Troubleshooting Guide - Pressroom Coatings

Issue: Uneven Coating Weights on Sheet

Potential Causes

Uneven pressure between coater rollers

Solution: Adjust coater rollers. Achieve 'kiss contact.'

Uneven pressure between applicator roller and blanket

Solution: Adjust applicator roller to blanket.

Uneven pressure applicator roller to plate

Solution: Adjust applicator roller to plate. Achieve 'kiss contact.'

Uneven pressure between blanket and impression

Solution: Adjust pressure and/or check for low areas/smashes in blanket and packing.

Dried coating within coating system

Solution: Clean rollers, blanket and impression cylinder.