Paper Packaging

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Print Striations

Problem:

Ink is metered with a 2 roll system.

Solution:

Reduce ink on anilox roll by:

  1. Increasing metering roll pressure
  2. Using a harder durometer crown wipe roll
  3. Changing to doctor blade metering
  4. Changing ink formulation

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Problem:

Anilox rolls are plugged worn or dirty. Rolls have wide cell lands or coarse screens.

Solution:

Replace or clean anilox rollers. Change ink viscosity or formulations.

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Problem:

Printing plate is too hard.

Solution:

Use plates with a softer durometer.

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Problem:

Ink viscosity is too low.

Solution:

Raise ink viscosity by adding fresh ink.

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Problem:

Printing plates are glazed.

Solution:

Clean or replace plates.

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Problem:

Ink formulation is incorrect.

Solution:

Consult your local Sun Chemical representative.

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

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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.

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