Patent ID: 7849887
Filing Date: 2010-12-14
Classification: F16L,Y10T

Abstract:
1. A refrigerant transportation hose comprising an innermost layer formed by using polyamide resin, an adhesive layer formed on an outer peripheral surface of the polyamide resin of the innermost layer, a low-permeation layer formed on an outer peripheral surface of the adhesive layer and a rubber layer formed on an outer peripheral surface of the low-permeation layer, wherein the low-permeation layer is a resin film in thickness of 5 to 100 μm made of polyvinyl alcohol having a degree of saponification of not less than 90% and wherein the adhesive layer is formed of at least one selected from the group consisting of urethane adhesive, polyester adhesive, isocyanate adhesive, epoxy adhesive and rubber cement adhesive.