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Lubricated Paste Extrusion

Available in white powder, often called "fine powder," these fluoroplastic resins are uniquely capable of being sheared by lubricated paste extrusion into a coherent fibrous matrix with useful structural integrity. DuPont™ Teflon® PTFE (polytetrafluoroethylene) fine powders provide a practical method for producing long lengths of product from a resin that cannot be melt-extruded.

Processing

Processing Teflon® PTFE fine powders are processed by mixing them with a hydrocarbon liquid to facilitate extrusion as a paste. After extrusion, the liquid is removed from the extrudate with heat. The resulting low-density product can then be used or heated further to obtain a solid resin structure. The properties of the solid resin are similar to those of Teflon® PTFE granular molding powders.



Grades, Characteristics, and Applications


Teflon® PTFE Grade
Resin Characteristics
Applications

6C 

6CN X

6C X

 General-purpose resin. Medium reduction ratio. Excellent color and clarity. Accepts filler exceptionally well.
  • Push/pull cable liner
  • Hose
  • Electrical tape and sleeving
  • Wire and cable coating
  • Unsupported tube
  • Heat-shrinkable tubing

60

60 X
 

 Low reduction ratio. High-pressure resin.
  • Unsintered tape
  • Coaxial cable
  • Low reduction ratio wire and cable coating

62 

62 X

62N X

 Premium resin offers highest thermal stability, stress crack resistance, flex life, and clarity of all grades. Low to medium reduction ratio.
  • Premium hose
  • Pump diaphragms
  • Unsupported tubing
  • Convoluted tubing

62XT X

 		 Premium resin that has increased thermal stability, superior flex life, superior crack resistance, low permeability and high clarity. Medium to high reduction ratios.
  • High quality tubing
  • Spaghetti tubing
  • Wire coating
  • Flanging
  • Welding
  • Blow moulding
  • Convoluting


601A 

601 X

 High molecular weight. Low reduction ratio. Excellent thermal stability.
  • Unsintered tape
  • Porous applications


602A 

602 X

 Low reduction ratio. Medium molecular weight. Excellent thermal stability.
  • Pipe liners
  • Porous applications
  • Wire and cable coating


613A 

613A X

 Low reduction ratio.
  • Thin electrical grade tape

640XT X 		 Designed for processing over a wide extrusion reduction ratio range (250:1 to 5000:1) with excellent performance even at the top of this range. Can be extruded with very low lubricant levels.
  • High performance wire and cables
  • Tubing
  • Additive

669N X

669 X

 Designed for processing at very low to medium reduction ratios (10:1 to 500:1). Particularly suitable for pipe liners and general tubing.
  • Pipe liners
  • Tubing
  • Unsintered tape

605XT X

 		 Designed for processing at very low to medium reduction ratios (10:1 to 300:1). Particularly suitable for unsintered stretched products and for sintered products with high mechanical properties.
  • Unsintered articles
  • Filter membranes
  • Gaskets
  • Sintered pipe liners and tubes

CFP 6000 X



 High reduction ratio. Low-pressure resin.