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NYLON

NYLON. Tutor: Josanne Ghirxi B.Pharm (Hons), P.G.C.E. School: St Benedict College, Margaret Mortimer GJL, Malta. A Project by Deborah Francalanza. Nylon - Definition. A generic classification for a family of synthetic polymers known as polyamides.

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NYLON

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  1. NYLON Tutor: Josanne Ghirxi B.Pharm (Hons), P.G.C.E. School: St Benedict College, Margaret Mortimer GJL, Malta A Project by Deborah Francalanza

  2. Nylon - Definition • A generic classification for a family of synthetic polymers known as polyamides • First produced on the 28th February 1935 by Wallace Hume Carothers, an American chemist, at DuPont

  3. DuPont Corporation • An American chemical corporation • Currently the world's second largest chemical company in terms of market capitalization • Wallace Hume Carothers appointed as head of DuPont Organic Chemistry Department in 1927 • Carothers was born on the 27th April 1896 in Iowa and died in 1937

  4. Early history of nylon production • To replace Asian silk with a similar, durable but less costly product • Carothers produced half-an-ounce of a polymer (labelled as polyamide 6-6) at DuPont Corporation on 28th February 1935. The polymer was eventually developed into a commercial product - Nylon • Early use of nylon was in parachutes, tyres, tents, ropes, ponchos and other military supplies

  5. Characteristics of nylon • Varies in luster • Durable and elastic • Easy to wash and can dye • High resistance to insects, fungi and chemicals • Abrasion resistant • Melts instead of burning

  6. Modern use of Nylon • Clothing - footwear, velcro, carpet fibre • Auto parts - petrol tanks, gears, bearings • Abseiling gear - slings and ropes • Sports items – racquet strings, basketball netting, fishing lines • Strings - music instruments • Medical equipment - filtering media in sterilising, sutures

  7. Visit to Nylon Knitting Malta Limited • Production of synthetic fibres and finished fabric used in diapers from raw material • Raw material (PA6) arrives in big bags and unloaded into silos

  8. Extrusion and Spinning • PA6 is fed to the extruder • Heated into a molten state and pressure fed from the extruder via heated jacket tubes to spinning pumps • Polymer is forced through a complex filtration system and finally through spinerettes • Yarn is automatically wound on spools to a pre-determined weight

  9. Draw Warping and Warp Knitting • Draw warping machine runs new load of yarn whereby beams with defined number of threads and meterage are produced • Beams are loaded on knitting machines that produce fabric rolls of a chosen type, width, and length • Finished rolls are transferred to packing machines, labelled, and checked prior exportation

  10. NYLON THANK YOU

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