Fiber manufacturing method, non-woven fabric manufacturing method, and fiber manufacturing equipment
US10052807B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2016 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Apr 22, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/62
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A fiber manufacturing method includes the following steps of: dissolving a polymer in a solvent to obtain a polymer solution; spraying the polymer solution into a liquid heated to a boiling point of the solvent or higher, and evaporating the solvent to precipitate a fibrous polymer in a sealed precipitation tank, the liquid being immiscible with the polymer and the solvent; conveying the precipitated fibrous polymer in a liquid from the precipitation tank; water-rinsing the fibrous polymer conveyed in the liquid in the conveying step in a sealed water-rinsing tank; conveying the water-rinsed fibrous polymer in a liquid from the water-rinsing tank; and cooling and condensing solvent gas that is generated in the spraying step and the water-rinsing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.