Importance

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Abstract

A cylindrical polymer fiber filter cartridge for liquid filtration is formed by applying an acrylic latex binder, diluted with water, to a batt of thermoplastic polymer fibers and winding the batt onto a core to form a hollow fibrous cylinder while applying compression with a compression roll to an outer surface of the fibrous cylinder. After the batt is fully wound onto the core, the cylindrical cartridge is rotated at a speed sufficient to cause the acrylic latex binder to foam in-situ thereby fluidizing the cartridge to allow the polymer fibers in the cartridge to reorient to form a smooth outer surface on the cartridge and to evenly distribute the acrylic binder throughout the cartridge. The binder in the cartridge is then cured to bond the fibers together at their points of intersection and annular grooves are cut in the outer surface of the cartridge to increase the surface area of the filter.

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First Claim