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Unformatted text preview: 11-16-09CHAPTER 19-NONWOVEN FABRICS-Fiber webs-Textile structures produced by bonding or interlocking of fibers, or both, accomplished by mechanical, chemical, thermal, or solvent means & combinations thereof ASTM 1998-ClassificationsoDurable productsMulti use, not made to be thrown away after useBlankets, interfacings, carpet backingsoDisposable productsMade to be disposed after single/ltd useWipes, disposable diapers, surgical gowns & caps-The Global IndustryoFast growing segment of textile industryoWood pulp to polymer pellets (resins)oRoll goods-Manufactureo2 steps in manufacturingPrep of fiber webBonding of fibers in web-Fiber Web FormationoStaple fiber websDry formingDry laying or cardingoThin fiber film from cardoLaid down on conveyorMachine directionAir layingoOpensuspended in aircollected on screenWet formingFiber in watercollected on screen...
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- Fall '08