Opti-Feed SLIW Gravimetric Dosing

TSM’s Opti-Feed is an economical color and additive feeder delivering exact dosing rates and utilizing TSM’s continuous Loss-in-Weight technology, with precise control of the feeding speed.






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TSM’s Opti-Feed in-line gravimetric feeder delivers precise in-line dosing of pellets, regrind and powder, delivering maximum material savings. This unique design, employing the patented dosing cylinder combined with stepper motor, ensures that the additive is metered evenly and extremely accurately. The dosing cylinder eliminates any pulsation during metering into the main plastic stream, thus offering maximum control of the process and the end product.




  • Prevents coloring materials to become lodged between mechanical parts, i.e. less downtime and efficient use of expensive coloring agents.

  • Actively prevents pulsating, i.e. it guarantees consistent output quality.

  • Reduces colorant and additive usage due to its superior metering characteristics -direct cost reduction.

  • Dosing rate ranges from 70g/hr to 180kg/hr. Higher torque motors available for metering large quantities of material.

  • High Precision Dosing Control 0.01%

  • Low Maintenance

  • Modular Construction

  • Reliable & Consistent Performance

  • Patented design 

  • Robust construction

  • Several viewing windows

  • 24.8mm quadrangular dosing spiral

  • Core diameter 10-18 mm (12mm as std)

  • 100% loss in weight 

  • Less calibration time

  • Changes in additives properties corrected

  • Traceability: every shot is measured 

  • Easy to use. Only input is shot weight and dosing percentage

  • Micro Dosing Rates

  • Regrind Dosing

  • Powder Dosing

  • High Output Dosing rates

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Are you a project engineer looking for a solution which avoids downtime but is customizable to your needs? TSM has the resources for any project, along with the expertise in delivering world class service and support. For quality products delivered on time and in budget, get in touch with TSM today to learn more.