Basic Concept of Yarn Manufacturing (Machine Flowchart)

Basic Concept of Yarn Manufacturing

Alam Kamrul
B.Sc. in Textile Engineering
Noakhali Textile Engineering College
Cell: +8801714533407



Yarn:
  • Yarn is defined as a linear assemblage of the fibers twisted together.
  • The process of making the yarn from a textile fiber is called Spinning
Yarn
YARN MANUFACTURING PROCESS
  • BALE OPENER
  • MIXING
  • BLOW-ROOM
  • CARDING
  • DRAWING
  • COMBING
  • SIMPLEX (ROVING)
  • SPINNING (RING FRAME)
BALE OPENING

BALE OPENING or BREAKING:
  • The cotton tufts are opened in this process.
  • As the cotton arrives in an extremely compressed condition the first operation is to loosen the matted fibers
  • The cotton fiber is loosen by means of rotating spiked rollers of the bale opener. 
Bale opener
Mixing
  • This is a process of mixing the same/different category of fibers to get desired properties and cost effectiveness.
  • Mixing is done after the study of the essential properties of fiber like staple length,Tensile strength, fineness, uniformity etc. 
Mixing
BLOW ROOM
  • In this process the cleaning and opening of the cotton is done by beaters and openers.
  • The foreign materials like dust particles, seeds of cotton and other impurities are partially removed in this process.
  • The cotton tufts are opened and cleaned in this process and the cotton lap is made out. 
Blowroom
CARDING
  • Carding is the heart of spinning in this process the minute impurities like small seed particles,immature fibers etc. are removed.
  • The straightening and aligning of fibers are done in this process.
  • In carding the Blow room lap is attenuated to the card sliver. 
Carding
Draw Frame
  • Through drafting fibbers get paralleled
  • Up to Eight Carded Slivers are fed into the Draw-Frame and they are stretched/Straightened and made into a single sliver.
  • Also fiber blending can be done at this stage.
Draw-Frame
Simplex (Roving Frame)
  • Further drafting is done here to get the fibers more aligned/paralleled.
  • The Sliver from Draw-Frame is thicker and will be difficult to be fed into the Ring-frame as is, hence here the Slivers are stretched and were made thinner by Drafting and mild twisting (so as to strengthen the Roving).
  • The End-Product from the Simplex is called as Roving. 
Simplex
Ring Frame (Spinning)
  • The roving is fed into the Ring-frame and is made into yarn by further Drafting & Twisting.
  • To draft the roving until the required fineness is achieved
  • To impart strength to the fiber, by inserting twist.
  • Depending upon the yarn count required , the drafting and twisting can be adjusted. 
Ring Frame

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