# US 2023/0272584 A1 · Multi-layer metallized paper-based packaging material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0272584 A1 - Document ID: US20230272584A1 - Status: Published application - Kind: A1 - Application number: 18/006,945 - Filed: 2021-07-16 - Published: 2023-08-31 - Earliest claimed: 2020-07-29 - Assignees: Societe des Produits Nestle S.A. - Applicants: Societe Des Produits Nestle S.A. - Inventors: ALEXEY VISHTAL; ABHIJIT BHATTACHARYA - Web page: https://patentgrep.com/patent/US20230272584A1 ## CPC - D21H 19/82: superposed {(D21H19/84 takes precedence)} - B32B 15/082: comprising vinyl resins; comprising acrylic resins - B32B 27/08: of synthetic resin - B32B 27/10: of paper or cardboard - B32B 27/20: using fillers, pigments, thixotroping agents - B32B 27/306: {comprising vinyl acetate or vinyl alcohol (co)polymers} - B32B 27/308: {comprising acrylic (co)polymers} - D21H 19/08: applied as vapour, e.g. in vacuum - D21H 27/10: Packing paper (packaging materials of special type or form B65D65/38) - B32B 2307/538: Roughness - B32B 2307/7244: Oxygen barrier - B32B 2307/7246: Water vapor barrier - B65D 65/42: Applications of coated or impregnated materials - D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES ## Abstract The present invention relates generally to the field of multi-layer packaging material. In particular, the present invention relates to a multi-layer metallized paper-based packaging material comprising a paper layer, a pre metallization coating layer, a metallized layer, and at least one post metallization coating layer. The present invention further relates to the use of the multi-layer metallized paper-based packaging material in accordance with the present invention to package food and to a food package manufactured from the multi-layer metallized paper-based packaging material. In one embodiment of the present invention the multi-layer metallized paper-based packaging material can be recycled with other paper packaging materials. ## Claims ### Claim 1 A multi-layer metallized paper-based packaging material comprising, from its outer side to its inner side: a paper layer having a grammage comprised in the range of 40 to 120 g/m2, at least one pre-metallization dispersion coating layer, a vacuum deposited metallization layer, and at least one post-metallization dispersion coating layer in an amount in the range of about 0.5-10 g/m2. ### Claim 2 (depends on 1) The multi-layer metallized paper-based packaging material in accordance with claim 1, wherein the post metallization coating layer comprises a post-metallization tie layer coating comprising an ethylene acrylic acid (EEA) copolymer dispersion, or another polyolefin dispersion functionalized with methacrylic and/or carboxyl acid groups. ### Claim 3 (depends on 1) The multi-layer metallized paper-based packaging material in accordance with claim 1, wherein the post-metallization coating layer further comprises a layer selected from the group consisting of a plain or mineral filled ethylvinylalcohol (EVOH), butylvinyl alcohol (BVOH) and polyvinylalcohol (PVOH) copolymer layer applied on top of the post-metallization tie layer coating. ### Claim 4 (depends on 3) The multi-layer metallized paper-based packaging material in accordance with claim 3, wherein the post-metallization coating comprises a layer selected from the group consisting of a plain or mineral filled ethylvinylalcohol (EVOH), butylvinyl alcohol (BVOH) and polyvinylalcohol (PVOH) copolymer layer in an amount in the range of about 0.5-10 g/m2. ### Claim 5 (depends on 1) The multi-layer metallized paper-based packaging material in accordance with claim 1, comprising a pre-metallization primer coating in an amount in the range of about 1-10 g/m2, a metallization coating in an amount equivalent to an optical density in the range of about 1 to 4, a post-metallization tie layer coating in an amount in the range of about 0.25-9.75 g/m2, and a layer comprising ethylvinylalcohol (EVOH), butylvinyl alcohol (BVOH) or polyvinylalcohol (PVOH) copolymers in an amount in the range of about 0.25-9.75 g/m2. ### Claim 6 (depends on 1) The multi-layer metallized paper-based packaging material in accordance with claim 1, wherein the metallized layer has a thickness in the range of 20-500 nm with an equivalent optical density in the range of about 1-4. ### Claim 7 (depends on 1) The multi-layer metallized paper-based packaging material in accordance with claim 1, wherein the packaging material has an overall thickness in the range of 30-150 μm. ### Claim 8 (depends on 1) The multi-layer metallized paper-based packaging material in accordance with claim 1, wherein the packaging material comprises a paper layer with a grammage in the range of about 40-120 g/m2 and back side Bekk smoothness in the range of about 300-1000 seconds, a pre-metallization coating layer, wherein the pre-metallization coating layer is applied in an amount of about 1-10 g/m2 and comprises an ethylene acrylic acid copolymer, an aluminium layer having a thickness in the range of 20-500 nm with an optical density of about 1-4. a post-metallization tie layer coating, wherein the post-metallization tie layer coating is applied in an amount of about 0.5-10 g/m2 and comprises an ethylene acrylic acid copolymer, and a post-metallization heat seal coating, wherein the post-metallization heat seal coating is applied in an amount of about 0.5-10 g/m2 and comprising mineral filled polyvinyl alcohol. ### Claim 9 (depends on 1) The multi-layer metallized paper-based packaging material in accordance with claim 1, wherein the packaging material is recyclable as paper and/or carton. ### Claim 10 (depends on 1) The multi-layer metallized paper-based packaging material in accordance with claim 1, wherein the packaging material has a WVTR barrier of below 1 g/m2d (23° C., 85% RH) and/or a OTR barrier below about 3 cm3/m2d bar (23° C., 50% RH) after folding the material to 180° under 2 kilograms of compressive load in such a manner that the coating side of the paper is under compressive stress during folding ### Claim 11 (canceled) ### Claim 12 Food packaging comprising multi-layer metallized paper-based packaging material comprising, from its outer side to its inner side: a paper layer having a grammage comprised in the range of 40 to 120 g/m2, at least one pre-metallization dispersion coating layer, a vacuum deposited metallization layer, and at least one post-metallization dispersion coating layer in an amount in the range of about 0.5-10 g/m2.