Shoe Material Identification: Nonwoven Knowledge Encyclopedia

　　 Non-woven fabrics Also called nonwovens, it is made of directional or random fibers. It is a new generation of environmentally-friendly materials. It has the characteristics of moisture-proof, breathable, flexible, light weight, no combustion supporting, easy to decompose, non-toxic, non irritating, rich in color, low in price and recyclable. If polypropylene (PP) pellet is used as raw material, it can be produced by continuous melting, spinning, spreading and hot pressing. It is called cloth because of its appearance and some properties.

　　 Characteristic

There are no warp and weft threads in non-woven fabrics. They are very convenient for cutting and sewing. They are light and easy to set. manual Enthusiasts love it. Because it is a fabric that does not need spinning and weaving. It is only directional or random arrangement of textile staple fibers or filaments, forming a web structure, and then strengthened by mechanical, thermal or chemical methods.

It is not interwoven or woven together by a single yarn. Instead, it is glued together directly by physical means, so when you get it, clothes When it is called sticky, it will be unable to extract a thread. Nonwoven fabrics break through the traditional textile principle, and have the characteristics of short process flow, fast production speed, high yield, low cost, wide use, and many raw materials.

　 Advantage

1. light quality: polypropylene resin as the main raw material, the proportion is only 0.9, only 3/5 of cotton, with fluffy, good handle.

2. soft: made of fine fibers (2-3D), light point hot melt forming. The finished products are of moderate softness and comfort.

3. dial water and breathable: polypropylene chips do not absorb water, moisture content is zero, finished products dial water is good, composed of 100% fibers porous, breathable, easy to keep cloth dry and easy to wash.

4. innocuity and no irritation: the products are produced in accordance with FDA food grade raw materials, without other chemical components, stable performance, non-toxic, no peculiar smell, and do not irritate the skin.

5. antibacterial and anti chemical agents: polypropylene is a chemical blunt substance, which is not moth eaten, and can isolate bacteria and insect pests in liquid. Antibacterial, alkali corrosion and finished products do not affect strength due to erosion.

6. antibacterial property. The products are water extraction, non moldy, and can isolate bacteria and insect pests in the liquid.

7. good physical properties. Polypropylene is directly woven into the mesh and bonded with heat. The strength of the product is better than that of the general staple fiber, and the strength is not directional.

8. in terms of environmental protection, most non-woven fabrics are made of polypropylene, while the raw materials of plastic bags are polyethylene. Although the names of the two substances are similar, they are far different in chemical structure. The chemical and molecular structure of polyethylene is quite stable and extremely difficult to degrade, so it takes 300 years to decompose plastic bags. The chemical structure of polypropylene is not stable, and the molecular chain can break easily, so that it can be effectively degraded. In a non-toxic form, the non-woven shopping bags can be thoroughly decomposed within 90 days. Moreover, the non-woven shopping bags can be reused more than 10 times, and the environmental pollution after abandonment is only 10% of that of plastic bags.