Invention Grant
- Patent Title: Multi-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels
- Patent Title (中): 用于生产高强度纤维增强结构水泥板的多层工艺和设备
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Application No.: US12133657Application Date: 2008-06-05
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Publication No.: US07789645B2Publication Date: 2010-09-07
- Inventor: Ashish Dubey , Joe W. Chambers , Aaron Greengard , Alfred C. Li , D. Paul Miller , Michael J. Porter
- Applicant: Ashish Dubey , Joe W. Chambers , Aaron Greengard , Alfred C. Li , D. Paul Miller , Michael J. Porter
- Applicant Address: US IL Chicago
- Assignee: United States Gypsum Company
- Current Assignee: United States Gypsum Company
- Current Assignee Address: US IL Chicago
- Agency: Greer, Burns & Crain, Ltd.
- Agent David F. Janci, Esq.; Pradip Sahu, Esq.
- Main IPC: B29C39/20
- IPC: B29C39/20 ; B29C70/06

Abstract:
A structural cementitious panel, produced by a multi-layer process including providing a moving web; b. one of depositing a first layer of loose fibers upon the web and c. depositing a layer of settable slurry upon the web; d. depositing a second layer of loose fibers upon the slurry; e. embedding said second layer of fibers into the slurry; and f. repeating steps c. through e. until the desired number of layers of settable fiber-enhanced slurry in the panel is obtained. Also provided are an apparatus suitable for producing structural cementitious panels according to the present process, and a structural cementitious panel having multiple layers, each layer created by depositing a layer of settable slurry upon a moving web, depositing fibers upon the slurry and embedding the fibers into the slurry such that each layer is integrally formed with the adjacent layers.
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