Air Filter And Air Filter Assembly For Vacuum Cleaner With The Air Filter
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United States of America Patent
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N/A
Issued Date -
Dec 2, 2010
app pub date -
Oct 10, 2008
filing date -
Oct 19, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The invention aims at providing an air filter which is improved in the tight adhesion between an ePTFE membrane and a permeable support material without impairing the mechanical strength and permeability of the support material. An air filter produced by laminating a permeable support material (1) having a region wherein fibers different in fiber diameter are entangled and a porous polytetrafluoroethylene membrane (2), wherein the mean fiber diameter of the membrane-side face of the support material (1) is smaller than that of the back of the support material (1).
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