JPH053123U - Foam sheet for folding boxes and folding boxes - Google Patents

Abstract

(57) [Summary] [Purpose] When folded along a groove for folding lines, the side surfaces of the groove do not stick to each other so that there is no gap. (EN) Provided are a novel foam sheet for a folding box and a folding box which can form a folding box excellent in cosmetics and performance and which is economically excellent in producing no dust during production. A foam sheet for folding boxes, and a folding box using the same, wherein the groove of the corner forming portion provided in the strip-shaped synthetic resin foam sheet is a plurality of parallel V-shapes.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a foam sheet for a folding box and a folding box.

[0002]

[Prior art]

  Traditionally, wood has been widely used as a material for folding boxes, but in recent years it is lightweight and inexpensive. Valuable synthetic resin foam sheets are widely used as materials for folding boxes. From synthetic resin Foam sheets have excellent coloring and moldability, so folding boxes with various patterns and colors, prisms and circles Various folding boxes with various shapes such as shapes and rounded corners are formed.   Especially, the side wall and the bottom plate were formed of a synthetic resin foam sheet having a thickness of several mm. Folding boxes are widely used.   That is, when forming a rectangular folding box, the folding box is formed on the belt-shaped synthetic resin foam sheet. One V-shaped groove is provided at each corner, and the synthetic resin foam sheet is lined along this groove. Bend the sheet and glue the overlapping ends of the foam sheets together as needed. The side wall of the folding box is easily formed by fixing it by various means. Also, a so-called rounded box In order to form the groove, a plurality of folding line grooves are provided at each corner.   In addition to the groove for the folding line described above, the belt-shaped synthetic resin foam sheet also has a hanging structure. There is one relatively thick groove in the vertical direction. A folding box is formed by fitting the bottom plate into the groove. Also, outside the side wall of the folding box A decorative sheet is provided on the side, and depending on the pattern etc., a folding box suitable for various applications etc. Has been done.   Conventionally, the groove for the folding line provided in the synthetic resin foam sheet for the rounded box is It is easily formed by a saw blade and its cut is shown in Figures 3 (a) and 3 (b). Similarly, each has a rectangular cross section.

[0003]

[Problems that the device is trying to solve]

  However, it is provided on a conventional synthetic resin foam sheet for a rounded box. Fold the synthetic resin foam sheet along the fold line to form the side wall of the folding box. Since the fold line groove has a rectangular cross section, There is a gap that can not be made, as shown in Figure 3 (c) There is.   In addition, when forming grooves for folding lines using a saw, use a fine powder of synthetic resin foam. There is a problem that shavings are generated and the dust in the workplace becomes intense and the manufacturing environment is bad. It Further, there is a manufacturing problem that a facility for collecting this dust is required.   Furthermore, as another problem, paper, plastic sheets, as well as the outside of the folding box There is also a problem in that it is not possible to attach a decorative sheet composed of the like. Conventional cross section In the circular saw used to form the rectangular groove, the tooth of the circular saw is caught on the decorative sheet. This is because, for example, it was not possible to form an accurate groove.

[0004]   Therefore, the object of the present invention is to solve the above problems of the prior art and to bend along the groove. The sides of the groove do not stick together and create a gap when , In some cases, a decorative sheet is attached on the inside, which is excellent in terms of cosmetics and performance. A new folding box that can be formed and is economically superior that does not generate dust during manufacturing It is to provide a regular foam sheet for a folding box and a folding box.

[0005]

[Means for Solving the Problems]

  The above object is achieved by the present invention described below. That is, the present invention is a strip-shaped composite. The groove of the corner forming portion provided on the resin foam sheet has a plurality of parallel V-shapes. A foam sheet for a folding box and a folding box using the same.

[0006]

[Action]

  As a result of diligent study to solve the above-mentioned problems of the conventional technology, the present inventor has found that a round box V-shape with multiple grooves for folding lines formed in a belt-shaped synthetic resin foam sheet for Then, when the foam sheet is folded along this groove, the side surfaces of the groove are mutually It has rounded corners without sticking to each other, resulting in good cosmetic performance. The inventors have completed the present invention based on the knowledge that an excellent folding box is formed.   Also, if it is a V-shaped groove, you can cut off the groove part with a V-shaped cutter etc. Therefore, even if a decorative sheet is provided inside the folding box, the groove can be accurately formed. When cutting a groove with a V-shaped cutter, etc., the chips will be linear, so use a conventional circular saw. There is no generation of dust unlike when a groove for folding lines is provided, and manufacturing problems are solved. Based on this finding, the present invention was completed.

[0007]

【Example】

  Next, the present invention will be described in detail with reference to the drawings showing an embodiment of the present invention.   FIG. 1 is a partially enlarged view including a corner portion of a folding box foam sheet of the present invention, (A) is a plan view seen from the inside, and (b) is a sectional view thereof.   FIG. 2A shows a case where a folding box is formed using the foam sheet for folding boxes of the present invention. FIG. 6B is a perspective view of the folding box, and FIG. 6B is a perspective view of the folding box when bent along a V-shaped groove. It is a partially enlarged view of a corner.   FIG. 3 is a partial enlarged view including a corner portion of a conventional foam sheet for folding boxes, (a) is a plan view seen from the inside, (b) is a sectional view thereof, and (c) is a sectional view. FIG. 9 is a partially enlarged view of a corner of a conventional folding box when bent along a shaped groove.

[0008]   The folding box foam sheet of the present invention has a plurality of grooves for folding lines which are parallel to each other as shown in FIG. It is characterized by having a V shape.   That is, the folding box foam sheet of the present invention is a strip-shaped foam plastic sheet, There are multiple grooves at each corner that are fold lines that are thinly cut into a V shape with a letter cutter. The folding boxes, which are provided in parallel with each other, are formed by using the rounded corners as shown in FIG. It will be the corner of the mold. The more grooves are provided at this time, the more The corners of the folding box formed are round. The number of V-shaped grooves is generally Specifically, it is about 2 to 6, preferably 3 to 5.   In addition, the foam sheet for the folding box of the present invention is, depending on the number of corners provided, The folding box formed using this is a polygonal prism type such as rounded triangle, square, pentagon, etc. A variety of sources such as a cylinder type.

[0009]   The foam sheet for folding boxes according to the present invention is, for example, a foamed police sheet having a thickness of about 1 to 10 mm. Foam composite such as polyethylene sheet, expanded polyethylene sheet, expanded polypropylene sheet Along the flow direction of the synthetic resin plate, a desired number of Vs can be applied to each corner of the folding box. After forming the V-shaped grooves in parallel with a V-shaped cutter, etc., it is desired that the folding box has an appropriate height. Cut this at the width of. At the desired location, insert the bottom plate into the V-shaped groove. Then, the foam sheet for a folding box of the present invention is provided by being installed in the vertical direction.   The V-shaped groove for the folding line is formed after cutting the foamed synthetic resin sheet into an appropriate width. Of course, it may be formed.   Further, the V-shaped groove can be easily formed by various V-shaped cutters as described above. However, if the groove is too deep, it will cut along the V-shaped groove. The foamed plastic plate used is the outer surface of the folding box. It is preferable to laminate a decorative paper or a decorative plastic film.   Laminating such a decorative sheet on a foamed synthetic resin sheet is Depending on the material and pattern of the sheet, the folding box can be made even more beautiful and diverse. Not only is it possible to increase the strength of the bent part, but it is also preferable. Yes.   Further, the foam sheet for a folding box of the present invention is not limited to the outside of the folding box, It is preferable to laminate such a decorative sheet on the side as well. Like this inside Even if a decorative sheet is provided on the groove, the groove for the folding line of the foam sheet for the folding box of the present invention. Since it has a V-shape and is formed by a V-shaped cutter, etc., a groove is formed with a conventional circular saw. Unlike the case, you can easily cut the laminated decorative sheet, The groove can be formed accurately without breaking the decorative sheet.   In this way, the foam sheet for a folding box of the present invention is not limited to the outside of the folding box, As a result of being able to provide such a decorative sheet on the inside as well, the folding sheets to be formed from now on Further, the box becomes a folded box which is excellent in terms of cosmetics and performance.

[0010]

[Effect of device]

  As described above, the foam sheet for folding boxes according to the present invention is coated as shown in FIG. 2 (c). The foam sheet was bent along a plurality of parallel V-shaped grooves provided in the corner portion. In this case, the walls of the groove will not stick to each other firmly and will not create a gap. Is formed, which is different from the case of the conventional fold line groove having a rectangular cross section shown in FIG. To form a folding box that has excellent aesthetics and performance with no gaps. Can be done.   Further, the folding box of the present invention has a decorative sheet not only on the outside of the folding box but also on the inside. It can be laminated, and it is said that it is excellent in cosmetics and performance. come.   Further, the groove of the foam sheet for a folding box of the present invention is V-shaped, and the groove is a V-shaped cutter or the like. Since it is cut and formed with, the shavings at the time of manufacturing become a thin rod shape, and with a conventional saw Unlike the case where grooves for folding lines are formed, dust is not generated, The business environment can be improved.   Furthermore, it is easy to dispose of such fine rod-shaped shavings, and special dust is no longer required as in the past. It does not require recovery equipment and can be made economical.

[Brief description of drawings]

FIG. 1 is a partially enlarged view including a corner portion of a foam sheet for folding boxes according to the present invention, (a) is a plan view,
(B) is the sectional view.

FIG. 2 (a) is a perspective view of a folding box when the folding box is formed using the foam sheet for a folding box of the present invention,
(B) is a partial enlarged view of a corner of a folding box in which a foam sheet is folded along a V-shaped groove.

FIG. 3 is a partially enlarged view including a corner portion of a conventional foam sheet for folding boxes, (a) is a plan view,
(B) is a sectional view thereof, and (c) is a partially enlarged view of a corner when the foam sheet is bent along a groove having a rectangular cross section.

[Explanation of symbols]

1: Groove for folding line 2: Groove for inserting the bottom plate 3: Synthetic resin foam 4: Exterior decorative sheet 5: Inner decorative sheet

Claims (3)

[Scope of utility model registration request] 1. A foam sheet for folding boxes, wherein the groove of the corner forming portion provided in the strip-shaped synthetic resin foam sheet has a plurality of parallel V-shapes. 2. The foam sheet for folding boxes according to claim 1, wherein a decorative sheet is provided on the front surface and the back surface of the synthetic resin foam sheet. 3. A folding box comprising the foam sheet for a folding box according to claim 1 and a bottom plate.