What is ultrasonic bonding?
Ultrasonic bonding assembles two or more layers of material (usually nonwoven) between a vibrating horn and a rotary drum. Machined into the drum is a pattern of raised areas, which is where the bonding takes place. The high frequency mechanical motion of the vibrating horn combined with the compressive force between the horn and the drum create frictional heat at the point where the horn contacts the materials. Ultrasonic bonding results in a high degree of softness and breathability, which are important characteristics of nonwoven products.
