WO2021153296A1 - Tissu non tissé à électret multicouches, et unité de filtre à air et purificateur d'air l'utilisant - Google Patents

Tissu non tissé à électret multicouches, et unité de filtre à air et purificateur d'air l'utilisant Download PDF

Info

Publication number
WO2021153296A1
WO2021153296A1 PCT/JP2021/001409 JP2021001409W WO2021153296A1 WO 2021153296 A1 WO2021153296 A1 WO 2021153296A1 JP 2021001409 W JP2021001409 W JP 2021001409W WO 2021153296 A1 WO2021153296 A1 WO 2021153296A1
Authority
WO
WIPO (PCT)
Prior art keywords
woven fabric
laminated
fabric layer
melt
laminated electret
Prior art date
Application number
PCT/JP2021/001409
Other languages
English (en)
Japanese (ja)
Inventor
山野浩司
小出現
Original Assignee
東レ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東レ株式会社 filed Critical 東レ株式会社
Priority to CN202180009679.9A priority Critical patent/CN114981494A/zh
Priority to JP2021503074A priority patent/JPWO2021153296A1/ja
Priority to KR1020227024089A priority patent/KR20220124188A/ko
Publication of WO2021153296A1 publication Critical patent/WO2021153296A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0032—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions using electrostatic forces to remove particles, e.g. electret filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/28—Plant or installations without electricity supply, e.g. using electrets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • B32B5/267—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a spunbonded fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • B32B5/268—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric
    • B32B5/269—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric characterised by at least one non-woven fabric layer that is a melt-blown fabric next to a non-woven fabric layer that is a spunbonded fabric
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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 ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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 ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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 ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0435—Electret
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0622—Melt-blown
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0627—Spun-bonded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0668—The layers being joined by heat or melt-bonding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Electrostatic Separation (AREA)

Abstract

Un objectif de la présente invention est de fournir : un tissu non-tissé à électret multicouches qui présente une faible perte de pression et une efficacité de piégeage élevée, ainsi qu'une aptitude supérieure au moulage en forme de filtre ; et une unité de filtre à air et un purificateur d'air qui utilisent ledit tissu non tissé à électret multicouches.　Un tissu non tissé à électret multicouches selon la présente invention est tel qu'une couche de tissu non-tissé filé-lié constituée de fibres formées à partir d'une résine de polyoléfine (A), et qu'une couche de tissu non-tissé obtenu par fusion-soufflage constituée de fibres formées à partir d'une résine de polyoléfine (B), sont disposées en couches. Le tissu non tissé à électret multicouches contient 0,1 à 5 % en masse d'un composé amine encombrée. Le poids de tissu du tissu non tissé à électret multicouches est de 5 à 60 g/m2. La couche de tissu non tissé obtenu par fusion-soufflage constitue de 1 à 15 % en masse de la masse du tissu non tissé à électret multicouches.
PCT/JP2021/001409 2020-01-27 2021-01-18 Tissu non tissé à électret multicouches, et unité de filtre à air et purificateur d'air l'utilisant WO2021153296A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202180009679.9A CN114981494A (zh) 2020-01-27 2021-01-18 层叠驻极体无纺布以及使用其而成的空气过滤器单元，空气净化机
JP2021503074A JPWO2021153296A1 (fr) 2020-01-27 2021-01-18
KR1020227024089A KR20220124188A (ko) 2020-01-27 2021-01-18 적층 일렉트렛 부직포, 그리고 이것을 사용하여 이루어지는 에어 필터 유닛, 공기 청정기

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020010612 2020-01-27
JP2020-010612 2020-01-27

Publications (1)

Publication Number Publication Date
WO2021153296A1 true WO2021153296A1 (fr) 2021-08-05

Family

ID=77078343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/001409 WO2021153296A1 (fr) 2020-01-27 2021-01-18 Tissu non tissé à électret multicouches, et unité de filtre à air et purificateur d'air l'utilisant

Country Status (5)

Country Link
JP (1) JPWO2021153296A1 (fr)
KR (1) KR20220124188A (fr)
CN (1) CN114981494A (fr)
TW (1) TW202146730A (fr)
WO (1) WO2021153296A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023276484A1 (fr) * 2021-07-02 2023-01-05 東レ株式会社 Feuille de fibre d'électret, feuille stratifiée, filtre à air, et procédé de fabrication de feuille de fibre d'électret

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009275312A (ja) * 2008-05-15 2009-11-26 Kuraray Kuraflex Co Ltd 積層体およびその製造方法
JP2009275327A (ja) * 2008-05-16 2009-11-26 Toray Ind Inc スパンボンド不織布およびそれを用いたエアフィルター
JP2013540904A (ja) * 2010-08-23 2013-11-07 ファイバーウェブ コロビン ゲーエムベーハー エレクトレット特性を有する不織ウェブ及び繊維、その製造方法並びにその使用
JP2019093367A (ja) * 2017-11-27 2019-06-20 東レ株式会社 エレクトレット繊維シートおよびその製造方法
JP2019151962A (ja) * 2018-02-28 2019-09-12 東レ株式会社 積層不織布およびフィルター材
JP2019155244A (ja) * 2018-03-09 2019-09-19 日本バイリーン株式会社 積層帯電濾材
WO2020022260A1 (fr) * 2018-07-27 2020-01-30 東レ株式会社 Étoffe non tissée filée-liée et filtre à air constitué d'une étoffe non-tissée filée-liée

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102470302B (zh) * 2009-07-08 2015-03-11 Jnc株式会社 使用了层叠驻极体无纺布的空气过滤材料
JP2018095973A (ja) * 2016-12-08 2018-06-21 東レ株式会社 メルトブロー不織布

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009275312A (ja) * 2008-05-15 2009-11-26 Kuraray Kuraflex Co Ltd 積層体およびその製造方法
JP2009275327A (ja) * 2008-05-16 2009-11-26 Toray Ind Inc スパンボンド不織布およびそれを用いたエアフィルター
JP2013540904A (ja) * 2010-08-23 2013-11-07 ファイバーウェブ コロビン ゲーエムベーハー エレクトレット特性を有する不織ウェブ及び繊維、その製造方法並びにその使用
JP2019093367A (ja) * 2017-11-27 2019-06-20 東レ株式会社 エレクトレット繊維シートおよびその製造方法
JP2019151962A (ja) * 2018-02-28 2019-09-12 東レ株式会社 積層不織布およびフィルター材
JP2019155244A (ja) * 2018-03-09 2019-09-19 日本バイリーン株式会社 積層帯電濾材
WO2020022260A1 (fr) * 2018-07-27 2020-01-30 東レ株式会社 Étoffe non tissée filée-liée et filtre à air constitué d'une étoffe non-tissée filée-liée

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023276484A1 (fr) * 2021-07-02 2023-01-05 東レ株式会社 Feuille de fibre d'électret, feuille stratifiée, filtre à air, et procédé de fabrication de feuille de fibre d'électret
JP7226655B1 (ja) * 2021-07-02 2023-02-21 東レ株式会社 エレクトレット繊維シートおよび積層シート、エアフィルター、エレクトレット繊維シートの製造方法

Also Published As

Publication number Publication date
JPWO2021153296A1 (fr) 2021-08-05
TW202146730A (zh) 2021-12-16
CN114981494A (zh) 2022-08-30
KR20220124188A (ko) 2022-09-13

Similar Documents

Publication Publication Date Title
US10335728B2 (en) Filter medium for air filter, filter pack, and air filter unit
EP2452737B1 (fr) Matériau pour filtre à air constitué d'un non-tissé multicouche de type électret
JP5489084B2 (ja) 混繊長繊維不織布
EP3553214B1 (fr) Feuille de fibres d'électret
JP6730677B2 (ja) 積層不織布シート
KR101997482B1 (ko) 혼섬 부직포와 이것을 사용해서 이루어지는 여재
KR102116776B1 (ko) 혼섬 부직포 및 그 제조 방법
JP5205650B2 (ja) 積層体およびその製造方法
JPWO2020022260A1 (ja) スパンボンド不織布、および、スパンボンド不織布から構成されるエアフィルター
JP2015183327A (ja) メルトブロー不織布および複合濾材
WO2021153296A1 (fr) Tissu non tissé à électret multicouches, et unité de filtre à air et purificateur d'air l'utilisant
JPWO2019159654A1 (ja) 不織布およびこれを用いてなるエアフィルター濾材
EP3705615B1 (fr) Tissu non tissé filé-lié
JP2021115521A (ja) 補強エアフィルターユニットおよび空気清浄機
JP2020196974A (ja) メルトブロー不織布製造用口金ならびにメルトブロー不織布の製造装置および製造方法
JP7147329B2 (ja) 積層不織布およびフィルター材
JP7173022B2 (ja) 積層不織布およびその製造方法
JP2021147711A (ja) 積層エレクトレット不織布およびその製造方法、ならびにエアフィルター濾材、フィルター
WO2024085211A1 (fr) Matériau de filtration et filtre

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2021503074

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21747807

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21747807

Country of ref document: EP

Kind code of ref document: A1