초록 ▼

A layered tubing for use in a motor vehicle composed of a thick outer layer having an inner and an outer face, the outer layer made of an extrudable thermoplastic elastomer; a thin intermediate bonding layer bonded to the inner face of the thick outer layer, the bonding layer composed of an extrudab

A layered tubing for use in a motor vehicle composed of a thick outer layer having an inner and an outer face, the outer layer made of an extrudable thermoplastic elastomer; 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 with the thick outer layer; an interior layer bonded to the intermediate bonding layer, the interior layer composed of a fluoroplastic which is resistant to permeation by and interaction with short-chain aliphatic and aromatic compounds; and an innermost electrostatic dissipation layer.

대표청구항 ▼

[ What is claimed is:] [1.] A layered tubing for use in a motor vehicle, the tubing comprising:a flexible outer layer having a given thickness and an inner and an outer face, the outer layer consisting essentially of an extrudable thermoplastic composed of polyamides and thermoplastic elastomers sel

[ What is claimed is:] [1.] A layered tubing for use in a motor vehicle, the tubing comprising:a flexible outer layer having a given thickness and an inner and an outer face, the outer layer consisting essentially of an extrudable thermoplastic composed of polyamides and thermoplastic elastomers selected from the group consisting of thermoplastic vulcanates and melt processible rubbers;an intermediate bonding layer bonded to the inner face of the outer layer, the intermediate bonding layer consisting essentially of an extrudable melt processible thermoplastic capable of sufficiently permanent laminar adhesion to the inner face of the outer layer;an interior layer bonded to the intermediate bonding layer, the interior layer consisting essentially of an extrudable, melt-processible thermoplastic material capable of sufficiently permanent laminar adhesion with the intermediate bonding layer, the melt-processible thermoplastic of the interior layer being chemically dissimilar to the thermoplastic employed in the outer layer and containing at least one fluoroplastic component, the melt-processible thermoplastic of the interior layer being resistant to permeation by and interaction with short-chain aliphatic and aromatic hydrocarbon compounds; andan innermost electrostatic dissipation layer integrally bonded to the interior layer, the electrostatic dissipation layer consisting of an extrudable, melt-processible thermoplastic material capable of sufficiently permanent laminar adhesion with the intermediate bonding layer and of dissipating electrostatic energy, the electrostatic dissipation capacity being in a range between about 10.sup.4 to 10.sup.9 ohm/cm.sup.2.