Multi-layer tubing having electrostatic dissipation for handling hydrocarbon fluids
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United States of America Patent
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app pub date -
Apr 6, 2005
filing date -
Apr 14, 1992
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Abandoned
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Abstract
An elongated multi-layer tubing having a first layer disposed radially innermost and having an inner surface capable of prolonged exposure to a fluid containing hydrocarbons and an outer surface spaced a first predetermined radial thickness from the inner surface, the first layer containing an extrudable, melt-processible thermoplastic. The tubing also includes a second layer connected to or bonded to the first layer and consists essentially of an extrudable, melt-processible thermoplastic capable of laminar adhesion with the first layer. At least one of the first and second layers can be resistant to permeation by hydrocarbons. The tubing includes a third layer connected to or bonded to the second layer and containing an extrudable, melt-processible thermoplastic.
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