US 12,459,715 B2
Multi-layer flexible packaging material
Alexey Vishtal, Lausanne (CH); and Hock Seng Gordon Soh, Punggol Drive (SG)
Assigned to Societe des Produits Nestle S.A., Vevey (CH)
Appl. No. 17/904,234
Filed by SOCIETE DES PRODUITS NESTLE S.A., Vevey (CH)
PCT Filed Feb. 17, 2021, PCT No. PCT/EP2021/053833
§ 371(c)(1), (2) Date Aug. 15, 2022,
PCT Pub. No. WO2021/165290, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 20157788 (EP), filed on Feb. 17, 2020.
Prior Publication US 2023/0087382 A1, Mar. 23, 2023
Int. Cl. B65D 65/42 (2006.01); D21H 11/14 (2006.01); D21H 19/08 (2006.01); D21H 19/22 (2006.01); D21H 19/40 (2006.01); D21H 19/60 (2006.01); D21H 19/84 (2006.01); D21H 27/10 (2006.01)
CPC B65D 65/42 (2013.01) [D21H 11/14 (2013.01); D21H 19/08 (2013.01); D21H 19/22 (2013.01); D21H 19/40 (2013.01); D21H 19/60 (2013.01); D21H 19/84 (2013.01); D21H 27/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. 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.