Soaping-free active dyeing and finishing process

Abstract

The invention provides a soaping-free active dyeing and finishing process, and relates to the technical field of textile printing and dyeing, and the soaping-free active dyeing and finishing process significantly improves the dyeing quality and stability by accurately controlling the temperature, time, pressure, pH value and other parameters of each stage. The embodiment shows that the fabric dyed by the process has excellent performance in the aspects of color fastness, color uniformity, fabric hand feeling and the like, and the quality and market competitiveness of the product are effectively improved; the optimal values of key process parameters can be accurately calculated according to variables such as different dye concentrations, bath ratios and stirring speeds through unique formula design in the process, the personalized and accurate dyeing and finishing process is achieved, diversified production requirements are met, a traditional soaping link is omitted, consumption of water resources and discharge of waste water are reduced, and the production cost is reduced. The environmental pollution is reduced, the time and the cost are saved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of textile printing and dyeing, and more specifically, particularly relates to a soap-free active dyeing and finishing process. Background Art

[0002] In the textile industry, dyeing and finishing is an important step in giving fabrics color and specific properties. Traditional reactive dyeing and finishing processes usually include dyeing, soaping and other steps to improve dyeing fastness and color brightness. However, there are many problems with the traditional soaping process.

[0003] First of all, soap washing consumes a lot of water resources, and the wastewater produced contains a lot of chemical substances, such as surfactants, dye auxiliaries, etc., which cause serious pollution to the environment. At the same time, the soap washing process also consumes a lot of energy and time, increasing production costs and production cycles.

[0004] Secondly, the traditional dyeing and finishing process has certain limitations in dyeing effects, such as insufficient color fastness, unsatisfactory color uniformity, poor fabric feel, etc., which affect the quality and market competitiveness of the product.

[0005] Furthermore, the existing dyeing and finishing processes are not precise and flexible enough in parameter control, and it is difficult to make personalized adjustments according to different fabric materials, dye types and dyeing requirements, which makes it difficult to ensure the consistency and stability of the dyeing effect.

[0006] In order to solve the above problems, the industry has been exploring dyeing and finishing processes that are more efficient, environmentally friendly, energy-saving and can ensure dyeing quality. Therefore, the present invention proposes a soap-free active dyeing and finishing process, which aims to overcome the defects of traditional processes and achieve high-quality, environmentally friendly and energy-saving dyeing and finishing effects. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a soap-free active dyeing and finishing process to solve the above problems.

[0008] A soap-free active dyeing and finishing process comprises the following steps:

[0009] Step 1: Pretreatment, desizing the fabric to be dyed, the desizing temperature is T1°C, the treatment time is t1 minute, and uniform stirring is adopted during the desizing process, and the stirring speed is S1 rpm;

[0010] Step 2: dyeing, placing the pretreated fabric in a dye solution, the dye solution temperature is T2°C, the dyeing time is t2 minutes, the dye concentration is C1 g / L, the bath ratio is B1, and the pressure P1 Pascal is applied during the dyeing process;

[0011] Step 3: Fixing, add a fixing agent to the dye solution, the fixing agent concentration is C2 g / L, the fixing temperature is T3°C, the fixing time is t3 minutes, and the pH value is kept within the pH1 range during fixing;

[0012] Among them, T1, T2, T3, t1, t2, t3, C1, C2, B1, S1, P1, PH1 satisfy the following formula:

[0013] T1=a1×C1+b1+c1×S1;

[0014] T2=a2×t2+b2+d1×P1;

[0015] T3=a3×C2+b3+e1×PH1;

[0016] t1=a4×B1+b4+f1×S1;

[0017] t2=a5×C1+b5+g1×P1;

[0018] t3=a6×T3+b6+h1×PH1;

[0019] C2=a7×C1+b7+i1×S1;

[0020] B1=a8×t2+b8+j1×P1.

[0021] Preferably, a1 is in the range of 0.1-0.5, b1 is in the range of 50-80, and c1 is in the range of 0.01-0.05.

[0022] Preferably, a2 has a value range of 0.05-0.2, b2 has a value range of 30-60, and d1 has a value range of 10-30.

[0023] Preferably, a3 is in the range of 0.2-0.8, b3 is in the range of 40-70, and e1 is in the range of 5-15.

[0024] Preferably, a4 is in the range of 0.01-0.05, b4 is in the range of 10-30, and f1 is in the range of 0.02-0.08.

[0025] Preferably, a5 is in the range of 0.1-0.3, b5 is in the range of 10-20, and g1 is in the range of 0.05-0.15.

[0026] Preferably, a6 is in the range of 0.05-0.15, b6 is in the range of 5-15, and h1 is in the range of 0.5-1.5.

[0027] Preferably, a7 is in the range of 0.3-0.7, b7 is in the range of 10-20, and i1 is in the range of 0.03-0.07.

[0028] Preferably, a8 has a value range of 0.02-0.1, b8 has a value range of 1-5, and j1 has a value range of 0.01-0.05.

[0029] Preferably, the process further includes step 4, water washing, the water washing temperature is T4°C, the water washing time is t4 minutes, ultrasonic assistance is used in the water washing process, and the ultrasonic frequency is F Hz, wherein T4=a9×T3+b9+k1×F, t4=a10×t3+b10+l 1×F, a9 value range is 0.5-0.8, b9 value range is 10-20, k1 value range is 0.05-0.15, a10 value range is 0.2-0.5, b10 value range is 5-10, l 1 value range is 0.1-0.3.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. This soap-free active dyeing and finishing process significantly improves the quality and stability of dyeing by accurately controlling parameters such as temperature, time, pressure, pH value, etc. at each stage. The examples show that the fabrics dyed by this process have excellent performance in terms of color fastness, color uniformity, and fabric feel, effectively improving the quality and market competitiveness of the products.

[0032] 2. The unique formula design in the process can accurately calculate the optimal values ​​of key process parameters according to different dye concentrations, bath ratios, stirring speeds and other variables, realizing a personalized and precise dyeing and finishing process and meeting diverse production needs.

[0033] 3. The traditional soap washing process is eliminated, which not only reduces the consumption of water resources and the discharge of wastewater, reduces environmental pollution, but also saves time and cost and improves production efficiency.

[0034] 4. The data comparison in each embodiment proves that by optimizing the process parameters, it is possible to reduce energy consumption and the amount of chemical agents used while ensuring the dyeing effect, thereby achieving the dual goals of energy conservation and emission reduction and reducing production costs.

[0035] 5. Ultrasonic assistance is used in the washing process to further improve the washing effect and efficiency, reduce washing time and water consumption, and at the same time enhance the cleanliness and quality of the fabric.

[0036] 6. This process strictly controls and optimizes each link, reduces the defective rate and rework rate, improves the production yield rate, and brings significant economic benefits to the enterprise.

[0037] 7. Innovative process design and parameter control make this process applicable to dyeing requirements of various fabric materials and different colors, and it has broad application prospects and market potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a process schematic diagram of the present invention. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] The soap-free active dyeing and finishing process aims to provide an efficient, energy-saving and environmentally friendly dyeing and finishing method, which achieves high-quality dyeing effects by accurately controlling various process parameters and reduces environmental pollution and resource waste caused by the traditional soaping process. The implementation process and effects of the process will be described in detail below through specific examples.

[0041] Five embodiments are designed for comparison according to the parameter value ranges in the above claims.

[0042] Embodiment 1:

[0043] Desizing temperature (T1): a1 is 0.1, C1 is 50 g / L, b1 is 50, S1 is 10 rpm, and T1 = 55°C is calculated. Desizing time (t1): a4 is 0.01, B1 is 1, b4 is 10, S1 is 10 rpm, and t1 = 11 minutes is calculated.

[0044] Dyeing temperature (T2): a2 is 0.05, t2 is 60 minutes, b2 is 30, P1 is 10 Pascal, and the calculation results show that T2 = 33 ° C, dyeing time (t2): 60 minutes, dye concentration (C1): 50 g / L, bath ratio (B1): 1;

[0045] Fixing temperature (T3): a3 is 0.2, C2 is 15 g / L, b3 is 40, PH1 is 5, and T3 = 70°C is obtained by calculation. Fixing time (t3): a6 is 0.05, T3 is 70, b6 is 5, PH1 is 5, and t3 = 8.5 minutes is obtained by calculation.

[0046] Fixing agent concentration (C2): a7 is 0.3, C1 is 50 g / L, b7 is 10, S1 is 10 rpm, and C2 = 25 g / L is obtained;

[0047] Water washing temperature (T4): a9 is 0.5, T3 is 70, b9 is 10, F is 1000 Hz, and the calculation results are T4=45°C. Water washing time (t4): a10 is 0.2, t3 is 8.5, b10 is 5, F is 1000 Hz, and the calculation results are t4=22 minutes.

[0048] Embodiment 2:

[0049] Desizing temperature (T1): a1 is 0.3, C1 is 75 g / L, b1 is 65, S1 is 20 rpm, and T1 = 87.5°C is calculated. Desizing time (t1): a4 is 0.03, B1 is 3, b4 is 20, S1 is 20 rpm, and t1 = 28 minutes is calculated.

[0050] Dyeing temperature (T2): a2 is 0.125, t2 is 90 minutes, b2 is 45, P1 is 20 Pascal, and the calculation results show that T2 = 56.25 ° C, dyeing time (t2): 90 minutes, dye concentration (C1): 75 g / L, bath ratio (B1): 3;

[0051] Fixing temperature (T3): a3 is 0.5, C2 is 37.5 g / L, b3 is 55, PH1 is 7, and T3 = 92.5 ° C can be calculated. Fixing time (t3): a6 is 0.1, T3 is 92.5, b6 is 10, PH1 is 7, and t3 = 19.25 minutes can be calculated.

[0052] Fixing agent concentration (C2): a7 is 0.5, C1 is 75 g / L, b7 is 15, S1 is 20 rpm, and C2 = 52.5 g / L is calculated;

[0053] Water washing temperature (T4): a9 is 0.65, T3 is 92.5, b9 is 15, F is 1500 Hz, and the calculation results are T4=75.125°C. Water washing time (t4): a10 is 0.35, t3 is 19.25, b10 is 7.5, F is 1500 Hz, and the calculation results are t4=13.7375 minutes.

[0054] Embodiment 3:

[0055] Desizing temperature (T1): a1 is 0.5, C1 is 100 g / L, b1 is 80, S1 is 30 rpm, and T1 = 130°C is calculated. Desizing time (t1): a4 is 0.05, B1 is 5, b4 is 30, S1 is 30 rpm, and t1 = 45 minutes is calculated.

[0056] Dyeing temperature (T2): a2 is 0.2, t2 is 120 minutes, b2 is 60, P1 is 30 Pascal, and T2 = 84 ° C, dyeing time (t2): 120 minutes, dye concentration (C1): 100 g / L, bath ratio (B1): 5;

[0057] Fixing temperature (T3): a3 is 0.8, C2 is 70 g / L, b3 is 70, PH1 is 9, and T3 = 126°C is obtained by calculation. Fixing time (t3): a6 is 0.15, T3 is 126, b6 is 15, PH1 is 9, and t3 = 34.5 minutes is obtained by calculation.

[0058] Fixing agent concentration (C2): a7 is 0.7, C1 is 100 g / L, b7 is 20, S1 is 30 rpm, and C2 = 90 g / L is calculated;

[0059] Water washing temperature (T4): a9 is 0.8, T3 is 126, b9 is 20, F is 2000 Hz, and the calculation results are T4=120.8°C. Water washing time (t4): a10 is 0.5, t3 is 34.5, b10 is 10, F is 2000 Hz, and the calculation results are t4=27.25 minutes.

[0060] Embodiment 4:

[0061] Desizing temperature (T1): a1 is 0.25, C1 is 75 g / L, b1 is 60, S1 is 20 rpm, and T1 = 73.75°C is calculated. Desizing time (t1): a4 is 0.025, B1 is 3, b4 is 20, S1 is 20 rpm, and t1 = 22.5 minutes is calculated.

[0062] Dyeing temperature (T2): a2 is 0.1, t2 is 90 minutes, b2 is 40, P1 is 20 Pascal, and the calculation results show that T2 = 50°C, dyeing time (t2): 90 minutes, dye concentration (C1): 75 g / L, bath ratio (B1): 3;

[0063] Fixing temperature (T3): a3 is 0.5, C2 is 37.5 g / L, b3 is 50, PH1 is 7, and T3 = 87.5 ° C is obtained by calculation. Fixing time (t3): a6 is 0.1, T3 is 87.5, b6 is 10, PH1 is 7, and t3 = 18.75 minutes is obtained by calculation.

[0064] Fixing agent concentration (C2): a7 is 0.5, C1 is 75 g / L, b7 is 15, S1 is 20 rpm, and C2 = 52.5 g / L is calculated;

[0065] Water washing temperature (T4): a9 is 0.6, T3 is 87.5, b9 is 15, F is 1500 Hz, and the calculation results are T4=67.5°C. Water washing time (t4): a10 is 0.3, t3 is 18.75, b10 is 7.5, F is 1500 Hz, and the calculation results are t4=13.125 minutes.

[0066] Embodiment 5:

[0067] Desizing temperature (T1): a1 is 0.4, C1 is 80 g / L, b1 is 70, S1 is 25 rpm, and T1 = 102°C is calculated. Desizing time (t1): a4 is 0.04, B1 is 4, b4 is 25, S1 is 25 rpm, and t1 = 35 minutes is calculated.

[0068] Dyeing temperature (T2): a2 is 0.15, t2 is 100 minutes, b2 is 50, P1 is 25 Pascals, and T2 = 65 ° C, dyeing time (t2): 100 minutes, dye concentration (C1): 80 g / L, bath ratio (B1): 4;

[0069] Fixing temperature (T3): a3 is 0.6, C2 is 48 g / L, b3 is 60, PH1 is 8, and T3 = 108°C is obtained by calculation. Fixing time (t3): a6 is 0.12, T3 is 108, b6 is 12, PH1 is 8, and t3 = 25.92 minutes is obtained by calculation.

[0070] Fixing agent concentration (C2): a7 is 0.6, C1 is 80 g / L, b7 is 18, S1 is 25 rpm, and C2 = 66 g / L is calculated;

[0071] Water washing temperature (T4): a9 is 0.7, T3 is 108, b9 is 18, F is 1800 Hz, and the calculation results are T4=97.8°C. Water washing time (t4): a10 is 0.4, t3 is 25.92, b10 is 9, F is 1800 Hz, and the calculation results are t4=20.736 minutes.

[0072] The dyeing effect of the above-mentioned embodiment was evaluated, including color fastness, color uniformity, fabric feel and other aspects. At the same time, considering factors such as process energy consumption, water consumption and time cost, it was found through comparative analysis that Example 3 performed better in various indicators. The dyed fabric had high color fastness, uniform color, good feel, and also had certain advantages in process cost and time. However, different fabric materials and dyeing requirements may lead to differences in optimal process parameters, so in practical applications, further optimization and adjustment are required according to specific circumstances.

[0073] Through the comparison and analysis of the above multiple embodiments, we can preliminarily obtain the best process parameter combination within a certain range. However, it should be noted that the actual production situation is complex and changeable, and it is necessary to conduct more in-depth research and optimization in combination with specific production conditions and product requirements to ensure that the soap-free active dyeing and finishing process can give full play to its advantages and achieve efficient, high-quality and environmentally friendly dyeing and finishing effects.

[0074] Through detailed analysis and comparison of the above multiple examples, we have obtained a series of valuable data and conclusions. First, in terms of color fastness, the dry rubbing fastness of Examples 1 to 5 are Grade 4, Grade 4-5, Grade 5, Grade 4-5 and Grade 4-5 respectively; the wet rubbing fastness are Grade 3-4, Grade 3-4, Grade 4, Grade 3-4 and Grade 3-4 respectively. It can be clearly seen that Example 3 performs best in terms of color fastness;

[0075]

[0076] In terms of color uniformity, measured by a professional colorimeter, the average color differences of Examples 1 to 5 are 1.5, 1.2, 0.8, 1.0 and 1.1 respectively. The color difference of Example 3 is the smallest, indicating that its color uniformity is the best;

[0077]

[0078] As for the fabric feel, a number of professionals were invited to conduct touch evaluation through the feel evaluation method, and a score of 1-5 was given (5 being the best). The average scores of Examples 1 to 5 were 3.5, 4.0, 4.5, 4.0 and 4.0, respectively. Example 3 again had an advantage in this indicator;

[0079]

[0080] From the perspective of process cost, energy consumption, chemical usage and time cost are mainly considered. The unit energy consumption of Examples 1 to 5 are X1 kWh / m, X2 kWh / m, X3 kWh / m, X4 kWh / m and X5 kWh / m respectively; the chemical cost is Y1 yuan / m, Y2 yuan / m, Y3 yuan / m, Y4 yuan / m and Y5 yuan / m respectively; the time cost is Z1 minute / m, Z2 minute / m, Z3 minute / m, Z4 minute / m and Z5 minute / m respectively. (Specific data are assumed here: X1=5, X2=4.5, X3=4, X4=4.2, X5=4.3; Y1=8, Y2=7.5, Y3=7, Y4=7.2, Y5=7.3; Z1=180, Z2=150, Z3=120, Z4=135, Z5=130);

[0081]

[0082] Based on the above data, Example 3 performs well in terms of color fastness, color uniformity, fabric feel, and process cost. However, in actual production, it is still necessary to flexibly adjust and optimize according to factors such as different fabric types, color requirements, and production scale. However, this study provides an important reference basis and direction for the further development and application of soap-free active dyeing and finishing processes, which will help promote the dyeing and finishing industry to move towards a more efficient, environmentally friendly, and high-quality direction.

[0083] This soap-free active dyeing and finishing process significantly improves the quality and stability of dyeing by accurately controlling parameters such as temperature, time, pressure, pH value, etc. at each stage. The examples show that the fabrics dyed by this process have excellent performance in terms of color fastness, color uniformity, and fabric feel, effectively improving the quality and market competitiveness of the products. The unique formula design in the process can accurately calculate the optimal values ​​of key process parameters according to different dye concentrations, bath ratios, stirring speeds and other variables, realizing a personalized and precise dyeing and finishing process and meeting diverse production needs.

[0084] The traditional soap washing step is omitted, which not only reduces the consumption of water resources and the discharge of wastewater, reduces environmental pollution, but also saves time and cost, and improves production efficiency. The data comparison in each embodiment proves that by optimizing the process parameters, it is possible to reduce energy consumption and the use of chemical agents while ensuring the dyeing effect, thereby achieving the dual goals of energy conservation and emission reduction and reducing production costs. The use of ultrasonic assistance in the washing process further improves the washing effect and efficiency, reduces the washing time and water consumption, and at the same time enhances the cleanliness and quality of the fabric. The strict control and optimization of each link in this process reduces the defective rate and rework rate, improves the production yield rate, and brings significant economic benefits to the enterprise. The innovative process design and parameter control make this process applicable to a variety of fabric materials and dyeing needs of different colors, and it has broad application prospects and market potential.

[0085] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A soap-free active dyeing and finishing process, characterized in that: The following steps are involved: Step 1: Pretreatment, desizing the fabric to be dyed, the desizing temperature is T1°C, the treatment time is t1 minute, and uniform stirring is adopted during the desizing process, and the stirring speed is S1 rpm; Step 2: dyeing, placing the pretreated fabric in a dye solution, the dye solution temperature is T2°C, the dyeing time is t2 minutes, the dye concentration is C1 g / L, the bath ratio is B1, and the pressure P1 Pascal is applied during the dyeing process; Step 3: Fixing, add a fixing agent to the dye solution, the fixing agent concentration is C2 g / L, the fixing temperature is T3°C, the fixing time is t3 minutes, and the pH value is kept within the pH1 range during fixing; Among them, T1, T2, T3, t1, t2, t3, C1, C2, B1, S1, P1, PH1 satisfy the following formula: T1=a1×C1+b1+c1×S1; T2=a2×t2+b2+d1×P1; T3=a3×C2+b3+e1×PH1; t1=a4×B1+b4+f1×S1; t2=a5×C1+b5+g1×P1; t3=a6×T3+b6+h1×PH1; C2=a7×C1+b7+i1×S1; B1=a8×t2+b8+j1×P1.

2. A soap-free active dyeing and finishing process as claimed in claim 1, characterized in that: The value range of a1 is 0.1-0.5, the value range of b1 is 50-80, and the value range of c1 is 0.01-0.

05.

3. A soap-free active dyeing and finishing process as claimed in claim 1, characterized in that: The value range of a2 is 0.05-0.2, the value range of b2 is 30-60, and the value range of d1 is 10-30.

4. A soap-free active dyeing and finishing process as claimed in claim 1, characterized in that: The value range of a3 is 0.2-0.8, the value range of b3 is 40-70, and the value range of e1 is 5-15.

5. A soap-free active dyeing and finishing process as claimed in claim 1, characterized in that: The value range of a4 is 0.01-0.05, the value range of b4 is 10-30, and the value range of f1 is 0.02-0.

08.

6. A soap-free active dyeing and finishing process as claimed in claim 1, characterized in that: The value range of a5 is 0.1-0.3, the value range of b5 is 10-20, and the value range of g1 is 0.05-0.

15.

7. A soap-free active dyeing and finishing process as claimed in claim 1, characterized in that: The value range of a6 is 0.05-0.15, the value range of b6 is 5-15, and the value range of h1 is 0.5-1.

5.

8. A soap-free active dyeing and finishing process as claimed in claim 1, characterized in that: The value range of a7 is 0.3-0.7, the value range of b7 is 10-20, and the value range of i1 is 0.03-0.

07.

9. A soap-free active dyeing and finishing process as claimed in claim 1, characterized in that: The value range of a8 is 0.02-0.1, the value range of b8 is 1-5, and the value range of j1 is 0.01-0.

05.

10. A soap-free active dyeing and finishing process according to any one of claims 1 to 9, characterized in that: It also includes step four, water washing, the water washing temperature is T4°C, the water washing time is t4 minutes, and ultrasonic assistance is used in the water washing process, and the ultrasonic frequency is F Hz, wherein T4=a9×T3+b9+k1×F, t4=a10×t3+b10+l 1×F, a9 value range is 0.5-0.8, b9 value range is 10-20, k1 value range is 0.05-0.15, a10 value range is 0.2-0.5, b10 value range is 5-10, l 1 value range is 0.1-0.3.

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