Pipes and tubular conduits – Flexible – Distinct layers
Patent
1992-06-11
1997-10-21
Bryant, III, James E.
Pipes and tubular conduits
Flexible
Distinct layers
138140, 138DIG3, 138DIG7, 361215, F16H 1102
Patent
active
056786115
ABSTRACT:
A layered tubing for use in a motor vehicle composed of a thick outer tubing having an inner and an outer face, the outer tubing made of an extrudable thermoplastic such as a polyamide such as Nylon 6; a thin intermediate bonding layer bonded to the inner face of the thick outer layer, the bonding layer composed of an extrudable melt-processible thermoplastic capable of sufficiently permanent laminar adhesion to the polyamide outer tubing; and an inner hydrocarbon barrier layer bonded to the intermediate bonding layer, the inner layer composed of an extrudable, melt processible thermoplastic capable of sufficiently permanent laminar adhesion with the intermediate bonding layer, the thermoplastic containing as a major constituent a fluoroplastic such as polychlorotrifluoroethylene, ethylene tetrafluoroethylene copolymers and the like.
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Mitchell Frank L.
Noone David L.
Bryant III James E.
ITT Corporation
Lewis J. Gordon
Twomey Thomas N.
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