M L Chemicals India Pvt Ltd

Other Details

TLP ACID WASH is M.L. latest development in the area of enzymes for finishing of cellulosic materials like cottons. Viscose, Tencel etc and is widely used for giving stone washed effect on Denims. TLP ACID WASH is a Acid cellulolytic enzyme. Enzymes are obtained on fermentation of genetically engineered, non - pathogenic moulds. TLP ACID WASHimparts greyish cast to the Indigo after enzyme washing.

ADVANTAGES OF USING ENZYMES:

1.Unlike stones, enzymes are specific in action and hence create a very consistent, homogeneous effect.

2.Enzymes are produced by controlled fermentation and hence batch wise quality can be maintained.

3.Fabric damage losses are almost nil.

4.Machine damage does not occur.

5.Enzymes are user friendly and the process is less laborious.

6.Washing discharges are completely biodegradable and hence eco-friendly.

Enzymatic “stone washing or Bio washing” as it is referred to comprises of 3 main steps:

      Desizing

      Bio washing

      Finishing

DESIZING :

This is the first step in Biowashing and involves the removal of the starch size from the denim fabric / garment using a starch – hydrolyzing enzyme system such as DEL DESIZING. Desizing is recommended to be carried out at an optimal pH range of 6.5 - 7.0 and an optimal temperature range of 65 - 70 deg C (150 – 160 deg F) for a period of 20 mins with a DELDESIZING dose rate of 4 to 6 grams per Kg of denim fabric / garment ( 1.4 oz per 100 lbs of denim fabric). However, the effective range of temperature and pH as well as the Enzyme dose level is wider than the above optimal range and may be adjusted based on individual requirements. M.L.’s Technical services will be only too pleased to provide any assistance on desizing.

Significance Of Size Removal:

If the size is not removed up to the desired extent, the crease marks might remain in the denim, Which in turn can cause streaks. The final effect and stiffness of the Denim can also be controlled by controlling the extent of desizing.

1.Denim Trousers etc., can be steam blown before desizing.

2.Pre wetting and soaking can be done with suitable wetting agents.

3.Trousers can be turned inside out while desizing.

4.Lubricators can be used while pre - wetting.

5.Enough water level during Desizing operation has to be ensured.

Bio Washing :

On completion of desizing which is traditionally checked by “ handfeel” to observe absence of “stickiness”, the liquor is drained and rinsed with plain water. The fabric / garment is then steeped in water at a ratio of approximately 1: 5 to 1:10 and the temperature is raised to 50 – 52 Deg C. The starting pH of water should be at 4.5 - 5.5 

TLP ACID WASH is then dosed at 5 - 10 gms per garment. Bio washing is carried out for a period of 60 to 90 mins depending on the tint and enzyme effect desired ensuring that the temperature is maintained between 50 - 52 Deg C