Method of maintaining a low residue open-cell felted foam
US5562876A · kind A · utility
3Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1995 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | May 10, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Open-Cell urethane foam is thoroughly dried in a convection oven or controlled atmosphere and then compressed with heat to a felt immediately. Alternatively, the dried foam is sealed in a plastic bag until the felting step. The amount of non-volatile residue is significantly reduced to produce a foam for use to contain ink in an ink jet cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.