Blow Molding & Hollow Plastic Products worked example

Trim Recovery Value at 99% recovery capture share: a worked example

What does the result look like when recovery capture share reaches 99%? The full calculation is worked below with real intermediate numbers. a blow molding operation needs to value recoverable trim, flash, tail, or neck scrap from a run or shift

The inputs for this scenario

  • Recoverable trim and flash weight: 950 lb or kg (unchanged)
  • Recovered resin value: 0.42 $ / lb or kg (unchanged)
  • Recovery capture share: 99 % (raised for this scenario; the documented default is 88)
  • Fixed grinding and handling cost: 120 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Gross captured trim value = recoverable trim and flash weight × recovered resin value × recovery capture share) to the inputs above produces each figure below.
  • At this operating point the engine returns 515 $ for net trim recovery value, the number this scenario is built around.
  • At this operating point the engine returns 0.54 $ / lb or kg for recovered resin value.
  • At this operating point the engine returns 395 $ for gross captured trim value.
  • At this operating point the engine returns 120 $ for fixed grinding and handling cost.

How this compares with the baseline

  • Against the tool's baseline example, where recovery capture share sits at 88% and the headline result is 471 $, this scenario comes in 9.32% above the baseline at 515 $.
  • A figure at this level is achievable when recovery capture share is genuinely sustained, not just peaked for a shift. It treats resin value as the price of virgin-equivalent material; in reality regrind often carries a property haircut, so the usable value per pound can be lower than the market resin price.

Results at a glance

  • Net trim recovery value: 515 $ (headline result)
  • Recovered resin value: 0.54 $ / lb or kg
  • Gross captured trim value: 395 $
  • Fixed grinding and handling cost: 120 $

Run it with your numbers

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

Last reviewed 2026-05-12.