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WO2021213934A1 - Masque couvrant le nez et la bouche et partie principale pour celui-ci - Google Patents

Masque couvrant le nez et la bouche et partie principale pour celui-ci Download PDF

Info

Publication number
WO2021213934A1
WO2021213934A1 PCT/EP2021/059971 EP2021059971W WO2021213934A1 WO 2021213934 A1 WO2021213934 A1 WO 2021213934A1 EP 2021059971 W EP2021059971 W EP 2021059971W WO 2021213934 A1 WO2021213934 A1 WO 2021213934A1
Authority
WO
WIPO (PCT)
Prior art keywords
base body
face
opening
user
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2021/059971
Other languages
German (de)
English (en)
Inventor
Markus Mezger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2021213934A1 publication Critical patent/WO2021213934A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks
    • A62B18/025—Halfmasks
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators

Definitions

  • the invention relates to a base body for an oral nose mask according to the preamble of claim 1 and an oral nose mask comprising such a base body and a filter element.
  • a respirator half-mask with a half-mask body is known in which several small holes are provided for the passage of air. Before it passes through the holes, the air is filtered through a filter part resting on the half-mask body. Despite the large number of holes, the effective air passage area is small. Breathing in is particularly difficult as a result. The manufacture of such a perforated half mask is complex, time-consuming and costly.
  • the invention is based on the object of developing a generic base body for an oral and nose mask in such a way that it is easy to manufacture and, when used with a filter element as an oral and nose mask, enables easy inhalation and exhalation. This object is achieved by a base body for an oral nose mask with the features of claim 1.
  • Another object of the invention is to provide a mouth and nose mask comprising a base body according to the invention and a filter element which is easy to manufacture and enables easy inhalation and exhalation.
  • the invention provides that the base body has at least one depression on its outside.
  • the base body is designed so that when the filter element is fastened to the base body and when the base body rests on the face of a user, air can be drawn in by the user through the filter element into the recess and from the recess to the face opening of the base body.
  • the recess can be a trough in the outside of the base body.
  • the recess is formed by a region of the base body which is set back with respect to a single projection or also with respect to several projections of the base body.
  • Such a recess in the outside of the main body makes it easier to breathe in when the filter elements are attached to the main body when they come into contact with the face of the user.
  • the filter element When inhaling, the filter element is sucked against the outside of the base body. As a result, the area of the filter element through which air can pass and penetrate to the face opening of the base body is large.
  • the invention is based on the knowledge that the filter surface through which air can be sucked in can be enlarged by a recess on the outside of the base body. There is no need to make a through opening in the base body for this. This he enables a much simpler production of the base body for the mouth and nose mask. There is no need for a punching process with which holes would otherwise have to be made in the base body after the formation of the base body. Due to the possibility of dispensing with the subsequent introduction of holes, the mask according to the invention also has greater strength.
  • the effective filter surface through which air can be sucked in is larger. Due to the recess on the outside of the base body, air on the outside of the base body can be collected in the recess, so to speak, and can be conducted via the recess to the inside of the base body.
  • the recess in the outside of the base body has a bottom which separates the outside of the base body from the inside of the base body.
  • the base body is expediently free of through openings in the region of the recess which extend from its outside to its inside.
  • the face opening and the filter opening are expediently connected to one another by a wall running around the central axis.
  • the at least one recess is advantageously arranged in the wall.
  • the base body has an end face facing away from the face opening.
  • the recess extends to the end face of the base body. This ensures in a simple manner that air can flow through the recess over the end face from the outside of the base body to the inside of the base body.
  • the recess advantageously extends in the end face of the base body in such a way that air can flow in the recess from the outside of the base body through the filter opening to the inside of the base body.
  • the base body has at least one projection which protrudes in the direction away from the face opening over an end face on the end face of the base body.
  • the protrusion is also known as an elevation.
  • the recess on the end face can be formed by such a single projection or a plurality of projections. In this case, the recess extends in the end face which is set back with respect to the projection. Anything that adjoins the projection and is set back in the direction away from the face opening with respect to the projection can be referred to as a depression.
  • the base body has at least two projections. In particular, the recess is also arranged at least between the two projections.
  • the depression is located both on a peripheral side of the wall and on the face of the Wall extends.
  • the recess can be formed in the circumferential side by a depression and in the front side between the two projections. In this case, these two sections of the depression are designed in such a way that an uninterrupted flow of air from the trough to the area between the two projections is possible.
  • the wall of the base body is completely closed.
  • the filter opening and the face opening are expediently the only openings in the base body through which air can be sucked in by the user when it is in close contact with the face of the user. This enables a particularly simple production of the base body.
  • the filter opening can be designed to be particularly large, so that a large amount of air can be sucked in.
  • the facial area of the base body is bent over with respect to the wall.
  • Such a bend of the face contact area can also be referred to as a flanging.
  • the bend of the face contact area with respect to the wall ensures a tight and comfortable installation of the main body on the face of the user.
  • the bend of the face contact area runs around the imaginary central axis in a closed manner.
  • the base body has at least one fastening element for the filter element.
  • the fastening element extends transversely to the central axis.
  • the filter element can be attached to the base body in a form-fitting manner.
  • the fastening element forms an undercut.
  • the filter element can be attached to this undercut. This can be done, for example, by means of a rubber ring.
  • the fastening force for fastening the filter element runs transversely to forces that act on the filter element during inhalation and exhalation. This allows the filter element to be attached to the base body in a manner that is gentle on the material.
  • the base body advantageously has at least one holding wing.
  • the holding wing is designed such that a fastening band for fastening the base body to the face of the user can be fastened to the holding wing.
  • the holding wing expediently has a hole. In particular, the hole is connected to an edge of the mounting wing via a slot.
  • the fastening tape can be inserted into the hole in a simple manner via the slot. It is not necessary to thread the fastening tape through the hole.
  • the width of the slot is advantageously smaller than the diameter of the hole.
  • the width of the slot can advantageously be temporarily extended due to the flexibility of the mounting wing.
  • the retaining wing is expediently so flexible that it can adapt to the contour of the face when it rests on the face of the user.
  • the rigidity of the holding wing is smaller than the rigidity of the base body in the area between the face opening and the filter opening. It can thereby be ensured that the base body has sufficient strength in the area between the face opening and the filter opening and at the same time has the required flexibility in the area of the retaining wing.
  • the base body is advantageously designed in such a way that the recess effects a stiffening of the base body in the region of the recess. As a result, the wall thickness of the base body in the region of the recess can be thin, and the base body nevertheless has sufficient strength. This saves material costs and enables a simple production of the base body.
  • the base body expediently consists of a thermoplastic synthetic material.
  • the main body is made in a deep-drawing process. This enables simple and inexpensive production of the base body.
  • the mouth and nose mask according to the invention comprises a base body according to the invention and a filter element.
  • the filter element is attached to the base body in an exchangeable manner. As a result, after the filter element has been clogged, the entire mouth and nose mask does not have to be replaced. All you have to do is change the filter element.
  • the main body can be used multiple times. This reduces the costs for the user of the mouth and nose mask and enables an ecologically advantageous use of the mouth and nose mask.
  • the mouth and nose mask expediently comprises a rubber ring.
  • the rubber ring can be an O-ring, for example.
  • the filter opening has an opening area.
  • the effective filter area is the area of the filter element through which, when the filter element is in contact with the base body, when the base body is in contact with the face of the user while the user is sucking in air, air can be sucked in through the base body.
  • the effective filter area is expediently larger than the opening area. This results in a favorable suction pressure. Due to the large effective filter area, a lower pressure and thus also a lower suction force is required.
  • a channel is formed between the filter element and the recess, which leads air to the face opening of the base body.
  • the channel is circumferentially closed by the filter element and the recess in the base body.
  • the channel is circumferentially in the radial direction Direction away from the central axis permeable to air. Air can advantageously enter the channel through the filter element.
  • the present invention relates to a half mask, in particular a particle filtering respirator for the protection of aerosols and particles, the curved mask body of which is made from a thermoformable film and in which a single or multi-layer filter layer is integrated, the mask body with one or more brackets on Head of the wearer can be fixed and is pressed against the facial contour of the wearer.
  • the present invention is based on the object of creating a half mask, the mask body of which is extremely light, has a high degree of rigidity, consists of a cleanable, sterilizable, air-impermeable material and has an ergonomic fit.
  • the single or multi-layer filter fabric must be firmly connected to the mask body.
  • the field of application of this mask is primarily conceivable for use in hospitals, care facilities and similar areas.
  • the mask base body is advantageously deep-drawn from a thermoformable material.
  • the geometry of the mask body is designed in such a way that it rests tightly against the contour of the face via the mounts attached to the wearer's head. A circumferential beading gives the mask body an additional fit and rigidity with an enlargement of the sealing surface, which leads to the desired tightness.
  • the mask body also contains a recess into which the filter fabric is integrated.
  • a single or multi-layer filter fabric can be glued, sealed or clipped into the recess of the mask body.
  • the mask body has two mounting brackets on the side with cutouts for attaching the headbands, the cutouts used to adjust the length of the headbands.
  • the present invention relates to a half mask, in particular a particle filtering respirator for the protection of aerosols and particles, the curved mask body of which is made from a thermoformable film and in which a single or multi-layer filter layer is integrated, the mask body with one or more brackets on The head of the wearer can be fixed and is pressed against the facial contour of the wearer. A filter layer is pulled over the mask body and held in a groove in the mask body with a rubber ring.
  • the present invention is based on the object of creating a half mask, the mask body of which is extremely light, has a high degree of rigidity, consists of a cleanable, sterilizable, air-impermeable material and has an ergonomic fit. Furthermore, to enlarge the filter surface to such an extent that breathing in and out does not lead to shortness of breath when wearing the half mask over a longer period of time. For this purpose, the single or multi-layer filter fabric must be pulled over the mask body and attached. The field of application of this mask is primarily conceivable for use in hospitals, care facilities and similar areas.
  • the mask body is deep-drawn from a thermoformable material.
  • the geometry of the mask body is designed so that the filter is drawn over the outside of the mask body.
  • the filter can be pulled tight or with folds over the outer contour.
  • the filter is fixed with a circumferential rubber ring.
  • the mask body has recesses and recesses on the face that allow the filter to be used in its entire surface when breathing in and out. If the filter is not pulled tightly onto the mask and wrinkles appear in the filter surface when the filter is pulled on, then the filter surface can enlarge by the folded portion when you exhale.
  • a rubber ring fixes and seals the filter with the mask.
  • FIG. 1 a perspective illustration of an mouth and nose mask
  • FIG. 2 shows a plan view of the mouth and nose mask from FIG. 1 in the direction of the
  • FIG. 6 shows a perspective illustration of a base body of the oral and nose mask from FIG. 1;
  • FIG. 7 shows a plan view of the base body from FIG. 6 in the direction of arrow VII from FIG.
  • FIG. 8 to 10 are side views of the base body from FIG. 6,
  • FIG. 11 shows a perspective illustration of a half mask when it rests on the face of a user
  • FIG. 12 shows a perspective illustration of the half mask from FIG. 11, 13 shows a perspective illustration of the half mask from FIG. 12 with a view of an inside of the half mask and
  • FIG. 12 shows a perspective illustration of the half mask from FIG. 11, 13 shows a perspective illustration of the half mask from FIG. 12 with a view of an inside of the half mask and
  • Fig. 1 shows a mouth and nose mask 40.
  • the mouth and nose mask 40 is also referred to as a half mask.
  • the mouth and nose mask 40 is a protective breathing mask.
  • the mouth and nose mask 40 is used to cover the mouth and nose.
  • the mouth and nose mask 40 is used to filter the breathable air.
  • the mouth and nose mask 40 comprises at least one main body 1 and a filter element 30.
  • the filter element 30 is a fleece.
  • the fleece of the filter element 30 is formed aerodynamically.
  • the filter element 30 is a so-called meltblown fleece. Such nonwovens are also referred to as meltblown nonwovens.
  • the filter element 30 is used to filter the breathing air.
  • the filter element 30 is attached to the base body 1 in an exchangeable manner.
  • a rubber ring 41 is provided for fastening the filter element 30.
  • the rubber ring 41 is elastic.
  • the rubber ring 41 is an O-ring in the exemplary embodiment.
  • the base body 1 has a holding wing 12.
  • two retaining wings 12 are provided.
  • a fastening strap 13 is fastened to the holding wing 12.
  • the base body 1 can be fastened to an ear of the user by means of the fastening strap 13.
  • the base body 1 has a nasal cavity 20.
  • the nasal cavity 20 serves to accommodate the nose of a user.
  • a nasal pad 21 shown in FIG. 1 is arranged on the nasal cavity 20.
  • FIGS. 3 to 5 show different side views of the mouth and nose mask 40.
  • the base body 1 forms a support body for the filter element 40.
  • the base body 1 consists of a thermoplastic material.
  • the base body 1 is made of a different material.
  • the base body 1 is made to drive in a Tiefziehver.
  • the material of the base body 1 is impermeable to air.
  • the base body 1 comprises the holding wings 12.
  • the holding wings 12 are arranged on a base body 22 of the base body 1.
  • the holding wings 12 are designed to be more flexible than the base body 22.
  • the holding wings 12 have a first wall thickness wl.
  • the first wall thickness w1 is the maximum wall thickness of the retaining wing 12.
  • the base body 1 has a second wall thickness w2 in the region of the end face 19.
  • the first wall thickness w1 is approximately the same as the second wall thickness w2.
  • the wall thickness of the base body 1 in the area between the face opening 3 and the filter opening 4 is in the execution example smaller than the wall thicknesses wl and w2. Due to the structure of the base body 1, the rigidity of the base body 1 in the area between the face opening 3 and the filter opening 4 is greater than the rigidity of the mounting wing 12.
  • the recess 6 increases the rigidity of the base body 1 in the area between the face opening 3 and the filter opening 4.
  • the first wall thickness wl is 300 ⁇ m to 500 ⁇ m, in particular 350 ⁇ m to 450 ⁇ m.
  • the second wall thickness w2 is 300 ⁇ m to 500 ⁇ m, preferably 350 ⁇ m to 450 ⁇ m.
  • the wall thickness of the base body 1 in the exemplary embodiment is 150 ⁇ m to 350 ⁇ m, in particular 200 ⁇ m to 300 ⁇ m.
  • a basic shape is first produced in a pre-stretching process during the production of the base body 1.
  • the material of a plastic film is conveyed from the edge of the plastic film to the center and at the same time produced a bulge in the center.
  • a deep-drawing process for producing the base body 1 is carried out.
  • the manufacture of the base body 1 takes place exclusively by means of thermoforming processes.
  • a flat plastic film is processed which, prior to the pre-stretching process, has an essentially constant thickness of 400 ⁇ m to 600 ⁇ m, in particular from 450 ⁇ m to 550 ⁇ m, preferably from 475 ⁇ m to 525 ⁇ m.
  • the base body 22 Due to the wall thicknesses of the support wings 12 and the base body 22 and the structure of the base body 22, the base body 22 has the necessary stability to support the filter element 30, and at the same time the support wings 12 are flexible enough for a suitable contact on the face of a user.
  • the holding wing 12 is so flexible that it can adapt to the contour of the face when it rests on the face of the user.
  • the base body 22 rests against the face of the user with a face contact area 2.
  • the face contact area 2 is also shown in FIG. 8, for example. When the main body 1 rests on the face of the user, the face contact area 2 encloses a face opening 3 of the main body 1 facing the user. This is also shown by the synopsis of FIGS. 6 to 10.
  • the base body 1 is designed in such a way that the nostrils and mouth of a user are arranged in the face opening 3 of the base body 1 when they come into contact with the face of the user.
  • the base body 1 has a filter opening 4.
  • the filter opening 4 is provided for covering by the filter element 30. Air can be inhaled and exhaled through the filter opening 4 in order for the base body 1 to rest against the face of a user.
  • the filter opening 4 is the only opening of the base body 22 apart from the face opening 3.
  • the filter opening 4 is arranged opposite the face opening 3, as shown in FIGS. 6 and 8, for example.
  • a common imaginary central axis 50 runs through the face opening 3 and the filter opening 4.
  • the central axis 50 penetrates both the Face opening 3 and the filter opening 4.
  • the central axis 50 runs in the direction of the air flow from the face opening 3 to the filter opening 4 and vice versa.
  • the face contact area 2 runs completely around the central axis 50.
  • One edge of the filter opening 4 runs completely around the central axis 50.
  • the face contact area 2 lies in a plane which is oriented perpendicular to the central axis 50.
  • the edge of the filter opening 4 runs in a plane which is oriented perpendicular to the central axis 50.
  • the face opening 3 and the filter opening 4 are arranged in the direction of the central axis 50 at a distance from one another.
  • the face opening 3 and the filter opening 4 are connected to one another by a wall 8.
  • the wall 8 revolves around the central axis 50 in a closed manner.
  • the wall 8 is free of openings.
  • the wall 8 essentially has the shape of an oval tube.
  • the base body 1 is designed in such a way that the filter element 30 can be fastened to it.
  • the base body 1 expediently has at least one fastening element 11 for the filter element 30.
  • the base body 1 has five fastening elements 11 for the filter element 30.
  • the fastening element 11 extends transversely to the central axis 50.
  • the fastening element 11 forms an undercut with respect to the direction of the central axis 50.
  • the fastening element 11 projects in relation to a base surface 23 of the wall 8 in the direction transverse to the central axis 50.
  • a projection in the wall 8 is formed by the fastening element 11.
  • the fastening element 11 is formed by a recess in the wall 8.
  • the fastening element 11 prevents movement of the rubber ring 41 in the direction of the central axis 50 in the direction away from the face opening 3.
  • the rubber ring 41 causes a force in the direction of the central axis 50, which acts on the filter element 30.
  • a force acts on the filter element 30 in the direction of the central axis 50.
  • the holding force exerted by the rubber ring 41 on the filter element 30 acts perpendicular to the stress on the filter element 30 caused by the force exhaling and inhaling.
  • the wall 8 has a groove 24. This is shown in FIGS. 8 and 9.
  • the groove 24 is arranged between tween the fastening element 11 and the face contact area 2.
  • the groove 24 serves to receive the rubber ring 41.
  • the groove 24 runs completely around the central axis 50. Looking at FIGS. 5 and 6 together, for example, shows that the filter element 30 is slipped over part of the base body 1.
  • the filter element 30 is pressed into the undercut of the fastening element 11 by means of the rubber ring 41.
  • the filter element 30 covers the filter opening 4 of the base body 1.
  • 7 shows the size of the opening area F1 of the filter opening 4. In a state spread out in one plane, the filter element 30 has a total area.
  • the total area of the filter element 30 is larger than the opening area F1 of the filter opening 4.
  • the filter element 30 is attached to the base body 1 (FIGS. 1 to 5) so that the filter element 30 can inflate when the user exhales.
  • the filter element 30 has in the unused state of the mouth and nose mask 40 in the state attached to the base body 1 on folds. The folds form a reserve of material for expanding the filter element 30.
  • the base body 1 has an outer side 5.
  • the outside 5 is outside when the base body 1 is in contact with the face of the user.
  • the outside 5 is provided at least partially for the filter element 30 to rest on the base body 1.
  • the base body 1 has an inside 15. In contrast to the outside 5 of the base body 1, the filter element 30 does not lie against the inside 15.
  • the inside 15 is free from the contact of the filter element 30.
  • the outside 5 includes the area of the base body 1 on which the filter element 30 rests, in particular during inhalation.
  • the filter opening 4 separates the outside 5 from the inside 15.
  • the base body 1 has at least one recess 6 on its outside 5. As shown in FIG. 7, the base body 1 has a total of 20 depressions 6 in the exemplary embodiment.
  • the recess 6 is opposite to the base surface 23 of the base body 1 back.
  • the base body 1 is designed so that when the filter element 30 is attached to the base body 1 and when it rests on the user's face, air can be sucked in through the filter element 30 into the recess 6 and from the recess 6 to the face opening 3 by the user.
  • This flow profile 25 of the sucked-in air is identified in FIG. 6 with the reference symbol 25.
  • the flow path 25 is shown with a solid line.
  • the flow course 25 is shown with a dashed line.
  • the recess 6 is a trough in the wall 8.
  • the wall 8 has a projection and that the recess is formed by the part of the wall which is set back from the projection.
  • the recess 6 is elongated.
  • the recess 6 extends at least partially in the direction of the central axis 50.
  • the recess 6 is in particular a groove.
  • the recess 6 preferably has the shape of a channel, at least in sections.
  • the base body 1 has an end face 9 facing away from the face opening 3.
  • the end face 9 comprises an end face 19 and at least one projection 10.
  • the end face 9 is formed by the wall 8.
  • the projection 10 projects in the direction of the central axis 50 in the direction away from the face opening 3 over the end face 19.
  • the projection 10 is an elevation.
  • the recess 6 in the wall 8 of the base body 1 extends to the end face 9 of the base body.
  • the recess 6 extends at least between the fastening element 11 and the end face 9.
  • the recess 6 connects the outside 5 of the base body 1 with the inside 15 of the base body 1.
  • the recess 6 is formed between two adjacent projections 10 from.
  • the recess 6 extends in the end face 9 of the base body 1 that in the recess 6 air can flow from the outside 5 of the base body 1 through the filter opening 4 to the inside 15 of the base body 1. In this way, when the main body 1 rests on the face of the user when air is sucked in by the user, a channel is formed between the filter element 30 and the recess 6 which guides air to the face opening 3 of the main body 1.
  • the air follows the flow path 25 when it is sucked in.
  • the flow path 25 runs at least partially through the channel formed between the filter element 30 and the recess 6.
  • the air is sucked in through this channel.
  • the channel formed in this way is permeable to air in the direction transverse to the central axis 50 in the direction away from the base body 1.
  • air can enter the channel through the filter element 30 at any point in the recess 6 in the direction of the central axis 50.
  • the recess 6 enables air to be sucked in from a larger area of the filter element 30 compared to the situation when no recess 6 is provided.
  • the filter opening 4 has the opening area Fl shown in FIG. 7. Without the depressions 6, when air is sucked in, air could only be sucked in through the filter element 30 via the opening area F1.
  • the recess 6 allows air to be sucked in through an effective filter surface of the filter element 30 which is larger than the opening surface F1 when air is sucked in by the user.
  • the effective filter surface of the filter element 30 is the surface of the filter element 30 through which air can flow through the filter element 30 to the inside 5 of the base 1 when the base body 1 is in contact with the face of the user and when air is sucked in by the user.
  • the effective filter surface of the filter element 30 is the surface of the filter element 30 which does not lie against the base body 1 when the base body 1 is in contact with the face of the user and when air is sucked in by the user.
  • the recess 6 in the outside 5 of the base body 1 has a bottom 7.
  • the base 7 separates the outside 5 of the base body 1 from the inside 15 of the base body 1.
  • the recess 6 and the material and design of the filter element 6 are coordinated with one another in such a way that when air is sucked in by the user, the filter element 6 does not come into contact with the bottom 7 of the recess 6.
  • the recess 6 has a corresponding width. The width of the recess 6 is selected such that it is impossible for the filter element 30 to rest on the bottom of the recess 6 by the user generating a negative pressure.
  • the recess is free of through openings which connect the outside 5 and the inside 15 of the base body 1 to one another.
  • the wall 8 is completely closed.
  • the filter opening 4 and the face opening 3 are the only openings in the base body 1 through which air can be drawn in by the user when the base body 1 is in close contact with the face of the user.
  • the air finally passes through the filter opening 4 from the outside 5 of the base body 1 to the inside 15 of the base body 1.
  • On the inside of the base body 1 the air is drawn in to the face opening 3 of the base body 1 by the user and in the face opening 3 by the user inhaled.
  • the material of the base body 1 is impermeable to air.
  • the arrangement of the filter element 30 on the base body 1 ensures that the user can only breathe air that has been filtered through the filter element 30.
  • the filter element 30 is pressed tightly against the base body 1 via the rubber ring 41 (FIGS. 3 to 5).
  • the rubber ring 41 prevents air from reaching the inside 15 of the base body 1 between the filter element 30 and the base body 1.
  • the exhalation of the user is also facilitated when the mouth and nose mask 40 is attached.
  • the exhaled air hits a larger effective filter area of the filter element 30. This makes it easier for the filter element 30 to expand.
  • the detachment of the filter element 30 from the area of the base body 1 between the fastening element 11 and the end face 9 is also facilitated by the recess 6.
  • the filter element 30 rests through the recess 6 on a smaller area on the base body 1. As a result, the filter element 30 adheres to the base body 1 in a smaller surface area. This facilitates detachment of the filter element 30 from the base body 1 when the user exhales.
  • the base body 1 is designed in such a way that the recess 6 shown in FIG. 6 causes the base body 1 to be stiffened in the region of the recess 6.
  • the base body 22 of the base body 1 is stiffened by the recess 6.
  • the recess 6 is a bead.
  • the recess 6 brings about both an improved possibility of air absorption and an improved strength of the base body 1.
  • the face contact area 2 of the base body 1 is bent over with respect to the wall 8.
  • the face contact area 2 is formed by a flange 18.
  • the face support area 2 is bent over against the wall 8 by at least 100 °, in particular by at least 140 °, in the exemplary embodiment by at least 160 °. Due to the bead 18, the base body 22 rests with a flat inside on the face of the user. This makes it very comfortable to wear.
  • the flange 18 enables a tight fit of the base body 1 on the
  • the face opening 3 lies between the flange 18 and the wall 8.
  • the face opening 3 separates the wall 8 from the flange 18.
  • the base body 22 comprises the wall 8 and the flange 18. As shown in FIG. 6, is in the region of the flange 18 of the retaining wings 12 are fixed on the wall 8.
  • the mounting wing 12 is designed in such a way that the fastening band 13 for fastening the base body 1 to the face of the user can be fastened to the mounting wing 12.
  • the holding wing 12 has a first hole 14.
  • the first hole 14 penetrates the mounting hill 12 completely in the direction of the central axis 50.
  • the first hole 14 is about a Slot 16 is connected to an edge 17 of the mounting wing 12.
  • the width of the slot 16 is smaller than the diameter of the first hole 14.
  • the width of the slot 16 can be changed temporarily due to the flexibility of the mounting wing 12.
  • the distance between the edges of the slot 16 can be increased by moving the edges in opposite directions to one another in a direction transverse to the width of the slot 16.
  • the fastening tape 13 can be inserted into the first hole 14 via the slot 16.
  • a threading of the fastening tape 13 through the hole 16 is not neces sary.
  • the edges of the slot 16 are released and return to their original position. The distance between the two edges of the slot 16 is then minimal again. Removal of the fastening tape 13 via the slot 16 is then only possible by bending the slot 16 open again. In this way, for example, a fastening tape
  • the retaining wing 12 has a second hole 34 shown in FIG. 6.
  • the second hole 34 penetrates the mounting wing 12 completely in the direction of the central axis 50.
  • the second hole 34 has no connection to the edge 17 of the mounting hill 12.
  • the second hole 34 has a closed circumferential inner edge. 1 and 2, the fastening of one end of the fastening tape 13 in the first hole 14 and the second hole 34 of the mounting wing 12 is shown.
  • the first hole 14 and the second hole 34 lie next to one another in the mounting wing 12.
  • the end of the fastening tape 13 is first threaded through the second hole 34 in the direction from the filter opening 4 to the face opening 3. Then the end of the fastening tape 13 is bent over and through the slot 16 into the first hole
  • the diameter of the fastening tape 13 is equal to or slightly larger than the diameter of the first hole 14.
  • the diameter of the fastening tape 13 is equal to or slightly larger than the diameter of the second hole 34. Since the fastening tape is in the first Hole 14 clamped. As a result, the fastening tape is clamped firmly in the second hole 34.
  • the fastening of the fastening tape via the first hole 14 and the second hole 34 provides a simple and quick way of fastening the fastening tape 13 to the base body 1.
  • FIGS. 11 to 13 The exemplary embodiment according to FIGS. 11 to 13 is described below.
  • FIG. 11 shows a particle-filtering half mask 101 with several individual parts in a preferred embodiment.
  • a mask body 110 made of a thermoformable material which has a circumferential edge beading 120 which, especially in the nose and cheek area, leads to a tight fit of the mask 101 to the facial contour.
  • the ergonomic fit is achieved through the design of the mask body 110, which does not lose its fit even when a tensile load is introduced by the mounts.
  • stiffening ribs 115 are integrated into the mask body 110, which are also produced in the thermoforming process.
  • the mask body 110 has two fastening options 112 on each side for holding the mask 101, each of which has two openings that allow the length of the head straps 113 to be adjusted.
  • the mask body 110 offers the possibility of integrating a valve in the nasal area, which allows the air to escape when you exhale.
  • the mask body 110 is designed as an additional seal and to increase wearing comfort with a deep-drawn cavity 111 that closely adjoins the nostrils.
  • the filter 117 consisting of one or more layers of fabric is integrated into the recess 116 provided in the mask body 110. This can be done by gluing, sealing or clipping.
  • the half mask 101 is in particular a particle-filtering respiratory protection half-mask for protection against aerosols and particles, the curved mask body 110 of which is made of thermoformable material and can be fixed to the wearer's head by fastening brackets 112 and lies tightly against the facial contour of the wearer.
  • the curved mask body 110 consists of a thermoformable material which receives a single or multi-layer filter fabric 117 in a filter recess 116.
  • the half mask 101 has a fastening holder 112 with cutouts 114 which receive a fastening strap 113.
  • the fastening strap 113 is adjustable in length for fixing the mask body 110.
  • a filter fabric 117 tightly inserted into a filter recess 116 by gluing, clipping or sealing becomes a unit with the mask body 101, the positioning of the inserted filter fabric 117 taking place via so-called domes 121.
  • Stiffening ribs 115 and an edge bead 120 form the mask body 101 in a rigid manner in order to reduce deformation of the half mask 101 when a tensile load is introduced.
  • a nasal cavity 111 which is produced by a thermoforming process, receives its fit.
  • FIGS. 14 and 15 The exemplary embodiment according to FIGS. 14 and 15 is described below.
  • FIG. 14 shows the mask body 210 of the particle-filtering half mask 201 in a preferred embodiment.
  • a mask body 210 made of a thermoformable material which has a circumferential edge beading which, especially in the nose and cheek area, leads to a tight fit of the mask 201 to the facial contour.
  • the ergonomic fit is achieved by the design of the mask body 210, which does not lose its fit even when a tensile load is introduced by the mounts.
  • stiffening ribs 215 are integrated into the mask body 210 on the lateral surface as well as on the front surface, which are also produced in the thermoforming process. These stiffening ribs 215 are designed in such a way that the breathing air can flow through the stiffening ribs 215 during inhalation and exhalation.
  • the mask body 210 has a circumferential bead for the tight fixation of the filter 217.
  • a second bead located behind it in the direction of the nasal cavity 211 fixes the filter 217 on the mask body 210 with the aid of the rubber ring 224.
  • the filter 217 consisting of one or more layers of fabric is pulled over the mask body 210 and fixed with the rubber ring 224 in the groove provided by the two flanges.
  • the filter 217 can be pulled loosely or with folds over the mask body 210.
  • the half mask 201 is in particular a particle-filtering respiratory protection half mask for protection against aerosols and particles, the mask body 210 of which is made of thermoformable material and can be fixed to the wearer's head by fastening brackets 212 and is in close contact with the facial contour of the wearer.
  • the mask body 210 consists of a thermoformable material which allows the inhaled and exhaled air to pass through a filter opening 216.
  • a single or multi-layer filter fabric 217 can be pulled over the mask body 210, wherein the single or multi-layer filter fabric 217 can be smooth or the filter fabric can be provided with folds 218.
  • a single or multi-layer filter fabric 217 can be pulled over the mask body 210, wherein the single or multi-layer filter fabric 217 can be tightly fixed with a rubber ring 224.

Landscapes

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

Abstract

L'invention concerne une partie principale (1) destinée à un masque couvrant le nez et la bouche (40). La partie principale (1) comprend une région de contact facial (2) pour entrer en contact avec le visage d'un utilisateur. La région de contact facial (2) entoure une ouverture faciale (3) de partie principale (1) qui fait face à l'utilisateur lors de la mise en contact avec le visage de l'utilisateur. La partie principale (1) est conçue de telle sorte que les narines et la bouche de l'utilisateur soient disposées dans l'ouverture faciale (3) de la partie principale (1) lors de la mise en contact avec le visage de l'utilisateur. La partie principale (1) présente une ouverture (4) de filtre destinée à être recouverte par un élément filtrant (30). L'ouverture (4) de filtre est disposée à l'opposé de l'ouverture faciale (3). Un axe central imaginaire commun (50) s'étend à travers l'ouverture faciale (3) et l'ouverture (4) de filtre. La partie principale (1) est conçue de telle sorte que l'élément filtrant (30) puisse être fixé à la partie principale. La partie principale (1) présente une partie extérieure (5) qui repose sur l'extérieur lors de la mise en contact avec le visage de l'utilisateur et qui est au moins partiellement prévue pour venir en contact avec l'élément filtrant (30) sur la partie principale (1). La partie principale (1) présente au moins un creux (6) sur la partie extérieure (5), et la partie principale (1) est conçue de telle sorte que, lorsque l'élément filtrant (30) est fixé à la partie principale (1) et est en contact avec le visage de l'utilisateur, l'air puisse être aspiré par l'utilisateur dans le creux (6) à travers l'élément filtrant (30) et depuis le creux (6) vers l'ouverture faciale (3).
PCT/EP2021/059971 2020-04-21 2021-04-16 Masque couvrant le nez et la bouche et partie principale pour celui-ci Ceased WO2021213934A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102020002598.6 2020-04-21
DE102020002598 2020-04-21
DE102020003077 2020-05-22
DE102020003077.7 2020-05-22

Publications (1)

Publication Number Publication Date
WO2021213934A1 true WO2021213934A1 (fr) 2021-10-28

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ID=75588217

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/059971 Ceased WO2021213934A1 (fr) 2020-04-21 2021-04-16 Masque couvrant le nez et la bouche et partie principale pour celui-ci

Country Status (1)

Country Link
WO (1) WO2021213934A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1502450A (en) * 1919-06-30 1924-07-22 William H Wood Respirator
DE8007205U1 (de) 1980-03-15 1981-12-10 Drägerwerk AG, 2400 Lübeck Atemschutzhalbmaske
EP0258508A1 (fr) * 1986-09-05 1988-03-09 Siebe North, Inc. Masque respiratoire à élément de filtrage interchangeable
US20030029454A1 (en) * 2001-08-10 2003-02-13 Daniel Gelinas Respirator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1502450A (en) * 1919-06-30 1924-07-22 William H Wood Respirator
DE8007205U1 (de) 1980-03-15 1981-12-10 Drägerwerk AG, 2400 Lübeck Atemschutzhalbmaske
EP0258508A1 (fr) * 1986-09-05 1988-03-09 Siebe North, Inc. Masque respiratoire à élément de filtrage interchangeable
US20030029454A1 (en) * 2001-08-10 2003-02-13 Daniel Gelinas Respirator

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