| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a bag body having a fastener made of a film having sufficient sealing strength, cold resistance, heat resistance, and substantial transparency, in which only a single-layer film comprising a resin composition having a polyamide as a main component is used without requiring other resin layer as a sealant layer. SOLUTION: A bag body is made of a film comprising 60wt.%-90wt.% polyamide, as a first component, whose crystalline melting point is in the range of 190 deg.C-270 deg.C, and one or more 40-10wt.% resins, as second components, selected from the group consisting of ethylene-acrylic acid copolymer, ethylene- methacrylic acid copolymer, an ethylene-acrylic alkyl ester copolymer, and an ethyelen-methacrylate alkyl ester copolymer.</p> |
