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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: 2009-06-03
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 blended fabric

[0023] Process: brocade / cotton interwoven fabric-singeing-cold pad-batch-mercerizing-pre-setting.

[0024] ① Use 50 / 50 nylon-cotton blended fabric.

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

[0026] ③The process of cold pad-batch is two dipping and two rolling, and it is rotated and stacked for 24 hours.

[0027] Dye liquor 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] Deyouling TF-101C 2~4g / L

[0034] The solvent is water.

[0035] ④ Mercerized

[0036] Treatment solution prescription ():

[0037] Caustic soda 210~220g / L

[0038] The solvent is water.

[0039] ⑤Pre-setting process: The setting temperature is 150~160℃×30min.

[0040] 2. Dyeing of brocade / cotton blended fabric

[004...

Embodiment 2

[0067] According to the method steps described in Example 1, the difference is that the process of first rolling reactive dyes and then rolling acid dyes is adopted, and other process parameters are constant, and the flow process is as follows:

[0068] Conventional rolling of reactive dyes→set rolling of acid dye solution (one soaking and one rolling, hot rolling 65~70°C)→infrared pre-baking→first drying room (80°C)→second drying room (100°C)→falling cloth→dipping Color fixing solution (one soaking and one rolling, room temperature)→steaming (steaming temperature 103°C, time 90 seconds)→cold water washing→second color fixing (70~80°C)→water washing→drying.

[0069] The nylon / cotton blended fabric treated above is dark brown, and the color fastness to rubbing of the fabric is evaluated according to GB / T3920-1997, among which the dry rubbing resistance is 4~5, and the wet rubbing resistance is 4, and the fabric is evaluated according to GB / T3921-1997 The color fastness to washi...

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 by pure nylon fabric, and the conventional reactive dye solution step is omitted, and the acid dye prescription is replaced by 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 color fastness to rubbing of the fabric is evaluated according to GB / T3920-1997, among which the resistance to dry rubbing is 4 to 5, and the resistance to wet rubbing is 4. The color fastness to rubbing of the fabric is evaluated according to GB / T3921-1997. Color fastness to washing (60°C), among which the color fastness to fading is grade 4-5, and the color fastness to staining 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 invention relates to a continuous pad dyeing method for nylon and its blended fabrics, in particular to a process for continuously pad dyeing nylon fabrics using acid dyes and acid / reactive dyes for nylon blended fabrics (nylon / cotton blended fabrics) . (2) Background technology [0002] Because of its high strength, good wear resistance and resilience, nylon fiber is widely used in pure or blended clothing and knitwear, especially the blended nylon / cotton blend, which has a good hand feeling and makes the clothing more comfortable. It has good air permeability, good wear resistance and durability, and is favored by consumers. It is a medium-to-high-end raw material. [0003] Due to the organizational structure of nylon, the chemical properties of acid dyes and dyeing, in order to obtain bright colors, it is usually carried out by exhaust dyeing. Time and conditions make nylon absorb acid dyes, and the dyes can be completely absorbed to fully...

Claims

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Application Information

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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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