Process for producing board of cement-like material reinforced by glass fiber
US3974024A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1974 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Mar 27, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B5/027
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a process for continuously producing a dense board of cement-like material reinforced by glass fiber, which comprises (1) preparing a slurry of cement-like material; (2) simultaneously spraying the cement-like slurry and short lengths of glass fiber on a suction conveyor in such a manner that the cement-like slurry stream and the glass fiber stream intersect on the suction conveyor to form a dense mat of an intimate mixture of the two; and (3) dehydrating the mat by pulse-like intermittent suction using one or more suction boxes before the cement-like material begins to set, and to an apparatus used in carrying out the process. This invention further relates to a process for continuously producing a light board of air-dispersed cement-like material reinforced by glass fiber, which comprises (1) preparing a slurry of cement-like material having air dispersed therein; and (2) simultaneously spraying the air-dispersed cement-like slurry and short lengths of glass fiber on a conveyor belt in such a manner that the air-dispersed cement-like slurry stream and the glass fiber stream intersect on the conveyor to form an air-dispersed mat of an intimate mixture of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.