Ultrasonic welding apparatus

Details Ultrasonic welding apparatus Ultrasonic welding apparatus

B - Operations, Transporting

29

C

B29C 65/14 (2006.01) B23K 20/10 (2006.01) B29C 65/08 (2006.01) B65B 13/32 (2006.01)

Patent

CA 2467495

In an ultrasonic welding apparatus comprising an ultrasonic sonotrode and a backing plate, flat workpieces to be welded are pressed between the sonotrode and the backing plate. Projections are provided on a portion of the surface of the sonotrode and on a portion of the surface of the backing plate, each projection-bearing surface portion being adjoined by a smooth portion. The flat workpieces are for example ends of a strapping tape formed in a loop around a package in a strapping machine and the aim is to produce a weld of increased strength.

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