Welding device for plastic bags and method of heating its heating strips

摘要: The system according to the invention allows plastic bags be very securely sealed by welding, using a compact apparatus. device uses multiplexing of electrical energy sent into heating strips welding tongs. Specifically, are heated successive waves following one after another in an offset and alternating manner, so that, at each instant, only strip is supplied with power. Thus, overall relatively constant low level. Application tongs for used handling contaminated materials gloveboxes.