Flexographic

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Dirty Print-Halos

Problem:

Pressure between plate and substrate is excessive.

Solution:

Reset plate pressure to “kiss” impression.

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Problem:

Plate or sticky-back tape is too hard.

Solution:

Use plate with softer durometer; switch to a cushion sticky-back tape.

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Problem:

Edges are cupped on plate.

Solution:

Check plate and replace if necessary.

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Problem:

Plate cylinder is out of round, causing intermittent halos.

Solution:

Check run-out of plate cylinder and anilox roll; replace plate and/or anilox roll.

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Sun Chemical offers a broad portfolio of inks, coatings, color software and brand color management for flexographic printing.

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