Study on the BLEACH WASH

Bleach wash:

Normally the fabric is dyed by the direct or reactive dye. That fabric of the garment is washed by bleach. In the washing, process color is removed. That means the faded effect to produce on the garment.

In bleach wash rather important timing because of over-washing can not be correct or reverse to less bleached condition.

The bleach wash is a very easy process. Just have to add a bleaching agent.

Recipe : 

Hydrogen per oxide - 5 m/l
caustic soda - 2%
Soda ash - 2%
Stabilizer - 2.5 %
Tmpt.- 80 degree Celsius.
Time - 10 min.
M:L - 1:5.

Flow Chart: 

Batching

↓

Desizing

↓

Washing

↓

Neutralization

↓

Softening

↓

Hydreextrator

↓

Drying

Working Procedure:

Batching

Loaded water and garment

Add desizing agent

Raise temp at 60-degree celsius and treated about 20 min.

Drop the liquid

Loaded the water

Add all chemical hydrogen peroxide, soda ash, caustic, stabilizer.

Raise temp at 80-degree celsius and treated about 10 min.

Drop the liquid.

loaded water 

Continuous wash at 60 degrees Celsius about 5 min.

Added water & acetic acid treat about 5 min.

drop the liquid

Added softener 0.5 - 1% at 60 degree  celsius

Bath drop

hydro extractor.

Drying

Quality control

storage

Delivery.

Process curve:

1 = Garment Batching

2 = Add all chemicals

3 = Bath drop

Advantages of Bleach wash:

1. The garment will be a fading effect.
2. The garment will be the removal of desizing materials.
3. The garment will be the increase in colorfastness.
4. The garment will be the increase in rubbing fastness.
5. The garment will be the fulfillment of the buyer's demand.
6. The garment becomes softer.

Remark :

we have to watch out during bleach wash. all chemical is very harmfully for the human body. We must wear protective toots and equipment.