How much automation does a production line really need?

In the last investment cycle, automation has become the main topic of almost every quotation: around 45% of producers in our industry are adopting servo-driven technologies for precision in elastic placement and core construction, and more than a third are introducing monitoring dashboards with predictive maintenance. These are the right directions. The point is that a converting plant is not judged by how much technology it contains, but by how much of that technology is still actually in use twelve months after start-up.

Where automation really pays

There are points where independent drives and electronic control solve real problems. The first is repeatability: settings that are stored and recalled, instead of being found again by hand every time. The second, which follows from it, is the size change — the real hidden cost for anyone serving a multi-format market. The third is diagnostics: knowing why the line stopped, and not just that it stopped, completely changes the learning curve of a new team.

Where it becomes over-engineering

The other side is just as concrete. Every additional axis is one more component to keep in stock, to power and to be able to diagnose. On plants with many automated functions the same pattern often repeats itself: the functions nobody has learned to use get worked around, and automation turns into the reason you have to call an outside technician for a job a shift leader could have done alone. In markets where lead times are not European ones, this is not a detail: it is the difference between two days and two weeks of downtime.

Two operators is not a limit, it is a design constraint

Our lines are designed to be run by two operators. That is not a spec sheet figure: it is a constraint that decides how much interface a line needs, how accessible the adjustments have to be and which interventions must stay mechanical and immediate. Automating what the operator must be able to check by hand anyway rarely helps; automating what the operator cannot repeat identically almost always does.

Technology positioning follows industrial positioning

We deliberately sit in a middle band: medium speed, reliability, competitive investment — between low-cost builders and high-end suppliers. Our choices on automation follow the same logic. We do not chase the richest possible configuration, nor the most spartan one: we introduce automation where it reduces variability and format change time, and we leave it out where it would only add components to maintain. All lines remain compliant with Directive 2006/42/EC, which imposes a precise discipline on automation in terms of safety and access.

The real test comes in year two

Commissioning says almost nothing about automation: during the test everything works, and the machine builder is in the room. The verification comes in year two, when the team has changed, the spare parts stock has settled and a fast answer is needed. That is why we assess every automated function also in terms of spare parts, training and remote support, and not only of declared performance.

If you are comparing configurations with different levels of automation, tell us how many formats you produce, how many size changes you run per week and what technical structure you work with: that is where it becomes clear which automation gives your investment back and which one ties it up.