When a view from above is no longer enough

How sideshooter X-ray inspection systems are setting new standards in quality control.

The conveyor belt runs at full speed. Hour after hour, thousands of packages leave the line – filled to the brim, tightly sealed, ready for the market. Yet tension is mounting in the quality assurance department of a major food manufacturer. The X-ray inspection systems in use are increasingly delivering ambiguous results. False alarms are becoming more frequent, and critical areas remain blurred in the X-ray image.

The reason: tall, densely packed packages with complex geometries. What appears stable and manageable from the outside eludes reliable inspection on the inside. Traditional top-down X-ray inspections are reaching their physical limits – precisely where product safety tolerates no weaknesses.

The challenge of traditional top-shooter inspections

In many production environments, top-shooter X-ray systems are the established standard. They inspect products vertically from top to bottom and deliver reliable results for flat, homogeneous products.

However, the penetration path of the top-down X-rays for tall, upright containers is significantly extended. Product overlaps, multi-layered materials and dense contents lead to loss of contrast and blind spots – particularly in the base and sidewall areas. The reliable detection of foreign bodies such as glass, metal, stone or dense plastics is becoming increasingly difficult.

At the same time, expectations for in-line quality checks are rising. Monitoring fill level, checks on product completeness and packaging integrity should take place directly within the production process – without compromising speed or efficiency.

Side view instead of top view: the principle of sideshooter inspection

In applications where packaging geometry limits the effectiveness of top-down X-ray inspection, sideshooter X-ray inspectionoffers precise and reliable alternatives. Instead of scanning the product from above, the inspection takes place horizontally from the side. The effective materials thickness in the X-ray beam direction is reduced, improving detection performance.

This inspection geometry reduces overlap, improves contrast and provides a clear view of critical areas of the product and packaging. Even with dense or complex materials, the resulting X-ray images are more stable and easier to evaluate.

Minebea Intec, a leading manufacturer of weighing and inspection solutions, has consistently developed this technology and built up a structured portfolio of sideshooter X-ray inspection systems. They are designed to reliably inspect precisely where the view from above reaches its limits.

How it works: precise inspection in real time

Sideshooter systems continuously scan the product from the side, whilst powerful detectors and intelligent image processing software analyse the captured data in real time. Differences in density, foreign bodies and quality deviations are reliably detected – even inside complex packaging.

Depending on requirements, different inspection concepts are used: from single-beam configurations for standard applications to multi-view or double-beam technologies, which further reduce blind spots and specifically increase detection reliability. The result is stable, reproducible inspection, even at high line speeds and in 24/7 operation.

A portfolio for every application – without unnecessary complexity

Minebea Intec’s sideshooter portfolio is clearly structured and covers a wide range of applications:

• Entry-level models such as the Dylight S offer a compact, space-saving solution for smaller and lighter packaging, such as pouches (e.g. spices or snacks), tube and flow packs, lightweight folding cartons, portion packs (e.g. coffee, tea or sugar) and small plastic or paper packs, and can be easily integrated into existing lines.
• Advanced systems such as Dymond S and Dymond DSV combine reliable foreign body detection with advanced in-line quality checks, for example for level or completeness checks on bottles (e.g. drinks or liquid products), jars, cans, tubular pouches (e.g. sauces or dairy products), carton packaging, as well as tray or multipack solutions.
• High-end systems such as Dymond D are designed for particularly dense, complex or highly dynamic applications – for example, with glass filling, metal packaging or high throughput.

Common to all systems is hygienic design in accordance with current guidelines, low system complexity, and modern interfaces for transparency, traceability and process optimisation.

Practical application: stable processes instead of compromises

Back to the food manufacturer described at the start: by switching to a sideshooter X-ray inspection system, it became possible for the first time to reliably inspect all critical product areas. The number of false alarms fell significantly, through put remained consistently high, and the inspection data obtained could be used specifically for audits and process improvements.

Inspection once again became what it was meant to be: a stable component of the production line – not its limiting factor. Ultimately, one thing stands out above all else: safety – for production, the brand and the consumer.