Presentation on “SPINNING” (yarn manufacturing)

Textile Fiber Selection Yarn (Spinning) Weaving or knitting Processing(Dyeing &

Printing) Finishing

C O T T O NL I N E N

J U T EH E M P & R E M I E

V E G E T A B L E( C e l l u l o s i c )

W O O LS I L K

A N I M A L( P r o t e i n )

M E T A L ( Z A R I )

M I N E R A L

N A T U R A L

V I S C O S E R A Y O NM O D A L

L Y O C E L L

S E M I - S Y N T H E T I C( R E G E N E R A T E D )

N Y L O NT E Y L E N E

O R L O N

S Y N T H E T I C

M A N M A D E

T E X T I L E F I B R E S

The process of making the yarn from a textile fiber is called Spinning.

Yarn is defined as a linear assemblage of the fibers twisted together.

B. Yarns are classed based on fiber length and method of processing

1) Blow room

a) Mixing bale opener b) Condenser & cagesc) Hopper feederd) Breaker scutcher e) finisher scutcherf) Lap forming unit

2) Carding3) Draw frame4) Speed frame 5) Ring frame

Make – lakshmi reater Model- lb 3/2

1) Reduction of bigger tufts of material into small size.

2) Removal of trash.

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.

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.

1) Condensation of loose fibre into sheet form.

2) Removal dust trough suction.

1) Reduction of tuft size.2) Opening cleaning & removal of trash.3) Condensation of fibre.

1) Maintaining uniform eveness .2) Feeding to finisher scutcher.

1) Extraction of trash by opening with two bladed beater.

2) Cleaning of the open material with dust removal.

1) Further cleaning by opening with krishner beater.

2) Maintain uniform evenness.3) Removal of dust.

1)Convert shed of fibre into lap.

1) Indiviualization of fibre.2) Removal of trash & dust.3) Removal of short fibre & nep.4) Conversion of lap into sliver.

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.

1) Parallelisation of fibre.2) Reduction in trash.3) Improving in uniform way by

doubling.

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.

1) Reduction of no. of fibre into sliver.2) Parallelisation of fibre & convert in

roving.

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.

1) Conversion roving into yarn.2) Improving the strength by twisting.3) Winding into suitable package.

The roving is fed into the Ring-frame and is made into yarn by further Drafting & Twisting.

Basic Functions of Ring Frame 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.

SUBMITTED BY: