Method for incorporating ultraviolet radiation protection and antimicrobial protection into rayon
US10676861B1 · kind B1 · utility
1Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2019 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Nov 8, 2039 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2200/25
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for incorporating ultraviolet radiation protection and antimicrobial protection into rayon has the steps of providing pulp to form cellulose sheets, steeping the cellulose sheets, pressing the cellulose sheets, shredding the cellulose sheets into white crumb, aging the white crumb to form yellow crumb, xanthation of the yellow crumb, dissolving the yellow crumb to form a viscose, adding an additive to the viscose, ripening the viscose, filtering the viscose, degassing the viscose, spinning the viscose to form a filament of rayon, drawing the rayon, washing the rayon, and cutting the rayon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.