Wet-on-Wet Screens Sticking

[Racer Tees]

I printed a halftone underbase film, but haven't burned it.  Tried some WOW base, first mixed in at 15%, then at 50% just to exaggerate, nothing.  Same problems.

Got my hands on some Union Ultrasoft inks for the top colors.  Much better, but still sticking slightly.  The buildup isn't as bad, and it may be doable after a few strike offs.

I can say for sure it is not a heat issue.  Print/flashed an underbase right before packing up to come home for the night. Let it sit after I shut everything down and prepared to head home.  Same problem as before.

Since trying out the Ultrasoft ink for top colors we have less stick issue if I get the off contact up above 1/4".  Every screen is 26n on the nose. May need to dial the press in better.  Will go over that sometime tomorrow.

[screenxpress]

I'd be really interested to find out if any change with the halftone underbase. 

Let us know.

[Racer Tees]

My concern with the halftone underbase is losing opacity of the top colors.  I have to PFP the base to get the top color opacity that I would like to see.