| 摘要 |
PURPOSE:To bring the title package to a predetermined sealing strength and to make the package easily unsealable by providing a container, which is obtained through continuously thinning the innermost layer plastic film layer of the inside annular part of a flange, with a cover material. CONSTITUTION:The tile package is constituted in such manner that easily cohesive failing plastic 4-2 and plastic film 4-3 having no easily cohesive failing properties adhere in a fused state to a container base material 4-1. When a container 1 is made from these multi-layer sheets and films, a projected stripe 3-2, which is recessed on the base material 4-1 and projected on the innermost layer 4-3 side, is provided in the inside annular part 3-1 in a flange 11. Then, the innermost layer plastic film layer 4-3 is thinned, when the tip of the projected stripe 3-2 is hot-pressed by a heat embossing board. After that, the container 1 is filled with contents and covered with a cover material 2 and a heat-seal ring 7. When the end 8 of the cover material is pulled up at the time of unsealing, an intermediate layer 4-2 cohesiveness fails in the position indicated by a two-dot chain line while cutting occurs in the thinnest part (h) of the innermost layer plastic film 4-3 to perform unsealing. |
