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A matrix for recycled-fiber quality Graphic: (c) Uster Technologies AG
10.09.2026

A matrix for recycled-fiber quality

Uster Technologies has introduced a structured matrix for assessing mechanically recycled fibers. The approach is intended to help spinners deal with the wider variability of recycled feedstocks and relate measured fiber properties more directly to processing decisions and intended end uses.

Mechanically recycled cotton typically shows greater variation than virgin material because fiber length is reduced and input streams differ in origin and processing history. A consistent assessment framework can therefore support bale management, blending decisions and the adjustment of spinning parameters. Uster positions the Recycled Fiber Matrix as a practical bridge between increasing recycled-content targets and reliable quality control.

This matters for circularity at industrial scale. More recycling capacity alone does not guarantee usable yarn feedstock; recycled fibers also need to enter established production systems with predictable performance. Testing and data interpretation are becoming part of the infrastructure required to move textile-to-textile recycling from availability to repeatable production.

Uster Technologies has introduced a structured matrix for assessing mechanically recycled fibers. The approach is intended to help spinners deal with the wider variability of recycled feedstocks and relate measured fiber properties more directly to processing decisions and intended end uses.

Mechanically recycled cotton typically shows greater variation than virgin material because fiber length is reduced and input streams differ in origin and processing history. A consistent assessment framework can therefore support bale management, blending decisions and the adjustment of spinning parameters. Uster positions the Recycled Fiber Matrix as a practical bridge between increasing recycled-content targets and reliable quality control.

This matters for circularity at industrial scale. More recycling capacity alone does not guarantee usable yarn feedstock; recycled fibers also need to enter established production systems with predictable performance. Testing and data interpretation are becoming part of the infrastructure required to move textile-to-textile recycling from availability to repeatable production.

Valmet 3D Fiber technology combines high capacity and speed, automation, and resource efficiency to produce high-quality molded fiber packaging. Photo by VALMET
Valmet 3D Fiber technology combines high capacity and speed, automation, and resource efficiency to produce high-quality molded fiber packaging.
28.08.2026

Valmet and Metsä scale 3D fibre forming to commercial production

Metsä Group has selected Valmet to supply what the companies describe as the world’s first commercial-scale production line for Valmet’s 3D Fiber technology. The line will be installed in Äänekoski and is scheduled to start up in 2028, with a nominal capacity of more than 100 million three-dimensional fibre products per year.

The process converts cellulose fibres directly into lightweight yet rigid end products. Valmet combines fibre processing, forming, automation and final packing in an integrated production chain. The technology has been co-developed with Metsä Spring since 2020 and was initially validated in a demonstration plant.

Although packaging is the primary target market, the development is relevant to the textile and fibre sector because it demonstrates how fibre-based structures and forming technologies are moving into three-dimensional industrial applications.

Metsä Group has selected Valmet to supply what the companies describe as the world’s first commercial-scale production line for Valmet’s 3D Fiber technology. The line will be installed in Äänekoski and is scheduled to start up in 2028, with a nominal capacity of more than 100 million three-dimensional fibre products per year.

The process converts cellulose fibres directly into lightweight yet rigid end products. Valmet combines fibre processing, forming, automation and final packing in an integrated production chain. The technology has been co-developed with Metsä Spring since 2020 and was initially validated in a demonstration plant.

Although packaging is the primary target market, the development is relevant to the textile and fibre sector because it demonstrates how fibre-based structures and forming technologies are moving into three-dimensional industrial applications.

Source:

VALMET