Ultrasonic welding apparatus

摘要: An ultrasonic welding apparatus for providing a closure on plastic film bags wherein the end of is gathered, twisted or not twisted, and then welded to provide hermetic seal, includes an anvil having recess into which gathered material placed welding. The side lined with low friction material, such as nylon Teflon, accomodate sliding fit between resonator recess. Absent close surface surface, bag will escape space, thereby preventing seal. prevents destruction opposing surfaces subjected high intensity vibrational forces.