Ishida IX-EN X-ray inspection system comes as a highly effective solution that can be used to inspect potential metal contaminants in products packed in aluminium trays, which under normal circumstances becomes difficult to detect using a traditional metal detector. Further, the X-ray machine’s ability to spot a variety of other foreign bodies, including glass and dense plastic means that the machine will now be used for the inspection of products packed in other materials as well.

Another notable benefit of the IX-EN is its far greater sensitivity as compared to a traditional metal detector. With the Ishida X-Ray, it is possible to detect fragments of much smaller dimensions as compared to the traditional metal detector and this ensures greater confidence in the safety of the products. The ability to detect both metal and non-metal foreign bodies down to very small dimensions has practically allowed for elimination of complaints of this nature and has reinforced the consumer confidence in the quality of products.

IX-EN-4093 X-Ray Machine
IX-EN-4093 X-Ray Machine

X-Ray machines can be used to achieve superior results, as compared to the current metal detector systems. X-ray technology works on the principle of producing X-ray wavelengths from a generator tube, which traverse through the product to be inspected onto a line sensor. The line sensor system converts the incident X-rays into a greyscale image that is further processed and ultimately displayed on the screen. The darker the area of the image, the higher the density and in this way, foreign bodies which are denser than the product can be detected.

This ability allows an X-Ray system to see a host of additional non-metallic foreign bodies, including rubber, stones, shell and bones. In addition, Ishida X-Ray Inspection Systems are equipped to identify packaging defects, missing product in packs or damaged products, ensuring that product presentation and quality are consistent throughout food production.

Key to this capability is Ishida’s unique self-learning Genetic Algorithm (GA) technology. This focuses the X-Ray machine to find the difficult to detect contaminants with a high degree of accuracy even at high throughput rates, using image data analysis over several trial runs. As it is common in food production for similar contamination problems to recur, data logging helps to build up a more precise calibration protocol with each trial. This enables permanent or recurring defects to be easily identified during the inspection process.

The excellent sensitivity of the Ishida X-Ray means it can detect impurities down to 0.3mm in size, while the place of contamination can also be accurately pinpointed.

At Centralrest, the IX-EN is in operation for around six hours each day. The company reports that it is performing very reliably and that the system is extremely intuitive and easy to operate with fast changeovers between products.

Table 1 - The Overview

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About the Author:
Saikat Ghosh
Product Manager, Ishida India Private Limited
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