WO2021219347A1 - Protection de la bouche et du nez - Google Patents

Protection de la bouche et du nez Download PDF

Info

Publication number
WO2021219347A1
WO2021219347A1 PCT/EP2021/059336 EP2021059336W WO2021219347A1 WO 2021219347 A1 WO2021219347 A1 WO 2021219347A1 EP 2021059336 W EP2021059336 W EP 2021059336W WO 2021219347 A1 WO2021219347 A1 WO 2021219347A1
Authority
WO
WIPO (PCT)
Prior art keywords
mask
fold
mouth
height
nose
Prior art date
Application number
PCT/EP2021/059336
Other languages
German (de)
English (en)
Inventor
Stefan Barthel
Kai-Uwe BRETSCHEIDER
Original Assignee
Etna Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Etna Gmbh filed Critical Etna Gmbh
Publication of WO2021219347A1 publication Critical patent/WO2021219347A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A41D13/1115—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a horizontal pleated pocket
    • 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 protection with a mask for simultaneously covering the mouth and nose of a person, the mask consisting of a blank of a flat filter medium.
  • a mask is a face covering that partially or completely covers a person's face.
  • face half masks are used, especially in the medical and nursing fields, which consist of one or more layers of paper or fleece that can be attached to the back of the head or behind the ears with straps or rubber bands. Since the mask covers the mouth and nose at the same time, these half masks are also known as mouth and nose protection.
  • Mouth and nose guards are divided into different type classes depending on the filter performance, and the higher the filter performance, the greater the breathing resistance typically also becomes. Particularly high requirements are placed on those embodiments which are to meet the standards for respiratory masks (FFP-1, FFP-2, FFP-3 or BFE 98).
  • a particular challenge is the highly variable facial anatomy of the various users of mouth-nose protection.
  • a mouth-nose protector Protection that can adapt well to a wide variety of facial anatomies so that the mouth and nose protection fits tightly to the face on all sides. This is important to prevent unfiltered air from flowing in or out at the edges of the mouth and nose protection.
  • mouth and nose protection that delivers the highest possible filter performance with the lowest possible breathing resistance.
  • a mouth and nose protection with a mask for simultaneously covering the mouth and nose of a person 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 The lower edge of the mask is folded horizontally in a zigzag fashion and forms at least 5 folds, each of which has a fold back lying on the outside of the mask and two fold flanks starting from the fold back, the height of the fold flanks both from the upper edge of the mask and decreases from the bottom of the mask to the center of the mask.
  • the mouth and nose protection according to the invention adapts itself optimally to the respective anatomy of the face when it is worn and ensures that the mouth and nose protection can be flush on all sides.
  • the zigzag folds of the mask are 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 protection.
  • the terms above and below refer here to the situation when wearing the mouth and nose protection, with the upper edge running over the nose and the lower 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 points towards the face when the mouth and nose protection is worn.
  • the outside of the mask is the side that faces out when wearing the mouth and nose protection. If you count the back of the folds from the top and bottom of the mask to the middle, then - depending on how the zigzag fold is aligned - the odd-numbered backs of the folds point inwards, i.e. towards the face, and all even-numbered backs of the folds point outwards , or the other way around.
  • 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 fold backs on the inner mask and the number of fold backs on the outer mask side are taken together, a total of at least 9 fold backs per inventive mouth and nose protection results.
  • 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, the height of the fold flanks both from the upper edge of the mask and from the lower edge of the Mask decreases towards the center of the mask.
  • the folded blank forms 6 to 10 such folds.
  • the folded blank forms 7 to 9 of such folds.
  • 9 folds are provided with the fold back lying on the outside of the mask.
  • 7 folds are provided with the fold back 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 fold backs on the outer mask side is 1 greater than the number of fold backs on the inner mask side.
  • the number of folds counted from the lower edge of the mask to the center is 1 greater than the number of folds counted from the upper edge of the mask to the center.
  • the number of folds with the back of the folds pointing outwards, counted from the top edge of the mask to the center is 4 and the number of folds counted from the lower edge of the mask to the center 5.
  • 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 respective preceding 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 smaller height than the fold flanks of the fold, whereby the folds form several successive isosceles triangles, in which the height of the legs of the same length decreases inwards from both the top and bottom.
  • the height of all folds decreases starting from the upper and / or lower edge towards the center.
  • the first two folds on the upper and / or lower edge are of the same size and only the height of all the folds following in the direction of the center of the mask gradually decreases.
  • the filter medium, from which the cut 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 as meaning that it is a structure made of fibers that are not systematically crossed or intertwined, as is the case with weaving, knitting, knitting or braiding.
  • the nonwovens used according to the invention are flexible and foldable, whereby foldable in this context means that stable fold backs are formed during folding which do not spontaneously unfold again without mechanical action.
  • the thickness of the fleece layer (s) is preferably selected to be as small as possible in order to save material, to keep breathing resistance low and to enable a multi-layer structure.
  • the thickness of the nonwoven 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 height from the first fold flank to the second fold flank can be in the range from 8 to 10%
  • the decrease from the second fold flank to the third fold flank in the range from 18 to 24%
  • the decrease from the third fold flank to the fourth fold flank in the area 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 in the range from 17 to 19 mm
  • the height of the third Fold flank in the range from 13 to 15 mm
  • the height of the fourth fold flank in the range from 9 to 11 mm.
  • the two fold flanks of a first fold have the same height
  • the two fold flanks of the following fold have a smaller height than the fold flanks of the first fold, whereby the folds form several successive isosceles triangles
  • the percentage values given above relate to the decrease in the height of the legs of the same length of a fold relative to the height of the legs of the same length of the previous fold.
  • the decrease in the height of the legs of the same length of one of the folds in relation to the height of the legs of the same length of the previous fold is 8 to 32% less.
  • the value of the percentage decrease can increase from the edges towards the center.
  • the decrease in the height of the legs of the same length of a second fold based on the height of the legs of the same length of a first fold is in the range of 8 to 10%
  • the decrease in the height of the legs of the same length of the fourth fold based on the height of the legs of the same length of the third fold in the range of 25 to 32%.
  • an adhesive, seam or ultrasonic welding is provided on the vertically running lateral edges of the mask.
  • the folded filter medium of the mask thus remains at the side edges gathered, while the fold in the area between the lateral edges can be spread open in order to adapt the mask to the physiognomy of the face of the user.
  • a flexible nosepiece is arranged on the upper horizontal edge of the mask, which can for example consist of a dimensionally stable, flexible plastic or metal.
  • the nosepiece is preferably guided on the upper edge of the mask in a horizontally running tunnel, which is formed by sewing, gluing or welding the outer edge of the uppermost fold flank to the fold flank following in the direction of the center of the mask.
  • a nose pad is arranged on the upper horizontal edge of the mask, which nose pad can consist of a foam, for example.
  • the nose pad is preferably sewn, glued or welded to the mask on the outermost fold flank.
  • a rubber or a band for attaching the mouth and nose protection 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 tape or rubber on the upper edge of the mask is preferably sewn, glued or welded to the side edges of the mask.
  • the tape or rubber at the lower edge of the mask is preferably passed through a horizontally running tunnel, which is formed by sewing, gluing or welding the outer edge of the lowermost fold flank to the fold flank following in the direction of the center of the mask.
  • a stiffening strip is provided in the center of the mask.
  • the stiffening strip can be sewn on, glued on, sprayed on, welded to the filter medium of the mask or inserted into a pocket or tunnel that is formed by the fold.
  • the stiffening strip is used to reinforce the middle area of the mask so that it does not come too close to the face, especially when inhaling.
  • the stiffening strip extends horizontally from the mask center in both directions to the side 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 both on the inside and on the outside of the mask, wherein the type of attachment of the reinforcement strip on the inside can differ from the type of attachment of the reinforcement strip on the outside.
  • stiffening material preferably a plastic material
  • stiffening material is sprayed onto the area of the mask to be stiffened in a layer thickness in the range from 0.1 to 1.0 mm.
  • 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 preferably has a higher rigidity than the material of the filter medium of the mask due to its material nature or due to its greater material thickness.
  • the middle two folds are of the same size and the backs of the folds are sewn, glued or welded to the fold flanks of the respective outwardly following folds. If the two innermost folds are then opened outwards, a pocket is formed in which a stiffening strip can be inserted. This pocket can then be closed by sewing, welding or gluing, so that the stiffening strip is held in it permanently.
  • the stiffening strip is preferably made of plastic, such as polypropylene, polyethylene and polytetrafluoroethylene, or metal.
  • the mouth and nose protection according to the invention meets the standards according to FFP-1, FFP-2, FFP-3 or BFE 98.
  • the present invention also encompasses a method for producing a mouth and nose protection of the type described above, wherein in the 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 having a fold back lying on the outside of the mask and two fold flanks each starting from the fold back, the height of the fold flanks both from the upper edge of the later mask and from its lower edge to the center of the mask decreases towards.
  • Figure 1 a schematic representation of a plan view of a certain embodiment of a mouth and nose protection according to the invention in the unfolded state
  • FIG. 3 a schematic representation of a cross section through a certain one
  • FIG. 5 a schematic representation of a cross section through the mask of a
  • Embodiment in which a reinforcing strip is provided in a central gusset pocket.
  • a specific embodiment of a mouth and nose protection 1 according to the invention is shown very schematically, which has a multiple horizontally folded mask made of a filter medium.
  • a fold flank 4 extends between two fold backs 3, 3 ' Height is defined by the distance between the fold back 3 on the one hand and the fold back 3 'on the other side. The height of the fold flanks decreases both from the upper edge 6 of the mask and from the lower edge 10 of the mask towards the center 5 of the mask.
  • a nasal clip 7 is arranged on the upper edge 6 of the mask, and elastic bands 8, 9 are provided both on the upper edge 6 and on the lower edge 10 of the mask for fastening the mouth and nose protection 1 to the head.
  • the embodiment shown in FIG. 1 has a stiffening strip 14 in the center 5 of the mask. This serves to reinforce the middle area of the mask so that it does not come too close to the face, especially when inhaling.
  • the stiffening strip 14 extends along the back of the folds in the center of the mask 5 in both directions to the lateral edges over almost the entire width of the mask in the horizontal direction.
  • FIG. 2 is a schematic representation of a plan view of the mask 2 of the embodiment of the mouth and nose protection 1 from FIG. 1 without a nose clip and rubber bands.
  • FIG. 1 A cross section through a further embodiment of a mask 2 is shown schematically in FIG.
  • 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 fold backs 3 on the outside of the mask 2.
  • Fold ridges 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 onto the outside of the mask on the fold flanks that meet 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 too close to the face surface, in particular when inhaling.
  • the stiffening strip 14 extends from the mask center 5 in both directions to the lateral edges over almost the entire mask width in the horizontal direction.
  • FIG. 4 is a schematic representation of a cross-section through the mask of the embodiment of FIG. 3 without the nose clip, nose pad, reinforcement strips and rubber bands.
  • the two fold flanks 4, 4 'that meet in the first fold on the fold back 3 on the outside have the same height, and the two fold edges that come together on the fold back of the following fold on the Outside meeting, compared to the fold flanks of the first fold 3 have a smaller height, whereby several successive isosceles triangles are formed, in which the height of the legs of the same length decreases inwards from both the upper and lower edge.
  • 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 for fastening the mask can be pulled through on the head.
  • the first fold back 3 'on the inside of the mask with the upper edge 6 can also be sewn, welded or glued (see arrow) on the other side so that the two fold flanks of the first fold form a tunnel into which the Nose clip can be incorporated and / or through which a rubber 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 fold as the embodiment of FIG. 4. However, the further processing differs here.
  • 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 backs of the folds of the two innermost folds are here connected or glued to the fold flanks of the respective outwardly following folds via a seam 16. If the two innermost folds are then opened outwards, a pocket 13 is formed into which a stiffening strip 14 can be inserted.
  • the pocket 13 can then be closed by sewing, welding or gluing, so that the stiffening strip 14 is held therein permanently.

Landscapes

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

Abstract

La présente invention concerne une protection pour la bouche et le nez (1) comprenant un masque (2) pour recouvrir simultanément la bouche et le nez d'un individu, le masque (2) étant constitué d'une découpe d'un milieu filtrant plat. Selon l'invention, la découpe est pliée horizontalement en zigzag entre le bord supérieur du masque et le bord inférieur du masque et forme au moins 5 plis, chaque pli ayant un dos (3) reposant sur l'extérieur du masque (2) et deux flancs de plis (4, 4') s'étendant vers le bas à partir du dos (3), et la hauteur des flancs de plis (4, 4') diminuant vers le centre (5) du masque (2) à la fois à partir du bord supérieur (6) du masque (2) et à partir du bord inférieur (10) du masque (2).
PCT/EP2021/059336 2020-04-30 2021-04-09 Protection de la bouche et du nez WO2021219347A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202020102424.8U DE202020102424U1 (de) 2020-04-30 2020-04-30 Mund-Nase-Schutz
DE202020102424.8 2020-04-30
EP20195347.8A EP3903612B1 (fr) 2020-04-30 2020-09-09 Protection de la bouche et du nez
EP20195347.8 2020-09-09

Publications (1)

Publication Number Publication Date
WO2021219347A1 true WO2021219347A1 (fr) 2021-11-04

Family

ID=70859235

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/059336 WO2021219347A1 (fr) 2020-04-30 2021-04-09 Protection de la bouche et du nez

Country Status (3)

Country Link
EP (1) EP3903612B1 (fr)
DE (1) DE202020102424U1 (fr)
WO (1) WO2021219347A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220235503A1 (en) * 2021-01-28 2022-07-28 Aviram F Industries Ltd. Apparatus and method for manufacturing masks

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
EP3903612C0 (fr) 2023-06-07
DE202020102424U1 (de) 2020-05-08
EP3903612B1 (fr) 2023-06-07
EP3903612A1 (fr) 2021-11-03

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