BSBY_f001 UV green ink Dior brand [cis, Zhang, 13823696851] philosophy: operating on the promotion of "integrity, progressive and efficient" spirit, sincere customer service "Your satisfaction is our eternal pursuit of" the spirit of consistently uphold the " honest and trustworthy, pioneering and innovative "the essence and dedication to provide customers with first-class service and sincerely with domestic and foreign merchants pair Huang cooperation and common development. create brilliant! UV inks in the printing process prone to problems and solutions are as follows: One problem: good gloss, brightness is not enough. Main reasons: UV Varnish viscosity itself is too small print coating is too thin; ethanol, toluene and other non-reactive solvents excessive dilution; light curing resin itself is not enough gloss; paper too absorbent; anilox too thin cause transmission too light oil; Solution: the glazing to be printed to take the necessary measures for cleaning; properly adjusting the viscosity of varnish; deployment varnished type and amount of additives, a small amount of wetting agent may be added; can be 2% of the alkaline solution to clean the surface of the printed matter. Second problem: the printed surface can not be printed. Main reasons: UV Varnish viscosity, coating is too thin; printed surface with oil; ink surface "vitrification" affinity with Varnish improper; ink surface with anti-sticking material (such as silicone oil, powder) too; anilox coating is too thin; Workaround: To be glazed to take the necessary measures for cleaning printed; suitably adjusted Varnish viscosity; deploy Varnish type and amount of additives can be added to a small amount of wetting agent; Available 2 % of the alkali solution to wipe the surface of the printed matter. Question three: printed sticky surface after polishing, drying bad main reasons: UV power is not enough; UV lamp aging, weakening; UV Varnish initiator improper selection; ethanol, toluene and other solvents added excessive; machines go Paper too fast; UV light curing varnish own poor performance. Workaround: timely maintenance equipment and replacement lamps; adding a certain amount of photoinitiators and photosensitizers, such as three yuan amine to accelerate the speed of light curing skin degrees; adjust printing process. Question 4: Surface coating uneven striped and orange peel main reasons: UV Varnish viscosity is too high; pressure uneven size; coating excessive; UV Varnish poor leveling; paper is not flat, absorbent too; UV Varnish Surface peace is poor. Workaround: Reduce UV Varnish viscosity; reduced amount of coating, it secretly to revamp uniform; may be added to a small amount of leveling agent; corona treatment on the printed surface to increase the UV varnish on the surface affinity. Five questions: UV coating pinhole phenomenon main reasons: too thin; anilox too thin; ethanol, toluene non-reactive diluent adding excessive; printed surface with dust Workaround: To strengthen the operating environment clean; adding a small amount of leveling host auxiliaries, wetting agent; choose a dedicated UV diluent system components to prevent incompatible; printing, try to increase the coating thickness. Question 6: printed surface with craters, fish-eye phenomenon is mainly due to: the printed surface is not clean, there may be oil; UV Varnish poor leveling; varnished defoamers improper selection too strong defoaming properties. Solution: Clean the print surface; rational use of anti-foaming, leveling aids. Question seven: UV Varnish poor adhesion main reasons: printed ink surface "crystallization" unable affinity with varnish, wetting; printing inks accessories inappropriate choice; UV Varnish itself insufficient adhesion; curing control condition is not reasonable, the curing time is too short or too long; for non-polar or low-polar substrates (such as PE, PP, PET, OPP, BOPP, etc.) Untreated direct printing UV varnish solution: printing ink should be selected waxy lower models; choose good flexibility, good adhesion of the light curing resin and a reactive monomer; grasp reasonable curing time, curing time is too short, UV curing varnish surface is not completely cure the underlying cause reduced adhesion; Curing time is too long, UV Varnish receiving excessive ultraviolet radiation can cause poly-and post-curing, the coating film brittle, leading to poor adhesion. Question 8: glazing film toughness is poor mainly due to: UV varnish itself resin, reactive monomer improper selection; glazing thick coating; curing process to grasp properly. Workaround: Select the toughness of the light curing resin and reactive monomers, controlling the amount of monomer, crosslinking and lower density; during printing, the choice of the number of larger mesh screen printing, to reduce the coating thickness; grasp reasonable curing time. Company Name: Dongguan Dior-smooth coating Ltd. UV inks: http://www.shuixingyoumotuliao.com http://www.tezhongfangweiyoumo.com http://www.uvyoumo.net charge: Mr. Zhang TEL: 0769 - 82026758 Mobile: 13823696851 13926563785 Fax :0769 -82026948 E-mail: diaoshun58@163.com QQ: 1906452207 Address: Dongguan City, Huang Starlite Village Industrial Zone Dior new exhibition shun people full of spirit, and strive to develop, update products, and constantly improve the quality requirements, and encourage competition in the market to grow at home and abroad, and sincerely look forward to the rapid development of globalization to create a better future for the ink coating industry and make its due contribution to the promotion of BSBY Network Alliance Hui ..... This article Source: http://www.uvyoumo.net/show-100-66.html