B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 7/12 (2006.01) B32B 27/30 (2006.01) B32B 27/36 (2006.01) B65D 65/02 (2006.01) B65D 65/40 (2006.01) B65D 65/46 (2006.01) B65D 75/26 (2006.01) B65D 81/20 (2006.01)
Patent
CA 2685260
Polymeric films having a first layer of polylactic acid, a second layer of polyvinyl alcohol and at least one intermediate layer of a blend of polylactic acid with polyvinyl alcohol and/or starch, the intermediate layer or layers providing adhesion between the polylactic acid layer and the polyvinyl alcohol layer. Such films are environmentally friendly and have good impact strengths which enable them to be used to package relatively heavy loads of fresh produce such as potatoes.
Les films polymères selon l'invention comportent une première couche d'acide polylactique, une seconde couche d'alcool polyvinylique et au moins une couche intermédiaire d'un mélange d'acide polylactique avec de l'alcool polyvinylique et/ou de l'amidon, la ou les couches intermédiaires apportant l'adhérence entre la couche d'acide polylactique et la couche d'acide polyvinylique. Ces films sont écologiques et ont une bonne résistance aux impacts qui permet de les utiliser pour emballer des charges relativement lourdes de produit frais tel que des pommes de terre.
Evap Environmentals Limited
Gowling Lafleur Henderson Llp
LandOfFree
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