KR20230099024A - Mask and manufacturing method thereof - Google Patents

Abstract

A mask and a method for manufacturing the mask are provided. The mask includes a mask body that covers the user's mouth and nose when worn by the user, and straps connected to both sides of the mask body, and the mask body includes a first layer made of a fiber material including polyester, polyurethane or nylon, A second layer attached to one side of the first layer and composed of a material containing polypropylene, a second layer attached to one side of the second layer and composed of an expanded-polytetrafluoroethylene (ePTFE) membrane filter or a material containing graphene in a polypropylene material A third layer, a fourth layer attached to one side of the third layer and composed of a material containing polypropylene, and a fiber material attached to one side of the fourth layer and containing polyester, polyurethane or nylon, and silver (Ag) nano It includes a fifth layer composed of antibacterial yarns containing ingredients.

Description

Mask and its manufacturing method {MASK AND MANUFACTURING METHOD THEREOF}

The present invention relates to a mask for use in respiratory protection and a method for manufacturing the same.

Recently, various types of viral infectious diseases mediated by the human body, such as MERS, SARS, and Corona 19, are spreading, and some of these diseases are taking the lives of many people because there is no cure or vaccine. Recently, the infectious disease of Corona 19 has become a pandemic situation that becomes a global pandemic, and it has become a big problem worldwide. In the case of a highly contagious disease, the use of a mask is considered important to prevent infection by droplets from an infected person to others.

On the other hand, fine dust, ultrafine dust, yellow dust, etc. are intensifying due to recent industrialization and industrialization, and the use of masks is also considered important for respiratory protection of people.

Currently, many masks are manufactured for disposable use and are generally discarded after one use or discarded after one day of use. Recently, many people use masks on a daily basis, and the amount of discarded masks is rapidly increasing A discarded mask is generally incinerated, which causes another environmental pollution problem according to the generation of environmental pollutants generated by the incineration process.

Therefore, there is a need for a mask that can be reused several times or can prevent functional deterioration even when reused after washing with water, and has antibacterial functions while blocking droplets and fine dust.

Republic of Korea Registered Utility Model Publication No. 20-0492737

Therefore, the problem to be solved by the present invention is to provide a mask that can be reused several times, has high droplet blocking efficiency, and can maximize blocking of fine dust, yellow dust, etc., and a manufacturing method thereof.

In addition, it is to provide a mask having excellent air permeability and having an antibacterial function and a manufacturing method thereof.

In addition, it is to provide a mask and a manufacturing method thereof capable of minimizing performance deterioration even when the mask is washed and reused.

In addition, in manufacturing the above mask, it is to provide a mask manufacturing method with easy processability and mass production.

The tasks of the present invention are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those skilled in the art from the following description.

A mask according to an embodiment of the present invention for solving the above problems includes a mask body covering the user's mouth and nose when worn by a user, and wearing straps connected to both sides of the mask body, and the mask body is poly A first layer composed of a fiber material containing ester, polyurethane, or nylon, a second layer attached to one surface of the first layer and composed of a material containing polypropylene, and attached to one surface of the second layer, ePTFE (expanded -polytetrafluoroethylene) Membrane filter or a third layer composed of a material containing graphene on a polypropylene material, a fourth layer attached to one surface of the third layer and composed of a material containing polypropylene, and one surface of the fourth layer and a fifth layer composed of a fiber material including polyester, polyurethane or nylon and an antibacterial yarn containing silver (Ag) nano-components. do.

In addition, the fifth layer may be characterized in that it is woven to include a depression of a specific pattern on the surface of the fiber material.

In addition, the fifth layer may be characterized in that it is woven to include a pattern formed as a depression on the surface of the polyester fiber material.

In addition, when the third layer is composed of a material containing graphene in a polypropylene material, the polypropylene is in the range of 90% to 94% by weight and the graphene among the total constituting the third layer 200 It is included in the range of 3% by weight to 5% by weight, and may be characterized by including the remaining amount of other additives.

In addition, a water-repellent layer containing an antibacterial metal containing zinc oxide may be formed on the other surface of the first layer.

In addition, the first layer may include a water repellent component.

In addition, the second layer and the fourth layer may be characterized in that nonwoven fabric formed of polypropylene.

In addition, it may be characterized in that it further includes a seating portion attached to one surface of the fifth layer, formed to face the user's nose, and made of a sponge.

In addition, the first layer and the second layer are bonded by a hot melt method to form a first structure, and the third to fifth layers are bonded by a hot melt method to form a second structure. The structure and the second structure may be characterized in that they are bonded between the second layer and the third layer by ultrasonic welding.

A mask manufacturing method according to an embodiment of the present invention for solving the above problems is a mask manufacturing method comprising a mask body covering the user's mouth and nose when worn by a user and a wearing strap connected to both sides of the mask body. A first layer composed of a fiber material including polyester, polyurethane or nylon, and a second layer composed of a material containing polypropylene are bonded to one side of the first layer by a hot melt method to form a first structure Step, a third layer composed of an expanded-polytetrafluoroethylene (ePTFE) membrane filter or a material containing graphene in a polypropylene material, a fourth layer formed on one side of the third layer and composed of a material containing polypropylene, and the A fifth layer formed on one side of the fourth layer and composed of a fiber material including polyester, polyurethane or nylon and an antibacterial yarn containing silver (Ag) nano components is adhered by a hot melt method to form a second structure. and bonding the first structure and the second structure by ultrasonic welding so that one surface of the second layer and the other surface of the third layer are bonded.

In addition, after the step of forming the first structure, a step of forming a surface water repellent layer by applying an antimicrobial metal containing zinc oxide in a water repellent mixture to the other surface of the first layer of the first structure is further performed. It may be characterized by including.

In addition, the forming of the first structure may be performed by coating an adhesive component including a crosslinking agent between the first layer and the second layer, and then bonding the first layer to the second layer by a hot melt method.

In addition, the fifth layer may be characterized in that it is woven to include a pattern formed as a depression on the surface of the polyester fiber material.

In addition, when the third layer is composed of a material containing graphene in a polypropylene material, the polypropylene is in the range of 90% to 94% by weight and the graphene among the total constituting the third layer 200 It is included in the range of 3% by weight to 5% by weight, and may be characterized by including the remaining amount of other additives.

Details of other embodiments are included in the detailed description and drawings.

According to the embodiments of the present invention, at least the following effects are provided.

The mask manufacturing method according to the present invention and the mask manufactured thereby can be reused several times, have high droplet blocking efficiency, and can maximize blocking of fine dust, yellow dust, and the like.

In addition, the mask manufacturing method according to the present invention and the mask manufactured by the method have excellent air permeability and have an antibacterial function, so that bacteria or viruses can disappear when they come into contact with the mask.

In addition, the mask manufacturing method and the mask manufactured by the method according to the present invention can minimize performance degradation even when the mask is washed and reused.

In addition, according to the mask manufacturing method according to the present invention, it is possible to facilitate processability and mass production while enabling reuse while combining antibacterial functions.

Effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a schematic perspective view of a mask according to an embodiment of the present invention.
2 is a schematic exploded perspective view of a mask body portion of the mask of FIG. 1;
3 is a cross-sectional view schematically illustrating a cross section of the mask of FIG. 1 .
4 is a cross-sectional view schematically illustrating a part of a process of manufacturing the mask of FIG. 1 .
Figure 5 is a photograph of the results of the control group for measuring the bacteriostatic reduction rate using ATCC 6538 Staphylococcus aureus in Experimental Example 3.
6 is a photograph of the result of applying the graphene filter of the present invention for measuring the bacteriostatic reduction rate using ATCC 6538 Staphylococcus aureus in Experimental Example 3.
Figure 7 is a photograph of the results of the control group for measuring the bacteriostatic reduction rate using ATCC 4352 pneumococci in Experimental Example 3.
8 is a photograph of the result of applying the graphene filter of the present invention for measuring the bacteriostatic reduction rate using ATCC 4352 pneumococcus in Experimental Example 3.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of explanation.

The spatially relative terms "below", "beneath", "lower", "above", "upper", etc. are different from one element or component to another. It can be used to easily describe the correlation with elements or components. In addition, in the present specification, "one side" means a side spatially in one direction, and "the other side" may mean a side spatially opposite to the "one side", but they are also one element or component. It can be used to easily describe the correlation between and other elements or components.

Although first, second, etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may also be the second component within the technical spirit of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic perspective view of a mask according to an embodiment of the present invention, and FIG. 2 is a schematic exploded perspective view of a mask body portion of the mask of FIG. 1 .

1 and 2, the mask according to an embodiment of the present invention includes a mask body 1 covering the user's mouth and nose when worn by a user, and a strap connected to both sides of the mask body 1 ( 2), wherein the mask body 1 includes a first layer 100 composed of a fiber material including polyester, polyurethane, or nylon, attached to one surface of the first layer 100 and containing polypropylene A second layer 200 composed of a material that is attached to one surface of the second layer 200 and a third layer 120 composed of an expanded-polytetrafluoroethylene (ePTFE) membrane filter or a material containing graphene in a polypropylene material. , the fourth layer 300 attached to one surface of the third layer 120 and composed of a material containing polypropylene, and attached to one surface of the fourth layer 300 and containing polyester, polyurethane or nylon and a fifth layer 500 made of an antibacterial yarn containing a fiber material and silver (Ag) nano-component.

The mask body 1 covers the nose and mouth of the mask user to block and filter droplets, dust, yellow dust, etc. transmitted from the outside, and the strap 2 is connected to both sides of the mask body 1 It can be hung on the user's ears so that the mask body 1 is maintained while covering the user's nose and mouth.

On the other hand, it may be characterized in that it further includes a seating portion 30 attached to one surface of the fifth layer 500 without limitation, formed to face the user's nose, and composed of a sponge. Accordingly, the mask user can more conveniently wear the mask for a long time, and it is possible to prevent the mask body 1 from being separated to another location. Without limitation, the mounting portion 30 may be separated and coupled to the mask body 1 separately. Therefore, the user of the mask can select and use the mounting portion 30 as desired by combining or separating the mounting portion 30 .

On the other hand, the mask of the present invention is formed of five layers as described above, so that it can be reused several times while increasing the droplet blocking efficiency, maximizing blocking or filtering fine dust, yellow dust, etc., and reducing performance even when reused. can be minimized.

Meanwhile, the first to fifth layers 100 to 500 are terms meaning each filter or fiber cotton constituting the mask body 1, and for convenience of description, the first to fifth layers and Described in the same way, it will be understood that the mask body 1 is constituted and composed of a surface.

The first layer 100 may be a fiber material including polyester, polyurethane, or nylon. Since the first layer 100 is formed of a fiber material including polyester, polyurethane, or nylon, the shape of the mask can be maintained even if the mask is washed and reused, and is formed of a fiber material. By doing so, water-repellent treatment and zinc oxide antibacterial treatment, which will be described later, may be possible. In the case of a single-layer mask made of polypropylene non-woven fabric, which will be described later, it is difficult to reuse after washing, and it is difficult to treat antibacterial and water repellent treatment on the surface, so it has no choice but to perform only a filter function. By using the first layer 100, water-repellent treatment and antibacterial treatment can be performed on the surface, and reuse after washing can be possible.

The second layer 200 may be a nonwoven fabric attached to one surface of the first layer 100 and made of a material including polypropylene. Since the first layer 100 is formed of a fiber material, it may be difficult to mass-produce in mask processing due to the elasticity of the material itself and the tension that easily stretches. It can maintain its own rigidity. Accordingly, it is possible to enable mass production in mask processing. That is, by combining the second layer 200 made of a non-woven fabric material that is rigid and does not stretch easily with the first layer 100 made of a fiber material that is easily stretched, it is possible to mechanically mass-produce the mask. For example, in the case of mass production of masks, when processing using a machine, the filter surface constituting the mask body is machined on both sides or at the edge, and then combined with other components. When combined with other components, the first When using only a filter composed of fibers, such as the layer 100, mechanical processing may be difficult due to the property of being easily stretched. 100) can be mechanically mass-produced by complementing it so that it does not stretch easily.

In addition, by combining the second layer 200 and the first layer 100, it is possible to very effectively prevent the mask from being stretched and deformed when the mask is used or washed and reused.

The third layer 300 may be composed of an expanded-polytetrafluoroethylene (ePTFE) membrane filter attached to one surface of the second layer 200 and formed with nano-sized pores or a material containing graphene in a polypropylene material. . The ePTFE (expanded-polytetrafluoroethylene) membrane filter has pores of nano size to block fine dust or yellow dust, while ensuring excellent air permeability so that the user does not have any discomfort in breathing. . In addition, in the case of an expanded-polytetrafluoroethylene (ePTFE) membrane filter, the structure does not change even if the mask is washed, so performance degradation such as blocking droplets, blocking fine dust or yellow dust can be minimized even when reused after washing.

In addition, the third layer 200 may be composed of polypropylene and a material including a graphene material in the polypropylene. For example, 88% of the polypropylene among the total constituting the third layer 200 % to 96% by weight or in the range of 90% to 94% by weight. In addition, the graphene may be included in the range of 2 wt% to 12 wt%, 3 wt% to 10 wt%, or 3 wt% to 5 wt%. For example, the third layer 200 may include the polypropylene in the range of 90% to 94% by weight and the graphene in the range of 3% to 5% by weight, and the remaining amount of other additives. can include The other additives may be dyes, colorants, or master batches. The third layer 300 includes a graphene material and can suppress the propagation of microorganisms such as bacteria to have an antibacterial action, and can have an antibacterial action while being harmless to the human body within the range of the graphene content.

Meanwhile, the fourth layer 400 may be a nonwoven fabric attached to one surface of the third layer 300 and made of a material containing polypropylene like the second layer 200 . The fourth layer 400 performs a function of securing rigidity of the third layer 300 and the fifth layer 500 by being interposed and bonded between the third layer 300 and the fifth layer 500. can do. In the case of the third layer 300 and the fifth layer 500, mass production may not be easy due to the property of being easily stretchable. It can be suitable for mass production using a machine, and the shape of the mask is not deformed even when the mask is washed and reused, and it can be used without deteriorating performance even when used several times.

The fifth layer 500 is attached to one surface of the fourth layer 400 and includes a fiber material including polyester, polyurethane, or nylon, and a silver (Ag) nano component. It may be composed of an antibacterial yarn. For example, the yarn constituting the fiber material itself may be coated with silver (Ag) nano-components, and thus may have an antibacterial action. In the case of the fifth layer 500, it is a part that directly contacts the user's mouth and nose. As described above, the fiber yarn constituting the fifth layer 500 is coated with antibacterial silver (Ag) nano, It can remove bad breath. Therefore, even when the user wears the mask for a long time, it is possible to use the mask without discomfort.

In addition, the fifth layer 500, for example, may be characterized in that it is woven to include depressions of a specific pattern on the surface of the fiber material, for example, depressions on the surface of the polyester fiber material. It may be woven to include a formed pattern. It is woven to include a pattern formed of depressions on the surface of the polyester fiber material to improve ventilation, thereby reducing frictional force when rubbing against the user's face and providing a cooling effect to the user's face, making the mask It is possible to make the wearer feel a cool feeling. When the user wears the mask for a long time in hot weather such as summer, the breathing between the mask and the user's face may cause sweating or stuffiness. By weaving, it is possible to improve air permeability to feel more refreshing, and to give a cooling effect to feel cool.

On the other hand, the first layer 100 may be characterized by including a water-repellent component within the first layer 100 itself. Accordingly, even if the droplet transmitted from the outside touches the surface of the mask, it can be naturally scattered and bounced to the outside.

In addition, a water repellent layer containing an antibacterial metal containing zinc oxide may be formed on the other surface of the first layer 100 . That is, the other surface of the first layer 100 can be understood as the outermost surface based on the user, and the droplets transmitted from the outside by the water-repellent layer contact the surface of the mask body 1 and bounce off naturally. there is. In addition, antibacterial action can be performed by the zinc oxide included in the water-repellent layer, so that when other people's droplets come into contact with the other surface of the first layer 100, they can be naturally killed. In the case of the present invention, the first layer 100, which is the outermost layer, is formed of a fiber material, so that it is easy to form a water-repellent layer containing zinc oxide, and the water-repellent layer allows other people's droplets to naturally bounce to the outside while remaining It is possible to kill viruses and the like in droplets by antibacterial action. In addition, as described above, by indirectly securing the rigidity of the first layer 100 by the second layer 200, even if the mask is used for a long time or reused after washing, the shape of the mask is not deformed and used for a long time. can do.

Meanwhile, FIG. 3 is a cross-sectional view schematically illustrating a cross-section of the mask of FIG. 1 , and FIG. 4 is a cross-sectional view schematically illustrating a part of a process of manufacturing the mask of FIG. 1 .

3 and 4, in the mask of the present invention, the first layer 100 and the second layer 200 are bonded by a hot melt method to form a first structure, and the third layer 120 to The fifth layer 500 may be bonded by a hot melt method to form a second structure. That is, the first layer 100 and the second layer 200 are bonded with a hot melt adhesive therebetween, and the third layer 30, the fourth layer 400 and the fifth layer 500 are also bonded with the hot melt adhesive. It is bonded via a medium to form the first structure and the second structure, respectively. However, it is not limited thereto, and an adhesive method using a separate adhesive may be used. In addition, the first structure and the second structure may be characterized in that they are bonded between the second layer 200 and the third layer 120 by ultrasonic welding. That is, there is no separate medium like the hot melt method, but it may be bonded by ultrasonic welding.

In the first structure, the first layer 100 and the second layer 200 may be bonded via a hot melt adhesive. The first layer 100 is formed of a fiber material and the second layer 200 is formed of a non-woven fabric material to perform complementary functions as described above. there is. When the first layer 100 and the second layer 200 are formed of different materials, bonding by other methods such as ultrasonic welding may be difficult. In the present invention, by performing the bonding between them by a hot melt method, It is possible to produce a mask suitable for mass production without causing deterioration in the function of the mask.

That is, the first layer 100 is formed of a fibrous material and is capable of water repellent treatment and antibacterial treatment of zinc oxide, while having a property of being easily stretched, while the second layer 200 functions as a mask during water repellent treatment and antibacterial treatment. Since it is difficult to perform but has a property that does not stretch easily, the first layer 100 and the second layer 200 perform mutually complementary functions, so that the combination is strong without causing degradation of the mask by combining them. It can be done, and mask products can be easily mass-produced.

Also, in the second structure, the third layer 300, the fourth layer 400, and the fifth layer 500 may be bonded via a hot melt adhesive. As described above, the function of the mask filter performed by the nanopores of the third layer (300) and the fiber material of the fifth layer (500) allow the yarn itself to be coated with silver (Ag) nano components. Accordingly, it is possible to have an antibacterial action, and it is possible to supplement the easily stretchable property of the third layer 300 and the fifth layer 500 by interposing the fourth layer 400 therebetween. In addition, in order to combine each layer that performs each function with different materials, such as the first layer 100 and the second layer 200, the bonding between them can be performed by a hot melt method.

In addition, the first structure and the second structure may be bonded through ultrasonic fusion between the second layer 200 and the third layer 300 facing each other. By combining the first structure and the second structure, which form structures with each other, by an ultrasonic welding method rather than a sewing method, mass production can be more easily performed. Accordingly, in the case of the mask body of the present invention, although it performs several functions and has a multi-layered structure composed of different materials, the coupling between each layer is strong and can be very easy for mechanical mass production.

Conventionally, ultrasonic processing method, processing method using only adhesive, or method using sewing were generally adopted. Durability can be maximized by ensuring that the final product is firmly maintained without falling off between each layer. In addition, through the sequential combination of several layers performing each function, it is possible to reuse the mask several times after washing it while performing various functions such as water repellency, antibacterial, fine dust filtering, and odor removal from the user. Therefore, it is possible to minimize environmental pollution compared to disposable masks that are discarded after being used for one time.

Meanwhile, the present invention provides a mask manufacturing method for manufacturing the above mask, and hereinafter, a mask manufacturing method according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4 again.

A mask manufacturing method according to an embodiment of the present invention is a mask manufacturing method comprising a mask body covering the user's mouth and nose when worn by a user and a wearing strap connected to both sides of the mask body, polyester A first layer 100 made of a fiber material containing polyurethane or nylon, and a second layer 200 made of a material containing polypropylene on one side of the first layer 100 Forming a first structure by bonding by hot melt method, a third layer 300 composed of an ePTFE membrane filter or a material containing graphene in a polypropylene material, formed on one side of the third layer 300, and polypropylene A fourth layer 400 made of a material containing propylene, and a fiber material formed on one side of the fourth layer 400 and containing polyester, polyurethane, or nylon, and silver Forming a second structure by attaching a fifth layer 500 composed of antibacterial yarn containing (Ag) nano components by a hot melt method, and combining the first structure and the second structure with the second layer 200 ) and the step of bonding by ultrasonic fusion so that one side of the third layer 300 is bonded.

The step of forming the first structure includes a first layer 100 composed of a fiber material including polyester, polyurethane, or nylon, and a polypropylene layer 100 on one side of the first layer 100. It is performed by bonding the second layer 200 made of a material containing propylene by a hot melt method.

As described in the mask, since the first layer 100 is formed of a fiber material including polyester, polyurethane, or nylon, the shape of the mask can be maintained even if the mask is washed and reused. It can be maintained, and by being formed of a fiber material, water-repellent treatment and zinc oxide antibacterial treatment may be possible. In addition, in the case of a single-layer mask made of polypropylene non-woven fabric, it is difficult to reuse after washing, and it is difficult to treat antibacterial and water repellent treatment on the surface, so it has no choice but to perform only a filter function. By using the first layer 100, water-repellent treatment and antibacterial treatment can be performed on the surface, and reuse after washing can be possible.

In addition, the second layer 200 may be a nonwoven fabric attached to one surface of the first layer 100 and made of a material containing polypropylene. Since the first layer 100 is formed of a fiber material, it may be difficult to mass-produce in mask processing due to the elasticity of the material itself and the tension that easily stretches. It can maintain its own rigidity. Accordingly, it is possible to enable mass production in mask processing. That is, by combining the second layer 200 made of a non-woven fabric material that is rigid and does not stretch easily with the first layer 100 made of a fiber material that is easily stretched, it is possible to mechanically mass-produce the mask. That is, as in the present invention, mechanical mass production can be made possible by complementing the second layer 200 composed of nonwoven fabric so that the first layer 100 coupled thereto is not easily stretched.

The first structure is performed by a hot melt method. The first layer 100 is formed of a fiber material and the second layer 200 is formed of a non-woven fabric material to perform complementary functions, which are complementary to each other. Since it is formed of a material, it is preferable to bond by a hot melt method for stronger adhesion. Therefore, by performing bonding (or bonding) by such a hot melt method, it is possible to produce a mask suitable for mass production without causing deterioration in the function of the mask.

That is, the first layer 100 is formed of a fibrous material and is capable of water repellent treatment and antibacterial treatment of zinc oxide, while having a property of being easily stretched, while the second layer 200 functions as a mask during water repellent treatment and antibacterial treatment. Although difficult to perform, since they do not stretch easily, the first layer 100 and the second layer 200 perform complementary functions to each other, and combining them by a hot melt method does not cause deterioration in the performance of the mask. This can be made robust, and it is possible to easily produce mask products for mass production.

On the other hand, the step of forming the second structure includes a third layer 300 composed of an ePTFE membrane filter, a fourth layer 400 formed on one side of the third layer 300 and composed of a material containing polypropylene, And a fifth layer formed on one surface of the fourth layer 400 and composed of a fiber material including polyester, polyurethane, or nylon, and antibacterial yarn containing silver (Ag) nano components. It is performed by bonding the layer 500 by a hot melt method.

As described in the mask, the third layer 300 is attached to one surface of the second layer 200 and is composed of an expanded-polytetrafluoroethylene (ePTFE) membrane filter or a graphene filter in which nano-sized pores are formed, The ePTFE (expanded-polytetrafluoroethylene) membrane filter has pores of nano size to block fine dust or yellow dust, while ensuring excellent air permeability so that the user does not have any discomfort in breathing. . In addition, in the case of an expanded-polytetrafluoroethylene (ePTFE) membrane filter, the structure does not change even if the mask is washed, so performance degradation such as blocking droplets, blocking fine dust or yellow dust can be minimized even when reused after washing.

In addition, the third layer 200 may be composed of polypropylene and a material including a graphene material in the polypropylene. For example, 88% of the polypropylene among the total constituting the third layer 200 % to 96% by weight or in the range of 90% to 94% by weight. In addition, the graphene may be included in the range of 2 wt% to 12 wt%, 3 wt% to 10 wt%, or 3 wt% to 5 wt%. For example, the third layer 200 may include the polypropylene in the range of 90% to 94% by weight and the graphene in the range of 3% to 5% by weight, and the remaining amount of other additives. can include The other additives may be dyes, colorants, or master batches.

The third layer 300 may impart an antibacterial function by including a graphene material. That is, as confirmed in the following experimental example, since the third layer 300 of the present invention includes a graphene material, it is possible to suppress the propagation of microorganisms such as bacteria to have an antibacterial action, and the content range of graphene is limited. By being included in the third layer 300, it is possible to have an antibacterial action while being harmless to the human body.

The third layer 300 can be made of a melt blown filter (MB filter), which is a manufacturing method of melting a polymer material including polypropylene and extruding and spinning through a nozzle, and can manufacture a melt blown filter. When it can be manufactured by further including a graphene material to the polypropylene material.

On the other hand, as a specific method of manufacturing the third layer 300, preparing a pellet material including polypropylene and a raw material including a graphene material, spraying the raw material, corona discharge after the spraying step and winding the manufactured filter. As described above, the step of manufacturing the third layer 300 may be manufactured by a melt blown filter (MB filter), which is a manufacturing method of extruding and spinning through a nozzle, but is not limited to, the raw material The preparing step may further include other additives such as dyes, colorants, master batches, and the like, and may further include preparing and coloring raw materials when a colorant is included. In addition, a step of sorting out defective products and good products after winding the filter, measuring the weight, and measuring the fraction collection efficiency may be included.

In addition, the fourth layer 400 is attached to one surface of the third layer 300 and, like the second layer 200, may be a nonwoven fabric composed of a material containing polypropylene. The fourth layer 400 may perform a function of securing rigidity of the third layer 300 and the fifth layer 500 . In the case of the third layer 300 and the fifth layer 500, mass production may not be easy due to their easily stretchable properties, so by combining and processing the fourth layer 400 of a non-woven fabric material that does not easily stretch, It can be suitable for mass production, and the shape of the mask is not deformed even when the mask is washed and reused, and it can be used without deteriorating performance even when used several times.

In addition, the fifth layer 500 is attached to one surface of the fourth layer 400, and a fiber material including polyester, polyurethane or nylon and silver (Ag) nano component It may be composed of an antibacterial yarn containing a. In addition, the fifth layer 500, for example, may be characterized in that it is woven to include depressions of a specific pattern on the surface of the fiber material, for example, depressions on the surface of the polyester fiber material. It may be woven to include a formed pattern. The fifth layer 500 is woven to include a pattern formed of depressions on the surface of the polyester fiber material to improve ventilation, thereby reducing frictional force when rubbing against the user's face and cooling the user's face. It can give a cool feeling to the user wearing the mask. When the user wears the mask for a long time in hot weather such as summer, the breathing between the mask and the user's face may cause sweating or stuffiness. By weaving, it is possible to improve air permeability to feel more refreshing, and to give a cooling effect to feel cool. The fifth layer 500 may be woven such that a plurality of identical patterns are disposed spaced apart from each other in the concave portion of the specific pattern.

In addition, the yarn constituting the fiber material itself may be coated with silver (Ag) nano-components, and thus, it may have an antibacterial action, thereby removing bad breath from the user's mouth. Even if you wear a mask for a long time, you can use it without discomfort.

In the step of forming the second structure, the third layer 300, the fourth layer 400, and the fifth layer 500 may be bonded via a hot melt adhesive. (120), the fourth layer 300, and the fifth layer 500 are preferably bonded by a hot melt method in order to be suitably combined for mass production while firmly bonding. As described above, the third layer 300 performs the function of a mask filter performed by nanopores, and the fifth layer 500 is formed of a fiber material, so that the yarn itself is coated with silver (Ag) nano components This is possible, and thus antibacterial action can be performed, and the fourth layer 400 can supplement the easily stretchable properties of the third layer 300 and the fifth layer 500, and each function is made of different materials. It is preferable to perform the bonding between them by a hot melt method in order to combine each layer that performs the.

Next, a step of bonding the first structure and the second structure by ultrasonic fusion so that one surface of the second layer 200 and the other surface of the third layer 300 are bonded. After combining the first structure and the second structure by the hot melt method, the surfaces facing each structure are the second layer 200 and the third layer 300, and the bonding between them forms a multi-layer through ultrasonic fusion. The first structure and the second structure can be easily combined. Accordingly, in the case of the mask body of the present invention, although it performs various functions and has a multi-layered structure composed of different materials, it is possible to make the coupling between each layer very easy for mechanical mass production while being strong. That is, in the case of the present invention, by changing the bonding method according to the characteristics of each layer, it is possible to maximize durability by ensuring that the final product is firmly maintained without falling off between each layer while facilitating mechanical mass production.

Meanwhile, the bonding by ultrasonic welding is performed after forming the first structure and the second structure, but the forming of the first structure and the forming of the second structure are performed in a different order or at the same time. can be performed

On the other hand, after the step of forming the first structure, an antimicrobial metal containing zinc oxide is mixed with a water repellent and applied to the other surface of the first layer 100 of the first structure to form a surface water repellent layer. It may be characterized in that it further comprises a step. By forming a water-repellent layer on the other surface of the first layer 100 present on the outermost surface of the mask, droplets transmitted from the outside can be scattered and bounced after contacting the surface of the other surface of the first layer 100, Even if it remains on the surface of the other surface of the first layer 100, it can be naturally and quickly killed by the antibacterial action of zinc oxide included in the water repellent layer. The zinc oxide may be applied after being mixed with a liquid water repellent for uniform application. In the case of general non-woven fabrics, it is difficult to apply water repellent treatment or zinc oxide. In the case of the present invention, the first layer 100 is composed of a fiber material including polyester, polyurethane or nylon, It is possible to apply water repellent treatment and zinc oxide such as, so that it can perform excellent blocking of droplets and antibacterial action.

On the other hand, in the step of forming the first structure, an adhesive component containing a crosslinking agent is coated between the first layer 100 and the second layer 200, and then adhesion is performed by a hot melt method. can In addition, in the step of forming the second structure, an adhesive component including a crosslinking agent is applied between the third layer 300 and the fourth layer 400 and between the fourth layer 400 and the fifth layer 500. It may be characterized in that adhesion is performed by a hot melt method after coating. The composition used in the hot melt adhesive method may use an adhesive component widely known in the art, and a detailed description thereof will be omitted.

In the case of using ultrasonic welding in forming the first and second structures, the bonding may not be precise or the bonding may not be well depending on the characteristics of each structure (elasticity difference, etc.). By bonding by means of, the respective structures can be firmly bonded, thereby improving durability and minimizing performance degradation during the bonding process of the respective structures. In addition, the bonding between the first structure and the second structure already forms the structure and secures the solidity by the second layer 200 and the fourth layer 400, so that sophisticated and robust bonding can be performed through ultrasonic fusion. . Therefore, it is possible to firmly couple the first structure and the second structure while enabling mechanical mass production. That is, in combining the first structure and the second structure of the present invention, each structure is already relatively strong (by offsetting the elongation property) by the second layer 200 and the fourth layer 400, so that a large amount of Ultrasonic welding in a production method can also be combined precisely and with excellent adhesive strength.

comparative experiment data

According to the method of the present invention, a mask was manufactured in which the first to fifth layers were sequentially combined while the third layer was composed of ePTFE. After that, performance comparison was performed with commercially available masks, and the results are shown in the table below.

division mask of the present invention medical mask Textile (cotton) mask antibacterial fiber mask AD KF80 KF94 Fine dust, yellow dust blocking function the best under award the best functionX functionX Droplet blocking function the best award award award functionX functionX filter Nacl
(Collection and collection efficiency) 93% 85% 90% 97% functionX functionX Paraffin (Oil) 96% 84% 85% 97% functionX functionX water repellency the best award middle award under under antibacterial performance the best functionX functionX functionX functionX award breathability award award middle under the best middle Air permeability Inspiratory resistance (pa) 31 34 40 47 16 35 reusability 30 to 50 times 1 time 1 time 1 time unlimited unlimited

As shown in Table 1 above, in the case of the mask of the present invention, compared to other masks on the market, the function of blocking fine dust, yellow dust, and splashes, and the function of the filter are the best, and the water repellency and antibacterial performance are the best, and the breathability is very good and reuse It can be confirmed that this is possible 30 to 50 times. In addition, the mask of the present invention can be reused while performing the above functions, and mechanical mass production is possible.

Experimental Example 1

Like the third layer of the present invention, a graphene-containing filter (third layer) was prepared by using a melt blown manufacturing method to contain 95% by weight of polypropylene material and 5% by weight of graphene in the total . The face intake resistance and fraction collection efficiency were measured using a filter containing graphene material, and the results are shown in Table 2 below. In Table 2, the face air intake resistance was measured by measuring the differential pressure (Pa) when the face of the test filter was worn closely so that air did not leak without being deformed, and then air was passed at a continuous flow rate of 30 L per minute. The average value of the numbers was derived. In addition, the collection efficiency was measured by putting the filter into the collection efficiency test equipment and passing sodium chloride aerosol and paraffin oil mist through the face at a flow rate of 32 L per minute, and then measuring the concentration before and after passing the face at 3 minutes after the start of the test. The measured value at this time was the average value obtained by measuring for 30 ± 3 seconds, and the average value of the values measured three times was derived.

division Result value (average value) Facial inhalational resistance (pa) 13.56pa Particle collection efficiency (%) Nacl
(Collection and collection efficiency) 92.317 Paraffin (Oil) 98.983

As the above measured values, it can be confirmed that the graphene filter of the present invention has an excellent fraction collection efficiency and a low face intake resistance. Therefore, it can be confirmed that even when the graphene filter is applied, it is possible to facilitate breathing by having a low inspiratory resistance while having a high level of fractionation and collection efficiency.

Experimental Example 2

According to the method of the present invention, a mask was manufactured in which the first to fifth layers were sequentially combined while the third layer was composed of a filter to which graphene was applied as in Experimental Example 1. After that, the fraction collection efficiency was measured according to the number of washings, and the results are shown in Table 3 below. The number of washing was performed 0 times, 5 times, and 10 times, and each value was measured 3 times.

number of washing division 1 measurement 2 measurements 3 measurements medium No. 0 Particle collection efficiency (%) Paraffin (Oil) 91.274 89.226 89.363 89.954 Particle collection efficiency (%) Nacl
(Collection and collection efficiency) 95.554 86.5553 88.135 90.081 number 5 Particle collection efficiency (%) Paraffin (Oil) 93.282 93.854 91.396 92.844 Particle collection efficiency (%) Nacl
(Collection and collection efficiency) 94.809 91.541 91.267 92.539 No. 10 Particle collection efficiency (%) Paraffin (Oil) 88.273 91.385 92.485 90.714 Particle collection efficiency (%) Nacl
(Collection and collection efficiency) 91.778 86.134 85.528 87.813

As shown in Table 3, it can be confirmed that even when the third layer to which the graphene of the present invention is applied is applied, it has an excellent level of collection efficiency.

Experimental Example 3

Like the third layer of the present invention, a graphene-containing filter (third layer) was prepared by using a melt blown manufacturing method to contain 95% by weight of polypropylene material and 5% by weight of graphene. An antibacterial test was conducted to determine whether or not an antibacterial action was performed using a filter containing graphene material.

The experiment was carried out according to the method of Korean Industrial Standard KS K0693: 2011, and the product using the graphene filter and the control specimen were inoculated with the test bacteria, and the number of viable cells was measured after culturing, and the bacteriostatic reduction rate (%) was compared. A control specimen was tested using a separate graphene-free filter. Experiments were conducted with ATCC 6538 Staphylococcus aureus and ATCC 4352 Pneumococcus. The bacteriostatic reduction rate (%) was measured when ATCC 6538 Staphylococcus aureus was tested, and FIG. 5 shows a picture of a control group and FIG. 6 shows a picture when the graphene filter of the present invention is applied. In addition, the bacteriostatic reduction rate (%) was measured when ATCC 4352 pneumonia was tested, and FIG. 7 shows a picture of the control group and FIG. 8 shows a picture when the graphene filter of the present invention is applied. Table 4 below shows the experiment The bacteriostatic reduction rate results of Example 3 are shown.

division Concentration of inoculum solution Bacteriostatic reduction rate (%) Staphylococcus aureus ATCC 6538 Staphylococcus aureus 1.1 x 10 ⁵ CFU/mL 99.9 Klebsiella pneumoniae ATCC 4352 pneumoniae 1.4 x 10 ⁵ CFU/mL 95.2

5 to 8 and Table 4, in the case of the third layer including the graphene material as in the present invention, the bacteriostatic reduction rate is very high at 99.9% (ATCC 6538 Staphylococcus aureus) and 95.2% (ATCC 4352 Pneumococcus) It has a numerical value, and it was confirmed that there is an excellent antibacterial action effect.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments and can be manufactured in a variety of different forms, and those skilled in the art in the art to which the present invention belongs A person will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting.

1: mask body
2: strap
3: seating part
100: first layer
200: second layer
300: 3rd layer
400: 4th layer
500: 5th layer

Claims (14)

A mask body covering the user's mouth and nose when worn by the user; and
Including; wearing straps connected to both sides of the mask body,
The mask body includes a first layer composed of a fiber material including polyester, polyurethane or nylon, a second layer attached to one surface of the first layer and composed of a material containing polypropylene, and a surface of the second layer. A third layer attached and composed of an expanded-polytetrafluoroethylene (ePTFE) membrane filter or a material containing graphene to a polypropylene material, a fourth layer attached to one side of the third layer and composed of a material containing polypropylene, and the A mask comprising a fifth layer attached to one surface of the fourth layer and composed of a fiber material including polyester, polyurethane, or nylon and an antibacterial yarn containing silver (Ag) nano-components. According to claim 1,
The fifth layer is a mask, characterized in that woven to include a depression of a specific pattern on the surface of the fiber material. According to claim 2,
The fifth layer is a mask, characterized in that woven to include a pattern formed as a depression on the surface of the polyester fiber material. According to claim 1,
When the third layer is composed of a material containing graphene in a polypropylene material, the polypropylene is in the range of 90% to 94% by weight and the graphene is 3 A mask characterized in that it is included in the range of weight% to 5% by weight, and includes the remaining amount of other additives. According to claim 1,
A mask, characterized in that a water repellent layer containing an antibacterial metal containing zinc oxide is formed on the other surface of the first layer. According to claim 1,
The mask, characterized in that the first layer comprises a water repellent component. According to claim 1,
The mask, characterized in that the second layer and the fourth layer is a non-woven fabric formed of polypropylene. According to claim 1,
The mask further comprises a seating portion attached to one surface of the fifth layer, formed to face the user's nose, and composed of a sponge. According to claim 1,
The first layer and the second layer are bonded by a hot melt method to form a first structure, and the third to fifth layers are bonded by a hot melt method to form a second structure,
The mask, characterized in that the first structure and the second structure are bonded between the second layer and the third layer by ultrasonic welding. In the mask manufacturing method comprising a mask body covering the user's mouth and nose when worn by the user and a wearing string connected to both sides of the mask body,
Forming a first structure by bonding a first layer made of a fiber material including polyester, polyurethane, or nylon, and a second layer made of a material containing polypropylene to one side of the first layer by a hot melt method. ;
A third layer made of a material containing graphene in an ePTFE membrane filter or polypropylene material, a fourth layer formed on one surface of the third layer and composed of a material containing polypropylene, and formed on one surface of the fourth layer forming a second structure by bonding a fifth layer composed of a fiber material including polyester, polyurethane, or nylon and an antibacterial yarn containing silver (Ag) nano-component by a hot melt method; and
and bonding the first structure and the second structure by ultrasonic fusion so that one surface of the second layer and the other surface of the third layer are bonded. According to claim 10,
Forming a surface water repellent layer by applying an antimicrobial metal containing zinc oxide in a water repellent mixture to the other surface of the first layer of the first structure after the step of forming the first structure, further comprising forming a water repellent layer A mask manufacturing method, characterized in that. According to claim 10,
The forming of the first structure may include coating an adhesive component including a crosslinking agent between the first layer and the second layer, and then bonding the first layer to the second layer by a hot melt method. According to claim 10,
The fifth layer is a mask manufacturing method, characterized in that woven to include a pattern formed as a depression on the surface of the polyester fiber material. According to claim 10,
When the third layer is composed of a material containing graphene in a polypropylene material, the polypropylene is in the range of 90% to 94% by weight and the graphene is 3 A method for manufacturing a mask, characterized in that it is included in the range of weight% to 5% by weight, and the remaining amount of other additives.

Images