阅读说明：本技术 一种提升普梳棉纱质量的加工方法 (Processing method for improving quality of carded cotton yarns ) 是由 肖后成 于 2020-11-25 设计创作，主要内容包括：本发明涉及针织纱线技术领域,具体涉及一种提升普梳棉纱质量的加工方法,包括如下步骤：(S1)、取普梳棉纱织成布料后,在25-35m/min输送机速下、控制压辊直径在50-70mm进行磨毛处理；(S2)、经磨毛后,在70-75m/min的输送机速下、控制布面温度在145-155℃进行烧毛处理；(S3)、经烧毛后,在强碱溶液下碱处理4-12min,得到加工后的普梳棉纱布料。该提升普梳棉纱质量的加工方法,棉纤维无需经精梳纺,加工后的普梳棉纱布料质量跟精梳纱布料质量相当,提升了普梳棉纱的品质,实现普梳棉纱替代精梳纱生产,大大节省生产成本。(The invention relates to the technical field of knitting yarns, in particular to a processing method for improving the quality of carded cotton yarns, which comprises the following steps: (S1), the carded cotton yarns are woven into cloth, and then sanding treatment is carried out at the speed of a conveyor of 25-35m/min and the diameter of a press roll is controlled to be 50-70 mm; (S2), after being ground, the singeing treatment is carried out at the conveyor speed of 70-75m/min and the cloth surface temperature is controlled at 145-155 ℃; (S3), after singeing, carrying out alkali treatment for 4-12min in a strong alkali solution to obtain the processed carded cotton gauze material. According to the processing method for improving the quality of the carding cotton yarn, the cotton fiber does not need to be subjected to combing spinning, the quality of the processed carding cotton gauze material is equivalent to that of the combing cotton gauze material, the quality of the carding cotton yarn is improved, the production of the carding cotton yarn instead of the combing yarn is realized, and the production cost is greatly saved.)

1. A processing method for improving the quality of carded cotton yarns is characterized by comprising the following steps:

(S1), the carded cotton yarns are woven into cloth, and then sanding treatment is carried out at the speed of a conveyor of 25-35m/min and the diameter of a press roll is controlled to be 50-70 mm;

(S2), after being ground, the singeing treatment is carried out at the conveyor speed of 70-75m/min and the cloth surface temperature is controlled at 145-155 ℃;

(S3), after singeing, carrying out alkali treatment for 4-12min in a strong alkali solution to obtain the processed carded cotton gauze material.

2. The processing method for improving the quality of the carded cotton yarns, according to claim 1, is characterized in that: the singeing treatment is to directly burn or fully burn the carded cotton yarn under the conditions that the flame intensity is 11-15mbar and the fire hole distance is 7 mm.

3. The processing method for improving the quality of the carded cotton yarns, according to claim 1, is characterized in that: the sanding treatment is to sand the singed cotton yarn under the conditions of 25-29bar air pressure and the model P320 of sand paper.

4. The processing method for improving the quality of the carded cotton yarns, according to claim 1, is characterized in that: the strong alkali solution is a sodium hydroxide solution with the concentration of 110-210 g/L.

5. The processing method for improving the quality of the carded cotton yarns, according to claim 1, is characterized in that: the alkali treatment is carried out under normal temperature conditions.

6. The processing method for improving the quality of the carded cotton yarns, according to claim 1, is characterized in that: the processing method for improving the quality of the carded cotton yarns further comprises the following steps: the dyeing treatment is carried out after the alkali treatment.

7. The processing method for improving the quality of the carded cotton yarns, according to claim 6, is characterized in that: the operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material in a boiling and bleaching agent, boiling the cotton gauze at 90-110 deg.C for 55-65min, adding whitening agent and whitening auxiliary agent at 90-96 deg.C, treating for 15-25min, softening, and drying.

8. The processing method for improving the quality of the carded cotton yarns, according to claim 7, is characterized in that: the boiling and bleaching agent comprises an oil removing agent with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 5-8g/L and sodium hydroxide solution with the concentration of 5-7g/L in a weight ratio of 1: 1: 1, mixing; the whitening agent is the whitening agent with the concentration of 0.3 g/L; the whitening auxiliary agent is bleaching alkali powder with the concentration of 0.5 g/L.

9. The processing method for improving the quality of the carded cotton yarns, according to claim 6, is characterized in that: the operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material into a cloth boiling medicament, boiling the cloth at 90-110 ℃ for 30-45min, adding a dye and a dye auxiliary agent, dyeing at 60-80 ℃ for 30-65min, softening and drying.

10. The processing method for improving the quality of the carded cotton yarns, according to claim 9, is characterized in that: the boiling and bleaching agent comprises an oil removing agent with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 3-4g/L and sodium hydroxide solution with the concentration of 5-7g/L in a weight ratio of 1: 1: 1 and mixing.

Technical Field

The invention relates to the technical field of knitting yarns, in particular to a processing method for improving the quality of carded cotton yarns.

Background

The cotton carding yarn, i.e. the carded cotton yarn, is also called as carded yarn and carded wool, and refers to yarn which is carded according to a common spinning system and is spun without a combing process. The roving has the defects of high short fiber content, poor fiber parallel straightness, loose structure, much fuzz, low yarn count and poor quality.

The combed yarn is yarn spun by a combed spinning system by using cotton fiber; combing is carried out by a combing machine in the processing process of cotton yarns, and aims to remove more short fibers and impurities, have better yarn levelness and smoother surface, and have the price more expensive than that of combing by 2000-one ton and 5000 yuan, for example, the difference between 40S combed yarns and combing yarns is about 3000 yuan. The cool hemp type knitted fabric made of the heavy-twisted combed yarn not only has a hemp yarn feeling, but also has good cool hygroscopicity, particularly twisting of real silk, is an ideal high-grade knitted fabric, has the excellent performance of the real silk, has plump hand feeling, is stiff and has a body, has good dimensional stability and good crease resistance, and is an ideal fabric for high-grade professional clothing and casual clothing.

Because cotton fiber can lose a large amount of cotton fiber in the combing process, the cost is high, the loss is large, and if the combing cotton yarn is adopted to replace the combing yarn, the quality of the woven fabric is reduced, and the quality is influenced.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the processing method for improving the quality of the carding cotton yarn.

The purpose of the invention is realized by the following technical scheme: a processing method for improving the quality of carded cotton yarns comprises the following steps:

(S1), the carded cotton yarns are woven into cloth, and then sanding treatment is carried out at the speed of a conveyor of 25-35m/min and the diameter of a press roll is controlled to be 50-70 mm;

(S2), after being ground, the singeing treatment is carried out at the conveyor speed of 70-75m/min and the cloth surface temperature is controlled at 145-155 ℃;

(S3), after singeing, carrying out alkali treatment for 4-12min in a strong alkali solution to obtain the processed carded cotton gauze material.

According to the processing method for improving the quality of the carding cotton yarn, the cotton fiber does not need to be subjected to combing spinning, the quality of the processed carding cotton gauze material is equivalent to that of the combing cotton gauze material, the quality of the carding cotton yarn is improved, the production of the carding cotton yarn instead of the combing yarn is realized, and the production cost is greatly saved. The processing method has the advantages of simple operation, convenient control, high production efficiency and low production cost, and can be used for large-scale production. After the carding cotton gauze material is subjected to sanding, singeing and alkali treatment, the cloth surface fluff is short, and the cloth surface fluff, yarn levelness, bursting, hand feeling, fiber loss and fuzzing ball resistance are all equivalent to those of the carding cotton gauze material.

Preferably, the singeing treatment is to directly burn or fully burn the carded cotton yarn under the conditions that the flame intensity is 11-15mbar and the fire hole distance is 7 mm.

By adopting the technical scheme, the cloth surface temperature is controlled at 145-155 ℃, the conveyor speed of 70-75m/min is combined, the cloth surface hairiness smoothness is improved, the anti-pilling effect is improved, and the neps, cotton grains, cotton seed hulls and the like on the cloth surface of the common cotton carding yarn can be reduced besides the improvement of the cloth surface smoothness by singeing; the flame intensity is controlled to be 11-15mbar, the fire hole distance is controlled to be 7mm, and the loss of a large amount of cotton fibers caused by excessive singeing of the carded cotton yarns is avoided.

Preferably, the sanding treatment is to sand the singed cotton yarn under the conditions of air pressure of 25-29bar and sand paper model P320.

By adopting the technical scheme, neps, cotton grains and cotton seed hulls of the carded cotton yarns are removed, and the cloth is softer and more comfortable in hand feeling and has the feeling of a short fluff layer.

Preferably, the strong alkali solution is a sodium hydroxide solution with the concentration of 110-210 g/L.

By adopting the technical scheme, the high-concentration alkali is used for processing to increase the tissue density and elasticity of the common cotton carding yarn cloth.

Preferably, the alkali treatment is performed under normal temperature conditions.

By adopting the technical scheme, the condition is mild, the alkali treatment is uniform, and the quality of the common cotton carding yarn cloth is influenced by alkali spots easily generated by the alkali treatment under the heating condition.

Preferably, the processing method for improving the quality of the carded cotton yarn further comprises the following steps: and dyeing treatment is carried out after alkali treatment so as to obtain the carded cotton gauze materials with various color systems.

Preferably, the dyeing process comprises the following steps: placing the alkali-treated cotton gauze material in a boiling and bleaching agent, boiling the cotton gauze at 90-110 deg.C for 55-65min, adding whitening agent and whitening auxiliary agent at 90-96 deg.C, treating for 15-25min, softening, and drying.

By adopting the technical scheme, the carded cotton gauze material with the bleached color system is obtained, and the quality of the carded cotton yarns is not influenced. Further, the scouring and bleaching agent comprises an oil removing agent with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 5-8g/L and sodium hydroxide solution with the concentration of 5-7g/L in a weight ratio of 1: 1: 1, mixing; the whitening agent is the whitening agent with the concentration of 0.3 g/L; the whitening auxiliary agent is bleaching alkali powder with the concentration of 0.5 g/L.

In another preferred embodiment, the dyeing process comprises the following steps: placing the alkali-treated cotton gauze material into a cloth boiling medicament, boiling the cloth at 90-110 ℃ for 30-45min, adding a dye and a dye auxiliary agent, dyeing at 60-80 ℃ for 30-65min, softening and drying.

By adopting the technical scheme, the dyeing is carried out under the combined action of the dye auxiliary agent after the cloth boiling agent is used for boiling cloth, so that the dye is promoted to be immersed into the common cotton carding yarn cloth.

Further, the scouring and bleaching agent comprises an oil removing agent with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 3-4g/L and sodium hydroxide solution with the concentration of 5-7g/L in a weight ratio of 1: 1: 1 and mixing.

The invention has the beneficial effects that: according to the processing method for improving the quality of the carded cotton yarn, cotton fibers do not need to be subjected to combing spinning, the quality of the processed carded cotton gauze material is equivalent to that of the combed gauze material, the quality of the carded cotton yarn is improved, the carded cotton yarn is produced by replacing the combed yarn, and the production cost is greatly saved. The processing method has the advantages of simple operation, convenient control, high production efficiency and low production cost, and can be used for large-scale production. After the carding cotton yarn is subjected to sanding, singeing and alkali treatment, the cloth surface fluff is short, and the cloth surface fluff, yarn levelness, bursting, hand feeling, fiber loss and fuzzing ball resistance are all equivalent to those of the combed yarn cloth.

Detailed Description

The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.

Example 1

A processing method for improving the quality of carded cotton yarns comprises the following steps:

(S1), weaving the carded cotton yarn with the specification of KC32S into cloth, and sanding at the speed of a conveyor of 30m/min and the diameter of a press roll of 60 mm;

(S2), after being ground, singeing treatment is carried out at the conveyor speed of 73m/min and the cloth cover temperature is controlled at 150 ℃;

(S3), after singeing, alkali treating for 10min at normal temperature in a sodium hydroxide solution with the concentration of 200g/L to obtain the processed carded cotton gauze material.

The singeing treatment is to fully burn the carded cotton yarn under the conditions that the flame intensity is 13mbar and the fire hole distance is 7 mm.

The sanding treatment is to sand the singed carded cotton yarn under the conditions of air pressure of 27bar and abrasive paper model P320.

The processing method for improving the quality of the carded cotton yarns further comprises the following steps: the dyeing treatment is carried out after the alkali treatment.

The operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material into a boiling and bleaching agent, boiling the cotton cloth at 97 ℃ for 60min, adding a whitening agent and a whitening auxiliary agent, dyeing at 93 ℃ for 20min, softening and drying.

The boiling and bleaching agent comprises a TX-1109 degreaser with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 5g/L and sodium hydroxide solution with the concentration of 6g/L according to the weight ratio of 1: 1: 1, mixing; the whitening agent is VBL with the concentration of 0.3 g/L; the whitening auxiliary agent is a sodium carbonate solution with the concentration of 0.5 g/L. The volume ratio of the boiling and bleaching agent to the whitening auxiliary agent is 1: 0.5: 0.1.

example 2

A processing method for improving the quality of carded cotton yarns comprises the following steps:

(S1), weaving the carded cotton yarn with the specification of KC32S into cloth, and sanding at the speed of a conveyor of 25m/min and the diameter of a press roll of 50 mm;

(S2), after being ground, singeing treatment is carried out at the speed of a conveyor of 70m/min and the temperature of the cloth surface is controlled at 145 ℃;

(S3), after singeing, alkali treating for 12min at normal temperature in a sodium hydroxide solution with the concentration of 180g/L to obtain the processed carded cotton gauze material.

The singeing treatment is to directly burn the carded cotton yarns under the conditions that the flame intensity is 11mbar and the fire hole distance is 7 mm.

The sanding treatment is to sand the singed carded cotton yarns under the conditions of air pressure of 25bar and abrasive paper model P320.

The processing method for improving the quality of the carded cotton yarns further comprises the following steps: the dyeing treatment is carried out after the alkali treatment.

The operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material in a boiling and bleaching agent, boiling the cotton cloth at 96 ℃ for 65min, adding a whitening agent and a whitening auxiliary agent, dyeing at 90 ℃ for 20min, softening and drying.

The boiling and bleaching agent comprises a TX-1109 degreaser with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 4g/L and a sodium hydroxide solution with the concentration of 5g/L according to the weight ratio of 1: 1: 1, mixing; the whitening agent is VBL with the concentration of 0.3 g/L; the whitening auxiliary agent is a sodium carbonate solution with the concentration of 0.5 g/L. The volume ratio of the boiling and bleaching agent to the whitening auxiliary agent is 1: 0.5: 0.1.

example 3

A processing method for improving the quality of carded cotton yarns comprises the following steps:

(S1), weaving the carded cotton yarn with the specification of KC32S into cloth, and sanding at the speed of a conveyor of 35m/min and the diameter of a press roll of 70 mm;

(S2), after sanding, singeing at the speed of a conveyor of 75m/min and at the temperature of 155 ℃;

(S3), after singeing, alkali treating for 8min at normal temperature in a sodium hydroxide solution with the concentration of 210g/L to obtain the processed carded cotton gauze material.

The singeing treatment is to fully burn the carded cotton yarn under the conditions that the flame intensity is 15mbar and the fire hole distance is 7 mm.

The sanding treatment is to sand the singed carded cotton yarn under the conditions of 29bar of air pressure and the model P320 of sand paper.

The processing method for improving the quality of the carded cotton yarns further comprises the following steps: the dyeing treatment is carried out after the alkali treatment.

The operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material into a boiling and bleaching agent, boiling the cotton cloth at 98 ℃ for 55min, adding a whitening agent and a whitening auxiliary agent, dyeing at 96 ℃ for 20min, softening and drying.

The boiling and bleaching agent comprises a TX-1109 degreaser with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 6g/L and a sodium hydroxide solution with the concentration of 7g/L according to the weight ratio of 1: 1: 1, mixing; the whitening agent is VBL with the concentration of 0.3 g/L; the whitening auxiliary agent is a sodium carbonate solution with the concentration of 0.5 g/L. The volume ratio of the boiling and bleaching agent to the whitening auxiliary agent is 1: 0.5: 0.1.

example 4

A processing method for improving the quality of carded cotton yarns comprises the following steps:

(S1), weaving the carded cotton yarn with the specification of KC32S into cloth, and sanding at the speed of a conveyor of 30m/min and the diameter of a press roll of 70 mm;

(S2), after being ground, singeing treatment is carried out at the speed of a conveyor of 70m/min and the temperature of the cloth surface is controlled at 150 ℃;

(S3), after singeing, alkali treating for 10min at normal temperature in a sodium hydroxide solution with the concentration of 200g/L to obtain the processed carded cotton gauze material.

The singeing treatment is to fully burn the carded cotton yarn under the conditions that the flame intensity is 14mbar and the fire hole distance is 7 mm.

The sanding treatment is to sand the singed carded cotton yarn under the conditions of 29bar of air pressure and the model P320 of sand paper.

The processing method for improving the quality of the carded cotton yarns further comprises the following steps: the dyeing treatment is carried out after the alkali treatment.

The operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material into a boiling and bleaching agent, boiling the cotton cloth at 97 ℃ for 60min, adding a whitening agent and a whitening auxiliary agent, dyeing at 95 ℃ for 20min, softening and drying.

The boiling and bleaching agent comprises a TX-1109 degreaser with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 5g/L and a sodium hydroxide solution with the concentration of 5g/L according to the weight ratio of 1: 1: 1, mixing; the whitening agent is VBL with the concentration of 0.3 g/L; the whitening auxiliary agent is a sodium carbonate solution with the concentration of 0.5 g/L. The volume ratio of the boiling and bleaching agent to the whitening auxiliary agent is 1: 0.5: 0.1.

example 5

This example differs from example 1 in that:

the operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material into a cloth boiling medicament, boiling the cloth at 97 ℃ for 60min, adding a dye and a dye auxiliary agent, dyeing at 60 ℃ for 60min, softening and drying.

The boiling and bleaching agent comprises a TX-1109 degreaser with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 3g/L and a sodium hydroxide solution with the concentration of 6g/L according to the weight ratio of 1: 1: 1 and mixing. The dye is prepared by mixing 0.75% of active yellow 86, 1.15% of active red 120, 5.4% of active blue 39 and the balance of water in percentage by mass, and the dye auxiliary agent is prepared by mixing 60g/L of NaCl and 20g/L of Na2CO3 according to the weight ratio of 1: 1 are mixed. The volume ratio of the cloth boiling medicament to the dye auxiliary agent is 1: 0.5: 0.1.

example 6

This example differs from example 2 in that:

the operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material into a cloth boiling medicament, boiling the cloth at 96 ℃ for 65min, adding a dye and a dye auxiliary agent, dyeing at 55 ℃ for 65min, softening and drying.

The boiling and bleaching agent comprises a TX-1109 degreaser with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 3g/L and a sodium hydroxide solution with the concentration of 5g/L according to the weight ratio of 1: 1: 1 and mixing. The dye is prepared by mixing 0.75% of active yellow 86, 1.15% of active red 120, 5.4% of active blue 39 and the balance of water in percentage by mass, and the dye auxiliary agent is prepared by mixing 60g/L of NaCl and 20g/L of Na2CO3 according to the weight ratio of 1: 1 are mixed. The volume ratio of the cloth boiling medicament to the dye auxiliary agent is 1: 0.5: 0.1.

example 7

This example differs from example 3 in that:

the operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material into a cloth boiling medicament, boiling the cloth at 98 ℃ for 55min, adding a dye and a dye auxiliary agent, dyeing at 65 ℃ for 55min, softening and drying.

The boiling and bleaching agent comprises a TX-1109 degreaser with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 4g/L and a sodium hydroxide solution with the concentration of 7g/L according to the weight ratio of 1: 1: 1 and mixing. The dye is prepared by mixing 0.75% of active yellow 86, 1.15% of active red 120, 5.4% of active blue 39 and the balance of water in percentage by mass, and the dye auxiliary agent is prepared by mixing 60g/L of NaCl and 20g/L of Na2CO3 according to the weight ratio of 1: 1 are mixed. The volume ratio of the cloth boiling medicament to the dye auxiliary agent is 1: 0.5: 0.1.

example 8

This example differs from example 4 in that:

the operation steps of the dyeing treatment comprise: placing the alkali-treated cotton gauze material into a cloth boiling medicament, boiling the cloth at 97 ℃ for 60min, adding a dye and a dye auxiliary agent, dyeing at 60 ℃ for 60min, softening and drying.

The boiling and bleaching agent comprises a TX-1109 degreaser with the concentration of 0.8g/L, hydrogen peroxide with the concentration of 3g/L and a sodium hydroxide solution with the concentration of 6g/L according to the weight ratio of 1: 1: 1 and mixing. The dye is prepared by mixing 0.75% of active yellow 86, 1.15% of active red 120, 5.4% of active blue 39 and the balance of water in percentage by mass, and the dye auxiliary agent is prepared by mixing 60g/L of NaCl and 20g/L of Na2CO3 according to the weight ratio of 1: 1 are mixed. The volume ratio of the cloth boiling medicament to the dye auxiliary agent is 1: 0.5: 0.1.

comparative example 1

A combed yarn having a gauge JC32S was dyed in the same manner as in example 1.

Comparative example 2

A combed yarn having a gauge JC32S was dyed in the same manner as in example 4.

Comparative example 3

A carded cotton yarn, having the specification KC32S, was dyed in the same manner as in example 1.

Comparative example 4

A carded cotton yarn, having the specification KC32S, was dyed in the same manner as in example 4.

Example 9

Taking the cloth of the examples 1-8 and the comparative examples 1-4, wherein the cloth is 30S/1 all-cotton plain cloth (weaving bead ground) (100% cotton), and testing the fuzzing performance, the cloth surface hairiness and the bursting capacity of the cloth; the test method is as follows:

pilling performance: (1) testing and grading under the condition of 2500 revolutions according to a modified Martindale method of GB/T4802.2-2008; (2) according to a GB/T4802.1-2008 circular locus E method, the test and the rating are carried out under the conditions of 600 times of pilling and 780CN pressure.

And (3) cloth surface hairiness: a full-automatic cloth smoothness detector with model number of JT-BP320 is adopted for testing and grading, wherein grade 1 is thick long and short hairs, grade 2 is thick long and thin short hairs, grade 3 is thin long hairs, grade 4 is long hairs and no short hairs are sparse, and grade 5 is smooth and no hairs on the surface.

Bursting capacity: according to the steel ball method of GB/T19976-2005, the steel ball has a diameter of 38mm, and the bursting strength is tested.

The test results are shown in table 1 below:

TABLE 1

As can be seen from the above table 1, according to the processing method for improving the quality of the carded cotton yarn, the quality of the processed carded cotton gauze material is equivalent to that of the combed cotton gauze material, the quality of the carded cotton yarn is improved, the carded cotton yarn is produced by replacing the combed yarn, and the production cost is greatly saved; is especially suitable for fabric dyed with whitening agent.

The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.