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What are the differences between the textile post-processing techniques of brushing, raising, and shearing?
Raising: The process of using sand grinding rollers (or belts) to grind a layer of short and dense fluff on the surface of the fabric is called raising, also known as napping.
Raising: The process of using sand grinding rollers (or belts) to grind a layer of short and dense fluff on the surface of the fabric is called raising, also known as napping. Napping finishing can produce fluff from both the warp and weft yarns, resulting in short and dense fluff.
The equipment used for the napping process is the napping machine, which uses sandpaper, carbon, ceramic, and other rollers to grind the microfibers in the fabric yarns, creating a fluff effect on the surface. Compared to products that are brushed, the fluff from napping is short and dense, with a very delicate feel. Specific products include napped yarn card, napped satin, peach skin velvet, etc. Some napped products may not appear to have a significant fluff effect, but the tactile experience is greatly improved.
Fuzzing: Fuzzing processing is the process of exposing the fibers on the surface of the fabric to increase its thickness, improving the hand feel through softeners and enhancing its thermal insulation properties. The fuzzing process directly determines the style and quality of the fabric. By processing the fabric with fuzzing, the appearance and hand feel of the fabric can be significantly improved, enhancing its warmth and practicality. It is mainly used for coarse wool fabrics, acrylic fabrics, and cotton fabrics.
Shearing: Shearing is the process of using a shearing machine to cut off the unwanted fluff on the surface of the fabric. The purpose is to make the fabric weave clear and the surface smooth, or to make the fluff or pile of raised or napped fabrics neat. Generally, wool fabrics, velvet, artificial fur, and carpets require shearing.
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