Boosting efficiency rather than just cutting costs

Why weighing and inspection technologies are becoming a crucial lever for production managers today.

The line is running steadily, the cycle times are on target and production is running smoothly – yet the margin achieved is still behind expectations. Only a closer look at the process data reveals the cause: minimal packages being overfilled, unnecessary rejections and minor inefficiencies that go unnoticed for a long time during operation – all of which have a direct impact on profitability.

“Today, efficiency is no longer achieved at the end of production, but within the process itself. Companies that do not make consistent use of their data often miss out on potential that is not even visible at first glance,” explains Mengqi Liang, Product Manager at Minebea Intec, a world-leading manufacturer of weighing and inspection technologies. “This shifts the focus for production managers. It is no longer just about reducing costs, but about systematically identifying and controlling factors causing losses on the production line.”

Weighing and inspection technologies play a key role in this: they provide the data foundation whilst also intervening directly in the process.

Material efficiency starts at the gram level

An often underestimated cost factor in production is the systematic overfilling of products, known as ‘give-away’. To reliably avoid underfilling, filling processes are often set conservatively – with the result that more material is continuously used than is necessary. Particularly in high-volume production environments, this becomes a measurable cost factor: even a few grams of being overfilled per unit can add up to several tonnes of additional raw material usage over the course of a year.

This is where in motion checkweighers come into play, weighing products directly within the process at high speed. More crucial than the actual weight measurement is the continuous feedback: deviations are detected in real time and transmitted to upstream dosing or filling systems. This transforms the weighing process from a mere monitoring tool into an active control element within the process. The result is more precise material usage combined with stable process reliability – a key driver of efficiency, particularly in the face of rising raw material prices.

Transparent processes as the basis for increasing OEE

Alongside material efficiency, data-driven production control is gaining in importance. Weighing and inspection systems are increasingly functioning as sensors along the production line, continuously supplying valid process data. This data forms the basis for a well-founded analysis of Overall Equipment Effectiveness (OEE).

Industry experience shows efficiency gains in the double-digit percentage range. In individual cases, improvements of up to 15 per cent have been reported, particularly when production data is consistently utilised and integrated into process control. The key added value lies in the availability of real-time information: process deviations are detected at an early stage, causes are precisely identified and corrective measures are implemented immediately.

Production thus evolves from reactive fault-finding to proactive, data-driven process management. “The real added value arises when weighing and inspection data are not viewed in isolation, but are integrated into process control. Only then can efficiency potential be systematically realised,” emphasises Liang.

Integrated inspection boosts throughput

In addition to material savings and data availability, the structural efficiency of the production line also plays a key role. Modern inspection solutions follow an integrated approach in which multiple inspection technologies are combined within a single system. Examples of this include combined solutions such as the Flexus^® Combi checkweigher from Minebea Intec.

The key advantage lies in the integration: there is no need for separate inspection stations, additional conveyor systems or interfaces. This simplifies the line layout and reduces potential sources of disruption. At the same time, the integrated solution enables synchronised inspection of every single product without requiring additional handling or time. The product flow remains constant whilst weight checking and foreign body detection take place in parallel. Efficiency here is achieved not through faster individual checks, but through a more stable line with lower complexity.

The influence of the inspection position on reject rates

As well as selecting the right technologies, their position within the process is also crucial to the level of efficiency. The key factor here is not whether inspection takes place as early as possible or as late as possible, but rather the point at which defects can be detected in a way that makes economic sense. If a defect is detected too late, products will already have passed through several value-adding process steps – including material input, energy and machine time. At the same time, an unfavourably positioned inspection can lead to additional process costs without making optimal use of the benefits of defect detection.
The economically optimal inspection point is therefore where defects are reliably detected whilst keeping downstream costs to a minimum. The actual costs thus arise less from the defect itself than from the timing and location of its detection.

A practical example is provided by the food manufacturer Premier Foods at its Knighton site. There, the inspection strategy was switched from an upstream bulk material check to the inspection of packaged end products using a Dymond S X-ray inspection system from Minebea Intec. The advantage lay not in a ‘later’ inspection per se, but in the fact that the inspection was moved to a stage at which all relevant defect patterns are reliably detected, whilst at the same time only individual packages are affected. Instead of discarding large quantities of products, only individual products are now rejected – resulting in significantly less waste, reduced cleaning effort and savings of around £80,000 per year.

Efficiency through risk minimisation

Another key factor is the reduction of risks. Production defects or contamination not only lead to waste but can also result in product recalls, production stoppages or regulatory consequences. “Inspection systems such as metal detectors or X-ray technologies counteract these risks by identifying anomalies reliably and reproducibly,” says Liang. “The resulting process stability makes a decisive contribution to efficiency – not in terms of short-term savings, but as a safeguard against potentially high follow-on costs.”

A systems-based approach rather than a one-off solution

The effects described here are particularly effective when they work in tandem. Load cells, industrial scales, inspection systems and software solutions are increasingly forming integrated complete systems. What is crucial here is not the individual component, but the interconnection of the systems.

It is only the combination of precise measurement technology, intelligent data processing and seamless integration that makes it possible to systematically tap into efficiency potential during ongoing operations. In this context, suppliers such as Minebea Intec position themselves as system partners who deliver end-to-end solutions – from weighing and inspection through to process analysis.

Investments that pay for themselves in operation

The current market situation is forcing companies to rethink efficiency. It is no longer sufficient to view costs in isolation or to make isolated optimisations. What is crucial is the ability to understand processes holistically and to optimise them continuously.

Modern weighing and inspection technologies make a significant contribution to this: they reduce material losses, increase transparency, improve plant availability and minimise risks. As a result, they evolve from a quality control tool into a strategic building block for productivity, cost control and competitiveness.

For production managers, this leads to a clear conclusion: investing in high-quality systems is not purely a technical decision, but an economic one – with a direct impact on the efficiency of the entire production process.