Rubber, Tires, Foam & Elastomer Manufacturing worked example

Foam Yield at 68% target first-pass foam yield rate: a worked example

Suppose target first-pass foam yield rate falls to 68%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate foam yield for rubber, tires, foam and elastomer manufacturing using production-ready inputs so teams can track KPI performance and decide whether corrective action is needed.

The inputs for this scenario

  • Conforming foam buns (or blocks) passing inspection: 8 count (held at the documented default)
  • Total foam buns run in the lot: 250 count (held at the documented default)
  • Target first-pass foam yield rate: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Foam yield rate = foam yield count ÷ total foam yield population × 100.
  • Foam yield rate works out to 3.2 % at these inputs, and this is the headline figure for the scenario.
  • Foam yield gap to target works out to 64.8 points at these inputs.
  • Foam yield count works out to 8 count at these inputs.
  • Total foam yield population works out to 250 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target first-pass foam yield rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • It computes the percentage of foam units that passed inspection out of the total run, and the point gap between that rate and your target. 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

  • Foam yield rate: 3.2 % (headline result)
  • Foam yield gap to target: 64.8 points
  • Foam yield count: 8 count
  • Total foam yield population: 250 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Foam Yield calculator, set target first-pass foam yield rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.