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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Powder coat and silicone or PVC Plastisol adhesive

2007

We are considering "gluing" nomex to steel racks used to cure and transport aluminum extrusions. We are in the process of installing a powder coat line to coat extrusions in house. I have experienced the problems caused by silicone on powder paint. My question is we need to find an adhesive that will with stand the aging process of 400 degrees F for 6 hours and not deteriorate. I read where PVC -plastisol adhesives will work and are not silicone so they will not cause the fish eye problem that silicone does. I am concerned about having silicone in the plant.

Second question is if I cure the silicone for 24 hrs and then heat cure (age) it prior to using the racks for the extrusion, will this eliminate the possibility of the silicone - powder defect issue?

Can anyone tell me of a brand or type of PVC plastisol adhesive that will meet my requirements?

Steve Peterson
- Elkhart, IN, USA

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