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topic 6941

Powder paint curing problems


#1. We have some complicated bent parts to be powder painted, we are facing problems of under coating in the not easily accessible areas. Ours is CORONA type gun.

#2. What should be the curing temperature for "textured finish" powder.

#3. We want to know the availability of low temperature curing powders ?

addendum Jan. +:

We are looking for a "Powder Paint with low curing temperature" to reduce power cost. We require a commercial quote globally.

Otis elevator co (ind) ltd. - Bangalore, India


First thing you should be using Tribo Guns not Corona.

The curing temp for texture finishes will vary from one powder to the next. I would try 400 to 425 F for 20 to 30 minutes.

Low temp cure powders are available from most if not all powder manufacturers.

Good Luck! Scott Jones
Advanced Finishing Systems - Winnipeg, Manitoba Canada


First of all, if you cannot use a tribomatic gun turn the kV down on your gun, alternatively you could try to pre-heat your substrate.

Curing temps for texture powder coatings vary from 160 deg. C x 10 mins to 220 deg. C, dependent on the system.

You can get powder coatings that are able to crosslink at 140 deg C x 12 mins. Alternatively you could assess the possibility of UV cured powder coatings. These powders are available from most major powder producers.

- Lincolnshire UK

Ed. note: Thanks, Drew. Full name next time please.

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