Blow Molding & Hollow Plastic Products worked example

Cavitation Output at 99% cavitation efficiency: a worked example

What does the result look like when cavitation efficiency reaches 99%? The full calculation is worked below with real intermediate numbers. a production team needs to measure actual output from a multi-cavity bottle, container, or preform mold

The inputs for this scenario

  • Good containers produced: 28,800 containers (unchanged)
  • Measured mold runtime: 8 hr (unchanged)
  • Cavitation efficiency: 99 % (raised for this scenario; the documented default is 92)

Working through the calculation

  • Applying the documented formula (Raw mold output = good containers produced รท measured mold runtime) to the inputs above produces each figure below.
  • At this operating point the engine returns 3,564 containers / hr for effective cavitation output, the number this scenario is built around.
  • At this operating point the engine returns 3,600 containers / hr for raw mold output.
  • At this operating point the engine returns 99 % for cavitation efficiency.
  • At this operating point the engine returns 8 hr for measured mold runtime.

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 7.61% above the baseline at 3,564 containers / hr.
  • A figure at this level is achievable when cavitation efficiency is genuinely sustained, not just peaked for a shift. Efficiency here is a single blended percentage; it tells you the line is losing output but not whether the cause is a dead cavity, slow cycle, or rejects, so it flags the problem without diagnosing it.

Results at a glance

  • Effective cavitation output: 3,564 containers / hr (headline result)
  • Raw mold output: 3,600 containers / hr
  • Cavitation efficiency: 99 %
  • Measured mold runtime: 8 hr

Run it with your numbers

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

Last reviewed 2026-05-12.