Biaxially oriented metallized polylactic acid film with high metal adhesion and high barrier properties
AssigneesToray Plastics (America), Inc., Toray Industries, Inc.
InventorsMark S. Lee, Claudio M. Paulino, Takeshi Mizumura, Keunsuk P. Chang, Nao Yokota, Jun'ichi Masuda
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Abstract
Metallized multi-layer biaxially oriented polylactic acid base polymer (BOPLA) films that exhibits improved barrier properties and metal adhesion. The films include a core layer including crystalline polylactic acid base polymer, a first skin layer consisting essentially of amorphous polylactic acid base polymer, and a metal layer on the first skin layer. The films may include a second skin layer consisting essentially of amorphous polylactic acid base polymer.
Claims31
A multilayer film comprising:
- a core layer comprising polylactic acid base polymer;
- a first skin layer consisting essentially of amorphous polylactic acid base polymer;
- and
- a metal layer on the first skin layer.
A biaxially oriented multilayer film comprising:
- a core layer comprising polylactic acid base polymer;
- a first skin layer consisting essentially of amorphous polylactic acid base polymer;
- and
- a metal layer on the first skin layer.
A method of making a multilayer film comprising:
- co-extruding a core layer comprising polylactic acid base polymer and a first skin layer consisting essentially of amorphous polylactic acid base polymer;
- and
- depositing a metal layer on the first skin layer.
Dependencies are inferred from the claim text.