Non-woven Fabric

Overview Non-woven fabric (English name: Non Woven), also known as non-woven fabric, is composed of directional or random fibers. It is a new generation of environmentally friendly materials. It is moisture-proof, breathable, flexible, light, non-combustible, easy to decompose, and non-toxic. Non-irritating, colorful, inexpensive, recyclable and so on. For example, polypropylene (pp material) pellets are used as raw materials, and are produced by a continuous one-step method of high temperature melting, spinning, laying, and hot pressing and coiling. It is called cloth because of its appearance and certain properties.

The producers of non-woven fabrics are mainly concentrated in the United States (41% of the world), Western Europe accounts for 30%, Japan accounts for 8%, China's production only accounts for 3.5% of the world's production, but its consumption is 17.5% of the world's . It is estimated that by 2007, China's production will reach 7% of the world's production, and its consumption will increase to 21% of the world's.

At present, man-made fibers still dominate the production of nonwovens, and before 2007, this situation will not change significantly. 63% of the fibers used in the production of nonwovens worldwide are polypropylene, 23% polyester, 8% viscose, 2% acrylic, 1.5% polyamide and the remaining 3% are others fiber.

In recent years, the application of non-woven fabrics in sanitary absorbent materials, medical, transportation, and shoe-making textile materials has increased significantly.

2. Production and consumption of non-woven fabrics

The global consumption of non-woven fabrics was 800,000 tons in 1983, and increased to 110 tons in 1985, 1.4 million tons in 1988, and 2.4 million tons in 1998. It is estimated that by 2005 Annual, its consumption can reach 3.7 million tons.

The consumption of man-made fibers used in various textiles was 16.9 million tons in 1983, increased to 20.4 million tons in 1988, and reached 30.4 million tons in 1998. It is estimated that by 2005, its consumption will be 37 million tons. It can reach 38.3 million tons per year.

The consumption growth rate of man-made fibers in non-woven production is expected to reach 10% in 2005 and 10.4% in 2007. Part of the reason for such rapid growth in consumption in the nonwovens industry is the increase in ancillary industries in China, Southeast Asia, Latin America and the Middle East.

3. Factors that affect the growth rate of non-woven fabrics--

All factors that affect the growth of man-made fibers can more or less have a certain impact on textiles made of man-made fibers, among which non-woven textiles have the greatest impact. Population growth factors have less impact on non-woven fabrics than other textiles used for apparel. But if one considers the important application of nonwovens in baby diapers, population growth is also an important factor. The replacement of natural fibers has a greater impact on textiles, but has little impact on non-woven fabrics, because the production of non-woven fabrics basically depends on man-made fibers.

Commercial development of man-made fibers and professional application of non-woven fabrics: Due to the establishment of international economic treaties, the trade in microfibers, composite fibers, biodegradable fibers and new polyester fibers has grown. This has a great impact on non-woven fabrics, but has little impact on apparel and knitted textiles. Substitution of textiles and other items: This includes substitution by non-woven textiles, knitted textiles, plastic films, polyurea foam, wood pulp, leather, etc. This is determined by the cost and performance requirements that the product needs to have. The introduction of new, more economical and efficient production processes: namely, various articles made from polymers, the application of new competitive non-woven fabrics, and the introduction of special fibers and additives for non-woven textiles.

The three major fibers used in non-woven production are polypropylene fibers (62% of the total), polyester fibers (24% of the total) and viscose fibers (8% of the total). Between 1970 and 1985, viscose fibers were used the most in the production of non-woven fabrics. However, in the past five years, in the field of sanitary absorbent materials and medical textiles, the application of polypropylene fibers and polyester fibers has begun to dominate. In the early non-woven production market, nylon was used in a large amount, and since 1998, the use of acrylic fibers began to rise, especially in the field of artificial leather manufacturing.

Non-woven fabric is a kind of non-woven fabric, which directly uses polymer chips, short fibers or filaments to form fibers through air flow or machinery, and then undergoes hydroentanglement, needle punching, or hot rolling reinforcement, and finally after finishing Formed non-woven fabric. A new type of fiber product with a soft, breathable and flat structure, the advantages are that it does not produce lint, is strong, durable, silky soft, and has a cotton feel. Compared with cotton fabrics, non-woven bags are easy to form, and Cheap.

In terms of environmental protection, the raw material of most of the non-woven fabrics currently used is polypropylene, while the raw material of plastic bags is polyethylene. Although the two substances have similar names, they are quite different in chemical structure. The chemical molecular structure of polyethylene is quite stable and extremely difficult to degrade, so it takes 300 years for plastic bags to be decomposed; while the chemical structure of polypropylene is not strong, the molecular chain can be easily broken, so it can be effectively degraded , and enter the next environmental cycle in a non-toxic form, a non-woven shopping bag can be completely decomposed within 90 days. And non-woven shopping bags can be reused more than 10 times, and the pollution to the environment after disposal is only 10% of that of plastic bags

Non-woven handicraft is handmade with non-woven cloth (the picture on the right is made with non-woven cloth). Now more and more handicraft enthusiasts have joined non-woven handicraft because:

1. The non-woven material is special, thicker and harder than ordinary cloth, and the cotton cloth will not drop, which is convenient for sewing.

2. The things made of non-woven fabrics are cute and realistic, and gifts can express their feelings.

3. Non-woven fabrics come in various colors, and you can design different patterns. Non-woven books, non-woven cakes, non-woven dolls, non-woven bags... can all be made by our hands.

Medical non-woven products are medical and sanitary textiles made of chemical fibers including polyester, polyamide, polytetrafluoroethylene (PTFE), polypropylene, carbon fiber and glass fiber. Including disposable masks, protective clothing, surgical gowns, isolation gowns, lab coats, nurse caps, surgical caps, doctor caps, surgical kits, maternity kits, first aid kits, diapers, pillowcases, bed sheets, quilt covers, shoe covers and other disposable medical consumables series . Compared with traditional pure cotton woven medical textiles, medical non-woven fabrics have the characteristics of high resistance to bacteria and dust, low surgical infection rate, convenient disinfection and sterilization, and easy compounding with other materials. As disposable disposable products, medical non-woven products are not only convenient to use, safe and hygienic, but also effectively prevent bacterial infection and iatrogenic cross-infection. In my country, the investment in the medical and health industry has reached more than 100 billion yuan in recent years, of which the total output value of sanitary products and materials is about 64 billion yuan, and it is developing in the direction of diversification.

The flour bag made of non-woven fabrics has the characteristics of light weight, environmental protection, moisture-proof, breathable, flexible, flame-retardant, non-toxic and non-irritating, and can be recycled. It is used in all kinds of small packages of rice noodles, such as: wheat flour, corn flour, buckwheat flour, rice, etc. This kind of non-woven products is printed with ink, which is beautiful and elegant, with vivid colors, non-toxic, odorless, and non-volatile. Compared with ink printing, it is more environmentally friendly and clean, and fully meets the environmental protection requirements of modern people. Because of reliable product quality, affordable price and long service life. The main specifications are 1 kg, 2.5 kg, 5 kg, 10 kg and other specifications of rice and flour hardcover bags, packaging bags and so on.

Fashion shopping bags made of non-woven fabrics have the characteristics of light weight, environmental protection, moisture-proof, breathable, flexible, flame-retardant, non-toxic, non-irritating, and recyclable. They are internationally recognized as environmentally friendly products that protect the earth's ecology. Non-woven products are printed with ink, which is beautiful and elegant, with vivid colors, non-toxic, odorless and non-volatile. Compared with ink printing, it is more environmentally friendly and clean, and fully meets the environmental protection requirements of modern people.

Durable, disposable. Insulating, conducting. Softness, stiffness. fineness, expansion.

Isotropic, anisotropic. Filterability, breathable and impermeable. Elasticity, stiffness.

Light, relaxed, warm. Thin as cicada wings, thick as felt. Waterproof and breathable.

Ironing, sewing, moulding. Flame retardant, antistatic. Water-permeable, waterproof, wear-resistant, fleece.

Wrinkle resistance, good elasticity, high moisture absorption, water repellency.

Medical and health care: surgical gowns, caps, covers, gypsum cotton wool, women's sanitary napkins, baby diapers, wet face towels, sanitary underwear, dust cover.

Agriculture: Harvest cloth, greenhouse cloth.

Industry: floppy disk lining, speaker cloth, filter material, sound insulation felt for speakers, sealing ring lining, cable cloth, glass fiber reinforced plastic towel, industrial wipe, shockproof liner, insulating material, tape base lining, pipe base lining, ventilation duct, Sharpie cloth.

Packaging: composite cement bag, luggage lining, packaging base lining, quilt, storage bag, mobile jacquard luggage fabric.

Clothing and shoemaking: clothing lining, flakes, toe lining, heel lining, underwear, artificial deerskin, synthetic leather, warm shoe lining, cloth sole lining.

Automobile industry: waste spinning thermal insulation felt, shockproof felt, canopy, cushion lining, carpet, door lining, automobile filter element, molded seat cushion.

Household clothing: sofa inner cloth, carpet, wall cloth, mirror cloth, tea bags, vacuum cleaner filter bags, shopping bags, printed sheets, entertainment covers, cushions, sleeping bags, dry cleaning cloths, scouring pads, curtains, tablecloths, lampshade.

Civil engineering, construction: reinforcement, reinforcement, filtration, linoleum base fabric, drainage board, roof waterproofing material, railway, highway, berm, water slope, port sound insulation, sewers, heat protection, separation, drainage.

Other uses: launch vehicle, missile head heat-proof cone, tail nozzle throat lining, high-grade money printing paper, space shuttle heat-resistant tile, map cloth, calendar cloth, artificial cloth, oil painting cloth.

What are the characteristics of non-woven fabrics

--1. Lightweight

Using polypropylene resin as the main raw material for production, the specific gravity is only 0.9, only three-fifths of cotton, with fluffy and good hand feeling.

--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

The polypropylene chips do not absorb water, the moisture content is zero, and the finished product has good water repellency. It is composed of 100% fiber, which is porous and has good air permeability. It is easy to keep the cloth surface dry,

Easy to wash.

--4. Non-toxic and non-irritating

The product is produced with FDA food-grade raw materials, without other chemical ingredients, stable performance, non-toxic, no peculiar smell, and does not irritate the skin.

--5. Antibacterial and anti-chemical agents

Polypropylene is a chemically passive substance, not moth-eaten, and can isolate the erosion of bacteria and insects in the liquid; antibacterial, alkali corrosion, and finished products are not affected by erosion

which affects the strength.

There are many large-scale projects in various constructions in China, such as the Three Gorges Project, Xiaolangdi Project, environmental protection project, western development, infrastructure construction, etc., which will greatly promote the development of geotextiles, filter materials, waterproof materials, and packaging materials. Consumption. In addition, the increase in the income of domestic consumers will also strongly stimulate the consumption of various hygienic absorbent products, air filter materials, medical and health products, and labor insurance and sports products. Therefore, China's non-woven industry still has great growth potential in the future.