Ultrasonic sealing device
AssigneeTetra Laval Holdings & Finance S.A.
InventorsFabio Soci, Luca Gentili, Fabrizio Sighinolfi, Massimiliano Barbi
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Abstract
An ultrasonic sealing device including a sonotrode for sealing a packaging material, including a piezoelectric transducer to generate ultrasonic acoustic vibrations for the sealing, a housing, a power circuit connected to the piezoelectric transducer. The power circuit is enclosed in the housing, and an absorbent arranged in the housing to absorb moisture in an atmosphere therein to lower humidity. A method of controlling humidity in an ultrasonic sealing device is also described.
Claims16
An ultrasonic sealing device comprising:
- a sonotrode for sealing a packaging material comprising:
- a piezoelectric transducer to generate ultrasonic acoustic vibrations for said sealing,
- a housing,
- a power circuit connected to the piezoelectric transducer, wherein the power circuit is enclosed in the housing,
- an absorbent arranged in the housing to absorb moisture in an atmosphere therein to lower humidity,
- a frame, wherein the sonotrode and the housing are attached to the frame, and
- a track guide configured to engage with a track so that the frame is movable along the track.
A method of controlling humidity in an ultrasonic sealing device having:
- a piezoelectric transducer of a sonotrode to generate ultrasonic acoustic vibrations for sealing a packaging material, a power circuit enclosed in a housing and being connected to the piezoelectric transducer, a frame, wherein the sonotrode and the housing are attached to the frame, and a track guide configured to engage with a track so that the frame is movable along the track;
- the method comprising:
- absorbing moisture in an atmosphere in the housing with an absorbent arranged in the housing.
A method comprising using an absorbent in a housing of an ultrasonic sealing device, the housing enclosing a power circuit connected to a piezoelectric transducer of a sonotrode to generate ultrasonic acoustic vibrations for sealing a packaging material with said ultrasonic sealing device;
- wherein the ultrasonic sealing device comprises a frame, wherein the sonotrode and the housing are attached to the frame, and a track guide configured to engage with a track so that the frame is movable along the track.
Dependencies are inferred from the claim text.