Viscose Fabric Dyeing Process In 2022 (Update)

The viscose fabric dyeing process is so sensitive process in the dyeing industry. Viscose is regenerated cellulosic fiber. Its strength is not as good as cotton fiber. As a result, it needs extra care during processing. It is famous for its end uses. The soft hand feel and glossy effect make itself famous. viscose dyeing with reactive dyes because it is a cellulosic fiber. let’s discuss the process.

The knitted viscose fabric dyeing process is discussed below:

Viscose dyeing process step by steps:

Anticreaseing agent + Oil remover inject= Inject

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Raise Temp to 70⁰C

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Load fabric

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Runtime 5min

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Soda ash light dissing 7min

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Runtime 10min

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Drain

⇓

Scouring chemical inject = Detergent+anticreaseing agent+ secquestering agent

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Soda ash light dossing 7min

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Raise the temperature to 70⁰C

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Hydrogen Peroxide inject

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Raise the temperature at 80⁰C

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Runtime 15min

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Cooling at 75⁰C

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Shade check (Brightness)

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Drain

⇓

Raise temperature To 70⁰C

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Runtime 10 minute

⇓

Wash to clear water

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Drain fill

⇩

Inject acetic acid to neutralize the fabric

⇩

Inject Peroxide killer

⇩

Runtime 10 minute

⇓

Check with peroxide paper

⇓

If ok then drain and wash

⇓

Drain fill

⇓
Leveling Ph check 6.20

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Leveling Dosing at 60⁰C= 3 Minutes

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Color Dosing 25 Minute

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Runtime 10 minute

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1 st 10% Salt Dosing 15 Minute

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Runtime 10 Minute

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2nd 20% Salt dosing 15 Minute

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Runtime 10 Minute

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3rd 70% Salt Dosnig 15 Minute

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Runtime 10 Minute

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Salt Sample check (Levelness, availability of all colors)

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If everything ok

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1st 10% Soda dosing 15 minute

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Runtime 10 minute

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90% Soda dosing 25 minute

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Runtime 10 minute

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Sample check for shade

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If the required shade is ok then

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Drain & Wash for 10 minute

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Raise temperature at 80⁰C,

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Run for 10min

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Drain fill and Wash

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Soaping chemicals injected into the machine

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Temperature up to 90⁰C (According to shade)

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Runtime 10min

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Drain and wash until clear water

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Dossing the fixing agent for 5 minute

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Runtime 15 minute

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Drain fill wash

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Adjust ph 5

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Cationic Softener Dossing for 5 minute

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Runtime 10 minute

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Sample check for softness and final shade

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If ok then unload

Viscose Knit fabric dyeing process flow chart:

Viscose fabric dyeing process by Diagram or a time vs temperature Graph:

A time vs temperature graph of viscose fabric dyeing process by an image:

Viscose Dyeing Process Tips And Tricks:

• Batch preparation must have to be proper. (Hole, back sewing ).
• Must have followed the accurate process.
• Cycle time must be within 2 minutes to 2 min 30sec.
• Salt ph on dye bath must be below 7.
• Should not be used caustic soda.
• The cationic softener should not use for navy or black colors because it can create a white spot on the fabric. If need extra softness we can use a softener on stenter machine.

A complete viscose fabric dyeing process of the practical experiment:

Here I discuss a practical experiment from a famous knit dyeing factory.

• A complete viscose dyeing recipe
• A full dyeing sequence of a viscose single jersey fabric
• A finish fabric swatch of discussing experiment fabric.

Viscose dyeing recipe:

Chemical Name	G/L
Detergent	2.00
Anticreasing agent	2.00
Oil remover	1.00
Soda Ash Lt	2.00
H2O2	1.00
Peroxide killer	0.15
A. Acid	0.7
Leveling agent	2.00
Anticreasing agent	2.00
Dyes%
Glober Salt
Soda Ash Lt
Soaping agent	0.80
Anticreasing agent	1.00
Leveling agent	2.00
Core Neutralizer	0.70

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You can read some article below:

natural dyeing process of cotton- For practical use & experiment

textile dyeing process-for practical use

dyeing flow chart- with successful implementation practically 2021