Paste Extruder

Paste Extruder

World Class Solution in PTFE Technology
Patented technology which sets new standarts

ptfe-paste-extruder

PTFE extrusion process with a PTFE Extruder also known as PTFE Paste Extruder or only PTFE Extruder

Paste extrusion is applied the PTFE production of thin hoses, thick tubes (liners), wire insulation and unsintered tapes of PTFE. For the PTFE Paste Extruder exclusively emulsion polymerization powder is used. The paste is a mixture of these spongy PTFE powder types with wetted organic fluids.

The extruding direction can be done:

  • vertical up
  • vertical down
  • horizontal
  • others

Advantages of Keicher PTFE Paste Extruder:

  • hight tube concentricity though patented-System
  • Low wall thickness tolerance 
  • High accurancy extrusion by additional speed control
  • Measurement transducers like pressure, force and speed for permanent control of the extrusion process
  • Additional heateble extrusion nozzled for better extrusion quality
  • Hydraulic closure with high closing force for quick loading of the extruder
  • Quick loading with special loading carriage, also possible with several pre-forms, no manual touch
  • Quick chargeable press cylinder
  • Electrically Adjustable mandrel
  • Operation through touchscreen and recording of the extrusion parameters safe operations date   
  • Automatic adjusting for Extruder, Preform and Oven according to preexisting recipes

The process is done in batch quanitities:

The PTFE lubricant mixture firstly is pre-pressed to so-called pre-forms and then put into PTFE Paste Extruder which works on the priciple of the ram extrusion. Then the pre-form is pressed through a conic nozzle in cold or slightly pre-heated condition. The extrudate is separated from the still containing lubricant within the drying zone and then sintered.

Sizes of PTFE-Paste Extruder

The PTFE-Paste Extruder is build in different sizes 
The size is the max diameter of preform
  • 50mm (2″)
  • 50 - 100mm (4″)
  • 100 - 150mm (6″)
  • 150 - 200mm (8″)
  • 200 - 250mm (10″)
  • 250 - 300 (12″)
ptfe-tubes-product-example

Small tubes (product example)

ptfe-tubes-small-and-big-product-example

Small and big tubes (product example)

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