| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily and reliably control the insertion depth of a packaging bag in a housing and fit and weld a tube, and to reliably discharge content stored in the packaging bag. <P>SOLUTION: An inner bag A comprises a packaging bag 1 having a housing fitting port 1a, a cylindrical part 4 integrated with synthetic resin and having a storage part 3 of a valve mechanism B, a welded part 5 of a substantially diamond shape in plan view which is formed on a bottom part 3a side of the storage part 3 and comprises an arc-shaped part 5a and an extension part 5b with an outline dimension smaller than the outside diameter of the cylindrical part 4, a tubular member 6 which extends from the bottom part 3a in a protruding manner from an end of the welded part with the outside diameter thereof smaller than the diameter of the arc-shaped part 5a and has a communication hole 6a at the center thereof, a housing 2 which is formed between the inside of the welded part 5 and the outside of the tubular member 6 and has a passage 7 to be conducted to the storage part 3, and a tube 14 fitted to the tubular member 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
