Hi I'm new and have an emulsion situation
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What is the issue with the emulsion
Hi Chez,
My emulsion is an ulano QX-1 the issue is that after exposure when I wash out the emulsion I have to apply a lot of water pressure to clean the image and a bubble(like a very thin layer) start to appear. I have been exposure the emulsion from 12 minutes to 1 minute and I think less time is better.I think I'm over exposure it?
Sorry for my english I'm from Puerto Rico.
My emulsion is an ulano QX-1 the issue is that after exposure when I wash out the emulsion I have to apply a lot of water pressure to clean the image and a bubble(like a very thin layer) start to appear. I have been exposure the emulsion from 12 minutes to 1 minute and I think less time is better.I think I'm over exposure it?
Sorry for my english I'm from Puerto Rico.
Is that a pure photo polymer(no mixing diazo). If it is I run mine at 15 seconds for a 160 mesh. Are you using a vacuum table to expose
It is a Pre-Sensitized Dual-Cure Emulsion and my exposure unit have vacuum and like 15 black ligths of 20 w and my mesh is 110
Where is the "bubble" appearing?In the stencil area, or lots of bubbles on the exposed area?
Just in the stencil area
Did you degrease and/or dehaze the screen first?
Sounds like an unusual occurance for emulsion to "blow a bubble".
If it's emulsion, then to have some left to blow a bubble sort of sounds like exposure issues.
We had a gallon get exposed inadvertantly to HID lights and it did all kinds of weird things till we figured out it had been left out. It was qtx.
I'd clean the screens, dehaze/degrease and try a different container of emulsion to see if it's the emulsion. I would also expose the devil out of it to make sure it was definately not underexposed.
Sounds like an unusual occurance for emulsion to "blow a bubble".
If it's emulsion, then to have some left to blow a bubble sort of sounds like exposure issues.
We had a gallon get exposed inadvertantly to HID lights and it did all kinds of weird things till we figured out it had been left out. It was qtx.
I'd clean the screens, dehaze/degrease and try a different container of emulsion to see if it's the emulsion. I would also expose the devil out of it to make sure it was definately not underexposed.
1 - 8 of 8 Posts
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