1. What is Non-Stick coating ?

Non-stick coating is a non-metallic finish that is chemically bonded to the metal to create a hard, durable surface.
In physical bonding, the surface of the pan to be coated with PTFE (polytetrafluoroethylene) is roughened by sandblasting to create a larger surface area. Its shape gives the first coat, called a primer, some nooks and crannies to hold on to. Then PTFE particles are embedded in the primer, which forms a matrix for them. The coatings are cured at high temperatures. Particles of PTFE migrate to the surface and are shed, keeping anything else, like a fried egg, from sticking.

2. PTFE

Polytetrafluoroethylene or PTFE, is a fluorine-based compond that resists interacting chemically with anything else, and its hard, smooth surface is applied so it leaves no nooks and crannies to allow physical clinging to other surfaces. ``It doesn't stick to anything but it sticks to itself,''