Printing, Labels & Industrial Converting worked example

Web Waste at 65% expected web uptime: a worked example

This worked example runs the web waste numbers for a tougher week than the baseline: 65% expected web uptime instead of the typical 90%. Estimate web waste for printing, labels and industrial converting using production-ready inputs so teams can confirm whether capacity can cover demand before committing the schedule.

The inputs for this scenario

  • Good units per press cycle: 4 units / cycle (held at the documented default)
  • Available press cycles in the window: 480 cycles (held at the documented default)
  • Expected web uptime: 65 % (the input this scenario stresses; the baseline uses 90)
  • Expected first-pass yield: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross web waste capacity = web waste output per cycle × available web waste cycles.
  • Good web waste capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross web waste capacity works out to 1,920 units at these inputs.
  • Web waste downtime loss works out to 672 units at these inputs.
  • Web waste yield loss works out to 37.44 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expected web uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 27.78% below the baseline at 1,211 units.
  • Use it when you need to see whether stops or scrap are the bigger drag on a web line's good output. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Good web waste capacity: 1,211 units (headline result)
  • Gross web waste capacity: 1,920 units
  • Web waste downtime loss: 672 units
  • Web waste yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Web Waste calculator, set expected web uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.