I had an adhesion problem today with Krylon peeling up at the edges while weeding. In the past I have scuffed the vinyl prior to cutting. Then cleaning with 3812s Dupont reducer. I never had any problems before, even when spraying the Krylon through my Paasche for a finer blend. So today I experimented with other products. After scuffing and cutting, I cleaned with Dupont 2319 plastic prep, then sprayed a fine coat of 2322 adhesion promoter with my airbrush. After color coating with Krylon through the airbrush there was no problem with peeling. I know vinyl inks are an alternative and will try them soon, but I thought I'd pass on this information in case others here have had similar problems with Krylon lately. Do you think the formula has been changed? (bahumbug34)
Posted by aaronssigns (Member # 490) on :
yes krylon will do that to your vinyl it also makes it soft and rubbery, try not to apply to heavy of a coat of paint and then let it totaly dry and then lightly press the vinyl back down to the backing paper and then you can tranfertape and apply to your sign surface and then you will have no more problem once it has been applyed. its the solvents in the krylon that reacts with the vinyl and makes for a good bond there are other products and paints and inks out there that will also work but krylon is easy, fast, cheap and it works!
Posted by aaronssigns (Member # 490) on :
yes krylon will do that to your vinyl it also makes it soft and rubbery, try not to apply to heavy of a coat of paint and then let it totaly dry and then lightly press the vinyl back down to the backing paper and then you can tranfertape and apply to your sign surface and then you will have no more problem once it has been applyed. its the solvents in the krylon that reacts with the vinyl and makes for a good bond there are other products and paints and inks out there that will also work but krylon is easy, fast, cheap and it works!
Posted by roger bailey (Member # 556) on :
Yes Krylon has changed they're formula (dosn't that always happen ?)I have yet to use the "new an improved" version.
As for preping vinyl, try our Rapid Prep, lots of body shops are now using it (especially for plastic) it cleans better then the old 40 or 50 year old solvent formulas ! I used to use 3812 in the late 60's for prep wash on cars, it was nasty stuff (flammable/health haz.) and really didn't get ALL the wax & silicone off.
When using bodyshop solvents, some people have been burned by flames from static charges in plastic parts lighting the solvents !
e-mail for free samples; mail@rapidtac.com
Roger Posted by John Deaton III (Member # 925) on :
I dont do alot of fades on vinyl, but when I do, I spray on the color, wait a few minutes and spray on a thin coat of clear. Ive never had a problem with it coming off after doing this. I use frog juice clear now but have used krylons clear.
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