JPH09301382A - Bag body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the manufacture with a simple constitution, and at the same time, prevent water content inside a bag from leaking out from broken parts. SOLUTION: This bag body 10 is formed of, e.g. a synthetic resin such as vinyl or polyethylene, or a non-water-permeable base material such as paper, and for this bag body 10, a partitioning part 11 which partitions the inside of the bag body 10 into an upper housing part 13 and a lower water reservoir part 14, is provided by heat-sealing the internal surface of the bag body. On the partitioning part 11, circulating passages 12, which communicate with the top and the bottom parts, and allow the moisture of an article being housed in the housing part 13 to stream down to the water reservoir part 14, are formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag body which is formed of a synthetic resin such as vinyl or polyethylene, or an impermeable base material such as synthetic paper, and has only an upper portion opened.

[0002]

2. Description of the Related Art Generally, bags used for transporting or dumping goods and dust include those made of synthetic resin such as vinyl or polyethylene, or impermeable sheet material such as synthetic paper. As an example thereof, there is a bag body 40 shown in FIG. More specifically, the bag body 40 is manufactured by, for example, forming a water-impermeable sheet material 41 into a tubular shape and heat-welding a bottom portion 42 of the sheet material 41. It is possible to transport to the destination without dropping from the bag.

By the way, when a thin object is mixed in the objects accommodated in the bag 40 (particularly when chopsticks are mixed in the garbage) or the bag is full of the objects. If it becomes, as shown in FIG.
There is a problem that the sheet material 41 may be pierced by 3 or a corner portion of the contained object, and the moisture contained inside leaks out from the ruptured portion to stain the surrounding area.

In order to solve such a problem, there is a storage bag disclosed in, for example, Japanese Utility Model Laid-Open No. 6-72902. That is, as shown in FIG. 5, the accommodation bag 50 disclosed in this publication has a double structure by inserting an inner bag 52 into an outer bag 51 made of a polyethylene sheet and then integrating them. Even when the inner bag 52 is broken by a thin object housed in the bag body 50 by this, moisture leaking from the broken portion is removed from the outer bag 51.
It is possible to prevent the leakage of water to the outside.

[0005]

However, since the above-mentioned storage bag 50 has a double structure composed of two bag bodies 51 and 52, it is made of vinyl, polyethylene or the like as compared with the one having the same capacity. In addition to doubling the amount of material, the material is wasted, and a complicated process for inserting and fitting the two bag bodies 51 and 52 into one body is required, which increases the manufacturing time per unit number of sheets. However, there is a problem that the unit price of the bag increases due to the wasteful material cost and the manufacturing equipment cost for integration.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bag which is easy to manufacture without waste of material and which can prevent moisture contained in the container from leaking to the outside.

[0007]

In order to achieve the above object, a bag body according to the present invention is a bag body formed of a water-impermeable base material and having only an upper portion opened, and a bag body near the bottom portion thereof. Is provided with a partitioning section for partitioning the inside into an upper accommodation section and a lower water storage section, and this partitioning section allows water contained in the storage section to flow down to the water storage section. The flow passage is formed (Claim 1).

According to such a bag body, the partition body divides the bag body into the upper and lower storage portions and the water storage portion, whereby the solid matter is stored in the upper storage portion and the moisture contained in the storage material. Only the water is stored in the lower water reservoir via the flow passage formed in the partition.

With this, even when the thin articles are mixed in the contained items, it is possible to prevent the fine articles from moving downward by the partition section. In particular, when the upper part of the bag is lifted when the disposable chopsticks are mixed in the garbage, the thin chopsticks may move downward relative to each other. There was a fear that the tip of the part would break through the bottom part of the bag body, but the moving direction of the partition part changed when it hits the partition part, and it does not reach the water reservoir part but only reaches the bottom side part of the accommodating part. As a result, breakage of the bag body can be stopped only in the accommodating portion and the water reservoir portion can be prevented from breaking, and the moisture contained in the water reservoir portion does not leak from the fractured portion of the accommodating portion.

Therefore, in the bag body of the present invention, since the inside of the bag body is partitioned by the partition portion to prevent leakage of water, the conventional outer bag and inner bag have a double structure. There is no waste of material as compared with the storage bag of.

Further, in the bag body, it is preferable that the partition portion is formed by heat welding the bag body (claim 2).

According to such a bag body, in addition to the above-mentioned function, the partition portion is formed by heat welding, so that no special material is separately required to form the partition portion and the flow passage. Further, since the partition part and the flow passage can be collectively formed only by heat welding, the bag body can be manufactured easily, and as a result, the conventional manufacturing facility is not particularly changed. Also, the bag of the present invention can be manufactured without significantly changing the conventional manufacturing line. Furthermore, by forming the partition portion, the number of welded portions on the inner surface of the bag is increased, so that the strength of the bottom of the bag can be improved.

Further, in the above bag body, it is preferable that the partition portion has a plurality of stages of at least two stages, and the flow passages formed in the respective partition portions are arranged so as not to vertically overlap each other ( Claim 3).

According to such a bag body, even when the thin material stored in the housing portion passes through the uppermost flow passage, the partition material prevents the thin material from reaching the water reservoir portion and breaking through it. It is possible to prevent the leakage of water to the outside with certainty.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the bag body of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing a bag body 10 according to this embodiment. This bag 10 is
For example, it is made of a synthetic resin such as vinyl or polyethylene, or an impermeable base material such as synthetic paper, and is used for transporting or dumping goods or dust.

In this embodiment, the bag body 10 is formed by molding the above-mentioned water-impermeable sheet material into a tubular shape, and has a bottom portion 10a.
Is heat-welded to form a bag-like shape with only the upper portion opened, and is separated from the bottom portion 10a, that is, upward from the bottom portion 10a by a predetermined distance d and is substantially parallel to the heat-welded portion of the bottom portion 10a. The partition part 11 is formed so that.

The partition portion 11 divides the inside of the bag body 10 into the upper and lower storage portions 13 and the water reservoir portion 14. In this embodiment, cuts are formed at predetermined intervals to form a dotted line or a broken line. By doing so, a large number of flow passages 12 are provided. The flow passage 12 connects the vertically divided storage portion 13 and the water storage portion 14 to each other and allows the water contained in the storage portion 13 to flow down to the water storage portion 14.

In the present embodiment, the width of the flow passage 12 is about 3 mm in order to prevent passage of thin objects such as disposable chopsticks.
Is formed. Further, in this embodiment, the distance d from the bottom portion 10a where the partition portion 11 is provided is set to about 5 cm to 10 cm. However, in the present invention, the width or the distance d of these flow passages 12 is not limited to the above-mentioned numerical values, and the kind and size of the contained object, the amount of water contained in the contained object, or the size of the bag body 10. It can be set as appropriate based on the mode of use.

Further, the partition portion 11 and the flow passage 12 are
In the present embodiment, the inner surface of the bag body 10 is collectively welded by heat welding in a dotted line shape or a broken line shape. That is, the partition portion 11 is formed by sandwiching the bag body 10 from the outside with a heated heat sealing machine, melting the base material of the bag body 10 in a dotted line or a broken line, and adhering the inner surfaces of the bag body 10 to each other. However, the non-welded portion of this becomes the flow passage 12.

Then, when, for example, dust is stored in the bag body 10 having such a structure, as shown in FIG.
The solid matter contained in the dust will be accommodated in the upper accommodation portion 13, and only the moisture contained in the dust will flow downward through the flow passage 12 formed in the partition portion 11, and the water reservoir portion in the lower portion. It is housed in 14.

Therefore, as shown in FIG. 2B, for example, when the upper part of the bag 10 is lifted in a state where the inside of the bag is fully filled with dust, when chopsticks are mixed, , Split chopsticks, which are thin objects, may move downward relative to each other. At this time, the tip of the disposable chopsticks might break through the bottom of the bag body 10 without the partition section 11, but the moving direction of the split chopstick changed to reach the water storage section 14 without reaching the water storage section 14. It only reaches the bottom side of 13. As a result, it is possible to stop only the storage portion 13 where the thin material is broken, and the water stored in the water reservoir 14 does not leak from the broken portion.

In particular, the bag body 10 of this embodiment has the partition portion 1
Since 1 is formed by heat welding, it is easy to manufacture and does not require any special material for forming the partition portion 11 and the flow passage 12.

Further, in the bag body 10 of this embodiment, since the bottom portion 10a of the bag body 10 is formed by heat welding, and the partition portion 11 and the flow passage 12 are also formed by heat welding,
When manufacturing the bag body 10, the bottom portion 1 which has been conventionally performed
It is only necessary to add a manufacturing process similar to the work of heat welding 0a. Therefore, the manufacturing equipment for the bag body 10 can be obtained without significantly changing the conventional manufacturing equipment or manufacturing line for the bag body.

Further, in this case, since the bottom portion 10a and the partition portion 11 are both formed by the common process of heat welding, the adhesion strength of the bottom portion 10a and the partition portion 11 can be made equal.

Next, the second embodiment of the bag body of the present invention will be described in detail. The gist of the present embodiment resides in that the partition portions 11 in the above-described embodiment are provided in at least two stages.

That is, the bag body 30 according to the present embodiment.
As shown in FIG. 3, the partition part 1 in the above-described embodiment.
Partitioning parts having the same configuration as that of No. 1 are provided in upper and lower two stages. Specifically, in the vicinity of the bottom of the bag body 30, the inner surface of the bag body 30 is heat-welded in a dotted line or a broken line to form a lower partition 31.
The upper partition 32 is formed above the lower partition 31 in the same manner as above. Then, the inside of the bag body 30 is partitioned into a storage portion 35 and a water storage portion 36 by the upper and lower partition portions 31 and 32.

Further, the non-welded portions of the upper and lower partition portions 31 and 32 become the flow passages 33 and 34 as in the above-described embodiment, and in this embodiment, the flow passages 33 and 34 formed above and below are formed. They are arranged so that they do not overlap with each other. That is, as shown in the figure, the welding portion of the lower partition portion 31 is formed below the flow passage 34 of the upper partition portion 32.

In the present embodiment, the partition portions are formed in upper and lower two stages, but the present invention is not limited to this and can be provided in three or more stages.

According to such a bag body 30, as in the above-described embodiment, the inside of the bag body 30 is vertically divided by the partition portions 31 and 32, so that the solid matter is accommodated in the accommodation portion 35. The water in the dust can be separated and stored in the water reservoir 36 through the flow passages 33 and 34.

Particularly, in the bag body 30 according to this embodiment,
Since the partition parts are provided in the upper and lower two stages, the thin objects 37 mixed in the dust accommodated in the bag body accommodating part 35 are in the upper part of the partition part 3.
Even when passing through the second flow passage 34, the fine object 37 remains in the water reservoir 36.
Can be suppressed by the partition portion 31,
It is possible to prevent the water reservoir 36 from being pierced by the thin object 37.

Further, in this embodiment, since the flow passages 33 and 34 of the upper and lower partition portions 31 and 32 are arranged so as not to vertically overlap with each other, the width of the flow passages 33 and 34 is 3 mm in the above-mentioned embodiment. It can be made larger than that of the above-described embodiment, and it is possible to promote the flow of water from the accommodating portion 35 to the water reservoir 36 as compared with the above-described embodiment.

In each of the above-described embodiments, the partition and the flow passage are formed by heat-welding the inner surface of the bag in the shape of a dotted line or a broken line, but the present invention is not limited to this. It is also possible to adhere the member having the flow passage previously formed therein to the inner surface of the bag as a partition portion.

[0033]

As described above, according to the bag of the present invention, a partition is provided near the bottom of the bag to partition the interior into an upper storage part and a lower water storage part, and the partition is vertically distributed. Since the flow passage is formed, the solid material can be stored in the upper storage portion and the water can be stored in the water reservoir portion by flowing down the water through the flow passage formed in the partition portion.

Therefore, when the contents contain small objects, particularly when the upper part of the bag is lifted when the chopsticks are mixed in the garbage, Some chopsticks may move relatively downwards, but without the partition, the tip of the chopstick could break through the bottom of the bag, but the moving direction changes when it hits the partition. It does not reach the water reservoir, but only reaches the bottom side of the container.

As a result, it is possible to prevent the bag body from being broken only by the accommodating portion due to the thin objects mixed in the container.
Even if the housing portion is broken, the water contained in the water reservoir does not leak from the broken portion. Therefore, compared to the conventional accommodating bag having a double structure, the material is not wasted, and the leakage of water can be effectively prevented.

Further, in the above bag, if the partition is formed by heat-welding the inner surface of the bag, the partition can be formed without requiring any special material. Further, since the partition and the flow passage can be collectively formed only by heat-welding the inner surface of the bag body, the bag body can be easily manufactured, and the conventional bag body manufacturing facility can be significantly changed. Therefore, the bag of the present invention can be manufactured, and the equipment cost can be reduced. As a result, the unit price of the bag can be reduced.

In addition, since the number of welded portions on the inner surface of the bag can be increased to form the partition, the breaking strength of the bottom of the bag can be improved. Further, during the production of the bag body, the heat welding of the partition portion can be performed by the same process as the heat welding for forming the bottom portion of the bag body. In this case, the adhesive strength of the partition portion is set to the adhesive strength of the bottom portion. Can be equivalent to

Further, in the above bag, if the partition portions are provided in a plurality of stages of at least two stages and the respective flow passages formed in these partition portions are arranged so as not to vertically overlap with each other, they are accommodated in the accommodating portion. It can be suppressed by the lower partitioning part that the narrowed material which has passed through the flow passage of the uppermost partitioning part reaches the water reservoir part, and as a result, the water reservoir part is not broken by the thinning material. It can be surely prevented.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a first embodiment of a bag body of the present invention.

FIG. 2 is an explanatory view showing a usage state of the bag body according to the first embodiment.

FIG. 3 is an explanatory view showing a second embodiment of the bag body of the present invention.

FIG. 4 is an explanatory view showing a conventional bag body.

FIG. 5 is an explanatory view showing a conventional accommodation bag.

[Explanation of symbols]

 10 bag body 11, 31, 32 partition part 12, 33, 34 flow passage 13, 35 accommodating part 14, 36 water reservoir part

Claims (3)

[Claims] 1. A bag body which is made of a water-impermeable base material and has only an upper portion opened, and a partition portion for partitioning the inside into an upper housing portion and a lower water reservoir portion is provided near the bottom portion of the bag body. The bag body is provided, and a flow passage is formed in the partition portion to allow the water contained in the storage portion to flow down to the water storage portion. 2. The bag body according to claim 1, wherein the partition portion is formed by heat welding the bag body. 3. The partition part has a plurality of stages of at least two stages, and the flow passages formed in each partition part are arranged so as not to vertically overlap with each other. The bag according to item 2.