公开(公告)号：EP2161066A1

公开(公告)日：2010-03-10

申请号：EP09168265.8

申请日：2009-08-20

申请人： BHA Group Holdings Inc.

发明人： SMITHIES, Alan ,  CLEMENTS, Jack T. ,  MEI, Jason

IPC分类号： B01D39/16

CPC分类号： B01D39/1623 ,  B01D46/0001 ,  B01D46/521 ,  B01D46/546 ,  B01D63/065 ,  B01D63/067 ,  B01D63/10 ,  B01D69/02 ,  B01D69/10 ,  B01D71/06 ,  B01D2239/0216 ,  B01D2239/025 ,  B01D2239/065 ,  B01D2275/10 ,  B01D2325/20 ,  B01D2325/32 ,  B29C53/24 ,  B29K2105/162 ,  B29L2031/14 ,  D01D5/0069 ,  D01D5/0084 ,  D04H1/4374 ,  D04H1/559 ,  D04H1/728 ,  D04H3/147 ,  D04H13/002

摘要： A method of making a composite filter media 10 includes, in an exemplary aspect, forming a nonwoven fabric substrate 12 that includes a plurality of bicomponent synthetic fibers by a spunbond process, calendering the nonwoven fabric substrate with embossing calender rolls to form a bond area pattern having a plurality of substantially parallel discontinuous lines of bond area to bond the synthetic bicomponent fibers 30 together to form a nonwoven fabric. The nonwoven fabric having a minimum filtration efficiency of about 50%, measured in accordance with ASHRAE 52.2-1999 test procedure. The method also includes applying a nanofiber layer 20 by electro-blown spinning a polymer solution to form a plurality of nanofibers on at least one side of the nonwoven fabric. The composite filter media 10 having a filtration efficiency of at least about 75%, measured in accordance with ASHRAE 52.2-1999 test procedure. The method further includes corrugating the composite filter media using opposing corrugating rollers 40 at a temperature of about 90°C to about 140°C.

摘要翻译： 制造复合过滤介质10的方法在示例性方面包括通过纺粘方法形成包括多个双组分合成纤维的非织造织物基材12，用压花压延辊压延无纺布基材以形成粘合区域图案 具有多个基本上平行的不连续的粘合区域线，以将合成的双组分纤维30粘合在一起以形成无纺织物。 根据ASHRAE 52.2-1999测试程序测量的具有约50％的最小过滤效率的无纺织物。 该方法还包括通过电纺丝聚合物溶液来施加纳米纤维层20，以在非织造织物的至少一侧上形成多个纳米纤维。 根据ASHRAE 52.2-1999测试程序测量的具有至少约75％的过滤效率的复合过滤介质10。 该方法还包括在约90℃至约140℃的温度下使用相对的波纹辊40使复合过滤介质波纹化。