Patent ID: 6478054
Filing Date: 2002-11-12
Classification: B29C,F16L,Y10T

Abstract:
A method for resin activation in pipeline repair comprising:moving a first liner tube into a pipeline to be repaired, the first liner tube having an outer layer facing in an outward radial direction and an inner layer facing in an inner radial direction, the inner layer carrying only one of a fluid uncured resin or a catalyst for activating the resin; inverting a second liner tube inside said first liner tube, said second liner tube having a first layer and a second layer, the second layer carrying only the other of the fluid uncured resin or the catalyst for activating the resin and contacting the inner layer of the first liner tube after the inverting step, whereby the resin and the catalyst are in communication with one another and the catalyst causes the resin to cure and harden.