Development carton printing plate for improved quality of life as people and printing and packaging to improve the environmental protection requirements, flexographic printing these years has been rapid development in the world. In the category of flexographic printing was divided in different types, such as: carton direct multicolor printing, pre-printed cartons, flexible packaging printing, film printing (plastic bags, tablecloths, etc.), label printing, coating electronics industry LCD conductive liquid cloth. Above flexo, different printing devices are used, with different thickness, hardness of the plate to print different substrates. So far, flexographic printing product areas mainly in cartons, flexible packaging and label three aspects. Three different consumer goods. Corrugated box printing gradually develop to a higher level of multicolor and dot direction. From the amount of use in terms of flexographic plates, cardboard version accounted for 80%, flexible packaging, labels and other accounted for only 20%. Based on the past 10 years, Shanghai carton industry incomplete statistics, the annual growth rate of 20%. The reason being carton flexo printing choice, because the rough surface of the carton, and general metal plate such as an aluminum plate or gravure offset printing are difficult copperplate printing such substrates. Flexographic printing originated in simple text logo, but also the best choice for carton printing, and later gradually will evolve this way for environmentally friendly printing wide format printing and narrow face, mainly used to print flexible packaging and trademarks. We see, flexo plates is evolving day by day, but also make the product more attractive flexo plate making more simple and convenient, more environmentally friendly. ■ PH value PH value PH value ink ink ink viscosity affect other applications need to control indicators, the normal range is 8.5 to 9.5 plate, then the best printing performance water-based ink, the printing quality of the most stable. Due to volatilization of ammonia continuously during the printing process, the operator also from time to time add new ink to the ink, and various additives, so PH value of the ink may change at any time. PH value using a standard meter carton printing plate, you can easily measure the PH value of the ink. When the PH value is higher than 9.5, too alkaline, water-based inks to reduce the viscosity of the plate manufacturer, the drying rate becomes slow, water resistance is deteriorated, prone to scumming; and when the PH value of less than 8.5 that is too weak alkaline the viscosity of water-based inks will rise, ink easy to dry, locked onto plates and anilox roll, causing the layout dirty, and create a bubble. PH value of the impact on water-based ink printability mainly in the dry ink viscosity stability and clarity of terms and outlets. With the increasing value of PH, the ink viscosity decreases, the drying speed is slow. Experience in application of water-based ink cardboard printing process often encounter some problems, cause analysis and solutions may refer to the following: ◆ printing pressure adjustment is critical, which includes intermediate pressure between the plate and the substrate and anilox and plate pressure. If the ink viscosity is too high, the problem of excessive ink drying flexo platemaking solution is to adjust the pressure, diluted ink, add slow drying agent. ◆ ink is dry on the printing plate, printing edge blur, it may be on the hot air blown plates, paper fibers mixed with ink cause static reaction, the elimination approach is diluted ink and gradually speed up, will cover the ink system, or replacement inks, Installation went static devices. Resin plate making, Yangzhou plate, Zhengzhou Dunlop Ads by Dunlop Advertising Co., Ltd., Zhengzhou. "Flexographic, resin version, print, packaging design" Preferred Advertising Co., Ltd., Zhengzhou Dunlop (2), the company is located: Chemical Road, Zhengzhou City, the northwest corner of Narcissus Road, over the years, Zhengzhou Dunlop advertiser to provide customers with the best quality Services, Contact: Manager Zhao. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Zhengzhou Dunlop ads look forward to be your long-term partner!