Nonwoven multilayer structures having nanofiber layers
US11618238B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Apr 10, 2020 |
| Grant date | Apr 4, 2023 |
| Priority date | — |
| Expiry date | Apr 25, 2041 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/016
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Nonwoven multilayer structures having at least two nanofiber layers are described herein. The nonwoven multilayer structure may have two nanofibers layers that have different properties from each other, such as fiber diameter. One nanofiber layer may be produced by an electrospinning process, while another nanofiber layer may be produced by a melt blown process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.