Systems and Methods for Non-Perpendicular Ultrasonic Plastic Welding

摘要

Systems for ultrasonically welding described herein include a sonotrode for delivering ultrasonic vibrations to two or more plastic sheets, so as to form a weld between them. The sonotrode and the plastic sheets are arranged such that the ultrasonic vibrations delivered by the sonotrode travel along a path that is oriented at an angle alpha with respect to a tangent to the surface being welded, wherein the angle alpha is less than 90 degrees. Methods for ultrasonically welding described herein include providing two or more plastic sheets to be welded together and delivering ultrasonic vibrations to form a weld between them, such that the ultrasonic vibrations travel along a path that is oriented at an angle alpha with respect to a tangent to the surface being welded, wherein the angle alpha is less than 90 degrees.