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topic 1255

Powder coating on plastic or composite material.


(1998)

Q. We would like to replace an aluminum, powder coated part with a polymer or composite material that can be powder coated. Any suggestions?

Brian M [last name deleted for privacy by Editor]


(1997)

A. A product that would meet your requirements is SMC [sheet molding compound].

I hope this helps.

Bill Humphrey


(1997)

A. Yes,

I think SMC might also work, but when you say SMC.....does the SMC have a liquid "Conductive Primer" prior to the powder coat? I would also like to know if plastic parts are paintable via Powder-Coat. My response about using a conductive primer like an in-mold coating is theoretical and un-tested.

Bill Taylor


(1998)

A. Dear Brian,

There is currently some successfully tested and proven methods of applying thermosetting powder coatings to certain plastics.

E.g., for ski bindings, handles for pots and pans. Usually the best results have been with Vinyls and Phenolic type materials.

Various products such as Staticfluid and/or waterbased primers are available for dip or spray application prior to powder painting.

Thomas F. Gratz
St. Charles, Illinois


(1998)

Q. Can anybody help I am trying to plastic coat some fishing creels I have made an oven to heat the creels but I can't get the plastic powder in the dip tank to fluidize very well.

Thank's

C.J. S [last name deleted for privacy by Editor]
- England


A. Hi C.J. A fluidized bed requires a properly designed air stream to fluidize the material, making it into quicksand. User's Guide to Powder Coating [link is to info about the book on Amazon] by Nicholas Liberto should prove helpful. Good luck.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



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