Due to differences in surface properties of various substrates as well as varying performance of UV ink in adhesion and flexibility, peeling and flaking may occur on certain materials. UV printer coatings are required to improve the adhesion and bonding strength of ink on material surfaces

ABS Coating

A wide range of ABS coatings are available, compatible with wood boards, kraft paper, PVC, ABS, gypsum boards, acrylic, PS, plastics and other substrates. They come in transparent and white variants, both capable of delivering glossy and matte finishes.

Metal Coating

CP Metal Coating: For metallic substrates, faster drying speed. Thicker coating film is recommended.

DY Metal Coating: For metals and ceramics, slower drying than CP grade.

Suitable for aluminum, tinplate, copper sheet, aluminum alloy, tempered glass (special surface pretreatment required). Available in transparent and white, both supporting glossy and matte effects.

Selection principle depends on surface smoothness: use DY grade for smoother surfaces such as ceramics (smoother than glass).

Silicone Coating

Applicable to silicone, rubber and similar materials. These substrates feature low surface activity and must undergo flame treatment; otherwise poor adhesion will result. Avoid over-spraying thick coats, as thick layers are difficult to fully cure.

Glass Coating (PL Grade)

For ceramic tiles, acrylic glass, tempered glass, ceramics and crystal materials (special pretreatment necessary). Transparent and white options offered, with glossy and matte finishes achievable.

For products requiring boiling resistance, mix with white primer to enhance adhesion. Avoid high-concentration white primer, which may dissolve printed patterns. Double coating application yields optimal results.

Leather Coating

Compatible with PVC leather, genuine leather, leather goods and PU leather. Transparent and white types available, both able to produce glossy and matte surfaces.

PC Coating

PC is a rigid substrate that normally presents poor ink adhesion. PC coating works for polymer materials starting with letter P, including PS, PP and PVC.

Wiping Application Method for UV Printer Coatings

Take the non-woven fabric used for cleaning UV print heads and fold it four times to form an 8-layer thick pad.
Dip one side of the folded fabric into coating liquid, then wipe the substrate gently in one single direction.
Re-wipe each strip once at intervals, working across the surface strip by strip.

Precautions: Do not rub back and forth on the same spot. Apply a thin, unidirectional coat to leave barely visible wipe marks.

What are the classifications of coatings for UV printers?