Metal Detectable Selection Criteria

Benefits of Metal Detectable Materials

Metal Detectable plastics can add a whole new level of foreign contaminant prevention. What plastic is best for your application? What criteria should you consider when optimizing a detectable material for your food application? Let’s look at a few selection criteria to consider when specifying detectable materials.


  • •Wet, Dry, Liquid, Frozen or Paste
  • •Temperature (Plastics soften as temperature increases)
  • •Pressure and Velocity (PV)
  • •Friction / Abrasion


Certain materials can react to chemicals.

  • Acidic or Basic (E.g., Tomatoes, Apples)
  • What chemicals is the part exposed to during cleaning?
  • Continuous exposure to hot water or steam


There are several different manufacturers of detection systems. Each detector requires a specific calibration depending on the size, location, and process.

  • •Calibration Levels
  • •Orientation to Food Stream
  • •Aperture Dimensions

Depending upon the sensitivity of your system, smaller pieces (< 3mm) that may break off and fall into the production stream are capable of consistently being detected, allowing product to be set aside for visual inspection, preventing a potentially expensive recall.

We have a long history in proposing the most suitable radiation resistant polymer for any environment. Contact dana Scott or your nearest port plastics sales office for all of your material needs.

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