Non-woven Fabric (English name: non-woven Fabric or Nonwoven cloth) also known as non-woven cloth, is composed of directional or random fibers.It is called cloth because of its appearance and certain properties.
Non-woven fabrics are moisture-proof, breathable, flexible, light, non-combustion-supporting, easy to decompose, non-toxic and non-irritating, colorful, cheap, recyclable and other characteristics.Such as the use of polypropylene (pp material) as raw material, through high temperature melting, spinneret, shop, hot press-coiling continuous one-step production
The main features
Non-woven fabric has no warp and weft thread, it is very convenient for cutting and sewing, and it is light and easy to set the shape, so it is very popular among craft lovers.
Because it is a kind of fabric that does not need spinning and weaving, it is directional or random arrangement of textile short fiber or filament to form fiber network structure, and then use mechanical, thermal adhesion or chemical methods to reinforce and become.
It is not made up of yarn interwoven and woven together. Instead, the fibers are glued together directly through physical means, so when you get the sticky tape in your clothes, you will find that you can't pull out the threads.Nonwovens break through the traditional textile principle, and have the characteristics of short process flow, fast production rate, high yield, low cost, wide application and many sources of raw materials.
Advantages
1.Light weight: with polypropylene resin as the main raw material, the proportion is only 0.9, only three fifths of the cotton, with fluffy, feel good.
2.Soft: made of fine fiber (2-3d) light spot hot melt bond forming.Product softness moderate, with comfort.
3.Water diversion and air permeability: polypropylene slices do not absorb water and have zero moisture content. The finished product has good water diversion. It is composed of 100% fiber with porosity and good air permeability.
4.Non-toxic, non-irritating: the product is made of food grade raw materials conforming to FDA, without other chemical ingredients, stable performance, non-toxic, odor-free and non-irritating to the skin.
5.Antibacterial, anti-chemical agents: polypropylene is a chemical blunt substance, not moth, and can isolate the presence of liquid bacteria and insect erosion;Antibacterial, alkali corrosion, finished products do not affect the strength due to erosion.
6.Antimicrobial properties.Products with water, not moldy, and can isolate the presence of liquid bacteria and insects erosion, not moldy moth.
7.Physical properties.By polypropylene spinning directly into the net hot bond, the strength of the product is better than the general staple fiber products, the strength of the non-directional, vertical and horizontal strength is similar.
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8.In terms of environmental protection, the raw material of most non-woven fabrics used is polypropylene, while the raw material of plastic bags is polyethylene. Although the two materials have similar names, they are quite different in chemical structure.The chemical molecular structure of polyethylene has very strong stability and is extremely difficult to degrade, so it will take 300 years to decompose the plastic bags.Polypropylene, on the other hand, has a weak chemical structure and molecular chains that break easily, allowing for efficient degradation and the next environmental cycle in a non-toxic form. A non-woven shopping bag can be completely decomposed in 90 days.Moreover, non-woven shopping bags can be reused more than 10 times, and the pollution to the environment after being discarded is only 10% of that of plastic bags.
Disadvantages
1) poor strength and durability compared with textile fabrics.
2) cannot be washed like other fabrics.
3) the fibers are arranged in a certain direction so that they tend to split at right angles, etc.Therefore, the improvement of production methods is mainly focused on the improvement of preventing fragmentation.
The three main fibers used in the production of non-woven fabrics are polypropylene (62%), polyester (24%) and viscose (8%).Between 1970 and 1985, viscose fiber was widely used in the production of non-woven fabrics.Between 2000 and 2005, the application of polypropylene fiber and polyester fiber became dominant in the field of sanitary absorbent materials and pharmaceutical textiles.In the early non-woven market, nylon was used heavily, and since 1998, the use of acrylic fibers has increased, especially in the field of artificial leather manufacturing.
There are many huge projects in China, such as the three gorges project, the xiaolangdi project, the environmental protection project, the development of the western region, and the infrastructure construction, which will greatly promote the consumption of geotextiles, filter materials, waterproof materials and packaging materials.In addition, the increase in the income of domestic consumers will also strongly stimulate the consumption of various sanitary absorbent products and air filtration materials, medical and health supplies and labor insurance stationery and sports supplies.Therefore, China's non-woven fabric industry has great growth potential in the future.
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