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rCF-Sliver with high fibre orientation

News International-French

18 Feb 2016

JEC World 2016 - The rapidly growing use of carbon fibre-reinforced plastics (CFRP) in lightweight structures is leading to a wide range of production waste.

To reprocess and recycle this type of waste, STFI successfully developed nonwovens made of recycled carbon staple fibres and processed by carding technology. The first research results included the formation of a web from 100% carbon fibre or blends with other staple fibres and subsequent inline bonding of the textile fabrics.

Based on these results, further research work was conducted in the manufacture of a staple fibre sliver from 100% recycled carbon fibres (blends also possible) followed by inline bonding into a strand-like semi-finished textile product, a so-called secondary roving. The recycled carbon staple fibres could be carded without the application of any other additive fibres; no massive fibre breakage or unacceptable fibre shortening were observed. The weight of the staple fibre sliver ranges between 2.8 and 4.6 ktex.

The results of these trials are strand-like, flexible, stretchable and better drapable carbon fibre structures made of recycled production waste for unidirectional load bearing.

The main objective of the project was to produce cost-effective semi-finished textile products for selected CFRP applications by substituting primary fibre rovings or tapes made of carbon.

Booth: C77