Posts
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 OPENING or BREAKING:
- BALE OPENER
- MIXING
- BLOW-ROOM
- CARDING
- DRAWING
- COMBING
- SIMPLEX (ROVING)
- SPINNING (RING FRAME)
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 |
No Responses to "Basic Concept of Yarn Manufacturing (Machine Flowchart)"