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Most high-speed production line printing operations require that the inks, adhesives, and coatings be dried in the unit. The use of electron beam (EB) alone as a dry treatment method is not economical in terms of price and space utilization.
Third, the trend of the United States and Europe as the carrier of printing, packaging materials, so far in the world market still dominate the dominant position of the original material. But beautiful, durable, lightweight, and highly processable plastics have rapidly increased in the United States and Europe in the markets for food, daily necessities, makeup and hygiene products and other product packaging. At the end of 1995, sales of soft and semi-rigid paper and soft plastics in Europe and the United States reached 66.4 billion U.S. dollars, an increase of 31% over 1990. Since then, paper packaging has grown at an average annual rate of 3.9%. It will increase to 36.4 billion U.S. dollars by the year 2000. The development of soft plastic packaging is faster than paper packaging, with an average annual growth rate of 7.2%. By the year 2000, it will reach US$512. Manufacturers are actively adopting new heat-sensitive plastic materials and their corresponding innovative processing methods that do not cause shrinkage of carrier substrates, replacing traditional processing methods of existing paper products after finishing.
In the past, most printing and finishing machinery (lines) were designed to handle solvent-based inks and coatings. Because the volatilization of the solvent causes environmental pollution and the residue and transfer of chemical substances on the carrier, its use is strictly limited by the environmental protection regulations and is limited to a period of modification. External requirements led to the development of UV curing and heat drying processes. Ultraviolet drying treatment has good effect on surface curing, but it cannot penetrate or completely cure thicker coating. At the same time, only 20% of the electric energy actually consumed is converted into ultraviolet light to generate a curing effect. The other 60% of the electric energy is released as heat, and the remaining 20% ​​is converted into visible light, and the energy utilization is particularly low.
The thermal dryer covers 4 times more space than UV curing equipment and 3 times more than electron beam curing equipment. The heat generated by the thermal drying system can easily cause many plastic packaging materials to overheat and cause the substrate to sag and shrink. After this drying process, the shrinkage of the paper is 1.25%, and the PE and BOPP films will shrink by 2% or more. This is incompatible with the use of new heat-sensitive plastic materials.
Scientific and technical personnel in the United States and Europe have introduced electron beams into existing UV or thermal drying processing lines. And with electron beam and any one of the drying methods mixed treatment, advantages can be complementary, defects as weak as possible. It can create new products, increase production efficiency and profits, and enhance market competitiveness.
IV. Electron Beam Hybrid Drying Treatment Any combination of UV curing or heat drying treatment and electron beam treatment can be fully cured regardless of the thickness of the coating. Increased production speed, no thermal damage to the carrier substrate, can improve the application performance of glazing coatings, enhance adhesion, and improve the finishing effect after finishing.
In the UV/electron beam mixing process, low energy, low heat UV light can cure the surface of the coating. The depth of the coating is simultaneously dried by the electron beam. The power of the light source is only 2-40W/cm, which is 60% energy saving than the ordinary UV light system. The low heat generation avoids the shrinkage deformation of the substrate.
During heat drying/electron beam mixing, energy consumption and heat generation are reduced by approximately 40%, allowing waterborne gloss coatings to be fully cured, with good scratch resistance, and minimal or no chemical transfer Soft packaging materials, semi-rigid packaging materials, and rapid curing lamination without post-curing.
In order to ensure sufficient curing, it is usually necessary to remove oxygen from the treated material by nitrogen during electron beam treatment.
The hybrid process is used in printing and post-finishing finishing and can be applied in multiple passes in a single pass to achieve optimal multi-color printing and curing of glazing on one machine to produce high-gloss, scratch-resistant The best processed product. Safe operation is similar to microwave. Can improve product quality, save resources, have many value-added advantages. It is the finishing process for the post-press finishing of the 21st century – the direction of improvement of SHIFT will create a new development opportunity for the industry. 
The driest drying technology (below)
Electron beam (EB) heating and drying method Electron beam drying method is a kind of electron beam processing technology used in perforation, groove cutting, cutting, etc. in foreign developed countries in recent years. It is applied to the production of multi-color high-efficiency printing technology. New energy conversion processing methods. Electron beam (EB) is a polymerized, dense, directional electron flow generated by an electrical vacuum device. Using the high power density electron beam processing method, the electrons emitted from the hot cathode are controlled by the electrostatic field of the control electrode and the accelerating anode to be condensed into a dense, small-surface-mounted electron beam that moves in the same direction. When the electron beam hits the workpiece, the kinetic energy becomes thermal energy, producing an extremely high temperature that can instantaneously melt or vaporize any material. It is considered by the scientific community as a drying technology with the best processing consistency in the near future. Allows inks and coatings to be maximally crosslinked and polymerized without post cure and solvent residue. At the same time, the use of heat energy is highest.