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PH value neutralization method of mercerized dyed shell fabric

A PH value, fabric technology, applied in dyeing, textiles and papermaking, etc., can solve the problems of inability to smell on the surface of fabrics, reduce fabric neutralization costs, expensive organic acids, increase fabric neutralization costs, etc., to reduce neutralization costs and labor costs, reduce neutralization costs, and improve neutralization effects

Inactive Publication Date: 2019-01-22
ZHEJIANG MIZUDA TEXTILE PRINTING & DYEING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, manufacturers neutralize this kind of fabrics by neutralizing them with glacial acetic acid or organic acids. However, due to the strong smell of glacial acetic acid, some odors will remain after neutralization, thereby reducing the quality of fabrics and user experience.
Although the method of neutralizing with organic acid can avoid the peculiar smell of the cloth after neutralization, but because the cost of organic acid is expensive, its cost is twice that of glacial acetic acid, which leads to the increase of cloth dyeing cost and poor applicability
In addition, glacial acetic acid or organic acids will produce polluting waste liquid after neutralization, so that manufacturers need to purify the neutralized waste liquid before discharging, and clean the additive cartridge, so as to further Increased neutralization cost for cloth
Therefore, the existing neutralization method for mercerized cloth cannot reduce the neutralization cost of cloth while removing the peculiar smell on the cloth surface

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. A kind of PH value neutralization method of mercerized dyeing fabric, comprises the following steps:

[0018] ① Put carbon dioxide at 15~30m 3 Charge it into water at a rate of 1-4 MPa to make carbon dioxide and water react to form carbonic acid under a high-pressure environment of 1-4 MPa. The pH value of carbonic acid after generation is 4-6, and A carbonic acid is obtained;

[0019] ② Fill the carbonic acid A into the washing tank first, then completely immerse the fabric in the carbonic acid A for neutralization. During the neutralization process, the carbonic acid A temperature is 25-40°C, and the neutralization time is 25-35 seconds to obtain the finished fabric.

[0020] The inlet pressure of the carbon dioxide in the step ① is 4-8 MPa when it is charged.

[0021] In the step ②, the water hardness of carbonic acid A is 75-150PPM when it is neutralized.

[0022] In the step ②, the pH value of the cloth before neutralization is 11-12, and the pH value...

Embodiment 2

[0025] Example 2. A kind of PH value neutralization method of mercerized dyeing fabric, comprises the following steps:

[0026] ① Put carbon dioxide at 15m 3 Charge it into water at a rate of / h, so that carbon dioxide and water react to form carbonic acid under a high-pressure environment of 1MPa. The inlet pressure of carbon dioxide is 4MPa when charging, and the pH value of carbonic acid after generation is 6, and A carbonic acid is obtained;

[0027] ②Put A carbonic acid into the washing tank first, then completely immerse the cloth in A carbonic acid for neutralization. Before the cloth is immersed in A Keep it at 30-35° C., and the neutralization time is 35 seconds. The water hardness of A carbonic acid is 75PPM when it is neutralized, and the finished fabric is obtained.

[0028] In the step ②, the pH value of the cloth before neutralization is 11, and the pH value of the cloth after neutralization is 9.

[0029] In this embodiment, corresponding process parameters a...

Embodiment 3

[0030] Example 3. A kind of PH value neutralization method of mercerized dyeing fabric, comprises the following steps:

[0031] ① Put carbon dioxide at 30m 3 Charge it into water at a rate of / h, so that carbon dioxide and water react to form carbonic acid under a high-pressure environment of 4MPa. The inlet pressure of carbon dioxide is 8MPa when charging, and the pH value of carbonic acid after generation is 4, and A carbonic acid is obtained;

[0032] ②Put A carbonic acid into the washing tank first, then completely immerse the cloth in A carbonic acid for neutralization. Before the cloth is immersed in A carbonic acid, spray cold water at 25°C on the surface of the cloth to make the temperature of A Keep it at 25-30° C., and the neutralization time is 25 seconds. The water hardness of A carbonic acid is 150 PPM when it is neutralized, and the finished fabric is obtained.

[0033] In the step ②, the pH value of the cloth before neutralization is 12, and the pH value of th...

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Abstract

The invention discloses a pH value neutralization method of a mercerized dyed shell fabric. The method comprises the following steps of firstly, charging water with carbon dioxide at the rate of 15m<3> / h to 30m<3> / h so as to subject carbon dioxide and water to a reaction in a high-pressure environment of 1MPa to 4MPa to produce carbonic acid and enable a pH value of the produced carbonic acid to be 4 to 6, then, charging a rinsing bath with the carbonic acid so as to completely submerge a fabric into the carbonic acid for neutralization, thereby obtaining the finished fabric, wherein the temperature of the carbonic acid during neutralization is 25 DEG C to 40 DEG C, and the neutralization time is 25 to 35 seconds. According to the method, the neutralization cost of the fabric can be reduced while surface off odors are removed from the fabric.

Description

technical field [0001] The invention relates to a method for neutralizing a fabric, in particular to a method for neutralizing the pH value of a mercerized dyed fabric. Background technique [0002] In the dyeing process of mercerized fabrics, there will be residual alkali agents produced by color fixing, oxidation and other processes. It needs to be neutralized with acid to reduce the alkalinity of the fabric, so that the fabric will have a neutral or weakly acidic pH after dyeing. At present, manufacturers neutralize this kind of fabrics by neutralizing them with glacial acetic acid or organic acids. However, due to the strong smell of glacial acetic acid, some odors will remain after neutralization, thereby reducing the quality of fabrics and user experience. . And though the mode of neutralizing by organic acid can avoid the peculiar smell of cloth after neutralization, because the cost of organic acid is expensive, its cost is twice that of glacial acetic acid, thereby...

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): D06P5/04
CPCD06P5/04
Inventor 卢国栋
Owner ZHEJIANG MIZUDA TEXTILE PRINTING & DYEING TECH CO LTD
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