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1. WO2020138010 - FILTER PLEAT PACK AND AIR FILTER UNIT

Publication Number WO/2020/138010
Publication Date 02.07.2020
International Application No. PCT/JP2019/050445
International Filing Date 23.12.2019
IPC
B01D 39/16 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
14Other self-supporting filtering material
16of organic material, e.g. synthetic fibres
B01D 63/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
63Apparatus in general for separation processes using semi-permeable membranes
14Pleat-type membrane modules
B01D 69/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
B01D 69/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
10Supported membranes; Membrane supports
B01D 69/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
12Composite membranes; Ultra-thin membranes
B01D 71/36 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
30Polyalkenyl halides
32containing fluorine atoms
36Polytetrafluoroethene
CPC
B01D 39/16
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
14Other self-supporting filtering material ; ; Other filtering material
16of organic material, e.g. synthetic fibres
B01D 46/52
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
46Filters ; , i.e. particle separators; or filtering processes specially modified for separating dispersed particles from gases or vapours
52Particle separators, e.g. dust precipitators, using filters embodying folded ; corrugated or wound sheet; material
B01D 63/14
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
63Apparatus in general for separation processes using semi-permeable membranes
14Pleat-type membrane modules
B01D 69/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
B01D 69/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02characterised by their properties
B01D 69/10
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
10Supported membranes; Membrane supports
Applicants
  • 日東電工株式会社 NITTO DENKO CORPORATION [JP]/[JP]
Inventors
  • 内山 志穂 UCHIYAMA Shiho
Agents
  • 鎌田 耕一 KAMADA Koichi
Priority Data
2018-24863228.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) FILTER PLEAT PACK AND AIR FILTER UNIT
(FR) PAQUET DE PLIS DE FILTRE ET UNITÉ DE FILTRE À AIR
(JA) フィルタプリーツパック及びエアフィルタユニット
Abstract
(EN)
A filter pleat pack according to the present disclosure comprises an air filter medium which is folded in a pleat shape, wherein the air filter medium includes a laminate composed of a polytetrafluoroethylene (PTFE) porous membrane and an air-permeable support material, and the shrinkage rate of the air filter medium as measured by the equation (d2-d1)/d2 is 50% or more. Herein, d1 is the minimum thickness of the PTFE porous membrane in a turning region of the air filter medium which is folded in a pleat shape. d2 is the thickness of the PTFE porous membrane in a flat region of the air filter medium. The filter pleat pack according to the present disclosure is a filter pleat pack in which a deterioration in collection efficiency during pleat processing is suppressed.
(FR)
Un paquet de plis de filtre selon la présente invention comprend un milieu de filtre à air qui est plié selon une forme de pli, le milieu de filtre à air comprenant un stratifié composé d'une membrane poreuse en polytétrafluoroéthylène (PTFE) et d'un matériau de support perméable à l'air, et le taux de retrait du milieu de filtre à air tel que mesuré par l'équation (d2-d1)/d2 est de 50 % ou plus. Dans la présente invention, d1 est l'épaisseur minimale de la membrane poreuse en PTFE dans une région charnière du milieu de filtre à air qui est pliée selon une forme de pli. d2 est l'épaisseur de la membrane poreuse en PTFE dans une région plate du milieu de filtre à air. Le paquet de plis de filtre selon la présente invention est un paquet de plis de filtre dans lequel une détérioration de l'efficacité de collecte pendant un traitement de pli est supprimée.
(JA)
本開示のフィルタプリーツパックは、プリーツ状に折り畳まれたエアフィルタ濾材を備え、エアフィルタ濾材は、ポリテトラフルオロエチレン(PTFE)多孔質膜と通気性支持材との積層体を含み、式(d2-d1)/d2により求められるエアフィルタ濾材の収縮率が50%以上である。ただし、d1は、プリーツ状に折り畳まれたエアフィルタ濾材の折り返し領域におけるPTFE多孔質膜の最小の厚さである。d2は、エアフィルタ濾材の平坦領域におけるPTFE多孔質膜の厚さである。本開示のフィルタプリーツパックは、プリーツ加工時における捕集効率の低下が抑制されたフィルタプリーツパックである。
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