Where did it all begin?

Nonstick coatings hit the selling floors in the early 1960s.

The first nonsticks were made primarily of polytetrafluoroethylene (PTFE). PTFE has the lowest coefficient of friction (CoF) of any known solid. In other words, the majority of materials (in this case foodstuffs) do not stick to it.

PTFE's low CoF "releases" the materials, making it easy to separate them from the coating. Therefore, on nonstick pans, most substances are easily removed from the surface.

Unfortunately, PTFE is also very soft and, if unprotected, wears quickly. While early nonsticks had good release, they were soft and wore out after little use. The result: nonstick-coated cookware earned the reputation of being "disposable".
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The Curing Process

Substrate Temperature

This is the most important aspect of the cure, since the substrate actually "cooks" the coating in much the way a frying pan cooks an egg. It's important to remember that the time required to reach peak metal temperature will vary, depending on the kind of substrate and its mass. An extended high-temperature cure may be necessary to sinter or melt/flow the fluoropolymer components in a coating system. The use of pyrometers or thermocouples can be used to monitor both oven and substrate temperatures.


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