Environmental protection is no longer just an economic problem, but of the entire human existence a big problem. Printed products are the most extensive infiltration of human life, one of the products, of course, for the society and people's concerns, in the packaging printing and commercial printing, etc., in recent years has gradually increased the number of health, environmental protection, labor protection requirements and constraints conditions, especially for food packaging and printing requirements more stringent, the only way to meet international health standards. Under this trend, efforts to develop and apply pollution-free, pollution-free "green" materials has become an imperative, water-soluble Varnish is competing in developed countries in recent years, research and development of new coating materials, printing has become increasingly by the printing industry attention. It is the graphic printing process has been completed replica of the surface, with the field plate or a graphic printing plates then printed once or twice on the varnish, so that the printing surface was bright film layer method.

Varnish is a water-based printing synthetic resins, additives and water-related processed by the National Science and Technology made. Has a non-toxic, non-stimulating, non-volatile organic compounds, low cost and wide sources of material characteristics, other solvent-based Varnish unmatched. Water-based Varnish in operation on the human body to eliminate hazards and pollution to the environment has increasingly been the food, pharmaceutical, tobacco, printing enterprises of the pie. Water-based Varnish Varnish, compared with solvent-based addition to environmental benefits, what advantages do? According to our experience gained in practical applications, can be summarized as the following:

① high transparency, good gloss, color had no effect on the print has been printed materials bright, intense sun exposure in the long run, the water-borne Varnish yellowing is not easy.

② wear strong, anti-scratch, was printed surface wear, no fade, exclusion of water, exclusion of oil, deeply welcomed by customers and trust, in particular cigarette, at speeds up to 300-500 bags / minute high-speed in operation, enlarging its to be exposed to high mechanical loads, for printing not only polishing, but also have a strong resistance to abrasion, water-based glazing not only able to fully meet this requirement, but also whether offset or gravure There was no discovery packets fade phenomenon.

③ conjunctiva fast, quick drying, water-based glazing CD in Heidelberg five-color offset press with coating is applied on the printing speed of 13000 / h, infrared drying power 5.4KW × 5 Zhi × 2 group, the temperature under the condition of 65 ℃ completely dry, to achieve a satisfactory application effects.

④ use, transportation, storage convenient, safe, water-based glazing is conducive to safe production and to improve employee working conditions. As the solvent-based Varnish is a category of dangerous goods, transportation, storage, use very inconvenient, but water-borne Varnish with water as solvent, without any danger, the use of safe and reliable. After the finished light can be directly printed roller washing with water, machinery and liquid pool, keep the machine, workshop space clean, clean, without polluting the environment.

⑤ non-toxic, tasteless, water-based Varnish with water as solvent, only a small amount of volatile food ethanol as auxiliary solvent, therefore particularly suitable for food, drugs, tobacco use on the packaging. Smoking tobacco is a highly flavored plant, application of water-borne Varnish can not eliminate the possibility of Taint of Odor.

⑥ high temperature, heat sealing performance is good, now widely used cigarette packets PP film as packaging. Water-based Varnish has good sealing performance, even if the use of cellophane can also get a good sealing effect.

⑦ flatness is good, strong anti-roll, gravure printing, a most difficult problem is printed material through several color groups of continuous drying, the paper moisture content is very low, are particularly vulnerable to curl, making it impossible to use. The use of water-based coating on the glazing to the flexible packaging products by cutting large sheet, and then tipping points cut, still maintain good flatness and anti-roll nature of this change for the gravure offset printing, in particular, the need for enlarging its gilt change gravure provides a new way.

⑧ reasonable prices.

In addition to these advantages, the water-borne Varnish also very convenient in use, especially in the conjunctiva than the solvent-drying process or oily Varnish advantages. Generally speaking, at room temperature +5 ℃ to +10 ℃ range starting above resin polymerization, when the polish also contains 20 ~ 30% water, the polishing process has been basically completed the conjunctiva. Varnish the conjunctiva from the water course is not difficult to see, water-based coating is not excessive demands on temperature, water-based glazing in Gravure Printing Machine to use with the general solvent-based Varnish than easier. Varnish is mainly for controlling the viscosity of a good, anilox depth and oven temperature can be, Varnish instant dry, can be directly bronzing, die-cutting