How do you calculate a capacity gap?

First find gross capacity as output per cycle times available cycles - 4 x 480 = 1,920 units. Then multiply by uptime and first-pass yield: 1,920 x 0.90 x 0.97 = 1,676 good units. The gap from 1,920 to 1,676 is your capacity loss.

What is a good first-pass yield for film coating?

Mature barrier and membrane lines often run 95-99% first-pass yield; the 97% here costs about 52 units. Below 95% on a high-value film, yield loss usually outweighs downtime as your biggest recoverable capacity.

Downtime loss vs yield loss - which should I fix first?

Compare the two outputs. Here downtime removes 192 units and yield removes about 52, so uptime is the larger prize on this line. Always attack the bigger number first, since a point of uptime and a point of yield are not worth the same.

Why is good capacity lower than gross capacity?

Gross capacity of 1,920 assumes the line never stops and nothing scraps. Real lines lose to changeovers and web breaks (uptime) and to coat-weight and defect rejects (yield), leaving 1,676 good units you can actually ship.

How do I raise good capacity without buying equipment?

Multiply out the levers: lifting uptime from 90% toward 95% or yield from 97% toward 99% both add units against the same 1,920 gross. On this line the uptime lever is larger because downtime is stealing more units.

Should I promise gross or good capacity to customers?

Promise good capacity. Committing to 1,920 when the line reliably makes 1,676 builds a structural shortfall into every order. Quote against the derated number and hold gross as stretch potential.

Specialty Films, Membranes & Barrier Materials calculator

Capacity Gap Calculator

A capacity gap analysis converts a coating or laminating line's theoretical output into the good, sellable units you can actually promise after uptime and yield losses. On specialty film and membrane lines, gross capacity from cycle count rarely survives contact with changeovers, web breaks, and first-pass yield hits from coat-weight or defect rejects. Planners and operations managers use this calculation to size realistic commitments, expose the gap between nameplate and reality, and quantify exactly how many units downtime versus yield are stealing. It reframes vague talk of a capacity shortfall into hard unit losses you can prioritize against.

What this calculator does

Estimate capacity gap for specialty films, membranes and barrier materials using production-ready inputs so teams can confirm whether capacity can cover demand before committing the schedule.
Use it when capacity gap in specialty films, membranes and barrier materials is being asked to take on more work and you need to know if there is room.
It computes good sellable capacity from output per cycle and available cycles, then derates by uptime and first-pass yield, and splits the loss into downtime units and yield units.

Formula used

Gross capacity gap capacity = capacity gap output per cycle × available capacity gap cycles
Good capacity gap capacity = gross capacity × expected capacity gap uptime × expected capacity gap first-pass yield

Inputs explained

Good film output per coating cycle:
Available coating cycles:
Expected line uptime:
Expected first-pass yield:

How to use the result

Use it during capacity planning, order-promising, or improvement targeting to see how much real output a line can deliver.
It assumes uptime and yield are independent multipliers and uses steady-state averages, so it will not reflect a specific bad shift or the interaction between a slow line and rising scrap.

Current U.S. benchmarks

The producer price index for plastic resins and materials stands at 319.371 (BLS, May 2026), up 19.5% from a year earlier. Quotes priced off last quarter's material cost miss this move.
Global copper trades at $13,484 per tonne (IMF via FRED, May 2026), up 41.5% in a year, and U.S. industrial electricity averages 8.66 cents per kWh. Both feed electrified-hardware unit economics.

Common questions

How do you calculate a capacity gap? First find gross capacity as output per cycle times available cycles - 4 x 480 = 1,920 units. Then multiply by uptime and first-pass yield: 1,920 x 0.90 x 0.97 = 1,676 good units. The gap from 1,920 to 1,676 is your capacity loss.
What is a good first-pass yield for film coating? Mature barrier and membrane lines often run 95-99% first-pass yield; the 97% here costs about 52 units. Below 95% on a high-value film, yield loss usually outweighs downtime as your biggest recoverable capacity.
Downtime loss vs yield loss - which should I fix first? Compare the two outputs. Here downtime removes 192 units and yield removes about 52, so uptime is the larger prize on this line. Always attack the bigger number first, since a point of uptime and a point of yield are not worth the same.
Why is good capacity lower than gross capacity? Gross capacity of 1,920 assumes the line never stops and nothing scraps. Real lines lose to changeovers and web breaks (uptime) and to coat-weight and defect rejects (yield), leaving 1,676 good units you can actually ship.
How do I raise good capacity without buying equipment? Multiply out the levers: lifting uptime from 90% toward 95% or yield from 97% toward 99% both add units against the same 1,920 gross. On this line the uptime lever is larger because downtime is stealing more units.

Last reviewed 2026-05-12.