Method for lining a branch pipe

Details Method for lining a branch pipe Method for lining a branch pipe

1993-10-22

1994-10-18

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156287, 156294, 264269, 264516, 264573, B29C 6336

Patent

active

053565029

ABSTRACT:
A method for lining a branch pipe comprising the steps of: preparing a tubular liner bag by sewing a rectangular nonwoven resin-absorbent fabric into a tubular shape with one end closed; attaching an impermeable plastic film over the external surface of this tubular liner bag; soaking the nonwoven resin-absorbent fabric with a hardenable fluid resin; everting the liner bag into the branch pipe until the eversion head of the liner bag is stopped by the inner wall of the main pipe; forcing the eversion head of the liner bag to turn downstream in the main pipe, thus allowing the the liner bag to evert entirely; hardening the hardenable fluid resin while inflating the liner bag; and removing that portion of the liner bag which protrudes into the main pipe.

REFERENCES:
patent: 4366012 (1982-12-01), Wood
patent: 4434115 (1984-02-01), Chick
patent: 4778553 (1988-10-01), Wood
patent: 4786345 (1988-11-01), Wood
patent: 5108228 (1992-04-01), Miyazaki et al.
patent: 5108533 (1992-04-01), Long et al.
patent: 5200011 (1993-04-01), Imamura et al.

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