RAM Extruder

The vertical RAM extruder from Keicher Engineering AG enables the continuous production of profiles, especially from PTFE (Polytetrafluoroethylene) and UHMW-PE (Ultra-High Molecular Weight Polyethylene). The raw material is fed into a cylindrical extrusion tube, compressed by a piston, and simultaneously transported through the tube, which is heated to sintering temperature. The individual dosing units sinter together to form a continuous extrudate.

<li>Single rods</li> <li>Multiple rods</li> <li>Single tubes</li> <li>Multiple tubes</li> <li>Single profiles</li> <li>Multiple profiles</li>

<li>PTFE, Teflon®</li> <li>PEEK</li> <li>UHMW-PE</li> <li>Compounds</li> <li>Polyimide and polyimide compounds</li> <li>All plastics suitable for RAM extrusion</li>

  • Long service life through solid workmanship and use of high-quality components
  • Short set-up time easy and quick die change
  • Constant high quality of the products through permanent electrical measurement of the extrusion pressure and precise temperature regulation
  • Economical consumption of cooling water through thermostatic valves
  • Connection possibility for a heated/cooled mandrel, especially for the manufacture of large thick-walled tubes.
  • Dimensional accuracy of the products through movable mandrel.
  • Low space requirement through vertical constrction
  • Uniform an exact dosing through vibratory dosing balance
  • User-friendly and maintenance-free system
  • Possibility of stepwise extension to a complete automatic manufacturing system through modular construction
  • Lower compressive force and careful processing in tube extrusion through movable mandrel
  • Max. product quality through adjustement of the back pressure by means of special brake and permanent measure of the extrusion pressure.
  • Big choice of extruder types for the different materials like PTFE, PE_UHMW, polyimide and recycling material (chips of wood, coconut fibers, straw – growing raw material with polymer)
  • Big range of additional equipment like different saws as well as single and multile brakes
  • Control systems of the latest technology possible woth graphic display and interface to the PC
  • There are more ram extruders available on request.
The Extrusion Process with WK RAM Extruders

<p><strong>Ram extrusion</strong> is a process enabling the continuous manufacture of sections, especially of <strong>PTFE (polytetrafluorethylene)</strong>. The basic material is PTFE powder. The powder is fed into a cylindrical extrusion pipe, compressed by means of a ram and, at the same time, transported through the pipe, which is heated up to sintering temperature. The individual dosing charges sinter together into a continuous extrudate.</p><br> <strong>1. Products:</strong> <p><em>Extremely thin and thick walled tubes, rods, sections and hollow sections, each for continuous production</em></p><br> <strong>Materials which can be processed:</strong> <ul> <li><strong>PTFE</strong>, e.g. Dyneon, Teflon, Fluon etc., regenerate</li> <li><strong>UHMW-PE</strong> (Ultra-high molecular low-pressure polyethylene), e.g. Hostalen GUR as well as compounds</li> <li><strong>Polyimide</strong> and Polyimide Compounds</li> <li><strong>Natural fibre material</strong> like wood etc. with chemical additives</li> <li><strong>All ram extrudable plastics</strong></li> </ul><br> <table border="1" cellpadding="8" cellspacing="0"> <tr> <td><strong>2</strong></td> <td><strong>Powder feeding:</strong><br> Exact dosing with the vibratory dosing balance</td> <td rowspan="8" valign="middle" align="center"> <img src="/wp-content/uploads/process-ram-extrusion.jpg" alt="Technical Diagram" width="100%"> <br><small><em>Process Overview</em></small> </td> </tr> <tr> <td><strong>3</strong></td> <td><strong>Pressing cylinder:</strong><br> For moving the ram</td> </tr> <tr> <td><strong>4</strong></td> <td><strong>Retracting cylinder:</strong><br> For retracting the mandrel (in tube production)</td> </tr> <tr> <td><strong>5</strong></td> <td><strong>Ram:</strong><br> For compressing the powder</td> </tr> <tr> <td><strong>6</strong></td> <td><strong>Extrusion pipe:</strong><br> Main processing chamber</td> </tr> <tr> <td><strong>7</strong></td> <td><strong>Heating sleeves:</strong><br> For heating the extrusion pipe</td> </tr> <tr> <td><strong>8</strong></td> <td><strong>Drive:</strong><br> For the stirring device</td> </tr> <tr> <td><strong>9</strong></td> <td><strong>Movable mandrel:</strong><br> For hollow section production</td> </tr> </table><br> <p><strong>Dies (Components 5, 6, 7, 9):</strong></p> <ul> <li>Single and multiple dies for tube and rod extrusion</li> <li>Centering die suspension</li> </ul><br> <strong>Control Unit:</strong> <ul> <li><strong>Manual control:</strong> For set-up</li> <li><strong>Fully automatic control:</strong> For continuous operation</li> <li><strong>Switchboard:</strong> Contains all elements for hydraulic control and temperature regulation</li> </ul><br> <hr> <p><small><em>Documentation of Ram Extrusion Process for PTFE and other plastic materials</em></small></p>

Discover WK RAM Extruders

<table style="width: 100%; border-collapse: collapse; border: 1px solid var(–base-light);"> <thead> <tr style="background-color: var(–primary-ultra-light);"> <th style="border: 1px solid var(–base-light); padding: 8px; text-align: left;">Model</th> <th style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">Range of Diameter [mm]</th> <th style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">Compressive Force [kN]</th> <th style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">Single Dies Rod</th> <th style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">Single Dies Tube</th> <th style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">Multiple Dies Rod</th> <th style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">Multiple Dies Tube</th> </tr> </thead> <tbody> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 75L</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…75</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">50</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">-</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">-</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">-</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 75</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…75</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">100</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 100</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…100</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">100</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 150L</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…150</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">100</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">-</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">-</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 150</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…150</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">100</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 150 V15</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…150</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">150</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 150 V30</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…150</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">300</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 150 V70</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…150</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">700</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 200</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…200</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">150</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 200 V30</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…200</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">300</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 200 V70</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…200</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">700</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 320</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…320</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">320</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>FRE 320 V70</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…320</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">700</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> <tr> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: left;"><strong>WFE 500</strong></td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">3…500</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">4000</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> <td style="border: 1px solid var(–base-light); padding: 8px; text-align: center;">+</td> </tr> </tbody> </table>