WO2017155152A1

WO2017155152A1 - Fine dust removal mask

Info

Publication number: WO2017155152A1
Application number: PCT/KR2016/004330
Authority: WO
Inventors: 유영호
Original assignee: 주식회사네오메드
Priority date: 2016-03-07
Filing date: 2016-04-26
Publication date: 2017-09-14

Abstract

The present invention relates to a fine dust removal mask, wherein a mask body comprises an outer cover and a refillable inner cover, so as to enable a user to continuously use the mask by replacing only the refillable inner cover, and the outer cover and the refillable inner cover are coupled to or separated from each other by an exhaust valve. To this end, the present invention comprises a mask body and string adjusting members for allowing a user to wear the mask in a custom-fit manner by adjusting ear hook strings hung on his/her ears, the string adjusting members being disposed on both sides of the upper end of the mask body, wherein: the mask body comprises an outer cover shaped to three-dimensionally cover a part below a wearer's eyes, including both cheeks and the chin, and a refillable inner cover on the inner side of the outer cover; and exhaust valves are disposed on both sides of the central portion of the mask body respectively while coupling and fixing the outer cover and the inner cover to each other.

Description

Fine Dust Mask

The present invention relates to a mask for removing fine dust, and more particularly, the mask body is provided as an outer cover and an inner cover for refilling and can be used while replacing the inner cover for refilling, and the outer cover and the inner cover for refilling are combined by an exhaust valve. The present invention relates to a mask for removing fine dust.

In general, a mask is an object that covers the respiratory organs such as the nose and the mouth, and is intended to prevent substances from inhaling fine dust in the air through the nose and scattering from the mouth. Unlike the gas mask or dust mask for easy portability, the mask is mostly provided with a filter having a simple structure in the sheet of the textile material.

As industrialization accelerates, there is a continuous increase in environmental pollutants and fine dust due to yellow dust, and a higher level of hygienic masks is required as the threat from the emergence of new viruses increases.

There are a myriad of different types of masks, and only a couple of these masks are briefly described.

Korean Patent No. 10-1041835 presented in the following prior art document is characterized in that it is attached to the inner surface of the cover portion is provided with a noble filling portion to prevent the moisture discharged through the nostrils or mouth to move toward the eyes. .

The mask of the above patent is only to prevent the air discharged from the nose and mouth by the noble filling portion to move upward toward the eyes, and because it is made only through the cover when breathing and exhaling breath The rest can be uncomfortable differently than usual, and in particular, during the breathing process, water droplets in the air form on the cover part. Thus, when water droplets form on the cover part, it implies that the foreign matter is not properly filtered.

In addition, the Korean Patent No. 10-1201469 is provided with an exhaust module in the front center of the mask body, the intake module is provided on one or both sides of the exhaust module, characterized in that the intake module is provided with a multi-layered intake filter. However, the mask of this patent implies that the intake of external air is possible only through a small size intake filter stacked in multiple layers in the intake module, so that it may be difficult to inhale comfort as usual.

The present invention was developed in order to solve the conventional closed and problems as described above, the object is to provide a breathable and filterable mask body of the multi-layer fiber sheet in the outer cover by providing a removable inner cover and an outer cover The present invention provides a mask for removing fine dust, which can be used repeatedly while replacing an inner cover that is a member, and thus can be reused.

Another object of the present invention is to provide an exhaust valve on each side of the mask body, the inner and outer cover constituting the mask body by the exhaust valve can be easily coupled or fixed, through the inner and outer cover that is the mask body The outside air is introduced and the air exhaled through the mouth and the nose is easily discharged through the exhaust valves on both sides to provide a mask for removing fine dust that allows the wearer to breathe comfortably as a normal breath of the mask.

Another object of the present invention is to form a thin periphery of the valve plate of the exhaust valve to ensure that the valve plate is tightly sealed to the valve body when inhaling and the valve plate material is easily spaced from the valve body when exhaled, so that the same breath as usual The present invention provides a mask for removing fine dust.

Still another object of the present invention is to provide a fine dust removal mask that maintains the original state without changing the shape of the mask body by providing the outer cover as a fiber fabric woven in a triple structure, and excellent washing and breathability. .

Another object of the present invention is to provide a multi-layer fiber sheet by a plurality of filter materials as a functional fabric to prevent antibacterial, deodorization as well as fine dust is made to prevent bad breath, saliva and cosmetics without getting wet, After a certain period of time, when the bad breath, saliva, and cosmetics start to appear, the inner cover can be removed and disposed of, and a new inner cover can be used in combination. Therefore, a mask for removing fine dust can be obtained. To provide.

The present invention for achieving the object as described above in the mask for fine dust removal comprising a mask body and a strap adjusting member that can be worn as a fit to the user's ears by using the earring straps on both sides of the mask body The mask body is characterized by being provided with an inner cover for refilling the inner cover and the inner shape of the three-dimensional wrapping from the wearer's eyes to the chin including both sides of the ball.

The outer cover is preferably provided in a triple structure provided with both skin layers and intermediate layers woven by connecting both skin layers apart. The outer skin layer of both skin layers of the outer cover is preferably woven into a mesh shape in order to improve air permeability.

When the outer cover is worn on the user's face, there is no change in shape to maintain its original state and breathability is good, and there is no heterogeneity and rejection on the skin, and it is a soft and hand-washable material.

The inner cover is sufficient to be provided with a multi-layer filter member for filtering harmful substances, yellow dust and fine dust. For example, it may be provided with five endothelial fabrics such as spun bond, melt brown, activated carbon filter, ocher filter, and polyester from the outside. The spun bond is excellent in touch and flexibility, and excellent in filtration and breathability. The melt brown generates static electricity to maximize the amount of impurities collected and is harmless to the human body. The activated carbon filter has an anti-odor, antibacterial function and removes odors and toxicity and has a clean effect. The ocher filter is excellent in antibacterial and anti-worm and deodorant effect. The polyester (Poly Ester) is smooth and the surface does not come in contact with the makeup even if it comes in contact with the skin there is no heterogeneity and rejection on the skin is comfortable to wear.

The outer cover and the inner cover constituting the mask body is connected to the upper center portion to surround three-dimensionally from the wearer's eyes to the chin, including both sides of the ball to be cut in both symmetrical butterfly wings shape, and the lower center portion is opposed to each other. It is characterized by being sewn.

At the center of the upper end of the outer cover and the inner cover, the first and second nose clips formed with the outer and inner covers are formed in a double shape so as to prevent the air discharged from the wearer's nose or mouth from leaking to the upper end of the mask body. Characterized in that provided.

The outer cover and the inner cover forming a pair on both sides of the central portion of the mask body is provided with two exhaust valves and the mask body is fixed to each other by an exhaust valve.

The exhaust valve has an upper valve body formed in a cap shape convex upward and a plurality of first through holes, a lower valve body coupled to a lower surface of the upper valve body, and having a plurality of second through holes formed therein, and the lower valve. It characterized in that it comprises a valve plate material which is installed in close contact with the upper surface of the through hole of the body.

The upper valve body has a shortening boss is formed in the center of the upper convex groove, the coupling groove is formed on the inner surface of the groove for coupling and fixing with the lower valve body and for setting at regular intervals along the lower surface of the upper valve body. Protuberances are formed protruding.

The lower valve body is provided with a plate having the same shape as the upper valve body in the plane, but is inserted into the groove of the upper valve body and at the same time a hollow circular insertion portion is provided so as to communicate inside and outside and a plurality of ribs radially on the upper end of the circular insertion portion. It is provided and characterized in that the short axis protrudes in the center of the rib intersects and the engaging projection is inserted into the coupling groove to the outer side of the main surface of the circular inserting portion is protruded.

The valve plate material is a disk-shaped plate material which is inserted into the short axis of the lower valve body and supported by the short axis boss of the upper valve body. The center part is thick and the peripheral part is preferably formed thinner than the thickness of the center part. The reason is that the valve plate material is in close contact with the upper surface of the circular insertion portion forming the second through-hole when breathing in, and blocks the outside air, and the valve plate material is easily discharged from the upper surface of the circular insertion portion when exhaling.

In addition, the upper end of the mask body is provided with a strap adjusting member for adjusting the earring straps as the user can be tailored, but the strap adjusting member is provided with a plate shape of the moon suspension and arc-shaped string having an arc-shaped string guide groove on both sides of the plate Hanger pieces are formed and is preferably provided in the shape of a seagull easy to fit into the string guide groove to hang the earring straps on the arc-shaped string hook piece.

The strap adjusting member is characterized in that the knurling portion is formed on the lower surface attached to the mask body and bent in a shape seated on the wearer's face.

According to the mask for removing fine dust of the present invention, the mask body having good breathability and filterability is provided as a removable inner and outer cover so that the inner cover of the filter member of the multi-layer fiber sheet can be replaced in the outer cover and thus used repeatedly. As a result, it is possible to reuse so that life can be extended.

In addition, the present invention by providing an exhaust valve on both sides of the mask body, the inner and outer cover constituting the mask body can be easily combined or fixed by the exhaust valve, and the outside through the inner and outer cover that is the mask body The air that enters and exhales through the mouth and nose is easily discharged through the exhaust valves on both sides, allowing the user to breathe comfortably like the normal breath of the wearer, which is a mask function.

In addition, the present invention by forming a thin portion of the valve plate periphery of the exhaust valve when the inhaled valve plate material is surely sealed, and when exhaled, the valve plate material is easily spaced apart from the valve body can be breathed as usual Done.

In addition, the present invention by providing the outer cover as a fiber fabric woven in a triple structure to maintain the original state without changing the shape of the mask body and excellent washing as well as breathability.

In addition, the mask for removing fine dust of the present invention by providing a multi-layer fiber sheet with a plurality of filter materials as a functional fabric, the antibacterial, deodorization as well as fine dust is removed, so no bad breath, saliva and cosmetics If bad breath, saliva, and cosmetics start to appear after use for a certain period of time, the inner cover can be removed and disposed of, and the new inner cover can be combined and used for optimal hygiene and health care.

The present invention provides an arc-shaped string guide groove having an arc-shaped string guide groove on both sides of the plate and a chevron-shaped string guide groove guided by the arc-shaped string hook piece, so that the user can easily adjust the earring strap of the mask as a custom.

1 is a perspective view showing a mask for removing fine dust according to an embodiment of the present invention.

2 is an exploded perspective view showing a mask for removing fine dust according to the present invention.

Figure 3 is an exploded view of a flat unfolded state by extracting only the outer cover according to the present invention.

Figure 4 is an exploded view of a flat unfolded state by extracting only the inner cover according to the present invention.

5 is an exploded perspective view showing an exhaust valve in the fine dust removal mask of the present invention.

Figure 6 is a perspective view of the state viewed from the bottom so that the groove of the upper valve body in Figure 5 is visible.

Figure 7 is an assembled cross-sectional view showing an exhaust valve portion of the fine dust removal mask of the present invention.

Figure 8 is a perspective view showing a strap adjusting member of the earrings applied to the mask of the present invention.

Hereinafter, exemplary embodiments of the mask for removing fine dust according to the present invention will be described in detail with reference to the accompanying drawings.

For reference, the size of the components shown in the drawings referred to in describing the present invention, the thickness of the line, etc. may be somewhat exaggerated for the convenience of understanding, the terms used in the description of the present invention is a function of the present invention. As it is defined in consideration, it may vary according to user, operator's intention, convention, etc. Therefore, the definition of the term will be appropriate to make based on the contents throughout the present specification.

1 to 8 are diagrams for explaining the fine dust removal mask of an embodiment according to the present invention.

The fine dust removing mask of the present invention, as shown in Figure 1, the mask body 100 and the exhaust valve 200 provided on both sides of the center of the mask body 100 and the earrings on both sides of the upper end of the mask body 100 It is configured to include a string adjustment member 300 that can connect the string (310).

The mask body 100 is provided in a shape that surrounds the three-dimensional from the wearer's eyes to the chin, including both sides of the ball, it is provided with an outer cover 110 and the inner cover 120 for refills therein.

The outer cover 110 and the inner cover 120 is provided with a fiber fabric, but the two upper symmetrical butterfly wing shape is cut to connect the upper part of the center and the sewing parts (116, 126) of the lower center part by sewing each other to the wearer's eyes It includes a three-dimensional, ergonomically wrapped three-dimensional shape from the bottom to the chin, including both sides. In addition, coupling through

holes

117 and 127 are formed on the upper side of the

sewing parts

116 and 126 of the outer cover 110 and the inner cover 120 to allow the exhaust valve 200 to be mounted therethrough.

The outer cover 110 is provided in a triple structure provided with both

skin layers

111 and 112 woven by polypropylene, and an intermediate layer 113 woven by connecting both

skin layers

111 and 112 spaced apart from each other. The outer skin layer 111 of the outer skin layers of the outer cover 110 is preferably woven in a mesh shape in order to improve air permeability.

In addition, the outer cover 110 may be any material as long as there is no change in shape when worn on the user's face and maintains its original state, and breathability is good, and there is no heterogeneity and rejection on the skin, and it is soft and hand washable.

The inner cover 120 is preferably provided with a multi-layered filter member for reliably filtering harmful substances, yellow dust and fine dust. For example, five kinds of endothelial fabrics, such as spun bond 121, melt blown 122, activated carbon filter 123, ocher filter 124, and polyester (Poly Ester, 125) from the outside. Can be prepared as. The spun bond 121 has excellent touch and flexibility, and excellent filtration and breathability. The melt brown 122 generates static electricity to maximize the amount of impurities collected and is harmless to the human body. The activated carbon filter 123 has an anti-odor, antibacterial function, removes odors and toxicity, and has a clean effect. The ocher filter 124 is excellent in antibacterial and anti-worm and deodorant effect. The polyester (Poly Ester, 125) has a smooth surface, even if it comes in contact with the skin does not bury the makeup well, there is no heterogeneity and rejection on the skin is comfortable to wear.

Mask body 100 according to the present invention, unlike conventional masks that are difficult to reuse because of the bad breath, saliva and cosmetics, refill inner cover 120 is a multi-layer fiber sheet by a plurality of filter materials of the functional fabric By providing antibacterial, deodorization, as well as fine dust removal is possible to prevent the dampness of the bad breath, saliva and cosmetics. When the mask of the present invention starts to smell, saliva, cosmetics after using a certain period of time, the inner cover 120 is separated and disposed of and can be used by combining a new inner cover 120, so it is optimal for hygiene and health care. The effect can be devised.

In the center of the upper end of the outer cover 110 and the inner cover 120, the outer and

inner cover

110, 120 to suit the shape of the user's nose in a double so that the air discharged from the user's nose or mouth is not leaked to the upper end of the mask body (100) First and second nose clips (130, 140) that can freely mold the center of the upper end of the) is provided.

Since the second nose clip 140 of the inner cover 120 and the first nose clip 130 of the outer cover 110 are in close contact with each other from the upper part of the nose of the wearer to the lower part of the eyes of both sides, breathing is performed. When exhaling, the air discharged from the user's nose or mouth does not leak, so even wearers wearing glasses prevent steaming and conversely, when breathing in, fine dust is blocked.

Since the mask body 100 is provided as the outer cover 110 and the inner cover 120 for the refill of the filter function as described above, the inner cover 120 used for a predetermined period of time is separated and disposed of, and the new inner cover 120 is disposed. It can be used in combination with the outer cover 110, thereby enabling the repetitive reuse of the outer cover 110 forming the mask body 100 to extend the service life.

Two pairs of exhaust valves 200 are provided on both sides of the central portion of the mask body 100, and the outer cover 110 and the inner cover 120 forming the mask body 100 are exhaust valves 200. Are fixed to each other by).

The exhaust valve 200 is formed in the upper convex cap shape and the upper valve body 210, the plurality of first through holes 216 are perforated, and fixed to the lower surface of the upper valve body 21 and a plurality of It comprises a lower valve body 220 is formed with a two-hole 225 and the valve plate member 230 is installed in close contact with the upper surface of the second through-hole 225 of the lower valve body 220.

The upper valve body 210 has a shortening boss 213 is formed in the center of the upper convex groove 212 and the coupling groove 214 for coupling and fixing with the lower valve body 220 on the inner surface of the groove 212. ) Is formed, and the setting protrusion 215 protrudes at a predetermined interval along the lower surface of the upper valve body 210.

The lower valve body 220 is provided with a plate having the same shape as the upper valve body 210 in the plane, but is fitted into the groove 212 of the upper valve body 210 and at the same time coupled to the inner and outer hollow hollow insert ( 221 is provided, a plurality of ribs 222 are provided radially on the upper end of the circular insertion portion 221, the short axis 223 is protruded in the center of the intersection of the ribs 222 and the circular insertion portion 221 Coupling protrusion 224 is inserted into the coupling groove 214 is coupled to the outer side of the main surface protrudes.

The valve plate member 230 is a disk-shaped plate member inserted into the short axis 223 of the lower valve body 210 and supported by the short axis boss 213 of the upper valve body 210. It is preferable to form thinner. The reason is that when the breathing in the valve plate 230 is in close contact with the upper surface of the circular insertion portion 221 forming the second through hole 225, the valve plate 230 is easy to block the outside air and exhale This is to discharge the spaced apart from the upper surface of the circular inserting portion (221).

In particular, the upper end surface of the circular inserting portion 221 of the lower valve body 220 is preferably formed of a valve seat inclined to a high outer side and a low inner side. The reason is that the thin edge end of the valve plate 230 can be tightly contacted to maintain airtightness.

One pair (two total) of exhaust valves 200 are provided on each side of the mask body 100 in pairs, and when exhaling, the valve plate 230 of the exhaust valve 200 has a different resistance. Open without it allows breathing the same as usual.

In addition, both sides of the upper end of the mask body 100 is provided with a strap adjusting member 300 that can be adjusted by the user tailoring the earring strap 300. The string adjusting member 300 is provided with a plate-shaped plate 301 of the suspension shape and arc-shaped string piece 303 having an arc-shaped string guide groove 302 is formed on both sides of the plate 301 and the arc-shaped string piece In order to fasten the earring strap 310 to 303, it is preferable to provide a chevron inlet 304 which is easy to fit into the string guide groove 302.

The strap adjusting member 310 may be formed with a fine concave-convex portion for improving the adhesive force on the lower surface to be attached to the mask body 100 and bent into a shape that is seated on both sides of the ball of the user's face. The earring strap 310 is a closed band that can be worn as a fit on the user's ear, as long as it has elasticity, any material may be used. For example, there are bands or rubber bands woven to have elasticity.

It will be briefly described the assembly process of the mask for removing fine dust according to the present invention configured as described above.

First, the inner cover 120 is laminated on the inner side of the outer cover 110 constituting the mask body 100, but the coupling holes 117 and 127 of the outer cover 110 and the inner cover 120 are matched, respectively. Exhaust valves 200 are installed in the coupling through

holes

117 and 127.

The installation method of the exhaust valve 200 is located on the inner side of the inner cover 120 after positioning the groove 212 of the upper valve body 210 to match the through hole 117 of the outer cover 110 outside. The circular insertion portion 221 of the lower valve body 220 is inserted into the groove 212 of the upper valve body 210 through the coupling hole 127, but the coupling protrusion 224 of the circular insertion portion 221 is inserted therein. Is inserted while gently pressing so as to be inserted into the coupling groove 214 of the main surface of the groove 212 and rotates to one side, the coupling protrusion 224 of the circular inserting portion 221 is a coupling groove of the main surface of the groove 212. 214 is fixed to be coupled. As such, when the upper and

lower valve bodies

210 and 220 are coupled and fixed, several setting protrusions 215 formed on the lower surface of the upper valve body 210 are set into the outer cover 110 without being rotated.

The outer cover 110 and the inner cover 120 constituting the mask body 100 is simply fixed by simply installing the exhaust valve 200 as described above.

A method of wearing the fine dust removing mask of the present invention assembled as described above will be briefly described.

First, the user adjusts the fitting to be comfortable without pressing when the earring strap 310 is walked through the strap adjusting member 300 provided on the upper sides of the outer cover 110 forming the mask body 100. .

As such, the method for adjusting the earring strap 310 is to bend a portion of the earring strap 310 which is a closed band into an arc shape and insert it into the string guide groove 302 of the strap adjusting member 300 to the arc-shaped strap piece 303. Fixed but the earrings 310 extending to the rear of the mask body 100 is fixed to the earrings 310 so as not to be too tight when the user wears the ear straps 310 to hang on the user's ear.

After adjusting the earring strap 310 as described above, the earring strap 310 of both sides of the mask body 100 is gently pulled and worn on both ears of the user. When the mask is worn, the lower part of the mask body 100 is in close contact with the user's chin and cheeks, and the mouth and nose part has a space as well as the face part under the eye, which is the top of the nose, is excited.

At this time, the first and second nose clips 130 and 140 provided at the upper end portions of the outer and

inner covers

110 and 120 are corrected to be in close contact with the face under the eye, which is the upper end of the user's nose. As described above, when the first and second nose clips 130 and 140 of the upper and

outer covers

110 and 120 forming the mask body 100 are corrected, the exhaust valves on both sides of the mask body 100 when the user breathes in Since 200 is closed, the outside air is sucked only through the outer cover 110 and the inner cover 120, but fine dust such as antibacterial, deodorant and yellow dust is filtered while passing through the outer cover 110 and the inner cover 120. It is then inhaled. At this time, the central part of the mask body 100 is formed with a large area of space on the face including the user's mouth and nose and the outside air is suction-filtered through this large area of space to breathe as usual breathing You can drink it.

On the contrary, the air discharged from the nose or the mouth when the user exhales the mask body 100 because the upper end portion of the mask body 100 is reliably blocked by the first and second nose clips 130 and 140 in double close contact. It does not leak to the upper end of the inner and outer cover (120, 110) to be made is discharged in a comfortable state only through the two exhaust valves 200 installed on both sides of the mask body (100).

As described above, the upper end of the mask body 100 is reliably blocked by the first and second nose clips 130 and 140 in close contact with each other so that the air discharged from the user's nose or mouth does not leak when exhaling the breath. Even wearers who wear are not only prevented from fog, but also make sure to block fine dust.

Particularly, when the user wearing the mask of the present invention exhales, the valve plate 230 of the exhaust valve 200 provided on both sides of the mask body 100 opens without any resistance, thereby allowing the same breathing as usual. When the valve plate 230 of the exhaust valve 200 is opened as described above, most languages are spoken while exhaling, so that accurate pronunciation is possible, as well as language spoken correctly, thereby removing the mask when talking. This will be solved.

As described above, the mask of the present invention is the outside air through the outer cover 110 and the inner cover 120, which is the mask body 100, and the air thus sucked in is easily discharged through the exhaust valves on both sides of the mask You can breathe in a comfortable state, such as the normal breath of the wearer, which is a natural function.

When the inner cover 120 is contaminated by using a mask as described above, only the inner cover 120 may be removed and removed from the outer cover 110, replaced with a new inner cover 120, and then reused. There is an economical advantage over conventional masks that dispose of the whole.

When the inner cover 120 is to be replaced in the mask of the present invention, the lower valve body 220 of the exhaust valve 200 is gently rotated by gently rotating the lower valve body 220 constituting the exhaust valve 200 in the opposite direction to the assembly direction. It is to be separated from the valve body 210. When the lower valve body 220 is separated in this way, only the inner cover 120 may be replaced with a new one from the outer cover 110, and the lower valve body 220 may be assembled to the upper valve body 210 as described above. As such, only the inner cover 120 can be replaced and reused several times.

As described above, specific embodiments of the present invention have been described, but the present invention is not limited to the embodiments disclosed in the specification and the accompanying drawings, and may be variously modified by those skilled in the art without departing from the technical spirit of the present invention. have.

The present invention can be usefully used in the field of sanitary masks to filter out viruses floating in the air due to the expression of new viruses as well as fine dust caused by environmental pollutants or yellow dust due to the acceleration of industrialization.

Claims

In the fine dust removal mask comprising a mask body and a strap adjusting member provided on the upper sides of the mask body to be worn like a hook on the ear of the user,

The mask body is a mask for removing fine dust, characterized in that provided with an outer cover of the three-dimensional wrap around the inner surface of the wearer from the wearer's eyes to the chin and the inner refill cover.
The method of claim 1,

The mask body has a pair of both sides of the central portion is provided with two exhaust valves, the outer cover and the inner cover constituting the mask body by the exhaust valve is fixed to each other, characterized in that the mask is coupled to each other.
The method according to claim 1 or 2,

The outer cover and the inner cover are cut into butterfly wing shapes that are bilaterally symmetrical shape connected to the top of the central portion so as to surround the three-dimensional from the wearer's eyes to the chin, characterized in that the bottom of the center is sewn against each other. Mask for removing fine dust.
The method according to claim 1 or 2,

The outer cover is a mask for removing fine dust, characterized in that it is provided in a triple structure provided with a skin layer of both sides, and the intermediate layer woven by connecting both of the skin layers spaced apart.
The method according to claim 1 or 2,

The inner cover is a mask for removing fine dust, characterized in that provided with a multi-layered filter member for filtering harmful substances, yellow dust and fine dust.
The method of claim 5,

The multi-layer filter member is composed of five types of endothelial fabrics of spun bond, melt brown, activated carbon filter, ocher filter and polyester from the outside. Mask.
The method of claim 1,

The strap adjusting member is provided with a plate of the shape of the moon and an arc-shaped string hook piece having an arc-shaped string guide groove on both sides of the plate is formed, and easy to fit into the string guide groove to fasten the earring string to the arc-shaped string hook piece Mask for removing fine dust, characterized in that provided in a chevron shape.
The method of claim 2,

The exhaust valve has an upper valve body formed in a cap shape convex upward and a plurality of first through holes, a lower valve body coupled to a lower surface of the upper valve body, and having a plurality of second through holes formed therein, and the lower valve. Mask for removing fine dust, characterized in that it comprises a valve plate material which is installed in close contact with the upper surface of the through hole of the body.