Mattress, Bedding & Foam Product Assembly worked example

SKU Changeover Time at 17% buffer allowance: a worked example

This scenario runs the sku changeover time calculation on the strong side: 17% buffer allowance, with every other input held at its documented default. Use this when evaluating production scheduling strategies, comparing batch sizes, or justifying SMED (quick changeover) improvements on tape edge, quilting, or compression stations.

The inputs for this scenario

  • Changeovers per shift: 6 changeovers (unchanged)
  • Average changeover time: 12 min / changeover (unchanged)
  • Buffer allowance: 17 % (raised for this scenario; the documented default is 15)

Working through the calculation

  • Applying the documented formula (Base changeover time = changeovers per shift × average changeover time) to the inputs above produces each figure below.
  • At this operating point the engine returns 0.59 min for adjusted run time, the number this scenario is built around.
  • At this operating point the engine returns 0.5 min for base run time.
  • At this operating point the engine returns 17 % for allowance applied.
  • At this operating point the engine returns 12 pieces / min for process rate.

How this compares with the baseline

  • Against the tool's baseline example, where buffer allowance sits at 15% and the headline result is 0.57 min, this scenario comes in 1.74% above the baseline at 0.59 min.
  • Use it when planning a daily build schedule, sequencing SKUs to batch similar models, or building the case for quick-change tooling on tape-edge and quilting stations. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Adjusted run time: 0.59 min (headline result)
  • Base run time: 0.5 min
  • Allowance applied: 17 %
  • Process rate: 12 pieces / min

Run it with your numbers

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

Last reviewed 2026-05-12.