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Tailored to the core requirements of flexible packaging printing, the LEDUV curing equipment dedicated to flexible packaging achieves three breakthroughs—zero environmental emission, low-temperature film protection and high-efficiency mass production—by virtue of dual-wavelength light sources (365nm/395nm, with irradiance ranging from 800 to 2000 mW/cm²) and film-adaptive optical design:

Solvent-free & Eco-friendly: Meeting Strict Environmental Standards
When combined with UV inks, LEDUV curing eliminates the need for volatile solvents, resulting in nearly zero VOC emissions. It fully complies with the requirements of GB 38507-2020 and EU CE certification, enabling enterprises to save the investment and operation & maintenance costs of waste gas treatment equipment. There is no solvent residue left after the UV ink is cured. Third-party testing shows that the content of migratory substances in food-contact packaging is ≤ 0.5 mg/dm², far below the limit specified in GB 4806.8-2016, making it suitable for packaging in direct contact with food such as milk powder and snacks. After adopting this technology, a food packaging enterprise reduced the complaint rate of solvent residue from 12% to 0 and successfully entered the high-end EU market.

Low-temperature Curing: Protecting the Performance of Film Substrates
LEDUV light sources are cold light sources without infrared radiation. During the curing process, the temperature rise of the film surface is only 5–10℃, which effectively avoids thermal damage:
The thermal shrinkage rate of PE films is ≤ 0.5%, and the overprinting accuracy deviation is controlled within ± 0.05 mm;
No crystal spots are formed on OPP films, and the clarity of printed patterns is improved by 30%.

For thin PET films (thickness ≤ 12 μm), the equipment adopts a low-irradiance gradual curing mode to avoid internal stress caused by instant curing of the films. The ink layer adhesion reaches grade 5B, withstanding 500 rubbing cycles without fading or damage, meeting the quality requirements of high-end daily chemical packaging.

High Efficiency & Energy Saving: Improving Production Capacity and Reducing Costs
With a maximum irradiance of 2000 mW/cm², the equipment enables rapid ink curing, increasing the printing speed to 350–500 m/min. The daily production capacity of a single printing press is raised from 50,000 m² to 120,000 m², representing a 140% improvement in efficiency. The service life of LEDUV light sources is 20,000–30,000 hours, more than 25 times that of mercury lamps, reducing the annual consumable cost by 90%. Its energy consumption is only 1/3 that of mercury lamps, saving a single printing press over 52,000 kWh of electricity annually. Calculated at an industrial electricity price of 1 CNY/kWh, it can save more than 50,000 CNY in electricity costs each year. In addition, the equipment supports quick job changeover (wavelength switching time ≤ 3 minutes), adapting to the customized printing needs of multi-variety and small-batch production.

Precision Curing: Ensuring Stable Printing Quality
Adopting a honeycomb LED array and microlens light homogenization design, the light spot uniformity reaches over 95% (illuminance difference between the center and the edge ≤ 3%), ensuring consistent curing of the ink layer across the entire printed surface with a color deviation ≤ ΔE 1.0 (per CIE LAB standards). In response to the differences in film surface tension, the equipment can adapt to different substrates through an intelligent dimming system (irradiance adjustment range: 10%–100%). The ink layer hardness is stably maintained at 2H–3H (tested by pencil hardness tester), and the scratch resistance is improved by 40%, solving the problem of insufficient edge curing in traditional processes.