JPS6217484A - Hose for gas - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an inner layer made of synthetic rubber and a vinyl chloride-based TP.
This invention relates to a gas hose having an outer layer made of E.

[Conventional technology]

Conventionally, a synthetic rubber inner layer was used to prevent it from coming off from hooks, etc., and a vinyl chloride TPE (thermo plastic elastomer) was used to make it difficult to color.
The front and outer layers were bonded together using an adhesive such as Frethane.

[Problem that the invention seeks to solve]

However, the bonding strength between the inner layer and the outer layer is relatively low, and in applications where there is severe deformation such as bending and stretching, such as when used for home gas appliances, durability and safety are insufficient, and even worse. Improvements were desired.

An object of the present invention is to increase the bonding strength between the inner layer, which makes it difficult to come off from a cock, etc., and the outer layer, which allows coloring, to be sufficient for applications that involve severe deformation such as bending and stretching.

[Rounding method to solve problems]

The characteristic structure of the present invention is that an intermediate layer made of synthetic rubber containing vinyl monochloride is provided between an inner layer made of synthetic rubber and an outer layer made of vinyl chloride TPE, the inner layer and the intermediate layer are vulcanized and bonded, and the outer layer and the intermediate layer are bonded together with an adhesive, and its effects are as follows.

[For production]

In other words, according to the method specified in JIS KIJo/ (vulcanized rubber physical test method) 2, peeling test, the present invention 11
As a result of measuring the adhesive strength of the hose according to No. 1 and the conventional hose described above, the adhesive strength of the conventional hose was about "I/R, sm", while the adhesive strength of the hose of the present invention was 5 to 76K.
It was found that an adhesive strength as high as 100% was obtained.

(Effects of the invention) As a result, sufficient durability and safety can be ensured even in applications that involve severe deformation such as bending and stretching, and in particular, it does not easily come off from cocks or equipment, has excellent aesthetics, and is also durable and safe. We are now able to provide excellent hoses for household gas appliances, which require excellent performance.

〔Example〕

Next, examples will be shown.

(Example 1) As shown in Figure 1 (a), a cylindrical inner layer (1) made of synthetic rubber and a cylindrical middle layer (2) made of synthetic rubber containing vinyl chloride are vulcanized and bonded over the entire surface. Then, the outer layer (3) made of vinyl chloride TPE is bonded to the intermediate layer (2) with an adhesive (4) such as Frethane, and the outer layer (3) is appropriately colored to form a gas hose. There is.

(Example 2) As shown in Figure 1 (B), in addition to the same structure as in Example 1, a mesh-like reinforcing layer (5) made of plus plated wire, rayon, or other suitable material is added. , inner layer il
It is provided between the + and intermediate layer (2) to form a colored gas hose containing a reinforcing material.

(Example 8) As shown in FIG. (5) is provided to form a colored gas hose containing a reinforcing material.

Next, the materials of Examples 1 to 8 will be explained.

The synthetic rubber forming the inner layer fi+ is, for example, styrene.
Selected from pucdiene rubber, ethylene propylene rubber, taloloprene rubber, nitrile butadiene rubber, talolosulfonated polyethylene, epichlorohydrin rubber, mixtures thereof, and other suitable rubbers.

The material forming the intermediate layer (2) may be any synthetic rubber containing vinyl chloride; for example, the material shown in the table below can be used.

The vinyl chloride yarn TPEa forming the outer layer (3), e.g.
Sumiflex, Sumicon VM/J10 series (product names manufactured by Sumitomo Bakelite), Sunbren (product name manufactured by Mitsubishi Monsanto Kasei), Elaslit (product name manufactured by Chisso), Aron Elasto (product name manufactured by Toagosei Chemical Co., Ltd.)
, EZ-100゜TK-VJOθ (trade names manufactured by Shin-Etsu Chemical Co., Ltd.), XEL (trade names manufactured by Kanekabuchi Chemical Co., Ltd.), Vinicon G1 Denkareomer G (trade names manufactured by Denki Kagaku Kogyo Co., Ltd.)
, Leonyl (trade name manufactured by Riken Vinyl Industries), and other suitable ones.

[Another example]

Next, another embodiment will be described.

The cross-sectional shape of the hose can be changed appropriately, for example, as shown in Figure 2 (
b) As shown in K, the surface of the outer layer +3) is formed into an uneven shape, and as shown in Figure 2 (b), the inner layer fl+ and the intermediate layer (
2) may be formed into an elliptical shape, and the outer layer (3) may be formed into a rectangular shape with the corners cut off.

[Brief explanation of drawings]

FIGS. 1(A) to 1(C) are conceptual diagrams showing different embodiments of the present invention, and FIGS. 2(A) and 2(B) are sectional views showing different embodiments of the present invention. +1+・・・Inner layer, (2:・・・Middle layer,
(3+...Outer layer, (4)...Adhesive. Agent: Patent Attorney Osamu Kitamura Figure 1

Claims (1)

[Claims] Inner layer (1) made of synthetic rubber and vinyl chloride TPE
A gas hose having an outer layer (3) made of
1) and an intermediate layer (2) are vulcanized and bonded, and the outer layer (3) and the intermediate layer (2) are bonded with an adhesive (4).