not move horizontally in the box. The pad 4 housed in the box second in this way becomes the upper pad 4U.

As shown in FIG. 8, when the upper pad 4U and the lower pad 4D are inserted, the upper end of the upper pad 4U is the corrugated cardboard box sheet 3 by the thickness of the object C (dimensions along the vertical direction). It protrudes upward from the upper end.
Therefore, the rigid portion 9 of the upper pad 4U is pushed down from above to downward until the rigid portion 9 of the upper pad 4U is abutted against the rigid portion 9 of the lower pad 4D. At this time, the rigid portions 9 of the upper and lower pads 4 are separated in the vertical direction, and there is a margin sufficient to reduce the distance between the two members in the vertical direction. However, there is no gap in the vertical direction on the central side where the object C is placed, and there is not enough room to close the distance between the two members in the vertical direction.

Therefore, when the upper pad 4U is pushed down until the rigid portion 9 of the upper pad 4U is abutted against the rigid portion 9 of the lower pad 4D, the deformed portion 11 located on the center side of the pad body 6 is moved along the vertical direction. A force that deforms the deformed portion 11 is generated. This force is applied upward with respect to the deformed portion 11 of the upper pad 4U and downward with respect to the deformed portion 11 of the lower pad 4D.
When a force acts on the deformed portion 11 in this way, the deformed portion 11 is deformed downward at the folding line and the deformation auxiliary line 13 in the lower pad 4D, and the folding line and the deformation auxiliary line 13 in the upper pad 4U. The deformed portion 11 is deformed upward with the boundary of the above. That is, in the case of a cross section along the front-rear direction, in the lower pad 4D, the central side of the pad body 6 faces downward with the two deformation auxiliary lines 13 of the first auxiliary line 13a and the second auxiliary line 13b as boundaries. As it bends, it bends upward at the turning line. Further, in the case of a cross section along the left-right direction, in the lower pad 4D, the central side of the pad body 6 bends downward with the second auxiliary line 13b as a boundary. In this way, the deformed portion 11 is deformed downward into a hemispherical shape (concave shape).

Then, in the upper pad 4U, a force acts downward on the contrary to the lower pad 4D, so that the directions of deformation and folding are also opposite. As a result, the deformed portion 11 is deformed upward into a gentle dome shape.
In this way, the object C can be accommodated in the space formed between the deformed portions 11.

It should be noted that the embodiments disclosed this time are exemplary in all respects and are not considered to be restrictive. In particular, in the embodiments disclosed this time, matters not explicitly disclosed, such as operating conditions, operating conditions, various parameters, dimensions, weight, volume of components, etc., deviate from the scope normally implemented by those skilled in the art. A value that can be easily assumed by a person skilled in the art is adopted.

For example, in the above-described embodiment, the number of objects to be contained C is one, but a larger number may be accommodated. For example, when accommodating two objects C, the two objects C may be overlapped and sandwiched between the lower pad 4D and the upper pad 4U. Further, a bag body capable of storing the object C is formed on the center side of the pad body 6 of the lower pad 4D, and a bag capable of storing the object C can be stored on the center side of the pad body 6 of the upper pad 4U. By forming a body and storing the contained object C in each bag body, the two contained objects C may be accommodated.

1 Cushioning material 2 Cardboard box 3 Cardboard box sheet 4 Pad 4D Lower pad 4U Upper pad 6 Pad body 6C Pad body pad center side 6S Pad body corner 7 Folded piece 8 Cut line 9 Rigid part 10 Fold line 11 Deformation part 12 Rib of core 13 Deformation auxiliary line 13a Deformation auxiliary line 1st auxiliary line 13b Deformation auxiliary line 2nd auxiliary line C Contents

Claims (3)

It is a cushioning material that cushions the impact applied to the contained object by being deployed between the contained object and the cardboard box when the contained object is accommodated inside the cardboard box.
The cushioning material is provided with a pad that is housed inside the cardboard box and holds the contained object from below or above.
The pad is a pad body formed in a rectangular plate shape along the horizontal direction, and a folded piece that is foldably connected to each of the four sides of the pad body and extends downward or upward from the four sides of the pad body. And have
Wherein the four corners of the pad body and the rigid portion with suppressed deformation in the Rutotomoni vertically disconnected from the pad center side is formed by score lines,
A folding line extending from one rigid portion toward the other rigid portion while curving toward the center of the pad is formed between the rigid portions adjacent to each other in the pad body.
On the center side of the pad body separated by the folding line, a deformed portion capable of forming a space for accommodating the object to be contained is formed by deforming upward or downward .
A cushioning material characterized in that the deformed portion is supported by a rigid portion. The cushioning material according to claim 1, wherein the folding line is formed so as to extend in a direction intersecting the rib forming direction of the core of the corrugated cardboard sheet constituting the pad body. When packing the contents inside the cardboard box using the cushioning material according to claim 1 or 2.
Inside the cardboard box, the pad is housed so that the folded piece faces downward and the folded piece is along the inner side surface of the cardboard box to form a lower pad.
The contained object is placed on the deformed portion of the contained lower pad, and the contained object is placed on the deformed portion.
A pad that is upside down from the lower pad is accommodated from above the previously placed object so that the folded piece of the pad is along the inner surface of the cardboard box to form an upper pad.
By pressing the upper pad against the lower pad until the rigid portion of the upper pad is abutted against the rigid portion of the lower pad, the deformed portion of the lower pad is deformed downward and the deformed portion of the upper pad is moved upward. A packing method using a cushioning material, which is characterized in that the object to be contained is accommodated in a space formed between both deformed portions by being deformed toward.

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