BRANCH PIPE LINING MATERIAL AND METHOD FOR LINING BRANCH PIPE USING IT

摘要

PROBLEM TO BE SOLVED: To provide a branch pipe lining material for preventing occurrence of wrinkle by simply positioning a collar at a branch pipe opening in a short time. SOLUTION: In the branch pipe lining material 1 comprising a tubular resin adsorption material 2 having a cured collar 3 at its one end and covered on its outer surface with a plastic film 4 having high sealability on its outer surface and impregnating with uncured curable resin, the collar 3 is formed with a cylindrical part 3b (or a plurality of protrusions along its circumference) connected to the material 2 so that an outer diameterϕ1 of the part 3b is made smaller than an inner diameterϕof a branch opening to form a clearance between the both.