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screen printing => Screen Making => Topic started by: Rockers on August 12, 2015, 01:46:38 AM

Title: ChromaTech WR anyone
Post by: Rockers on August 12, 2015, 01:46:38 AM
Any of you guys using this new Chromaline emulsion? Would love to hear more about it.
Title: Re: ChromaTech WR anyone
Post by: Maff on August 12, 2015, 11:52:51 AM
We have been using it for a few months now. We've done one order which was 400 shirts 2 color discharge front and back and the screens held up fine.  A bunch other smaller orders with waterbase and discharge with no problem.  I haven't completely dialed in our exposure times with it yet but we've done a few 4CP orders and a few Sim Process orders and the halftones exposed fine.  We are a Manual print shop, so we are not exactly at the highest end of precision and volume ;)... but it's been working well for us.
Title: Re: ChromaTech WR anyone
Post by: noortrd on August 12, 2015, 02:25:01 PM
Its diazo base?
Title: Re: ChromaTech WR anyone
Post by: KevWilso on August 12, 2015, 03:18:45 PM
It is a single part ready to use emulsion.  Fast exposure works pretty well.
Title: Re: ChromaTech WR anyone
Post by: Maff on August 13, 2015, 10:03:47 AM
It is a single part ready to use emulsion.  Fast exposure works pretty well.

Right, water resistant photopolymer emulsion. I was skeptical at first, but so far so good.  I'm curious if any big shops are using it with really high quantity discharge/waterbase runs...
Title: Re: ChromaTech WR anyone
Post by: noortrd on August 13, 2015, 10:58:12 AM
price?
Title: Re: ChromaTech WR anyone
Post by: KevWilso on August 13, 2015, 11:49:12 AM
We have it at $64.00; or $60.00 each if you do a 4 gallon case.  Free shipping on order of $100.00 or more.

Title: Re: ChromaTech WR anyone
Post by: Rockers on September 10, 2015, 01:31:29 AM
We have been using it for a few months now. We've done one order which was 400 shirts 2 color discharge front and back and the screens held up fine.  A bunch other smaller orders with waterbase and discharge with no problem.  I haven't completely dialed in our exposure times with it yet but we've done a few 4CP orders and a few Sim Process orders and the halftones exposed fine.  We are a Manual print shop, so we are not exactly at the highest end of precision and volume ;)... but it's been working well for us.
Would you mind giving me an idea about exposure times please.
Chromaline were so forthcoming not to include any guidlines on the Mfd.
Title: Re: ChromaTech WR anyone
Post by: Frog on September 10, 2015, 10:25:32 AM
We have been using it for a few months now. We've done one order which was 400 shirts 2 color discharge front and back and the screens held up fine.  A bunch other smaller orders with waterbase and discharge with no problem.  I haven't completely dialed in our exposure times with it yet but we've done a few 4CP orders and a few Sim Process orders and the halftones exposed fine.  We are a Manual print shop, so we are not exactly at the highest end of precision and volume ;)... but it's been working well for us.
Would you mind giving me an idea about exposure times please.
Chromaline were so forthcoming not to include any guidlines on the Mfd.

I did find it interesting that Chromaline didn't include any exposure guidelines at all on this product's user guide (as they do on PL-2 and others) However, as is (or should be) SOP with any new emulsion, sacrifice a screen and do a step wedge type test encompassing times half and twice as long as you'd use with a similar product.
Title: Re: ChromaTech WR anyone
Post by: bimmridder on September 10, 2015, 10:48:58 AM
Is Step Wedge Man making an appearance?
Title: Re: ChromaTech WR anyone
Post by: Frog on September 10, 2015, 11:19:45 AM
Is Step Wedge Man making an appearance?

He's warming up in the bullpen, but may not be needed.
Title: Re: ChromaTech WR anyone
Post by: Maff on September 10, 2015, 02:50:47 PM
About 40 Seconds for 110T.  I have a 850W MH Nuarc exposure unit.  I coat 1/1 round side.  I changed my bulb a few weeks ago and haven't yet dialed in the higher mesh.
Title: Re: ChromaTech WR anyone
Post by: Rockers on September 10, 2015, 06:28:45 PM
About 40 Seconds for 110T.  I have a 850W MH Nuarc exposure unit.  I coat 1/1 round side.  I changed my bulb a few weeks ago and haven't yet dialed in the higher mesh.
Thanks a lot man. I`ve to say though that this emulsion is pretty tacky.
Title: Re: ChromaTech WR anyone
Post by: Frog on September 10, 2015, 07:08:52 PM
About 40 Seconds for 110T.  I have a 850W MH Nuarc exposure unit.  I coat 1/1 round side.  I changed my bulb a few weeks ago and haven't yet dialed in the higher mesh.
Thanks a lot man. I`ve to say though that this emulsion is pretty tacky.

That's what the wife often says about me.
Title: Re: ChromaTech WR anyone
Post by: Maff on September 10, 2015, 11:45:08 PM
About 40 Seconds for 110T.  I have a 850W MH Nuarc exposure unit.  I coat 1/1 round side.  I changed my bulb a few weeks ago and haven't yet dialed in the higher mesh.
Thanks a lot man. I`ve to say though that this emulsion is pretty tacky.
Yeah definitely a bit tackier than our last emulsion... but so far it's working out.
Title: Re: ChromaTech WR anyone
Post by: Larry Tywater on September 11, 2015, 10:26:00 AM
Chromaline does not publish exposure times for individual emulsions on our data sheets because is there are too many variables to have it make a real impact. Yes we could tell you what it does in our lab and the exact amount of light units that it takes on our equipment at a specific EOM on a specific screen mesh. To the general screen printer that number would make no difference at all and they would still be left guessing. The best advice that I could ever give when trying a new emulsion is, if you already have an established exposure time for the specific family of emulsions (Photopolymer, Dual Cure, Diazo) then do a step wedge test around the time of the comparable emulsion. You should already be in the ballpark and all you need to do is fine tune it. By doing this one test you will be closer to the actual proper exposure than you ever would be by going off of a time on a data sheet that was done in a lab under perfect conditions. My last bit of advice is, There is no substitute for an initial proper exposure!
Title: Re: ChromaTech WR anyone
Post by: Frog on September 11, 2015, 10:44:24 AM
Chromaline does not publish exposure times for individual emulsions on our data sheets because is there are too many variables to have it make a real impact. Yes we could tell you what it does in our lab and the exact amount of light units that it takes on our equipment at a specific EOM on a specific screen mesh. To the general screen printer that number would make no difference at all and they would still be left guessing. The best advice that I could ever give when trying a new emulsion is, if you already have an established exposure time for the specific family of emulsions (Photopolymer, Dual Cure, Diazo) then do a step wedge test around the time of the comparable emulsion. You should already be in the ballpark and all you need to do is fine tune it. By doing this one test you will be closer to the actual proper exposure than you ever would be by going off of a time on a data sheet that was done in a lab under perfect conditions. My last bit of advice is, There is no substitute for an initial proper exposure!

Actually, many of the Chromaline emulsion user guides do list suggested times, and though my close relationship with Step Wedge Man over the years certainly has me heartily agreeing with each user testing for themselves, I have found the manufacturer-suggested times useful for rough comparisons, and to establish starting numbers for tests.
Title: Re: ChromaTech WR anyone
Post by: Rockers on September 12, 2015, 04:17:08 AM
Chromaline does not publish exposure times for individual emulsions on our data sheets because is there are too many variables to have it make a real impact. Yes we could tell you what it does in our lab and the exact amount of light units that it takes on our equipment at a specific EOM on a specific screen mesh. To the general screen printer that number would make no difference at all and they would still be left guessing. The best advice that I could ever give when trying a new emulsion is, if you already have an established exposure time for the specific family of emulsions (Photopolymer, Dual Cure, Diazo) then do a step wedge test around the time of the comparable emulsion. You should already be in the ballpark and all you need to do is fine tune it. By doing this one test you will be closer to the actual proper exposure than you ever would be by going off of a time on a data sheet that was done in a lab under perfect conditions. My last bit of advice is, There is no substitute for an initial proper exposure!

Actually, many of the Chromaline emulsion user guides do list suggested times, and though my close relationship with Step Wedge Man over the years certainly has me heartily agreeing with each user testing for themselves, I have found the manufacturer-suggested times useful for rough comparisons, and to establish starting numbers for tests.
I couldn`t have said it better myself. As a matter of fact this is the only Chromaline data sheet that got no times listed at all. But please correct me if I`m wrong.