公开(公告)号：WO2020243034A1

公开(公告)日：2020-12-03

申请号：PCT/US2020/034442

申请日：2020-05-24

申请人： ULTRA SMALL FIBERS, LLC

发明人： HOFMEISTER, William ,  VAN WYK, Robert ,  ANDERSON, Colin

IPC分类号： B29C33/00 ,  B29C47/00 ,  B32B3/26 ,  D01D5/00 ,  D01D7/00 ,  D04H1/736

摘要： Nanofiber filter media ribbons (100) are flexible elongate strips of polymeric material (818) having a surface on which is formed an array of nanofibers (310). Ribbons (100) are formable into woven or non-woven mats (400). Filter ribbons (100) are formable by applying a moldable polymer to a first angular location of a rotating cylindrical roll (802) having an array of nanoholes (806) formed in a circumferential surface (804) thereof so that the polymer (810) covers the surface (804) of the roll (802) and infiltrates the nanoholes (806); cooling the polymer (810) while rotating the polymer-covered roll to a second angular position; and removing the cooled polymer (810) from the roll (802) as an elongate film (818) having an array of nanofibers (310) formed on a surface thereof by the polymer (810) that infiltrated the nanoholes (806).