Singeing is the process of quickly passing a yarn or fabric through a flame or rubbing it over a hot metal surface to burn off the surface hair. Fiber processing through the textile will produce a lot of hair on the surface of the yarn and fabric, affecting the dyeing and finishing process. According to the requirements of the products, some yarns (such as silk) and most of the fabrics have to undergo a singeing process to make the surface smooth and smooth. The flame temperature of the singeing is usually 900 to 1000 ° C, and the surface temperature of the hot metal plate is also 800 ° C, which is higher than the decomposition temperature or ignition point of various fibers. When singeing, the yarn or fabric passes through the flame at a high speed under a certain tension state. Since the hair of the protruding surface is relatively heated, the surface is heated to the point of ignition and burns, and the yarn and the fabric body are closely twisted and intertwined. The rate of temperature rise is not so rapid, so it is rarely affected.
