| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve mechanism, which can be used without considering the nozzle diameter of a suction device, does not damage another sealed bag stacked on the outer surface of or next to a sealed bag with the valve mechanism, and makes a load of sealed bags stacked or adjacent to each other flat and stable. SOLUTION: The valve mechanism comprises a flat suction connection 2, which is fitted on the exterior side of a sealed bag with a hole and has a vent hole 2a at the center of the suction connection 2, and a valve base material 3, which is fitted on the interior side of the sealed bag and has a recessed section. With the valve mechanism, it is only necessary to make the nozzle of the suction device in contact with the suction connection 2 to cover its vent hole 2a, which is different from a case where the suction device nozzle has to be connected to a projected connection on the sealed bag exterior, thus the valve mechanism can be used without considering the nozzle diameter of the suction device. By using the valve mechanism, the projected portion on the sealed bag exterior is eliminated to prevent damage to another sealed bag stacked on the outer surface of or next to the sealed bag with the valve mechanism and make a load of sealed bags stacked or adjacent to each other flat and stable. COPYRIGHT: (C)2005,JPO&NCIPI
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