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Continuous pad dyeing method of polyamide fibers and blended fabrics thereof

A technology of blended fabrics and nylon, applied in the field of continuous pad dyeing of nylon and its blended fabrics, can solve the problems of batch difference and low dyeing efficiency of exhaust dyeing, and achieve the effect of ensuring color fastness, good use value and color yield

Inactive Publication Date: 2011-05-25
SHANGYU XINSHENG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a continuous pad dyeing process of nylon and its blended fabrics. The process not only solves the low dyeing efficiency and batch difference problems of exhaust dyeing by hot rolling acid dyes, but also improves the efficiency of nylon and its blended fabrics. Excellent color fastness, so as to meet the requirements of high-end clothing fabrics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Pretreatment of nylon / cotton interwoven fabric

[0023] Process: nylon / cotton interwoven fabric-singeing-cold padding-mercerizing-pre-setting.

[0024] ① Choose 50 / 50 nylon-cotton interwoven fabric.

[0025] ②The singeing process is one positive and one reverse fast singeing, and the speed is 140m / min.

[0026] ③The cold-rolling stacking process consists of two dipping and two rolling, rotating and stacking for 24 hours.

[0027] Dyeing process prescription (final concentration):

[0028] Caustic soda 40g / L

[0029] Hydrogen peroxide 20g / L

[0030] Sodium silicate 5g / L

[0031] Penetrant JFC 2~3g / L

[0032] Chelating agent X-178 2g / L

[0033] Quyouling TF-101C 2~4g / L

[0034] The solvent is water.

[0035] ④ Mercerizing

[0036] Treatment liquid prescription ():

[0037] Caustic soda 210~220g / L

[0038] The solvent is water.

[0039] ⑤ Presetting process: the setting temperature is 150~160℃×30min.

[0040] 2. Dyeing of nylon / cotton interwoven fabric

[0041] ①The process flow of rolling aci...

Embodiment 2

[0067] According to the method steps described in Example 1, the difference is that the process of rolling reactive dyes and then acid dyes is adopted, and other process parameters remain unchanged. The process is as follows:

[0068] Conventional padding of reactive dyes → set padding of acid dye solution (one dip and one pad, hot rolling 65~70℃) → infrared pre-drying → first drying room (80℃) → second drying room (100℃) → doffing → dip Roll fixing solution (one dip and one roll, room temperature)→steam (steam temperature 103℃, time 90 seconds)→cold water washing→two-stage fixing (70~80℃)→water washing→drying.

[0069] The nylon / cotton blended fabric after the above treatment is dark brown, and the rubbing fastness of the fabric is evaluated according to GB / T3920-1997. Among them, the dry rubbing resistance is grade 4 to 5 and the wet rubbing resistance is grade 4. The fabric is evaluated according to GB / T3921-1997 The color fastness to washing (60℃), of which the fade fastness is...

Embodiment 3

[0071] According to the dyeing method described in implementation 1, the difference is that the 50 / 50 nylon / cotton interwoven fabric is replaced with pure nylon fabric, which eliminates the routine application of reactive dye solution step, and the acid dye prescription is replaced with the following components:

[0072] Weak Acid Yellow B-4R 3g / L

[0073] Red A-2B 3g / L

[0074] Blue B-N2RL 4g / L

[0075] The solvent is water.

[0076] After drying, a light brown nylon fabric can be obtained. The rubbing fastness of the fabric is evaluated according to GB / T3920-1997. Among them, the dry rubbing resistance is grade 4 to 5 and the wet rubbing resistance is grade 4. The fabric resistance is evaluated according to GB / T3921-1997. Washing fastness (60℃), among which fade fastness is grade 4 to 5, stain fastness is grade 4.

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Abstract

The invention provides a continuous pad dyeing method of polyamide fibers and blended fabrics thereof, and the method comprises: the polyamide fibers or the blended fabrics thereof are dyed after pre-treatment, and the dyeing is the single pad dyeing of acid dyes or the sequential pad dyeing of the acid dyes and active dyes. The pad dyeing of the acid dyes has steps as follows: the polyamide fibers or the blended fabrics thereof after treatment are immersed in dyeing liquid, the acid dyes are hot rolled at 60-85 DEG C, color fixing liquid is padded after drying, the color fixing liquid is further padded after steaming and washing, and then washing and drying are carried out. The continuous pad dyeing method has the beneficial effects that the continuous pad dyeing method selects the hot rolling to lead the color yield of the polyamide fibers to be deeper and combines the dual-color-fixing process to ensure the color yield and the color fastness of the fabrics, thereby leading the fabrics to have good using value and meeting the needs of medium and high-grade fabrics.

Description

(1) Technical field [0001] The present invention relates to a continuous pad dyeing method of nylon and its blended fabrics, in particular to a process for continuous pad dyeing of nylon fabrics and acid / reactive dyes on nylon blended fabrics (nylon / cotton blended fabric) using acid dyes . (2) Background technology [0002] Because of its high strength, abrasion resistance, and good resilience, nylon fiber is widely used in pure or blended clothing and knitwear, especially the blended nylon / cotton interwoven fabric, which has a good hand feeling and comfortable clothing. It has better air permeability and good abrasion resistance and durability. It is favored by consumers and belongs to high-grade materials. [0003] Due to the organizational structure of nylon, the chemical properties of acid dyes and the reasons for dyeing, in order to obtain bright colors, the method of dip dyeing is usually used. This is because: during dip dyeing, the fabric is always immersed in the dyeing s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/24D06P3/87D06P1/39D06P1/38D06P5/02D06B3/18
Inventor 阮伟祥宋瑜杨文军
Owner SHANGYU XINSHENG CHEM IND
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