Enzyme Bleach Wash Recipe details & Flow Chart

 Objective: To achieve a faded look with a soft hand feel on denim or other garments using enzymes and bleach.

 

Recipe Components

1. Water:
• 7:1 liquor-to-fabric ratio (e.g., 70 liters of water for 10 kg of fabric).
2. Detergent:
• Dosage: 0.5–1 g/L.
• Purpose: Removes surface dirt and prepares fabric for enzyme action.
3. Soda Ash (Sodium Carbonate):
• Dosage: 1–2 g/L.
• Purpose: Adjusts pH to the optimal range for enzymes (pH 6–7).
4. Enzyme (Cellulase):
• Dosage: 1–3% of fabric weight.
• Purpose: Breaks down surface fibers, creating a worn effect and softness.
5. Bleach (Sodium Hypochlorite):
• Dosage: 1–3 g/L (depending on the desired fade level).
• Purpose: Lightens the fabric to achieve a faded effect.
6. Anti-back Staining Agent (Optional):
• Dosage: 0.5–1 g/L.
• Purpose: Prevents redeposit ion of dyes onto the fabric.
7. Acetic Acid:
• Dosage: As needed (for neutralization).
• Purpose: Neutralizes alkali and stops enzyme/bleach activity.

 

Process

1. Load the Fabric: Add garments into the washing machine or drum.
2. Pre-Wash:
• Water at 40°C.
• Add detergent and run for 10 minutes.
3. Enzyme Treatment:
• Adjust pH to 6–7 using soda ash.
• Add cellulase enzyme.
• Run at 50–55°C for 20–30 minutes.
4. Bleach Application:
• Lower the temperature to 30–40°C.
• Add sodium hypochlorite gradually.
• Run for 10–15 minutes until the desired shade is achieved.
5. Rinse:
• Rinse thoroughly with water to remove residual bleach.
6. Neutralization:
• Add acetic acid to neutralize any remaining alkali or bleach.
• Rinse again to remove all residues.
7. Softening (Optional):
• Add a softener (1–2 g/L) during the final rinse for enhanced softness.