Food packaging film and manufacturing method for making the same
AssigneeViskase Companies, Inc.
InventorsMyron D. NICHOLSON, Dmytro SHOSHYN
Life of this patent
Estimating the term…
Abstract
The present invention relates to a multilayer film, especially to a multilayer thermoplastic film, which may be used for food packaging, wherein the multilayer film according to the present invention may be provided, on its inner side, with a food additive, particularly with a flavoring and/or coloring and/or an aroma producing food additive (such as e.g. a liquid smoke), which food additive is then released and transferred onto the surface of a foodstuff encased in the multilayer film during cooking and/or processing of the foodstuff.
Claims31
1-17. (canceled)
A thermoplastic multilayer film to be used for food packaging,
- wherein the multilayer film comprises at least three polymeric layers and/or layer composites:
- (A) an inner layer composite, which inner layer composite is an inner food contacting layer composite, wherein the inner layer composite comprises a plurality of single inner layers attached and/or adhered to one another, wherein the single inner layers are each composed of at least one foamed polymer comprising at least one polyolefin and wherein the single inner layers each comprise a multitude of voids selected among open cells and pores and being capable of reversibly retaining and/or absorbing at least one food additive;
- (B) an outer layer composite, wherein the outer layer composite comprises a plurality of single outer layers attached and/or adhered to one another, wherein the single outer layers each comprise at least one polyamide;
- (C) an adhesive layer in the form of a tie layer disposed between the inner layer composite and the outer layer composite and adhered to the inner layer composite and the outer layer composite.
The multilayer film according to claim 1,
- wherein the at least one food additive comprises a flavoring and/or coloring and/or odoring food additive.
Dependencies are inferred from the claim text.