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US 2010/0075164 A1Published application
Polyamide multilayer film
AssigneeCryovac, Inc.
InventorsSolomon Bekele, Michael D. Esakov
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Abstract
A multilayer film comprises first, second, and third layers. The second layer is directly adhered to the first and third layers. The first layer comprises at least about 40 wt % of one or more modified polyamides. The second layer comprises at least about 40 wt % of one or more unmodified polyamides. The third layer comprises at least about 40 wt % of one or more selected tie polymers. The film may comprise one or more UV light absorbers. The film has good intra-film bond strength.
Claims22
A multilayer film comprising:
- a first layer comprising at least about 40% of one or more modified polyamides, based on the weight of the first layer;
- a second layer comprising at least about 40% of one or more unmodified polyamides, based on the weight of the second layer;
- and
- a third layer comprising at least about 40% of one or more tie polymers selected from ethylene/vinyl acetate copolymer, ethylene/(meth)acrylic acid copolymer, ethylene/C1-C12 alkyl (meth)acrylate copolymer, and anhydride-modified polyolefin, based on the weight of the third layer;
- wherein
- the second layer is directly adhered to the first and third layers.
3 more elements
Dependencies are inferred from the claim text.