Laser marking on plastic surfaces with minimal changes in material structure and maximum contrast

  • 1 Rezekne Academy of Technologies, Rezekne, Latvia


It is possible to do laser marking on plastic surfaces by using lasers. Coding of information is very popular in last years because of its ability to convert information in one symbol. But there are lot of small sized parts where it is hard to do laser marking or physical impact on material is so big, that this code would be readable. On the other side contrast of marked area must be good enough so camera used in experiment would be capable read it. Goal of research is to find laser parameters that would be good enough to do laser marking on plastic surfaces so that physical impact would be made on that surface. There is used two-dimensional code- QR code. Target is to find parameters which would allow to do 3.5mm big square.



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