I have been using Ryonet emulsions for all my t-shirt printings. I just come back from the Vietnam trip where I found some kind of emulsion they sell that use some kind of blue thick liquid and some orange powder, after mixing together, the color will become green. It doesn't have name or anything on the emulsion box, so I wonder what kind of emulsion it is and does it work good? Please share if you know about it, thanks.
What kind of emulsion?
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Almost every screen supplier sells diazo emulsions. The orange powder is the photosensitive part. It only has a shelf life of about 2 weeks after mixing, a little longer if kept refrigerated. The short shelf life is why I use photopolymer emulsions that can last up to a year. God Bless.
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2 whole Weeks? I beg to differ....I've had some 4 months old after mixing and still worked fine. I have some in a container that I mixed in November last year....just for grins I'll use it over this weekend and post back results either way.
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Understood, I'll read the label again myself....just seemed 2 weeks was an awful short lifespan! Just like anything else I guess, sell by date on eggs is today but if cared/stored for properly still good up to 3 weeks....that kind of thing. In the mean time the emulsion I use is from Ryonet, it's the ProChem DXP dual cure diazo pink emulsion.
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I know...a month late and a dollar short, quick update on my last post, just coated some screens this past weekend and burned a couple today. The one with just a 1 - 1 coat started to peel but I realized the transparency wasn't totally oblique. doubled the transparencies and burned on a 1 - 2 coated 110 screen for 12.5 minutes and came out perfect....again ....I mixed this batch up around last Christmas and still working. Any thoughts? I imagine most shops don't have emulsion sitting around this long but thought the shelf life on this product interesting.
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BUMP....
Just thought I'd share.....been keeping this batch of emulsion for testing out of curiosity.....decided to do a freebie job for a friend and used this batch for it. I purchased this emulsion a year ago this month (see my first thread). I coated the screen about a month ago. Here is the result from burning it this morning. It's still wet from washing out. Exposure was for 12.5 minutes. I will print this afternoon and see how it holds up.
R/
Larry
Just thought I'd share.....been keeping this batch of emulsion for testing out of curiosity.....decided to do a freebie job for a friend and used this batch for it. I purchased this emulsion a year ago this month (see my first thread). I coated the screen about a month ago. Here is the result from burning it this morning. It's still wet from washing out. Exposure was for 12.5 minutes. I will print this afternoon and see how it holds up.
R/
Larry
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Jana & Wade, Can you elaborate? how does it "Rock"? always good to hear other advice and possible alternatives!
It rocks because it is easy to work with. Open it up, pour it into your scoopcoater, coat your screen and let it dry. No mixing like a diazo. Our exposure unit is a blacklight system so the exposure times won't be as fast as a metal halide system but it is pretty fast. I burn my 305's in 36 sec. My 156's take longer. Shelf life is up to 18mos if it is kept refrigerated. 5 min in the dip tank and I am knocking the emulsion off the screens. I love the stuff.
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I started using Murakami PhotoCure BLU. I love it. I get a much nicer stencil from it. It cleans up a lot easier with screen wash which is nice if you have to change colors or want to store the screen. I also find that it reclaims a lot easier, as well. Holds great detail. I did my first simulated process job with this emulsion and I used a UV exposure unit and every screen held about 98% of the halftones. The great part about this emulsion if that you can add a Murakami screen hardener to it and then it can be used with water based and discharge inks. All around great emulsion.
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