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Dryer Machine For Knit Fabrics

Presentation about 'Dryer Machine For Knit Fabrics'

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Dryer Machine For Knit Fabrics

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  1. PICTURE BASED PRESENTATION

  2. Prepared By : Prepared By : Mazadul Hasan sheshir ID: 2010000400008 13thBatch (Session : 2009 - 2013) Department : Wet Processing Technology Email: mazadulhasan@yahoo.com ( Facebook) Blog : www.textilelab.blogspot.com Southeast University Department Of Textile Engineering I/A 251,252 Tejgaon Dhaka Bangladesh

  3. Drying is defined as a process where the liquid portion of the solution is evaporated from the fabric. In Relax dryer machine in BKL containing 2 Gas burner, 2 Chamber, 8 Blower and 2 Conveyer net.

  4. Dryer machine is used for removing the residual water contained in the fabric after squeezing by applying heat on the fabric. In this machine the fabric is fed on the drying net at low over feed speed and the humidity is continuously measured. Drying is done by applying heat through burner nozzles. During drying the total heat passed through the machine is extracted by the exhaust fan

  5. • To dry the fabric with the help of blower and burner. • To control the shrinkage of the fabric. • To prepare the fabric for next subsequent process. • To dry fabric without tension. • To remove residual water containing in the fabric.

  6. • Measuring tape. • Die-cutter. • Electronic Balance. • Expander. • Scissors. • Trolley.

  7. • To clean the machine properly. • To clean the trey for every chamber. • To check the proper activity of burner. • To check over feeding and vibrating. • To check the conveyor belt.

  8. Working principle of dryer: After dewatering then the fabric through the dryer. the main function of the dryer is given below: -To dry he fabric -To control the overfeed system. -To control vibration which increase the GSM. The m/c contain two chambers. two mesh endless conveyors are placed lengthwise to the chamber named conveyor net and filter net . each chamber contain aburner, which supply hot air. This hot is guided through he ducting lin by suctionfan. there are a nozzel placed in btnfilter and conveyor net. when fabric pass through on the conveyor net, hot air is supplied to the wet to dry it. there are exhaust fan which such he wet air and deliver to tea to through the ducting line. The speed of dryer depends on the temp. ofhe m/c & GM of the fabric. If the m/c temp.is high& m/c speed also high and the m/ c temp. is low then mc speed also low. The vibration speed of the m/c for heavy fabric is 730m/min and normal fabric is 480m/min.

  9. Machine Parameter Temperature Setting Set Up Value (100-120) for white shade, (120- 130) for light shade, (130-140) for dark shade, (150-170) for curing. Auto Auto 3-35 m/min (depends on quality). 0-40% (depends on construction). 45-114 cm (depends on the required width of fabrics). 10-15 M/Bar. Blower Fan Setting Exhaust Fan Setting Machine Speed Over Feed Width of Expander Setting Burner Gas Pressure

  10. For cotton fabric: Temperature0C Fabric Type Overfeed % Speed (m/min) Folder Speed (m/min) Vibration Color White Color High G.S.M Low G.S.M 150-1600C 130-1500C Single Jersey 30 % to-40% 15-20 20-25 2~3 As Required 130-1500C Single Lacoste 30 % to-35% 2~3 As 160-1650C Required 15-20 20-25 155-1600C 130-1500C Polo Pique 30 % to-40% 15-20 20-25 2~3 As Required 2~3 165-1700C 130-1500C Interlock 30 % to-40% 14-18 22-24 As Required As Required 10-18 3~4 155-1600C 130-1500C Grey Mélange 30%-40% 20-22

  11. Temp. (oC) Over feed Fabric Type Vibration Ext. Temp. Speed (oC) (%) S/J White 110 25-30 750 65 30 Color 100-165 10-35 500-750 70 10-45 PK White 130-140 35 750 65 20-30 Color 140-150 30-35 700-750 70 20-30 1X1 Rib Tube 140-150 10-20 700-750 65-70 25 Open 140-150 20-35 700-750 65-70 25 P. Interlock 120-140 35 750 65-70 25 Mercerized Grey 165 - - 80 5-10 Fabric 1X1 L. Rib 120-150 20-35 700-750 65-70 20-30

  12. Dryer- (multifunctional) Band name:- Santex Origin: – China M/C Type- Santashrink progress. Year of construction- 2008 Chamber: -4 Com.no: 6960/2600(mm) Elect-Voltage: 3×400/50(Volt/Hz) Connected Load: 193/435(KW/A)

  13. Schematic Diagram of a Dryer Machine

  14. Input Fabrics In to the Dryer

  15. 1. To dry the fabric. 2. To control the hand Feel 3. To control the Twist 4. To control the shrinkage + Dia + Gsm

  16. 1. Drying Net. 2. Heating Chamber: 3. Blower. 4. Burner. 5. Free Roller. 6. Centering Roller. 7. Scroll Roller. 8. Folder. 9. Rubber Belt for fabric delivery. 10. Exhaust fan.

  17. 1. Overfeed . 2. Temperature . 3. Padder pressure . 4. Speed .  Heating chamber: 4  No of burner: 4

  18. 1. Shade check 2. Width check 3. Fabric faults (color spot, uneven, hole, Dia,mark, ec).

  19. Checking parameters: 1. Overfeed ( %) : It depends on fabric structure & GSM 2. Temperature: It depends on color & GSM.( normally for single jersey -1600C, for high GSM, like-fleece, it may be 2500C ) 3. Speed: It depends on fabric GSM. For higher GSM, lower the speed. GSM Up to 120 120-140 140-200 200-250 Over feed 14-15% 12% 7-8% 5-6%

  20. Temperature:-Set the temperature between 1300c -1500c for white and 1500c -1700c for color fabric. If GSM increase than the temperature is increase Or, if moisture content increase than temperature is also increase.  Set the over feed up to 25~50% or as required to get finish G.S.M.  Set the speed as much as possible (6~20m/min). GSM speed

  21. N.B: If fabric is more Redder than the standard one, then reduce the temperature. If fabric is more Yellower than the standard one, then increase the temperature. If fabric is more Bluer than the standard one, then increase the temperature.

  22. In Stenter and Dryer machines air is recirculated which passes from the exhaust sluts and air controller flaps. Then the air is passed over the nozzles through which fabric is passed and routes it over to the heat exchanger which lets the air to be heated by the burner. The circulating air fan allows the hot air to pass uniformly through the nozzles to the fabric where the air controller flaps control the upper and lower nozzle air and thus the fabric is heated. Finally the used hot air is passed on to the exhaust air duct.

  23. Monforts Dryer (Dynair 5000):

  24. No. of Chamber: 4 No. of Burner: 4 No. of Padder: 1 No. of Expander Roller: 5 (Motor Controlled) No. of Free Roller: 13 (Easy Controlled) No. of Blower: 4 No. of Finger Roller: 4 Capacity: 6 tons/day Maximum Temperature: 180oC Minimum Temperature: 100oC Fabric Passing Speed: 8 m/min to 50 m/min (Depends on fabric type, temperature & dry requirement i.e. half dry/full dry) Maximum Over feed (%): 60% Minimum Over feed (%): -10% Maximum Fabric Dia Capacity: 260 cm Minimum Fabric Dia Capacity: 85 cm

  25. Standard Operating Procedure: • Machine should be cleaned • Padder should be cleaned • Stenter pin should be checked • Tray of each chamber should be cleaned • Function of auto chamber should be checked • Padder pressure should be adjusted • Function of burner should be checked • Overfeeding speed should be checked • Conveyor belt should be checked • Dancing roller should be checked.

  26. Work Instruction: Type of Fabric Over feed (%) Temperature (oC) Stretch (%) Non- -10/60 100-180 35 S/J Mercerized Mercerized -10/60 100-180 45 Dyed (Yarn) -10/60 160-180 35 Dyed -10/60 160-180 45 Mercerized White -10/60 100-150 50 PK Dyed -10/60 160 50 White -10/60 100-150 20 1X1 Rib Dyed -10/60 160-180 Maximum White -10/60 100-150 50 P.I.L. Dyed -10/60 160 50

  27. Find out the limitations and faults of the machine and advise for removing these. • Selvedge drying system is not properly functioning. • Maximum over feed of the machine is +60%. • When the steam temperature is 1000C-1200C, then delivered fabric temperature is 45-500C. But there is no cooling zone in this machine to reduce the excess temperature. So a cooling zone in delivery zone can be attached.

  28. Mordan Shrink recovery Dryer

  29. My Facebook Textile related Pages http://www.textilelab.blogspot.com 1. Yarn Manufacturing Technology Link:http://www.facebook.com/pages/Yarn-Manufacturing-Technology/485014954866808 2. Fabric Manufacturing Technology Link:http://www.facebook.com/pages/Fabric-Manufacturing-Technology/459520217425605 3. Garments Manufacturing Technology Link:http://www.facebook.com/pages/Garments-Manufacturing-Technology/472364799463126 3. Wet processing Technology Link:http://www.facebook.com/pages/Wet-Processing-Technology-Dyeing-/468645219825404 4. Fashion-Design-and-Technology Link:http://www.facebook.com/pages/Fashion-Design-and- Technology/587655294583875?ref=ts&fref=ts

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