Because not everything can be welded by an ultrasonic welding machine, the plastic product material is not properly matched, and ultrasonic welding will not be possible:  The melting point of each plastic material is different. For example, the melting point of ABS plastic material is about 115°C, and that of PC For example, if the temperature is above 145°C and PE is about 85°C, the difference in melting point between ABS and PE is too large, so ultrasonic welding is bound to be difficult. There is also a gap between the two materials of ABS and PC, but the gap is not as large as the previous item. Therefore, it can be welded, but under the same ultrasonic power and energy expansion, different plastic materials cannot be compared. The welding effect of the same material is good.

According to the above chart, we can see that many plastics of different materials can be ultrasonically welded, but some plastics of the same material cannot be ultrasonically welded. For materials that are more difficult to weld, it is necessary to select ultrasonic welding equipment with larger power and stronger amplitude according to the characteristics of the material and the specific structure of the product. Some products require a higher frequency machine to be welded. It needs to be judged by professional and technical personnel.