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A kind of dyeing or overdyeing method of denim yarn/garment

A yarn and denim technology, applied in the field of textile printing and dyeing, can solve the problems of losing the white core effect of denim, dyeing or over-dyeing dark colors, etc., and achieve the effect of rich variety and simple process

Active Publication Date: 2017-12-01
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention overcomes the difficulty of denim paint dyeing or over-dyeing dark color in the prior art, and needs to carry out cationic modification treatment on the fabric or yarn in advance; and the denim fabric or yarn will be dyed through when dyed with reactive dyes, resulting in loss of denim white Insufficient core effect, providing a new dyeing (or over-dyeing) method for colored denim yarn / fabric

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of dyeing or overdyeing method of denim yarn/garment
  • A kind of dyeing or overdyeing method of denim yarn/garment
  • A kind of dyeing or overdyeing method of denim yarn/garment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Sizing dyed black denim yarn

[0028] (1) Configure paint color paste 1, the composition and percentage of paint color paste are as follows:

[0029] Coating carbon black 50%

[0030] Cationic binder PDY (Changzhou Hansi Chemical Co., Ltd.) 30%

[0031] Polyvinylpyrrolidone 20%

[0032] After the above ingredients are evenly mixed, adjust the pH to 6.5 with citric acid.

[0033] (2) Get the paint color paste 1 obtained in step (1) and configure the dyeing solution as follows:

[0034]

[0035]

[0036] After mixing, adjust the pH value to 7-8 with sodium carbonate;

[0037] (3) After the sizing is first wetted with hot water, padding is carried out through the dyeing solution of step (2), and the excess rate is 95%, dried by an 80°C drying cylinder, steamed (105°C, 60s), Then bake in a baking oven at a temperature of 120°C for 4 minutes;

[0038] (4) Water washing (1 soaping → 1 hot washing → 2 cold washings → drying).

[0039] The dyed black denim yarn has...

Embodiment 2

[0044] Distressed dark blue denim over dyed with indigo denim yarn

[0045] (1) Configure paint color paste 2, the composition and percentage of the paint color paste are as follows:

[0046] Coating carbon black 60%

[0047] Cationic binder PDY (Changzhou Hansi Chemical Co., Ltd.) 30%

[0048] CMC 10%

[0049] After the above ingredients are evenly mixed, adjust the pH to 6 with citric acid.

[0050] (2) Get the paint color paste 2 that step (1) obtains and configure the dyeing solution as follows:

[0051]

[0052] After mixing, adjust the pH to 7.5 with sodium bicarbonate;

[0053] (3) After the indigo yarn is wetted with hot water, the dyeing solution of step (2) is used for padding, the excess rate is 100%, dried by a 90°C dryer, and steamed (110°C, 60s) , and then baked in a baking oven at a temperature of 125°C for 4 minutes;

[0054] (4) Water washing (1 soaping → 1 hot washing → 1 cold washing → 1 hot washing → 1 cold washing → drying).

[0055]The dyed blac...

Embodiment 3

[0060] Using white denim woven fabric (white cow) (320g / m 2 ) dyed yellow

[0061] (1) Configure the paint color paste 3, the composition and percentage of the paint color paste are as follows:

[0062] Paint Chrome Yellow 60%

[0063] Cationic binder PDY (Changzhou Hansi Chemical Co., Ltd.) 25%

[0064] Polypropylene Glycol 15%

[0065] After the above ingredients were uniformly mixed, the pH was adjusted to 7 with acetic acid.

[0066] (2) Get the paint color paste 3 that obtains in step (1) and configure the dyeing solution as follows:

[0067]

[0068] After mixing, adjust the pH to 8 with sodium bicarbonate;

[0069] (3) After wetting the white cattle with hot water, padding with the dyeing solution in step (2), the excess rate is 105%, drying in a drying cylinder at 100°C, steaming (102°C, 90s), Then bake in a baking oven at a temperature of 120°C for 4 minutes;

[0070] (4) Water washing (1 soaping → 1 hot washing → 1 cold washing → drying).

[0071] The dyed...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention belongs to the technical field of textile printing and dyeing and particularly relates to a dyeing or topping method for jeans yarns / garments. The dyeing and topping method dispenses with de-sizing, realizes padding of yarns / fabrics by coating active dyeing liquor, and achieves drying, steaming and baking of the yarns / fabrics and then water washing treatment. The method solves the problem that jeans pigment dyeing requires repeated (continuous) padding for dark color, and has the characteristic that a reactive dye avoids dye penetrability during dyeing and still keeps the cores of jeans white. As coatings and reactive dyes of complete chromatography are introduced for dyeing of jeans / yarns, the varieties of jeans fabrics are greatly enriched, and the method is simple and feasible. The yarns / fabrics subjected to dyeing (or topping) by the method can maintain the features of jeans, and has the unique style of achieving second-hand and whitening effects after being repeatedly washed.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, in particular to a method for dyeing or over-dyeing denim yarn / garment. Background technique [0002] Traditional denim fabric is a single-side dyed fabric made of warp dyed and weft yarns left blank. Generally, indigo dye is used to dye the warp yarn on the sizing and dyeing machine, and then interweaved with the natural color weft yarn; or the warp yarn is dyed with sulfur black and then interwoven with white weft yarn. With the continuous development of printing and dyeing technology in the yarn-dyed industry, the requirements for the style and color of denim fabrics are becoming more and more diversified. Colored denim fabrics are often produced in combination with sulfur dye sheet dyeing paste in China. There are also people who use the paint dip-dyeing process to produce colored denim fabrics with effects such as stone washing and grinding white. In recent years, vat ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/38D06P1/673D06P1/44D06P1/52D06P1/50D06P1/613
CPCD06P1/38D06P1/44D06P1/50D06P1/5242D06P1/525D06P1/6138D06P1/673
Inventor 汪媛何叶丽陈小利纪俊玲晏苏沙莹杨坤
Owner CHANGZHOU UNIV
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