KR20180033760A - Dust mask - Google Patents

Abstract

The present invention relates to a dust mask capable of effectively filtering various harmful particles such as fine dust, bacteria, viruses, and the like through a multilayer filter structure. The dust mask comprises: a mask body (10) which is close to a face unit; and a hook band (20) which is provided in both sides of the mask body. The mask body (10) includes a surface layer (100), a bacterial removing layer (200), an electrostatic fiber layer (300), a phytoncide coating layer (400), and a lining layer (500). The surface layer (100) is composed of a continuous fine fiber layer including fine particles. The bacterial removing layer (200) includes a first layer (201) which performs positive charge coating on the inside and the surface and a second layer (202) which is made of a polypropylene meltblown-calendered nonwoven. The electrostatic fiber layer (300) is composed of a fine fiber layer which permanently charges static electricity. The phytoncide coating layer (400) constitutes a fibrous mat such as a fibrous web or the like by using a filament formed by spraying and fixing liquid resin mixed with phytoncide. The lining layer (500) is directly touched with the face unit. The present invention prevents diseases caused by inhalation of harmful substances in the air by effectively filtering the various harmful particles in the air through a physical multilayer filter structure. Since a filtering performance is maintained after washing, the present invention can be reused after repeated washing.

Description

Dust mask

The present invention relates to a dust mask, and more particularly, to a dust mask which can effectively filter various harmful particles such as bacteria, viruses and the like including fine dust through a multilayer filter structure, It is about a dust mask.

Generally speaking, a mask is a thing that covers nose and mouth to prevent inhalation and scattering of germs and dusts such as hygiene sanitary pads, and is usually made of gauze, which is a plain cotton cloth woven with a single yarn, '.

 It originated in 1919, when the influenza was prevalent in the world, it was used as an idea to prevent colds. However, as a result of drinking cold air directly, the resistance in the nasal cavity and oral cavity weakened Even though it can be avoided that it gets caught in a cold, viruses and germs smaller than the pores formed in the tissues of the cotton fabric due to the nature of the plain weave cotton fabrics with the tissue are passed through the cotton mask and enter the human body through the nose or mouth, In the process of breathing, coughing, and sneezing, harmful particles such as viruses and bacteria, which are discharged through the nose and mouth, are scattered to the outside through the face mask, so that filtering of the harmful particles using the face mask is not effective .

In addition, due to the geographical characteristics of Korea, the "yellow dust", which is a small amount of sand, loess or dust floating in the desert and loess in the center of Asian continent such as neighboring countries such as China and Mongolia, In addition to frequent observations in the period of 3 to 6 days from March to May, as well as the rapid industrialization of China, ultra-fine dusts from many factories in China are flowing into western countries.

Such dust is fine dust having a diameter of less than 10 mu m, and in the case of ultrafine dust having a diameter smaller than that of the fine dust, the diameter is less than 2.5 mu m, and it is impossible to filter fine dust or ultrafine dust with a general surfacing mask.

However, fine dust or ultrafine dust (hereinafter, referred to as fine dust) penetrates into the deepest part of the respiratory tract when it enters the human respiratory tract and infiltrates into the blood vessels. As a result, when exposed to fine dusts for a long period of time, The World Health Organization (WHO) reported that it could be exposed to various diseases such as cardiovascular diseases, skin diseases and eye diseases as well as respiratory diseases such as asthma and bronchitis, black carbon) as a first-level carcinogen.

There are various ways to protect the human body by preventing inflow of micro dust as well as viruses and bacteria in health hygiene. The most common method is to use harmful substances such as viruses, bacteria, fine dusts To prevent the inflow of the human body.

However, since the conventional face mask is not effective in filtering harmful particles having a very small size such as viruses, bacteria, fine dust, etc., which are smaller than the pores formed between the tissues of the cotton fabric due to the characteristics of the plain weave cotton fabric, To improve the filtering performance, a fine dust mask made by mixing a nonwoven fabric and a filter is often called a 'dust mask'.

The technology related to the dust mask has been proposed variously. Representative conventional techniques will be described as follows.

Japanese Patent Application Laid-Open No. 10-0966272 discloses a middle filter cloth having four corners and four sides, a wear band fixed to the four corners, an upper edge of the middle filter cloth and an upper edge of the middle filter cloth, A bottom leaf having a seam line or a fold line and fixed on the nose of the middle filter cloth, a lower leaf having an arc-shaped seam line or folded line joined to the lower side of the middle filter cloth so as to have the same edge, And the upper leaf is folded flat on the middle filter cloth while the upper leaf spreads over the middle filter cloth while the lower leaf is folded flat on the middle filter cloth when stored. When used, extends downward to wrap the face along the jaw line, and the nose contour of the nose clip The left and right hemispheres near the edge of the upper leaf that is contacted along the contour of the face, and the chin line of the lower hemisphere form a breathing space which is blocked from the outside air around the nose. At the time of expiration, the mask is detached from the face side to facilitate exhausting.

In addition, Japanese Patent Application Laid-Open No. 10-2015-0126574 discloses a mask main body 10 formed by combining the outer cloth 12 and the lining cloth 14 so as to be overlapped with each other, and a hook band 16 Wherein the mask body 10 is provided in a solid state between the outer cloth 12 and the lining cloth 14 and is transformed into a viscous state when warmed by respiration to filter dust particles contained in the air, Wherein the filter member 20 is formed in a solid state by mixing an adhesive agent with starch, and an iron core member 30 whose shape is deformed by a predetermined external pressure is formed at an edge of the mask body 10 And an auxiliary mask 40 having a filter member 20 therein is provided in the mask body 10 and the auxiliary mask 40 is attached to the inner surface of the lining 14 through a fastening member 42 Wherein the fastening member (42) is removably coupled to the Velcro tape There is placed a disposable dust mask, characterized in that formed.

Patent Registration No. 10-0966272 (June 28, 2010) Japanese Patent Application Laid-Open No. 10-2015-0126574 (2012. 05. 09.) Registration Utility Model Bulletin No. 20-0392720 (2005. 08. 04.) Open Utility Model Publication No. 20-2016-0001206 (Apr. 12, 2016)

In the dust mask of the related art as described above, a mask body having a hook band that can be hung on the ear or the head is formed by combining the outer surface and the lining so that the outer surface and the lining are overlapped. And the filtering performance for various harmful particles contained in the air is greatly improved by constituting the filter element through a filter member for filtering very small harmful particles.

However, since the conventional dust mask of the prior art is weak in the physical structure of the filter, the filter structure is easily damaged physically when the filter is folded or collapsed repeatedly during handling or use, And the safety of use as a dust mask is significantly lowered.

In addition, the conventional dust mask has a limitation in that it can be used only by disposing due to the weak physical structure of the filter. In general, the lowest price of a dust mask sold on the market is about 2,000 won, which is expensive for a single product However, it is disadvantageous in that when the dust mask is continuously used for a certain period in a certain season, the economical burden thereof is small due to the property of being usable only for disposable use.

In addition, a general manufacturing method of a filter used in a dust mask is a microfibre filter formed by molding a nanofiber into a nonwoven fabric by molding in a meltblown manner. Such a microfibre filter takes a long time to spontaneously decompose, There is a disadvantage that environment pollution is caused due to the disposal of the dust mask when the use of the dust mask is increased.

The dust mask of the present invention has been developed to solve the conventional problems as described above. The dust mask of the present invention comprises a mask body 10 which is in close contact with a face portion so as to simultaneously cover the nose and mouth of the face, And a hook band (20) which is fastened to the back or back end so as to be tightly fixed to the face portion,

The mask body 10 includes a surface layer 100 composed of a continuous fine fiber layer including fine particles;

A first layer 201 having a positive charge coating on the inside and the surface thereof and a second layer 202 made of a polypropylene meltblown calendering nonwoven fabric having an average pore of 1 to 2 μm in close contact with each other, 200);

An electrostatic fiber layer (300) composed of a fine fiber layer permanently charged with static electricity;

A phytoncide coating layer 400 formed of a fibrous web such as a fibrous web by using short fibers obtained by spraying a liquid resin mixed with phytoncide to a filament obtained by melt-spinning and stretching a polyolefin resin;

And a lining layer (500) in direct contact with the face portion are sequentially stacked to form a single body.

The outer layer 100 is composed of a fine fiber layer in the form of a fibrous mat such as a fibrous web with a fiber diameter of 0.01 to 5 占 퐉,

Characterized in that fine particles composed of a material having activity, reactivity, absorbency, or adsorption property against harmful particles passing through the fine fiber layer are included in the entire void space or the surface of the fiber structure of the fine fiber layer.

According to the dust mask of the present invention, it is possible to effectively filter various harmful particles such as micro dust, bacteria and viruses through the above-mentioned structure, and at the same time, it is possible to accomplish the object of enabling repeated washing and reuse through physical property strengthening .

The dust mask of the present invention effectively filters various harmful particles in the air that harmful to humans such as bacteria, viruses, pollen and the like including fine dust through a filter having a physical multilayer structure, thereby preventing diseases caused by inhalation of harmful substances in the air There is an effect that can be.

In addition, when infected respiratory disease patients are worn, it is possible to effectively prevent secondary infections of infectious respiratory diseases by blocking the discharge of various infectious viruses or bacteria emitted from the wearer's respiratory system to the outside of the mask.

In addition, since the filtering performance can be maintained even after cleaning by using a filter having a physical multilayer structure, it is possible to repeatedly use the filter after cleaning, thereby greatly extending the service life, There is also an advantage that it can reduce.

1 is a perspective view of an embodiment of a sandstone mask of the present invention.
2 is a schematic view showing a configuration of a mask main body according to an embodiment of the yellow sand mask of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the construction and operation of a dust mask according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The dust mask of the present invention comprises: a surface layer 100 composed of a continuous fine fiber layer including fine particles; A first layer 201 having a positive charge coating on the inside and the surface thereof and a second layer 202 made of a polypropylene meltblown calendering nonwoven fabric having an average pore of 1 to 2 μm in close contact with each other, 200); An electrostatic fiber layer (300) composed of a fine fiber layer permanently charged with static electricity; A phytoncide coating layer 400 formed of a fibrous web such as a fibrous web by using short fibers obtained by spraying a liquid resin mixed with phytoncide to a filament obtained by melt-spinning and stretching a polyolefin resin; And a lining layer 500 in direct contact with the face portion are sequentially stacked to constitute one body.

The outer layer (100) comprises fine fibers in a continuous fine fiber layer, and the fibers of the fine fiber layer constituting the outer layer (100) are fine fiber layers in the form of a fiber web having a diameter of 0.01 to 5 탆, Or a fibrous mat such as a felt or a fibrous web, which is a fabric made by adhering or tangling a fiber structure by a machine or a chemical treatment such as a machine operation or a thermal bonding without going through a knitting process.

At this time, the fine fiber layer may be composed of a substantially single layer, or may be formed in such a manner that separate layers are closely adhered to each other continuously.

The fine particles include the fine particles in the entire void space or fibrous structure surface of the fine fiber layer of the fine fiber layer, and the amount of the fine particles includes 1 to 1000 g per square meter.

The fine particles may be made of a variety of useful materials that are inert, reactive, absorbent, or adsorbent materials having characteristics that can improve the filtration properties and the activity characteristics of the outer layer 100.

That is, the fine particles may be substantially inactive with respect to the harmful particles passing through the fine fiber layer constituting the outer layer 100, or the fine particles may be inactive with respect to the harmful particles that are active, reactive, It consists of material.

Such fine particles may be composed of a single species of fine particles or a mixture of non-like particles.

That is, the particulate may be selected from the group consisting of polystyrene or expanded styrene copolymers, nylon or nylon copolymers, polyethylene, polypropylene, ethylene, olefin copolymers, polyolefin polymers including propylene olefin copolymers, polymethyl methacrylate and polyacrylonitrile ≪ / RTI > and copolymers.

In addition, the fine particles may include a cellulosic material and a cellulose derivative bead. Such beads may be prepared from cellulose or cellulose derivatives such as methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, and the like.

The fine particles may include diatomaceous earth, zeolite, talc, clay, silicate, dissolved silicon dioxide, glass beads, ceramic particles, metal fine particles, metal oxides and the like.

In addition, the fine particles may be a mixture of fine particles different in composition particle size, particle shape, or some other particle aspect. For example, zeolite fine particles may be mixed with carbon fine particles, or ion exchange resin fine particles may be added to the carboxymethylcellulose fine particles And the like.

The surface layer 100 constructed as described above not only filters harmful gases but also harmful, inexpensive liquids of aqueous solutions, non-aqueous fluids, water, oils, and mixtures thereof, as well as fine solid impurities.

The bacteria removal layer 200 is formed by closely adhering a first layer 201 having a positive charge coating on its inner surface and a second layer 202 made of a polypropylene meltblown calendering nonwoven fabric, The layer 201 and the second layer 202 are in a form in which they are simply laminated and adhered instead of being adhered to each other by using an adhesive or the like. A fine space is formed between the first layer 201 and the second layer 202 Can exist.

The first layer (201) coated with the positive charge coating has a structure in which a positive charge is applied to the inside and the surface of a modified nonwoven fabric containing at least one selected from polypropylene fiber, polyethylene terephthalate fiber, polyethylene fiber, polyester fiber, nylon fiber and cellulose fiber Thereby forming a coating layer.

The modified nonwoven fabric may have an average fineness of 1 탆 to 10 탆 and an average pore of 7 탆 to 15 탆. The positive charge coating layer may include polyethyleneimine, diethylenetriamine, piperazine, dimethylenepiperazine, and diphenyl Amines, to form a positive charge coating layer with an average thickness of 0.01 mu m to 3 mu m.

The surface charge of the nonwoven fabric subjected to the positive charge coating treatment was 10 mV to 40 mV, the average water permeation amount was 3,000 to 4,200 ml / cm 2 min min bar bar, the cumulative purified water amount was 5,000 L to 6,200 L, the virus removal performance was 3.2 log or more, .

The positive first layer 201 may be composed of a substantially single layer or may have a multi-layer structure in which separate layers are in close contact with each other. In the case of a multi-layer structure, May exist.

The second layer 202 is made of a polypropylene meltblown-calendering nonwoven fabric and is in close contact with the front surface or the rear surface of the first layer 201.

The polypropylene meltblown-calendaring nonwoven fabric is produced by rolling a polypropylene meltblown nonwoven fabric under a pressure of 25 kg / cm 2 to 45 kg / cm 2 using a roller at a temperature of 60 ° C to 100 ° C to perform calendering And the average pore diameter of the polypropylene meltblown nonwoven fabric before calendering is 8 mu m to 14 mu m. When the average pore size is less than 1 mu m after calendering, the water permeation amount is reduced, If the average pore is more than 2 mu m, the water permeation amount is increased, but the bacterial removing ability may be lowered. Therefore, it is preferable to form the pores so as to have an average pore size of 1 mu m to 1.8 mu m.

The bacteria-removing layer 200 having the above-described structure is formed by closely adhering the first layer 201 and the second layer 202 having different pore sizes, thereby increasing the residence time per unit volume of the fluid, By effectively increasing the potential, effective elimination of viruses and bacteria is possible.

In addition, it has a high surface charge through a positive charge coating, and has an advantage of excellent adsorption and removal ability against viruses having nano-sized anions.

The electrostatic fibrous layer (300) is formed by charging a continuous fine fiber layer with static electricity, and the fibers of the fine fiber layer constituting the electrostatic fiber layer (300) are made of electret fibers having a diameter of 3 to 30 μm A fibrous mat such as a felt or a fibrous web, which is a fabric made by adhering or tangling a fiber structure by a machine or a chemical treatment such as a machine operation or a thermal bonding without going through a process of weaving, weaving or knitting.

At this time, the fine fiber layer may be composed of a substantially single layer, or may be formed in such a manner that separate layers are closely adhered to each other continuously.

Also, the fine fiber layer may be charged electrostatically during, or after being formed into a nonwoven web, and the charged fibers may be electrostatically charged, such as by carding or air laying, Lt; RTI ID = 0.0 > nonwoven < / RTI > web.

The electrostatic fiber layer 300 constructed as described above mechanically and electrostatically collects fine particles having a size of about 0.1 탆 to about 10 탆 and an electrostatic charge layer 300 having electrostatic charge pulls the fine particles The fine particles are collected in the electrostatic fibrillation layer 300 filled with the electrostatic charge, so that excellent filtering performance against fine particles can be exhibited.

The phytonchide coating layer (400) is obtained by melt-spinning a polyolefin-based resin, stretching filaments obtained by stretching the filaments, spraying a liquid resin mixed with a functional radial emulsion and a phytoncide, and fixing the staple fibers without weaving, weaving or knitting It is made up of a fibrous mat such as a felt or a fibrous web, which is a fabric made by bonding or tangling a fiber structure by a machine or chemical treatment such as a machine operation or a thermal bonding.

In the calender bonding method, monofilaments are carded at a speed of 100 to 150 mpm, and then a nonwoven web is prepared, and the web is passed between the hot rolls set at 130 to 165 DEG C, do.

The liquid resin is preferably applied in an amount of 1 to 10% by weight of the polyolefin-based staple fibers, and the phytoncide contained in the liquid resin is preferably contained in the liquid resin in an amount of 1 to 50% by weight.

The phytonchide coating layer 400 may be composed of a substantially single layer or may be formed in such a manner that separate layers are closely contacted with each other.

It is preferable to use the phytoncide extracted from the stems or leaves of the garment, but it is not limited to this, and it is possible to substitute the phytoncide extracted from the cotton, pine, pine, juniper,

On the other hand, phytoncide is a compound word of "phyton" meaning plant and "cide" meaning killing, and refers to a directional substance containing sterilization and insecticidal components, which is sprayed by a tree to protect itself from various insects and bacteria, Its main component is an organic compound of the terpene system.

The chemical structure of the terpene is a kind of hydrocarbons formed by bonding two or more isoprene (C5H8), such as monophenol isoprene (2) and sesquiterpene (3). Plants generally have a photosynthetic action of solar energy 0.01 to 5% of terpene is synthesized.

It has been reported that terpenes are antimicrobial, sedative, deodorizing, and stress-relieving, and that phos- phitchide inhaled significantly reduces the concentration of cortisol, a stress hormone, Sedation, pleasant feeling, extended sleep time, and helps you get a good night's sleep.

It has also been shown to improve blood circulation and to be effective in hyperlipidemia and thromboembolism, and it has also been known as a powerful antimicrobial effect that does not cause resistance in the human body. Phytoncide, which is a natural substance, is known to be most effective in preventing allergies without causing side effects, and is most effective in avoiding house dust mites up to almost 90%. Therefore, when a mask having the phytonchide coating layer 400 is used, do.

The lining layer 500 is in direct contact with the face portion, and is generally formed of a nonwoven fabric or a cotton fabric as a fiber material that can provide a comfortable feeling to the wearer and effectively block dust and the like.

In order to integrate the outer layer 100 constituting the dust mask of the present invention and the bacteria removing layer 200, the electrostatic fiber layer 300, the phytoncide coat layer 400 and the lining layer 500 as described above, Layered nonwoven fabric such as a heat treatment or a thermal bonding process may be integrally formed by mutual ultrasonic bonding at a plurality of spots occupying less than 5% of the nonwoven filter web surface. However, Of course, can be selectively used.

The dust mask of the present invention configured as described above can effectively filter various harmful particles such as bacteria and viruses including fine dust contained in the air through the physical characteristics through the multilayer filter structure rather than chemical characteristics, Since the filter structure has excellent antibacterial retention and durability at the same time, it can be reused repeatedly after washing, which is very economical and environmentally advantageous.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10: mask body
20: hook band
100: Outer layer
200: Bacteria removal layer
201: First floor
202: Second layer
300: electrostatic fiber layer
400: Phytoncide coating layer
500: lining layer

Claims (2)

A hook body 20 provided on both sides of the mask body to tightly or tightly fasten the mask body to the back or back of the body so as to be closely attached to the face of the mask body, Wherein the dust mask comprises:
The mask body 10 includes a surface layer 100 composed of a continuous fine fiber layer including fine particles;
A first layer 201 having a positive charge coating on the inside and the surface thereof and a second layer 202 made of a polypropylene meltblown calendering nonwoven fabric having an average pore of 1 to 2 μm in close contact with each other, 200);
An electrostatic fiber layer (300) composed of a fine fiber layer permanently charged with static electricity;
A phytoncide coating layer 400 formed of a fibrous web such as a fibrous web by using short fibers obtained by spraying a liquid resin mixed with phytoncide to a filament obtained by melt-spinning and stretching a polyolefin resin;
And a lining layer (500) in direct contact with the face portion are sequentially laminated to form a single body. The method of claim 1, further comprising:
The outer layer 100 is composed of a fine fiber layer in the form of a fibrous mat such as a fibrous web with a fiber diameter of 0.01 to 5 占 퐉,
Wherein the fine fiber layer contains fine particles composed of a material having activity, reactivity, absorbency, or adsorption to the harmful particles passing through the fine fiber layer on the entire void space or on the surface of the fiber structure in the fiber structure of the fine fiber layer.

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