INTRAPIPE LINING MATERIAL

摘要

PROBLEM TO BE SOLVED: To constitute an intrapipe lining material which shows outstanding chemical stability and is comparatively thinner and of high strength, in such a way that the lining material can be easily applied to an intrapipe lining technique including a reversed insertion technique. SOLUTION: This intrapipe lining material is manufactured by forming fibers composed mainly of aramid fibers with a strength of 200 kg/mm<2> or more into a comparatively thinner fibrous flock, then laminating a pliable and stretchable film over one face of the fibrous flock or coating the one face with a resin having the same nature as the film to form an airtight film layer, and impregnating the fibrous flock with a heat-curable resin. Thus the 5 cm width strength at 5% stretching is set below 100 daN.