Refrigerant transportation hose

Details Refrigerant transportation hose Refrigerant transportation hose

2007-05-31

2010-12-14

Hook, James F (Department: 3754)

Pipes and tubular conduits

Flexible

Distinct layers

C138S126000, C138S141000, C428S036910

Reexamination Certificate

active

07849887

ABSTRACT:
A refrigerant transportation hose having excellent flexibility and high resistance to permeation of refrigerant. The refrigerant transportation hose includes an innermost layer formed by using polyamide resin, a low-permeation layer formed on an outer peripheral surface of the innermost layer and rubber layers (of an inner rubber layer and an outer 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%.

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