Method for ultrasonic welding with particles trapping
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United States of America Patent
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May 22, 2018
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app pub date -
Mar 11, 2016
filing date -
Sep 17, 2013
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Abstract
The present invention relates to a method of connecting two components by ultrasonic welding for producing a power semiconductor module, said method comprising the steps of: a) Aligning the components to be welded to form a welding interface; b) Aligning a welding tool to the aligned components; c) Removably arranging a trapping material at least partly encompassing the welding interface, whereby the trapping material is a foam; and d) Connecting the components by activating the welding tool. The method like described above provides an easy and cost-saving measure in order to prevent particle contamination when performing a welding process such as particularly an ultrasonic welding process sue to scattered particles.
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