LINING METHOD OF PIPELINE

摘要

PROBLEM TO BE SOLVED: To provide a lining method of a pipeline for repairing the inner surface of embedded piping such as sewage piping or the like.

SOLUTION: A flexible tube 7 is inserted in the pipeline 1, a flexible airtight layer is formed to the outer surface of a cylindrical fiber layer and a reaction-curable resin liquid is infiltrated in the fiber layer to form a lining material 5. This lining material 5 is inserted in the tube 7 while turned inside out so that the inside thereof becomes outside by fluid pressure and the reaction-curable resin liquid is cured while expanding the turned-over lining material 5 by the fluid pressure to form a rigid FRP pipe to the inside of the pipeline 1. In this lining method, the tube 7 has an outer layer comprising a nylon resin and an inner layer comprising an ethylene/vinyl acetate copolymer resin.

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