| 摘要 |
PURPOSE: To easily peel a lid from the surface of a container by destructing an intermediate layer by forming an intermediate heat-sealing layer consisting of a granular filler and an olefin polymer mixture. CONSTITUTION: An intermediate heat-sealing layer contains about 30-30 wt.% granular filler, about 20-45 wt.% olefin homopolymer, about 20-50 wt.% highly crystalline polylene/ethylene block copolymer and about 10-10 wt.% elastic ethylene/propylene rubber. The laminated structure of a container 11 consists of an inner gas barrier core layer 14, the thermoplastic adhesive layers 15, 16 parallelly arranged to the respective surfaces of the barrier layer 14, the outside polyolefin layers 17, 18 for protecting the adhesive layers 15, 16 and a cohesive heat-sealing layer 19. A lid 13 has an aluminum foil 21, thermoplastic adhesive layers 22, 23 and an olefin layer 24. The lid 13 is placed on the heat- sealing layer 19 of the container 11 to be heated and pressed to form a hermetic seal. |
