Clearweld is a unique through transmission laser welding technique that allows for welding of two clear or two near-infrared transparent substrates. The process yields a nearly colorless weld when joining clear substrates. The resulting welds are also free from flash with minimal residual stresses. Applications of the Clearweld process can be found throughout the plastics welding industry including medical, automotive and electronics.
An investigation was performed on the effect of welding parameters on joint strengths. The Clearweld process was utilized to weld thermoplastics in a butt joint configuration. Welds were produced at various laser powers, weld speeds, and clamp pressures. In addition, welds strengths were compared for samples generated by simple contour welding and quasi-simultaneous welding. Acrylic and polypropylene Clearwelded samples were examined.