The Theory of Constraints says every system has exactly one bottleneck, and improvements anywhere except the bottleneck are wasted. In flexo plants, the bottleneck is almost always the mounting room — and almost no plant treats it that way.
How to identify your real constraint
If your presses are sitting idle waiting for mounted sleeves, the mounting room is your constraint. If your mounting room is sitting idle waiting for the press, the press is your constraint.
In our experience walking through plants, the first scenario is at least 5x more common than the second. Press operators are usually waiting on the room. They just don't always say so out loud.
What changes when you treat mounting as the constraint
Capital investment priorities change. Instead of buying more press capacity you cannot fully use, you invest in workflow changes that let you fully use the press capacity you have. The ROI is faster and the cost is lower.
Hiring priorities change. Instead of trying to add press operators, you invest in mounting room throughput so the operators you have can support more press hours.
The diagnostic question
"How often does a press wait for a mounted sleeve?" If the honest answer is "more than once a week," the mounting room is your constraint and that is where investment should go first.
Most plants ignore this and buy more presses. The new presses then sit idle for the same reason the old presses did.
The Flexopodz Team
Purpose-built mounting room solutions for flexographic printing.