Spinneret assembly for composite spinning and manufacturing method for a biomass composite fiber implementing the same

Patent metadata

Field	Value
Publication number	US-10731275-B2
Application number	US-201816027360-A
Country	US
Kind code	B2
Filing date	Jul 4, 2018
Priority date	Dec 14, 2017
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

The present application provides a manufacturing method and a spinneret assembly that includes a nozzle body, an outer spinning solution channel formed inside the nozzle body, and at least one inner spinning solution channel formed inside the nozzle body. A nozzle outlet formed at an end of the nozzle body is immersed in a solidification liquid. The outer spinning solution channel includes an outer liquid outlet, and the at least one inner spinning solution channel includes an inner liquid outlet. The outer liquid outlet and the inner liquid outlet communicate with the nozzle outlet and are confluent at the nozzle outlet. A diameter of the inner liquid outlet is smaller than a diameter of the outer liquid outlet. An outer-layer dope spinned from the outer liquid outlet covers an inner-layer dope spinned from the inner liquid outlet so as to generate a solid filamentary fiber with multi-layer materials.

First claim

What is claimed is:

1. A spinneret assembly for composite spinning, the spinneret assembly comprising:
a nozzle body, a nozzle outlet being formed at an end of the nozzle body, the nozzle outlet being immersed in a solidification liquid completely;
an outer spinning solution channel formed inside the nozzle body, the outer spinning solution channel comprising an outer liquid outlet communicated with the nozzle outlet; and
at least one inner spinning solution channel formed inside the nozzle body, the at least one inner spinning solution channel comprising an inner liquid outlet communicated with the nozzle outlet;
wherein the outer liquid outlet and the inner liquid outlet are confluent at the nozzle outlet, a diameter of the inner liquid outlet being smaller than a diameter of the outer liquid outlet, and an outer-layer fiber formed from an outer-layer dope spinned from the outer liquid outlet covers an inner-layer fiber formed from an inner-layer dope spinned from the inner liquid outlet so as to generate a solid filamentary fiber with multi-layer materials.

2. The spinneret assembly of claim 1 , wherein the nozzle body is made of stainless steel.

3. The spinneret assembly of claim 1 , wherein the solidification liquid is an aqueous calcium chloride solution.

4. The spinneret assembly of claim 1 , wherein the outer-layer fiber is made of alginate.

5. The spinneret assembly of claim 1 , wherein the inner-layer fiber is made of chitin or collagen.

6. A manufacturing method for a biomass composite fiber, the method comprising:
providing the spinneret assembly of claim 1 , the spinneret assembly communicating with a feeding bucket, the nozzle outlet of the nozzle body being immersed in the solidification liquid in a solidification tank;
providing at least two biomass spinning solutions in the feeding bucket for allowing the spinneret assembly to generate the solid filamentary fiber with the multi-layer materials in the solidification tank;
transporting the solid filamentary fiber in the solidification tank to a cleaning tank for cleaning;
transporting the cleaned solid filamentary fiber to a heating roller apparatus for heating; and
coiling the solid filamentary fiber with a coiling apparatus.

7. The manufacturing method of claim 6 , wherein the solidification liquid is an aqueous calcium chloride solution.

8. The manufacturing method of claim 6 , wherein the biomass spinning solutions is made of at least one of alginate and chitin and collagen.

9. The manufacturing method of claim 6 , further comprising cleaning the solid filamentary fiber with a cleaning liquid made of at least one of water and ethanol and stored in the cleaning tank.

10. The manufacturing method of claim 6 , further comprising heating the cleaned solid filamentary fiber with a heating temperature of the heating roller apparatus lower than or equal to 50° C.

Assignees

• Nat Chung Shan Inst Science & Tech

Inventors

• Chien Sywe-Bin
• Liu Hung-Sung
• Shieh Rong-Jinn

Classifications

• D01D5/06 Primary

  Wet spinning methods {(D01D5/0046 takes precedence)} · CPC title

• D01F9/04

  of alginates · CPC title

• D01F4/00

  Monocomponent artificial filaments or the like of proteins; Manufacture thereof · CPC title

• D01D5/34

  Core-skin structure; Spinnerette packs therefor · CPC title

• D01F9/00

  Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments · CPC title