Singeing is a process in which the fabric is quickly passed through the flame of the singeing machine or rubbed against 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.
There are two ways of singeing, namely contact singeing and non-contact singeing
1. Contact singeing machines include copper plate singeing machines, cylinder singeing machines, and electric hot plate singeing machines.
2. The non-contact singeing machine is a gas singeing machine.
At present, gas singeing machines are widely used, copper plate and cylinder singeing machines are not widely used, and electric hot plate singeing machines have been basically eliminated.
When fibers are rubbed during spinning and weaving, 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 hold the fabric flat in front of your eyes and follow it along the surface, you can see this layer of fluff of varying lengths. 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 the 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; the fluff falling into the printing paste will easily cause defects such as dragging the slurry and dragging the knife, affecting the clarity of the pattern; The surface fluff of polyester/cotton fabrics is prone to pilling 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 also need to be singed according to processing requirements.
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