Micro Fibres

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<p>A SEMINAR ON MICROFIBRES BY NAME: MR. SANDEEP T.PATIL. CLASS: M.TEXT.-II (T.T.) ROLL NO. : 07MTEXT05</p> <p>HISTORY OF MICROFIBRES?</p> <p>INVENTED IN JAPAN IN 1970 BY OKAMOTO &amp; HIKOTA. FURTHER COMMERCIAL DEVELOPMENT IN U.S. &amp; SWEDEN. SYNTHETICS (POLYESTER / NYLON) ALONE OR MIXED WITH NATURAL FIBRES (COTTON, WOOL, SILK). MUCH THINNER THAN HUMAN HAIR &amp; NATURAL FIBRES. POSITIVELY-CHARGED TO BETTER PICK UP DUST.</p> <p>MICROFIBRES</p> <p>MICROFIBERS ARE FINER THAN NATURAL ONES</p> <p>MICROFIBERS CAN BE WEAVED TOGETHER</p> <p>DEFINITION OF MICROFIBRE: Microfiber refers to synthetic fibers that measure less than one denier. The most common types of microfibers are made from polyesters, polyamides (nylon), and or a conjugation of polyester and polyamide. Natural microfibers are silk and wool distinguished by their inherent soft handle and fabric drape. Limitation of natural microfibre is lack of fibre strength and washability.</p> <p> The Polyester council in the U.S. describes a Polyester microfibre as being four times finer than wool, three times finer than cotton and twice as fine as silk. The higher the number , thicker the fibre. Coarse fibres Medium fibres Fine fibres Micro fibres Super micro fibres &gt; 6.0 dpf 2.4 - 6.0 dpf 1.0 - 2.4 dpf 0.3 - 1.0 dpf &lt; 0.3 dpf</p> <p>Manufacturers Of MicrofibresName of company Toray (Japan) Hoechst(Germany) ICI (U.K.) Dupont (U.S.A) Dupont (U.S.A) Fibre Name of fibre D.P.F Type PET PET PA PA PET Ecsaine Trevira Fineness Tactel Micro Microfine Matique 0.3 0.55 1.0 0.7 0.5</p> <p>PROPERTIES OF FABRIC MADE OUT OF MICROFIBRE Greater bulk. High cover. Low bending stiffness. Excellent softness and drape. High dimensional stability. Silky handle and good comfort. Good water vapour permeability. Better durability and easy care properties. Have excellent thermal insulation property. Good wind resistance and water repellency.</p> <p>LIMITATIONS OF MICROFIBRES Manufacturing is expensive. Low depth of shade. Lower dye levelness. Lower dye fastness to light, dry cleaning. Low torsional and flexural rigidity.</p> <p>MANUFACTURING: Basic Requirement For Production: High quality polymer of homogeneous melt. Optimum heat flow to the spinneret. No impurities Efficient polymer filtration. Tension control - Constant take-up tension. Uniform quench air velocity with less turbulence.</p> <p>Three Principle Techniques(1) Conjugate Technology: Involves Spinning Of Bicomponent filaments comprising of nylon-6 matrix with polyesters fibrillers. Later exposed to solvent or mechanical or thermal treatment to separate one of the component, resulting in microfibres.(2)</p> <p>Sea-Island Technology : Developed by Toray industries of Japan, involves spinning of bicomponent filament comprises either individual Island of one component within a Sea of other component. So sheath component is dissolved later on producing microfibres.</p> <p>(3) Conventional Technology : Single component filaments are extruded through spinnerets, using conventional melt spinning technology. Sheath-core Type:</p> <p>Modification Needed In Weaving: In Preparatory: Reduced size bath Concentration. Fast Cooling. In Weaving: Low Surface hardness of drop wires, healds. Reed wires with rounded edges. Temple similar to used for silk fabric weaving, rubber &amp; plastic rings . Weft accumulator with circular leaf and brush tensioner.</p> <p>APPLICATIONSFunctional Uses: Clothing: For athletic wear such as cyclic jerseys. In military And federal agency in U.S. For active sports wear, rainwear owing to high breathability, moisture transport and water proofness. Insulation: In sleeping bags and outdoor application. Basketballs: Absorb sweat from players hand slippery. less</p> <p> Clothing for dresses, tailored suits,hosiery, evening wear,sheeting, upholstery etc.</p> <p> Cleaning:</p> <p>For consumer cleaning and commercial product cleaning. Exceptional ability to absorb oil and dust. Dust attraction electrostatic property.</p> <p>Principle Of Action: Cross Section of microfibre and cotton thread:</p> <p>Tools Cleaning:Photographic lens and other precision tools includes car mirror, computers, electro-optic devices, panels of video/ audio devices, optical discs, jewels etc.</p> <p> Other textile uses: Table cloths, car interiors, swimming pool towels for quick drying.</p> <p>Benefits from the use of Microfiber cleaning products Microfiber is hypoallergenic, thus will not create problems for asthmatics or allergy sufferers . Microfiber is super absorbent. Absorbing over 7 times its weight in water. Microfibre Towels dry in one third of the time ordinary towels take to dry. Microfiber cleaning cloths will clean virtually any soiling from any surface. They are longer lasting than other cleaning products and contain more fibres per square inch. Microfiber cloths and mops are 99.94% more effective in removing bacteria from smooth surfaces.. The bacterial culture taken after the microfiber mop cleaning showed a 99% reduction .</p> <p>Choose your microfibre cloth</p> <p>Microfiber Super Soft General Purpose Cleaning Cloth CD &amp; LensCleaning Clea Microfiber</p> <p>Microfiber Super Soft General Purpose Cleaning Cloth&amp; Mirror Cleaning Cloth Microfiber Glass</p> <p>Main products for which microfiber are ideally suited: Microfiber Glass Cloth Duster/Multi-purpose Microfiber Cleaning Cloth Microfiber Scrubber Microfiber Kitchen Cloth Microfiber Optical &amp; CD Cloth Microfiber Mops Microfiber Cleaning Sponge Microfiber Cleaning Cloths Terry Cloths, Suede Cloths, Waffle-Weave Cloths</p> <p>Economics of Microfibres Processing: Price is 5 -10 % higher than normal fibre. 0.8 den. PET is 8% costlier than 1 den PET. Yarn price is 4% higher. Conversion cost of fibre to yarn reduces due to increased production per spindle at ring frame and roving frame owing to twist reduction by 5 -10%. Fabric fetch more price due to specialised nature and properties.</p> <p>CONCLUSIONSynthetic fibers, especially the micro denier development has made a big way for sophisticated textiles, apparels and allied applications. Micro denier yarns have wider horizon of application. These fibres have varied simulations of natural fibres, especially silk. Microfibres have shown to be advantageous when drapability, smoothness, water vapour permeabilty are needed. These benefits lead to growing market potential in areas as apparel, sports wear, filter media.</p> <p>REFERENCES Micro polyester fibres for moisture management - Dr. T. Ramchandran, M.B. Sampath and M. Senthilkumar, Indian Textile Journal, March 2009. Scope of microfilament yarns and fabrics in future, A.N. Bhonkar and D.S. Kulkarni, Asian Textile Journal, April 2000. Micro fibres properties,processing and uses, Asian Textile Journal,April 2001. Man Made Textile In India june 1993. Microfibres: giving New Dimensions To The Whole Range Of Textiles. S.K. Malik and Hemlata Nigam. Micro denier yarns K. L. Vidur. New Cloth Market September 1997.</p>