Table of Contents
Knit Fabric Dyeing
Knit dyeing is near similar to the yarn dyeing process but there is some difference in quality measurement. Generally, all types of single jersey, double jersey, and their derivatives are dyed in the following way.
Knit Fabric Dyeing Process With Reactive Dyes
Here, I have given a discontinuous dyeing process by hot brand reactive dyes. It is a more practical process that 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
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The required amount of water was taken into the machine
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The fabric was loaded and run for 5-10 minutes at normal temperature
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CK-2, D-600/C, SQ-12UD, and PH-100 (Scouring Chemicals) were added at a time for 5 minutes
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Caustic was added at normal temperature for 5 minutes
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The temperature increased at 600 C
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Hydrogen per Oxide (H2O2) was added for 5 minutes
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The temperature increased at 950C and continues for 1 hrs
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Sample check
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Cold wash at 400C for 5-10 minutes
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Hot wash at 950C for 5-10 minutes
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The required amount of water was loaded
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Adding Croak-N
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Adding acetic acid
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The temperature increased at 800C for 15-20 minutes
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Cold wash at 400C and drain
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Filling water and adding Acetic acid
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PH check at 4.5
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The temperature increased at 550C
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Adding The enzyme (Bio-EC) and run for 1hrs at 550C
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Shade check
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Cold wash at 400C and drain
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Filling required amount of water
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The temperature increased at 95-990C for 5-10 minutes
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Cold wash at 400C and drain
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Adding acetic acid
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PH check at 4.5
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Adding EDX/200B and C/D-600 at a time
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Salt dosing
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Color dosing for 30 min
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Run for 10 min
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Soda dosing for 40 min
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Run for 7 min
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Temperature increase at 600C for 5 min
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Run for 10 min
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Shade check (OK)
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Rinsing
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Filling water at the required amount
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Adding PS-60
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Temperature increase at 800 C for 10 min
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Hot wash at 900 C for 20 min and shade check-in this time (OK)
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Rinsing
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Filling water at the required amount
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Adding acetic acid for neutralization for 10 min
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Shade check (ok)
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Adding ECO/FRD for 10 min
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Rinsing
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Filling water at the required amount
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PH check at 6.5
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Adding (C.W.S) softener
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Final shade checks and run for 20 min
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Unload the dyed fabric
In sum, various types of dyeing faults can be occurring due to the wrong process. For this reason, the quality control department should be aware of the quality of the fabrics.
6 comments
shankar
simply awesome im just recalling what i learned in industry
Md Bodiul Alam Mozumder
This Process is good But like of so longer,now hope that short hand time due to costing Value should be more less.
Amin
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.
Salim Md. Morshed
This page is excellent .
mahmudul hasan arif
nice
Abu Sama
i want to know about dyeing…..