Rubber, Tires, Foam & Elastomer Manufacturing worked example

Foam Yield at 99% target first-pass foam yield rate: a worked example

This scenario runs the foam yield calculation on the strong side: 99% target first-pass foam yield rate, with every other input held at its documented default. Use it when foam yield in rubber, tires, foam and elastomer manufacturing needs a clean rate and gap-to-target you can put on a tier board.

The inputs for this scenario

  • Conforming foam buns (or blocks) passing inspection: 8 count (unchanged)
  • Total foam buns run in the lot: 250 count (unchanged)
  • Target first-pass foam yield rate: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (Foam yield rate = foam yield count ÷ total foam yield population × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 3.2 % for foam yield rate, the number this scenario is built around.
  • At this operating point the engine returns 95.8 points for foam yield gap to target.
  • At this operating point the engine returns 8 count for foam yield count.
  • At this operating point the engine returns 250 count for total foam yield population.

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 %.
  • Use it at the end of a pour run, a shift, or a lot to grade quality and to compare foam formulations, indices, or line settings against a benchmark. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Foam yield rate: 3.2 % (headline result)
  • Foam yield gap to target: 95.8 points
  • Foam yield count: 8 count
  • Total foam yield population: 250 count

Run it with your numbers

  • Every input above is editable in the live Foam Yield calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.