Abstract: A pipeline structure with a lining material wherein a hermetic outer tube is disposed at the inner surface of a pipeline, and an inner lining material is disposed at the inner surface of the outer tube, said inner lining being made of a rigid fiber-reinforced plastic wherein a thermosetting resin is reinforced by a fiber reinforcement material.

Abstract: A method for lining pipe lines for transporting city water, city gas, petroleum and other various kinds of fluids.In a method used as a conventional art, i.e.

Abstract: A tubular lining material and a method and apparatus for manufacturing same, the tubular lining material being suitable for reinforcing pipe lines and comprising a tubular textile jacket having on the external surface thereof a coating of plural synthetic resins in the form of laminated layers, characterized in that the outermost layer of the coating is composed exclusively or predominantly of a thermoplastic polyester elastic resin and the innermost layer of the coating is composed exclusively or predominantly of a thermoplastic polyurethane elastic resin, the coating having been bonded superificially onto the external surface of the tubular textile jacket. The tubular lining material is manufactured by simultaneously extruding plural synthetic resins in an annularly layered form superficially onto the external surface of the tubular textile jacket, using an apparatus provided with an annularly arranged multiple extruders.

Abstract: 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.

Abstract: The present invention relates to a lining material suitable for reinforcing various pipe lines buried in the ground, which is made by inserting an unwoven fabric of a specific structure into the interior of a conventional air-impervious tubular fabric having a film of a synthetic resin on the exterior surface thereof and is passed through a pipe line while being evaginated under fluid pressure and which possesses earthquake-resistance and shape-maintaining property against external hydraulic pressure in addition to the characteristics required for conventional lining materials.

Abstract: A tubular lining material for city water pipe lines, which comprises a tubular textile jacket made of warps and a weft woven in a tubular form overlaid with a fluid-impervious coat of a flexible synthetic resin, at least one of the warps and the weft being comprised of threads manufactured by intertwisting filament yarns with spun yarns and/or spun-like textured yarns of synthetic fibers, and the flexible synthetic resin comprising a blend of 60-40% by weight of a polyethylene resin and 40-60% by weight of a styrene-ethylene-butylene-styrene resin, having a stress-crack resisting property of at least 1000 hours which penetrates the interstices of the fabric structure of the tubular textile jacket. The tubular lining material is remarkably improved in flexibility, heat-resistance, abrasion-resistance, stress-crack resistance and other mechanical strength properties and is harmless to drinking water.

Abstract: A tubular lining material for pipe lines having a relatively large inner diameter and possibly a plurality of bends or curved portions, which comprises a tubular textile jacket made of warps and a weft knitted or woven in a tubular form overlaid with an air-impervious coating of a flexible synthetic resin and is applicable onto the inner surface of a pipe line which has a relatively large inner diameter and may have a plurality of bends or curved portions in such manner that the tubular lining material with a binder on the inner surface thereof may be inserted into the pipe line and allowed to advance within the pipe line with or without the aid of a leading rope-like elongated material 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 the warps are comprised of crimped yarns of polybutylene te

Abstract: A tubular lining material for reinforcing pipe lines, which has a double-layered structure comprising an air-impervious outer tubular textile jacket provided on the inside thereof with a reinforcing inner tubular textile jacket, characterized in that the reinforcing tubular textile jacket is more coarse in weaving density and larger in diameter than the air-impervious tubular textile jacket and that the product of the length of the diameter and the elongation ratio in the direction of the diameter on fracture, of the air-impervious tubular textile jacket is approximately equal to the product of the length of the diameter and the elongation ratio in the direction of the diameter on fracture of the reinforcing tubular textile jacket.

Abstract: A tubular lining material and a method and apparatus for manufacturing same, the tubular lining material being suitable for reinforcing pipe lines and comprising a tubular textile jacket having on the external surface thereof a coating of plural synthetic resins in the form of laminated layers, characterized in that the outermost layer of the coating is composed exclusively or predominantly of a thermoplastic polyester elastic resin and the innermost layer of the coating is composed exclusively or predominantly of a thermoplastic polyurethane elastic resin, the coating having been bonded superficially onto the external surface of the tubular textile jacket. The tubular lining material is manufactured by simultaneously extruding plural synthetic resins in an annularly layered form superficially onto the external surface of the tubular textile jacket, using an apparatus provided with an annularly arranged multiple extruders.

Abstract: 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 thereto 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.

Abstract: A method for forming a coating of rubber or a synthetic resin having an even thickness on the external surface of a tubular textile jacket made of fibers woven or knitted in a tubular form, which comprises continuously passing the tubular textile jacket through one or more baths of a coating liquid and then solidifying the coating liquid attached to the external surface of the jacket, characterized in that an expanding assembly provided with plural expanding members which are capable of inflating the tubular textile jacket to almost circular or elliptical form in its cross section and are arranged at appropriate intervals in the longitudinal direction of the assembly is put in the interior space of the jacket and maintained in a definite position to the coating liquid in the baths, thereby keeping the jacket almost circular or elliptic in its cross section at least for a distance from the position where the tubular textile jacket departs from the bath of coating liquid to the position where fluidity of the co