Contaminant detection in the rubber and tyre industry

For manufacturers of vehicle tyres and other products made out of rubber, the consequences of pieces of metal accidentally making their way into the production process can quickly become costly. Damage and downtime are potential risks, but we have the right metal detection systems to minimise them.

Sesotec specialises in systems for industrial contaminant detection and has more than 40 years of experience in the tyre and rubber industry.

We provide a complete range of leading technology that includes metal detectors and magnet systems for the reliable detection and removal of contaminants in a wide variety of applications. Our systems can target ferrous metals, stainless steel and non-ferrous metals, such as aluminium, copper or brass − regardless of whether the metals are magnetic or not, coated, painted, loose or embedded in material.

Sesotec's strengths

over 40 years of experience and reliability

Personal support in the after-sales area


Long-term reliability for spare part supply

More detailed information


Why is contaminant detection important in the production of tyres and other rubber products?

Machine protection is key, as high capacity utilisation, automation and perfectly coordinated process steps provide the foundation for economical production lines in the rubber and tyre industry. Protecting manufacturing equipment from damage and downtime is therefore a top priority. Pieces of metal that accidentally make their way into the processed material, whether on the supplier’s end or during in-house production, play a major role as the potential cause of such incidents. They can block extruders, for example, or leave behind impressions in calender rolls. These impressions often result in deformations or indentations in the final product (e.g. tyres), compromising a tyre’s durability and putting the safety of consumers at risk. As a result, systems for detecting and removing metals are part of the standard equipment for machine protection and quality assurance in the tyre and rubber industry.


What challenges does contaminant detection face in the tyre and rubber industry?

Different rubber formulations contain varying amounts of carbon black, oxides and activators. As a result, there are large variations in intrinsic conductivity. Other considerations that come into play include the operational environment featuring many different machines and the extremely slow conveyor speed in many cases. These factors make it difficult to reliably detect pieces of metal while avoiding false alarms. 

Sesotec metal detectors therefore feature state-of-the-art detection technology with the highest degree of scanning sensitivity. In addition, they can actively block ambient interference and compensate for the material’s intrinsic conductivity through saved settings for different rubber formulations. Multi-frequency technology makes it possible to easily inspect compound formulations with a high degree of intrinsic conductivity as well.

What kinds of contaminants could appear?

Metals of any kind are the contaminants most frequently found in the rubber and tyre industry. They can come from a variety of sources:

  • Contaminated input materials (rubber, additives)
  • Wear and slough from machines or pipes
  • Contamination that occurs during transport operations within production
  • Personal items belonging to staff (pens, jewellery, etc.)


Where do rubber and tyre manufacturers use our machines?

The most common applications include the following:

  • Incoming goods inspection of rubber and additives
  • Inspection of rubber sheets on conveyor belts (before being fed into extruders or calenders)
  • Final quality check of finished products before packaging

As you can see, we support you in all steps of the process. We would be happy to advise you personally to find the right solution for your need together.


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