Bioplastics & Biomaterials Processing worked example

Extruder Throughput at 99% extrusion line uptime: a worked example

Push extrusion line uptime up to 99% and the picture changes. This example computes every intermediate figure at that operating point. an extrusion or compounding line needs to confirm good output before committing a run, shipment, or conversion schedule

The inputs for this scenario

  • Extruder output per cycle: 850 kg/cycle or lb/cycle (unchanged)
  • Available extrusion cycles: 8 cycles (unchanged)
  • Extrusion line uptime: 99 % (raised for this scenario; the documented default is 88)
  • Extrusion first-pass yield: 94 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross extrusion output = extruder output per cycle × available extrusion cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 6,328 kg or lb for good extruder throughput, the number this scenario is built around.
  • At this operating point the engine returns 6,800 kg or lb for gross extrusion output.
  • At this operating point the engine returns 68 kg or lb for extrusion downtime loss.
  • At this operating point the engine returns 404 kg or lb for extrusion quality and scrap loss.

How this compares with the baseline

  • Against the tool's baseline example, where extrusion line uptime sits at 88% and the headline result is 5,625 kg or lb, this scenario comes in 12.5% above the baseline at 6,328 kg or lb.
  • It computes good extruder throughput by taking gross output (output per cycle times available cycles) and discounting it by both line uptime and first-pass yield. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Good extruder throughput: 6,328 kg or lb (headline result)
  • Gross extrusion output: 6,800 kg or lb
  • Extrusion downtime loss: 68 kg or lb
  • Extrusion quality and scrap loss: 404 kg or lb

Run it with your numbers

  • Every input above is editable in the live Extruder Throughput calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.