AirAir vortex Spinningvortex SpinningAirAir--vortex Spinningvortex Spinning

Zeeshan KhatriZeeshan KhatriBE Textile: PE: CText ATI (UK): CCol ASDC (UK)BE Textile: PE: CText ATI (UK): CCol ASDC (UK) Zeeeshan ©

2006

IntroductionIntroductionIntroductionIntroduction

Goetzfried and Lord Goetzfried and Lord investigated investigated Goetzfried and Lord Goetzfried and Lord investigated investigated extensively and has been testingextensively and has been testing

Polish Company Wifama Polish Company Wifama -- Polmatex Polmatex presented the machine in industrypresented the machine in industrypresented the machine in industry.presented the machine in industry.

Se e al machine of this t pe a e Se e al machine of this t pe a e Several machine of this type are Several machine of this type are being used in Polandbeing used in Poland

Operating PrincipleOperating PrincipleOperating PrincipleOperating PrincipleYarn is formed by an airYarn is formed by an air--yyvortex in a tubevortex in a tube

Air is sucked into the tube Air is sucked into the tube Air is sucked into the tube Air is sucked into the tube through tangential slotsthrough tangential slots

The air moves upward along The air moves upward along the tube wall in spiral and the tube wall in spiral and finally arrives at the upper finally arrives at the upper y ppy pptube seal (3)tube seal (3)

Air returns down into the Air returns down into the Air returns down into the Air returns down into the central of tube as the tube central of tube as the tube exist is sealedexist is sealed

Operating PrincipleOperating PrincipleOperating PrincipleOperating PrincipleOpened fibre material is allowed to Opened fibre material is allowed to enter the system through an enter the system through an enter the system through an enter the system through an openingopeningTo form a yarn, an open yarn end is To form a yarn, an open yarn end is introduces into the tube through a introduces into the tube through a Air-vortex introduces into the tube through a introduces into the tube through a passage at upper seal (3)passage at upper seal (3)The vortex grasp this yarn end and The vortex grasp this yarn end and whirls it round in circles in same way whirls it round in circles in same way whirls it round in circles in same way whirls it round in circles in same way as the fibresas the fibres

Since the upper yarn end is nipped Since the upper yarn end is nipped Since the upper yarn end is nipped Since the upper yarn end is nipped in withdrawal rollers and the lower in withdrawal rollers and the lower yarn end is in rotation, each yarn end is in rotation, each revolution of the yarn in the vortex revolution of the yarn in the vortex revolution of the yarn in the vortex revolution of the yarn in the vortex inserts one turn of twist into the inserts one turn of twist into the yarnyarn

Problems:Problems:1.1. One associated problem is the correct One associated problem is the correct

ordered bindingordered binding--in of the fibres, i.e., in of the fibres, i.e., achieving adequate strength in the yarn achieving adequate strength in the yarn achieving adequate strength in the yarn. achieving adequate strength in the yarn. For this reason, synthetic fibres of For this reason, synthetic fibres of highest attainable uniformity are mainly highest attainable uniformity are mainly g y yg y yused.used.

2.2. Variability in twist level in spun yarn, Variability in twist level in spun yarn, twist can vary within a very wide rangetwist can vary within a very wide range

Advantage:Advantage:Absence of any kind of rapidly rotating Absence of any kind of rapidly rotating Absence of any kind of rapidly rotating Absence of any kind of rapidly rotating machine partsmachine parts

SpecificationSpecificationSpecificationSpecificationSpinning positions/ machineSpinning positions/ machine :: 192192

Delivery speedDelivery speed :: 100100--150 m/ min150 m/ min

Raw materialRaw material :: Synthetic fibre 40Synthetic fibre 40--50 mm50 mm

Count rangeCount range :: Ne 7.5Ne 7.5--3030

Form of feed stockForm of feed stock :: Draw frame sliverDraw frame sliver

Type of yarnType of yarn :: Conventional single yarnConventional single yarn

Yarn characteristicsYarn characteristics :: Low strength, twist Low strength, twist g ,g ,variability, rough surface variability, rough surface

AdvantagesAdvantages :: No rapidly rotating parts, No rapidly rotating parts, simple machinesimple machine

Special featuresSpecial features :: Cotton cannot be spunCotton cannot be spunpp pp

Field of end useField of end use :: Undemanding woven goodsUndemanding woven goods

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