ENVELOPE PIPE AND METHOD FOR COVERING OF PIPELINE OR KANAL

摘要

A soft lining process lining tube is made up of an inner layer with one or more reinforcement layers wrapped there around. The or each reinforcement layer is wrapped so that the edges thereof overlap and the said overlapped edges may be adhered together with an adhesive which will yield when subsequently the lining tube is inflated onto a pipeline or passageway surface to be lined. The inner layer is of resin absorbent material as is the or each reinforcement layer, and the lining tube is impregnated with curable synthetic resin before being inflated into position. The resin is caused to cure so that the reinforcement layer or layers becomes or become embedded in the cured resin.