High Contrast and intact Surface - a Challenge in Laser Marking of Plastics

M. Hofmann; F. Breitenfellner; N. Buhler; R. C. Sykes; H. Gugger

doi:10.1117/12.966970

1 January 1987 High Contrast and intact Surface - a Challenge in Laser Marking of Plastics

M. Hofmann, F. Breitenfellner, N. Buhler, R. C. Sykes, H. Gugger

Proceedings Volume 0744, Lasers in Motion for Industrial Applications; (1987) https://doi.org/10.1117/12.966970
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

Abstract

Laser Marking has become a widely accepted technique to label a large variety of materials from hard carbide ceramics over packaged microelectronic devices and a variety of metals to coated cardboard boxes, traditionally using lasers with high power and good overall efficiency, such as CO₂ and Nd:YAG lasers. Most of the materials being marked, in particular organic substances like plastics and varnishes undergo a more or less pronounced burning or ablation of the surface which leads to a relief structure. We have developed a method to mark plastic materials which contain some particulate filler (pigment, dye or additive) using laser pulses of shorter wavelength than most of the known processes, which therefore are not absorbed by the matrix material.

Citation Download Citation

M. Hofmann, F. Breitenfellner, N. Buhler, R. C. Sykes, and H. Gugger "High Contrast and intact Surface - a Challenge in Laser Marking of Plastics", Proc. SPIE 0744, Lasers in Motion for Industrial Applications, (1 January 1987); https://doi.org/10.1117/12.966970

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