Cryovac, Inc.

Miles Johnston

Ashley Wynne

Kelly Ray Ahlgren

Rebecca Higginbotham

Robert Babrowicz

Dwight W Schwark

Silvia Bottini

Jessica Ashley Olsen

Sri Charan Yarlagadda

Kelly Ahlgren

Rebecca Kersey

A multilayer shrink film having at least two barrier layers. The barrier layers including ethylene-vinyl alcohol copolymer with an ethylene content of between 27-50 mol %. The multilayer shrink film having a free shrink of at least 60%, 65% and 70% at 85 #C measured in accordance with ASTM D2732. The multilayer shrink film having an oxygen transmission rate of no more than: 5, 10, 15, or 20 cubic centimeters (at standard temperature and pressure) per square meter per day per 1 atmosphere of oxygen pressure differential measured at 0% relative humidity and 23 #C measured according to ASTM D-3985. The multilayer shrink film having a haze after shrink of less than 50 measured in accordance with ASTM D 1003.

Multilayer heat-shrinkable barrier film and packages made therefrom

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.

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

A heat-shrinkable film comprises a blend of 35-75 wt % of an ethylene-based polymer, 10-45 wt % of an ethylene/unsaturated ester copolymer, and 5-30 wt % of a plastomer, with the blend making up at least 20 wt % of the film. The ethylene-based polymer has a peak melt point &#x2265;95&#xb0; C. The plastomer has a peak melt point &#x2264;90&#xb0; C. and a melt index of &#x2264;1.1 g/10 min. The film comprises a cross-linked polymer network which has been strained by solid state orientation. The film has a total free shrink at 85&#xb0; C. of at least 90% and an energy-to-break of at least 0.70 J/mil.

High-shrink, high-strength multilayer film containing three-component blend

A multilayer, heat-shrinkable film has a first portion containing an outer heat seal layer and a second portion containing a PVDC barrier layer and a second outer layer comprising polyester. Both film portions comprise polymer networks which are strained by solid-state orientation, but only the first portion contains a crosslinked polymer network. The film has (i) a total free shrink at 85&#xb0; C. of at least 90% and (ii) an instrumented impact energy-to-break of at least 0.0.65 J/mil and/or an instrumented impact peak load of at least 70 N/mil. The film is primarily made from ethylene-based polymers. Packaging articles can be made by sealing the film to itself. The film comprises no polyamide or polyamide in an amount up to 10 wt %, on a total film weight basis.

High-shrink, high-strength multilayer film

Growing community of inventors

Tega Cay, SC, United States of America

Miles Johnston