| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polypropylene-based multi-layer film for a lid material, improved for shortening a heat seal time. <P>SOLUTION: The polypropylene-based multi-layer film 1 for the lid material is a laminate film formed of at least three layers including a base material layer 2, an intermediate layer 3 and a seal layer 4. The base material layer 2 is formed of a resin substantially composed of propylene homopolymer. The intermediate layer 2 is formed of a resin composed of propylene random copolymer. The seal layer 4 is formed of a resin composed by blending a propylene-based resin 5-20 pts.wt. with ethylene-based resin 100 pts.wt. <P>COPYRIGHT: (C)2012,JPO&INPIT |
