The fibers used in producing nonwoven fabrics are mainly polypropylene (PP) and polyester (PET). In addition, there are nylon (PA), viscose fiber, acrylic fiber, polyethene fiber (HDPE), and chlorine fibre (PVC). According to application requirements, nonwoven fabrics are divided into disposable application and durable types. According to the production process, nonwoven fabrics are mainly divided into the following types.
1. Spunlace nonwoven fabric
The spunlace process is to spray a high-pressure fine water stream onto one or more layers of fiber webs to entangle the fibres with each other so that the fiber webs can be reinforced and have a certain strength.
2. Heat-sealing nonwoven fabric
Thermal bonding nonwoven fabric adds fibrous or powdery hot-melt bonding material to the fiber web. The fiber web is heated, melted and cooled to be consolidated into a cloth.
3. Pulp air-laid nonwoven fabric
Airlaid nonwoven fabrics can also be called dust-free paper and dry-laid nonwoven fabrics. It uses air-laid technology to open the wood pulp fiberboard into a single fiber state. It then uses the air-flow method to agglomerate the fibers on the web surface and reinforces the fiber web into a cloth.
4. Wet nonwoven fabric
The wet-laid nonwoven fabric is to open the fiber raw materials placed in the water medium into single fibers, and at the same time mix different fiber raw materials to form a fiber suspension slurry, which is transported to a web forming mechanism, and the fibers are formed into a web in a wet state.
5. Spunbond nonwoven fabric
Spunbond nonwoven fabrics are formed after the polymer has been extruded and stretched to form continuous filaments. The filaments are laid into a net. The fiber net is then bonded, thermally bonded, chemically bonded or mechanically reinforced to make The web a nonwoven fabric.
6. Meltblown nonwoven fabric
The process of meltblown nonwoven fabric: polymer feeding-melt extrusion-fiber formation-fiber cooling-net formation-reinforcement into cloth.
7. Needle punched nonwoven fabric
Needle-punched nonwoven fabrics are a kind of dry-laid nonwoven fabrics. Needle-punched nonwoven fabrics use the puncture effect of needles to reinforce the fluffy web into a fabric.
8. Stitched nonwoven fabric
Stitched nonwoven fabrics are a kind of dry-laid nonwoven fabrics. The stitching method uses a warp-knitted loop structure to couple fiber webs, yarn layers, nonwoven materials (such as plastic sheets, plastic thin metal foils, etc.) or their combination. The body is reinforced to make a nonwoven fabric.
9. Absorbent Non-woven fabric
Absorbent nonwoven fabric is mainly used in medical and sanitary materials, and the product feels good and will not scratch the skin. Sanitary napkins and sanitary pads use the hydrophilic function of absorbent nonwoven fabrics.
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