The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1987
Filed:
Oct. 18, 1985
Ashimori Industry Co., Ltd., Osaka, JP;
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.