| 摘要 |
PROBLEM TO BE SOLVED: To stably keep the temperature of a filament by obtaining the information from a software disk by a controller in which the change of the season or the container forming condition, or the like, and controlling the current application condition to the filament corresponding to the power supply cut time. SOLUTION: When a batch-system vacuum packaging machine is used, a bag 42 with a work to be packaged stored therein is placed on a base 41, and a mouth of the bag is placed resting on a seal base 43. When a lid body 45 is turned in the closing direction, a switch 49 is turned on, and the air in the bag 42 is removed through a hose 50, a seal bar 47 having a filament 48 on a lower side is lowered by an actuator 46 to impulse-seal the mouth of the bag 42. The temperature change of the seal bar 47 corresponding to the length of the power supply cut time is detected while taking the record data from a software disk, and the current applied to the seal bar 47 is controlled so that the heat applied to the mouth is continuously unified. |
