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Short Staple Spinning Pdf Download

 
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MessagePosté le: Ven 2 Sep - 06:23 (2016)    Sujet du message: Short Staple Spinning Pdf Download Répondre en citant




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In mule spinning the roving is pulled off a bobbin and fed through rollers, which are feeding at several different speeds.This thins the roving at a consistent rate. Spinning[edit]. Wikimedia Commons has media related to Spinning. In long staple spinning, the process may start with stretch-break of tow, a continuous "rope" of synthetic fibre. Plying is done by pulling yarn from two or more bobbins and twisting it together, in the opposite direction from that in which it was spun. driveThree-phase shunt motor (commutator motor)DC shunt motorCop BuildupCop shapeThe winding processThe winding mechanismForming the baseMotor-powered cop formationAutomationThe need for automationThe potential for automationDoffingPreparation for doffingManual doffingAutomatic doffingTypes of doffing systemComponents of the systemDoffing preparationDoffing the copsCreeling the tubesCompletion of doffingAutomated cop transportAppropriateness of automationInterconnected transportInterconnected machinesPiecing devicesRoving stop motionsMonitoringThe purpose of this equipmentRINGDATA by ZellwegerIndividual Spindle Monitoring (ISM) by RieterMill information systemsRequirementsStructure of mill information systemsExplanation of the Rieter SPIDERweb system by way of exampleAuxiliary EquipmentFiber extractionThe systemVacuum and energy consumptionBlowers (traveling cleaners)The problem of dust and flyTypesAgitatorsBlower/suction systemsTracksCompact SpinningBasic situationSolution to the problemImplementation of the basic solutionAdvantages of condensingTechnological AddendaSpinning geometryTermsThe spinning triangleThe formation of the spinning triangleThe dimensions of the spinning triangle (width and length)Influence on the ends down rateInfluence on the yarn structureConcluding remarks on the spinning triangleSpinning length ESpinning angle Roller overhangOther dimensions in spinning geometryQuality standardsA new approach to qualityGeneralDimensioned qualityOverdimensioned qualityUnderdimensioned qualityQuality that is as good as requiredQuality standards according to Uster StatisticsGeneralMass variationImperfectionsTensile properties (breaking tenacity, at 5 m/min). Spinning is a major part of the textile industry. Spinning is the twisting together of drawn out strands of fibres to form yarn, though it is colloquially used to describe the process of drawing out, inserting the twist, and winding onto bobbins. Technology of Short-staple SpinningGeneral - Technology of Short-staple SpinningRaw Material as a Factor Influencing SpinningCharacteristics of the raw materialFiber finenessThe influence of finenessSpecification of finenessFiber maturityFiber lengthThe influence of lengthThe staple diagramVarious diagram formsRectangular stapleTriangular stapleTrapezoidal stapleStepped stapleFibrogramThe specification of lengthThe proportion of short fibersFiber strengthFiber elongationThe slenderness ratio (stiffness)Fiber cleannessImpuritiesNepsDustDefinitionProblems created by dustChemical deposits (sticky substances)Relative importance of the fiber influencesOpeningThe need for openingType and degree of openingThe intensity of openingGeneral considerations regarding opening and cleaningCardingThe purpose of cardingClothing arrangementsCarding dispositionDoffing dispositionForces acting on the fibersCarding dispositionDoffing dispositionCentrifugal forcesFiber transfer factorThe most important working regions in cardingPre-opening between feed roller and licker-inCarding between main cylinder and flatsTransfer zone at the dofferStraightening-out of fiber hooksThe straightening-out operationRequired number of machine passagesCleaningImpurities to be eliminatedPossibilities for cleaningGrid and mote knivesInfluencing factorsDegree of cleaning and resistance to cleaningDust removalBlendingThe purpose of blendingEvaluation of the blendDe-blendingBlending proceduresStages in the blending operationMeteringReducing the Unevenness of Yarn MassUnevenness of yarn massThe unevenness limitDeterioration in evenness during processingUnevenness over different lengthsBasic possibilities for equalizingDoublingThe averaging effectTransverse doublingBack-doublingLevelingMeasuring, open- and closed-loop controlOpen-loop controlClosed-loop controlAdjustment of the draftDrafting with simultaneous twistingAttenuation (draft)The draft of the drafting arrangementDraft and attenuationThe drafting operationThe drafting operation in the drafting arrangementDrafting forceStick-slip motionBehavior of fibers in the drafting zoneFiber guidanceFloating fibersFriction fieldsThe fiber friction fieldInfluencing factorsDistribution of draftOther drafting possibilitiesMule spinningDraft at the opening rollerAdditional effects of draftYarn FormationAssembly of fibers to make up a yarnArrangement of the fibersNumber of fibers in the yarn cross-sectionFiber dispositionThe order of fibers within the yarnThe positions of the fibers in the yarn structureRing-spun yarnsOpen-end spun yarnsWrap yarnsAirjet YarnsYarn structureFiber migrationImparting strengthPossibilities for imparting strengthTrue twist (with reference to ring-spun yarn)The direction of twistTwist and strengthDeformation of the yarn in length and widthTwist formulasDerivation of the twist equationFalse twistOperating principleImparting strength by false twistFalse twist at other places in the spinning processSelf-twistHandling MaterialCarriers for materialMaterial carriers and transportPackage formsClassificationThe most widely used package forms with internal formersLaying down in cansLaying down of sliverLarge and small coilsTwisting of the sliverWinding by rolling and lap formingWinding on flyer bobbinsBuild-up of the packageSpeed relationshipsThe winding principleWinding of copsBuild of copsForm of copsThe formation of the baseThe formation of the conical layersThe winding processThe winding principleVariation in the speed of the travelerVariation in yarn twistForce and tension relationships during winding by using travelersPreliminary remarksConditions at the traveler in the plane of the ringChanges in the force conditionsConditions at the traveler in the plane through the spindle axisChanges in the conditionsConditions at the traveler in the tangential planeBalloon tensionEffects on the travelerQuality AssuranceThe necessityThe structure of the Mill Information System (MIS)The Rieter SPIDERweb Mill Information System (Mill Monitoring System)CommentReferences.

Bibliography[edit]. .. Sub-navigation You are hereHome404PrintContentThe page you requested cannot be found.The link you followed is either outdated or doesn't exist. With the exception of silk, each of these fibres is short, being only centimetres in length, and each has a rough surface that enables it to bond with similar staples.[3]. History and economics[edit]. The pre-industrial techniques of hand spinning with spindle or spinning wheel continue to be practiced as a handicraft or hobby, and enable wool or unusual vegetable and animal staples to be creatively used. Ring-spinning is the most common spinning method in the world.[citation needed] Other systems include air-jet and open-end spinning. The Ring Spinning MachineIntroductionFunction and Mode of OperationTaskOperating principleStructural Configuration of the MachineBasic frame and superstructureThe bobbin creelThe drafting systemInfluence on quality and economyConceptual structure of the drafting systemThe top rollersTypesCoversPressure roller loadingLoading optionsSpring-loaded pressure arm (Texparts PK 225, for example)Pressure arm with pneumatic loading (Rieter FS 160 P 3.1, for example)Fiber guidance devicesOptions on the ring spinning machineDouble apron drafting system with long bottom apronDouble apron drafting system with short bottom apronThe spindleThe threadlineSpindle structureThe spindle bearingInfluence of the spindle on the spinning processThe spindle driveTypes4-spindle tape driveTangential belt driveThe thread guide devicesThe thread guideThe balloon checking ring (BER) (antiballooning device)The separatorsThe ringThe importance of ring and travelerThe ring shapeBasic shapesT-flange ringsThe anti-wedge ringThe cropped ring (standard ring)Inclined-flange ringsThe ring materialAttachment of the ringsThe demands imposed on the ring when operating on the machineFiber lubrication on the ringRunning-in new ringsFollower ringsThe ring travelerTask and functionTypesTraveler shapeThe traveler materialTraveler massThe traveler clearerThe Machine DriveThe drive problemMotors usedThree-phase squirrel-cage induction motorsThe motorPole-changing three-phase motorsSquirrel-cage induction motors with variable speed gears on the load sideThe A.S.S. This is a technique where the staple fibre is blown by air into a rotor and attaches to the tail of formed yarn that is continually being drawn out of the chamber. v t e Spinning Materials Noil Rolag Roving Sliver Staple Top Tow Woolen Worsted Techniques Carding Combing Heckling Long draw Scutching Short draw Twist per inch Hand spinning tools Hand spinning Distaff Niddy noddy Nostepinne Spindle Spinning wheel Spinners weasel Industrial spinning Cotton-spinning machinery Ring spinning Open end spinning Dref Friction Spinning Magnetic ring spinning Mule spinners' cancer Piece-rate list Spinning frame Spinning jenny Spinning mule Throstle frame Water frame Wool combing machine .

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