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2006-07-26 News Headlines

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Coextruded film for packaging shrinks easily

New shrink film Cryovac Xenith3, with the aide of Topas COC, shrinks softly for packaging of goods without distortion and conforms closely to irregular products.

Sealed Air Corporation has succeeded in creating a film that shrinks easily with a low shrink force at temperatures as low as 150°F without compromising strength. The new shrink film, Cryovac® Xenith3™, also exhibits a high free shrink and provides a wide processing window. These benefits are due in great measure to the use of Topas* cyclic olefin copolymer (COC) in this multi-layer coextruded film.

Xenith3 shrink film, the latest iteration of the company’s new technology platform, shrinks softly to wrap delicate goods without distorting them and conforms closely to contoured and irregularly shaped products. Its tear strength, depending on thickness, varies from about 30 g/mil to well over 90 g/mil, which is far greater than the 2 to 20 g/mil typically found in other shrink films. Packagers can thus use thinner grades of Xenith3 films without sacrificing packaging performance.

Find Information and Suppliers of shrink packaging.

Cryovac®/Sealed Air’s new Xenith3™ shrink film. Click Go for larger image. photo: Topas Advanced Polymers

Xenith3 film can operate in a shrink range from 150° to 400°F. The low end of the shrink range in most other films typically starts at 220°F. The ability to shrink at a relatively low temperature can reduce utility bills and makes this film an ideal product for wrapping heat-sensitive items. The film also runs well on a wide range of shrink equipment and with many types of sealing mechanisms.

"The use of a tailored grade of Topas COC has made this film a category breaking product," says Brendan Thomas, vice president of marketing at Sealed Air. "Shrink films usually have either strength or soft shrink. Xenith3 combines them both and is the strongest soft-shrink film available.

The use of Xenith3 film. Click Go for larger image. photo: Topas Advanced Polymers

"Xenith3 film is a substantial improvement over Xenith2 film. It provides better slip, so it is easier to handle and process, and it has better clarity and gloss, so products remain visible to consumers. It also meets FDA food contact requirements, which expands its application range. As a robust film, Xenith3 films keep products at a peak presentation level in shipping, during warehouse and retail operations, and when handled by consumers."

Find Information about Sealed Air Corporation.

Topas COC is a clear polymer used in shrink films either as a monofilm blend of COC and polyolefin or as a layer in multilayer structures. In addition to its high shrinkage at low shrink force and excellent stiffness, it offers the ability to adjust shrink curves from steep to flat; as well as good die cutting, printing and metallization characteristics. It also is a halogen-free polymer that provides good recyclability.

* Topas cyclic olefin copolymer (COC) is a registered trademark of Topas Advanced Polymers, Inc.

Find Information about Topas Advanced Polymers.

Read a recent press release from Topas about - 'Remedent selects Tekni-Plex COC-based blister film that provides inertness to peroxide, moisture barrier and stiffness for packaging of tooth whitening products.'

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