Method of Manufacturing Marine Hose and Marine Hose

Patent metadata

Field	Value
Publication number	US-2017043531-A1
Application number	US-201515306748-A
Country	US
Kind code	A1
Filing date	Apr 21, 2015
Priority date	Apr 25, 2014
Publication date	Feb 16, 2017
Grant date	—

Abstract

A method of manufacturing a marine hose that at least a base hose, a sponge layer, a foam rubber layer, and a cover rubber layer. The method comprises the steps of: wrapping a sponge layer around the outside of the base hose; wrapping a foam rubber layer around the outside of the sponge layer, the foam rubber layer containing an unvulcanized foam rubber composition; wrapping a cover rubber layer around the outside of the foam rubber layer; and vulcanizing the wrapped assembly; wherein the foam rubber composition includes a rubber component containing as a main component at least one selected from the group consisting of natural rubber, styrene butadiene rubber, chloroprene rubber, ethylene propylene rubber, ethylene propylene diene rubber, and reclaimed rubber.

First claim

1 . A method of manufacturing a marine hose that includes at least a base hose, a sponge layer, a foam rubber layer, and a cover rubber layer, the method comprising the steps of:
wrapping a sponge layer (A) around the outside of the base hose; wrapping a foam rubber layer (B) around the outside of the sponge layer (A), the foam rubber layer (B) containing an unvulcanized foam rubber composition; wrapping a cover rubber layer around the outside of the foam rubber layer (B); and vulcanizing the wrapped assembly; wherein the foam rubber composition includes a rubber component containing as a main component at least one selected from the group consisting of natural rubber, styrene butadiene rubber, chloroprene rubber, ethylene propylene rubber, ethylene propylene diene rubber, and reclaimed rubber; and, per 100 parts by mass of the rubber component, from 1.1 to 50 parts by mass of a blowing agent and from 1.1 to 50 parts by mass of a blowing aid; and a blow ratio of the foam rubber composition after vulcanization is 1.1 or greater.

2 . The method of manufacturing a marine hose according to claim 1 , further comprising wrapping a foam rubber layer (C) around the outside of the base hose prior to wrapping the sponge layer (A), the foam rubber layer (C) containing an unvulcanized foam rubber composition.

3 . The method of manufacturing a marine hose according to claim 1 , further comprising wrapping another sponge layer (B) around the outside of the sponge layer (A) prior to wrapping the foam rubber layer (B).

4 . The method of manufacturing a marine hose according to claim 1 , wherein the blowing agent is at least one selected from the group consisting of an azo compound, a nitroso compound, a sulfonyl hydrazide compound, an azide compound, and an inorganic blowing agent.

5 . A marine hose manufactured by the method of manufacturing a marine hose according to claim 1 .

6 . The method of manufacturing a marine hose according to claim 2 , further comprising wrapping another sponge layer (B) around the outside of the sponge layer (A) prior to wrapping the foam rubber layer (B).

7 . The method of manufacturing a marine hose according to claim 6 , wherein the blowing agent is at least one selected from the group consisting of an azo compound, a nitroso compound, a sulfonyl hydrazide compound, an azide compound, and an inorganic blowing agent.

8 . A marine hose manufactured by the method of manufacturing a marine hose according to claim 7 .

Assignees

• Yokohama Rubber Co Ltd

Inventors

• Morita Tomohiro

Classifications

• B32B25/14

  comprising {synthetic rubber copolymers (B32B25/18 and B32B25/20 take precedence)} · CPC title

• F16L11/133

  buoyant · CPC title

• B29C66/73752 Primary

  the to-be-joined areas of both parts to be joined being uncured · CPC title

• B29K2607/00

  Use of natural rubber for preformed parts, e.g. for inserts · CPC title

• B32B1/08

  Tubular products · CPC title