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Proceedings Paper

Laser welding of micro plastic parts
Author(s): E. Haberstroh; W.-M. Hoffmann
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Paper Abstract

Most welding processes for plastics do not meet the demands of micro technology and thus cannot be applied in this innovative industrial sector. One of the few techniques which are applicable in this sector is the laser transmission welding, which has distinctive advantages like low mechanical and thermal load of the joining parts. This makes the laser particularly suitable for the welding of micro plastics parts. Thereby, contour welding is a process variant of laser transmission welding enabling the welding of complex and even three-dimensional weld contours. But so far it has not yet been applied for welding plastics parts of micro scale in the industrial practice. Recent research at the Institute of Plastics Processing (IKV) at the RWTH Aachen University shows the feasibility of this process to weld small and complex micro parts. Good mechanical properties can be achieved. However, it is necessary to apply measures to reduce the formation of flash. Moreover, it can be shown that there is a strong influence of some material parameters on the laser welding process so that some plastics are more suitable than others for the contour welding in micro technology.

Paper Details

Date Published: 20 March 2007
PDF: 8 pages
Proc. SPIE 6459, Laser-based Micro- and Nanopackaging and Assembly, 645903 (20 March 2007); doi: 10.1117/12.697561
Show Author Affiliations
E. Haberstroh, RWTH Aachen Univ. (Germany)
W.-M. Hoffmann, RWTH Aachen Univ. (Germany)


Published in SPIE Proceedings Vol. 6459:
Laser-based Micro- and Nanopackaging and Assembly
Wilhelm Pfleging; Yongfeng Lu; Kunihiko Washio; Friedrich G. Bachmann; Willem Hoving, Editor(s)

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