JP5202184B2 - Resin box - Google Patents

Description

  The present invention relates to a packaging box, and more particularly, to a body box having a partition made of a resin material, a resin sheet molded, bent and assembled.

For example, a packaging box for food or the like is often used in a high-quality product, but a wooden box is generally used for a product of normal quality.
In addition, there is a box having a partition in the body box in order to improve the appearance by assorting a plurality of different kinds of products and arranging the same kind of products in an orderly manner.

Such partitions may be formed integrally with the body box, or may be formed separately from the body box and arranged in the body box.
In addition, when it is molded integrally, it becomes a paper assembly box, and when it is configured separately, it is composed of two paper members, and the body box is made of paper and the partition is made of resin. Some will do.

For the purpose of facilitating transportation and storage, many packaging boxes are formed by bending a flat plate of a mold material into a three-dimensional shape of the box at the time of use.
As described above, although the paper mold is the mainstream, the mold with a partition has a complicated shape as a matter of course, and it takes time to form the mold.

For this reason, many methods have been adopted in which the body box and the partition are configured separately, and the partition (tray shape) is placed on the molded body box, and recently, the partition is made of resin.
JP 2004-268738 JP 2004-244083 A JP 09-188317 A

Currently, as a packaging form for souvenirs and gifts, the mainstream is a form in which a box made of resin or paper is placed in a paper box, the product is filled, and then the box is decorated with a hanging paper.
However, this method requires time and effort such as laying a partition after folding the paper box.
Further, in the case of paper partitioning, the molding of the paper is inevitably complicated, and it is necessary to procure and fold the partitioning member separately from the box, which further takes time.
On the other hand, even when a resin partition is used, the partition is laid after folding the paper box. In addition, each packaging material is made of different materials, so the complexity of sorting is undeniable. In addition, there are problems in terms of resource recycling.

  Therefore, the present invention aims to improve workability and simplify sorting by integrating the body box and the partition, and to reduce the resin wall thickness that forms the body box for the purpose of effective use of resources. In addition, it is intended to provide a resin box that can maintain the same strength as the current paper folding box.

A resin body box according to claim 1 of the present invention is a body box which is formed by bending a resin sheet, and an outer piece and an upper face piece are respectively provided on front and back sides of a rectangular bottom plate. Front and rear side plates made up of inner pieces are connected to each other, left and right sides of the bottom plate are connected to left and right sides, and left and right side plates made up of inner pieces are made to go through the outer pieces and upper surface pieces, respectively. A front and back side plate having a double wall surface with respect to the bottom plate, wherein a superposed piece is extended to the piece, and insertion flaps are continuously provided on both side portions of one inner piece of the front and rear side plate or the left and right side plate. The left and right side plates are folded upright, and the insertion flap is inserted and sandwiched between the inner piece and the outer piece of the other side plate, and each overlapping piece extended to the inner piece is pressed against the bottom plate. In the body part of the box where the box shape is maintained, a partition is projected on the bottom plate. Type was that, molded inner piece or outer piece uneven surface, all the protrusions molded into the inner piece or outer piece, to protrude into the hollow of the front and rear side plates and side plates, front and rear side plates and the side plates The convex portion formed on the inner piece or the outer piece is formed into a semi-cylindrical shape having a radius substantially the same as the width of the upper face piece over the vertical height direction of the inner piece that has been formed upright. It is characterized by this.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the partition is formed so as to protrude and form a hollow portion having an open outer surface of the bottom plate.

The invention of claim 3 is characterized in that, in the invention of claim 1 or 2 , the resin sheet has a thickness of 0.3 millimeters.

  According to the first aspect of the present invention, the front and rear side plates and the left and right side plates are bent with respect to the bottom plate and are formed upright, and the insertion flap is inserted and sandwiched between the inner piece and the outer piece of the other side plate. In addition, the box shape is maintained by pressing each polymer piece extended on the inner piece against the bottom plate, and the effect of easily assembling the body box with a resin sheet similar to a paper folding box Have

And the front and rear and left and right side plates are doubled on the inner and outer side pieces, and the inner piece or the outer piece is an uneven surface, so that sufficient strength can be secured and a thin resin sheet should be used. It is easy to handle such as assembling, and the cost can be kept low.
Further, since the partition is formed by projecting the partition on the bottom plate, the partition can be formed integrally, and there is no need to separately form a partition tray and an apparatus, and the effect of increasing the strength of the bottom plate is exhibited.

  In addition, since the body box and the partition are integrally molded and assembled with a resin sheet, the processing after use can be disassembled and left as it is in the form of a sheet, and the resin can be collected as it is, making disposal and recycling extremely easy and easy. It has the effect.

  Furthermore, in the invention of claim 1, since all the convex portions molded into the inner piece or the outer piece are protruded into the hollows of the front and rear side plates and the left and right side plates, both the inner wall surface and the outer wall surface forming the side wall Since the convex portion does not appear, it has a special effect that does not hinder the storage of the product or the mounting of the lid.

  Furthermore, in the invention of claim 1, the convex portion molded on the inner piece or the outer piece has a semi-cylindrical shape having a radius substantially the same as the width of the upper face piece over the vertical direction of the upright-formed inner piece. Therefore, the convex part molded on the inner piece or the outer piece protrudes into the hollow in the side plate formed by the outer side plate and the upper side piece of the front and rear side plates and the left and right side plates, and is arranged between the upper side piece and the bottom plate. Therefore, the front and rear side plates and the left and right side plates exhibit a special effect that can be withstood by pressure from above and below.

  In the invention of claim 2, since the partition is formed by forming and projecting a hollow portion having an open outer surface of the bottom plate, the bottom plate surface has an uneven shape and further increases the strength of the bottom plate, and the partition itself. Also exerts a special effect that can reliably maintain its form.

In the invention of claim 3 , by adopting the configuration of claim 1 or 2 above, even a sheet having a thickness of 0.3 mm compared to a thickness of 0.6 mm used for a conventional partition is a box. This has the effect of maintaining the form.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a developed sheet body 11 of a body box 1 showing an embodiment of the present invention.
FIG. 2 is a perspective view of the body box 1 formed by assembling the sheet body 11 of FIG. 1, and is used by inserting and removing a cover lid or a rectangular tube-shaped slide lid.
FIG. 3 is a perspective view showing the vicinity of the flap in the process of forming the body box 1 by folding the sheet body 11.
4, in FIG. 2 is an end view taken along only box 1 at the end face line A-A.
5, in FIG. 2 is an end view taken along only box 1 at the end face line B-B.
4 and 5, the thickness of the sheet is expressed as being thicker for the sake of hatching, but the actual thickness is much thinner than the outer dimensions of the body box.

The body box 1 is formed of a resin sheet. If a resin material suitable for the product to be packaged is selected and structural strength is obtained, the thinner the sheet is, the lighter and easier to handle.
The resin partition (tray) laid inside the conventional paper box has a thickness of 0.6 mm, but in the structure of the present invention, the thickness is maintained at 0.3 mm. Was planned.

As shown in FIG. 1, a bottom plate 2 is disposed at the center of a developed sheet body 11 that is assembled by folding the body box 1, and the bottom plate 2 is rectangular. In the present embodiment, the bottom plate 2 may be rectangular (a square may be used). .)
The bottom plate 2 is formed with concavo-convex ridges 21 and 22 in parallel with the short sides, and further protrudes from the ridges 22 on the inner side surface 24, and these protrusions form partitions 23.
That is, as shown in FIG. 4, the partition 23 is provided so as to form a hollow portion 26 in which the outer surface 25 of the bottom plate 2 is opened.

  In the drawing, although the partition 23 is a folding screen type, it can be molded into a well-known stepped or square shape, and a shape that has been commercialized as a resin partition can be applied.

Next, an outer piece 31 is connected to the left and right sides of the bottom plate 2 (referred to as the long side in FIG. 1) via a crease line 51, and the upper piece 32 is continuously connected via a crease line 52. Are further provided, and an inner piece 33 is provided continuously through a crease line 53.
Therefore, the left and right side plates 3 and 3 are formed by folding along the crease lines 51, 52 and 53 inward (to the bottom plate 2 side) and having a hollow 71 (see FIG. 5), which are formed by double plate surfaces. Is done.

On the other hand, the outer piece 41 is connected to the front and rear sides of the bottom plate 2 (referred to as the short side in FIG. 1) via a crease line 61, and the upper surface piece 42 is continuously connected via a crease line 62. Further, an inner piece 43 is continuously provided via a crease line 63.
Therefore, the front and rear side plates 4 and 4 are formed by folding along the fold lines 61, 62 and 63 inward (to the bottom plate 2 side), having a hollow 72 (see FIG. 4), and configured by double plate surfaces. Is done.

The inner strips 33 and 43 forming the left right plate 3 and the front and rear side plates 4 are provided with ribs 37 and 47 at regular intervals in the horizontal direction in the vertical width direction (the vertical height direction when the side plate is formed). Is provided.
The protruding ribs 37 and 47 protrude into the hollows 71 and 72 in the side plate formed by the outer pieces 31 and 41 and the upper surface pieces 32 and 42 of the left and right side plates 3 and the front and rear side plates 4, and the width of the upper surface pieces 32 and 42. (The width of the intermediate space in the side plate) is formed in a semi-cylindrical shape having a radius substantially the same as that of the side plate, and is disposed between the upper surface pieces 32 and 42 and the bottom plate 2 so that the left and right side plates 3 and the front and rear side plates 4 are vertically It will be structured to withstand the pressure from

In the drawing, the convex ribs 37 and 47 are formed on the inner pieces 33 and 43, but may be formed on the outer pieces 31 and 41, and protrude into the hollows 71 and 72 in the left and right side plates 3 and the front and rear side plates 4. Formed on the surface.
Moreover, although the semicircular shape is effective as the protruding shape, it is not limited to this shape.

  Further, continuous pieces 34 and 44 are extended through the crease lines 54 and 64 continuously to the inner pieces 33 and 43 forming the left and right side plates 3 and the front and rear side plates 4, respectively. It is bent so as to apply pressure and placed on the bottom plate 2.

Further, insertion flaps 35 are connected to both side portions of the inner pieces 33 of the left and right side plates 3 via fold lines 55, respectively.
The insertion flap 35 may be connected to both side portions of the inner piece 43 of the front and rear side plates 4.
And it connects with the side part of the outer piece 31 of the said right-and-left side board 3 and the side part of the outer piece 41 of the said right-and-left immediate board 4 adjacent to this with the connection flap 36 via the crease lines 56 and 65, respectively. A crease line 66 is also formed in the diagonal direction.

Each of the left and right side plates 3 and each of the front and rear side plates 4 is bent at each crease line and is erected with respect to the bottom plate 2.
Then, the outer piece 31 and the outer piece 41 become the outer surface wall of the body box 1, the upper surface piece 32 and the upper surface piece 42 become the upper end wall of the body box 1, and the inner piece 33 and the inner piece 43 become the inner wall of the body box 1. .
At this time, first, the left and right side plates 3 are formed upright, then the insertion flap 35 is bent 90 degrees to the left and right sides along the crease line 55, and the outer piece 41 and the inner piece 43 of the front and rear side plate 4 are wrapped so as to wrap the insertion flap 35. Can be inserted so as to sandwich the insertion flap 35 between the front and rear side plates 4 (see FIG. 3).

Then, the polymer pieces 34 and 44 are bent so as to be along the bottom plate 2, and the both ends of the polymer piece 34 are pressed by the both ends of the polymer piece 44, so that the box shape of the body box 1 is maintained. It is done.
When the left and right side plates 3 and the front and rear side plates 4 are erected with respect to the bottom plate 2, the connecting flap 36 is folded at the respective fold lines 56, 65, 66 and folded in half so as to be folded in half. At the same time, it is inserted so as to be sandwiched between the front and rear side plates 4, so that the box shape of the body box 1 is maintained and the formation of voids at the corners is prevented.

In addition, the formation of the crease line relating to the bending can be formed by using a formwork or a perforation in combination with the box material made of paper pattern.
The technical scope of the present invention described above is not limited to the above-described embodiments, but the scope of the technical idea that the present invention truly intends, which will become apparent from the matters described in this specification and the drawings. It is widely spread throughout.

It is a perspective view of the sheet | seat body which the body box which shows one embodiment of this invention developed. FIG. 2 is a perspective view of a body box formed by folding the sheet body of FIG. 1. It is a perspective view which shows the flap vicinity in the process in which a sheet | seat body is folded and a body box is shape | molded. In FIG. 2, it is the end elevation which cut | disconnected the body box by end surface line AA. In FIG. 2, it is the end elevation which cut | disconnected the body box by end surface line BB.

DESCRIPTION OF SYMBOLS 1 Body box 11 Sheet body 2 Bottom plate 21 Concave strip 22 Convex strip 23 Partition 24 Inner side surface 25 Outer side surface 26 Hollow portion 3 Left right side plate 4 Front and rear side plates 31, 41 Outer piece 32, 42 Upper piece 33, 43 Inner piece 34, 44 Polymerization Fragment 35 Insertion flap 36 Connecting flaps 37, 47 Convex ribs 51-56 Fold line 61-66 Fold line 71, 72 Hollow

Claims (3)

A body box that is formed by bending a resin sheet,
Front and rear side plates, each consisting of an inner piece with an outer piece and an upper piece in between, are connected to the opposite front and rear sides of the rectangular bottom plate, and the outer piece and the upper piece are placed between the opposite left and right sides of the bottom plate, respectively. Left and right side plates consisting of inner pieces are connected through
Further, a polymerization piece is extended to each inner piece, and insertion flaps are continuously provided on both sides of one inner piece of the front and rear side plate or the left and right side plate,
The front and rear side plates and the left and right side plates having a double wall surface with respect to the bottom plate are bent and vertically formed, and the insertion flap is inserted and sandwiched between the inner piece and the outer piece of the other side plate, and the inner side In the body part of the box where the box shape is maintained by pressing each polymer piece extending to the piece against the bottom plate,
Forming a partition on the bottom plate, molding the inner piece or outer piece to an uneven surface ,
All the convex parts molded on the inner piece or the outer piece are projected into the hollows of the front and rear side plates and the left and right side plates, and the front and rear side plates and the left and right side plates are bent and formed upright.
Protrusions molded on the inner piece or the outer piece are formed in a semi-cylindrical shape having a radius substantially the same as the width of the upper face piece over the vertical direction of the upright-formed inner piece . Body box.   2. The resin body box according to claim 1, wherein the partition protrudes by forming a hollow portion having an open outer surface of the bottom plate. The resin body box according to claim 1 or 2 , wherein the resin sheet has a thickness of 0.3 millimeters.

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