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:
Nov. 02, 1993
Filed:
Nov. 20, 1992
Applicant:
Inventors:
Peter W van Es, Hoogerheide, NL;
Petrus J Plompen, Bergen op Zoom, NL;
Assignee:
General Electric Company, Pittsfield, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428412 ;
Abstract
The invention relates to a method for the coextrusion of a plate-shaped product. In the method according to the invention at least one coating layer is provided by means of coextrusion which is composed of a special polymer mixture. This mixture enables obtaining a matt surface and can be provided very uniformly on the major layer of polycarbonate by coextrusion. The polymer mixture comprises 84-92% by weight of polycarbonate, 4-8% by weight of talcum and 4-8% by weight of a mattifying agent based on acrylate copolymers.