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Semi-continuous centrifugal spinning process

A centrifugal spinning, semi-continuous technology, applied in the direction of wet spinning, artificial filament made of viscose, etc., can solve the problem of spinning three filaments at the same time, achieve reliable spinning, good quality of silk cake, and dyeing effect good effect

Active Publication Date: 2007-12-12
YIBIN GRACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the current semi-continuous centrifugal spinning process cannot directly spin three filaments on one spindle at the same time under the condition of satisfying the quality of the silk cake. To achieve the goal of three filaments in one spindle, the process must be greatly improved.

Method used

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Examples

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Effect test

Embodiment 1

[0020] A semi-continuous centrifugal spinning process, one spindle position and three filaments travel, the process includes glue making, viscose metering, filtration, spinning, coagulation bath, acid scraping, filament drafting, filament coagulation, filament removal Acid, silk cake winding molding.

[0021] The larger particles in the viscose are filtered before spinning; viscose metering adopts three independent metering units; after metering, the smaller particles in the metered viscose are filtered through a candle filter; each spindle position is equipped with three spinnerets , so that the sprayed viscose reacts with the acid bath respectively; the acid bath in the acid bath solidifies the viscose sprayed from the spinneret into a single filament; The acid bath is drained to one side; after scraping the acid, the filaments are drawn from the positive and negative drafting discs to the coagulation rollers, and the filaments continue to coagulate and react, and the filame...

Embodiment 2

[0023] A semi-continuous centrifugal spinning process, one spindle position and three filaments travel, the process includes glue making, viscose metering, filtration, spinning, coagulation bath, acid scraping, filament drafting, filament coagulation, filament removal Acid, silk cake winding molding:

[0024] A. In the glue making process, the degree of viscose maturity is NH 4 The Cl value is controlled at 8.8-13ml, the surface tension is 40-52dny, the number of bubbles is ≤25 / 500ml, and the particle number of the viscose is controlled at ≤100 / ml viscose after three filters (IIIF) and candle filters. Below 10μm;

[0025] B. In the coagulation bath process, the viscose is ejected from the spinneret and reacts with the acid bath to form filaments. The temperature of the acid bath is 52-55°C, and the concentration of sulfuric acid in the acid bath is (132-136) g / l, sodium sulfate The concentration is (220-265) g / l, the surface tension of acid bath is less than that of viscose,...

Embodiment 3

[0029] A semi-continuous centrifugal spinning process, in the glue making process, viscose maturity N 4 The HCl value is 11ml, the surface tension is 48dny, the number of bubbles is ≤25 / 500ml, and the viscose is filtered through three stages (IIIF), and the number of particles after the candle filter is controlled below 100 / 10μm per ml of viscose.

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Abstract

The invention discloses the semi-continuous centrifugal spinning technology, comprising the following steps: three strand silks on one ingot, 1 in making glue procedure, viscose ripening between 8.8-13ml, interfacial force between 40-52dny, bubble below 25 / 500ml, thrice filtering, controlling candle filter particle population above 100 / 10 mum; 2 in coagulating bath procedure, glue from spinneret with acid bath forming strand silk, the acid bath temperature between 52-55Deg.C, hydric sulphate concentration between 132-136 g / l, sodium sulfate concentration between 220-265g / l, acid bath interfacial force being less than glue interfacial force, and acid bath specific density being below 1.265g / ml. Using the method meets the requirement for quality, and reaches the spinning three silks on every ingot at the same time.

Description

Technical field: [0001] The invention relates to the field of viscose filament production, in particular to a semi-continuous centrifugal spinning process for simultaneously spinning three filaments on one spindle of a semi-continuous centrifugal spinning machine. Background technique: [0002] Present such as R535A, R535B semi-continuous centrifugal spinning machine, according to its standard installation manual, each spindle spinning surface is originally designed to install a metering pump and a spinneret, the utilization efficiency of the equipment is low, and the production cost is high. When expanding the production scale, it can only be solved by increasing the number of equipment, which requires a large investment, a large floor area, and many related supporting facilities. [0003] A Chinese patent discloses a "semi-continuous centrifugal spinning machine with multiple centrifugal cylinders per spindle and its control structure" (patent number 00245222.7) and "singl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/06D01F2/06
Inventor 冯涛邓传东张仁友陈玉贵刘廷聪李蓉玲
Owner YIBIN GRACE
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