JPH0227271Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spirally wound hose having a laminate made of synthetic resin film, cloth, etc.

[Prior art]

Conventionally, spirally wound laminate hoses are made by sequentially wrapping or covering the outer periphery of a spirally wound wire with polypropylene cloth, a polypropylene resin sheet, and a polypropylene resin tube, and then layering polyvinyl chloride on top. It is known that a coated cloth is wound around the outer periphery of the coated cloth, and a spiral wire is further wound around the outer periphery of the coated cloth.

However, when manufacturing this type of spirally wound hose, the air in the laminate cannot be completely removed, and the laminate is wound loosely, resulting in poor durability and pressure resistance.

[Purpose of invention]

In view of the above-mentioned points, the present invention provides a spirally wound laminate hose that ensures air removal and improves the durability and pressure resistance of the hose itself.

[Structure of the invention] In order to achieve the above object, the present invention provides a hose in which a metal wire is wound spirally around the inner and outer peripheries of a laminate of synthetic resin film, cloth, etc. A synthetic resin cord for air release is wrapped in a spiral shape.

〔Example〕

An embodiment of the present invention will be described below based on the drawings. On a spirally wound iron wire 1, polypropylene plain woven cloths 2 and 3 are wound alternately on the left and right, and are wound in two layers. There is.

Furthermore, polypropylene films 4 and 5 are placed on top of this.
are wound in a spiral pattern alternately, for example, left-handed and right-handed. Then, a tube 6 made of polypropylene or the like is placed over this in a cylindrical shape, and a polypropylene film 7 is further wrapped around it.

In this embodiment, after winding the films 4 and 5, the tube 6 is covered, and the film 7 is also wound thereon. However, if necessary, the films are sequentially wound left and right alternately, and the tube is covered in appropriate layers, and then the film is further wrapped. It may be wound an appropriate number of times.

Then, a polypropylene cord 8 is wound spirally on top of the cloth 2, 3, the films 4, 5, 7, and the air between the tubes 6 covered in a cylindrical shape between the wound film layers. It is extracted and formed into a tight laminate.

Further, cloths 9 and 10 coated with polyvinyl chloride resin are further wound spirally on the left and right sides to cover this, and furthermore, an iron wire 11 is wound spirally on this. 12 is a mandrel.

In this case, the iron wires 1 and 11 may be galvanized iron wires coated with polypropylene resin, and in this case, they will also have excellent chemical resistance.

Although polypropylene films and cords were used in the above embodiments, other synthetic resin films and cords may be used depending on the purpose, and other metal wires may be used instead of iron wires. good.

[Effect of idea]

As described above, in this invention, the synthetic resin cord is wound spirally around the synthetic resin film laminate that makes up the hose, and the air inside is reliably removed.The laminate becomes tight and has excellent durability and pressure resistance. It is superior in terms of performance than ever before. In addition, if the hose is exposed to seawater or used underwater, even if the outer spirally wound steel wire breaks, the inner synthetic resin cord maintains its strength and prevents rupture and leakage.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional front view of a spirally wound laminate hose according to an embodiment of the present invention, and FIG. 2 is a perspective view of the hose with each layer removed. 1 and 11 are iron wires, 2 and 3 are polypropylene plain woven cloth, 4, 5 and 7 are polypropylene films,
6 is a polypropylene tube, 8 is a polypropylene cord, and 9 and 10 are cloth coated with polyvinyl chloride resin.

Claims (1)

[Scope of utility model registration request] In a hose in which a metal wire is wound spirally around the inner and outer peripheries of a laminate of synthetic resin film, cloth, etc., a synthetic resin cord for air release is wound spirally around the outer periphery of the top layer of synthetic resin film. Spiral-wound laminate hose featuring: