Foils made of FEP (fluoroethylene propylene) and PTFE (polytetrafluoroethylene) are thin-walled, flexible materials that are used in various applications due to their unique chemical and physical properties.
Foils made from FEP:
FEP foils are made of fluoroethylene propylene, a fluoropolymer produced by the copolymerization of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP). FEP is characterized by high transparency, flexibility and excellent electrical insulation properties.
Properties and applications:
Temperature resistance:
FEP foils have a high temperature resistance and can be used at temperatures of up to 200°C without impairing their structural properties.
Chemical resistance:
FEP is chemically inert and has excellent resistance to a wide range of chemicals, which makes it attractive for applications in the chemical industry.
Good dielectricity:
FEP’s dielectric properties make it an excellent insulation material used in the electrical industry for cable sheathing and insulators.
Transparent:
FEP foils are transparent and retain their clarity even after prolonged exposure to UV radiation.
Low friction:
FEP is characterized by low friction, which makes it useful in applications with low frictional resistance and good sliding properties.
Foils made of PTFE:
PTFE foils are made of polytetrafluoroethylene, a fluoropolymer produced by the polymerization of tetrafluoroethylene. PTFE is best known under the brand name Teflon® and is considered one of the most resistant materials to chemicals and extreme temperatures.
Properties and applications:
Extremely high temperature resistance:
PTFE foils can withstand temperatures of up to 260°C without changing their chemical or physical properties.
Chemical resistance:
PTFE is inert and resistant to most chemicals, which makes it suitable for use in aggressive chemical environments.
Good dielectricity:
Due to its excellent dielectric properties, PTFE is used in the electrical industry for insulators, cable sheathing and other applications.
Low friction:
PTFE has extremely low friction and is therefore often used as a non-stick coating in cookware, sliding material in bearings and other applications.
Non-adhesive:
PTFE is non-sticky, which means that substances do not adhere to the surface and slip off easily.
In both cases, FEP and PTFE foils are used in applications such as seals, insulators, chemical equipment, electrical cables and many more due to their unique properties.
The choice between the two depends on the specific requirements of the application in question.