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Dyeing and finishing process of recycle polyester

A technology of recycled polyester, dyeing and finishing, applied in the field of fabric dyeing and finishing, can solve the problems of uneven dyeing, easy bursting, strength drop and so on

Active Publication Date: 2021-06-25
SHANGHAI JINTANG TEXTILE NEW MATERIALS TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process does not need to add degreaser, and does not need to use a special dyeing process. It only needs to use the dyeing process of ordinary polyester to solve the problems of blemishes, uneven dyeing, and easy bursting of recycled polyester dyeing.

Method used

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  • Dyeing and finishing process of recycle polyester
  • Dyeing and finishing process of recycle polyester
  • Dyeing and finishing process of recycle polyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Pre-treatment: immerse the recycled polyester fabric to be printed and dyed in a compound tea saponin solution at 100°C for 40 minutes, the liquor ratio is 1:5, and the compound tea saponin solution is 30g of compound tea saponin per liter of water, and wait for compounding After the tea saponin is dissolved, it is heated up to 100°C; after the treatment, it is washed with water; wherein, the compound tea saponin is Bugong tea saponin, and its composition is 1% nano-titanium oxide, tea saponin 12%, methyl cellulose 1%, natural soap powder 23%, diatomaceous earth 3%, sepiolite 6%, sodium carbonate 5%, the rest is water;

[0038] (2) Dyeing: Place the regenerated polyester fabric through the pretreatment process in the dye solution, the dyestuff is disperse dye RED S-GLF, the amount of dyestuff is 2% of the fabric weight, and the leveling agent is 2g / L (NICCASUNSOLT 7000Z, Zhejiang Rihua Chemical Co., Ltd.); prepare the dye liquor according to the weight ratio of the ...

Embodiment 2

[0044] (1) Pretreatment: With reference to Example 1, the difference from Example 1 is that the compound tea saponin includes bugong tea saponin and sodium silicate, and the consumption of sodium silicate is 40wt of bugong tea saponin %, the composition of bugong tea saponin is the same as in Example 1.

[0045] (2) dyeing: with embodiment 1.

[0046] (3) cleaning: with embodiment 1.

[0047] (4) heat setting: with embodiment 1.

[0048] (5) Napping: the same as in Example 1.

[0049] Its process flow chart is as figure 1 shown.

Embodiment 3

[0051] (1) Pretreatment: With reference to Example 1, the difference from Example 1 is that after the treatment, the waste liquid and washing waste liquid generated when the compound tea saponin is processed on the regenerated polyester fabric are also recycled, and recycled as a compound The solution used when tea saponin is used to treat recycled polyester fabrics, the process of recycling is specifically:

[0052] The waste liquid and washing waste liquid generated when compound tea saponin is used to treat polyester fabrics are recovered and filtered, and then enter the heat exchange system, and perform heat exchange with normal temperature tap water entering the heat exchange system; after heat exchange, the temperature of normal temperature tap water rises to 50 ℃, used as washing water in the pre-treatment process; the waste liquid is reduced to 50 ℃ after heat exchange, and then further condensed to 8 ℃, and then add dilute sulfuric acid with a concentration of 40vol% f...

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Abstract

The invention belongs to the technical field of fabric dyeing and finishing, and particularly relates to a dyeing and finishing process of recycle polyester. The dyeing and finishing process of the recycle polyester sequentially comprises the working procedures of pretreatment, dyeing, cleaning, heat setting and napping, wherein the pretreatment comprises the steps of firstly treating a recycle polyester fabric by using composite tea saponin, and then washing with water, wherein the composite tea saponin is Bu gong (a Chinese brand name of saponin) tea saponin. According to the method, the recycle polyester fabric is treated by the Bu gong tea saponin and then is dyed, so that the problems of defective spots, uneven dyeing and easy bursting due to strength reduction in regenerated polyester dyeing are solved. According to the method, a degreasing agent does not need to be used, a special dyeing process is not needed, and a common polyester dyeing process is adopted.

Description

technical field [0001] The invention belongs to the technical field of fabric dyeing and finishing, and in particular relates to a dyeing and finishing process of regenerated polyester. Background technique [0002] 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 the emission of carbon dioxide. It saves nearly 80% of energy compared with conventional polyester fiber production. It is a more environmentally friendly polyester fiber and is gradually recognized by the market. Has broad development prospects. Some international well-known brands have also chosen recycled polyester fibers as raw materials to develop new products for promotion. However, recycled polyester has a high oil content and high rigidity, and its strength and heat resistance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/52D06P1/44D06P1/673D06P5/00
CPCD06P3/52D06P1/445D06P1/67383D06P5/00Y02P70/62
Inventor 张志君
Owner SHANGHAI JINTANG TEXTILE NEW MATERIALS TECHCO
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