Paper Packaging

Print page

Dirty Print – Feathering

Problem:

Excessive plate impression.

Solution:

Reduce plate to substrate impression.

______________________________________________________________________

Problem:

Printing plate too hard.

Solution:

Use plates with a softer durometer.

______________________________________________________________________

Problem:

Anilox to plate pressure is excessive.

Solution:

Adjust to reduce anilox impression. Check plate level.

______________________________________________________________________

Problem:

Plates are not level, worn, cupped, glazed or mismatched.

Solution:

Level, build up, clean or replace entire mount.

______________________________________________________________________

Problem:

Ink film is too thick.

Solution:

Reduce ink film thickness by lowering viscosity, increasing ink metering effectiveness or by decreasing anilox volume.

______________________________________________________________________

Problem:

Ink is drying too fast.

Solution:

Add glycol to slow drying or increase machine speed.

______________________________________________________________________

Problem:

Ink pH is too low.

Solution:

Check and adjust pH.

______________________________________________________________________

Problem:

Paper dust collects in ink or sticks to plate.

Solution:

Clean press, plates and environment. Ensure clean sharp slitting and sheeting.

______________________________________________________________________

Problem:

Ink film applications are uneven due to press or uneven plates.

Solution:

Adjust ink metering, print and anilox impressions, and roll parallel, or replace plates.

______________________________________________________________________

Problem:

Ink pH is too low.

Solution:

Check and adjust pH (non-pH stable inks only).

*The solutions provided from the troubleshooting guide are general in nature, please contact or your sales or technical representative to discuss specific issues.

Information about Sun Chemical

Sun Chemical offers a broad ink and coating product portfolio with a wide range of capabilities that include inks, coatings, color software and brand color management for paper packaging.

Learn About Sun Chemical's Solutions for Paper Packaging