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    • 1. 发明授权
    • Method for treating expandable polymer materials
    • 处理可膨胀聚合物材料的方法
    • US06616876B1
    • 2003-09-09
    • US09678765
    • 2000-10-03
    • Roger LabrecqueJoseph FerraroTom SwanickPaul Martakos
    • Roger LabrecqueJoseph FerraroTom SwanickPaul Martakos
    • B29B1110
    • A61F2/06
    • The invention is directed to methods involving rewetting of expandable polymers with a wettable liquid to allow for enhanced expansion at or below room temperature without breakage, and in some cases, allows one to achieve a greater expansion ratio than that allowed at elevated temperatures using known methods. The present invention also allows one to achieve material with unique properties and handling characteristics. These properties included decreased material thickness, increased density, an altered node/fibril morphology, and a more consistent web in the case of flat material. This method is not limited to room temperature conditions and can be applied whenever the expandable polymer material is wet with a wettable liquid, and the expansion is performed at a temperature preferably below the vaporization or boiling points of that liquid.
    • 本发明涉及包括用可湿性液体再湿润可膨胀聚合物以允许在室温或低于室温下增强膨胀而不破裂的方法,并且在某些情况下允许使用已知方法获得比在升高的温度下更大的膨胀比 。 本发明还可以实现具有独特性质和处理特性的材料。 这些性质包括材料厚度减小,密度增加,节点/原纤维形态改变,以及在平坦材料情况下更一致的网。 该方法不限于室温条件,只要可膨胀聚合物材料用可湿性液体润湿,并且膨胀在优选低于该液体的蒸发或沸点的温度下进行。