Composite fiberboard and process of manufacture
US4963603A · kind A · utility
95Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1989 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Nov 15, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/765
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A novel composite board of mineral wool, perlite, and cellulosic newsprint fibers for use primarily as a ceiling tile is disclosed. The board displays virtually no sag (less than 200 mils) when exposed to high temperature and high humidity while displaying quite acceptable strength. The board, or product without mineral wool or perlite, is manufactured by selective deposition of a latex composition on the cellulosic newsprint fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.