What is Ultrasonic Lamination?
Ultrasonic lamination uses the conversion of acoustic energy to heat to form spot welds of specific size in exact locations. This technique is an ideal method to join sheets of different or similar materials (nonwovens, films, composites, or fabrics) into a single composite or laminate. The layers of raw material are arranged and brought together as in any traditional lamination process to pass over a central rotating roll or “anvil”. ILLUSTRATION 1 Instead of the uniform smooth surface roll used for pressure bonding, Ultrasonic Laminating uses a pattern of dots on the anvil or “pattern” roll. Each dot is the site of an individual bond across all layers of the lamination. NP OPEN DIAMOND Accoustic energy is generated from a “horn”. Each horn is individually powered so that its output can be exactly tuned to a series of pulses. Each pulse is a pressure wave that acts as a tiny hammer, impacting the material over the dot tens of thousands of times per second. The degree of bonding at eac
