Composition suitable for single-sided, low-noise, stretch...

Details Composition suitable for single-sided, low-noise, stretch... Composition suitable for single-sided, low-noise, stretch...

C - Chemistry, Metallurgy

08

J

C08J 5/18 (2006.01) C08L 23/08 (2006.01)

Patent

CA 2563043

The invention is directed to a composition suitable for use in a single-sided stretch cling film, the composition having from 0.1 to 20 percent by weight of a propylene-based copolymer having substantially isotactic propylene sequences, and having from 80 to 99 percent by weight of an ethylene-based copolymer having a density of at least 0.905 g/cc, wherein a film made from the composition exhibits cling layer to release layer cling of at least 70 grams force per inch as measured by ASTM D-5458-95, noise levels of less than 87 dB during unwinding operations, and has a modulus of at least 3 MPA as determined by ASTM D-882.

L'invention concerne une composition pour film autocollant extensible monoface. Cette composition contient entre 0,1 et 20 % en poids d'un copolymère à base de propylène contenant des séquences propylène sensiblement isotactiques, et entre 80 et 99 % en poids d'un copolymère à base d'éthylène présentant une densité d'au moins 0,905 g/cc. L'invention concerne également un film fabriqué à partir de ladite composition. Ce film présente une force d'adhérence d'au moins 70 grammes par pouce entre la couche autocollante et la couche de séparation, telle que mesurée par ASTM D-5458-95, un niveau de bruit inférieur à 87 dB pendant le déroulement, et un module d'au moins 3 MPA, tel que défini par ASTM D-882.

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