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. 29, 1989
Filed:
Nov. 13, 1987
Paul E Glover, Taunton, GB;
BCL Limited, Bridgewater, GB;
Abstract
The invention is concerned with a multilayer carrier film for supporting a fluid synthetic resin composition impregnated fibrous mat against a surface, for example the inside surface of a pipe, during the curing of the resin. The film comprises a nylon layer (preferably nylon 6) having on one surface a layer of a polyamide copolymer having a softening point at a temperature below 170.degree. C. (for example a nylon 6/12 copolymer in which the nylon 12 component lies in the range from 35 to 55% by weight) and on the other surface a layer of a weldable synthetic plastic composition, for example a polyethylene ionomer. The fibrous mat which may consist of polyester, acrylic or polypropylene fibres is heat-bonded to the polyamide copolymer layer of the multilayer film. The film is resistant to delamination by the resin composition.