Paper making and fiber liberation – Processes and products – Pore forming in situ
Patent
1974-03-27
1976-08-10
Bashore, S. Leon
Paper making and fiber liberation
Processes and products
Pore forming in situ
106 88, 106 89, 156 628, 156 78, 162125, 162156, 162209, 162213, 264 42, 264 70, 264 87, B28B 108, B32B 526, B32B 532, B32B 3118
Patent
active
039740242
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 the two, and to an apparatus used in carrying out the process.
This invention still further relates to a process for continuously producing a laminated board by overlaying the above produced air-dispersed board on the above produced dense board, and to an apparatus used in carrying out the process.
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patent: 2913365 (1959-11-01), Osborne et al.
patent: 2928765 (1960-03-01), Kurjan
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patent: 3062670 (1962-11-01), Marzocchi et al.
patent: 3463700 (1969-08-01), Brewster et al.
patent: 3470977 (1969-10-01), Shannon
Ichikawa Kazumasa
Sasano Tetsuro
Take Takao
Yano Tsuyoshi
Bashore S. Leon
Fisher Richard V.
Onoda Cement Company, Ltd.
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