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screen printing => Screen Making => Topic started by: noortrd on February 03, 2015, 08:14:47 AM

Title: old emulsion
Post by: noortrd on February 03, 2015, 08:14:47 AM

We have 7 and 8 month old cci pfxhv emulsion left. Its little thick. Is there anyway to thin and use. Is there any expiry. Any comments will
be very helpfull to us.

Title: Re: old emulsion
Post by: Frog on February 03, 2015, 09:11:57 AM

I would try adding a little water to just enough to test a screen.

CCI lists a shelf life of 30 days on coated screens.
Many of us have found these figures on similar photopolymer emulsions to be very conservative. Most brands list one year on sealed SBQ and CCI says "unopened", but once again, stored in good conditions, this can be fudged.

You, however, have apparently discovered one possible result of prolonged storage