• 专利标题:   Packaging film useful for packaging retort food and medicinal material comprises first adhesive layer formed on sealant layer, core layer formed on first adhesive layer, second adhesive layer formed on core layer, and surface layer.
  • 专利号:   KR2229773-B1, EP3812148-A1, US2021122543-A1, JP2021066532-A, CN112693186-A
  • 发明人:   HEO J H, SOON P Y, KANGTAEWOON, HEO C H, PARK Y S, KANG T W, HEO C, PARK Y, KANG T
  • 专利权人:   HANKOOK ALUMINIUM CO LTD, KOREA ALUMINIUM CO LTD, KOREA ALUMINIUM CO LTD, KOREA ALUMINIUM CO LTD, KOREA ALUMINUM CO LTD
  • 国际专利分类:   B32B015/085, B32B015/09, B32B015/20, B32B027/20, B32B027/32, B32B027/34, B32B007/12, B32B015/08, B32B027/06, B32B027/08, B32B027/18, B65D065/40, B32B015/088, B32B037/10, B32B037/12, C08J005/12, C08J005/18, C09J011/04, C09J133/04, C09J005/00, B32B033/00, B32B007/022, B32B009/00, B32B009/04
  • 专利详细信息:   KR2229773-B1 22 Mar 2021 B32B-007/12 202130 Pages: 12
  • 申请详细信息:   KR2229773-B1 KR131682 13 Oct 2020
  • 优先权号:   KR131975, KR131682

▎ 摘  要

NOVELTY - Packaging film comprises a first adhesive layer formed on the sealant layer (10), a core layer (20) formed on the first adhesive layer, a second adhesive layer formed on the core layer, and a surface layer (30) formed on the second adhesive layer. At least one of the sealant layer, first adhesive layer (401), second adhesive layer, and surface layer contains graphene. The graphene increases the durability of the entire retort food packaging film, and reduces gas permeability and moisture permeability. The core layer includes an aluminum foil or an aluminum deposition layer. The content of the graphene is 0.005-3 pts. wt. based on 100 pts. wt. each layer excluding the core layer. USE - The film is useful for packaging retort food and medicinal material. ADVANTAGE - The film has good moisture, temperature, oxygen, or light barrier properties, good ductility and impact resistance, and good chemical resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing a film for packaging retort food comprising forming a sealant layer, a core layer, and a surface layer, and laminating the sealant layer, the core layer, and the surface layer. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the packaging film. Sealant layer (10) Core layer (20) Surface layer (30) Adhesive layer (40) First adhesive layer (401)