WO2016074219A1 - Milieu filtrant en carbone nontissé co-absorbant les cov/le formaldéhyde pour masque jetable - Google Patents

Milieu filtrant en carbone nontissé co-absorbant les cov/le formaldéhyde pour masque jetable Download PDF

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Publication number
WO2016074219A1
WO2016074219A1 PCT/CN2014/091112 CN2014091112W WO2016074219A1 WO 2016074219 A1 WO2016074219 A1 WO 2016074219A1 CN 2014091112 W CN2014091112 W CN 2014091112W WO 2016074219 A1 WO2016074219 A1 WO 2016074219A1
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WO
WIPO (PCT)
Prior art keywords
carbon
operable
carbon material
mask
filter
Prior art date
Application number
PCT/CN2014/091112
Other languages
English (en)
Inventor
Li Wang
Hailin LIU
Weifeng Shen
Yuzheng LU
Original Assignee
Honeywell International Inc.
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 Honeywell International Inc. filed Critical Honeywell International Inc.
Priority to PCT/CN2014/091112 priority Critical patent/WO2016074219A1/fr
Priority to CN201480083385.0A priority patent/CN107072339A/zh
Publication of WO2016074219A1 publication Critical patent/WO2016074219A1/fr

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Classifications

    • 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
    • A41D13/113—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a vertical fold or weld
    • 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

Definitions

  • PPE Personal protection equipment
  • Disposable masks may comprise filtration media, which may be made of melt-blown fibers and/or micro glass material. Filtration by a mask is accomplished when particles in the air are trapped in the matrix of the fibers contained in the filtration media of the mask. Disposable masks may also comprise filtration media operable to filter harmful chemicals in the air.
  • aspects of the disclosure may include embodiments of a method for forming a disposable mask comprising combining a first carbon material and a second carbon material, wherein the first carbon material is operable to effectively absorb nonpolar chemicals and the second carbon material is operable to effectively absorb polar chemicals; spreading the combined carbon materials over a layer of nonwoven material; heating the nonwoven filter material (via a hot press) to attach the carbon materials to the nonwoven filter material forming a chemical filter material; attaching the chemical filter material to a meltblown material operable to serve as a particulate filter; and attaching the chemical filter material to a second nonwoven material layer, wherein the meltblown particulate filter material is contained (e.g. sandwiched) between the two nonwoven material layers.
  • the first carbon material may be operable to effectively absorb volatile organic compounds (VOCs) and the second carbon material may be operable to effectively absorb formaldehyde.
  • the method may further comprise forming a foldable disposable mask shape with the filter materials and nonwoven material layers.
  • the method may further comprise forming a molded cup disposable mask shape with the filter materials and nonwoven material layers.
  • the meltblown material may comprise one of polypropylene, polyethylene, polyethylene terephthalate, or any combination thereof.
  • the combined carbon materials may comprise between 80 gsm and 150 gsm.
  • combining the carbon materials may comprise mixing with a high frequency vibrating equipment to provide homogenous mixing of the carbon materials.
  • the ratio of the first carbon material to the second carbon material may be approximately 1 to 1 (e.g. 50%of the first carbon material to 50%of the second carbon material) .
  • the method may further comprise selecting the ratio of the first and second carbon materials based on the expected conditions and environment.
  • the disposable mask may be operable to filter particulate matter of 0.3 micrometers or larger.
  • Additional aspects of the disclosure may include embodiments of a disposable mask comprising at least one nonwoven layer, wherein the nonwoven layer forms the outer surface of the mask; a layer of carbon filter material, wherein the layer of carbon filter material comprises a first carbon material and a second carbon material, wherein the first carbon material is operable to effectively absorb nonpolar chemicals and the second carbon material is operable to effectively absorb polar chemicals, and wherein the carbon materials are approximately homogenously mixed; a meltblown material operable to filter particulate matter, wherein the layer of carbon filter material is attached to the at least one nonwoven layer by heating the nonwoven layer.
  • the first carbon material may be effectively operable to absorb VOCs and the second carbon material may be effectively operable to absorb formaldehyde.
  • the disposable mask may comprise one of a flat fold shape and a molded cup shape.
  • the combined carbon materials may comprise between 80 gsm and 150 gsm.
  • the ratio of the first carbon to the second carbon in the layer of carbon filter material may be approximately 1 to 1.
  • aspects of the disclosure may include embodiments of a method for forming a disposable mask comprising selecting a ratio of a first carbon material and a second carbon material based on the expected conditions of mask use, wherein the first carbon material is operable to effectively absorb volatile organic compounds (VOCs) and the second carbon material is operable to effectively absorb formaldehyde; combining the first carbon material and the second carbon material using a high frequency vibrating equipment to provide approximately homogenous mixing; spreading the combined carbon materials over a layer of nonwoven material; heating the nonwoven filter material (via a hot press) to attach the carbon materials to the nonwoven filter material forming a chemical filter material; attaching the chemical filter material to a meltblown material operable to serve as a particulate filter of 0.3 micrometers or larger; and attaching the chemical filter material to a second nonwoven material layer, wherein the meltblown particulate filter material is contained (e.g. sandwiched) between the two nonwoven material layers.
  • VOCs volatile organic compounds
  • the ratio of the first carbon material to the second carbon material may be approximately 1 to 1 (e.g. 50%of the first carbon material to 50%of the second carbon material) .
  • the method may further comprise forming a foldable disposable mask shape with the filter materials and nonwoven material layers.
  • the method may further comprise forming a molded cup disposable mask shape with the filter materials and nonwoven material layers.
  • FIG. 1 illustrates an exemplary disposable flat fold face mask
  • FIG. 2 illustrates a cross section of the mask of FIG. 1.
  • phrases “in one embodiment, ” “according to one embodiment, ” and the like generally mean that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present invention, and may be included in more than one embodiment of the present invention (importantly, such phrases do not necessarily refer to the same embodiment) ;
  • ком ⁇ онент or feature may, ” “can, ” “could, ” “should, ” “would, ” “preferably, ” “possibly, ” “typically, ” “optionally, ” “for example, ” “often, ” or “might” (or other such language) be included or have a characteristic, that particular component or feature is not required to be included or to have the characteristic.
  • Such component or feature may be optionally included in some embodiments, or it may be excluded.
  • Embodiments relate generally to improved disposable masks and methods of forming disposable masks operable to filter (absorb) both polar and nonpolar chemicals.
  • the disposable mask may comprise a combination of at least two activated carbon filtration materials (or media) , wherein a first carbon material is operable to effectively absorb nonpolar chemicals (such as VOCs, for example) and a second carbon material is operable to effectively absorb polar chemicals (such as formaldehyde, for example) .
  • the chemical materials may be combined and may form a layer of a disposable mask.
  • the mask may also be operable to filter particulate matter.
  • FIG. 1 illustrates an embodiment of a disposable face mask 100, comprising a nonwoven fabric material 102 and one or more head straps 104 operable to hold the mask 100 against the face of a wearer.
  • the mask 100 comprises a flat foldable shape, wherein the mask may be folded flat and unfolded to fit over the face of a user.
  • the mask 100 may comprise a molded cup shape.
  • FIG. 2 illustrates a cross-section of the mask of FIG. 1.
  • the nonwoven fabric material 102 of the mask 100 may form a first layer.
  • the mask 100 may comprise a second layer 106 of carbon filter media (or material) , wherein the carbon filter material may be operable to filter (or absorb) chemicals from the air.
  • the mask 100 may comprise a third layer 108 of meltblown material, wherein the meltblown material may be operable to filter particulate matter from the air.
  • the disposable mask 100 may be operable to filter particulate matter of 0.3 micrometers or larger.
  • the nonwoven material 102 may form a fourth layer of the mask 100, wherein the nonwoven material 102 may form the outer and inner surfaces of the mask 100 with the other layers 106 and 108 sandwiched between the two layers of nonwoven fabric 102.
  • the inner surface 202 of the mask 100 may be the first layer (comprising nonwoven material 102) and the outer surface 204 may be the fourth layer (comprising nonwoven material 102) .
  • the layers may be in a different order, wherein the order of the layers of material may not change the filtration abilities of the different layers.
  • additional layers of filtration material may be added to the mask 100.
  • the mask 100 may meet the N95 U.S. standard for dust masks. Additionally, the mask 100 may meet the 8130 TSI standard for respirator masks.
  • the carbon filter media 106 may comprise at least two different carbon materials.
  • a first carbon material 210 (indicated by a plus symbol) may be operable to effectively absorb nonpolar chemicals
  • a second carbon material 211 (indicated by a circle) may be operable to effectively absorb polar chemicals, wherein the two carbon materials may be mixed to form the carbon filter media 106 of the mask 100.
  • the first carbon material 210 may be specifically configured to filter (absorb) VOCs.
  • the second carbon material 211 may be specifically configured to filter (absorb) formaldehyde.
  • the two (or more) carbon materials may be approximately homogenously mixed, such as by mixing with a high frequency vibrating equipment.
  • the mixture of the two carbon materials may be used in a mask 100 wherein air flow through the mask 100 (and therefore the carbon materials) is provided by the breathing of a user wearing the mask and not by fan operation.
  • the mixture of the two carbon materials may be used to filter chemicals from the air and not to filter chemicals from water, such as in a water filtration system.
  • the first carbon material 210 operable to filter nonpolar chemicals such as VOCs
  • the second carbon material 211 operable to filter polar chemicals such as formaldehyde (HCHO)
  • HCHO formaldehyde
  • the second carbon material 211 may be treated with a catalyst of manganese, cerium, or a combination thereof.
  • the combination of the two carbon materials may be operable to absorb more than approximately 70%of the polar and nonpolar chemicals from the air.
  • the combination of the two carbon materials may be operable to absorb more than approximately 75%of the VOCs and formaldehyde from the air.
  • the ratio of the two carbon materials may be approximately 1 to 1 (e.g. 50%of the first carbon material 210 to 50%of the second carbon material 211) . In other embodiments, however, the ratio of the carbon materials may be chosen (or adjusted) based on the expected conditions and environment in which the mask 100 will be used. For example, is it is expected that the environment will contain a higher amount of nonpolar chemical than polar chemicals, the amount of the first carbon material 210 may be greater than the amount of the second carbon material 211. In some embodiments, the total amount of the carbon materials 106 may be between about 80 grams per square meter (gsm) and about 150 gsm.
  • the total amount of the carbon materials 106 when the mask 100 comprises a flat foldable shape, may be between about 80 gsm and about 120 gsm. In some embodiments, when the mask 100 comprises a molded cup shape, the total amount of the carbon materials 106 may be between about 120 gsm and about 180 gsm.
  • the carbon filter media 106 may comprise a granular material.
  • the carbon material may comprise a granular material of 30/60 mesh size.
  • the thickness of the layer of carbon filter media 106 may be approximately 1.8 millimeters.
  • the BET (Brunauer–Emmett–Teller) specific surface area of the carbon material may be between 500-2000 square meters per gram.
  • the layers 102, 106, and 108 may be attached together by heating (and thereby at least partially melting) at least one of the layers.
  • the layer of carbon filter media 106 may be placed on (spread over) the layer of nonwoven material 102, and the combination may be heated (such as via a hot press) to attach the carbon materials 106 to the nonwoven material 102, thereby forming a chemical filter material 206.
  • Some embodiments of the disclosure may comprise methods of forming a disposable mask 100 (as described above) .
  • a first carbon material and a second carbon material may be combined, wherein the first carbon material may be operable to effectively absorb nonpolar chemicals and the second carbon material may be operable to effectively absorb polar chemicals.
  • the combined carbon materials may be spread over a nonwoven material, and the nonwoven material may be heated (via a hot press) to attach the carbon materials to the nonwoven filter material, forming a chemical filter material.
  • the chemical filter material may then be attached to a meltblown material operable to serve as a particulate filter.
  • the chemical filter material may be attached to a second nonwoven material layer, wherein the meltblown particulate filter material may be contained (e.g. sandwiched) between the two nonwoven material layers.
  • the first carbon material may be operable to effectively absorb VOCs and the second carbon material may be operable to effectively absorb formaldehyde.
  • a foldable disposable mask shaped may be formed with the filter materials and the nonwoven material layers.
  • a molded cup disposable mask shaped may be formed with the filter materials and the nonwoven material layers.
  • the meltblown material layer comprises one of polypropylene or polyethylene.
  • the combined carbon materials may comprise between about 80 gsm and about 150 gsm.
  • the total amount of the carbon materials may be between about 80 gsm and about 120 gsm.
  • the total amount of the carbon materials may be between about 120 gsm and about 180 gsm.
  • combining the carbon materials may comprise mixing with a high frequency vibrating equipment to provide homogenous mixing.
  • the carbon materials may be spread over the nonwoven material using high frequency vibration, thereby ensuring an approximately even spreading of the carbon material.
  • the ratio of the first carbon material to the second carbon material is approximately 1 to 1 (e.g. 50%of the first carbon material to 50%of the second carbon material) .
  • the ratio of the first and second carbon materials may be selected based on the expended conditions and environment in which the mask will be used.
  • the amount of the first carbon material may be larger than the amount of the second carbon material in the mixture of the carbon materials.
  • the disposable mask is operable to filter particulate matter of 0.3 micrometers or larger.
  • combining the first carbon and the second carbon comprises approximate homogenous mixing.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

Des modes de réalisation de l'invention concernent de manière générale des masques jetables et des procédés de formation de masques jetables fonctionnels pour filtrer (absorber) des produits chimiques polaires aussi bien que non polaires. Le masque jetable peut comprendre une combinaison d'au moins deux matériaux carbonés, un premier matériau carboné étant fonctionnel pour absorber efficacement des produits chimiques non polaire (tels que des composés organiques volatils, par exemple) et un second matériau carboné étant fonctionnel pour absorber efficacement des produits chimiques polaires (tels que le formaldéhyde, par exemple). Les matériaux chimiques peuvent être combinés et peuvent former une couche d'un masque jetable. Le masque peut également être utilisable pour filtrer une matière particulaire.
PCT/CN2014/091112 2014-11-14 2014-11-14 Milieu filtrant en carbone nontissé co-absorbant les cov/le formaldéhyde pour masque jetable WO2016074219A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2014/091112 WO2016074219A1 (fr) 2014-11-14 2014-11-14 Milieu filtrant en carbone nontissé co-absorbant les cov/le formaldéhyde pour masque jetable
CN201480083385.0A CN107072339A (zh) 2014-11-14 2014-11-14 用于可弃置面罩的可调节voc/甲醛共同吸收的非织造碳过滤介质

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/091112 WO2016074219A1 (fr) 2014-11-14 2014-11-14 Milieu filtrant en carbone nontissé co-absorbant les cov/le formaldéhyde pour masque jetable

Publications (1)

Publication Number Publication Date
WO2016074219A1 true WO2016074219A1 (fr) 2016-05-19

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CN (1) CN107072339A (fr)
WO (1) WO2016074219A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019100285A1 (fr) * 2017-11-23 2019-05-31 Honeywell International Inc. Système et procédé d'absorption d'humidité à l'intérieur d'un masque facial

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CN203469257U (zh) * 2013-08-30 2014-03-12 上海鸿纯贸易有限公司 一种户外运动口罩
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CN203692609U (zh) * 2014-01-26 2014-07-09 云南白药集团股份有限公司 一种雾霾防护口罩
CN203913463U (zh) * 2014-04-03 2014-11-05 建德市颐品科技发展有限公司 一种过滤pm2.5的抗菌防霾口罩立体滤芯

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KR20050102036A (ko) * 2004-04-20 2005-10-25 이바도 공기정화기용 그래파이트필터
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CN102029734A (zh) * 2010-09-30 2011-04-27 吴江市元通纺织品有限公司 一种多功能复合无纺布
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Publication number Priority date Publication date Assignee Title
CN201248380Y (zh) * 2008-05-09 2009-06-03 东莞市宇洁新材料有限公司 灰霾和臭氧空气防护口罩
CN202941439U (zh) * 2012-10-15 2013-05-22 建德市朝美日化有限公司 一种具有开口夹层的口罩
CN203469257U (zh) * 2013-08-30 2014-03-12 上海鸿纯贸易有限公司 一种户外运动口罩
CN203555203U (zh) * 2013-11-11 2014-04-23 上海兴诺康纶纤维科技股份有限公司 一种高效过滤pm2.5的口罩滤片
CN203692609U (zh) * 2014-01-26 2014-07-09 云南白药集团股份有限公司 一种雾霾防护口罩
CN203913463U (zh) * 2014-04-03 2014-11-05 建德市颐品科技发展有限公司 一种过滤pm2.5的抗菌防霾口罩立体滤芯

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019100285A1 (fr) * 2017-11-23 2019-05-31 Honeywell International Inc. Système et procédé d'absorption d'humidité à l'intérieur d'un masque facial
US11723421B2 (en) 2017-11-23 2023-08-15 Honeywell International Inc. System and method for absorbing moisture within a face mask

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