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Discuss the different types of equipment needed for screen printing. Topics include manual screen printing presses, automatic presses, dryers, folding machines, starter kits and high end machines.

Drips on Screens



 
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Old July 13th, 2009 Jul 13, 2009 7:24:32 AM -   #1 (permalink)
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Default Drips on Screens

I have a batch of screens theat I coated last night and several of them dripped a bit onto those below them. The drips aren't in an area where I will be exposing they are towards the bottom of each screen. So long as they aren't interfering with my exposed images should I be okay to use these? Are there any reason why I shouldn't use them?
 
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Old July 13th, 2009 Jul 13, 2009 8:06:13 AM -   #2 (permalink)
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Default Re: Drips on Screens

I say if the drips arent interfering with the design..go ahead and use them....next time you coat..scrape the screen a little better to get some of the excess emulsion off.

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Old July 13th, 2009 Jul 13, 2009 8:23:24 AM -   #3 (permalink)
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Default Re: Drips on Screens

does anyone have any experience with this - and have had success?
 
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Old July 13th, 2009 Jul 13, 2009 8:35:41 AM -   #4 (permalink)
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Default Re: Drips on Screens

Quote:
Originally Posted by Brockton
does anyone have any experience with this - and have had success?
If the drips are not allowing your screens to lay flat while burning, you may have trouble burning the screen. It depends on how severe the drips are but it's worth a shot?
 
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Old July 13th, 2009 Jul 13, 2009 8:56:47 AM -   #5 (permalink)
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Default Re: Drips on Screens

yeah - i have a self-made rig that will allow me to lay the drippy part of the screen off the glass so the rest is flat... Ryonet.com recommends that I post-expose the drippy areas - does anyone concur with that recommendation? and if so how long would you suggest?
 
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Old July 13th, 2009 Jul 13, 2009 10:23:52 AM -   #6 (permalink)
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Default Re: Drips on Screens

Not sure about pre-exposing drips, not even sure how you would do that. As for how to avoid the drips, Inked already stated it. Basically you are using way too much emulsion. Scrape off excess and you will not have drips on future screens.
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Old July 13th, 2009 Jul 13, 2009 3:26:22 PM -   #7 (permalink)
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Default Re: Drips on Screens

I get these alot... They have yet to interfere with printing.. I once had a screen that was halfway covered in those.. I just reclaimed it..

I store my screens in a large cardboard box.. (Hey.. it works so far.)
 
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Old July 14th, 2009 Jul 14, 2009 12:18:51 AM -   #8 (permalink)
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Default Re: Drips on Screens

If they're outside of the image area, don't worry about it. They might need taping off, and they might be harder to reclaim, but they're not going to downright screw anything up.
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Old July 14th, 2009 Jul 14, 2009 12:19:35 AM -   #9 (permalink)
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Default Re: Drips on Screens

Quote:
Originally Posted by JeridHill
Not sure about pre-exposing drips, not even sure how you would do that.
Post-expose, not pre-expose.
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Old July 14th, 2009 Jul 14, 2009 11:23:33 AM -   #10 (permalink)
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Default Re: Drips on Screens

there was a thread on this a month or so back explaining everything and how to fix it. I'll see if I can find it.

Emulsion drying drip marks
 
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Old July 15th, 2009 Jul 15, 2009 7:43:45 AM -   #11 (permalink)
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Default Re: Drips on Screens

Quote:
Originally Posted by LKent
I tend to have this problem from time to time, usually when i rush a screen. Its excessive ink because you did not squeege enough off. It takes practice. Maybe the squeege you are using to coat the screen is dulling out on you. Or maybe you aren't using a better angle.

if not in the print area just peel it off with a piece of cardboard while its wet or dry to smooth it out and tape it up.
I think you misread the post. It's during the making of his screens, it's emulsion and it's been established he's using too much emulsion and to scrape excess off.
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