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 (19). A thermocouple (27) monitors the temperatures of a part of the sealing jaw (10, 12), such as the conductive mounting member. If the sensed temperature varies from a predetermined value, the impulse current duration is modified until the temperature reaches a predetermined range.