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A method for the production of fibers for high-strength nonwoven fabrics and nonwovens and fibers produced therefrom.
A method for the production of fibers for high-strength nonwoven fabrics and nonwovens and fibers produced therefrom.
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机译:一种用于生产高强度非织造织物和非织造织物的纤维的方法,以及由此生产的纤维。
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摘要
Process of producing a polypropylene containing fiber and the resulting fiber and non-woven articles are described. The process involves the extruding of polypropylene containing material having a broad molecular weight distribution to form a hot extrudate having a surface, and quenching the hot extrudate in an oxidative atmosphere so as to effect oxidative chain scission degradation of the surface to obtain a fiber having a higher average melt flow rate as compared to an average melt flow rate of an inner, non-degraded portion thereof, and containing at least 7 weight percent of molecules having a molecular weight greater than 5 x 105.
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机译:描述了生产含聚丙烯的纤维的方法以及所得的纤维和非织造制品。该方法包括挤出具有宽分子量分布的含聚丙烯的材料以形成具有表面的热挤出物,并在氧化气氛中淬火该热挤出物以实现表面的氧化断链降解,从而获得具有表面活性的纤维。与内部未降解部分的平均熔体流动速率相比,平均熔体流动速率更高,并且包含至少7重量%的分子量大于5 x 10 5 Sup>的分子。
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