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Need to durably paint staples

Q. I have an application that requires a painted staple from a pnuematic stapler.

I have tried several brands of aersol paints that just chip off. I have also tried a colored matched Acylic enamel with a self etching primer undercoat that also did not work. Any Suggestions?

Tim Jeske
manufacturing - Thornton, Colorado, USA
2004

A. I did some research on a similar problem a few years ago using a small ball bearing 1/16" diameter a couple of washers and a impact tester set at 70 psi. You need a urethane primer with a very flexible topcoat. Only a few systems passed.

Ronald Zeeman
Coil coating - Brampton, ON, Canada
2004

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