02 January, 2011

Total Finishing Process of a Fabric


FINISHING
Sequence of Finishing process
Slitting
Padding
Drying
Stentering
Compacting
Inspection fabric
Delivery

Machine description
·        Slitting machine
o       Squeezer rpm -20-50 vary from machine to machine
o       Company name : Monforts
o       Made in : Germany
o       Controlling system: Automatic and manual
o       Capacity : 700kg/3500 kg
o       Breaking capacity : 16 KA
o       Working power : 12 KW
o       Monitoring voltage : 24v ac
o       Voltage : 400 v
o       Frequency : 50 Hz
·        Padding machine
o       Company name : Monforts
o       Made in : Germany
o       Section : two
1.     Water padding
2.     Chemical padding
o       Chemical :
o       Softener (FPG, spamming,  CWS)
o       Silicon softener
o       A. Acid
o       Controlling system : Automatic
*    Over feed (+)= GSM high
*    Over feed (-) = GSM low
*    Under feed (+)=  GSM low
*    Under feed (-)= GSM high
*    Width tension high= low GSM

·        Dryer machine :
o       Company name : Monforts
o       Chamber no : 04
o       Controlling system : Automatic
o       Temperature control :
·        Light shade : 120-130
·        Dark shade : 150-160
·        Heat setting : 195-220
o       Motor no: 8
o       Burner : 4
o       Made in : Germany

·        Stenter machine:
o       Company name : Monforts
o       Brand name : Montex 5000
o       Motor no : 8
o       Burner no : 5
o       Chamber : 5
o       Controlling system : Automatic
o       Temperature control :
v    Light shade : 120-130
v    Dark shade : 150-160
v    Heat setting : 195-220
o       Made in : Germany

·        Compactor machine :
o       Company name : Ferraro
o       Made in : Italy
o       Speed of machine : (25-50) very from machine to machine
o       Controlling point : Temperature and pressure.
o       Controlling system : automatic
o       Heat is absorbed from steam.



Procedure:

  1. At first the tube fabric is opened with slitting machine. The opened fabric which are sewed before dyeing also opened  with the help of the slitting machine. Here the R.P.M of the slitting Squeezer is controlled carefully. The 70-80% of water is removed by this process. The slitting machine also increase the dimensional stability of the fabric.

  1. After doing this the fabric is passed throw the padding machine. Two types of padding is done here. One is water padding and another is chemical padding. Water padding is done for the removal of dyed chemicals and unnecessary material and to wash out the fabric finally. After water padding, chemical padding is done to give the fabric soft handle and maintain the pH of the fabric. Here softener, Silicon softener and Acetic Acid is used. For the control of G.S.M and width of the fabric Over feed and Under feed is carefully done to maintain required quality. When the Over feed is High, G.S.M of the fabric is also high. When the under feed is high, G.S.M is low. When width are increased G.S.M of the fabric is decreased.


  1. After padding the fabric the fabric is then sent to drying unit to dry out the fabric and to give the fabric proper shade. There is temperature controlling system for the control of required shade. For light shade, temperature is kept to 120-130°C. For dark shade the temperature is kept within 150-160°C and for heat setting the temperature of the dryer is kept within 190-220°C

  1. Stentering is done to maintain the fabric to required G.S.M and to give the fabric soft handle. The stenter machine can increase and decrease the width of the fabric. It can also increase and decrease the G.S.M of the fabric. Shade% is also controlled here. After passing the drying unit of the fabric, fabric is then passed through the stenter unit for accurate G.S.M and for accurate dia.


  1. After stentering the fabric, it is then passed through the Compactor machine for final finishing of the product of fabric. Shade % is control through the steam and temperature. To produce light shade high steam and high temperature is applied. For dark and medium shade, low temperature and steam is applied. The program is set by a computer.

  1. Compact fabric is rolled and sends for inspection. There is a lot of method for the measurement of fabric fault. Different types of fabric fault are shown on the surface of the fabric. One of the measuring system is 4 Point system which is internationally approved.

Different types of finishing fault shown in inspection

1.     BIAS and BOW
2.     Stain
3.     Abrasion mark
4.     Dirty or soil
5.     Water mark
6.     Shiny mark

4 point system measuring process

1.Point defect up to 3”
2.Point defects >3”<6”
3.Point defects>6”<9”
4.Point defects>9”
and hole 1 square 2 points and above 4 points

From the required weight and finished dia and finished G.S.M Length in Yard is calculated.
Length = (weight×43055.47)÷finished dia ÷ finished G.S.M
After measuring length, the average points per order are calculated.
The average point per order={(total points×36)÷(lengths × cuttable width)} × 100

         

2 comments:

wade said...

GSM machine, also known as fabric weight GSM, is mainly used in textile fabrics, leather, copper foil, glass fiber and other industries, used to measure the weight of product unit area.

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