DIFFERENT TYPES OF DENIM GARMENTS WASHING-(Part 02)

After Part 01,

Potassium Permanganate Sponging/ Brushing: 

PP Spray is being done on denim garments to achieve local abraded area to appear whiter than back ground indigo color shade. This can be applied by sponges dipped in to PP Solution & rubbed on desired area followed by neutralization in wet process. This process can be done in rigid after doing hand scrape or in the middle of the wash. Doing after enzyme or bleach cycle will give more natural & white effect that doing in rigid. There are many additives can be added in order to achieve desired intensity and look.

In usual, it is done with regular paint brushes or the brushes are modified by cutting hairs in different shapes to produce new styles. Rather towels, sponges, straw bunches or other objects are also used to create effects. What it is seen, is that most merging and beautiful effects are created with towel. Towel dipped in solution are drawn over the garment very lightly. This produces random effect and looks great with dark washes in contrast.

This process is very complicated & needs highly skilled operators to execute it followed by immediate neutralization.

Tinting:

Tinting is a process where very less amount of tint is involved & mainly direct dye is being used to do this process. This is being done to change hue/cast/tone of indigo. As soon as quantity of tint color increases & it cover up indigo, reaches the level of dyeing. Tinting being used to give garments a used / vintage & muddy look. These processes takes from 5 minutes to 25 minutes time for better results followed by dye fixing & clean up of superficial dye.

Bleach Wash:

Bleach wash or light stone wash refers to light blue shades of denim. The additional step is bleaching to stone wash. This bleaching is usually carried out by strong oxidizing agents. In industry, most widely used chemicals are sodium hypo-chlorite, calcium hypochlorite, hydrogen per oxide and potassium permanganate. Other than that many products with different brand names are available in market.

Caustic wash:

Caustic wash generally doing on Reactive dye, Sulphur dye, Direct dyed or printed Garments

Caustic wash is required for the following reasons:

• ·         To fading/old looking affect on Garment and seam abrasion affection seam area.
• ·         To remove the size materials, starch from the garments.
• ·         To increase the color fastness & rubbing fastness.
• ·         For soft feeling to wear the garments.
• ·         To increase the hairiness on garments.
• ·         To achieve the buyer reference sample.

To Be Continued.............