JPH044613Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a paper cup formed into a cup shape from paper.

[Summary of the idea]

This invention increases the strength of the curled portion of a paper tip made of inexpensive laminated paper to a sufficient value by filling the gap between the curled portion of the paper tip made of laminated paper and the body with synthetic resin or wax. It was designed to be.

[Conventional technology]

Paper cups are widely used to dispense various beverages by vending machines. Such a paper cup is made of impregnated paper impregnated with wax and formed into a cup shape, and the opening edge is rolled up to the outside to form a curled portion. The curl portion provides a certain strength to the paper tip and maintains its shape. However, with paper tips impregnated with wax, when the temperature inside the vending machine becomes high, the wax begins to melt and a blocking phenomenon occurs in which the paper tips fuse together. Furthermore, if the powder-based contents are dissolved in hot water in the vending machine at the time of sale, the wax may start to melt, which has the drawback of limiting the types of beverages that can be dispensed.

[Problem that the invention attempts to solve]

In order to compensate for the drawbacks of such a cup made of paper impregnated with wax, it is conceivable to form a paper cup using laminated paper. However, unlike paper tips made of wax paper, paper tips made of laminated paper do not have wax remaining in the curled parts, so the strength of the curled parts is about 1.5.
It becomes 1/1. In addition, the size of the curled part is limited due to the shape and dimensions of the piece that separates the tip in the vending machine, so it is difficult to curl the curl of a tip made of laminated paper, which requires thicker paper to increase the strength of the tip. It is difficult to produce that strength. Therefore, a paper tip made of laminated paper has a problem in that the impact strength when it is separated from other paper tips and dropped inside a vending machine is low, making it more likely that problems will occur when feeding the paper tip. . Increasing the stacking pitch of the paper tips and improving the ability to withstand the impact when the paper tips are dropped will reduce the storage capacity of the paper tips in the vending machine, or will also require a large space to store the paper tips. This will cause problems that require additional steps. The present invention was developed in view of these problems, and is a paper tip that gives the curled part of a paper tip made of laminated paper a strength equal to or higher than that of a paper tip made of wax-impregnated paper. The purpose is to provide the following.

[Means to solve the problem]

The present invention provides a paper cup which is formed into a cup shape from laminated paper, whose bottom part is closed by a bottom plate, and whose opening edge is rolled outward to form a curled part. The gap between the body and the body is filled with synthetic resin or wax.

[Effect]

Therefore, according to the present invention, the distal end side of the curled part is joined to the body part using synthetic resin or wax filled in the gap between the curled part and the body, thereby stabilizing its shape. , it becomes possible to provide sufficient strength to the curled portion, thereby making it possible to use paper cups made of laminated paper in vending machines.

【Example】

2 and 3 show a paper tip 10 according to a first embodiment of the present invention. This paper tip 1
0 is used for dispensing various beverages by a vending machine, and is formed into a cup shape by punching out a fan shape from laminated paper and rolling it up. The upper part thereof is formed into an opening 11, and the bottom part thereof is closed by a bottom plate 14. That is, as shown in FIG. 3, the folded portion 12 provided at the lower end of the body portion of the paper tip 10 is engaged with the peripheral wall portion 15 of the bottom plate 14, thereby closing the bottom opening. . A curled portion 16 is formed at the edge of the opening 11 of the paper cup 10 made of laminated paper thus formed into a cup shape.
As shown in an enlarged view in FIG. 1, the inside of this curled portion 16 is filled with a synthetic resin thread adhesive, such as hot melt or wax 17, thereby attaching the paper tip 10 to a predetermined position. I try to give it strength. Moreover, the hot melt or wax used has a high melting point.
This makes it possible to sufficiently withstand the operating temperature inside the vending machine. Note that the hot melt or wax 17 is filled from the gap between the curled portion 16 and the paper tip 10, but an opening is partially formed at the lower end of the curled portion 16. , hot melt or wax 17 may be filled through this opening. As described above, according to the paper tip 10 according to the present embodiment, since the curled portion 16 is filled with a hot melt agent or high melting point wax 17, the strength of the curled portion 16 is higher than that of the conventional paper tip. Improved by approximately 50% or more. In addition, when the hot melt or wax filled in the curled part 16 solidifies, its volume shrinks by about 15%, which helps the curled part 16 to be rolled up, makes its shape uniform, and makes it easier to store paper in the vending machine. This will significantly improve the adaptability for separation and supply of Moreover, since the hot melt or wax 17 is filled in the gap between the distal end portion of the curled portion 16 and the portion facing the outer circumferential surface of the body 10 and the body 10, the hot melt or wax 17 prevents the curl from curling. The portion 16 is reinforced, and deformation of the curled portion 16 becomes less likely to occur. Therefore, the shape of the curled portion 16 is maintained stably, and in particular, the upper end portion of the paper tip 10 is reinforced, thereby increasing the stability of the shape. Therefore, using cheap laminated paper, paper tips 10
It becomes possible to form the curled portion 16 and provide sufficient strength to the curled portion 16. In addition, because hot melt or wax can withstand the temperatures used in vending machines, these substances start to melt and form paper cups.
0 will not cause blocking. Furthermore, even when filling the paper cup 10 with hot water in a vending machine and adding powder-based contents to dispense a beverage, the hot melt or wax will not dissolve into the hot water, so that the beverage to be dispensed will not melt. The type is not limited and can be used to supply various types of beverages. Next, a second embodiment will be explained with reference to FIG. In this second embodiment, the curling part 16 is not filled with a synthetic resin adhesive or wax, and the part between the winding tip side part of the curling part 16 and the body part of the paper tip 10 is formed. The gap is filled with hot melt or wax 17. According to this embodiment, therefore, the curled portion 16 itself is hollow. However, since the distal end portion of the curled portion 16 and the body portion are adhesively fixed with an adhesive 17 or the like, the curled portion 16 is reinforced thereby. It becomes possible to achieve the same effects as. Further, according to such an embodiment, it is possible to reduce the amount of reinforcing adhesive or wax 17 used. Next, a modification of the above embodiment will be explained with reference to FIG. In this modification, the adhesive 17 is applied in advance by printing to the outer surface of the tip end of the curled portion 16 before wrapping it around a paper tip.
After this, the curled portion 16 is formed by curling. Note that when curling is performed at high speed to form the curled portion 16, the curled portion 16 generates heat due to this processing, and the adhesive 17 is melted by the heat. Therefore, by utilizing this heat, it becomes possible to bond the gap between the tip side portion of the curled portion 16 and the body portion of the tip 10 with the hot melt 17. According to such a modification, the amount of adhesive 17 used is further reduced, and there is no need to fill adhesive 17 later, thereby reducing the cost of assembling the paper tip 10. become.

[Effect of the idea]

As described above, the present invention is such that the gap between the curled part and the body of a cup-shaped paper cup made of laminated paper is filled with synthetic resin or wax. For example, a portion of the tip of the paper tip that faces the upper end of the body of the paper tip is joined to the body of the paper tip through a synthetic resin or wax. Therefore, the safety of the shape of the curled portion connected to the body portion via the synthetic resin or wax is increased, and the strength of the curled portion is increased. This makes it possible to stabilize the shape and improve the strength of the portion on the upper end side of the paper tip where the curled portion is formed. Moreover, since the synthetic resin or wax is designed to bond between the tip side of the curled part and the body, the bonding is performed on the outside of the body of the paper tip. No synthetic resin or wax comes into contact with the liquid poured into this paper tip. Therefore, the synthetic resin or wax will not melt out and mix with the beverage in the paper cup. Therefore, it is possible to prevent troubles inside the vending machine, especially when drinks are dispensed by the vending machine.

[Brief explanation of drawings]

FIG. 1 is an enlarged sectional view showing the curled part of a paper tip according to the first embodiment of the present invention, FIG. 2 is an external perspective view showing the overall shape of the paper tip, and FIG. 3 is a longitudinal sectional view of the same. FIG. 4 is an enlarged sectional view of the curled portion of the paper tip of the second embodiment, and FIG. 5 is an enlarged sectional view of the curled portion of the paper tip of the modified example. In addition, in the symbols used in the drawings, 10... Paper tip, 11... Opening, 16... Curled part, 17...
...Hotmelt or wax.

Claims (1)

[Scope of claims for utility model registration] 1. Formed into a cup shape from laminated paper,
In a paper cup whose bottom is closed by a bottom plate and whose opening edge is rolled outward to form a curl, the gap between the curl and the body is filled with synthetic resin or wax. A paper tip that is characterized by the following. 2. The paper cup according to claim 1, wherein the inside of the curled portion is also filled with synthetic resin or wax. 3. The synthetic resin is composed of an adhesive applied in advance to the outer surface of the tip side of the curled portion, and the adhesive is melted by the heat generated in the curling process, and the curled portion and the body portion are bonded together. The paper tip according to claim 1 of the utility model registration claim, characterized in that the adhesive is bonded to the paper tip.