Non-woven fabrics also become non-woven fabrics (Taiwan name), non-woven fabrics (more formal scientific name). Traditional fabrics, whether woven or knitted or otherwise, go through the process of fiber - spinning - weaving, while non-woven fabrics do not need the process of spinning, hence the name.
The main process of non-woven fabric is fiber mesh - consolidation - post-treatment, the types are mainly in accordance with the method of consolidation into mesh classification, the main spunbond, water spined, impregnation, acupuncture, hot rolling and so on.
Whether degradation mainly depends on the type of fiber, if it is all natural fiber, certainly can. If it can be recycled, it is also a kind of green material. However, most non-woven fabrics, especially the common non-woven bags in anhui province, are spun-bonded. The fiber material is PP and polypropylene, which cannot be degraded.
The main raw material is PP. Of course, it is also useful for the production of PET and PLA, among which PLA can be degraded. Spunbond process and chemical fiber products are similar, the first is the raw material through the screw extruder, after melting through the metering pump, to the spinneret (we use is about 5,000 holes per meter, different types of hole density is not the same).
Through the cold air will come out of the spinneret hole is wire cooling, spread on the screen, and then through the hot rolling mill into a row.
Biodegradable non-woven fabrics have a high cost. In general, adding biodegradable components to plastics will increase the cost in the first place and reduce processability or mechanical properties. Injection molding products are better than film products. Also, fiber degradation is the most troublesome.
