An extruded polymeric foam comprising a styrenic polymer and an olefinic polymer, the olefinic polymer in an amount less than the amount of the styrenic polymer. The styrenic polymer and the olefinic polymer are present as a blend, preferably free of an interpolymer or compatiblizer. The foam has a density below about 36 kg/m^ (as measured by ASTM 01622-03), a vertical compressive strength greater than about 100 kPa (as measured by ASTM D1621-04) and a compressive strength ratio greater than about 0.35.
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机译：包含苯乙烯类聚合物和烯烃类聚合物的挤出聚合物泡沫，该烯烃类聚合物的量小于苯乙烯类聚合物的量。苯乙烯聚合物和烯烃聚合物以混合物形式存在，优选不含互聚物或相容剂。泡沫具有低于约36kg / m 2的密度（通过ASTM 01622-03测量），垂直压缩强度大于约100kPa（通过ASTM D1621-04测量）和压缩强度比大于约0.35。
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