Ultrasonic Welding
USW
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Definition:
A localized method of welding or sealing thermoplastics in which heat is generated by vibration caused by ultrasonic energies at frequencies of 20 to 40 kHz. Ultrasonic vibrations converted from electrical energy by a transducer are directed to the area to be welded by means of a horn, and localized heat is generated by the friction of vibration at the surfaces to be joined. The process is most effective for rigid and semi-rigid plastics, since the energy is rapidly dissipated in soft flexible materials. Also known as ULTRASONIC SEALING. Larger composite sections are welded using sequential welding or scan welding.
Definition Copyright ©1989 CRC Press LLC. All rights
reserved.
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