MULTI-LAYERED THERMOPLASTIC POLYMER FILMS COMPRISING BIOPOLYMER

摘要

A multi-layered film comprising at least 3, preferably at least 5, layers is provided. In the case of a 5 layered film, the multi-layer film includes a first outer layer having 80% to 100% by weight of one or more polyolefins, a first tie layer having from 5% to 100% by weight of the first tie layer of one or more functionalized polyolefins, a core layer having from 75% to 100% by weight of the core layer of polylactic acid, a second tie layer having from 5% to 100% by weight of second tie layer of one or more functionalized polyolefins, and a second outer layer having from 80% to 100% by weight of the second outer layer of one or more polyolefins, and wherein the first tie layer layer is disposed between the first outer layer and the core layer the second tie layer is disposed between the core layer and the second outer layer.

主权项

1. A multi-layered film comprising at least 5 layers and having a total thickness from 10 microns to 100 microns, wherein the film comprises:
(a) a first outer layer, comprising from 75% to 100% by weight of one or more polyolefins; (b) a first tie layer comprising from 5% to 100% by weight of the first tie layer of one or more functionalized polyolefins; (c) a core layer comprising from 75% to 100% by weight of the core layer of polylactic acid, wherein the multi-layer film has a total volume and the core layer comprises from 5% to 30% of the total volume of the film; (d) a second tie layer comprising from 5% to 100% by weight of second tie layer of one or more functionalized polyolefins; and (e) a second outer layer comprising from 75% to 100% by weight of the second outer layer of one or more polyolefins; and wherein the first tie layer layer is disposed between the first outer layer and the core layer the second tie layer is disposed between the core layer and the second outer layer.