Contemporary methods for producing fibres from soya bean protein

7 Contemporary methods for producing fibres from soya bean protein 

Drying has to be carefully controlled to maintain a good hand. It should be carried out with as little tension as possible and at temperatures below 100°C.  

SPF fibres are usually light yellow in colour. They are stable with both hydrogen peroxide and reduction bleaching. A whitening or brightening treatment may be necessary for purer whiteness (Fig. 13.7). When bleaching an SPF blended with another fibre, care must be taken to use a method suitable for both fibres. Either acid or reactive dyes may be used dye fastness compares well with that of silk.  

11 Tee-shirt in Luxury Soy 55% soy, 40% cotton, 5% Lycra . Colorado Trading and Clothing. Photograph Textile Conservation Centre, University of Southampton. 

The resulting fibres can be spun on cotton or worsted machinery and blended with cashmere (80% soya to 20% cashmere) or in 50% blends with wool, silk, cotton (Fig. 13.8). It can be woven into high quality fabrics with high weave counts (Fig. 13.9). 

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