Conductive filter laminate
AssigneeW. L. Gore & Associates, Inc.
InventorsAlex R. Hobson, David E. Mooney, Stephen K. Stark
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Abstract
The present invention is an improved electrically conductive filter media particularly suitable for use in applications where static electricity must be dissipated. The filter media of the present invention comprises a microporous filtration layer having electrically conductive particles embedded therein. When attached to support media, this structure provides exceptional filtration efficiency while assuring a consistent and evenly distributed electrical pathway to ground.
Claims20
An electrically conductive filter media comprising
- an electrically dissipative filtration layer having a microporous membrane structure of extended polytetrafluoroethylene;
- a support layer attached to the filtration layer;
- wherein the microporous structure includes electrically conductive particles embedded within the microporous membrane structure of the expanded polytetrafluoroethylene filter layer, the electrically conductive particles providing an evenly distributed electric pathway throughout the filtration layer to dissipate static charges from the filter media.
A method for producing an electrically conductive filter media comprising
- providing an electrically dissipative filtration layer having
- a microporous membrane structure of expanded polytetrafiuoroethylene
- having conductive particles embedded within the microporous membrane structure of the expanded polytetrafluoroethylene filter layer to dissipate static charges via an evenly distributed electrical pathway through the filtration layer;
- attaching a support layer to the filtration layer mounting the filtration layer on to a filtration apparatus, the filtration apparatus including an electrical connection to conduct static charges from the filtration layer to ground;
- and
- dissipating electrical charges evenly from the filtration layer during use via the electric pathway through the filtration layer.
Dependencies are inferred from the claim text.