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-----Putting plastisol on zinc plated parts
Q. My question is, what is the procedure for curing plastisol on zinc plated & chromate/passivated parts? My concern is heat during curing destroying the chromate.
For example where plastisol is used on handles for tools or levers on latches, etc.
joshua gonsalvessmall business - port of spain
December 27, 2024
A. Hi Joshua
Zinc phosphatization or zinc plating plus zinc phosphating is probably a better base for plastisol than zinc plating plus chromating, but I can see that this may not be practical for the case at hand.
A primer is required before plastisol in any case.
I think zinc plating plus chromating, with a 24 hour cure time, followed by priming followed by plastisol and baking should work okay. There are "air dry" plastisols but they probably are not quite as good as oven-cured versions.
Luck & Regards,
Ted Mooney, P.E. RET
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