| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate the irregularity in temperature generated when the rotation of roll body is stopped and realize a more stable seal at the time of starting its sealing operation. <P>SOLUTION: A control device drives an arm turning means 61 when a seal interrupting instruction is detected. With this operation, an arm 33 is turned to cause a seal roll 19 to be spaced apart from a film receiving roll 18. Then, after this operation, a pre-heating control is carried out with the control device. More practically speaking, a turning driving motor of a turning driving means 81 is driven in compliance with the heating of the seal roll 19. With this operation, the roll body of the seal roll 19 is rotated. In the case that a temperature variation of the roll body in its peripheral direction becomes sufficiently low, the pre-heating control operation is finished and the arm turning means 61 is driven. With this arrangement as above, the arm 33 is turned, the seal roll 19 becomes a press-contact state where the seal roll 19 is in press contact with the film receiving roll 18 and then the sealing operation performed with the sealing device is started. <P>COPYRIGHT: (C)2007,JPO&INPIT |
