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:
Jan. 15, 1985
Filed:
Nov. 22, 1982
Applicant:
Inventors:
Rudolf Vyvial, Ludwigshafen, DE;
Christof Taubitz, Wachenheim, DE;
Lothar Schlemmer, Maxdorf, DE;
Gerhard Bleckmann, Lampertheim, DE;
Manfred Zuerger, Sinsheim, DE;
Heinrich Krieger, Telgte, DE;
Heino Thiele, Ludwigshafen, DE;
Assignee:
BASF Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29F / ;
U.S. Cl.
CPC ...
264101 ; 264102 ; 264185 ;
Abstract
A sheet-like structure is produced from a vinyl alcohol polymer by a method wherein, in a self-cleaning multi-screw extruder, the polymer is mixed with a small amount of water, the mixture is melted, homogenized, devolatilized and finally extruded as a melt, and the extrudate is shaped in a conventional manner into the sheet-like structure.