Application of glazing technology in carton packaging printing

The laminating process is simple and cheap, but because the paper after lamination is difficult to recycle and regenerate, it is non-degradable and easy to cause white pollution. Long-term use will also endanger the health of workers. Therefore, the traditional ready-to-coat laminating adhesive materials will be replaced by high-quality, environmentally friendly new adhesives. Glazing can not only enhance the surface brightness, protect printed graphics, but also does not affect the recycling of paper, which can save resources and protect the environment. Therefore, it is widely used in the surface processing of paper packaging printed products. Glazing coating mainly includes solvent glazing oil, water-based glazing oil, UV glazing oil, etc. Due to the poor efficacy of the solvent varnish, and not conducive to environmental protection, the scope of application is greatly limited.

The water-based glazing oil uses water as a solvent, non-toxic and odorless, eliminating the harm to the human body and the pollution to the environment. It has fast dry bath speed, stable performance, good wear resistance of the glazed surface, wide post-print processing adaptability and heat The characteristics of good sealing performance and safe and reliable use have attracted more and more attention from food, medicine and tobacco carton packaging and printing enterprises.

UV coating depends on the irradiation of ultraviolet light to cause a chemical reaction inside the UV coating to complete the curing process. Due to the role of ultraviolet rays, UV drying occurs instantly when glazing, and there is no volatilization of solvent during curing, which will not cause pollution to the environment. Prints using UV varnish have high surface gloss, heat resistance, abrasion resistance, water resistance, and light resistance. However, due to the high price of UV varnish and the high performance requirements of the machine, they are currently only used on high-end paper boxes. Light.

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