SCOURING PROCESS

Scouring process is a prepare process before the fabric will be continued process. The scouring process can be disappearing component of fiber compiler like oils, candle, grease, mucks, etc whom on fiber surface.

The reaction on this process by cotton with caustic (NaOH) is :

R – COO – H + NaOH ---> R – COO – Na + H2O

Ø Recipe :
1. Caustic 38˚Be = 10 cc/l, or
2. Crystal caustic = 4 -5 g/l
3. Tepol = 2 cc/l
4. Na₂CO₃ = 1 g/l
5. Volt of water = 1 : 30
6. Time = 1 – 2 hours
7. Temperature = 95˚C

Ø Fungtion of the chemical
1. Caustic = to changing the grease to be a soap which soluble in water
2. Water = to soluble the chemical
3. Na₂CO₃ = to soft the water
4. Tepol = to reduce stained of fabric surface

Ø Work manner
1. Prepare the materials and chemicals
2. Soluble the chemicals on beaker glass
3. Include the fabric into beaker glass
4. Heated the liquid until boil during 2 hours
5. Take the fabric from beaker glass after processed, press the fabric, warm washing, cold washing, and the last drying process

The chemicals used have to appropriate with water necessity. It is very important to stability of fabric.