Author Topic: multicolor wow discharge  (Read 7353 times)

Offline ericheartsu

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Re: multicolor wow discharge
« Reply #45 on: February 20, 2013, 03:35:59 PM »
We;ve always found printing white last gets the brightest result for whites at least.


OK update on this. So we ran the job, not a single problem. I really think you guys helped me figure out the screen coating and post exposures really aided in fixing this problem. I'm trying to take pics right now
Night Owls
Waterbased screen printing and promo products.
www.nightowlsprint.com 281.741.7285


Offline ZooCity

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Re: multicolor wow discharge
« Reply #46 on: February 20, 2013, 04:20:10 PM »
Awesome. 

I should qualify my flashing statement-  we have never ran a flash on a wb/dc job and we run up to 6 colors.  I just see where a "half" flash, just enough to move a little water out, in the middle of, say, a 6 co run is a quick and easy fix and would increase print quality and maybe even save a little ink by preventing the need to 2x stroke the first color(s) down.

Plastisol tends to squish around and we all have to fight that build up with various approaches but when using it but WB is so different in that you are dealing with the suction of a soaking wet ink layer and sometimes getting just a titch of that water out of there makes an immense difference. 

Heck, to achieve this effect you could probably just run a plain old fan in one head, like a cool down, so long as you could buffer it to keep from drying out adjacent screens.  No heat then and not much more in energy costs but it does eat up a head.

Offline ebscreen

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Re: multicolor wow discharge
« Reply #47 on: February 20, 2013, 04:24:27 PM »
How do you guys keep your pallets tacky with no flash? We'll flash 1-2 sec or so even if we don't need it
just to keep the boards sticky.

Offline ZooCity

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Re: multicolor wow discharge
« Reply #48 on: February 20, 2013, 04:29:02 PM »
I do extra tack (TexTac, rolled on with a "hot dog" foam roller) on the image area and flash the platens after applying but not during printing.  First two shirts are damn near glued on but it holds up for a good while.

I like the put a gap on the belt between sizes so I'll typically stop and mist/scrub/reapply tack and let them dry while I go grab and stack shirts or put more ink in the screen or have a smoke or whatever.  I get nervous about the wb tack and wb inks.

Offline Admiral

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Re: multicolor wow discharge
« Reply #49 on: February 24, 2013, 10:46:24 PM »
I'm near the end of a big run, 3 color back, 4 color front all waterbase no flash

I'm getting build up though mostly on the last screen, after 500 or so shirts I need to wipe a couple screens.

This isn't discharge since it's on natural color shirts, using all 150S mesh.

Any advice?
« Last Edit: February 25, 2013, 02:28:13 AM by Admiral »

Offline Itsa Little CrOoked

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Re: multicolor wow discharge
« Reply #50 on: February 24, 2013, 11:47:53 PM »
I haven't done a largish discharge (or straight wb) multi-color W.O.W. for a while, with large areas of spot color. That's when I have.a problem.

But the next job that fits the scenario, I'ma post-exposing that sucker in a serious kind of way, and then I'll use some hardener. I've got to rule out any possible link to the stencil. Rule it out, or possibly nail down the cause. I posted the Zombie Skin problem on another forum 2 years ago, and didn't find a suitable solution.

Maybe I'm just dense....