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Normal-pressure dyeing method of fragrant polyester/polyurethane knitting fabric

A technique of dyeing knitted fabrics under normal pressure, which is applied in the dyeing field of polyester-spandex knitted fabrics to achieve the effect of avoiding peculiar smell and toxicity

Active Publication Date: 2013-07-10
江苏晟宏生态纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no relevant reports that vanillin is harmful to humans

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

[0017] Example 1: Use Disperse Brilliant Blue E-2BLN 3% (owf) to scratch with 30°C water, then add vanillin 12 g / L, and prepare a dye solution at a bath ratio of 30:1, and use the oil-removed Put the polyester-spandex knitted fabric into the dyeing solution, dye at 95°C for 1 hour, keep warm for 40 minutes for dyeing, then wash twice with hot water at 60°C, and wash with reducing solution composed of 2g / L hydrosulfite and 2g / L soda ash at 50°C After 30 minutes, wash twice with water, heat-set after dehydration. The K / S value of the dyed fabric is 8.135, and the soaping fastness and rubbing fastness are above 4.5.

Embodiment 2

[0018] Example 2: Use 33°C water for marking according to disperse ruby ​​SE-GFL 3% (owf), then prepare a dye liquor with 15 g / L of vanillin at a bath ratio of 40:1, and use the degreased polyester Put the ammonia knitted fabric into the dyeing solution, dye at 90°C for 50 minutes, keep warm for 45 minutes for dyeing, first wash twice with hot water at 60°C, and use a reducing solution composed of 2g / L hydrosulfite and 2g / L soda ash at 50°C for 30 minutes. Wash twice with water, dehydrate and then heat set. The K / S value of the dyed fabric is 7.281, and the soaping fastness and rubbing fastness are above grade 4.5.

Embodiment 3

[0019] Example 3: Marking with 35°C water according to Disperse Red E-3B 2% (owf), then 10 g / L of vanillin, and preparing a dye solution at a bath ratio of 40:1, and the polyester ammonia after degreasing treatment Put the knitted fabric into the dye solution, dye at 90°C for 45 minutes, keep warm for 50 minutes for dyeing, first wash twice with hot water at 60°C, and use a reducing solution composed of 2g / L hydrosulfite and 2g / L soda ash at 50°C for 30 minutes, and then Washed twice, dehydrated and then heat-set. The K / S value of the dyed fabric is 4.998, and the soaping fastness and rubbing fastness are above grade 4.5.

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 normal-pressure dyeing method of a fragrant polyester / polyurethane knitting fabric. The normal-pressure dyeing method of the fragrant polyester / polyurethane knitting fabric comprises the following steps of: A, preparing dye liquor: weighing 1-4% (owf) of disperse dye, mixing the materials by using water at 30-40 DEG C based on the bath ratio of (10-40):1, adding 10-15g / L of vanillin while stirring, and raising the temperature to 50 DEG C to prepare the dye liquor; B, dyeing: adding polyester / polyurethane fabric subjected to pretreatment in the dye liquor, raising the temperature to 90-95 DEG C at the speed of 1.5-2 DEG C / min, insulating for 40-60min and dyeing, wherein the dyeing time and insulating time are determined based on the color required, and the darker the color is, the longer the dyeing time and insulating time are; and C, after dyeing, washing the dyed polyester / polyurethane fabric with hot water at 60 DEG C for twice, then carrying out reduction cleaning by using reduction liquid at 50 DEG C for 30min, washing for twice, dehydrating and carrying out heat shaping. By using the method, the polyester / polyurethane knitting fabric has a certain aromatic property, and the damage caused by high-temperature and high-pressure dyeing as well as peculiar smell and toxicity generated when an ordinary carrier is dyed is avoided.

Description

technical field [0001] The invention relates to a method for dyeing polyester-spandex knitted fabrics, in particular to a method for dyeing aromatic polyester-spandex knitted fabrics. Background technique [0002] Polyester-spandex knitted fabrics are extremely elastic and are very popular in European and American markets. At present, the dyeing of polyester-spandex knitted fabrics mostly adopts the high-temperature and high-pressure dyeing method of disperse dyes. Under the conditions of high temperature, acid and alkali, and under the impact of liquid flow, spandex-containing fabrics are prone to aging and embrittlement, resulting in broken spandex defects, resulting in irreparable defective products. [0003] The low-temperature dyeing effect of traditional polyester fiber carriers is very good, such as wintergreen oil, expanding agent OP, expanding agent MN and other representative commercial carriers have passed long-term practice tests. But still there are some defec...

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 Applications(China)
IPC IPC(8): D06P1/16D06P1/651D06P3/85
Inventor 王春梅胡啸林缪勤华贾梦莉陈美云王海峰
Owner 江苏晟宏生态纺织科技有限公司
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