The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1976
Filed:
Mar. 27, 1974
Tsuyoshi Yano, Tokyo, JA;
Kazumasa Ichikawa, Koganei, JA;
Takao Take, Mitako, JA;
Tetsuro Sasano, Chiba, JA;
Onoda Cement Company, Ltd., , JA;
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.