JPH0577879A - Storing bag for liquid transportation - Google Patents

Abstract

PURPOSE:To provide a storing bag for liquid transportation which can be molded for a short time, even if a flexible bag body is made of sailcloth which is coated with silicone rubber on the surface of a core reinforcing layer, and which is made to be easy to repair and improved in the quality. CONSTITUTION:A bottomed bag body 1 which is shaped in a cylinder and has an inlet and outlet 4 for liquid is made of sailcloth which is coated with silicone rubber 7 on the surface of a core reinforcing layer 6. A cylindrical body 2 of the bag body 1, a joint part 12 of a bottom part and a connection part 11 of the inlet and outlet 4 are made of silicone based adhesive 13 of curing type at normal temperatures.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid-storing storage bag, and more particularly, to an adhesive used for joining and connecting a flexible bag for transporting liquid such as drinking water and milk. It is about.

[0002]

2. Description of the Related Art Conventionally, food products are often distant from their production areas and consumption areas, and they are often shipped refrigerated to preserve their freshness. For example, for liquid foods such as milk and soy sauce, a dedicated tank truck is used, and a large amount of them are transported. However, in the case of the tank lorry vehicle, the transportation is only one way, and there is a lot of waste because the one way that is the return path is empty, so instead of the tank lorry vehicle, a regular truck or other transportation vehicle is used. It is used to transport liquid such as milk enclosed in a rubber or resin bottomed cylindrical bag body, and on the return flight, the bag body is folded so that the luggage compartment of the transportation vehicle can be effectively used. .

[0003]

By the way, in the conventional liquid transport bag, a canvas made by coating the surface of the core reinforcing layer with silicone rubber is used.
They are joined together to form a drum can-shaped bag. However, the commonly used organic peroxide-vulcanized silicone rubber requires primary vulcanization and secondary vulcanization, and requires a vulcanization time of about 12 hours, thus improving workability and productivity. Is extremely bad. There is also an addition type liquid silicone rubber, but addition type liquid silicone rubber requires a fresh atmosphere for vulcanization, and if impurities such as amine and sulfur come into contact with the vulcanization, vulcanization does not take place and However, there is a problem that the quality of the product cannot be judged from the above. Further, since a long vulcanization time is required as described above, there is a problem that if the bag body is damaged, the repair work requires a lot of trouble and time.

[0004]

The present invention has been devised in view of the above-mentioned conventional problems, and is flexible by using a canvas formed by coating the surface of the core reinforcing layer with silicone rubber. An object of the present invention is to provide a storage bag for liquid transportation, which can be formed without requiring a long time even when forming a bag body having the above-mentioned structure, facilitates repair work, and can improve product quality. To do.

In order to achieve the above object, the present invention comprises a bottomed cylindrical bag having a liquid pouring / discharging port made of a sail cloth whose surface is covered with silicone rubber. The gist of the present invention is that a room temperature vulcanizing type silicone adhesive is used for the tubular body portion of the bag, the joint portion of the bottom portion, and the connection portion of the injection and discharge ports.

[0006]

The present invention is constructed as described above, and by using a room temperature vulcanizing type silicone adhesive, it is possible to efficiently manufacture without requiring a long vulcanizing time as in the prior art. The repair work is easy and the quality accuracy can be improved.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a front view of a foldable bag body 1 embodying the present invention. The bag body 1 is fitted into a cylindrical body portion 2 having a bottomed cylindrical shape and an upper opening portion thereof. A lid member 3 is provided, a pouring and discharging port 4 for injecting and discharging a liquid is provided on the lower side surface of the cylindrical body 2, and an air venting / sampling hole is provided on the upper surface of the lid member 3. 5 are provided.

The tubular body portion 2 of the bag body 1 is a core body in which the bag body 1 is made to stand by itself when a liquid is injected from the pouring / discharging port 4 and the extension is minimized for protection during transportation. A reinforcing layer 6 is provided, and aramid fibers, wires, glass fiber polyester, nylon, etc. are used on the surface of the core reinforcing layer 6, but the elongation at break is 10 to prevent deformation.
%, And a lightweight aramid fiber is more preferable. These materials are used to fabricate plain weave, satin weave, twill weave, bucket weave and the like.

[0009] Further, a central body portion of the outer peripheral surface of the tubular body portion 2 of the bag body 1, a reinforcing band 8 for fixing a vehicle in the lower portion thereof, and the tubular body portion 2 are removed by the weight of the liquid (head pressure). A swelling prevention band 9 is wound to prevent swelling in the direction. Furthermore, the pouring / discharging port 4 provided on the bottom side of the tubular body 2 is
As shown in FIG. 2, when the liquid is injected from the outside, it serves as a connecting portion, so that it is reinforced with a rigidity higher than that of the tubular body portion 2. In this embodiment, the core body reinforcing layer is used. 6 and silicone rubber 7 are formed into two layers, and a tightening ring 10 is attached to the outer peripheral surface thereof.

Next, in the case of manufacturing the bag body 1 having the above-described structure, as shown in FIG. 2, the joining portion 11 in which the canvas of the tubular body portion 2 of the bag body 1 is polymerized, and FIG. By using a room temperature vulcanizing type silicone adhesive 13 for the connecting portion 12 of the canvas of the note and discharge port 4 shown in Fig. 3, it can be easily adhered, and the adhesive force is 80% of the adhesive strength as compared with vulcanizing adhesion. You can get power. In addition, the work time can be shortened because there is no peeling even if it is bonded using the silicone-based adhesive 13 or moved about 1 hour after bonding.

As the room temperature vulcanizing type silicone-based adhesive 13, for example, a condensation type liquid silicone rubber is used. Due to its curing (vulcanizing) mechanism, acetic acid type, alcohol type, oxime type, amide type, aminooxy are used. Type, acetone type, etc. Among these, acetic acid type, alcohol type, and oxime type are suitable for the canvas covered with silicone rubber.

As described above, the surface of the core reinforcing layer 6 is coated with the silicone rubber 7 to form a canvas, and the canvas is formed into a drum can bag using the room temperature vulcanizing type silicone adhesive 13. Since the body 1 is configured, the conventional dedicated vulcanization equipment is not required, and the adhesive strength and the adhesive strength that are almost the same as those of the vulcanization adhesion can be achieved in a short time, and the workability and the productivity are remarkably improved. It is a thing.

[0013]

As described above, according to the present invention, a bottomed cylindrical bag having a liquid pouring / discharging port is constructed by using a canvas formed by coating the surface of the core reinforcing layer with silicone rubber as described above. Since the room temperature vulcanizing type silicone adhesive is used for the tubular body of the bag, the joint of the bottom, and the connection of the injection and discharge ports, the bag can be formed in a short time, and repair work is also possible. In addition to being easy, there is an effect that the quality of the product can be improved.

[Brief description of drawings]

FIG. 1 is a front view of a foldable bag body embodying the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an enlarged cross-sectional view of a pouring / discharging port provided on the bottom side of the tubular body.

[Explanation of symbols]

1 bag 2 tubular body 4
Note, outlet 6 Core reinforcement layer 7 Silicone rubber 11
Bonding part 12 Connection part 13 Room temperature vulcanizing type silicone adhesive

Claims (1)

[Claims] 1. A bottomed cylindrical bag having a liquid pouring and discharging port is constituted by a canvas formed by coating the surface of a core reinforcing layer with silicone rubber, and a cylindrical body portion of the bag, A storage bag for liquid transportation, characterized in that a room temperature vulcanizing type silicone adhesive is used for the joint part of the bottom part and the connection part of the injection and discharge ports.