EP3903612B1 - Protective mask for mouth and nose - Google Patents
Protective mask for mouth and nose Download PDFInfo
- Publication number
- EP3903612B1 EP3903612B1 EP20195347.8A EP20195347A EP3903612B1 EP 3903612 B1 EP3903612 B1 EP 3903612B1 EP 20195347 A EP20195347 A EP 20195347A EP 3903612 B1 EP3903612 B1 EP 3903612B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mask
- pleat
- mouth
- height
- edge
- 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.)
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Links
- 230000001681 protective effect Effects 0.000 title 1
- 230000007423 decrease Effects 0.000 claims description 25
- -1 polypropylene Polymers 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 239000004033 plastic Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000001012 protector Effects 0.000 description 22
- 239000002184 metal Substances 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 210000003484 anatomy Anatomy 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000001815 facial effect Effects 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000000474 nursing effect Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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Images
Classifications
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- 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
- A41D13/1115—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a horizontal pleated pocket
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D27/00—Details of garments or of their making
- A41D27/20—Pockets; Making or setting-in pockets
-
- 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
- A41D13/1123—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a duckbill configuration
Definitions
- the present invention relates to a mouth and nose protector with a mask for covering a person's mouth and nose at the same time, the mask consisting of a blank of a flat filter medium.
- a mask is a face covering that covers part or all of a person's face.
- face half masks are used, particularly in the medical and nursing sector, which consist of one or more paper or fleece layers that can be attached to the back of the head or behind the ears with ribbons or rubber bands. Since the mask covers the mouth and nose at the same time, these half masks are also referred to as mouth-nose protection.
- the mask of a typical mouth and nose protection consists of a cut of a flat filter medium, whereby the filter medium can consist of one or more layers of paper or plastic fleece.
- Additional devices are usually provided on the mask of a mouth and nose protector, which are intended in particular for holding and positioning the mask on the head.
- a flexible metal bracket is often provided in the middle at the upper edge of the filter material blank of the mask. With this, the mouth and nose protection can be pressed against the bridge of the nose and shaped so that the mouth and nose protection is flush with the face.
- On the side edges of the mouth and nose protection mask there are typically straps or elastics with which the mouth and nose protection is attached to the back of the head or behind the ears when worn.
- Mouth and nose protectors are divided into different type classes depending on the filter performance, and the higher the filter performance, the greater the breathing resistance typically becomes. Particularly high demands are placed on those embodiments that are intended to meet the standards for respiratory protection masks (FFP-1, FFP-2, FFP-3 or BFE 98).
- FFP-1, FFP-2, FFP-3 or BFE 98 the standards for respiratory protection masks
- a mouth and nose protector with a mask for covering the mouth and nose of a person at the same time consisting of a blank of a flat filter medium, which is characterized in that the blank between the upper edge of the mask and the bottom edge of the mask is horizontally zig-zag folded and forms at least 5 folds, each of which has a fold back lying on the outside of the mask and two fold flanks extending from the fold back, with the height of the fold flanks rising both from the upper edge of the mask and decreases from the bottom edge of the mask towards the center of the mask.
- the mask has at least five folds with a fold back lying on the outside of the mask, there are at least four fold backs on the inner side of the mask, which results in a total of at least nine fold backs, between which the filter material extends over the fold flanks .
- the mouth and nose protector according to the invention adapts optimally to the respective anatomy of the face when worn and ensures that the mouth and nose protector can fit flush on all sides.
- a fold in the sense of the present invention consists of a fold back and two fold flanks starting from the fold back.
- the back of the fold runs on each horizontal bend in the zigzag-folded filter medium, and the respective fold flanks extend between a fold back on the outside and the two next next fold backs on the inside.
- the height of these fold flanks is the distance between the two fold backs between which the respective fold flank extends. Because the pleated back over parallel to the cut of the filter medium, the height of a fold flank is constant throughout
- the zigzag fold of the mask is aligned horizontally. This means that the ridges of the folds extend horizontally between the upper edge and the lower edge of the mouth and nose protector.
- the terms top and bottom here refer to the situation when wearing the mouth and nose protector, with the top edge running over the nose and the bottom edge running over the chin or under the chin.
- the mask has an inside and an outside.
- the inside of the mask is the side that faces the face when wearing the mouth and nose protector.
- the outside of the mask is the side that faces outwards when wearing the mouth and nose protector. If you count the ridges from the top and bottom edge of the mask to the middle, then - depending on how the zigzag fold is aligned - the odd-numbered ridges point inwards, i.e. towards the face, and all the even-numbered ridges point outwards , or the other way around.
- the mask is formed from a substantially rectangular blank of filter media.
- other cut geometries can also be considered, such as a hexagonal or even octagonal cut, as long as it is ensured that the mask provided is large enough to cover the mouth and nose at the same time.
- the mask has at least 5 folds, each of which has a fold back lying on the outside of the mask. If the number of ridges on the inner mask and the number of ridges on the outer side of the mask are taken together, the sum total is at least 9 ridges per mouth and nose protector according to the invention.
- the folded blank forms 6 to 12 folds, each of which has a fold back lying on the outside of the mask and two fold flanks emanating from the fold back, with the height of the fold flanks varying both from the upper edge of the mask and from the lower edge of the mask Mask decreases towards the center of the mask.
- the folded blank forms 6 to 10 such folds.
- the folded blank forms 7 to 9 such folds.
- 9 folds are provided with the back of the folds lying on the outside of the mask.
- 7 folds are provided with the back of the folds lying on the outside of the mask.
- 5 or 6 folds are provided with the back of the folds lying on the outside of the mask.
- the number of ridges on the outer side of the mask is 1 greater than the number of ridges on the inner side of the mask.
- the number of folds counted from the lower edge of the mask to the middle is 1 greater than the number of folds counted from the upper edge of the mask to the middle.
- the number of folds with the back of the folds facing out counted from the top edge of the mask to the center is 4 and the number of folds counted from the bottom edge of the mask to the center is 5.
- the number of folds is with the back of the pleats facing outward counted from the top edge of the mask to the middle 3 and the number of pleats counted from the bottom edge of the mask to the middle 4.
- the height of the fold flanks decreases both from the upper edge of the mask and from the lower edge of the mask towards the center. In certain embodiments, the height of each fold flank decreases compared to the previous fold flank.
- the two fold flanks of a first fold have the same height, and the two fold flanks of the following fold have a lower height than the fold flanks of the fold, as a result of which the folds form several consecutive isosceles triangles in which the height of the limbs of equal length decreases inward from both the top and bottom edges.
- the height of each pleat decreases from the top and/or bottom edge toward the center.
- the first two folds at the top and/or bottom edge are of the same size and only the height of all the folds that follow in the direction of the center of the mask gradually decreases.
- the filter medium from which the blank of the mask is made is preferably a plastic fleece made of a synthetic polymer or a glass fiber fleece.
- a plastic fleece made of polypropylene, polyethylene or polytetrafluoroethylene is particularly preferred.
- fleece is to be understood here in such a way that it is a structure made of fibers that are not systematically crossed or intertwined, as is the case with weaving, warp-knitting, knitting or braiding.
- the webs used according to the invention are flexible and foldable, foldable in this context meaning that stable fold backs are formed during folding, which do not spontaneously unfold again without mechanical action.
- the mask consists of a layer of filter medium.
- the filter medium consists of two, three, four, five or more layers. In some multi-layer embodiments, all layers consist of the same fleece material.
- the layer on the outside of the mask and/or the layer on the inside of the mask are made of a material that differs from the material of the other layer(s).
- the thickness of the fleece layer(s) is preferably chosen to be as small as possible in order to save material, to keep the breathing resistance low and to enable a multi-layer structure.
- the thickness of the fleece material is preferably in the range from 0.1 to 1.0 mm, particularly preferably in the range from 0.1 to 0.8 mm.
- the decrease in the height of the fold flanks is defined such that the height of a fold flank from the upper or lower edge towards the center is 8 to 32% less than the height of the preceding fold flank. In certain embodiments, the percent decrease value increases from both the top and bottom edges toward the center.
- the decrease in height from the first fold flank to the second fold flank can be in the range of 8 to 10%
- the decrease from the second fold flank to the third fold flank in the range of 18 to 24%
- the decrease from the third fold flank to the fourth fold flank in the range from 25 to 32%.
- the height of the first fold flank is in the range from 19 to 21 mm
- the height of the second fold flank is in the range from 17 to 19 mm
- the height of the third fold edge in the range of 13 to 15 mm and the height of the fourth fold edge in the range of 9 to 11 mm.
- the percentage values given above refer to the decrease in the height of the leg of the same length in a fold in relation to the height of the leg of the same length in the preceding fold.
- the decrease in the height of the legs of the same length of one of the folds is reduced by 8 to 32% relative to the height of the legs of the same length of the preceding fold.
- the percent decrease value may increase from the edges toward the center.
- the decrease in the height of the legs of the same length of a second fold in relation to the height of the legs of the same length in a first fold is in the range of 8 to 10%
- the two pleats that meet in the middle of the mask are the same size, and the two major pleats that follow up and down are also the same size, and the two major pleats that follow that, up and down, are also the same size.
- an adhesive bond, seam or ultrasonic welding is provided on the vertically running lateral edges of the mask.
- the folded filter medium of the mask remains on the side edges gathered, while the fold can be spread open in the area between the lateral edges in order to adapt the mask to the physiognomy of the user's face.
- a flexible nose piece is arranged on the upper horizontal edge of the mask, which can consist, for example, of a dimensionally stable, flexible plastic or metal.
- the nose clip is preferably guided at the upper edge of the mask in a horizontally running tunnel which is formed by the outer edge of the uppermost fold flank being sewn, glued or welded to the fold flank following towards the center of the mask.
- a nose pad is arranged on the upper horizontal edge of the mask, which can consist of a foam, for example.
- the nose pad is preferably sewn, glued or welded to the mask at the outermost fold flank.
- a rubber band or a strap for fastening the mouth and nose protector to the head is preferably arranged on the vertically running lateral edges of the mask. The height of this attachment is such that it can be attached either to the back of the head or to the ears.
- the band or rubber at the top edge of the mask is preferably sewn, glued or welded to the side edges of the mask.
- the band or elastic at the lower edge of the mask is guided through a horizontally running tunnel, which is formed by the outer edge of the lowermost fold flank being sewn, glued or welded to the fold flank following towards the center of the mask.
- a stiffening strip is provided in the center of the mask.
- the stiffening strip can be sewn, glued, sprayed, welded to the filter media of the mask, or inserted into a pocket or tunnel formed by the fold.
- the stiffening strip is used to reinforce the central area of the mask so that it does not come too close to the face surface, especially when inhaling.
- the stiffening strip extends from the center of the mask horizontally in both directions to the lateral edges at least over 70%, at least over 80%, at least over 90% of the mask width or even over the entire mask width.
- the stiffening strip can be provided on the outside of the mask or on the inside of the mask.
- a stiffening strip is applied to both the inside and the outside of the mask, and the way the stiffening strip is attached to the inside can differ from the way the stiffening strip is attached to the outside.
- stiffening material preferably a plastics material
- stiffening material is applied by spraying in a layer thickness in the range 0.1 to 1.0 mm onto the area of the mask to be stiffened.
- plastic materials are polypropylene, polyethylene and polytetrafluoroethylene.
- the stiffening strip consists of a separate plastic strip that is sewn, welded or glued on. Strips made of polypropylene, polyethylene and polytetrafluoroethylene are particularly preferred here.
- the material used here is preferably more rigid than the material of the filter medium of the mask due to its material composition or due to its greater material thickness.
- the fold flanks of a fold lying in the middle of the mask or the two adjoining fold flanks of two adjacent folds in the middle of the mask are sewn, glued or welded together, whereby greater rigidity is achieved in this area.
- the fold flanks of a fold in the middle of the mask or the two adjoining fold flanks of two adjacent folds in the middle of the mask are sewn, glued or welded to form a tunnel into which a stiffening strip is inserted.
- the stiffening strip is preferably made of plastic, such as polypropylene, polyethylene and polytetrafluoroethylene, or metal.
- the two middle folds are of the same size and their fold backs are sewn, glued or welded to the fold flanks of the folds following in each case to the outside. If the two innermost folds are then folded outwards, a pocket forms into which a stiffening strip can be inserted. This pocket can then be closed by sewing, welding or gluing so that the stiffening strip is permanently held therein.
- the stiffening strip is preferably made of plastic, such as polypropylene, polyethylene and polytetrafluoroethylene, or metal. Different filter performances can be achieved in particular through the selection of the filter material used and/or through the selection of the number of filter material layers used.
- the mouth and nose protector according to the invention meets the standards according to FFP-1, FFP-2, FFP-3 or BFE 98.
- the present invention also includes a method for producing a mouth and nose protector of the type described above, in which method a blank of a flat filter medium is folded horizontally in a zigzag between the upper edge of the later mask and its lower edge, so that at least five folds are formed, each of which has a fold back lying on the outside of the mask and two fold flanks emanating from the fold back, the height of the fold flanks extending both from the upper edge of the later mask and from its lower edge to the center of the mask decreases towards
- FIG 1 a specific embodiment of a mouth and nose protector 1 according to the invention is shown highly schematically, which has a mask made of a filter medium that is folded horizontally several times. Between two fold backs 3, 3 'a fold flank 4 extends whose Height is defined by the distance between the fold back 3 on one side and the fold back 3' on the other side. The height of the fold flanks decreases both from the top edge 6 of the mask and from the bottom edge 10 of the mask towards the center 5 of the mask.
- a nose clip 7 is arranged at the upper edge 6 of the mask, and rubber bands 8, 9 are provided both at the upper edge 6 and at the lower edge 10 of the mask for fastening the mouth and nose protector 1 to the head.
- the stiffening strip 14 in the middle 5 of the mask. This is used to reinforce the middle area of the mask so that it does not come too close to the face surface, especially when inhaling.
- the stiffening strip 14 extends along the back of the fold in the center 5 of the mask in both directions to the lateral edges over almost the entire width of the mask in the horizontal direction.
- FIG. 12 is a schematic representation of a plan view of the mask 2 of the embodiment of the mouth and nose protector 1 from FIG figure 1 without nose clip and rubber bands.
- FIG 3 a cross section through a further embodiment of a mask 2 is shown schematically.
- the multiply folded blank of the filter medium extends between the upper edge 6 and the lower edge 10 of the mask 2 and in the process forms fold backs 3 on the outside of the mask 2 .
- Fold backs 3 ⁇ are also formed on the inside of the mask 2.
- the fold flanks 4 extend between two consecutive fold backs 3, 3 ⁇ on the outside and inside.
- a stiffening strip 14 is welded on the outside of the mask onto the fold flanks meeting in the center 5 of the mask 2 . This serves to reinforce the central area of the mask 2 in such a way that it does not come into too close contact with the face surface, particularly when inhaling.
- the stiffening strip 14 extends from the center 5 of the mask in both directions to the lateral edges over almost the entire width of the mask in the horizontal direction.
- figure 4 12 is a schematic representation of a cross-section through the mask of the embodiment of FIG figure 3 without nose bridge, nose pad, reinforcement strips and elastic bands.
- the two fold flanks 4, 4 ⁇ which meet in the first fold on the fold back 3 on the outside, have the same height
- the two fold flanks, which on the fold back of the following fold on the Meet outside, compared to the fold flanks of the first fold 3 have a lower height, whereby several consecutive isosceles triangles are formed, in which the height of the legs of equal length decreases both from the top and from the bottom inwards.
- the first fold back 3 ⁇ on the inside of the mask can be sewn, welded or glued to the lower edge 10 (see arrow) in such a way that the two fold flanks of the first fold form a tunnel through which a rubber band can be attached the mask can be pulled through the head.
- the first fold back 3 ⁇ on the inside of the mask can be sewn, welded or glued to the upper edge 6 (see arrow) on the other side in such a way that the two fold flanks of the first fold form a tunnel into which the Nose clip can be incorporated and/or through which an elastic band can be pulled to attach the mask to the head.
- FIG 5 a cross section through a further embodiment of a mask 2 is shown schematically, which basically has the same folding as the embodiment of FIG figure 4 .
- the multiply folded blank of the filter medium extends between the upper edge 6 and the lower edge 10 of the mask 2 and forms several fold backs 3, 3', 3", 3′′′ on the outside of the mask 2.
- the fold backs of the two innermost folds are connected or glued to the flanks of the folds that follow outwards via a seam 16. If the two innermost folds are then folded outwards, a pocket 13 is formed, into which a stiffening strip 14 can be inserted Pocket 13 may then be closed by sewing, welding or gluing so that stiffening strip 14 is permanently retained therein.
Description
Die vorliegende Erfindung betrifft einen Mund-Nase-Schutz mit einer Maske zum gleichzeitigen Abdecken von Mund und Nase eines Menschen, wobei die Maske aus einem Zuschnitt eines flächigen Filtermediums besteht.The present invention relates to a mouth and nose protector with a mask for covering a person's mouth and nose at the same time, the mask consisting of a blank of a flat filter medium.
Eine Maske ist eine Gesichtsabdeckung, die das Gesicht eines Menschen teilweise oder vollständig abdeckt. Um die Übertragung von Krankheitserregern durch Sekrettröpfchen zu reduzieren, werden insbesondere im medizinischen und pflegerischen Bereich Gesichts-Halbmasken verwendet, die aus einer oder mehreren Papier- bzw. Vliesschichten bestehen, die mit Bändern oder Gummis am Hinterkopf oder hinter den Ohren befestigt werden können. Da die Maske dabei gleichzeitig Mund und Nase abdeckt, bezeichnet man diese Halbmasken auch als Mund-Nase-Schutz.A mask is a face covering that covers part or all of a person's face. In order to reduce the transmission of pathogens through secretion droplets, face half masks are used, particularly in the medical and nursing sector, which consist of one or more paper or fleece layers that can be attached to the back of the head or behind the ears with ribbons or rubber bands. Since the mask covers the mouth and nose at the same time, these half masks are also referred to as mouth-nose protection.
Die Maske eines typischen Mund-Nase-Schutzes besteht aus einem Zuschnitt eines flächigen Filtermediums, wobei das Filtermedium aus einer oder mehreren Schichten Papier bzw. Kunststoffvlies bestehen kann. An der Maske eines Mund-Nase-Schutzes sind zumeist zusätzliche Einrichtungen vorgesehen, die insbesondere für das Halten und Positionieren der Maske am Kopf bestimmt sind. Beispielsweis ist am oberen Rand des Filtermaterialzuschnitts der Maske oft ein flexibler Metallbügel mittig vorgesehen. Mit diesem kann der Mund-Nase-Schutz an den Nasenrücken gedrückt und angeformt werden, damit der Mund-Nase-Schutz dort bündig mit dem Gesicht abschließt. An den seitlichen Rändern sind an der Maske des Mund-Nase-Schutzes typischerweise Bänder oder Gummis vorgesehen, mit denen der Mund-Nase-Schutz beim Tragen am Hinterkopf oder hinter den Ohren befestigt wird.The mask of a typical mouth and nose protection consists of a cut of a flat filter medium, whereby the filter medium can consist of one or more layers of paper or plastic fleece. Additional devices are usually provided on the mask of a mouth and nose protector, which are intended in particular for holding and positioning the mask on the head. For example, a flexible metal bracket is often provided in the middle at the upper edge of the filter material blank of the mask. With this, the mouth and nose protection can be pressed against the bridge of the nose and shaped so that the mouth and nose protection is flush with the face. On the side edges of the mouth and nose protection mask, there are typically straps or elastics with which the mouth and nose protection is attached to the back of the head or behind the ears when worn.
Mund-Nase-Schutze werden je nach Filterleistung in verschiedene Typenklassen unterteilt, und je höher die Filterleistung wird, desto größer wird typischerweise auch der Atemwiderstand. Besonders hohe Anforderungen werden an solche Ausführungsformen gestellt, die den Standards für Atemschutzmasken (FFP-1, FFP-2, FFP-3 oder BFE 98) genügen sollen.Mouth and nose protectors are divided into different type classes depending on the filter performance, and the higher the filter performance, the greater the breathing resistance typically becomes. Particularly high demands are placed on those embodiments that are intended to meet the standards for respiratory protection masks (FFP-1, FFP-2, FFP-3 or BFE 98).
Beispiele für Masken finden sich z.B. in den Dokumenten
Eine besondere Herausforderung stellt die stark variable Gesichtsanatomie der verschiedener Anwender eines Mund-Nase-Schutzes dar. Es besteht daher ein Bedarf nach einem Mund-Nase-Schutz, der sich auch an unterschiedlichste Gesichtsanatomien gut anpassen kann, damit der Mund-Nase-Schutz allseits dicht am Gesicht anliegt. Dies ist wichtig, um zu verhindern, das an den Rändern des Mund-Nase-Schutzes ungefilterte Luft ein- oder ausströmen kann. Des Weiteren besteht ein Bedarf nach einem Mund-Nase-Schutz, der bei möglichst geringem Atemwiderstand höchstmöglich Filterleistung liefert.The highly variable facial anatomy of the different users of mouth and nose protection poses a particular challenge. There is therefore a need for mouth and nose protection that which can also adapt well to a wide variety of facial anatomies so that the mouth and nose protection fits snugly on the face on all sides. This is important to prevent unfiltered air from flowing in or out at the edges of the face mask. There is also a need for mouth and nose protection that delivers the highest possible filter performance with the lowest possible breathing resistance.
Erfindungsgemäß wird daher ein Mund-Nase-Schutz mit einer Maske zum gleichzeitigen Abdecken von Mund und Nase eines Menschen vorgeschlagen, wobei die Maske aus einem Zuschnitt eines flächigen Filtermediums besteht, der dadurch gekennzeichnet ist, dass der Zuschnitt zwischen dem oberen Rand der Maske und dem unteren Rand der Maske horizontal zick-zack-gefaltet ist und wenigstens 5 Falten ausbildet, die jeweils einen auf der Außenseite der Maske liegenden Faltenrücken aufweisen und jeweils zwei von dem Faltenrücken ausgehende Faltenflanken, wobei die Höhe der Faltenflanken sowohl vom oberen Rand der Maske als auch vom unteren Rand der Maske zur Mitte der Maske hin abnimmt.According to the invention, a mouth and nose protector with a mask for covering the mouth and nose of a person at the same time is therefore proposed, the mask consisting of a blank of a flat filter medium, which is characterized in that the blank between the upper edge of the mask and the bottom edge of the mask is horizontally zig-zag folded and forms at least 5 folds, each of which has a fold back lying on the outside of the mask and two fold flanks extending from the fold back, with the height of the fold flanks rising both from the upper edge of the mask and decreases from the bottom edge of the mask towards the center of the mask.
Dadurch, dass die Maske wenigstens fünf Falten mit einem auf der Außenseite der Maske liegenden Faltenrücken aufweist, liegen auf der inneren Maskenseite wenigstens vier Faltenrücken vor, woraus sich in der Summe insgesamt wenigstens neun Faltenrücken ergeben, zwischen denen sich das Filtermaterial über die Faltenflanken flächig erstreckt. Auf diese Weise ergibt sich eine relativ große Filterfläche, die von dem erfindungsgemäßen Mund-Nase-Schutz bereitgestellt wird, und diese relativ große Filterfläche bietet einen signifikant geringeren Atemwiderstand als ein vergleichbarer Mund-Nase-Schutz mit insgesamt kleinerer Filterfläche.Because the mask has at least five folds with a fold back lying on the outside of the mask, there are at least four fold backs on the inner side of the mask, which results in a total of at least nine fold backs, between which the filter material extends over the fold flanks . This results in a relatively large filter area provided by the mouth and nose protector according to the invention, and this relatively large filter area offers a significantly lower breathing resistance than a comparable mouth and nose protector with a smaller filter area overall.
Die Bereitstellung dieser großen Filterfläche bei gleichzeitig guter Passform wird dadurch möglich, dass die Höhe der Faltenflanken sowohl vom oberen Rand der Maske als auch vom unteren Rand der Maske zur Mitte hin abnimmt. Durch diese besondere Gestaltung passt sich der erfindungsgemäße Mund-Nase-Schutz beim Tragen der jeweiligen Anatomie des Gesichts optimal an und stellt sicher, dass der Mund-Nase-Schutz allseits bündig anliegen kann.The provision of this large filter surface with a good fit at the same time is made possible by the fact that the height of the fold flanks decreases both from the upper edge of the mask and from the lower edge of the mask towards the middle. Due to this special design, the mouth and nose protector according to the invention adapts optimally to the respective anatomy of the face when worn and ensures that the mouth and nose protector can fit flush on all sides.
Eine Falte im Sinne der vorliegenden Erfindung besteht aus einem Faltenrücken und jeweils zwei von dem Faltenrücken ausgehende Faltenflanken. Der Faltenrücken verläuft auf jedem horizontalen Knick des zick-zack-gefalteten Filtermediums, und zwischen einem Faltenrücken auf der Außenseite und den beiden jeweils nächsten Faltenrücken auf der Innenseite erstrecken sich die jeweiligen Faltenflanken. Die Höhe dieser Faltenflanken ist die Distanz zwischen den zwei Faltenrücken, zwischen denen sich die jeweilige Faltenflanke erstreckt. Da die Faltenrücken über den Zuschnitt des Filtermediums parallel verlaufen, ist die Höhe einer Faltenflanke durchgängig konstantA fold in the sense of the present invention consists of a fold back and two fold flanks starting from the fold back. The back of the fold runs on each horizontal bend in the zigzag-folded filter medium, and the respective fold flanks extend between a fold back on the outside and the two next next fold backs on the inside. The height of these fold flanks is the distance between the two fold backs between which the respective fold flank extends. Because the pleated back over parallel to the cut of the filter medium, the height of a fold flank is constant throughout
Die Zick-zack-Faltung der Maske ist horizontal ausgerichtet. D.h., dass die Faltenrücken sich horizontal zwischen dem oberen Rand und dem unteren Rand des Mund-Nase-Schutzes erstrecken. Die Begriffe oben und unten beziehen sich hier auf die Situation beim Tragen des Mund-Nase-Schutzes, wobei der obere Rand über die Nase verläuft und der untere Rand über das Kinn oder unter dem Kinn verläuft.The zigzag fold of the mask is aligned horizontally. This means that the ridges of the folds extend horizontally between the upper edge and the lower edge of the mouth and nose protector. The terms top and bottom here refer to the situation when wearing the mouth and nose protector, with the top edge running over the nose and the bottom edge running over the chin or under the chin.
Die Maske hat eine Innenseite und eine Außenseite. Die Innenseite der Maske ist die Seite, die beim Tragen des Mund-Nase-Schutzes in Richtung des Gesichts weist. Die Außenseite der Maske ist die Seite, die beim Tragen des Mund-Nase-Schutzes nach außen weist. Zählt man die Faltenrücken vom oberen und unteren Rand der Maske bis zur Mitte durch, so weisen - je nach dem wie die Zick-Zack-Faltung ausgerichtet ist - die ungeradzahligen Faltenrücken nach innen, d.h. in Richtung des Gesichtes, und alle geradzahligen Faltenrücken nach außen, oder anders herum.The mask has an inside and an outside. The inside of the mask is the side that faces the face when wearing the mouth and nose protector. The outside of the mask is the side that faces outwards when wearing the mouth and nose protector. If you count the ridges from the top and bottom edge of the mask to the middle, then - depending on how the zigzag fold is aligned - the odd-numbered ridges point inwards, i.e. towards the face, and all the even-numbered ridges point outwards , or the other way around.
Bei bestimmten Ausführungsformen ist die Maske aus einem im Wesentlichen rechteckigen Zuschnitt des Filtermediums gebildet. Grundsätzlich kommen jedoch auch andere Zuschnittsgeometrien in Betracht, wie z.B. ein sechseckiger oder gar achteckiger Zuschnitt, solange sichergestellt ist, dass die bereitgestellte Maske groß genug ist, um gleichzeitig Mund und Nase abzudecken.In certain embodiments, the mask is formed from a substantially rectangular blank of filter media. In principle, however, other cut geometries can also be considered, such as a hexagonal or even octagonal cut, as long as it is ensured that the mask provided is large enough to cover the mouth and nose at the same time.
Erfindungsgemäß weist die Maske wenigstens 5 Falten auf, die jeweils einen auf der Außenseite der Maske liegenden Faltenrücken aufweisen. Nimmt man die Anzahl der Faltenrücken auf der inneren Maske und die Anzahl der Faltenrücken auf der äußeren Maskenseite zusammen, so ergibt sich in der Summe eine Anzahl von wenigstens 9 Faltenrücken pro erfindungsgemäßem Mund-Nase-Schutz.According to the invention, the mask has at least 5 folds, each of which has a fold back lying on the outside of the mask. If the number of ridges on the inner mask and the number of ridges on the outer side of the mask are taken together, the sum total is at least 9 ridges per mouth and nose protector according to the invention.
Bei bestimmten Ausführungsformen bildet der gefaltete Zuschnitt 6 bis 12 Falten aus, die jeweils einen auf der Außenseite der Maske liegenden Faltenrücken aufweisen und jeweils zwei von dem Faltenrücken ausgehende Faltenflanken, wobei die Höhe der Faltenflanken sowohl vom oberen Rand der Maske als auch vom unteren Rand der Maske zur Mitte der Maske hin abnimmt. Bei besonderen Ausführungsformen bildet der gefaltete Zuschnitt 6 bis 10 solcher Falten aus. Bei besonderen Ausführungsformen bildet der gefaltete Zuschnitt 7 bis 9 solcher Falten aus.In certain embodiments, the folded
Bei einer speziellen Ausführungsform sind 9 Falten mit auf der Außenseite der Maske liegendem Faltenrücken vorgesehen. Bei einer weiteren speziellen Ausführungsform, sind 7 Falten mit auf der Außenseite der Maske liegendem Faltenrücken vorgesehen. Bei weiteren speziellen Ausführungsformen, die beispielsweise für Kinder besonders geeignet sind, sind 5 oder 6 Falten mit auf der Außenseite der Maske liegendem Faltenrücken vorgesehen.In a specific embodiment, 9 folds are provided with the back of the folds lying on the outside of the mask. In a further special embodiment, 7 folds are provided with the back of the folds lying on the outside of the mask. In further special embodiments, which are particularly suitable for children, for example, 5 or 6 folds are provided with the back of the folds lying on the outside of the mask.
Bei bevorzugten Ausführungsformen ist die Anzahl der Faltenrücken auf der äußeren Maskenseite um 1 größer als die Anzahl der Faltenrücken auf der inneren Maskenseite.In preferred embodiments, the number of ridges on the outer side of the mask is 1 greater than the number of ridges on the inner side of the mask.
Damit die Kinnpartie des Gesichts gut umschlossen werden kann, ist bei bestimmten Ausführungsformen die Anzahl der Falten gezählt vom unteren Rand der Maske bis zur Mitte um 1 größer als die Anzahl der Falten gezählt vom oberen Rand der Maske bis zur Mitte.So that the chin area of the face can be well enclosed, in certain embodiments the number of folds counted from the lower edge of the mask to the middle is 1 greater than the number of folds counted from the upper edge of the mask to the middle.
Bei einer speziellen Ausführungsform beträgt die Anzahl der Falten mit nach außen weisendem Faltenrücken gezählt vom oberen Rand der Maske bis zur Mitte 4 und die Anzahl der Falten gezählt vom unteren Rand der Maske bis zur Mitte 5. Bei einer weiteren speziellen Ausführungsform beträgt die Anzahl der Falten mit nach außen weisendem Faltenrücken gezählt vom oberen Rand der Maske bis zur Mitte 3 und die Anzahl der Falten gezählt vom unteren Rand der Maske bis zur Mitte 4.In a specific embodiment, the number of folds with the back of the folds facing out counted from the top edge of the mask to the center is 4 and the number of folds counted from the bottom edge of the mask to the center is 5. In another specific embodiment, the number of folds is with the back of the pleats facing outward counted from the top edge of the mask to the
Die Höhe der Faltenflanken nimmt erfindungsgemäß sowohl vom oberen Rand der Maske als auch vom unteren Rand der Maske zur Mitte hin ab. Bei bestimmten Ausführungsformen nimmt die Höhe jeder Faltenflanke im Vergleich zur jeweils vorangegangenen Faltenflanke ab.According to the invention, the height of the fold flanks decreases both from the upper edge of the mask and from the lower edge of the mask towards the center. In certain embodiments, the height of each fold flank decreases compared to the previous fold flank.
Bei alternativen Ausführungsformen haben die beiden Faltenflanken einer ersten Falte die gleiche Höhe, und die beiden Faltenflanken, die der darauf folgenden Falte haben gegenüber den Faltenflanken der Falte eine geringere Höhe, wodurch die Falten mehrere aufeinanderfolgende gleichschenklige Dreiecke bilden, bei denen die Höhe der gleichlangen Schenkel sowohl vom oberen als auch vom unteren Rand nach innen abnimmt.In alternative embodiments, the two fold flanks of a first fold have the same height, and the two fold flanks of the following fold have a lower height than the fold flanks of the fold, as a result of which the folds form several consecutive isosceles triangles in which the height of the limbs of equal length decreases inward from both the top and bottom edges.
Bei bestimmten Ausführungsformen nimmt die Höhe aller Falten ausgehend vom oberen und/oder unteren Rand zur Mitte hin ab. Bei bestimmten Ausführungsformen sind die ersten beiden Falten am oberen und/oder am unteren Rand gleich groß und erst die Höhe aller in Richtung Mitte der Maske folgenden Falten nimmt sukzessive ab.In certain embodiments, the height of each pleat decreases from the top and/or bottom edge toward the center. In certain embodiments, the first two folds at the top and/or bottom edge are of the same size and only the height of all the folds that follow in the direction of the center of the mask gradually decreases.
Das Filtermedium, aus dem der Zuschnitt der Maske besteht, ist vorzugsweise ein Kunststoffvlies aus einem synthetischen Polymer oder ein Glasfaservlies. Besonders bevorzugt ist ein Kunststoffvlies aus Polypropylen, Polyethylen oder Polytetrafluorethylen.The filter medium from which the blank of the mask is made is preferably a plastic fleece made of a synthetic polymer or a glass fiber fleece. A plastic fleece made of polypropylene, polyethylene or polytetrafluoroethylene is particularly preferred.
Der Begriff Vlies ist hier so zu verstehen, dass es sich dabei um ein Gebilde aus Fasern handelt, die nicht systematisch verkreuzt bzw. verschlungen sind, wie es beim Weben, Wirken, Stricken oder Flechten der Fall ist. Die erfindungsgemäß eingesetzten Vliese sind flexibel und faltbar, wobei faltbar in diesem Zusammenhang bedeutet, dass bei der Faltung stabile Faltenrücken entstehen, die sich ohne mechanisches Einwirken nicht spontan wieder entfalten.The term fleece is to be understood here in such a way that it is a structure made of fibers that are not systematically crossed or intertwined, as is the case with weaving, warp-knitting, knitting or braiding. The webs used according to the invention are flexible and foldable, foldable in this context meaning that stable fold backs are formed during folding, which do not spontaneously unfold again without mechanical action.
Bei bestimmten Ausführungsformen der Erfindung besteht die Maske aus einer Lage Filtermedium. Bei alternativen Ausführungsformen besteht das Filtermedium aus zwei, drei, vier, fünf oder mehr Lagen. Bei manchen mehrlagigen Ausführungsformen bestehen alle Lagen aus dem gleichen Vliesmaterial. Bei alternativen Ausführungsformen bestehen die Lage auf der äußeren Seite der Maske und/oder die Lage auf der inneren Seite der Maske aus einem Material, das sich von dem Material der anderen Lage(n) unterscheidet.In certain embodiments of the invention, the mask consists of a layer of filter medium. In alternative embodiments, the filter medium consists of two, three, four, five or more layers. In some multi-layer embodiments, all layers consist of the same fleece material. In alternative embodiments, the layer on the outside of the mask and/or the layer on the inside of the mask are made of a material that differs from the material of the other layer(s).
Vorzugsweise ist die Dicke der Vlieslage(n) möglichst gering gewählt, um Material zu sparen, den Atemwiderstand gering zu halten und einen mehrlagigen Aufbau zu ermöglichen. Vorzugsweise liegt die Dicke des Vliesmaterials im Bereich von 0,1 bis 1,0 mm, besonders bevorzugt im Bereich von 0,1 bis 0,8 mm.The thickness of the fleece layer(s) is preferably chosen to be as small as possible in order to save material, to keep the breathing resistance low and to enable a multi-layer structure. The thickness of the fleece material is preferably in the range from 0.1 to 1.0 mm, particularly preferably in the range from 0.1 to 0.8 mm.
Bei bestimmten Ausführungsformen ist die Abnahme der Höhe der Faltenflanken so definiert, dass die Höhe einer Faltenflanke vom oberen bzw. vom unteren Rand in Richtung zur Mitte hin gegenüber der Höhe der vorangegangenen Faltenflanke um 8 bis 32 % geringer ist. Bei bestimmten Ausführungsformen nimmt der Wert der prozentualen Abnahme sowohl vom oberen als auch vom unteren Rand zur Mitte hin zu.In certain embodiments, the decrease in the height of the fold flanks is defined such that the height of a fold flank from the upper or lower edge towards the center is 8 to 32% less than the height of the preceding fold flank. In certain embodiments, the percent decrease value increases from both the top and bottom edges toward the center.
Beispielsweise kann die Abnahme der Höhe von der ersten Faltenflanke zur zweiten Faltenflanke im Bereich von 8 bis 10 % liegen, die Abnahme von der zweiten Faltenflanke zur dritten Faltenflanke im Bereich von 18 bis 24 % und die Abnahme von der dritten Faltenflanke zur vierten Faltenflanke im Bereich von 25 bis 32 %.For example, the decrease in height from the first fold flank to the second fold flank can be in the range of 8 to 10%, the decrease from the second fold flank to the third fold flank in the range of 18 to 24% and the decrease from the third fold flank to the fourth fold flank in the range from 25 to 32%.
Bei einer konkreten Ausführungsform liegt die Höhe der ersten Faltenflanke im Bereich von 19 bis 21 mm, die Höhe der zweiten Faltenflanke im Bereich von 17 bis 19 mm, die Höhe der dritten Faltenflanke im Bereich von 13 bis 15 mm und die Höhe der vierten Faltenflanke im Bereich von 9 bis 11 mm.In a specific embodiment, the height of the first fold flank is in the range from 19 to 21 mm, the height of the second fold flank is in the range from 17 to 19 mm, and the height of the third fold edge in the range of 13 to 15 mm and the height of the fourth fold edge in the range of 9 to 11 mm.
Bei den Ausführungsformen, bei denen die beiden Faltenflanken einer erste Falte die gleiche Höhe haben, und die beiden Faltenflanken, der darauf folgenden Falte, gegenüber den Faltenflanken der ersten Falte eine geringere Höhe haben, wodurch die Falten mehrere aufeinanderfolgende gleichschenklige Dreiecke bilden, bei denen die Höhe der gleichlangen Schenkel sowohl vom oberen als auch vom unteren Rand zur Mitte hin abnimmt, beziehen sich die oben angegebenen prozentualen Werte auf die Abnahme der Höhe der gleichlangen Schenkel einer Falte bezogen auf die Höhe der gleichlangen Schenkel der vorangegangenen Falte.In the embodiments in which the two fold flanks of a first fold have the same height and the two fold flanks of the following fold have a lower height than the fold flanks of the first fold, as a result of which the folds form several consecutive isosceles triangles in which the If the height of the leg of the same length decreases both from the upper and the lower edge towards the middle, the percentage values given above refer to the decrease in the height of the leg of the same length in a fold in relation to the height of the leg of the same length in the preceding fold.
Dementsprechend ist bei bestimmten Ausführungsformen die Abnahme der Höhe der gleichlangen Schenkel einer der Falten bezogen auf die Höhe der gleichlangen Schenkel der vorangegangenen Falte um 8 bis 32 % geringer.Accordingly, in certain embodiments, the decrease in the height of the legs of the same length of one of the folds is reduced by 8 to 32% relative to the height of the legs of the same length of the preceding fold.
Auch hier kann bei bestimmten Ausführungsformen der Wert der prozentualen Abnahme von den Rändern zur Mitte hin zunehmen. Bei manchen Ausführungsformen liegt beispielsweise die Abnahme der Höhe der gleichlangen Schenkel einer zweiten Falte bezogen auf die Höhe der gleichlangen Schenkel einer ersten Falte im Bereich von 8 bis 10 %, die Abnahme der Höhe der gleichlangen Schenkel einer dritten Falte bezogen auf die Höhe der gleichlangen Schenkel der zweiten Falte im Bereich von 18 bis 24 % und die Abnahme der Höhe der gleichlangen Schenkel der vierten Falte bezogen auf die Höhe der gleichlangen Schenkel der dritten Falte im Bereich von 25 bis 32 %.Again, in certain embodiments, the percent decrease value may increase from the edges toward the center. In some embodiments, for example, the decrease in the height of the legs of the same length of a second fold in relation to the height of the legs of the same length in a first fold is in the range of 8 to 10%, the decrease in the height of the legs of the same length in a third fold in relation to the height of the legs of the same length of the second fold in the range of 18 to 24% and the reduction in the height of the equal-length side of the fourth fold in relation to the height of the equal-length side of the third fold in the range of 25 to 32%.
Bei bestimmten Ausführungsformen befindet sich in der Mitte der Maske eine kleine Falte und die beiden nach oben und unten folgenden größeren Falten sind gleich groß. Und die beiden wiederum darauf nach oben und unten folgenden größeren Falten sind ebenfalls gleich groß.In certain embodiments, there is a small crease in the middle of the mask and the two larger creases following up and down are the same size. And the two larger folds that follow up and down are also the same size.
Bei anderen Ausführungsformen, sind die beiden in der Mitte der Maske aufeinandertreffenden Falten gleich groß, und die beiden nach oben und unten folgenden größeren Falten sind ebenfalls gleich groß, und die beiden wiederum darauf nach oben und unten folgenden größeren Falten sind ebenfalls gleich groß.In other embodiments, the two pleats that meet in the middle of the mask are the same size, and the two major pleats that follow up and down are also the same size, and the two major pleats that follow that, up and down, are also the same size.
Um die Faltung der Maske zu fixieren, ist an den vertikal verlaufenden seitlichen Rändern der Maske eine Klebung, Naht oder Ultraschall-Verschweißung vorgesehen. Beim Anziehen und Tragen der Maske bleibt das gefaltete Filtermedium der Maske damit an den seitlichen Rändern gerafft, während sich die Faltung im Bereich zwischen den seitlichen Rändern aufspreizen läßt, um die Maske an die Physiognomie des Gesichts des Anwenders anzupassen.In order to fix the folding of the mask, an adhesive bond, seam or ultrasonic welding is provided on the vertically running lateral edges of the mask. When putting on and wearing the mask, the folded filter medium of the mask remains on the side edges gathered, while the fold can be spread open in the area between the lateral edges in order to adapt the mask to the physiognomy of the user's face.
Bei einer bevorzugten Ausführungsform ist am oberen horizontalen Rand der Maske ein biegsamer Nasenbügel angeordnet, der beispielsweise aus einem formstabil biegsamen Kunststoff oder Metall bestehen kann. Vorzugsweise ist der Nasenbügel am oberen Rand der Maske in einem horizontal verlaufenden Tunnel geführt, der dadurch gebildet wird, dass die äußere Kante der obersten Faltenflanke mit der in Richtung Mitte der Maske folgenden Faltenflanke vernäht, verklebt oder verschweißt wird.In a preferred embodiment, a flexible nose piece is arranged on the upper horizontal edge of the mask, which can consist, for example, of a dimensionally stable, flexible plastic or metal. The nose clip is preferably guided at the upper edge of the mask in a horizontally running tunnel which is formed by the outer edge of the uppermost fold flank being sewn, glued or welded to the fold flank following towards the center of the mask.
Bei einer bevorzugten Ausführungsform ist am oberen horizontalen Rand der Maske ein Nasenpolster angeordnet, das beispielsweise aus einem Schaumstoff bestehen kann. Vorzugsweise ist das Nasenpolster an der äußersten Faltenflanke mit der Maske vernäht, verklebt oder verschweißt.In a preferred embodiment, a nose pad is arranged on the upper horizontal edge of the mask, which can consist of a foam, for example. The nose pad is preferably sewn, glued or welded to the mask at the outermost fold flank.
Vorzugsweise ist an den vertikal verlaufenden seitlichen Rändern der Maske ein Gummi oder ein Band zum Befestigen des Mund-Nase-Schutzes am Kopf angeordnet. Die Höhe dieser Befestigung ist so bemessen, dass die Befestigung entweder am Hinterkopf oder an den Ohren erfolgen kann.A rubber band or a strap for fastening the mouth and nose protector to the head is preferably arranged on the vertically running lateral edges of the mask. The height of this attachment is such that it can be attached either to the back of the head or to the ears.
Das Band oder Gummi am oberen Rand der Maske ist vorzugsweise mit den seitlichen Rändern der Maske vernäht, verklebt oder verschweißt. Vorzugsweise ist das Band oder Gummi am unteren Rand der Maske durch einen horizontal verlaufenden Tunnel geführt, der dadurch gebildet wird, dass die äußere Kante der untersten Faltenflanke mit der in Richtung Mitte der Maske folgenden Faltenflanke vernäht, verklebt oder verschweißt wird. Hierdurch wird die Maske beim Tragen am Kinn oder darunter gerafft, und schließt so dort dicht ab.The band or rubber at the top edge of the mask is preferably sewn, glued or welded to the side edges of the mask. Preferably, the band or elastic at the lower edge of the mask is guided through a horizontally running tunnel, which is formed by the outer edge of the lowermost fold flank being sewn, glued or welded to the fold flank following towards the center of the mask. As a result, the mask is gathered when worn on the chin or below, and thus closes tightly there.
Bei bestimmten Ausführungsformen ist in der Mitte der Maske ein Versteifungsstreifen vorgesehen. Der Versteifungsstreifen kann aufgenäht, aufgeklebt, aufgesprüht, mit dem Filtermedium der Maske verschweißt oder in eine Tasche oder einen Tunnel, die/der durch die Faltung gebildet wird, eingelegt sein. Der Versteifungsstreifen dient dafür, den mittleren Bereich der Maske so zu verstärken, dass dieser insbesondere beim Einatmen nicht zu eng an der Gesichtsfläche zum Anliegen kommt. Hierfür erstreckt sich der Versteifungsstreifen von der Maskenmitte horizontal in beide Richtungen zu den seitlichen Rändern wenigstens über 70%, wenigstens über 80%, wenigstens über 90% der Maskenbreite oder gar über die gesamte Maskenbreite.In certain embodiments, a stiffening strip is provided in the center of the mask. The stiffening strip can be sewn, glued, sprayed, welded to the filter media of the mask, or inserted into a pocket or tunnel formed by the fold. The stiffening strip is used to reinforce the central area of the mask so that it does not come too close to the face surface, especially when inhaling. For this purpose, the stiffening strip extends from the center of the mask horizontally in both directions to the lateral edges at least over 70%, at least over 80%, at least over 90% of the mask width or even over the entire mask width.
Der Versteifungsstreifen kann auf der Außenseite der Maske oder auf der Innenseite der Maske vorgesehen sein. Bei bestimmten Ausführungsformen ist sowohl auf der Innenseite als auch auf der Außenseite der Maske ein Versteifungsstreifen aufgebracht, wobei sich die Art der Anbringung des Versteifungsstreifens auf der Innenseite von der Art der Anbringung des Versteifungsstreifens auf der Außenseite unterscheiden kann.The stiffening strip can be provided on the outside of the mask or on the inside of the mask. In certain embodiments, a stiffening strip is applied to both the inside and the outside of the mask, and the way the stiffening strip is attached to the inside can differ from the way the stiffening strip is attached to the outside.
Bei Versteifungsstreifen, die aufgesprüht sind, ist Versteifungsmaterial (vorzugsweise ein Kunststoffmaterial) durch Sprühen in einer Schichtdicke im Bereich von 0,1 bis 1,0 mm auf den zu versteifenden Bereich der Maske aufgesprüht. Besonders bevorzugte Kunststoffmaterialien sind hier Polypropylen, Polyethylen und Polytetrafluorethylen.For stiffening strips which are sprayed on, stiffening material (preferably a plastics material) is applied by spraying in a layer thickness in the range 0.1 to 1.0 mm onto the area of the mask to be stiffened. Particularly preferred plastic materials here are polypropylene, polyethylene and polytetrafluoroethylene.
Bei bestimmten Ausführungsformen besteht der Versteifungsstreifen aus einem separaten Kunstoffstreifen, der aufgenäht, aufgeschweißt oder aufgeklebt wird. Besonders bevorzugt sind hier Streifen aus Polypropylen, Polyethylen und Polytetrafluorethylen. Vorzugsweise weist das hier eingesetzte Material aufgrund seiner stofflichen Beschaffenheit oder aufgrund seiner größeren Materialstärke eine höhere Steifigkeit als das Material des Filtermediums der Maske auf.In certain embodiments, the stiffening strip consists of a separate plastic strip that is sewn, welded or glued on. Strips made of polypropylene, polyethylene and polytetrafluoroethylene are particularly preferred here. The material used here is preferably more rigid than the material of the filter medium of the mask due to its material composition or due to its greater material thickness.
Bei bestimmten Ausführungsformen, sind die Faltenflanken einer in der Mitte der Maske liegenden Falte oder die zwei aneinandergrenzenden Faltenflanken von zwei in der Mitte der Maske benachbarten Falten miteinander vernäht, verklebt oder verschweißt, wodurch in diesem Bereich eine höhere Steifigkeit erreicht wird. Bei anderen Ausführungsformen sind die Faltenflanken einer in der Mitte der Maske liegenden Falte oder die zwei aneinandergrenzenden Faltenflanken von zwei in der Mitte der Maske benachbarten Falten zu einem Tunnel vernäht, verklebt oder verschweißt, in dem ein Versteifungsstreifen, eingeschoben ist. In diesen Fällen besteht der Versteifungsstreifen vorzugsweise aus Kunstoff, wie z.B. Polypropylen, Polyethylen und Polytetrafluorethylen, oder Metall.In certain embodiments, the fold flanks of a fold lying in the middle of the mask or the two adjoining fold flanks of two adjacent folds in the middle of the mask are sewn, glued or welded together, whereby greater rigidity is achieved in this area. In other embodiments, the fold flanks of a fold in the middle of the mask or the two adjoining fold flanks of two adjacent folds in the middle of the mask are sewn, glued or welded to form a tunnel into which a stiffening strip is inserted. In these cases, the stiffening strip is preferably made of plastic, such as polypropylene, polyethylene and polytetrafluoroethylene, or metal.
Bei besonderen Ausführungsformen sind die mittleren beiden Falten gleich groß und deren Faltenrücken sind mit den Faltenflanken der jeweils nach außen folgenden Falten vernäht, verklebt oder verschweißt. Werden die beiden innersten Falten dann nach außen aufgeklappt, bildet sich eine Tasche, in die ein Versteifungsstreifen eingelegt werden kann. Diese Tasche kann dann durch Vernähen, Verschweißen oder Verkleben verschlossen werden, so dass der Versteifungsstreifen darin dauerhaft gehalten wird. Auch in diesen Fällen besteht der Versteifungsstreifen vorzugsweise aus Kunstoff, wie z.B. Polypropylen, Polyethylen und Polytetrafluorethylen, oder Metall. Insbesondere durch die Auswahl des verwendeten Filtermaterials und/oder durch die Wahl der Anzahl der eingesetzten Filtermateriallagen können unterschiedliche Filterleistungen erreicht werden. Bei bestimmten Ausführungsformen erfüllt der erfindungsgemäße Mund-Nase-Schutz die Standards gemäß FFP-1, FFP-2, FFP-3 oder BFE 98.In particular embodiments, the two middle folds are of the same size and their fold backs are sewn, glued or welded to the fold flanks of the folds following in each case to the outside. If the two innermost folds are then folded outwards, a pocket forms into which a stiffening strip can be inserted. This pocket can then be closed by sewing, welding or gluing so that the stiffening strip is permanently held therein. In these cases, too, the stiffening strip is preferably made of plastic, such as polypropylene, polyethylene and polytetrafluoroethylene, or metal. Different filter performances can be achieved in particular through the selection of the filter material used and/or through the selection of the number of filter material layers used. In certain embodiments, the mouth and nose protector according to the invention meets the standards according to FFP-1, FFP-2, FFP-3 or BFE 98.
Von der vorliegenden Erfindung umfasst ist auch ein Verfahren zur Herstellung eines Mund-Nase-Schutzes der oben beschriebenen Art, wobei man bei dem Verfahren einen Zuschnitt eines flächigen Filtermediums zwischen dem oberen Rand der späteren Maske und deren unteren Rand horizontal zick-zack-faltet, so dass wenigstens fünf Falten ausgebildet werden, die jeweils einen auf der Außenseite der Maske liegenden Faltenrücken aufweisen und jeweils zwei von dem Faltenrücken ausgehende Faltenflanken, wobei die Höhe der Faltenflanken sowohl vom oberen Rand der späteren Maske als auch von deren unterem Rand zur Mitte der Maske hin abnimmt.The present invention also includes a method for producing a mouth and nose protector of the type described above, in which method a blank of a flat filter medium is folded horizontally in a zigzag between the upper edge of the later mask and its lower edge, so that at least five folds are formed, each of which has a fold back lying on the outside of the mask and two fold flanks emanating from the fold back, the height of the fold flanks extending both from the upper edge of the later mask and from its lower edge to the center of the mask decreases towards
Durch weitere Verfahrensmassnahmen lassen sich dann die verschiedenen Merkmale der besonderen Ausführungsformen des erfindungsgemäßen Mund-Nase-Schutzes ausbilden, die oben ausführlich beschrieben wurden.The various features of the special embodiments of the mouth and nose protector according to the invention, which have been described in detail above, can then be formed by further process measures.
Anhand der anhängenden Figuren werden einzelne Merkmale der vorliegenden Erfindung veranschaulicht. Hierbei zeigen
- Figur 1:
- eine schematische Darstellung einer Draufsicht auf eine bestimmte Ausführungsform eines erfindungsgemäßen Mund-Nase-Schutzes im entfalteten Zustand,
- Figur 2:
- eine schematische Darstellung einer Draufsicht auf die Maske der
Ausführungsform von Figur 1 ohne Nasenbügel und Gummibänder, - Figur 3:
- eine schematische Darstellung eines Querschnitts durch eine bestimmte Ausführungsform eines erfindungsgemäßen Mund-Nase-Schutzes,
- Figur 4:
- eine schematische Darstellung eines Querschnitts durch die Maske der
Ausführungsform von Figur 3 ohne Nasenbügel, Nasenpolster, Verstärkungsstreifen und Gummibänder und - Figur 5:
- eine schematische Darstellung eines Querschnitts durch die Maske einer Ausführungsform, bei der ein Verstärkungsstreifen in einer mittigen Faltentasche vorgesehen ist.
- Figure 1:
- a schematic representation of a top view of a specific embodiment of a mouth and nose protector according to the invention in the unfolded state,
- Figure 2:
- FIG. 12 is a schematic representation of a top view of the mask of the embodiment of FIG
figure 1 without nose clip and rubber bands, - Figure 3:
- a schematic representation of a cross section through a specific embodiment of a mouth and nose protector according to the invention,
- Figure 4:
- a schematic representation of a cross-section through the mask of the embodiment of FIG
figure 3 without nose bridge, nose pads, reinforcement strips and rubber bands and - Figure 5:
- Figure 12 is a schematic representation of a cross-section through the mask of an embodiment in which a reinforcement strip is provided in a central gusset pocket.
In
Die in
In
Bei der in
Bei der hier dargestellten Ausführungsform kann der erste Faltenrücken 3` auf der Innenseite der Maske mit dem unteren Rand 10 so vernäht, verschweißt oder verklebt werden (siehe Pfeil), dass die beiden Faltenflanken der ersten Falte einen Tunnel ausbilden, durch den ein Gummiband zur Befestigung der Maske am Kopf durchgezogen werden kann. In derselben Weise kann auch auf der anderen Seite der erste Faltenrücken 3` auf der Innenseite der Maske mit dem oberen Rand 6 so vernäht, verschweißt oder verklebt werden (siehe Pfeil), dass die beiden Faltenflanken der ersten Falte einen Tunnel ausbilden, in den der Nasenbügel eingearbeitet werden kann und/oder durch den ein Gummiband zur Befestigung der Maske am Kopf durchgezogen werden kann.In the embodiment shown here, the first fold back 3` on the inside of the mask can be sewn, welded or glued to the lower edge 10 (see arrow) in such a way that the two fold flanks of the first fold form a tunnel through which a rubber band can be attached the mask can be pulled through the head. In the same way, the first fold back 3` on the inside of the mask can be sewn, welded or glued to the upper edge 6 (see arrow) on the other side in such a way that the two fold flanks of the first fold form a tunnel into which the Nose clip can be incorporated and/or through which an elastic band can be pulled to attach the mask to the head.
In
- 11
- Mund-Nase-SchutzMouth and nose protection
- 22
- Maskemask
- 3, 3`3, 3`
- Faltenrückenwrinkle back
- 4, 4`4, 4`
- Faltenflankefold edge
- 55
- Mitte der Maskecenter of the mask
- 66
- oberer Rand der Masketop edge of the mask
- 77
- Nasenbügelnose clip
- 88th
- Gummiband am oberen RandElastic band at the top
- 99
- Gummiband am unteren RandElastic band at the bottom
- 1010
- unterer Rand der Maskelower edge of the mask
- 1111
- außenOutside
- 1212
- innenInside
- 1313
- TascheBag
- 1414
- Versteifungsstreifenstiffening strips
- 1515
- Nasenpolsternose pads
- 1616
- Nahtseam
Claims (13)
- Mouth-nose protection (1) with a mask (2) for simultaneously covering the mouth and nose of a person, wherein the mask (2) consists of a blank of a flat filter medium, characterized in that the blank is horizontally zigzag-pleated between the upper edge of the mask and the lower edge of the mask and forms at least 5 pleats, which each have a pleat edge (3) lying on the outside of the mask (2) and in each case two pleat flanks (4, 4') extending from the pleat edge (3), characterized in that the height of the pleat flanks (4, 4') decreases both from the upper edge (6) of the mask (2) and from the lower edge (10) of the mask (2) towards the center (5) of the mask (2).
- Mouth-nose protection according to claim 1, wherein the blank forms 6 to 12 pleats, each of which has a pleat edge lying on the outside of the mask and in each case two pleat flanks extending from the pleat edge, wherein the height of the pleat flanks decreases both from the upper edge of the mask and from the lower edge of the mask towards the center of the mask.
- Mouth-nose protection according to one of claims 1 and 2, wherein in the direction towards the center of the mask the height of each pleat flank is less than that of the preceding pleat flank.
- Mouth-nose protection according to any one of claims 1 to 2, wherein the two pleat flanks, of a first pleat, have the same height, and the two pleat flanks, of the subsequent pleat, have a lower height compared to the pleat flanks of the first pleat, whereby the pleats form a plurality of successive isosceles triangles in which the height of the equal-length legs decreases both from the upper edge of the mask and from the lower edge of the mask towards the center of the mask.
- Mouth-nose protection according to any of claims 1 to 4, wherein the blank of the filter medium of which the mask consists is substantially rectangular.
- Mouth-nose protection according to any one of claims 1 to 5, wherein the filter medium consists of non-woven plastic or non-woven glass fiber.
- Mouth-nose protection according to any one of claims 1 to 6, wherein the filter medium consists of a non-woven plastic material made of polypropylene, polyethylene or polytetrafluoroethylene.
- Mouth-nose protection according to any one of claims 1 to 7, wherein the height of a pleat flank in the direction from the edge to the center is 8 to 32% less than the height of the preceding pleat flank or than the height of the pleat flank of the preceding pleat.
- Mouth-nose protection according to any one of the claims 1 to 8, wherein the pleats are fixed by an adhesive, a seam, or an ultrasonic welding provided on the vertically extending lateral edges of the mask.
- Mouth-nose protection according to any one of claims 1 to 9, wherein a flexible nose clip (7) is arranged at the upper edge of the mask.
- Mouth-nose protection according to any one of claims 1 to 10, wherein at least one rubber band or ribbon (8, 9) for fastening the mouth-nose protection to the head is arranged at the lateral edges of the mask.
- Mouth-nose protection according to any one of claims 1 to 11, wherein mouth-nose protection meets the standards FFP-1, FFP-2, FFP-3 or BFE98.
- Mouth-nose protection according to one of the claims 1 to 12, characterized in that the blank of the flat filter medium, which is horizontally zigzag pleated between the upper edge of the mask and the lower edge of the mask, forms 5 or 6 pleats, which each have a pleat edge lying on the outside of the mask and in each case two pleat flanks extending from the pleat edge, the height of the pleat flanks decreasing both from the upper edge of the mask and from the lower edge of the mask towards the center of the mask.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2021/059336 WO2021219347A1 (en) | 2020-04-30 | 2021-04-09 | Mouth-nose protection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202020102424.8U DE202020102424U1 (en) | 2020-04-30 | 2020-04-30 | Mouth-nose protection |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3903612A1 EP3903612A1 (en) | 2021-11-03 |
EP3903612C0 EP3903612C0 (en) | 2023-06-07 |
EP3903612B1 true EP3903612B1 (en) | 2023-06-07 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20195347.8A Active EP3903612B1 (en) | 2020-04-30 | 2020-09-09 | Protective mask for mouth and nose |
Country Status (3)
Country | Link |
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EP (1) | EP3903612B1 (en) |
DE (1) | DE202020102424U1 (en) |
WO (1) | WO2021219347A1 (en) |
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US20220235503A1 (en) * | 2021-01-28 | 2022-07-28 | Aviram F Industries Ltd. | Apparatus and method for manufacturing masks |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4248220A (en) * | 1979-09-10 | 1981-02-03 | American Cyanamid Company | Disposable dust respirator |
US6474336B1 (en) * | 2000-03-20 | 2002-11-05 | Michael Wolfe | Mini pleated face mask |
US20060130841A1 (en) * | 2004-12-22 | 2006-06-22 | Kimberly-Clark Worldwide, Inc | Face mask with horizontal and vertical folds |
-
2020
- 2020-04-30 DE DE202020102424.8U patent/DE202020102424U1/en active Active
- 2020-09-09 EP EP20195347.8A patent/EP3903612B1/en active Active
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2021
- 2021-04-09 WO PCT/EP2021/059336 patent/WO2021219347A1/en active Application Filing
Also Published As
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WO2021219347A1 (en) | 2021-11-04 |
EP3903612A1 (en) | 2021-11-03 |
EP3903612C0 (en) | 2023-06-07 |
DE202020102424U1 (en) | 2020-05-08 |
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