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Glossary

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.

Contact

Sefar Inc.

111 Calumet Street
Buffalo, NY 14043 – USA

Phone 800 995 0531

Fax +1 716 685 9469

Send e-mail

Filtration & Separation


Screen Printing


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