CN101046064A

CN101046064A - Dyeing process for elastic polyester-polyurethane fabric

Info

Publication number: CN101046064A
Application number: CN 200710068104
Authority: CN
Inventors: 毛中水
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-13
Filing date: 2007-04-13
Publication date: 2007-10-03

Abstract

The dyeing process for elastic polyester-polyurethane fabric includes one dyeing step and one reducing and cleaning step. The dyeing step using disperse dye, ammonium acetate and dyeing assistant is performed in certain bath ratio and at certain temperature. The reducing and cleaning step using sodium hydrosulfite, sodium hydroxide and cleaning assistant is performed in certain bath ratio. The dyeing process can dye polyester component well at low temperature dyeing condition, and has well dyeing on polyurethane component and high color fastness.

Description

Dyeing process for elastic polyester-polyurethane fabric

Technical field

The present invention relates to a kind of dyeing process for elastic polyester-polyurethane fabric.

Background technology

Have higher elasticity and excellent rebound performance owing to contain the fabric of elastic spandex fiber, soft, wear comfortable, and can show the body good shape of coming in and going out, thereby more and more used, and the production technology of polyester fibre/spandex composite fibre, be the production that turns to high value added product from conventional products, it is bigger to wash ammonia stockinette market development potentiality, but because the existence of spandex, injury-free for fear of the spandex performance, the high-temp dyeing of terylene is restricted, and low temperature dyeing often makes DISPERSE DYES can not dye terylene well thoroughly, the dye-uptake and the enhancing rate of terylene component are not all well embodied, simultaneously, because the design feature of spandex is dyed spandex on DISPERSE DYES is easy, also desorb easily simultaneously, so reduced every COLOR FASTNESS of this series products, think the total quality that improves this series products, seek a kind of processing method of this series products.Solve the problems referred to above, apparent by being important.

Summary of the invention

In order to address the above problem, the object of the present invention is to provide a kind of dyeing process for elastic polyester-polyurethane fabric, can make the terylene component under the low temperature dyeing condition, have dyeing preferably, lighter to dying on the spandex again, have every preferably COLOR FASTNESS preferably simultaneously to dying on the spandex in other words.

For reaching above-mentioned purpose, the present invention adopts following technical scheme:

A kind of dyeing process for elastic polyester-polyurethane fabric comprises dyeing and reduction cleaning technology, and described dyeing adopts: DISPERSE DYES, ammonium acetate, dyeing assistant, dyeing under certain bath raio and uniform temperature; Described reduction cleaning process using: sodium dithionite (sodium hydrosulfite), NaOH, cleaning additive, reduction cleaning under certain bath raio.

Described dyeing adopts: the DISPERSE DYES consumption is the 0.1-5% of fabric weight, and the ammonium acetate of 0.1-2g/L is regulated the pH value, the dyeing assistant of 0.1-2g/L, and bath raio is 5: 1-50: 1; Temperature is 100-130 ℃; Described reduction cleaning process using: the sodium dithionite of 0.1-3g/L, the NaOH of 0.1-3g/L, the cleaning additive of 0.1-3g/L, bath raio is 5: 1-50: 1.

Described DISPERSE DYES is a kind of in low temperature DISPERSE DYES, the middle temperature DISPERSE DYES.

Described dyeing assistant is for disperseing a kind of in dye leveller, the chelated dispersants.

The pH value is adjusted to 4-6 in the described dyeing.

Cleaning additive mainly is surfactant-based cleaning additive in the described reduction cleaning technology, a kind of in soaping agent, the spirit of deoiling, the soda acid sodium hydrosulfite.

Terylene and spandex all belong to hydrophobic fibre, and DISPERSE DYES all can be to dying on this two component, but because terylene is different with the chemical composition and the micro-structural of spandex inside, and both are all inequality to the affinity of DISPERSE DYES, have to dye characteristic on different separately.At low thermophase, DISPERSE DYES is dyed the spandex component on mainly, along with temperature rise to 110 ℃ after, the dye-uptake of spandex component begins to descend, and transfers to the terylene component and gets on, and the dye-uptake of terylene component improves gradually, after 130 ℃, along with dyeing time increases, DISPERSE DYES is still in the transfer that takes place from spandex to the terylene component, till balance.

Because the architectural characteristic of spandex, DISPERSE DYES is dyed on easily the spandex component, show higher dye-uptake, though the ratio of spandex in stockinette not high (only accounting for 10%), but when being incubated 40 minutes for 130 ℃, dye on the DISPERSE DYES on the spandex component than accounting for about 0.5, present the higher phenomenon of being infected with.This part dyestuff the time is easy to desorb from the fiber in washing, causes the decline of COLOR FASTNESS quality.

Different DISPERSE DYES, because its chemical constitution difference, so to dye on terylene and the spandex also embody different affinity and on dye characteristic, in order to improve the COLOR FASTNESS quality of fabric, DISPERSE DYES of the present invention has been selected for use dying lighter DISPERSE DYES kind on the spandex component, in the employing, the DISPERSE DYES of low temperature.

Surfactant and different carriers; DISPERSE DYES is dyed the influence that also has to a certain degree on terylene and spandex two components, the adding of some auxiliary agent can increase DISPERSE DYES and dye on the spandex component; but the adding of some auxiliary agent; dye on the meeting reduction spandex component, the auxiliary agent that the present invention is used can reduce on the one hand and wash the mixed fine coloration of textile materials temperature of ammonia; the performance of protection spandex is injury-free; on the other hand, the reduction DISPERSE DYES is infected with spandex, improves fabric COLOR FASTNESS quality.

Reduction cleaning can effectively reduce being infected with of DISPERSE DYES on the spandex component, promotes the desorb of DISPERSE DYES on the spandex on the one hand, and to the migration of reduction cleaning liquid, can prevent also that on the other hand DISPERSE DYES in the cleaning fluid is to the contamination again of spandex.

The invention has the beneficial effects as follows: through this colouring processing method, make the terylene component under the low temperature dyeing condition, have dyeing preferably, lighter to dying on the spandex again, have every preferably COLOR FASTNESS preferably simultaneously to dying on the spandex in other words, to improve and to improve a COLOR FASTNESS, Color and quality.The products obtained therefrom variable color fastness 4-5 level of soaping; Various 4 grades of the staining fastnesses soaped; Light fastness 4-5 level; The elastic-restoring force loss is less than 4.3%; Ultimate strength: warp-wise 2420 newton, broadwise 1710 newton.And do not have extra sewage discharge in process of production, all auxiliary agents all are environmental protection in the production, and the auxiliary agent overwhelming majority that newly increases use all is adsorbed onto on the fiber, and are seldom residual in water, so do not produce new environmental pollution.

The specific embodiment

Embodiment 1

Dyeing process for elastic polyester-polyurethane fabric, comprise dyeing and reduction cleaning technology, the dyeing materials that present embodiment adopts are: the low temperature DISPERSE DYES, consumption is 0.1% of a fabric weight, it is 4 that the ammonium acetate of 2g/L is regulated the pH value, 0.1g/L the dispersion dye leveller help as dyeing, bath raio is 50: 1, temperature is 100 ℃; The sodium dithionite of reduction cleaning process using: 3g/L, the NaOH of 0.1g/L, the soaping agent of 0.1g/L be as cleaning additive, and bath raio is to finish under 5: 1 the condition to wash ammonia stockinette dyeing processing technique.

Embodiment 2

Dyeing process for elastic polyester-polyurethane fabric, comprise dyeing and reduction cleaning technology, the dyeing materials that present embodiment adopts are: middle temperature DISPERSE DYES consumption is 3% of a fabric weight, it is 4.5 that the ammonium acetate of 1g/L is regulated the pH value, the chelated dispersants of 2g/L is as dyeing assistant; bath raio is 15: 1, and temperature is 115 ℃; The sodium dithionite of reduction cleaning process using: 2g/L, the NaOH of 2g/L, the soda acid sodium hydrosulfite of 1g/L be as cleaning additive, and bath raio is to finish under 15: 1 the condition to wash ammonia stockinette dyeing processing technique.

Embodiment 3

Dyeing process for elastic polyester-polyurethane fabric, comprise dyeing and reduction cleaning technology, the dyeing materials that present embodiment adopts are: middle temperature DISPERSE DYES consumption is 5% of a fabric weight, 0.1g/L ammonium acetate regulate the pH value and be, the dispersion dye leveller of 2g/L is as dyeing assistant; bath raio is 5: 1, and temperature is 130 ℃; The sodium dithionite of reduction cleaning process using: 0.1g/L, the NaOH of 3g/L, the spirit of deoiling of 3g/L is as cleaning additive, and bath raio is to finish under 50: 1 the condition to wash ammonia stockinette dyeing processing technique.

Claims

1, a kind of dyeing process for elastic polyester-polyurethane fabric comprises dyeing and reduction cleaning technology, it is characterized in that: described dyeing adopts DISPERSE DYES, ammonium acetate, dyeing assistant, dyes under certain bath raio and uniform temperature; Reduction cleaning process using sodium dithionite, NaOH, cleaning additive, reduction cleaning under certain bath raio.

2, a kind of dyeing process for elastic polyester-polyurethane fabric according to claim 1, it is characterized in that: described dyeing adopts: the DISPERSE DYES consumption is the 0.1-5% of fabric weight, 0.1-2g/L ammonium acetate regulate the pH value, 0.1-2g/L dyeing assistant; bath raio is 5: 1-50: 1, temperature is 100-130 ℃; The sodium dithionite of reduction cleaning process using: 0.1-3g/L, the NaOH of 0.1-3g/L, the cleaning additive of 0.1-3g/L, bath raio is 5: 1-50: 1.

3, a kind of dyeing process for elastic polyester-polyurethane fabric according to claim 2 is characterized in that: described DISPERSE DYES is a kind of in low temperature DISPERSE DYES, the middle temperature DISPERSE DYES.

4, a kind of dyeing process for elastic polyester-polyurethane fabric according to claim 2 is characterized in that: described dyeing assistant is for disperseing a kind of in dye leveller, the chelated dispersants.

5, a kind of dyeing process for elastic polyester-polyurethane fabric according to claim 2, it is characterized in that: the pH value is adjusted to 4-6 in the described dyeing.

6, a kind of dyeing process for elastic polyester-polyurethane fabric according to claim 2 is characterized in that: cleaning additive mainly is surfactant-based cleaning additive in the described reduction cleaning technology, a kind of in soaping agent, the spirit of deoiling, the soda acid sodium hydrosulfite.