Method for manufacturing mask pack for adsorbing heavy metals, and mask pack manufactured thereby
US11771204B2 · kind B2 · utility
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1References
14Claims
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Key dates
| Filing date | Dec 11, 2018 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Dec 5, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H13/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Provided are a method for manufacturing a mask pack for heavy metal adsorption comprising immersing a cellulose nonwoven fabric in an alkali solution by a cold pad batch method and then aging the cellulose nonwoven fabric at room temperature for 10 minutes to 50 minutes, and immersing the cellulose nonwoven fabric in a carboxymethylation solution by the cold pad batch method and then aging the cellulose nonwoven fabric at room temperature to 60° C. for 10 minutes to 3 hours, and a mask pack for heavy metal adsorption manufactured by the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.