Purity is value

Driving Impact

Purity is value

S E S Categories  Plastic  black 402x 170717

Purity matters – in the plastics, rubber and chemical industries


A circular economy must not only be sustainable and environmentally friendly, but also profitable for the companies that manufacture, process, and recycle plastics. To this end, the purity of the raw materials and sorting streams plays a decisive role.

Using intelligent technologies and services, we help businesses in the plastics sector operate with circularity and efficiency. In this way, profitability, sustainability, and environmental protection go hand in hand.

In plastic production, small bits of metal contaminants can quickly add up to big costs. In addition to detracting from the quality of the plastic, metal fragments can damage processing machinery, leading to unplanned downtime and equipment failure. In many cases, tiny pieces of metal such as slough from pipes, can bring production to a standstill. Our metal detection systems provide a remedy. 

Our metal detectors and magnet separation systems for the plastics, rubber and chemical industries reliably identify pieces of metal and metal inclusions – regardless of the material – and automatically remove them. In doing so, plastics metal separation systems play an important role in protecting machinery and blow moulding tools, boosting production reliability, reducing downtime, and ensuring high-quality products.


What can a metal detector do for plastics and injection moulding?

Metal detectors and magnetic separation systems help address two of the Six Big Losses of manufacturing productivity: unplanned stops and production rejects. Installing detection and separation technology in your plastics production facility can dramatically reduce unplanned downtime and improve product quality and consistency.

Machinery protection: The plastics, rubber and chemical industries often use expensive equipment, such as injection-moulding machines, calender rolls, extruders and blow-moulding machines. The continuous operation of these machines is tremendously important to a company’s profitability. However, operations can come to a standstill if even the tiniest pieces of metal become lodged in melt filters, hot runners or nozzle tools, obstruct check valves or cause damage to plasticising screws or cylinders. Metal detectors and magnet separators can prevent equipment failure  from occurring. The timely detection and removal of contaminants increases process continuity and productivity by reducing downtime.   

Quality assurance: Product purity is a key quality concern in plastics, rubber, and chemical production. In addition, quality issues may arise if metal contaminants lead to blockages in production equipment, causing too little material to be injected into the moulds of plastic parts. In some industry segments, such as hygiene products, consumer protection is yet another argument for why metallic contaminants must be avoided at all costs. The use of metal detectors can lower the reject rate, prevent complaints and enhance customer satisfaction.

What can we do for you?

For more than four decades, Sesotec has been a trusted expert in metal detection and metal separation for the plastics, rubber and chemical industries. Our metal detectorsact as machinery protection devices, detecting and removing all metals, including ferromagnetic metals such as iron, to stainless steel, aluminum, copper, brass and lead, among others. Furthermore, they do so safely and reliably, regardless of whether the metals are encased, coated, painted, insulated, embedded or loose. To enhance efficiency, magnet separatorscan be implemented upstream to separate out iron and magnetized particles of stainless steel.

Our product range is modular in its design, which means our metal detectors can be adapted to all the requirements that various manufacturing processes entail. We have standardized solutions for all process steps: 

  • Silo filling
  • Conveyor, drying and crystallisation systems
  • Sprue grinders and central granulators
  • Dosing and feeding
  • Inlet at the processing machines (last-chance checkpoint)
  • Packaging of the finished product (final quality check)

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White Paper

Important factors when buying a metal detector for plastics processing machines

How easy is it to install the metal detector in the production line – and how easy is it for your staff to operate the device?

white paper metal contaminants in plastics industry

White Paper

Metal contamination in plastics processing – causes and countermeasures

In our white paper, we provide a detailed outline of the issues, their causes and the necessary countermeasures for eliminating metal contamination in the plastics processing industry.

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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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Marangoni installs Sesotec Metal Detectors
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Machinery protection at Starlinger
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Sesotec Convince Manufacturer of Pharmaceutical Packaging
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Metal detector allows economic processing of regenerated material
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Case Studies

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

Aptar Relies On Sesotec Metal Separators For Machine Protection
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Case Studies

Sesotec metal separators optimise injection moulding process at leading medical technology company
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Case Studies

SABIC chooses Sesotec high performance metal separator
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Case Studies

Metal-free granulate for SUZUKI motorcycle parts
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Case Studies

Injection moulding company outfits 600 machines with SAFEMAG magnet systems
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Case Studies

Quality assurance in the plastics industry with Sesotec metal detectors
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Case Studies

Production security through machine protection in the plastics industry
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Case Studies

Added value with metal detectors in the plastics industry
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Case Studies

Maximale Produktivität der Spritzgießmaschine ohne Stillstand
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Case Studies

Metal detector protects Wanner granulators from damage
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Case Studies

Metal Detector for the Quality Inspection of Rubber Mats
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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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Case Studies

How a metal separator saved this plastics manufacturer 75% in maintenance costs and increased output by 20%
While processing virgin glass-filled material together with regrind, the same problem was coming up up over and over again. Metal inclusions were clogging the hot runners of the molds, leading to as many as 10 emergency stops and 2 to 3 costly repairs per month. After careful consideration of the production environment and manufacturing specifications, the metal detection system PROTECTOR 40 was installed along with the magnet system SAFEMAG at the feed hopper of the injection molding machine.
plast broschuere

Industry Brochures

Optimum Productivity in the Plastics Industry
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Industry Brochures

All about PET
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Product Brochures

RAPID VARIO-FS

Metal separator for free-fall applications with turnable separation unit

rapid pro sense

Product Brochures

RAPID PRO-SENSE

Hochleistungs-Metall-Separator für Freifallanwendungen

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Product Brochures

RAPID DUAL

Metal separator for free-fall applications

rapid 4000

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

protector mf

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

unicon intuity 300dpi 2

Product Brochures

UNICON+

Metall-Detektionssystem für Förderbandanwendungen

varicon plus intuity

Product Brochures

VARICON+

Conveyor based Metal detection systems

Varicon compact

Product Brochures

VARICON COMPACT

Kompaktes Metall-Detektionssystem mit Förderband zur Untersuchung von Stückgütern

magbox mxp

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

rapid pro sense 6

Product Brochures

RAPID PRO-SENSE 6

High-performance metal separator for resin and compound manufacturers

flake scan

Product Brochures

FLAKE SCAN

Analyzing system for the plastics industry

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Circular Economy
Plastics
White Paper
Case Studies
Latest news and blog articles
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Case Studies
How a metal separator saved this plastics manufacturer 75% in maintenance costs
Click here to read the story
granulat blau hand
Case Studies
Machine protection during PVC granulation
Click here to read the story
flake scan
Circular Economy
Quality analysis of plastic flakes and regrind within minutes
Click here to read the story
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White Paper
Keeping plastic compounds free of metallic contaminants
Click here to read the story
opc ua sitraplas1
Case Studies
OPC UA for production without machine downtime
Click here to read the story
granulat blau
Circular Economy
How plastics processors use recyclates profitably
Click here to read the story