Process and apparatus for forming particulate layers
US4944843A · kind A · utility
19Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 1988 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | May 25, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F11/002
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A layer of particulate material is formed by forming a foamed dispersion of a particulate material, supplying the foamed dispersion to a predetermined zone of a plane through which a foraminous element is moving, applying a vacuum to said plane across the zone on the other side of the foraminous element, so as to drain foam and form a particulate layer thereon, removing any free air from the drained foam, and continuously recycling the resulting foam for re-use in forming the foamed particulate dispersion. An apparatus is provided for carrying out the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.