Invention Grant
- Patent Title: Filtration media
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Application No.: US14774903Application Date: 2014-03-14
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Publication No.: US10195555B2Publication Date: 2019-02-05
- Inventor: Kevin R. Schouweiler , Kent Williamson , Kristin Amsden , Steven D. Schmeichel
- Applicant: AHLSTROM-MUNKSJÖ OYJ , DONALDSON COMPANY, INC.
- Applicant Address: FI Helsinki US MN Bloomington
- Assignee: Ahlstrom-Munksjo Oyj,Donaldson Company, Inc.
- Current Assignee: Ahlstrom-Munksjo Oyj,Donaldson Company, Inc.
- Current Assignee Address: FI Helsinki US MN Bloomington
- Agency: Ostrager Chong Flaherty & Broitman PC
- International Application: PCT/FI2014/050193 WO 20140314
- International Announcement: WO2014/140429 WO 20140918
- Main IPC: B01D39/00
- IPC: B01D39/00 ; B01D39/16 ; B01D39/18 ; D21H11/12

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
- US20160016101A1 FILTRATION MEDIA Public/Granted day:2016-01-21
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