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HIGH DENSITY POLYURETHANE AND POLYISOCYANURATE CONSTRUCTION BOARDS AND COMPOSITE BOARDS
专利权人:
FIRESTONE BUILDING PRODUCTS CO., LLC
发明人:
BRANDT Gregory A.,LETTS John B.
申请号:
US201715830624
公开号:
US2018087277(A1)
申请日:
2017.12.04
申请国别(地区):
美国
年份:
2018
代理人:
摘要:
A covered roof includes a roof deck, an insulation board, and a coverboard. The insulation board includes a polyurethane, a polyisocyanurate, or a mix of polyurethane and polyisocyanurate cellular structure, has a density that is less than 2.5 pounds per cubic foot, and has a first planar surface and a second planar surface, each having a facer positioned adjacent thereto. The coverboard includes a polyurethane, a polyisocyanurate, or a mix of polyurethane and polyisocyanurate cellular structure, has a density greater than about 2.5 pounds per cubic foot and less than 6 pounds per cubic foot, an iso index of at least 175, and a first planar surface and a second planar surface, each having a facer positioned adjacent thereto.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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