Process Flow Chart Of Knit Fabric Dyeing With Reactive Dyes

Knit dyeing is near similar as yarn dyeing process but there is some difference in quality measurement. Generally all types of single jersey, double jersey and their derivatives are dyed by the following way.

Here, I have given a discontinuous dyeing process by hot brand reactive dyes. It is more practical process which is done in the dyeing industry. But the dyeing sequence and chemical brand can be different depending on the choice of the manufacturer. Also, some steps of dyeing can be removed or some steps can be added for better dyeing efficiency. Different dyeing parameter is also important to get better dyeing efficiency.

Fabric received from the batching section

Required amount of water was taken into the machine

The fabric was loaded and run for 5-10 minutes in normal temperature

CK-2, D-600/C, SQ-12UD and PH-100(Scouring Chemicals) were added at a time for 5 minutes

Caustic was added at normal temperature for 5 minutes

Temperature increased at 600 C

Hydrogen per Oxide (H2O2) was added for 5 minutes

Temperature increased at 950C and continues for 1 hrs

Sample check

Cold wash at 400C for 5-10 minutes

Hot wash at 950C for 5-10 minutes

Required amount of water was loaded

Croak-N was added

Acetic acid was added

Temperature increased at 800C for 15-20 minutes

Cold wash at 400C and drain

Water filled and Acetic acid was added

PH check at 4.5

Temperature increased at 550C

Enzyme (Bio-EC) was added and   run for 1hrs at 550C

Shade check

Cold wash at 400C and drain

Water filled/Required amount of water was taken

Temperature increased at 95-990C for 5-10 minutes

Cold wash at 400C and drain

Acetic acid was added

PH check at 4.5

EDX/200B and C/D-600 were added at a time

Salt dosing

Color dosing for 30 min

Run for 10 min

Soda dosing for 40 min

Run for 7 min

Temperature increase at 600C for 5 min

Run for 10 min

Shade check (OK)

Rinsing

Water was filled at required amount

PS-60 was added

Temperature increase at 800 C for 10 min

Hot wash at 900 C for 20 min and shade check in this time (OK)

Rinsing

Water was filled at required amount

Acetic acid was added for neutralization for 10 min

Shade check (ok)

ECO/FRD was added for 10 min

Rinsing

Water was filled at required amount

PH check at 6.5

(C.W.S) softener was added

Final shade checks and run for 20 min

Unload the dyed fabric

Various types of dyeing faults can be occurring due to wrong process. For this reason, quality control department should be aware about the quality of the fabrics.

4 thoughts on “Process Flow Chart Of Knit Fabric Dyeing With Reactive Dyes

  1. For further we follow the process chart how to accept our batch duration.
    Dear your process not accessible for production.
    This way good to check chemical only.

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