APPARATUS AND METHOD FOR CONTROLLING TEMPERATURE OF A FILM SEALING ELEMENT

摘要

Apparatus and method for controlling current input to an electrical resistance element such as a seal blade. A heating sensing element such as a thermocouple monitors the temperature of a component of the sealing jaw, such as a conductive mounting member supporting the seal element. When the sensed temperature is above or below a predetermined value, the duration of the impulse current is modified until the temperature falls within a predetermined range or to a predetermined value.