CN107558054B - Knitted fabric and dyeing method thereof - Google Patents
Knitted fabric and dyeing method thereof Download PDFInfo
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- CN107558054B CN107558054B CN201710764858.9A CN201710764858A CN107558054B CN 107558054 B CN107558054 B CN 107558054B CN 201710764858 A CN201710764858 A CN 201710764858A CN 107558054 B CN107558054 B CN 107558054B
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Abstract
The invention relates to knitted fabrics and a dyeing method thereof, wherein the dyeing method comprises a dyeing pretreatment step, a dyeing step and a dyeing post-treatment step, the dyeing pretreatment step comprises a heating bleaching step, a cooling neutralization step and a water washing step, the technological parameters of the heating bleaching step comprise that the knitted fabrics are placed in water of 40-60 ℃, the operation is carried out for 5-15 min, then the temperature is increased to 90-100 ℃ at the speed of 1-3 ℃/min, the operation is carried out for 40-50 min, the pump speed is 80-100% of the rated pump speed, the technological parameters of the cooling neutralization step are that the knitted fabrics subjected to the heating bleaching treatment are cooled to 40-60 ℃ at the speed of 1-3 ℃/min, the pump speed is 80-100% of the rated pump speed, and in the dyeing step, the pump speed is 80-100% of the rated pump speed, and the proportion of crease marks of the knitted fabrics is reduced by 60% through the mutual matching of the slow heating gradient and the speed increasing pump.
Description
Technical Field
The invention relates to the field of textiles, in particular to knitted fabrics and a dyeing method thereof.
Background
Meanwhile, if the fabric is a blended fabric, because different textiles have different shrinkage rates at the same temperature, and during high-temperature dyeing, the circulation is not smooth and the dispersion is not uniform, so that broken glass crinkling dyeing marks, namely chicken claw marks, appear, chicken claw marks exist on the surface of the fabric, the appearance quality of the fabric is difficult to meet the requirements of customers, and the fabric can only be subjected to quality reduction or scrapping treatment.
Therefore, it is necessary to develop dyeing methods capable of solving the crease defect of the knitted fabric.
Disclosure of Invention
Based on this, the present invention provides methods for effectively reducing dyed creases in knitted fabrics.
dyeing method of knitted fabric, including dyeing the pretreatment step, dyeing step and dyeing the posttreatment step;
the dyeing pretreatment step comprises a heating bleaching step, a cooling neutralization step and a water washing step;
the process parameters of the temperature-rising bleaching step are as follows: putting the knitted fabric into water at the temperature of 40-60 ℃, running for 5-15 min, then heating to 90-100 ℃ at the speed of 1-3 ℃/min, and running for 40-50 min; the pump speed is 80-100% of the rated pump speed;
the process parameters of the cooling neutralization step are as follows: cooling the knitted fabric subjected to the temperature rise bleaching treatment to 40-60 ℃ at a speed of 1-3 ℃/min; the pump speed is 80-100% of the rated pump speed;
the dyeing step comprises the following process parameters: the pump speed is 80-100% of the rated pump speed.
In examples, the process parameters of the temperature-rising bleaching step are that the pump speed is 85 percent of the rated pump speed;
the process parameters of the cooling neutralization step are as follows: the pump speed was 85% of the rated pump speed.
The process parameters of the dyeing step are that the pump speed is 85 percent of the rated pump speed, and the fabric in the dye vat is in an easily unfolded state by using a larger pump number in the dyeing pretreatment and dyeing process, so that the dyeing is uniform.
In of these embodiments, the nominal pump speed was 1500 r/min.
In examples, the temperature-raising and bleaching step comprises the steps of putting the knitted fabric into water at 50 +/-2 ℃, running for 10 +/-2 min, raising the temperature to 98 +/-2 ℃ at the speed of 3 ℃/min, running for 45 +/-2 min, and adopting a small temperature-raising and temperature-lowering gradient in the pre-dyeing treatment to prevent the cloth cover temperature from changing too fast, and controlling the shrinkage of the knitted fabric with different components to be kept at .
In examples, the bath ratio of the pre-dyeing treatment is 5 to 10.
In embodiments, the running speed is 2-3 min/circle, and the cloth speed is 250-300 m/min.
In embodiments, the knitted fabric is made of cotton or blended fabric.
Another objects of the present invention are to provide kinds of knitted fabrics prepared by the above method for dyeing knitted fabrics.
The invention has the following beneficial effects:
the dyeing method of the knitted fabric can effectively reduce the proportion of dyeing creases of the knitted fabric in production by optimizing the dyeing pretreatment step, particularly controlling the heating rate and the cooling rate (preferably controlling the heating rate and the cooling rate at a rate of 1-3 ℃/min) in the heating bleaching step and the cooling neutralization step, enables the fabrics with different components to shrink by controlling the heating rate and reduces the creases generated by the shrinkage of the fabrics with different structures as far as possible, meanwhile, in the dyeing pretreatment step and the dyeing step, the fabric is produced by using 80-100% of the rated pump speed, so that the fabric can be smoothly unfolded in a dye vat, and steps reduce the creases formed in the dyeing process.
Detailed Description
The present invention is further illustrated in detail below with reference to specific examples.
Example 1
dyeing method for knitted fabric, comprising dyeing pretreatment step, dyeing step and dyeing post-treatment step;
(1) the dyeing pretreatment step comprises a heating bleaching step, a cooling neutralization step and a water washing step;
specifically, in the dyeing pretreatment step, a knitted fabric (made of cotton blended fabric) is placed into a main cylinder of a dye vat, mixed water is fed into the main cylinder from a cold and hot water pipeline connected with the main cylinder of the dye vat according to a bath ratio of 6 (namely 6kg of water is added into every 1kg of fabric), 50 ℃ water can be directly fed in, or after water is fed in, the temperature of the water is raised to 50 ℃ at a heating rate of 3 ℃/min, the fabric is operated for 10min in the 50 ℃ water, the operation speed is 2-3 min/circle, the temperature is raised to 98 ℃ at 3 ℃/min, the operation speed is 45min, the operation speed is 2-3 min/circle, then the temperature is lowered to 50 ℃ at 3 ℃/min, and water is drained; and then water is fed into the main cylinder according to the bath ratio of 6, water with the temperature of 50 ℃ can be directly fed in, or the water is heated to 50 ℃ at the heating rate of 3 ℃/min after water is fed in, then acetic acid is added into the main cylinder of the dye vat from the auxiliary cylinder of the dye vat, the operation speed is 2-3 min/circle, then enzyme is added into the main cylinder of the dye vat from the auxiliary cylinder of the dye vat, the operation speed is 2-3 min/circle, water is drained, and in the dyeing pretreatment step, the pump speed of the dyeing machine is 85% of the rated pump speed. The cloth speed is 250-300 m/min;
(2) and (3) dyeing: dyeing the knitted fabric subjected to dyeing pretreatment. In the dyeing step, the dyeing machine pump speed is produced at 85% of the rated pump speed.
(3) And (3) dyeing post-treatment step: and carrying out post-treatment on the dyed knitted fabric to obtain the dyed knitted fabric A.
Example 2
dyeing method for knitted fabric, comprising dyeing pretreatment step, dyeing step and dyeing post-treatment step;
(1) the dyeing pretreatment step comprises a heating bleaching step, a cooling neutralization step and a water washing step;
specifically, in the dyeing pretreatment step, a knitted fabric (made of cotton blended fabric) is placed into a main cylinder of a dye vat, mixed water is fed into the main cylinder from a cold and hot water pipeline connected with the main cylinder of the dye vat according to a bath ratio of 6 (namely 6kg of water is added into every 1kg of fabric), 50 ℃ water can be directly fed in, or after water is fed in, the temperature of the water is raised to 50 ℃ at a temperature raising rate of 5 ℃/min, the fabric is operated for 10min in the 50 ℃ water, the operation speed is 2-3 min/circle, the temperature is raised to 98 ℃ at 3 ℃/min, the operation speed is 45min, the operation speed is 2-3 min/circle, then the temperature is lowered to 50 ℃ at 3 ℃/min, and water is drained; and then water is fed into the main cylinder according to the bath ratio of 6, water with the temperature of 50 ℃ can be directly fed in, or the water is heated to 50 ℃ at the heating rate of 5 ℃/min after water is fed in, then acetic acid is added into the main cylinder of the dye vat from the auxiliary cylinder of the dye vat and the operation speed is 2-3 min/circle, then enzyme is added into the main cylinder of the dye vat from the auxiliary cylinder of the dye vat and the operation speed is 2-3 min/circle, water is drained, and in the dyeing pretreatment step, the pump speed of the dyeing machine is produced according to 80% of the rated pump speed.
(2) And (3) dyeing: dyeing the knitted fabric subjected to dyeing pretreatment. In the dyeing step, the dyeing machine pump speed is produced according to 80% of the rated pump speed.
(3) And (3) dyeing post-treatment step: and (3) carrying out post-treatment on the dyed knitted fabric to obtain a dyed knitted fabric B.
Example 3
dyeing method for knitted fabric, comprising dyeing pretreatment step, dyeing step and dyeing post-treatment step;
(1) the dyeing pretreatment step comprises a heating bleaching step, a cooling neutralization step and a water washing step;
specifically, in the dyeing pretreatment step, a knitted fabric (made of cotton blended fabric) is placed into a main cylinder of a dye vat, mixed water is fed into the main cylinder from a cold and hot water pipeline connected with the main cylinder of the dye vat according to a bath ratio of 6 (namely 6kg of water is added into every 1kg of fabric), 50 ℃ water can be directly fed in, or after water is fed in, the temperature of the water is raised to 50 ℃ at a temperature raising rate of 5 ℃/min, the fabric is operated for 10min in the 50 ℃ water, the operation speed is 2-3 min/circle, the temperature is raised to 98 ℃ at 3 ℃/min, the operation speed is 45min, the operation speed is 2-3 min/circle, then the temperature is lowered to 50 ℃ at 3 ℃/min, and water is drained; and then water is fed into the main cylinder according to the bath ratio of 6, water with the temperature of 50 ℃ can be directly fed in, or the water is heated to 50 ℃ at the heating rate of 5 ℃/min after water is fed in, then acetic acid is added into the main cylinder of the dye vat from the auxiliary cylinder of the dye vat and the operation speed is 2-3 min/circle, then enzyme is added into the main cylinder of the dye vat from the auxiliary cylinder of the dye vat and the operation speed is 2-3 min/circle, water is drained, and in the dyeing pretreatment step, the pump speed of the dyeing machine is produced according to 100% of the rated pump speed.
(2) And (3) dyeing: dyeing the knitted fabric subjected to dyeing pretreatment. In the dyeing step, the dyeing machine pump speed is produced at 100% of the rated pump speed.
(3) And (3) dyeing post-treatment step: and (4) carrying out post-treatment on the dyed knitted fabric to obtain a dyed knitted fabric C.
Example 4
dyeing method for knitted fabric, comprising dyeing pretreatment step, dyeing step and dyeing post-treatment step;
(1) the dyeing pretreatment step comprises a heating bleaching step, a cooling neutralization step and a water washing step;
specifically, in the dyeing pretreatment step, a knitted fabric (made of cotton blended fabric) is placed into a main cylinder of a dye vat, mixed water is fed into the main cylinder from a cold and hot water pipeline connected with the main cylinder of the dye vat according to a bath ratio of 6 (namely 6kg of water is added into every 1kg of fabric), 50 ℃ water can be directly fed in, or after water is fed in, the temperature of the water is raised to 50 ℃ at a temperature raising rate of 5 ℃/min, the fabric is operated for 10min in the 50 ℃ water, the operation speed is 2-3 min/circle, the temperature is raised to 98 ℃ at a speed of 1 ℃/min, the operation speed is 45min, the operation speed is 2-3 min/circle, then the temperature is lowered to 50 ℃ at a speed of 1 ℃/min, and water is drained; and then water is fed into the main cylinder according to the bath ratio of 6, water with the temperature of 50 ℃ can be directly fed in, or the water is heated to 50 ℃ at the heating rate of 5 ℃/min after water is fed in, then acetic acid is added into the main cylinder of the dye vat from the auxiliary cylinder of the dye vat and the operation speed is 2-3 min/circle, then enzyme is added into the main cylinder of the dye vat from the auxiliary cylinder of the dye vat and the operation speed is 2-3 min/circle, water is drained, and in the dyeing pretreatment step, the pump speed of the dyeing machine is 85% of the rated pump speed.
(2) And (3) dyeing: dyeing the knitted fabric subjected to dyeing pretreatment. In the dyeing step, the dyeing machine pump speed is produced at 85% of the rated pump speed.
(3) And (3) dyeing post-treatment step: and (4) carrying out post-treatment on the dyed knitted fabric to obtain a dyed knitted fabric D.
Comparative example 1
knitting cloth dyeing methods, basically the same as example 1, except that in the dyeing pretreatment step and the dyeing step, the pump speed of the dyeing machine is 60% of the rated pump speed to obtain dyed knitting cloth E.
Comparative example 2
knitted fabric dyeing methods, basically the same as the embodiment 1, the difference is that in the dyeing pretreatment step, knitted fabric (material is cotton blended fabric) is placed in a main cylinder of a dye vat, mixed water is fed into the main cylinder from a cold and hot water pipeline connected with the main cylinder of the dye vat according to a bath ratio of 6 (namely 6kg of water is added to every 1kg of fabric), 30 ℃ water can be directly fed, or after water is fed, the water is heated to 50 ℃ at a heating rate of 5 ℃/min, the stacked cotton and blended fabric are operated in 50 ℃ water for 10min at an operation speed of 2-3 min/ring, the temperature is directly heated to 98 ℃, or after water is fed, the water is heated to 98 ℃ at a heating rate of 5 ℃/min, the water is operated for 45min, the operation speed is 2-3 min/ring, then the temperature is directly cooled to 50 ℃, water is drained, water is fed into the main cylinder according to the bath ratio of 6, the 50 ℃ water can be directly fed, or after water is fed, the water is heated to 50 ℃ at a heating rate of 5 ℃/min, the temperature is directly cooled to 50 ℃ and the temperature is pumped into the main cylinder, the dyeing tank, the operation speed of the dyeing tank is adjusted from the dyeing tank, the dyeing water is operated from the dyeing tank, the dyeing process of 5 ℃/ring is performed, the dyeing speed of the dyeing tank, the dyeing tank is performed, the dyeing tank, the dyeing process of the secondary tank, the secondary tank is performed, the dyeing tank.
Comparative example 3
knitted fabric dyeing methods are basically the same as the embodiment 1, and the difference is that in the dyeing pretreatment step, the temperature is directly raised to 98 ℃, the operation is carried out for 45min, and then the temperature is directly lowered to 50 ℃ to obtain the dyed knitted fabric G.
The results of comparing the dyeing effects of the knitted fabrics a to G obtained above are shown in table 1.
TABLE 1 dyeing of knits A-G
| Knitted fabric | Dyeing crease condition | Dyeing effect |
| A | 2％ | Dyeing uniformly and no obvious crease |
| B | 2.5％ | Dyeing uniformly and foldingIs not obvious |
| C | 2％ | Dyeing uniformly and no obvious crease |
| D | 2％ | Dyeing uniformly and no obvious crease |
| E | 5％ | 10% dyeing pattern with obvious crease |
| F | 4％ | 5% dyeing pattern, obvious crease |
| G | 6％ | 20% dyeing pattern with obvious crease |
Wherein the crease ratio is calculated as the percentage of the area of the crease in a 10m by 10m cloth in total area.
From the above results, the knitted fabrics obtained in examples 1 to 4 had small crease area, no obvious crease, uniform dyeing, and good dyeing effect. The knitted fabrics obtained in comparative examples 1 to 3 had significantly large crease areas and appeared stained. Particularly, in the knitted fabric obtained in comparative example 3, the crease was conspicuous. It can be known that when the temperature rise and fall speed is 1-3 ℃/min and the pump speed is increased to 80% -100% of the rated pump speed, the crease is reduced and the dyeing effect is good; the pump speed is too low, the temperature rising and falling speed is increased, the crease proportion is increased, and the dyeing is easy. Considering the influence of production efficiency, the industrial production is carried out by selecting the process conditions that the pump speed is 85 percent of the rated pump speed and the heating speed is 3 ℃/min.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
- The dyeing method of knitted fabrics is characterized by comprising the steps of pre-dyeing treatment, dyeing and post-dyeing treatment;the dyeing pretreatment step comprises a heating bleaching step, a cooling neutralization step and a water washing step;the process parameters of the temperature-rising bleaching step are as follows: putting the knitted fabric into water at the temperature of 40-60 ℃, running for 5-15 min, then heating to 90-100 ℃ at the speed of 1-3 ℃/min, and running for 40-50 min; the pump speed is 80-100% of the rated pump speed;the process parameters of the cooling neutralization step are as follows: cooling the knitted fabric subjected to the temperature rise bleaching treatment to 40-60 ℃ at a speed of 1-3 ℃/min; the pump speed is 80-100% of the rated pump speed;the dyeing step comprises the following process parameters: the pump speed is 80-100% of the rated pump speed;the rated pump speed is 1500 r/min.
- 2. The method for dyeing a knitted fabric according to claim 1, wherein the process parameters of the temperature-raising bleaching step are as follows: the pump speed is 85% of the rated pump speed;the process parameters of the cooling neutralization step are as follows: the pump speed is 85% of the rated pump speed;the dyeing step comprises the following process parameters: the pump speed was 85% of the rated pump speed.
- 3. The method for dyeing a knitted fabric according to claim 1, wherein the process parameters of the temperature-raising bleaching step are as follows: and (3) putting the knitted fabric into water at the temperature of 50 +/-2 ℃, running for 10 +/-2 min, then heating to 98 +/-2 ℃ at the speed of 3 ℃/min, and running for 45 +/-2 min.
- 4. The method of dyeing a knitted fabric according to any one of claims 1 to 3, wherein the bath ratio in the pre-dyeing treatment step is 5 to 10.
- 5. A method of dyeing a knitted fabric according to any one of claims 1 to 3 and wherein the speed of operation is 2 to 3 min/turn.
- 6. The method of dyeing knitted fabric according to any one of claims 1 to 3 and , wherein the knitted fabric is made of cotton or blended fabric.
- 7. A knit fabric produced by the method of dyeing a knit fabric according to any one of claims 1 to 6 and .
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|---|---|---|---|---|
| CN1635213A (en) * | 2004-12-02 | 2005-07-06 | 浙江华孚色纺有限公司 | Soybean fiber loose-stock dyeing and processing method |
| CN102517872A (en) * | 2011-12-09 | 2012-06-27 | 杭州澳美印染有限公司 | Oxygen bleaching-alkali decrement-bleaching one-bath treatment method for T/C and CVC fabrics |
| CN104404798A (en) * | 2014-12-01 | 2015-03-11 | 江苏瓯堡纺织染整有限公司 | Dacron and wool blended dyeing and finishing technology |
| CN105088823A (en) * | 2015-09-24 | 2015-11-25 | 南通大学 | Scouring, dyeing and bathing short technological process of cotton knitted fabric |
| CN105525518A (en) * | 2016-01-19 | 2016-04-27 | 三明市东泰染织有限公司 | Dyeing method of automobile interior decoration textiles |
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2017
- 2017-08-30 CN CN201710764858.9A patent/CN107558054B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635213A (en) * | 2004-12-02 | 2005-07-06 | 浙江华孚色纺有限公司 | Soybean fiber loose-stock dyeing and processing method |
| CN102517872A (en) * | 2011-12-09 | 2012-06-27 | 杭州澳美印染有限公司 | Oxygen bleaching-alkali decrement-bleaching one-bath treatment method for T/C and CVC fabrics |
| CN104404798A (en) * | 2014-12-01 | 2015-03-11 | 江苏瓯堡纺织染整有限公司 | Dacron and wool blended dyeing and finishing technology |
| CN105088823A (en) * | 2015-09-24 | 2015-11-25 | 南通大学 | Scouring, dyeing and bathing short technological process of cotton knitted fabric |
| CN105525518A (en) * | 2016-01-19 | 2016-04-27 | 三明市东泰染织有限公司 | Dyeing method of automobile interior decoration textiles |
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