LINING MATERIAL FOR DUCT.

摘要

PCT No. PCT/JP86/00074 Sec. 371 Date Oct. 17, 1986 Sec. 102(e) Date Oct. 17, 1986 PCT Filed Feb. 18, 1986 PCT Pub. No. WO86/04858 PCT Pub. Date Aug. 28, 1986.A lining material utilizable for a pipe-lining method, which comprises a tubular textile jacket woven or knitted with synthetic fiber yarns provided on the exterior surface thereof with a laminated two or three layer film of the following resinous materials: (1) in case of two layers: the outer layer: a synthetic resin of polyolefin series having a stress-crack resisting property of at least 1000 hours the inner layer: (1) a resin wherein an ethylenically unsaturated carboxylic acid has been grafted to an ethylene-vinyl acetate copolymer or (2) a resin comprised of 30-70% of a resin wherein an ethylenically unsaturated carboxylic acid has been grafted to a polymer of an alpha -olefin and 70-30% of a styrene-ethylene butylene-styrene resin composition. (2) in case of three layers: between the above described outer layer and inner layer is interposed an intermediate layer of the following resinous material: the intermediate layer: a styrene-ethylene butylene-styrene resin composition.