Sonotrode

摘要

Sonotrode (1) comprising: a head (15) which defines a sealing surface (14) elongated along a first direction (A) orthogonal to a second direction (B) and at least one first slot (23, 27) which extends through head (15) transversally to said first direction (A); first slot (23) extends parallel to a third direction (C; D) inclined to both first direction and second direction (A, B); third direction (C; D) defines a acute angle (±, ²) with second direction (B).