Phenol resin foamed plate
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United States of America Patent
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May 22, 2018
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app pub date -
Oct 17, 2011
filing date -
Oct 18, 2010
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Abstract
A phenol resin foamed plate contains hydrocarbon and/or chlorinated aliphatic hydrocarbon, in which an average cell diameter is in a range of 5 μm or more and 200 μm or less, a void area ratio is 5% or less in its cross section, a density is 15 kg/m3 or more and 26 kg/m3 or less, and when compression is made by a 10% displacement in a direction perpendicular to the thickness direction, a recovery rate 1 minute after release of this compression is 96.0% or more and 98.5% or less and a degree of change in recovery rates C is 0.030%/hr or more and 0.060%/hr or less.
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