LIJUNXIN INK Innovates Air Dry PC Direct Printing Screen Printing Ink

With the surge in the use of polycarbonate (PC) materials in global consumer electronics and daily necessities—according to Grand View Research, the global PC plastics market is expected to reach $24.65 billion in 2022—surface printing technologies face higher demands for safety and compatibility. LIJUNXIN INK, a professional ink manufacturer, has launched Air Dry PC Direct Printing Screen Printing Ink, a self-drying PC direct printing screen ink. With its breakthrough environmentally friendly formula and engineering compatibility, it provides an innovative solution for high-end product surface decoration.

This ink utilizes a silicone-modified acrylate copolymer system. By precisely controlling the resin molecular weight and polar group distribution, it achieves molecular-level penetration and cross-linking on PC substrates without baking. SGS testing and certification demonstrates a drying time of only 12-15 minutes (25°C, 65% RH), and cross-grid adhesion reaches the highest ASTM D3359 Class 5B rating. This addresses the industry pain point of traditional solvent-based inks causing PC substrate deformation due to high-temperature baking (stress cracking is common at temperatures above 80°C). Furthermore, its environmental safety is noteworthy: VOC content is less than 35g/L, and it complies with EU EC1907/2006 (REACH) Annex XVII heavy metal limits (lead, cadmium, and mercury content less than 0.01ppm), making it suitable for direct use in food contact applications such as baby bottles and drinking cups.

Core Technology Advantages:

Broad-spectrum compatibility: Optimal compatibility for 320-420 mesh screen printing, with a leveling index ≤35μm (GB/T 9754), meeting the demands of precision printing on surfaces such as electronic product shell logos and complex curved surfaces of helmets.

Environmental Weatherability: Gloss retention >90% after 3000 hours in QUV accelerated aging testing (ISO 11507), alcohol rub resistance >500 times (GB/T 23989).

Color Expressiveness: Pigment particle size D50 ≤1.2μm (ISO 13320), color difference ΔE ≤0.8 (D65 illuminant), and support for over 95% Pantone color coverage.

LIJUNXIN INK's concurrently developed proprietary treatment agent system achieves secondary wetting on surfaces with residual release agent (contact angle >85°), reducing ink spreading tension to 28mN/m. This significantly improves the printing yield of recycled PC materials for applications such as luggage and automotive interiors. According to third-party testing, PC baby bottles printed with this ink process maintain a 4H pencil hardness (ISO 15184) after sterilization at 121°C.

With growing global awareness of sustainable consumption, Air Dry PC Direct Printing Screen Printing Ink has obtained US FDA 21CFR 175.300 and German LFGB 30/31 food grade certifications. LIJUNXIN INK leverages patented nano-coating technology (ZL202210XXXXXX.X) to further reduce ink viscosity fluctuation to ±5% (at 25°C), ensuring consistent printing during high-volume production and helping electronics OEMs reduce production line energy consumption by 40%.

"The low surface energy and strong chemical resistance of PC materials have long created barriers to direct printing technology," said the head of a materials laboratory at an international testing agency. "Ink solutions that combine instant drying with food safety will reshape the printing process paradigm for daily necessities." LIJUNXIN INK will continue to optimize bio-based resin replacement technology, promote the evolution of screen printing towards zero carbon emissions, and enable green upgrades in the global consumer manufacturing industry.