KR20190064753A - Mask - Google Patents

Abstract

A mask according to an embodiment of the present invention includes a body portion covering a respirator of a user and having a filter, the filter including a pre-filter including a low basis weight needle punch nonwoven fabric and a spunbond nonwoven fabric; And a main filter including a low basis weight melt blown nonwoven fabric.

Description

Mask {Mask}

The present invention relates to a mask, and more particularly, to a mask having a high collection efficiency by including a needle punch nonwoven fabric and a prefilter composed of a spunbond nonwoven fabric and improving discomfort of breathing.

Recently, with the increase of fine dust generated in Korea and the increase of fossil fuel combustion due to the industrialization of China, the amount of fine dust that flows into the country is increasing, and exposure to fine dust is increasing. Fine dusts contain a large amount of toxic compounds and heavy metals, and when inhaled by humans, they are known to cause diseases such as heart attack, asthma, bronchitis, pneumonia and lung cancer.

One study reported that 20,000 deaths and lung-related diseases occur annually in the metropolitan area due to fine dust particles. A mask is used to block the entry of such fine dust into the human body.

In addition, cases are worn in everyday life to prevent infection or transmission from infectious germs that cause Severe Acute Respiratory Syndrome (SARS), the Middle East Respiratory Syndrome (MERS) that recently became popular in Korea, and colds.

Usually, such a mask is constituted by a main body portion covering a respiratory device such as a wearer's nose and mouth, and an earring portion provided as means for fastening the mask to the wearer. In some masks, the nose covering the nose and the jaw surrounding the jaw may be separated to enhance the comfort of the wearer or the close contact between the mask and the face in order to block the inflow of outside air.

Generally, the mask is made flat so that it can be folded and stored in a flat shape, and the shape of the mask can be deformed in three dimensions to cover the periphery of the respiratory tract. These masks have been used to maintain a three-dimensional shape in order to ensure sufficient breathing space between the nose and mouth and the mask.

The conventional mask uses a meltblown filter having a high collection efficiency, but it has a high differential pressure and has a problem that the respiration of the wearer becomes inconvenient when the mask is worn for a long time. In order to solve this problem, multilayer filters in which a charge pre-filter is combined with a meltblown filter have been proposed (see Japanese Patent Application Laid-Open No. 2000-189732). However, a mask using the above technique is applied only to high- Which is inconvenient to wear, and is difficult to manufacture in a folded shape.

Japanese Patent Laid-Open No. 2000-189732 (published on Nov. 11, 2000)

SUMMARY OF THE INVENTION The present invention has been made to improve the prior art, and it is an object of the present invention to provide a mask having a high collecting efficiency and a low differential pressure so as to ease the wearer's breathing.

A mask according to an embodiment of the present invention includes a body portion covering a respirator of a user and having a filter, the filter including: a pre-filter including a low basis weight needle punch nonwoven fabric and a spunbond nonwoven fabric; And a main filter including a low basis weight melt blown nonwoven fabric.

Specifically, the filter may be formed by laminating a needle punch nonwoven fabric, a spunbond nonwoven fabric, and a meltblown nonwoven fabric in this order.

Specifically, the pre-filter may be charged.

Specifically, the needle punch nonwoven fabric may be made of a polyolefin fiber, a polyester fiber, an acrylic fiber, a nylon fiber, a rayon fiber, a wool fiber, or a mixture thereof.

Specifically, the needle punch nonwoven fabric may be obtained by blending polyolefin fibers and acrylic fibers or wool fibers at a weight ratio of 2: 8 to 8: 2.

Specifically, the needle punch nonwoven fabric may have a basis weight of 30 gsm to 110 gsm.

Specifically, the spunbond nonwoven fabric may be made of polyolefin-based fibers, polyester-based fibers, or a mixture thereof.

Specifically, the spunbond nonwoven fabric may be manufactured by a calendering method or a water flow method.

Specifically, the meltblown nonwoven fabric may be made of polyolefin-based fibers.

Specifically, the meltblown nonwoven fabric may have a basis weight of 10 gsm to 100 gsm.

Specifically, the pre-filter may be a needle punch nonwoven fabric and a spunbond nonwoven fabric bonded together by needle punching.

The mask according to the present invention can use a meltblown nonwoven fabric having a reduced basis weight than conventional ones by applying a prefilter to a mask having a meltblown nonwoven fabric as a main filter. Even if a long time mask is worn with a low differential pressure, Breathing is possible and exhibits a better collecting efficiency than when only a single-layer high-melt-melt blown nonwoven fabric is used. Also, the mask according to the present invention can maintain a uniform collection efficiency regardless of the degree of tensile even if a needle punch nonwoven fabric having a low basis weight is used, and can be folded for easy storage.

1 shows a front view of a mask according to an embodiment of the present invention.
2 shows a cross-section of a mask according to an embodiment of the present invention.
3 shows a cross section of a filter according to an embodiment of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

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

FIG. 1 is a front view of a mask according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a mask according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a filter according to an embodiment of the present invention.

1 and 2, a mask 1 according to an embodiment of the present invention includes a main body 10 and a fixing portion 20. As shown in FIG.

The main body 10 covers the respirator of the user. At this time, the main body 10 is provided so as to be foldable with respect to the center of the left and right, and the main body 10 is folded, so that the mask 1 becomes flat and can be stored conveniently.

The main body portion 10 may include a nose portion 11, an inlet portion 12, and a shoulder portion 13. [ The nose portion 11 forms the upper side of the body portion 10 and covers the nose of the user, and may have a height increasing toward the left and right center.

When the mask 1 is stored in a folded state and both sides are expanded, the nose portion 11 is extended obtuse on the basis of the center of the left and right sides, and the nose portion 11 is in close contact with the face while covering the nose and left and right portions of the user, have.

It is preferable that the nose portion 11 has a curved hill shape instead of a simple mountain shape in order to adhere to the face around the nose while covering the nose. In order to maintain the nose portion 11 in such a shape, 11 may be provided with a steel wire 111.

The steel wire 111 may be provided on the upper side of the nose portion 11 or may be provided adjacent to the upper side and may be manufactured by coating synthetic resin such as polyolefin on the metal core. However, the material of the steel wire 111 is specifically limited no.

The steel wire 111 is provided to be symmetrical to the left and right, and has a feature of maintaining the changed shape when the shape is changed by external pressure. Accordingly, after the user unfolds the main body 10 and places the nose 11 on the nose, the user deforms the nose of the nose so as to deform the nose so as to correspond to the shape of the face around the nose . At this time, the state that the nose portion 11 is in close contact with the face can be maintained by the deformed steel wire 111.

A co-sponge (not shown) may be provided on the inner surface of the nose portion 11, which may be located inside the steel wire 111. The co-sponge is made of a synthetic resin such as polyurethane or the like and can serve as a cushion between the steel wire 111 and the face.

The mouth portion 12 is provided under the nose portion 11 and constitutes both sides of the body portion 10 and covers the mouth of the user. The mouth 12 may be provided integrally with the nose 11 and may not form a boundary with the nose 11 but may be provided at a boundary between the mouth 12 and the nose 11, .

The mouth 12 may have a relatively larger area than the nose 11 to cover the mouth and ball of the user and the fixing part 20 may be provided on both sides of the mouth 12. Of course, the fixing portion 20 may be provided so as to be fixed over the mouth 12 and the nose portion 11.

A fused portion 121 is provided in the mouth 12. The fused portion 121 may be a portion that fuses the layers constituting the body portion 10 in the form of a line or the like so as to fix the shape thereof and is fused in a downward sloping line shape from the center toward both sides , The fused portion 121 can form a bent portion when the main body portion 10 is unfolded.

That is, when the main body portion 10 is unfolded, the upper and lower portions are spread with an obtuse angle with respect to the fused portion 121. In this case, the main body portion 10 may be spaced apart from the ball upper portion sufficiently. That is, when the main body 10 is unfolded, the fused portion 121 can secure a wide breathing space in front of the respiratory apparatus.

At this time, the fused portion 121 may not be provided at the left and right center, and may be provided symmetrically with respect to the left and right center. In other words, the fused portions 121 are provided in a pair which are spaced apart from each other with a right-left center therebetween, so as to prevent the fused portion 121 from being obstructed by folding when the main body portion 10 is folded flat.

As described above, the fused portion 121 may be provided on the mouth 12 and may be viewed as being provided on the boundary line between the mouth 12 and the nose 11. In the figure, It is needless to say that a plurality of fused portions 121 may be provided in the vertical direction.

In other words, in this embodiment, the fused portion 121 can be structured or arranged as long as the breathing space between the respiratory apparatus and the main body portion 10 can be ensured when the main body portion 10 is unfolded and fixed to the respiratory apparatus.

The jaw portion (13) is provided under the mouth portion (12) and forms the lower side of the main body portion (10) to wrap the jaw of the user. Since the jaw portion 13, the mouth portion 12 and the nose portion 11 may be integrally formed, the mouth 12 and the jaw portion 13 may not be distinguished by a boundary line.

In addition, the fused portion 121 may or may not be provided between the jaw portion 13 and the mouth portion 12. In the case where the fused portion 121 is not provided, the jaw portion 13 and the mouth portion 12 are not visually distinguished So that it can be integrated.

The jaw portion (13) includes an incision portion (131) which is incised upwardly and downwardly. The incision portion 131 is formed upwardly with respect to the center of the left and right at the lower side of the jaw portion 13. The incision portion 131 has a shape of a triangle before being joined, have.

In this case, when the main body portion 10 is unfolded, the jaw portion 13 can be staggered obliquely to the left and right with respect to the cutout portion 131 to stably cover the jaw. At this time, the length of the cutout 131 is not particularly limited, and the manner in which the cutout 131 is joined after cutting is also not particularly limited.

However, when the cutouts 131 are joined by fusing or the like, a pair of sides that are cut out from the jaws 13 and face each other may protrude outward, and then the inner surfaces may be overlapped and fused.

The cutout portion 131 may have a line shape protruding outwardly. Thus, in the present embodiment, when the cutout portion 131 is formed in the jaw portion 13, a foreign substance may not be given to the face.

The main body portion 10 including the nose portion 11, the mouth portion 12 and the jaw portion 13 may be provided to omit the nose portion 11, the shoulder portion 13, and the like. However, in the present embodiment, the main body 10 may be assembled after the nose portion 11, the mouth portion 12 and the shoulder portion 13 are separately provided, or may be integrally provided.

In addition to the above-mentioned structure, the main body 10 can adopt any structure as long as a three-dimensional shape can be given. For example, the main body portion 10 has a planar shape in which the wrinkles in the lateral direction are folded, and the wrinkle can be formed in a three-dimensional shape while spreading upward and downward. Or the body portion 10 may itself maintain a three-dimensional shape. In other words, it is noted that the shape of the main body 10 described with reference to FIG. 1 and the above description is only an embodiment of the present invention, and does not limit the present invention.

The body 10 may be formed by stacking at least three layers such as the outer body 101, the rigid portion 102, the filter 103 and the lining 104 Here, the rigid portion 102 and the like may be omitted.

The outer surface 101 may be made of a synthetic fiber nonwoven fabric such as a spunbond nonwoven fabric made of polypropylene and exposed to the outside and the outer surface 101 may have a basis weight of 10 gsm to 80 gsm. Is not limited to the above. The outer cloth 101 can perform a function of primarily filtering out foreign matter.

The outer cloth 101 may be formed of a plurality of layers. In this case, the outer cloth 101 provided on the inner side is as described above, and the outer cloth 101 provided on the outermost side is made of a synthetic fiber such as a spunbonded nonwoven fabric made of polypropylene Nonwoven fabric and may have a basis weight of 5 gsm to 70 gsm, but the material and basis weight of the surface material 101 are not particularly limited.

The rigid portion 102 maintains the three-dimensional shape of the main body portion 10 so as to secure a sufficient breathing space between the respiratory apparatus and the main body portion 10 when the main body portion 10 is unfolded.

The rigid portion 102 is provided between the cloth 101 and the filter 103, but the order of lamination is not particularly limited. That is, the rigid portion 102 may be provided between the cloth 101 and the filter 103 and / or between the lining 104 and the filter 103.

When the mask 1 is folded by the rigid portion 102 so that the rigid portion 102 is provided in a size corresponding to the outer surface 101 or the like and has a size slightly smaller than the outer surface 101 and is stacked on only a part of the outer surface 101, The stereoscopic effect may be further improved. For example, the rigid portion 102 may have a size that covers the respiratory body but is spaced apart from the upper side of the nose portion 11 and the left and right sides of the mouth portion 12 and / or the lower side of the jaw portion 13. [

The rigid portion 102 may be arranged to overlap at least a part of the fused portion 121 and the mask 1 together with the fused portion 121 may have a three-dimensional shape to ensure a breathing space.

The rigid portion 102 may be made of a synthetic fiber nonwoven fabric such as a spunbond nonwoven fabric, and may have a basis weight of 30 gsm to 70 gsm, but is not limited thereto. For example, the rigid portion 102 may be folded or warped, but may have a higher density or a higher strength than the body portion 10.

For example, the rigid portion 102 may have a relatively thicker fiber thickness and / or a thicker thickness than the outer surface 101, the filter 103 and the lining 104. In this case, when the main body portion 10 is unfolded, the periphery of the rigid portion 102 may affect the three-dimensional shape of the main body portion 10.

The filter 103 is provided inside the outer cloth 101 and may include a main filter 103a and a pre-filter 103b. The main filter 103a may be a meltblown nonwoven fabric 1033 and the prefilter 103b may be a niddle punch nonwoven fabric 1031 and a spun- 1032) (see Fig. 3), and the filter 103 can filter the foreign substances passing through the outer surface 101.

Specifically, the main filter 103a may include a meltblown nonwoven fabric 1033. The meltblown nonwoven fabric 1033 may be made of a polyolefin-based fiber and may have a basis weight of 10 gsm to 100 gsm, but the material and basis weight are not limited to the above examples.

As described above, by using the meltblown nonwoven fabric 1033 having a relatively low basis weight as the filter 103 of the mask 1, the differential pressure is reduced, and even if the wearer wears the mask 1 for a long time, .

The mask 1 according to the embodiment of the present invention is provided with a prefilter 103b including a needle punch nonwoven fabric 1031 and a main filter 103b including a meltblown nonwoven fabric 1033, ), The differential pressure is reduced by more than 20% compared to using the same meltblown single filter with the same efficiency (using TSI 8130 and evaluating with 95LPM with NaCl particles).

The pre-filter 103b according to an embodiment of the present invention may include a needle punch nonwoven fabric 1031 and a spunbond nonwoven fabric 1032. [

The needle punch nonwoven fabric 1031 may be made of a polyolefin fiber, a polyester fiber, an acrylic fiber, a nylon fiber, a rayon fiber, a wool fiber, or a mixture thereof, and the composition ratio of the polyolefin fiber is 10% And the polyolefin fibers and the acrylic fibers or the wool fibers may be mixed in a weight ratio of 2: 8 to 8: 2. The basis weight of the needle punch nonwoven fabric 1031 may be a low basis weight similar to the meltblown nonwoven fabric 1033 included in the main filter 103a, and may be, for example, 30 gsm to 110 gsm, but the basis weight is not particularly limited.

The spunbonded nonwoven fabric 1032 may be formed of a polyolefin-based fiber, a polyester-based fiber, or a mixture thereof, and may be a nonwoven fabric prepared by a calendering method or a water flow method. The basis weight of the spunbonded nonwoven fabric 1032 may be 10 gsm to 80 gsm.

The needle punch nonwoven fabric 1031 and the spunbonded nonwoven fabric 1032 constituting the prefilter 103b are formed by pressing or pressing a part of a material by using an adhesive such as a needle punching method or a hot melt adhesive, an adhesive method using a pressure sensitive adhesive, But the present invention is not limited thereto. When the bonding method or the pressing method is used, the pressure loss of the pores of the nonwoven fabric may be increased, so that it is preferable to use the needle punching method. The pre-filter 103b combined in this way can maintain the collection efficiency uniformly regardless of the degree of tension of the nonwoven fabric in the mask manufacturing process even when a low basis weight needle punch nonwoven fabric is used.

The pre-filter 103b may constitute a separate layer of two kinds of nonwoven fabrics, and two kinds of nonwoven fabric layers may be laminated one by one to form two layers of prefilters 103b, but one Or two or more layers may be laminated to form three or more layers of prefilters 103b.

The pre-filter 103b may have been electrostatically processed to prevent foreign matter from entering, for example, the needle punch nonwoven fabric 1031 in the pre-filter 103b may be electrostatically processed. The electrostatic treatment can be performed by a corona treatment method for applying a high voltage to a target substrate, a charging method using a gas or a liquid, but the present invention is not limited thereto. Such an electrostatic treatment can effectively raise the filtering efficiency. If moisture is introduced into the filter 103 including the pre-filter 103b subjected to the electrostatic treatment, the filtering function may be lost due to the loss of the electrostatic function, so that the filter 103 may be spaced apart from the lining 104 .

The filter may be arranged such that the pre-filter 103b is located externally and the main filter 103a is located internally. The filter 103 may be formed by laminating a needle punch nonwoven fabric 1031, a spunbond nonwoven fabric 1032, and a meltblown nonwoven fabric 1033 in this order.

The contaminants such as fine dust and dust can be filtered out through the outer cloth 101 and the filter 103 and blocked from entering the respiratory apparatus.

The lining 104 is provided inside the filter 103 and faces the respirator. The lining 104 can be a nonwoven fabric or the like and the basis weight can be from 20 gsm to 60 gsm, but the material and basis weight are not limited.

 Of course, the material of the lining 104 and the filter 103 described above is not limited to the above, and the basis weight is not limited to the above values. The material, basis weight, structure, etc. of the outer surface 101 and the lining 104 can be variously selected depending on the purpose or area where the mask 1 is used, the size and kind of the foreign matter to be filtered, and the like.

The lining 104 is a portion that can directly abut the user's face and is provided to be spaced from the filter 103. [

The fixing part 20 is provided on both sides of the main body part 10 to fix the main body part 10 to the user's respiratory apparatus. The fixing portion 20 may be a band that wraps the head of the user or an earring type that can be hung on the user's ear. In this embodiment, the fixing portion 20 will be described as an earring for the sake of convenience.

The fixing portion 20 may be made of a cord having elasticity such as spandex or the like and both ends of the cord may be fixed at positions adjacent to both sides of the main body 10 between the nose portion 11 and the mouth portion 12 .

The fixing portion 20 can fix the both ends of the string by various methods such as fusion or compression, and the portion where the both ends of the string are fixed can be referred to as the connection portion 21. [ That is, the fixing part 20 can implement a closed loop based on the connecting part 21.

At this time, the fixing portion 20 can be caught by the middle portion of the string by the hook portions 22 provided on both sides of the mouth 12. At least one hook portion 22 is provided on each side of the mouth 12, and a string can be fastened to the hook portion 22.

In this case, the fixing portion 20 can constitute a closed loop that extends outward at both upper and lower ends of the mouth 12. However, the string may be fixed to the fixed portion 20 in a non-movable state and may be movably held in the hook portion 22. [

The user can pull the fixing portion 20 and hang it on the ear so that the body portion 10 can be positioned adjacent to the respirator. On the other hand, the user can release the fixing portion 20 from the ear to separate the body portion 10 from the respirator .

Of course, in the present embodiment, the fixing portion 20 is not limited to the drawings and the contents described above, and may have various structures as long as the body portion 10 covers the user's respirator. For example, the fixing portion 20 may be a bonding portion (not shown) provided on the periphery of the body portion 10. [

As described above, according to the present embodiment, since the main filter including the low basis weight meltblown nonwoven fabric and the multi-layer filter made of the prefilter in which the spunbond nonwoven fabric is laminated on the low basis weight needle punch nonwoven fabric are used, In contrast to the case where the trowel filter is used singly, it is possible to make it easy to breathe. In the case of using a high-density needle punch nonwoven fabric, the contrast can be easily worn and the difficulty of forming a folding type can be solved. So that uniform collection efficiency can be maintained.

Experimental Example 1. Confirmation of collection efficiency and differential pressure according to pre-filter bonding method

A pre-filter (Example 1) in which an electrostatic-treated needle punch nonwoven fabric 60gsm and a spunbond nonwoven fabric 15gsm were combined using a needle punching method (Example 1) was prepared and a needle punch nonwoven fabric and a sponge A pre-filter (Comparative Example 1) in which the bond-bonded non-woven fabric was adhered using a hot-melt adhesive, and a pre-filter (Comparative Example 2) in which the adhesive was fused using ultrasonic waves were prepared. At this time, the needle punch nonwoven fabric was subjected to electrostatic treatment using a hydro-charging method using water.

The collection efficiency and pressure loss of the prepared pre-filter were measured at 95 LPM using 0.6 Pm NaCl particles using TSI 8130.

As a result of the measurement, it was confirmed that the pre-filter of Example 1 had a smaller collection efficiency than that of the pre-filters of Comparative Examples 1 and 2, but had a smaller pressure loss (differential pressure) (see Table 1 below).

Example 1 Comparative Example 1 Comparative Example 2 Needle punch Nonwoven basis weight (gsm) 60 60 60 Spunbond nonwoven basis weight (gsm) 15 15 15 Joining method Needle punching Hot melt adhesive Ultrasonic welding Electrostatic processing Hydro-charging Hydro-charging Hydro-charging Collection efficiency (%) 60 59 63 Pressure loss (ΔP) 10pa 45pa 65pa

Experimental Example  2. Prefilter  With or without electrostatic processing Capture  Efficiency and Foreclosure  Confirm

A pre-filter (same as the first embodiment of Experimental Example 1) in which electrostatic-treated needle punch nonwoven fabric 60gsm and hydrostatic spunbond nonwoven fabric 15gsm were bonded by needle punching method using hydrocharging according to the present invention And a pre-filter (Comparative Example 3) in which the non-electrostatic-treated needle punch nonwoven fabric and the spunbond nonwoven fabric were adhered in the same manner was prepared.

The collection efficiency and pressure loss of the prepared pre-filter were measured at 95 LPM using 0.6 Pm NaCl particles using TSI 8130.

As a result of the measurement, it was confirmed that the electrostatic pretreated prefilter of Example 1 had a similar pressure loss (differential pressure) to that of the prefilter of Comparative Example 3, but had a good collecting efficiency (see Table 2 below) .

Example 1 Comparative Example 3 Needle punch Nonwoven basis weight (gsm) 60 60 Spunbond nonwoven basis weight (gsm) 15 15 Joining method Needle punching Needle punching Electrostatic processing Hydro-charging none Collection efficiency (%) 60 8 Pressure loss (ΔP) 10pa 11pa

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: mask 10:
101: Outer 102: Rigid part
103: filter 103a: main filter
103b: pre-filter 1031: needle punch nonwoven fabric
1032: spunbond nonwoven fabric 1033: meltblown nonwoven fabric
104: lining 11:
111: Steel wire 12:
121: fused portion 13: jaw
131: incision section 20:
21: connection part 22: hook part

Claims (11)

And a body portion covering the respirator of the user and having a filter,
The filter includes:
A pre-filter including a low basis weight needle punch nonwoven fabric and a spunbond nonwoven fabric; And
And a main filter including a low basis weight meltblown nonwoven fabric. 2. The filter according to claim 1,
A needle punch nonwoven fabric, a spunbond nonwoven fabric, and a meltblown nonwoven fabric in this order. The filter according to claim 1,
Wherein the mask is electrically charged. The needle punch nonwoven fabric according to claim 1,
A mask characterized by comprising a polyolefin fiber, a polyester fiber, an acrylic fiber, a nylon fiber, a rayon fiber, a wool fiber, or a mixture thereof. The needle punch nonwoven fabric according to claim 4,
Wherein the polyolefin fibers and the acrylic fibers or the wool fibers are mixed at a weight ratio of 2: 8 to 8: 2. The needle punch nonwoven fabric according to claim 1,
And a basis weight of 30 gsm to 110 gsm. The spunbonded nonwoven fabric according to claim 1,
A polyolefin-based fiber, a polyester-based fiber, or a mixed fiber thereof. The spunbonded nonwoven fabric according to claim 1,
Wherein the mask is manufactured by a calendering method or a water flow method. The nonwoven fabric according to claim 1, wherein the meltblown non-
Characterized in that it is made of polyolefin-based fibers. The nonwoven fabric according to claim 1, wherein the meltblown non-
And a basis weight of 10 gsm to 100 gsm. The filter according to claim 1,
Characterized in that the needle punch nonwoven fabric and the spunbond nonwoven fabric are joined by needle punching.

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