JP2009154890A - Paper box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper box formed of a sheet of paper board and capable of enhancing the strength of a bottom side with a relatively simple constitution, and solving the problem that a bottom is opened, and a content in the paper box is dropped out. <P>SOLUTION: The paper box formed of a rectangular paper board when deployed in plan, and includes a pair of front and rear end plates 10 and 20 opposite to each other, a pair of right and left side plates 30, 40 opposite to each other with their side edges being connected to the front and back end plates 10 and 20, a lid plate 50 connected to the front end plate 20 at its upper edge, a back end plate 10, a margin 11 for sticking the back end plate 10 and the right side plate 40, a back bottom plate flap 60 connected to a lower edge of the back end plate 10, and a front bottom plate 70 connected to a lower edge of the front end plate 20. When the paper board is raised from the state of a flat paper board for forming a three-dimensional box shape, the back bottom plate flap 60 is inserted in a groove hole 71 formed in the front bottom plate 70 from its front end to constitute a bottom surface, and the box shape is formed thereby. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a paper box, and more particularly to a paper box excellent in strength at the bottom.

Conventionally, there are various types of paper boxes constructed by cutting out from a single sheet of paper and pasting them together in three dimensions.
FIG. 5 shows a developed view of a typical example. In this figure, the paper box 200 includes a rear end plate 110, an adhesive margin 111, a front end plate 120, a left side plate 130, a left lid support flap 131, a left bottom support flap 132, a right side plate 140, a right lid support flap 141, and a right bottom. The support flap 142, the cover plate 150, the rear bottom plate flap 160, and the front bottom plate flap 170 are configured.
A pair of rear bottom plate flaps 160 and front bottom plate flaps 170 are connected to the lower edges of the end plates 110 and 120, respectively. The rear bottom plate flap 160 and the front bottom plate flap 170 are formed with a locking projection 161 and a locking groove 171, respectively.

  In order to form a box shape in three dimensions, the rear end plate 110, the front end plate 120, the left side plate 130, and the right side plate 140 are raised at right angles, and the adhesive margin 111 is placed on the back surface of the right side plate 140. At the same time, the left bottom support flap 132 and the right bottom support flap 142 are folded, and the locking protrusion 161 of the rear bottom plate flap 160 is locked to the locking groove 171 of the front bottom plate flap 170. Accordingly, the front and rear bottom plate flaps 160, 170, the left bottom support flap 132, and the right bottom support flap 142 cooperate to form a bottom surface.

However, in this conventional paper box 200, the overlapping area of the bottom surface is not necessarily sufficient, the strength is weak, and if the adhesion is not sufficient, the contents put in the paper box are placed between the rear bottom plate flap 160 and the front bottom plate flap 170. There was a risk of pushing open and getting out of the bottom.
FIG. 6A shows a bottom view after the paper box 200 is assembled. FIG. 6B shows a rear bottom plate flap 160, a front bottom plate flap 170, a left bottom support flap 132, and a right bottom support flap 142 as viewed from the bottom. The overlapping part is indicated by diagonal lines. The area of the shaded area is surprisingly small.
As a method for solving this problem, there has been reported an example in which the bottom of the paper box is prevented from being pushed open and this portion is automatically locked (see Patent Document 1).
JP 2006-315709 A

  As described above, this type of conventional paper box has a problem that the overlapping area of each part on the bottom surface is small and sufficient strength cannot be obtained. The method shown in Patent Document 1 is also effective for the purpose of preventing the removal and tampering of the contents, but there is a problem that the structure is complicated because it is not so effective in terms of reinforcing the bottom surface.

  The present invention solves such a problem, and has a relatively simple configuration, and can improve the strength of the bottom surface and avoid problems such as the opening of the bottom and the contents coming out. The realization of a paper box to be used is an issue.

  In order to solve the above problems, the paper box of the present invention is a rectangular paper board when unfolded in a plane, and a pair of left and right side boards facing each other, and the left and right side boards and side edges connected to each other. A pair of front and rear end plates opposed to each other, any one or more of the left and right side plates and a lid plate connected to the front and rear end plates at an upper edge, and an adhesive margin for bonding one of the left and right side plates and the end plate And a bottom plate connected to one lower edge of each of the front and rear end plates and a bottom plate flap connected to the other lower edge, and forming the three-dimensional box shape from the flat folded state of the paper plate When the left and right side plates and the front and rear end plates are raised in a direction perpendicular to each other, the bottom plate flap is inserted into the slot provided in the bottom plate from the tip to form a box shape It is characterized by doing.

  Here, the tip of the bottom plate flap is inserted from the outside toward the inside of the slot.

  Here, the bottom plate has a side plate reinforcing flap that is in contact with a part of one inner surface of the front and rear end plates and reinforces one of the front and rear end plates.

  Here, the bottom plate has a bottom surface reinforcing flap that covers one surface of the bottom surface from the inside of the box shape and reinforces the bottom surface.

  As described above, according to the paper box of the present invention, the bottom plate flap is inserted into the bottom plate, the area where a plurality of paper plates overlap on the bottom surface is increased, the strength of the bottom surface is increased with a relatively simple configuration, and the weight of the contents Thus, it is possible to provide a paper box composed of a single paper board that can avoid problems such as the bottom being opened and the contents coming off.

  Hereinafter, embodiments of a paper box according to the present invention will be described in detail with reference to the drawings. The following description is for the purpose of understanding the invention more deeply and is not intended to limit the scope of the claims.

  FIG. 1 is a development view of an embodiment of a paper box according to the present invention.

  In FIG. 1, a paper box 100 according to the first embodiment includes a rear end plate 10, a front end plate 20, a left side plate 30, a right side plate 40, a lid plate 50, a rear bottom plate flap 60, a front bottom plate 70, a left lid support flap 31, and a left bottom. The support flap 32, the right lid support flap 41, the right bottom support flap 42, and the adhesive allowance 11 are included.

The rear end plate 10 and the front end plate 20 have the same shape, but the length of the side of the rear end plate 10 (in the left-right direction in FIG. 1) is shortened by the paper thickness of the adhesive margin 11 portion. A glue margin 11 is connected to the left edge of the rear end plate 10. The left side plate 30 and the right side plate 40 have the same shape and the side lengths are equal. Since the lateral lengths of the rear end plate 10 and the front end plate 20 are longer than the end portions of the left side plate 30 and the right side plate 40, the side (width) in plan view is the end (depth) when the box shape is formed. A shorter rectangle. The ratio of width to depth is about 1 to 2.3. The cover plate 50 connected to the upper edge of the front end plate 20 closes the upper surface opening formed by the end plates 10 and 20 and the side plates 30 and 40 when a box shape is formed.
The lid plate 50 is provided with a folding flap 51, and when the lid plate 50 is closed, the lid plate 50 is inserted into the upper surface opening to stabilize the position of the lid plate 50.
A left lid support flap 31 and a right lid support flap 41 are provided on upper edges of the left side plate 30 and the right side plate 40, and have a function of supporting the lid plate 50 when the lid plate 50 is closed. .

  A rear bottom plate flap 60 and a front bottom plate 70 are connected to the lower edges of the end plates 10 and 20, respectively. The front bottom plate 70 is provided with a slot 71 into which the front end of the rear bottom plate flap 60 is inserted. In order to form a three-dimensional box shape from a flat paper plate state, When the left and right plates 30 and 40 are raised in a direction perpendicular to each other, the rear bottom plate flap 60 is inserted into the slot 71 provided in the front bottom plate 70 from the tip to constitute the bottom surface.

  A left bottom support flap 32 and a right bottom support flap 42 are provided at the lower edges of the left side plate 30 and the right side plate 40. These left and right bottom support flaps 32, 42 are a combination of the front bottom plate 70 and the rear bottom plate flap 60. It plays the role of raising the strength of the bottom surface.

FIG. 2A shows a bottom view of the paper box 100 assembled. FIG. 2B is a diagram showing the overlapping state of the rear bottom plate flap 60, the front bottom plate 70, the left bottom support flap 32, and the right bottom support flap 42 on the bottom surface side.
2A, when the paper box 100 is configured, the left bottom support flap 32 and the right bottom support flap 42 are located inside the front bottom plate 70, and the front end portion of the rear bottom plate flap 60 is the front bottom plate. 70 is inserted into the groove 71 from the outside.
In this embodiment, since the front bottom plate 70 substantially covers the bottom surface, the hatched portion in FIG. 2B is a portion where the paper plates are doubled when the paper box 100 is constructed. The crossed part is the part where the paperboard is tripled.

  As can be seen from this figure, in this embodiment, the paper board is doubled and tripled in most part of the bottom surface to play the role of supporting the contents. Accordingly, the strength of the bottom surface is remarkably higher than that of the conventional example, and the area inserted into the groove hole 71 of the front bottom plate 70 at the front end portion of the rear bottom plate flap 60 is large. It is possible to avoid such problems as the bottom is opened and the contents are removed.

FIG. 3 shows a configuration of a paper box according to another embodiment.
1 and 2 are denoted by the same reference numerals, and redundant description is omitted. In this embodiment, as shown in FIG. 3, the length of the front bottom plate 70 is provided at the lower edge of the front bottom plate 70. A shorter reinforcing flap 72 (up and down direction in FIG. 3) is provided. According to this configuration, when the front and rear end plates 10, 20, the left and right side plates 30, 40 and the reinforcing flap 72 are raised in a direction perpendicular to each other, the reinforcing flap 72 enters the paper box 100 and contacts the inner surface of the rear end plate 10. Therefore, the strength of the rear end plate 10 is reinforced, and the rear end plate 10 is prevented from being twisted or dented.

FIG. 4 shows a configuration of a paper box according to still another embodiment.
1 and FIG. 2 are given the same reference numerals, and redundant description is omitted. In this embodiment, as shown in FIG. 4, the lower edge of the front bottom plate 70 is substantially the same as the front bottom plate 70. Reinforcing flaps 73 of the size are provided. According to this configuration, when the front and rear end plates 10, 20, the left and right side plates 30, 40 and the reinforcing flap 73 are raised in a direction perpendicular to form a three-dimensional box shape from a flat paper plate state, A rear bottom plate flap 60 is inserted into a slot 71 provided in the front bottom plate 70 from the tip to constitute a bottom surface. At this time, since the reinforcing flap 73 can enter the inside of the paper box 100 and cover one surface inside the bottom surface, the bottom surface becomes a double bottom and the bottom surface can be reinforced.

  As mentioned above, although the Example of this invention was described, it cannot be overemphasized that this invention is not limited to the said Example, A deformation | transformation implementation is possible suitably in the range of the summary of this invention.

  As described above, the present invention can constitute a paper box having a simple structure and improved bottom strength, and can be widely used as a storage paper box for various products such as confectionery and pet food. It can be used in various fields.

It is an expanded view of the paper box of this invention. It is explanatory drawing which shows the bottom view of the paper box of this invention shown in FIG. 1, and the lamination | stacking part of a paper board. It is an expanded view of the paper box which concerns on other embodiment. It is an expanded view of the paper box which concerns on other embodiment. It is an expanded view of the conventional paper box. It is explanatory drawing which shows the bottom view of the conventional paper box shown in FIG. 3, and the lamination | stacking part of a paper board.

Explanation of symbols

10 rear end plate 11 glue margin 20 front end plate 30 left side plate 31 left lid support flap 32 left bottom support flap 40 right side plate 41 right lid support flap 42 right bottom support flap 50 lid plate 60 rear bottom plate flap 70 front bottom plate 71 slot 72 72 Reinforced flap 100 Paper box

Claims (4)

A rectangular paper board when unfolded in a plane, and a pair of left and right side plates facing each other, and a pair of front and rear end plates facing each other with the left and right side plates and side edges connected to each other. Two or more left and right side plates and a cover plate connected to the front and rear end plates at the upper edge, a glue margin for bonding one of the left and right side plates and the end plate, and one lower edge of each of the front and rear end plates Having a connected bottom plate and a bottom plate flap connected to the other lower edge;
When the left and right side plates and the front and rear end plates are raised in a direction perpendicular to each other in order to form a three-dimensional box shape from a flat paper plate state, the paper plate is inserted into a slot provided in the bottom plate. A paper box, wherein a bottom plate flap is inserted from the tip to form a box shape by forming a bottom surface.   The paper box according to claim 1, wherein a tip of the bottom plate flap is inserted from the outside toward the inside of the slot.   3. The paper box according to claim 1, wherein the bottom plate has a side plate reinforcing flap that is in contact with a part of one inner surface of the front and rear end plates and reinforces one of the front and rear end plates.   3. The paper box according to claim 1, wherein the bottom plate includes a bottom surface reinforcing flap that covers one surface of the bottom surface from the inside of the box shape and reinforces the bottom surface.

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