Bioplastics & Biomaterials Processing worked example

Extruder Throughput at 63% extrusion line uptime: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop extrusion line uptime to 63%, then walk the calculation through step by step. Estimate good extrusion output for bioplastic compounding, sheet, film, or profile runs from output per cycle, available cycles, line uptime, and yield.

The inputs for this scenario

  • Extruder output per cycle: 850 kg/cycle or lb/cycle (held at the documented default)
  • Available extrusion cycles: 8 cycles (held at the documented default)
  • Extrusion line uptime: 63 % (the input this scenario stresses; the baseline uses 88)
  • Extrusion first-pass yield: 94 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross extrusion output = extruder output per cycle × available extrusion cycles.
  • Good extruder throughput works out to 4,027 kg or lb at these inputs, and this is the headline figure for the scenario.
  • Gross extrusion output works out to 6,800 kg or lb at these inputs.
  • Extrusion downtime loss works out to 2,516 kg or lb at these inputs.
  • Extrusion quality and scrap loss works out to 257 kg or lb at these inputs.

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 28.41% below the baseline at 4,027 kg or lb.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to extrusion line uptime, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats uptime and yield as flat averages — it won't capture a single catastrophic jam or a yield cliff tied to one bad lot, and it ignores rate loss when the line runs slow but stays 'up'.

Results at a glance

  • Good extruder throughput: 4,027 kg or lb (headline result)
  • Gross extrusion output: 6,800 kg or lb
  • Extrusion downtime loss: 2,516 kg or lb
  • Extrusion quality and scrap loss: 257 kg or lb

Run it with your numbers

  • To rerun this with your own numbers, open the live Extruder Throughput calculator, set extrusion line uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.