Document Type

Patent

Publication Date

3-5-1996

Patent Number

patent number 5496627

Abstract

Disclosed are novel composite fibrous structures which have utility as filters. These composite structures have at least two layers. The first layer is a nonwoven fibrous structure made from uniquely grooved fibers. The second layer is of a fibrous material that offers high filter efficiency.. The first layer has significantly lower pressure drop and higher dust holding capacity than the second layer.

Application Number

08/491387

Assignees

Eastman Chemical Company (Kingsport, TN)

Filing Date

1995-06-16

Primary/U.S. Class

442/337

Other/U.S. Class

55/488, 442/400

Share

COinS