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Department
Textile And Apparel Management
Course
T_A_M 2200
Professor
Mc Bee
Semester
Spring

Description
2200EXAM404022014YarnProcessingIntroductionMostapparelandinteriorfabricareproducedfromyarnsAyarnisacontinuousstrandoftextilefibersfilamentsormaterialsinaformsuitableforknittingweavingorotherwiseintertwiningtoformatextilefabricASTMYarntypeandqualityaffectproductcostqualityandperformanceMucheffortismadetochangethewayyarnsaremadeimprovingproductivitydecreasingcostsincreasinguniformityandqualitysolvingproblemsanddevelopingnewsystemsofapproachestodealwithchangesinothersegmentsofthetextilecomplexFilamentYarnsMadefrommanufacturedfibersexceptforasmall5thatisfilamentsilkManufacturedfilamentyarnsaremadebyextrudingapolymersolutionthroughspinneretandsolidifyingitinfiberformThenindividualfilamentsarebroughttogetherwithorwithouttwistThegroupingofthefilamentswiththeadditionoftwistcreatethefilamentyarnThrowingisthetwistingofmanufacturedfibersandthenintotexturingSmoothFilamentYarnAreuniformastheycomefromthespinneretSmoothnaturegivesthemlusterbutlustervarieswiththeamountofdelusterantinthefiberandamountoftwistintheyarnMaximumlusterisobtainedwithbrightfilamentswithlittleornotwistVeryhightwistyarnslikecrepeyarnsreducefilamentlusterFilamentyarnshavenoprotrudingendssoheydontlintthefibersareveryparalleltheyresistpillingandfabricsmadefromthemshedsoilCompactwithlittlebulkloftorcoverandusedinwindandwaterresistantfabricsYarnstrengthdependsonthestrengthoftheindividualfibersandtheoffilamentsintheyarnStrengthoffilamentyarnsisusuallygreaterthanstapleMonofilamentYarnFishinglineSinglecoarsefilamentfiberPrimarilyusedforindustrialpurposessewingthreadfishinglineandvegetablebagsMetallicfibersusedmonofilamentfortheirsparkleBulkYarnsMadetohavegreatercoveringpowerorvolumethanthatofaconventionalyarnReferredtoasbulkcontinuousfilamentyarnsBCFBulkingtheyarngivesfilamentstheaestheticpropertiesofspunyarnsbyalteringthesurfaceandcreatingspacebetweenthefibersIrregularsurfacesofttwistandcontinuousnonparallelfibersthatresistbeingpulledapartMoreabsorbentmorebreathablebetterbulkcoverandelasticityStaticbuildupislowerandbulkyarnsdonotpillorshedThreeclassificationsofbulkyarnsBulkyyarnsStretchyarnsTexturedyarnsSpunYarnsArecontinuousstrandsofstaplefibersheldtogetherbytwistingorinsomecaseswithouttwistHavefuzzysurfacemoretwistthanfilamentyarnsshortfibersthatpullapartandpartiallyparallelfibersAfabricmadewithspunyarnsismorecomfortablenexttotheskinthanonemadefromsmoothfilamentyarnsMostinsulatingpropertiesareduetothestructureoftheyarninthefabric
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