Gravure

Print page

Donuts

Problem:

Ink is drying too fast.

Solution:

Add small amounts of slower drying solvents.

______________________________________________________________________

Problem:

Ink viscosity is too high.

Solution:

Reduce ink viscosity and adjust for better flow out.

______________________________________________________________________

Problem:

Foaming is occurring in the ink.

Solution:

Minimize ink free fall and avoid over-agitation.

______________________________________________________________________

Problem:

Solvent balance is poor.

Solution:

Consult your local Sun Chemical representative.

______________________________________________________________________

Problem:

Film treatment is marginal.

Solution:

Check film for proper treatment.

______________________________________________________________________

Problem:

Porosity in substrate is too high.

Solution:

Use lower porosity substrate or try adding wetting agent to the ink.

______________________________________________________________________

Problem:

Cell volume is excessive for high hold out substrates.

Solution:

Reduce cell volume on high hold out substrates.

______________________________________________________________________

Problem:

Cell geometry is inappropriate.

Solution:

Adjust cell geometry.

______________________________________________________________________

Problem:

Ink may be too tacky.

Solution:

Make the ink harder using an alternate resin.

______________________________________________________________________

Problem:

Solvent (blend) is too polar, picking up moisture.

Solution:

Add ester or aromatic aliphatic hydrocarbon.

*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 portfolio of inks, coatings, color software and brand color management for gravure printing.

Learn About Sun Chemical's Printing Solutions for Gravure