Pretreatment

Pretreatment process is a process which is carried out before dyeing and finishing in order to allow easy and efficient dyeing and finishing. It is essential to remove contamination and?dirt?from the fabric.

Pretreatment processes are as follow

Process

Objective

Method/Chemical

1. Singeing To remove fuzz and fiber for smoother fabric surface

Flame

2. Desizing Removing Starch

Enzyme, Oxidising Agent, Soap

3. Scouring Removing dirt, fat, seedก

Caustic Soda, Soap

4. Bleaching Bleaching and Removin Cottong Seed

Oxidising Agents

5. Mercerization Causing fiber to swell, gain lutrous appearance and become easier to dye

Caustic Soda