Tetra Laval Holdings & Finance S.a.

Sergio Mancin

Francesco Giordano

Antonio Melandri

Ernesto Di Dodo

Magnus Råbe

Ulrich Voegler

Javier Herzog-Gisbert

Ulrich Vögler

There is disclosed a sonotrode comprising: a head which defines a sealing surface elongated along a first direction orthogonal to a second direction and at least one first slot which extends through the head transversally to the first direction; the first slot extends parallel to a third direction inclined to both the first direction and the second direction; the first direction defines an acute angle with the second direction.

Sonotrode

A sonotrode comprising: a head defining a sealing surface elongated along a first direction; and a first and a second drive unit distinct from one another, each comprising at least one piezo-electric element; wherein first and second drive unit may be electrically fed by an unique generator to cause oscillation of head; the height of head measured along a second direction transversal to sealing surface being substantially equal to half the wavelength of wave oscillating in second direction; at least one slot extending through head transversally to first and second direction; a finite number of nodal points at which amplitude of oscillation of head is substantially equal to zero; and a plane on which at least some nodal points lie and which divides head in a first portion and second portion; the slot extends completely within one only between first and second portion and at a certain distance by plane.

A sealing jaw for producing sealed packages of a food product from a tube of packaging material fed along a path, the jaw having a first work surface which interacts with a second work surface on a counter-jaw to grip the packaging material and form a sealing strip crosswise to the path. One of the jaw and counter-jaw defines an anvil, and the other defines a heating device which interacts with the anvil to form the strip. The first surface has at least two projections elongated along respective first axes, and which, when forming the strip, compress respective areas of the packaging material against the second surface; and at least one cavity which extends along one of the first axes, is interposed between the projections along a second axis crosswise to the first axis, and is located laterally with respect to a central plane of the first work surface.

Sealing jaw for producing sealed packages of a food product

A sealing jaw for producing sealed packages of a food product from a tube of packaging material includes a supporting body, and a first work surface which interacts, in use, with a second work surface on a further jaw to grip the material to be sealed and perform a sealing operation; one of the jaws defines an anvil, and the other of the jaws defines heating means; the jaw has connecting means for connecting the first surface to the supporting body; the connecting means define a curved third and a curved fourth surface made of rigid material and cooperating mutually to allow the first surface to oscillate with respect to the supporting body when gripping the packaging material prior to the sealing operation.

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Fidenza, Italy

Sergio Mancin