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Technical Absorbents
Technical Absorbents

21st November 2018, Tokyo

Teijin develops highly modified cross-section crimped yarn

Teijin Frontier, the Teijin Group's fibre and products converting company, has developed Solotex Octa, a highly modified cross-section crimped yarn that is extra bulky, lightweight, stretchable and shape-recovering.

Teijin Frontier expects annual sales of staple-fibre Solotex Octa to reach 400 tons and sales of filament Solotex Octa to reach one million metres as textiles by the fiscal year ending in March 2023. Samples will be provided in the fiscal year 2018, according to the manufacturer.

Solotex Octa filament. © Teijin

“Synthetic staple fibre insulation that is extra shape-recovering after compression, bulky and lightweight is in demand as a substitute for natural feathers. There also is demand for extra bulky, lightweight and stretchable synthetic filament, but until now, manufacturers have found it difficult to produce such fibre that is both bulky and stretchable,” the company says.

Teijin Frontier developed Solotex Octa by transforming the cross-sectional shape of Solotex, a stretchable, shape-recovering and high-cushioning material, into a highly modified cross section comprising eight projections aligned in a radial pattern around a hollow fibre.

Solotex Octa filament. © Teijin

According to the company, Solotex Octa offers the following features in addition to those of Solotex:

  • Shape-recovering after compression, highly bulky, lightweight and stretchable owing to the clearance between fibres
  • When used for staple fibres, maintains its coiled crimp structure with rigidity due to its cross-section shape, resulting in shape-recovering after compression, high stretchability and cushioning
  • Textiles are absorbent, quick drying, anti-transparent, and provide thermal barriers and insulation due to Solotex Octa’s large surface area

Solotex Octa short fibre. © Teijin

Teijin Frontier says it envisions a wide range of promising applications for Solotex Octa, including fashionwear, industrial materials, and more. The staple-fibre version will be used in place of feathers mainly for bedding. The filament version of Solotex Octa will be used in textiles for sportswear and fashionwear.


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  • Fazil Khan - Research And Development Manager - BText. NZIM, CText. FTI/ Woolyarns Limited/New Zealand 25th November 2018 21:00PM

    We are a woollen yarn spinner and interested in Solotex Octa fibre. Please advise if you are able to supply 20Kg sample in 1.3dtex - 55mm fibre length for our spinning trials. Our contact details are : WOOLYRNS LIMITED 25 - 27 EASTERN HUTT ROAD, LOWER HUTT WELLINGTON NEW ZEALAND Tel: + 64 4 920 5304 Mobile: +64 21 353 018 Email: [email protected] Website: woolyarns .co.nz