B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 1/08 (2006.01) B32B 25/08 (2006.01) B32B 27/12 (2006.01) B32B 27/34 (2006.01) F16L 11/08 (2006.01)
Patent
CA 2265096
The present invention relates to a composite flexible hose, preferably for use in automotive air conditioning systems, with improved thermal resistance. The hose consists of an innermost core layer, a friction rubber layer, an intermediate reinforcement layer, and an external cover layer. The innermost layer is a non-plasticized polyamide mixed with a minor portion of polyolefin corresponding to the main rubber constituent of the friction coat layer. The friction coating is formed of a rubber composite of two EPDM rubbers at a weight ratio of 50/50 and 75 parts by weight of carbon black. The intermediate fibrous reinforcement layer is formed of aramid. The external layer is an acrylate rubber comprising a blend of two ethylene acrylates at a weight ratio of 50/50 and 80 parts by weight of carbon black.
Brown Thomas Alan
Nadkarni Pradeep Dattatraya
Thomas John Patrick
Sim & Mcburney
The Goodyear Tire & Rubber Company
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