Classification and Objects of Scouring
Desized textile materials till contain oil, fats and waxes which are removed by alkali or detergent is called scouring.
- To remove natural and added oils, fat and wax’s from the textile materials.
- Improve hydrophylicity.
- Improve absorbency.
- Prepare for the next process.
- To get uniform bleaching result.
Flow chart of scouring
There are two types of scouring process-
- Hand Scouring
- Machine Scouring
In this process fabric is boiled in an open trough with NaOH common soda and
t.r oil for after a few hours. But be careful so that fabric does not come in contact with air otherwise fabric strength can be reduced. After that wash with cold water sour with dilute HCl to remove alkali from the fabric.
Now a day’s various types of machines are available for scouring with alkali. This alkali treatment can be divided into three categories.
- Lime acid soda process.
- Caustic soda process.
- Soap soda process.
Engineer Sheikh Nurja
B.Sc engineer of textile
Merchandiser at buying house
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