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. 03, 2015
Filed:
Oct. 31, 2007
Sam Edward Wuest, Oshkosh, WI (US);
Curtis Randolph Barr, Neenah, WI (US);
Chris Scott Mussell, New London, WI (US);
Steven James Dennis, Kaukauna, WI (US);
Sam Edward Wuest, Oshkosh, WI (US);
Curtis Randolph Barr, Neenah, WI (US);
Chris Scott Mussell, New London, WI (US);
Steven James Dennis, Kaukauna, WI (US);
Bemis Company, Inc., Neenah, WI (US);
Abstract
The present invention provides flexible packaging webs comprising a non-oriented metallized sealant film characterized by a secant modulus of less than 120,000 psi and an elongation at break of greater than 150%, wherein the non-oriented metallized sealant film comprises (1) a thermoplastic base layer of a material selected from the group consisting of ethylene/vinyl alcohol copolymer, ethylene/acrylic acid copolymer, ethylene/norbornene copolymer, polyamide and blends thereof; (2) a metal coating deposited on the base layer and having an optical density of 1.0 to 3.0; and (3) a heat sealing layer. The packaging webs of the present invention each exhibit an oxygen gas transmission rate of between 0 to 10.0 cm/100 in/24 hours at 73° F. (0 to 155 cm/m/24 hours at 23° C.) and 0% relative humidity and a water vapor transmission rate of between 0 to 0.1 g/100 in/24 hours at 100° F. (0 to 1.55 g/m/24 hours at 38° C.) and 90% relative humidity. The sealant films are formed by a blown coextrusion method.