Paper package and straw

Abstract

A person thrusts a straw into a press-foldable paper package (20) through an insertion section (36) formed in the top thereof, whereupon he or she can pressingly fold the package flat from outside so as to press out the contents for drinking. The top and bottom of the package are bent flat, and triangular projections (21) disposed in the top and projection left and right are bent downward and are weakly adhesively bonded to the lateral surfaces (25) of the package by thermal processing. Disposed below the opposite surfaces (25) of the package are an inverted V-shaped fold (27) in a triangle surface with their bottoms (24) on the bottom side, and vertical folds (29) extending vertically upward from the vertexes (28). The lateral surface (25) of the package can be folded flat by folding the vertical folds (29) and inverted V-shaped folds (27). A first horizontal fold (31) and a second horizontal fold (34) are disposed below and above the front surface (30), respectively, to allow the front half of the upper surface and the front half of the bottom surface to be folded flat onto the front surface (30).

Description

TECHNICAL FIELD [0001] This invention relates to a press-deformable paper package and a straw wherein contents of juice, refreshing drinks, particularly, jelly food and the like contained in a paper package are drinkable by an external pressure without using a sucking force. BACKGROUND ART [0002] As illustrated in FIG. 16, a paper package 1 containing various kinds of refreshing drinks such as milk, a refreshing drink, juice and the like has an insertion section 2 into which a straw 3 is thrust in a top surface section 9 of the package to drink various kinds of refreshing drinks therein to allow drinking from an upper end of the straw whose tip end is thrust into a sealed film covering the insertion section. Unexamined Japanese Patent Publication 2000-313435 discloses such straw 3 which has a tip end that is obliquely shaped to be easily thrust into the insertion section 2 and which is attached to an outer surface of the package in a state that it is contained in a transparent bag 5...

AI Technical Summary

Benefits of technology

[0013] An object of the present invention is to provide a paper package and straw wherein a press-deformable paper package is pressed and folded from the outside thereof to make it possible to drink contents therein completely without the need of a sucking force and transfer the contents to the other container.

[0014] The present invention is a paper package wherein thick paper material having a waterproof thin film on its inner surface is cylindrically formed, its upper and lower edges are sealed and bent to form a top portion 35 and a bottom portion 24 opposite to each other, a front portion 30 and a back portion 38 opposite to each other, a pair of lateral surfaces 25, 25, triangular projections 21, 21 disposed upward and projected right and left are brought in close contact with the lateral surfaces 25, 25, triangular projections 22, 22 disposed downward and projected right and left are brought in close contact with the bottom portion 24 to form a square box shape, an insertion section 36 for inserting a straw is formed on the top portion 35, and the upper triangular projections 21, 21 are weakly bonded to the lateral surfaces 25, 25 by thermal processing or heat treatment. Since the triangular projections are weakly bonded to the lateral surfaces, they can be easily peeled off from the lateral surfaces without causing damage on the nails and the upper portions of the lateral surfaces of the package are easily folded to allow the contents to be pushed out.

[0020] Still moreover, the present invention includes at least one auxiliary fold 32 having a distance corresponding to a natural number multiple of a width w1 of the bottom portion 24 from the first horizontal fold 31, and being parallel with the first horizontal fold 31. In such a large-sized container, if the auxiliary fold 32 is formed on the front portion 30, the contents are moved upward while the bottom portion 24 folded flat on the front portion 30 is bent sequentially, making it possible to push the contents outward from the straw.

[0021] Still moreover, the paper package includes a second horizontal fold 34 passing through both vertexes 23, 23 of the upper triangular projections 21, 21 and being in parallel with the top portion. For this reason, the front half of the top portion 35 is folded flat on the front portion 30 with the second horizontal fold 34 formed on the front portion inside without peeling off the upper triangular projections 21, 21 from the lateral surfaces 25, 25, making it possible to press the contents outward.

[0024] Still moreover, in the present invention, contents having viscosity of 10 mPa·s and more are packed. In the case of the refreshing drinks, it is possible to suck them by even a weak sucking force since the viscosity is low, however, in the case of the contents having a high viscosity such as rice gruel, it is difficult to suck the contents unless a strong sucking force is generated. For this reason, according to the present invention, even when the strong sucking force is required, for example, in the case of eating the contents having a high viscosity of 10 mPa·s and more, it is possible to easily eat them by only a pressing force from outside without the need of the sucking force.

[0028] The present invention is the paper package and straw which includes a foldable package and viscous fluid and which facilitates the flow of contents, and since the contents of the press-deformable package are drunk, even if a person does not suck the straw thrust into the insertion section of the package or cannot suck the straw, guiding folds are formed to fold the package flat and the package is pressed from outside to be deformed flat to allow the contents to be pressed outward from the straw. Though the strong sucking force is required to drink the contents having a high viscous fluid, even persons such as infants, old persons, sick persons, who are too weak physically to generate a strong sucking force, can press the contents of the package outward by the pressing force from outside to make it possible to drink them.

Problems solved by technology

However, in the case of the contents of viscous liquid having viscosity such as a jelly drink rather than a solution such as a refreshing drink, a strong sucking force is required to drink them through the straw.

For this reason, it was difficult for persons such as infants, sick persons, old persons, who were too weak physically to produce a strong sucking force, to drink the contents.

In this case, there were problems in which a strong force for squeezing was required instead of the sucking force, the cost of package material was increased, and much time was required for garbage disposal since packages whose contents were drunk up had to be sorted.

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