Ultrasonic technology has been used for more than 70 years to join thermoplastics (plastics) or thermoplastics with other materials. Furthermore, it is possible to use this technology for cutting and separation welding of a wide variety of materials.
Ultrasonic is generated by high-frequency vibrations: A generator produces a high-frequency alternating voltage from the applied supply voltage, which is converted into a mechanical oscillation by means of a converter. Through oscillating movements (frequency range approximately 20 kHz to 100 kHz) at the sonotrode surface (amplitude), energy is introduced into the components. The energy leads to heating exclusively at the boundary surfaces of the individual components and does not affect the adjacent areas, which means that the component is processed gently. The strong bond is then formed in the short time it takes for the joining partners to cool down. The result of joining is a clean and stable joint seam between the two individual parts, and in the case of cutting and cut-off welding, a clean and flawless cut surface.
Ultrasonic technology is a very good alternative to other joining and separating processes with high efficiency and further future-oriented possibilities. In contrast to other processes, ultrasonic processes – whether cutting, sealing, welding, cut-off welding, punching, riveting – do not cause any damage to the product itself.