What's the reason for the PTFE and Kynar- PVDF are such high priced plastics

Within the last year, the business has had more challenges than I have seen in my three decades experience. In the past I have seen sharp price increases, and I have experienced several shortages, and delivery issues as a consequence of resin allocations by resin companies. This is the very first occasion I have seen all these issues at the same time.

PTFE (TFE) and PVDF both are on allocation.

This pair of resins are in short supply. The  PTFE Sheeting product PTFE (TFE) as well as Kynar-PVDF  manufacturing requires a mineral called Fluorspar that's mined in Mongolia and China. The worldwide interest in this mineral has grown significantly, as well as supply has tightened. PTFE materials have high temperature resistance, excellent chemical resistance and extremely low co-efficient of friction (slick) and is utilized throughout a lot of purposes from non-stick fry pans to ptfe tape for personal use. This mineral is actually a essential raw materials inside the production of fluoropolymers, fluorolubricants and several refrigerants.This rise in demand linked with general shortage of raw materials is responsible for a dramatic price increase (almost double in the last year), shortages, and we expect these two factors to keep at it in the near future.

Dupont Delrin Rod