Acid Wash Procedure on Denim Jeans

Acid wash on jeans:
The technology which is used to modify or change the appearance, outlook, comfort ability and fashion of the garments is called garment washing. It is done on the garments from heavy fabrics like denim and jeans. Today fashion is incomplete without denim. To change the look of denim or jeans different types of washing process are done. Among various washing process of denim, acid wash is the most popular. In this article I will discuss all process of acid wash on jeans.
acid wash on jeans
Fig: Acid wash on jeans
Purposes of acid wash on jeans:
  • To get regular fading effect on jeans.
  • To increase softness of the denim or jeans.
  • “Wash look” appearance is developed.
  1. Washing machine
  2. Hydro-extractor
  3. Tumble dryer
  4. Iron
  5. Packing machine
Raw materials:
  1. Jeans garments
  2. Peumic stone
  3. Desizing agent
  4. Detergent
  5. Potassium permanganate
  6. Phosphoric acid
  7. Softener
  • Jeans garment ------------------------------------------ Xpcs
  • Desizing agent ------------------------------------------ 1.5%
  • Potassium permanganate --------------------------- 2 Kg/L
  • Phosphoric acid --------------------------------------- 350 ml/L
  • Detergent ------------------------------------------------ 1.5%
  • Softener --------------------------------------------------- 1.5%
  • M:L --------------------------------------------------------1:10
  • Temperature ------------------------------------------- 600C
Acid washing process on Jeans:

1st step:
  1. A process of acid wash on denim trouser is discussed of a batch X pcs.
  2. Add water liquor ratio @1:5 -----------500 L
  3. Start machine running.
  4. Add desizing agent @g/l ----------------- 1 Kg
  5. Start steam supply to raise liquor temp at 600C
  6. Continue washing for 20 mins.
  7. Then drop the liquor
2nd step:
  1. Add liquor ratio @1:5 ----------------- 500 L
  2. Start machine running.
  3. Start steam supply to raise temp at 500C
  4. Continue treatment for 5 mins.
  5. Drop the liquor.
  6. Then unload the garments from the machine trolley.
  7. Load the pretreated garments in the drying machine.
  8. Dry the garments completely.
  9. Then unload the garments from garment drying machine.
  10. Keep the pretreated and dried garments separately.
Now, the pretreatment of peumic stone is to be done separately.

Make a stoke solutions as follows-
  • Water ---------------------------------------100 L
  • Potassium permanganate ----------------1.2 Kg
  • Phosphoric acid ---------------------------0.3 Kg
Mix the solution by stirring into a stainless steel or ceramic tube.

Soak the peumic stone in the chemical solution for 2 to 3 mins, suck the stones from the solution and keep the stones separately for air drying for new hours.

Acid washed jeans with Britney Spears
Fig: Acid washed jeans with Britney Spears
  1. Load the pretreated garments in the another washing machine --------- 30-40 Kg per.
  2. Load the pretreated stones in the washing m/c.
  3. Start m/c running for each batch ---------- 5 to 7 mins.
  4. Stop the machine running.
  5. Unload the treated jeans separately.
Load the stone treated jeans in another washing machine.

  • Batch size ------------------------------------- 100 Kg
  • Liquor ratio @1:5 ------------------------ 500 L
  • Detergent 1% ----------------------------- 1Kg
  • Temp --------------------------------------- 400C
  • Time --------------------------------------- 10 mins.
→ Drop the liquor.

Then, make a solution to treat with the stone treated garments.

  • Batch size -------------------------------------------- 100 Kg.
  • Liquor ratio @ 1:5 --------------------------------- 500 L
  • Softener ----------------------------------------------- ½ Kg
  • FWA/FBA @0.5 ------------------------------------------ ½ Kg
→ Continue treatment for 10 mins.
→ Drop the liquor.
→ Unload the garments.
→ Dry the garments.
→ Deliver the garments.


  1. Maintain properly stock solution and stock solution consistency.
  2. Count the garments when enter the machine and count the garments when washing is finished.
  3. Addition of stone carefully.
Acid wash is done to get irregular fading effect on the denim trouser. By this experiment we can achieve knowledge about how to wash the jeans with acid wash. This will help us in our professional life.

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