Process for the formation of fiber felt containing an additional product
US4950444A · kind A · utility
61Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1988 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Oct 21, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G24/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The production of mineral fiber felt into which an additional product is introduced. The felt is made partly of freshly formed fibers and partly of recycled fibers which are conveyed into a receiving chamber in which the felt is formed. The additional product is introduced with the recycled fibers. One advantageous application includes applying a surface active agent to the recycled edges to form a supporting material for hydroponic culture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.