Pultrusion & Continuous Composite Profiles worked example

Line Throughput at 65% pull efficiency: a worked example in pultrusion & continuous composite profiles

Suppose pull efficiency falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Line throughput is how many pultruded profiles a die and pulling system actually deliver per hour once uptime and yield losses are counted.

The inputs for this scenario

  • Profiles pulled this shift: 1,200 units (held at the documented default)
  • Line run time: 8 hr (held at the documented default)
  • Pull efficiency (uptime × yield): 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw line throughput = completed output ÷ runtime.
  • Effective throughput works out to 97.5 units / hr at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 150 units / hr at these inputs.
  • Efficiency works out to 65 % at these inputs.
  • Runtime works out to 8 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where pull efficiency sits at 90% and the headline result is 135 units / hr, this scenario comes in 27.78% below the baseline at 97.5 units / hr.
  • It converts completed profile count and run time into a raw units-per-hour rate, then derates it by an efficiency percentage to give effective throughput. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Effective throughput: 97.5 units / hr (headline result)
  • Raw throughput: 150 units / hr
  • Efficiency: 65 %
  • Runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Line Throughput calculator, set pull efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.