Method and application of dyeing and finishing of pure cotton fabrics
A processing method and fabric technology, applied in the direction of dyeing method, improved handle fiber, dry-cleaning fiber products, etc., can solve the problems of poor fabric feel, high cost, low efficiency of sand washing process, etc., and achieve good alkali resistance and soft feel , Improve the effect of color fastness
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Embodiment 1
[0083] Gray fabric: pure cotton 40s / 110×90 non-mercerized semi-finished product
[0084] The above-mentioned gray cloth after the pretreatment is processed through the following steps in turn:
[0085] Dyeing (jig dyeing): the reactive dye used is reactive blue 198 (two monochloro-s-triazine reactive dyes), the concentration is 0.4% owf; the number of dyeing passes is 4, and each pass runs for 20 minutes. Carry out dyeing promotion, the number of channels for promoting dyeing is 4, each channel runs for 20 minutes, add alkali to fix the color, the number of channels for color fixing is 4;
[0086] Sand washing: the dyed fabrics enter the overflow machine for sand washing, add a mixture of 20g / L sodium metasilicate and 20g / L sodium bicarbonate as sand washing aids, first raise the temperature to 98°C, keep warm for 20min, and then Then cool down to 40°C, keep warm for 30 minutes, and drain;
[0087] Water washing: first wash with hot water at 80°C for 10 minutes twice; then e...
Embodiment 2
[0128] Gray fabric: pure cotton 40s / 110×90 non-mercerized semi-finished product
[0129] The above-mentioned gray cloth after the pretreatment is processed through the following steps in turn:
[0130] Dyeing (jig dyeing): the reactive dye used is reactive blue 268 (two-fluoro-s-triazine group reactive dye), the concentration is 0.3% owf; the number of dyeing passes is 4, and each pass runs for 20 minutes, adding sodium sulfate Carry out dyeing promotion, the number of channels for promoting dyeing is 4, each channel runs for 20 minutes, add alkali to fix the color, the number of channels for color fixing is 4;
[0131] Sand washing: the dyed fabrics enter the overflow machine for sand washing, add a mixture of 20g / L sodium metasilicate and 20g / L sodium bicarbonate as sand washing aids, first raise the temperature to 98°C, keep warm for 20min, and then Then cool down to 40°C, keep warm for 30min, and drain;
[0132] Water washing: first wash with hot water at 80°C for 10 min...
Embodiment 3
[0139] Gray fabric: pure cotton 40s / 110×90 non-mercerized semi-finished product
[0140] The above-mentioned gray cloth after the pretreatment is processed through the following steps in turn:
[0141] Dyeing (jig dyeing): the reactive dye used is reactive blue 198 (two monochloro-s-triazine group reactive dyes), the concentration is 0.5% owf; the number of dyeing passes is 2, and each pass runs for 20 minutes, adding sodium sulfate Carry out dyeing promotion, the number of channels for promoting dyeing is 2, each channel runs for 20 minutes, add alkali to fix the color, and the number of channels for color fixing is 4;
[0142] All the other are identical with embodiment 1.
[0143] The finished product obtained in Example 3 was tested, and the test results are shown in Table 7.
[0144] The detection result of table 7 embodiment 3
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[0146]
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