Technische Universiteit Delft

Irene Fernandez Villegas

Bram Cornelius Petrus Jongbloed

Julie Jan Edouard Teuwen

The invention provides a sonotrode () for welding a material, the sonotrode () comprising a welding section () configured for contacting the material, wherein the welding section () defines a rounded shape () in a cross-section parallel to a longitudinal axis (A) of the sonotrode (), wherein the rounded shape () approximates a circular sector (), wherein the circular sector () has a central angle αselected from the range of 25°-300°, and wherein the circular sector () has a central radius rselected from the range of 5-30 mm, and wherein the sonotrode () has a width W perpendicular to the longitudinal axis (A) [and to the cross-section], wherein W is selected from the range of 10-100 mm.

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Delft, Netherlands

Irene Fernandez Villegas