PPE & Infection Control Products worked example

Mask Line Throughput at 99% mask line uptime: a worked example

What does the result look like when mask line uptime reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when mask line throughput in ppe and infection control products is being asked to take on more work and you need to know if there is room.

The inputs for this scenario

  • Masks produced per machine cycle: 4 units / cycle (unchanged)
  • Available production cycles per shift: 480 cycles (unchanged)
  • Mask line uptime (OEE availability): 99 % (raised for this scenario; the documented default is 90)
  • First-pass yield after weld and ear-loop inspection: 97 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross mask line throughput capacity = mask line throughput output per cycle × available mask line throughput cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,844 units for good mask line throughput capacity, the number this scenario is built around.
  • At this operating point the engine returns 1,920 units for gross mask line throughput capacity.
  • At this operating point the engine returns 19.2 units for mask line throughput downtime loss.
  • At this operating point the engine returns 57.02 units for mask line throughput yield loss.

How this compares with the baseline

  • Against the tool's baseline example, where mask line uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 10% above the baseline at 1,844 units.
  • A figure at this level is achievable when mask line uptime is genuinely sustained, not just peaked for a shift. It assumes uptime and yield are stable averages; a single web break, splice, or horn failure can swing actual output well below the calculated good capacity for that shift.

Results at a glance

  • Good mask line throughput capacity: 1,844 units (headline result)
  • Gross mask line throughput capacity: 1,920 units
  • Mask line throughput downtime loss: 19.2 units
  • Mask line throughput yield loss: 57.02 units

Run it with your numbers

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

Last reviewed 2026-05-12.