PRESSURE BAG AND METHOD FOR LINING BRANCH PIPE

摘要

PROBLEM TO BE SOLVED: To provide a pressure bag in which the overall collar of a branch pipe lining material is brought into uniform contact with the peripheral edge of the opening of the branch pipe and can be surely adhered to the edge of the opening of the pipe.

SOLUTION: The pressure bag 11 is closed at one end by an end collar 15, and the branch pipe lining material 1 is contained in the bag 11. The bag 11 comprises a head collar 16 having a head collar lifting bar (head collar lifting part) 28 provided at the bag 11, moving cooperatively with the bag 11 when a hydraulic pressure is operated at the bag 11 and mounted at the end of the side oppositely to the side mounted with the collar 15.

COPYRIGHT: (C)2004,JPO