In recent years, countries in Europe, America, and Japan have been actively developing energy-efficient UV systems. The research approaches can be broadly categorized into two directions. One involves improving traditional mercury lamps, which, despite some progress, still suffer from inefficiency, ozone production, and excessive infrared radiation. The far-infrared heat is often isolated to reduce damage. The other approach focuses on creating new light sources, such as single-band UV emitters, to achieve a more environmentally friendly and sustainable solution. Today, the market offers several types of energy-saving UV systems, including H-UV, ECO-UV, LE-UV, and LED-UV systems.
The Development of Energy-Saving UV Technology
Some energy-saving UV systems still rely on mercury lamps, which have limited lifespans and pose environmental risks due to heavy metal contamination. These systems require continuous improvement. According to reports, Japan plans to phase out mercury usage by 2025. As a result, LED-UV systems have gained significant attention in recent years. LED technology is already widely used in lighting and projectors, and it's now being explored for UV curing applications. The core of this technology lies in LED chips. Countries like the U.S., Taiwan, Japan, and South Korea are making rapid advancements in LED chip development, which has helped reduce costs significantly.
Performance Characteristics of LED-UV
Energy Efficiency
The key difference between LED-UV and traditional UV systems lies in the use of a single-band light source. As shown in the figure below, the LED-UV emits light primarily in the narrow blue range between 360 and 370 nm. This narrow band results in significantly lower energy consumption. According to the data in the table, an LED-UV lamp can save up to 8 kWh per hour. If we calculate based on a single shift, over a year (assuming 200 working days), it could save approximately 20,000 kWh. Moreover, since each LED chip operates independently, the system can selectively activate only the necessary chips depending on the pattern being cured, leading to maximum energy efficiency.
UV, H-UV, LED-UV Band
LED-UV Lamp Compared with Ordinary UV Lamp (800mm, 1 Set)
As the demand for eco-friendly and efficient technologies continues to grow, LED-UV systems are becoming a preferred choice across various industries. Their ability to reduce energy consumption, minimize environmental impact, and deliver precise curing makes them ideal for modern printing and manufacturing processes. With ongoing innovations in LED chip technology, the future of UV curing looks brighter and more sustainable than ever before.
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