KR102501150B1 - mask valve - Google Patents

Abstract

The present invention relates to a mask valve which allows at least one layer to exert filtering power even in an exhaustion process when an exhaust valve is operated in a mask made of a multi-layered filtration layer. More specifically, by attaching the exhaust valve to a ventilation hole formed in a second layer and an anterior layer from a respirator of a multi-layered mask, air is filtered through the entire layer during inhalation, and air flows through an exhaust valve ventilation hole of a layer on the respiratory side not attached with the exhaust valve and a layer attached with the exhaust valve, during exhalation. It is possible to adjust airflow resistance or protective force to a desired level by opening only a portion of the ventilation hole.

Description

mask valve {mask valve}

In the present invention, when an exhaust valve is operated in a mask made of multi-layered filtering layers, at least one layer exerts filtering power even during exhaustion, and more specifically, from the second layer toward the front of the respirator toward the front. By attaching an exhaust valve to one side of the ventilation hole attached through the front filter material layer and providing a rear filter material layer on the rear side of the front filter material layer, air is filtered through all layers during inhalation breathing, and rear filtering material is filtered during exhaust breathing. Air is allowed to flow through the filter media layer and the exhaust valve.

A mask with an exhaust valve formed by passing through the entire filtering layer is inevitably discharged, so its use is limited in the COVID-19 situation.

In addition, automatic valves such as exhaust valves for ordinary masks cannot determine the level of respiratory resistance by the user, and it is also impossible to determine the protective force to suit the situation.

Accordingly, the user selects a product whose protective power has been determined, such as KF80, KF94, or industrial use.

In addition, since an automatic valve such as an exhaust valve for a normal mask penetrates all layers, it is impossible to block droplet discharge, or it is impossible for a user to set an appropriate level even if the exhaust valve penetrates only some layers.

Korean Patent Registration No. 10-2293924 (2021.8.19) A mask device and its control method selectively operate a plurality of cleaners formed on one side of a front cover. Korean Patent Publication No. 10-2021-0048117 (May 3, 2021) mask is a mask made of an exhaust hole formed on an inner part of a main cover having a suction hole and a filter formed on the exhaust hole. Korean Patent Registration No. 10-1730083 (2017.4.19.) A mask equipped with an exhaust valve is an exhaust valve formed in the opening of the mask body, and the exhaust valve is integrally formed with the body. Korean Patent Registration No. 10-1439123 (September 2, 2014) anti-fog mask has an exhaust valve assembly integrally formed with an anti-fog member so as to cover the nose of the wearer.

In order to solve the above problems, the present invention allows filtering power to be generated in one or more layers while the exhaust valve is attached,

Even if the exhaust valve is operated, substances discharged during breathing, such as droplets, are not directly discharged in an unfiltered state by the exhaust valve, but are filtered and discharged through a layer that is not bound by the exhaust valve.

In a mask having an exhaust valve on two or more layers of filter media from the rear respiratory side toward the front, a mask body having an edge fastened, and a head fastening part on the mask body, the mask body is second from the respiratory side toward the front. A front filter material layer having a ventilation hole formed in the layer layer or a ventilation hole passing through the front layer from the second layer toward the front from the respiratory side, an exhaust valve attached to one side of the ventilation hole of the front filter material layer, and the front filter material layer. It includes a rear filter material layer located on the rear side of the filter material layer, and a front and rear layer fastening part is provided on one side of the central part of the mask body to reduce the backward movement of the rear layer alone during inhalation breathing, wearing the mask and inhaling breathing It is an exhaust valve mask characterized in that the air is filtered through the entire filter layer during exhalation, and the air flows through the rear filter material layer and the exhaust valve during exhalation.

In a mask having an exhaust valve on two or more layers of filter media from the rear respiratory side toward the front, a mask body having an edge fastened, and a head fastening part on the mask body, the mask body is second from the respiratory side toward the front. A front filter material layer having a ventilation hole formed in the layer layer or a ventilation hole passing through the front layer from the second layer toward the front from the respiratory side, an exhaust valve attached to one side of the ventilation hole of the front filter material layer, and the front filter material layer. It includes a rear filter material layer located on the rear side of the filter material layer, the back filter material layer is larger than the exhaust valve and smaller than the front filter material layer, and the air is filtered through the entire filter material layer during inhalation breathing while wearing the mask, During exhaust breathing, air can flow through the back filter layer and the exhaust valve.

The rear filter material layer has a front and rear layer binding part provided at one or more of the rims of the rear filter material layer in the direction toward the exhaust valve vent or at least one of the places where the exhaust valve is attached, so that the rear layer independently moves backward during inhalation breathing. it did

The front and rear layer binding parts are formed on the rim side of the back filter material layer.

The front and rear filter material layers have a partial or entire area spaced apart from each other by a predetermined distance.

In the front and rear filter material layers spaced apart from each other, a portion of the plate fastening portion of the exhaust valve forms a rear protrusion.

The front and rear filter material layers spaced apart from each other are portions including at least one of twisted, wrinkled, embossed, or protruding parts of any one or more of the front and rear filter material layers facing each other.

The front and rear filter material layers spaced apart from each other are portions in which cotton or loose fiber layers are formed on the entirety or a predetermined area of at least one of the front and back filter material layers butt against each other. Between the front and back filter material layers spaced apart from each other, a cotton or coarse fiber layer is included on at least one of the front and back filter material layers or as a separate layer layer.

The entire area of the front and rear filter material layers is bonded to each other to form a front and rear layer bonding portion.

The separation distance of the front and rear filter media layers is formed to be wider at the side closer to the exhaust valve and narrower at the far side.

The exhaust valve includes a valve opening fixing part.

The valve opening fixing unit of the exhaust valve further includes a valve opening level setting unit to set the opening degree of the valve flow unit on the support plate.

In the exhaust valve, the support plate hanging part 21-1 protruding toward the rear of the valve moving part is inserted into the valve moving part hanging part 12-1 and flows forward and backward by any one or more of friction, locking jaw, and screw type. By making it possible to position, if the support plate hanger is closely attached to the support plate, it functions as a normal exhaust valve, and if it is pulled out and placed at a predetermined distance from the support plate, it functions as a valve opening level setting unit, and if it is pulled out and placed more than this, the valve is opened It is to function as a fixed part.

A layer support layer having at least one function of supporting the shape of the mask layer or strengthening the position of the exhaust valve is provided between certain layers of the filtering agent layer of the mask body.

The exhaust valve mask, characterized in that the layer support layer is a back filter material layer.

In the exhaust valve mask, the front filter material layer is the front layer from the third or fourth layer from the respiratory side to the front side.

The exhaust valve is provided in plurality.

The plurality of exhaust valves are bound to different layers, respectively.

The exhaust valve is provided in a ventilation hole formed in an inner layer among three or more filter media layers. That is, the exhaust valve is provided in the second layer toward the rear of the most frontal layer from the second layer toward the front of the respiratory tract among three or more filter media layers.

A method for manufacturing an exhaust valve mask, wherein the valve mask is supplied in close contact with a plurality of front filter material layers, the front filter material layer is joined and cut into a shape, and the exhaust valve ventilation hole is cut, The step of attaching the exhaust valve to the exhaust valve vent of the front filter layer layer, the step of supplying the back filter material layer to the rear side of the front filter material layer layer, the back filter material layer on the surface of the front filter material layer to which the exhaust valve is attached A manufacturing method in which the rear filter material layer covers an exhaust valve provided in the front filter material layer by cutting and joining according to the shape and forming a front and rear layer fastening portion.

The back filter material layer is supplied with a predetermined length longer than the width of the exhaust valve ventilation hole to cover the exhaust valve, and is cut after forming a front and rear layer binding portion.

The step of supplying the exhaust valve to the exhaust valve vent hole of the front filter layer layer and supplying the back filter layer layer to the rear side of the front filter layer layer layer is performed at the same time so as to be simultaneously bound.

1 is an exhaust valve mask 100.

It is a mask composed of a mask body 200 and a head fastening part 201, and an exhaust valve 130 is fastened thereto.

The head fastening part 201 is a string or band for positioning the mask on the ears or head, and may include a fastening ring or utilize an elastic body, and in FIG. 1, it is formed on the back of the mask body 200 and is not visible.

2 shows that the exhaust valve 130 is a rectangular exhaust valve 150.

A support plate ventilation hole 11 is formed in the support plate 10, and the support plate hanger 21 of the flexible valve moving part 20 is crossed over the valve moving part hanger 12 to pass the support plate vent hole 11 from the front Cover, and the valve flow part cover 30 covers the valve flow part 20 and presses and fixes the upper side of the valve flow part so that the lower side of the valve flow part 20 opens and closes according to breathing, so that the exhaust valve operates.

If the valve opening fixing part 50 is directed toward the support plate ventilation hole 11, a gap is formed between the valve moving part 20 located in the front side of the valve opening fixing part 50 and the support plate ventilation hole 11, It is impossible to close the pores 11,

In addition, even if the valve opening fixing part 1 (50-1) is lifted forward and spans the valve opening fixing part 1-1 ((50-1-1) of the valve moving part cover 30, the valve moving part 20 is the base plate Failure to seal the ventilation hole 11,

Insert the valve opening fixing part 2 (50-2) on the upper side of the valve moving part cover (30) into the valve opening fixing part 2-1 (50-2-1) of the support plate and use it as a hinge type, but normally use the valve moving part cover If the inner side of (30) is in contact with the valve moving part, the exhaust valve can be lifted and operated when the lower part of the valve moving part cover (30) is lifted, and the exhaust valve is operated when the lower part of the valve moving part cover (30) is pressed. The valve can be pressed and not operated, and by setting the degree of opening and closing of the valve moving part 20 according to the degree of pressing up and down, the valve opening fixing part 2 (50-2) is the valve opening level setting part 51 functions can be combined.

When the inclined plate is formed in the valve opening level setting unit 51, a difference occurs in the degree of gap generation depending on the angle toward the support plate ventilation hole 11, so that the user sets the desired level of air flow resistance and filtering power. possible. In addition, the same effect can be achieved by pulling out the valve opening level setting part 1 (51-1) having a jaw formed on the protruding rod to the valve opening fixing part 1-1 (50-1-1) of the valve moving part cover (30). generate In addition, if the valve opening fixing part 2 (50-2) is stopped at a certain angle by forming a jaw or friction part according to the lifting angle, it is also possible for the user to set the desired level of air flow resistance and filtration power according to the stopping angle. . The valve opening level setting unit 51 can set the size of the support plate ventilation hole by increasing the area, and can be formed on the upper side surface, etc., and is a control unit that comes out of the valve moving part cover 30. Valve moving part cover It is also possible to manipulate the open/close level from the outside of (30).

It is preferable to form a moving part cover ventilation hole 31 in the valve flow part cover 30 and to form a moving part cover ventilation hole 31 at the bottom so that it faces downward even when droplets are discharged, and as shown in the drawing, the front It is also possible to utilize all or part of the lower side of the drawing or the lower side of the drawing, and it is preferable to form the height of the front and rear so as not to touch the filtering layer as much as possible.

It is to be bound to the layer at one or more of the back side of the support plate 10 and the support plate fastening part 15.

The height of the support plate 16 is preferably formed not high in consideration of the function of maintaining the sealing force of the valve and the flow distance of the valve.

In this way, a configuration in which the valve can automatically or manually control the opening and closing of the air flow is possible as a conventional technique, including other shapes presented herein.

3 shows that the exhaust valve 130 is a circular exhaust valve 150-1.

A valve floating part hanging part 12-1 is formed in the center of the grill support 17 formed in the supporting plate vent hole 11-1 of the circular supporting plate 10-1, and the flexible valve moving part 20-1 The support plate hanging part 21-1, the center of which protrudes forward and backward, is inserted into the valve floating part hanging part 12-1 and can be positioned so that it can be moved forward and backward by friction, locking jaw or screw type, so that the valve opening level It is to be used as the setting unit 3 (51-3), and it is possible to use any one of these together. possible. In the drawing, only the front side of the support plate hanger 21-1 is illustrated, and the portion protruding toward the rear and plugged into the valve floating portion hanger 12-1 is omitted from the diagram.

When the rear protrusion of the support plate hanger (21-1) is closely attached to the valve floating part hanger (12-1) of the support plate so that the valve flow portion blocks the support plate ventilation hole (11-1), the function of a normal exhaust valve While doing, if you pull it out a certain distance from the support plate and place it at an almost reachable distance, you can partially reach or not reach it during breathing, or only reach a certain area depending on the hardness, thickness, area, air traffic, etc. of the valve moving part. It is obvious that it is possible, so it functions as a valve opening level setting unit, and if it is pulled out more than this, it functions as a valve opening fixing unit, so that the support plate ventilation hole 11-1 can always be opened.

If the support plate hanger 21-1 is not limited to functioning even if it is not formed in the center, such as being formed on the edge side of the circular valve flow part 20-1, similar to the support plate hanger 21 of FIG. It is also possible to form the valve flow portion of 3 in a rectangular shape, and in this way, it is also possible to form by mixing the shapes of FIGS. 1 and 2.

The valve moving part cover 30-1 covers the supporting plate 10-1 and the valve moving part 20-1 in a state where the supporting plate hanger 21-1 is inserted into the opening/closing level setting fitting 51-4. state, in the state where the valve opening level setting part 3 (51-3) protrudes out of the opening/closing level setting fitting part (51-4) of the valve moving part cover (30-1), the valve opening level setting part 3 (51-3 ) is pressed, the valve moving part 20-1 normally operates as a normal exhaust valve, and when the valve opening level setting part 3 (51-3) is pulled forward, the valve moving part 20-1 moves to the support plate 10-1. ) and the grill support 17, it can remain open even during intake and exhaust. The valve operation may be possible even without the valve moving part cover 30-1.

The intake and exhaust air is communicated through the moving part cover ventilation holes 31-1, and in the drawing, three are visible at the bottom of the front and one at the bottom of the side.

4 is a cross-sectional conceptual view in which the exhaust valves 150 and 150-1 are attached to the front side of the edge where the layer ventilation holes 240 pass through the mask body 200 and are attached.

In the left view of FIG. 4, the rear layer 1 (210) is located on the side of the face part 300 including the nose, and the front layer 1 (220), the front layer 2 (221), and the front layer 3 (222) are aligned in a straight line toward the front. Edges of the layer vent holes 240 drilled through are bound to each other, and the base plate fastening part 15 of the exhaust valve 150 is bound to the front side of the bound layer vent holes 240. The front layers of the mask body 200 and the base plate fastening part 15 of the exhaust valve 150 are bound, and each layer is in close contact or attached, but in the drawing, a conceptual diagram showing that it is spaced apart for easy identification In addition, the left drawing of FIG. 4 expresses that the front and rear filter layers are spaced apart from each other and the front filter layer layers are attached to each other or positioned very close to each other.

4, the rear layer 1 (210) and the rear layer 2 (211-1) are located on the side of the face part 300 including the nose, and the front layer 1 (220-1) and the front layer 2 (221) are located in the front side. -1), the edges of the perforated layer ventilation holes 240 are bound to each other, and the fastening plate fastening part 15 of the exhaust valve 150 is fastened to the fastened front side. The front layers of the mask body 200 are bound to the base plate fastening part 15 of the exhaust valve 150, and each layer is almost attached, but in the drawing, it is a conceptual diagram showing that it is spaced apart for easy identification.

It is possible to bind the exhaust valve to the place where the edge of the ventilation hole passing through the layer is bound, or to bind the edge of the ventilation hole at the same time while binding the exhaust valve to the vent hole. Binding to the vent hole edges of the entire front layer can securely fasten the exhaust valve and reduce air leakage between the vent holes of the front layer.

A front and rear layer binding portion (230, 230-1) for binding either side of the rear layer (210, 210-1, 211-1) and the front layer (220, 221, 222, 220-1, 221-1) to each other By forming a, it is possible to reduce that the rear layer (210, 211-1) is sucked into the respiratory tract during inhalation breathing, and even if sucked in, it is sucked in together with the front layer so that at least the rear layer layer alone is not sucked in so that it is sucked in degree has been weakened. At this time, the degree of being sucked in varies depending on the strength of the layers of the filter medium, whether there is a support or not, and the number of front and rear layer binding parts 230 and 230-1, the formation position, shape, etc., and the breathing volume is small and the air flow resistance of the filter medium If this is small, it is also possible to prevent being sucked in.

The front and rear layer binding parts 230 and 230-1 may bind the rear layer to the rearmost layer of the front layer, may bind to the rearmost two layers of the front layer, or bind to all the front layers. This may be desirable for ease of fabrication. The rear layer is preferably formed by binding all layers to the front layer if possible.

It is preferable that the front and rear layer binding parts are provided at the edge of the ventilation hole penetrating the front layer or at the position where the exhaust valve is attached to the mask body. It is also possible to form it, and in order to reduce the fluttering of the rear layer, it is preferable to form it close to the ventilation hole or exhaust valve, and it is possible to form it in about two places around the ventilation hole or exhaust valve, but about three or four places are preferable. It is preferable to form it in five or six places or less, and it may not be formed in the vicinity of the junction in the mask shape. If the front and rear layer binding parts are formed in multiple or large areas, or if the air flow resistance of the filter medium is low or the breathing volume is weak, the phenomenon of suction of the rear layer may be reduced or not occur.

The front layer is the one where the exhaust valves 150 and 150-1 are attached to the place where the layer ventilation hole 240 is formed, and the rear layer is the one where the ventilation hole is not formed on the rear side of the front layer, and the front and rear layer connection parts are connected to each other. . A weak layer that is bound to each other in the form of some points on the surface can look like a funnel, and this drawing is a conceptual diagram expressing the junction.

Even if the exhaust valve is attached, it is possible to use air filtered through at least one layer during intake and exhaust breathing.

Even if the exhaust valve is operated, substances discharged during breathing, such as droplets, are not directly discharged without being filtered by the exhaust valve, but are filtered and discharged through the rear layer where the exhaust valve is not attached.

The filtering area of the rear layer can be increased.

The air filtered by the rear layer can be discharged with less air flow resistance.

A filtering action may be intensively generated only in some layers of the mask.

The rear layer can move to the rear during inhalation breathing to reduce fluttering or discomfort in contact with the skin.

Incidentally, the exhaust valve is designed to make it easy for the user to selectively apply suitable air flow resistance by taking into consideration the air pollution level or activity level, that is, the protective power and convenience. It is a mask that allows the user to timely select the desired level of comfort and protection depending on the degree to which the exhaust valve is opened and closed.

Depending on the change in the amount of air required for breathing, such as during normal times, conversation, or exercise, or the change in polluted conditions such as closed crowds or outdoors, either the method of lowering the air flow resistance and selecting comfort, or the method of increasing the filtration power even if the air flow resistance is high choice is possible

By opening only a portion of the ventilation hole, it is possible to adjust the air flow resistance or the protective force to a more desired level.

1 is an exhaust valve mask 100.
2 shows that the exhaust valve 130 is a rectangular exhaust valve 150.
3 shows that the exhaust valve 130 is a circular exhaust valve 150-1.
4 is a cross-sectional conceptual view in which the exhaust valves 150 and 150-1 are attached to the front side of the edge where the layer ventilation holes 240 pass through the mask body 200 and are attached.

The present invention binds the exhaust valve to the second or third layer from the respirator of the multi-layered mask, so that air is filtered through the entire layer during intake, and the layer on the respirator side to which the exhaust valve is not attached during exhaustion. Air flows through the exhaust valve of the layer where the exhaust valve is mainly attached.

In addition, incidentally, the present invention can be expressed as a manually operated air flow control valve or a manual air flow switch. It allows the user to timely select the air flow resistance of the filtering face mask according to the situation, and can be applied to ordinary non-woven filters and cloth masks, and can be applied to cup-type (aka dome-type) masks and filter media made of thin layers. Even if it is not a mask used or a filtering face mask, a large part of the side covering the face is made of an air impermeable material, and it can be applied to a multi-use silicone mask that uses various filter media in some areas, and each filter media is front and rear. When used in, it can be referred to as a plurality of layers, and can be applied to a mask using two or more layers of filter media.

The exhaust valve can be made of any material to achieve the purpose of maintaining its shape and reducing air leakage, but it is preferable to make it lightweight, and the production of a flexible valve is made of silicone, flexible synthetic resin, rubber, etc. this is possible

This application is applied to a mask using mass-produced disposable filter material, and considers binding the exhaust valve to the filter material expressed as a layer of the mask. It is possible to apply the manufacturing process of a normal mass-produced mask in consideration of blocking other VOC generation, etc., and it is possible to prevent it from falling out when pressed, such as pressing it from both sides and holding it on the jaw, and manufacturing a normal mask valve It is possible to apply a process of doing and binding to a mask, and it is also possible to manually bind to a cloth mask or the like.

Although the exhaust valve may form the valve floating part hanging part 12 on one side of the rectangle as shown in the drawing, the grill is formed in the circular support plate ventilation hole 11, and the central axis protrudes about the center of the grill. If one protruding part of the moving part is inserted and one side is used as a handle, the valve can function by the action of the grill and the valve moving part. In this way, the shape of the valve flow part 20 coupled to one side of the rectangular support plate ventilation hole 11 and the circular shape can be considered representatively, and it is possible to apply a normal valve technology equal to or similar to this.

Since the air traffic volume, breathing resistance, and the filtration area of the mask filter material are determined according to the size of the layer ventilation hole 240 and the valve support plate ventilation hole 11, 11-1, the size of the exhaust valve and ventilation hole is adjusted.

If the ventilation hole of the exhaust valve is enlarged and the air flow rate is lowered, air may not flow through the mask filter material to which the exhaust valve is attached. can

The size of the exhaust valve is set in consideration of reducing the narrowing of the filtering area of the filtering face mask as much as the exhaust valve is formed.

When wearing the valve mask of the present application and breathing exhaust, air flows through the rear filter material layer and the exhaust valve. At this time, if the size of the ventilation hole of the support plate of the exhaust valve is small or the air flow resistance of the filter medium is low, the ventilation hole of the exhaust valve Although the air is discharged, some of it may be discharged through the front filter material layer, but if the size of the exhaust valve ventilation hole is appropriate and the amount of exhaust respiration is low, and the air flow resistance of the front filter material layer is high, the exhaust flow is backward. The entire amount may be discharged through the filter media layer and through the ventilation hole of the exhaust valve support plate.

As shown in FIG. 4, by using one or more exhaust valves attached to two layers or three or more layers, the user can determine the level of contamination of others, such as air flow resistance and protection, and droplet discharge. It is easier to determine accordingly.

If the overlapping area of the valve flow portion 20 around the support plate ventilation hole 1 is reduced in order to form a large ventilation hole, considering the possibility of air leakage, the support plate ventilation hole and the valve flow portion 20 size, hardness, elasticity, and durability.

If the rear layer 210 is a layer with low filtering power, it can be used for the purpose of convenience-oriented droplet discharge reduction, and if it is a layer with high filtering power, it can be mainly used for the purpose of high filtering power.

If the filtering power of the rear layer is set to about KF80 or KF94, and the front layer to which the exhaust valve is attached has a filtering capacity of about KF80, then open and fix the exhaust valve, the filtering power of the rear layer is applied continuously. and the filtering power of the front layer are added and continuously exerted. In addition, if the exhaust valve is not controlled and opened during exhaust, the filtering power is exerted by the rear layer during exhaust and the entire layer during intake.

If the rear layer has low filtration power and the front layers formed with exhaust valves are stacked with high filtration power, high filtration power can be exhibited in a situation where precise filtration power is required while being used mainly for convenience.

In this way, it is possible to form a mask with KF80 and KF94 and a mask with low filtering power as a mask formed by stacking multiple layers with low filtering power, and select from among them.

The front and rear layer fastening parts 230 and 230-1 can reduce the phenomenon of fluttering back and forth, such as when the rear layer touches the front layer during breathing and moves rearward to touch the skin. If the front and rear layer fastening parts (230, 230-1) are formed on one side of the periphery, it is more preferable because it is close to the place where there is a lot of air traffic, but it can be formed on the mask body at a further distance or replaced with the central part or other junctions. , it is possible to form a dot, line, or a small plane, and it is preferable to form it in the part where the layer ventilation hole is bound.

In terms of the manufacturing method, forming the front and rear layer fastening part forms a ventilation hole while passing through closely overlapping each layer surface of the front filter material layer supply line to match each other, and binds an exhaust valve to the ventilation hole, and at this time, through the front filter material layer While forming pores, the front layer binding part is formed in the ventilation part or the adjacent part and the exhaust valve is attached, or the front layer binding part is formed after forming the ventilation hole in the front filter material layer and binding the exhaust valve, or at this time, the front filter material The exhaust valve may be closed after the shape of the layer is completed. A typical exhaust valve mask manufacturing process can be performed in this way, and at this time, the mask's edge portion, nose support insert, central incision joint, logo, etc. are joined by a conventional method including ultrasonic waves. After manufacturing the mask to which is bound, an additional layer is supplied to the rear of the front filter material layer to form a front and rear layer binding part. At this time, the edge part can also be bound together. It is possible to form a smaller layer than the layer, but even if the back filter material layer is supplied in close contact regardless of size, it can be automatically cut and bound according to the size and shape of the front filter material layer surface to which the exhaust valve is bound.

Another method of attaching the rear filter material layer is, for example, if it is a circular exhaust valve vent hole, supplying the back filter material layer with a width of a short cut that can be bound to the edge of the layer vent hole and binding it to the edge of the layer vent hole, or , It is possible to form a layer that is not larger or very small than the front filter material layer by binding in an area larger than about 1 cm or binding in a square shape. Even when binding by using, the part to be bound may be referred to as a front and rear layer binding portion.

The rear filter material layer may be formed to a predetermined size larger than the exhaust valve vent hole, and formed slightly larger than the vent hole so that it is bound to the periphery of the vent hole, so that if the exhaust valve vent hole and the rear layer are almost equal in area, it leads to the vent hole. There may be a situation where the rear layer does not properly pass the air amount. Therefore, it is preferable that the rear filter material layer is formed with a diameter of about 1 cm or slightly larger than that of the exhaust valve ventilation hole when it is circular. When positioned biased toward the outer side of the mask, either side can be configured as only 0.5 cm or either side slightly wider.

In addition, if the rear layer is in close contact with the exhaust valve vent in exhalation, the amount of air passing through the rear layer and moving to the exhaust valve is reduced. In order to facilitate the discharge of the mask, it is preferable to form a space so that the rear filter material layer and the other mask materials on the front side are spaced apart from each other, even about 1 to 7 mm, considering the fact that the burden of the rear layer must be reduced. In addition, it is also possible to space only a part of the area without spacing the entire area in consideration of air discharge and air flow resistance.

The method of separating the rear filter material layer from the mask material such as the front filter material layer or exhaust valve is to twist, fold, emboss, crease, or form a protrusion to have a predetermined height with synthetic resin such as sponge, foaming agent, or non-woven fabric. Other conventional methods can be applied, including the like, and cotton or gauze can be formed on the entire or partial area of at least one of the front and rear filter material layers by facing each other where the fiber layer is formed, and at this time, the front and rear layer binding parts are different Like the layer bonding part, it can be formed at some points or linearly, and it is possible to bond the entire area by various conventional methods.

If the space between the front and rear layers is maintained as described, the rear layer does not adhere to the front during exhalation, so it is filtered in a large area of the rear filter material and discharged to the exhaust valve, thereby increasing the air flow resistance while increasing the efficiency of filtration. can reduce

As one of the methods of spacing the front and rear layers, if a fiber layer is formed, cotton or gauze may be more preferable for the purpose of maintaining a spaced apart space and making the mask lightweight, Forming or binding to any one of the front and rear layers It can be done or it is possible to insert a separate layer.

At this time, the front and rear layer binding parts may be in a state pressed by ultrasonic bonding or in a state in which protrusions having a predetermined height are bound.

Forming the front and rear layer fastening parts, but preventing exhaled air from easily passing through the gap between the front and rear layer fastening parts, lifting the central part around the exhaust valve vent hole, binding or forming a protrusion on the side of the exhaust valve vent hole where the rear layer is fastened, It is possible to apply a conventional technique such as forming a pleat part and configuring a front and rear layer fastening part, and when the exhaust valve is fastened to the front filter material layer, a part of the exhaust valve support plate fastening part toward the ventilation hole of the front filter material layer is moved toward the rear. Considering the thickness of the mask material including the front filter material layer at about 7mm, it is possible to form a space by forming a protrusion slightly longer than this by separating the exhaust valve and the front filter material layer from the rear filter material layer by a predetermined distance. As for the space, the rear protruding distance of the rearward protruding part of the supporting plate fastening part is the longest, and the distance between the front and rear filter material layers of the surrounding rear filter material layers may be close, and the rear filter material layer may be slightly larger than the exhaust valve vent hole. When the exhaust valve ventilation hole is not located in the center of the rear filter material layer, it is located inside even if it is not in the center of the rear filter material layer, so that one side of the central part of the rear filter material layer becomes more and more spaced. It can be said that the separation distance is narrowed.

The separation distance of the front and rear filter material layers may be the same from the rim to the exhaust valve position, but if the side closer to the exhaust valve is wider and the far side is narrower, the exhaust breath filtered over the entire area of the front and rear filter material layer is easily discharged to the exhaust valve. It is preferable because it is highly likely to be, and it is also possible to separate the front and rear filter material layers only in a partial area near the exhaust valve in consideration of the exhaust air flow resistance.

The exhaust valve may be located in the center of the mask body. At this time, the upper and lower mask body joints function as the front and rear layer fastening parts, or when the rear filter material layer is formed with a small width as the vertical part of the exhaust valve, the front and rear filter material layers are formed in the vertical direction. It is also possible to do, and looking at the exhaust valve of FIG. 1, if the rear filter material layer is formed to be smaller than the central part of the left and right width of the front filter material layer in a state located close to the side edge of the mask body or to a size that can block the exhaust valve vent hole In this case, the edge fastening part of the front filter material layer can function as the front and rear layer fastening part, and a part of the rear filter material layer, which is less than half of the area of the front filter material layer, is lifted backward during inhalation breathing. In order to reduce Additionally, a front and rear filter material layer binding portion may be formed. In order to manufacture such a shape, it is also possible to cover the exhaust valve by making the width narrower than that of the front filter material layer when the filter material is supplied from the filter material layer feeder after the exhaust valve is attached.

When binding the back filter material layer smaller than any surface to which the exhaust valve is attached among the bonding surfaces of the mask body, the back filter material layer can be formed with a diameter of about 1 cm or slightly larger than that of the ventilation hole in the case of a circular shape. The front and rear layer binding parts may be formed on the rim of the rear filter material layer, in the direction from the rim of the rear filter material layer to the exhaust valve vent, or at one or more places where the exhaust valve is attached, along the rim side of the rear filter material layer. It is also possible to seal by forming a line shape. At this time, even if the line shape is a dotted line shape, if the gap between the dotted lines is narrow, it can be called a line shape. It can be configured like this.

The borders of the layer ventilation holes 240 perforated in the front layer 2 (221) and the front layer 3 (222) are bound to each other, and the support plate fastening part 15 of the exhaust valve 150 is fastened to the fastened front side. .

The exhaust valve may be attached to the front side to which the layer ventilation hole 240 is attached, or a separate support plate for fixing the support plates 10 and 10-1 may be further provided on the rear side of the front layer ventilation hole to be inserted or connected to each other, Even at this time, the main function of the exhaust valve is to occur in the middle or front of the layer layer, and without a support plate, the support plate fastening part 15 of the exhaust valve is attached to the rear side of the layer ventilation hole 240, and exhaust through the layer ventilation hole It is also possible to have a valve flow part, or to form a thin valve with the same thickness as the layer, and even if it is not thin, it is possible to span the middle of the layer layer in which the ventilation hole is formed, and thus control the air flow in the layer ventilation hole. It is possible to bind the exhaust valve to one side of the layer appropriately, such as in the middle of the layer or the front side of the layer so as to be. In addition, the layer ventilation hole and the support plate ventilation hole of the exhaust valve can be formed and bound to match exactly, but for example, even if the layer ventilation hole is circular and the exhaust valve support plate is formed in a square shape, the circular support plate ventilation hole is the size and shape of the layer ventilation hole. Although the relationship is small even if it is not exactly matched, it is desirable if it is matched. At this time, the square exhaust valve can be bound to one side around the circular layer ventilation hole, and thus properly positioning the exhaust valve on one side around the layer ventilation hole is normal. It is possible to apply the technique. In addition, it is preferable that the exhaust valve is attached to the place where the edge of the layer ventilation hole is attached. At this time, when the exhaust valve is attached to the layer ventilation hole, it is also possible to have the edge of the layer ventilation hole attached at the same time. As a result, The rims of the layer ventilation holes and the rim of the exhaust valve or the rear side of the exhaust valve are bonded. In this way, the exhaust valve attached to one side of the vent hole of the front filter material layer, such as the exhaust valve attached to the edge to which the layer vent hole 240 of each layer is attached, can be implemented by applying a conventional technique.

When the exhaust valve is opened and fixed, only the filtering power of the rear layer is continuously applied during intake, so breathing resistance is reduced and convenience is improved when suddenly going outdoors or when the need to wear a mask is reduced.

In the present application, the respiratory side is the rear layer, the front side is the front layer, the front side to which the exhaust valve is attached is the front layer, and the rear side is referred to as the rear layer herein. In the present application, the face part 300, which is the respiratory side, is in the rear direction, and the front layers (220, 221, 222) are located in the front side of the rear layer 210 and are in the front direction.

Substances discharged during respiration, such as droplets, are discharged in a state of being filtered through a desired layer according to the layer to which the exhaust valve is attached. The rear layer 210 may be made of two layers, and in this case, the air filtered through the two layers is basically communicated through the ventilation hole.

When two or more exhaust valves are used, it is possible to selectively apply the air filtration force and air flow resistance in more detail, and it is possible to bind to different layers such as the third to fourth layers on the inner rear of the layer.

The support plate attachment part 15 is a place where the front layers are attached to the exhaust valve, and the support plate attachment part 15 binds the edges of the incised and removed layers at the support plate attachment part 15 to seal the layers so that air does not leak. It is also possible to hang it so as not to leak to fit the size of the ventilation hole, and it is also possible to bind to the base plate height (17). It is preferable that the perforated edge of the layers adhere to the front or rear side of the support plate fastening unit 15 so as to be overlapped, and the edge of the support plate may be the support board fastening unit. It is also possible to insert and cross the exhaust valve 150 at the rear of the incised layer ventilation holes and bind each other so that the layers do not swell.

In order to maintain the sealing power of the valve, the height of the support plate 16 allows the center side to be depressed in the horizontal direction or the lower side to protrude more than the upper side, so that the valve moving part 20 has a natural sealing force due to gravity in normal times. And, it is preferable to form it not high considering the operating distance of the valve.

If some or all of the ventilation holes are opened and closed, it is possible to adjust the air flow resistance or the protective force to a more desired level. Even if all the ventilation holes are opened, it may vary depending on the size of the ventilation holes, but the entire air may not flow through the exhaust valve. If it is small, more air can flow to the layer of filter media attached to the exhaust valve.

In view of this, it is possible for the user to set the amount of air flowing through the ventilation hole and the filter material layer by blocking the ventilation hole, partially opening it, opening a lot of it, or opening the whole of the ventilation hole.

If the ventilation hole of the exhaust valve is enlarged and the air flow rate is lowered, air may not flow through the mask filter material to which the exhaust valve is attached. can

The size of the exhaust valve is set in consideration of the fact that the narrowing of the filtration area of the mask can be reduced by forming the exhaust valve.

As shown in FIG. 4, by using one or more exhaust valves attached to one layer or two or more layers, the user can adjust the level of air flow resistance and protection, and the level of consideration of other people's contamination, such as droplet discharge, according to the situation. Therefore, it is possible to determine

If the exhaust valve passing through the entire layer of the mask has a large ventilation hole when the ventilation hole is opened, it is possible for intake and exhaust to pass through without air flow resistance, and it can be selected for very shortness of breath or smooth communication, At this time, it is preferable to form it on the lower side of the mask so that it is smoothly discharged from the front of the respirator and the droplet discharge is directed downward. It is preferable to use this as one of a plurality of manual open-flow openings and closings.

If the edge of the support plate is protruded forward to form a protrusion on the edge of the support plate, it is easy to use it as a support point when operating the valve moving part. It can be operated precisely and the mask layer can not be twisted, and can be manipulated more easily even when using two hands.

If the exhaust valve is attached to the front layer from the second front layer toward the front of the respiratory side of the multilayer layer, the filtering force is generated only in the front layer during exhaustion, so the discharge of droplets is reduced and the exhaust is facilitated, reducing the feeling of reluctance to wear a mask. It can be lowered, and during intake, the filtering power is generated in all layers of the mask, so the protective power of the mask is normally exhibited.

An exhaust valve is a conventional technology, and is an air flow control valve that includes a flexible flexible moving part that closes by itself during intake and opens by itself during exhaust according to air communication.

The valve flow part made of a flexible material of the exhaust valve can be manipulated by the user so that it does not close during intake and continues to open, or it can be operated so that it is closed during intake and opened during exhaust.

In order to continuously open the support plate ventilation hole 11 by keeping the flexible valve moving part of the exhaust valve apart from the support plate, the valve opening fixing part 50 rotatably attached to the valve support plate 10 is connected to the valve support plate 10 and the valve It may be inserted between the moving parts 20.

Alternatively, the upper valve opening fixing part 2 (50-2) of the valve moving part cover 30 is rotated with the valve opening fixing part 2-1 (50-2-1) and the hinge in a state where the top of the valve support plate is recessed backward If it is fastened properly, the upper part of the valve moving part 20 is pressed when the valve moving part cover is flipped upward, so that the lower part of the valve moving part 20 can be lifted.

Alternatively, a handle having a locking jaw formed on one side of the valve moving part in a protrusion, depression, zigzag shape, etc. protrudes forward to form a valve opening level setting unit 51-1, and in normal breathing, a valve opening level setting unit 51-1. 1) is flowed normally, but the valve opening level setting unit 51-1 is pulled forward and the valve opening level setting unit 51-1 is crossed at the place where the fine groove of the valve moving part cover 30 is formed. The degree of opening of the valve moving part 20 can be set according to which locking step the level setting part 51-1 is hung.

In this way, by forming the valve opening level setting parts (51, 51-1, 50-2, 51-3) so that the valve flow part is continuously separated from the support plate, the technical idea of setting whether or not the ventilation hole is open or the degree of opening is a feature of the present application However, the configuration for setting the opening or degree of opening of the ventilation hole is the same as this, and it is possible to apply similar conventional techniques, and by forming other valve flow cover ventilation holes at the bottom, the droplet discharge is directed downward, or the valve flow part To do this, press the upper part of the valve moving part toward the upper part of the valve moving part cover, or make the lower part project more forward than the upper part and make it inclined, or make the central part horizontal It can be formed in accordance with a normal exhaust valve, such as to be recessed toward the rear.

The valve opening fixing part can perform filtration with only the rear layer even during intake, and by setting the valve opening level setting part, air pollution and convenience, desired level of filtered air utilization, activity level/oxygen demand, size of ventilation hole, etc. to allow users to choose.

The shape of the valve support plate 10, the valve moving part 20, the valve moving part cover 30, and the components of the present application and the shape of each ventilation hole can be modified and technically applied even if they are circular, square, rectangular or other shapes.

The valve opening fixing parts (50, 50-1, 50-1-1, 50-2, 50-2-1, ) and the valve opening level setting parts (51, 51-1, 50-2, 51-3) are They operate organically, perform functions similar to each other, and can be used interchangeably. In addition, rectangular, circular, and similar exhaust valves can be used interchangeably in consideration of the purpose function, and the terminology of components can be mixed.

It is possible to apply the valve opening fixing part 50 of FIG. 1 to the circular exhaust valve 150-1 of FIG.

The rear layer is located behind the front layer to which the exhaust valve is attached, and each front and rear layer can be made of a plurality of layers.

The ventilation hole represents one or more of the support plate ventilation hole 11 and the moving part cover ventilation hole 31, and may be collectively referred to as a support plate, a moving part, and a moving part cover.

The layer support layer may be formed densely or very sparsely with a plastic structure that supports the shape of the mask between any mask layer, and may be formed with an ergonomic structure to block the respiratory tract so that it adheres well to the face and seals it. It can be made of synthetic resin, wire, lead wire, or shape-retaining material, and it is most preferable to form a thick filter material or a layer that is harder or thicker than other layers and placed at the rearmost side. It is also possible. If the exhaust valve is attached to the mask layer support, the exhaust valve can be positioned more firmly, and it is also possible to bind the exhaust valve together with the layers and the layer support. The layer support layer is preferably located on the rear layer side.

When the layer support layer is formed with a thick filter material or a layer that is harder or thicker than other layers and placed at the rearmost side, even if a thin and soft material is added to the rear side, it is fixed to the layer support layer so that it does not move to the rear side alone during breathing If so, it is only part of the layer support layer.

Where the exhaust valve is bound to the edge of the ventilation hole formed by penetrating the inner layer excluding the rearmost layer and the frontmost layer, and the exhaust valve is bound to the front and rear edges of the ventilation hole or to one side of the middle of the length of the exhaust valve body, That is, the exhaust valve is attached to one side of the ventilation hole of the inner layer layer. In this way, the exhaust valve may not be exposed from the inside and outside, and during inhalation breathing, the entire layer is filtered, and during exhaust breathing, at least two of the rearmost and foremost It is possible to filter by layer of open layer, and it is possible to reduce exhaust breathing resistance. Also, as an example, in a 5-ply layer mask, it is obvious that the inner layer means that exhaust valves are formed on three layers except for the rearmost or foremost layer, or that exhaust valves are formed on the inner layer over two layers of the inner layer. do. If the exhaust valve is placed on the inner layer and the exhaust valve is manually operated, the front layer covering the exhaust valve may form an open hole as an area for protruding the support plate holder 21-1 to the outside. .

It is possible to apply conventional technology so that the rear layer of the valve flow coupling can function unless the valve flow part has a very high degree of sealing, , it is easier to use in a mask equipped with a support rather than a thin and lightweight layer. If the valve moving parts are composed of sequentially stacked filter media, it is possible to apply the valve to a wider area of the mask layer, but the filtering power may be reduced than that of the valve moving parts made of silicon or rubber with good sealing power.

The support plate of the valve using the support plate of the mesh structure is higher in hardness or thicker than the valve floating coupling, so it is desirable to make it lighter with less bending than the valve floating coupling, and the support plate utilizes some area of the layer support layer It is also possible to do it, and since it is a conventional technique, there is no limitation in application to the present application.

If the valve flow part is used as a filter medium on the support plate with a network structure, the valve's blocking and opening ability is reduced and the leakage amount increases, but it is a method that can be used if you want to emphasize the convenience of production and use.

The front and rear filtering material layers can be expressed as all layers, and are the layer layers constituting the mask body.

In the present application, the layer is composed of a filter material, and, as in a conventional filtering face mask, some areas including junctions and seams may be made impermeable.

In addition, in the case of forming a ventilation hole in a partial area of an air-impermeable material such as silicon or rubber and providing filter media on the front and rear sides of the ventilation hole, it is within the scope of the present application if it is composed of a plurality of filter media, and at this time, a thick filter media layer or Even when a filter medium cartridge is used, it is referred to herein as a filter medium layer.

A filter medium layer herein may be referred to as a layer. Layer may be used in the meaning of “layer” in the dictionary meaning, and may mean a mask formed of multiple layers of filter media.

The layer ventilation holes 240 and the valve support plate ventilation holes 11 and 11-1 may be collectively referred to as ventilation holes.

Each layer of the filter material layer can be attached to each other, and can be expressed as binding adhesion, etc., and various methods including thermal bonding, ultrasonic bonding, high frequency bonding, and hot melt can be applied. Masks and exhaust valves can be thermally bonded, In addition to ultrasonic bonding and high-frequency bonding, it is also possible to cross it with friction, locking jaws, hinges, etc., and pressing and pressing after forming a locking jaw prevents it from coming off, or the protrusion formed on the surface that touches the layer of the support plate rotates by pressing the mask layer. It is also possible to position it firmly so that the flow is reduced, and as a common technique for binding the mask valve, it can be selectively used in consideration of sealing force and durability.

100 exhaust valve mask 130 exhaust valve
150 rectangular exhaust valve 150-1 circular exhaust valve
200 mask body 201 head joint
210 Back layer 1 211-1 Back layer 2
220 front layer 1 221 front layer 2
222 Front layer 3 230 Front and rear layer attachment part
240 layer ventilation hole 300 facial part
10 support plate 11 support plate ventilation hole
12 Valve floating part hanging part 15 Support plate fastening part
20 Valve moving part 21 Support plate hanging part
30 valve moving part cover 31 moving part cover ventilation hole
50 Valve opening fixing part 50-1 Valve opening fixing part 1
50-2 Valve opening fixing part 2 51 Valve opening level setting part
51-1 Valve opening level setting part 1 51-3 Valve opening level setting part 3
51-4 Valve opening level setting fitting

Claims (22)

In the mask having an exhaust valve on several layers of filter media from the rear respiratory side to the front, a mask body to which the rim is bound, and a head fastening part to the mask body,
The mask body includes a ventilation hole formed in the second layer from the respiratory side toward the front; Or a ventilation hole penetrating the front layer layers from the second layer from the respiratory side to the front side; a front filter material layer formed thereon; and,
an exhaust valve coupled to one side of the vent hole of the front filter material layer; and,
Including; a back filter material layer located on the rear side of the front filter material layer,
Part or the entire area of the front/back filter material layers are spaced apart from each other at a predetermined distance,
A front and rear layer fastening part is provided on one side of the central part of the mask body to reduce the backward movement of the rear layer alone during inhalation breathing,
An exhaust valve mask, characterized in that the air is filtered through the entire filter layer during inhalation breathing while wearing the mask, and the air flows through the rear filter material layer and mainly the exhaust valve during exhaust breathing. In the mask having an exhaust valve on several layers of filter media from the rear respiratory side to the front, a mask body to which the rim is bound, and a head fastening part to the mask body,
The mask body includes a ventilation hole formed in the second layer from the respiratory side toward the front; Or a ventilation hole penetrating the front layer layers from the second layer from the respiratory side to the front side; a front filter material layer formed thereon; and,
an exhaust valve coupled to one side of the vent hole of the front filter material layer; and,
Including; a rear filter material layer having an edge bound to the rear side of the front filter material layer,
Part or the entire area of the front/back filter material layers are spaced apart from each other at a predetermined distance,
The rear filter material layer is formed larger than the exhaust valve and smaller than the front filter material layer,
An exhaust valve mask, characterized in that the air is filtered through the entire filter layer during inhalation breathing while wearing the mask, and the air flows through the rear filter material layer and mainly the exhaust valve during exhaust breathing. According to claim 2,
The rear filter material layer has a front and rear layer binding part provided at one or more of the rims of the rear filter material layer in the direction toward the exhaust valve vent or at least one of the places where the exhaust valve is attached, so that the rear layer independently moves backward during inhalation breathing. Exhaust valve mask, characterized in that. The method of claim 3,
The exhaust valve mask, characterized in that the front and rear layer fastening portion is formed on the edge side of the rear filter material layer. delete According to claim 1 or 2,
The exhaust valve mask, characterized in that in the front / rear filter material layers spaced apart from each other, a part of the plate fastening portion of the exhaust valve forms a rear protrusion. According to claim 1 or 2,
The exhaust valve mask, characterized in that the front / back filter material layers spaced apart from each other face each other at least one part including at least one of twisted, wrinkled, embossed or protruded one or more of the front / back filter material layers. According to claim 1 or 2,
Exhaust valve mask, characterized in that between the front / back filter material layers spaced apart from each other, a fiber layer or a foaming agent is formed on at least one of the front / back filter material layers to face each other or as a separate layer layer. The method of claim 8,
The exhaust valve mask, characterized in that the entire area of the front / rear filter material layers is bonded to each other to form a front and rear layer bonding portion. The method of claim 8,
The exhaust valve mask, characterized in that the separation distance of the front / rear filter material layers is wider at the side closer to the exhaust valve and narrower at the far side. According to any one of claims 1 to 3,
The exhaust valve mask, characterized in that it comprises a valve opening fixing portion. The method of claim 11,
The valve opening fixing part of the exhaust valve further comprises a valve opening level setting part to set the degree of opening of the valve flow part on the support plate. According to any one of claims 1 to 3,
In the exhaust valve, the support plate hanging part 21-1 protruding toward the rear of the valve moving part is inserted into the valve moving part hanging part 12-1 and flows forward and backward by any one or more of friction, locking jaw, and screw type. By making it possible to position, if the support plate hanger is closely attached to the support plate, it functions as a normal exhaust valve, and if it is pulled out and placed at a predetermined distance from the support plate, it functions as a valve opening level setting unit, and if it is pulled out and placed more than this, the valve is opened Exhaust valve mask characterized in that the function of the fixing part. According to any one of claims 1 to 4,
Exhaust valve mask characterized in that the layer support layer is provided between any layer of the mask body filter material layer to support the shape of the mask layer or to strengthen the position of the exhaust valve. The method of claim 14,
The exhaust valve mask, characterized in that the layer support layer is a back filter material layer. According to any one of claims 1 to 4,
The exhaust valve mask is an exhaust valve mask, characterized in that the front filter material layer is a front layer from the third or fourth layer from the respiratory side to the front. According to any one of claims 1 to 4,
The exhaust valve mask, characterized in that provided with a plurality of exhaust valves. The method of claim 17,
The exhaust valve mask, characterized in that the plurality of exhaust valves are bound to different layers, respectively. According to any one of claims 1 to 4,
The exhaust valve mask, characterized in that the exhaust valve is provided in a second layer toward the rear of the most frontal layer from the second layer toward the front from the respiratory tract among three or more filter media layers. In the manufacturing method of the exhaust valve mask,
supplying the exhaust valve mask with a front filter material layer;
cutting the exhaust valve ventilation hole while the front filter material layer is bonded and cut into a shape;
binding an exhaust valve to an exhaust valve ventilation hole of the front filter material layer;
supplying a back filter material layer to the rear side of the front filter material layer;
In order to space the front/rear filter material layers apart from each other, the exhaust valve supplies an exhaust valve having a rear protrusion formed on a part of the support plate fastening part, or twists, wrinkles, embosses, or protrudes any one or more of the front/rear filter material layers. A layer is supplied, or a wadding or coarse fiber layer is included and supplied to the entire or predetermined area between the front / back filter material layers spaced apart from each other,
Exhaust characterized in that the rear filter material layer is cut and joined according to the shape of the front filter layer surface to which the exhaust valve is attached, and the front / rear layer binding part is formed so that the exhaust valve provided in the front filter material layer is covered by the rear filter material layer. Valve mask manufacturing method. The method of claim 20,
The exhaust valve mask manufacturing method, characterized in that the back filter material layer is supplied with a width longer than the width of the exhaust valve ventilation hole to cover the exhaust valve, and the front and rear layer fastening parts are formed and cut. The method of claim 20,
An exhaust valve mask manufacturing method characterized in that the step of supplying an exhaust valve to the exhaust valve vent hole of the front filter material layer layer and supplying the back filter material layer layer to the rear side of the front filter material layer layer is simultaneously performed and connected at the same time.

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