FIELD: process engineering.
SUBSTANCE: invention may be used for ultrasonic welding of film layers or other thin materials, preferably, made from plastic materials or metals, for example, aluminium. Intake clearance 6 to accommodate film layers to be welded together is arranged between working surface 11 of radiator 8 and working surface 12 of thrust 7 of ultrasonic device 1. Radiator 8 or thrust 7 is arranged to apply welding force with component (ϑ) directed in welding opposite gravity force (G) to prevent displacement of welding line.
EFFECT: higher quality of weld seams.
9 cl, 4 dwg
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