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Ultrasonic fusion line design of ultrasonic plastic welding machine

Ultrasonic plastic welding utilizes the heating caused by the impact effect of contact dissociation of the welding surface, or the heating caused by the compression of alternating sinusoidal stress applied to the welding surface. There is currently no clear conclusion for these two theories. It is also possible that these two heating effects occur simultaneously. No matter what, it is always this kind of heating that causes the welding surfaces to melt and combine, so ultrasonic welding of plastics is sometimes called ultrasonic welding or ultrasonic bonding.

The absorption of ultrasonic energy varies depending on the plastic material. The ultrasonic vibration is not the whole, but selective heating occurs locally. For example, by sandwiching a hard plastic or adhesive with good absorption between hard plastics, the hard plastic can be welded without generating much heat. . During welding, ultrasonic waves propagate through the plastic and reach the joint surface, where they cause heat generation and welding. In harder plastics, ultrasonic waves propagate more easily.

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