| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealant film which has easy openability, can obtain drop impact strength high enough to protect contents, and is suitable for a package filled with foods, medical instruments, miscellaneous goods or the like, and to provide a laminate of the sealant films.SOLUTION: An easily openable co-extrusion multilayer film includes a substrate layer (A), an intermediate layer (B), and a seal layer (C). The substrate layer (A) comprises a resin composition prepared by mixing 10-90 wt.% of a low density polyethylene (a1) and 90-10 wt.% of a high density polyethylene (a2). The intermediate layer (B) comprises a resin composition prepared by mixing 99-80 wt.% of a polyethylene resin (b1) and 1-20 wt.% of a propylene resin (b2). The seal layer (C) has a thickness of 20 μm or less and contains as a main component a polypropylene resin (c) and contains at least 30 wt.% of polypropylene synthesized using a single-site catalyst. |
