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US 8,858,985 B2Granted
Films comprising a liquid-absorbant inner layer, an antimicrobial material and an impermeable outer layer
AssigneeE. I. Du Pont de Nemours and Company
InventorsI-Hwa Lee, Karlheinz Hausmann
Life of this patent
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Abstract
Films comprising a liquid-absorbent layer with an adsorbed antimicrobial material and an impermeable layer are provided. The films can be suitable for preparation of tubular casings and shrinkbags such as casings for foodstuffs. Also disclosed are foodstuffs processed in the tubular casing comprising the antimicrobial material.
Claims17
A laminate film comprising (i) an inner layer;
- (ii) at least one antimicrobial agent;
- and (iii) an outer layer;
- wherein the film is biaxially oriented;
- the inner layer is a block copolyether ester polymer and has absorbed therein or therewith a solution of the antimicrobial agent;
- the outer layer is a single film layer, a laminate, or a multilayer film comprising or produced from at least one polymer layer and optionally at least one tie layer;
- and the polymer layer comprises or is produced from a polymer selected from the group consisting of polyamide, ethylene vinyl alcohol copolymer, polyvinylidene chloride, polyolefins, and combinations of two or more thereof.
3 more elements
Dependencies are inferred from the claim text.