Analysis of the difference between melt blown cloth and non-woven cloth
The new crown epidemic in the spring of 2020 has made masks and protective clothing and other materials popular, especially disposable masks, which have risen from the original few cents one by one to several tens of yuan a sky-high price, so a small amount of masks should be very expensive to produce. Simply, why is it so scarce? In fact, masks are made of non-woven fabrics at the base level. However, a layer of meltblown fabric is the core material of masks. This article, Standard Group, will focus on the differences between non-woven fabrics and meltblown fabrics. Melt blown cloth is mainly made of polypropylene, and the fiber diameter can reach 1 to 5 microns. There are many voids, fluffy structure, and good anti-wrinkle ability. These ultra-fine fibers with unique capillary structure increase the number and surface area of u200bu200bfibers per unit area, so that the meltblown cloth has good filtration, shielding, heat insulation and oil absorption. . It can be used in the fields of air, liquid filter materials, isolation materials, absorption materials, mask materials, thermal insulation materials, oil absorption materials and wipe cloths. Applications: (1) Medical and sanitary cloths: surgical gowns, protective clothing, disinfection wraps, masks, diapers, sanitary napkins, etc.; (2) Home decoration cloths: wall coverings, table cloths, bed sheets, bedspreads, etc.; (3) Follow-up cloth: lining, adhesive lining, wadding, styling cotton, various synthetic leather base cloth, etc.; (4) Industrial cloth: filter material, insulating material, cement packaging bag, geotextile, covering cloth Etc.; (5) Agricultural cloth: crop protection cloth, seedling cloth, irrigation cloth, thermal insulation curtain, etc.; (6) Other: space cotton, thermal insulation materials, linoleum, cigarette filters, tea bags, etc. The meltblown cloth filter material is randomly distributed and bonded together by polypropylene microfibers. The appearance is white, flat and soft. The fiber fineness of the material is 0.5-1.0μm. The random distribution of fibers provides more thermal bonding between fibers. Opportunities, so that the melt blown gas filter material has a larger specific surface area, a higher porosity (≥75%). After high-pressure electret filtration efficiency, the product has the characteristics of low resistance, high efficiency and high dust holding capacity. Non-woven fabric (English name: Non Woven Fabric or Nonwoven cloth), also known as non-woven fabric, is composed of directional or random fibers. It is called cloth because of its appearance and certain properties. Non-woven fabric has the characteristics of moisture-proof, breathable, flexible, light weight, non-combustible, easy to decompose, non-toxic and non-irritating, rich in color, low price, and recyclable. For example, polypropylene (PP material) pellets are mostly used as raw materials, which are produced by continuous one-step method of high-temperature melting, spinning, laying, and hot-pressing coiling. Features of non-woven fabric: non-woven fabric has no warp and weft threads, it is very convenient to cut and sew, and it is light in weight and easy to shape, which is deeply loved by craft lovers. Because it is a kind of fabric that does not need to be spun and weaves, it just oriented or randomly arrange the textile short fibers or filaments to form a web structure, which is then reinforced by mechanical, thermal bonding or chemical methods. It is not made of interwoven and knitted yarns one by one, but the fibers are directly bonded together by physical methods. Therefore, when you get the sticky scale in your clothes, you will find that, It is impossible to draw a single thread. Non-woven fabric breaks through the traditional textile principle, and has the characteristics of short process flow, fast production rate, high output, low cost, wide use, and multiple sources of raw materials. The relationship between non-woven fabrics and spunbond fabrics Spunbond fabrics and non-woven fabrics are subordinate relationships. There are many production processes for the manufacture of non-woven fabrics, among which spunbond is one of the non-woven production processes (including spunbond, meltblown, hot-rolled, and spunlace. Most of them are currently on the market. Non-woven fabrics produced by spunbond method) Non-woven fabrics are polyester, polypropylene, nylon, spandex, acrylic, etc. according to the composition; different compositions will have completely different styles of non-woven fabrics. The spunbond fabric usually refers to polyester spunbond and polypropylene spunbond; the styles of these two fabrics are very similar and can be distinguished by high temperature testing. Non-woven fabric is a kind of non-woven fabric, which directly uses polymer chips, short fibers or filaments to form fibers through airflow or mechanical netting, and then undergo hydroentangling, needle punching, or hot rolling reinforcement, and finally finishing The resulting non-woven fabric. A new type of fiber product with soft, breathable and flat structure. The advantage is that it does not produce fiber debris, is strong, durable, and silky soft. It is also a kind of reinforcing material, and it has a cotton feel. Compared with cotton fabrics, non-woven The cloth bag is easy to form and inexpensive to manufacture. Advantages: 1. Lightweight: Polypropylene resin is used as the main raw material for production. The specific gravity is only 0.9, which is only three-fifths of cotton. It is fluffy and feels good. 2. Soft: It is composed of fine fibers (2-3D) and is formed by light-point hot-melt bonding. The finished product is moderately soft and comfortable. 3. Water-repellent and breathable: Polypropylene slices do not absorb water, have zero moisture content, and have good water-repellent properties. It is composed of 100% fibers and has good air permeability. It is easy to keep the cloth dry and easy to wash.
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