Ultrasonic Welding.

Abstract

Ultrasonic weldability depends on the rigidity of the material as a function of temperature (shear modulus G', mechanical loss factor tan delta ), melt viscosity, additives such as reinforcing or filling materials, colorants, etc. Process-related factors such as internal stresses, tolerances and mould release agents must be allowed for. The design of the actual joint must take account of the plastics material to be used, the design of the parts and the loads occurring under service conditions. Equipment is on the market which monitors and, where necessary, readjusts the output of the welding unit.