EP3892339A1 - Masque de protection respiratoire - Google Patents

Masque de protection respiratoire Download PDF

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Publication number
EP3892339A1
EP3892339A1 EP21164622.9A EP21164622A EP3892339A1 EP 3892339 A1 EP3892339 A1 EP 3892339A1 EP 21164622 A EP21164622 A EP 21164622A EP 3892339 A1 EP3892339 A1 EP 3892339A1
Authority
EP
European Patent Office
Prior art keywords
loop
mask body
respiratory protection
mask according
protection mask
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
EP21164622.9A
Other languages
German (de)
English (en)
Inventor
Gerold SCHANDL
Wolfgang Czado
Michael Weber
Bernd Wehage
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.)
Melitta Europa GmbH and Co KG
Original Assignee
Melitta Europa GmbH and Co KG
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
Priority claimed from DE202020102009.9U external-priority patent/DE202020102009U1/de
Application filed by Melitta Europa GmbH and Co KG filed Critical Melitta Europa GmbH and Co KG
Publication of EP3892339A1 publication Critical patent/EP3892339A1/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
    • 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
    • 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
    • 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 respirator with at least one layer of a flexible, air-permeable filter material that forms a mask body that can be placed over the nose and mouth of a person, with holding means that can be placed on a head of the person can be fixed on the mask body.
  • the WO 2017/083289 A1 discloses a respiratory protection mask in which a mask body is formed by three sections of filter material which are connected to one another via a weld or adhesive seam.
  • Such flexible respiratory protection masks can adapt well to different face shapes and can therefore be used well in the medical field.
  • the production of such a multi-part respiratory protection mask is comparatively complex.
  • the respiratory protection masks can be produced inexpensively as disposable items.
  • At least one loop for fixing the mask body to a person is formed integrally with the at least one layer of filter material.
  • the loops usually consist of a different material than the mask body, in particular a rubber band that has to be cut and fixed during assembly. These steps can be omitted if the loop is formed integrally with the mask body.
  • the loop is preferably designed in such a way that it can be guided around one ear of the person.
  • the respirator can then be fixed to the mask body by means of two loops, one loop in each case encompassing a person's ear.
  • a first loop is connected to the mask body on a first side and a second loop is connected to the mask body on the side opposite the first side. This allows the user to intuitively grasp the loops and attach them to their ears.
  • Each loop is preferably formed by at least one strip-shaped section at an opening in the mask body.
  • the loop can be connected to one or both layers via one or more predetermined breaking points, so that the respirator can be transported in a flat, folded position.
  • the loop can then be removed from the layers of the mask body via the predetermined breaking point at the opening of the breathing mask in order to be used for fastening purposes.
  • the predetermined breaking points can also be used to change the length of the loop.
  • the loop can be separated using appropriate markings, with two or more different lengths being able to be provided, depending on which predetermined breaking point is cut by the user.
  • Each loop is preferably formed by two or four strip-shaped sections which are connected to one another.
  • Each section can be connected to an adjacent section in a U-shape, two strip-shaped sections preferably being connected to one another via a folded edge or a connecting seam.
  • two strip-shaped sections are cut out in one layer and arranged in a U-shape in plan view.
  • the width of the strip-shaped sections is preferably between 2 mm to 8 mm, in particular 3 mm to 6 mm or, for a high tear strength, 5 mm to 8 mm.
  • the mask body has a first layer and a second layer, and the two layers are used to produce the Respiratory protection mask preferably stamped or welded together. Embossing has the advantage that it can be done continuously in a continuous process at high speed.
  • the connecting seam is preferably designed as a stamped strip, in particular with two angularly arranged sections. So that the shape of the respiratory mask adapts well to the face shape, the respiratory mask is preferably designed as a half mask which has an opening on one side and is closed on the opposite side via a connecting seam and / or fold. The opening can be formed by an edge of the two layers, which is arcuately convex.
  • the mask body can taper in a wedge shape starting from the two ends of the edge, for example the edges extending from the end of the edge are arranged at an angle between 60 ° to 90 °.
  • the wedge-shaped edges at the end cannot be injection molded, since such a pointed end requires an unnecessarily large amount of material.
  • the two wedge-shaped edges can be connected to one another on the side opposite the opening via a connecting seam or fold which is arranged at an angle to a connecting seam on a wedge-shaped edge, for example at an angle between 100 ° to 140 °. Due to the angular design of the connecting seam, the use of material for the manufacture of the mask body can advantageously be reduced.
  • the mask body is preferably essentially conical in shape in the open position. This allows him to adapt to different face shapes particularly effectively.
  • the first and the second layer can optionally be connected to one another via a folded edge, that is to say formed integrally.
  • a connecting seam in the area of the folded edge is unnecessary, so that the filter material can be used optimally.
  • an angled connecting seam can then be provided which connects the two layers to one another.
  • the length of the at least one loop is preferably adjustable via predetermined breaking points.
  • the length can be varied by the user, depending on the predetermined breaking point up to which the loop is severed on the side of the mask body. Markings can optionally be provided on the mask body or the loops to indicate the length of the loop.
  • the mask body is formed from an essentially rectangular blank, on the opposite narrow sides of which a loop formed by at least one incision is provided.
  • the incision does not extend over the entire blank, but only over a central area, so that a connecting web remains at opposite ends of the incision for connecting the at least one loop to the mask body.
  • a plurality of incisions are preferably provided on each narrow side and, as a result, a plurality of loops of different lengths are formed integrally with the mask body.
  • At least one folding edge can run in the longitudinal direction of the blank, by means of which the flexible filter material can be unfolded in a central area and optionally also at the loops.
  • a seam that fixes the at least one folded edge is preferably arranged between the mask body and the at least one loop arranged on the narrow side.
  • Each loop is preferably connected to the mask body via only one connecting web.
  • the loop is formed by a circumferential section that is connected at one point to a single connecting web, so that the material consumption for producing the loop is reduced, since the loop-shaped circumferential section is formed from two contiguous strips for there and back while the connecting web is made from a single strip.
  • the connecting web has a length of more than 1 cm, in particular between 3 cm and 10 cm.
  • the length of the connecting web between the mask body and the loop can preferably be adjustable via at least one predetermined breaking point.
  • the respiratory protection mask can have a short connecting web in the starting position, and the wearer can then cut through one or more predetermined breaking points, depending on the head size, in order to increase the length of the connecting web.
  • the predetermined breaking points can be provided between the connecting web and the mask body and / or the connecting web and the loop.
  • the length of a circumferential section and thus the size of the loop can also be adjusted by means of at least one predetermined breaking point.
  • the loop is preferably placed around a person's ear and for people with large ears, the length of the loop can be lengthened by opening at least one predetermined breaking point on the loop.
  • the flexible filter material preferably comprises a nonwoven, in particular at least one layer of meltblown.
  • a meltblown can have a particularly high filter efficiency, in particular for fine particles.
  • the layer of meltblown in the filter material preferably has a weight per unit area between 15 to 50 g / m 2 , in particular between 20 to 40 g / m 2 .
  • the meltblown layer can be embedded between two carrier or support layers made of a different material, for example made of one or more layers of spunbond, preferably two layers of spunbond made of a polymer material. Each spunbond carrier layer can have a weight per unit area between 15 to 50 g / m 2 , in particular 20 to 40 g / m 2 .
  • This composite of several layers can be connected to one another to form a layer of filter material, for example by welding or gluing. If the individual layers are to be connected to one another by welding, spot welding with spot welds smaller than 1.5 mm is particularly suitable, the number of spot welds preferably being smaller than 3 per cm 2 , in particular smaller than 1 per cm 2 .
  • the shape of the weld spots can be round, rectangular, square or with a different geometry.
  • the area proportion of the spot welds is preferably less than 3%, in particular less than 2%.
  • a small amount of adhesive can be applied to the layers, for example by spraying or an application calender, so that they adhere to one another and can be processed as a layer composite.
  • the mutually facing layers of a multilayer composite are preferably made from a nonwoven fabric. It can be the support layers that are clawed into one another by the embossing in order to produce the connecting seam.
  • the filter material preferably has a bacterial filter performance according to DIN EN 14683: 2019-10 of more than 95%, in particular more than 98%.
  • the testing of the filter material or the respiratory mask is carried out in accordance with the standard and the parameters as specified in Table 5.2.7. For example, infectious germs, bacteria, viruses or fungi can be filtered through the filter material.
  • the respirator can also meet the DIN EN 149: 2001-10 standard for filtering half masks to protect against particles.
  • the air permeability of the filter material is preferably more than 200 l / (m 2 * s), in particular more than 300 l / (m 2 * s), particularly preferably more than 350 l / (m 2 * s) at a differential pressure of 2 mbar . This makes breathing only slightly more difficult when the respirator is on.
  • the individual layers of the composite layer accordingly have a significantly higher air permeability.
  • the respiratory protection mask is preferably arranged in such a way that the connecting seam is arranged essentially in a vertical plane.
  • the connecting seam has sufficient strength to withstand the tensile load, so that only two layers of filter material have to be used to produce the mask body.
  • the filter material comprises at least one layer made of a nonwoven fabric, in particular an extrusion nonwoven fabric as a fine filter.
  • a nonwoven fabric in particular an extrusion nonwoven fabric as a fine filter.
  • non-woven is used according to the definition according to ISO standard ISO 9092: 1988 or standard EN 29092. Fibers and / or filaments are used to produce a nonwoven fabric. A nonwoven fabric has sufficient strength to be wound into rolls.
  • a fine filter can be a meltblown nonwoven, preferably with a grammage of 5 to 100 g / m 2 , preferably 10 to 50 g / m 2 , in particular 10 to 30 g / m 2 .
  • the filter material used is preferably a multi-layer structure with one layer of meltblown as a fine filter, optionally also two or more layers of meltblown. Which are surrounded by a support layer on at least one side, preferably on both sides.
  • the fine filter layer serves to increase the filtration performance of the multi-layer filter material by trapping particles which, for example, pass through the support layer.
  • the fine filter layer can preferably be charged electrostatically, for example by corona discharge or hydrocharging, in order in particular to increase the separation of fine dust particles.
  • a support layer can be a spunbonded nonwoven or scrim, preferably with a grammage of 5 to 80 g / m 2 , more preferably 10 to 50 g / m 2 , more preferably 15 to 30 g / m 2 and / or preferably with a titer of the fibers forming the spunbonded nonwoven or the scrim in the range from 0.5 dtex to 15 dtex.
  • the support layer can also comprise a netting, knitted fabric, non-woven or woven fabric.
  • the filter material preferably comprises a layer with nanofibers.
  • nanofiber is used in accordance with the terminology of DIN SPEC 1121: 2010-02 (CEN ISO / TS 27687: 2009).
  • the connecting seam is preferably designed in the form of a strip with the same width, the width of the connecting seam being between 1 mm and 6 mm, preferably between 1.5 mm and 4 mm.
  • the embossing pressure can be between 1 bar and 50 bar, for example.
  • Ribs or knobs are preferably used as the embossing pattern.
  • the ribs preferably extend over the entire width of the connecting seam and can be oriented at an angle to the longitudinal direction of the connecting seam, in particular at an angle greater than 50 °.
  • the embossed seam can furthermore have two strip-shaped sections which together form a connecting seam, a gap or an unembossed section being arranged between the two sections, so that this connecting seam is a “double seam”.
  • Fragrances that release fragrance molecules can be applied to the filter material or to one of the layers of the filter material.
  • the fragrances can be applied in the form of essential oils.
  • an enzyme can be applied to a layer of the filter material in order to have an improved effect against toxins.
  • DFPase diisopropyl fluorophosphatase
  • the respirator can be used particularly effectively against poisons.
  • the filtration of environmental toxins such as insecticides and pesticides is also improved.
  • a respiratory protection mask 1 comprises a mask body 2 which can be placed on a person's face, at least over the nose and mouth.
  • the mask body 2 is formed from a first layer 3 made of a flexible filter material and a second layer made of flexible filter material, the two Layers can be made from the same filter material and have the same shape.
  • the respiratory mask 1 comprises an edge 4 on one side of the layer 3, at which the two layers are not connected and can thus form an opening when the two layers are moved apart from a flat starting position.
  • the mask body In the open position, the mask body has a substantially conical shape.
  • the edge 4 at the opening between the two layers is designed to be curved, in particular curved convexly over an angle of 60 ° to 90 °.
  • the mask body 2 comprises a connecting seam 5 which extends from the edge 4 at the opening up to a bend 8.
  • the connecting seam 5 is connected via the bend 8 to a connecting seam 7 which is angled at an angle between 90 ° to 170 °, in particular 120 ° to 150 °.
  • the connecting seam 7 is connected on the side opposite to the bend 8 with a folded edge 6 which connects the two layers lying on top of one another.
  • the first layer 3 and the second layer are formed integrally with one another.
  • a further connecting seam can optionally be provided in the region of the folded edge 6.
  • the folding edge 6 and the connecting seam 5 run towards one another in a wedge shape, for example at an angle between 60 ° and 90 °, in particular 65 ° to 85 °.
  • the mask body can be easily adapted to different face shapes.
  • the geometry of the connecting seams 5 and 7 can of course be designed differently. Instead of two straight connecting seams 5 and 7, which are connected to one another via a bend 8, a rounded connecting seam can also be provided.
  • two loops 9 and 11 formed integrally with the layer 3 are provided.
  • the loops 9 and 11 can largely be separated from the two layers 3 of the mask body 2 and a connecting web by means of cut edges 10, apart from optional predetermined breaking points.
  • the connecting web holds an end section of a loop 9 or 11 on the mask body 2.
  • the connecting web is arranged in the area of the connecting seam 5 and the folded edge 6, but can also be connected to the mask body 2 at a different position.
  • the loop 9 is formed from two strip-shaped sections 9a and 9b, which are connected to one another via a connecting section. In the superposed position, the strip-shaped sections 9a and 9b are arranged next to one another and can optionally be connected to one another via at least one predetermined breaking point. Another predetermined breaking point can be provided on the side of the mask body. The strip-shaped sections 9a and 9b can be separated from one another and from the mask body 2 to such an extent that the loop 9 formed in this way can be placed over an ear of a wearer of the respiratory protection mask 1.
  • a second loop 11 is formed from two strip-shaped sections 11a and 11b which are connected to one another via a connecting section. In the superposed position, the strip-shaped sections 11a and 11b are arranged next to one another. The strip-shaped sections 11a and 11b can be connected to one another and to the mask body 2 via predetermined breaking points.
  • the predetermined breaking points on the strip-shaped sections 9a, 9b, 11a and 11b can be used to specify the length of the loop 9 and 11.
  • markings can be provided on the first and / or second layer, for example with the note short, medium, long, so that the user can cut off the loops 9 and 11 in the appropriate length depending on his head shape.
  • FIG 3 A modified embodiment of a respiratory protection mask is shown in which two loops 9 ′ and 11 ′ are formed by only two strip-shaped sections instead of the four strip-shaped sections which extend essentially over the entire width of the layer 3.
  • the loops 9 'and 11' have a slightly different length, but can also be designed with the same length.
  • Figure 4 shows one opposite Figure 1 Modified respiratory protection mask, in which at the end of each loop 9 and 11 predetermined breaking points 12 are formed by spaced-apart incisions, so that the length of the loops 9 and 11 can be changed, depending on the predetermined breaking point 12 up to which the loop 9 or 11 on the side of the mask body 2 is separated.
  • markings are provided on the mask body 2 or optionally also on the loops 9 and 11, for example the letters S, M and L for small, medium and large.
  • a modified respiratory protection mask 1 ' is shown, which is produced from a substantially rectangular blank of a flexible filter material.
  • the respiratory protection mask 1 ' comprises a mask body 2' which can be placed over the nose and mouth of a person.
  • sections protruding from the longitudinal edge of the blank can optionally be formed in the nose area or on the neck, and such a geometric shape should also be viewed as an essentially rectangular blank.
  • a plurality of folded edges 13 are formed in the mask body 2 ', which extend parallel to the longitudinal edge of the mask body 2' and are oriented essentially horizontally in the worn state. Due to the folding edges 13, the flexible filter material can unfold in a central area of the mask body 2 'and adapt to the contour of the face.
  • the fold edges 13 are fixed on opposite sides by a seam 15, in particular by welding or gluing.
  • incisions 16 are made in the filter material on the opposite narrow sides of the respirator 1 ′ in order to produce individual loops 17 of different lengths. It is also possible to provide only a single loop 17 on each narrow side via a single incision 16. Each loop 17 is connected at opposite ends via a connecting web 18 to the mask body 2 'and is thus formed integrally therewith.
  • the filter material can also be unfolded in the area of the loops 17 by the folded edges 13, so that these are lengthened by the unfolding.
  • the egg cuts 16 extend through the fold edges 13 and are oriented essentially perpendicular to them.
  • a further optional seam 14 is provided on the respiratory protection mask 1 'by welding or gluing, which seam extends parallel to the longitudinal direction on the upper and lower edge of the mask body 2' and up to the narrow sides.
  • the filter material is stabilized by the seam 14.
  • Figure 6 shows a respirator similar to the Figures 1 to 3 opened with an essentially conical shape, but with a different pattern for making loops. The same reference symbols are therefore used for the mask body 2.
  • a cutting pattern with cutting edges 23 and a perforation with predetermined breaking points 25 and 26 is introduced adjacent to the edge 4.
  • the folding edge 6 is in the in Figure 6
  • the upper end area 22 is separated so that the layer 3 and the layer behind it are no longer connected via the folded edge 6 and each of the two layers forms its own loop 20 which can be fixed to a person's ear.
  • the loop 20 is formed by a circumferential section of interconnected strips which are connected to a connecting web 21.
  • the loop 20 is thus connected to the mask body 2 via the individual connecting web 21, so that less material is required to produce the loop 20 than in the exemplary embodiments of FIG Figures 1 to 3 , in which the loops are directly connected to the mask body 2 with a back and forth lead.
  • the connecting web 21 has a length between 2 cm and 10 cm, in particular 3 cm to 8 cm.
  • the connecting web 21 is formed widening on the side facing the mask body 2 by a rounding 24 on the cutting edge 23 in order to increase the strength at the transition.
  • the length of the connecting web 21 between the mask body 2 and the loop 20 can be adjusted via at least one predetermined breaking point 25.
  • the respiratory mask 1 can have a short connecting web 21 in the starting position, and the wearer can then cut through one or more predetermined breaking points, depending on the head size, in order to increase the length of the connecting web.
  • the loop 20 can be lengthened by severing at least one predetermined breaking point 26, so that an adjustment is made possible for people with large ears.
  • Markings can be provided at the predetermined breaking points 25 and 26 to facilitate handling and size adjustment.
  • Figure 7 shows the respirator of the Figure 6 in an attached position in which the nose and mouth of a person are covered by the mask body 2.
  • the mask body 2 is pretensioned towards the face by the loops 20, a loop 20 in each case being passed around the ear of the person and being connected to the mask body 2 via the connecting web 21. If the seat of the If the breathing mask is not comfortable, the length of the loop 20 via the predetermined breaking point 26 and the length of the connecting web 21 via the predetermined breaking point 25 can be increased.
  • the folded edge 6 shortened by severing the loop 20 is placed on the bridge of the nose and the somewhat longer connecting seam 5 engages under the person's chin in order to keep the leakage flows low.
EP21164622.9A 2020-04-09 2021-03-24 Masque de protection respiratoire Pending EP3892339A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202020102009.9U DE202020102009U1 (de) 2020-04-09 2020-04-09 Atemschutzmaske
DE102020114538.1A DE102020114538A1 (de) 2020-04-09 2020-05-29 Atemschutzmaske

Publications (1)

Publication Number Publication Date
EP3892339A1 true EP3892339A1 (fr) 2021-10-13

Family

ID=75203224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21164622.9A Pending EP3892339A1 (fr) 2020-04-09 2021-03-24 Masque de protection respiratoire

Country Status (1)

Country Link
EP (1) EP3892339A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886597A (en) * 1972-05-04 1975-06-03 Dupre Jacques Philippe Face mask and process for making face masks
EP1575388B1 (fr) * 2002-12-19 2009-02-11 Kimberly-Clark Worldwide, Inc. Ensemble distributeur et procede permettant de produire un masque facial individuel
CN1907516B (zh) * 2005-08-02 2011-08-31 尤妮佳股份有限公司 一次性使用口罩及其制造方法
WO2017083289A1 (fr) 2015-11-11 2017-05-18 3M Innovative Properties Company Respirateur à pli plat à maintien de forme

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886597A (en) * 1972-05-04 1975-06-03 Dupre Jacques Philippe Face mask and process for making face masks
EP1575388B1 (fr) * 2002-12-19 2009-02-11 Kimberly-Clark Worldwide, Inc. Ensemble distributeur et procede permettant de produire un masque facial individuel
CN1907516B (zh) * 2005-08-02 2011-08-31 尤妮佳股份有限公司 一次性使用口罩及其制造方法
WO2017083289A1 (fr) 2015-11-11 2017-05-18 3M Innovative Properties Company Respirateur à pli plat à maintien de forme

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