Paste Extruder
High-precision PTFE extrusion with variable automation options
The paste extruder from Keicher Engineering AG enables batch production of PTFE products such as thin-walled hoses, thick pipes (liners), wire insulation, and unsintered PTFE tapes. A mixture of emulsified PTFE powder and organic lubricants is pressed into so-called preforms. These preforms are subsequently extruded through a conical die, dried, and sintered.
Advantages of Keicher RAM Extruders or PTFE Extruders
- High pipe concentricity due to patented system
- Low wall thickness tolerance
- High extrusion accuracy through additional speed control
- Transducers for pressure, force, and speed for permanent process control
- Additional heated extrusion nozzle for better extrusion quality
- Hydraulic clamping with high closing force for fast loading
- Fast loading with special loading cart, also with multiple preforms, without manual contact
- Quick-loadable pressing cylinder
- Electrically adjustable mandrel
- Operation via touchscreen and recording of extrusion parameters
- Automatic adjustment of extruder, preform, and oven according to existing recipes
WK Extruder Technical Data
| WK Paste Extruder /LC Version – Production Survey | ||||
|---|---|---|---|---|
| Model | Range of diameter [mm] | Compressive force [kN] | Max. Pre-form diameter Approx. [Inch] | Max. Pre-form Length [mm] |
| WPE 10/250 VH LC | 1…5 | 100 | 1.5 | 250 |
| WPE 10/350 VH | 1…5 | 100 | 1.5 | 350 |
| WPE 25/1000 VH LC | 2…10 | 250 | 2.5 | 1000 |
| WPE 30/48″ VH LC | 3…20 | 300 | 3″ | 48″ |
| WPE 40/500 VH LC | 6…40 | 400 | 4 | 500 |
| WPE 40/1000 VH LC | 6…40 | 400 | 4 | 1000 |
| WPE 40/100 VH LC SP | 6…40 | 400 | 4 | 1000 |
| WPE 40/1800 VH LC | 6…40 | 400 | 4 | 1800 |
| WPE 60/500 VH LC | 6…50 | 600 | 6 | 500 |
| WPE 60/1000 VH LC | 6…50 | 600 | 6 | 1000 |
| WPE 80/500 VH LC | 6…50 | 800 | 6 | 500 |
| WPE 80/1000 VH LC | 6…50 | 800 | 6 | 1000 |
| WPE 80/1000 VS | 6…50 | 800 | 6 | 1000 |
| WPE 80/1000 VH LC | 6…50 | 800 | 6 | 1000 |
| WPE 80/1200 VH LC | 6…50 | 900 | 6 | 1200 |
| WPE 100/1000 VH LC | 8…50 | 1000 | 8 | 1000 |
| WPE 100/1800 VH LC | 8…50 | 1000 | 8 | 1800 |
| WPE 125/1000 VH LC | 8…50 | 1250 | 10 | 1000 |
| WPE 125/1800 VH LC | 8…50 | 1250 | 10 | 1800 |
| WPE 150/1000 VH LC | 8…50 | 1500 | 10 | 1000 |
| WPE 150/1800 VH LC | 8…50 | 1500 | 10 | 1800 |
| WPE 30/1800 HH LC | 2…8 | 300 | 3 | 1800 |
| WPE 40/500 HH LC | 6…40 | 400 | 4 | 500 |
| WPE 40/650 HH LC | 6…40 | 400 | 4 | 650 |
| WPE 40/1000 HH LC | 6…40 | 400 | 4 | 1000 |
| WPE 40/3000 HH LC | 2…8 | 400 | 3 | 3000 |
| WPE 60/500 HH LC | 6…50 | 600 | 6 | 500 |
| WPE 60/1000 HH LC | 6…50 | 600 | 6 | 1000 |
| WPE 80/500 HH LC | 25…350 | 800 | 16/3.5″ 8/1/8″ |
500 |
| WPE 100/650 HH LC | 25…350 | 1000 | 16/3.5″ 8/1/8″ |
650 |
| WPE 125/1000 VH LC | 25…350 | 1200 | 15/2.7″ 10/2.5″ |
800 |
| * Diameter depending on the respective Rv-value (reduction ratio) of the desired tube (hose) and of the used fine powder quality | ||||
WPE 10/350 VH
hydraulically driven, to be charged from top to below with mechanical closure force: 100kN (10t) press cylinder lenght: 350 mm pre-form diameter: 40/10 mm
WPE 30/48″ VH LC
Two-cylinder version hydraulically driven, to be charged from below with hydraulic closure force: 300kN (30t) press cylinder lenght: 48″ pre-form diameter: 1.6″/ 3/4″
WPE 30/48″ VH LC
back side with hydraulic unit and electric switchboard
WPE 30/48″ VH LC
operating panel with installed heat controllers
WPE 40/1000 VH-LC SP
two paste extruder WPE 40/1000 VH-LC SP upper part with press cylinder, hydraulic closure and master nozzle with pressure sensor. Extrusion from below to the top, to be charged from the top. force: 400kN (40t) press cylinder stroke: 1000 mm pre-form diameter: 4″/1″
WPE 40/1000 VH-LC SP
part below with hydraulic cylinder, mandrel adjustment and control valve
WPE 40/1000 VH-LC SP
hydraulic closure with master nozzle and push button for two-hand operation
WPE 40/1000 VH-LC SP
Electric switchboard for paste extruder WPE 40/1000 VH-LC SP
WPE 40/1800 VH LC
WPE 40/1800 VH LC
mandrel fine adjustment, mechanical
WPE 40/1800 VH LC
mandrel fine adjustment, mechanical
WPE 40/1800 VH LC
Hydraulic closure with press cylinder, heated
WPE 80/1000 VS
spindle driven, to be charged from the top and from below with special mechanical closure force: 800 kN (80t) press cylinder lenght: 1000 mm pre-form diameter: 4″/1″/2.5″/1″
WPE 80/1000 VS
Operating panel for WPE 80/1000 VS
WPE 80/1000 VS
Operating area of paste extruder WPE 80/1000 VS left changing device for die and cylinder
WPE 80/1000 VS
Special lowering device for vertical extruded PTFE paste hose
WPE 100/1000 VH LC
with hydraulic unit and electric switchboard force: 1000 kN (100t) press cylinder lenght: 1000 mm pre-form diameter: 200/90 mm
WPE 100/1000 VH LC
Hydraulic unit with electric mandrel adjustment and connection for exhaust of benzene/air mixture of the inner hose. At the left: Press cylinder with hydraulic cylinder of the pre-form press flanged below
WPE 100/1000 VH LC
Hydraulic closure with button for two-hand operation master nozzle and pressure sensor
WPE 100/1000 VH LC
Single acting pre-form press with hydraulic closing unit as well as operating panel for pre-form diameter 200/90 mm and pre-form lenght 1000 mm
WPE 100/1000 VH LC
Indication and operating unit in double electric switchboard
WPE 100/1000 VH LC
Transport unit for pre-form diameter 200/90 mm and pre-form lenght 1000 mm
WPE 100/1000 VH LC
left: lowering device right: loading carriage
WPE 40/500 HH
hydraulic driven, to be loaded at the back force: 400 kN (40t) press cylinder lenght: 350 mm pre-form diameter: 4″/1″ mm
WPE 40/500 HH
Electric switchboard for paste extruder WPE 40/500 HH
WPE 40/500 HH
Operating panel for paste extruder WPE 40/500 HH
WPE 40/500 HH
Mandrel adjusting unit, hydraulic block and hydraulic unit for paste extruder WPE 40/500 HH
WPE 40/500 HH
Protecting device for compression ram and mandrel for paste extruder WPE 40/500 HH
WPE 40/500 HH
heated master nozzle with tube die for paste extruder WPE 40/500 HH