Solid mask and preparation method therefor
US11357710B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2020 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Sep 26, 2040 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F4/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a solid mask and a preparation method thereof. The solid mask includes a hydrophobic substrate layer and a nanofiber layer, the nanofiber layer has a three-dimensional structure and is electro-spun onto the hydrophobic substrate layer through uniaxial electrostatic spinning technology, and the nanofiber layer is prepared by the following food-grade raw materials in parts by mass: 10 to 30 parts of gelatin, 1 to 30 parts of soya bean lecithin and 0.1 to 10 parts of a functional substance. The present invention provides a solid mask, using gelatin and soya bean lecithin as the framework. The nanofiber layer is a three-dimensional laminate made of fibers having a diameter of a few hundred nanometers. The nanofiber layer has a membrane structure similar to the extracellular matrix. The raw materials of the solid mask are all food-grade raw materials or natural extracts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.