emulsions

[inkbrigade]

Kiwo One Coat with the diazo is another that will emmulate a dual cure but with higher solids and faster exposure, decent price.  Many here swear by Murakami Aquasol HV as well, another pp emulsion that can be used with diazo, solids is a bit low on it my opinion though.

Aquasol HV has 42% solids count.

[BorisB]

I'm right with you on not being organized enough or care to run 2 emulsions.

A few years ago I started playing around with sensitizing pure photopolymers.

You might try Nazdar's Purecoat (IMS905, Ulano product relabeled), we add Ulano Diazo C-10D and in this combination it will be very similar to RLX (I used RLX for like 10 years), but has 48% or so solids and exposes faster.  I get a great deal on it, but buy a lot from Nazdar. 

What do you gain by adding diazo to pure photopolymers? Water resistance?
How much do you add?  And you can buy it separataly without emulsion?

Boris

[squeegee]

I'm right with you on not being organized enough or care to run 2 emulsions.

A few years ago I started playing around with sensitizing pure photopolymers.

You might try Nazdar's Purecoat (IMS905, Ulano product relabeled), we add Ulano Diazo C-10D and in this combination it will be very similar to RLX (I used RLX for like 10 years), but has 48% or so solids and exposes faster.  I get a great deal on it, but buy a lot from Nazdar. 

What do you gain by adding diazo to pure photopolymers? Water resistance?
How much do you add?  And you can buy it separataly without emulsion?

Boris

Water resistance yes, but also exposure latitude, which to me translates to consistent detail every time.  Dual cures will give you great latitude and great detail as well, but they are slower to expose and I've never used one that could build up as thick a stencil in the same coating method as a pure photopolymer because dual cures are typically lower solids.  So for me it's the speed of the exposure and the quick buildup.  Also when needed I can make a very thick stencil with fewer coats.

I buy single serving gallon diazo bottles from Nazdar, Ulano C-10D and pour off each gallon from 5's (IMS905 Purecoat) and then add the diazo to a single gallon.  I buy the diazo seperately, Nazdar Pennsaken, NJ stocks the diazo.

[RICK STEFANICK]

with all the conditions calculated properly...hands down dual cures give better resolution...yes as tony said slower but the results are better. just my .02

[screenprintguy]

So out of everyone's experience, what emulsion would you recommend for printing water based and discharge. A product proven, to hold up to more than 200 passes. So far, I've tried a couple image mate products, Saati- Textile DW, Ryonet/CCI WBP hybrid emulsion, and so far best has been Chromaline CP-tex. After getting a sick deal on a 10,000 watt Richmond Screen Maker, our biggest issue is fixed from bad exposures. Now, just trying to find that good all around emulsion for W/B printing. The CP Tex exposes fairly fast for Diazo, but issues with the image area being tough to wash out. I can expose the same image using Chroma Blue PP and have an expose and wash out as you would normally expect. Exposing the CP-tex, the image area almost always ends up partially exposed. Same image, same exposure time, using either the Saati, or the CCI, image area washes out as normal, it just seems those don't hold up as well on press. Also the CP-tex has been very touchy with pot life. My first gallon turned into a 3/4 of a gallon booger within 3 weeks of mixing. Now I keep it in the a/c and that seems to help a little bit. I would really rather end up all at one emulsion to keep it as simple as possible. I read up on Ulano 925 I think as being the "liquid Steele" of emulsion. I appreciate the help guys!

Thanks

Mike

[ebscreen]

Are you post exposing and using a wipe on (non permanent) hardener?

CCI TexCoat holds up to thousands and thousands of discharge impressions with the above,
and without the addition of diazo.

I like it when the sun is out.

[screenprintguy]

I had started using harden x. Then after drying either putting back in the exposure unit for a bit or setting in the sun. I will see if I can try a little of the CCI that you mentioned. A one part would be awesome.

[tonypep]

I use the CCI 25WR, blockout w/leftover emulsion, post expose, and apply hardener X so far screens have held up to over 5K impressions w/discharge

[screenprintguy]

Thanks Tony

[IntegrityShirts]

Bringing this thread back because what I want to say isn't worthy of a new thread and isn't so much a complaint as is it a comparison of emulsions.

I currently 80% through my gallon of Chromablue which I'm trying and comparing to my usual Aquasol HV for the pure photo-polymer side of printing.  The Chromablue had a different odor than the aquasol, strangely stronger and sharper when first opened and stirred.  Went to coat screens today and opened it up, it's about half full, and the smell oh my god.  It brought me back to my college days when we'd pass out from a party and the keg would warm up to room temperature and then we'd try to ice it down a few days later and drink it lol.  THAT smell, skunky beer!  Anyone agree?

The other more noteable thing is something that Alan has mentioned before.  I use double sided sticky tape for my films on my reg unit and damned if the tape NEVER comes off the chromablue.  I never had an issue with Aquasol doing that but it actually is a pain in the ass because I have to cover it or it will pick up shirts and ruin registration.

Another thing I noticed was the consistency of the Chromablue was much runnier than the Aquasol.  I can layer the aquasol with the round edge on a 110 2 coats outside, flip&rotate, and 3 coats inside all day without fear of drips.  If I try that with the Chromablue I have to be extremely careful not to wait too long for the coat stroke or emulsion will seep through and actually drip when drying near the bottom.

[jasonl]

try kiwo discharge emulsion.  its blue, photo emulsion, cleans up fast and is good for plastisol or discharge and waterbase and is cheaper than Ulano Qtx that I have been using for 14 years and it $40 cheaper than chromaline blue.  Cleans up easy.  Nazdar will give you a free sample.

[Admiral]

I like the murakami sp-1400

prints all textile inks

great detail and lowest cost emulsion even

[IntegrityShirts]

try kiwo discharge emulsion.  its blue, photo emulsion, cleans up fast and is good for plastisol or discharge and waterbase and is cheaper than Ulano Qtx that I have been using for 14 years and it $40 cheaper than chromaline blue.  Cleans up easy.  Nazdar will give you a free sample.

I'd like to give it a try.  Where do you buy yours from? Nazdar's price is $68 which is $6 more than Aquasol HV.

[Homer]

I ordered a gallon of kiwo discharge based on Jay's love for it -so we'll give it a go. should be here today. I also tried the chromablue a while back, it did smell like donkey piss, so did Ulano QX-1 . I have about 15 different kinds of dual cure's in the shop right now. Also a few odd ball SBQ, Ulano Orange is actually pretty nice stuff too for a fast exposing emulsion, cheap too.. We tried chromaline 521 and had amazing results compared to our standard emulsion, Chromaline CT-R, it's an sbq, basically it's chromablue but red in color. or pink -whatever. I never used a dual cure until a month ago when we started to mess with discharge. . .I am looking for that one pot emulsion for WB, Discharge and plastisol. I am hoping the Kiwo is the ticket. BUt if we have to keep two emulsions on hand, I'm cool with that. . .just buy more screens!

[Admiral]

I ordered a gallon of kiwo discharge based on Jay's love for it -so we'll give it a go. should be here today. I also tried the chromablue a while back, it did smell like donkey piss, so did Ulano QX-1 . I have about 15 different kinds of dual cure's in the shop right now. Also a few odd ball SBQ, Ulano Orange is actually pretty nice stuff too for a fast exposing emulsion, cheap too.. We tried chromaline 521 and had amazing results compared to our standard emulsion, Chromaline CT-R, it's an sbq, basically it's chromablue but red in color. or pink -whatever. I never used a dual cure until a month ago when we started to mess with discharge. . .I am looking for that one pot emulsion for WB, Discharge and plastisol. I am hoping the Kiwo is the ticket. BUt if we have to keep two emulsions on hand, I'm cool with that. . .just buy more screens!

SP-1400 prints all WB, discharge, plastisol

$37 a gallon...

only thing about it is harder to reclaim since it's water resistant but if I can figure that out we might change to only that emulsion