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One-bath two-step scouring and dyeing method of reactive dye of cotton knitting fabric and cotton yarn

A technology of reactive dyes and cotton knitted fabrics, applied in dyeing, textiles and papermaking, can solve the problems of large differences in scouring temperature and achieve the effects of shortening scouring and dyeing time, reducing sewage discharge, and reducing production costs

Inactive Publication Date: 2010-12-08
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used reactive dyes have a large difference between the fixation temperature and the scouring temperature (such as 60-65°C for reactive dyes such as B type and 80-90°C for reactive dyes such as K type), and the dyeing alkali agent is soda ash or alkali substitute ( pH value is around 11.5)

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

[0055] Embodiment 1: light-colored (1.0% dyestuff consumption) dyeing:

[0056] (1) Dyeing formula:

[0057] Dosage of M-type reactive dyes (to fabric weight) 1.0%

[0058] Yuanmingfen 30g / L

[0059] Multifunctional Color Fixing Soda HS-310J 2.5g / L

[0060] Bath ratio 1:15

[0061] (2) Dyeing process:

[0062] At room temperature, add water, run the fabric, add dyes, add sodium sulfate and multi-functional color fixing base, add enough water——40 minutes to heat up to 60°C——after 30 minutes of heat preservation, 30 minutes to heat up to 95°C——after 30 minutes of heat preservation, wash with water , soaped, washed.

[0063] (3) Process description:

[0064] In the dyeing process, the addition of sodium sulfate acts as a dyeing accelerator, improving the dyeing and fixation rate of the dye. However, if the dosage is too high, it will easily cause color and flower phenomenon, so the light color is generally about 30-40g / L. The addition of multifunctional color-fixing alkal...

Embodiment 2

[0065] Embodiment 2: Medium depth (3% of dyestuff consumption) dyeing:

[0066] (1) Dyeing formula:

[0067] B-type reactive dye dosage (to yarn weight) 3%

[0068] Yuanmingfen 50g / L

[0069] Penetrant HS-118B 1.0g / L,

[0070] Scouring agent HS-117 1.0g / L,

[0071] Soda ash 10g / L,

[0072] Bath ratio 1:10

[0073] (2) Dyeing process:

[0074] At room temperature, add water, run the yarn, add dye, add sodium sulfate, add penetrating agent, scouring agent, soda ash, add enough water——35min to raise the temperature to 60℃——after holding for 35min, then 25min to raise the temperature to 95~98℃— — After keeping warm for 40 minutes, wash with water, soap and boil, and wash with water.

[0075] (3) Process description:

[0076] In the dyeing process, the addition of sodium sulfate acts as a dyeing accelerator, improving the dyeing and fixation rate of the dye. However, if the dosage is too high, it is easy to cause color and flower phenomenon, so the medium color is generall...

Embodiment 3

[0077] Embodiment 3: deep color (5.0% of dyestuff consumption) dyeing:

[0078] (1) Dyeing formula:

[0079] Dosage of KN type reactive dyes (to fabric weight) 5%

[0080] Salt 70g / L

[0081] Multifunctional Color Fixing Soda HS-310J 3.5g / L

[0082] Bath ratio 1:8

[0083] (2) Dyeing process:

[0084] At room temperature, add water, run the fabric, add dyes, add salt and multi-functional color fixing alkali, add enough water——30 minutes to heat up to 65°C——after 40 minutes of heat preservation, 20 minutes to heat up to 95°C—after 40 minutes of heat preservation, wash with water, soap Boil and wash.

[0085] (3) Process description:

[0086] The addition of salt in the dyeing process also plays a role in promoting dyeing and improving the dyeing and fixation rate of dyes. Therefore, the dark color is generally about 70-80g / L. The addition of multi-functional color-fixing alkali has two major functions: one is to provide an alkali agent. The addition of alkali is benefic...

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 discloses a one-bath two-step scouring and dyeing method of reactive dye of cotton knitting fabric and cotton yarn. The formula thereof is as follows: 1.0 to 10 percent of reactive dye of B, M and KN type or K, KD and KE type (fabric or yarn weight), 30 to 100 g / L of sodium sulfate or salt, 2.5 to 3.5g / L of multifunctional color-fixing alkali with the bath ratio of 1:6 to 15; or 1.0to 10 percent of reactive dye of B, M and KN type and K, KD and KE type, 30 to 100 g / L of sodium sulfate or salt, 0.5 to 1.0g / L of penetrating agent, 1.0 to 2.0g / L of refining agent, 10 to 15g / L of pure alkali with the bath ratio of 1:6 to 15. The scouring and dyeing process is as follows: cotton knitting fabric or cotton yarn, two-temperature scouring and dyeing (dyeing with the temperature of 60 to 65 DEG C or 80 to 90 DEG C and refining with the temperature of 95 to 98 DEG C), soaping, washing and finishing. The method improves yield, simultaneously reduces the using amount of water by about 30 percent when in scouring and dyeing, reduces production cost, reduces the discharge of sewage and is beneficial to environmental protection.

Description

technical field [0001] The invention relates to a one-bath two-step scouring and dyeing method for cotton knitted fabrics and cotton yarn reactive dyes. Background technique [0002] Cotton (which is cellulose fiber) knitted fabrics and cotton yarns generally require pretreatment (also known as scouring) before dyeing, the purpose of which is to remove impurities on the fabric or yarn. These impurities include non-cellulose substances in cotton fibers (pectin, wax and protein on cotton fibers) and pulp, sticky dirt, oil stains, etc. that may be present during the weaving process. If these impurities are not removed (not scouring or the scouring effect is poor), the dyeing effect will be affected, and problems such as color stains, color spots, and dyeing brightness will easily occur. Therefore, the factory currently adopts the processing method of scouring first and then dyeing. [0003] Cotton knitted fabrics and yarns are currently mostly dyed with reactive dyes. Reactiv...

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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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/38D06P3/66
Inventor 王光明章健健王成龙贾青陈琼张向南
Owner ZHEJIANG SCI-TECH UNIV