公开(公告)号：US20170189914A1

公开(公告)日：2017-07-06

申请号：US15461976

申请日：2017-03-17

申请人： DELSTAR TECHNOLOGIES, INC

发明人： Rick L. CHAPMAN

IPC分类号： B03C3/28 ,  D04H3/018 ,  D01D5/06 ,  B01D46/00 ,  D01F6/06

CPC分类号： F24F3/166 ,  B01D46/0032 ,  B03C3/28 ,  D01D5/06 ,  D01F1/00 ,  D01F6/06 ,  D01F6/38 ,  D04H3/018 ,  D06M13/00 ,  F24F3/1603

摘要： A filtration material comprising a blend of polypropylene and acrylic fibers of round, flat, dog bone, oval or kidney bean shape in any size from 0.08 to 3.3 Dtex. A preferred blend contains about 50 weight percent polypropylene fibers and about 50 weight percent acrylic fibers. The fibers can be blended ranging from 90:10 to 10:90 polypropylene to acrylic. The shape contains 25 weight percent round, flat, oval, dog bone and kidney bean shapes. The fiber blend contains 25 weight percent of at least one size between 0.08 and 3.3 Dtex. Electret fibers incorporated within these blends have 0.02 to 33 weight percent of a charge control agent. These fibers can be used in producing electret material by corona or triboelectric charging methods.