Plastics Extrusion - Pipe, Film & Profile worked example
Finished Roll/Coil Capacity at 65% winder availability: a worked example
Suppose winder availability 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 finished roll or coil output from units per winding cycle, available cycles, uptime, and finished goods yield.
The inputs for this scenario
- Finished rolls or coils per winding cycle: 2 rolls or coils / cycle (held at the documented default)
- Available winding cycles in period: 180 cycles (held at the documented default)
- Winder availability: 65 % (the input this scenario stresses; the baseline uses 90)
- Finished-goods yield after winding: 96 % (held at the documented default)
Working through the calculation
- The calculation starts from the formula this tool documents: Gross capacity = finished rolls or coils per cycle × available winding cycles.
- Good roll or coil capacity works out to 225 rolls or coils at these inputs, and this is the headline figure for the scenario.
- Gross roll or coil capacity works out to 360 rolls or coils at these inputs.
- Winder uptime loss works out to 126 rolls or coils at these inputs.
- Finished goods yield loss works out to 9.36 rolls or coils at these inputs.
How this compares with the baseline
- Against the tool's baseline example, where winder availability sits at 90% and the headline result is 311 rolls or coils, this scenario comes in 27.78% below the baseline at 225 rolls or coils.
- It computes good finished roll or coil capacity as rolls-per-cycle times available cycles, discounted by winder uptime and finished-goods yield. 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
- Good roll or coil capacity: 225 rolls or coils (headline result)
- Gross roll or coil capacity: 360 rolls or coils
- Winder uptime loss: 126 rolls or coils
- Finished goods yield loss: 9.36 rolls or coils
Run it with your numbers
- To rerun this with your own numbers, open the live Finished Roll/Coil Capacity calculator, set winder availability to your actual value, and adjust the remaining inputs to match your operation.
Last reviewed 2026-05-12.