In the fields of consumer electronics, flexible displays and food packaging, thin film printing technology is developing rapidly towards ultra-thinness and high resolution. **UV Resin for Thin Film Printing** has become the core material for achieving micron-level pattern accuracy and industrial mass production due to its low viscosity, fast curing and excellent adhesion.
The T-7118F series resin launched by Shenzhen U-Sunny Technology is specially designed for thin film printing process optimization. It can be fully cured within 3 seconds at 300-400 mJ/cm² energy and is compatible with roll-to-roll (R2R) continuous production. It has been successfully applied to high-end scenarios such as OLED screen touch layer and food packaging barrier film, helping customers improve production efficiency by more than 40%.
Technical advantages and performance breakthroughs
1. Ultra-low viscosity and high-resolution printing
U-Sunny T-7118F resin has a viscosity as low as 180 cP (25°C) and has the following core features:
Nano-level leveling: surface tension <25 mN/m, can fill microstructures below 5 μm, and the printing line width accuracy reaches ±0.5 μm.
Bubble-free molding: degassing time <10 seconds (under vacuum environment), porosity <0.1%, suitable for optical-grade coatings.
High filler compatibility: can load 30% nano silver wires or ITO particles, resistivity <0.1 Ω/sq, suitable for transparent conductive film requirements.
2. High-speed curing and low shrinkage
Through the Hybrid Cationic/Free Radical System, T-7118F achieves a dual performance balance:
LED compatibility: adapted to 365–405 nm light sources, the curing speed is 50% higher than that of traditional resins (energy density 350 mJ/cm²).
Volume stability: curing shrinkage <1.2%, ensuring the accuracy of multi-layer film overprinting alignment (error <2 μm).
Deep curing ability: can penetrate 15 μm thick coating, curing degree >98% (FTIR detection).
3. Environmental protection and multi-functional adaptation
Zero VOCs formula: complies with FDA 21 CFR, EU 10/2011 food contact material standards, and passed SGS certification.
Excellent chemical resistance: ethanol wipe resistance >500 times (ISO 2812-2), salt spray resistance >72 hours (ASTM B117).
Optical tunability: refractive index 1.48–1.53 (@589 nm), haze <0.2%, meeting the needs of AR/VR optical films.
Industry applications and customer cases
1. Flexible OLED touch layer printing
In the manufacturing of folding screen touch sensors, T-7118F resin achieves high-precision silver line patterning:
Performance parameters: line width 3 μm, square resistance <0.05 Ω/sq, bending resistance >200,000 times (R=1 mm).
Customer case: After being adopted by a panel giant, the touch layer yield increased from 85% to 99.3%, and the cost was reduced by 30%.
2. High barrier food packaging film
Replacing the traditional PE laminating process, UV resin provides an efficient and environmentally friendly solution:
Barrier performance: oxygen transmission rate (OTR) <3 cm³/m²·day, water vapor transmission rate (WVTR) <1 g/m²·day.
Certification results: Passed Nestlé global packaging material standards and ISEGA food grade certification, and the carbon footprint was reduced by 55%.
3. Medical diagnostic test paper coating
U-Sunny resin ensures precise fluid control in the printing of the hydrophilic layer of biological test paper:
Technical breakthrough: contact angle <10°, fluid diffusion rate consistency CV value <2%, and detection error rate reduced to 0.8%.
Mass production data: After an IVD company introduced it, the test paper production capacity doubled, with an average daily output of 5 million strips.
Technology Trends and Future Directions
According to Smithers' forecast, the global thin film printing material market will exceed US$24 billion in 2025, of which UV resin accounts for more than 35%. Technology evolution focuses on the following directions:
Intelligent formulation system: Real-time adjustment of resin rheological properties through AI, dynamic adaptation of printing speed (10–100 m/min).
Application of bio-based monomers: Development of cellulose derivative resins with bio-based content >50% (U-Sunny has completed pilot verification).
Nano-functional enhancement: Embedding quantum dots to achieve color conversion, color gamut coverage NTSC 120%, power consumption reduced by 20%.
UV Resin for Thin Film Printing is redefining the industrial standard of thin film printing through the combination of high precision and high efficiency. Shenzhen U-Sunny Technology (U-Sunny) relies on innovative products such as T-7118F to provide global customers with end-to-end solutions from research and development to mass production. With the explosive growth of flexible electronics and green packaging, this technology will continue to create value in the field of high value-added manufacturing.
