Textile and fibre company Teijin has developed a new polyester combined-filament yarn and yarn-processing technology to create a lightweight premium black fabric that retains its colour and is expected to meet demand for easy-care formal wear.
Teijin Frontier Co, the Teijin Group’s fibre-product converting company, says up to now, it was difficult to reduce a fabric’s weight while retaining its deep black colour as the fabric had to be shrunk to prevent light reflection and increase its density – making it unsuitable for formal black wear by its weight.
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Teijin Frontier’s solution optimises the fibre, the fabric structure and the post-dyeing processing technology in lightweight, premium black fabric. To realise a premium black colour, the company developed a new polyester combined-filament yarn by incorporating a new polymer technology and a new yarn-processing technology with orientation control. Light reflection was suppressed by lowering the refractive index and using thin-film fabrication processing to make the yarn bulky, so low transparency is achieved without shrinkage of the fabric.
In the development stage, Teijin Frontier produced a deep black colour by greatly shrinking the yarn, but this raised the fibre’s density and increased its contact area, which led to whitening due to friction. As a result, the thread structure was redesigned for less shrinkage and finer yarn threads. Reduced shrinkage and greater bulkiness decreased whitening surface, said the firm.
The company is targeting annual sales of JPY200m (US$1.76m) by the fiscal year ending March 2021.
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By GlobalData
