FIELD: packing of products into cartons of thermoplastic material, food processing industry. SUBSTANCE: device has pulse generator 1, pulse counter 2, initiation unit 3 with sensor 4 of start of cycle, JK flip-flop 8 which direct output is connected to heater 11 via power amplifier 9 and triac 10, time-setting unit 5, 3AND gate 6 and 2OR gate 7. Proposed device makes it possible to conduct coarse and fine adjustment of temperature of heater which enhances accuracy of setting of required temperature of heater for any type of thermoplastic film and therefore improves quality of joint. EFFECT: improved quality of joints. 2 dwg
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