What are the processes for non-woven fabric bags

The main material of non-woven bags (environmentally friendly bags) is non-woven fabric. Non woven fabric is a type of non-woven fabric that directly utilizes polymer chips, short fibers, or filaments to form a new type of fiber product with soft, breathable, and flat structure through various fiber mesh forming methods and consolidation techniques.

Process classification of non-woven fabric bags (environmentally friendly bags)

According to different production processes, it can be divided into:

1. Spunlaced non-woven fabric: Spunlaced process involves spraying high-pressure micro water onto one or multiple layers of fiber mesh, causing the fibers to intertwine and strengthen the fiber 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 powdered 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 paper making non-woven fabric. It uses airflow mesh forming technology to loosen the wood pulp fiberboard into a single fiber state, and then uses airflow method to aggregate the fibers onto 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 mesh forming mechanism, and the fibers are formed into a mesh in the wet state and then reinforced into a fabric.

5. Spunbonded non-woven fabric: Spunbonded non-woven fabric is a continuous filament formed by the extrusion and stretching of polymers, which is 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 forming - reinforcement into fabric.

7. Needled non-woven fabric: Needled non-woven fabric is a type of dry process non-woven fabric that utilizes the puncture effect of a needle to reinforce a 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 warp knitted coil structure to reinforce fiber mesh, yarn layer, non-woven materials (such as plastic sheets, plastic thin metal foil, etc.) or their combination to make non-woven fabric.