JP2569223Y2 - Folding box - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding box comprising a foldable outer box and an inner bag.

[0002]

2. Description of the Related Art Conventionally, fresh foods such as vegetables and fruits are packaged in, for example, a polyethylene bag in a foldable rectangular parallelepiped outer box, for example, a cardboard box, and then transported. I have.

[0003] In order to save labor in such a packaging operation using a polyethylene bag and packing in a cardboard box, for example, one side of a polyethylene bag is attached to one inner wall surface of a cardboard box, and the cardboard box and the polyethylene bag are attached. There is a folding box that can be assembled so that the bottom of the bottom cover does not come off by pushing and opening an opening when assembling a corrugated cardboard box while attaching a part of the bottom cover in advance.

As shown in FIG. 8, a folding box of this type is, for example, a cardboard box 51 serving as an outer box.
An inner bag 53, which is a polyethylene bag, is point-adhered to the inside of 2 and folded into a planar shape. Also, one rear bottom lid corner 55 on the distal end side of the rear bottom lid 54 formed by extending the rear side wall 52 is formed as one of the rear boundary lines 56 between the rear side wall 52 and the rear bottom lid 54. It is attached to the lower side of the left bottom cover 59 in a state where it can be bent at a fold 58 along 45 degrees from the end 57. Similarly, one front bottom lid corner 62 on the front end side of the front bottom lid 61 formed by extending the front side wall 60 extends along one of the front boundary lines 63 between the front side wall 60 and the front bottom lid 61. It is attached to the lower side of the right bottom cover 66 in a state where it can be bent at a fold 65 along the 45 degrees from the two ends 64.

Then, as shown in FIG. 9, the front and rear bottom corners 62 and 55 of the front and rear bottom lids 61 and 54 extending from the front and rear side walls 60 and 52 are attached. Right and left bottom lid corners 67 and 68 adjacent to the front and rear bottom lid corners 62 and 55 in the right and left bottom lids 66 and 59, respectively.
Are the right and left side walls 69 and 70 and the right and left bottom lids 66.5
For example, it is chamfered at about 20 degrees from the end portions 64 and 57 of the right and left boundary lines 72 and 72 with 9.

[0006] By providing the chamfer of about 20 degrees in this way, when assembling the cardboard box 51 by pushing and opening the opening, the right and left bottom lid corners 67 and 68 are assembled.
Are not in contact with the front and rear side walls 60 and 52.

[0007]

However, in the above-mentioned conventional folding box, when assembling or folding the folding box, if the inner bag 53 is not provided, the above-mentioned approximately two boxes are required.
The 0 degree chamfer can prevent the right and left bottom lid corners 67, 68 from contacting the front and rear side walls 60, 52, but the inner bag 53 can be either the front or rear side wall 6
When it is stuck to 0.52, the right or left bottom lid corners 67 and 68 on the side to which the inner bag 53 is stuck come into contact with the inner bag 53 and push up or down, The sticking portion of the inner bag 53 tends to be damaged. In order to avoid this, care must be taken in assembling or folding the folding box, which causes a problem that the workability is deteriorated.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to prevent the inner bag from being damaged when assembling and folding the folding box, thereby improving the workability. Is to provide.

[0009]

The folding box of the present invention is
In order to solve the above-mentioned problem, a foldable outer box and an inner bag are provided, and the inner bag is provided so as to be foldable in a planar shape on any of the side walls before or after the outer box and provided. The front and rear bottom corners of the front and rear bottom lids on the front side of the front and rear bottom lids formed by extending the front and rear side walls, respectively, are in front of the front and rear side walls and the front and rear bottom lids. The inner bag is stuck in a folding box stuck below each of the right and left bottom lids in a state where it can be bent at a fold along 45 degrees from one end of the rear boundary line. At the front or rear bottom corner of the right or left bottom lid to which the front or rear bottom corner of the front or rear bottom lid formed by extending any front or rear side wall is attached. The adjacent right or left bottom lid corner is chamfered at an angle of approximately 45 degrees or more from the end of the right or left boundary line between the right or left side wall and the right or left bottom lid. It is characterized by being formed.

[0010]

According to the above construction, the front or rear bottom corner of the front or rear bottom lid, which is formed by extending from either the front or rear side wall to which the inner bag is bonded, is bonded. The right or left bottom corner of the right or left bottom lid adjacent to the front or back bottom corner is approximately from the right or left boundary line between the right or left side wall and the right or left bottom lid. Since it is formed by chamfering at an angle of 45 degrees or more, the right or left bottom lid corner is 4 mm of the front or rear bottom lid corner.
It does not protrude or slightly protrudes from the fold along 5 degrees.

Therefore, when assembling or folding the folding box, the corners of the right and left bottom lids have conventionally protruded greatly, so that they come into contact with the inner bag and push up or down the inner bag, thereby lowering the inner bag. Although the problem of peeling off the sticking has occurred, the folding box of the present invention has a front or rear bottom corner of the right or left bottom lid formed by extending the front or rear side wall before the inner bag is attached. Since the right or left bottom lid corners adjacent to the part are chamfered largely, the right or left bottom lid corners do not contact the inner bag. As a result, at the time of assembling and folding the folding box, it is possible to prevent breakage of the inner bag and improve workability.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the folding box of this embodiment comprises a cardboard box 1 as a foldable outer box, and an inner bag 2.

As shown in the development of FIG. 2, the above-mentioned cardboard box 1 is provided with a glue margin 2 at a side end, and a rectangular rear side wall 3, a left side wall 4, and a front side in the lateral direction. A wall 5 and a right side wall 6 are provided. In addition, from the upper end of each of these side walls 3, 4, 5, and 6, a rectangular upper lid 7 is provided.
Are provided, and the height H ₁ of the upper lids 7 is half the width W of the left side wall 4 and the right side wall 6.

Further, at the lower end of each of the side walls 3, 4, 5, and 6, a rear bottom cover 8, a left bottom cover 9, a front bottom cover 10, and a right bottom cover 11 are formed to extend, respectively. Can be bent at the respective boundaries, that is, the rear and front boundaries 16 and 16 and the left and right boundaries 17 and 17. The rear bottom cover 8 and the front bottom cover 10 are formed in the same shape, and the height H ₂ thereof is slightly longer than 幅 of the width W of the left side wall 4 and the right side wall 6. I have. The rear bottom cover 8 and the front bottom cover 10 have substantially trapezoidal recesses 12 formed in the center of the lower end.
Height H ₃ from the innermost side of 2 to the rear and front boundary 16
Is half the width W of the left side wall 4 and the right side wall 6. Further, one of the oblique sides of the trapezoid is curved to facilitate the assembly of the folding box.

Further, on the left bottom cover 9 side of the rear bottom cover 8 and on the right bottom cover 11 side of the front bottom cover 10, as shown by broken lines in FIG. Fold 1 along the 45 degrees from the ends 18 and 18 of the rear and front boundaries 16 and 16
3 is provided on the tip side.

On the other hand, the left bottom cover 9 is formed as a substantially isosceles triangle having a base angle of about 45 degrees and a left boundary 17 as a base. That is, the left bottom cover corner 19 adjacent to the rear bottom cover corner 15 of the left bottom cover 9 is formed by being chamfered at an angle α of approximately 45 degrees. The angle α is preferably about 45 degrees or more, because it does not protrude from the fold 13 when the folding box is assembled. However, the angle α is not limited to this. Is also good.

The right bottom cover 11 is formed in a trapezoid having the right boundary 17 with the right side wall 6 as a base, and the bottom angle on the front bottom cover 10 side is formed at about 70 degrees. Along with
The opposite base angle β is formed at about 45 degrees. Therefore, the right bottom lid corner 20 of the right bottom lid 6 on the front bottom lid 10 side is chamfered at an angle γ of approximately 20 degrees.

Further, between each of the side walls 3, 4, 5, 6, glue allowance 2, top cover 7,..., And bottom covers 8, 9, 10, 11 as shown by a two-dot chain line. , Folds are provided.

On the other hand, when the inner bag 2 is made three-dimensional, it is formed in a rectangular parallelepiped shape as shown in FIG. The inner bag 2 is formed into a rectangular parallelepiped by bending the left side surface 2a, 2a and the right side surface 2b, 2b and welding the joints 2c, 2d, etc., as shown in the developed view of FIG. Is formed.

When the rectangular parallelepiped inner bag 2 is folded, the joints 2c and 2d shown in FIG.
By folding the bottom surface 2e while maintaining the square shape, it can be made flat as shown in FIG. 1 (see FIG. 7).

The inner bag 2 is made of processed paper having a function of maintaining freshness, a film of non-foamed polyethylene or the like, or a foamed olefin-based sheet such as a foamed polyethylene sheet such as litelon (trade name). Vegetables,
It has a freshness maintaining function and a watertight function for fresh food such as fruits and seafood. Foamed olefin-based sheets such as the above-mentioned foamed polyethylene sheets have, for example, an expansion ratio of 20 to
It is 50 times and 1 mm to 5 mm thick, and also has a buffer function when storing industrial materials.

A method for manufacturing the folding box having the above configuration will be described below. First, as shown in FIG. 2, the unfolded cardboard box 1 is placed so that the inside faces up. Then, an adhesive is applied to the points 14... Of the rear bottom cover 8 and the inner bag 2 is point-bonded in a state of being folded flat. Next, an adhesive is applied to the glue margin 2, and an adhesive is also applied to the rear and front bottom cover corners 15, 15 formed by the folds 13 of the rear bottom cover 8 and the front bottom cover 10. Then, the rear and front bottom cover corners 15 and 15 are mountain-folded along the fold 13, and each bottom cover 8.9.1.
0.11 is valley-folded along each front and back boundary line 16.16 and left and right boundary line 17.17. Next, the valley is folded along the side fold 21 between the rear side wall 3 and the left side wall 4 and the side fold 22 between the front side wall 5 and the right side wall 6, as shown in FIG. The rear and front bottom lid corners 1
5 and 15 overlap under the left bottom cover 9 and the right bottom cover 11. Then, by pressing from the front and back of the cardboard box 1 in this state, the rear and front bottom cover corners 15 and 15 are adhered to the left bottom cover 9 and the right bottom cover 11, whereby the folding box is completed as a product.

Further, when assembling into a three-dimensional shape in order to accommodate the contents in the folding box, as shown in FIG. 1, the opening 23 of the folding box 1 folded as described above is pushed open. At this time, the left bottom cover 9 is overlaid on the rear bottom cover 8, the front bottom cover 10 is overlaid on the left bottom cover 9, and the front bottom cover 1
0, the right bottom cover 11 is overlaid, and the rear bottom cover 8 is overlaid on the right bottom cover 11. When the opening 23 is pushed and expanded, the left bottom lid 9 is chamfered with the left bottom lid corner portion 19, so that the cardboard box 1 can be expanded without bringing the left bottom lid 9 into contact with the inner bag 2.

Then, when the opening 23 is completely opened in a rectangular shape, as shown in FIG. 5, the bottom lids 8, 9, 10, and 11 are combined with each other so that the bottom does not come off. After that, by expanding the inner bag 2 three-dimensionally, it is possible to store the stored items.

On the other hand, when the folding box is used and discarded, for example, a regeneration process is performed. At the time of this regenerating process, it is necessary to separate the cardboard box 1 from the inner bag 2. However, since the inner bag 2 of this embodiment is only point-adhered to the rear side wall 3, the inner bag 2 Can be removed. Therefore, it is possible to easily perform separation and regeneration processing.

As described above, in the folding box of this embodiment, the rear bottom corner 8 of the rear bottom lid 8 formed by extending the rear side wall 3 to which the inner bag 2 is adhered is adhered. A left bottom lid corner 19 of the left bottom lid 9 adjacent to the rear bottom lid corner 15 is chamfered by approximately 45 degrees or more from the end 18 of the left boundary 17 between the left side wall 4 and the left bottom lid 9. Therefore, the left bottom lid corner 19 does not project or slightly projects from the fold 13 along the 45 degrees of the rear bottom lid corner 15.
Therefore, at the time of assembling or folding the folding box, conventionally, since the corner of the left bottom lid has protruded greatly, it comes into contact with the inner bag, pushes up or down the inner bag, and peels off the sticking of the inner bag. Although a problem has occurred, the folding box according to the present embodiment has a rear side wall 3 on which the inner bag 2 is attached.
The left bottom cover corner 19 adjacent to the rear bottom cover corner 15 of the left bottom cover 8 formed by extending the left bottom cover 8 is largely chamfered, so that the left bottom cover corner 19 does not contact the inner bag 2. As a result, at the time of assembling and folding the folding box, it is possible to prevent breakage of the inner bag and improve workability.

In this embodiment, the inner bag 2 is attached to the rear side wall 3 of the cardboard box 1, but the invention is not limited to this. For example, the inner bag 2 may be attached to the front side wall 5. Is also possible. In this case, the right bottom lid corner 20 of the right bottom lid 11
Is chamfered to approximately 45 degrees or more.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in the above-described embodiment, the cardboard box 1 has the upper covers 7... All having the same height H ₁ , but the present invention is not limited to this, and the cardboard boxes 1 can have various heights. .

For example, as shown in FIG.
0, the upper lid 31 formed by extending the rear side wall 3 is formed large, and the other upper lids 32, 33, 32 are formed small. Also in this cardboard box 30, when the inner bag 2 is attached to the rear side wall 3, the left bottom cover corner 19 of the left bottom cover 9 is formed to be chamfered to approximately 45 degrees or more. Then, as shown in FIG.
Can be assembled by pushing and spreading. Therefore, as in the case of the cardboard box 1, when the folding box is assembled and folded, the inner bag 2 is prevented from being damaged, and the workability can be improved.

[0031]

[Effect of the invention] The folding box of the invention is, as described above,
The front of the front or rear bottom lid to which the front or rear bottom lid formed by extending any front or rear side wall to which the inner bag is adhered or the right or left bottom lid to which the rear bottom lid corner is adhered Or, the right or left bottom lid corner adjacent to the rear bottom lid corner is formed by being chamfered at an angle of about 45 degrees or more from the right or left boundary line between the right or left side wall and the right or left bottom lid. Configuration.

Thus, the corners of the right or left bottom lid do not protrude or slightly protrude from the folds of the front or rear bottom lid corners along the 45 degrees. Therefore, when assembling or folding a folding box, conventionally,
The corner of the right or left bottom lid was protruding so much that it came into contact with the inner bag and pushed up or down the inner bag to peel off the inner bag, but the folding box of the present invention The right or left bottom corner of the right or left bottom lid adjacent to the front or rear bottom corner of the right or left bottom lid formed by extending from the front or rear side wall to which the inner bag is attached is largely chamfered. So do not touch the inner bag. As a result, at the time of assembling and folding the folding box, it is possible to prevent the inner bag from being damaged and to improve workability.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a folding box according to an embodiment of the present invention is slightly opened.

FIG. 2 is a development view of corrugated cardboard used for the folding box.

3A and 3B show a rectangular parallelepiped inner bag in the folding box, wherein FIG. 3A is a perspective view and FIG. 3B is a developed view.

FIG. 4 is a front view showing a state where the folding box is folded.

FIG. 5 is a plan view showing a state where the folding box is assembled.

FIG. 6 is a development view showing a cardboard box having an upper lid having a different shape.

FIG. 7 is a perspective view showing a folding box assembled by attaching an inner bag to the cardboard box.

FIG. 8 shows a conventional example, and is a perspective view showing a state where a folding box is assembled.

FIG. 9 is a development view of corrugated cardboard used for the folding box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corrugated cardboard box (outer box) 2 Inner bag 3 Rear side wall 4 Left side wall 5 Front side wall 6 Right side wall 8 Rear bottom lid 9 Left bottom lid 10 Front bottom lid 11 Right bottom lid 13 Fold 15 Front and rear bottom lid angle Part 16 Front / rear border 17 Left / right border 18 End 19 Left bottom lid corner

Claims (1)

(57) [Scope of request for utility model registration] 1. A foldable outer box and an inner bag,
The inner bag is provided so as to be foldable in a planar shape on either the front or rear side wall of the outer box, and is formed by extending the front and rear side walls. The front and rear bottom corners of each one of the front and rear side walls and the front and rear bottom lids can be bent at a fold along 45 degrees from one end of the front and rear boundary line. A folding box attached to the lower side of each of the right and left bottom lids, wherein the front or rear bottom lid is formed by extending any front or rear side wall to which the inner bag is attached. In the right or left bottom lid to which the front or rear bottom lid corner is attached, the right or left bottom lid corner adjacent to the front or rear bottom corner is the right or left side wall and the right or left bottom lid. Characterized in that the folding box is formed so as to be chamfered at an angle of about 45 degrees or more from the end of the right or left boundary line with the folding box.