Home > SICK’s ML20 markless sensors require no pressure marks

SICK’s ML20 markless sensors require no pressure marks

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article image SICK’s ML20 markless sensor
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The ML20 markless sensors from SICK deliver several advantages in packaging processes.  

Greater flexibility and shorter equipping times for varying labels and formats, more freedom of design in the structuring of packaging systems, and prevention of unnecessary material use and rejects are some of the advantages offered by the ML20 markless sensors.  

Used as pressure mark scanners without requiring pressure marks, the markless sensors detect a taught-in pattern leading to the transmission of a switching signal. The robust sensors are ideally suited for demanding and economical solutions in filling and packaging systems.  

The technological core of the ML20, which can be used for cutting edge regulation for example, is a process for contrast pattern detection specially adapted for use in packaging systems. With this system, the sensor is taught-in a target pattern of up to 1,000mm long, which is then detected in the process with a scanning speed of 7 m/s, and leads to the transmission of a switching signal.  

The ML20 markless sensors offer reproducibility of 0.6mm and extremely precise and stable detection of almost any pattern even with complex designs, tolerances in the path of the continuous material and high machine speeds.    

Key advantages of ML20 markless sensors in packaging processes:  

  • No optically disruptive marks need to be integrated in the design of the packaging, aiding the creative process 
  • Focus can be entirely on package design and efficient use of space for information 
  • Sensor’s metal housing offers a high level of robustness 
  • 90-degree rotatable plug allows the cable outlet to be ideally arranged for the installation location 
  • Visible light spot and directional notches on the housing simplify rapid and precise sensor alignment during commissioning 
  • Pattern to be detected can be taught-in, stored or called up via the sensor’s control panel, control cable or Ethernet 
  • Allows flexible and rapid conversion of packaging machines for changing labels and formats 
  • Stable and process-tolerant detection of even complex image patterns ensures high availability and minimised downtimes 
  • Low equipping times and less time required for format changes lead to low equipping costs 
  • Detection is activated immediately when the label or foil is changed 
  • No optically unfriendly marks need to be covered by overlapping the material, freeing up the entire area and conserving material

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