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Technology and equipment for ultrasound welding of components made of polyethylene terephthalate film

A technology of ultrasound seam welding of polyethylene terephthalate films has been developed and ultrasound welding equipment and waveguides with spherical working ends constructed. The amplitude–frequency characteristics of acoustic systems are analysed. The dependence of the strength of welded joints on frequency, welding pressure, welding speed and the amplitude of ultrasound oscillations is determined.