• 专利标题:   Antibacterial high barrier multi-layer co-extruded biaxially oriented polypropylene light film comprises surface layer attached to both sides of barrier layer and surface material obtained by blending and extruding styrene-butadiene-styrene block copolymer and polypropylene block copolymer.
  • 专利号:   CN114889282-A
  • 发明人:   WANG J, XIE H, LIN Y, SUN F, CHEN K
  • 专利权人:   QIMING NEW MATERIAL CO LTD
  • 国际专利分类:   B29C048/08, B29C048/18, B29C055/12, B29C069/02, B29L007/00, B29L009/00, B32B027/08, B32B027/30, B32B027/34, B32B009/00, B32B009/04, C08J005/18, C08L023/14, C08L053/00, C08L053/02
  • 专利详细信息:   CN114889282-A 12 Aug 2022 B32B-027/34 202291 Chinese
  • 申请详细信息:   CN114889282-A CN10681658 16 Jun 2022
  • 优先权号:   CN10681658

▎ 摘  要

NOVELTY - Antibacterial high barrier multi-layer co-extruded biaxially oriented polypropylene light film comprises a surface layer is attached to both sides of a barrier layer. The material of the barrier layer is hyper-branched polyamide/graphene oxide composite. The surface material is obtained by blending and extruding random copolymer polypropylene, styrene-butadiene-styrene block copolymer and polypropylene block copolymer. The hyper-branched polyamide/graphene oxide composite is obtained by exfoliating graphene oxide from the hyper-branched polyamide. USE - Used as antibacterial high barrier multi-layer co-extruded biaxially oriented polypropylene light film. ADVANTAGE - The film has good interface compatibility between graphene oxide and hyperbranched polyamide/graphene oxide composite. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing antibacterial high barrier multi-layer co-extruded biaxially oriented polypropylene light film comprising adding the surface layer material into a single-screw extruder, melting, extruding at 190-220℃ to obtain surface layer molten material, extruding the surface layer molten material, hyper-branched polyamide/graphene oxide composite and surface layer molten material from a single-screw extruder into a three-layer die, extruding into a thin sheet and biaxially stretching to obtain antibacterial high barrier multi-layer co-extruded biaxially oriented polypropylene light film.