Fibers nonwoven

Narrow molecular weight distribution Difficult extrusion except where NMWD resins are used. Low melt strength, good melt drawability Fiber/nonwovens Fiber/nonwovens... 

Extrusion press processing (express processing) was developed for the production of flax fiber-reinforced PP at the research center of Daimler Benz (Ulm, Germany) [62]. In this processing, natural fiber nonwovens and thermoplastic melt-films are alternatively deposited in a tempered molding tool and molded afterwards. The thermoplastic melt-films are laid on by a mobile extruder. If thi.s process is optimally adapted to the element, a single passage by the extruder suffices. The structural order consists of three layers two layers of... 

Lower-density E-plastomers have found alternate use in cast film processes to make elastic film laminates with good breathability which contain laminates of liquid impermeable extensible polymeric films with extensible-thermoplastic-polymer-fiber nonwovens and nonwoven webs of polyethylene-elastomer fibers as the intermediate layers. The development relates to a breathable film including an E-plastomer and filler that contributes to pore formation after fabrication and distension of the film. The method and extent of distension is designed to produce a breathable film by stretching the film to form micropores by separation of the film of the E-plastomer from the particulate solids. This film is useful for manufacture of absorbent personal-care articles, such as disposable diapers and sanitary napkins and medical garments. In detail, these constructions comprise a liquid impermeable extensible film comprising polyolefins. The outer layer contains extensible-thermoplastic-polymer-fiber nonwovens, and an elastic intermediate layer contains nonwoven webs of fiber E-plastomers. The intermediate layer is bonded to the film layer and the outer... 

Brundtland report, 24 162 Brush aerators, 26 162 Brushing, of staple-fiber nonwoven fabrics, 17 515-516... 

Fabric filtration, 26 706-713 mechanism of, 26 709 Fabrics. See also Spunbonded nonwoven fabrics Staple-fiber nonwoven fabrics chemical resistance and maximum temperatures of, 26 711t... 

Web consolidation, for staple-fiber nonwoven fabrics, 17 505-512 Web drafting, 17 501-502 Web dryers, 9 119-120... 

The major utility of PTFE dispersions is that they allow processing of PTFE resin, which cannot be processed as ordinary polymeric melt, because of its extraordinarily high melt viscosity, or as solution, because it is insoluble. Thus, PTFE dispersions can be used to coat fabrics and yams, impregnate fibers, nonwoven fabrics, and other porous structures to produce antistick and low-friction coatings on metals and other substrates and to produce cast films. 

Heavy but soft materials such as lead reflect sound waves very efficiently. Because of its high density and low modulus, lead is an excellent acoustic insulator. Lead sheets are indeed used for this purpose, but not alone This is because lead tends to creep easily under its own weight. A lead sheet is commonly laminated between say plywood or some other material. Toray Co. produced a lead fiber nonwoven fabric embedded in soft polyvinyl chloride with excellent sound insulating characteristics. Nonwoven lead fiber mat can be used as radiation shielding in nuclear installations. A blended product of fine lead short fiber with a resin has been used for X-ray shielding. 

Shape of products Powder—spherical Film—amorphous Fiber—long fiber, short fiber, nonwoven cloth... 

Anon. Kevlai Fibers http //www.dupont.co.uk/products-and-services/fabrics-fibers-nonwovens/fibers/brands/kevlar/products/dupont-kevlar-fiber.html [last accessed October 2015]. 

Polytri methylene terephthalate Vinylidene chloride/methyl acrylate copolymer fiber, natural food Wheat (Triticum vulgare) bran fiber, natural pharmaceuticals Wheat (Triticum vulgare) bran fiber, natural supplements Wheat (Triticum vulgare) bran fiber, nonwoven fabrics Polyethylene terephthalate... 

PHA copolymers can be converted into various forms and products, such as films, sheets, fibers, nonwovens, molded articles, pulps, powders, coating materials, laminates, and composites, using conventional processing steps such as extrusion and... 

To improve the spinnability of the PPy spinning solution, poly(vinyl cinnamate), PVCN (PPy PVCN = 0.8 0.2 by weight) was added to the PPy spinning solution. The morphologies of the PPy/PVCN blend fiber nonwoven web, and the fiber surface are shown in Figure 8.68. The PPy/PVCN blend solution produced a better quality of nonwoven web than the PPy solution did, because the high molecular weight of PVCN increased the intermolecular interaction of the polymer in the solution. The electrospun... 

PPy/PVCN fiber showed slightly smaller diameter with much better uniformity than PPy fiber, since the fibers were split much more uniformly during electrospinning. The surface of the PPy/PVCN fiber was also extraordinarily smooth and the electrical conductivity of the compressed PPy/PVCN blend fiber nonwoven web was about 0.3 S/cm. 

Strzelecki C. (2004), Modem Solutions for Shredding, Grinding and Repelletizing Post-Industrial Fiber, Nonwovens and Carpet Scrap , Presentation at 9th Annual Conference on Recycling of Polymer, Textile and Carpet Waste, Dalton, GA, May 10-11. 

Nonwovens can be formed by carding on a needle punching machine 12] or aerod)mamically by using a machine for random laid nonwovens. In case of 100% natural fiber nonwovens, coarse fibers, such as hard (leaO fibers, are usuciUy mixed to the finer technical natural fibers in order to improve their wetting out by the matrix. 

The main categories of PP fibers, fibrous and related materials are the following monofilaments, multifilaments, staple fibers, nonwoven textiles (spunbonds, melt blowns), tapes, split films and others [1, 2, 3, 5]. 

Chen S, Hou H, Hamisch E, Patil SA, Carmona-Martinez AA, Agarwal S, Zhang Y, Sinha-Ray S, Yarin AL, Greiner A, Schroder U (2011) Electrospun and solution blown three dimensional carbon fiber nonwovens for application as electrodes in microbial fuel ceils. Energ Environ Sci 4(4) 1417-1421... 

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