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Topic: Bleach and water = Degreaser?  (Read 2802 times)
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splinter364
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« on: May 12, 2006 10:02:05 AM »

Hey craftster.org!
                         I havent degreased my screen since ive been using it (a month or so) and I found this article on www.ehow.com

http://www.ehow.com/how_10233_prepare-silk-screen.html

Is that a good idea instead of degreasing a screen?

Also, after I took off my emulsion a few times from making a screen etc etc, you can still see some of the stencil still on the screen after the emulsion is gone, is that okay?
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entriq
« Reply #1 on: May 12, 2006 02:43:47 PM »

I have never used bleach and Mr. Clean as a degreaser.  I am not sure of the benefits of that, but I have never used it, and I have prepped thousands of screens over the years.

I have always used a good emulsion remover to reclaim the screen.  You will often get "ghost" images there the ink has stained your fabric.  You can usually live with these for the most part.  It can affect the next print, but I wouldn't get too worried about that until it actually does.  If you feel you need to remove the ghost images, there are ghost removers.  Some of them are pretty caustic, and they are hard on the screen.  Still... I usually use them every 5 or 10 times I have reclaimed a screen.

If the stencil itself is staying in the screen, you might need to do a better job of reclaiming the screen.  It can cause blocking, and as you reuse the screen for other stencils, they all build up, and any emulsion that is left in the screen after washout will harden even more each time you expose the next screen until you just can't remove it no matter what you do.  Of course, sooner or latter the screen gets ripped or becomes loose and you need to start fresh anyway.

As far as what to degreaser - I have typically used Ulano Screen Degreaser Liquid No. 3 or some similar product.
I have also used stuff like Ulanogel 23 Roughening/Degreasing Gel, Haze Remover Paste No. 78 , and ulano ghost remover.

A poor mans degreaser that I have often used is Joy hand dishwashing liquid.  It works fine as a degreaser and wetting agent.  Just don't tell your screen you are using it, as you will hurt its feelings.
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entriq
ms_wu
« Reply #2 on: June 07, 2010 06:46:46 PM »

My screen is still waiting for either Joy or Mr. Clean to work at removing screen filler I used for a stencil last summer. 

Now summer is coming and I am so sad I may have to give up on even getting it cleaned out.  Should I go for purchasing the Ulano products or has it been too long sicne I could probably replace the screen for the cost of the products?  I put hours into scrubbing with Mr. Clean to no avail.  I have avoided using the screen filler ever since (the first two times I used it is was fine).
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lovevol
« Reply #3 on: July 11, 2010 05:08:57 PM »

Hey Entriq, A degreaser is different than a screen filler/emulsion remover. A degreaser is used AFTER the filler has been removed to clean off any dirt, dust, excess chemicals. At my shop we use an all purpose cleaner from Mrs. Meyers Clean Day or Green Clean (by clorox i think?). In the past i have used commercial degreasers and have found that it doesn't make too much of a difference.

What kind of screen filler are you using? If you have a Pearl Paint or Micheal's store near you they have a small selection of screen printing chemicals, if not you can buy from DickBlick.com or Silkscreeningsupplies.com.
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