Tubular lining material for pipe lines having bends

Details Tubular lining material for pipe lines having bends Tubular lining material for pipe lines having bends

F - Mech Eng,Light,Heat,Weapons

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189/48

F16L 58/02 (2006.01) F16L 55/165 (2006.01)

Patent

CA 1219533

S P E C I F I C A T I O N Title: A TUBULAR LINING MATERIAL FOR PIPE LINES HAVING BENDS ABSTRACT OF THE DISCLOSURE A tubular lining material for pipe lines having bends or curved portions, which comprises a tubular textile jacket made of warps and wefts woven in a tubular form overlaid with a coating of a flexible synthetic resin and is applicable onto the inner surface of a pipe line having bends or curved portions in such manner that the tubular lining material with a binder onto the inner surface thereof is inserted into the pipe line and allowed to advance within the pipe line with or without the aid of a leading rope-like elongated element while turning the tubular lining material inside out under fluid pressure thereby applying the tubular lining material onto the inner surface of the pipe line with the binder being interposed between the pipe line and the tubular lining material, characterized in that a part or all of the warps are comprised of an elastic yarn around which, over the full length thereof, a synthetic fiber yarn or yarns have been left- and/or right-handedly coiled. This tubular lining material is particularly suitable for use in a lining method taking advantage of evagination as disclosed in U.S. Patent 4,334,943 for lining a pipe line having an inner diameter of 25-200 mm and a plurality of bends, such as service pipe lines or house pipe lines of gas without occurrence of wrinkles in the lining material in a bend. - 1 -

452204

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