公开(公告)号：WO2021127063A1

公开(公告)日：2021-06-24

申请号：PCT/US2020/065444

申请日：2020-12-16

Applicant: DUKANE IAS, LLC

Inventor： VASKO, Petr ,  VIZEK, Jiri ,  BENDA, Arnošt ,  KLINSTEIN, Leo

IPC: B29C65/08 ,  B29K101/12 ,  B29L31/30 ,  B29L31/34 ,  B29C2795/002 ,  B29C66/006 ,  B29C66/112 ,  B29C66/131 ,  B29C66/348 ,  B29C66/43 ,  B29C66/474 ,  B29C66/532 ,  B29C66/61 ,  B29C66/723 ,  B29C66/73521 ,  B29C66/73921 ,  B29C66/81429 ,  B29C66/81431 ,  B29C66/81433 ,  B29C66/8246 ,  B29C66/8322 ,  B29C66/9241 ,  B29C66/9261 ,  B29C66/939 ,  B29C66/9513 ,  B29C66/9517 ,  B29L2031/3044 ,  B29L2031/3481

Abstract: An ultrasonic welding method for joining a first thermoplastic part and a second thermoplastic part without causing visible read-through on an exposed surface of the second part. The method includes arranging the first part on an inner surface of the second part. The inner surface is opposite the exposed surface. The first part has an interface portion contacting the inner surface. The method includes causing a horn of an ultrasonic welding stack to be pressed against the first part by applying ultrasonic energy oscillating at a frequency in a range of 45-70 kHz through the horn, to thereby join the first part and the second part together. The horn has at least one protruding distal portion configured to penetrate through the first part as the ultrasonic energy is imparted through the horn. The distal portion has a length longer than a thickness of the first part. A collapse distance of a weld formed at the interface portion is less than the thickness of the first part, to avoid read-through effects on the exposed surface of the second part.

公开(公告)号：WO2021262001A1

公开(公告)日：2021-12-30

申请号：PCT/NL2021/050397

申请日：2021-06-23

Applicant: TECHNISCHE UNIVERSITEIT DELFT

Inventor： JONGBLOED, Bram Cornelius Petrus ,  VILLEGAS, Irene Fernandez ,  TEUWEN, Julie Jan Edouard

IPC: B29C65/08 ,  B29C65/82 ,  B29K81/00 ,  B29K63/00 ,  B29K105/08 ,  B29K307/04 ,  B29L31/30 ,  B29C65/8215 ,  B29C65/8253 ,  B29C66/0322 ,  B29C66/1122 ,  B29C66/3024 ,  B29C66/342 ,  B29C66/43 ,  B29C66/71 ,  B29C66/7212 ,  B29C66/72141 ,  B29C66/73921 ,  B29C66/73941 ,  B29C66/8122 ,  B29C66/81422 ,  B29C66/836 ,  B29C66/91221 ,  B29C66/91943 ,  B29C66/91951 ,  B29C66/92445 ,  B29C66/929 ,  B29C66/939 ,  B29C66/9517 ,  B29L2031/3076 ,  B29L2031/3097

Abstract: The invention provides a sonotrode (100) for welding a material, the sonotrode (100) comprising a welding section (110) configured for contacting the material, wherein the welding section (110) defines a rounded shape (111) in a cross-section parallel to a longitudinal axis (A) of the sonotrode (100), wherein the rounded shape (111) approximates a circular sector (20), wherein the circular sector (20) has a central angle αc selected from the range of 25º-300º, and wherein the circular sector (20) has a central radius rc selected from the range of 5-30 mm, and wherein the sonotrode (100) 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.