Every plant tracks downtime. Almost no plant tracks it well. The difference between useful downtime data and worthless downtime data usually comes down to one thing: reason codes. Get the classification system right, and you'll know exactly where to invest for maximum uptime improvement. Get it wrong, and you'll have a graveyard of "Other" and "Miscellaneous" entries that tell you nothing.
The average manufacturer loses $260,000 per hour of unplanned downtime. That number comes from Aberdeen Group research, and it hasn't gotten better — if anything, the cost per hour has increased as production lines become more automated and interdependent. Yet most plants still track downtime with clipboards, Excel spreadsheets, and the occasional SCADA alarm log.
Every plastics manufacturer knows downtime. What most don't know is exactly how much it's costing them — or where those hours are actually going. A mold change that should take 45 minutes stretches to 90. A hydraulic seal failure on a 500-ton press takes out three shifts. A purging procedure that was supposed to be "quick" turns into a four-hour color change nightmare.
The difference between plastics shops running at 75% OEE and those hitting 85%+ isn't better machines — it's better downtime visibility. When you can categorize, measure, and analyze every minute of lost production, you stop guessing and start systematically eliminating waste.