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Pigment dyeing method of denim yarn

A paint dyeing and paint color paste technology is applied in the field of paint dyeing technology, which can solve the problems of yarn defects and increase production costs, and achieve the effects of stable color, stable performance and excellent hand feeling.

Active Publication Date: 2012-07-25
CHANGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, it has been reported that the cellulose fiber is modified and then dyed with paint. The specific implementation method is to first scouring and desizing the cellulose fiber, washing and drying, then grafting and modifying, and then dyeing with paint, washing, and sizing. , this method can improve the dyeing depth and color fastness, but in the actual factory production, the cationic charge of the modified fiber reacts with the anionic charge in the paint dyeing working solution, causing the working solution to flocculate, stick to the roller, and yarn Unstable factors such as defects appear, and this method requires pre-treatment of the yarn and multiple washing and drying, which increases production costs

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A continuous pad dyeing method of pretreated dope black on 40s denim yarn. Follow the steps below to implement:

[0030] (1) Pretreatment of paint color paste black, its paste composition and mass percentage:

[0031] Coating carbon black 60%

[0032] Cationic binder PDY (Changzhou Hansi Chemical Co., Ltd.) 40%

[0033] The above ingredients are evenly mixed according to the above ratio, and the pH is adjusted to 9-10 with sodium hydroxide.

[0034] (2) Continuous pad dyeing of denim yarn

[0035] Prepare dyeing working solution, wherein step (1) prepares pretreatment paint color paste black 50g / L, penetrant 2g / L, sodium hydroxide adjusts pH to 9-10, 40s denim yarn is padded through dyeing working solution, Residual rate of 70%, oven-dried at 100°C for 1 minute, and then oven-baked at 120°C for 3 minutes.

[0036] The dyed black denim yarn has good color fastness and excellent hand feeling. The dry rubbing fastness can reach 3-4, the wet rubbing fastness can reach ...

Embodiment 2

[0038] A continuous pad dyeing method of pretreated dope yellow on 21s denim yarn. Follow the steps below to implement:

[0039] (1) Pretreatment of paint color paste yellow, its paste composition and mass percentage:

[0040] Paint Chrome Yellow 80%

[0041] Cationic binder PDY (Changzhou Hansi Chemical Co., Ltd.) 20%

[0042] The above ingredients are uniformly mixed according to the above ratio, and the pH is adjusted to 7-8 by sodium bicarbonate.

[0043] (2) Continuous pad dyeing of denim yarn

[0044] Be mixed with dyeing working solution, wherein step (1) prepares pretreatment paint color base yellow 100g / L, cationic binder PD Y (Changzhou Hansi Chemical Co., Ltd.) 10g / L, penetrant 5g / L, bicarbonate Adjust the pH to 7-8 with sodium, and pad the 21s denim yarn with the dyeing working solution to a 50% excess rate. Dry it in an oven at 90°C for 2 minutes, and then bake it in an oven at 150°C for 1 minute.

[0045] The dyed yellow denim yarn has good color fastness an...

Embodiment 3

[0047] A continuous pad dyeing method of pretreated pigment red on 16s denim yarn. Follow the steps below to implement:

[0048] (1) Pretreatment of paint color paste yellow, its paste composition and mass percentage:

[0049] Paint Red 70%

[0050] Cationic binder PDY (Changzhou Hansi Chemical Co., Ltd.) 30%

[0051] The above ingredients are evenly mixed according to the above ratio, and the pH is adjusted to 8-9 with sodium carbonate.

[0052] (2) Continuous pad dyeing of denim yarn

[0053] Be mixed with dyeing working solution, wherein step (1) prepares pretreatment paint color paste red 10g / L, penetrating agent 1g / L, sodium carbonate adjusts pH to 8-9, 16s denim yarn is padded through dyeing working solution, padding The remaining rate is 90%. Dry in an oven at 80°C for 3 minutes, and then bake in an oven at 140°C for 2 minutes.

[0054] The dyed red denim yarn has good color fastness and excellent hand feeling. The dry rubbing fastness can reach 4-5, the wet rubbin...

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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PUM

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Abstract

The invention relates to a pigment dyeing method of a denim yarn. The method comprises the following steps of: pretreating pigment printing paste by adopting a cationic binder; and continuously performing pad dyeing on the denim yarn by using the treated pigment printing paste. The denim yarn produced by the method has high color fastness and good handfeel, does not require steps such as water washing, and can be directly applied to sizing and weaving; and the process flow is shortened greatly, the energy consumption is lowered, and the production cost is saved.

Description

technical field [0001] The invention relates to a paint dyeing process on denim yarn, which belongs to the technical field of textile chemical industry. Background technique [0002] 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. People have gradually developed from a single indigo denim fabric to a colorful denim fabric, and the choice of dyes has also developed from indigo dyes to reactive dyes, vat dyes, sulfur dyes, coatings, etc. Among many dyeing methods, paint dyeing has attracted widespread attention due to its advantages of simple process and less additives. Compared with indigo, reactive, reduction, and sulfur dyeing, paint dyeing omits processes such as oxidation / reduction, water washing, and soaping. , save water and energy, improve production efficiency, and truly realize the clean production process of energy saving an...

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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IPC IPC(8): D06P1/52D06P1/00
Inventor 纪俊玲张聪
Owner CHANGZHOU UNIV
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