Advantages of Ultrasonic Plastic Welding 

The ultrasonic welding technology sets itself apart with fast welding speeds, high welding strength and good sealing performance. This is a suitable replacement for traditional welding/bonding processes. The process is clean because it doesn't use harmful solvents or glues while also not damaging the product. This technology is also easy to implement in a production process and has a low fault rate. As a bonus, all of these advantages help lower production costs. 

Disadvantages of Ultrasonic Plastic Welding 

When the thickness and hardness of the plastic parts are increased, the power required for welding increases exponentially related to the parameters of the plastics. This increases the manufacturing cost of the ultrasonic welding machine. If the power requirement is too large, the design and manufacturing of the acoustic system and the process effects will produce a series of problems that are difficult to solve. Therefore, the technology is more generally limited to thin parts such as wires, foils, and sheets. The state of this technology limits the joint form of the ultrasonic welding system to lap joints and is limited by the tool head. The parts can only protrude within the allowable size range of the welding system. The welded joint form and the size range are limited.

These limitations mean that the parts that are to be welded need to be precisely designed to take the most advantage of this process.