Mitsubishi Polyester Film Gmbh

Jose F Alfaro

John M Heberger

Edwin C Culbertson

Stephen J Gust

Kenneth J Muschelewicz

Jan C Westermeier

Jeffrey R Rounsley

Bob Finke

Ghulam Mustafa A Sange

A film layer is disclosed that is capable of shrinking when subjected to energy, such as heat. The film layer, for instance, can be formed and then stretched in one or two directions at a relatively low temperature. In particular, the film is stretched while the film layer is at a temperature near the glass transition temperature of the polymer used to form the film. Drawing the film at a relatively low temperature has been found to improve the shrink properties of the film. In one embodiment, the film layer is comprised of a non-modified polyester, such as polyethylene terephthalate. For example, the polyethylene terephthalate can be made by reacting terephthalic acid with ethylene glycol or polyethylene glycol.

Polyester film having latent shrink properties and process for producing same

The present invention provides a coated polymer film having release properties. The film includes a self-supporting polymer film layer, and a release coating on the film layer. The release coating, which can also be applied to alternate substrates, includes a cross-linkable acrylic and a polyolefin wax. The coating can optionally include a polysiloxane in combination with one or both of the acrylic and polyolefin wax.

Release coated polymer film

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Chattanooga, TN, United States of America

Jose F Alfaro