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UV ink on the impact of UV screen printing

UV screen printing UV ink solid content of 100%, there is no component volatilization, curing ink film thickness is basically unchanged, is conducive to obtain a higher film thickness, and the printing and curing process is easy to control, can avoid blocking, spots and other faults, reduce downtime.

Although the UV screen is printed with many advantages, but the determination of photoinitiation conditions, affect the curing quality of the ink layer, improper selection, but also on the surface of the ink film curing faster. On the other hand, UV screen printing its advantages, although the ink film is thick, but the lower pigment content can achieve high covering power, which is a favorable condition for the underlying curing. On the premise of not interfering with pigment saturation and hiding power, appropriate addition of light transmittance fillers with better refraction can increase the concentration of light transmittance medium in the ink layer, and also help to improve the light absorption of the underlying initiator. Because the screen printing ink film is thick, the printing accuracy is not very high, and the pigment particle size can be larger, so without sacrificing the pigment dispersion, the pigment particle size can be appropriately increased, so that the actual light transmittance of UV ink is increased, so as to facilitate the underlying curing.

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