Pose med rørforing, fremgangsmåde for fremstilling heraf samt fremgangsmåden for reparation af rør

摘要

A pipe liner bag (1) is provided for reliably lining a pipe (10) into which water may penetrate. The pipe liner bag has a double layer structure including an inner layer of a tubular nonwoven fabric (2) made of fine yarn of three deniers or less and an outer layer of a tubular nonwoven fabric (3) made of thicker yarn of 3 - 15 deniers. The tubular nonwoven fabric (2) constituting the inner layer is impregnated with highly viscous and thixotropic hardenable resin mixed with granule fillers of a small diameter, while the tubular nonwoven fabric (3) constituting the outer layer is impregnated with hardenable resin mixed with granule filler of a larger diameter. After the pipe liner bag (1) is everted and inserted into a pipe (10) to be repaired by fluid pressure, the hardenable resin impregnated in the pipe liner bag is cured while maintaining the internal pressure thereof constant. When this pipe liner bag (1) is used to repair a pipe (10) from which a branch pipe (11) is branched off, it can be integrated with a branch pipe liner bag (12).