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US 2022/0064394 A1Published application
Multilayer film with biomolecule based barrier coating
AssigneeTaghleef Industries Inc.
InventorsWalter NOSOTTI, Stefano FARRIS, Duncan KIM
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Abstract
The invention relates to a multilayer film including a substrate film, a biopolymer-based gas and/or water vapor barrier coating and optionally additional layers such as metal or metal oxide barrier layers and so-called primers that is applied to any one film layer to promote the adhesion another film layer or to printing inks, that can be used for many different applications, in particular the food and biomedical fields.
Claims34
A multilayer film comprising:
- a substrate film comprising an inner face, an outer face, a base film and optionally a metal or metal oxide barrier coating deposited on an outer face of the base film such that the outer face of the metal or metal oxide barrier coating forms the outer face of the substrate film;
- and
- a biopolymer coating layer disposed on the outer face of the substrate film,
- wherein the outer face of the substrate film has a surface tension suitable for adhesion to the biopolymer coating layer, and the multilayer film has at least one of gas barrier properties and vapor barrier properties.
1 more element
Dependencies are inferred from the claim text.