UltraSonic Welding (USW) is the process of joining two parts by converting electrical energy into heat energy by high frequency mechanical vibration, which is suitable for both plastics and metals. One part of the assembly is set in motion in order to cause intense friction between the two pieces, one of which remains held in place. This movement is provided by a vibrating component called a sonotrode which is applied at right angles to the surface of the part to be welded.
Friction is localized at the interface of the assembly. The resulting heat quickly melts the plastic which flows and causes a chemical bond. After it has cooled, a solid homogeneous weld between the two components is formed. The vibration frequency of the sonotrode is 20 to 40 kHz which is outside the perception limit of the human ear.
Ultrasonic plastics’ welding and its advantages:
One-piece Hollow Core Technology (HCT) promotes a stiffer more consistent roll. In addition, USW allows us to keep our HCT while developing an entirely new Energy Management Technology system (EMT). This is a breakthrough for elite inline racing because it is the first ever there’s been a hollow core with energy management control, giving back nearly all the energy put in to it. Not only does Matter have superior urethane, we also understand the importance of making the urethane and core work coherently in order to optimize roll, grip, wear and overall performance for indoor, road, track and marathon racing.