Specialty Films, Membranes & Barrier Materials worked example

Coating Weight Yield at 99% target coat-weight first-pass yield: a worked example

Push target coat-weight first-pass yield up to 99% and the picture changes. This example computes every intermediate figure at that operating point. Use it when coating weight yield in specialty films, membranes and barrier materials needs a clean rate and gap-to-target you can put on a tier board.

The inputs for this scenario

  • Rolls meeting coat-weight spec: 8 count (unchanged)
  • Total coated rolls sampled: 250 count (unchanged)
  • Target coat-weight first-pass yield: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

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

How this compares with the baseline

  • Against the tool's baseline example, where target coat-weight first-pass yield 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 coated rolls that met coat-weight specification and the point gap between that yield and your first-pass target. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

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

Run it with your numbers

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

Last reviewed 2026-05-12.