Heat image seal inspection for fresh quiches 

Our client produces a wide range of ready meals for the Dutch and Belgian market. Production takes place in a large-scale kitchen where the taste of the final dish is perceived as most important. The production process is closely monitored within an ESSC22000 quality mark where it is crucial that the quiche pack is reliably sealed.
seal inspection control power supply
Description case

Vision Partners has provided a customer-specific machine vison inspection system that can measure the thermal seal's heat profile. The seal inspection monitors various aspects of the thermal sealing process: 

  • No plastic cover sheet present 
  • Plastic cover film not sealed properly 
  • Plastic cover film partially absent 

The solution consists of a high-resolution thermal camera placed inside the sealing machine. Thermal image recording is triggered after which the Machine Vision software evaluates the thermal image with various algorithms. It then communicates with the emission mechanism so that the correct package,-after thermal rejection-, is removed. 

Thermal seal inspection on the production line 

Below is the image the operator sees. The software isolates the seal edge of both quiche packages and determines if the plastic cover film is correctly placed and sealed. In case of an incorrect seal, the upstream system is alerted after which the release can take place. 

Operator display

In addition, a logging feature has been implemented. Inspection results are displayed on a screen and faults are logged for reporting and following up on any customer inquiries.  

Logging of inspection results

Thanks to this thermal seal inspection, consistent quality is delivered to the customer within the ESSC22000 seal . A satisfied customer.

"What is important is when a company comes across as technically solid. In addition, it must be customized because we do not have this knowledge in-house. So system integration is a requirement." 

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