Method of lining an inner surface of a pipe

Details Method of lining an inner surface of a pipe Method of lining an inner surface of a pipe

1993-10-12

1995-09-05

Aftergut, Karen

Plastic and nonmetallic article shaping or treating: processes

Forming structural installations in situ

Uniting preform member with molding material

138 97, 156 94, 264 36, 264 405, 264269, B32B 3500, E04B 116

Patent

active

054476640

ABSTRACT:
An amount of resin necessary for lining an inner surface of a pipe is calculated. A lining pig is inserted in the pipe from an open end thereof, and the calculated amount of resin is supplied in the pipe from the open end subsequent to the insertion of the lining pig. A blocking pig is inserted in the pipe behind the resin, and a pressurized non-compressible liquid is supplied in the pipe subsequent to the insertion of the blocking pig thereby feeding the charged resin through the blocking pig until a front end of the resin reaches an inner end of the pipe. The resin is sucked together with the lining pig and the blocking pig so that the inner surface of the pipe is lined with the resin.

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patent: 4985196 (1991-01-01), LeDoux et al.
patent: 5202157 (1993-04-01), Tomoyasu et al.
patent: 5230842 (1993-07-01), Munde

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