Ultrasonic composite machine in the composite process of the material adhesion is not strong how to do?

The weak adhesion of materials may be caused by the following reasons:

Insufficient power: Check if the ultrasonic power is sufficient and increase the power if necessary. 

Uneven pressure: Ensure even pressure distribution during the composite process. 

Material issue: Check for contamination or improper surface treatment of the material. 

Improper temperature setting: Check the temperature setting of the equipment to ensure it meets the melting point of the material. 

Transducer issue: Check if the transducer is working properly and repair or replace it if necessary.