发明申请
- 专利标题: DISTRIBUTION OF STARCH IN COMPOSITION OF BUILDING PRODUCTS
- 专利标题(中): 建筑产品组合物的分布
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申请号: US13621406申请日: 2012-09-17
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公开(公告)号: US20130081554A1公开(公告)日: 2013-04-04
- 发明人: Bangji Cao
- 申请人: USG Interiors, LLC
- 申请人地址: US IL Chicago
- 专利权人: USG Interiors, LLC
- 当前专利权人: USG Interiors, LLC
- 当前专利权人地址: US IL Chicago
- 主分类号: C08L3/00
- IPC分类号: C08L3/00 ; C08L1/00 ; B05D7/00
摘要:
Building panels such as ceiling tiles have compositions including starch as a binder and a coagulant for the starch. The building panels also can include a fibrous material and a filler. In one aspect, the starch is coagulated by the coagulant resulting in the starch being distributed substantially uniformly through a thickness of the building panels, whereby certain physical properties of the building panels and a wet-felting process for manufacturing the building panels are improved. The coagulant can comprise at least one aluminum salt. In the wet-felting process for manufacturing the ceiling tiles, a slurry comprising an aqueous dispersion of at least one fibrous material, at least one filler material, at least starch as a binder and a coagulant for the starch is delivered onto a foraminous wire frame. The slurry is dewatered to form a basemat and the basemat is dried to remove any residual moisture.