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Ultrasonic (processes)

Process that utilizes specially-designed tooling usually vibrating at 15 – 80 kHz. Processes are designed to cause localized heating of thermoplastic materials that will cause some type of welded or fused joint to form. Benefits are the elimination of fillers and minimized heat stress on surrounding materials.




Undercutting

Light rays striking the white fibers of the mesh are reflected and scatter under the edges of the film.
Light is also conducted through the fibers leading to yet more undercutting. Result: blurred edges, colour shifts. Sefar yellow dyed mesh prevents undercutting.




Upstream side

The feed side of a filter.







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Sefar AG

Headquarters
Hinterbissaustrasse 12
9410 Heiden – Switzerland


Phone +41 71 898 57 00

Fax +41 71 898 57 21


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Sefar AG


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Headquarters
Hinterbissaustrasse 12
9410 Heiden – Switzerland


Teléfono


+41 71 898 57 00

Fax


+41 71 898 57 21

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