PRESENTATION ON

MODERN BLOWROOM LINE

Mohammad Neaz Morshed 2010200400029Hridam Deb 2010200400033

H. M Asad Jaman 2010200400031Soikot majumder 2010200400030

Sagoto Jahan Sunny 2010200400034Mahfuzur Rahman 2010200400036

Tanvir Ahmed 2010200400035Wasiq Islam Emon 2010200400039

Prepared By

ACKNOWLEDGEMENT

FINALLY WE HAVE DONE OUR PRESENTATION COMLETELY, AND WANT TO GIVE THANKS TO ALMIGHTY ALLAH. THANKS TO OUR HONARABLE COURSE TEACHER MR. SANWAR RASHID FOR HIS HELP AND SUPPORT.

OUR ALL MEMBERS IN THE GROUP WERE VERY MUCH ATTENTIVE ABOUT IT WITH FOLLOWING CATEGORIES…….

SERIOSUSNES

SINCERITY

ACTIVENESS

INTRODUCTIONWith all harvesting methods, however, the cotton seed, together with the fibers, always gets into the ginning plant where it is broken up into trash and seed-coat fragments. This means that ginned cotton is always contaminated with trash and dust particles and that an intensive cleaning is only possible in the spinning mill. Nep content increases drastically with mechanical harvesting, ginning and subsequent cleaning process. The reduction of the trash content which is necessary for improving cotton grade and apperance unfortunately results in a higher nep content level. These processes are performed in Spinning section, specially in Blow room.

BLOWROOM 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. Blow room is consisting of different machines to carry out the objectives of blow room. In blow room the tuft size of cotton becomes smaller and smaller. Mixing of cotton is done separately as well as in blow room. Compressed layer of bale is also open in blow room with the help of machine.

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Objectives of Blowroom:

Following are the basic operation or objectives of blow room Opening Cleaning Mixing or blending Micro dust removal To extract the contamination in the cotton such as leaf, stone, iron particles, jute, poly propylene, colored fibers, feather and other foreign material from cotton by opening and beating. To uniform feeding to the next stage such as carding machine Recycling the waste material

Operation involved in Blowroom line: 1. Opening

2. Cleaning

3. Mixing and blending

4. Lap forming

5. Dust removal

Critical success factors for

Blowroom:

Cleaning efficiency Fiber growth

Factors affecting on opening, cleaning and

fiber loss.1. Type of opening device

2. Speed of opening device

3 .Size of flocks in the feed

4.Thickness of feed web

5.Density of feed web

6.Degree of penetration

7.Fiber coherence

8.Fiber alignment

9. Distance between feed and opening device

10. Through put speed of materials

11. Type of grid bar……etc

Technical points in Blowroom:Opening in blow room means opening the cotton in small pieces. That is the specific density of material is reduced. A lot of impurities and contamination are eliminated at the start of the process. As much opening of cotton will be more, cleaning result will be more acceptable. But this cleaning of cotton is done on the basis of high fiber loss. High roller speed gives more better cleaning effect but also more stress on fiber. Cleaning efficiency of cotton is depending upon trash Percentage. It is necessary to control the temperature inside the department, when use stickiness cotton……..etc.

Cleaning machines of Blowroom:

Modern machines.Step cleaner.Dual roller cleaner.Moneylender cleaner…..etc

CONVENTIONAL

BLOWROOM LINE

MODERN BLOWROOM LINE

BLOWROOM LINE

MODERN BLOWROOM

LINE

In most cases a modern blowroom line consists of the following machines:

Blowroom line: 1.Bale opener2. Pre-cleaner

3. Homogenous mixer

4. Storage and feeding machine

5. Condenser; 6. Card

7. Sliver Coiler

ABOUT RIETER

Rieter is an industrial group based in Winterthur, Switzerland, and operating on a global scale. Formed in 1795, the company is a leading supplier of short-staple spinning machinery and technology components, and has the widest product range in this industrial sector worldwide. Rieter has a presence in 9 countries with 18 manufacturing facilities and a worldwide workforce of about 4 500 employees, some 26% of whom are based in Switzerland.

RIETER MODERN BLOWROOM LINE

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Advantages of rieter blowroom line:

1. Efficient progress

from bale to sliver

2. Carefully coordinated processes

3. Optimal setting

4. Uniform distribution,

precise feeding

5. Efficient

recycling

6. Everything under control

7. The certainty of

success

MAIN MACHINE SEQUENCE IN RIETER BLOW ROOM LINE:

Unifloc (A11) (BDT)

Uniclean (B11) (CLP)

Unimix (B70) (MXU)

Uniflex (B60) (CLC3)

A 11 UNIfloc automatic bale opener:

The foundations for yarn quality and thus the quality of the textile end product are laid in the blowroom process. This is the basis of the successful use of Rieter’s UNIfloc A 11 automatic bale opener worldwide. The UNIfloc A 11 processes the fiber material gently and efficiently into microtufts, from which impurities can be removed very readily in the subsequent processes. This effectively supports the quality and economic efficiency of yarn manufactureEconomy

Quality

Flexibility

FlexibilityThe UNIfloc can process up to 4 assortments simultaneously. The width of the take-off unit can be selected between 1 700 and 2 300 mm.Cottons of all origins and man-made fibers up to a staple length of 65 mm are processed.

QualityOpening bales into microtufts provides the basis for effective cleaning and dedusting by subsequent machines. The double tooth profile ensures gentle extraction of the tufts irrespective of the direction of rotation of the take-off roller. Automatic bale profiling enables quality consistency to be maintained in subsequent cleaning processes

.Economy

Quality

Flexibility

EconomyThe UNIfloc is designed for output of up to 1 400 kg/h (carded sliver). Bales are laid down over a length of 7.2 to 47.2 meters. Automatic bale profiling eliminates labor-intensive manual alignment of the bales.

B 12 UNICLEAN PRE CLEANER:

The UNIclean B 12 is an effi cient cleaning and dust extracting machine which is used directly downstream from the bale opening. Cotton and other natural fi bers such as fl ax can be cleaned and freed from dust. Feeding of the card room is guaranteed for a total of 1 400 kg/h card sliver production.

ECONOMY

FLEXIBILITY

SYSTEM MODULE

TECHNOLOGY

FLEXIBLEFor all types of cottonEasy adjustment whilst runningMultiple assortment operation possible

ECONOMICAL

FLEXIBLE

SYSTEM MODULE

TECHNOLOGY

SYSTEM MODULEPart of the Rieter blowroom philosophyConnection to the blowroom control system UNIcontrol orUNIcommand

TECHNOLOGYHigh cleaning performanceIntensive dust extraction

ECONOMICAL•Production of up to 1 400 kg/h card sliver•Available for lower production rates of up to •1 000 kg/h card sliver.•Optimum raw material utilization•Low air and space requirements•Low maintenance

.

Uniflex (B60)::

Material comes from preceding machine and then filling the chute. Thus in the chute , a very homogeneous batting lay down is formed both lengthwise and crosswise.

The material is carried further by a perforated drum and a plain drum.

The feed roll supplies the material to the opening cylinder.

A grid made of carding segments and knives forms the cleaning surface and extracts impurities.

1 = Filling Chute

2 = Perforated drum

3 = Feed zone

4 = Grid

5 = Opening Cylinder

6 = Delivery

ECONOMICAL

FLEXIBLE

SYSTEM MODULE

TECHNOLOGY

B 72 UNImix homogeneous mixer:The B 72 / B 76 mixing machine guarantees homogeneous, intimate mixing of the bale feed in a minimum of space, even with unfavorable bale lay-down. The unique 3-point mixing process is equally suitable for cotton and man-made fibers. Eight mixing chambers ensure not only effective mixing, but also high production performance. The large storage volume of the UNImix provides the ideal preconditions for a high degree of operating autonomy in the blowroom.

Economy

Quality

Flexibility

EconomyThe production volume of 800 kg/h (B 72) or 1 200 kg/h (B 76) results in an excellent price/performance ratio with comparably low space requirements.The large storage capacity ensures regular feeding of the downstream blowroom machines and is the precondition for the production of quality yarn without personnel intervention.

Quality•The unique 3-point mixing principle with 8 mixing chambers produces a good, permanently homogeneous fiber mix. This is the precondition for consistently high yarn quality.•Tuft size can be adjusted at the mixing roller in coordination with raw material and application; optimal opening and homogeneous feed to the subsequent process are thus guaranteed.

Economy

Quality

Flexibility

FlexibilityThe easy addition of an opening or cleaner module provides flexibility with the capability to respond to changes in market conditions.The ability to process cotton, blends and man-made fibers means that there are no limitations when processing different raw materials.Bypass facility for the cleaner module (e.g. with man-made fibers) for rapid mix change

.

CONCLUSIONBlow room machinery lay out should be desined in such a way that there should be minimum number of bends, and there should not be sharp bends to avoid fibre entanglements. Fibre travelling surface should be smooth and clean.Temperature should be around 30 degrees and the humidity is around 55 to 60%. But enough care should be taken to synchronise the machines for better performace , and to run the line without any electrical system breakdowns.

THANKS FOR YOUR PASSION…………