发明名称 |
COMPOSITE LIGHT WEIGHT GYPSUM WALLBOARD |
摘要 |
<p>The invention provides a light weight composite gypsum board including a foamed low density set gypsum core, a top non-foamed (or reduced-foamed) bonding high density layer and a bottom non-foamed (or reduced-foamed) bonding high density layer, a top cover sheet bonded to the foamed low density set gypsum core by the top non-foamed (or reduced-foamed) bonding high density layer, and a bottom cover sheet bonded to the foamed low density set gypsum core by the bottom non-foamed (or reduced-foamed) bonding high density layer. The foamed low density set gypsum core is prepared having a density of less than about 30 pcf using soap foam in the gypsum-containing slurry. The combination of components provide a composite gypsum board having light weight and high strength.</p> |
申请公布号 |
EP2081763(A4) |
申请公布日期 |
2014.03.19 |
申请号 |
EP20070837466 |
申请日期 |
2007.08.29 |
申请人 |
UNITED STATES GYPSUM COMPANY |
发明人 |
YU, QIANG;SONG, WEIXIN, DAVID |
分类号 |
B32B13/00;B32B13/02 |
主分类号 |
B32B13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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