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:
Aug. 14, 2001
Filed:
Sep. 02, 1998
Applicant:
Inventors:
Ram K. Ramesh, Greenville, SC (US);
R. Karina Espinel, Duncan, SC (US);
Assignee:
Cryovac, Inc., Duncan, SC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 7/02 ; B32B 2/730 ; B32B 2/734 ; B32B 2/736 ; B32B 2/740 ;
U.S. Cl.
CPC ...
B32B 7/02 ; B32B 2/730 ; B32B 2/734 ; B32B 2/736 ; B32B 2/740 ;
Abstract
A heat shrinkable film suitable for use in cook-in applications is provided which exhibits a transverse direction free shrink at 50° C. of less than about 2% and a transverse direction free shrink at 57° C. of at least about 3%. The film has at least two layers. The first layer includes an ethylene/vinyl alcohol copolymer and the film has a second layer directly adhered to the first layer, the second layer including at least one member selected from the group consisting of polyester, polyamide and polyurethane. Preferably, the desired shrink properties are attained by annealing the film under controlled conditions.