JP2572741Y2 - Hard reinforced spiral flexible tube - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a hard reinforced spiral flexible tube.

[0002]

2. Description of the Related Art In manufacturing a flexible tube requiring abrasion resistance, a rubber material is known as having excellent abrasion resistance, and a trunk portion is made of the rubber material. Although the method has been used for some time, it has heavy and opaque disadvantages.

It has long been known to use a thermoplastic urethane resin for the body of a flexible tube in order to improve abrasion resistance. However, the adhesion between this material and the reinforcing helical portion having high rigidity is poor, and a practically satisfactory one cannot be obtained.
Therefore, the deficiency of the adhesive force is compensated for by wrapping the reinforcing spiral portion with the material.

[0004] However, in this method, the weight increases, the structure is restricted, and if the wrapping portion is damaged, the helical tube may be broken.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a hard reinforced helical flexible tube which is excellent in abrasion resistance, lightweight and inexpensive, eliminating the above-mentioned conventional disadvantages.

[0006]

The means of the present invention are as follows.

The soft body is made of a material of 90% urethane resin, 10% of vinyl chloride resin to 60% of urethane resin, and 40% of vinyl chloride resin. The hard reinforcing spiral is 50% of urethane resin, 50% of vinyl chloride resin to urethane. Resin 2
A hard reinforced helical flexible tube made of a material of 0% and 80% of vinyl chloride resin.

The gist of the present invention is to use a blend material of a urethane resin and a vinyl chloride resin. However, in order to improve rigidity, flexibility and temperature, an acrylic resin, ABS,
A chlorinated polyethylene resin or the like may be added, and a copolymer with vinyl acetate may be mixed with the vinyl chloride resin in an appropriate ratio to improve the adhesiveness.

Table 1 shows a comparison of the adhesive performance of the materials.

[0010]

[Table 1]

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a combination of a material in which the soft body portion 101 is composed of 90% urethane resin and 10% vinyl chloride resin, and the hard reinforcing spiral portion 102 is composed of 20% urethane resin and 80% vinyl chloride resin. The flexible tube A shown was manufactured.

By reducing the thickness of the soft body portion 101, the resilience characteristic of urethane resin can be suppressed as much as possible, and a flexible and flexible tube is obtained.

The mixing ratio of the urethane resin is reduced so that the rigidity of the hardened spiral portion 102 is not reduced as much as possible, and the adhesion to the soft body member can be increased even if the material is broken.

[0014]

[Effect] According to the present invention, a flexible tube having excellent wear resistance, light weight and good workability can be obtained, sand sowing at a golf course where visual inspection of the inside of a hose is required, metal, ceramic powder / slot machine. It is suitable for use of a coin transport hose or the like.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view.

[Explanation of symbols]

 A Flexible tube 101 Soft body 102 Hard reinforced spiral

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B32B 1 / 08,27 / 00-27/42 F16L 9/00-11/18

Claims (1)

(57) [Scope of request for utility model registration] 1. The soft body portion is made of a material of 90% urethane resin, 10% vinyl chloride resin to 60% urethane resin and 40% vinyl chloride resin, and the hard reinforcing spiral portion is 50% urethane resin and 50% vinyl chloride resin. And a hard reinforcing spiral flexible tube made of a material having a ratio of 20% urethane resin and 80% vinyl chloride resin.