Zick-Zack-Sichter

Intelligente Trennung in der Kunststoffreinigung

Das Trennen von dünnen Folien vom dickwandigen Mahlgut ist eine häufige Aufgabenstellung beim Kunststoffrecycling.
Eine typische Anwendung ist z. B. die Entfernung von losen Etiketten auf PET beim Recycling von Getränkeflaschen. Wertvoll sind ausschließlich die reinen PET-Teilchen.
Im Zick-Zack-Sichter werden mit dem Luftstrom die leichten Etiketten nach oben abgesaugt. Das schwere Mahlgut fällt nach unten. Einfacher kann man Kunststoffe nicht voneinander trennen.

Ihre Anforderung bestimmt über die Anzahl und die Bauart der Zick-Zack-Windsichter

Das Trennen von leichtem Material aus dickwandigem Hartplastik ist ein wichtiger Schritt zur Herstellung hochwertiger Rezyklate. 

Hauptanwendungen des Zick-Zack-Sichters sind:

  • Entfernen von Etiketten aller Art (Papier, LDPE, PP, PET oder Verbundmaterial) aus zerkleinertem PET, HDPE oder PP Flaschenmahlgut.
  • Trennen von Aluminiumfolie von HIPS Stanzresten oder Hartkunststoffen aus der Verpackungsherstellung.
  • Entfernen von Feinstaub aus Mahlgut.

Selbst das Trennen von Störstoffen auf dünnwandigen Folien ist mit dem Zick-Zack-Sichter möglich. Die einzelnen Sichterelemente werden breiter, um mehr Anhaftungsfläche für die Folie zu bieten.

Ihre Vorteile für eine hohe Trennschärfe

  • Parallelschaltung mehrerer Sichter für eine große Verarbeitungsmenge
  • Homogener Luftstrom über die Breite des Sichtkanals
  • Neben der Trennung der Fraktionen entfernen Sie gleichzeitig Staubanhaftungen des Mahlguts
  • Vertikale platzsparende Bauweise
  • Niedriger Energieverbrauch und geringer Verschleiß

Can be used for following material

Domestic and industrial waste
Alternative fuel
Plastics - post-consumer
Plastic - post-industrial
All

Domestic waste

Residual waste is optimally handled by shredding it in mechanical-biological waste treatment plants (MBT) and separating the various recyclable materials from each other. Another use of residual waste is thermal utilisation in a waste incineration plant. The heat released is used both to generate electricity and to provide heat.

Lightweight packaging

Increasing the recycling rate of packaging with the aim of recycling more valuable materials than before is a key issue in the circular economy. In order to efficiently recycle the packaging collected in bags, this waste must be continuously and reliably sorted.

Domestic waste

Typical residual waste from households offers little potential for material recycling. However, in the cement industry, the high-calorific fractions from the waste can be used as an alternative fuel. RDF manufacturers filter out these fractions by shredding and separating them.

Industrial Waste for Alternative Fuels – Processing & Recycling Solutions

The non-recyclable materials from waste generated in industry and commerce can be processed into RDFs and used in power plants or the cement industry.

Waste paper industry

Both the cement industry and brick manufacturers increasingly rely on RDFs for their production. Waste from paper production can be used as an alternative fuel.

Hard plastic

In contrast to the processing of lightweight packaging, which is primarily well organised today, hard plastics were still often thermally recycled in the past. However, the recycling rate of these materials is now also increasing thanks to optimised treatment processes.

Big bags and bulk material containers

In order to return extremely tear-resistant plastic fabrics such as big bags to the production cycle, they have to be processed. The key component for this is the shredder. The more efficient the shredder, the safer the subsequent processes. With Vecoplan, these robust and often contaminated connective tissues can be efficiently processed.

Films – A second life even after intensive use and contamination

Regranulates can be created as secondary raw materials from packaging, agricultural film, composite film, etc. The treatment process for this includes shredding technology, separation and sorting technology, washing and subsequent extrusion.

Packaging

As the demand for high-quality regranulates increases, closed-loop recycling is playing an increasingly important role in the material recovery of plastics, and this is why shredding is a critical process step since it is a preliminary stage for the subsequent sorting of recyclable materials.

Hollow body containers

As the demand for the use of recyclates made from polyolefins – especially HDPE and PP – is constantly increasing, the collection and processing of these containers are also playing an increasingly important role. Here we must ensure that we adapt our machines and plants to the requirements of the materials.

Pre-Products

The recycling of plastics which are expensive to produce due to their technical properties and are often used to manufacture semi-finished products offers some potential savings for manufacturing companies. However, clean separation of the different plastics is a prerequisite. The pure regranulate obtained can then be used to produce sophisticated plastic components.

Films – Industrial production waste

Waste generated during production should, if possible, be returned directly to the internal production cycle without any losses or loss of quality. If such in-house recycling is not possible due to company-specific constellations, external recycling companies can also process film waste.

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