FILTER MEDIA WITH IMPROVED DUST LOADING

To provide filter media that exhibit improved dust loading on an upstream face.SOLUTION: Filter media comprise: a downstream layer 110 of filter material in a corrugated configuration defining peaks 112 and valleys 114, where the downstream layer of filter material has a capture efficiency of at lea...

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Bibliographische Detailangaben
Hauptverfasser:	ROBERT M ROGERS, AFLAL RAHMATHULLAH, GREGORY S TRONNES
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BRAIDING COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS KNITTING LACE-MAKING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL NON-WOVEN FABRICS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TEXTILES TRANSPORTING TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	To provide filter media that exhibit improved dust loading on an upstream face.SOLUTION: Filter media comprise: a downstream layer 110 of filter material in a corrugated configuration defining peaks 112 and valleys 114, where the downstream layer of filter material has a capture efficiency of at least 10% and a mean corrugation depth of less than 2.0 mm; and an upstream layer 120 of fibers extending across the peaks of the downstream layer of filter material, where the upstream layer of fibers has a mean fiber diameter of at least 10 microns, and a solidity of less than 10%.SELECTED DRAWING: Figure 1 【課題】上流面上の改良された粉塵負荷を表す濾過媒体を提供する。【解決手段】濾過媒体は、山１１２及び谷１１４を画定する波型構成における濾過材料の下流層１１０であって、前記濾過材料の下流層は、少なくとも１０％の捕捉効率及び２．０ｍｍ未満の平均波型深さを有する、濾過材料の下流層と、前記濾過材料の下流層の前記山にわたって延在する繊維の上流層１２０であって、前記繊維の上流層は、少なくとも１０ミクロンの平均繊維径を有し、前記繊維の上流層は１０％未満の固体性を有する、繊維の上流層と、を含む。【選択図】図１