Yarn Manufacturing

1
PRESENTATION ON YARN MANUFACTURING

• Presented By
• SANATHAN TEXTILE

2

• Fiber- A unit of matter characterized by
  flexible , fineness, elasticity, sufficient
  strength and a high length to width ratio.
• Yarn- Yarns are a grouping of fibers twisted
  together to form a continuous strand.

3

• Spinning- Spinning is the process by which
  fibers are converted into yarn.
• Flowchart of Spinning
• Blowroom
• Carding
• Drawing
• Combing
• Drawing
• Roving/Speed/
• Roing Spinning

4

• Blowroom - The section where the supplied
  compressed bale is turned into a uniform lap by
  opening, cleaning, blending or mixing.

5
Function Of Blowroom

• Opening
• Cleaning
• Blending /Mixing
• Lap Forming

6
Flowchart Of Blowroom

• Bale plucker
• ?
• Metal detector
• ?
• Uniclean
• ?
• Unimix
• ?
• Uni flex

Vision shield ? Condenser ? Chute feed ?
Carding
7
Carding

• Carding is the reduction of entangled mass of
  fibers to filmy web by working them between two
  closely spaced relatively moving surfaces closed
  with sharp points.

8
Functions Of Carding Machine

• To remove the small trash particles.
• To give some degree of blending.
• To eliminate the remaining impurities.
• To produce a thick untwisted rope of fibers
  called sliver.
• Reduction of neps.
• Fiber orientation.
• Elimination of short fibers.

9
Drawing

• Drawing is the process in which the slivers are
  blended, doubled, leveled and drafted by passing
  the slivers through a series of pairs of rollers.

10
Function Of Drawframe Machine

• To straighten the crimped and hooked fibers
• To achieve a fairly through parallelization of
  the fibers.
• To improve the short, medium and long term
  unevenness of the slivers by doubling.
• To produce a more uniform sliver
• To reduce the weight/unit length of the card
  sliver.

11
Roving/Speed/Simplex Frame

• Simplex is an intermediate process in which
  fibers are converted into low twist lea called
  roving

12
Functions Roving/Speed/Simplex Frame

• To prepare the package for the R/F.
• To draft the sliver to reduce weight per unit
  length.
• Insert small amount of twist to give required
  strength of roving.
• Wind the twisted roving on to the bobbin.
• Build the roving in bobbin such a form which will
  facilitate handling, withdrawing transfer to
  the next process.

13
Ring Frame

• Spinning process is done by the Ring frame
  machine. Ring frame converts the bobbin into yarn.

14
Functions of ring frame

• Draft the roving until the required fineness is
  achieved.
• Twist the drafted strand to form yarn of required
  count and strength.
• Winding the twisted yarn on to the bobbin for
  suitable storage, transportation and further
  processing.

15