Pultrusion & Continuous Composite Profiles worked example

Cure Die Dwell at 7.2% cure schedule safety allowance: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop cure schedule safety allowance to 7.2%, then walk the calculation through step by step. Cure die dwell is the time reinforcement spends in the heated forming die reaching full cross-link, and it caps how fast a pultrusion line can safely run.

The inputs for this scenario

  • Linear feet of profile to cure: 120 units (held at the documented default)
  • Cure line speed through the die: 12 units / hr (held at the documented default)
  • Cure schedule safety allowance: 7.2 % (the input this scenario stresses; the baseline uses 10)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base cure die dwell time = required work รท processing rate.
  • Adjusted run time works out to 10.72 hr at these inputs, and this is the headline figure for the scenario.
  • Base run time works out to 10 hr at these inputs.
  • Allowance applied works out to 7.2 % at these inputs.
  • Process rate works out to 12 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where cure schedule safety allowance sits at 10% and the headline result is 11 hr, this scenario comes in 2.55% below the baseline at 10.72 hr.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to cure schedule safety allowance, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a steady cure line speed; die warm-up, mid-run speed changes, and off-spec restarts are only approximated by the flat allowance percentage.

Results at a glance

  • Adjusted run time: 10.72 hr (headline result)
  • Base run time: 10 hr
  • Allowance applied: 7.2 %
  • Process rate: 12 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Cure Die Dwell calculator, set cure schedule safety allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.