| 摘要 |
A filter cartridge ( 20 ) and method for making a filter cartridge ( 20 ) for removing particulates from a particulate laden fluid stream moving one direction through the filter cartridge. The filter cartridge ( 20 ) is periodically subject to cleaning fluid moving in an opposite direction to the fluid stream. The filter cartridge ( 20 ) comprises filtration media ( 24 ) formed into a tubular configuration and having a plurality of circumferentially spaced apart pleats ( 26 ). A retention device ( 82 ) to limit radial movement of the filtration media ( 24 ) when subjected to the periodical cleaning fluid and to maintain the pleats ( 26 ) in the filtration media circumferentially spaced apart when exposed up to 130 degrees Celsius. Preferably, the extrudate ( 144 ) is thermoplastic, polyester, elastomeric material and at least one additive may be present. Multiple layers of the extrudate ( 144 ) may be fused together.
|
