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Siptex – world-unique textile sorting

Siptex is the world’s first large-scale facility of its kind. It sorts textiles by colour and fibre composition using near-infrared light, which makes it possible to handle large flows and produce textile fractions that are adapted to different recycling processes.

A new link in the textile value chain

For textile recycling on a larger scale, consistent quality and large volumes are required. Today’s manual sorting of textiles can not match the market’s need for quality-assured products. Automated sorting is the link that is currently missing between collection and high-quality textile recycling.

Siptex will contribute to increased circularity in the textile value chain and strengthen Sweden’s position as a pioneer in innovation and circular economy.

How the facility works

Using near-infrared and visual spectroscopy (NIR / VIS), Siptex sorts textile waste by fibre type and colour. The textiles are illuminated and the light is reflected in different ways depending on the material. Sensors detect and calculate the type of fibre. Compressed air blows the fabric so that it ends up in the right container. The plant can be programmed to sort out three different flows simultaneously.

Materials in

The Siptex plant handles three categories of textile material:

• Textile from industry – Pre-consumer materials from industry, such as waste from production.
• Pre-sorted textile – Pre-sorted post-consumer material of a specific product type, such as torn sheets or t-shirts.
• Sorting residues – Sorting residues from consumers and industry, such as garments that cannot be used again.

Materials out

The Siptex facility will offer a standardized range of quality-assured recycling products with guaranteed fiber composition and color, adapted for various recycling processes. Examples of products:
• Cotton (of specific purity and color)
• Wool (of specific purity and color)
• Polyester (of specific purity and color)
• Viscose (of specific purity and color)
• Polyamid (of specific purity and color)
• Acrylic (of specific purity and color)
• Customized products: the plant can sort out fiber compositions tailored to the customer’s requirements

Quick facts

Capacity: 4,5 tonnes per hour (24 000 tonnes/year)
NIR/VIS-machines: 3
Conveyor: 260 meters

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