Barrel and Feed Section
Standard barrels are manufactured from high grade alloy steel and nitrided. The feed section is integrated with the extruder barrel for improved heat transfer and performance. Expect improved feeding and performance from your Telford Smith extruder. Optional bimetallic barrels are available for abrasive materials and offer an extended operating life. Downstream barrel openings for venting and feeding are available on request. All barrels are tapped for optional rupture plugs and/or melt pressure and temperature probes. Barrel flanges may be manufactured to suit screen changers, melt pumps and various accessories. Optional mechanical or hydraulic head clamps are available on request.
Barrel Heating and Cooling
Standard Telford Smith extruders are equipped with high quality heating and cooling assemblies comprising:
- Multiple ceramic heater bands with tensioning device to ensure close heater contact with the barrel surface.
- Multiple alloy cooling fins for efficient heat transfer and cooling control.
- Insulated stainless steel covers ensuring operator safety and heating efficiency.
- High capacity cooling fans
Precise heating control allows optimum performance of the extruder at high throughputs.
Telford Smith offer a range of high performance screws for various applications. Typical materials include: LDPE, LLDPE, HDPE, PP, HIPS, ABS, PET, UPVC, Flexible PVC, Nylon. Screw types including: Metering screws, barrier screws, two stage screws for venting, screws with various types of mixing heads.
Gearbox and Thrust Section
High quality, double reduction gear reducer. Forced feed oil lubrication system with oil flow and temperature monitoring devices. All gear boxes equipped with heat exchanger to ensure constant operating temperature.
Main Drive Motor
Standard Telford Smith extruders are equipped with DC motors, however, AC motors are available on request. All motors are equipped with tacho feedback, or encoder, for screw speed control. High capacity fans and air filters ensure cool, clean air is delivered to the motor windings. Customers may nominate preferred motor suppliers.
Standard extruders equipped with heavy duty vee belts and pulleys. Extruders with motors in excess of 342kW are equipped with a direct drive coupling.
Sectioned sheet metal guards are provided to protect operators from moving parts and designed to all allow easy access for service and maintenance.
Fabricated Extruder Base
Telford Smith Extruder bases are fabricated from heavy duty mild steel plate to ensure precise alignment of the barrel in relation to the gear reduction unit. An adjustable barrel support allows precise alignment during installation which is a crucial factor in ensuring extended service life of the screw and barrel.
Extruder bases may be supplied in various configurations to suit specific customer requirements i.e. left or right hand, various centre line heights, vertical extrusion, etc.
Fabricated mild steel, powder-coated, hopper with shut off gate and material discharge chute. Alternative hopper designs available on request to suit specific customer requirements.
Features of the Telford Smith electrical control system:
- Solid state heating controls
- Digital temperature controllers
- Digital screw rpm indicator
- Digital ammeter to indicate motor load
- High quality European DC drive
- All electrical enclosures manufactured to IP54 standards
- Free standing control panel with air circulation fan and filter
- Extruders wired to numbered terminal strips on the machine base
Optional features which may be fitted on request include 24 x 7 hour heating timers, digital melt temperature and pressure instrumentation, alternative DC drives and motors, PLC controls with touch screens, air conditioning and integration with existing equipment and processes.
We have a range of Extruding Machines for Plastics, Twin Screw for compounding and master batch applications. LDPE, HDPE, PP, ABS, PS etc Also available for special purpose applications such as wood plastic and Single Screw Extruders for your process with throughputs up to 2,500kg/hour. Whether you are producing pipe, profile, film, wire and cable, sheet, fibre or compounding.
Consult one of our experienced process engineers and we will find the solution which best suits your processing requirements. For more information on Extruder Machines for Plastic applications please call or use the IndustrySearch email form for a direct reply.