The singeing machine is divided into two types: gas and contact hot plate. The hot plate singeing machine is divided into copper plate singeing machine and There are several types of alloy cylinder singeing machines and electric heating metal plate singeing machines. The heat sources of gas singeing machines are generally coal gas, petroleum gas and gasoline. In the past, except for a few dyeing and finishing factories that used metal hot plate (copper plate cylinder) singeing machines, most of them used gas singeing machines. However, as the requirements for the singeing quality of medium and thick pure cotton fabrics and high-density pure cotton fabrics are getting higher and higher, a company has developed a porcelain tube type electric heating contact metal plate burner to process 14*2tex*28tex pure cotton semi-finished products. For thread khaki, when the vehicle speed is 70-80m/min, the singeing quality is greater than or equal to level 4 (only short hair and relatively neat), while the vehicle speed for general fabrics is 90-220m/min.
Purpose of singeing machine:
When the fibers are rubbed during the spinning and weaving processes, many short and loose fibers are exposed on the surface of the yarn, and a layer of short fibers stands on the surface of the fabric. If you flatten the fabric and hold it in front of your eyes, you can see this layer of fluff of varying lengths along the surface of the fabric. This layer of fluff not only affects the smoothness of the fabric and is easily contaminated with dust, but also causes various defects during the printing and dyeing process. If fluff falls into the mercerizing lye, the impurities in the lye will increase, affecting the mercerizing gloss and making it difficult to recycle the lye: fluff falling into the printing paste will easily cause slurry drag and knife drag, affecting the clarity of the pattern and other defects: polyester/cotton The surface fluff of the fabric is prone to fluffing and pilling. Therefore, except for some special varieties, general cotton, linen fabrics, polyester, vinylon, acrylic and cotton blended fabrics must be singed before deboiling and bleaching. Some worsted wool fabrics, silk fabrics, knitted fabrics and yarns need to be singed according to processing requirements.
Principle of singeing machine:
Singeing is a process in which the fabric quickly passes through the flame of the singeing machine or rubs the red-hot metal surface in an open-width state to remove the fluff on the surface of the fabric and obtain a smooth surface. At this time, the fluff on the cloth surface is close to the flame and loose, and it quickly heats up and burns. The fabric itself heats up slowly because it is relatively tight, thick, and far away from the flame. When the temperature has not reached the ignition point, it has already left the flame or the red-hot metal surface. Therefore, the principle of different heating rates between the cloth body and the fluff is used to achieve It only burns away the fluff on the surface without damaging the fabric. Of course, if the temperature of the singeing and the speed of the singeing machine are not properly controlled, electricity will damage the fabric.
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