Nanofiber manufacturing. Filament yarns obtained with this technique have been produced mainly in Asia for more than 20 years. These fibers, with island counts in excess of 1000, are still commonly produced both commercially and in pilot plants. common “island” polymers; Polyamide, polyester, common marine polymers PVA, EVOH and polyester are easily hydrolysable. More recently, Hills has applied this technique to the spunbond process. Polyamide and PP fibers “Islands” were produced in a 0.5 m wide spunbonded web at the laboratories of Hills State University and North Carolina.
EVOH and Eastman** polymers were used as “navy”. The fabric made using the “island” consists of fibers with a very small variation in size of about 2 microns. When the fibers are examined after dissolution, they are found to have the same green strength properties as fibers made from a standard melt.
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A similar process can be used to obtain chopped sugar fibers in the spunbond process. The spunbonded web is then fed into a hydrojet web production machine where the fibers are separated and strengthened.
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In this process, the resulting fibers do not fall within the nanofiber diameter range, however, when a similar technique is used in the melt spinning process, the resulting web consists essentially of nanofibers. Although relatively new, nanotechnology is beginning to play a role in improving the performance of textile products. Spinnix Industries was founded out of this realization. Spinnix, named “Coolest” by Time Magazine in 2003. This product is favored by well-known companies such as Levis, Eddie Bauer, GAP and Old Navy as it offers durability, water and oil resistance, stain resistance and therefore less washability without compromising the feel of the fabric.
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Nano-Tex formulation technology and chemical application that can be easily used in textile factories. It modifies the texture at the molecular level by incorporating short, fine and soft fibers into the structure. The nano beard in the chemical composition keeps the dirt out and prevents dirt from getting into the clothes.
manufacturing large scale carbon nanofiber polymer composites
Nano-tex expanded its product line and began producing bedding products such as stain-resistant sleeping bags, shoe covers and bedding sets.
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Another company active in the same field is the Turkish company Spingenix LLC. Scholler Textiles technology has created a special three-dimensional structure that limits the contact area with the ground.
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This company is also the manufacturer of the “NanoSphere” finishing process. NanoSphere imparts waterproof, stain-resistant and non-stick (non-slip, non-stick) properties to fabrics.
scalable manufacturing and applications of nanofibers
The use of nanotechnology has made the textile industry multifunctional. For example, plasma technology modifies the top layers of nanofibers, giving them antibacterial, antifungal and waterproof properties.
Its nanoparticles give a pleasant smell and prevent the proliferation of fungi and various microbes, providing freshness in clothes. Ciba Specialty Chemicals, based on nano-container microcapsules, modifies nanofibers and thus inhibits the growth of bacteria with the formation of antimicrobial substances. The same technology is used in odor absorption. The American Spinning Company has created polyester fibers and yarns that can hold 30 times more moisture than ordinary polyester fibers. Suitable for underwear, this yarn has twenty plies that contain oil and moisture. The total thickness of these layers is 50 nm. In addition, very fine nylon fibers and threads with the ability to absorb a lot of moisture have been manufactured by Spinnix Industries.
The production of nanofibers and the development of this technology has enabled the creation of lighter but stronger polymer fiber composites. The Swiss Federal Institute of Technology has already started spinning nanofibers, and the University of Texas and Trinity College in Ireland have experimented with spinning carbon-nanotube composite fibers that are 17 times stronger than Kevlar.