阅读说明：本技术 一种可用于牛仔洗水的色纺纱的制作方法 (Method for manufacturing colored spun yarn for washing jean ) 是由 万震 杨卫国 朱小朋 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种可用于牛仔洗水的色纺纱的制作方法,是将活性靛蓝系列染色纤维、普通白纤维以比例制成特定风格的色纺纱。将上述色纺纱织布后,采用普洗、雪花洗、马骝、喷花等牛仔洗水方法,可得到洗旧或局部洗白风格的牛仔面料。本发明方法制成的可牛仔洗水的色纺纱,颜色深度和色光稳定可控,摩擦色牢度较好,可为加工牛仔针织休闲服、牛仔童装、牛仔梭织服装等的上佳原料。(The invention discloses a method for manufacturing a colored spun yarn for washing jeans, which is used for manufacturing the colored spun yarn with a specific style by using active indigo series dyed fibers and common white fibers according to a proportion. After the colored spun yarns are woven, jean fabric with old washing or local white washing style can be obtained by adopting jean washing methods such as normal washing, snowflake washing, horse rat, spraying decoration and the like. The colored spun yarn capable of washing the jeans prepared by the method has stable and controllable color depth and color light and better color fastness to friction, and can be used as a top-quality raw material for processing jeans knitted leisure wear, jeans garments, jeans woven garments and the like.)

1. The method for manufacturing the colored spun yarn for washing the jean is characterized in that natural fiber loose fibers are dyed by a reduced indigo dye containing active groups, and the natural fibers are cotton, viscose, modal or tencel loose fibers.

2. The method according to claim 1, wherein the reactive group-containing vat indigo dye is a dye containing a reactive group in a vat dye matrix, preferably a CF reactive group indigo dye, and the reactive group-containing vat indigo dye is used in an amount of 5-12% by weight of the natural fiber bulk.

3. The method of claim 1, wherein a reactive dye dyeing process is used to dye cellulose fibers such as cotton, viscose, modal or tencel.

4. The method for manufacturing the colored spun yarn for the washing water of jeans according to claim 1 or 3, characterized in that anhydrous sodium sulphate is added to accelerate dyeing and soda is added to fix color at the temperature of 50-70 ℃ for 30-60 minutes, then washing is carried out until the dyed yarn is neutral, and softener is added to fix color to obtain the indigo cellulose fiber.

5. The method as claimed in claim 4, wherein the raw cotton is scoured at high temperature before dyeing to improve water absorption and bleached to improve whiteness of fiber ground color.

6. The method of claim 4, wherein the dyeing pattern is through dyeing.

7. The method for manufacturing the colored spun yarn for the denim washing water according to any one of claims 1 to 6, characterized in that the dyed fiber of the active indigo and the common white fiber are mixed in a ratio of 1-10: 10-1, weaving the dyed yarns, and then adopting jean washing methods such as general washing, snow washing, horse monkey, spraying decoration and the like to obtain the jean fabric with old washing or local white washing style, wherein the common white fiber can be a loose fiber or two or more than two.

8. The method of claim 7, wherein the spun-dyed yarn is plain, AB yarn, segment color yarn, slub yarn or drop yarn.

9. The method of claim 7, wherein the washing water treatment comprises washing with 5-15g/l potassium permanganate and phosphoric acid (1:1), such as washing with water, washing with snow, washing with horse rat, spraying with water, etc., to obtain the washed jean style with gradually changed shade or partially washed white jean style.

10. A manufacturing method of a colored spun yarn for washing jeans is characterized by comprising the following steps:

A. dyeing natural fiber loose fibers with CF active radical indigo series dyes, wherein the natural fibers are cotton, viscose, modal or tencel loose fibers; the usage amount of the CF active group indigo series dye is 6 to 10 percent of the weight of the natural fiber loose fiber;

B. during dyeing, anhydrous sodium sulphate is added to promote dyeing and soda ash is added to fix color at the temperature of 50-70 ℃ for 30-60 minutes, then washing is carried out until the temperature is neutral, a softening agent is added to fix the color, and the indigo cellulose fiber is obtained, wherein the dyeing mode is fiber through dyeing;

C. dyeing the active indigo blue and common white fibers in a proportion of 1-10: 10-1, weaving the dyed yarns, and then adopting jean washing methods such as general washing, snow washing, horse monkey, spraying decoration and the like to obtain jean fabric with old washing or local white washing style, wherein the common white fiber can be a loose fiber or two or more than two;

D. the washing water treatment such as general washing, snowflake washing, horse monkey, spraying flower and the like is carried out by adopting 5-15g/l of potassium permanganate and phosphoric acid (1:1), and the washing old style with hidden depth and gradual change or the jean style with local white washing can be obtained.

Technical Field

The invention relates to a method for manufacturing a colored spun yarn, in particular to a method for manufacturing a colored spun yarn for washing jeans.

Background

The jeans become a star product which never returns all the year round due to the characteristics of simplicity, comfort, easy matching and the like. In the prior art, indigo dyeing of jeans is carried out by selecting common indigo (reduction type) in the whole industry (cloth and warp), reducing water-insoluble indigo into water-soluble leuco body by sodium hydrosulfite, padding the warp or cloth, rolling out, exposing the product in the atmosphere, oxidizing the product by air, converting the water-soluble leuco body into water-insoluble indigo, mainly oxidizing the surface of the product, and concentrating the dye on the surface of the cloth or yarn, thus having poor rubbing fastness. Even if the common indigo is reduced into leuco body, the dyeing property is poor, and the depth can be enhanced by repeating cycles of reduction, pad dyeing and oxidation for many times. This worldwide common model.

Denim such as cotton/tencel is usually warp dyed by a sizing-dyeing combination machine (sheet dyeing) or a bundle dyeing machine (rope dyeing), wherein the dye is mainly indigo blue and is supplemented with sulfur black and other dyes. Indigo has a small molecular structure, poor planarity and low affinity to cellulose fibers, and the dyeing depth is gradually improved by repeatedly pad dyeing leuco bodies and carrying out air oxidation during warp dyeing. However, indigo warp dyeing has the defects of unstable color light and large color difference, and the indigo dye is oxidized and colored on the upper surface of the yarn, so that the friction fastness is poor and the indigo warp dyeing is not suitable for high-grade products and children's garments.

The loose cotton fiber indigo dyeing is difficult to realize according to a loose fiber dyeing mode. The fiber cotton layer in the loose fiber dyeing machine is thick, free water is filled between the fiber cotton layers, the affinity of the indigo leuco body is low, and even if the indigo leuco body is attached to the surface of the fiber, the indigo leuco body cannot contact with air and cannot be oxidized normally; if hydrogen peroxide is used for oxidation, the leuco can be washed away when the hydrogen peroxide is added, so that the color is light, the deep dyeing property is poor and the color is very serious. In the test of the dyeing machine with the dehydration function, after the indigo leuco body is dyed, dehydration is carried out firstly, and then air is blown by a blower to oxidize the indigo leuco body, but the color is light, and the color difference between the inner layer and the outer layer is serious. Therefore, dyeing with ordinary indigo cannot be performed throughout the bulk fiber industry.

Disclosure of Invention

The invention aims to provide a method for manufacturing a colored spun yarn for washing jeans, and particularly relates to a method for manufacturing a colored spun yarn with a specific style by using an active indigo series dyed fiber and a common white fiber in proportion, and obtaining an old washing or local white washing style by using jeans washing methods such as general washing, snow washing, horse washing, flower spraying and the like after weaving.

These and other objects of the invention will be further apparent and elucidated by the following detailed description and illustrations.

The invention relates to a method for manufacturing a colored spun yarn for washing jean, which is to dye natural fiber loose fibers by using a reduced indigo dye containing active groups, wherein the natural fibers are cotton, viscose, modal or tencel loose fibers.

In the method for manufacturing the colored spun yarn for washing the jean, the vat indigo dye containing the active group is a dye containing an active group in a vat dye matrix, preferably a CF active group indigo series dye, and the cloth surface of the dyed fabric can become green light if the dyed fabric is soaked in a 5% sodium hypochlorite solution for 30 minutes, and the dosage of the vat indigo dye containing the active group is 5% -12% of the weight of the natural fiber loose fiber, preferably 6% -10%.

In the manufacturing method of the colored spun yarn for washing jean, a reactive dye dyeing process is adopted to dye cellulose fibers such as cotton, viscose, modal or tencel.

Further, in the manufacturing method of the colored spun yarn for washing jeans, anhydrous sodium sulphate is added to accelerate dyeing and soda ash is added to fix color during dyeing, the temperature is 50-70 ℃, the time is 30-60 minutes, then washing is carried out until the dyed yarn is neutral, and a softening agent is added to fix color, so that the indigo cellulose fiber is obtained.

In the method for manufacturing the colored spun yarn for washing the jeans, the raw cotton needs to be boiled at high temperature before being dyed so as to improve the water absorption performance, and the raw cotton is bleached so as to improve the whiteness of the ground color of the fiber.

In the manufacturing method of the colored spun yarn for washing jeans, the dyeing mode is fiber through dyeing. Compared with the traditional indigo blue, the friction fastness of the indigo blue is improved by 0.5 to 1 grade on the surface of cloth cover or yarn by oxidation and coloring.

Preferably, in the method for manufacturing the colored spun yarn for washing jeans, the fiber dyed by the active indigo and the common white fiber are mixed according to the weight ratio of 1-10: 10-1, preferably mixing the dyed fiber with the common white fiber in a weight ratio of 1-5: 5-1, weaving the dyed yarns, and then adopting jean washing methods such as general washing, snow washing, horse monkey, spraying decoration and the like to obtain the jean fabric with old washing or local white washing style. The common white fiber can be a loose fiber, and can also be two or more than two.

In the manufacturing method of the colored spun yarn for washing jeans, the colored spun yarn is common style, AB yarn, segment color yarn, slub yarn or nep yarn and the like.

Importantly, in the manufacturing method of the colored spun yarn for washing jeans, 5-15g/l of potassium permanganate and phosphoric acid (1:1 weight ratio) are adopted to carry out washing water treatment such as common washing, snowflake washing, horse rat, spraying decoration and the like, and the old washing style with gradual change of hidden depth or the jeans style with partial white washing can be obtained. If sodium hypochlorite is used for washing water treatment, the active group indigo dye cannot be washed light, but the cloth surface becomes green light.

Preferably, the manufacturing method of the colored spun yarn for washing the jean comprises the following steps:

A. dyeing natural fiber loose fibers with CF active radical indigo series dyes, wherein the natural fibers are cotton, viscose, modal or tencel loose fibers; the usage amount of the CF active group indigo series dye is 6 to 10 percent of the weight of the natural fiber loose fiber;

B. during dyeing, anhydrous sodium sulphate is added to promote dyeing and soda ash is added to fix color at the temperature of 50-70 ℃ for 30-60 minutes, then washing is carried out until the temperature is neutral, a softening agent is added to fix the color, and the indigo cellulose fiber is obtained, wherein the dyeing mode is fiber through dyeing;

C. dyeing the active indigo blue and common white fibers in a proportion of 1-10: 10-1, weaving the dyed yarns, and then adopting jean washing methods such as general washing, snow washing, horse monkey, spraying decoration and the like to obtain jean fabric with old washing or local white washing style, wherein the common white fiber can be a loose fiber or two or more than two;

D. the washing water treatment such as general washing, snowflake washing, horse monkey, spraying flower and the like is carried out by adopting 5-15g/l of potassium permanganate and phosphoric acid (1:1), and the washing old style with hidden depth and gradual change or the jean style with local white washing can be obtained.

The vat indigo dye containing active group used in the present invention includes indigo, black, navy, red, yellow, brilliant blue and other dyes, and the vat dye matrix contains active group, preferably CF active group indigo series dye produced by Guangzhou Dongyao company.

The invention adopts reactive dye dyeing process, and can carry out loose fiber dyeing on cellulose fibers such as cotton, viscose, modal or tencel. The reactive indigo has good coloring depth, convenient and easy color mixing, good color uniformity, and the fiber dye penetration improves the rubbing fastness, and is more suitable for the development trend of small batch and multiple varieties. For example, the active indigo dyed cotton and the common white fiber are made into colored spun yarns with a specific style in proportion, and the jean fabric with the washed old style or the partially washed white jean fabric with the hidden depth gradually changed can be obtained by adopting jean washing methods such as general washing, snowflake washing, horse rat, spraying flower and the like after weaving.

The active indigo used in the invention is obtained by modifying common indigo and grafting an active group on a parent body, so that the global history of the indigo can be firstly carried out by an active dyeing mode. Firstly, the reactive indigo is soluble in water, the dyeing mode is the same as that of the traditional reactive dye, and salt and alkali are added for dyeing. Secondly, because the loose fiber mode is through dyeing, different from the surface oxidation coloring of the traditional yarn or cloth cover, the friction fastness is better. The rubbing fastness is a difficult problem which is difficult to solve by the traditional jeans.

The color spun yarn prepared by the method can be used for washing jeans, has stable and controllable color depth and color light and good friction color fastness, and can be used as a top-quality raw material for processing jeans knitting casual wear, jeans garments, high-grade woven garments and the like.

The present invention is further illustrated by the following specific examples, which are intended to be illustrative only and not to limit the scope of the invention.

In the present invention, all parts and amounts are by weight based on the total weight, all raw materials and equipment used are commercially available, and reactive indigo is a reactive indigo CF series dye produced by the east dongyo company, guangzhou, unless otherwise specified.

Detailed Description