One-bath two-stage dyeing method of acrylic/wool/cupro blended knitted fabric
A technology of cupro fiber and dyeing method, applied in the direction of dyeing method, fiber type, fiber treatment, etc., can solve the problems of difficult processing technology, poor dyeing quality, low dye utilization rate, etc., so as to improve the dyeing quality and reduce defects. Good quality, uniform and firm coloring effect
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Embodiment 1
[0020] Embodiment 1: as figure 1 Shown, 40 S Acrylic / wool / cupro (70 / 10 / 20) black knitted fabric dyeing method in one bath and two stages, the steps are as follows:
[0021] (1) Pretreatment: Put the acrylic / wool / cupro fiber blended knitted fabric into the dyeing vat, add cold water to the dyeing vat and control the bath ratio to 1:4.5; add degreasing agent and ice to the dyeing vat in sequence every 3 minutes Acetic acid (HAC), leveling agent, anti-sedimentation agent for one bath; add cationic dyes into the dyeing bath evenly and slowly (10-15min), after 5 minutes, add weak acid dyes evenly and slowly (10-15min), 10 Minutes later, raise the temperature to 75°C±2 at a speed of 1°C / min and keep it for 10-15min, then raise the temperature to 85°C±2 and keep it for 10-15min, then raise the temperature to 96-98°C, keep it for 60min, and finally heat it at 1°C Cool down at a speed of 1 / min, drain and wash water to prevent oil spots;
[0022] (2) Dyeing acrylic / wool / cupro fibers:...
Embodiment 2
[0027] Example 2: 60 S Acrylic / wool / cupro (35 / 30 / 35) beige knitted fabric dyeing method in one bath and two stages, the steps are as follows:
[0028](1) Pre-treatment: Put the acrylic / wool / cupro fiber blended knitted fabric into the dyeing vat, add cold water to the dyeing vat and control the bath ratio to 1:4; add degreasing agent and ice to the dyeing vat in sequence every 3 minutes Acetic acid (HAC), leveling agent, anti-sedimentation agent for one bath; add cationic dyes into the dyeing bath evenly and slowly (10-15min), after 5 minutes, add weak acid dyes evenly and slowly (10-15min), 10 Minutes later, raise the temperature to 75°C±2 at a speed of 1°C / min and keep it for 10-15min, then raise the temperature to 85°C±2 and keep it for 10-15min, then raise the temperature to 96-98°C, keep it for 60min, and finally heat it at 1°C Cool down at a speed of 1 / min, drain and wash water to prevent oil spots;
[0029] (2) Dyeing acrylic / wool / cupro fibers: Add cleaning agent, heat...
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