Blow Molding & Hollow Plastic Products worked example

Cavitation Output at 66% cavitation efficiency: a worked example

Suppose cavitation efficiency falls to 66%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate effective bottle or container throughput from completed output, runtime, and cavitation efficiency for blow molding molds.

The inputs for this scenario

  • Good containers produced: 28,800 containers (held at the documented default)
  • Measured mold runtime: 8 hr (held at the documented default)
  • Cavitation efficiency: 66 % (the input this scenario stresses; the baseline uses 92)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw mold output = good containers produced รท measured mold runtime.
  • Effective cavitation output works out to 2,376 containers / hr at these inputs, and this is the headline figure for the scenario.
  • Raw mold output works out to 3,600 containers / hr at these inputs.
  • Cavitation efficiency works out to 66 % at these inputs.
  • Measured mold runtime works out to 8 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where cavitation efficiency sits at 92% and the headline result is 3,312 containers / hr, this scenario comes in 28.26% below the baseline at 2,376 containers / hr.
  • It divides good containers produced by the measured runtime to get a raw hourly rate, then scales that by a cavitation efficiency percentage to give the effective output per hour. 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

  • Effective cavitation output: 2,376 containers / hr (headline result)
  • Raw mold output: 3,600 containers / hr
  • Cavitation efficiency: 66 %
  • Measured mold runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Cavitation Output calculator, set cavitation efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.