The use and classification of non-woven fabrics

Uses of non-woven fabrics: non-woven fabrics are rich in color, bright and bright, fashionable and environmentally friendly, versatile, beautiful, and diverse in patterns and styles, and are light, environmentally friendly, and recyclable. They are internationally recognized as protecting the earth’s ecology Environmentally friendly products. Because it looks like a pearl, it is also called a pearl canvas. Non-woven fabrics are made of chemical fibers and plant fibers on wet or dry papermaking machines under the condition of water or air as the suspension medium. Although they are cloth and are not woven, they are called non-woven fabrics. Non-woven fabric is a new generation of environmentally friendly materials, which has the advantages of good strength, breathable and waterproof, environmental protection, flexibility, non-toxic and tasteless, and low price. It is a new generation of environmentally friendly materials with the characteristics of water repellency, breathability, flexibility, non-combustibility, non-toxic and non-irritating, and rich colors. If the material is placed outdoors and decomposed naturally, its longest life span is only 90 days, and it decomposes within 8 years when placed indoors. It is non-toxic, odorless, and without any remaining substances when burned. (1) Medical and sanitary non-woven fabrics: surgical gowns, protective clothing, disinfection wraps, masks, diapers, civilian wipes, wipes, wet face towels, magic towels, soft towel rolls, beauty products, sanitary napkins, sanitary care Pads, and disposable sanitary cloths, etc. (2) Non-woven fabrics for home decoration: wall coverings, table cloths, bed sheets, bedspreads, etc. (3) Non-woven fabrics for clothing: linings, fusible interlinings, wadding, shaped cotton, various synthetic leather base fabrics, etc. (4) Industrial non-woven fabrics; base materials, reinforcement materials, polishing materials, filter materials, insulating materials, cement packaging bags, geotextiles, and covering fabrics for roofing waterproof membranes and asphalt shingles. (5) Agricultural non-woven fabrics: crop protection cloth, seedling raising cloth, irrigation cloth, thermal insulation curtain, etc. (6) Other non-woven fabrics: space cotton, thermal insulation materials, linoleum, cigarette filters, tea bags, shoe materials, etc. Non-woven fabric classification: non-woven fabric production fibers are mainly polypropylene (PP), polyester ( PET). In addition, there are nylon (PA), viscose, acrylic, polyethylene (HDPE), and chlorinated fiber (PVC). According to application requirements, non-woven fabrics are divided into two categories: disposable application type and durable type. According to the production process, it is divided into: Spunlace non-woven fabric: The spunlace process sprays high-pressure fine water onto one or more layers of fiber webs to entangle the fibers with each other, so that the fiber webs can be reinforced and have a certain strength. Thermally bonded non-woven fabric: Thermally bonded non-woven fabric refers to the addition of fibrous or powdery hot-melt adhesive reinforcement materials to the fiber web, and the fiber web is heated, melted and cooled to be consolidated into a fabric. Pulp air-laid non-woven fabric: Air-laid non-woven fabric can also be called dust-free paper and dry paper-making non-woven fabric. It uses air-laid technology to open the wood pulp fiberboard into a single fiber state, and then uses the air-flow method to agglomerate the fibers on the web curtain, and then strengthen the fiber web into a cloth. Wet-laid non-woven fabrics: Wet-laid non-woven fabrics are used to open fiber raw materials placed in an aqueous medium into single fibers, and at the same time mix different fiber raw materials to form a fiber suspension slurry, which is transported to the web forming mechanism, and the fibers are In the wet state, a net is formed and then reinforced into a cloth. Spunbond non-woven fabric: Spunbond non-woven fabric is formed after the polymer has been extruded and stretched to form continuous filaments, the filaments are laid into a web, and the web is bonded by itself, thermally bonded, and chemically bonded. Or mechanical reinforcement method to make the web into a non-woven fabric. Melt-blown non-woven fabric: The process of melt-blown non-woven fabric: polymer feeding---melt extrusion---fiber formation---fiber cooling---web formation---reinforcement into fabric. Needle-punched non-woven fabrics: Needle-punched non-woven fabrics are a kind of dry-laid non-woven fabrics. Needle-punched non-woven fabrics use the puncture effect of needles to reinforce the fluffy web into a fabric. Stitched non-woven fabric: Stitched non-woven fabric is a kind of dry non-woven fabric. The stitching method uses the warp-knitted loop structure to align the fiber web, yarn layer, and non-woven materials (such as plastic sheet, plastic thin metal foil). Etc.) or their combination to be reinforced to make a non-woven fabric. Hydrophilic non-woven fabric: mainly used in the production of medical and sanitary materials to achieve better hand feeling and not scratch the skin. For example, sanitary napkins and sanitary pads use the hydrophilic function of hydrophilic non-woven fabric.