Warp knitted nylon/spandex fabric enjoys snug wearing, broad market demand and wide application. In order to enhance the twist of fibre, maintain the intensity of fibre and reduce break-up rate of fibre, generally during the production of warp-knit nylon/ spandex fabric, it needs to add some specialised spinning agent. However, the addition of the agent not only can lower the whiteness of fabric, but also can tarnish fabric and even lead to silicone oil spot. In the pretreatment process of spun oil washing, it is likely that the agent will be gathered and then stained on the fabric, which may result in 'white spot', this part of the fabric is not being dyed and it affects fabric dyeing and other processing. Therefore, during the pretreatment of warp knitted nylon/spandex fabric, the spun oil should be washed off evenly.
展开▼
