Important Checking Points of Dyeing

Dyeing is the procedure of supplying colors to a textile fabric like fibers, yarns, and fabrics. It is devoid of doubt regarded as one of many substantive tough processes for textile engineers. During dyeing, textile engineer hope to supply deep subject on the a couple of troubles. He hope to supply ideal guidance to his supervisor or operator to do the 2 of the paintings as per schedule. If any faults occur throughout the route of dyeing procedure then it desire to in all likelihood impression on moderate procedure. Following checking troubles still protect throughout the route of dyeing procedure.

Fig: Dyeing operation

Checking Points of Dyeing:

Checking instrument/fluctuate

Requirements

pH: measured by virtual pH meter & pH measurement strip/paper

1. Enzyme/bio-sharpening

2. Cotton leveling

3. Salt in part tank

four. Dye tub

5. Fixing

6. Softening

7. Unload

As per alkali

Residual peroxide: by peroxide measurement strip

After per oxide killer

Hardness: by hardness measurement strip & titration procedure

1. Line water

2. Dye tub

3. Salt/soda

Less than 30 ppm

Specific gravity: by hydro meter

1. Salt in part tank

2. Dye tub

As per SG graph

Weighting of colors & chemicals: by virtual weighing stability

As per desires

Sample critically seem into

1. Before load

2. Bleaching

3. Enzyme

four. Dyeing shade critically seem into

5. Hot wash

6. Fixing

7. Unload

Information

1. Batch parameters in dye line

2. Operator be aware of

3. Load/unload date/time/shift, entire interval

four. Informations hooked up in unload folder

Before deliver dyeing

1. Condition of mechanical device

2. Pressure of air, steam, water line and the like

3. Machine sufficient from preservation

four. Batch inclined for dyeing

5. Lap dip, colour, batch help and the like inclined for dyeing.

During dyeing

1. Programme & procedure for that definite batch and colour.

2. Liquor ratio, chemical & colour fluctuate, time and

temperature of secure procedure steps

3. Cycle time, textile absorbency, bleaching whiteness, textile operating inner the mechanical device

four. Color &c hemical dissolving, relocating &

dosing. filtration of colour, checking reveal help throughout the route of processing it doesn't matter what large to offer protection to

5. Responsible operators, aiding still be existing in

front of mechanical device throughout the route of processing in distinguished for dyeing.

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