Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing high-strength minuteness viscose fiber and viscose fiber produced thereby

A viscose fiber, production method technology, applied in fiber processing, rayon made of viscose, stretch spinning, etc. The effect of high thickness, increased roundness of the outer edge, and uniform structure of the fiber

Inactive Publication Date: 2009-03-11
CHTC HELON
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a production process method of high-strength fine viscose fiber. The method is used to produce high-strength fine viscose fiber. The quality of spinning viscose is high and easy to control. Spinning bath spinning and multi-stage large-magnification drawing plasticization solve the problem of the forming process and drawing coordination during spinning, increase the thickness of the fiber skin and the roundness of the outer edge, and realize the optimization of the fine viscose fiber spinning process. Normal implementation, can be used to produce high-strength fine viscose fibers such as 0.89dtex and 0.78dtex

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment one: 0.89dtex fine viscose fiber production

[0017] 1. Preparation of alkali cellulose: impregnation, select high-quality filament cotton pulp as raw material, impregnate in 240g / 1 sodium hydroxide lye at 47°C, add denaturant LV-3 during the impregnation process, the dosage is The weight content of methyl cellulose in the raw material is 0.5%; the alkali cellulose after squeezing, crushing and aging has a cupro ammonia viscosity of 65mPa·s;

[0018] 2. Yellowing: CS 2 The addition amount is 32% (relative to the weight of methyl cellulose in alkali cellulose), the initial temperature of yellowing is 20°C, and the final temperature of yellowing is 31°C. After dissolving, filtering, and defoaming, the spinning glue is obtained. The index of spinning viscose: viscosity 50s, maturity 16ml, methylcellulose 8.0%, alkali 5.8%.

[0019] 3. Spinning: the spinning glue is filtered before spinning and enters the spinning machine, acid bath: sulfuric acid 95g / L, zinc s...

Embodiment 2

[0025] Embodiment two: 0.78dtex fine viscose fiber production

[0026] 1. Alkali cellulose preparation: impregnation, select high-quality filament cotton pulp as raw material, impregnate in 241g / l sodium hydroxide lye at 49°C, add denaturant V-32 during the impregnation process, the amount of pulp is The weight content of methyl cellulose in the raw material is 0.7%, and the alkali cellulose after squeezing, crushing and aging has a cupro ammonia viscosity of 62mPa·s;

[0027] 2. Yellowing: CS 2 The addition amount is 32% (relative to the weight of methyl fiber in alkali cellulose), the initial temperature of yellowing is 19°C, and the final temperature of yellowing is 30°C. After dissolving, filtering, and defoaming, the spinning glue is obtained. The viscosity of spinning glue is 52s, and the maturity 14ml, methylcellulose 7.9%, alkali 5.6%;

[0028] 3. Spinning: the spinning glue is filtered before spinning and enters the spinning machine, acid bath: sulfuric acid 85g / L, ...

Embodiment 3

[0034] Embodiment three: 0.78dtex fine viscose fiber production

[0035] The degree of polymerization used for raw materials is 550-600, the dynamic viscosity is 12.5±1.0mPa.s, the content of A-type cellulose is ≥95%, the ash content is ≤0.08%, the iron content is ≤18mg / kg, the whiteness is ≥80%, and the water content is 10% ±1.5% cotton pulp for high-quality filaments, the main process and technology

[0036] 1. Alkali cellulose preparation: impregnation, select high-quality filament cotton pulp as raw material, impregnate at 48 ℃, 238g / l sodium hydroxide lye, add denaturant V-32 during the impregnation process, the amount of pulp is The weight content of methyl cellulose in the raw material is 0.9%, and the alkali cellulose after squeezing, crushing and aging has a cupro ammonia viscosity of 61mPa·s;

[0037] 2. Yellowing: CS 2 The addition amount is 30% (relative to the weight of methyl fiber in alkali cellulose), the initial temperature of yellowing is 20°C, and the fina...

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
Login to View More

PUM

PropertyMeasurementUnit
degree of polymerizationaaaaaaaaaa
Ash contentaaaaaaaaaa
whitenessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing high strength fine viscose fiber and the viscose fiber prepared by the method. In order to utilize high quality cotton pulp for filament, the method adopts the following steps of dipping, pressing, crushing, aging, sulphidizing, dissolving, filtering, deaeration, spinning, extension, refining, drying and the like to preparing the high strength fine viscose fiber. The viscose fiber prepared by the method is high in quality and easy to control; by low acid, low salt, low temperature, high zinc spinning bath and multi-stage high-rate extension plasticization, the problem that the forming process is matched with the extension while spinning is solved, and the skin thickness and the outer edge spherical degree of the fiber are increased; and the prepared fiber has even structure, high fiber skin thickness and good outer edge spherical degree of the fiber, and the strength of the fiber is more than 20 percent higher than the prior product.

Description

technical field [0001] The invention relates to a viscose fiber for textiles and a manufacturing method thereof, in particular to a high-strength fine viscose fiber and a production process thereof. Background technique [0002] Fine denier and superfine fiber are differentiated fibers that have developed rapidly in recent years. They are high-quality, high-tech textile raw materials, and represent the development of chemical fibers in the direction of high-tech and high-simulation. So far, Xidan has not been clearly defined, and the opinions of various countries are also inconsistent. In Japan, fibers of 0.55 to 1.1 dtex are called fine deniers, and below 0.55 dtex are called superfines; in Europe, fibers of 1.0 to 2.4 dtex are called fine deniers, 0.3 to 1.0 dtex are called microfines, and below 0.3 dtex are called fine deniers. It is ultra-fine filament; at present, in my country, fibers around 1.0dtex are called fine denier fibers, fibers of 0.5-1.0dtex are called microf...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/06D01D5/12D01D5/00
Inventor 逄奉建王乐军刘建华马君志黄鲁姜明亮
Owner CHTC HELON