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:
Jun. 26, 1990
Filed:
Dec. 13, 1988
Joy S Bloom, Wilmington, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A thermoformable laminate comprising (1) a polyaryletherketone sheet having repeating units derived from diphenyl ether having attached to one of the phenyl rings either a 1,4-phenylenedicarbonyl group or a 1,3-phenylenedicarbonyl group, the ratio of 1,4-phenylenedicarbonyl groups to 1,3-phenylenedicarbonyl groups being 70:30 to 0:100, preferably 60:40 to 0:100, especially 60:40 to 50:50, the sheet thickness being about 625-5000 micrometers, and (2) a polyvinyl fluoride film having a thickness of about 12.8 to 204 micrometers can be thermoformed at a temperature of about 160.degree.-200.degree. C., especially 170.degree.-195.degree. C. One important application of such thermoformable sheets is in fabricating three-dimensional panels for aircraft interiors.