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Dyeing method of cotton type polyester staple fibers produced from PET bottom cut pieces

A polyester staple fiber and dyeing method technology, which is applied in the dyeing field of cotton-type polyester staple fiber, can solve problems such as not being able to be used for spinning, uneven strength, and unsuitability, etc., to reduce water hardness, improve product performance, and eliminate clean effect

Inactive Publication Date: 2015-09-09
微山县南四湖再生资源利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, using the traditional dyeing method to dye short fibers with thick fillers, due to the thicker fibers and uneven strength, they cannot be used for spinning;
The original traditional dyeing method is not suitable for dyeing cotton-type polyester staple fiber produced from PET bottle flakes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for dyeing cotton-type polyester staple fibers produced by PET bottle flakes, is characterized in that, specifically comprises the steps:

[0032] One-bath and one-step method of pretreatment dyeing, bath ratio 1:5;

[0033] Dyeing steps: add recycled polyester staple fiber—add additives—add alkali-resistant disperse dyes—dyeing heating—dyeing heat preservation—washing—soaping—washing;

[0034] Auxiliary prescription:

[0035] Soda ash agent 25g / L

[0036] Uniform penetrant GL 0.59g / L

[0037] Chelating dispersant DF101 0.8g / L

[0038] Dye Recipe:

[0039] H-3BN red 15g / L

[0040] H-2RW Yellow 5g / L

[0041] H-2BN blue 8g / L

[0042] Heating process: room temperature—90°C (heating at 2-3°C / min)—128-132°C (heating at 1°C / min)

[0043] Dyeing time:

[0044] 1 hour holding time;

[0045] Every fastness index of the fiber that above-mentioned embodiment dyes:

[0046] Original change: 3-4 grades, white stains: 4 grades, dry rubbing: 4 grades, wet rubbing: ...

Embodiment 2

[0048] Utilize the dyeing method of the cotton-type polyester staple fiber that a kind of PET bottle flake material produces, when dyeing 1.67dtex cotton-type polyester staple fiber, its dyeing process is as follows:

[0049] One-bath and one-step method of pretreatment dyeing, bath ratio 1:6;

[0050] Dyeing steps: add recycled polyester staple fiber—add additives—add alkali-resistant disperse dyes—dyeing heating—dyeing heat preservation—washing—soaping—washing;

[0051] Auxiliary prescription:

[0052] Soda ash agent 30g / L

[0053] Uniform penetrant GL 0.59g / L

[0054] Chelating dispersant DF101 0.9g / L

[0055] Dye Recipe:

[0056] HA=BR dark blue 25g / L

[0057] HA-2RW Yellow 17g / L

[0058] HA-B Magenta 14g / L

[0059] Heating process: room temperature—90°C (heating at 2-3°C / min)—128-132°C (heating at 1°C / min)

[0060] Dyeing time:

[0061] 1 hour holding time;

[0062] Every fastness index of the fiber that above-mentioned embodiment dyes:

[0063] Original change: ...

Embodiment 3

[0065] Utilize the dyeing method of the cotton-type polyester staple fiber that a kind of PET bottle flake material produces, when dyeing 1.67dtex cotton-type polyester staple fiber, its dyeing process is as follows:

[0066] One-bath and one-step method of pretreatment dyeing, bath ratio 1:7;

[0067] Dyeing steps: add recycled polyester staple fiber—add additives—add alkali-resistant disperse dyes—dyeing heating—dyeing heat preservation—washing—soaping—washing;

[0068] Auxiliary prescription:

[0069] Soda ash agent 35g / L

[0070] Uniform penetrant GL 0.61g / L

[0071] Chelating dispersant DF101 1.1g / L

[0072] Dye Recipe:

[0073] HA=BR dark blue 20g / L

[0074] H-2BN blue 8g / L

[0075] HA-2RW Yellow 10g / L

[0076] Heating process: room temperature—90°C (heating at 2-3°C / min)—128-132°C (heating at 1°C / min)

[0077] Dyeing time:

[0078] 1 hour holding time;

[0079] Every fastness index of the fiber that above-mentioned embodiment dyes:

[0080] Original change: 3...

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PUM

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Abstract

The invention discloses a dyeing method of cotton type polyester staple fibers produced from PET bottom cut pieces. The dyeing method is characterized by specifically comprising the following steps: a, selecting an alkali-resisting disperse dye and grinding until the fineness reaches 2 microns, b, adopting a pretreatment dyeing one-bath-one-step process, firstly, adding regenerated polyester staple fibers to a dye jar, dissolving a pure alkali agent, an even penetrating agent GL and a chelating dispersant DF101 according to a dyeing bath ratio of 1: (5-7) and putting into the dye jar, and adding the alkali-resisting disperse dye to obtain mixed dye liquor; C, regulating the pH value to the range of 13-14, gradually increasing the temperature to the range of 128-132 DEG C and preserving heat for 1 hour; and D, performing water washing, soap boiling and water washing on the dyed fibers, thereby finishing dyeing. The dyeing method is used for solving the problem of uneven dyeing of the cotton type polyester staple fibers produced from the PET bottom cut pieces; small-batch and multi-variety production is realized, the requirements of market variety diversification are met, the process time is greatly shortened, the yield is improved, the environment can be protected, the dye-uptake can be above 90%, the color fastness is high and the usability of the products is improved.

Description

technical field [0001] The invention belongs to the technical field of dyeing polyester staple fibers, and relates to a method for dyeing polyester staple fibers, in particular to a method for dyeing cotton-type polyester staple fibers produced from PET bottle flakes. Background technique [0002] The traditional method of dyeing polyester staple fiber is high temperature and high pressure dyeing with traditional disperse dyes. The dyeing is characterized by previous treatment for impurity removal, high temperature and high pressure dyeing, two-bath method, more water, and uneven dyeing of recycled polyester staple fibers. The specific process is pretreatment of raw materials to remove impurities-high temperature and high pressure dyeing-washing-soaping-washing-drying. The disadvantages are high cost, long production process, high water consumption and high energy consumption. For this reason, people are actively looking for a method for dyeing polyester staple fibers with ...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/673D06P3/54D06L1/16
Inventor 郭利王敦海
Owner 微山县南四湖再生资源利用有限公司
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