Fibre-coated filter element
US5874000A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Feb 19, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D39/1661
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter element comprising an inherently stable, porous supporting body with a finer-pored fibrous coating. According to a first aspect, the fibrous coating has first fibers which are longer than the pore size of the supporting body, and clearly shorter second fibers. According to a second aspect, less than 30% fine-grained particles are distributed in the fibrous coating. To produce the filter element the fibers are applied in the dry state by means of an air stream, an adhesive being applied before and/or after this operation. Alternatively the fibers are applied distributed in a liquid, whereby the adhesive can optionally be contained in the liquid. According to a further aspect, a coating layer consisting of fine-grained particles is applied to the fibrous coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.