Packaging material having a nonstick composition and use thereof for packaging foods
AssigneeWIPAK Walothen GmbH
InventorsBernd SPERLICH, Willi SCHWARZ, Hans WUNDERLICH
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Abstract
To prevent packaging materials made of thermoplastic polymers from adhering to pasty and fatty foods, a nonstick composition comprising a fatty acid ester of a polyhydric alcohol having at least one fatty acid radical per ester molecule with 19 or more carbon atoms is incorporated into at least one selected area of a polymer packaging material. Even if included only in surface-close regions or layers of the packaging material, a permanent nonstick effect is observed.
Claims19
A packaging material suitable for packaging foods, comprising a thermoplastic polymer containing in at least one selected region of a fatty acid ester of a polyhydric alcohol, including at least one fatty acid radical per ester molecule having 19 carbon atoms or more, in an amount sufficient to provide an anti-stick property with respect to a packaged product.
A method of making a packaging material for packaging foods, comprising incorporating into at least one selected region of a polymeric packaging material a fatty acid ester of a polyhydric alcohol, including at least one fatty acid radical per ester molecule having 19 carbon atoms or more, in an amount sufficient to provide an anti-stick property with respect to a packaged product.
Dependencies are inferred from the claim text.