Pultrusion & Continuous Composite Profiles worked example

Resin Bath Consumption at 61% resin bath transfer efficiency: a worked example

Suppose resin bath transfer efficiency falls to 61%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Resin bath consumption is the volume of catalyzed resin a pultrusion line draws to fully wet out the reinforcement for a run.

The inputs for this scenario

  • Linear feet of profile to wet out: 500 units (held at the documented default)
  • Resin uptake per linear foot: 0.08 units (held at the documented default)
  • Resin bath transfer efficiency: 61 % (the input this scenario stresses; the baseline uses 85)

Working through the calculation

  • The calculation starts from the formula this tool documents: Required resin bath consumption = covered amount × use per unit ÷ transfer efficiency.
  • Required quantity works out to 65.57 units at these inputs, and this is the headline figure for the scenario.
  • Theoretical amount works out to 40 units at these inputs.
  • Loss allowance works out to 25.57 units at these inputs.
  • Efficiency works out to 61 % at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where resin bath transfer efficiency sits at 85% and the headline result is 47.06 units, this scenario comes in 39.34% above the baseline at 65.57 units.
  • It computes the catalyzed resin you must mix for a run from profile length, resin uptake per foot, and bath transfer efficiency, and reports the loss allowance. 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

  • Required quantity: 65.57 units (headline result)
  • Theoretical amount: 40 units
  • Loss allowance: 25.57 units
  • Efficiency: 61 %

Run it with your numbers

  • To rerun this with your own numbers, open the live Resin Bath Consumption calculator, set resin bath transfer efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.