The needled fabric is made with a needle machine. The fiber web previously formed by carding, ballistic or air-laying is fed into a machine equipped with a special knitting needle. The knitting needle with a crochet needle penetrates the fiber net up and down to re-seat the fibers so that a mechanical bond is formed between the fibers. . Spunbonded fabrics are long filaments that are extruded through a spinneret and are pressed by hot pressing, mechanical or chemical agglomeration. The fused fabric is a fibrous web prepared by continuous long fibers or short fibers extruded through a spinneret, and is prepared by blending a certain amount of low-melting-point fibers therein and rolling and bonding them by hot roll heating. what is needle punch fabric
Acupuncture can produce fabrics with different thicknesses and grammage, certain bulkiness, high porosity, good vertical and horizontal water permeability, especially suitable for drainage and anti-bonding materials, and other industrial and daily use. what is needle punch fabric
The spunbond method can produce a fabric with a small thickness and high strength and good water permeability. In addition, it has become one of the fastest growing methods in the textile industry due to its small number of manufacturing steps, high production speed, low cost, and wide range of uses. . Because of these advantages, this geotextile can be applied in various projects such as drainage, anti-pulling, reinforcement, impact prevention and isolation. what is needle punch fabric
The commonly used admixtures in bituminous films mainly include fillers and fibers, sometimes incorporating certain elastomeric materials. The filler is a fine-grained mineral powder, whose role is to increase the stiffness of the membrane material and also reduce the cost. Commonly used mineral powders include limestone powder, talcum powder, mica, fly ash, and graphite. The dosage is within 60% of the total weight of the bitumen and ore, generally 30%. Fiber is generally made of asbestos or glass wool, and its role is to increase the strength of the film material. The elastic material often uses recycled rubber powder, etc., and the amount is generally 5% of a clever percent, and its function is to improve the physical properties of the film material or enhance the crack resistance.
Additives in polymers include fillers, fibers, modifiers, plasticizers, carbon inks, antioxidants, stabilizers, and bactericides. The fillers are the above-mentioned various mineral powders and the like. Commonly used fibers are glass wool, polyester, or nylon staple fibers. The effect of these two additives is the same as that of the fibers in asphalt. Others have a variety of different effects. The modifier is to enhance or soften the rhenium compound in the process of making the film material; the plasticizer is used to increase the flexibility of the film material; the carbon ink enhances the anti-ultraviolet aging property of the film material; various stabilizers and antioxidants can also enhance the film. The material is resistant to aging effects such as ultraviolet light and ozone, and keeps the mixture stable during the manufacturing process; the bactericide is used to prevent the erosion of the polymer film by bacteria and fungi.
Non-woven mask manufacturers
It uses high melting fat and polypropylene as raw materials, has good toughness, high filterability and soft hand feeling; high air permeability, high water pressure resistance, high strength, can block and block dust, particles, alcohol, plasma,