HOSE FOR CONVEYING REFRIGERANT
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United States of America Patent
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Issued Date -
Sep 19, 2024
app pub date -
May 31, 2022
filing date -
Jul 29, 2021
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Abstract
A hose for conveying a refrigerant, having an inner surface layer that includes a thermoplastic resin composition with a sea-island structure or a thermoplastic resin, an outer surface layer that includes a thermoplastic resin composition having a sea-island structure, and a reinforcing layer. An oxygen permeability coefficient at a temperature of 21° C. and a relative humidity of 50% of the thermoplastic resin composition or the thermoplastic resin of the inner surface layer is 0.05 cm3·mm/(m2·day·mmHg) or less. A water vapor permeability coefficient at a temperature of 60° C. and a relative humidity of 100% of the thermoplastic resin composition of the outer surface layer being is 10.0 g·mm/(m2·24 h) or less. The reinforcing layer includes an organic fiber with an inclination angle of 49° or more and 61° or less.
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