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Screen Changers, Melt Pumps & Crossheads

Supplier: Telford Smith Engineering

Telford Smith offers a range of manual and fully automatic screen changers engineered for reliability, productivity and cost effectiveness in virtually any extrusion process environment.

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Ideal for processes requiring optimised polymer filtration prior to final sizing of the product and widely used for recycling operations.

  • Optimised polymer filtration
  • Leak free operation
  • Maximised throughput
  • Minimal pressure drop during filter changes
  • Easy maintenance
  • Safe operation
  • Extruders screws may be removed through the screen changer while mounted on the barrel
  • Adaptors to suit existing equipment and processes

Manual screen changers

6 models available from 25 to 120mm. Manual screen changers are suitable for any extrusion process which can tolerate momentary shutdown to change screens. A multi position handle allows operators better access to the screen changer from either side of the extruder.

Hydraulic screen changers

4 models available from 65 to 152mm. Suitable for operation up to 10,000 psi, pressure drops to 3,000 psi and processing temperatures up to 850 degrees F. Close coupling to the extruder is available with the standard built through extruder connection. Hydraulic screen changers are fully assembled and pre wired and require only a single temperature control unit. Pressure activated seals ensure leak free operation. A hydraulic power pack with accumulator ensures fast screen changeover with minimal interruption to the extrusion process.

Continuous screen changers

4 fully automatic PLC controlled models available from 65 to 152mm.

Melt Pumps

Many models to choose from for 5 to 14,000 kg/hr and suitable for processing most thermoplastic materials. With a melt pump between your extruder and die you can directly dial in gauge control thus eliminating extruder surge and screw beat at the die. A positive displacement melt pump will efficiently build up pressure and meter the output of the polymer through the die. A closed loop control unit integrated with the extruder screw speed ensures an adequate amount of polymer is delivered to the pump regardless of inlet pressure variations due to extruder surge and beat. Melt pumps offer the perfect solution for sheet extrusion applications.

Crossheads for Wire and Cable

Telford Smith supply fixed center crossheads and peripheral equipment for the wire and cable industry. Our crossheads from 2,5 mm to 130 mm combine best-quality steel and alloys with unique curing technologies and cutting-edge high precision manufacturing. Crossheads are suitable for numerous applications including single layer extrusion, dual- and multilayer extrusion, co-extrusion, and fluoro polymer extrusion. Our technical experts are at your disposal for an analysis of your application in order to offer you the best and most economic solution for your extrusion needs.

For more information on Screen Changers, Melt Pumps & Crossheads please call or use the industrySearch email form for a direct reply.

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