Resin
Teflon® FEP is a fluorinated ethylene propylene resin that meets the ASTM Standard Specification for FEP—Fluorocarbon Molding and Extrusion Materials under ASTM Designation D2116-95a. It is available as pellets or as stabilized aqueous dispersions. Applications for this family of resins include melt extrusion, coating, and impregnating. Products made from Teflon® FEP are known for their excellent chemical resistance, superior electrical properties, and high service temperatures of up to 200°C (392°F). In addition, Teflon® FEP provides outstanding low-temperature toughness and unique flame resistance.
Teflon® FEP fluoropolymer resins are processed by conventional melt-extrusion techniques and by injection, compression, transfer, and blow-molding processes.
The high melt strength and draw-down capability of these resins facilitate the use of large dies and draw-down tooling to increase production rates. Equipment in contact with molten resin should be made of corrosion-resistant metals.
Larger length-over-diameter extruder barrels are used to provide enough residence time at high production rates to melt these high-temperature polymers. Reciprocating screw injection molding machines are recommended.
| Teflon® FEP Grade |
Resin Characteristics |
Applications |
100
[.pdf] |
General-purpose resin with the highest melt flow rate of the 100 series. |
Industrial and medical tubing Injection- or blow-molded pieces |
140
[.pdf] |
Like grade 100 with lower melt flow rate. |
Chemical linings Heat-shrinkable tubing and electrical sleeving Injection-molded pieces |
121A
[.pdf] |
Aqueous dispersions containing 55%, by weight, of Teflon® FEP particles. |
Impregnating and coating electrical insulation, fabrics, and metals |
CJ95
[.pdf] |
Specifically designed for plenum cable jacketing. |
Telecommunication cable jacketing |
CJ99
[.pdf] |
Specifically designed for applications that demand a high degree of stress-crack resistance. |
Wide range of wire sizes, in a wide range of wall thicknesses, and is suitable as a jacketing resin |
| 106N [.pdf] |
This is a high productivity grade of Teflon® FEP. |
Automotive, appliance, and heating cable primaries |
TE9494
[.pdf] |
Specifically designed for high-speed extrusion of thin coatings on small-gauge wires. |
For twisted-pair constructions |
Film
DuPont™ Teflon® FEP film is a transparent, thermoplastic film that can be heat sealed, thermoformed, vacuum formed, heat bonded, welded, metalized, laminated-combined with dozens of other materials, and can also be used as an excellent hot-melt adhesive.
This wide variety of fabrication possibilities combines with important properties [.pdf] to offer a unique balance of capabilities not available in any other plastic film.
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