What are the advantages and disadvantages of non-woven fabrics?
Non-woven fabric is a kind of non-woven fabric. It uses high-refractive-index slices, short fibers or filaments to form fibers through airflow or mechanical, and then is reinforced by spunlacing, needle punching, or hot rolling, and finally after finishing The new fiber products with soft, breathable and flat structure have the advantages that they do not produce fibrous debris, are tough, durable, and are silky and soft. They are also a kind of reinforcing material, and they also have a cotton feel, which is proportional to cotton fabrics and non-woven. Cloth bags are easy to form and cheap to manufacture.
advantage:
1. Lightweight: Polypropylene resin is the main raw material for production, with a specific gravity of only 0.9, only three-fifths of cotton, with fluffiness and good feel.
2. Softness: It is composed of fine fibers (2-3D), light spot-like hot-melt bonding molding. The finished product is moderately soft and comfortable.
3. Water-repellent and breathable: polypropylene chips are non-absorbent and have zero water content. The finished product has good water-repellent properties and is composed of 100% fiber. It is porous and has good breathability. It is easy to keep the cloth dry and easy to wash.
4. Non-toxic and non-irritating: the product is produced with FDA food-grade raw materials, does not contain other chemical ingredients, has stable performance, non-toxic, non-odor, and does not irritate the skin.
5. Antibacterial and anti-chemical agents: Polypropylene is a chemically passive substance, not moth-eaten, and can isolate the erosion of bacteria and insects in the liquid; antibacterial, alkali corrosion, and finished products do not affect the strength due to erosion.
6. Antibacterial properties. The product is water-removing, not moldy, and can isolate the erosion of bacteria and insects in the liquid, and is not moldy.
7. Good physical properties. It is made of polypropylene spinning directly laid into a mesh and thermally bonded. The strength of the product is better than that of ordinary staple fiber products. The strength is non-directional and the strength in the vertical and horizontal directions is similar.
8. In terms of environmental protection, the raw material used for most non-woven fabrics is polypropylene, while the raw material for plastic bags is polyethylene. Although the two substances have similar names, they are far from each other in chemical structure. The chemical molecular structure of polyethylene is quite stable and extremely difficult to degrade, so it takes 300 years for the plastic bag to decompose; and the chemical structure of polypropylene is not strong, and the molecular chain can be easily broken, which can be effectively degraded And enter the next environmental cycle in a non-toxic form, a non-woven shopping bag can be completely decomposed within 90 days. Moreover, non-woven shopping bags can be reused more than 10 times, and the environmental pollution after disposal is only 10% of the plastic bags.
Disadvantages:
1) Compared with woven cloth, the strength and durability are poor.
2) It cannot be washed like other fabrics.
3) The fibers are arranged in a certain direction, so it is easy to split from the right angle and so on. Therefore, the improvement of production methods is mainly placed on the improvement of preventing division.
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