[Fun facts about polymers and materials] --016 Fun facts about the “non-woven fabric” materials around us +ljtjbx
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This post was last edited by ljtjbx on 2015-11-10 09:54. Non-woven fabric, also known as Non Woven Fabric or Nonwoven cloth, is made up of oriented or random fibers. It represents a new generation of eco-friendly materials, featuring properties such as moisture resistance, breathability, flexibility, light weight, non-flammability, easy degradation, being non-toxic and non-irritating, a wide range of colors, low cost, and recyclability. It is typically produced using polypropylene (PP) pellets as raw material, through a continuous one-step process of high-temperature melting, spinning, laying, and heat-press rolling. It is called cloth because of its fabric-like appearance and certain properties. Features: Non-woven fabric has no warp or weft threads, making it very easy to cut and sew. It is also lightweight and easy to shape, which makes it very popular among craft enthusiasts. It is a type of fabric that does not require spinning or weaving; instead, textile short fibers or filaments are arranged in a directional or random manner to form a web structure, which is then reinforced using mechanical, thermal bonding, or chemical methods. It is not formed by interweaving or knitting individual threads together; instead, the fibers are bonded together physically. Therefore, when you examine the fabric of your clothes, you will find that it is impossible to pull out individual thread ends. Non-woven fabrics transcend traditional textile principles and feature a short production process, fast manufacturing speed, high output, low costs, wide range of applications, and multiple sources of raw materials. Advantages: 1. Light weight: Made primarily from polypropylene resin, it has a specific gravity of only 0.9, which is three-fifths that of cotton; it is fluffy and has a pleasant feel to the touch. 2. Softness: Composed of fine fibers (2-3D), formed by light spot heat melting bonding. The finished product has moderate softness and is comfortable to wear. 3. Water repellency and breathability: Polypropylene chips do not absorb water, with a water content of zero; as a result, the finished product has excellent water repellency. Being composed of 100% fibers, it is porous and offers good breathability, allowing the fabric to remain dry easily and facilitating cleaning. 4. Non-toxic and non-irritating: The product is manufactured using FDA-approved food-grade ingredients; it contains no other chemical substances, has stable properties, is non-toxic and odorless, and does not irritate the skin. 5. Antibacterial and chemical-resistant: Polypropylene is chemically inert, resistant to insect damage, and can prevent the destruction caused by bacteria and insects present in liquids ； Antibacterial, resistant to alkali corrosion; the finished product’s strength is not affected by erosion. 6. Antibacterial property. The product is water-repellent, does not mold, and can protect against the damage caused by bacteria and insects in liquids, thus preventing mold and decay. 7. Good physical properties. It is formed by directly spinning polypropylene into a web and then thermally bonding it; the strength of the resulting product is better than that of ordinary short-fiber products, and there is no directionality in its strength, with similar strength in both the longitudinal and transverse directions. 8. In terms of environmental protection, the raw material for most non-woven fabrics is polypropylene, while the raw material for plastic bags is polyethylene. Although these two substances have similar names, their chemical structures are quite different. The chemical molecular structure of polyethylene possesses considerable stability and is extremely difficult to degrade; as a result, plastic bags take 300 years to completely decompose ； Polypropylene, on the other hand, has a weak chemical structure; its molecular chains can break easily, allowing it to degrade effectively and enter the next stage of the environmental cycle in a non-toxic form. A non-woven shopping bag can be completely decomposed within 90 days. Moreover, non-woven shopping bags can be reused more than 10 times, and their environmental impact after disposal is only 10% that of plastic bags.
This post was last edited by ljtjbx on 2015-11-10 at 10:41. Non-woven products feature rich and vibrant colors, are stylish and environmentally friendly, have a wide range of uses, and possess an attractive appearance. They come in various patterns and designs, are lightweight, eco-friendly, and recyclable, and are recognized internationally as environmental products that help protect the Earth’s ecosystem. It is suitable for industries such as agricultural films, shoe manufacturing, leather processing, mattress production, quilts, decoration, the chemical industry, printing, the automotive sector, building materials, and furniture. It can also be used for clothing linings, disposable surgical gowns in medical and health fields, masks, hats, bed sheets, disposable table covers for hotels, beauty products, saunas, as well as modern fashion items such as gift bags, luxury bags, shopping bags, and advertising bags. Eco-friendly products, with a wide range of uses and affordable prices. Non-woven fabric is also known as pearl canvas because of its appearance, which resembles that of pearls. Non-woven fabric is made using chemical fibers and plant fibers, etc., on wet or dry papermaking machines with water or air as the suspension medium; although it is a type of fabric, it is not produced through textile processing, which is why it is called non-woven fabric. Non-woven fabric is a new generation of eco-friendly material, featuring advantages such as high strength, breathability and water resistance, environmental friendliness, flexibility, being non-toxic and odorless, as well as a low cost. It is a new generation of eco-friendly material, featuring water repellency, breathability, flexibility, non-flammability, being non-toxic and non-irritating, as well as a variety of colors. When exposed to the outdoors, this material decomposes naturally; its maximum lifespan is 90 days. Indoors, it decomposes within 8 years. When burned, it produces no toxins or harmful substances, thus causing no environmental pollution. This is how it contributes to environmental protection. (1) Non-woven fabrics for medical and hygiene use: surgical gowns, protective clothing, disinfection wraps, masks, diapers, household cleaning cloths, wiping cloths, wet wipes, magic towels, soft towel rolls, beauty products, sanitary pads, panty liners, and disposable hygiene cloths, etc. (2) Non-woven fabrics for home decoration: wall coverings, tablecloths, bed sheets, bed covers, etc. (3) Non-woven fabrics for clothing: linings, bonded linings, wadding, shaping cotton, various synthetic leather substrates, etc. (4) Industrial non-woven fabrics ； Materials for roof waterproofing membranes and asphalt shingles, including substrates, reinforcing materials, polishing materials, filtering materials, insulating materials, cement packaging bags, geotextiles, covering fabrics, etc. (5) Agricultural non-woven fabrics: crop protection fabrics, seedling raising fabrics, irrigation fabrics, thermal insulation curtains, etc. (6) Other non-woven fabrics: space foam, thermal and sound-insulating materials, oil-absorbing felt, cigarette filters, tea bags for packaging, shoe materials, etc. Eco-friendly non-woven bags for medical and health use: surgical gowns, caps, covers, plaster dressings, women’s sanitary pads, baby diapers, wet wipes, sanitary underwear, dust covers. Agriculture: harvest fabric, greenhouse fabric. Industry: floppy disk linings, speaker fabric, filtering materials, soundproofing foam for speakers, sealing ring linings, cable fabric, fiberglass reinforcement cloth, industrial cleaning rags, shock-absorbing pads, insulating materials, tape backing, pipe backing, ventilation ducts, sandpaper fabric. Packaging: composite cement bags, lining fabric for bags and boxes, packaging base liner, batting, storage bags, movable jacquard fabric for bags and boxes. Apparel and footwear: garment linings, padding, shoe toe caps, heel linings, undergarments, artificial deer skin, synthetic leather, thermal insoles for shoes, cloth insoles. Automobile industry: waste fiber insulation mats, shock-absorbing mats, roofs, seat cushions, carpets, door linings, automotive filters, molded seat cushions. Home apparel: sofa upholstery, carpets, wall coverings, glass cleaning cloths, tea bags, vacuum cleaner filters, shopping bags, printed bed sheets, table covers, cushions, sleeping bags, dry cleaning cloths, scouring pads, curtains, table runners, lamp shades, and Mytofu* with a back coating. Civil engineering, construction: reinforcement, stiffening, filtration, oilcloth base fabric, drainage sheets, roof waterproofing materials, railways, highways, embankments, water slopes, port soundproofing, sewers, heat protection, separation, drainage. Other uses: launch vehicles, heat-shielding cones for missile warheads, throat linings for exhaust nozzles, high-quality banknote paper, heat-resistant tiles for space shuttles, map fabric, calendar paper, synthetic fabrics, canvas for oil paintings, and more.
Main products: non-woven fabric quilting. Non-woven fabric crafts refer to handicrafts made using non-woven fabric (the image on the right is an example of a craft made from non-woven fabric). More and more craft enthusiasts are engaging in non-woven fabric crafts for the following reasons: 1. Non-woven fabric has unique properties; it is thicker and harder than ordinary fabrics, and issues such as thread coming loose in cotton fabrics do not occur, making it convenient for sewing. 2. Items made from non-woven fabric are cute and realistic; they make great gifts to express your feelings. 3. Non-woven fabric is available in a variety of colors, allowing people to design different patterns. Non-woven fabric books, non-woven fabric cakes, non-woven fabric dolls, non-woven fabric bags… all can be created by our hands. 4. Non-woven fabrics can be divided into domestic and imported types. Domestic fabrics are thinner, softer, and tend to pill more easily, while imported fabrics are relatively thicker, flatter, and stiffer, offering a better feel and being more suitable for handcrafting. Disposable items: Medical non-woven products are textiles used in medical and health applications, made from chemical fibers including polyester, polyamide, polytetrafluoroethylene (PTFE), polypropylene, carbon fiber, and glass fiber. This includes a range of disposable medical supplies such as face masks, protective clothing, surgical gowns, isolation gowns, lab coats, nurse hats, surgical caps, doctor’s hats, surgical kits, maternity kits, first-aid kits, diapers, pillowcases, bed sheets, blanket covers, shoe covers, and more. Compared with traditional cotton-woven medical textiles, medical non-woven fabrics have advantages such as high filtration efficiency against bacteria and dust, a lower rate of surgical infections, ease of disinfection and sterilization, and the ability to be easily combined with other materials. As disposable products for single use, medical non-woven products are not only convenient to use and safe and hygienic, but they also effectively prevent bacterial infections and iatrogenic cross-infections. In our country, investment in the healthcare industry has exceeded 100 billion yuan; of this amount, the total output value of sanitary products and materials amounts to around 64 billion yuan, with a trend toward diversification. Flour packaging bags: Made from non-woven fabric, these flour bags are characterized by their light weight, environmental friendliness, moisture resistance, breathability, flexibility, flame retardancy, non-toxicity and non-irritancy, as well as their reusability. They are recognized worldwide as eco-friendly products that help protect the Earth’s ecosystem, and are widely used for packaging various types of grains and flours, such as wheat flour, corn flour, and buckwheat flour. Rice, etc. These types of non-woven products are printed using inkjet printing, resulting in an attractive appearance with realistic colors. They are non-toxic, odorless, and do not emit any volatile substances; thus, they are more environmentally friendly and cleaner than products printed with traditional inks, fully meeting the environmental requirements of modern people. Due to its reliable product quality, affordable price, and long service life. The main specifications include 1 kg, 2.5 kg, 5 kg, 10 kg, etc., for premium packaged bags and packaging pouches for rice and noodles. Fashion shopping bags, non-woven bags (also known as non-woven tote bags), are eco-friendly products that are durable, aesthetically pleasing, and have good breathability. They can be reused and washed, and it is possible to print advertisements or logos on them. With a long service life, they are suitable for use by any company or industry as advertising materials or gifts. Consumers receive a beautiful non-woven bag as part of their purchase, while businesses get invisible advertising benefits; it’s a win-win situation, which is why non-woven materials are becoming increasingly popular in the market. The product is made from non-woven fabric, a new generation of eco-friendly material that features moisture resistance, breathability, flexibility, light weight, non-flammability, easy biodegradability, being non-toxic and non-irritating, a wide range of colors, low cost, and recyclability. This material can decompose naturally when left outdoors for 90 days, and its lifespan indoors is up to 5 years. It is non-toxic, odorless, and produces no residues upon combustion, thus avoiding environmental pollution; it is internationally recognized as an eco-friendly product for protecting the Earth’s ecosystem.
It’s too long; I didn’t finish reading it. It sounds a bit like tree bark. :L
This thing was common in Hubei during the 1990s, and it is associated with a famous case
You can directly check the applications section to see what items we use. Learn about it by considering the situations around you.
Non-woven fabric has a really wide range of applications. I’m not sure what case you’re referring to? Is it related to non-woven fabric?
The series of non-woven fabric fraud cases; this is a very famous case from the early days
Hehe, so this thing has this effect too. The fibers used in non-woven fabric production are mainly polypropylene (PP) and polyester (PET). In addition, there are nylon (PA), viscose fiber, acrylic fiber, polyethylene (HDPE), and polyvinyl chloride (PVC). Based on application requirements, non-woven fabrics are divided into two main categories: those for single-use and those that are durable.
Is that really necessary? Unless it’s a product that causes physical discomfort, as long as it’s available for sale and isn’t harmful, just buy it! Last night I watched the program about preservatives in wet wipes, but I didn’t understand anything at all. In this environment, just make do; every extra day counts.
Be more careful in normal times; just choose what you like, what suits you, and what will work! It’s enough to just be able to distinguish the basics; in this tricky society, one has to take precautions even when it’s hard to do so!