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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 12409638 B1

PDFFull Text
Date of Patent:
Sep. 09, 2025

Filed:

Apr. 12, 2018

High-shrink, high-strength packaging article exhibiting directional tear

Applicant:

Cryovac, Llc, Charlotte, NC (US);

Inventors:

Ashley Wynne, Woodruff, SC (US);

Kelly Ahlgren, Greenville, SC (US);

Miles Johnston, Tega Cay, SC (US);

Rebecca Higginbotham, Greenville, SC (US);

Assignee:

Cryovac, Inc., Charlotte, NC (US);

Attorney:

Jason R. Womer

Primary Examiner:

James C Yager

Int. Cl.
CPC ...
B32B 27/08 (2006.01); B32B 1/00 (2006.01); B32B 27/16 (2006.01); B32B 27/20 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B65D 75/00 (2006.01); B65D 75/26 (2006.01); B65D 75/58 (2006.01);
U.S. Cl.
CPC ...
B32B 27/08 (2013.01); B32B 1/00 (2013.01); B32B 27/16 (2013.01); B32B 27/20 (2013.01); B32B 27/304 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B65D 75/002 (2013.01); B65D 75/26 (2013.01); B65D 75/5805 (2013.01); B32B 2270/00 (2013.01); B32B 2272/00 (2013.01); B32B 2307/31 (2013.01); B32B 2307/558 (2013.01); B32B 2307/582 (2013.01); B32B 2307/72 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/736 (2013.01); B32B 2439/70 (2013.01); B65D 2275/00 (2013.01);
Abstract

A packaging article comprises a heat-shrinkable film having a total free shrink at 85° C. of at least 90%. The film has an inside seal layer, an outside polyester layer, and an inner oxygen barrier layer. A portion of the film contains a crosslinked polymer network. At least one film layer comprises an incompatible polymer blend. The article has tear initiators. The package provides post-shrink, full-length tear from the tear initiators to the opposite edge of the article, for easy product removal. The film has an instrumented impact energy-to-break of at least 0.65 J/mil, and/or an instrumented impact peak load strength of at least 66 Newtons/mil, and/or Truburst strength of at least 8 psi/mil.

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