TUBE LINING MATERIAL, ITS MANUFACTURING METHOD, METHOD FOR LINING TUBE

摘要

PROBLEM TO BE SOLVED: To provide a tube lining material having a thin thickness, a high strength and no wrinkle generated on an inner surface after lining. SOLUTION: The tube lining material 1 comprises an outer layer 2 made by coating an outer surface of a tubular resin absorbing material 2A made by compounding a sheet made of glass fibers and the nonwoven fabric made of plastic fibers by needle punching with a plastic film 2B, and impregnating the material 2A with a curable resin; and an inner layer 3 made by coating an inner surface of a tubular resin absorbing material 3A made of the nonwoven fabric obtained by needle punching the plastic fibers with a plastic film 3B, and impregnating the material 3A with the curable resin of a two-layer structure. Since the layer 2 of the material 1 contains the glass fibers having a high strength, the thickness of the material 1 can be reduced with respect to a necessary strength.