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One-bath dyeing-cleaning method for recycle polyester

A technology of recycled polyester and dyeing solution, which is applied in the field of textile printing and dyeing, can solve the problems of poor alkali resistance and damaged recycled polyester, and achieve ideal results, shorten the total water consumption, and shorten the total time-consuming effect

Pending Publication Date: 2021-04-02
PACIFIC (PANYU) TEXTILES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it adopts the dyeing-reduction one-bath method for cleaning, since the recycled polyester is made of recycled raw materials, its alkali resistance is relatively poor, and the dyeing-reduction one-bath method needs to add a large amount of caustic soda for cleaning under alkaline conditions , which will undoubtedly cause some damage to recycled polyester

Method used

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  • One-bath dyeing-cleaning method for recycle polyester
  • One-bath dyeing-cleaning method for recycle polyester
  • One-bath dyeing-cleaning method for recycle polyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a method for one-bath dyeing-cleaning of regenerated polyester, the method for one-bath dyeing-cleaning of regenerated polyester comprises the following steps:

[0047] (1) Put the regenerated polyester knitted fabric in the dye vat, soak it with water, add leveling agent K, dispersant P, acetic acid and dyes at 40°C to obtain a dyeing solution, and then raise the temperature at a constant rate of 1.5°C / min to 130°C, and finally insulated and dyed at a constant temperature of 130°C for 50 minutes; wherein, the bath ratio of the dyeing solution of the regenerated polyester knitted fabric is 1:10; the dyeing solution includes the following components by mass concentration: 4.1% (owf) Disperse Black ECT300%, 1.2% (owf) Disperse Dark Blue HGL200%, 0.7% (owf) Disperse Scarlet GS200%, 1.0g / L Dispersant P, 1.5g / L Leveling Agent K, 0.5g / L L of acetic acid;

[0048] (2) After the dyeing is completed, cool down to 80°C at a constant rate of 1.5°C / min, ad...

Embodiment 2

[0051] This embodiment provides a method for one-bath dyeing-cleaning of regenerated polyester, the method for one-bath dyeing-cleaning of regenerated polyester comprises the following steps:

[0052] (1) Put the regenerated polyester knitted fabric in the dye vat, soak it with water, add leveling agent K, dispersant P, acetic acid and dyes at 40°C to obtain a dyeing solution, and then raise the temperature at a constant rate of 1.5°C / min to 130°C, and finally insulated and dyed at a constant temperature of 130°C for 50 minutes; wherein, the liquor ratio of the dyeing solution of the regenerated polyester knitted fabric is 1:10; the dyeing solution includes the following components in terms of mass concentration: 3.0% (owf) Disperse Black ECT300%, 1.0% (owf) Disperse Dark Blue HGL200%, 1.0% (owf) Disperse Scarlet GS200%, 1.0g / L Dispersant P, 1.5g / L Leveling Agent K, 0.5g / L L of acetic acid;

[0053] (2) After the dyeing is completed, cool down to 80°C at a constant rate of 1....

Embodiment 3

[0056] This example provides a one-bath dyeing-cleaning method for regenerated polyester. The only difference from Example 1 is that in step (1), the temperature is raised to 130°C at a constant rate of 2.5°C / min, and other steps are the same as in Example 1. .

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Abstract

The invention provides a one-bath dyeing and cleaning method for recycle polyester. The one-bath dyeing and cleaning method for the recycle polyester comprises the following steps of (1) soaking a recycle polyester knitted fabric in a dyeing solution, and heating at a constant rate for dyeing; and (2) after dyeing is finished, cooling at a constant speed to carry out reduction cleaning, wherein areduction cleaning agent is added in the reduction cleaning process. According to the method, through a recycle polyester dyeing and reduction cleaning one-bath process flow, the total time consumption and total water consumption of dyeing and cleaning are greatly reduced, and the color stability and fastness of the obtained recycle polyester fabric are equivalent to those of a traditional two-bath process.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and relates to a one-bath dyeing-cleaning method for recycled polyester. Background technique [0002] Polyester is a polyester fiber, which is a synthetic fiber obtained by spinning polyester formed by polycondensation of dibasic acid and dibasic alcohol, and belongs to a polymer compound. Polyester has high strength, high modulus, and low water absorption, and it is widely used as civil fabrics and industrial fabrics. Polyester fabric has a smooth surface and tightly arranged internal molecules. It is the fabric with the best heat resistance among synthetic fibers and has good thermoplasticity. Recycled polyester (Recycle Polyester) refers to the polyester fiber made from waste polyester bottle flakes, crushed, cleaned, and then melt-spun. It belongs to the full use of renewable resources, which can reduce the pollution of waste to the environment and effectively reduce th...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/00D06P1/44D06P1/653D06P3/54D06P5/02
CPCD06P1/16D06P1/0032D06P1/445D06P1/6533D06P3/54D06P5/02Y02P70/62
Inventor 万俊彪王思捷皮建兵邓昱张贵秦峰黄佳唐志银李俊冯斯春梁应当
Owner PACIFIC (PANYU) TEXTILES LTD
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