Patent ID: 6250687
Filing Date: 2001-06-26
Classification: E03F,F16L

Abstract:
A process for leakproof connection of branch lines, such as house lines (1), to main lines, such as rehabilitated sewer pipes (2), in which one part of the length of a lining hose (4) composed of a sheet of textile, such as a nonwoven fabric, woven fabric, knitted fabric, mesh fabric or laminate, and capable of being saturated with a liquid, curable resin, is introduced into the branch line, before or after saturation with a resin, and its other, collar-shaped expanded end is bonded to the inner side of the main line in a leakproof manner, characterized in thatthe collar-shaped expanded end of the textile lining hose (4) is bonded with the aid of a ring-shaped transition piece (5) to an inner surface of the inner side of the main line, said inner surface (6) being composed of thermoplastic polymer,where an upper side of the ring-shaped transition piece (5) is composed of thermoplastic polymer (7), anda lower side of the ring-shaped transition piece (5) comprises a sheet (8) of textile, such as a nonwoven fabric, woven fabric, mesh fabric or laminate,the ring-shaped transition piece (5) is fused to the inner thermoplastic surface (6) of the main line,and the sheet (8) of textile of the ring-shaped transition piece (5) is bonded by gluing to the collar-shaped expanded end of the lining hose (4).