discharge washing problem

[noortrd]

We use cci discharge white  on black fabric. After dryer the print cracks and turns to powder. What we did wrong?

[Colin]

Are you sure it is properly cured?

Maybe it is dry, but not cured? 

Are you having any other "cure" issues with water base inks from that dryer during the same run period?

Have you printed with the same ink through a different dryer and had the same results?

[ebscreen]

What's it look like on the inside?

[noortrd]

water based dry fine. Its a gas dryer 7 ft chamber 200 temprature.

[JBLUE]

Put away the 110 and run it on a 180..... Sorry. Just in a smart ass kind of mood today..........

[screenprintguy]

7 foot chamber, but how long are you leaving it in there? should be in the heat no less than 2.5 minutes, and temp on ink should be around 320 minimum. JBlue is right, go with a higher mesh count, 156-180 and you won't leave a huge globby deposit. Maybe add some penatrant to dig deep in the fabric. Don't try to achieve a bright opaque white look on press, that's way too much, you will have your opacity at the end of the fabric's discharge. Give that a whirl. Just remember, the more ink you cake on there, the longer it has to be in the oven.

[noortrd]

May be i buy new dryer.

[screenprintguy]

just make sure this is printing you want to focus on mainly. that's a big investment if you end up stopping the discharge printing. really 12 feet of heat is around the minimum. Our dryer is 8.5 feet of gas heat and we slow it down to almost 1 to get the proper cure. Slows production down big time, but at least we know when the shirts go out, they won't be coming back.

[Doug S]

just make sure this is printing you want to focus on mainly. that's a big investment if you end up stopping the discharge printing. really 12 feet of heat is around the minimum. Our dryer is 8.5 feet of gas heat and we slow it down to almost 1 to get the proper cure. Slows production down big time, but at least we know when the shirts go out, they won't be coming back.

When you slow it down to 1 what do you have your temp at?  Mine is 8ft of heat and I slow it to 3 or 4 and set the temp at 350 but I'm worried that temp may be to hot. 

[screenprintguy]

we set the heatwave to 340. If they are heather shirts, which we get a lot of folks wanting those discharged because of the cool outcome, then 320

[jvanick]

CCI Discharge White on Antique Royal Blue rocks...  Especially if there's fine detail, and not a lot of huge open areas... our customers LOVE that look.

[Doug S]

I was worried that 350 would dry them too fast and stop the discharge from working.  We've had success at everything except red shirts.  I think I've finally given up on them.  We've tried the fixer n as well as adding more base but regardless the prints still eventually turn pinkish.