| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylene multilayered sealant film for a retort containing no air bubbles at the laminating interface with a heat-resistant film, excellent in laminate appearance, capable of easily taking out content after retort processing and capable of performing heat sealing at a relatively low temperature. SOLUTION: The polypropylene multilayered sealant film is constituted so that a heat sealing layer is mainly formed from a propylene/ethylene random copolymer or a block copolymer of the propylene/ethylene random copolymer and anα-olefin/propylene polymer (a), high density polyethylene (b), an antiblocking agent (c) with a mean particle size of 3-12μm and an organic lubricant (d), (a)-(d) are adjusted so as to become a predetermined compositional ratio and the melt flow rate and melting point of (a) and the melt fclow rate of (b) are adjusted so as to become predetermined numerical values. COPYRIGHT: (C)2005,JPO&NCIPI
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