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:
Feb. 18, 2003
Filed:
Aug. 08, 2000
Claude Pasti, Ecaussinnes, BE;
Morgan Adhesives Company, Stow, OH (US);
Abstract
A method and apparatus for calendering polymeric vinyl films exhibiting high gloss and structural stability. Specifically, the invention presents a method and apparatus for calendering polyvinyl chloride film of such a nature. In accordance with the invention, a casting sheet is interposed within the calendering head wherein a blend of polyvinyl chloride resin is formed, in standard fashion, into a continuous film web. In accordance with one embodiment of the invention, the casting sheet, preferably of heat resistant polyester film, is introduced into a nip between existent processing rolls near the end of the processing head. Alternatively, a separate nip may be provided by the addition of a separate roll in juxtaposition to a final roll in the calendering head. In either instance, the casting sheet is forcefully applied to the polyvinyl chloride film prior to engagement with the embossing rolls of the manufacturing process.