# US 12,179,979 B2 · Film composite, film packaging, and method for the production of a film composite > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,179,979 B2 - Document ID: US12179979B2 - Status: Granted - Kind: B2 - Application number: 17/825,065 - Filed: 2022-05-26 - Published: 2022-12-08 - Granted: 2024-12-31 - Earliest claimed: 2021-06-01 - Assignees: Mondi AG - Applicants: Mondi AG - Inventors: Andreas Hagemann; Helga Elling; Andreas Neumann - Web page: https://patentgrep.com/patent/US12179979B2 ## CPC - B32B 3/04: characterised by {at least one} layer folded at the edge, e.g. over another layer {; characterised by at least one layer enveloping or enclosing a material} - B65D 65/42: Applications of coated or impregnated materials - B05D 3/12: by mechanical means - B05D 7/54: {No clear coat specified} - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 27/08: of synthetic resin - B32B 27/16: specially treated, e.g. irradiated - B32B 27/20: using fillers, pigments, thixotroping agents - B32B 27/26: using curing agents - B32B 27/28: comprising synthetic resins not wholly covered by any one of the sub-groups {B32B27/30 - B32B27/42} - B32B 27/281: {comprising polyimides} - B32B 27/306: {comprising vinyl acetate or vinyl alcohol (co)polymers} - B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} - B32B 27/40: comprising polyurethanes - B65D 65/40: Applications of laminates for particular packaging purposes {(B65D1/0215, B65D1/28, B65D3/22, B65D5/0281, B65D5/563, B65D9/30, B65D29/02, B65D31/02, B65D75/26, B65D77/2024, B65D81/1275, B65D81/3811, B65D81/3823, B65D81/3834, B65D81/3846, B65D81/3858, B65D81/3874, B65D81/3886, B65D81/3897 take precedence; laminates per se or laminated packages characterised by the composition or)} - B32B 2250/24: All layers being polymeric - B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer - B32B 2255/26: Polymeric coating - B32B 2264/102: Oxide or hydroxide - B32B 2307/4023: on the layer surface, e.g. ink - B32B 2307/718: Weight, e.g. weight per square meter - B32B 2307/732: Dimensional properties - B32B 2307/75: Printability - B32B 2439/70: Food packaging - B32B 2553/00: Packaging equipment or accessories 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 - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) ## Abstract A film composite for film packaging, having a cover film composed of a polyolefin and a barrier layer, wherein the cover film has an imprinting, at least in part, on a side that faces the barrier layer. An equalization layer is arranged between the cover film and the barrier layer, which layer borders, at least in part, on the imprinting, wherein the equalization layer is formed from a hardened material on the basis of polyurethane. ## Claims ### Claim 1 A film composite for film packaging, comprising a cover film composed of a polyolefin, a barrier layer, and an equalization layer arranged between the cover film and the barrier layer, the equalization film directly bordering the barrier layer, a lamination layer in the form of an adhesive layer based on polyurethane, the lamination layer directly bordering the barrier layer on a side opposite the equalization layer, and a carrier film directly bordering the lamination layer, wherein the cover film has an imprinting, at least in part, on a side that faces the barrier layer, wherein the equalization layer borders, at least in part, on the imprinting, and wherein the equalization layer is formed from a hardened material on the basis of polyurethane, wherein the barrier layer is formed on the basis of polyvinyl alcohol (PVOH) and wherein the barrier layer has a weight per surface area between 0.5 g/m2 and 2.5 g/m2. ### Claim 2 (depends on 1) The film composite according to claim 1, wherein the hardened material is a polyurethane varnish. ### Claim 3 (depends on 1) The film composite according to claim 1, wherein the proportion of polyolefin, with reference to the total film composite, amounts to more than 90 wt.-%. ### Claim 4 (depends on 1) The film composite according to claim 1, wherein solid particles are arranged in the equalization layer. ### Claim 5 (depends on 4) The film composite according to claim 4, wherein the proportion of the solid particles in the equalization layer amounts to between 5 and 50 vol.-%. ### Claim 6 (depends on 4) The film composite according to claim 4, wherein the solid particles have an average diameter between 150 and 800 nm. ### Claim 7 (depends on 4) The film composite according to claim 4, wherein the solid particles are titanium dioxide particles, at least in part. ### Claim 8 (depends on 1) The film composite according to claim 1, wherein the imprinting does not extend over the full area of the cover film, and wherein the equalization layer encloses the imprinting in such a manner that the equalization layer forms an essentially level surface on the side bordering on the barrier layer. ### Claim 9 (depends on 1) The film composite according to claim 1, wherein the equalization layer has a weight per surface area between 0.5 g/m2 and 2.5 g/m2. ### Claim 10 (depends on 1) The film composite according to claim 1, wherein the barrier layer has a proportion of polyethylenimine (PEI). ### Claim 11 (depends on 10) The film composite according to claim 10, wherein the proportion of polyethylenimine in the barrier layer amounts to between 0.5 and 1.5 wt.-%. ### Claim 12 (depends on 1) The film composite according to claim 1, wherein the polyolefin of the cover film is a polyethylene. ### Claim 13 (depends on 1) The film composite according to claim 1, wherein the carrier film is formed from a polyolefin. ### Claim 14 (depends on 1) A film packaging composed of a film composite according to claim 1, wherein the film composite delimits a packaging interior in such a manner that the cover film forms an outside. ### Claim 15 (depends on 1) A method for the production of a film composite according to claim 1, comprising the steps of: providing the cover film; imprinting the cover film at least in part; coating the cover film with a hardenable material, so as to form the equalization layer on the at least partially imprinted side, which material has at least a proportion of polyurethane; and after hardening, coating the equalization layer with a material for forming the barrier layer. ### Claim 16 (depends on 15) The method according to claim 15, wherein the material for forming the barrier layer is formed from a liquid solvent and a proportion of polyvinyl alcohol in solid form. ### Claim 17 (depends on 15) The method according to claim 15, wherein the hardenable material of the equalization layer is smoothed after being applied. ### Claim 18 (depends on 15) The method according to claim 15, wherein the cover film is connected with a carrier film, with the inclusion of a lamination layer.