Raccoon dog hair fiber bleaching and decoloration method
A technology of fiber and raccoon fur, which is applied in the field of bleaching and decolorization of raccoon fur fiber, which can solve the problems of unfavorable dyeing of bright color or light color, dark color, etc., and achieve the effect of soft hand feeling, simple decolorization process and less damage
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Embodiment 1
[0019] A method for bleaching and decolorizing raccoon fur fibers, said process comprising:
[0020] (1) Degreasing: wash the raccoon fur fiber with a degreasing agent at 50°C for 30 minutes, rinse and dry;
[0021] (2) Pretreatment: Mix 8g / L ferrous sulfate heptahydrate with 2g / L sodium bisulfite, in a closed space at a temperature of 70°C, a pH value of 3.5, and a bath ratio of 1:40 Carry out pretreatment to the degreased raccoon hair fiber, the treatment time is 30min;
[0022] (3) Cleaning: prepare a sodium bisulfite solution with a concentration of 2g / L, and use the 2g / L sodium bisulfite solution to clean the pretreated raccoon hair fibers for 10 minutes;
[0023] (4) Bleaching: the concentration of hydrogen peroxide is 15ml / L, the concentration of citric acid is 2g / L, the concentration of sodium pyrophosphate is 6g / L, and the concentration of penetrant JFC is 2g / L. Adjust to 5-6, bleach the raccoon fur fiber in a solution with a bath ratio of 1:40, the bleaching temper...
Embodiment 2
[0028] A method for bleaching and decolorizing raccoon fur fibers, said process comprising:
[0029] (1) Degreasing: wash the raccoon fur fiber with a degreasing agent at 50°C for 30 minutes, rinse and dry;
[0030] (2) Pretreatment: Mix 10g / L ferrous sulfate heptahydrate with 2g / L sodium bisulfite, in a closed space at a temperature of 70°C, a pH value of 3.5, and a bath ratio of 1:40 Carry out pretreatment to the degreased raccoon hair fiber, and the treatment time is 40min;
[0031] (3) Cleaning: preparation concentration is the sodium bisulfite solution of 2g / L, utilizes the sodium bisulfite solution of 2g / L to clean the pretreated raccoon hair fiber, and the cleaning time is 12min;
[0032] (4) bleaching: preparation hydrogen peroxide concentration is 205ml / L, citric acid concentration is 2g / L, sodium pyrophosphate concentration is 6g / L, complexing agent aminocarboxylate and penetrant JFC concentration are the bleaching solution of 2g / L, The pH value of the bleaching so...
Embodiment 3
[0037] A method for bleaching and decolorizing raccoon fur fibers, said process comprising:
[0038] (1) Degreasing: wash the raccoon fur fiber with a degreasing agent at 50°C for 30 minutes, rinse and dry;
[0039] (2) Pretreatment: Mix 12g / L ferrous sulfate heptahydrate with 2g / L sodium bisulfite, in a closed space at a temperature of 70°C, a pH of 3.5, and a bath ratio of 1:40 Carry out pretreatment to the degreased raccoon hair fiber, and the treatment time is 40min;
[0040] (3) Cleaning: prepare a sodium bisulfite solution with a concentration of 2g / L, and use the 2g / L sodium bisulfite solution to clean the pretreated raccoon hair fiber for 15 minutes;
[0041] (4) bleaching: the concentration of preparation hydrogen peroxide is 15ml / L, the concentration of citric acid is 2g / L, the concentration of sodium pyrophosphate is 6g / L, complexing agent alcohol amines and penetrating agent JFC concentration are the bleaching solution of 2g / L, will The pH value of the bleaching ...
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