+44 (0)1785 761344 or 
info@polyflon.co.ukCast PTFE Film
PTFE fluoropolymer film
FLONFILM 100 cast PTFE film is a single layer, multi-laminar film manufactured using the cast method. By virtue of this unique processing method FLONFILM 100 PTFE film has a number of high performance features not inherent in skived tapes or extruded films. It is uniform in material structure; chemical, physical & electrical properties and tightly controlled in its thickness (+/-10%). Based on its capability to act as a semi-permeable membrane, FLONFILM 100 PTFE film is used in oxygen sensors & similar devices in bio-medical and other instrumentation. Two further grades are available:
FLONFILM 100.1 PTFE film is essentially two layers of the 100 grade duplexed & wound onto a single core under clean room conditions using carefully controlled web tension devices.
FLONFILM 100.2 PTFE film is a grade 100 film with one surface metalised by vacuum deposition of pure aluminium. Metalised coatings are applied with clear, insulated, uncoated margins of 2.5mm wide running the length of the film. Type 100.2 PTFE film is supplied in roll pairs with opposing margins. The surface resistivity (ASTM D-257-78) of the metalised surface is 1-2ohms/sq. Typical applications include capacitor dielectrics requiring critically held spacing & deep well instrumentation.
| General Properties | Method | Value |
|---|---|---|
| Tensile Strength (psi) | ASTM D882-54T | 4,300 |
| Elongation (%) | ASTM D882-54T | 400 |
| Elastic Modulus (psi) | ASTM D882 | 60,000 |
| Continuous Service | -188 °C, +250 °C | |
| Electrical Properties | Method | Value |
| Dielectric Constant, 60-108 Hz | ASTM D150 | 2.0 |
| Power/Dissipation | ASTM D150 | <0.0001 |
| Surface Resistivity | ASTM D257 | 9.0×1017 |
| Volume Resistivity | ASTM D257 | >1015 |
| Dielectric Strength (volts/mil) | ASTM D149 | 4,200 |
| Surface Arc Resistance | ASTM D495 | Does Not Arc |
| Forms Available | Type 100 | Type 100.1 | Type 100.2 |
|---|---|---|---|
| Thickness (μm) | 5,6,9,13,19,25,51,76 | 5,6,9,13,19 | 5,6,9,13,19 |
| Standard Roll | 457mm x 152m | 457mm x 152m | 75mm x 152m |
| Slit Rolls | 6mm min | 6mm min | 6mm min |
Click here for printable version – Cast PTFE Film
The data listed falls within the normal range of product properties but they should not be used to establish specification limits nor used alone as the basis of design. Polyflon Technology Limited assumes no obligation or liability for any advice furnished by it or for results obtained with respect to these products. All such advice is provided gratis and the buyer assumes sole responsibility for the results obtained in reliance thereon.
