Process for making high efficiency synthetic filter media
AssigneeKnowlton Technologies, LLC
InventorsRichard Frank Barlow, Jr., Keh Dema
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Abstract
The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. A process for making the filtration media is also provided. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.
Claims10
A method for forming a nonwoven filter media, said method comprising:
- (a) blending a synthetic microfiber and a fibrillated cellulosic fiber to form a first homogeneous slurry;
- (b) blending a monocomponent staple fiber with said first homogeneous slurry to form a second homogeneous slurry;
- wherein said nonwoven filter media comprises at least 5 and not more than 70 weight percent of said monocomponent staple fiber;
- and
- (c) forming said nonwoven filter media with said second homogeneous slurry.
Dependencies are inferred from the claim text.