Particle-loaded nonwoven fibrous article for separations and purifications
AssigneeMinnesota Mining and Manufacturing Company
InventorsCraig G. Markell, Donald F. Hagen, Paul E. Hansen, Nicholas R. Baumann
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Abstract
A particle loaded, porous, fibrous compressed or fused article comprises a nonwoven fibrous polymeric web, which preferably is thermoplastic, melt-extrudable, and pressure-fusible blown microfibrous web, and sorptive particles enmeshed in said web, the particle loaded fibrous article has a Gurley number of at least two seconds, and the article is useful in separation science. A method of preparation of the article and method of use is also disclosed.
Claims22
A particle loaded, porous, fibrous, at least one of at least one of compressed or fused, article comprising
- a) a thermoplastic nonwoven fibrous polymeric web, and
- b) sorptive particles enmeshed in said web,
- wherein said particle loaded fibrous article has been compressed or fused by at least one of calendering, heating, and applying pressure to provide said article with controlled porosity and a Gurley number of at least four seconds, and wherein said article is useful in separation science.
Dependencies are inferred from the claim text.