Patent ID: 6117507
Filing Date: 2000-09-12
Classification: B29C,B29D,B29K,B29L,F16L,Y10T

Abstract:
A flexible tubular liner assembly having at least one section of a resin absorbent layer impregnated with a curable resin for lining an existing conduit of a known length, comprising:a lining tube section having a leading end and a trailing end, the tube formed from at least an impermeable membrane and having a sealed leading end to prevent ingress of air to the interior thereof;an inflation tube section having a leading end and a trailing end, the inflation tube formed from at least an impermeable membrane with the leading end sealed to the trailing end of the lining tube section and the trailing end of the inflation tube sealed to prevent ingress of air into the interior thereby forming a continuous tube substantially free of air;at least one of the lining tube section and the inflation tube section having a layer of resin absorbent material with the impermeable membrane bonded to the layer of resin absorbent layer; andeach of the lining tube section and the inflation tube section of a length at least equal to the length of the conduit to be lined with a curable resin impregnated into the resin absorbent layer.