LINING MATERIAL FOR RENOVATING EXISTING PIPE AND METHOD FOR RENOVATING EXISTING PIPE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide: a lining material for renovating an existing pipe having high quality stability, productivity and workability; and a method for renovating an existing pipe.;SOLUTION: Provided is a lining material for renovating an existing pipe, comprising: a tubular resin-absorbing substrate having a fluid-tight outer surface and impregnated with a curable resin composition; and a tubular sheet disposed folded inside the tubular resin absorbing substrate and having a peripheral length capable of covering the inner surface of the tubular resin-absorbing substrate. Also provided is a method for renovating an existing pipe by covering an inner wall of the existing pipe with the lining material for renovating an existing pipe, comprising the steps of: inserting the lining material into an existing pipe; introducing a liquid in the folded tubular sheet of the inserted lining material to expand the tubular sheet by the liquid pressure and press the lining sheet against the inner wall of the existing pipe; and covering the inner wall of the existing pipe by curing the impregnated curable resin composition in a state where the lining material is pressed against the inner wall of the existing pipe.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT