Filament production device

Patent metadata

Field	Value
Publication number	US-11198952-B2
Application number	US-201816046180-A
Country	US
Kind code	B2
Filing date	Jul 26, 2018
Priority date	Feb 12, 2016
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

A filament production device, in particular a filament reaction-spinning production device, comprising at least one spinning nozzle unit, which is provided for producing at least one filament formed as a hollow fibre membrane from at least one polymer solution, and comprising a polymerisation unit, which is provided for initiating a polymerisation of the polymer solution, wherein the polymerisation unit is provided for initiating the polymerisation at least partially within the spinning nozzle unit.

First claim

The invention claimed is:

1. A filament production device, comprising at least one spinning nozzle unit, which is provided for producing at least one filament, which is formed as a hollow fibre membrane, from at least one polymer solution, and comprising a polymerisation unit, which is provided for initiating a polymerisation of the at least one polymer solution at least partially within the spinning nozzle unit; wherein the spinning nozzle unit has at least one inner fluid channel, which is provided for guiding an inner fluid, and has at least one polymer solution channel, which is provided for guiding the at least one polymer solution, wherein the polymer solution channel surrounds the at least one inner fluid channel at least partially in at least one cross-section; and wherein the polymerization unit comprises at least one irradiation unit for applying electromagnetic radiation only to the inner fluid in the at least one inner fluid channel, wherein the at least one irradiation unit comprises a radiation-guiding element extending at least partially into the at least one inner fluid channel for coupling the electromagnetic radiation only into the at least one inner fluid channel.

2. The filament production device according to claim 1 , wherein the spinning nozzle unit has at least one further polymer solution channel, wherein the polymer solution channel and the at least one further polymer solution channel are provided for guiding different polymer solutions.

3. The filament production device according to claim 1 , wherein the spinning nozzle unit comprises at least one channel, and the polymerisation unit comprises at least one feed unit, which is provided for feeding a polymerisation initiator to the at least one channel of the spinning nozzle unit.

4. The filament production device according to claim 1 , wherein the polymerisation unit has a temperature-control unit, which is provided for applying heat energy at least to the at least one polymer solution for initiating polymerisation.

5. The filament production device according to claim 1 , wherein a control unit, which is provided for controlling the polymerisation unit for selective initiation of the polymerisation.

6. The filament production device of claim 1 , comprising a filament reaction-spinning production device.

7. A filament production method, with a filament production device having at least one spinning nozzle unit, wherein the spinning nozzle unit has at least one inner fluid channel, which is provided for guiding an inner fluid, and has at least one polymer solution channel, which is provided for guiding at least one polymer solution, wherein the polymer solution channel surrounds the at least one inner fluid channel at least partially in at least one cross-section, wherein at least one filament, which is formed as a hollow fibre membrane, is produced by the spinning nozzle unit from the at least one polymer solution, the method comprising at least partially initiating polymerization within the spinning nozzle unit by applying electromagnetic radiation along a radiation guiding element extending at least partially into the at least one inner fluid channel to apply the electromagnetic radiation to only to the inner fluid in the at least one inner fluid channel.

8. The filament production method of claim 7 , comprising a reaction-spinning production method.

Assignees

• Pall Corp

Inventors

• Oechsle Dietmar
• Dahlberg Christian
• Mueller Erik
• Wietschorke Werner
• Key Steffen

Classifications

• B01D69/0871

  Fibre guidance after spinning through the manufacturing apparatus · CPC title

• B29L2031/755

  Membranes, diaphragms · CPC title

• D01D5/38 Primary

  Formation of filaments, threads, or the like during polymerisation · CPC title

• B29C48/297

  at several locations, e.g. using several hoppers or using a separate additive feeding · CPC title

• B29C48/10

  flexible, e.g. blown foils · CPC title