JP2002179089A - Bag made of synthetic resin film paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag made of a synthetic resin film having a novel structure which is formed with a water collecting chamber at the inside bottom of the bag for separating an item stored from water oozing out in the bag. SOLUTION: The bag made of synthetic resin film is formed of a quadrangular bag body 1 made of thermoplastic synthetic resin film having an upper opening 3 and a bottom seal 4 being welded, roughly horizontally and continuously in all its width. At a position a required distance above from the bottom seal 4, a discontinuous inner bottom seal 7 comprising a welded part 5 forming an inner bottom roughly horizontally and a part 6 not welded forming a drain hole is welded forming a water collecting chamber 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag made of a thermoplastic synthetic resin film.

[0002]

2. Description of the Related Art So-called polyethylene bags, which are widely used as wrapping bags for vegetables and other goods, shopping bags, etc., such as garbage bags, and other thermoplastic synthetic resin film bags, have a quadrangular bag body at the top. It is formed by welding a bottom seal that is opened and is continuous in a substantially horizontal direction over the entire width below, with a gusset having an inward fold on both sides of the bag body and without a gusset without a fold. Both types are available.

[0003] In such a conventional bag made of synthetic resin film, when a highly watery substance such as vegetables or garbage is stored regardless of the presence or absence of the gusset, the water oozing out of the bag accumulates on the inner bottom of the bag. There is a risk that the contents will be immersed in water, and if the contents are vegetables etc., the quality of the vegetables will be degraded and the product value will be reduced, and if the contents are raw garbage etc., there is a risk of decaying quickly, There were problems such as unsanitation.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised to solve the above-mentioned conventional problems. The present invention has been made by forming a water reservoir in the inner bottom of a synthetic resin film bag. It is an object of the present invention to provide a synthetic resin film bag having a novel structure capable of isolating water oozing from the container.

[0005]

The construction of the present invention for achieving the above object will be described with reference to embodiments. The synthetic resin film bag of the present invention comprises a gusset 2 folded inward on both sides. A synthetic resin formed by welding a quadrangular bag 1 made of a polyethylene film or other thermoplastic synthetic resin film having or not having an upper opening 3 and a bottom seal 4 that is substantially horizontally continuous over the entire lower width. In a film bag, a discontinuous midsole provided with a welded portion 5 forming a midsole in a substantially horizontal direction above a bottom seal 4 with a required gap and a non-welded portion 6 serving as a drain hole. The main feature is that the water reservoir chamber 8 is formed by welding the seal 7.

[0006]

Embodiments of the present invention will be described below with reference to the drawings based on embodiments.

[0007]

1 to 3 show a case where the present invention is applied to a bag A made of synthetic resin film with a gusset, and FIGS.
Illustrates a case where the present invention is applied to a bag B made of a synthetic resin film without a gusset.

In FIG. 1, A is a quadrilateral bag 1 made of a polyethylene resin film or other thermoplastic synthetic resin film, and has gussets 2 folded inward on both sides to increase the storage amount. This is a bag made of a synthetic resin film of the type having an upper opening 3 and a bottom seal 4 which is continuous in a substantially horizontal direction over the entire lower width by welding.

In addition to the above-described structure, a discontinuous state in which the welded portion 5 and the non-welded portion 6 are intermittently linearly mixed in a substantially horizontal direction over the entire width above the bottom seal 4 with a required gap therebetween. The bottom seal 7 is formed by welding. The welded portion 5 of the midsole seal 7 serves as a partition forming the midsole,
A water reservoir 8 is formed between the inner bottom seal 4 and the inner bottom seal 7. The non-welded portion 6 of the midsole seal 7 is configured to introduce water on the midsole seal 7 inside the bag body 1 into the water storage chamber 8 as a drain hole.

In the bag made of the synthetic resin film of the present invention having the above-described structure, the contents are stored on the midsole seal 7 inside the bag body 1. The contents contain moisture and cause the water to seep out. In this case, the exuded water passes through the non-welded portion 6 of the inner bottom seal 7 and is stored in the water storage chamber 8, and can be isolated from the contents on the inner bottom seal 7.

The two embodiments shown in FIGS. 2 and 3 have the same basic structure as the embodiment shown in FIG.
The shape of the welded portion 5 in the midsole seal 7 is different.

In the embodiment shown in FIG. 2, both wings of each welded portion 5 in the midsole seal 7 are formed in a refraction linear shape bent obliquely outward and downward. With this configuration, it is possible to improve the introduction of water from the non-welded portion 6 serving as the drain hole into the water storage chamber 8 and prevent the water in the water storage chamber 8 from flowing back onto the inner bottom seal 7. There are advantages that can be.

In the embodiment shown in FIG. 3, each welded portion 5 of the midsole seal 7 is formed in a convex curve shape. With such a configuration, there is an advantage that the horizontal portion can be eliminated from the midsole seal 7 and drainage from the midsole seal 7 can be improved.

FIGS. 4 to 6 show the present invention applied to a gusset-free type synthetic resin film bag B as described above, and are similar to the respective embodiments shown in FIGS. It has a structure of.

[0015]

According to the present invention, as described above, in the case of a synthetic resin film bag according to the first aspect, in the case of a container containing moisture, water oozing out in the bag from the inner bottom seal to the water storage chamber. It can be stored and separated from the contents,
It is possible to maintain the quality of the product, suppress the deterioration of the value of the product and delay the decay of the contents, and it is hygienic, and is particularly suitable as a garbage bag for garbage or a vegetable wrapping bag for vegetables. In addition, it has excellent effects such as simple structure and inexpensive production and provision.

In the bag made of a synthetic resin film according to the second aspect, the ability to introduce water from the non-welded portion 6 serving as a drain hole into the water storage chamber 8 can be improved, and the water in the water storage chamber 8 is filled with water. There is an advantage that backflow on the bottom seal 7 can be prevented.

In the bag made of a synthetic resin film according to the third aspect, there is an advantage that a horizontal portion is not provided in the inner bottom seal 7 and drainage from the inner bottom seal 7 can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing another embodiment of the present invention.

FIG. 3 is a perspective view showing another embodiment of the present invention.

FIG. 4 is a perspective view showing another embodiment of the present invention.

FIG. 5 is a perspective view showing another embodiment of the present invention.

FIG. 6 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Quadrilateral bag 2 Gazette 3 Top opening 4 Bottom seal 5 Welding part 6 Non-welding part 7 Middle bottom seal 8 Water storage chamber A Bag made of synthetic resin film with gusset B Bag made of synthetic resin film without gusset

Claims (3)

[Claims] 1. A quadrangular bag 1 made of a polyethylene film or other thermoplastic synthetic resin film having or not having a gusset 2 folded inward on both sides is opened at an upper portion 3 and is substantially horizontal over the entire lower width. In a synthetic resin film bag formed by welding a bottom seal 4 that is continuous in the direction, a welded portion 5 that forms an insole in a substantially horizontal direction above the bottom seal 4 with a required gap and a drain hole are formed. A synthetic resin film bag, wherein a water reservoir chamber 8 is formed by welding and forming a discontinuous midsole seal 7 provided with a non-welded portion 6. 2. The synthetic resin film bag according to claim 1, wherein both wings of the welded portion 5 of the midsole seal 7 are formed in a refraction line shape bent obliquely outward and downward. 3. The synthetic resin film bag according to claim 1, wherein the welded portion 5 of the midsole seal 7 is formed in a convex curve shape.