| 摘要 |
PURPOSE:To perform a stable heat-welding of a film while the heater temperature (heating temperature) is adjusted always to the most suitable temperature for each 1 cycle packaging motion. CONSTITUTION:For a heater control method for a packaging device being equipped with a heat-sealing device for which current for heating is supplied to heater 16 only when a film edge is heat-welded, after the supply of a current for heating to the heater 16 is completed, a power non-supply period of time is counted by a timer, and a power supply period of time for this time is determined by the counted power non-supply period of time, and a current for heating is supplied to the heater 16 for the power supply period of time. By this method, an unfavorable heat-welding with an incomplete welding condition, or the sticking of a film to the heater 16 due to a film melting, etc., can be prevented, and a stable heat-welding of film 2 can be performed while the heater temperature is adjusted always to the most suitable temperature for each 1 cycle packaging motion. |
