The main fibers used in non-woven fabric production are polypropylene (PP) and polyester (PET). In addition, there are also nylon (PA), viscose fibers, acrylic, ethylene (HDPE), and chloroprene (PVC). According to application requirements, non-woven fabrics are divided into two categories: disposable and durable.
According to the production process, it is divided into:
1. Spinning non-woven fabric: Spinning process involves spraying high-pressure micro water flow onto one or more layers of fiber mesh, causing the fibers to intertwine and strengthen the mesh to a certain degree of strength.
2. Heat bonded non-woven fabric: Heat bonded non-woven fabric refers to the addition of fibrous or powdery hot melt bonding reinforcement materials to the fiber mesh, which is then heated, melted, and cooled to form a fabric.
3. Pulp air flow net forming non-woven fabric: Air flow net forming non-woven fabric can also be called dust-free paper or dry papermaking non-woven fabric. It uses air flow mesh technology to loosen the wood pulp fiberboard into a single fiber state, and then uses air flow method to aggregate the fibers on the mesh curtain, and the fiber mesh is reinforced into a cloth.
4. Wet non-woven fabric: Wet non-woven fabric is a process of loosening fiber raw materials placed in a water medium into single fibers, and mixing different fiber raw materials to create a fiber suspension slurry. The suspension slurry is transported to a web forming mechanism, and the fibers are then reinforced into a fabric in a wet state.
5. Spunbonded non-woven fabric: Spunbonded non-woven fabric is a type of non-woven fabric that is formed by extruding and stretching polymers into continuous filaments, which are laid into a web. The web is then self bonded, thermally bonded, chemically bonded, or mechanically reinforced to turn the web into non-woven fabric.
6. Melt blown non-woven fabric: The process of melt blown non-woven fabric includes polymer feeding, melt extrusion, fiber formation, fiber cooling, mesh formation, and reinforcement.
7. Needle punched non-woven fabric: Needle punched non-woven fabric is a type of dry process non-woven fabric, which uses the puncture effect of needles to reinforce the fluffy fiber mesh into a fabric.
8. Stitching non-woven fabric: Stitching non-woven fabric is a type of dry process non-woven fabric, which uses the warp knitted coil structure to reinforce the fiber mesh, yarn layer, non-woven materials (such as plastic sheets, plastic thin metal foil, etc.) or their combination to make non-woven fabric.
9. Hydrophilic non-woven fabric: mainly used in the production of medical and health materials to achieve better hand feel and avoid scratching the skin. Sanitary napkins and sanitary pads utilize the hydrophilic function of non-woven fabrics.