Corona-treated polypropylene liquid filtration media
OwnerLarry Vair, Robert Sandersinventors
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Abstract
Improved liquid filtration media with lower pressure drop and increased dirt holding capacity includes a fibrous mat of randomly oriented meltblown polypropylene fibers, where mat has a mean flow pore size of 0.2 to 10 microns and has been corona treated.
Claims14
A liquid filtration medium comprised of a meltblown polypropylene mat which has been corona-treated and has a mean flow pore size of 0.2 to 10 microns.
A method of forming a liquid filtration medium having a mean flow pore size of 0.2 to 10 microns comprising:
- a) meltblowing polypropylene through a fiberizing die tip to form a polypropylene fiber mat;
- and
- b) applying corona treatment to the mat.
A method of liquid filtration comprising filtering a liquid through a liquid filtration medium comprising a corona-treated, meltblown polypropylene mat having a mean flow pore size of 0.2 to 10 microns.
Dependencies are inferred from the claim text.