KR102259035B1 - Air supplied respirator set and making system and method of mask non woven fabric of the same - Google Patents

Abstract

The present invention relates to an air mask set and a device and a method for manufacturing a mask non-woven fabric thereof, and more specifically, to an air mask set comprising: a mask (10); an oxygen tank (20); and an air hose (30). The mask (10) includes: an outer skin which faces an outside of a wearer and includes a first socket unit in one side; a plurality of mask non-woven fabrics which include a facial adhesion skin which adheres to a face of the wearer; and a mask main body which has a fine interval in a state of overlapping the outer skin and the facial adhesion skin and is formed by sealing borders of the outer skin and the facial adhesion skin. The oxygen tank (20) includes oxygen inside to supply the oxygen to the mask and includes a second socket unit in one side. The air hose (30) allows a first socket nut connected to the first socket unit of the mask to be provided in one end unit, provides a second socket nut connected to the second socket unit of the oxygen tank in the other end unit, and delivers the oxygen of the oxygen tank to the mask. Therefore, the present invention provides a high fine dust response effect, excellent breathability, and a low leakage rate; is continuously used through a device for receiving fresh air to a human body when there is no more fine dust blocking effect in a continuous fine dust environment; normally acts as a normal health mask by allowing a sufficient escape time when exposed to a dangerous environment; minimize exposure to a dangerous situation in the human body in a special environment; and being easily applied unlike a conventional oxygen container connection type mask having an expensive and rugged structure to provide the excellent fine dust response effect.

Description

AIR SUPPLIED RESPIRATOR SET AND MAKING SYSTEM AND METHOD OF MASK NON WOVEN FABRIC OF THE SAME

The present invention relates to an air-sending mask set and an apparatus and method for manufacturing a non-woven mask fabric therefor, and more particularly, to a mask set for supplying oxygen to the mask by connecting a mask and an oxygen cylinder through an air-gas hose, and an apparatus and method for manufacturing the same, and a mask non-woven fabric manufacturing apparatus and it's about how

In general, a mask is often used for the purpose of protecting a wearer's respiratory tract from harmful external air.

These masks have been manufactured and used in a knitted form using natural materials such as cotton, rayon, or mixed fibers with synthetic materials. However, these knitted masks have excellent self-stretching properties, so they are comfortable to wear and breathe, but block fine dust. Because of this, it was difficult to actually use it as a mask for blocking ultra-fine dust, and it is simply used as a mask for hygienic aspects, and even in the case of a non-woven material that has been used a lot recently, in the case of a low-cost straight mask (dental mask type), Not only is it difficult, but it also has poor facial adsorption, and thus the leak rate is high.

In addition, with the improvement of the mask structure technology, 2D and 3D type three-dimensional masks are used most recently as the most usable products by characterizing the materials used as well as the structural characteristics to increase the barrier properties of ultrafine dust and the wearing comfort. .

However, even in the case of such a three-dimensional mask, it uses a melt blown nonwoven fabric, which is an electrostatic nonwoven fabric used to obtain high filtration efficiency, so that the blocking effect is excellent, but the inhalation resistance is high, so breathing is difficult, so the elderly or infants have low efficiency It is a reality that recommends the use of masks.

In particular, in the case of a user wearing glasses, fogging, etc. appears, complaining of inconvenience in use.

In addition, when ultrafine dust is very high, clean air cannot be sufficiently inhaled only by wearing a mask while going out for a long time.

In addition, not only the performance of the mask is deteriorated, but also due to the high adsorption power during respiration, the resistance of ultrafine dust is increased, and there is a high possibility that it enters the respiratory tract through the gap of the face adsorption unit, thereby adversely affecting health.

On the other hand, looking at the data disclosed on the mask of the prior art, in Korean Patent Publication No. 10-2015-0118655, graphene oxide, cationic graphene oxide, porous silica, etc. are coated on a nonwoven fabric on a filter medium to make ultra-fine A method for manufacturing a mask that removes negatively charged substances such as dust as well as hydrophobic environmental toxic substances and has a sterilizing action to suppress bacterial growth was presented.

This was intended to obtain additional blocking effects such as odors as well as fine dust in the past, but problems such as breathing inconvenience and harmfulness due to residues after coating can be expected.

In addition, as a prior patent for improving respiration, there is Japanese Patent 4372638 (Application No. 3133876).

This is a functional mask manufacturing invention that maintains a certain shape of the mask and prevents condensation inside the mask while not compressing the nose when worn. Breathability was improved in terms of shape, such as the air exhaust emboss pattern at the bottom for the ventilator, but there was a problem in commercialization in terms of price and production, such as leakage during inhalation and the shape of vents and embossed patterns.

And, in Korean Patent Application Laid-Open No. 10-2015-0047776, there is a similar invention of manufacturing a mask with a 2D shape. The shape is hemispherical, and the central part protrudes to the front to secure free space, and the central part is formed of a breathable material and maintains the free space. It is manufactured in a form that can be used, and it is made of a material that is difficult to block ultra-fine dust in high efficiency.

In addition, Korean Patent Application Laid-Open No. 10-2017-0104194 is manufactured in a form that embraces a face shape rather than a 2D shape or a fixed hemispherical type, and includes a member for adjusting a string to improve facial adsorption and improve breathing performance. A method for improving exhaust performance by attaching

However, in this method, it is difficult to secure competitiveness as a general-purpose product in price, productivity, and ease of use by installing a separate exhaust device on the existing mask and causing a decrease in wearing comfort due to the strap adjustment device, but also wear convenience and breathing for the purpose of the present invention. It had problems such as being difficult to obtain at the same time ease.

Therefore, in order to solve this problem, there is a need to develop a mask having a structure that can prevent ultrafine dust from entering the respiratory tract and breathe fresh air by connecting a small oxygen cylinder that can be easily stored and transported with an existing mask. .

This type of oxygen supply has the advantage of being able to use the existing mask, and has the characteristic that it can be used in a hazardous industrial environment for a short time depending on the capacity of the oxygen tank as well as for general use.

However, in the case of the conventional oxygen tank detachable mask, it is composed of a rubber material that can be attached to and detached from a tank made of large-capacity aluminum or carbon reinforced material, so it has an unsuitable shape for use in a general environment.

In addition, it is mainly used for extreme uses such as environments in which oxygen concentration is rare, fire and disaster sites, and extreme leisure.

And, the compressed air intake system through the external valve of the prior art is expensive as most of the products used in firefighting or special environments are expensive and there is a limit to general use.

Republic of Korea Public Utility Model No. 1998-043002

The present invention was devised to solve this problem, and even if the function of the mask deteriorates due to problems such as deterioration in performance and difficulty in breathing by using an existing health mask in an extremely polluted environment of ultrafine dust, pure oxygen An object of the present invention is to provide a gas-supplying mask set that enables connection between a mask and an oxygen cylinder in order to continuously respond to fine dust and maintain breathing and physiological environment, and an apparatus and method for manufacturing a non-woven mask therefor.

In addition, even if ultra-fine dust is blocked and respiration is maintained, various problems in use and body such as an increase in respiratory resistance that occur after long-term use and a lack of oxygen in an extreme polluted environment are solved by inhaling pure air, and especially the immunity is improved. It made it easy to use even at this young age, and furthermore, it can be replaced in a short time depending on the usage time of the compressed container in various industrial environments and harmful environments where the existing large and inconvenient compressed oxygen tank mask system is used, so ultra-fine dust in the general environment. Another object of the present invention is to provide an air-sending mask set and an apparatus and method for manufacturing a non-woven mask therefor so that pure compressed air capable of responding to and responding to a harmful industrial environment is supplied.

In addition, basically, the oxygen tank can be attached and detached on the surface of the existing KF series health mask, so that when breathing difficulties or fine dust removal performance is reduced in an extremely polluted environment, the oxygen tank can be easily installed when a bad effect on the respiratory tract is predicted. Another object of the present invention is to provide a gas-supplying mask set and an apparatus and method for manufacturing a non-woven mask therefor, which can be combined to improve respiration and supply clean air.

In addition, the structural design of the mask has been rearranged so that the user can breathe comfortably due to the high barrier properties of ultrafine dust and excellent exhaust performance when wearing breathing, and characterizing the performance and structure of each arranged nonwoven fabric to provide excellent high-performance and high-respirability In order to manufacture an ultra-fine dust-response mask and to improve breathing ease in an extremely dangerous ultra-fine dust environment, a detachable valve is installed on the face of the mask to connect it to a small oxygen tank, thereby securing safety in a hazardous environment of fine dust. Another object of the present invention is to provide a mask set and an apparatus and method for manufacturing a non-woven mask therefor.

In addition, a structure was designed to reduce the density of pores by reducing the weight of the previously applied layer nonwoven fabric, and to increase respiration by using a bulky structure nonwoven fabric. In particular, the bulky structure nonwoven fabric applied to the third layer has high dielectric properties. It is designed to not only improve the durability of the mask by increasing the collection efficiency but also to prevent it from being inhaled into the human body by making it easy to adsorb ultrafine dust inhaled by respiration to the fiber surface and prevent it from being easily detached. After mixing and spinning, it is manufactured in the form of short fibers and then manufactured in the form of AT nonwoven fabric to increase the bulkiness of the nonwoven web and to improve the air permeability and filtration efficiency of the filter media. It has another purpose.

In addition, it blocks at least 95.0% of fine dust with a filtration efficiency of 0.3um or less, and breathes fresh air in an extreme fine dust environment for at least 1 hour according to a pressure loss of 10mmHg or less and oxygen capacity, so it is sufficient even in extreme environments. Another object of the present invention is to provide a set of air blow masks capable of blocking high-efficiency fine dust provided with avoidable time, and an apparatus and method for manufacturing a non-woven mask therefor.

As such, the air supply mask set according to an embodiment of the present invention is provided with a plurality of mask non-woven fabrics including an outer skin facing the outside of the wearer and having a first socket portion on one side, and a face-adhesive skin that is in close contact with the wearer's face a mask including a mask body in which the outer skin and the face-adhesive skin are overlapped with each other at a micro-interval and the edges of each other are sealed; an oxygen cylinder having a second socket part on one side and having oxygen built therein to supply oxygen to the mask; A first socket nut connected to the first socket portion of the mask is provided at one end, and a second socket nut connected to the second socket portion of the oxygen cylinder is provided at the other end to deliver oxygen from the oxygen cylinder to the mask. Including;, but between the outer skin and the face-adhesive skin, the first and second endothelium are disposed, and the mask is the first and second endothelium and the face close to the outer skin, which is a single layer of the mask body, in three layers. As a predetermined buffer space is formed by the oxygen supplied between the close-fitting skin, the oxygen that spreads in the direction of the outer skin blocks fine dust flowing in from the outside, and the oxygen that spreads in the direction of the face-adhesive skin can be supplied to the user, and the oxygen cylinder Silver, an internal space in which the oxygen is stored and having an oxygen opening on one side; a valve housing which shields the oxygen opening and has an opening through which the oxygen is ejected and a discharge port communicating with an adjacent part of the opening and closing opening to discharge the oxygen to the air supply hose through the second socket; the second socket portion provided at the distal end of the discharge port; an opening/closing valve for opening and closing the opening/closing port; In a state in which one side is connected to the on-off valve and the other side protrudes to the outside of the valve housing, the on-off valve flows in and out along the axial direction of the oxygen cylinder to open and close the opening and closing port, so that the user wears the mask. a pressure pin to be supplied with oxygen by pressurizing as much as necessary; and a valve spring elastically supporting the bottom surface of the on-off valve.

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And, the mask non-woven fabric manufacturing apparatus of the air-gas mask set according to an embodiment of the present invention, using the same or heterogeneous two-component polymer, the mask for producing the outer skin, the face-adhesive skin, the first endothelium and the second endothelium of the mask body a spinning unit having a spinning nozzle for spinning melt-blown composite spun fibers to produce a nonwoven fabric; a collector for collecting the composite spun fibers spun from the spinning nozzle; a conveyor belt disposed on the collector to transport the composite spun fibers collected and stacked on the collector to a predetermined place; A mask non-woven fabric manufacturing apparatus of a mask set including a; a winder for winding the composite spun fiber transferred through the conveyor belt.

In addition, in the apparatus for manufacturing a non-woven mask of a mask set according to an embodiment of the present invention, the spinning unit may use two different polymers before spinning the composite spun fiber through the spinning nozzle, so that the two components Two extruders may be further provided for discharging the molten polymer obtained by melt-compressing the polymer from the spinning nozzle to stretch and microfine the molten polymer with high-temperature and high-pressure air.

In addition, in the mask non-woven fabric manufacturing apparatus of the air blow mask set according to an embodiment of the present invention, the spinning unit may be further provided with a metering pump for distributing the molten polymer and discharging it through the distribution plate of the spinning nozzle. have.

In addition, in the apparatus for manufacturing a non-woven mask of a mask set according to an embodiment of the present invention, a cooler is further provided between the spinning unit and the collector to cool the molten polymer that is stretched and ultra-fine through the spinning nozzle. can

And, according to an embodiment of the present invention, there is provided a method for manufacturing a mask nonwoven fabric of a gas mask set, comprising the steps of: melt-blowning a composite spun fiber through a spinning nozzle using a two-component polymer; Cooling and curing the meltblown composite spun fiber with a cooler to produce the mask nonwoven fabric for manufacturing the outer skin, the face-adhesive skin, the first endothelium and the second endothelium of the mask body; Collecting the cooling-hardened composite spun fibers in a collector and evolving them into a fibrous web; a method of manufacturing a mask nonwoven fabric for a mask set containing air.

In an embodiment of the present invention as described above, the air-blow mask set and the mask non-woven fabric manufacturing apparatus and method thereof, unlike the conventionally manufactured mask, the mask produced with a removable valve and face coating treatment has the effect of counteracting fine dust of the existing mask. Not only is it large, but it has excellent respiration, low leakage rate, and when there is no further fine dust blocking effect in a continuous fine dust environment, it can be used continuously through a device that can introduce fresh air into the human body, and it can be used continuously even when exposed to hazardous environments. By giving an escape time, it is possible to apply the role of a general health mask in normal times and to minimize exposure to dangerous situations of the human body in special environments, so it is easy to apply and responds to fine dust unlike the existing expensive and clunky oxygen container connection type mask. Effects such as being excellent can be obtained.

In addition, it can be easily replaced at a low price, and by enabling repeated oxygen supply through attachment and detachment, effects such as improving competitiveness in commercialization can be obtained.

In addition, it is possible to obtain effects such as being able to improve recyclability by using 100% PP material with a material composition differentiated from existing nonwoven materials after use.

In addition, since it can be applied not only to general households but also to existing industrial fields, effects such as being able to be used in various industries and uses such as environment, architecture, civil engineering, and building can be obtained.

1 is a perspective view showing a gas mask set according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a gas mask set according to an embodiment of the present invention.
Figure 3 is a cross-sectional view showing a gas mask set according to an embodiment of the present invention.
Figure 4 is a schematic diagram showing an apparatus for manufacturing a non-woven mask mask set according to an embodiment of the present invention.
5 is a flowchart illustrating a method for manufacturing a mask non-woven fabric of a mask set for sending air according to an embodiment of the present invention.

Hereinafter, as shown in FIGS. 1 to 3 , the gas sending mask set according to an embodiment of the present invention includes a mask 10 , an oxygen cylinder 20 , and a sending hose 30 .

The mask 10 faces the outside of the wearer and has a first socket nut 31 and threaded connection with the first socket nut 31 of the air supply hose 30 on one side of the outer shell 11a having a first socket portion 11a1 in the form of a screw, A plurality of mask non-woven fabrics are provided including a face-adhesive skin 11d that is in close contact with the wearer's face, and the outer skin 11a and the face-adhesive skin 11d have a fine distance between each other in an overlapping state, and the edges of each other are It has a structure including a sealed mask body 11 and an earring strap 12 connected to both ends of the mask body 11 .

Non-explained reference numerals 11b and 11c indicate the first and second endothelium disposed between the outer skin 11a and the face adhesion skin 11d.

The oxygen cylinder 20 has a container structure in which oxygen is built in to supply oxygen to the mask 10 and has a second socket part 21 on one side.

More specifically, the oxygen cylinder 20 includes the second socket portion 21, the cylinder body 22, the valve housing 23, the on/off valve 24, the pressure pin 25, and the valve spring. (26).

Here, the second socket part 21 has a screw tube shape that is screwed to the second socket nut 32 of the air supply hose 30 .

And, the cylindrical body 22 is provided with an internal space in which oxygen is stored and has a cylindrical container structure having an oxygen opening 22a on one side.

In addition, the valve housing 23 shields the oxygen opening 22a and communicates with an opening 23a through which the oxygen is ejected and an adjacent portion of the opening 23a to discharge the oxygen to the outside. ) has a structure with

In addition, the opening/closing valve 24 is connected to the lower end of the pressure pin 25 to open and close the opening/closing port 23a.

In addition, the pressure pin 25 has a vertical cylindrical shape, the lower end is integrally connected to the on-off valve 24 and the upper end protrudes to the outside of the valve housing 23 toward the barrel body 22 . It is structured so that it can be lifted up and down toward the

In addition, the valve spring 26 performs a function of elastically supporting the bottom surface of the opening/closing valve 24 elastically.

The air supply hose 30 has a first socket nut 31 coupled to the first socket 11a1 of the mask 10 provided at one end, and a second socket portion of the oxygen cylinder 20 at the other end. A second socket nut 32 that is screwed to the 21 is provided and has a corrugated pipe structure for transferring oxygen from the oxygen cylinder 20 to the mask 10 .

An example of the use of the air supply mask set according to an embodiment of the present invention according to this configuration is as follows.

First, after the user wears the mask 10 on the face, the pressure pin 25 is pressed downward to supply oxygen to the mask 10 .

When that happens, the pressure pin 25 is lowered so that the opening/closing port 23a in the valve housing 23 is opened while the opening/closing valve 24 connected to the lower end is lowered integrally. After oxygen is guided to the discharge port 23b along the opening and closing port 23a, it is supplied to the mask 10 through the air supply hose 30 connected to the second socket part 21 at the tip thereof.

Then, the mask 10 is formed by the oxygen supplied between the outer shell 11a, which is a single layer of the mask body 11, and the first and second endothelium 11b and 11c and the face-adhesive skin 11d that are close to each other in three layers. As a predetermined buffer space is formed, oxygen spreading in the direction of the outer skin 11a blocks fine dust, etc. flowing from the outside, and oxygen spreading in the direction of the face adhesion skin 11d can be supplied to the user.

In this way, the user can receive oxygen by manipulating the pressure pin 25 as needed while wearing the mask 10 .

On the other hand, looking at the non-woven mask manufacturing apparatus of the air-sending mask set according to an embodiment of the present invention according to this configuration as follows.

As shown in FIG. 4, the apparatus for manufacturing a mask nonwoven fabric of the air blower mask set of the present invention includes a spinning nozzle 113 for spinning melt-blown composite spun fibers using the same or heterogeneous two-component polymers 111 and 112. A spinning unit 110 having a, a collector 120 for collecting the composite spun fibers spun from the spinning nozzle 113, and a composite spinning disposed on the collector 120 to collect and stack on the collector 120 It includes a conveyor belt 130 for transferring the fibers to a predetermined place, and a winder 140 for winding the composite spun fibers transferred through the conveyor belt 130 .

And, the spinning unit 110, the molten polymer obtained by melt-compressing the two-component polymers 111 and 112 so that two different types of polymers can be used before spinning the composite spun fiber through the spinning nozzle 113. Two extruders 114 are provided for stretching and micro-refining the molten polymer with high-temperature and high-pressure air by discharging from the spinning nozzle 113 .

Meanwhile, between the spinning treatment and the high-temperature and high-pressure treatment step, the step of electrifying the composite spun fiber may be further included.

In addition, the spinning unit 110 is provided with a metering pump (not shown) for distributing the molten polymer and discharging it through the distribution plate 115 of the spinning nozzle 113 .

In addition, a cooler 150 is provided between the spinning unit 110 and the collector 120 to cool the molten polymer that has been stretched and ultra-fine through the spinning nozzle 113 .

As schematically shown in FIG. 5 , the method for manufacturing a mask nonwoven fabric of a gas mask set through the mask nonwoven fabric manufacturing apparatus of the gas mask set of the present invention according to this configuration is prepared and composited with two-component polymers (elastomers) 111 and 112 Including the spinning step.

And, the present invention uses a homogeneous or heterogeneous two-component polymer that can be manufactured into a fibrous web by meltblown composite spinning.

The first step (S1) of the present invention is a single or two or more elastomers selected from the group consisting of melt-blown polypropylene-based elastomers, polyester-based elastomers and polybutyl terephthalate-based elastomers having 19 to 80% by weight of fiber forming ability. is a first component (cis or core component, first side component), 0.5 to 2% by weight of a sulfone-based hydrophilic agent is mixed with the first component, and 19 to 80% by weight of the compound spinning meltblown possible. Melt-blown using a one-component elastomer or polyamide-based elastomer as the second component (core or sheath component, second side component) and using a conventional meltblown composite spinning nozzle through a composite spinning fiber of cis-core or side-by-side. It is a fortune step.

The mask non-woven fabric manufacturing method of the present invention, as schematically shown in FIG. 4, is a facility in which a cooler 150 is attached between a spinning nozzle 113 and a collector 120 in a conventional meltblown facility. use.

That is, the molten polymer (elastomer, first component, second component) melt compressed through the two extruders 114 so that two different types of polymers can be used is dispensed by a metering pump, and then the spinning nozzles The elastomer discharged from the distribution plate 115 of 113 is stretched and micro-fine with high-temperature and high-pressure air, and then the micro-fine fibers are attached to the conveyor belt 130 in which the collector 120 is installed while cooling. After stacking, a facility for winding on the winder 140 is used.

At this time, the melt-blown nonwoven fabric is affected by the melting temperature, the discharge air temperature, the discharge air pressure, the cooling air temperature, and the distance of the conveyor belt 130 from the spinning nozzle 113, but the condition with the greatest influence is the discharge It is the distance from the air pressure and the spinning nozzle 113 to the conveyor belt 130 .

That is, under the same premise for all other conditions, when the discharge air pressure is large, the strength is improved by increasing the crystal area in the fiber, and the distance from the spinning nozzle 113 to the conveyor belt 130 and the collector 120 is As the length increases, the viscous properties of the discharged molten aggregate can be reduced as the bonding point between fibers increases and the cooling time increases.

In addition, in the case of the composition ratio of the spinning nozzle 113 and the polymers 111 and 112 in the composite fiber of the present invention, the strength increases as the polymer component in the portion other than the absorbent component increases, and in the case of the sheath core type, the absorbent property is applied to the sheath portion. absorbency is increased.

In addition, 0.5 to 2% by weight of the sulfone-based hydrophilic agent is mixed with the first component based on the total weight. When the hydrophilic agent is 0.5% by weight or less, the absorbency is lowered, and conversely, when it exceeds 2% by weight, it is mixed with the first component. Compatibility may be an issue.

Meanwhile, in meltblown composite spinning, it is possible to manufacture nano-scale fibers of 1 micro level through fine nozzles such as 25 holes, 35 holes, 50 holes, and 100 holes per inch according to the adjustment of spinning conditions.

The fiber diameter of the constituent filaments of the nonwoven fabric produced in this way is about 1 to 10 µm, so that the nonwoven fabric is excellent in strength.

In the present invention, the ratio of the core component (the first component polymer) and the cis component (the second component polymer) can be varied according to the use or function or physical properties of the nonwoven fabric to be produced.

Of course, inorganic and organic additives may be added to the polymer (elastomer) of the present invention to control spinning viscosity and improve durability.

Since the types and effects of these additives are well known, they will not be described in detail here.

And, the present invention includes the steps of cooling and curing the meltblown composite spun fiber and forming a web (S2, S3).

That is, in the method of the present invention, before the melt-blown composite spun fiber reaches the collector 120, the polymer of the sheath component is heated with low-temperature air by the cooler 150 to heat the melt-blown composite spun fiber. and curing (S2).

Thereby, the composite spun fiber is cooled and hardened to improve shape stability.

Here, although the low-temperature airflow contacts the spun fibers, the curing here is not complete because the meltblown composite spun fibers fall downward at high speed, and approximately 10 to 20% of the fibers are cured as they are molten. Collected in the collector at the lower side together with the finished fibers, the entire composite fiber evolves into a fibrous web (S3).

The temperature of the cooling air flow varies depending on the type of polymer used or the discharge rate, but is approximately 5 to 25°C.

Hereinafter, looking at the examples are as follows.

[Example 1]

As one component (cis), a polypropylene-based elastomer was blended with a sulfone-based hydrophilic agent (IRGASURF HL 560, manufactured by CIBA SPEZIALITATENCHEMIE AG), dried at 50° C. for 4 hours, and pre-treated.

After undergoing the same pretreatment as the first component using polypropylene-based elastomer as two components, melt temperature 250℃, air pressure 6.0psi, air temperature 250℃, DCD 17cm, 50g/ using a sheath-core nozzle (35holes/inch) A composite spun meltblown nonwoven fabric having a weight of m2 was prepared (see Table 1).

[Example 2]

As one component (cis), a polypropylene-based elastomer was blended with a sulfone-based hydrophilic agent (IRGASURF HL 560, manufactured by CIBA SPEZIALITATENCHEMIE AG), dried at 50° C. for 4 hours, and pre-treated.

After pre-treatment with a moisture content of 150 ppm or less using polyamide resin as two components, melt at a melting temperature of 250 ° C for one component and 280 ° C for a second component at an air pressure of 6.0 psi, an air temperature of 280 ° C, and DCD 17 cm. A nonwoven fabric having a weight of 50 g/m 2 was prepared using a sheath-type nozzle (35 holes/inch). (See Table 1)

[Example 3]

It was the same as in Example 2 except for the amount of the sulfone-based hydrophilic agent used. (See Table 1)

And, looking at the comparative example is as follows.

[Comparative Example 1]

Using 100% polypropylene resin in the same manner as in Example 1, a nonwoven fabric having a weight of 50 g/m2 was prepared under the same conditions in the case of pretreatment and manufacturing process (see Table 1).

[Comparative Example 2]

A 100% polypropylene resin was used in the same manner as in Example 1, and in the case of pretreatment and manufacturing process, the same conditions, but spraying a 20% diluted solution of a hydrophilic emulsion in distilled water during fiber spinning was prepared and then dried. At this time, the weight of the prepared nonwoven web was 50 g/m2 (see Table 1).

[Comparative Example 3]

In the same manner as in Example 2, 100% polyamide resin was used and the moisture content was pretreated below 150 ppm, and in the case of the manufacturing process, a nonwoven fabric having a weight of 50 g/m2 was prepared under the same conditions. (See Table 1)

The physical properties of the nonwoven fabric prepared by the above Examples and Comparative Examples are summarized in the table below.

* MD: Mecanic Direction, CD: Cross Direction

Each physical property measurement method in the above table is as follows.

(1) Basis weight was measured by ASTM D 3778 method.

(2) Nonwoven fabric strength was measured according to ASTM D 1882.

(3) The nonwoven fabric absorption rate was measured according to JIS L 1018.

(4) The absorption amount of the nonwoven fabric was measured according to JIS L 1018.

Here, in the case of Examples 1, 2, and 3, it can be seen that the initial absorption rate is faster and the absorption amount increases as the content of the sulfone-based hydrophilic agent in the sheath layer increases and the polyamide resin in the core layer increases.

It can be seen that, basically, a large amount of sulfone-based hydrophilic agent is contained in the sheath layer, and it is increased by the hydrophilic group contained in the polyamide resin.

Comparing Example 3 and Comparative Example 3, it can be seen that the sulfone-based hydrophilic agent added to the sheath layer of the polypropylene resin, which is a hydrophobic polymer, has superior absorption performance (absorption rate and absorption amount) than the hydrophilic group of the polyamide resin itself.

Therefore, in the case of a sulfone-based hydrophilic agent, it is assumed that it is caused by introducing a large number of hydrophilic groups in the hydrophobic resin.

In particular, the mask body 11 of the present invention will be described in detail as follows.

The mask body 11 of the present invention has four nonwoven layers, and as a core layer, the MB nonwoven fabric of the second layer plays a major role in the ultrafine dust blocking effect and respiration improvement effect, and the third layer is also somewhat high and has excellent bulkiness. By using MB nonwoven fabric, a synergistic effect of increasing filtration efficiency is obtained, and other layers of nonwoven fabric acquire some form stability and micro-blocking effect.

The ultra-fine dust blocking mask is made of melt blown (MB) non-woven fabric with electrostatic properties to have the performance to block both fine dust (10.0 um or less) and ultra-fine dust (2.5 um or less), which are the general standards. It is used as a core material, and spunbond (SPUNBOND, SB) or thermal bond (THERMAL BOND, TB) is used as a support.

It is usually composed of 3 or 4 layers, and the efficiency of blocking fine dust or ultrafine dust is determined according to the performance of the MB nonwoven fabric, and the SB used as a support is generally polyprophylene (PP) or Polyester (PET) to give the shape stability of the mask. ) 50-60gsm material is used, and it has excellent surface smoothness and is also used as a face adhesive nonwoven fabric because of its low fiber lint generation.

In the case of MB, which is used as the main core material, PP material is used, and it is a core technology that gives practical blocking performance that doubles the collection performance of ultra-fine dust through electrostatic treatment in the process. Although the barrier properties depend on the additive formulation of the material and the electrostatic treatment method, a technology to control the porosity is also required for the physical blocking effect of fine dust. It also acts as a factor determining mask performance.

In Korea, according to the approval of the Food and Drug Administration, mask products with ultra-fine dust blocking performance are classified into three types: KF 80, 94, and 99, which means that they have 80%, 94%, and 99% of ultra-fine dust blocking performance, respectively. .

Non-woven fabric with high blocking performance is distributed in a fine pore structure to physically block ultrafine dust, and it is necessary to obtain the effect of collecting ultrafine dust by giving it an electrostatic property to collect dust. There is a problem.

Therefore, in the case of the elderly or infants who have difficulty breathing, it is difficult to wear a high-performance mask, so the Food and Drug Administration recommends a low-performance (KF80) mask.

A low-performance mask has ultra-fine dust blocking performance, but in theory, it means that it can inhale about 20% of fine dust, so it is a high-performance, ultra-fine system that has good breathing and can easily inhale pure air in pollution situations. It is necessary to develop a dust-blocking mask.

An object of the present invention is to manufacture a detachable mask that can be used for a long time at various ages and can breathe pure air in an extremely polluted state while utilizing an existing health mask with excellent performance.

The first and fourth layer non-woven fabrics used as support layers use PET material made of SB and control the weight to a level that can maintain the shape of the mask. In particular, the fourth layer non-woven fabric is directly attached to the face during breathing. It is composed of a weight that does not cause discomfort.

50 ?? in the case of the first layer (shell) 11a The 60gsm, 4th layer (face-adhesive skin) 11d nonwoven fabric uses a weight of about 25-35gsm, but in the present invention, the shape stability of the AT nonwoven fabric is ensured, so even if the weight is lowered by 10gsm, the mask shape stability is is secured

The MB nonwoven fabric, which is the second layer (first endothelium) 11b, contains a low-viscosity PP polymer of MI 900-1800 level, UV stabilizer, antioxidant, and additives such as whitening agent (Tio2). An electrostatic nonwoven fabric having a blocking effect is used.

In order to achieve the above object, it is composed of four nonwoven layers according to the present invention. As a core layer, the MB nonwoven fabric of the second layer and the MB nonwoven fabric of the third layer obtain the ultrafine dust blocking effect and the respiration improvement effect.

The first and fourth layer nonwoven fabrics used as support layers use PET material made of SB, and the weight is adjusted to a level that can maintain the shape of the mask, and the fourth layer nonwoven fabric is inconvenient due to direct attachment to the face during breathing It is composed of a weight that does not give

In addition, silicone resin processing is applied to the facial boundary to enhance facial adhesion, thereby reducing adhesiveness and leakage rate.

In general, in the case of the first floor, 50 ?? 60gsm, the fourth layer nonwoven fabric uses a weight of about 25-35gsm, but in the present invention, the shape stability of the AT nonwoven fabric is secured to a certain extent, so that the mask shape stability is secured even with a weight reduction of about 10gsm, respectively.

The second layer, MB nonwoven fabric, which is the core material, is spun in a general single spinning form by mixing additives that increase the spinning stability and dielectric properties of the PP polymer, and electrostatically treated nonwoven fabric is used for ultrafine dust adsorption.

Electrostatic treatment of nonwoven fibers is a hydro charging method to obtain electrostatic properties by spraying fine moisture, and before being wound on the winder 140, the surface of the web is charged with an electric charge through the electrostatic treatment machine 170, so that various types of air in which the filter is used are charged. It functions to absorb fine dust and improves efficiency.

The manufactured MB non-woven fabric is 15-25 gsm according to the required performance, which is 10-20 gm compared to the general mask, and the performance is about 5-10% lower than the filtration efficiency, but because the fiber density of the non-woven fabric is lowered, the breathability (differential pressure or pressure loss) will be improved

The lowered filtration efficiency has better performance and respiration than the filtration efficiency of the existing mask through additional effects such as adsorption and collection in the third layer (second endothelium) 11c, MB nonwoven fabric, which is the constituent nonwoven fabric of the present invention.

The third layer, MB non-woven fabric, is manufactured using a general single-spun PP material, and the weight is 40-80 gsm, and in order to increase bulkiness, the distance between the spinneret and the belt is increased in the facility to expand the fiber diameter and structure. do.

When spinning long fibers, Si and F-based additives with excellent dielectric properties are mixed and spun, and synergistic effects are obtained with the dielectric properties of PP material, so it absorbs not only a small amount of ultrafine dust passing through the electrostatic MB non-woven fabric but also heavy metals. The capture performance is enhanced.

In particular, since the product structure according to the present invention uses 100% PP material, it is possible to obtain the effect of easy recycling after future use.

In addition, according to the present invention, it is possible to manufacture an ultra-fine dust-response mask with less deformation of the mask shape and excellent respiration properties when the first socket part 11a1, which is a detachable valve, is fixed due to the bulky structure and superior shape stability than the conventional mask.

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

[4 layers stacked structure design]

The present invention is composed of four nonwoven layers, and the first layer 11a uses a SB nonwoven fabric for maintaining the shape of the mask.

Although there is no effect of removing fine dust, a non-woven fabric with a rather hard texture is used to easily maintain adhesion to the face when the mask is attached and detached, and a non-woven fabric having a lower weight than the existing one but good bonding characteristics with the second layer 11b is used. .

The second layer (11b) MB nonwoven fabric is an electrostatic nonwoven fabric with the main characteristics of blocking ultrafine dust. Various additives such as UV stabilizer and antioxidant are mixed and electrostatic treatment for the light change of fiber and dielectric effect to improve electrostatic properties. It uses a nonwoven fabric of 15-25gsm, which is lower than the general weight, and the filtration efficiency is at least 85% blocking effect based on 0.25um ultra-fine dust.

Since the effect of collecting and adsorbing ultrafine dust passing through the third layer 11c, which is the main constituent layer of the present invention, is large, a final filtration effect of 95% or more can be obtained.

The third layer (11c) non-woven fabric is MB non-woven fabric, and unlike the second-layer MB non-woven fabric, it is high in weight and has excellent bulkiness. Structurally, through the curing effect, it is formed into a structure including random-type micropores that can adsorb ultra-fine dust, and uses an additive with high dielectric properties in the PP polymer to adsorb and collect dust passing through the second layer. This is possible.

The fourth layer (11d) is a non-woven fabric that is in direct contact with the face and should have a soft texture, but it may be difficult to breathe because it is in close contact with the breathing apparatus during inhalation. Select and use a nonwoven fabric that can obtain

In addition, in order to increase the adhesion to the face, the effect of increasing the adhesion and improving the leakage rate is obtained by processing the silicone resin on the face adhesion part of the fourth layer nonwoven fabric.

In the 4 layer structure constructed in the present invention, unlike the general ultrafine prevention mask, ultrafine dust is sequentially controlled through each structural layer, and the ultrafine dust passed in the middle stage during inhalation is not only absorbed but also collected at the previous stage of the breathing apparatus. It is possible to obtain a durability effect as well as breathability by increasing the

[Structural design effect by mask stacking]

The present invention, as described above, the first layer ?? Each of the fourth layers has a structure that can secure breathability and durability through the role of nonwoven fabric.

The SB non-woven fabric of the outer skin has a shape stabilization effect and an effect of supplying fresh air in a dangerous environment through a detachable valve, and the second-layer MB non-woven fabric can obtain more than 85% of ultra-fine dust blocking effect through its microstructure and electrostatic effect. , the ultrafine dust that has passed through the breathing apparatus absorbs and collects the ultrafine dust in a random form through the curing structure of the 3rd layer MB nonwoven fabric before inhaling the breathing apparatus, thereby blocking most of the ultrafine dust and improving durability. have.

In addition, the fourth layer nonwoven fabric has the effect of facilitating respiration through an appropriate adhesion effect with not only the face but also the breathing apparatus, and the silicone resin portion of the face adhesion part has the effect of increasing adhesion with the face.

This structure does not increase the weight compared to the existing mask, but it is possible to manufacture a mask having a structure that increases respiration and durability even at the same weight.

[Shape of main structural layer nonwoven fabric]

The nonwoven fabric used for the first layer 11a not only has the effect of maintaining the shape stability of the mask, but also fixes the first socket part 11a1, which is a detachable valve, to minimize its shaking and facilitates breathing without oxygen leakage through the oxygen cylinder 20. The second-layer electrostatic MB nonwoven fabric is spun through the spinning nozzle 113 in a random form and is structurally formed into a network structure. The thickness of the fibers is 2-5um, and the pores in the network structure are ultra-fine with more than 10um. Although it cannot physically block dust, it can electrically adsorb and block ultrafine dust due to the electrostatic effect on the fiber surface.

However, since some ultrafine dust passes through and reaches the respiratory tract, if the pore size of the network structure is small to prevent this, the passed ultrafine dust can be reduced, but it is difficult to breathe.

Therefore, in the present invention, in order to reduce the porosity of the second layer 11b, increase the weight or finer the fiber thickness to produce a nonwoven fabric. In order to obtain the effect of increasing the absorption rate and collection rate of the ultrafine dust passed through, the third layer (11c) also has a synergistic effect by applying MB nonwoven fabric, and the structure also has a random network structure, but unlike the MB nonwoven fabric of the second layer (11b), it has a large pore size and a bulky structure to improve respiration. It is possible to obtain not only the absorption effect of ultrafine dust, but also the strengthening effect of collecting power and excellent durability.

Looking at the following examples are as follows.

[Example 1]

According to the flow chart, it is designed in a SB/MB/MB/SB 4 layer structure, the second and third layers have dielectric properties, and the second layer MB non-woven fabric uses an electrostatic non-woven fabric, but unlike the conventional one, it is a lightweight non-woven fabric of 20 gsm. was used, and for the third layer MB nonwoven fabric, a nonwoven fabric having a bulky structure of 600 gsm PP fibers in the form of long fibers was used.

SB nonwoven fabric was used for the first and fourth layers, and the weight was 40 g and 20 g, so that the overall weight was equal to or less than that of the existing mask.

In the first layer nonwoven fabric, a detachable valve was installed to enable oxygen supply, and the interface of the fourth layer was processed with silicone resin to increase adhesion to the face and prevent leakage.

For MB non-woven fabric, the core structural layer, a 35-holes/inch spinning nozzle was used, and polypropylene polymer (LG Chem.) of MI (Melt Index) 900 was used.

In order to prevent the deterioration of the polymer, stable spinning was induced by adding a certain amount of thermal stability additive and anti-oxidation additive. to get the thread.

The nonwoven fabric formed during spinning was subjected to water treatment to obtain electrostatic properties, and the moisture content of the nonwoven fabric was controlled by drying before winding.

Conditions such as radiation conditions and heat shrink treatment are as follows.

Radiation temperature 245℃,

Air pressure 5.3 psi,

DCD 15cm,

Cooling airflow temperature 10℃,

Thermal drying temperature: 120℃, 15m/m

Electrostatic treatment: water treatment method

[Example 2]

In the structure of Example 1, the third layer was a general mask structure to which a thermal bond nonwoven fabric was applied, and the manufacturing conditions of the MB nonwoven fabric were the same, but the valve was not worn and the silicone coating was not applied to the face adhesion part of the fourth layer.

[Example 3]

Although the valve was attached in the structure of Example 1, it was manufactured in a form in which no silicone coating was applied to the face adhesion part of the fourth layer.

Example differential pressure efficiency Leakage rate (%) Continuity of use One 12.0 95.4 5 o 2 14.3 96.6 11 x 3 17.5 97.4 13.5 x

Leakage rate: The rate at which outside air enters when wearing a mask

Continuity of use: level of continuous use of the mask when exposed to external contamination

Differential pressure and efficiency above are ASTM D-2986 and MIL. According to each standard of STD-282, a dioctyl phthalate (DOP, Dioctyl phthalate) solution was vaporized with a device called TSI-8130 to obtain very fine particles of 0.12 microns, and the concentration of particles at the inlet and outlet of the filter was compared and measured. ( Measuring area is 100cm2)

The dust collection rate (efficiency) was calculated by the following formula.

100*(upstream side light scattering amount (Q1) - downstream side light scattering amount (Q2)) / upstream side light scattering amount (Q1)

The leak rate (%) analyzed the degree of leakage of the inhaled air through an intake resistance analyzer.

Continuity of use was evaluated when there is no effect of blocking fine dust in a microenvironment continuation environment.

As described above, in the air mask set according to an embodiment of the present invention, and the mask non-woven fabric manufacturing apparatus and method thereof, the mask produced with a detachable valve and face coating treatment, unlike the conventionally manufactured mask, has the effect of counteracting fine dust of the existing mask. Not only is it large, but it has excellent respiration, low leakage rate, and when there is no further fine dust blocking effect in a continuous fine dust environment, it can be used continuously through a device that can introduce fresh air into the human body, and it can be used continuously even when exposed to hazardous environments. By giving an escape time, it is possible to apply the role of a general health mask in normal times and to minimize exposure to dangerous situations of the human body in special environments, so it is easy to apply and responds to fine dust unlike the existing expensive and clunky oxygen container connection type mask. become excellent

In addition, it can be easily replaced at a low price and has excellent competitiveness in commercialization by enabling repeated oxygen supply through attachment and detachment.

In addition, it is possible to improve recyclability by using 100% PP material with a material composition differentiated from existing nonwoven materials after use.

In addition, since it can be applied not only to general households but also to existing industrial fields, it can be used in various industries and uses such as environment, architecture, civil engineering, and building.

As described above, one embodiment of the present invention has been described, but based on this, those of ordinary skill in the art can add, change, or change components within the scope that does not depart from the spirit of the present invention described in the claims. The present invention may be variously modified and changed by deletion or addition, and this will also be included within the scope of the present invention.

10: mask 11: mask body
11a: outer shell (first layer) 11a1: first socket part
11b: first endothelium (second layer) 11c: second endothelium (third layer)
11d: face adhesion skin (4th layer) 12: earring strap
20: oxygen cylinder 21: second socket part
22: barrel body 22a: oxygen opening
23: valve housing 23a: opening and closing port
23b: outlet 24: on/off valve
25: pressure pin 26: valve spring
30: sending hose 31: first socket nut
32: second socket nut 110: radiating part
111: first component polymer 112: second component polymer
113: spinning nozzle 114: extruder
115: distribution plate 120: collector
130: conveyor belt 140: winder
150: cooler

Claims (5)

A plurality of mask non-woven fabrics including a skin facing the outside of the wearer and having a first socket part on one side, and a face-adhesive skin in close contact with the wearer's face are provided, and the outer skin and the face-adhesive skin are superimposed on each other at a micro-interval and a mask including a mask body having each other's edges sealed;
an oxygen cylinder having a second socket part on one side and having oxygen built therein to supply oxygen to the mask;
A first socket nut connected to the first socket part of the mask is provided at one end, and a second socket nut connected to the second socket part of the oxygen cylinder is provided at the other end to deliver oxygen from the oxygen cylinder to the mask. s;
Including,
The first and second endothelium are disposed between the integument and the face adhesion skin,
In the mask, a predetermined buffer space is formed by the oxygen supplied between the first and second endothelium and the face-adhesive skin close to the first and second endothelium in three layers with the outer skin, which is a single layer of the mask body, while oxygen spreading in the direction of the outer skin is external. It blocks fine dust from entering and oxygen that spreads in the direction of the face adhesion skin can be supplied to the user,
The oxygen tank,
a body having an internal space in which the oxygen is stored and having an oxygen opening on one side;
a valve housing which shields the oxygen opening and has an opening through which the oxygen is ejected and a discharge port communicating with an adjacent portion of the opening and closing opening to discharge the oxygen to the air supply hose through the second socket;
the second socket portion provided at the distal end of the discharge port;
an on-off valve for opening and closing the opening and closing port;
In a state in which one side is connected to the on-off valve and the other side protrudes to the outside of the valve housing, the on-off valve flows in and out along the axial direction of the oxygen cylinder to open and close the opening and closing port, so that the user wears the mask. a pressure pin for receiving oxygen by pressurizing as much as necessary; and
a valve spring elastically supporting the bottom surface of the opening/closing valve;
A gas mask set comprising a. Melt-blown composite spinning to produce the mask nonwoven fabric for manufacturing the outer skin, face-adhesive skin, first endothelium, and second endothelium of the mask body used in the air mask set of claim 1 by using the same or heterogeneous two-component polymer a spinning unit having a spinning nozzle for spinning fibers;
a collector for collecting the composite spun fibers spun from the spinning nozzle;
a conveyor belt disposed on the collector to transport the composite spun fibers collected and stacked on the collector to a predetermined place;
a winder for winding the composite spun fiber transferred through the conveyor belt;
A mask non-woven fabric manufacturing apparatus of a mask set comprising a. The method of claim 2,
The radiation unit,
Before spinning the composite spun fiber through the spinning nozzle, two different polymers can be used so that the molten polymer obtained by melt-compressing the two-component polymer is discharged from the spinning nozzle, and the molten polymer is drawn with high-temperature and high-pressure air; A mask nonwoven fabric manufacturing apparatus of a gas mask set, characterized in that two extruders are further provided for miniaturization. The method of claim 3,
Between the spinning unit and the collector, a cooler for cooling the molten polymer stretched and ultrafine through the spinning nozzle is further provided. Melt-blown using a two-component polymer into a composite spun fiber through a spinning nozzle;
Cooling and curing the melt-blown composite spun fiber with a cooler to produce the mask nonwoven fabric for manufacturing the outer skin, the face-adhesive skin, the first endothelium and the second endothelium of the mask body used in the air sending mask set of claim 1;
collecting the cooling-hardened composite spun fibers in a collector to evolve them into a fibrous web;
A method of manufacturing a non-woven mask of a gas mask set comprising a.

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