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Method for producing coarse denier viscose flat yarn

A technology of flat yarn and viscose, which is applied in the direction of wet spinning, filament generation, artificial filament cleaning/drying, etc. It can solve the limitation of the strength and elongation of coarse denier flat filaments, and the recovery and recycling of carbon disulfide is not realized. , thick denier flat yarn strength, elongation meet the requirements and other issues, to achieve the effect of enhanced process continuity, reduced manual participation, and continuous process

Active Publication Date: 2016-04-06
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 methylcellulose content is 8.9%, the viscosity is 48 seconds, and the degree of maturity is expressed as NH 4 Cl is 9.5mL, the alkali content is 4.7%, the temperature is 17°C, and the number of small bubbles is less than 25.

[0032] One solidification molding

[0033] The viscose is sent into the candle filter through the action of the metering pump and the pendulum, and then sent into the spinneret through the action of the gooseneck after being filtered by the candle filter, and the spinneret is placed in the first solidification In the bath, the viscose is sprayed out from the spinneret and enters the first solidification bath for one-time solidification and molding. During primary solidification and 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 115g / L, the content...

Embodiment 2

[0049] preparation of viscose

[0050] The prepared viscose methylcellulose content is 8.9%, the viscosity is 43 seconds, and the maturity is expressed as NH 4 Cl is 9.0mL, the alkali content is 4.7%, the temperature is 18°C, and the number of small bubbles is less than 25.

[0051] One solidification molding

[0052] The viscose is sent into the candle filter through the action of the metering pump and the pendulum, and then sent into the spinneret through the action of the gooseneck after being filtered by the candle filter, and the spinneret is placed in the first solidification In the bath, the viscose is sprayed out from the spinneret and enters the first solidification bath for one-time solidification and molding. During primary solidification and 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...

Embodiment 3

[0068] preparation of viscose

[0069] The prepared viscose methylcellulose content is 9.0%, the viscosity is 46 seconds, and the maturity is expressed as NH 4 Cl is 9.1mL, the alkali content is 4.8%, the temperature is 18°C, and the number of small bubbles is less than 25.

[0070] One solidification molding

[0071] The viscose is sent into the candle filter through the action of the metering pump and the pendulum, and then sent into the spinneret through the action of the gooseneck after being filtered by the candle filter, and the spinneret is placed in the first solidification In the bath, the viscose is sprayed out from the spinneret and enters the first solidification bath for one-time solidification and molding. During primary solidification and 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...

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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 yarn. Background technique [0002] Flat yarn combines the excellent properties of ordinary Vicat fiber and hemp fiber. The fabric is smooth, elastic and soft, rich in three-dimensionality, comfortable and pleasant; it has the characteristics of moisture absorption and heat dissipation, and is easier to dye. [0003] The application number is 200610021657.1, and the Chinese invention patent application published on March 5, 2008 discloses a super-coarse denier flat yarn and its preparation method. The disclosed preparation method includes preparation of color paste, deep aging, and the aging time is 12 ~15 hours, ripening degree 8.0±1.0mL, defoaming, spinning with spinning machine, washing with water, drying into cylinder. The method can obtain 10-20 single filaments, 60-120D single-filament fiber degree and 90-110 mills per meter twist. Usin...

Claims

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Application Information

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Patent Type & Authority Patents(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