Energy director for ultrasonic weld joint

摘要

A multi-faceted energy director (15) is provided for joining two plastic workpieces (12) (14) by an ultrasonic welding method. The energy directors (15) include at least first and second facets (16) (17) arranged in perpendicular fashion, so as to engage two surfaces. A method for joining at least two ultrathin plastic pieces, including the multifaceted energy director, is also provided.