Pultrusion & Continuous Composite Profiles worked example

Pull Speed at 65% line efficiency: a worked example

Suppose line 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. Pull speed is the linear rate at which a pultrusion machine draws impregnated reinforcement through the heated forming die, and it governs everything downstream: cure state, surface finish, and output.

The inputs for this scenario

  • Linear feet of profile pulled per shift: 1,200 units (held at the documented default)
  • Machine running hours in the shift: 8 hr (held at the documented default)
  • Line efficiency (uptime after gel/cure holds): 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw pull speed = completed output รท runtime.
  • Effective throughput works out to 97.5 ft / min at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 150 ft / min 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 line efficiency sits at 90% and the headline result is 135 ft / min, this scenario comes in 27.78% below the baseline at 97.5 ft / min.
  • It computes effective and raw pull speed in ft/min from the footage pulled in a shift, the machine's running hours, and a line efficiency percentage. 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 ft / min (headline result)
  • Raw throughput: 150 ft / min
  • Efficiency: 65 %
  • Runtime: 8 hr

Run it with your numbers

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

Last reviewed 2026-05-12.