Ram extrusion is a process enabling the continous manufacture of sections, especially of PTFE (polytetrafluorethylene). The basic matrial 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 continous extrudate.
 
1 Products:
extremely thin and thick walled tubes, rods, sections and hollow sections, each for continous production

Material which can be processed:
PTFE, e.g. Dyneon, Teflon, Fluon etc., regenerate, UHMW-PE (Ultra-high molecular low-pressure polyethylen, e.g. Hostalen GUR as well as compounds, Polyimide und Polyimide Compounds as well as natural fibre matrial like wood etc. with chemical additives as well as all ram extrudable plastics

2 Powder feeding:
exact dosing with the vibratory dosing balance

3 Pressing cylinder for moving the ram

4 Retracting cylinder for retracting the mandrel (in tube production)

5 Ram for compressing the powder

6 Extrusion pipe

7 Heating sleeves for heating the extrusion pipe

8 Drive for the stirring device

9 Movable mandrel
 
 

Dies (5,6,7,9):
single an multiple dies for tube and rod extrusion, centering die suspension

Control unit:
manual control for set-up, fully automatic control for continous operation swichboard contains all elements for hydraulic control and temperature regulation.