For cutting the belt, compared to ultrasonic slitting machine, belt cutting machine (cold cutting) can also cut and seal the
edge and its price is lower than ultrasonic slitting machine, why still we use ultrasonic slitting machine? The answer is
that although ultrasonic slitting machine is more expensive than belt cutting machine, it can make the cutting side
smoother. For example, ultrasonic slitting machine can make clean and precise cut for the velcro in quite short a time,
and automatically cool and weld the edge. What’s more, because the ultrasonic wave is characterized by its instant
heating, it will not melt large areas of materials like hot cutting. That’s why the cutting side made by ultrasonic slitting
machine seems more soft and smooth, and it will not turn black or become scorched.
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