Ultrasonic welding

The ultrasonic energy is transmitted to the weld area through the upper weldment, and due to the large acoustic resistance at the weld area, that is, the interface of the two welds, local high temperatures are generated. Due to the poor thermal conductivity of the plastic, it cannot be distributed in time for a while and gathers in the welding area, resulting in the rapid melting of the contact surface of the two plastics, and after a certain pressure, it is integrated into one. When the ultrasonic stops acting, let the pressure continue, some pressure holding time, so that it solidifies, thus forming a strong molecular chain, to achieve the purpose of welding, welding strength can be close to the raw material body strength.

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