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Discuss the different plastisol screen printing inks and curing methods on the market. Share tips on getting the best results with the different ink manufacturers.



What's wrong with the white in this print?

 
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Old September 13th, 2011 Sep 13, 2011 5:12:45 PM -   #31 (permalink)
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Default Re: What's wrong with the white in this print?

Until you get that new press, you will still be using the one you have so-

Be sure you are using the manufacturer's specified mesh size for the ink you are using. if between 110-156, 110 will give more ink deposit, 156 will give a softer hand. But both will give acceptable ink coverage.

Be sure the mesh is at the manufacturer's specified tension for the optimum mesh opening for the ink to pass through with minimum off contact and squeegee pressure to "lay the ink on top the garment"

Be sure your Emulsion Over Mesh (EOM) is between 10% - 20% of your mesh thickness (microns) on the print side. This will create a sufficient stencil well for your fill stroke to fill the well. Your print stroke pressure should be just hard enough to kiss the top of your garment for the ink to be relived from the well and sit on top your garment. This will be only accomplished with specified mesh tension and little off contact (1/16" - 1/38")

It's clear in the pics that low mesh tension and incorrect off contact is smearing the inks.

Happy Printing..
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Old September 13th, 2011 Sep 13, 2011 6:01:15 PM -   #32 (permalink)
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Default Re: What's wrong with the white in this print?

Quote:
Originally Posted by chrispunx
Try a fill stroke instead of a flood stroke.
What is a fill stroke?
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Old September 13th, 2011 Sep 13, 2011 6:51:34 PM -   #33 (permalink)
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Default Re: What's wrong with the white in this print?

Its like a flood stoke, except its a hard stoke to fill in the open areas of the mesh.
 
 
Old September 13th, 2011 Sep 13, 2011 6:54:34 PM -   #34 (permalink)
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Default Re: What's wrong with the white in this print?

YouTube - Broadcast Yourself.
 
Old September 13th, 2011 Sep 13, 2011 10:30:07 PM -   #35 (permalink)
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Default Re: What's wrong with the white in this print?

Quote:
Originally Posted by chrispunx
Its like a flood stoke, except its a hard stoke to fill in the open areas of the mesh.
That is a flood stroke.
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Old September 14th, 2011 Sep 14, 2011 5:20:32 AM -   #36 (permalink)
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Default Re: What's wrong with the white in this print?

Really? I thought it was when you pull the ink over the image...the guy in the video called what he was doing a fill stroke and said it wasn't a flood stroke.
 
Old September 14th, 2011 Sep 14, 2011 11:55:12 AM -   #37 (permalink)
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Default Re: What's wrong with the white in this print?

Your link doesn't take me to a video, it takes me to what looks like a playlist with fail blog videos and some other stuff. I think you've found someone giving names to different techniques of the same thing. Here is a thread discussing this very thing:
https://www.t-shirtforums.com/screen-...ng/t16964.html
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Old September 14th, 2011 Sep 14, 2011 3:27:44 PM -   #38 (permalink)
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Default Re: What's wrong with the white in this print?

Video/Article I think this was the vid he meant to post..

I understand that flood strokes are used to cover the open areas of the stencil to prevent ink from hardening in said open areas when using water base inks. The thick build up from the flood stroke will cause the air to just dry the top layer of the ink and not all the way down to the stencil open area.

I heard on autos the flood is used interchangeably for both purposes. It also keeps the screen lubricated and cool from the higher squeegee pressures and constant fiction on the screen.
Heat build up plays a big role in ghosting/hazing on screens so lets keep em cool and lubricated with a flood stroke.

Some believe screen printing is an art and some say it's science and standards.

I want expected results and repeatability.
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Last edited by starchild; September 14th, 2011 at 03:32 PM.. Reason: added link
 
Old September 14th, 2011 Sep 14, 2011 5:48:47 PM -   #39 (permalink)
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Default Re: What's wrong with the white in this print?

Yeah the bill hood videos.
 
Old September 14th, 2011 Sep 14, 2011 6:26:01 PM -   #40 (permalink)
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Default Re: What's wrong with the white in this print?

"The fill stroke is my neologism for a flood stroke." He made up the phrase. Basically all he's saying is that you achieve nothing if you don't fill the mesh with the flood stroke. With water or solvent based inks, you have to flood to prevent the mesh from clogging, with plastisol it just helps get a good even print. I've seen people, mostly in youtube videos, just lightly drag a squeegee over the print area but that isn't how I was taught to flood; but then I worked in a sign shop for years where it was important to flood the screen properly otherwise you'd end up with a clogged screen or ruined print. Rather than make up a new phrase, it would probably be more productive to just say, 'this is the right way to flood a screen.'
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Old September 14th, 2011 Sep 14, 2011 6:54:45 PM -   #41 (permalink)
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Default Re: What's wrong with the white in this print?

And there's the rub,

Anyone that does not have that years experience as you do, will be using terminology and standards as they are influenced.

This is not a screen print industry thing, it happens across all industries.

If the schoolofscreenprinting has 6 students per week for the last 10 years, then in all fairness, there is a fill stroke.

Just like your yodas told you there is a flood stroke master jedi.
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