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Forced (heat) curing, small batches.

6/26/17       
Matt

Good afternoon folks,

I'm curious, we are at a point where some heat forced curing (conversion varnish) would be helpful in between coats. We do NOT like to spray large batches, we find it otehrwise more efficient to spray our stuff in smaller batches. Lots of reasons why, won't go too far into that on the finish forum.

Anyhow, I was curious if anyone else is using any sort of forced curing room/booth, such as the infrared booths. I've often thought that a single 10X10 or even a 5X10 (8' tall) would benefit us by reducing the cure time.

Back story...... we are in a VERY humid part of the Southeast. It even slows down conversion varnish enough that making small batches can be difficult, due to curing time. We are NOT worried about the final curing temperature. Our shop is almost always over 70F for proper crosslinking, and it's easy to let them cure overnight before stacking/assembling.

We spray a total of 3 coats of conversion varnish, on all whites and clears.

Anyone using a smaller heat/infrared booth for faster curing between coats, to good effect?

6/27/17       #2: Forced (heat) curing, small batches ...
Shane

We are in the southeast and have a fairly large curing oven made by Global.. it's probably about 20' wide by 24' long and 18' high on the inside dimensions... it's actually a powder coat booth that we changed out the burner box for a much smaller unit so we can regulate temps down to 110F... our temp range we cure things are between 110-140 F... depending on how long things have flashed..The key is lots of air movement... Our finish area is very large so it is in part of the shop that we can roll racks in and out with ease.... it also has doors on both sides.... parts in one door and out the other.... It's great for getting things nice and cured up for sanding between coats and to be able to give the products a full cure before packaging/shipping

6/27/17       #3: Forced (heat) curing, small batches ...
Bob Niemeyer  Member

Website: niemeyerrestoration.com

These are the guys to call. Prime Heat Systems.
I have consulted in many factories that have Prime Heat batch ovens and they all work very well. They are not cheap, but they work. They will test your coating for the temp and time needed to cure.

Prime Heat Systems

8/2/17       #4: Forced (heat) curing, small batches ...
Les Member

We recently installed a PrimeHeat batch tunnel and it is curing our products in about 12 minutes. We are spraying both solvent pre-cat and waterborne material. We are in the north country and it gets very hot and sticky summers and very cold winters. So far the system in the summer has been great. Very helpful company.


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