Enzyme Washing Process for Dark, Medium and Light Shade of Denim

Last Updated on 07/06/2022

Enzyme Washing Process:
Enzyme washing is a laundering process which uses enzymes to clean clothing or to finish fabric, especially in the case of heavy fabrics like jeans and other garments with a worn-in look. Cellulase enzyme is used for this type of wash. These cellulose enzymes hydrolyses the projecting hairy cotton fibers of the garments fabric surfaces and also removes color.

Heavy enzyme or vintage wash is used to get the old or used appearance. Garments are washed inside a washing machine with enzymes. Enzyme washing is performed with a kind of live cell, which can break some of the fibers of fabric and can give the fabric a special effect, desired on the garment. Enzyme wash provides the fabric a soft, sanded or ‘peached’ effect that is very desirable on many garments. Enzyme wash is also useful for indigo denims.

In this case, enzyme can replace stone but gives denim a stone-wash look, with a better and nicer blue and white contrast on the fabric. Enzyme wash is, however, costlier than stone wash.

Enzyme Washing Process for Dark Shade of Denim:
The enzyme washing process of batch of 60 kgs denim men’s long pants (trouser) are described below:

First Step: Desizing

Lot weight (80 pes) ………… 60 kg denim long pant.
Add water @ L: R = 1: 9 i.e. 540 liter
Machine Running.
Temperature…………………….. 60°c.
Add desizing agent @ = 0.6 gm / liter i.e.324 gm.
Add Detergent @ = 0.8 gm / liter i.e. 432 gm.
Time………………………….. 20 minutes.
Drop the liquor.
Wash by cold water.

Second Step: Enzyme

Add water @ L: R = 1: 8 i.e. 450 liter
Temperature…………………….. 45°C.
Add Acetic Acid @ = 0.6 gm / liter i.e. 270 gm.
Add Anti Back staining @ = 0.6 gm / liter i.e. 270 gm.
Increase temperature to 90°C and run 1 minute
Drain the bath.
Rinse twice, each 3 minutes.

Third Step: Softening

Add water @ L: R = 1 : 8 i.e. 450 Liters.
Add Acetic Acid @ = 0.6 gm / liter i.e. 270 gm.
Cationic Softener @ = 1 gm / liter i.e. 450 gm.
Temperature = Cold.
Time = 15 to 20 minutes.
Drain the bath.
Then unload the garments on trolley.

Fourth Step: Hydro-extractor Machine
After unloading garments from the washing machine then they are sent to hydro extractor machine to remove excess water from the washed garments.

Fifth Step: Drying Machine

Load 60 kg garments to gas dryer.
Temperature set = 75°C to 85°C.
Run about 40 min in hot dryer.
After then run 10 min in cold dryer.

Sixth Step: Delivery
After dryer, garment goes to quality section for quality checking and good one delivery.

Enzyme Washing Process for Medium Shade of Denim:
The enzyme washing process of batch of 60 kgs denim men’s long pant (Trouser) is described below:

First Step: Desizing

Lot weight (80 pes) ………… 60 kg denim long pant.
Add water @ L: R = 1: 9 i.e. 540 liter
Machine Running.
Temperature…………………….. 60°C.
Add desizing agent @ = 0.6 gm / liter i.e.324 gm.
Add Detergent @ = 0.8 gm / liter i.e. 432 gm.
Time………………………….. 20 min.
Drop the liquor.
Wash by cold water.

Second Step: Enzyme

Add water @ L: R = 1: 8 i.e. 480 liters
Temperature = 45°C.
Add Acetic Acid @ = 0.6 gm / liter i.e. 288 gm.
Add Anti Back staining @ = 0.6 gm / liter i.e. 288 gm.
Add Acid Enzyme @ = 2.00 gm / liter i.e. 900 gm.
Time (Depend upon the shade) = 40-60 min.
Drain the bath.
Rinse Twice, each 3 minutes.

Third Step: Bleaching

Add water @ L : R = 1 : 7 i.e. 420 liters
Temperature = 50°C to 60°C.
Add chlorine bleach (k.c.i) @ = 20 gm / liter i.e. 4200 gm.
Add soda ash @ = 2 gm / liter i.e. 840 gm.
Time (Depend upon the shade) = 12 to 15 min.
Drop the liquors.
Rinse twice, each 3 minutes.

Fourth Step: Neutralization

Add water @ L : R = 1 : 10 i.e. 600 liters
Temperature = 40-50°C.
Add sodium hypo sulphite @ = 2 gm / liter i.e. 1200 gm.
Add detergent @ = 0.5 gm / liter i.e. 300 gm.
Time = 10 to 15 min.
Drop the liquor.
Rinse Twice, each 3 minutes.

Fifth Step: Softening

Add water @ L: R = 1 : 8 i.e. 480 liters.
Add Acetic Acid @ = 0.6 gm / liter i.e 288 gm.
Cationic Softener @ = 1 gm / liter i.e. 480 gm.
Temperature = Cold.
Time = 15 to 20 min.
Drain the bath.
Then unload the garments on trolley.

Sixth Step: Hydro-extractor Machine
After unloading garments from the washing machine then they are sent to hydroextractor machine to remove excess water from the washed garments.

Seven Step: Drying Machine

Load 60 kg garments to gas dryer.
Temperature set = 75°C to 85°C.
Run about 40 minutes.
After then run 10 minutes in cold dryer.

Eighth Step: Delivery
After dryer garment go to quality section for quality checking and good one delivery.

Enzyme Washing Process for Light Shade of Denim:
The enzyme washing process of batch of 60 kgs denim men’s long pants (Trouser) are described below:

First Step: Desizing

Lot weight (80 pces) = 60 kg denim long pant.
Add water @ L: R = 1: 9 i.e. 540 liter
Machine Running.
Temperature = 60°C.
Add Desizing agent @ = 0.6 gm / liter i.e.324 gm.
Add Detergent @ = 0.8 gm / liter i.e. 432 gm.
Time =15-25 minutes.
Drop the liquor.
Wash by cold water.

Second Step: Enzyme

Add water @ L : R = 1 : 8 i.e. 480 liter
Temperature = 45°C.
Add Acetic Acid @ = 0.6 gm / liter i.e. 288 gm.
Add Anti back staining @ = 0.6 gm / liter i.e. 288 gm.
Add Acid Enzyme @ = 2.00 gm / liter i.e. 960 gm.
Time (Depend upon the shade) = 40-60 minutes.
Increase temperature to 90°c and run 1 minute (enzyme killing).
Drain the bath.
Rinse Twice, each 3 minutes

Third Step: Bleaching

Add water @ L : R = 1 : 7 i.e. 420 liter
Temperature = 50°C to 60°C.
Add chlorine bleach (kCl) @ = 20 gm / liter i.e. 8400 gm.
Add sodium bi-carbonate @ = 4 gm / liter i.e. 1680 gm.
Time (Depend upon the shade) = 12 to 20 minutes.
Drop the liquor.
Rinse twice, each 3 minutes.

Fourth Step: Neutralization

Add water @ L : R = 1 : 10 i.e. 600 liters
Temperature = 50°C.
Add sodium hypo sulphite @ = 2 gm / liter i.e.1200 gm.
Add detergent @ = 0.5 gm / liter i.e. 300 gm.
Time = 10 to 15 minutes.
Drop the liquor.
Rinse Twice, each 3 minutes.

Fifth Step: Hot wash

Add water @ L: R = 1: 8 i.e. 480 liter
Temperature = 60°C.
Add hydrogen peroxide @ = 4 gm / liter i.e. 1920 gm.
Add caustic soda @ = 1 gm / liter i.e. 480 gm.
Add detergent @ = 1 gm / liter i.e. 480 gm.
Time = 10 minutes
Drop the liquors.
Rinse Twice, each 3 minutes.

Sixth Step: Softening

Add water @ L : R = 1 : 8 i.e. 480 liters.
Add Acetic Acid @ = 0.6 gm / liter i.e. 288 gm.
Cationic Softener @ 1 gm / liter………….. 450 gm.
Temperature = Cold.
Time = 15 to 20 minutes.
Drain the bath.
Then unload the garments on trolley

Seventh Step: Hydro Extractor Machine
After unloading garments from the washing machine then they are sent to hydroextractor machine to remove excess water from the washed garments.

Eighth Step: Drying Machine

Load 60 kg garments to gas dryer.
Temperature set = 75°C to 85°C.
Run about 40 minutes.
After then run 10 mts in cold dryer.

Ninth Step: Delivery
After dryer garment goes to quality section for quality checking and good one delivery.

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Mazharul Islam Kiron

Founder & Editor of Textile Learner. He is a Textile Consultant, Blogger & Entrepreneur. He is working as a textile consultant in several local and international companies. He is also a contributor of Wikipedia.