Application Areas » Other X-ray Applications » Can Seam X-ray Inspection

CAN SEAM -
X-RAY INSPECTION

Can seam quality control parameters non-destructively assessed by X-ray imaging and quantification

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

InnospeXion has developed an off-line inspection technology to quantify the details of the seam at 360 degrees, with a precision better than 10 microns. Based on this experience, further development and end-user request, lead to a technology that can be used on-line to automatically validate the can closures on-line, at a rate per system up to 180 cans per minute. The ON-LINE CAN SEAM SCANNER is unique worldwide and is based on extremely fast X-ray imaging (up to 300 frames per second), integration of advanced and fast sensors, and a newly developed geometric imaging principle.

X-ray inspection of can seam – product & process control 2

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

Our system operates with a false reject rate of less than 0.15% at a 95% probability of detection. In many cases, the system allows simultaneous control of the can content, both in terms of quantity, distribution
and possible foreign objects within the product.

OBJECTIVE

Aluminum and steel cans are still among the most preferred for packaging perishable food. After autoclaving, the product can usually stay for many years, and metal cans are known to be both reusable and safe. Value creation in detecting errors lies primarily in ensuring the control of production instantly and to ensure that error-packaged food does not reach the market.

A defective can in a batch can cause rejection of an entire delivery, which has obvious economical downside. At worst, a defective can may reach the end user, where the intake may cause fatal poisoning. Therefore, the need for continuous monitoring of the can seam is significant, especially for canned fish products.

X-ray inspection of can seam – product & process control 3
can seam inspection xray

SOLUTION

The primary goal is the detection of seam defects, but also other can errors and deformities that affect the product’s appearance, durability and ruggedness. Depending on speed, can size, and can format, defects down to 0.25 mm are detected and automatically discarded. This is of course much reduced relative to the off-line system performance, but the key requirement for the online technology is the detection of the faulty seams. The system design is controlled by a PLC, this ensures that results can be used as part of process control, and not just as a final discard.

The system operates with a false reject rate of less than 0.15% at a 95% probability of detection. In many cases, the system allows simultaneous control of the can content, both in terms of quantity, distribution and possible foreign objects within the product.

The ON-LINE CAN SEAM SCANNER responds to a specific and essential need of canned food manufacturing companies. The technology is introduced to ensure productivity competitiveness and profitability through strong savings and better control of product quality. The system helps to minimize rejection significantly because of the on-line error detection capability. The system replaces final inspection which is performed by humans and thus relieves the need of repetitive and hard human work, that in any case only in part can satisfy present quality requirements on food safety.

Danish Food Tech Group Member Food packaging integrity
Danish Export Association
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