1. On
Enzyme Wash

2. Submitted by:-
Md.Ibrahim Khalil
ID:16173207095
Intake:19,Section:02
Department of Textile Engineering
Bangladesh University of Business & Technology

3. Enzymes are bio chemical substances that behave as
catalysts toward specific reactions. What makes very
interesting the enzymes under a chemical point of view is
their high specificity or in other words, their ability to
attack selectively a given substrate.

4. Objects of Enzyme wash
 To remove the size materials from the garments.
 To remove the starch presents on the garments
fabrics.
 For soft feeling to wear the garment.
 To achieve the buyer reference sample.
 To increase the color fastness & rubbing fastness.
 Especially develop the "Bio-Polishing" affect of
cotton/denim.
 Enzyme improves the anti-pilling properties.
 Enzyme attacks more the surface of the fabrics and
gives a very smooth surface.

5.  Simple process handling and minimum effluent problem.
 Better feel to touch and increased gloss or luster.
 Can be applied on cellulose and its blend.
 It allows more loading of the garment into machines.
 Environmental friendly treatment.
 Less damage to seam edges and badges.
 Use of softener can be avoided or minimized.

6. Acid Enzyme:
 Acid enzyme colour is slightly brown.
 pH range is 4.5 to 5.5
 Temperature -40°c -55°c.
 Time required 25 mts to 50 mts.
 Enzyme affects come within short time.
 Staining/Bleeding occurs more in garments.
 Production high.

7. Neutral Enzyme:
 Enzyme is slightly white powder form.
 pH range is 6 to 7.
 Temperature -40°c -60°c.
 Time required 40 to 70 mts.
 Enzyme affects come slowly.
 Less staining/bleeding on garments.
 With pumic stone comes good affect/abrasion on
garments.
 In dark shade enzyme affect comes good.

8. SL Enzyme:
 SL enzyme is liquid form.
 pH range is 6 to 7.
 Temperature range 40°c -60°c.
 Time required 45 to 80 mts.
 Enzyme affects come slowly.
 Less staining/bleeding on garments.
 With pumic stone come better affect.
 In dark shade enzyme affect comes good.

9. # First Step: Desizing
 Lot Size ............ 60 kg
 M : L = 1 : 9 .............. 540 Litre
 Run The Machine.
 Desizing agent @ 0.6gm / litre ............ 324 gm.
 Detergent @ 0.8gm / litre.................... 432 gm.
 Temperature.......................... 60°c.
 Time...............................10--20 min.
 Drop the liquor.
 Wash 1 time by cold water.

10. # Second Step: Enzyme Wash
 M:L = 1 : 8 .............. 450 Litre
 Acetic Acid @ 0.6gm / litre ................270 gm.
 Anti back staining @ 0.6gm / litre........ 270 gm.
 Acid Enzyme @ 2.00gm / litre ................ 900 gm.
 Temperature.......................... 45°c
 Time .......... (Depend upon the shade )...40--60 min.
 Increase temperature to 90°c and run 1 minute
(enzyme killing).
 Drop The Liquor.
 Rinse Twice, each 3 minutes.

11. # Third Step: Softening
 M:L = 1 : 8 ..................... 450 Litre.
 Acetic Acid @ 0.6gm / litre ............ 270 gm.
 Cationic Softener @ 1gm / litre.............. 450 gm.
 Temperature........................ Room Temp.
 Time ............................................. 15 to 20 min.
 Drop The Liquor.
 Then unload the garments.

12. # Fourth Step: Hydroextractor Machine
After unloading garments from the washing
machine then they are sent to hydroextractor
machine to remove excess water from the washed
garments.

13. # Fifth Step: Drying Machine
 Load 60 kg garments to gas dryer.
 Temperature set -75°c to 85°c.
 Run about 40 min.
 After then run 10 min in cold dryer.

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