JP2632321B2 - Liquid storage bag - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag for storing a liquid, in particular, a liquid storage bag for mounting on a container, a bag for transporting and storing a liquid, and a bag useful as a bag for a water bed. It is about.

2. Description of the Related Art (a) Container-Loading Liquid Storage Bag Conventionally, a container or container dedicated to liquid has been used to transport liquid cargo, and a container dedicated to solid has been used to transport solid cargo.

Therefore, when there is no cargo of the same type on both the outbound route and the return route, either the outward route or the return route is empty, which is extremely uneconomical.

Therefore, in order to eliminate such uneconomics, a liquid storage bag is mounted on the container, the liquid is stored in this bag when transporting liquid cargo, and when transporting to solid cargo, this bag is rounded down to a small size. Proposals have been made to use the space for transporting solid cargo, and it has already been put to practical use.

As such proposals, Japanese Utility Model Application Laid-Open No. 61-3291, Japanese Utility Model Application No. 61-17089, Japanese Utility Model Application Laid-open No. 61-30684, Japanese Utility Model Application
JP-30685, JP-A-61-30686, JP-A-61-38
No. 084, Japanese Utility Model Application Laid-Open No. 61-38085, Japanese Utility Model Application Laid-Open No. 61-48190
JP-A-61-48191, JP-A-61-134996, JP-A-61-188987, JP-A-61-11381, JP-A-61-21376 and the like. .

In each of the above-mentioned publications, there is no particular description about the material of the bag itself, but liquid storage bags currently in practical use are:
According to the catalog, it is made of coated high-strength synthetic fibers, for example, polyester fibers coated with polyurethane.

(B) Containers for transporting and storing drinking water In places where transportation is inconvenient, such as mountain peaks and remote islands, it may be necessary to transport drinking water by air or other means. At this time, the drinking water is usually transported in a large-capacity container.

(C) Water Bed Recently, bedding called a water bed using water as a cushioning material has been developed. This bedding is said to be effective in preventing insomnia, lower back pain and bedsores.

The structure of the water bed is a rubber, plastic or leather bag filled with water of about one drum and housed in a wooden or polyurethane frame.

Problems to be Solved by the Invention (a) Container-Mounted Liquid Storage Bag A conventional container-mounted liquid storage bag is made of a woven fabric coated with polyurethane or the like. In order to manufacture, it is necessary to take means such as sewing or bonding for joining to form a cylindrical body and closing the openings at both ends of the cylindrical body, which complicates the manufacturing process and adds to the joints and the closed portions. May be lower than other parts. Inspection for checking the quality of the joint and the closing part also requires a great deal of labor.

(B) Containers for transporting and storing drinking water Containers for transporting and storing drinking water must be collected after drinking water has been consumed at the destination. Labor and transportation costs. In this case, if the drinking water can be transported and stored in a bag, the drinking water can be rolled up and compact after consumption, and the collection is extremely easy.

(C) Water Bed A water bed using a bag made of rubber, plastic or leather is relatively heavy in the bag itself. However, there are disadvantages as mentioned above.

The present invention has been made in view of such circumstances, and has as its object to provide a liquid storage bag that is light, has a uniform strength, and is easy to manufacture.

Means for Solving the Problems In the liquid containing bag of the present invention, when the single woven tissue zone is A, and the weft double woven tissue zone where the front and back are joined at both edges is B, zone A and zone B are A seamless woven bag (1), which is continuously woven in a state of being adjacent to each other and whose entire configuration is A (BA) _n (where n is a positive integer), (1) is subjected to a liquid permeation preventing treatment by a polymer film, and a liquid introduction / exit port (2) is provided in at least one longitudinal double woven tissue zone B of the seamless woven bag body (1). In addition, an air vent hole (3) is provided in at least one longitudinal double texture zone B of the seamless woven fabric bag (1).

 Hereinafter, the present invention will be described in detail.

The liquid stored in the liquid storage bag includes not only ordinary liquids but also viscous liquids and liquids in which solids are dispersed.

The liquid containing bag of the present invention has
And a seamless woven bag body comprising a repeating unit of a double woven fabric structure zone in which the front and back are joined at both edges and B (1)
Consisting of Both ends are to be zone A.

Zone A and Zone B are woven continuously and adjacent to each other. The overall configuration is A (BA) _n (where n is a positive integer), where A is 1 when n is 1, ABABA when n is 2, and ABABABA when n is 3.

The seamless woven bag body (1) in which n is 1 uses a warp and a weft, first performs a single weave, and then performs a double weave so that the front and back are joined only at both edges, Finally, it is easily manufactured by transitioning to a single weave again.

When n is 2 or more, the seamless woven bag body (1) uses a warp and a weft to perform a single weave first, and then a double weave so that the front and back are joined only at both edges. The following "single weaving" → "weft double weaving" is repeated as many times as necessary, and finally, it is easily manufactured by shifting to single weaving.

Regardless of whether n is 1 or 2 or more, as shown in the example of the manufacturing process in FIG. 5, weaving is performed while repeatedly repeating “single weaving” → “weft double weaving” many times. , N is 1
In the case of, cut at the center of each single weave part, and when n is 2 or more, cut at the center of the single weave, such as every other one every two, if weaving all at once Many seamless fabric bags (1) can be obtained.

For single weaving, weaving means such as twill weaving and satin weaving are employed in addition to plain weaving, and weaving means such as twill weaving and satin weaving are employed for double weaving in addition to plain weaving.

In the above description, weaving double weaving is a seamless (seamless) tube in which an odd number of warp yarns are arranged and two overlapping fabrics are woven to form a tubular shape with the front and back joined at only both edges. How to get. As shown in another example of the manufacturing process in FIG. 6, if a bonding portion is provided in the middle, two or more weft double weave portions can be formed in the weave width direction.

Examples of the warp and weft for weaving the seamless woven bag body (1) include polyester fibers, polyamide fibers (including aramid fibers), acrylic fibers, vinyl alcohol fibers, polyvinylidene chloride fibers, and polychlorinated fibers. Threads made of fibers such as vinyl fibers, polyolefin fibers, polyurethane fibers, fluororesin fibers, semi-synthetic fibers, recycled fibers, natural fibers, carbon fibers, glass fibers, ceramic fibers, and metal fibers are used.

The seamless woven bag body (1) is subjected to a liquid passage preventing process using a polymer film.

Examples of such polymers include polyurethane resins, polyester resins, polyamide resins, polyvinylidene chloride fibers, polyvinyl chloride fibers, polyolefin resins, fluorine resins, silicone resins, polystyrene resins, Cellulose-based polymers, natural or synthetic rubbers and the like can be mentioned.

Among these, polymers that provide a film having elasticity are useful, and typical examples of such elastic polymers include:
Examples thereof include polyurethane elastomers, polyester elastomers, polyamide elastomers, and polyolefin elastomers, with polyurethane elastomers being preferred. The polyurethane elastomer refers to a rubber-like elastic polymer having a urethane group in a molecular structure, and includes an adipate ester type, a polyether type, a caprolactone type, a polycarbonate type and the like.

These polymers are provided for coating in a liquid, solution, dispersion or melt state, and then formed into a film by heating, drying, cooling, irradiation with active energy rays, or the like. In addition, a method of coating the warp and weft yarns before weaving with a polymer, heating and flowing after weaving to close gaps in the fabric structure, and a method of polymerizing monomers on the surface of the seamless fabric bag (1) Etc. can also be adopted.

A liquid inlet / outlet (2) is provided in at least one weft double woven tissue zone B of the seamless woven bag (1). A single inlet / outlet (2) is required when the liquid is introduced and discharged from the same port, and is divided into an inlet (2A) and a discharge port (2B) when separate introduction and discharge are performed.

Further, at least one longitudinal double-textured tissue zone B of the seamless woven bag (1) is provided with an air vent hole (3). When there are two or more liquid inlet / outlets (2),
One of them can be used also as the air vent hole (3).

As an example, when the liquid storage bag of the present invention is used for the purpose of a container mounting liquid storage bag, the inlet (2A) is introduced into a high place at the time of liquid injection, and is guided to a low place at the time of liquid discharge. An outlet (2B) is provided, and if necessary, an air vent hole (3) is provided at a location that is high when the liquid is injected.

When the liquid is to be permanently sealed, the introduction port (2) may be completely sealed after the introduction of the liquid so that the liquid cannot be reopened.

When the liquid storage bag of the present invention is of a multiple type, the same type or different types of liquids can be stored in each chamber (that is, the double weave tissue zone B). It is also possible to communicate between the chambers by appropriate means.

FIG. 1 is a perspective view showing an example when the liquid storage bag of the present invention is a container mounting liquid storage bag.

FIG. 2 is a perspective view showing an example when the liquid storage bag of the present invention is a liquid storage bag for transporting and storing liquid.

FIG. 3 and FIG. 4 are perspective views showing an example when the liquid storage bag of the present invention is a water bed bag.

In the figure, (1) is a seamless woven bag, (2) is an inlet / outlet, (2A) is an inlet, (2B) is an outlet, and (3) is an air vent. A is a single woven fabric texture zone, and B is a weft double woven texture zone.

When the liquid storage bag of the present invention is mounted on, for example, a container to inject liquid, the injection nozzle and the inlet (2) are used.
A) and the air bleeding hole (3)
In between, pour the liquid into the bag.

Then, the injection hose is removed from the injection nozzle, and the liquid is transported. For transportation, it is not necessary to remove the injection hose and the air release hose, but they can be removed.

To drain the liquid from the bag, use the outlet (2
Attach the discharge hose to B) and discharge the liquid with the air vent hole (3) or the inlet (2A) open.

When transporting solid cargo, the bag may be stored in one corner of the container, and the resulting space may be loaded with solid cargo.

EXAMPLES Next, the present invention will be further described with reference to examples.

Example 1 High-density weaving was performed using polyester fiber yarns as warps and wefts, and single-textured woven fabric zones A by plain weaving and double-textured weaving zones B by plain weaving were alternately formed. The weaving width is 2500 mm, the weaving length of the single-textured woven zone A is 200 mm, and the weaving length of the double-textured weaving zone B is 6000 m.
m.

After weaving, the central portion of each single-tissue woven fabric zone A was blown in the weaving width direction. Accordingly, a seamless woven fabric body (1) having a single-woven fabric structure at one end side closed, a double woven fabric structure with an intermediate main body portion joined at both edges by front and back, and a single-woven fabric structure at the other end closed portion is provided. Obtained.

The surface of the seamless woven bag (1) was coated with a solution of an adipate ester type polyurethane elastomer, and dried by heating to form a film for preventing liquid leakage.

Then, the inlet (2A) and the air vent (3) of the intermediate body of the seamless woven bag (1), and the outlet (2)
By providing B), a container-mounting liquid storage bag as shown in FIG. 1 was obtained.

Example 2 High-density weaving was performed using nylon fiber yarns in which aramid fibers were mixed and twisted as warps and wefts, and single-woven fabric zones A by plain weaving and double-weft fabric zones B by plain weave were alternately formed. The weaving width was 1500 mm, the weaving length of the single-textured woven zone A was 200 mm, and the weaving length of the double-textured weaving zone B was 900 mm.

After weaving, the center of the single-tissue woven fabric zone A was cut in the weaving width direction every other one. As a result, a double seamless textile bag (1) was obtained.

The surface of the seamless woven bag (1) was coated with a vinylidene chloride copolymer dispersion and dried by heating to form a film for preventing water leakage.

Next, by providing an inlet (2A) and an air vent (3) on the upper surface of the two intermediate main bodies of the seamless woven fabric bag (1) and an outlet (2B) on the lower surface, as shown in FIG. A liquid storage and storage bag was obtained.

Example 3 Weaving was performed at a high density using nylon fiber yarns coated with uncured polyurethane as the warp and the weft, and single-woven fabric zones A by plain weaving and double-woven fabric zones B by plain weaving were alternately formed. The weaving width was 900 mm, the weaving length of the single-textured woven zone A was 30 mm, and the weaving length of the double-textured weaving zone B was 360 mm.

After weaving, it was placed in five places, and the center of the single-tissue fabric zone A was cut off in the weaving width direction. As a result, a five-piece seamless woven bag body (1) was obtained.

A hole is formed in the intermediate body of the seamless woven bag body (1), and hot air is blown from the hole to expand the bag body (1), thereby hot pressing the bag body (1) to remove the polyurethane covering the warp and the weft. It was allowed to flow to fill the gaps in the fabric structure and was cured at the same time, forming a water leakage prevention coating.

Next, an inlet / outlet (2) is provided on the upper surface of each intermediate body of the seamless woven fabric bag (1), and the hot air blowing hole is formed as an air venting hole (3).
A water bed bag as shown in the figure was obtained.

Example 4 Weaving was performed using polyester fiber yarns as the warp and the weft, and single-woven fabric zones A by plain weaving and double-weft fabric zones B by plain weaving were alternately formed. When forming the double-textured fabric zone B, the sixth
As shown in the figure, a single-tissue woven fabric zone A was formed by providing binding portions at both edges and at three places in the middle.

Single weave fabric zone A formed in weaving width direction after weaving
Was blown in the center. As a result, a quadruple seamless woven fabric bag (1) was obtained.

The surface of the seamless woven bag (1) was coated with a solution of a polyether-type polyurethane-based elastomer, and dried by heating to form a film for preventing liquid leakage.

Next, an inlet / outlet (2) and an air vent (3) not shown in the figure are provided in the intermediate body of the seamless woven bag (1), so that a water bed bag as shown in FIG. Obtained.

Effect of the Invention Since the liquid storage bag of the present invention consists essentially of a seamless woven bag, the whole is homogeneous and the strength of the joints and closures may be reduced as compared with other parts as in the conventional case. Absent.

In addition, there is no need to form a tube by conventional joining, close the openings at both ends, and eliminate the process.This greatly simplifies the manufacturing process, and also includes an inspection process to check the quality of the joint and the closed portion. Omitted or simplified.

If the liquid storage bag is formed in a multi-unit type, for example, when it is used as a container mounting liquid storage bag, even if the car is bent at a sharp angle during transportation, the liquid is biased due to inertia and there is a danger to driving the car. There is no risk of occurrence. Also,
If the bag is formed in a multiple-layered manner, each chamber of the bag can contain a different type of liquid.

In manufacturing the liquid container bag of the present invention, after repeating single weaving → weft double weaving and cutting at the center of the single weaving portion, a large number of seamless woven bag bodies can be obtained at once, so production The properties are significantly increased.

The liquid storage bag of the present invention has a uniform strength as a whole and is excellent in productivity as described above, so that the liquid storage bag to be mounted on a container capable of switching between liquid cargo transport and solid cargo transport is provided. It is extremely useful as a bag for transporting and storing a liquid, a bag for a water bed, and the like, and can be expected to have various uses.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example when the liquid storage bag of the present invention is a container mounting liquid storage bag. FIG. 2 is a perspective view showing an example when the liquid storage bag of the present invention is a liquid storage bag for transporting and storing liquid. FIG. 3 and FIG. 4 are perspective views showing examples when the liquid storage bag of the present invention is a water bed bag. 5 and 6 show an example of a manufacturing process of the liquid storage bag of the present invention. (1)… Seamless woven bag, (2)… Inlet, (2A)… Inlet, (2B)… Outlet, (3)… Air vent hole, A… Single woven tissue zone, B: history double weave texture zone

Claims (1)

(57) [Claims] 1. When a single-woven fabric structure zone is A and a double-weave fabric structure zone having front and back sides joined at both edges is B, continuous weaving is performed in a state where the zones A and B are adjacent to each other. And a seamless woven bag (1) having an overall configuration of A (BA) _n (where n is a positive integer), wherein the seamless woven bag (1) is prevented from passing liquid by a polymer film. The seamless fabric bag (1) is provided with a liquid inlet / outlet (2) in at least one longitudinal double fabric structure zone B of the seamless fabric bag (1);
A liquid storage bag, characterized in that at least one longitudinal double fabric structure zone B of the seamless fabric bag body (1) is provided with an air vent hole (3).