Classification of commonly used blended dyes
1. Direct blended dyes
2. N-type direct dyes
3. Direct lightfast dyes
Dyeing process
Direct blended dyes
Dyeing process:
1. Dyeing of polyester/cotton and polyester/viscose blended fabrics
One-bath one-step dyeing process of dispersed/direct blended D-type dyes:
2. Dyeing process of cotton fabrics:
Note:
1. Leveling agent: dosage (g/L)
Light color: 1.5-2g/L;
Medium color: 1-1.5g/L;
Dark color: 0.5 -1g/L;
(Pingpingjia can also be used as a leveling agent, but the dosage can be reduced by 1/2. But no matter what kind of leveling agent it is, it is best to add it before adding the dye. , to ensure uniform dyeing.)
2. Dyeing accelerator: Yuanming powder (Na2SO4) dosage (g/L)
Light color: 2-5g/L;
Medium color: 5-10g/L;
Dark color: 10-20g/L;
(It is best to add it in the middle of dyeing to avoid excessive initial dyeing rate and color flowers. Sometimes , table salt can also be used, but the amount can be reduced by 1/2-1/3).
3. Color fixation treatment
Floating on the fabric after dyeing The color must be thoroughly washed to avoid being alkaline to fix the color.
Fixing agent 0-4% (o.w.f)
Liquor ratio 1:10-20, 50ºC×20min
The pH value should be 6 (adjusted with HAC) to facilitate polymerization inhibition and improve color fixation effect.
N-type direct dye
Dyeing process:
1. Dyeing of polyester/cotton and polyester/viscose blended fabrics
One-bath one-step dyeing process of dispersed/direct blended D-type dyes:
2. Dyeing process of cotton fabrics:
Note:
1. Leveling agent: dosage (g/L)
Light color: 1.5-2g/L;
Medium color: 1-1.5g/L;
Dark color: 0.5-1g/L;
(Pingpingjia can also be used as a leveling agent, but the dosage can be reduced by 1/2. But no matter what kind of leveling agent is best It is best to add it before adding the dye to ensure uniform dyeing.)
2. Dyeing accelerator: Yuanming powder (Na2SO4) Dosage (g/L)
Light color: 2-5g/L;
Medium color: 5-10g/L;
Dark color: 10-20g/L;
(It is best to add it in the middle of dyeing to avoid excessive initial dyeing rate. And produce colored flowers. Sometimes, table salt can also be used, but the dosage can be reduced by 1/2-1/3).
3. Color fixation treatment
Floating on the fabric after dyeing The color must be thoroughly washed to avoid being alkaline to fix the color.
Fixing agent 0-4% (o.w.f)
Liquor ratio 1:10-20, 50ºC×20min
The pH value should be 6 (adjusted with HAC) to facilitate polymerization inhibition and improve color fixation effect.
Direct lightfast dyes
Dyeing process
1. Dyeing of polyester/cotton and polyester/viscose blended fabrics
One-bath one-step dyeing process of dispersed/direct blended D-type dyes:
2. Dyeing process of cotton fabrics:
Note:
1. Leveling agent: dosage (g/L)
Light color: 1.5-2g/L;
Medium color: 1-1.5g/L;
Dark color: 0.5-1g/L;
(Pingpingjia can also be used as a leveling agent, but the dosage can be reduced by 1/2. But no matter Which leveling agent is best added before adding the dye to ensure uniform dyeing.)
2. Dyeing accelerator: Yuanming powder (Na2SO4) dosage (g/L)
Light color: 2-5g/L;
Medium color: 5-10g/L;
Dark color: 10-20g/L;
(It is best to add it during dyeing to avoid This will cause the initial dyeing rate to be too high and cause color flowers. Sometimes, salt can also be used, but the amount can be reduced by 1/2-1/3).
3. Color fixation treatment
Floating on the fabric after dyeing The color must be thoroughly washed to avoid being alkaline to fix the color.
Fixing agent 0-4% (o.w.f)
Liquor ratio 1:10-20, 50ºC×20min
The pH value should be 6 (adjusted with HAC) to facilitate polymerization inhibition and improve color fixation effect. </p
