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・ UltraXML
・ ULTRAY2000
・ Ultraz
・ Ultrazang
・ Ultraísta
・ Ultre
・ Ultrid
・ Ultrix
・ Ultrix Window Manager
・ Ultron
・ Ultron (disambiguation)
・ Ultrose
・ Ultrox
・ Ultrasonic drug delivery
・ Ultrasonic flow meter
Ultrasonic foil (papermaking)
・ Ultrasonic force microscopy
・ Ultrasonic grating
・ Ultrasonic hearing
・ Ultrasonic horn
・ Ultrasonic hydroponic fogger
・ Ultrasonic impact treatment
・ Ultrasonic machining
・ Ultrasonic motor
・ Ultrasonic nozzle
・ Ultrasonic pulse velocity test
・ Ultrasonic soldering
・ Ultrasonic Studios, New Orleans
・ Ultrasonic testing
・ Ultrasonic thickness gauge


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Ultrasonic foil (papermaking) : ウィキペディア英語版
Ultrasonic foil (papermaking)

An Ultrasonic foil is part of the drainage table section of paper machines. A series of hydrofoil blades (called ''foils'') create pressure/vacuum pulses that dewater the fibre/water slurry (called ''stock'') on a moving conveyor belt (the ''wire''). Flexible ceramic foils have been used for years, but ultrasonic foils produce paper of higher quality. High power ultrasonics create millions of pressure pulses from imploding cavitation bubbles which keep the fibres apart, giving them a more uniform distribution. This ends up in better fibre formation, stronger paper and smoother paper surfaces.
==References==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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