Flow Chart of Critical Shade Dyeing

Critical shade dyeing:

We know that dyeing is the process of adding color to textile products like fibers, yarns, and fabrics. Dye fixing in fiber, yarn, and fabric in several processes with chemical, temperature, and pressure. But in some cases, the dye is not fixed up in an easy way and the color does not stay. Those dyeings are called critical shade dyeing.

Flow Chart of Critical Shade Dyeing
Critical Shade (Khaki, Olive, Brown) Dyeing Processes

Lab dip receive

Input id number entry

Recipe making→ from data color

Recipe calculation

Preparing

Fabric weighting & fabric input

Fabric input into dye bath for dyeing

750 C * 15 min

Cooling to 600 C * 15 min (Alkali Dosing)

600 * 60 min

Cooling to 400 C

Unloading

Cold wash

Acid wash

Soaping

Squishing

Drying

Shade matching

Shade ok
­­­­ ↓
Lab dip cutting

Submit to buyer

Buyer approval
↓ok
Send to floor

Garment dyeing, one of the finishing operations, allows the manufacturer to produce special color effects that may not be feasible from continuous processed fabric. The demand from retailers for rapid response to fashion and color changes has resulted in some specialty garment manufacturers producing products. That can meet this requirement using fabric that has been previously prepared for dyeing when the garment is made. The made-up garments, then processed to their respective colors by specialized garment dyers. Thus, short runs of a specific product are therefore possible with the advantage of more economical garment production when only an uncolored fabric is being used. This reduces wastage and lowers the cost of stock when only a single fabric type is required.

Normally we dye fiber, yarn, or fabric. Then dyed and finished will use for making garments. In the case of garment dyeing, the garments will make from grey fabric and then the garments are dyed in the required color and shade.

Author of this Article:
Rana Sohel 
Executive Engineer 
Sunman Textile Mills Ltd. Chittagong 
Cell: +8801912-420118 
Email: rsohel07tex@gmail.com

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