Q1: What are the key advantages of UV-curable white ink for screen printing?
A: It provides instant curing, enabling high-speed production with minimal drying equipment. The ink achieves exceptional opacity and whiteness even in thin layers, along with strong adhesion and durability on challenging substrates like films, plastics, and coated surfaces.
Q2: On which substrates does this ink perform best, and are there any limitations?
A: It performs well on non-absorbent materials such as PET, PVC, PP, acrylic, glass, and metals. For porous or untreated surfaces (e.g., uncoated paper, some textiles), adhesion and opacity may vary—pre-treatment or a primer is often recommended.
Q3: What are the optimal screen printing and curing parameters for consistent results?
A: Use appropriate mesh counts (typically 120-200 T for balance of opacity and detail) and ensure proper ink viscosity control. Cure with sufficient UV energy (300-500 mJ/cm² under 365-395 nm lamps) to achieve full adhesion and resistance. Avoid over-pigmentation or excessive thickness to prevent cracking.