Laser marking technology to lead the domestic enterprises to enter the laser processing industry, especially fiber laser widely used in laser equipment, the laser marking industry has reached the market "peak", but the laser marking applications over the years, we see the common laser Marking patterns are black and white ash.
To visualize such visual effects, in addition to inkjet and lacquer, the technology of a MOPA pulsed fiber laser can be used with independently adjustable pulse width and frequency.
When marking the stainless steel, the laser can change the color of the surface layer of the material by adjusting the laser beam to obtain different decorative effects.
Its advantage lies in its pulse width and frequency is independently adjustable, adjusting one of the other parameters will not affect the laser, which is Q-switched laser does not have. And this feature gives stainless steel color marking with unlimited possibilities. In the actual marking operation, the pulse width, frequency, power, speed, fill mode, fill spacing, delay parameters and other factors will affect the color effect.
However, due to the technology is not very mature or subject to a lot of limitations, the price is also most manufacturers can not accept. Because a color laser marking machine can buy several laser marking machine.
Laser color marking new technology.
Recently a group of laminated materials has been developed in Germany that includes an outer laminate and an inner laminate, wherein the outer laminate comprises a transparent polymer support on one side of the support that contains at least one of infrared The area absorbs the maximum value of the infrared dye color laser markable layer, this laminate can be used for almost all common marking materials, this technical advantage to be different from the ordinary laser paper on the market.
In Japan, a composition that can be used for laser color marking and a method of producing the same are also available. The composition of the composition includes: 100 parts by weight of the polymer; the content of the laser marking powder is 0.05622 parts by weight; and the content of the temperature-sensitive substance is 0.16210 parts by weight. The preparation method comprises the following steps: melt-blending the components including the polymer, the laser marking powder and the temperature-sensitive substance according to the component ratio. By adding temperature-sensitive substances and utilizing the heat generated in the laser marking process, the temperature-sensitive substances are thermally decomposed, oxidized and the like at a certain temperature, and the reactions destroy the original substance structure or generate a new substance, At the same time, a new color is produced. The color change is unidirectional, irreversible. After cooling, the original color can not be restored, so that a stable permanent mark can be formed on the product.
Chengdu MRJ-Laser Technology CO., LTD is working on the laser color marking process. I believe the future laser color marking pattern will be more complex and diverse. The beautiful decoration effect will give a wider application space for laser marking and become a laser processing application. Trend of the trend.