Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Patent
1996-06-19
1999-02-02
Crispino, Richard
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
310323, 310354, B29C 6508, H01L 41083
Patent
active
058659463
ABSTRACT:
An ultrasound sealing unit includes a drive unit and a body. The drive unit consists of a number of piezoelectric ceramic plates with interjacent, conductive metal sheets connected to an a.c. source. The drive unit further consists of a counterweight and a clamping screw. The clamping screw holds together under a certain pretensioning the ceramic plates, the metal sheets and the counterweight. Moreover, the clamping screw fixedly secures the drive unit to the body. The body is a homogeneous body consisting of reaction bodies which surround the drive unit, a nodal plane with an anchorage edge and a horn with an elongate, narrow sealing surface. A gasket is disposed so that it constitutes a spacer between the body of the sealing unit and the ceramic plates. The gasket permits the oscillation of the ultrasound sealing unit, but prevents residual flexural stresses from reaching the drive unit. The spacing dimension of the gasket may be selected so as to govern the amplitude of the sealing unit to a predetermined, preselected amplitude.
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Crispino Richard
Tetra Laval Holdings & Finance SA
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