UV printing uses inks that cure when exposed to UV light. The result is durable, often scratch-resistant, and can print on a wide range of rigid and flexible substrates. Adhesion depends on substrate, surface prep, and cure; wrong combination leads to delamination or scratching.
Curing and adhesion
Ink must cure fully to achieve advertised durability. Under-cure can cause soft or tacky ink that scratches or lifts. Adhesion depends on the substrate: some plastics need primer or corona treatment; without it, ink can peel.
Durability expectations
UV print is durable when substrate and surface are compatible and cure is complete. Outdoor exposure still causes eventual fade; UV-resistant laminate can extend life. Abrasion resistance is good when cured correctly.
Before you specify UV
• Confirm the substrate is approved for UV (some plastics are not).
• State indoor vs outdoor and expected lifespan.
• Ask if primer or surface treatment is needed for your material.
Common mistake
Assuming all rigid substrates hold UV ink the same. Uncoated or low-surface-energy materials can fail adhesion. Confirm compatibility with the printer before production.