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:
Jul. 16, 1996
Filed:
Jul. 22, 1994
Roman B Hawrylko, Avon Lake, OH (US);
The Geon Company, Avon Lake, OH (US);
Abstract
A process for the extrusion of rigid PVC profile other than pipe is disclosed in a twin conical screw extruder, equipped with high shear screws. The process includes extruding a compound specially adapted for the process, the compound contains a polyvinyl chloride resin with an average particle size of from 130 to about 200 microns, a lubricant system containing no more than about 3.5 parts of one or more lubricants, an organo metal salt, from 0 to less than 0.75 parts of a polymeric processing aid, at least one filler/pigment, and a stabilizer for PVC. The process achieves extrudate surfaces characterized by a smooth, dull finish. The process advantageously operates at high extrusion output rates under the conditions specified.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile