Invention Grant
- Patent Title: Filtration media
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Application No.: US17532230Application Date: 2021-11-22
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Publication No.: US12023612B2Publication Date: 2024-07-02
- Inventor: Kevin R. Schouweiler , Kent Williamson , Kristin Amsden , Steven D. Schmeichel
- Applicant: AHLSTROM-MUNKSJÖ OYJ , DONALDSON COMPANY, INC.
- Applicant Address: FI MN Helsinki
- Assignee: AHLSTROM OYJ,DONALDSON COMPANY, INC.
- Current Assignee: AHLSTROM OYJ,DONALDSON COMPANY, INC.
- Current Assignee Address: FI Helsinki; US MN Minneapolis
- Agency: CANTOR COLBURN LLP
- Main IPC: B01D39/16
- IPC: B01D39/16 ; B01D39/18 ; D04H3/00 ; D04H5/04

Abstract:
A filtration media with improved filtration, strength, tear resistance and air permeability in the form of a relatively thin and lightweight wet-laid fibrous web that has a wet Mullen ratio of 60% to 80% to ensure that the media is flexible enough to be formed into a fluted structure, and strong enough to retain the fluted structure when wound into a roll and to permit further processing without the media becoming too brittle. The filtration media comprises a blend of cellulose and synthetic fibers having a weight percent of 81 wt % to 87 wt % of a weight of the media and a resin binder having a weight of 13 wt % to 19 wt % (preferably about 16 wt %) of the weight of the media.
Public/Granted literature
- US20220080340A1 FILTRATION MEDIA Public/Granted day:2022-03-17
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