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:
Sep. 24, 1985
Filed:
Dec. 24, 1984
Im K Park, Somerville, NJ (US);
Tenneco Polymers, Inc., Houston, TX (US);
Abstract
Laminated skin-foamed core sandwich structures characterized by an excellent stiffness and load-bearing capability to weight ratio are prepared by heating in a closed mold a sandwich construction that comprises skin layers that comprise a thermoplastic polymer having a glass transition temperature in the range of 75.degree. to 85.degree. C. and reinforcing fibers and a core that comprises a thermoplastic polymer that is compatible with the polymer in the skin layers and that has a glass transition temperature that is 10.degree. to 20.degree. C. lower than that of the polymer in the skin layers and a blowing agent at a temperature sufficient to fuse and expand the core and to fuse the skin layers and bond them to the expanded core.