Method of lining a host pipe with a liner by diameter reduction

Plastic and nonmetallic article shaping or treating: processes – With step of cooling to a temperature of zero degrees c. or...

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156294, 138 97, 264 36, 264269, B29C 6342

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active

056268017

ABSTRACT:
A method is shown for lining a host pipe with a polyolefin liner having an outside diameter which is initially greater than the inside diameter of the host pipe. A length of the liner is cryogenically cooled to a supercooled state to reduce the outside diameter of the liner and to maintain the downsized dimensions of the liner while increasing the tensile strength to facilitate insertion of the liner into the host pipe.

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