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Torque Reduction

Reduce Extruder Torque

Easy, clean release from the mold is critical to high part quality, high productivity and scrap avoidance. It also expands design freedom: better mold release enables complex, thin parts with long flow lines.

Extruder torque plays a key role in processing speed, throughput, equipment stress and power consumption. Because flowability of the material is a major factor, it is particularly challenging to reduce torque when extruding high-viscosity materials, such as glass-filled compounds.

Dow Corning's advanced siloxane additives significantly improve material flow in extrusion operations, leading to reduced screw torque and lower extruder amperage. These high-performance additives migrate to the interface between the material and the screw surface, where they decrease friction and improve slip so the extruder does not have to work so hard.

Our silicone additive technology also improves the compatibility of organic and inorganic materials in highly filled compounds. Better compatibility further enhances flow properties and reduces equipment degradation caused by exposure to harsh fillers.

Solving Your Processing Challenges

By reducing torque, particularly when extruding high-viscosity materials, Dow Corning's siloxane additives help achieve:

  • Higher throughput
  • Faster cycle times
  • Lower power consumption
  • Extended equipment life
  • Cost-effectiveness with low loadings of 0.1% to 1.0%

Product highlights include:

  • Dow Corning® HMB-0211 Masterbatch: A pelletized concentrate designed to be used as an additive in polyolefin-based compounds to impart machine lubrication during processing.
  • Dow Corning® MB50-001 G2 Masterbatch: A pelletized concentrate containing ultra-high molecular weight siloxane polymer reactively dispersed in polypropylene homopolymer.
  • Dow Corning® 31-441 Additive: A solid silicone polymer to be used as an additive in polyamide-based composites. It improves the extrusion process by decreasing torque.

Find out how Dow Corning can help you optimize extrusion efficiency and control costs with silicone processing aids. It's as easy as contacting your Dow Corning representative.

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