Environmentally-friendly multi-layer flexible film having barrier properties
A multi-layer film with barrier properties having one or more layers made from a bio-based film is disclosed. In one aspect, a multi-layer packaging film including(a) an outer layer including a bio-based film, wherein the bio-based film is polyhydroxy-alkanoate, wherein the bio-based film includes a graphic image, (b) an adhesive layer adjacent to the outer layer and (c) a product side layer including a metalized polyolefin having barrier properties, wherein the multi-layer packaging film is a flexible film.
1. A multi-layer packaging film comprising:
a) an outer layer consisting essentially of a bio-based film, wherein said bio-based film is selected from the group consisting of polyhydroxy-alkanoate, wherein said bio-based film further comprises a graphic image;
b) an adhesive layer adjacent to said outer layer; and
c) a product side layer comprising a metalized polyolefin having barrier properties, wherein said multi-layer packaging film is a flexible film.
2. The film of claim 1 wherein said bio-based film comprises at least 25% of said multi-layer packaging film by weight.
3. The film of claim 1 wherein said bio-based film further comprises a stearate additive.
4. The multilayer packaging film of claim 1 further comprising a nanoclay.
5. The multilayer packaging film of claim 1 further comprising a nanocomposite.
6. The multilayer packaging film of claim 5 further comprising a scavenger.
7. A snack food package made from a multi-layer flexible film having barrier properties, said flexible film comprising a bio-based film having a graphic image and a metalized oriented polypropylene layer, wherein said bio-based film has a glass transition temperature and is insoluble in water at temperatures below said glass transition temperature, and wherein said bio-based film consists essentially of polylactide, wherein said snack food package consists essentially of said multi-layer flexible film.
8. The snack food package of claim 7 further comprising a nanocomposite.
9. The snack food package of claim 8 further comprising a scavenger.
10. The snack food package of claim 7 further comprising a nanoclay.