JPH09142601A - Trash bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refuse bag, of which bottom surface is reinforced so as to prevent the generation of holes and split in the bottom surface and which has the simple structure and the practical design. SOLUTION: A cylindrical material, which is made of the synthetic resin and of which upper end and lower end are opened, is folded so as to form a flat sheet, and this flat sheet is folded inside from both sides thereof so that the folded both ends are overlapped with each other, and a lower end 6 of the flat sheet, which is folded inside from both sides thereof, is sealed by heating so as to form a a thermal sealed layer 7 so as to form a refuse bag main body 2, and an overlap part is provided at a nearly central part 8 in the lateral direction inside of the thermal sealed layer 7 of the refuse bag main body. At the time of housing the refuse, an upper end of the refuse bag main body is opened so as to be formed into the cylindrical shape, and a bottom surface of the refuse bag main body is formed with a pair of triangle-shaped overlapped parts 10, 10 in both side of a central part of the lower end 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin garbage bag used in households and restaurants.

[0002]

2. Description of the Related Art A garbage bag 21 as shown in FIG. 6 is conventionally known as a garbage bag of this type. A garbage bag main body 22 has a long cylindrical body made of a synthetic resin such as polyethylene or the like. The sheet is folded in the center to form a sheet, and an adhesive layer 23 serving as the bottom surface of the garbage bag is provided at the lower end by means such as heat bonding. Then, after storing the garbage including garbage in the bag through the opening formed at the upper end, the opening of the garbage bag can be closed by connecting the upper end of the garbage bag.

[0003]

By the way, in the above-mentioned garbage bag, when the garbage bag is opened for storing garbage, the garbage bag is opened around the bottom center 24 of the garbage bag. The bottom center 24 is the weakest point on the bottom surface of the garbage bag where the synthetic resin sheet is not folded. When transporting the garbage bag, most of the load on the garbage bag is applied to the bottom surface, so a hole is made in the center 24 of the bottom surface, which is the weakest point on the bottom surface of the garbage bag, and liquid flows out from the hole or the hole becomes larger. There was a disadvantage that the garbage bag was torn and the garbage was scattered.

There is also a garbage bag 31 as shown in FIG. 7. A garbage bag main body 32 is formed by folding a long cylindrical body made of a synthetic resin into a sheet shape, and the bottom surface of the garbage bag is provided at the lower end by means such as heat bonding. When the adhesive layer 33 is provided and then opened to store garbage, the garbage bag is opened about the center 35 at the bottom, and the folded portion 36 having a triangular shape symmetrical with respect to the center 35 at the bottom. 36, 36, 36 are formed. However, the garbage bag 31 also has no folded portion at the bottom center 35, and the bottom center 35 is the weakest point on the bottom surface of the garbage bag, and has a drawback that holes are easily formed.

In general, as the size of a garbage bag increases, the weight applied to the bottom surface of the garbage bag also increases, and the bottom surface tends to be damaged. Must be configured so that there is no Further, as described above, there is a garbage bag reinforced by providing a folded portion on the bottom surface. However, in order to increase the storage capacity of the garbage bag, it is necessary to reduce the number of the folded portion as much as possible. Further, since the upper ends of the garbage bags are connected to each other to close the opening, the capacity of the garbage that can be stored in the garbage bags is considerably reduced. Therefore, in order to increase the storage capacity of garbage, it is inconvenient to prepare a separate string and to open the opening with the string.

Accordingly, an object of the present invention is to provide a garbage bag having a low-cost and simple structure, but having a reinforced bottom surface and a large storage capacity for garbage. Is what you do.

[0007]

The present invention has been made in view of the above-mentioned circumstances, and a cylindrical sheet made of a synthetic resin and having open upper and lower ends is folded into a flat sheet, and the flat sheet is Fold inward from both sides so that the folded both ends are overlapped, and then the lower end of the flat sheet folded inward from both sides is heat-sealed to form a heat-adhesive layer to form a dust bag body. A fold-over portion is provided substantially in the center in the lateral direction within the heat-adhesive layer of the bag body, and at the time of storing dust, the dust bag body has a cylindrical shape with its upper end opened
A garbage bag is characterized in that a pair of triangular folded portions are formed on the bottom surface of the garbage bag body with the center of the lower end as the center. Further, a garbage bag may be characterized in that a lower end of a band-shaped tape made of synthetic resin for closing an opening at an upper end of the garbage bag body is attached near a lower end of the garbage bag body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a garbage bag according to the present invention. As shown in the figure, a garbage bag 1 has a garbage bag body 2 made of a synthetic resin such as polyethylene, and the garbage bag body 2 has an upper opening 3. , A cylindrical side part 4 and a bottom part 5.

FIG. 2 is a sectional view taken along the line II in FIG. 1, and FIG. 3 is an exploded perspective view of a bottom portion in a state where the garbage bag is turned over. As shown in FIGS. 1 to 3, the cylindrical side surface portion 4 is folded inward from both sides to form a sheet, and both side ends of the side surface portion 4 are folded at their tips. The bottom end 6 is heat-sealed to form a heat-adhesion layer 7, and a folded portion is formed at the bottom center 8.

Then, as shown in FIG. 1, when the upper opening 3 is opened for storing dust, the cylindrical side portion 4 is opened around the bottom center 8 and the side folded portions 9, 9 are moved. At the same time, a pair of triangular folded portions 10 and 10 are formed so as to branch off in opposite directions about the bottom center 8.

Therefore, the triangular folded portions 10 and 10 can greatly reinforce the load bearing capacity and the durability of the bottom portion 5, and the folded portion is formed at the center 8 of the bottom portion. There is no weak point such as the bottom center 24 of 21 and the center 35 of the bottom of the garbage bag 31 shown in FIG.
It is possible to reinforce the entire bottom portion 5 of the dust bag 1 to significantly improve load resistance and durability, and to reliably prevent the bottom portion from being punctured or torn.

Further, since only a pair of folded portions are provided on the bottom surface, it is possible to relatively increase the internal volume, that is, the dust storage capacity. Furthermore, the garbage bag according to the present invention has a very simple and practical design and structure, so that it is suitable for mass production, is extremely economical and inexpensive, and is suitable as a garbage bag. In the above-described embodiment, the upper portion of the bottom end 6 of the side surface portion 4 is formed as the heat-deposited layer 7. However, the present invention is not limited to this, and the entire bottom end 6 may be formed as the heat-deposited layer. .

Next, a second embodiment will be described with reference to FIGS. As shown in FIGS. 4 and 5, the garbage bag 11 has the garbage bag main body 2 and the bottom 5 of the garbage bag main body 2.
The lower end 13a of the band-shaped tape 13 made of a synthetic resin such as polyethylene is heat-bonded to the bottom center 8 of the base. Then, as shown in FIG. 5, the opening is opened, trash is stored, the upper end of the band-shaped tape 13 is gripped and wound around the opening of the garbage bag main body 2, and the opening is closed easily and securely. Can be.
Further, since the vicinity of the upper end of the garbage bag main body 2 can be closed by the band-shaped tape 13, the storage capacity of the garbage can be increased as compared with connecting the upper ends of the garbage bag main body to each other.

In the above-described second embodiment, the lower end of the belt-shaped tape is heat-bonded. However, the present invention is not limited to this, and it may be attached by other means such as sticking. Although the lower end is heat-bonded to the center of the bottom of the garbage bag main body, the present invention is not limited to this, and it goes without saying that the lower end may be attached near the lower end of the garbage bag main body.

[0015]

As described above, according to the present invention,
Since a pair of triangular folded parts are formed on the bottom of the dust bag body, the load carrying capacity and durability of the dust bag body can be greatly reinforced, and the dust bag body can be folded in the heat transfer layer at the center in the horizontal direction. Since the portion is provided, there is no weak point at the center of the bottom surface unlike the conventional garbage bag, and it is possible to reliably prevent the hole from being opened or torn at the bottom portion. Further, since the dust bag according to the present invention has an extremely simple and practical design and structure, it is suitable for mass production, is extremely economical and inexpensive, and is suitable as a dust bag. In addition, since the band-shaped tape is attached to the garbage bag main body, the opening at the upper end of the garbage bag main body can be easily and reliably closed, and furthermore, the vicinity of the upper end of the garbage bag main body can be closed by the band-shaped tape. Thus, the storage capacity of the refuse bag can be increased as compared with the case where the upper ends of the refuse bag main body are connected to each other.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a garbage bag according to the present invention.

FIG. 2 is a sectional view taken along the line II shown in FIG.

FIG. 3 is an exploded perspective view of a bottom portion in a state where the garbage bag according to the present invention is turned over.

FIG. 4 is a perspective view showing a second embodiment of the present invention, showing a state in which a lower end of a band-shaped tape is attached to a bottom of a garbage bag main body.

FIG. 5 is a perspective view showing the second embodiment of the present invention, and showing a state in which an opening at the upper end of the garbage bag main body is closed by a band-shaped tape having a lower end attached to the bottom of the garbage bag main body.

FIG. 6 is a perspective view showing a conventional garbage bag.

FIG. 7 is a perspective view showing another example of a conventional garbage bag.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Garbage bag 2 Garbage bag main body 3 Top opening part 4 Cylindrical side surface part 5 Bottom part 6 Bottom end 7 Heat deposition layer 8 Bottom center 9,9 Side fold part 10,10 Triangular fold part 11 Garbage bag 13 Strip tape 13a Lower edge of strip tape

Claims (2)

[Claims] 1. A flat sheet is made by folding a cylindrical body made of synthetic resin and having open upper and lower ends, and the flat sheet is folded inward from both sides so that both folded side edges are folded and overlapped. The lower end of the flat sheet folded inward from both sides is heat-bonded to form a heat-adhesive layer to form a dust bag body, and a folded portion is provided in the heat-seal layer of the dust-bag body at approximately the center in the horizontal direction. When storing waste, the waste bag body is cylindrical with the upper end opened, and the bottom surface of the waste bag body is formed with a pair of triangular folded portions centered on the center of the lower end. bag. 2. The garbage bag according to claim 1, wherein a lower end of a band-shaped tape made of synthetic resin for closing an opening at an upper end of the garbage bag body is attached near a lower end of the garbage bag body. .