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screen printing => Waterbase and Discharge => Topic started by: Binkspot on October 19, 2012, 06:25:11 PM
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Thanks for all the pointers and tips using WB and Discharge. We ran a two color left chest earlier this week with D-White and PMS 102 on black, came out better then imagined. Today we got a little more daring and ran D-White font and under base topped with red plastisol on 112 Comfort Color tee's. Again could not be happier with the results.
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could not get the image to open up (I think it is too big), but from what I see it looks KICK A@#!!!
pierre
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It enlarges for me just fine.
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Great looking print. Did you wash test the print? I have not seen it but people are saying if you use d- white straight as an underbase for plastisol. You will have cracking on the plastisol.
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Washed twice then gave it to the dog. Still looked good. Heard the same thing and was neverous as hell when it came out of the washer and dryer.
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Did you thin or base down the red?
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No actually a thin red to begin with, Miami ink mix going through a 355 one light stroke, all half tones. You can't even feel the ink after the shirt was washed. I would assume because its all "dots" of ink and not one large layer of ink it should remain flexable.
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First off thanks for sharing the info. This gives me some hope. I do a ton of white and another color on dark shirts. I want to do DC underbase but on small orders I don't want to have to do 3 screens. If I can do D-white and then top it and have it be the white print then that will save me a ton of time and screens over a year.
I have to know what dryer do you have? If its really big and a ton of heat that maybe why it worked???
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Speaking of dryers and not trying to derail this thread BUT...
I have a Chaparral 12' (4' heat, 3 12" wide panels)... it has "air" but they are just air knives that go before and after each panel (so 4 air knives total) it also has an "air heater" not sure how effective it is... but anyway. I currently run it about 4.5" from belt and at about 8' per minute and the panel's internal temp set to 880 degrees. To hit 380-390 degrees on the shirt as it comes out from the last panel. I get a good cure and no scorching at this settings. But that is plastisol.
What changes should I be making to start with to switch to discharge/WB? I know electric is way less than ideal but we print so slowly that we barely have two garments on the belt at a time now... we we have PLENTY of belt left for slowing things down.
I'm figure I need to turn the belt down a LOT (under 4' per minute?) which means I'd need to turn the temp down as well... what would be a good starting point for these two settings? Should I change the height of the panels as well?
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Please don't laugh but they went through our Vastex EC 54" with the scrub air on, 3' chamber. It was sloooooooooooow, it took a little less then an hour to do the job. When they came out there was still a faint smell of the discharge so they went through a second time. Yes I am looking for another larger dryer to be a little more efficient. We ran the white/yellow job earlier this week through our Max Cure, 5' of heat. For that one we just slowed the belt speed down a little.
We have the same issue with most customers wanting light colors on dark shirts, surprised how many people want black for summer events. We do a quarterly order of a six color+UB on black shirts. No mater what we tried the end result feels like a rain coat. This is what pushed us to start testing the Discharge and WB. We are redoing the art work now and hope to run that job all WB.