Biaxially stretched biodegradable film

Details Biaxially stretched biodegradable film Biaxially stretched biodegradable film

C - Chemistry, Metallurgy

08

J

C08J 5/18 (2006.01) C08L 67/04 (2006.01)

Patent

CA 2388925

A biaxially stretched film which is capable of tacking, has fusibility, is reduced in thickness fluctuation, breakage, blushing, unevenness, etc., i.e., has stretching stability, and is degradable in the natural environment. The film comprises a polylactic acid polymer as the main component and has a storage modulus E' at 120° C of 100 to 230 MPa as determined by the testing method for temperature dependence of dynamic viscoelasticity in accordance with JIS K7198.

L'invention concerne un film bi-orienté pouvant changer de direction. Ce film présente une fusibilité et une variation d'épaisseur, une cassure, une opalescence, un défaut de planéité, etc., réduits. C'est-à-dire qu'il présente une stabilité d'étirement et qu'il est biodégradable dans l'environnement naturel. Ce film comprend un polymère d'acide polylactique comme composant principal et présente un module de conservation E' à 120 DEG C compris entre 100 et 230 MPa, suite aux tests de dépendance de la température de la viscoélasticité dynamique réalisés conformément au JIS K7198.

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