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WO2012069147A1 - Masque facial à matériau absorbant pulvérulent déposé sur des fibres discontinues chargées électrostatiquement - Google Patents

Masque facial à matériau absorbant pulvérulent déposé sur des fibres discontinues chargées électrostatiquement Download PDF

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Publication number
WO2012069147A1
WO2012069147A1 PCT/EP2011/005694 EP2011005694W WO2012069147A1 WO 2012069147 A1 WO2012069147 A1 WO 2012069147A1 EP 2011005694 W EP2011005694 W EP 2011005694W WO 2012069147 A1 WO2012069147 A1 WO 2012069147A1
Authority
WO
WIPO (PCT)
Prior art keywords
face mask
mask according
fibers
electrostatically charged
layers
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.)
Ceased
Application number
PCT/EP2011/005694
Other languages
German (de)
English (en)
Inventor
Jan Schultink
Ralf Sauer
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.)
Eurofilters NV
Original Assignee
Eurofilters NV
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 Eurofilters NV filed Critical Eurofilters NV
Publication of WO2012069147A1 publication Critical patent/WO2012069147A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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

  • the present invention relates to a face mask comprising a filter material having at least one intermediate layer between the inner layer and the outer layer.
  • the intermediate layer of electrostatically charged staple fibers and / or electrostatically charged filaments and / or formed from fiber networks, wherein on the fibers of the intermediate layer superficially a powdered absorbent material is applied.
  • Respiratory masks with a multilayer construction of nonwovens are known.
  • WO 2010/023370 discloses a multilayer composite consisting of an outer layer of spunbonded fabric, a first felt-like intermediate layer of a triboelectrically charged fiber mixture, a second intermediate layer of electrostatically charged meltblown and an inner layer of spunbonded nonwoven fabric. Also known are respiratory masks with a multilayer construction of nonwovens and an odor-absorbing layer.
  • US 2008/0110469 discloses a multilayer face mask wherein the layers of the filter material may consist of triboelectric fiber blends.
  • the layers of the filter material may consist of triboelectric fiber blends.
  • an intermediate layer of flexible activated carbon can be provided, which is laminated between two layers of fiber material.
  • Another option is a thin intermediate layer of "carbon impregnated
  • Nonwoven fiber "provided.
  • a filtering layer which may contain activated carbon or may be electrostatically charged.
  • the layers should be connected to each other at the outer edge of the mask.
  • the filtering layer can be made of meltblown or electrostatically charged split fibers
  • Electrode charged fibrillated film fibers or also consist of glass fiber or fibers produced by electrospinning. It is described as advantageous to introduce absorbent particles, in particular activated carbon, in the filter layer.
  • US 6,070,578 describes a face mask for hunters in which the exhaled air to be freed of odors.
  • a fabric of activated carbon fibers (95-115 g / m 2 ) is arranged between two layers of a scrim.
  • US 5,269,294 discloses an odor-reducing face mask in which a layer of a porous Mate ⁇ material is impregnated with an odor-absorbing agent.
  • the agent is a mo ⁇ d es molecular sieve zeolite-based.
  • Activated carbon fibers are very powerful but also very expensive. Accordingly, woven carbon fiber fabrics are also very expensive and, because they are not weldable, make it difficult to inexpensively and simply package face masks.
  • the activated carbon particles are bonded together or with a porous support material. In doing so, the active area and thus the efficiency is lost. The lack of weldability of the activated carbon particles complicates the packaging as well as the activated carbon fibers.
  • a face mask which comprises a filter material comprising at least one face-facing layer and at least one outer layer, wherein at least the at least one interlayer contains electrostatically charged staple fibers and / or electrostatically charged filaments and / or fiber networks consists thereof, wherein on the fibers of the intermediate layer superficially a powdered absorbent material is applied.
  • the invention is therefore characterized in particular by the fact that the intermediate layer consists of fibers or that it contains fibers in which a pulverulent absorption material is applied to electrostatically charged staple fibers and / or electrostatically charged filaments and / or fiber networks.
  • the intermediate layer consists of fibers or that it contains fibers in which a pulverulent absorption material is applied to electrostatically charged staple fibers and / or electrostatically charged filaments and / or fiber networks.
  • Additives which are usually the educts used to produce Position of the fibers are used, eg.
  • Polypropylene are known in the art.
  • Preferred additives which act to stabilize charge are metal stearates, e.g.
  • the staple fibers and / or filaments may also form a triboelectric fiber blend.
  • the triboelectric charge may be e.g. also in the production of the middle layer by contact of two contacting fibers having a different dielectric constant form.
  • the fibers forming the at least one intermediate layer are charged electrostatically, so that good adhesion of the pulverulent absorption material is achieved.
  • the absorption material is preferably applied in an amount of 1 to 50% by weight, preferably 7 to 25% by weight, based on the electrostatically charged staple fibers and / or filaments. It has been shown that by the amounts mentioned above, an almost complete occupancy of the fibers is achieved. Greater than 50% does not significantly improve odor adsorption, but smaller than 1% can not provide a positive odor adsorption effect.
  • hydrophobic zeolites, hydrophobic porous polymers and / or crystalline organometallic complexes and / or mixtures thereof are preferred as absorption materials in the invention, activated carbon being excluded as the absorption material.
  • Particularly preferred absorption materials are zeolites and / or porous polymers.
  • the zeolites In the zeolites is essential for the suitability that the micropores of zeolites have a sufficient size. Only above a diameter of> 5 ⁇ , the micropores are able to absorb and bind typical odor molecules. In addition, the zeolite must have a strongly hydrophobic (non-polar) character. Only from a ratio of
  • a zeolite is sufficiently nonpolar to bind the odor molecules.
  • Particular preference is given to zeolites with a modulus> 300.
  • the surface area exceeds 400 m 2 / g.
  • the particle size of the zeolites used in the invention is 2 to 30 microns.
  • the total pore volume is above 0.2 m 3 / g, but it can also be used agglomerates of these particles. In this case, a higher total pore volume can be realized by the resulting macropores.
  • Such zeolites are accessible, for example, by dialyzing the types Y, 13C, ZSM5 and beta.
  • fill earth In addition to the zeolites and bentonites, especially "filler earth” are suitable.
  • zeolites For the zeolites, the commercially available types DAY (Degussa) and TZB 9013 (Tricat) and DALY (Tricat) have proven to be well suited.
  • hydrophobic macroporous (macro-reticular) polymers as absorption materials.
  • a typical representative of these hydrophobic polymers is the crosslinked SDVB (styrenedivinylbenzene). It is formed by copoly- merization of styrene with divinylbenzene in the presence of so-called porogens (pore formers).
  • porogens pore formers.
  • Preference is given to using hydrophobic variants having a surface area of> 600 g / m 2 and micropores of 6 to 20 ⁇ , and the highest possible proportion of mesopores (20 to 500 ⁇ ) and macropores (> 500 ⁇ ). The average
  • Pore diameter is preferably between 3 and
  • the particle size is between 1 and 500 ⁇ m. Preference is given to particles having a particle size of 1 to 200 ⁇ m.
  • the pore volume of such products is typically> 0.4 cm 3 / g.
  • Such macroporous hydrophobic polymers can be purchased from Rohm & Haas (Amberlite), Purolite (Makronet), Dow Chemicals (Optipore), Mitsubishi Chemical Company (Sepabeads), and Bayer (IONAC).
  • a coating of the charged fibers with porous crystalline organometallic complexes such as "MOF-177.” This adsorbent realizes an extremely high surface area (4500 m / g) with sufficiently large micropores (10 ⁇ ) .These crystals are described in Nature , Vol. 427, pp. 253-527, February 2004. Reference is made to the disclosure of this document.
  • the fibers of the intermediate layer used according to the invention which are provided with the absorbent material as described above, are preferably chemical fibers.
  • the synthetic fibers are synthetic fibers. Examples of synthetic fibers are fibers of polyolefins, polyesters, polyamides,
  • the fibers it is preferable for the fibers to be branched, crimped, hollow and / or textured and / or to be non-circular. have a shaped cross-section (eg, trilobal) cross-section. From the dimensions forth, it is advantageous if the fibers have an average length between 0.3 and 100 mm, preferably between 0.5 and 70 mm.
  • the synthetic fibers can also be antibacterial. This can be done by adding antibacterial substances already during production. The advantage of these fibers is that the antibacterial substances are practically not released and no reduction of the antibacterial effect occurs. Such fibers are available from Rhovyl in F-55310 Tronville
  • Barrois e.g. the fibers Rhovyl 'A.S. + ®, or Japan Exlan Co. Ltd., Tokyo and Sterling Fibers
  • the at least one intermediate layer of the face mask according to the invention preferably consists of split fibers or triboelectric staple fiber mixture.
  • the middle layer can also be present as a nonwoven fabric layer, wherein the nonwoven fabric layer can also be needled.
  • a fiber network is also suitable. A fiber network in the context of the invention arises when profiled films are split.
  • the invention is not subject to any form with regard to the at least one intermediate layer
  • the domestic nere layer and the outer layer are independently selected from the group consisting of nonwoven layers, such as fine fiber spunbond layers (meltblown) or spunbonded, and / or tissue.
  • the inner and outer layers consist of non-woven fabric layers or melt-blown layers.
  • the inner and outer layers consist of non-woven fabric layers or melt-blown layers.
  • only one of the two layers is a nonwoven web, while the other is a melt-blown.
  • one of the two layers can be replaced by a tissue.
  • the face mask according to the invention comprises at least three layers, wherein in a three-layer structure, the intermediate layer is the middle layer.
  • the layers may, for example, be welded together at the edge of the filter material so that the at least three layers of the filter material are present unconnected to one another over the entire surface of the filter material.
  • the layers are connected by point calendering.
  • the at least three layers are connected to one another by welded joints, with the proviso that, based on the entire
  • Welding points are star-shaped, punctiform, bar-shaped and / or linear.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

L'invention concerne un masque facial comprenant un matériau filtrant qui présente au moins une couche intermédiaire entre la couche intérieure et la couche extérieure, la couche intermédiaire étant constituée de fibres discontinues chargées électrostatiquement, de filaments chargés électrostatiquement et/ou de réseaux de fibres chargés électrostatiquement. Selon l'invention, un matériau absorbant pulvérulent est déposé sur la surface des fibres de la couche intermédiaire.
PCT/EP2011/005694 2010-11-26 2011-11-11 Masque facial à matériau absorbant pulvérulent déposé sur des fibres discontinues chargées électrostatiquement Ceased WO2012069147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20100015037 EP2457618B1 (fr) 2010-11-26 2010-11-26 Masque de visage doté de matériaux d'absorption sous forme de poudre appliquée sur des fibres empilées chargées de manière électrostatique
EP10015037.4 2010-11-26

Publications (1)

Publication Number Publication Date
WO2012069147A1 true WO2012069147A1 (fr) 2012-05-31

Family

ID=43927837

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/005694 Ceased WO2012069147A1 (fr) 2010-11-26 2011-11-11 Masque facial à matériau absorbant pulvérulent déposé sur des fibres discontinues chargées électrostatiquement

Country Status (3)

Country Link
EP (1) EP2457618B1 (fr)
ES (1) ES2488124T3 (fr)
WO (1) WO2012069147A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160015098A1 (en) * 2013-03-15 2016-01-21 Matthew CONLON A facemask having one or more nanofiber layers
CN113073425B (zh) * 2021-04-02 2022-07-26 海南赛诺实业有限公司 一种用于kn95口罩的熔喷布及其制备方法

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115404A1 (de) * 1991-05-10 1992-11-12 Mgf Gutsche & Co Gmbh Betriebs Verfahren zum herstellen eines filtermediums und danach hergestelltes filtermedium
US5269294A (en) 1992-05-26 1993-12-14 Wallace J. Rogozinski Face mask impregnated with odor reducing molecular sieve material
GB2280620A (en) 1993-08-06 1995-02-08 Minnesota Mining & Mfg Face mask
US6070578A (en) 1998-02-23 2000-06-06 Baughman; David A. Breath odor eliminator mask
DE10152785A1 (de) 2001-04-24 2002-11-07 Ulrich Lersch Atemluftfilter
CN2635131Y (zh) 2003-04-23 2004-08-25 郑会武 新型强力吸附型口罩
CN2635130Y (zh) 2003-08-04 2004-08-25 李一鸣 高防护口罩
CN2635132Y (zh) 2003-04-23 2004-08-25 郑会武 吸附型纳米口罩
CN200995002Y (zh) 2007-02-04 2007-12-26 李桂峰 卫生防护口罩
CN201020171Y (zh) 2007-04-19 2008-02-13 北京京棉纺织集团有限责任公司 保健口罩
US20080110469A1 (en) 2006-11-13 2008-05-15 Stanley Weinberg Strapless flexible tribo-charged respiratory facial mask and method
CN101317703A (zh) 2008-07-08 2008-12-10 江南大学 空气滤清口罩
WO2010023370A1 (fr) 2008-08-26 2010-03-04 Deltalyo Valmy Composition multicouche pour masque respiratoire

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115404A1 (de) * 1991-05-10 1992-11-12 Mgf Gutsche & Co Gmbh Betriebs Verfahren zum herstellen eines filtermediums und danach hergestelltes filtermedium
US5269294A (en) 1992-05-26 1993-12-14 Wallace J. Rogozinski Face mask impregnated with odor reducing molecular sieve material
GB2280620A (en) 1993-08-06 1995-02-08 Minnesota Mining & Mfg Face mask
US6070578A (en) 1998-02-23 2000-06-06 Baughman; David A. Breath odor eliminator mask
DE10152785A1 (de) 2001-04-24 2002-11-07 Ulrich Lersch Atemluftfilter
CN2635132Y (zh) 2003-04-23 2004-08-25 郑会武 吸附型纳米口罩
CN2635131Y (zh) 2003-04-23 2004-08-25 郑会武 新型强力吸附型口罩
CN2635130Y (zh) 2003-08-04 2004-08-25 李一鸣 高防护口罩
US20080110469A1 (en) 2006-11-13 2008-05-15 Stanley Weinberg Strapless flexible tribo-charged respiratory facial mask and method
CN200995002Y (zh) 2007-02-04 2007-12-26 李桂峰 卫生防护口罩
CN201020171Y (zh) 2007-04-19 2008-02-13 北京京棉纺织集团有限责任公司 保健口罩
CN101317703A (zh) 2008-07-08 2008-12-10 江南大学 空气滤清口罩
WO2010023370A1 (fr) 2008-08-26 2010-03-04 Deltalyo Valmy Composition multicouche pour masque respiratoire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NATURE, vol. 427, February 2004 (2004-02-01), pages 253 - 527

Also Published As

Publication number Publication date
EP2457618A1 (fr) 2012-05-30
EP2457618B1 (fr) 2014-06-18
ES2488124T3 (es) 2014-08-26

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