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How to Address Defects in UV 3C Coatings (Part 5)
In the practical production of UV 3C coatings, cratering is a surface defect caused by poor leveling. It manifests as circular pits on the wet film surface, resulting from differences in surface tension between the top and bottom layers, and is typically visible through the substrate. The presence of cratering compromises the continuity and integrity of the coating, adversely affecting both appearance and protective performance. To address this defect, appropriate measures must be implemented across multiple fronts, including adjustment of the coating’s surface tension, enhancement of the substrate’s surface energy, and effective contamination control. This paper outlines methods for mitigating cratering by focusing on coating formulation optimization, substrate preparation, and control of the application environment.
2026-07-01
How to Address Defects in UV 3C Coatings (Part 4)
In the actual production of UV 3C coatings, uneven gloss is one of the common defects that compromise the consistency of a product’s appearance. It manifests as inconsistent gloss levels across different areas of the same part—some regions appear shiny, while others appear dull—thereby undermining the overall visual uniformity. To address this defect, it is necessary to implement targeted measures in areas such as coating thickness uniformity control, optimization of curing energy distribution, and management of the substrate surface condition. This paper outlines approaches for mitigating uneven gloss by focusing on adjustments to the spraying process, maintenance of curing equipment, and substrate preparation.
2026-07-01
How to Address Defects in UV 3C Coatings (Part 3)
In the practical production of UV 3C coatings, bubbles and pinholes are common defects that compromise coating density and surface smoothness. Bubbles appear as circular blisters of varying sizes on the coating film, while pinholes are the tiny depressions left behind after these bubbles rupture. Addressing these defects requires implementing targeted measures across several stages, including compressed air quality, control of coating film thickness, substrate condition management, and coating degassing. This paper outlines methods for mitigating bubble and pinhole defects by focusing on air‑source purification, adjustments to the coating application process, substrate preparation, and coating formulation management.
2026-07-01
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Bossin cordially invites you to visit the 2025 China International Coatings Exhibition.
UV monomer with a curing speed more than 30% faster than that of trifunctional monomers
Low-irritation version of HDDA
A high-refractive-index UV monomer
Although it’s quite ordinary, it offers great value for the price.
A UV monomer used in fields such as PCB ink, UV curing agents, and offset printing ink.
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