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Spinning method and spinning device

a technology of spinning device and spinning method, which is applied in the direction of dry spinning method, filament/thread forming, textiles and papermaking, etc., to achieve the effect of improving spinning stability and spinning yield, continuous production, and alleviating clogging and deteriorating ejection of fiber components at the nozzle tip

Inactive Publication Date: 2020-08-27
TEIJIN PHARMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention improves the spinning process by preventing solidification of the spinning liquid at the nozzle tip. This reduces clogging and ejection issues, resulting in higher spinning stability and yield. It also allows for continuous production.

Problems solved by technology

In the electrospinning method, there is a problem that continuous production should be enabled even when a volatile solvent is used in the dope liquid.

Method used

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  • Spinning method and spinning device

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examples

[Production Equipment]

[0026]FIG. 1 is one example of an entire constitution diagram of fiber production equipment by an electrospinning method using the nozzle device of the present invention. FIG. 2 is a cross-sectional conceptual diagram of one example of the nozzle device of the present invention. In these figures, it is configured that the nozzle device consists of a nozzle and an outer tube thereof, wherein the nozzle is connected to a device for supplying a raw material solution of fibers, the outer tube is connected to a device for supplying the solvent vapor of the raw material solution, the raw material solution of fibers is ejected from the nozzle, and the vapor of a solvent of the raw material solution is released from a space between the nozzle and the outer tube so as to surround the ejected solution.

[Preparation of Polymer Solution for Spinning]

[0027]One part by weight of a polylactic acid-glycolic acid copolymer (PURAS ORB PDLG5010 manufactured by Corbion PURAC), 1 pa...

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PUM

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Abstract

A nozzle device for spinning comprising a nozzle, a polymer solution supply means that supplies a polymer solution to the nozzle and ejects the polymer solution from the nozzle tip, and a solvent vapor supply means that supplies a gas containing vapor of the same solvent as the solvent of the polymer solution at least to the vicinity of the polymer solution just ejected, and a spinning method using the nozzle device for spinning. Solidification of a spinning solution is prevented at the nozzle tip from which the spinning solution is ejected.

Description

TECHNICAL FIELD[0001]The present invention relates to a method of spinning fibers including a polymer, comprising a step of ejecting a polymer solution from a nozzle tip, in which spinning is performed while supplying a gas containing the vapor of the same solvent as a solvent of the polymer solution to the periphery of the polymer solution just ejected, and a device therefor.BACKGROUND ART[0002]In recent years, a molded body such as a sheet containing of nanofibers has been paid attention as a material having properties not possessed by a conventional fiber molded body, due to the magnitude of a specific surface area thereof. As a method of producing such nanofibers (spinning method), an electrospinning method is well known.[0003]The electrospinning method is a method of obtaining a fiber molded body on a collector by supplying a solution obtained by dissolving a polymer in a solvent (dope liquid) to a tip of a dope liquid ejection nozzle, and applying a high voltage between the no...

Claims

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Application Information

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IPC IPC(8): D01D4/02D01D5/00D01D5/04
CPCD01D5/04D01D5/0069D01D4/02
Inventor YAGURA, YASUSHIGEKUWAHARA, HIROYUKIOHMORI, GAKU
Owner TEIJIN PHARMA CO LTD