Article:

 New Innovations in Quasi-simultaneous Laser Welding of Polymers for Mass-production Applications (ALAC 2005)

Author:

 Jansson, A., Kouvo, S.

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Scanner technology has been used in the past years in various laser applications, because of it’s capability to move the laser beam very fast and accurately. Quasi-simultaneous laser welding of polymers also uses scanner technology to move the laser beam rapidly several times across the welding path heating it up gradually until the entire weld is melted almost at the same time. In addition to the very short welding times, which are needed in mass-production applications, quasi-simultaneous laser welding enables a wider process window, a larger gap bridging capability and higher weld strengths compared to contour welding. With the new process developments even 3D-welding in mass-production is possible with the quasi-simultaneous laser welding technique. The possibility to use the quasi-simultaneous laser welding technique in mass-production applications was investigated in this study. Results of weldability with very short welding times and gap bridging capability are presented. Also new strategies for welding of 3D-geometries with the quasi-simultaneous welding technique will be presented.