JPH0226835Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (Industrial application field) This invention mainly relates to garbage bags used when transporting garbage from supermarkets, shops, corporate offices, and general households. .

(Prior Art and Problems) Conventionally known garbage bags include flat tubes or bags in which one end of a flat tube gusseted on both sides is welded in a straight line to form a bottom seal. In addition, in the case of continuous bags connected with perforated cuts, a string for tying the opening may be attached to a part of the bag, or a part of the bag may be attached to a part of the bag so that the fabric of the bag can be separated into strings. Types with perforations are known.

However, in these known methods, attaching the binding string not only requires a separate string;
The installation process is expensive, raising the cost of the garbage bag, and there is a risk that the attached strings will separate or get tangled.Additionally, the strings are colored to make it easier to identify them as bags. The cost of bags is becoming higher and higher, such as printing on some parts of the bag to indicate the presence of strings.

There are also cases where perforations are made in a part of the fabric of the bag and this is separated from the bag and used as a string, but it is not strong enough to withstand the tensile force of the string, and the user ends up However, separate strings or adhesive tape are used to close the mouth of the garbage bag, which necessitates the expense of extra materials and increases the amount of waste.

On the other hand, it is also possible to use this bag as a continuous bag (usually referred to as a grocery bag) by applying a seal and punching process to the carrying part for taking products home, but the cost of the punching process is high. Not only is it sticky, but when it is wound into a roll, it cannot be rolled up in a good shape because of the punched parts, and it tends to lose its shape.

In addition, when the bags are made into continuous bags, the seals and cuts at the bottom of these bags, including the gusset part, are made in a straight line at right angles to the length direction, and the seals are separated from the cuts. When used as a single bag, each bag has a square bottom, but the gusset part has 3 films.
The film fabric is not used effectively as the layers are stacked one on top of the other.

<Problem to be solved> Therefore, this invention allows continuous bags to be formed by simply changing the shape slightly, without requiring a separate string, and making it possible to form continuous bags as well as individual bags.
There is no problem when rolling continuous bags on rollers.
In addition, after the bag is made into individual bags when used, a strong tie is formed on the bag, making it easy to close the mouth of the bag, and providing a handle for carrying the bag. The purpose is to obtain a continuous bag made of plastic film that can be used in combination.

B. Structure of the invention (means for solving the problem) In order to achieve the above-mentioned problem, this invention has a flat tube made of plastic film with gusset folds on both sides, and a seal portion is formed in the transverse direction on both sides of the bottom. In the gusset bottom seal type bag, the bottom seal has a center seal part formed in the width direction of the bag in the center part where there is no gusset folding part, and the mouth edge of the bag is formed from both ends of the center seal part in the gusset folding part. A gusset seal part is formed which is inclined at 45 degrees in the direction, and the remaining edge at the bottom of the gusset seal part is formed parallel to and close to the gusset seal part. The 45° inclined edges of the gusset folding portions are formed parallel to the gusset seal portions and are each formed with a 45° inclined edge, and a binding seal portion is formed with four films welded together at a position near the tip thereof. It is a sealed type bag with a gusseted bottom on both sides and a tying handle.

<Example> This invention will be explained based on the representative example shown in the drawings.

In Fig. 1, numeral 10 is a bag, and this bag is made of a flat tube formed by an inflation method and has gusset folds 11 on both sides. The two films in the center part 12 are welded to each other by a bottom seal part 13 that is straight in the width direction of the bag 10. An inclined bottom seal portion 15 is formed which is inclined toward the mouth edge so as to reach both side edges 14 of the bag 10 at an angle of 45 degrees with respect to the direction. This inclined bottom sealing part 15 can be used even if the four films of the gazette folding part 11 are sealed together or two
Although the film may be sealed one by one, it is preferable that two films are sealed to form the inclined seal portion 15.

The bottom seal 13 and the remaining end 16 below the inclined seal portion 15 are formed by cutting close to them and parallel to them.

Gazette folding portions 11 that are both sides of the other lip 17
In the part, parallel to the inclined seal part 15
Formed at an angle of 45 degrees, a binding tab 18 is formed in the folded part 11 of the gazette, and a binding seal part 19 with four films welded together is formed on this binding tab 18 at a position near the tip of the binding tab 18. This binding seal part 19 and the valley 20 of the gazette folding part 11
A hole 21 is formed between each portion.

As an example of the method for manufacturing the bag of this invention, the first
As shown by the two-dot chain line in FIG. 2, the opening rim 17 and tying tab 18 of the next bag 10 are positioned at the bottom seal portion 13 and the inclined bottom seal portion 15 of the bag 10 from the longer bag material strip. Then, bags are made one after another.

Alternatively, when the bag is arranged as described above and a continuous bag B with a perforated cut 22 at the remaining end 16 is wound up on a roll and used by a consumer,
Separated from the cut 22, a single bag 10 is formed.

In the example shown in FIG. 1, the binding seal portion 19 has a linear shape that is inclined in the opposite direction to the inclination of this inner edge at the tip of the binding handle 18, but as shown in FIG. This invention is the same even if the four films at the tip of the hand 18 are point-welded.

This binding seal 19 is preferably located closer to the tip of each of the binding tabs 18 in order to facilitate widening the mouth edge 17 of the bag 10.

C. Effect In the bag of this invention, in the gusset folding part 11 of the mouth edge 17, the binding handle 18 is inclined at 45 degrees.
Since the four films are integrated by the binding seal part 19, it becomes a strong binding grip 18,
It is easy to tie when closing the lip, and there is no risk of the film breaking due to the tightening force at this time.

Further, since the binding seal portion 19 is located near the tip of the binding handle 18, the lip 17 of the bag 10 can be opened wide, making it easy to throw garbage and the like into the bag 10.

Moreover, since the inside of this binding tab 18 is formed by tilting the gusset folding part 11 by 45 degrees, holes are formed between each binding seal part 19 and the position of the valley 20 of the left and right gusset folding parts 11. 21 are formed, these holes 21 can be engaged with the protrusions 23 of the garbage bag stand A as shown in FIG. 7, making it easy to use.

It is also possible to tie the edges of individual bags by passing strings through these holes 21.

Furthermore, the hole formed in the tie 18 can be used by engaging the protrusion 23 of the garbage bag stand (FIG. 7) A, so that it can be used in combination with such a garbage bag stand A.

In addition, 1 separated from this continuous bag B in the garbage basket
0 has the gazette folding part 11 at an angle of 45 degrees, so it is easy to set the bag 10 therein, and it fits well when unfolded in a trash can or garbage basket. Since the part that performs the function is formed, there is no need to cut out the fabric of the bag material band at all, the storage capacity of the bag is not reduced, and the bag has a square bottom, which is extremely easy to process, making it possible to adopt the method described above. , The manufacturing cost is low, and there is no waste generation associated with manufacturing and processing.

Furthermore, since the bag 10 of this invention has the above-mentioned shape, when it is made into a continuous bag B that is successively continuous in the depth direction with perforation-like cuts 22,
The 45° inclined tie 18 can be placed at the 45° inclined bending seal portion 14 of the next bag, so that the film fabric can be effectively used as the entire continuous bag 10, and when rolled into a roll. Also, since there are no punched parts anywhere, it is easy to roll and does not lose its shape.

[Brief explanation of drawings]

The drawings show things related to this invention, and FIG. 1 is a plan view of a typical embodiment, and FIG. 2 is a partial plan view showing another embodiment of the binding seal part.
Figure 3 is a perspective view of the bag when it is expanded, Figure 4 is
3 is a bottom perspective view, FIG. 5 is a perspective view of a tied state,
FIG. 6 is a perspective view of a continuous bag rolled into a roll and stored in a box, and FIG. 7 is a perspective view of an example of a garbage bag stand. Main symbols in the diagram: 10...Blank, 11...Gazette folding part, 12...Central part, 13...Bottom seal part, 15...Slanted bottom seal part, 16...Remaining end,
17... Mouth rim, 18... Binding seal portion.

Claims (1)

[Claims for Utility Model Registration] 1. In a double-sided gusseted bottom seal type bag in which a flat tube of plastic film has gusset folds on both sides and a seal portion is formed in the transverse direction at the bottom, the bottom seal is located at the bottom of the gusset fold. A central seal portion is formed in the width direction of the bag, and a gusset seal portion is formed in the gusset folding portion at an angle of 45° toward the mouth edge of the bag from both ends of the central seal portion. The remaining edges at the bottom of the gusset seal part are formed parallel to and close to each other along this gusset seal part, and on the other hand, at the mouth edge of the bag, the gusset fold part is formed parallel to the gusset seal part at an angle of 45 degrees, A gusset bottom seal type bag with tying handles on both sides, characterized in that the 45° inclined edge of the gusset folding part is formed with a tying seal part in which four films are collectively welded at a position near the tip of the gusset folding part. . 2. The double-sided gusseted bottom sealed bag with tying handles as claimed in claim 1, wherein the tying seal portion is formed by point welding the tip end of the 45° inclined edge. 3 The binding seal part reached both sides of the bag from a position slightly closer to the tip than the middle stage of the 45° inclined opening edge.
The bottom sealed bag with a gusset on both sides and a gusset as claimed in claim 1 of the utility model registration claim, characterized in that the bag is formed linearly with an inclination opposite to that of the 45° slanted edge.