公开(公告)号：EP3177382A4

公开(公告)日：2018-01-03

申请号：EP15829129

申请日：2015-08-06

申请人： CLARCOR ENGINE MOBILE SOLUTIONS LLC

发明人： CALCATERRA FARRELL FRANCIS ,  GREEN TOM ,  LI LEI ,  GILBERT TETYANA ,  BAJPAI VARDHAN ,  WU ZHIWANG ,  TAYLOR CHAD ANDREW

IPC分类号： B01D39/02 ,  B01D39/04 ,  B01D39/16 ,  B01D39/18 ,  B01D39/20

CPC分类号： B01D39/1623 ,  B01D39/1615 ,  B01D39/18 ,  B01D39/2017 ,  B01D2239/025 ,  B01D2239/065 ,  B01D2239/1233

摘要： A composite filter media includes a base sheet incorporating polymer microfibers and nano-fibrillated cellulose in combination with one or more alternative upstream depth filtration layers. Embodiments of the composite filter media employ polymer or fiberglass layers arranged on the upstream face of the base sheet. A lightweight protective spun bond scrim may be applied to the upstream face of the upstream depth filtration material. The depth filtration layer or layers may be laminated to each other and/or the base sheet or co-pleated with the base sheet to form the disclosed composite media. The depth filtration layers are configured to provide a positive density gradient in the direction of fuel flow through the composite media, meaning that the depth filtration media increases in density and decreases in pore size in the direction of fuel flow.