B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 20/10 (2006.01) B06B 3/00 (2006.01) B29C 65/08 (2006.01)
Patent
CA 2119038
Disclosed is a device for being fixedly secured in a machine to ultrasonically seal together two plastic layers along a long and narrow sealing joint, the device comprising a cylindrically shaped drive unit for being connected to an A.C. current source to generate an oscillation, a horn which oscillates during operation of the drive unit and which has one end at which is mounted the drive unit and an opposite end, the opposite end of the horn having a long and narrow end surface which defines a sealing surface for producing a long and narrow sealing joint during operation of the drive unit, and at least one reaction body mounted at the one end of the horn for assimilating counter forces created during oscillation of the horn to produce a nodal plane located below the drive unit, the at least one reaction body and the horn together defining a length of the device which is half a wave length.
Olsson Hakan
Rabe Magnus
Marks & Clerk
Tetra Laval Holdings & Finance S.a.
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