Nonwoven Materials & Technical Textiles worked example

Production Ramp Planner at 99% expected calender and bonding line uptime: a worked example in nonwoven materials & technical textiles

What does the result look like when expected calender and bonding line uptime reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when production ramp planner in nonwoven materials and technical textiles is being asked to take on more work and you need to know if there is room.

The inputs for this scenario

  • Web meters per spunbond line cycle: 4 units / cycle (unchanged)
  • Scheduled line cycles in the ramp window: 480 cycles (unchanged)
  • Expected calender/bonding line uptime: 99 % (raised for this scenario; the documented default is 90)
  • Expected first-pass yield after slitting and inspection: 97 % (unchanged)

Working through the calculation

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

How this compares with the baseline

  • Against the tool's baseline example, where expected calender and bonding 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 expected calender and bonding line uptime is genuinely sustained, not just peaked for a shift. It assumes uptime and yield are independent steady-state averages; early-ramp lines with correlated losses (a web break that also scraps the roll) can deliver less than the model predicts.

Results at a glance

  • Good production ramp planner capacity: 1,844 units (headline result)
  • Gross production ramp planner capacity: 1,920 units
  • Production ramp planner downtime loss: 19.2 units
  • Production ramp planner yield loss: 57.02 units

Run it with your numbers

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

Last reviewed 2026-05-12.