Yarn production process/ Spinning process

Spinning Process

1. Presentation On
Yarn Manufacturing
11/29/2014
1
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

2. 11/29/2014
2
NAME:- ID No. :-

Md. Yousuf Hossain. 120103063

Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

3. 
Fiber:- A unit of matter characterized by flexible,
fineness, elasticity, sufficient strength and a high length
to width ratio.
e.g: Natural (Cotton, Jute, Wool, Silk)
Manmade (Viscose, Polyester)

Yarn:- Yarns are a grouping of fibers twisted together to
form a continuous strand.
e.g: Staple or filament yarn.
11/29/2014 3
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

4. 
Spinning:- Spinning is the process by which fibers are
converted into yarn.
Process flow chart of spinning-
Cotton Bale Blowroom
↓
Carding
↓
Drawing
↓
Combing
↓
Drawing
↓
Roving/ Speed/ Simplex Frame
↓
Ring Spinning Yarn

11/29/2014
4
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

5. 
Blowroom
The section where the supplied compressed bale is turned into
a uniform lap by opening, cleaning, blending or mixing.
11/29/2014 5
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

6. 
Functions of Blowroom:-
Opening: Open the cotton bales.
Cleaning: Eliminate dust, dirt, broken leaf, seed
particles, grass.
Blending / Mixing: By blending/mixing different
types of cotton produce a comparatively good
quality cotton.
Lap Forming: Convert the opened and cleaned
fiber into a sheet form.
11/29/2014 6
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

7. 
Flow Chart of Blowroom
(Modern):
Bale plucker
↓
Metal detector
↓
Uniclean
↓
Unimix
↓
Uni flex


Vision shield
↓
Condenser
↓
Chute feed
↓
Carding
11/29/2014 7
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

8. 
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.
11/29/2014
8 Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

9. 
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.

11/29/2014 9
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

10. 
Carding
Main Parts:
Taker-in: The region from lap roller upto cylinder is
known as taker-in.
Cylinder: The cylinder get opened with sharp teeth
and then pass over to doffer.
Doffer: The doffer take the cleaned cotton.
11/29/2014 10
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

11. 11/29/2014 11
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

12. 
Combing
The process of
straightening or
parallelizing of fibers
and removing of short
fibers and impurities
by using brushes and
rollers is called
combing.
11/29/2014 12
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

13. 
Objectives of Combing

To remove naps in the carded sliver.
To make the fiber more parallel and straight.
To produce a uniform sliver of required per unit length.
To remove the fiber shorter than a predetermined
length.
To remove remaining impurities in the comber lap.
Formation of sliver having maximum possible
evenness.


11/29/2014 13
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

14. 
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.
11/29/2014 14
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

15. 
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.
11/29/2014 15
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

16. 
Roving/Speed/Simplex Frame
Simplex is an intermediate process in which fibers are
converted into low twist lea called roving.
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Operations Involved in Simplex
Machine:
i.Creeling
ii.Drafting
iii.Twisting
iv.Winding
v.Building
vi.Doffing
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

17. 
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.

11/29/2014 17
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

18. 
Ring Frame
Spinning process is done by the Ring frame machine. Ring frame
converts the bobbin into yarn.
11/29/2014 18
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.
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

19. 
Advantage of Ring Spinning System:
i.Any type of material (fiber) can be spun.
ii.Wide range of count can be processed.
iii.It delivers a yarn with optimum characteristics.
iv.Idealized twisting system.
v.It is uncomplicated and easy to operate.
vi.Higher yarn strength can be achieved

Disadvantages of Ring Spinning System:
i.Low production.
ii.Machine generates more heat .


11/29/2014 19
Md. Yousuf Hossain, Green University Of Bangladesh, [email protected]

20. 
Thanks To All For Watching
This Presentation.
11/29/2014 20 [email protected]