JPS5855146Y2 - freestanding paper cup - Google Patents

Description

[Detailed description of the invention] This invention can be folded flat when not in use, and
The present invention relates to a paper cup that is completely self-supporting without being filled with contents during use.

Conventional cups, which can be folded flat when not in use and stand on their own when in use, are made of synthetic resin sheets, making it impossible to engrave creases on the cups themselves. It cannot be made to stand upright, and since the synthetic resin has a tendency to return to its original shape, it is difficult to open the bottom unless you put the contents in, and it returns to its flat state without standing up on its own. It has the disadvantage that it functions as a cup by filling it with contents and then tightening it.

In addition, since a synthetic resin sheet-like material is used, when making bags by heat sealing, the synthetic resin will thermally weld to the heat seal bar, making it difficult to make bags, so corona discharge treatment must be performed in advance. It also has the disadvantage that it requires a lot of effort and expense.

The present invention eliminates the above-mentioned drawbacks of conventional cups.

One embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a developed view, in which bent bottom parts 1, 1 are arranged at equal intervals in the center of a rectangular piece of paper coated with polyethylene on one side to provide heat properties. Three horizontal fold lines a, l), and c are carved, and one vertical fold line d is formed along each of the left and right sides to partition the adhesive parts 2, 2.

d is engraved, and vertical fold lines e and e are respectively engraved at positions slightly apart from the respective vertical fold lines d and d.

Note that 4 and 4 are notches. Therefore, the parts above the horizontal fold line a and the parts below the horizontal fold line C are respectively defined as side parts 3, 3, and the intersection of the horizontal fold line and the vertical fold line d is defined as M, the horizontal fold line a,
Let N be the intersection of c and the vertical fold line e, respectively.

Therefore, the imaginary line connecting the intersection point M and the intersection point N is defined as f, and the part of the bent bottom parts 1, 1 outside the imaginary line f is defined as the inscribed part 1.
1. The portion between the virtual line f and the vertical fold line e is defined as an inclined portion 12, and the portion between the vertical fold lines e and e is defined as a flat portion 13.

In assembling, the whole is folded W along transverse fold lines a, l) and c with the polyethylene coated side facing inside, and the adhesive parts 2, 2 are heat-sealed with a heat seal bar.

At this time, since the inner surfaces of the adhesive parts 2 of the bent bottom part 1 and the adhesive parts 2 of the side parts 3 face each other, they are heat-sealed with polyethylene, but the adhesive parts 2 of the bent bottom part 1 have their outer surfaces facing each other. Since the paper sides are facing each other, they cannot be heat sealed.

However, in the part cut out by the notch 4, the adhesive parts 2, 2 of the front and rear sides 3, 3 face each other with their inner surfaces facing each other, so the adhesive part of the bent bottom part 1 is heat-sealed with polyethylene. The state is approximately the same as when the two are heat-sealed together.

That is, the notch 4 is necessary because this embodiment uses paper with a polyethylene layer on only one side, and when using paper with a synthetic resin laminated on both sides with sealing properties for the heater 1. Since the adhesive parts 2 of the bent bottom part 1 are heat-sealed to each other by the synthetic resin on the outer surface, the cutout part 4 is not necessary.

In use, hold the adhesive parts 2 and 2 as shown in Figure 2 p.

When pressed from the outside as shown in p, the side parts 3, 3 are bent along vertical fold lines d and e, as shown in FIG.
The lower part opens into an approximately hexagonal cylinder shape, and the upper part opens into an approximately elliptical cylinder shape, and the new bottom parts 1, 1 are bent along transverse fold lines a and c, so that the flat part 13 becomes approximately horizontal, and the inscribed part 11 is Side part 3
The inclined portion 12 is in close contact with the inner surface of the inner surface of the inner surface of the IL plane portion 13.
A substantially triangular slanted state is formed between the two to form a bottom surface.

As mentioned above, since the present invention is made of paper, it has strong folds such as vertical fold lines d and e so that it can stand completely on its own even when no items are stored, and it has heat-sealability only on the inner surface. When a synthetic resin layer is provided, there are various effects such as preventing the synthetic resin from being thermally welded to the heat seal bar and reducing workability.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a developed view, Fig. 2 is a plan view after assembly is completed, and Fig. 3 is a perspective view showing the state of use. Explanation of the symbols representing the main parts of the diagram d, e...
・Vertical fold line.

Claims (1)

[Claims for Utility Model Registration] A rectangular piece of paper with folded bottom parts 1, 1 divided at equal intervals in the center,
In addition, there are three transverse fold lines a, l) and c that partition side parts 3.3 of the same size on the outside of the new bottom parts 1, 1, and adhesive parts 2, 2 along each of the left and right sides. one vertical fold line d,
d, and one vertical fold line e, e, respectively, is carved at a position slightly apart from the respective vertical fold lines d, d. W-fold along C, and laminate the overlapping adhesive parts 2 to each other, making the bent bottom parts 1, 1 between the vertical fold lines ee perpendicular to the vertical fold lines e, and the side parts 3, 3 between the e lines. Freestanding paper cup.