Electrical Reliability
Superior reliability and retention of properties over large areas of
film
High dielectric strength, over 6500 V/mil for 1 mil film (260 kV/mm
for 0.025 mm film)
No electrical tracking, non-wettable, and non-charring
Very low power factor and dielectric constant, only slight change over
wide ranges of temperature and frequency
Wide Thermal Range
Continuous service temperature -240 to 205°C (-400 to
400°F)
Melting range 250 to 280°C (500 to 540°F)
Heat sealable
Mechanical Toughness
Superior antistick and low frictional properties
High resistance to impact and tearing
Useful physical properties at cryogenic temperatures
Product Grades
Norton® FEP fluoropolymer film is manufactured from
flourinated ethylene propylene (FEP) resin by Saint Gobain Advanced films
and Fabrics in four grades.
FEP Type FG utilizes the low dielectric constant and
dissipation over a wide range of temperatures and frequencies for a low
signal distortion and attenuation in flexible printed circuit and flat
cable applications. The high surface and volume resistivity minimizes
current leakage and provides excellent insulation in wire and cable
applications.
Norton® FEP also provides the chemical and thermal
resistance to withstand aggressive environments, making it an excellent
candidate for diaphragms, gaskets, protective linings, sample bags, and
containers. Fabricated shapes and contours can be produced via heat
sealing and thermal forming. The outstanding weatherability and optical
properties of FEP film provide excellent performance in environmental
growth chambers and solar collectors.
FEP Type FS is a translucent film made from high molecular
weight resin for applications where high flex life and stress crack
resistant performance is required, such as tank linings and
diaphragms.
FEP Type RF is a clear or pigmented film designed for release
applications. The non-stick surface, chemical resistance, and
205°C (400°F) usage temperature make FEP Type RF an
ideal release film for composite molding over a wide range of resin
systems. High elongation and a smooth, low gel film surface allow FEP to
conform to complex mold contours and produce a smooth part finish.
Perforated film is available to control outgassing and resin bleed.
Pigmented films increase visibility to speed removal from parts and
mold.
FEP Type WF (mechanical grade) film is an ideal economical
solution for applications that don't require high aesthetic standards,
such as hot melt adhesive (welding tape) application. FEP WF film
possesses all physical , mechanical, and thermal properties of FEP FG
grade, while offering up to 15% savings. (see below)
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