Polyester/Cotton (P/C) Blends Fabric Dyeing: Recipe, Parameters, Flowchart and Dyeing Curve

Last Updated on 26/12/2020

Polyester/Cotton (P/C) Blends Fabric Dyeing: Recipe, Parameters, Flowchart and Dyeing Curve

Engr. Kazi Zakaria Ahmed
M.Sc. in Applied Chemistry & Chemical Technology (IU)
B.Sc. in Textile Engineering (DU)
Lecturer, Department of Garments & Textile Engineering
BCMC COLLEGE OF ENGINEERING & TECHNOLOGY
Jessore-7400, Bangladesh
E-mail: iamzakdude@gmail.com

 

RECIPE AT DIFFERENT STAGES IN DYEING COTTON FABRIC:

PRETREATMENT
Ingredient Quantity
Wetting agent (Sun Mori CK-1) 0.5 g/l
Anti creasing agent (Texport D – 600) 1.3 g/l
Sequestering agent (Sirrix-SQ) 0.5 g/l
Caustic 3 g/l
Stabilizer (Neorate PH-100 ) 1 g/l
Hydrogen per oxide (H2O2) 3.5 g/l
Peroxide killer(Crocks-N) 1 g/l
Neutralization
Acetic acid 1 g/l
Enzyme treatment
Acetic acid 0.3 g/l
Bio –polish EC 1 g/l
Dyeing
Acetic acid for leveling agent 0.3 g/l
Levelling agent (Neocrystal EDX/200B) 1 g/l
Anti creasing agent (Texport D – 600) 1.5 g/l
Dyes
Salt 40% owf
Soda 15% owf
After Treatment
Fixing agent (Neofix ECO/Cibafix FRD) 0.5 g/l
Soaping agent(Lipotol PS-60) 0.8 g/l
Acetic acid 1 g/l
SOFTENING
Acetic acid 0.2 g/l
Softener( Perrostol CWS) 1 g/l

Table No-1: Recipe at different stages in cotton dyeing.

RECIPE FOR MACHINE WASH:

Ingredient Amount
Detergent (Solax) 0.5 gm/L
Caustic 1 gm/L
Hydrous 2 gm/L

Table No- 2: Recipe for m/c wash.

Different parameters in DYEING:

A. pH
During peroxide bleaching & scouring 9-11
During enzyme treatment 4.5-5
Before addition of leveling agent 6-6.5
Before addition of color softener(Perrustol IMA-500) 6-6.5
Before addition of  white softener(Perrustol VNO-500) 4.5-5
Softener at stenter & de-watering 5.5-6
Silicon softener 5.5-6
Reactive dyeing 10.5-12
Disperse dyeing 4.5-5.5
B. Temperature
For cotton scouring 95-110˚C
For cotton cold wash 40-50˚C
For cotton hot wash 70-80˚C
For cotton acid wash 60-70˚C
For cotton dyeing 80˚C ( For hot brand)/60˚C(For cold brand)
C. Time
For scouring and bleaching 60-90 minutes
For reactive dyeing 60-90 minutes
For disperse dyeing 60-90 minutes

Table No-3: Different parameters of dyeing.

Process of Polyester/Cotton (p/C) Blends Fabric Dyeing:

  1. In blends fabric dyeing, at first the Polyester Part dyeing same as Polyester Dyeing.
  2. Then the Cotton Part dyeing same as Cotton Dyeing.

Dyeing Procedure of polyester fabrics with Curve:

Required amount of water filled

Fabric was loaded and run for 10 min.

Drain

Required amount of water filled

CK-2 and oxalic acid was added for 5 min.

Run for 20 min. at 80˚C

Rinse for 15 min.

Drain

Required amount of water filled

Formic acid added for PH- controlled

Check PH at 4.5

Leveling agent (DIF) added for 10 min.

Temperature increase at 60˚C

Color/Dyes added for 15 min.

Run for 10 minutes

Temperature increases at 130˚C for 30 min.

Run for 30 minutes

Cooling at 80˚C

Shade check

Rinsing for 15 min.

Drain

Required amount of water filled

Hot wash at 80˚C

Shade check

Rinsing for 15 min.

Unloading

Reduction Cleaning-

Caustic Dosing (600C X 6 min)

Raising Temp at 130˚C

Hydrose injection
(Run time- 10 min at 80˚C)

Normal wash

Drain

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Dyeing Curve of Polyester
Figure-1: Dyeing Curve of Polyester.

Cotton Dyeing Steps with Curve:

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 60˚C

Hydrogen per Oxide(H2O2)was added for 5 minutes

Temperature increased at 950C and continue for 1 hrs

Sample check

Cold wash at 40˚C for 5-10 minutes

Hot wash at 95˚C for 5-10 minutes

Required amount of water was loaded

Croak-N was added

Acetic acid was added

Temperature increased at 80˚C for 15-20 minutes

Cold wash at 40˚C and drain

Water filled and Acetic acid was added

PH check at 4.5

Temperature increased at 55˚C

Enzyme (Bio-EC) was added and run for 1hrs at 55˚C

Shade check

Cold wash at 40˚C and drain

Water filled/Required amount of water was taken

Temperature increased at 95-99˚C for 5-10 minutes

Cold wash at 40˚C 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 60˚C for 5 min

Run for 10 min

Shade check (OK)

Rinsing

Water was filled at required amount

PS-60 was added

Temperature increase at 80˚C for 10 min

Hot wash at 90˚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 shades check and run for 20 min

Unload the dyed fabric

You may also like: To Improve the Wettability and Dyeability of Polyester and Polyester Blended (P/C) Fabric by Using Sericin

Dyeing Curve of Cotton
Figure-2: Dyeing Curve of Cotton
Scouring & Bleaching Curve.
Figure-3: Scouring & Bleaching Curve.
Enzyme Treatment Curve
Figure-4: Enzyme Treatment Curve.

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