초록 ▼

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 l

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.

대표청구항 ▼

A layered tubing for use in a motor vehicle, the tubing comprising: a thick flexible outer layer having an inner and an outer face, the outer layer consisting essentially of an extrudable thermoplastic 6-carbon block polyamide having an elongation value of at least 150% and an ability to withstand i

A layered tubing for use in a motor vehicle, the tubing comprising: a thick flexible outer layer having an inner and an outer face, the outer layer consisting essentially of an extrudable thermoplastic 6-carbon block polyamide having an elongation value of at least 150% and an ability to withstand impacts of at least 2 ft/lbs at temperatures below about -20°C.; a thin intermediate bonding layer bonded to the inner face of the thick outer layer, the bonding layer consisting essentially of an extrudable melt processible thermoplastic capable of sufficiently permanent laminar adhesion to the inner face of the outer tubing; and an inner hydrocarbon barrier layer bonded to the intermediate bonding layer, the inner layer consisting of an extrudable, melt-processible thermoplastic capable of sufficiently permanent laminar adhesion with the intermediate bonding layer, the melt-processible thermoplastic consisting essentially of a fluoroplastic selected from the group consisting of polychlorotrifluoroethylene, ethylene tetrafluoroethylene copolymers and mixtures thereof.