发明名称 |
High performance gas turbine inlet filter (HEPA) using membrane media |
摘要 |
A composite filter media structure and an associated method of making are provided. The structure includes a base substrate that includes a nonwoven fabric substrate formed from a plurality of bicomponent synthetic fibers using a spunbond process. The composite filter media structure includes a surface layer deposited on one side of the base substrate where a thermal lamination process can be used to combine the base substrate and the surface layer. The surface layer is formed from a microporous expanded polytetrafluoroethylene membrane. In one aspect, the base substrate and the surface layer are configured to provide greater than 95% and equal to or less than 99.5% filtration efficiency measured in accordance with an EN 1822 test method. In another aspect, the filter media includes an embossing pattern or a plurality of corrugations formed using opposing rollers at a temperature of about 90° C. to about 140° C. |
申请公布号 |
US8262780(B2) |
申请公布日期 |
2012.09.11 |
申请号 |
US20090507334 |
申请日期 |
2009.07.22 |
申请人 |
SMITHIES ALAN;CLEMENTS JACK T.;POLIZZI CYNTHIA;BHA GROUP, INC |
发明人 |
SMITHIES ALAN;CLEMENTS JACK T.;POLIZZI CYNTHIA |
分类号 |
B01D53/22;B01D39/16;B01D46/52;B32B37/04 |
主分类号 |
B01D53/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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