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:
Jul. 15, 1986
Filed:
Feb. 21, 1985
Ashimori Industry Co., Ltd., Osaka, JP;
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. The tubular lining material is significantly improved in flexibility and adhesion to the tubular textile jacket.