FILTER MEDIA INCLUDING FINE STAPLE FIBERS

摘要

Filter media comprising fine staple fibers and related components, systems, and methods associated therewith are provided. In some embodiments, a filter media may include a layer (e.g., a wet laid layer) comprising polymeric staple fibers having a relatively small average diameter (e.g., less than or equal to about 1 micron). The polymeric staple fiber layer may be designed to impart desirable properties to the filter media, such as a high particulate efficiency and/or fluid separation efficiency, while having relatively minimal or no adverse effects on one or more properties of the filter media that are important for a given application. The filter media, described herein, may be particularly well-suited for a variety of applications.

主权项

1. A filter media comprising:
a first layer comprising a first plurality of polymeric staple fibers having an average fiber diameter of less than or equal to about 3 microns and an average length of less than or equal to about 10 cm; a second layer comprising fibers having an average fiber diameter of greater than or equal to about 4 microns; and a third layer, wherein the third layer is a non-wetlaid layer, wherein at least one surface of the first, second, and third layers is surface modified, and wherein the filter media has an air permeability between 0.3 CFM and 300 CFM and a basis weight of between 5 g/m2 and 1,000 g/m2.