IDiyas

For the Inventor, By the Inventor

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.:

US 9452592 B1

PDFFull Text
Date of Patent:
Sep. 27, 2016

Filed:

Aug. 28, 2007

Multilayer film having an active oxygen barrier layer with radiation enhanced active barrier properties

Applicants:

Scott Beckwith, Greer, SC (US);

Frank Bryan Edwards, Simpsonville, SC (US);

Janet Rivett, Simpsonville, NC (US);

Cynthia Louise Ebner, Greer, SC (US);

Thomas Kennedy, Simpsonville, SC (US);

Rachel Mcdowell, Moore, SC (US);

Drew V. Speer, Simpsonville, NC (US);

Inventors:

Scott Beckwith, Greer, SC (US);

Frank Bryan Edwards, Simpsonville, SC (US);

Janet Rivett, Simpsonville, NC (US);

Cynthia Louise Ebner, Greer, SC (US);

Thomas Kennedy, Simpsonville, SC (US);

Rachel McDowell, Moore, SC (US);

Drew V. Speer, Simpsonville, NC (US);

Assignee:

Cryovac, Inc., Duncan, SC (US);

Attorney:

Alston & Bird LLP

Primary Examiner:

Gwendolyn Blackwell

Assistant Examiner:

Kevin Ortman, Jr

Int. Cl.
CPC ...
A23L 3/00 (2006.01); B32B 27/00 (2006.01); H05B 6/00 (2006.01); B32B 27/08 (2006.01); B32B 27/18 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01);
U.S. Cl.
CPC ...
B32B 27/08 (2013.01); B32B 27/18 (2013.01); B32B 27/304 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 2270/00 (2013.01); B32B 2274/00 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/736 (2013.01); B32B 2439/70 (2013.01); Y10T 428/31504 (2015.04); Y10T 428/31855 (2015.04);
Abstract

The present invention is directed to a multilayer film having an active oxygen barrier layer that comprises an oxygen scavenging composition that is a blend of a thermoplastic resin (A) having carbon-carbon double bonds substantially in its main chain, a transition metal salt (B), and an oxygen barrier polymer (C) having oxygen barrier properties that can be further enhanced by exposing the composition to a source of ionizing radiation e.g., electron beam radiation. Irradiation improves the oxygen scavenging abilities of the oxygen scavenging composition so that oxygen can be intercepted and scavenged as it passes through the film. The resulting irradiated multilayer film has improved active barrier properties in comparison to the same film prior to irradiation. As result, the multilayer film of the present invention can be used in packaging applications to help maintain a low oxygen atmosphere in the interior of a package.

Find Patent Forward Citations

Loading…