Blow Molding & Hollow Plastic Products worked example

Line Output per Shift at 65% line efficiency: a worked example

Suppose line efficiency falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate effective blow molding line output per hour or shift from good containers produced, runtime, and line efficiency.

The inputs for this scenario

  • Good containers produced: 42,000 containers (held at the documented default)
  • Producing runtime: 12 hr (held at the documented default)
  • Line efficiency: 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw line output = good containers produced รท producing runtime.
  • Effective line output works out to 2,275 containers / hr at these inputs, and this is the headline figure for the scenario.
  • Raw line output works out to 3,500 containers / hr at these inputs.
  • Line efficiency works out to 65 % at these inputs.
  • Producing runtime works out to 12 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where line efficiency sits at 90% and the headline result is 3,150 containers / hr, this scenario comes in 27.78% below the baseline at 2,275 containers / hr.
  • It divides good containers by producing runtime to get raw output per hour, then multiplies by line efficiency to give the effective, schedulable output rate. 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 line output: 2,275 containers / hr (headline result)
  • Raw line output: 3,500 containers / hr
  • Line efficiency: 65 %
  • Producing runtime: 12 hr

Run it with your numbers

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

Last reviewed 2026-05-12.