1) The document is a presentation about blow room operations in textile engineering. It discusses the purpose of blow room, which is to open and clean cotton fibers for yarn production. 2) The blow room section uses several machines in succession to open compressed cotton bales, clean them by removing impurities, mix fiber grades, and form fibers into uniform laps. 3) Key blow room machinery includes opening, mixing, cleaning, and dust removal machines. The presentation provides details on the working principles and waste produced at each stage of blow room processing.

1. Welcome To my
Presentation

2. Shyamoli Textile Engineering College
A Constituent College of University of Dhaka
Presented By
Name: Al-Amin Mizi Babor
Dept: B.Sc. in Textile Engineering
Session: 2020-2021
DU Roll: 17
DU Reg: 631
Presented To
Name: Engr. Almamun Rony
Senior Lecturer and Head
Dept. Of Fashion Design and Apparel Engineering

3. Blow Room

4. Content
About Blow
Room
Operation of
Blow Room
Action in
Blow Room
Flow Chart of
Blow Room
Blow Room
Machinery
Wastage in
Blow Room
Conclusion

5. Blow Room
 The Blow Room is the
first step of yarn
production in the
spinning mill.
 If consist of a number of
machines used in
succession to open and
clean the cotton fiber to
the required
degree .About 40% to 70%
trash is removed in this
section.

6. Blow Room
 Blow room is the initial stage in spinning process. The
name blow room is given because of the "air flow" And
all process is done in blow room because of air flow.
 The section where the supplied compressed cotton bale
turns into a uniform lap of particular length by opening,
cleaning, blending or, mixing is called blow room
section. It is the first step of spinning. The section
consist a number of different machines used in
succession to open and clean the fibres.

7. Operation in Blow Room
Opening Cleaning
Mixing or
Blending
Lap
Forming

8. Opening
To open compressed bales of
fibers and make the cotton
tuft a small size as much as
possible.

9. Cleaning
To remove dust ,dirt ,broken leafs ,broken seed
and another foreign impurities.

10. Blending or
Mixing
To make good value of
yarn and decrease the
production cost mixing
different grade of
fiber.

11. Lap Forming
 To transfer the opened
and clean fibers into a
sheet from of definite
width and uniform unit
length which is called
lap.
 To role the lap of
predetermined length in
a cylindrical shape
around a pin.

12. Dust Removal
 Almost all manufacturers of
blow room machinery now
offer dust removing machines
or equipment in addition of
opening and cleaning.

13. Action in Blow Room
Action of opposite spike(opening)
The action of opposite spike is opening the cotton fiber. By this action, the large pieces of cotton have
been reduced in size.
Action of Air Current(Transport and Cleaning)
During processing ,the movement of cotton from machines to machine in done by air current . It also
helps the separation lint and trash.
Action of Beaters(Cleaning and Opening)
Beaters are responsible for removing almost all the impurity extracted in the blow room. Beaters also
helps in opening of cotton fiber.
Action of regulating motion(Uniform Output)
The action of regulating motion gives the uniform output of cotton fiber by the help of swing door swing
paddle.

14. Blow Room
Machinery
 Opening Machines
 Mixing Machines
 Cleaning Machines
 Dust removal Machines
 Recyling Machines

15. Wastage in Blow
Room
 Dropping
 Dust
 Filter waste

16. Conclusion
At the end of the
project it is quite clear
that how the different
machineries of blow
room are work
It is also helpful to
understand working
principle and layout of
blow room.

17. THANK YOU