Polypropylene packaging film

Patent Name Polypropylene Packaging Film Patent Applicant Asahi Kasei Life Products Co., Ltd. Principal Applicant Address Tokyo, Japan Inventor Takashi Yoshiwara; Hashimoto Chihichi; Nakao Tatsu Application (Patent) No. 03820421.5 Date of Application 2003.08.26 Certification Date Approval Notice No. 1678456 Auditing Announcement Date 2005.10.05 Specification CD-ROM D0540 Main Classification Number B32B27/32 Classification Number B32B27/32 Classification Original Application No. Priority Item 2002.8.29 JP 250192/2002 Abstract The present invention provides a polypropylene-based multilayer packaging film, the nature of which With minor changes over time, the film consists of a skin layer (A) and a core layer (B) consisting of 100 parts by weight of the composition, 5 to 15 parts by weight of a hydrogenated terpene resin and 10 to 20 parts by weight A portion of an aliphatic hydrocarbon material that is liquid at room temperature and comprises 50 to 80% by weight of a crystalline polypropylene resin and 20 to 50% by weight of propylene selected from amorphous or low-crystalline The α-olefin copolymer and the 1-butene polymer are composed of at least one softener, and the core layer (B) comprises 80 to 98% by weight of a crystalline polypropylene resin and 2 to 20% by weight at room temperature. Liquid Aliphatic Made of a material. Sovereign Items 1. Polypropylene-based multilayer packaging film comprising: (A) a surface layer comprising a first composition, and 5 to 15 parts by weight of (S3) hydrogen hydride with respect to 100 parts by weight of the first composition The ene resin and 10 to 20 parts by weight of an aliphatic hydrocarbon (S4) that is liquid at normal temperature, the first composition includes 50 to 80% by weight of the (S1) crystalline polypropylene resin and 20 to 50% by weight ( S2) at least one softening agent selected from the group consisting of amorphous or low crystalline propylene-alpha olefin copolymers and 1-butene polymers; and (B) core layer adjacent to the skin layers, comprising 80-98 wt% The (C1) crystalline polypropylene resin and 2 to 20% by weight of (C2) are aliphatic hydrocarbons that are liquid at room temperature. International Application PCT/JP2003/010797 2003.8.26 International Publication WO2004/020195 Date 2004.3.11 Date of Entry into the Country Patent Agency Zhongyuan Xinda Intellectual Property Agency Co., Ltd. Agency address Fan Weimin; Yang Qing