Foil problems can come from incompatible surfaces, unsuitable artwork or a mismatch between the file and production process. The useful checks depend on whether the job uses hot stamping, digital foil or another method.
Adhesion and coverage
Check the foil grade against the actual stock, ink and coating. Ink underneath is not automatically a fault; some systems are designed for it. Incompatible surfaces or incorrect production conditions can cause patchy transfer or weak adhesion.
Registration and fine detail
Very fine shapes, small gaps and tight alignment can be demanding. Follow the chosen process limits and registration allowances. Enlarging details or simplifying a border may improve reliability without losing the intended effect.
Confirm the production file
- Supply the requested mask, separation or tooling artwork.
- Follow confirmed knockout and overprint instructions.
- Check size, version and the relationship between foil and printed artwork.
- Discuss a sample for unfamiliar materials or high-consequence work before committing the full quantity.