Application Areas » Other X-ray Applications » Cork X-ray Inspection

CORK -
X-RAY INSPECTION

Online cork X-ray inspection systems

X-ray technology has been used for years for cork X-ray inspection, and process & product control of cork products . Our new and innovative X-ray systems push the cork X-ray inspection level to the real need – to detect what is critical for process & product quality inspection.

From the information contained in the X-ray image, one can clearly differentiate a hole, a cavity, a high-density inclusion (a hard area), etc. It is clear from this investigation that X-ray inspection is capable of identifying hard areas and hole cave areas of the cork discs. With image analysis software the decision making can be accomplished automatically and fast.

X-ray inspection of cork products - product & process control 3

THE VALUE OF LOW-ENERGY X-RAY TECHNOLOGY:

  • reducing loss and making best use of raw materials
  • better product classification and a better product price
  • avoiding customer complaints
  • a robust, reliable, and safe inspection technology
  • hygienic design guidelines

The X-ray inspection is deemed important since it can disclose the critical defects that are generally
only perceived at the bottling stage, or after long-term storage of expensive wine.

OBJECTIVE

The quality of cork discs for wine sealing must be carefully controlled. Presently, this is done by vision technology yet low energy X-rays are much more promising in as much as the very critical defects, hard areas in the cork can be detected high a high degree of confidence. It is thus important to confirm that X-ray technology is applicable for cork disc quality inspection and to verify that the defects considered critical can be detected.

cork inspection xray
X-ray inspection of cork products - product & process control 2

SOLUTION

Hence, from the information contained in the X-ray image, one can clearly differentiate a hole, a cavity, a high-density inclusion (a hard area), etc. It is clear from this investigation that X-ray inspection is capable of identifying hard areas and hole cave areas of the cork discs. With image analysis software the decision making can be accomplished automatically and fast.

Shallow cracks and caves as e.g. observed in samples C2 and V2 may need to be treated in a special way if they are considered as defects. This may include setting a different grey level for the threshold. Altogether, image processing techniques must be further developed taking into account specific sorting and classification thresholds. For this, it is important that the user provides the criteria, e.g. concerning the dimensions, the hardness (density) deviations acceptable and the position of defects relative to how critical they may be for the cork disc quality.

The systems offered by InnospeXion for this application are adequate for in-line usage, at production velocities of 30 m/min. With a standard system conveyor width, between 40 and 100 cork discs can be inspected per second. At this velocity, the demands for the timing control are tough, and the soring mechanism must be very well engineered.

The X-ray inspection is deemed important since it can disclose the critical defects that are generally only perceived at the bottling stage, or after long-term storage of expensive wine.

CORK X-RAY INSPECTION
ADDITIONAL READING

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