Liquid UV lamination (also known as UV coating) is a finishing process that applies a liquid coating to printed materials, which is then cured instantly with ultraviolet (UV) light. It gives the surface a glossy, matte, or satin finish and enhances durability, water resistance, and color vibrancy.

Here's a step-by-step guide on how to do liquid UV lamination:

What You’ll Need:

• UV Coating Machine (or a manual roller and UV curing lamp for smaller jobs)

• UV Coating Liquid – water-based or solvent-based (gloss, matte, satin)

• Printed Substrate – typically paper or cardstock

• UV Curing Unit – integrated or standalone lamp

• Protective Gear – gloves, apron, eye protection (UV chemicals can be hazardous)

Steps for Liquid UV Lamination

1. Prepare the Printed Material

• Ensure ink is fully dry before applying the UV coating.

• Use coated or glossy paper stock for best results.

• Avoid applying over toner-based prints (laser or digital) unless specifically formulated UV coating is used.

2. Apply the UV Coating

• Manual: Use a soft roller or sponge to evenly spread the UV coating across the print.

• Automatic: Feed the prints into the UV coating machine; it applies a thin, consistent layer.

3. Cure with UV Light

• Immediately after coating, expose the sheet to UV light.

• UV curing happens in seconds, hardening the coating to a durable finish.

• Be sure the lamp power and exposure time match the coating thickness.

4. Inspect and Stack

• Check for even coating, no streaks, bubbles, or tackiness.

• Once cured, sheets can be stacked or further processed (cutting, folding, etc.).

Safety and Tips

• Work in a well-ventilated area.

• Store UV coatings in cool, dark environments to prevent premature curing.

• Regularly clean rollers and trays to avoid buildup.

• UV coatings cannot be printed on afterward (coated areas are non-porous).