Lining of pipelines using a continuous tubular pull-through plas

Details Lining of pipelines using a continuous tubular pull-through plas Lining of pipelines using a continuous tubular pull-through plas

1991-05-28

1992-08-04

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Prestressing solid body and uniting in stressed condition

29447, 156294, 264 28, 264 36, 264230, 264269, B29C 6342

Patent

active

051356988

ABSTRACT:
A tubular plastic liner having a coefficient of thermal expansion greater than the coefficient of thermal expansion of a pipeline is cooled to reduce its outside diameter below the inside diameter of the pipeline, which is also cooled, and is then pulled into the pipeline. After the pulling operation is completed the liner and pipeline are allowed to return to normal temperature, whereupon the liner expands to conform to the inside diameter of the pipeline.

REFERENCES:
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patent: 4332073 (1982-06-01), Yoshida et al.
patent: 4377335 (1983-03-01), Fannon et al.
patent: 4391028 (1983-07-01), Choudhury et al.
patent: 4496499 (1985-01-01), Brittain et al.
patent: 4573248 (1986-03-01), Hackett
patent: 4818314 (1989-04-01), Brittain

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