Translator Disclaimer
14 October 2011 Laser welding of nylon thin films using a pulsed CO2 waveguide laser
Author Affiliations +
Proceedings Volume 8287, Eighth Symposium Optics in Industry; 828704 (2011)
Event: Eighth Symposium Optics in Industry, 2011, Toluca de Lerdo, Mexico
In this work, we present an experimental investigation for welding Nylon: Bi-Oriented Polyamide (BOPA) thin films using a CO2 waveguide laser in a pulsed configuration. The material used in this study is Nylon 6, all set in square sheet thin films samples of 100 cm2 with 15 μm thickness. Our optical setup is based on deliver the laser beam all the way through the work piece using X-Y scanning mirrors mounted on galvo-like motors and an f-theta lens with 15 cm focal length and 50 μm focal spot sizes. The fluence (laser energy) is controlled by a pulse signal generator having the possibility to change the pulse repetition rate (PRR) and the pulse width (PW) of the laser beam. Our results show the best weld seam for scanning speeds of 20mm/s and the pulsed laser beam with 2 KHz PRR and 80 μs for the PW time. The scanning speed and trajectory for the welding process are all controlled by a computer in which one can modify the weld parameters. The irradiance at the focal point is set to 1.146 MW/cm2 while the average optical power was set to 22.5W. Our experimental parameters are previously modeled by using COMSOL Multiphysics software were the laser heat source is modeled on the selected material. This model is based on the heat transfer partial differential equation and solved by finite elements procedure. Model results show a perfect agreement with the experiments. Finally, the quality of the welded seam is studied by means of sealed tight and share force critical mechanical test.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Villagomez, Rogelio Valenzuela, and Roxana B. Camacho-Mesa "Laser welding of nylon thin films using a pulsed CO2 waveguide laser", Proc. SPIE 8287, Eighth Symposium Optics in Industry, 828704 (14 October 2011);


GW-high pressure CO2-N2O laser with optical pumping
Proceedings of SPIE (June 16 2004)
The Fir Waveguide Laser - A Practical Source
Proceedings of SPIE (November 10 1975)
Special mirrors for cw CO2 high-power lasers
Proceedings of SPIE (July 02 1998)
Wavelength dependency in high power laser cutting and welding
Proceedings of SPIE (February 06 2012)
Glass Working With CO2 And HF Lasers
Proceedings of SPIE (September 22 1987)
Radio-Frequency Excited Waveguide CO2 Lasers
Proceedings of SPIE (March 27 1985)

Back to Top