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US 11,680,665 B2Granted
Hose with rubber and plastic
AssigneeEaton Intelligent Power Limited
InventorsAaron David Clark, Gina Theresa Clark
Life of this patent
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Abstract
A hose is provided comprising a rubber backing layer directly bonded to a continuous polyamide layer without an intervening adhesive layer, wherein the hose exhibits increased low and high temperature capability and decreased permeation compared to standard automotive refrigerant hoses.
Claims26
A method of making a hose, comprising:
- coextruding two or more polyamide layers onto a mandrel to form a veneer comprising an inner resistance layer and a polyamide layer;
- blending a first composition comprising an ethylene propylene diene monomer (EPDM), a maleated compound, and a phenylenedimalemide, and extruding the first composition on top of the polyamide layer to form a rubber backing layer;
- applying a reinforcement layer over the rubber backing layer;
- extruding a cover layer over the reinforcement layer to form a green hose;
- vulcanizing the green hose to form a cured hose;
- and
- expelling the cured hose from the mandrel.
4 more elements
Dependencies are inferred from the claim text.