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DETECTION OF SCRATCHES ON METAL COVERS

In the cosmetics industry, the appearance of packaging is a key factor in brand image. Scratches, dents, printing defects... each imperfection can impact the perception of the product and generate significant costs.

Metal lids play a key role in product preservation and must meet strict quality standards. Rigorous control ensures not only the integrity of the packaging but also the satisfaction of the end customer.

THE CHALLENGE

A cosmetics industry player wanted to optimize its quality control system for metal caps, facing several challenges:

  • Multiplicity of references: lids in various colors, sizes, and embossings.
  • Extremely fine scratches: difficult to detect visually, as their visibility varies depending on the angle and light.
  • High cadence: 150 pieces per minute, at a speed of 100 meters/minute.
  • Detection of various defects: beyond scratches, CODA also had to identify print misalignments, spots, impacts, and varnish pulls.

The technologies already installed on the line, including a Lumitrax system, did not allow for optimal detection of the finest defects.

THE METHODOLOGY


To address these constraints, CODA Systems has implemented an advanced solution:


  • Installation of a Keyence Lumiline lighting system and a 4K linear camera, ensuring ultra-precise capture of imperfections.


  • Combination of specular and diffuse light, allowing for the optimization of the visibility of scratches, even the finest ones.


  • Advanced automation of the HMI, to adapt the program to all lid references without manual adjustments.


  • High-speed system, capable of inspecting each part with optimal speed and reliability.

THE RESULTS

The client now benefits from improved quality control, with significant gains:

  • Reduction of the defect rate passed on to end customers.
  • Reduction of scratches detected after production.
  • Better understanding of the origins of defects, facilitating upstream adjustments.
  • Complete automation of control, eliminating the need for manual inspection.


Thanks to this advanced industrial vision solution, the quality control of metal caps is now reliable and precise, ensuring perfect compliance with the requirements of the cosmetics industry.

ANY QUESTIONS ?

If you would like to share a project or need more information, our team is at your disposal.

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