| 摘要 |
PURPOSE:To reduce the consumption of sealing film by a method wherein an intermittent driving device and a stopping device are provided for a driving shaft of a pinch roller and the driving shaft of the pinch roller is connected to a driving source of a pack transfer device corresponding to the sealing film feed amount. CONSTITUTION:A driving shaft 33a of a pinch roller 33A is connected to a driving source of a pack transfer device 20 by the action of a clutch 39A, and new sealing film is sent from a feed drum 31 toward a sealing position S by an amount set on an encoder 38 by the pinch rollers 33A and 33B. When the sealing film 12 is sent out by the amount set on the encoder 38, a film supply device 30 brings the clutch 39A in locked state and a brake 39B in action, so that the sealing film is released from restriction of the pinch rollers 33A and 33B and the supply of the sealing film 12 is stopped. |
