| 摘要 |
PROBLEM TO BE SOLVED: To suppress the extraction of, for example, sulfur content, coloring component, existing gum content, etc., from each layer constituting a hose by forming a barrier layer which is made of synthetic resin material having resistance against gasoline, light gas oil, and kerosene and has a specific film thickness on an inner wall face of an inner pipe rubber layer. SOLUTION: A hose 10 used at a gas station or the like consists of an inner pipe rubber layer 1, a braided reinforcing layer 2, and an outer face rubber layer 3, and nylon resin 4 having a thickness of 10 to 200μis integrally formed on an inner wall face of the inner pipe rubber layer 1. This kind of hose 10 is constituted by applying adhesive after the nylon resin 4 extruded at a predetermined thickness on a mandrel is hardened and forming the inner pipe rubber layer 1 thereon. Next, reinforcing threads are braided 2 to form the outer face rubber layer 3, and the mandrel is pulled out after vulcanization. This kind of hose 10 can eliminate a sulfur content, a coloring component, and existing gum which are extracted from each layer 1 to 3 of the hose 10 and can prevent them from diffusing into the air through constituent layers.
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