1. Viscosity value ????????????????????????. We are now using a high-speed printing press, in the process of high-speed operation, solvent evaporation speed is relatively fast, and the ink viscosity is relatively low. 2. It is very important to choose the suitable press roller. Spot color layout is a large area, and the transfer rate of ink on the plate roller is relatively high. If we choose the imprint roller with high hardness for production, the ink can not be well leveled and wetted on the whole page when transferring, which will reduce the transfer rate of ink to the printing substrate. 3. When all the inks are produced with old inks, similar problems may occur. Old ink is mainly stored for a long time, if you do not pay attention to sealing, there may be ink oxidation, the solvent in the ink volatilizes, absorbs the moisture in the air, the resin and pigment in the ink are relatively reduced, and the glossiness of the ink decreases. 4. The ratio of solvent to solvent is the key. In high-speed printing, solvent drying speed can not be too fast, to slow dry solvent production! Add solvent into the use of the principle of frequent and less, add from the ink filter socks and stir, do not add from the ink basin, and the strength can not be too large, otherwise it will affect the color of the ink. Blade angle ?????????????????????????????????????! This can take into account ink flowers and dry version. 6. Production environment ?????????????????? 6. At present, the relative humidity of our workshop is 80% and that of normal printing workshop is 50%. ?????????????????????????????????. 8. Raw materials ?? the corona strength value of raw materials must be tested before film printing. If the value is too low, the ink can not be fully transferred, especially in the shallow screen printing, there will be poor transfer, similar to blocking quality problems. This problem is mainly due to the poor corona impact strength of the film surface, the film surface does not form a rough surface, and the surface tension of the material can be greater than the surface tension energy of the ink The ink can not form effective adhesion on the film, the ink can not be fully transferred, so that the ink can not show the effect.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.