Multi-layer flexible packaging material
AssigneeSociete des Produits Nestle S.A.
InventorsAlexey Vishtal, Hock Seng Gordon Soh
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Abstract
The present invention relates generally to the field of multi-layer flexible packaging material. In particularly, the present invention relates to a multi-layer flexible packaging material comprising a paper layer, an aluminium layer, a nanoclay barrier coating layer, and a sealing layer applied to the surface of the nanoclay barrier coating layer representing the inner surface of the multi-layer flexible packaging material, said multilayer flexible barrier material being deprived of a polyolefin layer, such as a polyethylene (PE), polyethylene terepthalate (PET) or a polypropylene (PP) layer. The present invention further relates to the use of the multi-layer flexible packaging material in accordance with the present invention to package dry food.
Claims12
A multi-layer flexible packaging material comprising the following layers from an outer surface to an inner surface:
- an aluminium layer having a thickness in the range of 20-500 nm,
- a paper layer having a grammage of 40 to 120 g/m2,
- a nanoclay barrier coating layer having a grammage in the range of 0.4-4 g/m2,
- a sealing layer applied to a surface of the nanoclay barrier coating layer representing the inner surface of the multi-layer flexible packaging material, wherein the sealing layer is selected from the group consisting of acrylic acid copolymers, vinyl acetate, ethyl vinyl acetate, modified xylanes, chemically modified starch, and combinations thereof,
- and the multi-layer flexible packaging material being deprived of a polyolefin layer.
Dependencies are inferred from the claim text.