| 摘要 |
PROBLEM TO BE SOLVED: To adequately suppress increase of the production cost of fusion-bonding means, to prevent lowering of the productivity following replacement of the fusion-bonding means, and to effectively prevent excessive extrusion of fused sealant layer of a packaging film to a storage space by lowering of the surface pressure by holding the packaging film with the fusion-bonding means even when forming a pour-out passage in a lateral fusion-bonding section.SOLUTION: One or two laminated packaging films including a sealant layer is fusion-bonded to form a packaging bag. The packaging bag has an opening for filling an object to be packaged, and in the packaging bag, a narrow pour-out passage communicating to a storage space for the object to be packaged is defined in at least one position in conventional longitudinal and lateral fusion-bonding sections and a fusion-bonding section for sealing the opening for filling the object to be packaged. Also in the packaging bag, a peeling layer for inhibiting the fusion bonding of a packaging film is provided on only one interior surface of the defined pour-out passage. |
