APC researched a variety of different coatings until we located one with the correct properties. We discovered that TEFLON®-FEP would provide the most efficient surface qualities, and because it could be cured at low temperatures there was no threat of distortion to the clamp metal. This material not only answered the problem, but also provided a slight cushioning effect that further protected the delicate wafers from compression damage during lamination. Most important, APC was able to supply the coated clamp on a just-in-time basis.
Mandrels being grit-blasted with
aluminum oxide to prepare surface
for fusing of the coating. Certain
metals are coated with a phosphate
solution to obtain superior powder adhesion.
