Non-woven fabric is a kind of non-woven fabric, which directly uses polymer chips, short fibers or filaments to form new fiber products with soft, air-permeable and flat structure through various web forming methods and consolidation technologies. It has the characteristics of short process flow, high output, low cost, rapid variety change, and wide source of raw materials. According to different production processes, non-woven fabrics can be divided into:
1. Spunlace non-woven fabric: It sprays high-pressure fine water stream onto one or more layers of fiber web to make the fibers entangled with each other, so that the fiber web can be reinforced and possess a certain strength.
2. Heat-bonding non-woven fabric: refers to adding fibrous or powdery hot-melt adhesive reinforcement material to the fiber web, and then the fiber web is heated, melted and cooled to form a cloth.
3. Pulp air-laid non-woven fabric: It can also be called dust-free paper and dry-process paper-making non-woven fabric. It uses air-laid technology to open the wood pulp fiberboard into a single fiber state, and then uses air-flow method to agglomerate the fibers on the web curtain, and then reinforce the fiber web into a cloth.
4. Wet-laid non-woven fabric: the fiber raw materials placed in the water medium are opened into single fibers, and different fiber raw materials are mixed at the same time to form a fiber suspension slurry, which is transported to the web forming mechanism, and the fibers are in a wet state. Form a net and then reinforce it into a cloth.
5. Spunbond non-woven fabric: After the polymer has been extruded and stretched to form continuous filaments, the filaments are laid into a web, and the web is bonded by itself, thermally bonded, chemically bonded or mechanically reinforced Method to make the web into a non-woven fabric.
6. Meltblown non-woven fabric: The process: polymer feeding---melt extrusion---fiber formation---fiber cooling---netting---reinforcement into cloth.
7. Needle-punched non-woven fabric: It is a kind of dry-laid non-woven fabric. The needle-punched non-woven fabric uses the piercing effect of a needle to reinforce the fluffy web into a cloth.
8. Stitched non-woven fabric: It is a kind of dry-laid non-woven fabric. The stitching method uses the warp-knitted loop structure to align fiber webs, yarn layers, non-woven materials (such as plastic sheets, plastic thin metal foils, etc.) or Their combination is reinforced to make a non-woven fabric.
Because non-woven fabrics have many excellent functional properties and are extremely versatile, they can be divided into:
1. Non-woven fabrics for clothing;
2. Leather, non-woven fabrics for shoemaking;
3. Household decoration, household non-woven fabric;
4. Non-woven fabrics for medical and health use;
5. Non-woven fabric for filter material;
6. Non-woven fabrics for industrial use;
7. Non-woven fabrics for automobile industry;
8. Non-woven fabrics for packaging;
9. Non-woven fabrics for agriculture and horticulture;
10. Non-woven fabrics for military and national defense industries;
11. Non-woven fabrics for other industries.
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