Absorbent and/or adsorptive filter media
AssigneeHollingsworth & Vose Company
InventorsSvetlana Krupnikov, Erich Jurgen Gaudry Sada
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Abstract
Filter media suitable for various applications and related components, systems, and methods associated therewith are described. The filter media may include a composite structure having a mixture comprising fibrillated fibers (e.g., lyocell) and functional particles. The filter media may exhibit favorable absorption and/or adsorption characteristics.
Claims38
A filter media comprising fibrillated fibers and functional particles, wherein the fibrillated fibers have a Canadian Standard Freeness level of fibrillation of between about 110 mL and about 800 mL and the functional particles comprise greater than about 25% by weight of the filter media.
A filter media comprising fibrillated fibers and functional particles, wherein the functional particles comprise greater than about 25% by weight of the filter media, wherein the filter media exhibits a moisture absorption of greater than about 20% by weight after 3 hours of exposure to a moist environment.
A method of preparing a filter media comprising:
- mixing a plurality of fibrillated fibers and functional particles together to form a mixture comprising fibers and particles;
- applying a first electrostatic charge to the mixture;
- adding a binder material to the mixture, the binder material having a second electrostatic charge opposite in polarity from the first electrostatic charge;
- and
- forming the filter media from the mixture.
A method of filtration, comprising filtering fluid using a filter media comprising fibrillated fibers and functional particles, wherein the fibrillated fibers have a Canadian Standard Freeness level of fibrillation of between about 110 mL and about 800 mL and the functional particles comprise greater than about 25% by weight of the filter media.
Dependencies are inferred from the claim text.