EP4066904A1 - Masque de protection et procédé d'obtention d'un masque de protection - Google Patents

Masque de protection et procédé d'obtention d'un masque de protection Download PDF

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Publication number
EP4066904A1
EP4066904A1 EP22164413.1A EP22164413A EP4066904A1 EP 4066904 A1 EP4066904 A1 EP 4066904A1 EP 22164413 A EP22164413 A EP 22164413A EP 4066904 A1 EP4066904 A1 EP 4066904A1
Authority
EP
European Patent Office
Prior art keywords
filter element
headbands
protective mask
longitudinal edges
head
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.)
Pending
Application number
EP22164413.1A
Other languages
German (de)
English (en)
Inventor
Kai Rinklake
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.)
Skylotec GmbH
Original Assignee
Skylotec GmbH
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 Skylotec GmbH filed Critical Skylotec GmbH
Publication of EP4066904A1 publication Critical patent/EP4066904A1/fr
Pending 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
    • 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
    • A41D13/1161—Means for fastening to the user's head
    • 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
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/084—Means for fastening gas-masks to heads or helmets

Definitions

  • the invention relates to a protective mask with a filter element for covering a mouth and/or nose area of a person, each with opposite transverse and longitudinal edges, and two head straps, each having opposite ends, for attaching the filter element to a head of the person, with one on each transverse edge one end is attached to the longitudinal edges, so that the respective headband extends along the longitudinal edge.
  • the invention also relates to a method for obtaining a protective mask, with the steps of producing a filter element for covering a mouth and/or nose part of a person, each having opposite transverse and longitudinal edges, and producing two headbands each having opposite ends for fastening the filter element to one head of the person.
  • Protective masks are used to protect the face, parts of it and the respiratory organs.
  • protective masks protect against gases, vapours, liquid mist, coarse and respirable fine dust, pathogens, viruses and/or annoying odours.
  • Masks are differentiated, for example, in everyday masks, so-called makeshift masks made of fabric or community masks, as medical mouth and nose protection, MNS, for example according to EN 14683, filtering masks, for example according to EN 149, FFP1 mask, FFP2 mask, N95 mask , or FFP3 mask.
  • the aforementioned FFP masks are usually used as part of personal protective equipment as part of occupational safety in areas where there are harmful substances in the air.
  • Such protective masks are usually attached to the head with a strap, which is guided either behind the ears or behind the head to a filter element of the Fixing the mask to a person's mouth and/or nose.
  • Higher quality masks have two flexible head attachment straps, also called head straps, that are pulled over the head to secure the mask. Basically, in order to achieve a sufficient filtering effect, it is important that the protective mask can be attached to the head easily and in a defined and sealing manner.
  • a disadvantage of the aforementioned headbands is that the rubber bands used have a technical limit, ie they can only be stretched by a certain factor compared to their non-stretched state. As a consequence, one of the headbands is often too tight and the other headband is too loose, so that the mask does not lie tightly on the head and does not achieve the desired filter effect.
  • the headbands are of different lengths and/or can be stretched with different stretching forces. In the latter case, this means, for example, that with the same length in the unstretched state, the headbands can have different lengths, in particular in the maximum stretched state. Since the neck has a smaller diameter than the head of the person wearing the protective mask, and insofar as the circumference of the head around the top of the head is larger than that on the bottom of the head, the longer headband or the headband with greater elasticity is expediently guided around the top of the head, while the shorter headband or the headband with the lower elasticity is guided around the lower head.
  • the proposed protective mask is characterized by an improved fit, in particular on the transverse and/or longitudinal edges of the person's mouth and/or nose area, and thus by an increased filtering effect.
  • the protective mask can also have a plurality of head straps with different lengths and/or different extensibility.
  • Different lengths means in particular that the headbands are of different lengths in relation to their longitudinal extension in an unstretched and/or stretched state.
  • Different extensibility means in particular that the headbands have different lengths in the stretched state, that is to say are of different lengths in particular due to complete stretching, while the headbands can be of the same length in the non-stretched state.
  • stretchability means the property of the headbands, how far the headbands can be lengthened without the headbands tearing or suffering irreversible damage/or and then retracting from the stretched state back to the unstretched state.
  • the term different can mean a difference of 1%, 2%, 5%, 10%, 20% or 50% or some other value of the lengths.
  • the first head strap may extend 175 mm between its opposite ends when unstretched, while the second head strap may extend 170 mm between its opposite ends when unstretched.
  • the headbands preferably run parallel and/or at a distance from one another.
  • the protective mask also referred to below as a mask, is preferably designed as a respirator, in particular designed as a half mask, preferably for use as a filtering mask (FFP), in particular to prevent inhalation of harmful particles and to reduce infection with pathogens through the mouth and/or nose , and/or for use as an aerosol-filtering respiratory mask and/or filter particle mask in particular, more particularly to prevent transmission of pathogens by droplet infection and/or in particular to reduce a germ load, in particular a viral load, for example in the event of an epidemic or pandemic spread of infectious diseases such as COVID -19
  • the protective mask is preferably designed as a particle-filtering half mask in accordance with EN 149:2001 or EN 149:2001+A1:2009, in particular an FFP-1, FFP-2 or FFP-3 mask.
  • the mask can be designed according to EN standards 136, 140, 143, 149, 1827, 12941 and/or 12942.
  • the filter element is preferably designed in the shape of a rectangle.
  • the filter element has several layers of non-woven material, which layers are connected to one another along the transverse and longitudinal edges, with the connection of the transverse edges being able to spring back next to the fastened ends of the headband.
  • the layers are in particular provided on top of one another and are preferably glued, connected and/or sewn to one another.
  • the layers can comprise a woven fabric, knitted fabric, knitted fabric, embroidered fabric, scrim and/or a textile composite, in particular a fleece or woven fabric.
  • the filter element can consist of textile fibers and/or have textile fibers, with natural fibers, preferably wool or cotton, and/or synthetic fibers, preferably synthetic fibers (man-made fibers) such as cellulosic fibers, for example viscose fibers, being used as textile fibers, in particular made of the group of polyesters (PES), polyolefins such as polyethylene (PE) and polypropylene (PP), polyvinyl chloride (CLF), polyvinylidene chloride (CLF), acetate (CA), triacetate (CTA), polyacrylic (PAN), polyamide (PA) , polyvinyl alcohol (PVAL), polyurethanes, polyvinyl esters, (meth)acrylates and mixtures thereof.
  • the aforementioned abbreviations for the textile fibers come from DIN 60001-4 (August 1991).
  • the mask can, for example, as additional layers of fabric Intermediate layers included with different functions, such as additional filtering, sealing, moisture absorption, etc.
  • the filter element can have a flexible, porous fabric that belongs to the textile composites and is not produced by classic methods of fabric binding of warp and weft or by stitch formation, but by intertwining and/or cohesive and/or adhesive connections of textile fibers .
  • Nonwovens are generally loose materials made from staple fibers or filaments, in particular from synthetic fibers or man-made fibers, for example polypropylene, polyester, viscose, etc., which are held together by the adhesion inherent in the fibers.
  • Individual fibers can have a preferred direction, so-called oriented or cross-ply non-wovens, or they can also be non-directional, so-called random non-wovens.
  • the average diameter of the textile fibers of the filter element is preferably at most 100 ⁇ m, in particular at most 30 ⁇ m, preferably at most 20 ⁇ m, preferably at most 10 ⁇ m, particularly preferably at most 5 ⁇ m, very particularly preferably at most 2 ⁇ m.
  • the diameter of the textile fibers of the filter element should be in the range from 0.05 to 50 ⁇ m, in particular 0.1 to 50 ⁇ m, preferably 0.2 to 30 ⁇ m, particularly preferably 0.2 to 20 ⁇ m, very particularly preferably 0. 5 to 10 ⁇ m.
  • the nonwovens can be mechanically strengthened by needling, meshing or by swirling using sharp water jets, so-called spunlaced nonwovens.
  • Nonwovens can also be produced, for example, by spunbonding, meltblow processes and preferably by electrospinning.
  • Adhesively bonded nonwovens can be created by bonding the fibers with liquid binders, for example acrylate polymers, SBR/NBA, polyvinyl ester or polyurethane dispersions, or by melting or dissolving so-called binding fibers that are mixed into the nonwoven during manufacture.
  • liquid binders for example acrylate polymers, SBR/NBA, polyvinyl ester or polyurethane dispersions, or by melting or dissolving so-called binding fibers that are mixed into the nonwoven during manufacture.
  • the fiber surfaces are dissolved using suitable chemicals and connected by pressure or welded at elevated temperatures.
  • the shape of the filter element can be adapted to the Be adapted to the person's face to form a so-called CUP mask or be designed to be foldable to form a so-called folding mask.
  • the filter element can have an average pore size or average mesh size—depending on the type of fabric layer—of greater than 1 ⁇ m, in particular greater than 10 ⁇ m, preferably greater than 50 ⁇ m, particularly preferably greater than 100 ⁇ m, or more than 200 ⁇ m. In this way, a good separation rate with regard to particles and aerosols and/or a low breathing resistance can be achieved.
  • the filter element can comprise an electrostatic material, in particular an electret, through which small dust particles and liquid droplets can be bound by electrostatic forces.
  • the ratio or quotient of the average pore size or mesh size to the average diameter of the textile fibers of the filter element is particularly preferably in the range from 0.1 to 2000, in particular 1 to 500, preferably 5 to 350, particularly preferably 10 to 300, very particularly preferably 25 to 250, vary.
  • the ratio or the quotient of the average pore size or mesh size to the average diameter of the textile fibers of the filter element should be no more than 2,000, in particular no more than 500, preferably no more than 350, particularly preferably no more than 300, very particularly preferably no more than 250.
  • the ratio or the quotient of the average pore size or mesh size to the average diameter of the textile fibers of the filter element should be at least 0.1, in particular at least 1, preferably at least 5, particularly preferably at least 10, very particularly preferably at least 25, even more preferably at least 40 , amount. In this way, particularly efficient separation rates with regard to pathogens and aerosols are achieved.
  • the filter element can have an average efficiency Em according to DIN EN 779 (July 1993) of at least 40%, in particular at least 50%, preferably at least 70%, particularly preferably at least 90%, very particularly preferably at least 95%.
  • the filter element can also have an average degree of separation Am according to DIN EN 779 (July 1993) of at least 50%, in particular at least 70%, preferably at least 90%, particularly preferably at least 95%, very particularly preferably at least 99%.
  • the filter element is designed such that at an inflow velocity of 0.1 m/s, it has an average separation rate for particles and/or aerosols with diameters in the range from 1 to 100 ⁇ m of at least 80%, in particular at least 90%, preferably at least 95%.
  • the headbands each have at least one or more elastic threads that extend between the ends and are surrounded on the other side by a fleece.
  • An upper layer and a lower layer of non-woven fabric are preferably provided, between which the elastic thread is provided.
  • the elastic thread is preferably designed as Lyca thread or on a comparable stretchable material.
  • the headbands can preferably be designed as rubber bands, which are surrounded by a fabric, in particular a non-woven fabric, for increased wearing comfort.
  • the head dispensers preferably each have two elastic threads which are arranged at a distance from one another and which are held stationary between two layers of non-woven fabric or are woven into the layers of non-woven fabric.
  • one headband has three elastic threads, while the other headband has four elastic threads.
  • the materials of the headbands can also vary in such a way that the extensibility of the headbands is different, and as a result different tensile forces are required when putting on the protective mask.
  • the headbands have different thicknesses and/or different diameters and/or are designed to be elastically stretchable. It is also conceivable that one headband has a larger number of elastic threads and/or stronger elastic threads than the other headband in order to obtain the different length and/or extensibility.
  • the headbands are glued, connected and/or sewn to the filter element at their ends and/or are designed in one piece with the filter element.
  • the opposite ends of the headband can be attached to the opposite transverse edges by welding, in particular ultrasonic welding or embossing.
  • the headband preferably reaches up to the transverse edge and/or has a width of 5 mm, 10 mm or 15 mm.
  • the filter element comprises a large number of particularly plate-like layers, in particular made of non-woven fabric, which can be folded in on one another and, by pulling on one of the longitudinal edges, can be unfolded into a ready-to-use configuration, and/or the filter element has several layers of non-woven fabric, which layers are bonded together along the transverse and longitudinal edges.
  • the plate-like layers are preferably touching one another in order to be able to store the protective mask in a space-saving manner.
  • Three plate-like layers are preferably provided, with the two longitudinal edges of the middle layer each being connected to a longitudinal edge of one of the two outer layers, for example sewn, glued and/or welded.
  • the two outer plies may be folded onto the middle ply via the longitudinal edge joints thus formed to obtain the folded configuration.
  • the protective mask preferably has a shape corresponding to the mouth and/or nose area.
  • the protective mask has a foam bracket which is arranged centrally on one of the longitudinal edges.
  • the foam bracket can have an integrated flexible metal bracket which is integrated into the longitudinal edge.
  • the protective mask can be adapted to the bridge of the nose with the foam bracket in order to keep a field of vision free and to minimize the entry and exit of breathing air upwards, so that the filter element rests in particular around the mouth and/or nose area.
  • the proposed method allows both the filter element and the headbands to be manufactured in the same manufacturing machine and not separately. Accordingly, the filter element, the headbands and/or the attachment of the headbands are preferably manufactured in the same manufacturing machine. By manufacturing the headbands and attaching them in the same manufacturing machine, the protective mask can be manufactured much more cheaply and quickly.
  • the method includes the step: Fasten at least one elastic thread extending between the ends between two layers of fleece provided on the other side to obtain each headband.
  • the elastic thread is preferably attached circumferentially along its entire extent, so that the elastic thread is provided within the fleece.
  • the elastic thread is preferably covered on both sides, in particular from above and below, by fleece, in particular by a respective layer of fleece, which layers are then connected to one another, in particular glued, sewn and/or woven.
  • the fastening includes gluing, connecting and/or sewing and/or forming one part with the filter element.
  • the headbands have different thicknesses and/or different diameters, and/or the headbands are designed to be elastically stretchable.
  • the protective mask is designed in accordance with the FFP2 standard and has a filter element 1 for covering a part of a person's mouth and/or nose.
  • the filter element 1 has a rectangular plate-like shape with opposite transverse and longitudinal edges 2, 3 and is made of a non-woven fabric.
  • the filter element 1 has three plate-like layers 4 each consisting of several layers of nonwoven fabric, the individual layers of nonwoven fabric of each layer 4 being connected to one another in a stationary manner along the transverse and longitudinal edges 2 , 3 by means of an embossing 5 .
  • the middle layer 4 is shown.
  • the two outer layers 4 (not shown) are each connected at a longitudinal edge 3 to one of the two longitudinal edges 3 of the middle layer 4 and folded over one another, and in such a way in 1 not visible. By pulling on one of the longitudinal edges 3, the protective mask can be unfolded into a configuration ready for use.
  • the protective mask also has two elastic head straps 6, which at their opposite ends 7 are each attached to one of the transverse edges 2 and one of the longitudinal edges 3 assigned are attached.
  • the attachment is achieved by gluing, sewing, welding and/or forming one piece with the filter element 1 . Accordingly, the two head straps 6 spaced apart from each other extend flush along one of the two longitudinal edges 3.
  • the filter element 1 is placed on the person's mouth and/or nose and the stretched head straps 6 are wrapped around the Guided the person's head around, so that the first upper headband 6 comes to rest on the upper head and the second lower headband 6 on the lower head, and in this way the protective mask is clamped to the head.
  • the headband 6 has two elastic threads 8 which extend between the ends 7 and are made of Lyca.
  • the elastic threads 8 are spaced parallel to one another and surrounded on the other side by a fleece 9 , namely bordered on both sides along their entire extent by two rectangular layers of fleece 9 and thus held stationary between the layers of fleece 9 .
  • the protective mask also has a foam bracket 10 which is arranged centrally on one of the longitudinal edges 3 .
  • the foam bracket 8 has an integrated, flexible metal bracket, by means of which the filter element 1 can be adapted to the bridge of the person's nose in order to keep the person's field of vision free and to minimize breathing air entering and exiting upwards.
  • the headbands 6 have different lengths or extensibility between their opposite ends 7 .
  • the headband 6 shown at the front in the figure is designed with a shorter length or extent than the headband 6 shown at the back in the figure and therefore tensions more than the rear headband 6.
  • the rear headband has a length between the opposite ends 7 of 175 mm, while the front headband has a length of 170 mm.
  • the difference can also be larger, for example 10 mm, 15 mm, 20 mm or more.
  • the lengths can also have other values, but differ between the two headbands 6.
  • one headband 6 is longer than the other headband 6, the protective mask sits better on the person's head, namely the transverse and longitudinal edges 2, 3 fit better and thus seal the protective mask against the head better. Because usually the head has a larger circumference on the top of the head than on the lower head facing the neck. Correspondingly, the headband 6 with the shorter length is guided around the lower head and the headband 6 with the comparatively longer length is guided around the upper head.
  • the headbands 6 can likewise or additionally have different extensibility. Accordingly, it is expedient to design the headband 6 assigned to the top of the head with greater flexibility than the headband 6 assigned to the bottom of the head. Different degrees of extensibility can be obtained by headbands 6 of different strengths, different diameters and/or different materials. Likewise, elastic threads 8 of different strengths or different numbers of elastic threads 8 can be used in the headbands 6 . Above all, different lengths and/or extensibility allow the protective mask or the filter element 1 to fit better on the person's chin.
  • both the filter element 1 and the head straps 6 are expediently produced in a common production machine on the one hand and the head straps 6 are fastened to the filter element 1 as described above on the other hand.
  • the protective mask can be manufactured much more cheaply and quickly.

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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)
  • Pulmonology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP22164413.1A 2021-03-29 2022-03-25 Masque de protection et procédé d'obtention d'un masque de protection Pending EP4066904A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021107927.6A DE102021107927A1 (de) 2021-03-29 2021-03-29 Schutzmaske und Verfahren zum Erhalten einer Schutzmaske

Publications (1)

Publication Number Publication Date
EP4066904A1 true EP4066904A1 (fr) 2022-10-05

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ID=80933720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22164413.1A Pending EP4066904A1 (fr) 2021-03-29 2022-03-25 Masque de protection et procédé d'obtention d'un masque de protection

Country Status (2)

Country Link
EP (1) EP4066904A1 (fr)
DE (1) DE102021107927A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090211582A1 (en) * 2008-02-25 2009-08-27 Reese George D Universal fit face mask
US20110180078A1 (en) * 2010-01-26 2011-07-28 Mckinley Jared Face Mask With Adjustable And Detachable Straps
DE202014103096U1 (de) * 2014-07-04 2015-10-06 Robin Reusch Atemschutzmaske und Atemschutzkit
US20180326232A1 (en) * 2017-05-11 2018-11-15 Medline Industries, Inc Mask with Self-Adherent Securement Strap and Methods Therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090211582A1 (en) * 2008-02-25 2009-08-27 Reese George D Universal fit face mask
US20110180078A1 (en) * 2010-01-26 2011-07-28 Mckinley Jared Face Mask With Adjustable And Detachable Straps
DE202014103096U1 (de) * 2014-07-04 2015-10-06 Robin Reusch Atemschutzmaske und Atemschutzkit
US20180326232A1 (en) * 2017-05-11 2018-11-15 Medline Industries, Inc Mask with Self-Adherent Securement Strap and Methods Therefor

Also Published As

Publication number Publication date
DE102021107927A1 (de) 2022-09-29

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