Method for producing heavy-denier mucilage glue flat yarn

A flat filament and viscose technology, applied in wet spinning, filament generation, rayon cleaning/drying, etc., can solve the problem that the strength and elongation of coarse denier flat filaments are limited, and the recycling of carbon disulfide is not realized. , The strength and elongation of the coarse denier flat wire meet the requirements, so as to achieve the effect of enhancing the continuity of the process, reducing manual participation and continuous process.

Active Publication Date: 2014-02-26
YIBIN GRACE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Coarse denier flat yarn will produce pollutants such as carbon disulfide due to chemical reaction during the solidification and molding process, and these pollutants are directly discharged at high altitude through the exhaust system on the production equipment, causing great pollution to the surrounding environment, and there is no Realize the recovery and recycling of carbon disulfide, resulting in the waste of carbon disulfide and the increase of production cost
[0008] All of them use a coagulation bath to treat the flat yarn, but a coagulation bath cannot make the strength and elongation of the coarse denier flat yarn meet the requirements, which has limitations in improving the strength and elongation of the coarse denier flat yarn, which is not convenient Downstream market development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of viscose

[0031] The prepared viscose nail fiber content is 8.9%, the viscosity is 48 seconds, and the maturity is measured in NH 4 The CL is 9.5ml, the alkali content is 4.7%, the temperature is 17°C, and there are less than 25 small bubbles.

[0032] One-time solidification molding

[0033] The viscose is fed into the candle filter through the action of the metering pump and the swing rod, and is fed into the spinneret by the action of the gooseneck after being filtered by the candle filter, and the spinneret is placed in the first coagulation In the bath, the viscose is sprayed through the spinneret and then enters the first coagulation bath for primary coagulation and molding. In the one-step solidification molding, carbon disulfide is recovered.

[0034] The primary coagulation forming coagulation bath includes sulfuric acid, sodium sulfate and zinc sulfate, wherein the content of sulfuric acid is 115 g / l, the content of sodium sulfate is 320 g / l, the cont...

Embodiment 2

[0049] Preparation of viscose

[0050] The prepared viscose nail fiber content is 8.9%, the viscosity is 43 seconds, and the maturity is measured in NH 4 The CL is 9.0ml, the alkali content is 4.7%, the temperature is 18°C, and there are less than 25 small bubbles.

[0051] One-time solidification molding

[0052] The viscose is fed into the candle filter through the action of the metering pump and the swing rod, and after being filtered by the candle filter, it is fed into the spinneret through the action of the gooseneck, and the spinneret is placed in the first solidification In the bath, the viscose is sprayed through the spinneret and then enters the first coagulation bath for primary coagulation and molding. In the one-step solidification molding, carbon disulfide is recovered.

[0053] The primary coagulation forming coagulation bath includes sulfuric acid, sodium sulfate and zinc sulfate, wherein the content of sulfuric acid is 118g / l, the content of sodium sulfate is 300g / l...

Embodiment 3

[0068] Preparation of viscose

[0069] The prepared viscose nail fiber content is 9.0%, the viscosity is 46 seconds, and the maturity is NH 4 The CL is 9.1ml, the alkali content is 4.8%, the temperature is 18°C, and there are less than 25 small bubbles.

[0070] One-time solidification molding

[0071] The viscose is fed into the candle filter through the action of the metering pump and the swing rod, and is fed into the spinneret by the action of the gooseneck after being filtered by the candle filter, and the spinneret is placed in the first coagulation In the bath, the viscose is sprayed from the spinneret and then enters the first coagulation bath for primary coagulation and molding. In the one-step solidification molding, carbon disulfide is recovered.

[0072] The primary coagulation forming coagulation bath includes sulfuric acid, sodium sulfate and zinc sulfate, wherein the content of sulfuric acid is 118g / l, the content of sodium sulfate is 295g / l, the content of zinc sulfa...

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PUM

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Abstract

The invention relates to a method for producing heavy-denier mucilage glue flat yarn. The method includes the steps that mucilage glue is pumped into a candle type filter through a metering pump to be filtered, the filtered mucilage glue enters a yarn spraying nozzle through a goose neck to be sprayed into yarn, sprayed yarn enters a primary coagulating bath groove to undergo primary solidification forming, then, the yarn is guided to a secondary solidification forming groove through a yarn guiding mechanism to undergo secondary solidification forming, the yarn enters a washing groove to undergo primary washing after the secondary solidification forming is conducted, the yarn is laid on a conveying net of a united refiner in parallel to undergo regeneration, washing, desulfuration, blanching, pH value adjustment, oiling and drying after the primary washing is conducted, finally, the yarn is formed to be in a cylinder shape or a strand shape, and carbon disulfide is recycled in the primary solidification forming process and the secondary solidification forming process of the yarn. The carbon disulfide is recycled, the strength and the elongation of the heavy-denier mucilage glue flat yarn produced through the process completely meet the requirements, and the method is quite beneficial for development of downstream markets.

Description

Technical field [0001] The invention relates to the field of viscose fiber production, in particular to a production process of flat yarns. Background technique [0002] Flat yarn concentrates the excellent properties of ordinary Vicat fiber and hemp fiber, the fabric is smooth, elastic and soft, rich in three-dimensionality, comfortable and pleasant; and has the characteristics of moisture absorption and heat dissipation, and easier to dye. [0003] The application number is 200610021657.1, and the publication date of the Chinese invention patent application on March 5, 2008 discloses a super coarse denier flat yarn and its preparation method. The disclosed preparation method includes the preparation of color paste, deep maturation, and the maturation time is 12 ~15 hours, the maturation degree is 8.0±1.0ml, defoaming, spinning by spinning machine, washing and drying into a tube. The method can obtain 10-20 monofilaments, a monofilament fiber degree of 60-120D, and a twist of 90-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/06D01D10/06D01D11/00
Inventor 邓传东李蓉玲贺敏李春弟杨传杰
Owner YIBIN GRACE
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