Yarn Manufacture Lab-I - 18213
 Periods/Week   Periods in one
Session 
Full
 Marks 
 Annual 
Exam
 Internal 
Exam
L T P/S
0 0 3 60 50 40 10

 

Rationale

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Objectives
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 CURRICULUM
SL Topics Periods
1. Mixing and Blending 06
2. Blow Room 27
3. Carding 12
4. Draw Frame 09
5. Combing 06
  Total 60

 

 CONTENTS
 Topics  Content Periods
01 Mixing and Blending 06
01.01 Study of various types of Cotton, Polyester, Viscose, Acrylic fibres etc. and its quality, properties such as length, Micronaire value, Denier and Trash) coming in mixing room.  
01.02 Study of the followings: Amount of Anti-static reagent used according to fibres and their blends, tinting of fibres, waste addition in mixing, average blend, mixing procedure for different fibres and their blends, relative humidity in mixing room, defects of wrong mixing in processing.  
01.03 Study of mixing through Mixing Bale Opener (MBO).  
02 Blow Room 27
02.01 Blow Room Machines (passage of the material through each m/c of blow room): Hopper Bale Breaker, Hopper Feeder, Porcupine opener, Vertical opener, Beaters, Step cleaner, Air jet cleaner, Spiro cleaner, Mono cylinder, ERM cleaner, and Scutcher (Conventional & Automatic Modern).  
02.02 Detail Study of the working of Blow Room machine in relation to setting, speed, performance.  
02.03 Sketching the line and gearing diagram of the blow room machines.  
02.04 Detailed study of Piano Feed regulating motion and cone drum.  
02.05 Knock off Motion.  
02.06 Study of Modern Blender and Bale Pluckers.  
02.07 Calculation of speed, production, hank of lap of blow room machine.  
02.08 Study of the chute feed system.  
02.09 Study of the Scutcher tests (Lap Evenness, Varimeter, Lap Weight Spot Test).  
02.10 Study of the performance assessment, process parameters, productivity and modernisation, effects of B/R performance and how to improve performance, high nep generation, high variability in lap, critical maintenance, lap defects and remedies, segregation of lap.  
03 Carding 12
03.01 Detailed study of the function of the Card in relation to various parts of the m/c and passage of the material through m/c.  
03.02 Sketching the line and gearing diagram of the carding machine.  
03.03 Practice on stripping, grinding, setting, card clothing.  
03.04 Practice on mounting of fillet to cylinder, doffer and flats.  
03.05 Calculation of speed, draft and production of the machine.  
03.06 Study of hank of lap and hank of sliver, size of the cams, waste extracted and disposal of waste, maintenance schedule.  
03.07 Study of quality control scheme charts, wrapping standards, temperature and humidity.  
03.08 Study of card sliver testing: Card Web Evaluation (Nip), Sliver Evenness and Sizing (c.v. %, U %), sliver weight.  
03.09 Study of the effect of poor carding performance and how to improve performance.  
03.10 Study of the productivity and modernization, process parameters.  
03.11 Study of the defects and remedies of card sliver.  
04 Draw Frame 09
04.01 Sketching the line and gearing diagram of draw frame and passage of the material through machine.  
04.02 Dismantling, refitting and resetting of the draw frame of different cotton and hank.  
04.03 Calculation of draft, speed and production of the machine.  
04.04 Study of hank of sliver fed and sliver delivered, size of the cams, waste extracted and disposal of waste, maintenance schedule (buffing etc.).  
04.05 Study of quality control scheme - charts - wrapping standards, temperature and humidity, stop motion.  
04.06 Study of Draw Frame sliver testing: sliver evenness and sizing (c.v.%, U %), sliver weight.  
04.07 Study the effect of Poor Draw Frame performance and how to improve performance.  
04.08 Study of the productivity and modernization, process parameters.  
04.09 Study of the defects and remedies of Draw Frame sliver.  
05 Combing 06
05.01 Preparatory Process for Combing:

Silver Lap Machine:

  • Sketching the line and gearing diagram of sliver lap machine and passage of the material through machine.
  • Calculation of speeds and production of the machines.

Ribbon Lap Machine:

  • Sketching the line and gearing diagram of Ribbon lap machine and passage of the material through machine.
  • Calculation of speeds and production of the machine.

Super Lap Machine:

  • Sketching the line and gearing diagram of Super lap machine and passage of material through this machine and also calculate its speeds and production.
 

 

 Scheme of Examination: Final Examination Marks = 40
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