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1. WO2020112943 - FILTER MEDIA HAVING A FINE PORE SIZE DISTRIBUTION

Publication Number WO/2020/112943
Publication Date 04.06.2020
International Application No. PCT/US2019/063521
International Filing Date 27.11.2019
IPC
B01D 39/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
D04H 3/00 2012.01
DTEXTILES; PAPER
04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING
3Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
D04H 1/00 2006.01
DTEXTILES; PAPER
04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING
1Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
CPC
B01D 2239/0622
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
06Filter cloth, e.g. knitted, woven non-woven; self-supported material
0604Arrangement of the fibres in the filtering material
0622Melt-blown
B01D 2239/0627
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
06Filter cloth, e.g. knitted, woven non-woven; self-supported material
0604Arrangement of the fibres in the filtering material
0627Spun-bonded
B01D 2239/065
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
06Filter cloth, e.g. knitted, woven non-woven; self-supported material
065More than one layer present in the filtering material
B01D 2239/1216
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
12Special parameters characterising the filtering material
1216Pore size
B01D 2239/1233
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
12Special parameters characterising the filtering material
1233Fibre diameter
B01D 2239/1291
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
12Special parameters characterising the filtering material
1291Other parameters
Applicants
  • HOLLINGSWORTH & VOSE COMPANY [US]/[US]
Inventors
  • REZAEI, Farzad
  • DOUCOURÉ, Abdoulaye
Agents
  • WALAT, Robert, H.
Priority Data
16/206,56630.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FILTER MEDIA HAVING A FINE PORE SIZE DISTRIBUTION
(FR) MILIEU FILTRANT AYANT UNE DISTRIBUTION DE TAILLE DE PORES FINS
Abstract
(EN)
Filter media having a relatively small pore size and related components, systems, and methods associated therewith are provided. The filter media may include a fibrous efficiency layer, a fibrous support layer, and a third layer adjacent to the efficiency layer. The efficiency layer may impart a relatively homogeneous pore structure to the filter media without adding substantial bulk to the filter media. The support layer may promote the homogeneity of the pore structure. For example, the support layer may prevent and/or minimize defects in the relatively thin efficiency layer that may result from manufacturing and/or processing. The third layer may serve to impart beneficial filtration (e.g., efficiency, dust holding capacity) and/or non-filtration (e.g., layer protection) properties to the filter media without adversely affecting one or more properties of the filter media. Filter media, as described herein, may be particularly wellsuited for applications that involve liquid filtration, amongst other applications.
(FR)
L'invention concerne également un milieu filtrant ayant une taille de pore relativement petite et des composants, des systèmes et des procédés associés associés. Le milieu filtrant peut comprendre une couche d'efficacité fibreuse, une couche de support fibreuse et une troisième couche adjacente à la couche d'efficacité. La couche d'efficacité peut conférer une structure de pores relativement homogène au milieu filtrant sans ajouter de masse substantiel au milieu filtrant. La couche de support peut favoriser l'homogénéité de la structure de pores. Par exemple, la couche de support peut empêcher et/ou minimiser des défauts dans la couche d'efficacité relativement mince qui peuvent résulter de la fabrication et/ou du traitement. La troisième couche peut servir à conférer une filtration bénéfique (par exemple, l'efficacité, la capacité de rétention de poussière) et/ou des propriétés de non-filtration (par exemple, protection de couche) au milieu filtrant sans affecter négativement une ou plusieurs propriétés du milieu filtrant. le milieu filtrant, tel que décrits dans la description, peut être particulièrement adapté à des applications qui impliquent une filtration de liquide, entre autres applications.
Also published as
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