JP7570671B2 - Blank sheets, pre-packaged boxes and packaging boxes - Google Patents

Description

The present invention relates to blank sheets, pre-formed boxes, and packaging boxes.

Conventionally, packaging boxes with partitions to hold the packaged product in place, and packaging boxes for packaging and display have been developed that allow the product to be displayed as is by removing the top of the packaging box while still containing the product (for example, Patent Documents 1 and 2 below).

The tray described in Patent Document 1 has a rectangular cut that spans from the bottom plate to the side plate, and when the side plate is raised up against the bottom plate, it is engaged at an angle with the side plate to form a partition.

The sheet-like member (1) and box body (100) described in Patent Document 2 adopt a configuration in which a retaining plate portion (6) having a slit (6S) formed at the tip of a bottom plate flap (front bottom plate portion) (24) is hung on a rear plate portion (14) and a product is sandwiched within the slit (6S).
Specifically, the retaining plate portion (6) is provided as a part that fixes an extension piece that extends across the slit at the tip portion of a rectangular plate portion extending from the front bottom plate portion to the rear plate portion (14), and is configured so that the retaining plate portion (6) is hung diagonally on the rear plate portion (14).

JP 2005-187041 A Patent No. 6246568

The conventional tray exemplified in Patent Document 1 is effective when forming a box from a blank sheet in which side panels are connected to each side of a bottom panel that is formed in advance into a rectangular shape, but it cannot be applied to assembled-bottom packaging boxes such as so-called one-touch bottoms. In addition, the conventional tray configuration has a problem in that the formation of the partition piece results in the formation of a hole between the bottom panel and the side panel after the partition piece is raised.

The packaging box exemplified in Patent Document 2 has a retaining plate portion between the slits connected by an extension piece, so if the product gets caught on the retaining plate portion when removing one product and part of the retaining plate portion floats up, the entire retaining plate portion floats up, disrupting the arrangement of all the products.

Therefore, the present invention provides a blank sheet, a pre-box, and a packaging box that can be applied to a packaging box with a combined bottom that uses a bottom plate flap, and that makes it easy to stand up a product and prevents the arrangement of other products from being disturbed when the product is removed.

The pre-made box of the present invention comprises a plurality of bottom plate flaps which form a bottom portion, and side plates which rise up and surround the bottom portion, one of the bottom plate flaps extending from the lower edge of one of the opposing side plates as its base edge toward the lower edge of the other opposing side plate, and one or more protrusions are formed at the tip edge of the bottom plate flap which reach above the lower edge on the inner surface of the other side plate when the bottom portion is stretched, and the bottom plate flap is formed with a slit which extends continuously to the outer peripheral edge of the protrusion and a fold line which extends connected to this slit, and the outer peripheral edge, the slit and the fold line surround the protrusion and a portion of the tip of the bottom plate flap to form a partition piece, and when the bottom plate flap is stretched between the opposing side plates, the protrusion interferes with the other side plate, and the partition piece is formed so as to be able to rise up.
According to this configuration, the partition pieces can be easily set, and since the partition pieces are independent of each other, when one partition piece floats, it is unlikely to affect the other partition pieces.

The slits may extend from both ends of the outer peripheral edge of the protruding portion of the pre-made box of the present invention at intervals, and a fold line that forms the base edge of the partition piece may be formed between the slits.
According to this configuration, the partition piece can be prevented from moving parallel to the lower edge of the other side plate, and the partition piece can be fixed more stably.

The slit, which forms the upper edge of the partition piece of the pre-made box of the present invention, extends from one end of the outer peripheral edge, and the fold line, which forms the base edge of the partition piece, is formed on a straight line extending from the other end of the outer peripheral edge in a direction diagonal or perpendicular to the lower edge of the other side panel, and the slit may be bent and extend toward the fold line.
With this configuration, the folding line which becomes the base edge of the partition piece is formed on a straight line extending diagonally or perpendicularly to the lower edge of the other side panel, so that the flat surface of the partition piece can be raised to set the partition piece.

A front side panel that faces the packaging box to the front during carton making may be provided so as to rise from one side of the bottom portion extending in a direction intersecting the lower edge of the one side panel and the lower edge of the other side panel of the pre-carton making box of the present invention, and the fold line may be formed so as to form an obtuse angle toward the front side panel at the bottom panel flap.
With this configuration, the flat, rising partition piece can be easily tilted toward the front side panel.

A front side panel that faces the packaging box to the front during carton production may be provided so as to be able to rise from one side of the bottom portion extending in a direction intersecting the lower edge of the one side panel and the lower edge of the other side panel of the pre-carton box of the present invention, and a rear side panel arranged opposite the front side panel may be provided so as to be able to rise from the bottom panel, and fold lines that fold the rear side panel between the one side panel and the other side panel during carton production may be formed on the one side panel, the other side panel, and the rear side panel.
This configuration allows the product to be supported more stably.

The pre-made box of the present invention comprises a plurality of bottom plate flaps that form a bottom portion, and side plates that surround the bottom portion and rise up, one of the bottom plate flaps extends from the lower edge of one of the opposing side plates that face each other when the box is made, toward the lower edge of the other opposing side plate, and has a side edge that extends along the lower edge of the side plate adjacent to one of the side plate portions when the box is made, and one or more protrusions are formed on the side edge that contact the inner surface of the adjacent side plate above the lower edge when the bottom portion is stretched, and the bottom plate flap is formed with a slit that extends continuously to the outer peripheral edge of the protrusion and a fold line that extends connected to this slit, and the outer peripheral edge, the slit and the fold line surround the protrusion and a portion of the tip of the bottom plate flap to form a partition piece, and when the bottom plate flap is stretched between the opposing side plates, the protrusion interferes with the adjacent side plate, and the partition piece is formed so as to be able to rise up.
According to this configuration, the partition pieces can be easily set, and since the partition pieces are independent of each other, when one partition piece floats, it is unlikely to affect the other partition pieces.

The slits may extend from both ends of the outer peripheral edge of the protruding portion of the pre-made box of the present invention at intervals, and a fold line that forms the base edge of the partition piece may be formed between the slits.
According to this configuration, the partition piece can be prevented from moving parallel to the lower edge of the other side plate, and the partition piece can be fixed more stably.

The slit, which becomes the upper edge of the partition piece of the pre-manufactured box of the present invention, extends from one end of the outer peripheral edge, and the fold line, which becomes the base edge of the partition piece during box making, is formed from the other end of the outer peripheral edge on a straight line extending diagonally or perpendicularly to the lower edge of the adjacent side panel, and the slit may be bent and extend toward the fold line.
With this configuration, the folding line which becomes the base edge of the partition piece is formed on a straight line extending diagonally or perpendicularly to the lower edge of the other side panel, so that the flat surface of the partition piece can be raised to set the partition piece.

The lower edge of one of the side panels of the pre-boxmaking box of the present invention or the lower edge of the opposite side panel may be provided as a front side panel that faces the packaging box to the front during boxmaking, and the fold line may be formed so as to form an obtuse angle toward the front side panel at the bottom panel flap.
With this configuration, the flat, rising partition piece can be easily tilted toward the front side panel.

The blank sheet of the present invention forms any one of the pre-formed boxes described above.
According to this configuration, any one of the actions and functions described above is achieved.

The packaging box of the present invention is formed from any one of the pre-formed boxes described above.
According to this configuration, any one of the actions and functions described above is achieved.

The pre-formed box, blank sheet, and packaging box of the present invention can be applied to assembled-bottom packaging boxes that use bottom plate flaps, and have the effect of making it easier to hold products and preventing the arrangement of other products from being disturbed when a product is removed.

1 is an exploded perspective view of a packaging box according to a first embodiment of the present invention; FIG. 2 is a plan view showing a blank sheet of a part of a pre-formed box according to the first embodiment of the present invention. 3 is an enlarged plan view showing a portion of the blank sheet in FIG. 2 having a partition piece. FIG. FIG. 2 is a plan view showing a blank sheet of a part of a pre-formed box according to the first embodiment of the present invention. 1A to 1C are diagrams illustrating a method for producing a pre-carton box according to a first embodiment of the present invention. 1A to 1C are diagrams illustrating a method for producing a pre-carton box according to a first embodiment of the present invention. FIG. 2 is a plan view showing a pre-formed box according to the first embodiment of the present invention. 1 is a perspective view showing a method of using the packaging box according to the first embodiment of the present invention; FIG. 13 is an enlarged plan view showing a portion of a blank sheet having partition pieces according to a second embodiment of the present invention. FIG. FIG. 11 is a perspective view showing a portion of a packaging box according to a second embodiment of the present invention. 13 is an enlarged plan view showing a portion having partition pieces of another example of a blank sheet according to the second embodiment of the present invention. FIG. 13 is an enlarged plan view showing a portion having partition pieces of another example of a blank sheet according to the second embodiment of the present invention. FIG. FIG. 11 is a plan view of a blank sheet of a part of a pre-formed box according to a third embodiment of the present invention, as viewed from the outer surface. FIG. 13 is a plan view of another example of a blank sheet of a part of a pre-formed box according to a third embodiment of the present invention, as viewed from the outer surface.

Below, a first embodiment of the blank sheet, pre-boxmaking box, and packaging box of the present invention will be described with reference to the drawings. Note that the dimensions of each part in the drawings used in the following description are not necessarily the same as the actual ones, and can be changed as appropriate. In this embodiment, each part may be referred to as upper, lower, horizontal, side, etc., but unless otherwise specified, these refer to the relative positional relationship of each part when the blank sheet or packaging box is viewed from a specific direction shown in the specification or drawings with the bottom part as the lower surface. Therefore, these do not necessarily determine the orientation of the packaging box. In addition, front and front refer to the orientation when the front side panel of the pre-boxmaking box and packaging box of the present invention is the front, and rear and rear refer to the orientation when the rear side panel is the rear.

As shown in FIG. 1, the packaging box 1 of the first embodiment of the present invention includes a tray member 2 for storing items inside and a lid member 3 for closing the tray member 2.

The tray member 2 has lower side plates 4-7 surrounding the tray member 2 on all four sides, and a bottom portion 8 that closes the bottom of the lower side plates 4-7. The bottom portion 8 is formed by assembling bottom plate flaps 11-14 shown in Fig. 2. More specifically, the tray member 2 in this embodiment has a so-called one-touch bottom structure.
The cover member 3 includes an upper side plate 16-19 that covers the lower side plate 4-7 from the outside, and a top plate flap 21-24 that closes the upper end opening of the upper side plate 16-19. The lower end side of the upper side plate 16-19 is open.

As shown in FIG. 2, the blank sheet 2a of the tray member 2 mainly comprises a lower side plate 4-7 and first to fourth bottom plate flaps 11-14 connected to the respective lower edges 4c-7c of the lower side plate 4-7.
The blank sheet 2a is formed by punching out a sheet of rigid paper or synthetic resin and forming slits and breaking lines therein.

The four lower side plates 4-7 are connected in one direction via sides b1 which are bending lines formed between the lower side plates 4, 5, 6, and 7.
In this embodiment, the lower side panel 4 is surrounded by approximately horizontal upper and lower edges 4a and 4c, a side edge 4b that forms the boundary with the rear side panel 7, an inclined edge 4e extending from the upper edge 4a toward the front side panel 5, and a side edge b1 that forms the boundary with the front side panel 5.

The lower side panel 4 has an inclined fold line L1 that extends from the upper edge 4a toward the side edge 4b. The inclined fold line L1 extends toward the rear side panel 7 that is adjacent to the lower side panel 4 during box making.

Near the center of the lower side panel 4, a rectangular push-in hole 30 and a cut-out portion 31 for opening adjacent to and below the push-in hole 30 are formed.
The cutout portion 31 is formed in a generally barrel shape with the upper side 31a and the lower side 31c formed generally horizontally and both side sides 31b, 31b bulging out on both sides near the center in the vertical direction. The upper side 31a of the cutout portion 31 forms the lower edge of the opening of the push-in hole 30, and both side sides 31b, 31b are formed with perforated break lines that make it easy to cut out, and the lower side 31c is formed with a seamless linear slit.

The lower side plate 6, which faces the lower side plate 4 during box manufacturing, is formed symmetrically with the front side plate 5 in between.

A joint margin 32 is provided on one side edge 4b or side edge b1 of the lower side plates 4, 7 located at both ends in the connecting direction of the lower side plates 4-7 to connect the lower side plates 4, 7 located at both ends to form the cylindrical body shown in Fig. 1. In this embodiment, the joint margin 32 is a narrow trapezoid and is formed on the side edge 4b side.
The joint margin 32 has folding lines formed at positions corresponding to folding lines L3 and L4, which will be described later, so that folding can be easily performed at the position where the folding lines L3 and L4 overlap when the rear side panels 7 are overlapped.

The lower side plates 4, 7 are connected by means of joints 32 so that the four lower side plates 4-7 shown in FIG. 1 form a cylinder that encloses a rectangular space.
The front side panel 5, which is provided across the shorter sides b1, b1 of the lower side panels 4, 6, is rectangular and shorter in height than the lower side panels 4, 6, and is wider in the horizontal direction. The height of the front side panel 5 can be set appropriately depending on how much of the merchandise inside is desired to be exposed during display.

The rear side plate 7 provided on the long side b1 of the lower side plate 6 is formed in a rectangular shape with the same width as the front side plate 5 and the same height as the lower side plates 4 and 6.
The rear side panel 7 has folding lines L2-L4 formed thereon, which surround the upper side of the rear side panel 7 in a trapezoidal shape.

The folding lines L2-L4 are made up of sides L2 and L3 that extend symmetrically from two points that are approximately the same distance away from the center of the upper edge of the rear side panel 7 toward the sides b1 and b1, and a side L4 that extends approximately horizontally, connecting the points where sides L2 and L3 intersect with side b1. The lower ends of sides L2 and L3 intersect with the lower end of the sloping folding line L1 of the lower side panels 4 and 6. The folding lines L1-L4 are formed in a perforated pattern.

The first to fourth bottom plate flaps 11 to 14 that form the bottom surface portion 8 shown in FIG. 1 are connected to the lower edge 4c-7c of each lower side plate 4-7.

The first bottom plate flap 11 connected to the lower edge 4c of the lower side plate 4 is formed to be approximately trapezoidal in size so as to cover the bottom surface portion 8 shown in FIG. 1 surrounded by the lower edges 4c-7c of the lower side plate 4-7 with only a small gap. That is, the tip edge 11a of the first bottom plate flap 11 is preferably formed to a length of 70% or more (about 85% in this embodiment) of the length of the lower edge 4c of the lower side plate 4 in a direction parallel to the lower edge 4c, although this is not particularly limited. In addition, the tip edge 11a of the first bottom plate flap 11 is formed so that when the bottom surface portion 8 is stretched, it extends to a position just short of the lower edge 6c in a direction perpendicular to the lower edge 4c. The tip edge 11a is formed to be approximately parallel to the lower edge 4c.

A partition piece 35 is formed at the tip of the first bottom plate flap 11 so as to protrude from the tip edge 11a.
As shown in Figure 3, the partition piece 35 is formed in the shape of a single plate, and includes a protrusion 36 that partially extends from the tip edge 11a of the first bottom plate flap 11, and a portion surrounded by slits 37, 37 that extend from both ends of the outer peripheral edge 36g of the protrusion 36 toward the lower edge side 4c beyond the tip edge 11a, and a fold line 38 that extends between the slits 37, 37.

The partition piece 35 is generally rectangular in shape. The slit 37 is formed in a direction generally perpendicular to the leading edge 11a. The folding line 38 of the partition piece 35 and the leading edge of the protruding portion 36 are generally parallel to the leading edge 11a of the first bottom plate flap 11.

As shown in FIG. 2, the first bottom plate flap 11 has a fold line 11f formed from the vicinity of the lower edge 4c toward the tip edge 11a, which folds one corner of the tip edge 11a of the first bottom plate flap 11 back toward the outer surface when the box is in its pre-manufactured state.

The second bottom panel flap 12 has a roughly trapezoidal base portion 40 whose lower base is the lower edge 5c of the front side panel 5, and an interlocking joint portion 41 protruding from the base portion 40.

The base portion 40 is bounded by a lower edge 5c, an inclined side 40b that extends gently from one end of the lower edge 5c on the side of the first bottom plate flap 11, a tip edge 40a that extends approximately parallel to the lower edge 5c from the tip of the inclined side 40b, and an inclined side 40d that extends from the tip edge 40a toward the lower edge 5c.

The extension dimension of the base portion 40 from the lower end edge 5 c , i.e., the dimension from the lower end edge 5 c to the tip edge 40 a , is approximately half the extension dimension of the first bottom plate flap 11 .
The interlocking joint 41 is connected to the inclined side 40b.
The interlocking joint 41 is configured to join with the first bottom plate flap 11 and interlock therewith.

The third bottom plate flap 13 has a roughly trapezoidal base portion 40 with the lower end edge 6c as the bottom base, and an interlocking joint portion 41 that protrudes from the inclined edge 40j on the fourth bottom plate flap 14 side of the base portion 40. The interlocking joint portion 41 of the third bottom plate flap 13 is provided to join and interlock with the fourth bottom plate flap 14.

The length of the lower edge 6c and the leading edge 13a is longer than the lower edge 5c and the leading edge 40a of the second base plate flap 12. The extension dimension from the lower edge 6c of the third base plate flap 13 is approximately the same as the second base plate flap 12.

The fourth bottom plate flap 14 is formed in a trapezoid shape with the lower end edge 7c as the lower base. The extension dimension of the fourth bottom plate flap 14 is approximately the same as the second bottom plate flap 12 and the third bottom plate flap 13.

As shown in FIG. 4, the blank sheet 3a of the cover member 3 has an upper side plate 16-19 formed with a slightly higher dimension and a wider dimension than the lower side plate 4-7 shown in FIG. 2, and a substantially rectangular top plate flap 21-24 formed on the upper edge 16a-19a of the upper side plate 16-19.
The upper side plates 16 and 18 correspond to the lower side plates 4 and 6, respectively, and the upper side plates 17 and 19 correspond to the front side plate 5 and the rear side plate 7, respectively.

The upper side plates 16, 18 are formed with push-in pieces 50 corresponding to the push-in holes 30 in the lower side plates 4, 6, and pull-out pieces 51 corresponding to the cut-out portions 31.
The push-in piece 50 is rectangular and slightly smaller than the push-in hole 30, and is formed at a position corresponding to the push-in hole 30 during box making.

The pull-out piece 51 is formed in a similar shape to and slightly larger than the cut-out portion 31. A lower side 51c of the pull-out piece 51 is not a slit but a bending line.
A notch 52 is formed between the upper side plate 16 and the upper side plate 17. The notch 52 is formed with a width and height such that the lower part of the corner between the front side plate 5 and the lower side plate 4 is slightly exposed.

A long hole 53 is formed between the upper side plate 17 and the upper side plate 18. The long hole 53 is formed with a width such that the corner between the front side plate 5 and the lower side plate 6 can be seen, and with a height such that a predetermined dimension is exposed from the upper end of the corner.

A method for folding the blank sheets 2a and 3a having the above-mentioned structure to form the pre-box 1a will be described.
As shown in FIG. 5, the first to fourth bottom flaps 11 to 14 of the blank sheet 2a are folded at their lower edges 4c-7c toward the inner surface of the lower side panel 4-6 (ie, the surface opposite to that shown in FIG. 2).

The interlocking joints 41 of the second and third bottom plate flaps 12 and 13, which are folded at the lower edges 5c and 6c, are further folded at the inclined edges 40b and 40j toward the outer surfaces of the second and third bottom plate flaps 12 and 13, respectively, and adhesive is applied to the surfaces (i.e., the inner surfaces) of each interlocking joint 41.

Then, at the side b1 between the lower side panel 4 and the front side panel 5 and the side b1 between the lower side panel 6 and the rear side panel 7, the lower side panel 4 and the rear side panel 7 are folded toward the depth side of the paper shown in FIG. 5 so as to overlap the inner faces of the front side panel 5 and the lower side panel 6, respectively. At this time, adhesive is applied to the outer surface of the joint margin 32.

As a result, the interlocking joint portion 41 of the second bottom plate flap 12 overlaps and is attached to a part of the first bottom plate flap 11, and the interlocking joint portion 41 of the third bottom plate flap 13 overlaps and is attached to a part of the fourth bottom plate flap 14. The lower side plate 7 also overlaps and is attached to the joint margin 32.

As a result, when the lower side panels 4-6 are raised into a three-dimensional shape, at least a portion of each of the first bottom panel flap 11 to the fourth bottom panel flap 14 overlaps with the adjacent bottom panel flap counterclockwise when viewed from the bottom, thereby firmly closing the bottom portion 8, creating a so-called one-touch bottom.

As a result, the pre-box-making tray member 2 shown in Figure 6 is in a pre-box-making state ready for assembly. The tray member 2 shown in Figure 6 is a diagram showing the blank sheet 2a shown in Figure 5 folded at side edge b1 as described above and turned over. For ease of explanation, the first bottom plate flap 11 to the fourth bottom plate flap 14 are omitted in Figure 6. The blank sheet 3a of the lid member 3 shown in Figure 6 is a diagram showing the blank sheet 3a shown in Figure 4 turned over to show its inner surface.

As shown in Figure 6, before the tray member 2 is made into a box, the upper side plate 18 and the lower side plate 6 are placed on the inner surface of the blank sheet 3a of the lid member 3 so that they are aligned. Adhesive is applied to the outer surface of the cutout portion 31 formed in the lower side plates 4 and 6 or the inner surface of the pull-out piece 51 of the upper side plates 16 and 18.

Then, the blank sheet 3a of the cover member 3 is folded at the side edge b2, and the upper side plate 16 is placed on the lower side plate 4. The upper side plate 19 is placed on the lower side plate 7. The joint margin 54, which has been previously coated with adhesive, is placed on the upper side plate 16 to surround the tray member 2.
As a result of the above, the pre-box-forming tray member 2 and lid member 3 shown in Figure 6 are fixed between the cutout portion 31 and the pull-out piece 51, and the pre-box-forming box 1a is completed in which the lid member 3 surrounds and fixes the tray member 2 as shown in Figure 7.

To manufacture the pre-formed box 1a, the upper side panels 16-19 of the pre-formed box 1a shown in FIG. 7 are raised at right angles on each side edge b2 to create a three-dimensional shape, as shown in FIG. 1 with the tray member 2 and lid member 3 exploded.

When the first bottom flap 11 is made three-dimensional, it rises from the lower edge 4c of the lower side panel 4 and stretches across the lower edge 6c of the lower side panel 6, and the partition piece 35 protruding from the tip edge 11a comes into contact with the inner surface of the lower side panel 6. The partition piece 35 then tries to lower further while pushing against the inner surface of the lower side panel 6 as the first bottom flap 11 rotates around the lower edge 4c as its base edge.

When the partition piece 35 can no longer move down, it is firmly attached to the lower side panel 6. Then, as shown in FIG. 1, when the first bottom panel flap 11 rotates further, the fold line 38 becomes a valley fold, and when the first bottom panel flap 11 and the other bottom panel flaps 12-14 form the bottom surface portion 8, they are fixed to the lower side panel 6 in an inclined state.

In this manner, the partition piece 35 is automatically formed inside the tray member 2 by the operation of stretching the first bottom plate flap 11 during the three-dimensional construction.
Before being made into a box, the tray member 2 has a bottom portion 8 stretched thereon and the lower side plate 4-7 rises up so as to surround the bottom portion 8, thereby forming the tray member 2 with a storage portion S as shown in FIG.

The cover member 3, together with the tray member 2, is formed in a rectangular shape in plan view, with an open upper end and an upper side plate 16-19 completely covering the lower side plate 4-7.
The item to be packed is placed between the upper opening and the partition pieces 35. The item to be packed is supported by the partition pieces 35, so it is stably held even in an upright position. Once the item to be packed is placed inside, the top panel flaps 21-24 are folded at approximately 90° to each side panel to close the upper opening.

In this manner, a packaging box 1 is formed containing the product or other packaged items.

To open the packaging box 1, a push-in piece 50 (not shown in FIG. 1; see FIG. 2) formed on the upper side panels 16, 18 is pushed into the push-in hole 30 to form a hole into which a finger or the like can be inserted, and the finger is inserted through the hole and the pull-out piece 51 (not shown in FIG. 1; see FIG. 2) is broken along the perforation while being folded back outward. At the same time, the perforation of the cut-out portion 31 is broken, the cut-out portion 31 is separated from the lower side panel, and the fixation between the lid member 3 and the tray member 2 is released. The lid member 3 is then removed from the tray member 2.

The tray member 2 from which the cover member 3 has been removed can be displayed as is, with the products generally maintaining the same orientation as when they were placed on the tray member 2.
Since the packing box 1 is provided with the partition piece 35, even if the products are taken out one by one from the front side panel 5, the remaining products are supported by the partition piece 35 and can be easily maintained in a good upright position.

When a product is removed and moved to the front side panel 5, the rear side panel 7 is folded along the fold line L2-L4 and pushed inward as shown in Fig. 8. This causes the inclined fold line L1 of the lower side panels 4 and 6 to be folded as well, forming a support portion 60 between the rear side panel 7 and a part of the lower side panels 4 and 6 that supports the product from behind.
The support portion 60 makes it possible to maintain the upright position of the products inside the tray member 2 even easier and more stable.

As described above, the blank sheet 2a of the present invention has the effect of making it very easy to form the partition piece 35 simply by forming the partition piece 35 at the tip of the first bottom plate flap 11.

The tray member 2 has partition pieces 35 that are not connected to each other, but are fixed independently to the lower side panel 6. Therefore, even if a partition piece 35 is lifted off the lower side panel 6 when removing a product placed between the partition pieces 35, the blank sheet 2a has the effect of preventing other partition pieces 35 from lifting off and disrupting the display of other products.

The blank sheet 2a, pre-formed box 1a, and packaging box 1 have a very simple structure, and have the effect of creating reliable partitions. The partition 35 also prevents horizontal movement and can stably support the product.

Next, a second embodiment of the present invention will be described. In this embodiment, the same components as those in the first embodiment will be denoted by the same reference numerals and their description will be omitted, and the components different from the first embodiment will be mainly described.

As shown in FIG. 9, the first bottom plate flap 11 of this embodiment differs from the first embodiment in that the folding line 48 of the partition piece 45, i.e., the base edge, is provided at an angle to the tip edge 11a, in that the folding line 38 of the partition piece 35 is provided parallel to the tip edge 11a. Also, the partition piece 45 of this embodiment is provided with its flat surface upright, which differs from the first embodiment in that the partition piece 45 is provided with its flat surface laid down.

Specifically, the partition piece 45 of the second embodiment has a slit 47 formed from one end on the rear side of the outer circumferential edge 46g of the protruding portion 46, and a bending line 48 formed from an end on the front side of the outer circumferential edge 46g of the protruding portion 46. The slit 47 and the bending line 48 extend obliquely and parallel to each other toward the side edge 4b to which the rear side panel 7 is connected. In other words, the bending line 48 is provided so as to form an obtuse angle on the front side panel 5 side with respect to the lower end edge 6c.
After extending a predetermined distance, the slit 47 bends toward the end of the bending line 48 and reaches the bending line 48 .

The partition piece 45 is formed into a generally parallelogram shape. The shape of the partition piece 45 is formed so that when the protrusion 46 hits the inner surface of the lower side plate 6 and the partition piece 45 stands up, one side of the protrusion 46 hits firmly against the inner surface of the lower side plate 6.

The pre-formed box 1a and packaging box 1 of this embodiment having the above-mentioned partition pieces 45 are configured to stand the partition pieces 45 with the flat surfaces upright as shown in FIG. 10, so the spacing between products can be kept to the thickness of the blank sheet 2a. Therefore, the pre-formed box 1a and packaging box 1 of this embodiment avoids having to provide a spacing equal to the width of the flat surfaces of the partition pieces 45 for each product placement space. In other words, the pre-formed box 1a and packaging box 1 have the effect of being able to store products more efficiently. The pre-formed box 1a and packaging box 1 of this embodiment also have the action and effect of the first embodiment.

The pre-box-making box 1a and the packaging box 1 can also have the partition piece 45 tilted diagonally forward. Therefore, when the product on the front side panel 5 side of the pre-box-making box 1a and the packaging box 1 is removed and a space is created, the product on the rear side panel 7 side can be moved forward while the partition piece 45 is tilted slightly forward. This has the effect that the pre-box-making box 1a and the packaging box 1 make it easy to handle the products inside the tray member 2.

Next, a third embodiment of the present invention will be described with reference to FIG. 13. In this embodiment, the same components as those in the first or second embodiment are denoted by the same reference numerals, and their description will be omitted. The following mainly describes the components that are different from the first and second embodiments.

Specifically, in this embodiment, as shown in Fig. 13, the partition piece 65 of the blank sheet 2c is formed on the side edge 11b of the first bottom flap 11, which is different from the first or second embodiment in that the partition piece 65 is formed on the tip edge 11a of the first bottom flap 11. Also, the partition piece 65 is formed in a substantially fan shape.
The blank sheet 2c having such a configuration achieves the same effects, functions and advantages as the pre-formed box of the second embodiment.

The partition piece 65 may be provided on any bottom flap so long as one side edge (side edge 11b in the above example) of the bottom flap is positioned approximately along the lower edge (lower edge 7c in the above example) of the side plate (side plate 7 in the above example) adjacent to the side plate (side plate 4 in the above example) to which the bottom flap is connected during box making, as in the pre-box making box formed by the blank sheet 2c shown in Figure 13, and the protrusion (protrusion 66 in the above example) abuts the adjacent side plate (side plate 7 in the above example) to cause the partition piece 65 to stand up.

Specifically, for example, the partition piece 65 may be provided on the side edge 76b of the bottom plate flap 76 of the bottom plate flaps 74 to 77 that form another type of one-touch bottom, as shown in FIG. 14. Even in this case, as with the blank sheet 2c of the third embodiment, the side edge 76b is provided substantially along the lower edge 5c of the side plate 5 adjacent to the side plate 6 to which the bottom plate flap 7 is connected, and the partition piece 65 has a protrusion 66 that can contact the inner surface of the side plate 5. Therefore, even with the blank sheet 2d shown in FIG. 14 and the pre-box made from it, the partition piece 65 comes into contact with the inner surface of the side plate 5 and rises up during box making, and the same effect as the third embodiment can be achieved.

14, when the side plate 6 connecting the bottom plate flap 76 on which the partition piece 65 is formed faces the front, the folding line 67 serving as the base end edge of the partition piece 65 may form an obtuse angle on the side plate 6 serving as the front plate. According to this configuration, when the side plate 6 of the packaging box formed from the blank sheet 2d is used facing the front, the partition piece 65 is likely to fall forward when removing the stored item, which is an effect that makes removal easy. The action and effect of this configuration are particularly noticeable when the side plate 6 is provided with a break line or the like and is used by removing a part from the upper end.
The same can be said about the partition pieces 35, 45, and 55 of the first and second embodiments.

In the first to third embodiments, the blank sheet 2a, the pre-box 1a, and the packaging box 1 are provided with a large number of partition pieces 35, 45, 55, and 65. However, the number of partition pieces 35, 45, and 65 may be one or more depending on the products to be stored.

The height of the partition pieces 45, 65 may be set by appropriately setting the width of the partition pieces 45, 65. In addition, the dimensions of the slit 47 and the folding line 48 of the partition piece 45 may be appropriately set to increase the extension dimension of the partition pieces 45, 65 in the direction of the lower edge 4c.

Also, as shown in Fig. 9, in the blank sheet, pre-formed box, and packaging box of the second embodiment, the fold line 48 may be formed in a part of the base edge of the partition piece 45, as long as it is within the range of the base edge, and the remaining part may be a slit 47. Specifically, as shown in Fig. 11, the slit 47 may extend around to a part of the base edge of the partition piece 45. Or, as shown in Fig. 12, both ends of the base edge of the partition piece 55 may be formed by slits 57, and the rest may be a fold line 58.

As shown in FIG. 12, the slit that forms the upper edge of the partition piece 55 when it is raised may have an extended portion 61 by providing it with projections and recesses.
By providing the extension 61 on the partition piece 55 in this manner, it is possible to partially increase the height of the partition piece 55, thereby making it possible to hold products more stably.

In the first to third embodiments, the pre-boxmaking boxes 1a to 1c and the packaging box 1 are shown as examples in which the lid member 3 is placed over the tray member 2 and removably fixed, but the lid member 3 is not essential. That is, the present invention can be applied to any packaging box as long as any of the above-mentioned partition pieces 35, 45, and 65 is formed at the tip of the bottom plate flap. For example, the present invention can be applied to packaging boxes whose upper part can be removed by breaking, as in the invention disclosed in JP 2020-1770. The pre-boxmaking boxes and packaging boxes of the present invention may also be composed of only the tray member 2. Alternatively, the blank sheet, pre-boxmaking boxes, and packaging boxes of the present invention can be applied to packaging boxes whose upper part is not removable, having top plate flaps 81 to 83 and one top plate flap 81 constituting a lid member, as shown in FIG. 14.

Furthermore, the present invention can also be applied to packaging boxes having a bottom surface portion 8 other than a one-touch bottom, so long as any of the above-mentioned partition pieces 35, 45, 55, 65 is formed at the tip or side edge of the bottom plate flap, and the bottom plate flap is stretched between opposing side plates.

In addition, if the partition pieces 45, 55, 65 of the second and third embodiments or their modified examples shown in Figures 9 to 14 have protruding portions 46, 56, 66 for rising up in contact with the (lower) side panel 6, etc., the folding lines 48, 58 may be formed in a direction perpendicular to the lower edge 6c, etc. Alternatively, if the partition pieces 45, 55, 65 have protruding portions 46, 56, 66 for rising up in contact with the lower side panel 6, etc., the folding lines 48, 58 may be formed so as to form an obtuse angle toward the rear side panel with respect to the lower edge 6c, etc.

In addition, the pre-formed box 1a or packaging box 1 of the present invention may have any of the lower side panels 4-7 facing forward.

In other words, as long as the partition pieces 35, 45, etc. are formed as described above by the lower side plate erected from the bottom surface portion 8, the pre-box 1a or packaging box 1 may be formed so that any of the lower side plates 4, 6, 7 shown in FIG. 10 faces the front by appropriately setting the height. In this case, the push-in hole 30, cut-out portion 31, push-in piece 50, and pull-out piece 51 may be provided in the lower side plate 4-7 at an appropriate size or position in order to apply the same lid member 3 as in the first and second embodiments.

When the lower side panel 6 (the other side panel) that raises the partition pieces 35, 45, etc., or the lower side panel 4 (one side panel) that connects the bottom panel flap having the partition pieces 35, 45, etc., is faced forward, the packaged item can be pulled out and removed. In other words, the pre-box 2a or packaging box 1 with such a structure has the effect of making it easy to remove the packaged item, such as a product.

In addition, for the manufacturing method of the pre-box manufacturing box of the first and second embodiments of the present invention, as long as the pre-box manufacturing tray member 2 and the lid member 3 can be fixed with the cutout portion 31 and the pull-out portion 51, a manufacturing method other than the above-mentioned procedure may be used.

1 Packaging box 1a Box before box making 2a Blank sheet 3a Blank sheet 4 Lower side plate (side plate)
5 Front side panel (side panel)
6 Lower side panel (side panel)
7 Rear side panel (side panel)
8 Bottom surface portion 11 First bottom plate flap 12 Second bottom plate flap 13 Third bottom plate flap 14 Fourth bottom plate flap 35, 45, 55 Partition piece 36 Protruding portion 36g, 46g Outer periphery 37, 47, 57 Slit 38, 48, 58 Bending line

Claims (11)

The container has a plurality of bottom plate flaps that form a bottom surface portion, and side plates that stand up and surround the bottom surface portion,
one of the bottom panel flaps extends from a lower end edge of one of the side panels facing each other during box making toward a lower end edge of the other opposing side panel,
The tip edge of the bottom plate flap is partially extended from the tip edge, and when the bottom surface portion is stretched, two or more protruding portions are formed so as to contact the inner surface of the other side plate above the lower end edge and brace it,
The bottom plate flap is formed with a slit extending continuously to the outer periphery of the protruding portion and a folding line extending to the slit,
The outer peripheral edge, the slit and the folding line surround the protrusion and a part of the tip of the bottom plate flap to form a partition piece,
The pre-formed box is formed so that when the bottom flap is stretched between the opposing side panels, the protrusion interferes with the other side panel, and the partition piece can rise up. The slits extend from both ends of the outer periphery of the protrusion at intervals from each other,
2. The box according to claim 1, wherein a folding line that serves as a base end edge of the partition piece is formed between the adjacent slits. The slit, which is the upper edge of the partition piece, extends from one end of the outer periphery,
The folding line, which is the base end edge of the partition piece, is formed on a straight line extending from the other end of the outer circumferential edge in a direction diagonal or perpendicular to the lower end edge of the other side plate,
The pre-formed box according to claim 1 , wherein the slit is bent and extends toward the fold line. A front side panel is provided so as to be able to rise from one side of the bottom surface portion extending in a direction intersecting the lower end edge of the one side panel and the lower end edge of the other side panel, and the front side panel is provided so as to face the packaging box to the front during box making;
4. The box according to claim 3, wherein the folding line is formed on the bottom flap so as to form an obtuse angle toward the front side panel. A front side plate that faces the packaging box to the front during box making is provided so as to be able to rise from one side of the bottom portion that extends in a direction intersecting a lower end edge of the one side plate and a lower end edge of the other side plate, and a rear side plate that is disposed opposite the front side plate is provided so as to be able to rise from the bottom portion,
5. A pre-formed box according to claim 1, wherein a fold line is formed on the one side panel, the other side panel, and the rear side panel along which the rear side panel is folded between the one side panel and the other side panel during box-forming. The container has a plurality of bottom plate flaps that form a bottom surface portion, and side plates that stand up and surround the bottom surface portion,
one of the bottom panel flaps has a base edge that corresponds to a lower edge of one of the side panels that face each other when the box is made, and extends toward a lower edge of the other side panel that faces the other side panel, and has a side edge that extends along the lower edge of a side panel that is adjacent to the one side panel when the box is made,
The side edge is formed with two or more protruding portions that partially extend from the side edge and can contact the inner surface of the adjacent side plate above the lower edge when the bottom surface portion is stretched,
The bottom plate flap is formed with a slit extending continuously to the outer periphery of the protruding portion and a folding line extending to the slit,
The outer peripheral edge, the slit and the folding line surround the protrusion and a part of the tip of the bottom plate flap to form a partition piece,
The pre-formed box is formed so that when the bottom panel flap is stretched between the opposing side panels, the protrusion interferes with the adjacent side panels, and the partition piece can stand up. The slits extend from both ends of the outer periphery of the protrusion at intervals from each other,
7. The box according to claim 6, wherein a folding line that serves as a base end edge of the partition piece is formed between the adjacent slits. The slit, which is the upper edge of the partition piece, extends from one end of the outer periphery,
The folding line, which becomes the base edge of the partition piece, is formed on a straight line extending from the other end of the outer circumferential edge in a direction diagonal or perpendicular to the lower edge of the adjacent side plate,
The pre-formed box according to claim 6, wherein the slit is bent and extends toward the fold line. A front side plate is provided so as to be able to rise from the lower end edge of one of the side plates or the lower end edge of the side plate opposite thereto, so that the packaging box faces the front during box making;
9. The box according to claim 7, wherein the folding line is formed on the bottom flap so as to form an obtuse angle toward the front side panel. A blank sheet for forming a pre-formed box according to any one of claims 1 to 9. A packaging box formed from the pre-formed box according to claim 10.

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