Multi-layer tubing assembly for fluid and vapor handling systems

Details Multi-layer tubing assembly for fluid and vapor handling systems Multi-layer tubing assembly for fluid and vapor handling systems

1996-07-08

1999-08-03

Brinson, Patrick

Pipes and tubular conduits

Flexible

Distinct layers

138141, 138140, 138DIG1, F16L 1104

Patent

active

059312017

ABSTRACT:
A multi-layer tubing assembly for use in fuel-line applications. An extruded innermost semi-conductive layer of a fluoroplastic has a surface resistivity in the range of 10.sup.1 to 10.sup.6 ohm/sq. An inner permeation-resistant layer of a fluoroplastic is coextruded around the innermost layer at temperatures below 600 degrees Fahrenheit. An adhesive layer of polymer blend coextruded around the inner layer has a multiphase morphology wherein one phase is miscible with the fluoroplastic and another phase is miscible with a rubber-like multiphase polymer. A cover layer of the rubber-like multiphase polymer is coextruded around the adhesive layer.

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