screen printing > Screen Making

Emulsion

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3Deep:
Most of you vets already know this, even though I,vie been in this biz for almost 11 years now I,m still learning things.  I was reintroduce to two part emulsion a few months back, reason I stop using it was because I was having a hard time exposing it on my homemade exposure unit so I bought the one part stuff and bang problem solved.  So even after I bought my professional unit I still used one part emulsion thinking the same thing, easy to use quick burn time , but it was hell on burning fine lines and halftones without really having it dial in.  so here come the two part emulsion again I burn a screen, same thing I got years ago washed out screen and emulsion running off.  I moved my exposure time  to 8 mintues and wow I,m now burning 4 color process screens at 50 to 55 lpi with very easy wash outs.  the right emulsion for the right job...so I,d like to who all use what emulsion to burn fine halftone screens, I like the 521 imagemate for fine and the pc 701 for spot color stuff ( thanks Homer for the tip on the 701)

Darryl

mk162:
I prefer to run 1 emulsion and that's it.  I've been running Image Technology ITX for a long time and love it, the only problem is discharge doesn't work really well.  I am trying out a couple new ones, but I usually end back with ITX.

Clark:
We used One-coat for standard spot for a couple years and then Ulano LX-680. But I've been getting beautiful screens out of the chromablue the last couple weeks, so may do away with the LX-680.

Homer:
honestly, I think it's more to do with your exposure unit and knowledge than the emulsion.

Frog:

--- Quote from: Homer on July 05, 2011, 12:43:08 PM ---honestly, I think it's more to do with your exposure unit and knowledge than the emulsion.

--- End quote ---

But the basic chemistry choices definitely offer different characteristics.

Pure Photopolymers are extremely long lived both on the shelf and on the screen, neat to use, generally fast, but not the best for extremely fine detail and halftones. For me, they work for 99% of my work, and though not cheap, my favorite is Chromatech PL, though, I am trying to warm up to Xenon Nova.

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