Composite fiberboard and process of manufacture
US5134179A · kind A · utility
82Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Oct 1, 2010 |
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 is manufactured by selective deposition of a composition of latex and extender particles on the cellulosic newsprint fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.