公开(公告)号：US20070173162A1

公开(公告)日：2007-07-26

申请号：US11578760

申请日：2005-04-08

申请人： Samuel Ethiopia ,  Gert Claasen ,  Rajen Patel ,  Kenneth Stewart ,  Thomas Allgeuer ,  Edward Knickerbocker ,  Randy Pepper ,  Thomas Pressly

发明人： Samuel Ethiopia ,  Gert Claasen ,  Rajen Patel ,  Kenneth Stewart ,  Thomas Allgeuer ,  Edward Knickerbocker ,  Randy Pepper ,  Thomas Pressly

IPC分类号： C08L23/04 ,  D04H13/00

CPC分类号： D04H3/16 ,  C08L23/10 ,  C08L23/14 ,  C08L23/16 ,  D01F6/46 ,  D04H3/14 ,  Y10T442/60 ,  C08L2666/06

摘要： The present invention relates to nonwoven webs or fabrics. In particular, the present invention relates to nonwoven webs having superior abrasion resistance and excellent softness characteristics. The nonwoven materials comprise fibers made from of a polymer blend of isotactic polypropylene, reactor grade propylene based elastomers or plastomers, and optionally, a homoge-neously branched ethylene/alpha olefin plastomer or elastomer. The isotactic polypropylene can be homopolymer polypropylene, and random copolymers of propylene and one or more alpha-olefins. The reactor grade propylene based elastomers or plastomers plastomer have a molecular weight distribution of less than about 3.5, and a heat of fusion less than about 90 joules/gm. In particular, the reactor grade propylene based elastomers or plastomers contains from about 3 to about 15 percent by weight of units derived from an ethylene, and a melt flow rate of from about 2 to about 200 grams/10 minutes. The present invention also relates to cold drawn textured fibers comprising of a polymer blend of isotactic polypropylene and reactor grade propylene based elastomers or plastomers.

摘要翻译： 本发明涉及非织造纤维网或织物。 特别地，本发明涉及非织造纤维网，其具有优异的耐磨性和优异的柔软性。 非织造材料包括由全同立构聚丙烯，反应器级丙烯基弹性体或塑性体的聚合物共混物和任选的均相支化的乙烯/α-烯烃塑性体或弹性体制成的纤维。 全同立构聚丙烯可以是均聚聚丙烯，丙烯与一种或多种α-烯烃的无规共聚物。 反应器级丙烯基弹性体或塑性体塑性体的分子量分布小于约3.5，熔融热小于约90焦耳/克。 特别地，反应器级丙烯基弹性体或塑性体含有约3至约15重量％的衍生自乙烯的单元，熔体流动速率为约2至约200克/ 10分钟。 本发明还涉及包含全同立构聚丙烯和反应器级丙烯基弹性体或塑性体的聚合物共混物的冷拉纹理纤维。