| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealant film providing a sealed package capable simply of opening while having high heat seal strength without depending on a heat seal condition.SOLUTION: There is provided a multilayer sealant film having a laminate layer as an outermost layer, at least one intermediate layer and a heat seal layer as another outermost layer and used by laminating the laminate layer on a substrate film as a sticking surface, where the laminate layer consists of a resin containing a polybutene-based resin of 30 to 70 pts.wt., a linear low density polyethylene resin of 20 to 60 pts.wt. and a low density polyethylene resin having density of 0.930 g/cmor more of 10 to 50 pts.wt., at least one intermediate layer contains at least 80 wt.% of a polypropylene resin, the heat seal layer consists of a resin containing a propylene-based random polymer and a crystallinity by an IR method is in a range of 40 to 65%. |
