Structural sandwich plate members
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United States of America Patent
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Issued Date -
Sep 21, 2006
app pub date -
Mar 10, 2004
filing date -
Mar 18, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A structural sandwich plate member comprises first and second outer plates and a core of plastics or polymer material. A plurality of lightweight forms are disposed between the outer plates so that the core material forms ribs extending in two substantially orthogonal directions. The lightweight forms are formed of a fire resistant insulating material, such as mineral wool, preferably surrounded by a barrier to prevent the insulating material being soaked by the liquid form of the plastics or polymer material during injection of the core. The barrier may take the form of a hollow tube in which the insulating material is placed or a coating applied by dipping or spraying or a sheet material such as metal foil, felt, mineral cloth, etc.
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