What are the characteristics and advantages of non-woven fabrics?
Non woven fabric, also known as non-woven fabric, needle punched cotton, needle punched non-woven fabric, etc., is produced from polyester fiber, polyester fiber (PET) material, and is made through needle punching technology. It can be made in different thicknesses, feel, hardness, etc.
Non woven fabrics have the characteristics of moisture resistance, breathability, flexibility, lightness, flame retardancy, non-toxic and odorless, low price, and recyclability. Can be used in different industries, such as sound insulation, insulation, electric heating pads, masks, clothing, medical, filling materials, etc
Non woven fabrics do not have warp and weft threads, making them very convenient to cut and sew. They are also lightweight and easy to shape, making them popular among handicraft enthusiasts.
Because it is a fabric formed without the need for spinning and weaving, it simply orients or randomly arranges textile short fibers or filaments to form a fiber network structure, which is then reinforced by mechanical, thermal adhesive, or chemical methods.
It is not made up of interwoven or woven yarns one by one, but rather of fibers directly bonded together through physical methods. Therefore, when you take the adhesive lining in your clothes, you will find that it cannot extract thread ends one by one. Non woven fabrics break through traditional textile principles and have the characteristics of short process flow, fast production rate, high yield, low cost, wide use, and multiple sources of raw materials.
Non woven fabric is a type of non-woven fabric that directly uses polymer chips, short fibers, or filaments to form fibers into a web through airflow or mechanical means, then undergoes water pricking, needling, or hot rolling reinforcement, and finally undergoes post-processing to form a non-woven fabric. A new type of fiber product with soft, breathable, and flat structure has the advantage of not producing fiber chips, being strong, durable, and silky soft. It is also a type of reinforcing material, and has a cotton feel. Compared with cotton fabrics, non-woven bags are easier to form and have a lower cost.
Advantages:
1. Lightweight: Polypropylene resin is the main production raw material, with a specific gravity of only 0.9, which is only three-fifths that of cotton. It has fluffiness and a good feel.
2. Soft: Made of fine fibers (2-3D), it is formed by lightweight hot melt bonding. The finished product has moderate softness and a comfortable feeling.
3. Water absorption and breathability: Polypropylene chips do not absorb water, have zero moisture content, and the finished product has good water absorption performance. It is composed of 100% fibers and has porosity, good breathability, and is easy to keep the cloth surface dry and easy to wash.
4. It can purify the air and use the advantage of small pores to keep bacteria and viruses out.
5. Non toxic and non irritating: The product is produced using FDA compliant food grade raw materials, free from other chemical components, stable in performance, non-toxic, odorless, and non irritating to the skin.
6. Antibacterial and anti chemical agents: Polypropylene is a chemically inert substance that is not infested by insects and can isolate bacteria and insects present in the liquid; Antibacterial, alkaline corrosion, and the strength of the finished product is not affected by erosion.
7. Antibacterial properties. The product has water repellency, is not moldy, and can isolate the erosion of bacteria and insects in the liquid, and is not moldy.
8. Good physical properties. Made by directly laying polypropylene fibers into a mesh and hot bonding, the strength of the product is better than that of ordinary short fiber products, with no directional strength and similar longitudinal and transverse strength.
In terms of environmental protection, most of the raw materials used for non-woven fabrics are polypropylene, while the raw material for plastic bags is polyethylene. Although the names of the two substances are similar, their chemical structures are very different. The chemical molecular structure of polyethylene has strong stability and is extremely difficult to degrade, so it takes 300 years for plastic bags to decompose completely; The chemical structure of polypropylene is not strong, and the molecular chains can easily break, which can effectively degrade 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 pollution level to the environment after disposal is only 10% of that of plastic bags.
Disadvantages:
1. Compared with textile fabrics, the strength and durability are poor.
2. It cannot be cleaned like other fabrics.
3. The fibers are arranged in a certain direction, so they are easy to crack from a right angle, and so on. Therefore, the improvement of production methods is mainly focused on improving the prevention of splitting.