Based on the production process is divided into:
1. Hydroentanglement nonwoven fabrics: hydroentanglement process is a high-pressure micro-fine water jet to one or more layers of fibers on the fiber network, the fibers are entangled with each other, so that the fiber network can be reinforced with a certain strength.
2. Thermally bonded nonwoven fabrics: thermally bonded nonwoven fabrics is the fiber network in the addition of fiber or powder hot melt bonding reinforcement materials, fiber network and then heated and melted and cooled to reinforce the cloth.
3. Pulp airflow into the net nonwoven fabric: airflow into the net nonwoven fabric can also be called as dustless paper, dry paper nonwoven fabric. It is the use of airflow into the network technology will be wood pulp fiber board open into a single fiber state, and then use the airflow method to make the fiber coagulation in the net curtain, the fiber network and then reinforced into the cloth.
4. Wet nonwoven fabric: wet nonwoven fabric is placed in the water medium fiber raw materials into a single fiber open, while making different fiber raw materials mixed, made of fiber suspension pulp, suspension pulp transported to the netting mechanism, the fiber in the wet state into the net and then reinforced into cloth.
5. Spunbond nonwoven fabrics: spunbond nonwoven fabrics are in the polymer has been extruded, stretched to form continuous filaments, filaments laid into a network, fiber network and then after its own bonding, thermal bonding, chemical bonding or mechanical reinforcement methods, so that the fiber network into a nonwoven fabric.
6. Meltblown nonwoven fabrics: meltblown nonwoven fabrics process: polymer feeding --- melt extrusion --- fiber formation --- fiber cooling --- into the network --- reinforcement of cloth.
7. Needle-punched nonwoven fabrics: needle-punched nonwoven fabrics is a kind of dry nonwoven fabrics, needle-punched nonwoven fabrics is the use of felting needles puncture, the fluffy fiber mesh reinforcement into cloth.
8. Sewn Nonwoven Fabric: Sewn Nonwoven Fabric is a kind of dry nonwoven fabric, sewing method is the use of warp knitting coil structure on the fiber mesh, yarn layer, non-textile materials (such as plastic sheet, plastic thin metal foil, etc.) or a combination of them for reinforcement, in order to make nonwoven fabric.
9. Hydrophilic nonwoven fabrics: mainly used in the production of medical and hygienic materials, in order to achieve a better feel and not scratch the skin. Like sanitary napkins, sanitary pads is the use of hydrophilic nonwoven hydrophilic function.
Nonwoven fabric (English name: Non Woven Fabric or Nonwoven cloth), also known as non-woven fabric, is composed of directional or random fibers, is a new generation of environmentally friendly materials, moisture-proof, breathable, flexible, lightweight, non-combustible, easy to decompose, non-toxic, non-irritant, colorful, inexpensive, recyclable and so on. Such as more polypropylene (pp material) granules as raw materials, through high-temperature melting, spraying, laying outline, hot pressing and winding continuous one-step production and become. Because it has the appearance of cloth and certain properties and called it cloth.
Advantages:
1. Lightweight: polypropylene resin as the main raw material, the specific gravity is only 0.9, only three-fifths of cotton, with a fluffy, feel good.
2. Soft: composed of fine fibers (2-3D) light point-like hot melt bonding molding. The finished product is moderately soft and comfortable.
3. Water-repellent, breathable: polypropylene chips do not absorb water, water content of zero, the finished water-repellent good, composed of 100% fiber with porous, breathable, easy to keep the cloth dry, easy to wash.
4. Non-toxic, non-irritating: the product is made of FDA food-grade raw materials, does not contain other chemical components, stable performance, non-toxic, no odor, does not stimulate the skin.
5. Antibacterial, anti-chemical agents: polypropylene is a chemical passive substance, not insect, and can isolate the presence of bacteria and insects within the liquid erosion; anti-bacterial, alkali corrosion, the finished product does not affect the strength of the strength due to erosion.
6. Antibacterial. Products with water pulling, not moldy, and can isolate the existence of bacteria and insects in the liquid erosion, not moldy.
7. Good physical properties. Spun by the polypropylene directly laid into a network of hot bonding, product strength is better than the general short-fiber products, strength is not directional, longitudinal and transverse strength is similar.
8. In terms of environmental protection, the use of most of the raw materials of non-woven fabrics is polypropylene, while the raw material of plastic bags is polyethylene, two substances, although the name is similar, but in the chemical structure is very different. The chemical molecular structure of polyethylene has a fairly strong stability, extremely difficult to degrade, so the plastic bag needs 300 years to decompose; while the chemical structure of polypropylene is not strong, the molecular chain can be easily broken, which can be effectively degraded, and in a non-toxic form to enter the next step of the environmental cycle, a non-woven shopping bags in 90 days can be completely decomposed. And non-woven shopping bags can be reused more than 10 times, after the disposal of environmental pollution is only 10% of plastic bags.
Disadvantages:
1) Compared with textile fabric strength and durability is poor.
2) Cannot be washed like other fabrics.
3) The fibers are arranged in a certain direction, so it is easy to split at right angles. Therefore, the improvement of the production method is mainly focused on the improvement of the prevention of splitting.