A kind of non-pretreatment dyeing method of polyester-cotton blended fiber
A technology of polyester-cotton blending and dyeing methods, which is applied in dyeing methods, textiles and papermaking, etc., can solve the problems of cumbersome production process of polyester-cotton blended fibers, and achieve the effects of improving labor efficiency, reducing the consumption of auxiliaries, and reducing
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Embodiment 1
[0018] Embodiment one: the package weight is 1kg, and the density is 0.36g / cm 3 , The bobbin is a regular cylinder with uniform yarn density and no obvious unevenness on the surface. Specific steps are as follows:
[0019] 1) Dyeing polyester: put polyester-cotton blended fiber into water, the bath ratio is 1:6, after finishing, add oil-removing spirit into the master vat to make the concentration of oil-removing spirit 1g / L, keep warm at 90°C for 10 minutes, and drain; Hot water, keep warm for 10 minutes, drain after washing; add warm water, and then add dispersant RDT 1g / L, AB acid 1.5g / L and E-type disperse dyes into the main tank, the E-type disperse dyes are specifically BlueE-RPD0.036 %, Red E-RPD 0.012% and Yellow E-RPD 0.001%, heat at 135°C for 30 minutes, cool down to 80°C after completion, and drain;
[0020] 2) Reduction cleaning: Put in warm water, add reduction cleaning solution into the main tank, its formula is 3.5g / L sodium hydrosulfite, 3g / L caustic soda, 1g...
Embodiment 2
[0025] Embodiment two: the dyed fiber is in the state of warp beam, with a weight of 1.05kg and a density of 0.4g / cm 3 , the beam density is 0.49g / cm 3 , there is no obvious unevenness on the surface of the warp beam. The specific steps are
[0026] 1) Dyeing and washing: Put the polyester-cotton blended fiber into the water, the bath ratio is 1:10, add 2g / L of degreasing spirit into the main tank after finishing, keep warm at 90°C for 10min, drain; add hot water, keep warm for 10min, wash and drain Add warm water, add 1.5g / L dispersant RDT, 1.5g / L AB acid and disperse dyes to the master vat after finishing, the disperse dyes are specifically Blue SE-RPD 0.56%, Red SE-RPD0.01%, Yellow SE -RPD 0.02%, keep warm at 135°C for 50 minutes, then cool down to 80°C and drain;
[0027] 2) The reduction cleaning process is as follows: add warm water, add reduction cleaning solution into the main tank, the formula is 4g / L sodium hydrosulfite, 3.5g / L caustic soda, 2g / L cleaning agent WO...
Embodiment 3
[0032] Embodiment three: the dyed fiber is the state of the package yarn, the package yarn weight is 1.05kg, and the density is 0.4g / cm 3 , the bobbin is a regular cylinder with the same density. The specific steps are
[0033]1) Dyeing and polyester: put polyester-cotton blended fiber into water, the bath ratio is 1:16, add 3g / L of oil-free spirit to the main tank, keep warm at 90℃ for 10min, drain; add hot water, keep warm for 10min, after washing Drain; pour into warm water, add dispersant RDT 2g / L, AB acid 1.5g / L and disperse dyes into the main tank after completion, disperse dyes are BKSWF 2.5%, RSWF 0.1% and YSWF 0.8%, keep at 135 ℃ for 50min, After cooling down to 80 ℃, drain;
[0034] 2) Reduction cleaning: pour warm water, add reduction cleaning solution to the main tank, the formula is 5g / L of sodium hydrosulfite, 4g / L of caustic soda, 3g / L of detergent WOLR, keep at 85°C for 20min, drain, and wash twice by reduction ; After finishing, add warm water, add acetic a...
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