JPS6030171Y2 - paper box - Google Patents

Description

[Detailed description of the invention] This invention relates to a paper box, and is particularly applicable when a paper box with a heat-adhesive synthetic resin film laminated on the inner surface is used, and the paper box has an even polygonal cross section. It is used for baking, frozen foods, frozen desserts, etc.

Conventionally, paper boxes with a polygonal cross section made of paper laminated with heat-adhesive synthetic resin on the inner surface have been used, but in this case, when securing the adjacent side walls with flaps etc., it is necessary to use heat-adhesive synthetic film. I had to glue it on a surface that didn't exist.

This is an uneconomical and labor-intensive process of adhering using adhesive, and it is also uneconomical to laminate heat-adhesive synthetic resin on both sides of the paper in order to save this labor. .

In the present invention, thermoadhesive synthetic resin laminated paper is used only for the inner surface of the paper, and the adhesive layers are overlapped for adhesion, so the adhesion by thermocompression bonding is strong.

However, when unfolding this paper box, taking into account that it would not be easy to peel it off, a half-cut spot with a depth of about half the thickness of the paper was formed in advance on one side of the heat-adhesive film to be adhered. The main point is that the box can be opened extremely easily by placing it in place.

The paper box of the present invention, for example, one having a regular octagonal cross section will be described in detail.

FIG. 1 is an external view showing the completed state of the paper box of the present invention, and FIG. 2 is a developed view of its blank sheet.

Side walls 2, 3, 4° 5.6, 7 around the regular octagonal bottom 1
, 8, and 9 are provided so as to stand upright, and each side wall is connected by a fan-shaped flap.

In other words, 10 between side walls 2 and 3, and 1 between side walls 3 and 4.
1. Next, 8 fan-shaped flaps having a crease at the center are successively installed in the following order: 13, 14, 15, 16, and 17.

Side wall 2. 4.6. Rectangular fold-back flaps 18, 19, 20, and 21 are provided on the upper edges of the four pieces of paper 8, and on the heat-adhesive synthetic resin layer side (inner surface) of each of these flaps, there are half-shaped folding flaps with a depth of about half the paper thickness. A plurality of cut-shaped spots a are provided.

On the other hand, each of the fan-shaped flaps has flaps 3, 5, and 7.
．． A separation flap b is provided on the center fold by making a cut with the same width as the width of the rectangular folded flap so as to protrude horizontally above 9 and continuing, and continuing this cut to the upper edge of the fan-shaped flap.

Flaps C are also provided at the leading edges of the side walls 3, 5, 7.9.

To assemble the box from this blank sheet, all the side walls are erected and each of the rectangular fold-over flaps 18. 19.20.21 is folded outward and pasted on the outer surface of each side wall, for example, side wall 2 has a separating flap b of a fan-shaped flap between adjacent side wall 9 as shown in the illustration in FIG. Overlay the rectangular flap flap 18 affixed to the top of the side wall 2, while the other adjacent side wall 3
By folding the separation flap b of the fan-shaped flap 10 between the side wall 2 and the side wall 2 toward the side wall 2, overlapping it on the rectangular folding flap 18, and thermally bonding it, a paper box as shown in the external view of FIG. 1 can be obtained. .

After putting ingredients for cooking or confectionery into a paper box, or putting it in the refrigerator to make frozen desserts, you can take out the box and serve it as is or unfold it and serve it to the dining table. Become.

During this deployment, the rectangular flap and separation flap b
If the adhesive is too strong, it may be difficult to unfold the rectangular flaps 18, 19, 20.2.
The structure is such that peeling occurs within the paper waste under the adhesive surface at the half-cut spots a provided in each of the adhesive surfaces 1 and 1, so that the adhesive sheet can be easily expanded.

The flap C can be used as a knob during movement.

As described above, the present invention is a paper box that has an even polygonal cross section and is laminated with an inner synthetic resin film that has a fan-shaped flap that extends between the side walls and has a crease in the center. Fold the rectangular flap with half-cut spots on the resin layer side outward and attach it to the outer surface of the side wall. This paper container is characterized in that the flaps are further separated up to the upper edge by making parallel cuts, and the cut-separated portions are thermocompression bonded onto the folded flaps of the adjacent side walls.

[Brief explanation of drawings]

Fig. 1 is an external view of a paper box with a regular octagonal cross section as an embodiment of the present invention, Fig. 2 is a developed view of its blank sheet, and Fig. 3 is an illustration of the area on the side wall adjacent to the separation part of the fan-shaped flap between the side walls. It is an explanatory view showing a method of pasting to a rectangular folded flap with a half-cut spot. 1...bottom, 2.3.4.5.6.7.8.9.
...Each side wall, 10, 11, 12, 13, 14, 1
5.16,17...Sector flap, 1B, 19
゜20.21... Square folding flap, a...
・・・Half cutting spot at half the depth of the paper thickness, b...
・Separation part of fan-shaped flap, C...Knob flap.

Claims (1)

[Scope of utility model registration request] In a paper box laminated with an internal heat-adhesive synthetic resin film that has an even polygonal cross section and a fan-shaped flap that extends between the side walls and has a crease in the center, a half-cut at a depth of about half the paper thickness is used. Fold the rectangular flap with the Rispot on the resin layer side outward and stick it to the outer surface of the side wall, and cut in parallel to the upper edge of the side wall above the half of the fan-shaped flap that connects to the adjacent side wall with the width of the rectangular flap. , the flap is further separated up to the upper edge thereof, and the cut separation portion is thermocompression bonded onto the folded flap of the adjacent side wall.