A filter fabric having improved filtering properties for hot gas filtration containing a nonwoven aramid mat The mat has a basis weight of at least 9.7 ounces per square yard (330 grams per square meter) and is characterized by a pore size distribution in which the number of pores in a given range as measured by ASTM F316-03 test method is plotted against pore size. In a preferred embodiment, the percentage of pores having a size in between 10 and 26 microns is greater than 50 % while the percentage of pores having a size of greater than 50 microns is less than 0.5 %.
申请公布号
WO2012078890(A1)
申请公布日期
2012.06.14
申请号
WO2011US63971
申请日期
2011.12.08
申请人
E.I. DU PONT DE NEMOURS AND COMPANY;WYSS, KURT, HANS;CHI, CHENG-HANG