Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1995-06-16
1996-03-05
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428286, 428296, 428298, 55488, D02G 300, B32B 300
Patent
active
054966272
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.
REFERENCES:
patent: 3490211 (1970-01-01), Cartier
patent: 4215682 (1980-08-01), Kubik et al.
patent: 4267002 (1981-05-01), Sloan et al.
patent: 4392808 (1983-07-01), Phillips
patent: 4707409 (1987-11-01), Phillips
patent: 4714647 (1987-12-01), Shipp et al.
patent: 4824451 (1989-04-01), Vogt et al.
patent: 4904174 (1990-02-01), Moosmayer et al.
patent: 4954398 (1990-09-01), Bagrodia et al.
patent: 5268229 (1993-12-01), Phillips
patent: 5336286 (1994-08-01), Alexander et al.
"Grooved Surface Extends Filter Life," Chemical Engineering, Oct., 1994, p. 181.
"Filterration Equals Innovation," Chemical Engineering, Oct., 1994, pp. 119-120.
1994 "Nonwovens Conference" Proceedings, pp. 9-11.
Air Filtration Improved by Corona Charging of Fibrous Materials, Wadsworth and Psai, Textiles and Nonwovens Development Center (TANDEC), University of Tennessee, Knoxville, Tennessee.
Bagrodia Shriram
Haile William A.
Phillips Bobby M.
Eastman Chemical Company
Gwinnell Harry J.
Ryan Patrick J.
Stevens John F.
Weisberger Richard
LandOfFree
Composite fibrous filters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composite fibrous filters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite fibrous filters will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1411720