A Simultaneous Dyeing Process of Nylon and Spandex

A technology of spandex and nylon, applied in dyeing method, textile and papermaking, etc., can solve the problems of uncolored spandex and unsatisfactory color fastness, and achieve the effect of ensuring the fastness to wet treatment

Active Publication Date: 2016-06-22
ZHEJIANG MENGNA SOCKS & HOSIERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the color fastness of nylon and spandex is not ideal and the spandex is not colored, we have proposed a process for dyeing nylon and spandex at the same time. The invention can achieve the simultaneous coloring of nylon and spandex and the same shade. Purpose, to overcome the defects of spandex dewy and shiny

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A process for simultaneously dyeing nylon and spandex, the steps are as follows:

[0025] (1) Pre-dyeing: put the product into the dyeing vat, control the pH value to 4.7, and the temperature at 30°C, add 2g / L spandex colorant to the dye bath, and heat up at a rate of 2°C until the dye bath temperature reaches 50°C. Cycle for 20 minutes;

[0026] (2) Dyeing: Cool down at a rate of 2°C until the temperature of the dyeing bath reaches 30°C, add 0.1g / L dye to the dye vat to dye spandex, then add 1.5g / L nylon dye, control the temperature to 30°C, cycle 5 minute;

[0027] (3) Auxiliary dyeing: Add auxiliary agents to the dyeing vat, control the temperature at 30°C, circulate for 5 minutes, then raise the temperature at a rate of 2°C per minute until the temperature of the dyeing bath reaches 100°C, and keep warm for 30 minutes;

[0028] (4) Check the sample until the color is accurate, wash it out of the tank, dry it, and fix the color.

Embodiment 2

[0030] A process for simultaneously dyeing nylon and spandex, the steps are as follows:

[0031] (1) Pre-dyeing: put the product into the dyeing vat, control the pH value to 4.7, and the temperature at 30°C, add 3g / L spandex colorant to the dye bath, and heat up at a rate of 2°C until the dye bath temperature reaches 50°C. Cycle for 20 minutes;

[0032] (2) Dyeing: Cool down at a rate of 2°C until the temperature of the dyeing bath reaches 30°C, add 0.15g / L dye to the dye vat to dye spandex, then add 1.5g / L nylon dye, control the temperature to 30°C, cycle 5 minute;

[0033] (3) Auxiliary dyeing: Add auxiliary agents to the dyeing vat, control the temperature at 30°C, circulate for 5 minutes, then raise the temperature at a rate of 2°C per minute until the temperature of the dyeing bath reaches 100°C, and keep warm for 30 minutes;

[0034] (4) Check the sample until the color is accurate, wash it out of the tank, dry it, and fix the color.

Embodiment 3

[0036] A process for simultaneously dyeing nylon and spandex, the steps are as follows:

[0037] (1) Pre-dyeing: put the product into the dyeing vat, control the pH value to 4.7, and the temperature at 30°C, add 4g / L spandex colorant to the dye bath, and heat up at a rate of 2°C until the dye bath temperature reaches 50°C. Cycle for 20 minutes;

[0038] (2) Dyeing: Cool down at a rate of 2°C until the temperature of the dyeing bath reaches 30°C, add 0.2g / L dye to the dye vat to dye spandex, then add 1.5g / L nylon dye, control the temperature to 30°C, cycle 5 minute;

[0039] (3) Auxiliary dyeing: Add auxiliary agents to the dyeing vat, control the temperature at 30°C, circulate for 5 minutes, then raise the temperature at a rate of 2°C per minute until the temperature of the dyeing bath reaches 100°C, and keep warm for 30 minutes;

[0040] (4) Check the sample until the color is accurate, wash it out of the tank, dry it, and fix the color.

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PUM

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Abstract

The invention relates to a process of simultaneously dying chinlon and spandex. The process comprises the following processes: pre-dyeing; dyeing; carrying out assistant-dyeing; comparing samples; taking out of a cylinder and washing; drying; fixing color; and adding a polyurethane dyeing agent to simultaneously dye chinlon and spandex. The process provided by the invention has the advantages that chinlon and spandex are simultaneously dyed at a time; the chroma and the elasticity of chinlon and spandex can be ensured when chinlon and spandex are same in color, and the spandex wet-processing fastness is ensured.

Description

technical field [0001] The invention relates to the field of fabric dyeing, in particular to a process for simultaneous dyeing of nylon and spandex. Background technique [0002] Nylon is nylon. Nylon fiber is widely used as a material for socks, stretch shirts, etc. due to its good strength and toughness, excellent wear resistance and resilience. The coloring of ordinary spandex is generally done by disperse dyes or adding color masterbatches when it is formed into silk. The negative effects of these two are that it brings about unsatisfactory elasticity and fastness. Dyeing nylon and spandex in the same bath often results in deep coloring of nylon but spandex Without coloring, the visual effect of the product is very poor and cannot be put into the market. [0003] Chinese patent CN102660878B discloses a modified polyester / nylon / spandex multi-component seamless underwear one-bath dyeing process, which is refined and degreased in the same bath, washed with hot water, soape...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/39D06P1/00D06P3/87
Inventor 张晓平丁淑英
Owner ZHEJIANG MENGNA SOCKS & HOSIERY
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