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US 2014/0349047 A1Published application
Multilayer Films
AssigneePlantic Technologies Ltd.
InventorsNicholas John McCaffrey, Roya Khalil, Nicholas Roy Oakley, Brendan Morris
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Abstract
There is provided a multilayer film comprising a starch layer and at least one other layer. The multilayer film has excellent barrier properties. The starch layer comprises a modified starch having a degree of substitution less than 1.5. Suitable other layers include polyolefins. The multilayer film finds use in packaging, particularly in packaging foodstuffs.
Claims24
A multilayer film comprising:
- (a) at least one starch layer comprising a modified starch;
- and
- (b) at least one other layer having a water vapour permeability coefficient less than 1 g·mm/m2·24 hr·atm measured at 38° C. and 90% relative humidity;
- and
- wherein the total thickness of the at least one starch layer is greater than 20% of the total thickness of the multilayer film and wherein the modified starch has a degree of substitution less than 1.5.
2 more elements
(canceled)
Dependencies are inferred from the claim text.