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What is Denim Washing?

Denim washing is the aesthetic finish, which is given to the denim fabric to enhance the appeal and to provide strength. In case of denim washing, several wash effects can be produced such as- color fading with or without patchiness, seam puckering, de-pilling, crinkles, hairiness etc. But denim washing follows a process flow-chart, by which all the mentioned effects can be achieved easily. As its importance in garments washing, the whole process flowchart of denim washing have discussed in this article.

Denim washed jacket

Process Flowchart of Denim Washing:

Garments received
↓
Dry process
↓
Send to wet process
↓
Garments loading in washing machine
↓
De-size
↓
Enzyme
↓
Bleaching (If needed)
↓
Neutralization
↓
Extracting
↓
Drying
↓
P.P spray
↓
Neutralization
↓
Tinting
↓
Softener
↓
Extracting
↓
Drying
↓
3D
↓
Curing
↓
Q.C check
↓
Delivery

The above all processes are discussed in the below table:

SL No.	Process	Procedure
01	Garments received	Firstly, denim garments should receive from the sewing department.
02	Dry process	If garments needed any types of dry process (Hand-sand, whisker, tacking etc), then it’s sent to the dry process section to do that.
03	Send to wet process	After completing required dry processes, garments sent to the wet process section.
04	Garments loading in washing machine	Garments are loaded into washing machine to complete the garments washing processes followed by the buyers approved wash reference.
05	De-size	De-sizing process is done here by using de-size chemical to remove size material from the garments.
06	Enzyme	According to buyers provided wash reference, enzyme washing process is done here by using enzyme chemical (Acid enzyme or Neutral enzyme).
07	Bleaching	According to wash reference, If bleaching process is needed to match with the desired shade then it’s done here by using bleaching chemical .
08	Neutralization	Bleaching chemical should be neutral here by using sodium meta bi-sulphite or sodium hypo. Each chemical choice depends on the instant situation of garments.
09	Extracting	Here, garments are extracted by using hydro extractor.
10	Drying	Garments are dried here by using gas dryer or steam dryer.
11	P.P spray	According to wash instruction, if garments have needed P.P effect, then P.P should be done here by using required chemical.
12	Neutralization	Here, P.P chemical have to neutral by using sodium meta bi-sulphite.
13	Tinting	Sometimes, tinting is needed for matching with the required shade.
14	Softener	This process is done here by using softening chemical. Its may be cationic or non-ionic softener.
15	Extracting	Garments are extracted here by using hydro extractor machine.
16	Drying	Here, all the garments are dried by using gas dryer or steam dryer.
17	3D	According to buyers approved wash reference, if garments needed 3D effect then 3D process is done here.
18	Curing	After applying 3D process, all the garments are cured here by using woven machine.
19	Q.C check	All the garments are checked here by maintaining buyers approved wash reference sample or shade band.
20	Delivery	Finally garments sent to the finishing department.