US 11,724,844 B2
Ultrasonic sealing device
Fabio Soci, Modena (IT); Luca Gentili, Piceno (IT); Fabrizio Sighinolfi, Nonantola (IT); and Massimiliano Barbi, Castelfranco Emilia (IT)
Assigned to Tetra Laval Holdings & Finance S.A., Pully (CH)
Appl. No. 17/286,840
Filed by Tetra Laval Holdings & Finance S.A., Pully (CH)
PCT Filed Oct. 3, 2019, PCT No. PCT/EP2019/076833
§ 371(c)(1), (2) Date Apr. 20, 2021,
PCT Pub. No. WO2020/083625, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 18202267 (EP), filed on Oct. 24, 2018.
Prior Publication US 2021/0347510 A1, Nov. 11, 2021
Int. Cl. B29C 65/08 (2006.01); B65B 51/22 (2006.01); B29C 65/00 (2006.01)
CPC B65B 51/225 (2013.01) [B29C 65/08 (2013.01); B29C 66/1122 (2013.01); B29C 66/849 (2013.01)] 16 Claims
OG exemplary drawing
 
1. 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.