What is non-woven fabric?

Non-woven fabric Nonwoven cloth, 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.
The non-woven fabric has no warp and weft threads, it is very convenient to cut and sew, and it is light 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, and then use mechanical, thermal bonding or chemical methods to strengthen it.
It is not made of interwoven and knitted yarns one by one, but the fibers are directly bonded together by physical methods, so 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 fabric and spunbond fabric

Spunbond fabric and non-woven fabric are subordinate. There are many production processes for the manufacture of non-woven fabrics, among which spunbond method is one of the non-woven fabric production processes
(Including spunbond method, meltblown method, hot rolling method, spunlace method, most of the non-woven fabrics on the market are produced by spunbond method)
According to the composition of non-woven fabrics, there are polyester, polypropylene, nylon, spandex, acrylic, etc.; different components will have completely different styles of non-woven fabrics. The spunbond fabric usually refers to polyester spunbond and polypropylene spunbond; and the styles of these two fabrics are very similar, which 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, non-woven The cloth bag is easy to form and inexpensive to manufacture.

advantage:
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 lightly hot-melt bonding. The finished product is moderately soft and comfortable.
3. Water repellent and breathable: Polypropylene slices do not absorb water, have zero water content, and have good water repellency. The 100% fiber composition is porous and has good air permeability. 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, is non-toxic, non-odor, and does not irritate the skin.
5. Antibacterial and anti-chemical agents: Polypropylene is a chemically blunt substance, not moth-eaten, and can isolate the corrosion of bacteria and insects in the liquid; antibacterial, alkali corrosion, and the strength of the finished product will not be affected by erosion.
6. Antibacterial. The product is water-repellent, 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 spun yarn and directly spread into a net and thermally bonded. The strength of the product is better than that of ordinary staple fiber products.
8. In terms of environmental protection, the raw material of most of the non-woven fabrics used is polypropylene, while the raw material of plastic bags is polyethylene. Although the names of the two substances are similar, the chemical structure is far different. The chemical molecular structure of polyethylene is very stable and extremely difficult to decompose, so it takes 300 years for plastic bags to be decomposed; while the chemical structure of polypropylene is not strong, the molecular chain can easily be 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, the non-woven shopping bag can be reused more than 10 times, and the pollution to the environment after being discarded is only 10% of the plastic bag.

Disadvantages:
1) Compared with woven cloth, the strength and durability are poor.
2) Cannot be cleaned like other fabrics.
3) The fibers are arranged in a certain direction, so it is easy to split from the right angle direction and so on. Therefore, the improvement of the production method mainly focuses on the improvement of preventing splitting.