| 摘要 |
PURPOSE:To reverse a strip like bag body with good workability using a small- sized device. CONSTITUTION:The flow passage 4 having a small cross-sectional area continued to a hermetically closed space S is formed and a strip like bag body 20 is inserted in the flow passage 4 through the valve 10 provided to the flow passage 4 and the reversal part of the strip like bag body 20 is allowed to face to the interior of the hermetically closed space S and compressed air is supplied into the hermetically closed space S while water is allowed to flow through the flow passage 4 under pressure higher than that of the compressed air. Since the hermetically closed space S is sealed with water whose pressure is higher than that of the compressed air, the size of a reversal device can be kept constant even when the internal pressure of the hermetically closed space S is changed different from a conventional method taking the balance of the pressure in the hermetically closed space S by head difference and the reversal device 1 can be made small and compact and workability is further enhanced. |
