Near-infrared absorption anti-counterfeiting ink is made of one or several near-infrared absorption materials added to ink. Near-infrared absorption material is an organic functional dye.
It has absorption in the near infrared region, the maximum absorption wavelength 700nm ~ 1100nm, and the oscillation wavelength falls in the near infrared region, due to the near infrared absorption ink absorption, such as in a part of the printing ink, without any trace in the sun, but under the detection instrument, can observe the corresponding signal or dark text.
Near-infrared absorption material is an organic polymer material, the material is synthesized at high temperature, the production and processing process is complex, the technical difficulty is high, the production cost is high, so the near-infrared absorption anti-counterfeiting ink has high temperature resistance, light resistance stability and good anti-counterfeiting effect, and the difficulty of imitation is high.
Post time: Jun-03-2021