Flow Chart of Yarn Finishing Process

Yarn finishing:

Yarn finishing is a very important task for spinners. Because buyers are not interested to buy unfinished/faulty yarn. After getting yarn from the ring frame has many faults like slubs, neps, knots, hairy, etc. For reducing yarn fault auto cone winding machine is used. Which gives right weight and shape of yarn in a cone package. All tasks are done in the spinning finishing section. So spinning finishing section has an important role in the yarn manufacturing process. Now I’m giving a flowchart of the spinning yarn finishing process.

Yarn finishing process (Heat setting)

Flow Chart of Spinning Finishing Section

The yarn gets with cop package from the frame

Winding by auto coner

Checking under ultraviolet light

Yarn conditioning by heat setting

Weight determination


Delivery to buyer

The process sequence of Finishing

To improve the resistance of the yarn to untwisting and snarling, it is necessary to fix to twist i.e. to bring the yarn into a stabilized state. Yarn finishing starts after Ring Till transfer to finished godown.

Selling of yarn: Yarn is sold in:

  1. hank form
  2. Cone form.

Bad/methods mostly used

  1. Yarn steaming in an autoclave (with boiler) capacity up to 500 kg/batch. Allowable pressure 7kg/cm(max)
  2. High-frequency current by the electrode with high voltage
  3. Water treatment conditioning

Cone Winding

  • No. drum /m/c —120
  • Drum Dia— 80-95 mm
  • Traverse — 150mm -152mm
  • Type of package shape —9 degrees 15
  • Winding speed —500-850m /tm
  • Ribbon breaking device: Electrical on-off type
  • Empty bobbin conveyor at each side with an endless belt
  • Provision for a rack on the top goes m/c for storing ring cops.
  • Stop motion — Auto stop for end breakage with individual spindle control
  • Main motor — each side of the individual motor
  • The speed of winding drum — up to —3500 rpm
  • Overhead blower — for cleaning fly
  • Suction arrangement for slub catcher
  • Splicing device
  • Type of package- Paper or plastic
Author of this Article:
Mustaque Ahammed Mamun 
Quality Assurance Officer,
Lamisa Spinning Ltd. Tongi, Gazipur 
Cell: +8801723300703
Email: [email protected]

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