printech,June,2004Re: Ask PNEAC: Undesirable Texture in Ink Finish

printech, June, 2004
Re: Ask PNEAC: Undesirable Texture in Ink Finish


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From: Gary Jones (
gjonesprinting@aol.com)
Date: Wed, 30 Jun 2004 08:26:31
Your inquiry to PNEAC regarding an "orange peel-like" texture on anodized aluminum was forwarded to the Technical Information Desk. GATF specializes in lithography, so I am most familiar withlithography. The orange peel pattern is often associated with the surface energy or dyne level of the substrate being to low for the ink. Oil and other contaminates on the surface of the substrate can change the surface energy properties. In litho we like to see the dyne level on non-porous substrates between 40-50 dyne, below 35 dyne the inks do not adhere and will pool causing the orange peel appearance. Printers often corona treat or pre-treat the substrate with a special coating to raise the dyne level. Contact the ink manufacture for their technical assistance.

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