Glass Container & Bottle Manufacturing worked example
Annealing Lehr Capacity at 99% annealing lehr uptime: a worked example
Push annealing lehr uptime up to 99% and the picture changes. This example computes every intermediate figure at that operating point. Use it when forming output, lehr speed, belt loading, thermal profile, or cold-end flow must be checked before committing bottle or jar production by shift.
The inputs for this scenario
- Containers per lehr cycle: 850 containers / cycle (unchanged)
- Available lehr cycles: 22 cycles (unchanged)
- Annealing lehr uptime: 99 % (raised for this scenario; the documented default is 94)
- Post-lehr first-pass yield: 98 % (unchanged)
Working through the calculation
- Applying the documented formula (Gross annealing lehr capacity = containers per lehr cycle × available lehr cycles) to the inputs above produces each figure below.
- At this operating point the engine returns 18,143 containers for good annealed container capacity, the number this scenario is built around.
- At this operating point the engine returns 18,700 containers for gross lehr container capacity.
- At this operating point the engine returns 187 containers for annealing lehr uptime loss.
- At this operating point the engine returns 370 containers for post-lehr yield loss.
How this compares with the baseline
- Against the tool's baseline example, where annealing lehr uptime sits at 94% and the headline result is 17,226 containers, this scenario comes in 5.32% above the baseline at 18,143 containers.
- It computes good annealed container capacity as containers per cycle times available cycles, derated by lehr uptime and post-lehr first-pass yield. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.
Results at a glance
- Good annealed container capacity: 18,143 containers (headline result)
- Gross lehr container capacity: 18,700 containers
- Annealing lehr uptime loss: 187 containers
- Post-lehr yield loss: 370 containers
Run it with your numbers
- Every input above is editable in the live Annealing Lehr Capacity calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.