Melt spinning

When melt spinning fibres, thermoplastic polymers are used that are elongated into a thin fibre in the melted state. Swerea provides expert knowledge in melt spinning and has in-depth knowledge of which fibre properties are required to develop functional or "smart" fibres.

Examples of functionality are electrical conductivity, piezo-electricity, temperature regulation, flame resistance, resistance to soiling and anti-bacterial properties. Multi-component fibre is one of the most interesting developments for synthetic fibres. At Swerea we have a flexible, semi-industrial pilot system for prototype production runs of mono- and bi-component fibres with various cross sections and material combinations.

For production of specific compounds (melt spinning) we have a modern twin-screw extruder. Advanced equipment for mechanical, physical and chemical analysis is available for evaluating raw materials and finished fibres. We have excellent equipment for studying fibre cross sections and particle distribution using our hyper modern scanning electron microscope (SEM).


We have pilot lines at our disposal for melt spinning (mono- and bi-components, 0.1-3 kg/h). Twin screw extruder with gravimetric dosage and degassing (5-50 kg/h). Texturing and twining equipment. And machinery for producing non-wovens.

We also have several different analysis instruments, such as TGA, DSC, FTIR, SEM, pull testers for fibres (dry and wet strength). As well as a complete lab for testing fibres in the finished textiles.

Contact and more information

Erik Nilsson

+46 (0)31-706 63 21
Swerea IVF