JP2003095278A - Plastic bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic bag, with which the handle of a plastic tank can be securely grasped at carrying the plastic tank or the like which stores liquid, contamination of the surrounding due to the leakage of the content during carrying of the plastic tank or the like can be prevented, and also malodor can be prevented. SOLUTION: The parts of side surfaces of a bag body are folded in and superposed on the side surface, thus forming gussets, which are parallel with the opening of the bag, on the upper half part of the bag body, and the opening is provide with a plastic fastener having a slider.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic bag suitable for containing a liquid container or the like, and more particularly to a plastic bag suitable as an outer bag for a liquid container with a handle or the like.

[0002]

2. Description of the Related Art Conventionally, kerosene for home heating is usually stored in a plastic tank container containing 18 liters. Kerosene is purchased from a gas station or mobile sales vehicle and transported and stored.Because kerosene adheres to the surface of the container during the filling work into the poly tank or leaks from around the cap during transportation, odor is emitted. An outer bag for the tank container is necessary to prevent odors and to prevent contamination of the trunk due to rollover of the tank container when it is carried in a car trunk.

Conventionally, a plastic tank container is placed in a plastic bag such as a garbage bag or a large plastic bag for transportation and storage. However, depending on the size and form of the bag, these plastic bags may be stored. Since the handle portion of the plastic tank container cannot be reliably gripped and only the bottom surface and the side surface of the plastic tank container are covered, it is insufficient for preventing contamination and odor due to the rollover of the tank.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and can reliably grip the handle portion of a plastic tank container or the like for storing a liquid substance, when the container is transported. An object of the present invention is to provide a plastic bag body capable of preventing contamination of the surroundings due to leakage of contents during transportation of a plastic tank container and the like and preventing odor.

[0005]

The plastic bag body according to the present invention has the following features and effects. (1) A gusset portion is provided parallel to the opening in the upper half of the bag body by folding the side surface of the bag body and polymerizing and joining both edge portions (claim 1), and kerosene and other liquids. When a plastic tank container containing items is stored in a plastic bag, the bag body has a gusset on the side,
By pushing the gusset portion into the handle portion such as the tank container, the handle portion can be securely gripped.

(2) A plastic zipper is attached to the upper end opening of the bag body (claim 2), a plastic tank container or the like is housed in the plastic bag body, and the zipper at the opening is closed, whereby the plastic tank container is closed. Even if the contents leak, the surroundings are not contaminated, and the odor of the contents can be prevented.

(3) The plastic chuck is a chuck with a slider (claim 3) and can be opened and closed by the slider.

(4) A gusset portion is formed at the bottom of the bag body (claim 4) to improve the fit of the bottom of the plastic tank container or the like.

(5) A bottom plate is attached to the bottom of the bag body (claim 5) to prevent abrasion of the bottom surface of the bag.

[0010]

1 shows an embodiment of a plastic bag body according to the present invention, FIG. 1 is a perspective view in a flat state, and FIG.
2 is a perspective view of a state in which the bottom is widened, FIG. 3 is a cross-sectional view taken along line XX of FIG. 2, FIG. 4 is a perspective view showing a state in which a poly tank container is housed, and FIG. FIG. 6 is a side view showing a state in which the handle portion of the tank container is held in a state in which is closed.

In the figure, A is a plastic bag and B is a plastic tank container. The basic structure of the plastic bag A is that the side surface 2 of the bag body 1 is folded and both end edges 2 are formed.
A pocket-shaped gusset portion 4 is provided in the upper half of the bag body 1 in parallel with the opening 3 by polymerizing and joining a.
The plastic bag A is used for accommodating stored items from the opening 3, and the stored items are not only the poly tank container B but also a metal or plastic pail container,
In addition to a container such as an 18-gallon can, the shape thereof is not particularly limited so that a container such as a cooking pot having a handle portion on the upper side or the side can be stored. By pushing and holding the gusset portion into the handle portion of the stored item, the handle portion can be held without directly touching the handle portion.

Basically, the material of the bag body 1 is not particularly limited as long as it is a plastic film. As the plastic film, low density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, polyester, polyamide, polyvinyl chloride, polyimide,
A single layer film of polyarylate or the like, or a blend thereof, or a laminated film thereof, or a film obtained by depositing a metal or a metal oxide on the single layer film,
A film obtained by laminating metal foil, non-woven fabric, paper or the like in multiple layers can be used. In any case, when the bag is manufactured by heat sealing, it is necessary to laminate a heat-sealable film such as a polyolefin film on the surface that requires joining.

The opening 3 of the bag body 1 needs to be sealed, and for that purpose, a plastic chuck 5 is suitably attached. The plastic chuck 5 may be a manually operated one in which the chuck portion is simply closed by crushing and the edge portion is pulled to be peeled off to open, but in the embodiment, one with a slider is used. The slider 5a opens and closes. As the plastic chuck with a slider, the plastic chuck with a highly hermetically sealed slider shown in our proposed Japanese Patent No. 2938784 is used.

The bag body 1 is made of one plastic film, and is formed into a bag by heat-sealing the both side edges of the bag body 1 in the vertical direction.
Is folded and heat-sealed in a state where both end edges 2a are superposed. As a result, on both side surfaces of the bag body 1, elongated pocket-shaped gusset portions 4 parallel to the openings 3 are formed.
Is formed. The gusset portion 4 has a folding depth of 70 mm.
It is about 200 mm, and the formation position of the gusset part 4 is set to an optimum position from the upper part to the middle part of the bag body 1 depending on the position of the handle part of the container or the like to be stored. In the embodiment shown in FIG. 3, the gusset portions 4 are provided on both side surfaces of the bag body,
An aspect provided on only one side surface is also one aspect of the present invention. The bottom is suitably formed in the gusset structure 6 so that the bottom of the contained container fits. In addition, when the contents are loaded and carried, the bottom surface may come into contact with the ground and be damaged. A sheet or plate having a friction property may be attached.

EXAMPLE A laminated film obtained by laminating a high-density polyethylene film having a thickness of 20 microns and a linear low-density polyethylene film having a thickness of 40 microns is used, and the upper edge of the bag body 1 having a short side of 520 mm and a long side of 550 mm. The plastic zipper with a slider shown in the above-mentioned Japanese Patent No. 2938784 is attached to the inside of the bag main body 1, and a depth of 100 mm from the opening 3 of the bag body 1 to the inside is 100 mm below the opening 3 of the bag body 1.
The gusset portion 4 having a thickness of 10 mm was formed, and the gusset portion 6 having a folding depth of 100 mm was formed at the bottom of the bag body 1. Also,
In the gusset portion 6, a bottom plate 7 made of a foamed polyethylene sheet having a thickness of 1 mm is attached to the outer surface of the bag body 1 with an adhesive,
A plastic bag A as shown in FIG. 1 was formed.

When using the plastic bag A formed as described above, the plastic chuck 5 is opened by the slider 5a, and the plastic tank container B of kerosene is stored from the opening 3 as shown in FIGS. 4 and 5. Then, the plastic chuck 5 is closed. For transportation, see Figure 5.
As shown in FIG. 4, the four fingers of the hand are put into the gusset portion 6, and the gusset portion 6 is pushed into the handle portion B1 so that the handle portion 6
To hold.

[0017]

According to the plastic bag body of the present invention, when the plastic tank container for kerosene or the like is transported and stored, if the plastic tank container or the like is stored, the plastic bag body has a gusset portion on the side surface. Since it has, it is possible to grip the handle portion of the plastic tank container or the like through the gusset portion,
Since the handle portion is not touched directly, for example, the smell of kerosene does not reach the hand.

In the case where the opening of the bag body is provided with a closing means such as a plastic zipper, the container or the like accommodated can be sealed, so that the surroundings can be prevented from being contaminated even if the contents leak due to the container falling over. It is also possible to prevent the diffusion of the odor of the contents. Further, even in the sealed state, the handle portion of the container or the like can be gripped, and it is most suitable as an outer bag for a container or the like of a container which gives off an odor.

[Brief description of drawings]

FIG. 1 shows an example of a plastic bag according to the present invention,
It is a perspective view made into a flat state.

FIG. 2 is a perspective view of a plastic bag body with a bottom portion opened.

FIG. 3 is a sectional view taken along line XX in FIG.

FIG. 4 is a perspective view showing a state in which a plastic tank container is housed in a transparent state.

FIG. 5 is a side view showing a state where the handle portion of the tank container is held in a state where the plastic tank container is housed and the chuck is closed.

[Explanation of symbols]

A: Plastic bag B: Poly tank container 1: Bag body 2: Side 3: opening 4: Machi part 5: Plastic chuck 6: Gusset part

Continued front page    F-term (reference) 3E064 AB23 BA01 BA16 BA26 BA30                       BA36 BA54 BA60 BB03 BC18                       EA30 FA01 FA04 GA02 HG07                       HM01 HN11                 3E067 AA03 AC20 BA04B BA12C                       BB15B BB15C BB16B BB16C                       BB25C BC03C BC06B EA40                       EB27 FA01 FC01 GB15

Claims (5)

[Claims] 1. A plastic bag body, characterized in that a gusset portion is provided in the upper half of the bag body in parallel with the opening by folding the side surface of the bag body and polymerizing and joining both edge portions. 2. The plastic bag body according to claim 1, wherein a plastic zipper is attached to an upper end opening of the bag body. 3. The plastic bag body according to claim 2, wherein the plastic chuck is a chuck with a slider. 4. The plastic bag body according to claim 1, wherein a gusset portion is formed on a bottom portion of the bag body. 5. The plastic bag body according to claim 4, wherein a bottom plate is attached to a bottom portion of the bag body.