KR930703496A - 섬유상 여과성 얼굴 마스크를 제조하는 방법 - Google Patents

섬유상 여과성 얼굴 마스크를 제조하는 방법

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KR930703496A
KR930703496A KR1019930701823A KR930701823A KR930703496A KR 930703496 A KR930703496 A KR 930703496A KR 1019930701823 A KR1019930701823 A KR 1019930701823A KR 930701823 A KR930701823 A KR 930701823A KR 930703496 A KR930703496 A KR 930703496A
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fibers
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web
layer
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죠셉 피. 크론저
로저 제이. 스투모
제임스 에프. 디루드
하비. 제이. 버그
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게리 리 그리스 월드
미네소타 마이닝 앤드 매뉴팩츄어링 컴패니
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    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • 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
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A41D13/1138—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a cup configuration
    • A41D13/1146—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a cup configuration obtained by moulding
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/544—Olefin series
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/55—Polyesters
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators
    • A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
    • 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
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216—Bicomponent or multicomponent fibres
    • 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
    • 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
    • B01D2239/0681—The layers being joined by gluing
    • 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
    • B01D2239/08—Special characteristics of binders
    • B01D2239/086—Binders between particles or fibres
    • 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
    • B01D2239/10—Filtering material manufacturing

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nonwoven Fabrics (AREA)
  • Filtering Materials (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

본 발명은 섬유상-여과상-얼굴 마스크 및 얼굴 마스크를 위한 성형층을 제조하는 방법에 관한 것이다.
상기 방법은 보통정도로 마모된 후 표면휴즈를 형성하는 경향이 상당히 저하된 마스크 및 층을 제조한다. 상기 방법은 열적결합섬유의 부직웨브를 냉각 주조하는 단계를 포함한다. 표면 퓨즈형성을 더욱 저하시키기 위해, 프레스킨처리 단계를 사용할 수 있다. 또한 표면 퓨즈가 낮은 정도로 유지되는 섬유상 여과성 얼굴 마스크가 개시되어 있다.

Description

섬유상 여과성 얼굴 마스크를 제조하는 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 얼굴 마스크의 전면도이다. 제2도는 성형층 및 여과층을 가진 얼굴 마스크의 단면도이다. 제3도는 본 발명에 따라 얼굴 마스크를 제조하기 위한 장치의 측면에 대한 부분 단면도이다.

Claims (29)

  1. (a) 약 10중량% 이상이 이성분 섬유인 부직섬유물질의 중량을 기준으로 약 40중량% 이상의 열적 결합섬유(ⅰ); 및 임의의 스테이플 섬유(ⅱ)를, 이성분 섬유중 하나이상의 섬유를 비롯한 열적 결합섬유가 연화되는 온도로 가열하는 단계; 및 이어서 (b) 상기 열적 결합섬유 및 이성분 섬유중 하나이상이 섬유가 여전히 유연한 상태에서 섬유물질의 비가열된 부직 웨브를, 이성분 섬유의 모든 성분을 비롯한 열적 결합 섬유의 연화점 이하 온도의 주조부재를 가진 주조를 내에서 주조하는 단계를 포함하는, 얼굴 마스크를 위한 부직 섬유 성형층을 제조하는 방법.
  2. 제1항에 있어서, 섬유 물질의 부직 웨브를 프레스킨 처리하는 단계를 부가로 포함하는 방법.
  3. 제1항에 있어서, 섬유물질의 부직웨브가 폴리에틸렌 테레프탈레이트 중심부와 변성 공중합올레핀 또는 무정형 공중합에스테르 외장을 가진 이성분 섬유를 포함하는 방법.
  4. 제3항에 있어서, 상기 섬유 물질의 부직 웨브를 약 110℃ 내지 230℃의 이격된 고온 캘린더 롤사이에 프레스킨 처리하는 방법.
  5. 제1항에 있어서, 상기 섬유 물질로 구성된 부직웨브의 수축을 방지하는 단계를 부가로 포함하는 방법.
  6. 제5항에 있어서, 공기 집진 장치, 테두리 벨트, 또는 테두리 후크로써 부직웨브를 제어함으로써 수축을 방지하는 방법.
  7. 제5항에 있어서, 부직웨브의 한면위에 공기 집진 장치를 설치함으로써 수축을 방지하는 방법.
  8. 제1항에 있어서, 상기 섬유물질의 부직웨브가 20중량% 이상의 이성분 섬유를 포함하는 방법.
  9. 제1항에 있어서, 상기 섬유 물질의 부직웨브가 50중량% 이상의 이성분 섬유를 포함하는 방법.
  10. 제1항에 있어서, 상기 섬유물질의 부직웨브의 주성분이 부직 웨브의 섬유중량을 기준을 20중량% 이상의 이성분 섬유, 0 내지 80중량%의 바인더 섬유, 및 0 내지 50중량%의 스테이플 섬유인 방법.
  11. (a) 열적 결합 섬유를 포함하는 부직섬유 웨브를 프레스킨 처리하는 단계; (b) 부직 섬유 웨브의 하나이상의 결합성분의 연화점 이상이 온도로 부직 섬유 웨브를 가열하는 단계; 및 (c) 열적 결합 섬유의 모든 성분의 연화점 이하 온도인 주조부재사이에서 부직 섬유 웨브를 주조하는 단계를 포함하는, 얼굴 마스크를 위한 부직 섬유 성형층을 제조하는 방법.
  12. 제11항에 있어서, 부직 섬유 웨브의 수축을 방지하는 단계를 부가로 포함하는 방법.
  13. 제10항에 있어서, 부직웨브의 한면에 공기 집진 장치를 적용시킴으로서 수축을 방지하는 방법.
  14. 제11항에 있어서, 상기 부직 섬유 웨브가 변성 공중합올레핀 또는 무정형 공중합에스테르를 포함하는 외장을 가진 20중량% 이상의 이성분 섬유를 포함하고, 상기 부직 섬유 웨브는 110℃ 내지 230℃의 이격된 고온 캘린더 롤사이에 프레스킨 처리하는 방법.
  15. 제11항에 있어서, 부직웨브가 부직 섬유웨브의 중량을 기준으로 20중량% 이상의 이성분 섬유를 포함하는 방법.
  16. 제11항에 있어서, 상기 부직 섬유 웨브의 주성분이 20중량% 이상의 이성분 섬유 0 내지 80중량%의 바인더 섬유, 및 0 내지 50중량%의 스테이플 섬유인 방법.
  17. (a) 약 10중량% 이상이 이성분 섬유인 부직섬유물질의 중량을 기준으로 약 40중량% 이상의 열적 결합섬유(ⅰ), 및 임의의 스테이플 섬유(ⅱ)를 포함하는 하나이상의 부직 섬유 물질층 및 하나이상의 여과물질층을 중첩된 상태로, 이성분 섬유의 하나이상의 섬유를 비롯한 열적 결합섬유가 연화되는 가열단계에 통과시키는 단계; 및 이어서 (b) 열적 결합섬유 및 이성분 섬유가 여전히 섬유 결합될 수 있는 상태에서 상기 중첩된 층을, 이성분 섬유의 하나이상의 연화성분을 비롯한 열적 결합 섬유의 연화점 이하 온도의 주조 부재내에서 얼굴 마스크 형태로 주조하는 단계를 포함하는, 섬유상 얼굴 마스크를 제조하는 방법.
  18. 제17항에 있어서, 하나이상의 부직섬유 물질층을 가열단계 동안에 수축되지 않도록 하며 이격된 고온 캘린더 롤사이에서 프레스킨 처리하는 방법.
  19. 제17항에 있어서, 상기 섬유물질의 부직 웨브가 75중량% 이상의 이성분 섬유를 포함하는 방법.
  20. 제17항에 있어서, 하나이상이 부직 섬유물질 층의 주성분이 20중량% 이상의 이성분 섬유, 0 내지 80중량%의 바인더 섬유, 및 0 내지 50중량%의 스테이플 섬유인 방법.
  21. 제1항의 방법을 통해 제조된 얼굴 마스크용 성형층.
  22. 제11항의 방법을 통해 제조된 얼굴 마스크용 성형층.
  23. 제17항의 방법을 통해 제조된 얼굴 마스크.
  24. 제23항의 얼굴 마스크를 인체의 호흡통로에 배치하는 단계를 포함하는, 인체로부터 배출된 공기중의 입자를 여과하는 방법.
  25. 착용자의 얼굴에 마스크를 고정하기 위한 수단(a); 및 약 10중량%이상이 이성분 섬유인 부직 섬유층중의 섬유의 중량을 기준으로 약 40중량% 이상의 열적 결합 섬유 (ⅰ), 및 임의의 스테이플 섬유(ⅱ)를 포함하고 상기 고정수단에 부착되며, 컵-형태로 주조되고 표면 퓨즈 마모테스트 이후의 표면퓨즈값은 7.5 이상인 부직 섬유층(b)을 포함하는, 오염물 및/또는 입상물질을 여과하기 위한 섬유상 얼굴 마스크.
  26. 제25항에 있어서, 약 60중량%의 이성분섬유 및 약 40중량%의 스테이플섬유로 구성되는 제1부직층, 약 70중량%의 이성분섬유 및 약 30중량%의 바인더 섬유로 구성되는 제2부직층을 비롯한, 열적 결합 결합섬유를 포함하는 2개 이상의 부직층을 포함하고, 제1층은 제2층의내부에 위치하며, 제1부직층과 제2부직층 사이에는 송풍 미세 섬유를 포함하는 여과층이 존재하는 얼굴 마스크.
  27. 제25항에 있어서, 상기 표면퓨즈값이 8.0 이상인 얼굴 마스크.
  28. 제25항에 있어서, 상기 표면퓨즈값이 9.0 이상인 얼굴 마스크.
  29. 제25항에 있어서, 상기 이성분 섬유 함량이 50중량%이상인 얼굴 마스크.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930701823A 1990-12-20 1991-11-15 섬유상 여과성 안면 마스크를 제조하는 방법 KR100221707B1 (ko)

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US07/632,964 US5307796A (en) 1990-12-20 1990-12-20 Methods of forming fibrous filtration face masks
US632,964 1990-12-20
PCT/US1991/008531 WO1992011405A1 (en) 1990-12-20 1991-11-15 Methods of forming fibrous filtration face masks

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Families Citing this family (157)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5150703A (en) 1987-10-02 1992-09-29 Tecnol Medical Products, Inc. Liquid shield visor for a surgical mask with a bottom notch to reduce glare
US5307796A (en) * 1990-12-20 1994-05-03 Minnesota Mining And Manufacturing Company Methods of forming fibrous filtration face masks
US5753343A (en) * 1992-08-04 1998-05-19 Minnesota Mining And Manufacturing Company Corrugated nonwoven webs of polymeric microfiber
US5643507A (en) * 1993-08-17 1997-07-01 Minnesota Mining And Manufacturing Company Filter media having an undulated surface
WO1995005232A1 (en) * 1993-08-17 1995-02-23 Minnesota Mining And Manufacturing Company Filter media having an undulated surface
US5695376A (en) * 1994-09-09 1997-12-09 Kimberly-Clark Worldwide, Inc. Thermoformable barrier nonwoven laminate
CZ296061B6 (cs) * 1994-10-13 2006-01-11 Respirátor
USD412573S (en) * 1994-10-14 1999-08-03 3M Innovative Properties Company Nose clip for a filtering face mask
CA2160282A1 (en) * 1995-02-14 1996-08-15 Michael R. Gildersleeve Supported membrane assembly
WO1996028216A1 (en) * 1995-03-09 1996-09-19 Minnesota Mining And Manufacturing Company Fold flat respirators and processes for preparing same
US5665235A (en) * 1995-05-09 1997-09-09 Pall Corporation Supported fibrous web assembly
DE19518285C2 (de) * 1995-05-18 2000-06-21 Lohmann Gmbh & Co Kg Mechanisch verfestigter Vliesstoff zur Herstellung von formstabilen Formteilen
US5620785A (en) * 1995-06-07 1997-04-15 Fiberweb North America, Inc. Meltblown barrier webs and processes of making same
US5804512A (en) * 1995-06-07 1998-09-08 Bba Nonwovens Simpsonville, Inc. Nonwoven laminate fabrics and processes of making same
US5817584A (en) * 1995-12-22 1998-10-06 Kimberly-Clark Worldwide, Inc. High efficiency breathing mask fabrics
US5851355A (en) * 1996-11-27 1998-12-22 Bba Nonwovens Simpsonville, Inc. Reverse osmosis support substrate and method for its manufacture
US6041782A (en) * 1997-06-24 2000-03-28 3M Innovative Properties Company Respiratory mask having comfortable inner cover web
US6732733B1 (en) 1997-10-03 2004-05-11 3M Innovative Properties Company Half-mask respirator with head harness assembly
US6062221A (en) 1997-10-03 2000-05-16 3M Innovative Properties Company Drop-down face mask assembly
GB9723740D0 (en) * 1997-11-11 1998-01-07 Minnesota Mining & Mfg Respiratory masks incorporating valves or other attached components
US6102039A (en) * 1997-12-01 2000-08-15 3M Innovative Properties Company Molded respirator containing sorbent particles
US6026511A (en) * 1997-12-05 2000-02-22 3M Innovative Properties Company Protective article having a transparent shield
US6161540A (en) * 1998-04-28 2000-12-19 Cabot Safety Intermediate Corporation Respirator filter having a pleated filter layer
EP0989221A3 (en) * 1998-09-22 2001-07-11 Tietex International Ltd. Breathable molded structure
US6139308A (en) * 1998-10-28 2000-10-31 3M Innovative Properties Company Uniform meltblown fibrous web and methods and apparatus for manufacturing
US6156680A (en) * 1998-12-23 2000-12-05 Bba Nonwovens Simpsonville, Inc. Reverse osmosis support substrate and method for its manufacture
US6604524B1 (en) 1999-10-19 2003-08-12 3M Innovative Properties Company Manner of attaching component elements to filtration material such as may be utilized in respiratory masks
US6729332B1 (en) 1999-10-22 2004-05-04 3M Innovative Properties Company Retention assembly with compression element and method of use
US6460539B1 (en) 2000-09-21 2002-10-08 3M Innovative Properties Company Respirator that includes an integral filter element, an exhalation valve, and impactor element
US7601262B1 (en) 2001-06-22 2009-10-13 Argonide Corporation Sub-micron filter
US6718981B2 (en) 2002-02-07 2004-04-13 Venanzio Cardarelli Dental mask
US6923182B2 (en) * 2002-07-18 2005-08-02 3M Innovative Properties Company Crush resistant filtering face mask
US6827764B2 (en) * 2002-07-25 2004-12-07 3M Innovative Properties Company Molded filter element that contains thermally bonded staple fibers and electrically-charged microfibers
US6988500B1 (en) 2003-05-15 2006-01-24 J. Palmero Sales Company, Inc. Fog free medical face mask
US6998009B2 (en) * 2003-06-10 2006-02-14 Ut-Battelle, Llc Filter and method of fabricating
SG115600A1 (en) * 2003-12-31 2005-10-28 Megatech Scientific Pte Ltd Respiratory mask with inserted spacer
US8057567B2 (en) 2004-11-05 2011-11-15 Donaldson Company, Inc. Filter medium and breather filter structure
US8021457B2 (en) * 2004-11-05 2011-09-20 Donaldson Company, Inc. Filter media and structure
CN101934172B (zh) * 2004-11-05 2016-06-08 唐纳森公司 过滤介质和结构
EA011777B1 (ru) 2005-02-04 2009-06-30 Дональдсон Компани, Инк. Фильтр и система вентиляции картера
WO2006091594A1 (en) 2005-02-22 2006-08-31 Donaldson Company, Inc. Aerosol separator
US20070023047A1 (en) * 2005-07-26 2007-02-01 Moshe Zalsman Face mask particularly useful as medical face mask
US8171933B2 (en) * 2005-08-25 2012-05-08 3M Innovative Properties Company Respirator having preloaded nose clip
US7390343B2 (en) * 2005-09-12 2008-06-24 Argonide Corporation Drinking water filtration device
US7311752B2 (en) * 2005-09-12 2007-12-25 Argonide Corporation Electrostatic air filter
US20070068529A1 (en) * 2005-09-27 2007-03-29 Suresh Kalatoor Respirator that uses a polymeric nose clip
US7503326B2 (en) * 2005-12-22 2009-03-17 3M Innovative Properties Company Filtering face mask with a unidirectional valve having a stiff unbiased flexible flap
US20070199567A1 (en) * 2006-01-25 2007-08-30 Kanzer Steve H Droplet collection devices and methods to detect and control airborne communicable diseases utilizing rfid
US8182568B2 (en) * 2006-04-26 2012-05-22 Volo Giovanni D Two-stage air filter and mask incorporating the same
ITPS20060012A1 (it) 2006-05-18 2007-11-19 Cl Com Srl Nuova maschera di protezione contro gli agenti biologici a due porzioni.
US9770058B2 (en) * 2006-07-17 2017-09-26 3M Innovative Properties Company Flat-fold respirator with monocomponent filtration/stiffening monolayer
US7905973B2 (en) * 2006-07-31 2011-03-15 3M Innovative Properties Company Molded monocomponent monolayer respirator
EA008896B1 (ru) * 2006-09-04 2007-08-31 Закрытое Акционерное Общество «Северо-Западный Научно-Технический Центр "Портативные Средства Индивидуальной Защиты" Имени А.А. Гуняева» Способ скрепления термопластичных слоистых материалов и устройство для его осуществления
DE102007050369A1 (de) * 2006-10-24 2008-04-30 Weinmann Geräte für Medizin GmbH + Co. KG Bebänderte Haltevorrichtung für Beatmungsmasken
US20080099022A1 (en) 2006-10-26 2008-05-01 3M Innovative Properties Company Respirator That Uses A Predefined Nose Foam Shape
EP2117674A1 (en) 2007-02-22 2009-11-18 Donaldson Company, Inc. Filter element and method
EP2125149A2 (en) 2007-02-23 2009-12-02 Donaldson Company, Inc. Formed filter element
US20080251209A1 (en) * 2007-04-16 2008-10-16 Hung-Ho Chen Automatic elastic band fusion apparatus for face mask
US20080271740A1 (en) 2007-05-03 2008-11-06 3M Innovative Properties Company Maintenance-free flat-fold respirator that includes a graspable tab
US20080271739A1 (en) 2007-05-03 2008-11-06 3M Innovative Properties Company Maintenance-free respirator that has concave portions on opposing sides of mask top section
US9770611B2 (en) 2007-05-03 2017-09-26 3M Innovative Properties Company Maintenance-free anti-fog respirator
US20090000624A1 (en) * 2007-06-28 2009-01-01 3M Innovative Properties Company Respirator having a harness and methods of making and fitting the same
US20090014006A1 (en) * 2007-07-10 2009-01-15 Levin Eric M Novelty mask cover
US8398793B2 (en) 2007-07-20 2013-03-19 Curt G. Joa, Inc. Apparatus and method for minimizing waste and improving quality and production in web processing operations
US9387131B2 (en) 2007-07-20 2016-07-12 Curt G. Joa, Inc. Apparatus and method for minimizing waste and improving quality and production in web processing operations by automated threading and re-threading of web materials
KR101580339B1 (ko) 2007-09-20 2015-12-23 쓰리엠 이노베이티브 프로퍼티즈 컴파니 확장가능한 마스크 본체를 구비하는 안면부 여과식 호흡기
US8066006B2 (en) * 2007-10-09 2011-11-29 3M Innovative Properties Company Filtering face-piece respirator having nose clip molded into the mask body
CN102553097A (zh) 2007-11-27 2012-07-11 3M创新有限公司 具有单向阀的面罩
KR101554052B1 (ko) * 2007-12-06 2015-09-17 쓰리엠 이노베이티브 프로퍼티즈 컴파니 전하 증대 접착제를 갖는 일렉트릿 웨브
US8061356B2 (en) 2008-02-19 2011-11-22 Prestige Ameritech Ltd. Directional flat face mask
US20090211581A1 (en) * 2008-02-26 2009-08-27 Vishal Bansal Respiratory mask with microporous membrane and activated carbon
US20090235934A1 (en) * 2008-03-24 2009-09-24 3M Innovative Properties Company Filtering face-piece respirator having an integrally-joined exhalation valve
JP2009254418A (ja) * 2008-04-11 2009-11-05 Three M Innovative Properties Co マスク用ノーズクリップ及びマスク
BRPI0909855A2 (pt) * 2008-06-02 2015-10-06 3M Innovative Properties Co "aditivos acentuadores de carga para eletretos"
AU2009255469B2 (en) * 2008-06-02 2012-03-29 3M Innovative Properties Company Electret webs with charge-enhancing additives
US7765698B2 (en) * 2008-06-02 2010-08-03 3M Innovative Properties Company Method of making electret articles based on zeta potential
US11083916B2 (en) 2008-12-18 2021-08-10 3M Innovative Properties Company Flat fold respirator having flanges disposed on the mask body
US8267681B2 (en) 2009-01-28 2012-09-18 Donaldson Company, Inc. Method and apparatus for forming a fibrous media
US20100252047A1 (en) * 2009-04-03 2010-10-07 Kirk Seth M Remote fluorination of fibrous filter webs
EP2470272B1 (en) 2009-09-11 2018-05-02 Breathe Safely Inc. Disposable filtering passive face mask with seal within seal and optional bridging seal
US8640704B2 (en) 2009-09-18 2014-02-04 3M Innovative Properties Company Flat-fold filtering face-piece respirator having structural weld pattern
JP2011092698A (ja) 2009-09-18 2011-05-12 Three M Innovative Properties Co 把持機構指標を有するフィルタ式顔面装着呼吸マスク
US8881729B2 (en) 2009-09-18 2014-11-11 3M Innovative Properties Company Horizontal flat-fold filtering face-piece respirator having indicia of symmetry
US8528560B2 (en) 2009-10-23 2013-09-10 3M Innovative Properties Company Filtering face-piece respirator having parallel line weld pattern in mask body
US8967147B2 (en) 2009-12-30 2015-03-03 3M Innovative Properties Company Filtering face-piece respirator having an auxetic mesh in the mask body
WO2011090588A2 (en) 2009-12-30 2011-07-28 3M Innovative Properties Company Method of making an auxetic mesh
US8176918B2 (en) * 2010-05-12 2012-05-15 Mei-Sheng Teng Three dimensional face mask
US20120017911A1 (en) 2010-07-26 2012-01-26 3M Innovative Properties Company Filtering face-piece respirator having foam shaping layer
US9603752B2 (en) 2010-08-05 2017-03-28 Curt G. Joa, Inc. Apparatus and method for minimizing waste and improving quality and production in web processing operations by automatic cuff defect correction
WO2012061831A1 (en) 2010-11-05 2012-05-10 Salutaris Llp Ergonomic protective air filtration devices and methods for manufacturing the same
US20120125341A1 (en) 2010-11-19 2012-05-24 3M Innovative Properties Company Filtering face-piece respirator having an overmolded face seal
TWI435741B (zh) 2010-11-22 2014-05-01 Kang Na Hsiung Entpr Co Ltd The method of manufacturing a cup-type masks and its products
US8794238B2 (en) 2010-12-28 2014-08-05 3M Innovative Properties Company Splash-fluid resistant filtering face-piece respirator
US20130063587A1 (en) 2011-03-09 2013-03-14 Curt G. Joa, Inc. Apparatus and method for minimizing waste and improving quality and production in web processing operations by automatic narrow web twist defect correction
JP5946622B2 (ja) * 2011-10-06 2016-07-06 Ｊｘエネルギー株式会社 網状体の製造方法
US9027554B2 (en) 2011-12-06 2015-05-12 3M Innovative Properties Company Respirator having foam shaping layer with recessed regions surrounding air passageways
US20130146061A1 (en) * 2011-12-09 2013-06-13 3M Innovative Properties Company Respirator made from in-situ air-laid web(s)
USD668395S1 (en) * 2012-03-20 2012-10-02 Joseph Stork Smith Blackout mask cover
US9108968B2 (en) 2012-04-25 2015-08-18 Ppg Industries Ohio, Inc. Methods for producing 1,5,7-triazabicyclo[4.4.0]dec-5-ene by reaction of a disubstituted carbodiimide and dipropylene triamine
US10245537B2 (en) 2012-05-07 2019-04-02 3M Innovative Properties Company Molded respirator having outer cover web joined to mesh
WO2014004066A1 (en) 2012-06-27 2014-01-03 Argonide Corporation Aluminized silicious sorbent and water purification device incorporating the same
US20140041671A1 (en) 2012-08-10 2014-02-13 3M Innovative Properties Company Refill filtering face-piece respirator
US20140182600A1 (en) 2012-12-27 2014-07-03 3M Innovative Properties Company Filtering face-piece respirator having welded indicia hidden in pleat
US11116998B2 (en) 2012-12-27 2021-09-14 3M Innovative Properties Company Filtering face-piece respirator having folded flange
US10182603B2 (en) 2012-12-27 2019-01-22 3M Innovative Properties Company Filtering face-piece respirator having strap-activated folded flange
US9408424B2 (en) 2013-01-10 2016-08-09 3M Innovative Properties Company Filtering face-piece respirator having a face seal comprising a water-vapor-breathable layer
US9259058B2 (en) 2013-02-01 2016-02-16 3M Innovative Properties Company Personal protective equipment strap retaining devices
US9247788B2 (en) 2013-02-01 2016-02-02 3M Innovative Properties Company Personal protective equipment strap retaining devices
WO2015006679A2 (en) 2013-07-11 2015-01-15 Aqua Turf International, Inc. Air filtration mask with opening front cover
CA2938424A1 (en) 2013-08-08 2015-02-12 Richard H. Koehler Face mask seal for use with respirator devices and surgical facemasks, having an anatomically defined geometry conforming to critical fit zones of human facial anatomy, and capable of being actively custom fitted to the user's face
US9603396B2 (en) 2013-08-29 2017-03-28 3M Innovative Properties Company Filtering face-piece respirator having nose notch
US9770057B2 (en) 2013-08-29 2017-09-26 3M Innovative Properties Company Filtering face-piece respirator having nose cushioning member
US10143864B2 (en) 2013-11-15 2018-12-04 3M Innovative Properties Company Respirator having noncircular centroid-mounted exhalation valve
CN103704906B (zh) * 2013-12-07 2016-06-29 成都和煦医疗科技有限公司 乳胶贴合棉蜂窝口罩及其生产工艺
WO2015130591A1 (en) 2014-02-27 2015-09-03 3M Innovative Properties Company Respirator having elastic straps having openwork structure
US10040621B2 (en) 2014-03-20 2018-08-07 3M Innovative Properties Company Filtering face-piece respirator dispenser
EP2957314B1 (en) * 2014-06-17 2018-03-21 ResMed Ltd. Seal forming portion, pad and cushion for a patient interface
US9868002B2 (en) 2014-07-17 2018-01-16 3M Innovative Properties Company Respirator including contrast layer
EP3182850B1 (en) 2014-08-18 2018-09-26 3M Innovative Properties Company Respirator including polymeric netting and method of forming same
BR112017008761A2 (pt) 2014-10-31 2017-12-19 3M Innovative Properties Co respirador que tem estrutura filtrante corrugada
GB201508114D0 (en) 2015-05-12 2015-06-24 3M Innovative Properties Co Respirator tab
US9463340B1 (en) 2015-05-20 2016-10-11 Marc Irwin Epstein Draping particulate filter for the nostrils and mouth and method of manufacture thereof
US9468783B1 (en) 2015-05-20 2016-10-18 Marc Irwin Epstein Draping particulate filter for the nostrils and mouth and method of manufacture thereof
USD788373S1 (en) * 2015-09-09 2017-05-30 Masket, LLC Filtering facemask holder
RU2015141569A (ru) 2015-09-30 2017-04-05 3М Инновейтив Пропертиз Компани Складной респиратор с лицевой маской и клапаном выдоха
WO2017066284A1 (en) 2015-10-12 2017-04-20 3M Innovative Properties Company Filtering face-piece respirator including functional material and method of forming same
US11213080B2 (en) 2015-11-11 2022-01-04 3M Innovative Properties Company Shape retaining flat-fold respirator
EP3393287A1 (en) * 2015-12-23 2018-10-31 O&M Halyard International Unlimited Company Facemask and method of manufacturing same
CA3036977A1 (en) 2016-09-16 2018-03-22 3M Innovative Properties Company Exhalation valve and respirator including same
WO2018081227A1 (en) 2016-10-28 2018-05-03 3M Innovative Properties Company Respirator including reinforcing element
RU2671037C2 (ru) 2017-03-17 2018-10-29 3М Инновейтив Пропертиз Компани Складной респиратор с лицевой маской типа ffp3
AU201712054S (en) * 2017-04-06 2017-05-02 Healthy Breath Ltd A Mask
USD837456S1 (en) 2017-05-11 2019-01-01 Medline Industries, Inc. Adjustable mask
US10850141B2 (en) 2017-05-11 2020-12-01 Medline Industries, Inc. Mask with self-adherent securement strap and methods therefor
CN110869110B (zh) 2017-07-14 2022-11-18 3M创新有限公司 用于输送多个液体流的适配器
USD844253S1 (en) * 2018-03-12 2019-03-26 Makrite Industries Inc. Face mask
USD892410S1 (en) * 2018-12-27 2020-08-04 Alexandru David Dust mask
WO2020261034A1 (en) 2019-06-28 2020-12-30 3M Innovative Properties Company Filter assembly, prefilter assembly, and respirator including the same
WO2020261150A1 (en) 2019-06-28 2020-12-30 3M Innovative Properties Company Core-sheath fibers, nonwoven fibrous web, and respirator including the same
US11219255B2 (en) 2020-04-08 2022-01-11 Terry Earl Brady Self-contained, mobile breathing apparatus or appliance that supplies pathogen and endotoxin free, rhythmically breathable air to the wearer or treated space through active, continuous bio-deactivation and destruction of bacteria, fungi, viral and allergenic/antigenic matter safely when using benign, household, rechargeable filtration media
DE112021000774T5 (de) 2020-04-08 2023-03-02 Formfiber Denmark Aps Verfahren zur herstellung eines filtrationsmaterials zur hygienischen verwendung und eines luftfiltrationsmaterials
TR202007418A2 (tr) * 2020-05-12 2021-01-21 Telasis Tekstil Ueruenleri San Tic A S Yüksek etki̇nli̇kte fi̇ltrasyon yüzeyleri̇ni̇n üreti̇m yöntemi̇ ve bunlarin maske üzeri̇nde uygulamasi
CN111501159A (zh) * 2020-05-26 2020-08-07 际华三五四二纺织有限公司 一种可水洗、可重复使用的口罩面料及其织造工艺
US20200376305A1 (en) 2020-06-10 2020-12-03 Noah Lang Personal protective equipment system for safe air, train or bus travel protecting against infectious agents including novel coronavirus - covid-19
JP1683242S (ja) * 2020-06-19 2021-04-12 防じんマスク
US11786853B2 (en) 2020-08-10 2023-10-17 F.N. Smith Corporation Facepiece electrostatic charging devices and methods thereof
USD991442S1 (en) * 2020-09-07 2023-07-04 Alexandru David Dust mask
USD968589S1 (en) * 2020-09-22 2022-11-01 Maria Ximena Osorio Face mask
USD941989S1 (en) * 2020-09-25 2022-01-25 Huhtamaki, Inc. Respiratory mask
USD960352S1 (en) * 2020-10-13 2022-08-09 Air Flo Labs, Llc Face mask
JP2023547466A (ja) 2020-11-02 2023-11-10 スリーエム イノベイティブ プロパティズ カンパニー コア－シース繊維、不織繊維ウェブ、及びそれを含む濾過物品
USD1025345S1 (en) * 2020-11-25 2024-04-30 Rootous System Inc. Air purification mask
US20230368239A1 (en) * 2020-11-30 2023-11-16 Wells Fargo Bank, N.A. System and method for sensor-based mask detection
WO2022130080A1 (en) 2020-12-18 2022-06-23 3M Innovative Properties Company Electrets comprising a substituted cyclotriphosphazene compound and articles therefrom
CN113279147A (zh) * 2021-05-11 2021-08-20 深圳市华必达科技有限公司 一种氧化石墨烯抗菌改性高强度熔喷无纺滤布及制法
USD982155S1 (en) * 2021-09-10 2023-03-28 Vitacore Industries Inc. Respirator with shield
USD983964S1 (en) * 2022-03-10 2023-04-18 Staeger Clear Packaging Limited Protective face mask

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064329A (en) * 1959-08-19 1962-11-20 Minnesota Mining & Mfg Molded nonwoven fabric articles
SE301692B (ko) * 1961-02-24 1968-06-17 Minnesota Mining & Mfg
US3320346A (en) * 1961-07-17 1967-05-16 Jantzen Inc Method of producing fabric laminated articles
US3225768A (en) * 1961-07-17 1965-12-28 Jantzen Inc Fabric laminated brassiere
US3167816A (en) * 1961-11-30 1965-02-02 Internat Fabric Molders Inc Apparatus for making brassieres and other garments
US3765998A (en) * 1971-01-11 1973-10-16 Allied Chem Shapable fiber-reinforced low molecular weight polyethylene terephthalate
US3799174A (en) * 1972-06-26 1974-03-26 Int Fabric Molders Inc Molded breast cup and method of making the same
US3891377A (en) * 1973-06-22 1975-06-24 Int Fabric Molders Inc Apparatus for fabric molding
US4258093A (en) * 1979-04-26 1981-03-24 Brunswick Corporation Molding nonwoven, needle punched fabrics into three dimensional shapes
FR2480807A1 (fr) * 1980-04-18 1981-10-23 Seplast Sa Procede de traitement superficiel d'une couche filtrante fibreuse, non tissee et tres aeree, formant electret et son application aux filtres et aux masques respiratoires notamment
US4850347A (en) * 1980-06-09 1989-07-25 Metric Products, Inc. Face mask
JPS59137552A (ja) * 1983-01-20 1984-08-07 チッソ株式会社 不織布
CA1243963A (en) 1983-02-01 1988-11-01 Harvey J. Berg Molded nonwoven shaped articles
US4547420A (en) * 1983-10-11 1985-10-15 Minnesota Mining And Manufacturing Company Bicomponent fibers and webs made therefrom
US4729371A (en) * 1983-10-11 1988-03-08 Minnesota Mining And Manufacturing Company Respirator comprised of blown bicomponent fibers
US4536440A (en) * 1984-03-27 1985-08-20 Minnesota Mining And Manufacturing Company Molded fibrous filtration products
US4807619A (en) * 1986-04-07 1989-02-28 Minnesota Mining And Manufacturing Company Resilient shape-retaining fibrous filtration face mask
JPH0791760B2 (ja) * 1986-10-17 1995-10-04 チッソ株式会社 不織布及びその製造方法
US5066351A (en) * 1987-05-20 1991-11-19 The Boeing Company Hot/cold press forming methods for shaping thermoformable materials
US4813948A (en) * 1987-09-01 1989-03-21 Minnesota Mining And Manufacturing Company Microwebs and nonwoven materials containing microwebs
DK245488D0 (da) * 1988-05-05 1988-05-05 Danaklon As Syntetisk fiber samt fremgangsmaade til fremstilling deraf
US4892695A (en) * 1988-06-10 1990-01-09 Manville Corporation Process for making a moldable fibrous mat
US5019311A (en) * 1989-02-23 1991-05-28 Koslow Technologies Corporation Process for the production of materials characterized by a continuous web matrix or force point bonding
GR1001027B (el) * 1989-04-07 1993-03-31 Johnson & Johnson Medical Βελτιωμενο μεσο φιλτραρισματος και μασκα καλυψεως προσωπου η οποια περιλαμβανει αυτο.
EP0410384B1 (en) * 1989-07-28 1995-04-05 Nippon Oil Co. Ltd. Process for the continuous production of high-strength and high-modulus polyethylene material
US5307796A (en) * 1990-12-20 1994-05-03 Minnesota Mining And Manufacturing Company Methods of forming fibrous filtration face masks

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JP3023173B2 (ja) 2000-03-21
WO1992011405A1 (en) 1992-07-09
MXPA94004036A (es) 2004-12-13
MX9102585A (es) 1992-07-01
AU651415B2 (en) 1994-07-21
EP0563135A1 (en) 1993-10-06
CA2096636C (en) 2003-02-25
AU9081891A (en) 1992-07-22
BR9107253A (pt) 1994-03-22
CA2096636A1 (en) 1992-06-21
JPH06504329A (ja) 1994-05-19
DE69104732T2 (de) 1995-05-11
EP0563135B1 (en) 1994-10-19
AR245791A1 (es) 1994-02-28
US5307796A (en) 1994-05-03
KR100221707B1 (ko) 1999-09-15
DE69104732D1 (de) 1994-11-24
US7131442B1 (en) 2006-11-07
DK0563135T3 (da) 1995-04-18

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