Dyeing of PC blended Fabric with Disperse Dye to Produce Resist Effect

Last updated on July 17th, 2023 at 10:47 pm

Blended fabric is a collection of many artists work mixture of styles and a celebration of talent. Blends are any textile materials from fibres through yarn to fabric which are deliberate combinations of chemically or physically fibrous polymer. Under this definition, blends can range from bi-component fibres, mixture of different filament core spun yarn, uniformly blended staple fibre throughout fabric and everything which falls between.

Resist or Reserve Dyeing with Blends

At least one of the components of the blend remains essentially un-dyed i.e. almost white. Example: milens fabric, here in resists dyeing – cotton part remain un-dyed.

Resist Effect on Knitted Fabric Textile

Fibre and Fabric

Fibre: Cotton and Polyester

Fabric: Knitted


Any class of disperse dye. Slightly water soluble. They are made soluble with the help of some dispersing agent. Colorfastness of this dye is excellent. It gives a variety of shade.

Instruments and Glass Wares

  • Beaker
  • Glass rod
  • Measuring rod
  • Bowl
  • Electronic balance
  • Scissor
  • Sample dyeing machine
  • Pipette
  • Conical flask etc.

Dyeing of Polyester Part


  • Disperse red: 2%
  • Dispersing agent: 1g/l
  • Acetic acid: 1g/l
  • Sample: 1 : 20
  • Total liquor: 100
  • PH: 4.0 to 4.5

Chemicals and auxiliaries

  • Acid
  • Dispersing agent
  • Leveling agent
  • Buffer solution

Necessary Calculation

We know required dye in CC = (Sample wt. X shade %)/( Stock solution %)

Disperse red: 1% stock solution = (5 X 2%)/1% = 10CC

Required chemical in CC = (gm/l X Total liquor)/(stock solution%)

Dispersing agent: 1% stock solution = (1 X 100 X 100)/1000 = 10CC


Dye bath is set at 50-600C with buffering solution for maintaining PH 4 – 4.5. dispersing agents are applied in two stages. First half with dye solution. Rest half in the dye bath with fabric. Then the temperature is raised to 85 – 95% by 3 gradients. PH is checked here if there is any fluctuation then it is adjusted by buffer solution. Now raise the temperature to 1300C by 1.5 – 2 0C/min. Keep the entire bath running at 1300C for 30 – 60 minute depending upon the required depth of shade. Temperature is down by cooling 800C.



Acetic acid: 1gm/l


Acid: 1% stock solution = (1 X 100 X 100)/(1000 X 1) = 10CC

Water required = (1000 – 10)CC = 90CC


Neutralization is done to remove alkali from the fabric. 1gm/l acetic acid is used. Then treat the sample at 400C for 10 minutes.

Resist effect of PC fabric with disperse dye


  • Stock solution should be prepared carefully.
  • Time and temperature should be properly maintained.
  • Neutralization should be done properly.
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He is Abu Sayed, the founder of the blog site Textile Apex. He is a Textile Engineer having eight years plus practical experience in the Textile and Clothing industries. With a deep love for fashion and a keen eye for detail, he combines his creative flair with extensive knowledge to offer insightful and engaging content to his readers.
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One thought on “Dyeing of PC blended Fabric with Disperse Dye to Produce Resist Effect

  1. Dyeing on fibrous polymers may require certain steps to follow. The type of dye will define much for the results. In this instant, color fastness with other features is a key point to getting the good results.

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