UV light curing machine is used for paper, PVC, and plastic products that use UV spraying and curing of the ink layer after printing. It is currently the most environmentally friendly ink drying method. Next, I will introduce to you the scope of application and advantages of UV dryers.
Scope of application of uv dryer
Offset printing: Offset printing has become the mainstream printing process for high-end prints due to its fine craftsmanship and rich colors. Offset printing can adapt to the expansion and contraction of printed matter. High-efficiency and high-speed printing has strict requirements. The UV dryer must be matched with offset printing so that the drying temperature of the printed matter cannot exceed 50°C, so as not to cause the printed matter to stretch and deform. The drying speed must reach 8,000 sheets/hour, and the supporting smart automatic collection Only paper machines can adapt to the automatic and high-speed printing requirements of offset printing. The UV lamps used in conventional UV dryers are high-temperature and low-intensity UV lamps. The drying temperature of printed matter reaches 70°C to 90°C, and the UV drying speed is 4000-5000 sheets/hour. .
If the UV lamp power is increased to achieve the drying speed, the UV drying temperature will increase exponentially, making it impossible to meet the strict process requirements of offset printing. A dedicated low-temperature and high-speed UV dryer for offset printing uses imported low-temperature and high-speed UV dryers. Intensity UV lamp, low-temperature high-intensity UV lamp is a high-pressure mercury lamp that uses high-purity luminescent electrodes, is filled with high-purity luminescent gas in an accurate proportion, and is produced through high-end technology. It has small operating current, low temperature, and high intensity, which is higher than the same specifications. The luminous temperature of conventional UV lamps is more than 40% lower, and the luminous intensity is more than 100% higher.
Special printing: widely used in screen printing, offset printing, letterpress printing, self-adhesive trademarks, metal nameplates, KT boards, glass, ceramics, electronic parts, single-sided circuits Special effects such as crystal ice flowers, frosting, crystal gems, colorful embossed oil, etc. are printed on substrates such as boards.
Coating: bright wood surface coating, paper polishing, plastic flooring, fiber optic cable surface coating. Instant drying, time saving and high production efficiency. It can make the printed surface achieve high gloss, friction resistance and solvent resistance. The conveyor belt has stepless speed regulation and is equipped with an anti-offset device to ensure smooth transportation. Imported Teflon mesh belt, the conveying speed is stable and adjustable, and can be easily connected to the production line and other equipment. Each UV system is independently controlled and the number of lamps is turned on according to production. It adopts special aluminum-magnesium alloy lampshade, focusing design and high production efficiency.
The working UV current of the UV lamp can be controlled by the external indicator needle, effectively grasping the working status of the UV system. Equipped with a reasonable heat dissipation system to prevent paper deformation caused by excessive temperature in the working chamber. The heat can be discharged to the outside through the heat exhaust system, while effectively protecting the performance characteristics of the production and working environment.
Advantages of uv dryer
1. Instant drying: eliminating the waiting time for drying and greatly shortening the painting process time.
2. Directly matched with the coating machine: it can be connected to the roller type or curtain type coating machine, and the finished product will be dried directly after painting, eliminating the trouble of transportation.
3. The surface hardness of the painted object is improved and the color is bright.
4. Extensive drying function: drying wood boards, plywood, furniture, steel plates, building materials, lenses, leather, etc. after coating with UV paint.
Notes
1. When turning on the lights of the UV dryer, the lights should be turned on in sequence, with an interval of about 1 minute between each light. Do not turn them on at the same time.
2. After the UV dryer turns off the lamp, the fan should continue to run for a period of time until the lamp cools down.
3. If you want to start the UV dryer a second time after turning off the lamp, you must wait until the lamp is completely cooled before starting, otherwise it will not start when the surface temperature of the lamp is very high.
4. The UV dryer cannot be put into production immediately after turning on the light. There must be a period of lamp preheating time. When the temperature is high in summer, the preheating time is short; when the temperature is low in winter, the preheating time is longer and the preheating time is longer. The heating time takes about 2-3 minutes.
Offset UV printing is a new offset printing process, which requires the offset printing press to have a UV drying system. Offset printing presses with UV drying systems are mainly imported and very expensive. Generally, the original offset printing of printing companies The machine does not have a UV drying device, so it can only rely on connecting a UV dryer for UV printing. The UV dryer has flexible application advantages.
The above is the introduction I have brought to you. If you want to know more relevant knowledge, please continue to pay attention to Qijia Consulting. Stay tuned for more exciting consultations.