Unfixed yarn and pressure drying method thereof

A pressure and yarn technology, applied in the field of unfixed yarn and its pressure drying, can solve the problems of uneven dyeing, migration, color spots, etc., and achieve the effect of ensuring production quality, excellent quality, and no migration

Active Publication Date: 2019-06-28
GUANGDONG ESQUEL TEXTILES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the energy consumption of traditional pressure drying is lower than that of high frequency, for unfixed yarns (that is, yarns that have not been treated with a fixing agent after the dyeing process, usually light-colored yarns), during the drying process There will be defect quality problems such as swimming and color circles, which will appear as uneven dyeing and stains on the cloth surface

Method used

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  • Unfixed yarn and pressure drying method thereof
  • Unfixed yarn and pressure drying method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment is a pressure drying method for unfixed yarns. The unfixed yarns are yarns obtained directly without fixing or other post-processing after the conventional dyeing process, using a THIES pressure dryer Pressure drying includes the following steps:

[0027] (1) Obtain the unfixed yarn and squeeze water. The process of squeezing the water is as follows: at a temperature of 90° C. and a pressure of 4.7 Bar, the unfixed yarn is squeezed for 10 minutes; In this process, the fan power is below 100%, the temperature difference at T1 is 0, and the temperature difference at T2 is below 40°C.

[0028] (2) Pre-drying the yarn after squeezing water. The pre-drying process is: pre-drying for 30 minutes at a temperature of 90°C and a pressure of 4.7 Bar; in this process, the fan power is 100 % Or less, T1 temperature difference is 0, T2 temperature difference is 40°C or less.

[0029] (3) Dry the pre-dried yarn. The drying process is: drying for 70 minutes at a temperature ...

Embodiment 2

[0033] This embodiment is a pressure drying method for unfixed yarns. The unfixed yarns are yarns that have not undergone fixation treatment after a conventional dyeing process, and are pressure-dried using a THIES pressure dryer, including The following steps:

[0034] (1) Obtain the unfixed yarn and squeeze water. The process of squeezing the water is as follows: at a temperature of 80° C. and a pressure of 4.7 Bar, the unfixed yarn is squeezed for 10 minutes; In this process, the fan power is below 100%, the temperature difference at T1 is 0, and the temperature difference at T2 is below 40°C.

[0035] (2) Pre-drying the yarn after squeezing water. The pre-drying process is: pre-drying for 40 minutes at a temperature of 95°C and a pressure of 4.7 Bar; in this process, the fan power is 100 % Or less, T1 temperature difference is 0, T2 temperature difference is 40°C or less.

[0036] (3) Dry the pre-dried yarn. The drying process is: at a temperature of 100°C and a pressure of 4.7...

Embodiment 3

[0040] This embodiment is a pressure drying method for unfixed yarns. The unfixed yarns are yarns that have not undergone fixation treatment after a conventional dyeing process, and are pressure-dried using a THIES pressure dryer, including The following steps:

[0041] (1) Obtain unfixed yarns and squeeze water. The process of squeezing water is as follows: at a temperature of 60°C and a pressure of 4.7 Bar, the unfixed yarns are squeezed for 20 minutes; In this process, the fan power is below 100%, the temperature difference at T1 is 0, and the temperature difference at T2 is below 40°C.

[0042] (2) Pre-dry the yarn after squeezing water. The process of pre-drying is: pre-drying for 40 minutes at a temperature of 85°C and a pressure of 4.7 Bar; in this process, the fan power is 100 % Or less, T1 temperature difference is 0, T2 temperature difference is 40°C or less.

[0043] (3) Dry the pre-dried yarn. The drying process is: drying for 60 minutes at a temperature of 105°C and a ...

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Abstract

The invention relates to unfixed yarn and a pressure drying method thereof. The method comprises the following steps that the unfixed yarn is obtained and subjected to the procedures of water squeezing, predrying, drying and cooling. According to the pressure drying method of the unfixed yarn, the process parameters of water squeezing, predrying and drying in the pressure drying process are reasonably controlled, water in the unfixed yarn can be evenly evaporated in time, the problem of defects is avoided, and the yarn on the inner layer can be fast dried thoroughly. Thus, the production quality of the yarn is guaranteed, meanwhile, energy consumption is effectively reduced, and the production efficiency is improved.

Description

Technical field [0001] The invention relates to a yarn printing and dyeing process, in particular to an unfixed yarn and a pressure drying method thereof. Background technique [0002] The drying stage in the yarn printing and dyeing process is a high-power process, and the process control of the drying stage will also affect the yarn quality. [0003] Yarn drying is mainly divided into high frequency drying, pressure drying, hot air drying, etc. according to the type of dryer; according to the type of yarn, it is divided into cheese yarn drying and loose yarn drying. At present, the drying of high-frequency package yarn requires about 500-600KW.h / t yarn, and the drying of pressure package yarn requires about 300-400KW.h / t yarn. [0004] Although the energy consumption of traditional pressure drying is lower than that of high frequency, for unfixed yarns (that is, yarns that are not added with fixing agent for post-treatment after the dyeing process, usually light-colored yarns), du...

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 Patents(China)
IPC IPC(8): D06B15/00D06P5/02
CPCD06B15/00D06P5/02
Inventor 吴晓刚袁彩妮韩金朝王振清
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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