MULTI-LAYER HIGH MOISTURE BARRIER POLYLACTIC ACID FILM
First Claim
1. A laminate film comprising:
- a biaxially oriented first layer comprising polylactic acid (PLA)a second layer comprising uncrosslinked ethylene vinyl alcohol (EVOH) or polyvinyl alcohol (PVOH) contiguously applied on a side of the first layer; and
a metal on a side of the second layer opposite the PLA-containing layer.
1 Assignment
0 Petitions
Accused Products
Abstract
A laminate film including a first polylactic acid layer; a second metal-receiving layer including PVOH, EVOH, or a blend thereof on a side of the first polylactic acid layer; and a metal layer deposited on a side of the metal-receiving layer opposite the polylactic acid layer. The metal-receiving layer may be coextruded with the polylactic acid first layer or may be a coating applied to one side of the polylactic acid first layer. This laminate film exhibits excellent gas and moisture barrier properties, appearance, and metal adhesion. It may also include a heat sealable or winding improving layer on the side opposite the metal receiving-layer of the first polylactic acid layer.
-
Citations
35 Claims
-
1. A laminate film comprising:
-
a biaxially oriented first layer comprising polylactic acid (PLA) a second layer comprising uncrosslinked ethylene vinyl alcohol (EVOH) or polyvinyl alcohol (PVOH) contiguously applied on a side of the first layer; and a metal on a side of the second layer opposite the PLA-containing layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method of manufacturing a laminate film comprising:
-
coextruding a first layer comprising polylactic and a second layer comprising ethylene vinyl alcohol (EVOH) or polyvinyl alcohol (PVOH) such that the second layer is contiguously applied on a side of the first layer; and vapor depositing a metal layer on a side of the second layer opposite the coextruded first layer. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method of making a laminate film comprising:
-
providing a first layer comprising polylactic; solution coating a second layer comprising ethylene vinyl alcohol (EVOH) or polyvinyl alcohol (PVOH) contiguously on a side of the first layer; and vapor depositing a metal layer on a side of the second layer opposite the coextruded first layer. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
Specification