Self-cleaning air filtering material and preparation method therefor
US9771904B2 · kind B2 · utility
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Key dates
| Filing date | Apr 25, 2012 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Apr 3, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/0654
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided are a self-cleaning air filtering material and a preparation method therefor. The air filtering material comprises: a submicron fiber layer (2) at an inflow surface for surface filtration, a supporting area (3) for supporting and a mixed area (5) between the submicron fiber layer (2) and the supporting area (3), wherein the mixed area (5) is formed by contacting and mixing part of the fibers in the submicron fiber layer (2) and the supporting area (3) with each other during the one-step formation of the submicron fiber layer (2) and the supporting area (3) by passing through a double-layer headbox.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.