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Contaminant detection in the production of plastic compounds

The use of a number of raw materials from different suppliers is common in the compound industry. As a result, there are many potential sources of contaminants. Our metal detectors and separators protect your production equipment and assure product quality.

Sesotec specialises in systems for industrial contaminant detection and has more than 40 years of experience in the plastics 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
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over 40 years of experience and reliability

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Personal support in the after-sales area

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Service-Hotline

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Long-term reliability for spare part supply

FAQ

 

Why is it important to detect and eliminate contaminants in the production of plastic compounds?

It is crucial to detect and eliminate contaminants in order to protect important, expensive machinery and assure product quality. From masterbatch and various additives to recycled and other materials, the sheer number of different raw materials from a wide range of suppliers increases the risk of contamination. Metal particles in particular can quickly cause damage to plasticising screws and cylinders, and block melt filters and nozzle tools. Any one of these things can halt production and lead to downtime and repair costs.  

Particles that end up in the product reduce their quality, which is why customers expect metal-free compounds. With our metal detection systems, which are also able to reliably detect and remove non-magnetic particles embedded in a product, you can prevent customer complaints and boost your competitiveness.

Product example RAPID PRO-SENSE 6


What kinds of contaminants could appear?

Metals such as iron, stainless steel and copper very often interfere with the production of compounds. They make their way into the manufacturing process at various points:

  • The input materials can be contaminated.
  • Pieces of metal from machinery or pipes end up in the product through slough and wear.
  • Contaminants can make their way into open material containers.
  • Staff can lose personal items, such as pens or rings.

 

Where do manufacturers of plastic compounds use our machines?

One common application is the inspection of granules. Such inspections are a sensible course of action in various process steps:

  • Checking incoming goods
  • During production in conveyor pipes, right at the material inlet of an extruder, after a screening machine, etc.
  • Checking outgoing goods (before or after packaging)
  •  

We have standardised systems for a wide range of applications and would be happy to advise you personally to help you find the best solution for the set-up of your processes!

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Content type
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White Paper

Keeping plastic compounds free of metallic contaminants

The Whitepaper explores the challenges that metal contamination poses to compounding and masterbatch production and considers the key features that metal separators must have to provide an adequate solution.

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Case Studies

Machinery protection at Starlinger
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Case Studies

For decades Brückner has been relying on Sesotec metal separators
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Case Studies

SABIC chooses Sesotec high performance metal separator
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Case Studies

Metal detector protects Wanner granulators from damage
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Case Studies

Sitraplas: Risk-free recyclate processing

Separately purchased recyclate often contains various different polymers as well as metal contaminants such as aluminum, brass, and stainless steel. Learn in our Case Study how Sitraplas has solved this problem.

opc ua sitraplas1

Case Studies

OPC UA for production without machine downtime

SITRAPLAS GmbH is a producer of high-performance engineering plastic compounds. Unplanned downtime is a nightmare for every company, but especially for continuous production facilities. When metal separators are networked with plastic processing machines, the flow of information between machines can be monitored.

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Case Studies

Machine protection during PVC granulation

To avoid any metal in the powder, CIPSA wanted to inspect the PVC compounds before they enter the pelletizer. This was to protect the extruder screw from damage and avoid expensive production stops.

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Industry Brochures

Optimum Productivity in the Plastics Industry
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Industry Brochures

All about PET
rapid pro sense

Product Brochures

RAPID PRO-SENSE

Hochleistungs-Metall-Separator für Freifallanwendungen

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Product Brochures

RAPID 4000

Metal separator for free-fall applications

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Product Brochures

PROTECTOR PROFESSIONAL

Hochleistungsausführung Metallseparator für Extruder, Spritzgieß- u. Blasformmaschinen

protector primus

Product Brochures

PROTECTOR

Metall-Separator für Extruder, Spritzgieß- und Blasformmaschinen

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Product Brochures

PROTECTOR MF

Metall-Separator für Spritzgießmaschinen, Extruder und Blasformmaschinen

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Product Brochures

GF

Metall-Separator für pneumatische Förderleitungen

els primus

Product Brochures

ELS

Plate type metal detector for installation in conveyor belts and material chutes

C Scan D L S

Product Brochures

C-SCAN DLS

Splitable metal detector for installation on conveyor belts and material chutes

elcon

Product Brochures

ELCON

Flächen-Metalldetektor zum Einbau in Förderbänder und Materialrutschen

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Product Brochures

UNICON+

Metall-Detektionssystem für Förderbandanwendungen

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Product Brochures

VARICON+

Conveyor based Metal detection systems

Varicon compact

Product Brochures

VARICON COMPACT

Kompaktes Metall-Detektionssystem mit Förderband zur Untersuchung von Stückgütern

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Product Brochures

MAGBOX PLAST

Rohr-Magnet für Freifallanwendungen

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Product Brochures

EXTRACTOR

Rohr-Magnet für Spritzgießmaschinen, Extruder und Blasformmaschinen

safemag

Product Brochures

SAFEMAG

Rohr-Magnet für Spritzgießmaschinen, Extruder und Blasformmaschinen

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Product Brochures

RAPID PRO-SENSE 6

High-performance metal separator for resin and compound manufacturers

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Product Brochures

FLAKE SCAN

Analyzing system for the plastics industry

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Plastics
White Paper
Case Studies
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Case Studies
Machine protection during PVC granulation
Click here to read the story
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Circular Economy
Quality analysis of plastic flakes and regrind within minutes
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wp keeping metals out of compounds preview en
White Paper
Keeping plastic compounds free of metallic contaminants
Click here to read the story
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Case Studies
OPC UA for production without machine downtime
Click here to read the story
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Circular Economy
How plastics processors use recyclates profitably
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Case Studies
Sitraplas: Risk-free recyclate processing
Click here to read the story