# US 2013/0251925 A1 · Multilayer heat-shrinkable film and containers made therefrom > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0251925 A1 - Document ID: US20130251925A1 - Status: Published application - Kind: A1 - Application number: 13/991,773 - Filed: 2011-12-05 - Published: 2013-09-26 - Earliest claimed: 2010-12-09 - Assignees: Cryovac, Inc. - Inventors: Mario Paleari; Tiziano Scapoli; Romano Spigaroli; Giuliano Zanaboni; Flavio Fusarpoli - Web page: https://patentgrep.com/patent/US20130251925A1 ## CPC - C09J 7/35: Heat-activated - B32B 27/08: of synthetic resin - B32B 27/30: comprising vinyl {(co)polymers; comprising acrylic (co)polymers} - B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF} - B32B 27/306: {comprising vinyl acetate or vinyl alcohol (co)polymers} - B32B 27/308: {comprising acrylic (co)polymers} - B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} - B65D 75/00: Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers (bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles, or bales of material B65D71/00) - B32B 2250/24: All layers being polymeric - B32B 2270/00: Resin or rubber layer containing a blend of at least two different polymers - B32B 2307/31: Heat sealable - B32B 2307/518: bi-axially - B32B 2307/581: Resistant to cut - B32B 2307/7244: Oxygen barrier - B32B 2307/736: Shrinkable - B32B 2439/00: Containers; Receptacles - B32B 2439/46: Bags - Y10T 428/1328: Shrinkable or shrunk [e.g., due to heat, solvent, volatile agent, restraint removal, etc.] - Y10T 428/2826: Synthetic resin or polymer - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A multilayer heat-shrinkable film comprising: a) an outer heat sealable layer b) at least one layer comprising a blend of ethylene homopolymer and/or ethylene alfa olefin copolymers and ethylene vinyl acetate copolymer, c) at least one internal gas-barrier layer, and d) at least one layer comprising a material selected from the group consisting of acrylate-based resin and acrylic acid-based resin, and blends thereof with ethylene homopolymer and/or ethylene/alpha-olefin (E/AO) copolymer and/or adhesive materials and flexible packaging containers made therefrom. ## Claims ### Claim at position 1 1-15. (canceled) ### Claim 16 A multilayer heat-shrinkable film comprising: a) an outer heat sealable layer, b) a layer comprising a blend of ethylene homopolymer, ethylene/alpha-olefin copolymer, and/or ethylene/vinyl acetate copolymer, c) an internal gas-barrier layer, and d) a layer comprising a material selected from the group consisting of acrylate-based resin, acrylic acid-based resin, and blends thereof with ethylene homopolymer and/or ethylene/alpha-olefin copolymer and/or an adhesive material. ### Claim 17 (depends on 16) The film according to claim 16 in which the outer heat sealable layer comprises a polyolefin and/or an ethylene/alpha-olefin copolymer. ### Claim 18 (depends on 17) The film according to claim 17, wherein the outer heat sealable layer comprises a blend of homogeneous ethylene/alpha-olefin copolymer or a blend of homogeneous ethylene/alpha-olefin copolymer and linear low density polyethylene, or blends of homogeneous ethylene/alpha-olefin copolymer with ethylene/vinyl acetate copolymer, ethylene/methyl acrylate copolymer, and/or polyolefin block copolymer. ### Claim 19 (depends on 16) The film according to claim 16, wherein layer b) comprises a blend of from 90 to 30 weight percent of ethylene homopolymer and/or ethylene/alpha-olefin copolymer with from 10 to 70 weight percent of ethylene/vinyl acetate copolymer. ### Claim 20 (depends on 19) The film according to claim 19, wherein layer b) comprises a blend of from 75 to 65 weight percent of ethylene homopolymer and/or ethylene/alpha-olefin copolymer with from 25 to 35 weight percent of ethylene/vinyl acetate copolymer. ### Claim 21 (depends on 16) The film according to claim 16, wherein said internal gas-barrier layer comprises polyvinylidene chloride copolymer, polyvinylidene chloride/vinylchloride copolymer, and/or polyvinylidene chloride/methyl acrylate copolymer. ### Claim 22 (depends on 16) The film according to claim 16, wherein layer d) comprises a blend in which the acrylic/acrylate resin is from 80 to 20 percent by weight. ### Claim 23 (depends on 22) The film according to claim 22, wherein layer d) comprises a blend in which the acrylic/acrylate resin is from 50 to 35 percent by weight. ### Claim 24 (depends on 16) The film according to claim 16, wherein layer d) comprises a blend of the acrylate-based resin and/or acrylic acid-based resin with ethylene homopolymer and/or ethylene/alpha-olefin copolymer. ### Claim 25 (depends on 24) The film according to claim 24, wherein layer d) comprises a blend of acrylic acid-based resin with ethylene homopolymer and/or ethylene/alpha-olefin copolymer. ### Claim 26 (depends on 16) The film according to claim 16, wherein layer d) is an internal layer between the outer heat sealable layer a) and the internal gas-barrier layer c). ### Claim 27 (depends on 16) The film according to claim 16, further comprising: e) an internal layer comprising an adhesive material and/or ethylene/vinyl acetate copolymer. ### Claim 28 (depends on 16) The film according to claim 16, further comprising: f) an outer skin layer comprising polyolefin and/or an ethylene/alpha-olefin copolymer. ### Claim 29 (depends on 16) The film according to claim 16, wherein the film has from 4 to 9 layers. ### Claim 30 (depends on 16) A heat shrinkable flexible container obtained by self-sealing the film according to claim 16. ### Claim 31 (depends on 30) The container according to claim 30, in the form of an end-seal bag, a side seal bag, or a pouch. ### Claim 32 (depends on 31) The container according to claim 31, wherein the container is in the form of a V-shaped side-seal bag. ### Claim 33 (depends on 30) The container according to claim 30, further comprising at least one tear initiator. ### Claim 34 (depends on 30) A package comprising a product packaged in a flexible container according to claim 30. ### Claim 35 (depends on 16, 30) A process for making a flexible container according to claim 30, comprising the step of self-sealing a film according to claim 16.