'Comparative Study report of some reactive dye in exhaust and padsilicate method'



For system setting in reactive dye following variable factor we have to observe:


1)  Machine

2)  Substrate

3)  Electrolyte

4)  Water

5)  Chemical Auxiliaries

6)  Selection of dyes

7)  Process selection


Here in bottom all lab trails we are concentrating more on Process selection and selection of dyes only. Each series of reactive dye shows excellent result in different section of textile so totally dye selection entirely depends upon us which series will be suitable for any working shop floor condition. This study has been done on cotton twill woven fabric which does not mean it is final conclusion but it is just shows that process selection and selection of dye is very important. Take only expert view only.


We have selected following dyes for our trail:-

1)       Reactive C.I Blue-21

2)       Reactive C.I Black 5

3)       Reactive RFT series dye


i.      For Reactive C.I Blue 21 trail process

Lab Trail done:

Substrate: Cotton Twill quality

Count: 20 cotton count.

Dye selected: Corazol T Blue G (Reactive C.I Blue 21)

Exhausted Dyeing % shade selected: 1% owf.


Cold Pad Batch (Silicate process) gram per litre of Reactive C.I Blue 21 selected:-10 gpl (Without Salt and with glauber salt 10 gpl also).


Batching time selected: 16 hour and 32 hour.


In cold pad- batch process sometime batch rotation time is increased from 16 hour to more than 24 hour. It is really very interesting to see whether result is affected.