Improve thermal efficiency and reduce exhaust emissions At present, the energy consumption of some domestic gravure drying systems accounts for more than 60% of the total energy consumption of the whole machine (not including the energy consumption of VOC treatment system). The main reason is that the efficiency of these gravure drying systems is low and the hot air is not fully utilized, which leads to the increase of total exhaust gas emission, excessive motor power consumption and VOC processing capacity. In fact, our main goal of improving the drying system of gravure press is to achieve the balance of solvent residue, LEL (minimum explosive concentration) and VOC emission, that is to use the maximum circulating hot air (controlled within the safe value of the solvent explosion concentration, for example, below 40%, but close to 40%) on the premise of reducing the residual solvent amount of printing materials and ensuring that this index does not exceed the standard To achieve minimum VOC emissions. Improve the printing process in gravure production process, upgrading the ink supply system is one aspect we can work hard on. (1) The ink tracing system and ink distributor are used to reduce the production of residual ink. Together with ink suppliers, develop an automatic ink dispensing system suitable for the needs of flexible packaging enterprises, which can not only ensure the consistency of spot color ink hue (especially the consistency of continuous order spot color ink hue), but also quantitatively allocate the spot color ink to be used without waste. Moreover, it can also give priority to the use of surplus ink to match ink, which not only reduces the production cost, but also reduces the production of printing waste, which is really an environmental protection measure. (2) Improve the ink supply system of gravure printing machine and use closed ink tank to avoid excessive volatilization of solvent. Because the excessive volatilization of solvent not only causes the waste of solvent, but also causes air pollution, endangers the health of workers, and affects the stability of ink viscosity and color phase. Moreover, once the substrate falls into the open ink tank due to the tension problem, it is easy to cause the solvent concentration in the oven to exceed the standard instantaneously, which is harmful to the safety production.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.
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