CA2312130A1 - Molded respirator containing sorbent particles - Google Patents

Molded respirator containing sorbent particles Download PDF

Info

Publication number
CA2312130A1
CA2312130A1 CA002312130A CA2312130A CA2312130A1 CA 2312130 A1 CA2312130 A1 CA 2312130A1 CA 002312130 A CA002312130 A CA 002312130A CA 2312130 A CA2312130 A CA 2312130A CA 2312130 A1 CA2312130 A1 CA 2312130A1
Authority
CA
Canada
Prior art keywords
particle
containing layer
molded
sorbent particles
containing sorbent
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002312130A
Other languages
French (fr)
Other versions
CA2312130C (en
Inventor
James E. Springett
Leonard W. Barrett
Roberta C. Harper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining And Manufacturing Company
James E. Springett
Leonard W. Barrett
Roberta C. Harper
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 Minnesota Mining And Manufacturing Company, James E. Springett, Leonard W. Barrett, Roberta C. Harper filed Critical Minnesota Mining And Manufacturing Company
Publication of CA2312130A1 publication Critical patent/CA2312130A1/en
Application granted granted Critical
Publication of CA2312130C publication Critical patent/CA2312130C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks

Abstract

Molded respirators containing an air-permeable, sorbent-particle-containing layer between air-permeable particle-retaining layers.
The particle-containing layer is stretchable during shaping without tearing or significant loss of particles. At least some of the fibers in the particle-containing layer are sufficiently tacky after being formed by themselves into a particle-free web and cooled to room temperature so that the web will adhere to itself. The respirators can be molded from flat webs without the need to fabricate the particle-containing layer into a shaped preform.
CA002312130A 1997-12-01 1998-04-13 Molded respirator containing sorbent particles Expired - Fee Related CA2312130C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/982,119 US6102039A (en) 1997-12-01 1997-12-01 Molded respirator containing sorbent particles
US08/982,119 1997-12-01
PCT/US1998/007529 WO1999028542A1 (en) 1997-12-01 1998-04-13 Molded respirator containing sorbent particles

Publications (2)

Publication Number Publication Date
CA2312130A1 true CA2312130A1 (en) 1999-06-10
CA2312130C CA2312130C (en) 2007-01-09

Family

ID=25528859

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002312130A Expired - Fee Related CA2312130C (en) 1997-12-01 1998-04-13 Molded respirator containing sorbent particles

Country Status (11)

Country Link
US (2) US6102039A (en)
EP (1) EP1036229B1 (en)
JP (1) JP4195188B2 (en)
KR (1) KR100506304B1 (en)
CN (1) CN1096513C (en)
AU (1) AU7117898A (en)
BR (1) BR9815117B1 (en)
CA (1) CA2312130C (en)
DE (1) DE69806635T2 (en)
ES (1) ES2179486T3 (en)
WO (1) WO1999028542A1 (en)

Families Citing this family (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6273938B1 (en) 1999-08-13 2001-08-14 3M Innovative Properties Company Channel flow filter
WO2002041717A2 (en) * 2000-11-27 2002-05-30 Kimberly-Clark Worldwide, Inc. Face mask filtration media with improved breathability
WO2002085426A2 (en) * 2001-04-24 2002-10-31 Ulrich Lersch Respiratory air filter
FR2828114B1 (en) * 2001-07-31 2004-04-02 Ahlstrom Res And Competence Ct MATERIAL BASED ON ORGANIC AND / OR INORGANIC FIBERS HAVING GERMICIDE PROPERTIES AND APPLICATIONS
US20040025879A1 (en) * 2001-11-09 2004-02-12 Wang Roger C.Y. Method and apparatus for filtering and adsorbing biological and chemical agents
US7677248B2 (en) * 2002-06-05 2010-03-16 Louis M. Gerson Co., Inc. Stiffened filter mask
WO2003103425A1 (en) * 2002-06-05 2003-12-18 Louis M. Gerson Co., Inc. Face mask and method of manufacturing the same
US6923182B2 (en) * 2002-07-18 2005-08-02 3M Innovative Properties Company Crush resistant filtering face mask
KR20110055576A (en) * 2002-09-16 2011-05-25 트리오신 홀딩 아이엔씨 Electrostatically charged filter media incorporating an active agent
US6905000B1 (en) * 2003-01-31 2005-06-14 Plantronics, Inc. Faceplate cover
AU2004261240A1 (en) * 2003-07-31 2005-02-10 Enviroscrub Technologies Corporation Metal oxide processing methods and systems
WO2005034659A2 (en) * 2003-08-11 2005-04-21 University Of Tennessee Research Foundation Fluorochemical electret treatment for barrier fabrics
JP2007508928A (en) * 2003-10-15 2007-04-12 インヴィスタ テクノロジー エスアエルエル Air filter to remove particulate matter and volatile organic compounds
US7650884B2 (en) * 2003-11-21 2010-01-26 3M Innovative Properties Company Respiratory facepiece and method of making a facepiece using separate molds
US8091550B2 (en) * 2003-12-22 2012-01-10 Kimberly-Clark Worldwide, Inc. Face mask having baffle layer for improved fluid resistance
US20050194010A1 (en) * 2004-03-05 2005-09-08 Sankot Philip W. Disposable contagion transmission prevention device and method of using a disposable contagion transmission prevention device
US20050217226A1 (en) * 2004-04-05 2005-10-06 3M Innovative Properties Company Pleated aligned web filter
US6858297B1 (en) 2004-04-05 2005-02-22 3M Innovative Properties Company Aligned fiber web
US7407701B2 (en) * 2004-07-30 2008-08-05 Kx Technologies Llc Lofted composite with enhanced air permeability
JP4053527B2 (en) * 2004-09-03 2008-02-27 淨植 林 Multilayer mask
US7973747B2 (en) 2004-10-28 2011-07-05 Panasonic Corporation Display and display driving method
US20060096911A1 (en) * 2004-11-08 2006-05-11 Brey Larry A Particle-containing fibrous web
US20060254427A1 (en) * 2004-11-08 2006-11-16 3M Innovative Properties Company Particle-containing fibrous web
DE102005054273A1 (en) * 2005-11-11 2007-05-16 Freudenberg Carl Kg Filter element for removing different sized particles from flowing fluid, contains porous filter material(s) with locally increasing or decreasing pore size
US8066005B2 (en) 2006-01-18 2011-11-29 Jing-Jyr Lin Complex respirator
JP4496173B2 (en) * 2006-01-20 2010-07-07 淨植 林 Mask with filter box
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
CN101036828A (en) * 2007-04-18 2007-09-19 林净植 Compound respirator
US9770611B2 (en) 2007-05-03 2017-09-26 3M Innovative Properties Company Maintenance-free anti-fog respirator
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
US7828969B2 (en) * 2007-08-07 2010-11-09 3M Innovative Properties Company Liquid filtration systems
AU2008302589B2 (en) 2007-09-20 2011-01-27 3M Innovative Properties Company Filtering face-piece respirator that has expandable mask body
US8061356B2 (en) * 2008-02-19 2011-11-22 Prestige Ameritech Ltd. Directional flat face mask
AU2009288177B2 (en) * 2008-09-02 2012-07-19 3M Innovative Properties Company Ammonia-free gaseous air filter
DE102008049927A1 (en) * 2008-10-02 2010-04-08 Carl Freudenberg Kg Ozone-resistant filter element
CN102292127B (en) * 2008-12-18 2013-07-17 3M创新有限公司 Filter element utilizing shaped particle-containing nonwoven web
US20110240027A1 (en) * 2008-12-18 2011-10-06 Billingsley Britton G Shaped layered particle-containing nonwoven web
US11083916B2 (en) 2008-12-18 2021-08-10 3M Innovative Properties Company Flat fold respirator having flanges disposed on the mask body
BRPI0918105A2 (en) 2008-12-22 2015-11-24 Koninkl Philips Electronics Nv respiratory interface device
EP2283901B1 (en) * 2009-08-14 2013-01-02 Moldex-Metric AG & Co. KG Filter material and respirator mask
US8881729B2 (en) 2009-09-18 2014-11-11 3M Innovative Properties Company Horizontal flat-fold filtering face-piece respirator having indicia of symmetry
US8617295B2 (en) * 2009-09-30 2013-12-31 3M Innovative Properties Company Active-particulate air filter having monolith primary filter and polishing filter
CA2786867C (en) * 2010-01-18 2022-01-04 3M Innovative Properties Company Air filter with sorbent particles
US8176918B2 (en) * 2010-05-12 2012-05-15 Mei-Sheng Teng Three dimensional face mask
US20130108831A1 (en) * 2010-07-07 2013-05-02 3M Innovative Properties Company Patterned air-laid nonwoven electret fibrous webs and methods of making and using same
US8585808B2 (en) 2010-11-08 2013-11-19 3M Innovative Properties Company Zinc oxide containing filter media and methods of forming the same
US20120125341A1 (en) 2010-11-19 2012-05-24 3M Innovative Properties Company Filtering face-piece respirator having an overmolded face seal
US20130146061A1 (en) * 2011-12-09 2013-06-13 3M Innovative Properties Company Respirator made from in-situ air-laid web(s)
US9421707B2 (en) * 2012-10-05 2016-08-23 Honeywell International Inc. Nanofiber filtering material for disposable/reusable respirators
US9446547B2 (en) * 2012-10-05 2016-09-20 Honeywell International Inc. Nanofiber filtering material for disposable/reusable respirators
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
USD746439S1 (en) * 2013-12-30 2015-12-29 Kimberly-Clark Worldwide, Inc. Combination valve and buckle set for disposable respirators
EP3110525A4 (en) 2014-02-28 2018-03-21 3M Innovative Properties Company Filtration medium including polymeric netting of ribbons and strands
US10040621B2 (en) 2014-03-20 2018-08-07 3M Innovative Properties Company Filtering face-piece respirator dispenser
JP2017525862A (en) 2014-08-18 2017-09-07 スリーエム イノベイティブ プロパティズ カンパニー Respirator comprising a polymer net and method for forming a respirator comprising a polymer net
GB201421616D0 (en) 2014-12-04 2015-01-21 3M Innovative Properties Co Respirator headband
US10201198B2 (en) * 2014-12-23 2019-02-12 Profit Royal Pharmaceutical Limited Protective masks with coating comprising different electrospun fibers interweaved with each other, formulations forming the same, and method of producing thereof
JP2016202373A (en) * 2015-04-17 2016-12-08 スリーエム イノベイティブ プロパティズ カンパニー Filter unit
GB201508114D0 (en) 2015-05-12 2015-06-24 3M Innovative Properties Co Respirator tab
WO2017066284A1 (en) 2015-10-12 2017-04-20 3M Innovative Properties Company Filtering face-piece respirator including functional material and method of forming same
EP3374035B1 (en) 2015-11-11 2020-12-23 3M Innovative Properties Company Shape retaining flat-fold respirator
JP2019518154A (en) * 2016-06-06 2019-06-27 ワークセイフ テクノロジーズＷｏｒｋｓａｆｅ Ｔｅｃｈｎｏｌｏｇｉｅｓ Seismic isolation system with load bearing surface with polymeric material
USD843562S1 (en) * 2016-09-16 2019-03-19 3M Innovative Properties Company Valve cover with diamond pattern
USD827811S1 (en) * 2016-09-16 2018-09-04 3M Innovative Properties Company Valve cover
USD842983S1 (en) * 2016-09-16 2019-03-12 3M Innovative Properties Company Valve cover
USD849245S1 (en) * 2016-09-16 2019-05-21 3M Innovative Properties Company Valve cover
USD827812S1 (en) * 2016-09-16 2018-09-04 3M Innovative Properties Company Valve cover with openings
USD828546S1 (en) * 2016-09-16 2018-09-11 3M Innovative Properties Company Valve cover with openings
USD882758S1 (en) * 2016-09-16 2020-04-28 3M Innovative Properties Company Valve cover
USD900306S1 (en) * 2016-09-16 2020-10-27 3M Innovative Properties Company Valve cover
MX2019004911A (en) 2016-10-28 2019-06-12 3M Innovative Properties Co Respirator including reinforcing element.
WO2018094472A1 (en) * 2016-11-28 2018-05-31 Clean Stream Technologies Respirator mask
US10864349B2 (en) * 2017-02-02 2020-12-15 Argos Corporation System and method for packaging an elongate medical device
WO2019012399A1 (en) 2017-07-14 2019-01-17 3M Innovative Properties Company Adapter for conveying plural liquid streams
EP3674452A1 (en) * 2018-12-28 2020-07-01 Lenzing Aktiengesellschaft Spinneret, method of heating a spinneret and lyocell process
US11027157B1 (en) * 2020-04-08 2021-06-08 John S. Mortimer Face covering apparatus and method of using the same
CN115443181A (en) * 2020-04-21 2022-12-06 奥升德功能材料运营有限公司 Filter material and mask having antimicrobial or antiviral properties
US11406144B2 (en) * 2020-05-20 2022-08-09 Anil Kapila Surgical face mask gripper to improve particulate filtering efficiency
CN111530167B (en) * 2020-05-22 2021-03-02 江苏睿泽环保科技有限公司 Filter element based on charge adsorption filtration principle for nuclear water filtration and preparation method thereof
US11930867B2 (en) 2020-07-30 2024-03-19 Fxi Inc. Limited Coated substrates and articles with anti-viral properties, and fabrication processes
RU201699U1 (en) * 2020-08-20 2020-12-28 Евгений Николаевич Коптяев MASK
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
CN113291002B (en) * 2021-03-10 2023-02-21 广东茂业医疗科技有限公司 Antibacterial and antiviral mask containing cuprous oxide
USD982155S1 (en) * 2021-09-10 2023-03-28 Vitacore Industries Inc. Respirator with shield
KR102403042B1 (en) * 2021-12-14 2022-05-27 김재청 Manufacturing method of Mask with enhanced efficiency of fabric supply

Family Cites Families (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US31285A (en) * 1861-01-29 Making- finger-guards for harvesters
US2988469A (en) * 1959-12-22 1961-06-13 American Viscose Corp Method for the production of reticulated webs
US3849241A (en) * 1968-12-23 1974-11-19 Exxon Research Engineering Co Non-woven mats by melt blowing
US3801400A (en) * 1972-03-24 1974-04-02 Celanese Corp Varying density cartridge filters
US3825379A (en) * 1972-04-10 1974-07-23 Exxon Research Engineering Co Melt-blowing die using capillary tubes
US3971373A (en) * 1974-01-21 1976-07-27 Minnesota Mining And Manufacturing Company Particle-loaded microfiber sheet product and respirators made therefrom
US4103058A (en) * 1974-09-20 1978-07-25 Minnesota Mining And Manufacturing Company Pillowed web of blown microfibers
US3954697A (en) * 1975-03-31 1976-05-04 Eastman Kodak Company Poly(higher-1-olefin-co-propylene) copolymers as hot-melt, pressure-sensitive adhesives
NL181632C (en) 1976-12-23 1987-10-01 Minnesota Mining & Mfg ELECTRIC FILTER AND METHOD FOR MANUFACTURING THAT.
US4215682A (en) * 1978-02-06 1980-08-05 Minnesota Mining And Manufacturing Company Melt-blown fibrous electrets
WO1981001019A1 (en) * 1979-10-09 1981-04-16 L Giffard Respiratory mask and filtering material included therein
US4379201A (en) * 1981-03-30 1983-04-05 Minnesota Mining And Manufacturing Company Multiacrylate cross-linking agents in pressure-sensitive photoadhesives
US4384577A (en) * 1981-04-03 1983-05-24 Moldex/Metric Products, Inc. Disposable face mask
US4454881A (en) * 1981-08-21 1984-06-19 Moldex/Metric Products, Inc. Multi-layer face mask with molded edge bead
US4429001A (en) * 1982-03-04 1984-01-31 Minnesota Mining And Manufacturing Company Sheet product containing sorbent particulate material
US4554324A (en) * 1982-09-16 1985-11-19 Minnesota Mining And Manufacturing Co. Acrylate copolymer pressure-sensitive adhesive composition and sheet materials coated therewith
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
US4843134A (en) * 1984-03-28 1989-06-27 Minnesota Mining And Manufacturing Company Acrylate pressure-sensitive adhesives containing insolubles
US4619979A (en) * 1984-03-28 1986-10-28 Minnesota Mining And Manufacturing Company Continuous free radial polymerization in a wiped-surface reactor
US4684576A (en) * 1984-08-15 1987-08-04 The Dow Chemical Company Maleic anhydride grafts of olefin polymers
US4807619A (en) * 1986-04-07 1989-02-28 Minnesota Mining And Manufacturing Company Resilient shape-retaining fibrous filtration face mask
US4737559A (en) * 1986-05-19 1988-04-12 Minnesota Mining And Manufacturing Co. Pressure-sensitive adhesive crosslinked by copolymerizable aromatic ketone monomers
US4797318A (en) * 1986-07-31 1989-01-10 Kimberly-Clark Corporation Active particle-containing nonwoven material, method of formation thereof, and uses thereof
US4741949A (en) * 1986-10-15 1988-05-03 Kimberly-Clark Corporation Elastic polyetherester nonwoven web
DE3719420A1 (en) * 1987-06-11 1988-12-29 Sandler Helmut Helsa Werke RESPIRATORY MASK
US4873972A (en) * 1988-02-04 1989-10-17 Moldex/Metric Products, Inc. Disposable filter respirator with inner molded face flange
US5149468A (en) * 1989-11-17 1992-09-22 Moldex/Metric Products, Inc. Method for producing filter material formed of melt-blown non-woven mat sandwiching additional material
US5307796A (en) * 1990-12-20 1994-05-03 Minnesota Mining And Manufacturing Company Methods of forming fibrous filtration face masks
US5190812A (en) * 1991-09-30 1993-03-02 Minnesota Mining And Manufacturing Company Film materials based on multi-layer blown microfibers
US5248455A (en) * 1991-09-30 1993-09-28 Minnesota Mining And Manufacturing Company Method of making transparent film from multilayer blown microfibers
US5258220A (en) * 1991-09-30 1993-11-02 Minnesota Mining And Manufacturing Company Wipe materials based on multi-layer blown microfibers
US5238733A (en) * 1991-09-30 1993-08-24 Minnesota Mining And Manufacturing Company Stretchable nonwoven webs based on multi-layer blown microfibers
US5306545A (en) * 1991-12-11 1994-04-26 Mitsui Petrochemical Industries, Ltd. Melt-blown non-woven fabric and laminated non-woven fabric material using the same
US5753343A (en) * 1992-08-04 1998-05-19 Minnesota Mining And Manufacturing Company Corrugated nonwoven webs of polymeric microfiber
US5382400A (en) * 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same
EP0825286A3 (en) * 1992-11-18 2000-11-02 AQF Technologies LLC Fibrous structure containing immobilized particulate matter and process therefor
US5662728A (en) * 1992-12-31 1997-09-02 Hoechst Celanese Corporation Particulate filter structure
JPH06335534A (en) * 1993-05-28 1994-12-06 Tetsuya Nishino Protective mask and its production
DE69417041T2 (en) * 1993-08-17 1999-07-15 Minnesota Mining & Mfg METHOD FOR CHARGING ELECTRIC FILTER MEDIA
US5658640A (en) * 1993-08-17 1997-08-19 Minnesota Mining And Manufacturing Company Electret filter media having an undulated surface
JP3360377B2 (en) * 1993-10-04 2002-12-24 チッソ株式会社 Melt blow spinneret
US5506279A (en) * 1993-10-13 1996-04-09 Minnesota Mining And Manufacturing Company Acrylamido functional disubstituted acetyl aryl ketone photoinitiators
US5462538A (en) * 1993-12-16 1995-10-31 Mcneil-Ppc, Inc. Molten adhesive fibers and products made therefrom
JPH07185249A (en) * 1993-12-27 1995-07-25 Japan Vilene Co Ltd Deodorant filter
EP0779853B1 (en) * 1994-09-09 1999-05-06 Minnesota Mining And Manufacturing Company Method of making a packaged hot melt adhesive
US5560878A (en) * 1994-11-30 1996-10-01 The Procter & Gamble Company Method and apparatus for making stretchable absorbent articles
US5620785A (en) * 1995-06-07 1997-04-15 Fiberweb North America, Inc. Meltblown barrier webs and processes of making same
UA28104C2 (en) * 1995-06-30 2000-10-16 Кімберлі-Кларк Уорлдвайд Інк. Multi-component fiber, non-woven material and articles made of that material
US5696199A (en) * 1995-12-07 1997-12-09 Minnesota Mining And Manufacturing Company Pressure-sensitive adhesive polyacrylate polymer and method of making
US5637646A (en) * 1995-12-14 1997-06-10 Minnesota Mining And Manufacturing Company Bulk radical polymerization using a batch reactor
AU1718497A (en) * 1996-02-12 1997-09-02 Borealis As Particle-containing fibres
US5883026A (en) * 1997-02-27 1999-03-16 Kimberly-Clark Worldwide, Inc. Face masks including a spunbonded/meltblown/spunbonded laminate
US6007914A (en) 1997-12-01 1999-12-28 3M Innovative Properties Company Fibers of polydiorganosiloxane polyurea copolymers

Also Published As

Publication number Publication date
JP4195188B2 (en) 2008-12-10
BR9815117B1 (en) 2008-11-18
CN1285012A (en) 2001-02-21
JP2001525201A (en) 2001-12-11
EP1036229B1 (en) 2002-07-17
US6102039A (en) 2000-08-15
ES2179486T3 (en) 2003-01-16
CA2312130C (en) 2007-01-09
DE69806635D1 (en) 2002-08-22
BR9815117A (en) 2000-10-10
CN1096513C (en) 2002-12-18
KR100506304B1 (en) 2005-08-05
DE69806635T2 (en) 2005-10-13
AU7117898A (en) 1999-06-16
KR20010032629A (en) 2001-04-25
EP1036229A1 (en) 2000-09-20
WO1999028542A1 (en) 1999-06-10
US6234171B1 (en) 2001-05-22

Similar Documents

Publication Publication Date Title
CA2312130A1 (en) Molded respirator containing sorbent particles
CA2214603A1 (en) Thermally bonded viral barrier composite
CA2204895A1 (en) Method and apparatus for making stretchable absorbent articles
EP1254693A3 (en) Air filter with electrostatically active fabric layer and its use
CA2102361A1 (en) Method of Making Mats of Chopped Fibrous Material
CA2237665A1 (en) Permeable, shaped structures of active particulate bonded with psa polymer microparticulate
CA2302530A1 (en) Breathable elastic film and laminate
AU4409696A (en) A breathable non-woven composite fabric
DE69312087D1 (en) POLYBENZAZOLE FIBERS WITH ULTRA-HIGH PHYSICAL PROPERTIES AND METHOD FOR THE PRODUCTION THEREOF
CA2056330A1 (en) Method of fabricating a complex part made of composite material
CA2029565A1 (en) Fragrance sampling device
AU2598095A (en) Air brake monitoring and safety system
IE46009L (en) Superficially porous macroparticles
GR900100242A (en) Electrostatically loaded mask for covering the face and method for fabricating it
CA2114303A1 (en) Method of making sorbent articles
CA2224857A1 (en) Synthetic filter media and method for manufacturing same
EP0701249A3 (en) Negative pressure air bearing sliders
CA2209402A1 (en) Filter media web product
AU4384097A (en) A nonwoven composite, a method for the production thereof and a use thereof
DE69305080D1 (en) ALGINATE FIBERS WITH DELAYED ACTIVE SUBSTANCE RELEASE AND METHOD FOR THE PRODUCTION THEREOF
EP0391726A3 (en) Improved filtration medium and face mask containing the same
DE69512975D1 (en) Deposited composite film and production thereof
CA2074386A1 (en) Catalytic composite for deodorizing odorous gases and a method for preparing the same
WO2002026463A3 (en) Process of making simultaneously molded laminates
WO2004050976A3 (en) Moldable composite material and method of producing same

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed