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Screens not exposing!!

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Old April 30th, 2012, 09:47 PM   #1 (permalink)
varsityink varsityink is offline
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Default Screens not exposing!!

So all of a sudden now that we are in our new shop and using auto presses, we have switched emulsion to fastlink. Great product, however we are getting some screens that washout fine and some that wont hardly at all. Right now ive got a one color job thats breaking down on 100 shirts! Wth?
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Old May 1st, 2012, 01:21 PM   #2 (permalink)
Icon_714 Icon_714 is offline
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Default Re: Screens not exposing!!

Are you mixing in the diazo?
What kind of exposure unit do you have? age?
Where/how are you storing your screens when drying?
Are you using plastisol on the jobs that break down the screen?
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Old May 1st, 2012, 01:41 PM   #3 (permalink)
srimonogramming srimonogramming is offline
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Default Re: Screens not exposing!!

What is fastlink? Who makes it? If the screen is breaking down it is either underexposed or the wrong chemistry for the ink. If the screen is one of those that is almost impossible to spray out then they are being pre-exposed to UV light somewhere. So you've changed locations and emulsion right? Is there anything else that you've changed or that is different from when you were having no problems?
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Old May 3rd, 2012, 02:56 AM   #4 (permalink)
ai_file ai_file is offline
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Default Re: Screens not exposing!!

squeegee pressure?
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Old May 3rd, 2012, 03:39 AM   #5 (permalink)
type1teez type1teez is offline
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Default Re: Screens not exposing!!

I think this is a product offered by Screen Process Of Alabama. I had a hard time with it also. But they sell a bunch of it. The bottom line was I needed something a little more forgiving. I'm not trying to set any speed records burning screens but for larger shops it can be a real time saver if you can shoot screens in under a minute. But give those guys a call at SPA they are good folks and could point in the right direction. They might get you in touch with someone using it with the same equipment that could help. The good news is you can always go back to what you were doing before. ( that stuff is way sensitive to any UV light, you can over or under exspose real fast. best of luck.)
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Old May 3rd, 2012, 08:38 AM   #6 (permalink)
inkman996 inkman996 is offline
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Default Re: Screens not exposing!!

Quote:
Originally Posted by ai_file View Post
squeegee pressure?
What does squeegee pressure have to do with developing the screen?
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Old May 3rd, 2012, 09:04 PM   #7 (permalink)
varsityink varsityink is offline
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Default Re: Screens not exposing!!

I dont know what the problem is or was. The guys haven't complained about it the past 2 days.been using a better exposure unit. Maybe that was it? I was using one with purple uv bulbs and the one we're using now looks like a halogen. Idk its a brown single point exposure unit
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Old May 3rd, 2012, 11:05 PM   #8 (permalink)
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Default Re: Screens not exposing!!

Bulb might have gone bad it sounds like then.

Another possible issue is emulsion was sensitized too long ago and stopped working properly.
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