Bioplastics & Biomaterials Processing worked example

Biomaterial Yield at 68% target material yield: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop target material yield to 68%, then walk the calculation through step by step. Calculate good biomaterial output as a percentage of total resin, compound, film, sheet, or molded part input, with a target yield for production review.

The inputs for this scenario

  • Good biomaterial output: 4,620 kg or lb (held at the documented default)
  • Total biomaterial input: 5,100 kg or lb (held at the documented default)
  • Target material yield: 68 % (the input this scenario stresses; the baseline uses 94)

Working through the calculation

  • The calculation starts from the formula this tool documents: Biomaterial yield = good biomaterial output ÷ total biomaterial input × 100.
  • Biomaterial yield works out to 90.59 % material yield at these inputs, and this is the headline figure for the scenario.
  • Material yield gap to target works out to -22.59 points at these inputs.
  • Good biomaterial output works out to 4,620 kg or lb at these inputs.
  • Total biomaterial input works out to 5,100 kg or lb at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target material yield sits at 94% and the headline result is 90.59 % material yield, this scenario lands almost exactly on the baseline at 90.59 % material yield.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to target material yield, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It's a simple mass ratio and doesn't distinguish recoverable scrap from permanent loss, nor weight changes from moisture or additives, so define input and output consistently.

Results at a glance

  • Biomaterial yield: 90.59 % material yield (headline result)
  • Material yield gap to target: -22.59 points
  • Good biomaterial output: 4,620 kg or lb
  • Total biomaterial input: 5,100 kg or lb

Run it with your numbers

  • To rerun this with your own numbers, open the live Biomaterial Yield calculator, set target material yield to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.