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:
Oct. 07, 2003
Filed:
Nov. 17, 1999
Applicant:
Inventors:
Owen Joseph Mc Garel, Naperville, IL (US);
Merlan Elroy McAllister, Clarendon Hills, IL (US);
Assignee:
Viskase Corporation, Willowbrook, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A22C 1/300 ; B29D 2/200 ; B29D 2/202 ;
U.S. Cl.
CPC ...
A22C 1/300 ; B29D 2/200 ; B29D 2/202 ;
Abstract
Disclosed is a method of forming a seamless, non derivatized cellulose tubular film having enhanced rewet shrinkage properties. The enhanced properties are provided by first drying a hydrated extruded tube of non derivatized cellulose gel at one inflated diameter to form a tubular film. The film is then moisturized while holding an inflated diameter smaller than the drying diameter.