| 摘要 |
PROBLEM TO BE SOLVED: To prevent the discharge of the excess molten material to a space in the bag body by stagnating the discharge of an excess molten material produced when a bag body is heated and fused to a support part of a bag like tank. SOLUTION: The support part 23 of the bag-like tank 22 is formed from a melting resin material, a circular small-diameter fusing part 29 for fusing an opening 24A side of an inner bag 24 is provided on the outer peripheral surface of a small diameter part 23A of the support part 23 and a circular large-diameter fusing part 31 for fusing the opening 25A side of an outer bag 25 is provided on the outer peripheral surface of a large diameter part 23B. Molten material traps 30A, 30B are provided at a position adjacent to the small-diameter fusing part 29 and a molten material trap 32 is provided at a position adjacent to the large-diameter fusing part 31. As a result, the excess molten materials 34, 35 run over from a fused surface between the support part 23 and the inner bag 24, outer bag 25 are stored in the molten material traps 30A, 30B and the molten material trap 32. COPYRIGHT: (C)2010,JPO&INPIT |
