Author Topic: discharge emulsion question  (Read 369 times)

Offline balloonguy

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discharge emulsion question
« on: January 10, 2019, 10:42:33 AM »
do all emulsions for discharge diazo activated? Does anyone make a cap film that can be used for discharge/water base? I get a call for it 3 - 4 times a year. I don't want to buy a gallon every time. This one is very short run. It is 36 pieces.
Thanks.
When you dig grave will you make it shallow so that I can feel the rain?


Offline Maff

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Re: discharge emulsion question
« Reply #1 on: January 10, 2019, 11:01:19 AM »
There are photopolymer emulsions rated for discharge and waterbase that can be Post Exposed and will hold up fine especially for short runs.
You could also try using a reclaimable hardener spray. 
For a 36 piece run you may be able to just run the emulsion you have with a hardener or post expose it if it's a photopolymer.

Offline Orion

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Re: discharge emulsion question
« Reply #2 on: January 10, 2019, 01:46:05 PM »
Take a look at KIWO MultiTex.
Dale Hoyal
Screenprint Production Manager

Offline kirkwad

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Re: discharge emulsion question
« Reply #3 on: January 10, 2019, 02:05:54 PM »
Take a look at KIWO MultiTex.

Yeah, KIWO MultiTex works good. Also Saati PHU 2 works good as well. You could always just buy a quart of emulsion & bust it out when needed. Most photopolymer emulsions have a good shelf life.

Offline balloonguy

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Re: discharge emulsion question
« Reply #4 on: January 10, 2019, 06:38:56 PM »
Thanks. I will try the saati. I can get it very easily. It is such a small run I just want it to be easy.
When you dig grave will you make it shallow so that I can feel the rain?

Offline kirkwad

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Re: discharge emulsion question
« Reply #5 on: January 11, 2019, 08:28:17 AM »
Be sure to post expose your screens for optimal resistance.

Offline screenxpress

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Re: discharge emulsion question
« Reply #6 on: January 11, 2019, 11:43:10 AM »
I would not discount quarts of Green Galaxy CryoCoat Emulsion which is marketed as good for discharge, plastisol, and waterbase without the need of a hardener.   

I have used it on low production discharge runs and I don't like to buy a two part emulsion that has a short life after mixing.  I use it for both discharge and plastisol.  It's very cost effective.   

And our Danny Gruninger has posted his testimonial (paid? lol) of the product with various test exposure results
https://www.screenprinting.com/products/green-galaxy-cryocoat-emulsion
« Last Edit: January 11, 2019, 11:58:41 AM by screenxpress »
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Offline tonypep

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Re: discharge emulsion question
« Reply #7 on: January 11, 2019, 11:55:43 AM »
A reminder....don't forget the exposure unit as a variable. Flourescent, halide, and LED units may often yield different results.

Offline balloonguy

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Re: discharge emulsion question
« Reply #8 on: January 11, 2019, 01:42:20 PM »
Thanks for the info. I normally leave my screens in the FL sun to dry. Will that work for post expose or should they go back in the exposure unit?
When you dig grave will you make it shallow so that I can feel the rain?

Offline tonypep

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Re: discharge emulsion question
« Reply #9 on: January 11, 2019, 01:58:01 PM »
Depends on the weather! Either way post exposing and hardening is just good insurance.

Offline Rockers

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Re: discharge emulsion question
« Reply #10 on: January 11, 2019, 11:53:53 PM »
Chromaline ChromaTech DEX will work in that case. It`s an SBQ emulsion.