Non-woven fabric related knowledge

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 planar 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 raw material sources. According to the different production processes, non-woven fabrics can be divided into: 1. Spunlace non-woven fabrics: spray high-pressure fine water streams to one Layered or multi-layered fiber webs make the fibers entangled with each other so that the fiber webs can be reinforced and have a certain strength. 2. Heat-bonded non-woven fabric: refers to adding fibrous or powdery hot-melt adhesive reinforcement materials to the fiber web, and the fiber web is heated, melted and cooled to reinforce into a cloth. 3. Pulp air-laid non-woven fabric: also known as dust-free paper and dry 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 the 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. Melt-blown 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. Non-woven fabrics for leather and shoemaking; 3. Home decoration and home non-woven fabrics Cloth; 4. Non-woven fabric for medical and health use; 5. Non-woven fabric for filter material; 6. Non-woven fabric for industrial use; 7. Non-woven fabric for automobile industry; 8. Non-woven fabric for packaging; 9. Agriculture and gardening Non-woven fabrics; 10. Non-woven fabrics for military and defense industries; 11. Non-woven fabrics for other industries. 1. Non-woven fabrics are fabrics that are not woven, but are twisted together with many punctured needles, or partially adhered together. 2. People have invented the manufacturing principle of non-woven fabrics in the early 20th century. The first factory-scale production was American Felt Co. (American Felt Co.) in 1939, and KARL FREUDENBERG in Europe and Germany around 1944. Started the production of non-woven fabrics. The production of non-woven fabrics in Japan started with DAINIKKU Co., Ltd. in 1958, and seven more companies joined in the following two years. Now the uses, materials and manufacturing methods of non-woven fabrics have increased, and they have become an integral part of our lives. The secret lies in the flexibility, thickness, various properties and shapes that can be freely created according to different raw materials and processing methods. 3. Non-woven fabrics have many advantages: 1) breathability, 2) filtration, 3) heat preservation, 4) water absorption, 5) waterproof, 6) stretchability, 7) not messy, 8) feel good, soft, 9) light and 10) flexible and can Restoration 11) There is no directionality of the fabric. 12) Compared with woven fabric, it is more productive and faster. 13) The price is low and mass production is possible. The non-woven fabrics commonly used to make handbags are 75 grams, 80 grams (common), 90 grams, 100 grams, and 120 grams. We provide 40g to 200g for customers to choose, suitable for different purposes and needs. The unit of grammage of non-woven fabric is: g/m2, which is the weight per square meter. The inspection method is: take a sample and evenly sample in the transverse direction of the cloth. The sample has a special mold knife, and the area of u200bu200beach sample is 100 Square centimeters, take at least 10. The more the more the more accurate. Then the conversion will do. Be sure to sample in the horizontal direction, such as sampling in the vertical direction, the result will be inaccurate, because the non-woven fabric is bound to have uniformity problems. If the sampling is along the Longitudinal means that the samples taken are in the same position, which is not universal and cannot truly reflect the actual unit weight. The price of non-woven bags consists of three parts: fabric + printing + lathe specifications* Weight * unit price u003d fabric price (and the edging and the handle are included)