Patent ID: 6206993
Filing Date: 2001-03-27
Classification: B29C,F16L,Y10T

Abstract:
A method of lining the interior of a pipeline, comprising:providing a pipe liner having a preselected length and diameter;providing an elongated, inflation bladder, said inflation bladder having a preselected length greater than said pipe liner length;forming a pipe liner assembly by frangibly attaching said pipe liner at one end thereof to a surface of said inflation bladder by way of a stitched connection, the stitched connection extending circumferentially around said inflation bladder;providing a hollow, tubular carrier and attaching one end of said inflation bladder to said carrier;impregnating said pipe liner with a curable resin to form a resin-impregnated pipe liner;enclosing said liner assembly within carrier to protect said resin-impregnated pipe liner from contact with the interior of said pipeline;introducing said carrier into said pipeline and urging said liner assembly out of said carrier into said pipeline by applying fluid pressure to said carrier, whereby said pipe liner assembly exfoliates out of said carrier and attains a position within said pipeline wherein said resin-impregnated pipe liner opposes and contacts said pipeline interior;allowing said resin to cure, whereby said pipe liner forms a new interior lining of said pipeline; and,removing said carrier from said pipeline by breaking said stitched connection between said resin-impregnated pipe liner and said inflation bladder.