Mask and manufacturing method thereof

Abstract

The present invention provides a mask comprising a mask body that covers the face of a wearer and a wearing string attached to both sides of the mask body, the mask body including a filter member consisting of a support layer having a mesh structure and a filter coating layer formed on the outer surface of the support layer and filtering pollutants, the filter coating layer being made of a web of fine fibers electrospun onto the support layer.

Description

[Technical Field]

[0001] The present invention relates to a mask and a manufacturing method thereof, and more particularly to a mask in which a filter member constituting the mask body is configured in a form in which a very thin filter layer is coated on the surface of a mesh-structured support layer, thereby allowing the wearer to breathe easily and providing excellent resistance to pollutants and bacteria, and a manufacturing method thereof. [Background technology]

[0002] A mask is used to prevent harmful pollutants in the air, such as dust, pollen, particulate matter, and pathogenic bacteria, from being inhaled into the respiratory tract. It generally consists of a mask body that covers the wearer's face, and round ear straps attached to both ends of the mask body so that they can be placed over the wearer's ears.

[0003] Conventional masks are mainly made of cotton. While these masks can prevent colds and other illnesses by preventing cold air from being directly inhaled through the nasal and oral cavities, they have the drawback of being ineffective at blocking very small harmful substances such as viruses, bacteria, and particulate matter, which are smaller than the pores formed between the cotton fabric due to the characteristics of the coarse, flat cotton fabric.

[0004] As a result, there has been a recent trend of a sharp increase in demand for health and epidemic prevention masks with improved filtering performance that combine nonwoven fabrics and filters to block yellow dust, particulate matter, fine particulate matter, pathogenic bacteria, etc., and specific details regarding such health and epidemic prevention masks are disclosed in Patent Document 1, etc.

[0005] Representative examples of such health and epidemic prevention masks include the KF (Korea Filter) 80 and KF94 masks, which use meltblown nonwoven fabric filters. Most of these health and epidemic prevention masks are made by laminating statically charged fibers to a certain thickness (0.15 to 0.25 mm) to maintain the mask's shape and filter out pollutants.

[0006] Therefore, in conventional health and epidemic prevention masks, when air passes through the mask body, the static electricity described above causes minute pollutants in the air to be adsorbed. In this case, the air breathed by the wearer must pass through the thickness of the mask, which increases inhalation resistance, making it difficult for the wearer to breathe when worn for a long time.

[0007] Furthermore, conventional health and epidemic prevention masks use static electricity to adsorb pollutants, so while they are highly effective at blocking fine pollutants in everyday life, when worn in environments exposed to water, such as swimming pools and water parks, or on rainy days, the mask itself gets wet and the static electricity in the nonwoven fabric filter is lost, preventing the mask from fully filtering out pollutants and resulting in the inability to block pathogenic germs and bacteria, such as those caused by Severe Acute Respiratory Syndrome (SARS) and the new coronavirus, which are transmitted through droplets from infected people.

[0008] Furthermore, as mentioned above, conventional health and epidemic prevention masks require electrostatic fibers to be layered at a certain thickness, so when worn at a swimming pool, the mask itself gets wet and water particles that permeate the entire nonwoven fabric clog the fine pores in the mask itself, making it even more difficult for the wearer to breathe. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Korean Patent Publication No. 2011-0046906 Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has been made to solve the problems of the prior art as described above, and the object of the present invention is to provide a mask with a significantly thinner mask body, which allows the wearer to breathe easily and has excellent filtering efficiency against pollutants and bacteria, and a method for manufacturing the same.

[0011] Another object of the present invention is to provide a mask and a manufacturing method thereof that not only has excellent water drainage properties even when the mask body is wet, allowing the wearer to breathe easily, but also maintains the same level of filtration efficiency against pollutants and bacteria as before it was wet, allowing it to be worn continuously even in wet environments such as at a water play area or on rainy days, and can prevent infection by pathogenic bacteria transmitted through droplets from an infected person. [Means for solving the problem]

[0012] To achieve the above object, the present invention provides a mask comprising a mask body that covers the face of a wearer and fastening strings attached to both sides of the mask body, wherein the mask body includes a filter member comprising a support layer having a mesh structure and a filter coating layer formed on one surface of the support layer to filter pollutants, and the filter coating layer is made of a microfiber web electrospun onto the support layer.

[0013] The filter coating layer includes a first filter coating layer consisting of a first web of fine fibers electrospun on one side surface of the support layer, and a second filter coating layer consisting of a second web of fine fibers electrospun on the surface of the first filter coating layer, wherein the diameter of the second fine fibers is smaller than the diameter of the first fine fibers.

[0014] The support layer and the filter coating layer are made of polyester (PET) material.

[0015] The support layer is made by weaving polyester yarn having a thickness of 5 to 50 denier with a mesh size of 100 to 150.

[0016] The first fine fibers have a thickness of 10 to 40 μm, and the second fine fibers have a thickness of 0.05 to 2 μm.

[0017] At least one of the support layer or the filter coating layer includes at least one of a graphene component or a linolenic acid component.

[0018] The mask body further includes a face contact member coupled to the other surface of the support layer and having a plurality of through holes formed therein.

[0019] The face-contacting member is a nonwoven fabric made of water-repellent polypropylene (PP) material.

[0020] A joint is formed on the outer surface of the mask body where the filter member and the facial contact member are joined to each other by ultrasonic welding. The joint includes a first joint where the filter member and the facial contact member are joined to each other along their respective frames to form the mask body, and a second joint where the filter member and the facial contact member are joined to each other at the center of the mask body, which functions as a rib to prevent the mask body from adhering to the wearer's face.

[0021] In addition, a method for manufacturing a mask according to the present invention includes the steps of weaving raw yarn into a mesh structure to form a support layer, forming a first filter coating layer consisting of a first web of fine fibers on one side surface of the support layer by electrospinning, forming a second filter coating layer consisting of a second web of fine fibers on the surface of the first filter coating layer by electrospinning, and bonding a face contact element to the other side surface of the support layer on which the first and second filter coating layers have been formed, wherein the diameter of the second fine fibers is smaller than the diameter of the first fine fibers, and the face contact element has a plurality of through holes formed therein. [Effects of the Invention]

[0022] The mask of the present invention has a filter member that constitutes the mask body, which consists of a mesh-structured support layer and a thin filter coating layer formed on the surface of the support layer. As a result, the length of the air intake passage through the micropores (corresponding to the thickness of the filter coating layer) is very short. Therefore, compared to conventional health and epidemic prevention masks made of thick nonwoven fabric, the mask has excellent filtering efficiency against pollutants (pollen, particulate matter, pathogenic bacteria, etc.) at the same level, and in addition, it has low inhalation resistance, making it very easy for the wearer to breathe.

[0023] Furthermore, since the mask according to the present invention filters pollutants not through electrostatic attraction but through the micropores formed in the filter coating layer, even if the filter member gets wet in an environment exposed to water, such as during rain or at a swimming pool, the filtration efficiency against pollutants can be maintained at the same level as before the filter member got wet.

[0024] Furthermore, even if the filter member of the mask according to the present invention becomes wet in an environment exposed to moisture, water passing through the thin filter coating layer is able to escape through the mesh of the support layer, preventing the micropores of the filter member from becoming clogged. This allows the wearer to breathe easily and can be worn continuously, and can very efficiently prevent infection by pathogenic bacteria transmitted through droplets from an infected person. [Brief explanation of the drawings]

[0025] [Figure 1] FIG. 1 is a perspective view showing the front surface of a mask according to an embodiment of the present invention. [Figure 2] FIG. 1 is a perspective view showing the back surface of a mask according to an embodiment of the present invention. [Figure 3] FIG. 2 is a cross-sectional view taken along the line AA in FIG. [Figure 4] 4A and 4B are diagrams showing the microstructures of the first and second filter coating layers in FIG. 3 and SEM photographs thereof. [Figure 5] 1A to 1C are process diagrams illustrating a method for manufacturing a mask according to an embodiment of the present invention. [Figure 6] FIG. 1 is a diagram showing the results of a performance (dust filtration efficiency, face inhalation resistance) test of a mask according to one embodiment of the present invention. [Figure 7] FIG. 1 is a diagram showing performance (bacterial filtration efficiency) test results of a mask according to one embodiment of the present invention. [Figure 8] FIG. 1 is a diagram showing a test report of the performance (bacterial filtration efficiency) test results of a mask according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0027] 1 and 2 are perspective views showing the front and back of a mask according to one embodiment of the present invention, respectively, and FIG. 3 is a cross-sectional view taken along the line AA in FIG. 4 is a diagram showing the microstructures of the first and second filter coating layers in FIG. 3 and SEM photographs thereof, and FIG. 5 is a process diagram illustrating a method for manufacturing a mask according to one embodiment of the present invention.

[0028] A mask according to one embodiment of the present invention includes a mask body 1 that covers the face of a wearer, and wearing strings 2 that are connected to both sides of the mask body 1.

[0029] Furthermore, the mask body 1 includes a filter member 10 that filters out pollutants, and in the detailed description and claims of this specification, the term "pollutants" is a concept that includes all of pollen, particulate matter, fine particulate matter, pathogenic germs (or bacteria), droplets containing the pathogenic germs, etc.

[0030] The filter member 10 also includes a support layer 11 having a mesh structure and filter coating layers 12, 13 formed on one side surface (i.e., the outer surface or the inner surface) of the support layer 11 to filter out contaminants. In this embodiment, as an example, the filter coating layers 12, 13 are formed on the outer surface of the support layer 11.

[0031] Here, the support layer 11 has a mesh structure (i.e., a net-like structure) that is excellent in air flow and water drainage in order to maintain the shape of the mask body 1 or the filter member 10, and in the present invention, the mesh structure is formed by weaving any one of fiber yarns made of known polymer resin material.

[0032] For this reason, in this embodiment, as an example, the support layer 11 is woven into a mesh structure using polyester (PET) yarn, and specifically, polyester yarn having a thickness of 5 to 50 denier is woven into 100 to 150 mesh.

[0033] In addition, the filter coating layers 12 and 13 function as a filter for filtering out fine contaminants, and in the present invention, are made of a web of fine fibers obtained by electrospinning a polymer resin melt (i.e., a spinning solution) onto the outer surface of the support layer 11. Since the details of the electrospinning are well known in the art, detailed description thereof will be omitted here.

[0034] In this way, the mask according to the present invention is configured such that the support layer 11, which has excellent air flow and water drainage properties, maintains the shape of the mask body 1 or the filter member 10, and the filter coating layers 12, 13 formed on the outer surface thereof perform only the substantial filtering function of filtering out pollutants.

[0035] Therefore, it is sufficient that the filter coating layers 12, 13 are laminated (or coated) on the outer surface of the support layer 11 to a thickness necessary to form a web for filtering contaminants, and in this embodiment, as an example, the filter coating layers 12, 13 are formed to a thickness of approximately 10 to 500 μm.

[0036] As a result, compared to the thickness (0.15 to 0.25 mm) of the meltblown nonwoven fabric filter used in conventional health and epidemic prevention masks, the thickness (10 to 500 μm) of the fiber web (i.e., filter coating layer) that forms the actual filter part that filters pollutants in the mask of the present invention is significantly thinner, at the level of a coating film.

[0037] As a result, the mask according to the present invention has a very short air passage length (i.e., corresponding to the thickness of the filter coating layer) through the micropores (described below) formed in the filter coating layers 12 and 13 when breathing, which has the advantage of significantly reducing the inhalation resistance to the face, which is a key performance feature of masks, compared to health and epidemic prevention masks made with conventional nonwoven fabric filters, which have a relatively long air passage length (i.e., corresponding to the thickness of the nonwoven fabric filter).

[0038] Therefore, when the mask of the present invention is used as a mask for blocking pollen or particulate matter, it has excellent filtration efficiency against pollutants, at the same level as conventional health and epidemic prevention masks, and also has the effect of making breathing much easier for the wearer.

[0039] Furthermore, since the filter coating layers 12 and 13 of the mask according to the present invention are not thick enough to store water, when the mask is worn in an environment exposed to water, such as in rainy weather or at a swimming pool, water park, etc., even if the filter member 10 gets wet, the water passing through the filter coating layers 12 and 13 does not penetrate the filter coating layers 12 and 13, or, as will be described later, does not accumulate in the micropores formed in the filter coating layers 12 and 13, but mostly escapes through the mesh of the support layer 11.

[0040] Therefore, the mask according to the present invention has excellent water drainage even when the mask body 1 gets wet, and the micropores of the filter member 10 (specifically, the micropores of the filter coating layer), which will be described later, are not clogged, allowing the wearer to breathe easily and allowing the mask to be worn continuously even in an environment exposed to moisture.

[0041] Meanwhile, the mask according to the present invention may be configured so that the filter coating layers 12 and 13 are made of one coating layer, but may also be configured so that the filter coating layers 12 and 13 are made of multiple coating layers, if necessary, in order to improve the filtering efficiency against pollutants.

[0042] For this purpose, in this embodiment, as an example, the filter coating layers 12, 13 include a first filter coating layer 12 consisting of a web of first fine fibers (not shown) electrospun on the outer surface of the support layer 11, and a second filter coating layer 13 consisting of a web of second fine fibers (not shown) electrospun on the outer surface of the first filter coating layer 12.

[0043] Here, the first filter coating layer 12 is electrospun directly onto the outer surface of the support layer 11 to form first micropores 12a, which are relatively large macropores, and the second filter coating layer 13 is electrospun onto the outer surface of the first filter coating layer 12 to partition the first micropores 12a and form second micropores 13a, which are relatively small micropores.

[0044] For this reason, in the electrospinning step, it is preferable to adjust the diameter of the second fine fibers forming the second filter coating layer 13 to be smaller than the diameter of the first fine fibers forming the first filter coating layer 12.

[0045] In this embodiment, as an example, the filter coating layers 12 and 13 are made of the same polyester material in consideration of adhesion to the support layer 11, but this is not limited thereto, and they may be made of a polymer resin material different from that of the support layer 11, if necessary.

[0046] In this embodiment, for example, the thickness of the first fine fibers is 10 to 40 μm, and the thickness of the second fine fibers is 0.05 to 2 μm.

[0047] The filter member 10 of the mask according to the present invention configured as described above does not adsorb pollutants by electrostatic attraction or repulsion as in conventional health and epidemic prevention masks made of nonwoven fabric filters (i.e., KF80 or KF94 masks, etc.), but filters pollutants through the first and second micropores 12a, 13a formed in the filter coating layers 12, 13. Therefore, there is no need for electrostatic treatment when manufacturing the filter member 10, thereby reducing the manufacturing cost of the mask.

[0048] In addition, health and epidemic prevention masks made with conventional nonwoven fabric filters have the disadvantage that when they get wet in an environment exposed to moisture, they lose static electricity, which significantly reduces the particulate matter filtering efficiency and bacterial filtering efficiency, which are the main functions of health and epidemic prevention masks.

[0049] In contrast, with the mask of the present invention, even if the mask body 1 becomes wet, the filtering efficiency of the filter member 10 for particulate matter and bacteria remains at almost the same level as before it became wet, so that it can efficiently block infectious germs (or bacteria) such as SARS and the new coronavirus that are transmitted through droplets from infected people.

[0050] On the other hand, when the filter coating layers 12 and 13 are formed on the outer surface of the support layer 11 as in the present embodiment, the inner surface of the support layer 11 that comes into contact with the wearer's face has a mesh structure, which can cause inconvenience in terms of poor wearing comfort due to the rough texture of the mesh.

[0051] Therefore, in order to prevent this, the mask according to this embodiment further includes, as an example, a face contact member 20 that is attached to the other surface of the support layer 11 (in this embodiment, the inner surface of the support layer) of the mask body 1, and if necessary, for example, the configuration of the face contact member 20 for blocking particulate matter or pollen can be omitted.

[0052] Furthermore, in an environment exposed to moisture (particularly while playing in water), if water flows between the mask body 1 and the wearer's face through the frame of the mask body 1 that comes into contact with the wearer's face, or through the face contact member 20 from the front of the mask body 1, the face contact member 20 may be formed with a plurality of drainage holes 21 in the shape of through holes so that the flowing water can be discharged in the direction of the filter member 10.

[0053] Here, the drainage holes 21, in addition to the drainage function described above, also serve to minimize the breathing resistance caused by the face contacting member 20, thereby preventing an increase in the inhalation resistance of the face, which is one of the main functions of a health and epidemic prevention mask.

[0054] Furthermore, it is further desirable that the face contact element 20 be made of a water-repellent material to minimize water from flowing from the front of the mask body 1 through the face contact element 20 between the mask body 1 and the wearer's face in an environment exposed to moisture (especially while playing in water).For this reason, in this embodiment, the face contact element 20 is made of a nonwoven fabric made of polypropylene (PP), a water-repellent polymer resin.

[0055] In addition, joints 31, 32, 33 are formed on the outer surface of the mask body 1 where the filter member 10 and the face contact member 20 are joined to each other by ultrasonic welding, and the joints 31, 32, 33 include a first joint 31 where the filter member 10 and the face contact member 20 are joined to each other along their respective frames, a second joint 32 where the filter member 10 and the face contact member 20 are joined to each other in the center of the mask body 1, and a third joint 33 where the end of the wearing string 2 is joined to one side of the outer surface of the mask body 1.

[0056] Here, the first joint 31 forms the mask body 1 by joining the frame portions of the filter member 10 and the facial contact member 20 to each other, and in this embodiment, as an example, the first joint 31 is formed not only in the frame portion but also in the width direction (i.e., left-right direction) of the filter member 10 and the facial contact member 20, and is configured to prevent excessive relative displacement between the filter member 10 and the facial contact member 20.

[0057] In addition, at the second joint 32, the filter member 10 and the face contact member 20 are joined to each other in the longitudinal direction (i.e., the vertical direction) at the center of the mask body 1, and the second joint 32 functions as a rib to prevent the mask body 1 from adhering to the wearer's face.

[0058] For this reason, in this embodiment, as an example, the second bonding portion 32 is formed to protrude in the direction of the outer surface of the mask body 1.

[0059] Furthermore, as mentioned above, a gap 22 is formed between the filter element 10 and the face-contacting element 20, which are joined together, and is spaced apart from the area excluding the joints 31, 32, and 33. This gap 22 allows a significant portion of water that flows from the filter element 10 toward the face-contacting element 20 to be discharged to the outside through the drainage holes 21 and the mash in the support layer 11, which has relatively low flow resistance, thereby further preventing water from flowing toward the wearer's face in environments exposed to moisture (particularly when playing in water).

[0060] Meanwhile, in this embodiment, as an example, the filter member 10 is described as comprising a support layer 11 and filter coating layers 12, 13 formed on the outer surface of the support layer 11, but this is not limited thereto, and if necessary, the filter coating layers 12, 13 may further include a cover layer (not shown) having a mesh structure similar to that of the support layer 11 on the outer surface thereof.

[0061] Furthermore, at least one material of the support layer 11, the first filter coating layer 12, the second filter coating layer 13, or the face-contacting member 20 contains a functional component, and in this embodiment, as an example, at least one of a graphene component or a linolenic acid component is used as the functional component.

[0062] The graphene component has excellent electrical conductivity (100 times that of copper), which reduces the electrical resistivity of the surface of the mask body 1 and quickly releases generated static charges, thereby achieving a static electricity blocking effect.

[0063] In addition, the graphene component has excellent antibacterial properties that eliminate bacteria such as Escherichia coli and Staphylococcus aureus, as well as excellent elasticity, which has the effect of maintaining the antibacterial properties of the surface of the mask body 1 and the effect of imparting elasticity that allows the mask body 1 to easily deform along various facial curves of the wearer.

[0064] In addition, the linolenic acid component is contained in vegetable oils extracted from flaxseed, sunflower seeds, chia seeds, etc., and has UV-blocking and antibacterial properties, protecting the skin and emitting a large amount of far-infrared rays, which increases cell vitality.

[0065] Furthermore, the linolenic acid component has sweat-absorbing, quick-drying, and deodorizing properties, so that even when wearing a mask for a long period of time, it can eliminate bad breath and moisture, maintaining a comfortable wearing experience.

[0066] Next, a method for manufacturing the mask according to the present invention configured as described above will be described with reference to FIG.

[0067] First, as described above, a mesh-structured support layer 11 is woven using polyester yarn (S10), and then a first filter coating layer 12 made of a first fine fiber web is formed on the outer surface of the woven support layer 11 by electrospinning (S20).

[0068] After step S20 is completed, a second filter coating layer 13 consisting of a web of second fine fibers is formed on the outer surface of the first filter coating layer 12 by electrospinning (S30), where the diameter of the second fine fibers is preferably smaller than the diameter of the first fine fibers.

[0069] After step S30 is completed, the face contact member 20 having a plurality of drainage holes 21 formed therethrough is bonded to the inner surface of the support layer 11 on which the first and second filter coating layers 12 and 13 are formed (S40), and the bonding is performed by ultrasonic welding at the first and second bonding portions 31 and 32 as described above.

[0070] As mentioned above, the drainage holes 21 in the face-contacting member 20 made of nonwoven fabric are preferably formed by conventional laser drilling.

[0071] After step S40 is completed, the combined support layer 11 and face contact member 20 are cut into a mask shape to form the mask body 1 (S50), and then the wearing strings 2 are attached to both sides of the mask body 1 (S60).

[0072] If the face contact member 20 is not included, step S40 is omitted, and in step S50, the mask body 1 is formed from the filter member 10 consisting of the support layer 11 and the filter coating layers 12, 13.

[0073] In order to evaluate the performance of the mask according to the present invention configured as described above, tests were conducted on three items, namely, dust collection efficiency, face inhalation resistance, and bacterial filtration efficiency, in accordance with the domestic and international standard test specifications for health and epidemic prevention masks. The results are shown in Figures 6 to 8.

[0074] First, FIG. 6 shows the test results of the performance (dust filtration efficiency, face inhalation resistance) of a mask according to one embodiment of the present invention. (a) of FIG. 6 shows the dust collection efficiency (%) and face inhalation resistance (mmH2O) performance standards for a KF health and epidemic prevention mask, and (b) of FIG. 6 shows the test results of measuring the dust collection efficiency and face inhalation resistance of a mask according to this embodiment before and after immersing the mask body 1 in water.

[0075] The test was conducted using a TSI8130 test machine in accordance with BS EN143, the European standard applied domestically for health masks, and NaCl was used as the aerosol (dust collection efficiency was 95 LPM flow rate, and face inhalation resistance was 30 LPM flow rate).

[0076] The dust collection efficiency test results for the masks according to the present invention showed that before immersion in water, the average was 80.8% (three samples), which was evaluated to be the same level as a KF80 mask, and after immersion in water, the average was 73.8% (three samples), which showed no significant decrease compared to before immersion. This confirmed that the masks according to the present invention still maintained good pollutant filtering performance even when wet in a humid environment.

[0077] In addition, the face inhalation resistance, which indicates breathability when wearing a mask, was an average of 3.7 mmH2O (three samples) before immersion in water and 4.1 mmH2O (three samples) after immersion in water. These results were evaluated as meeting the KF mask performance standards. Therefore, it was confirmed that the mask of the present invention has excellent water-shedding performance, allowing the wearer to breathe easily, even when worn continuously in everyday life as well as in environments exposed to water (especially while playing in water).

[0078] Next, Figures 7 and 8 show the performance (bacterial filtration efficiency) test results of a mask according to one embodiment of the present invention and a copy of the corresponding test report, respectively. Figure 7(a) shows the results of a bacterial filtration efficiency test conducted by the Korea Pharmaceutical Association on a domestic KF mask, and Figure 7(b) shows the results of a bacterial filtration efficiency test on a mask according to the present invention.

[0079] The test was conducted at Gyeongbuk Technopark, a domestic mask-certified testing institute, in accordance with ASTM F2101-14, the standard test method for bacterial filtration efficiency of medical masks (Staphylococcus aureus, test flow rate 28.3 LPM, average aerosol size 3.2 μm).

[0080] The bacterial filtration efficiency test results for the masks of the present invention showed an average of 97.5% (number of samples: 5), which is evaluated as being equal to or better than the KF94 mask. Considering that the masks of the present invention use a micropore filtration method rather than an electrostatic method, it is expected that they will exhibit the same level of bacterial filtration efficiency even when wet.

[0081] Therefore, it has been confirmed that the mask of the present invention can very effectively prevent infection by pathogenic bacteria transmitted through droplets from infected people, even in environments exposed to moisture (especially swimming pools). [Industrial Applicability]

[0082] The mask according to the present invention can be used as a mask for blocking particulate matter, a mask for blocking pollen, a mask for health and epidemic prevention at swimming pools, etc.

Claims

1. A mask including a mask body that covers the face of a wearer and a wearing string that is connected to both sides of the mask body, The mask body includes a filter member including a support layer having a mesh structure and a filter coating layer formed on one surface of the support layer to filter out contaminants, the filter coating layer is made of a fine fiber web having a thickness of 0.05 to 40 μm, which is electrospun onto the support layer; The mask body further includes a face contact member bonded to the other surface of the support layer and having a plurality of through holes formed therein. The mask is characterized in that the face-contacting member is a nonwoven fabric made of water-repellent polypropylene (PP) material.

2. The filter coating layer includes a first filter coating layer made of a first fine fiber web having a thickness of 10 to 40 μm that is electrospun on one surface of the support layer; a second filter coating layer formed on the surface of the first filter coating layer and consisting of a second fine fiber web having a thickness of 0.05 to 2 μm, 2. The mask of claim 1, wherein the diameter of the second fine fibers is smaller than the diameter of the first fine fibers.

3. 3. The mask of claim 2, wherein the support layer and the filter coating layer are made of a polyester (PET) material.

4. 4. The mask according to claim 3, wherein the support layer is made by weaving polyester yarn having an average diameter of 23 to 73 μm at a weave density of 40 to 59 threads / cm.

5. 5. The mask of claim 1, wherein at least one of the support layer and the filter coating layer comprises at least one of a graphene component and a linolenic acid component.

6. a joint portion where the filter member and the face contact member are joined to each other by ultrasonic welding is formed on the outer surface of the mask body; the joint portion includes a first joint portion where the filter member and the face contact member are joined together along their respective frames to form the mask body; 2. The mask according to claim 1, wherein the filter member and the face contact member are joined to each other at the center of the mask body, and further comprising a second joining portion that functions as a rib to prevent the mask body from adhering tightly to the wearer's face.

7. 10. The mask of claim 1, wherein the face-contacting component includes at least one of a graphene component and a linolenic acid component.

8. Weaving the yarn into a mesh structure to form a support layer; forming a first filter coating layer made of a first fine fiber web having a thickness of 10 to 40 μm on one surface of the support layer by electrospinning; forming a second filter coating layer on the surface of the first filter coating layer by electrospinning, the second filter coating layer being made of a web of fine fibers having a thickness of 0.05 to 2 μm; and bonding a face-contacting member to the other surface of the support layer on which the first filter coating layer and the second filter coating layer are formed, The face contact member is formed with a plurality of through holes, the support layer, the first filter coating layer, and the second filter coating layer are made of polyester material; A method for manufacturing a mask, wherein the face contact member is a nonwoven fabric made of water-repellent polypropylene material.

9. forming a support layer having a mesh structure using raw yarn; forming a first filter coating layer made of a first fine fiber web having a thickness of 10 to 40 μm on one surface of the support layer by electrospinning; forming a second filter coating layer on the surface of the first filter coating layer by electrospinning, the second filter coating layer being made of a web of fine fibers having a thickness of 0.05 to 2 μm; and bonding a face-contacting member to the other surface of the support layer on which the first and second filter coating layers are formed, The face-contacting member is a nonwoven fabric made of a water-repellent polypropylene (PP) material, and a plurality of through holes are formed before the bonding step. A method for manufacturing a mask.

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