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Discuss water base and discharge screen printing inks and curing methods. Share tips on getting the best results with the different ink manufacturers.



Intro to water based printing?

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Old April 12th, 2010 Apr 12, 2010 8:51:12 AM -   #1 (permalink)
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Default Intro to water based printing?

Hello, everyone. In the next few months I have some designs I want to create, and I'd love for them to have a really soft hand.
From what I've heard, water based inks create the softest of soft hands.
Do I have an uphill battle ahead of me if I've never printed water based before? Any recommendations in the way of ink brands, mesh counts, difficulties to watch out for etc?
Thanks in advance!
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Old April 12th, 2010 Apr 12, 2010 8:59:29 AM -   #2 (permalink)
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Default Re: Intro to water based printing?

Quote:
Originally Posted by teezecrost
Do I have an uphill battle ahead of me if I've never printed water based before? Any recommendations in the way of ink brands, mesh counts, difficulties to watch out for etc?
I dont think you will have to many challenges... I would suggest high mesh, because of the light consistency of the ink. Also, remember not to dump a lot of ink in the screen, because it will dry.

Practice...practice...practice.
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Old April 12th, 2010 Apr 12, 2010 9:08:06 AM -   #3 (permalink)
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Default Re: Intro to water based printing?

Try looking into discharge ink, if you want to print on dark t-shirts.
 
 
Old April 12th, 2010 Apr 12, 2010 9:09:28 AM -   #4 (permalink)
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Default Re: Intro to water based printing?

Do I need to use a different emulsion etc so my stencil doesn't dissolve? Really don't know a lot about this stuff.
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Old April 12th, 2010 Apr 12, 2010 9:16:42 AM -   #5 (permalink)
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Default Re: Intro to water based printing?

Thanks, Anthony. would discharge kind of act like my underbase for the water based inks?
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Old April 12th, 2010 Apr 12, 2010 10:00:42 AM -   #6 (permalink)
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Default Re: Intro to water based printing?

Quote:
Originally Posted by teezecrost
Do I need to use a different emulsion etc so my stencil doesn't dissolve? Really don't know a lot about this stuff.
Yes, you should use emulsion formulated for waterbased inks. Otherwise, the stencil will start to dissolve after a few prints.

Ryonet has an excellent series of videos on youtube walking you through all the steps of waterbased and discharge printing: YouTube - Ryonet's Channel
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Old April 12th, 2010 Apr 12, 2010 11:20:50 AM -   #7 (permalink)
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Default Re: Intro to water based printing?

Quote:
Originally Posted by teezecrost
Thanks, Anthony. would discharge kind of act like my underbase for the water based inks?
It sure could.
 
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Old April 13th, 2010 Apr 13, 2010 8:34:39 PM -   #8 (permalink)
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Default Water-Based Homework

Water-Based Ink Homework
If you belong to the SGIA, you have access to water-base evangelist Charles Leach's terrific articles.


Getting into Water-Based Inks on Dark Garments
By Terry Combs
SPM December 1999
Getting into Water-Based Inks on Dark Garments | ScreenWeb | screenweb.com

Tackling Water-based Inks For the First Time
Oct 2007 By Jeff Proctor Impressions
Tackling Water-based Inks For the First Time

Water-Based Inks: An Eco-Friendly Solution for Special-Effects Garment Printing
By Ed Branigan November 2008 SPM
Water-Based Inks: An Eco-Friendly Solution for Special-Effects Garment Printing | ScreenWeb | screenweb.com

Water-Based Basics
(April 2003) Rick Davis
Water-Based Basics | ScreenWeb | screenweb.com

Water-Based Inks Health, Safety, and the Environment
Union Ink
Water-Based Inks

Water-Based Inks Joe Clarke

Joe Clarke Printwear
Water-Based Inks - Part 2 | Printwear


Discharge Ink Homework

Discharge Printing Step by Step
September 25, 2006 Impressions Staff
Discharge Printing Step by Step

Exploring the Secrets of Discharge Printing
Exploring the Secrets of Discharge Printing | ScreenWeb | screenweb.com
Terry W. Combs may 2001

Understanding Discharge Inks
Mike Ukena
Understanding Discharge Inks | ScreenWeb | screenweb.com

They've Come a Long Way
Ed Branigan
http://printwearmag.com/article/they%E2%80%99ve-come-long-way

Stuart Brent of Vacord writes a blog on discharge printing
Discharge Nation
Discharge Nation - discharge screen printing blog
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Last edited by RichardGreaves; April 13th, 2010 at 09:01 PM..
 
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Old April 13th, 2010 Apr 13, 2010 9:13:21 PM -   #9 (permalink)
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Default Re: Intro to water based printing?

Just want to say thanks for a wealth of info.
 
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Old April 14th, 2010 Apr 14, 2010 6:51:03 AM -   #10 (permalink)
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Default Re: Intro to water based printing?

YES! Thanks, everyone!
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Old April 14th, 2010 Apr 14, 2010 9:55:31 PM -   #11 (permalink)
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Default Re: Intro to water based printing?

Remember to back flood your screen between prints so ink does not dry in screen. Although most of the new WB inks on the market this will not be an issue except for some bases such as the Rutland quick cure base.

Use a dual cure emulsion and then an emulsion hardener.
 
Old April 14th, 2010 Apr 14, 2010 10:26:51 PM -   #12 (permalink)
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Default Hardener after effects

Quote:
Originally Posted by Neon Bible
Use a dual cure emulsion and then an emulsion hardener.
Hardeners are usually used to make permanent stencils.

Beware, don't use a hardener as a substitute for complete exposure or choosing a water resistant stencil. Depending on the chemical structure of the emulsion, an absolute water proof stencil may be achieved, but is no longer reclaimable.

A hardener should be a last resort or a treatment so you can get another 50,000 prints from your stencil.
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Last edited by RichardGreaves; April 14th, 2010 at 10:33 PM..
 
Old April 14th, 2010 Apr 14, 2010 10:56:05 PM -   #13 (permalink)
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Default Re: Hardener after effects

Quote:
Originally Posted by RichardGreaves
Hardeners are usually used to make permanent stencils.

Beware, don't use a hardener as a substitute for complete exposure or choosing a water resistant stencil. Depending on the chemical structure of the emulsion, an absolute water proof stencil may be achieved, but is no longer reclaimable.

A hardener should be a last resort or a treatment so you can get another 50,000 prints from your stencil.
We use hardeners when we have long print runs or if we will be reclaiming screens a few times. You can also post expose your screens to ensure they are not under exposed.
 
Old April 14th, 2010 Apr 14, 2010 11:13:10 PM -   #14 (permalink)
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Default Re: Hardener after effects

Quote:
Originally Posted by Neon Bible
We use hardeners when we have long print runs or if we will be reclaiming screens a few times.

You can also post expose your screens to ensure they are not under exposed.
What hardener do you use, with what emulsion that allows you to still reclaim?

For you, what is a long run?

How do you stop the un-reacted diazo, that isn't cross-linked, from dissolving with the unexposed image area?
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Old April 15th, 2010 Apr 15, 2010 9:06:47 AM -   #15 (permalink)
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Default Re: Hardener after effects

Quote:
Originally Posted by RichardGreaves
What hardener do you use, with what emulsion that allows you to still reclaim?

For you, what is a long run?

How do you stop the un-reacted diazo, that isn't cross-linked, from dissolving with the unexposed image area?
We use a chromaline UDC-2 Emulsion. Pro Chemicals HardenX.
We get a full exposure but some jobs we post expose to try to over expose. Maybe this is redundant since the emulsion is already developed.

Say we where printing a one color discharge print in the thousands on a manual press and may have to clean out the the screen and ink back up in the morning. We may use a hardener so our screens don't break down.

Any thoughts??
 






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