Question

which plastic is used for making non stick cookware and why

Answer 1

A non-stick surface is a surface engineered to reduce the ability of other materials to stick to it. PTFE (Polytetrafluroethylene) is used as a non-stick coating for pans and other cookware. Best known brand for non- stick products is "Teflon".

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Answer 2

Material used in the making of Non-stick cookware is  Polytetrafluoroethylene