FILM COMPRISING POLYLACTIC ACID POLYMER SUITABLE FOR GRAPHIC ARTICLES

An article is described comprising a first film layer comprising polylactic acid polymer (semicrystalline polylactic acid polymer; amorphous polylactic acid polymer; or a mixture thereof); a second (e.g. polyvinyl acetate) polymer having a Tg of at least 25°C; plasticizer. In some embodiment, the fi...

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Bibliographische Detailangaben
Hauptverfasser:	JAST, Matthew A, ZHOU, Ning, NORTH, Diane
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	An article is described comprising a first film layer comprising polylactic acid polymer (semicrystalline polylactic acid polymer; amorphous polylactic acid polymer; or a mixture thereof); a second (e.g. polyvinyl acetate) polymer having a Tg of at least 25°C; plasticizer. In some embodiment, the film layer further comprises inorganic pigment and/or hydrolysis stabilizer. In other embodiments, the film has a net melting endotherm, ∆Hnm1, of less than 10 J/g. Also described are methods of making a graphic film. L'invention concerne un article comprenant une première couche de film comprenant un polymère d'acide polylactique (polymère d'acide polylactique semi-cristallin; polymère d'acide polylactique amorphe; ou mélange de ceux-ci); un second polymère (par exemple, acétate de polyvinyle) ayant une Tg d'au moins 25 °C; un plastifiant. Dans un mode de réalisation, la couche de film comprend en outre un pigment inorganique et/ou un stabilisant d'hydrolyse. Dans d'autres modes de réalisation, le film a un endotherme de fusion net, ∆Hnm1, inférieur à 10 J/g. L'invention concerne également des procédés de production d'un film graphique.