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screen printing => Waterbase and Discharge => Topic started by: noortrd on February 25, 2014, 09:38:12 AM

Title: pigment color migration
Post by: noortrd on February 25, 2014, 09:38:12 AM

Two color water based job. One is white and other is red. Before heating the color are fine. After dryer the red color migration in to white.  Where is the problem in white or red?.

Title: Re: pigment color migration
Post by: tonypep on February 25, 2014, 10:05:34 AM

Probably neither. Pre-press or on press issues more likely

Title: Re: pigment color migration
Post by: Colin on February 25, 2014, 10:06:54 AM

Do you have new base, pigments, or additives in either ink?

I am assuming this is a brand new problem....

Sounds like some kind of wicking is happening.  Potentially, the problem is a bad product.  Or, of mixing in to much of an additive.  Possibly a bad pigment batch...

Did the print cure out the same?  Does it feel the same/look the same as all other waterbase prints?

Did it pass a wash test?

Title: Re: pigment color migration
Post by: noortrd on February 28, 2014, 12:54:23 PM

Washing failed on red color. May be the color quality not good.

Title: Re: pigment color migration
Post by: Colin on February 28, 2014, 03:32:34 PM

Definitely call the Ink Company and ask!  Bad pigments can happen...

Title: Re: pigment color migration
Post by: Matsui (PVC Free Inks) on March 13, 2014, 06:36:34 PM

Please know that with some water base inks it is important to flash the first color very well before you print the second.

Title: Re: pigment color migration
Post by: tonypep on March 14, 2014, 06:30:26 AM

I suppose so but we never do. If pre-press is done correctly this should be a rae fix.