| 摘要 |
PROBLEM TO BE SOLVED: To provide a bag body for a bag-in-box which is excellent in a bag- making property because of the excellent sliding property and in the appearance and which has a film excellent in a pinholeresistant and the breaking strength when using the product and at the same time which does not bring a blocking between the inner and outer bag films when charging a hot pack. SOLUTION: This multiple bag is a bag body for a bag-in-box provided with a grommet G. The bag body is constituted of at least two or more films. In this case, the innermost film FL of the multiple bag is three or more layers- coextrusion film made of ethylene-αolefin copolymer polymerized with a single site catalyst. A rugged face of 1-20μm is provided in the normal direction of one side face (noncontct face with liquid) of the innermost film FL. Three or more multi-layer film is constituted in the order of higher densities, the outermost layer 3 of 0.915-0.965, the innermost layer 1 of 0.910-0.920, and the intermediate layer 2 of 0.890-0.920.
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