| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayered film which is heat-sealed in an envelope sealing process to package content in a cylindrical form and becomes a package, which is opened stably and easily, while achieving the original function for protecting the content. SOLUTION: The multilayered film is constituted by laminating a first heat-sealable polyolefin layer, a first adhesive layer, a polyamide layer, a weak adhesive layer having weak adhesive strength with respect to the polyamide layer, a second strong adhesive layer and a second heat-sealable polyolefin layer in this order. COPYRIGHT: (C)2007,JPO&INPIT
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