KR20230018865A - Double filter mask with cotton filter and method for manufacturing the same - Google Patents

Abstract

The present invention provides a mask which comprises: an inner layer (12) disposed on a side facing the user's face; an outer layer (11) disposed on a side facing the inner layer; an intermediate filter layer (13) located between the inner layer (12) and the outer layer (11); and a cotton filter layer (20). In addition, the cotton filter layer (20) is combined with a structure to be located between the inner layer (12) and the outer layer (11) or extend in one direction from at least a portion of the structure in which the inner layer (12) and the outer layer (11) are combined. Accordingly, moisture inside a mask is removed, and a function of the intermediate filter layer can be protected through moisture removal.

Description

Double filter mask with cotton filter and method for manufacturing the same}

The present invention relates to a double filter mask including a cotton filter and a method for manufacturing the same.

In general, a mask covers the nose and mouth, prevents dust or dust floating in the air from being inhaled, prevents inhalation or scattering of germs or viruses, and prevents inhalation of harmful substances into the human body through the respiratory system, thereby preventing colds and the like. It is widely used for health hygiene, cold protection around the nose and mouth in cold weather, and cold protection to protect the face from the cold in winter, which damages the skin due to cold air.

However, the mask used for the above purpose serves to partially block external particles floating in the air, such as dust, pathogenic viruses, and toxic gases, but the effect is insignificant.

In order to solve this problem, a mask with a complex structure in which a charcoal filter, an activated carbon filter, or an antibacterial filter is attached to a conventional mask has been developed.

However, in the case of a mask including a filter, in addition to the disadvantages of a complicated structure and high manufacturing cost, the amount of air entering the respiratory system is greatly reduced, causing discomfort in the breathing of the mask wearer, as well as coughing and exhalation. Water vapor contained in the mask or filter is deposited and bacterial growth occurs, resulting in odor.

In addition, the mask manufactured in this way is very likely to cause trouble to the respiratory mucous membrane or penetrate into the human body by the additives forming the filter through the human respiratory tract. From this point of view, there is a problem that the mask containing the filter composition is not beneficial to health, but rather can harm health.

However, these masks tend to be developed in the direction of filtering yellow dust and fine dust, which are becoming increasingly serious, but his research is insignificant in the direction of developing filters that do not harm health.

In the case of a mask equipped with a filter, it is possible to obtain a fine dust blocking effect, but the filter itself is attached to the mask, which makes breathing uncomfortable during outdoor activities, and in the case of a replaceable type, it is cumbersome to replace and use every time.

Nevertheless, a functional mask that satisfies the needs of respiratory patients or users who want to improve the benefits to the human body while breathing more smoothly during outdoor activities has not been disclosed.

Bad breath or odor is pointed out as the biggest problem with functional masks. Despite wearing a mask, if you pass through a space with a bad smell, the bad smell remains trapped in the mask, so you have to feel the bad smell for a longer time than a person who does not wear a mask.

A more serious problem than this is that moisture inevitably exists inside the mask due to the user's breath and droplets discharged from the user, and the mask is wet by this moisture, resulting in odor. In addition, moisture inside the mask causes a serious problem in that the electrostatic filter function of the filters included in the mask is significantly deteriorated.

As a prior art, Korean Patent Registration No. 10-2267245 'mask' is disclosed. The prior art relates to a mask that is easy to breathe and prevents fogging while blocking harmful substances, and the second cover unit when the air discharged according to exhalation is discharged to the space between the outer skin and the inner skin and then moves to the upper part of the mask. As the flow is blocked by and guided downward again, the air discharged to the upper part of the mask is minimized to prevent fogging of the wearing glasses.

However, the prior art only discloses the contents of suppressing fogging by guiding air discharge from the mask, but does not disclose the contents of removing or absorbing moisture inside the mask. Recently, a technology for removing moisture inside the mask is disclosed. There is an urgent need for it.

(Patent Document 1) Korean Patent Registration No. 10-2267245

The present invention is a technology devised to solve the problems of the prior art, and has a mask structure that removes or absorbs moisture inside the mask, thereby preventing the degradation of the electrostatic filter function and reducing the occurrence of bad breath inside the mask. would like to propose

One embodiment of the present invention for solving the above problems, the inner layer 12 disposed on the side facing the user's face; an outer layer (11) disposed on a side opposite to the inner layer; an intermediate filter layer (13) positioned between the inner layer (12) and the outer layer (11); and a cotton filter layer (20); The cotton filter layer 20 is located between the inner layer 12 and the outer layer 11 or at least part of a structure in which the inner layer 12 and the outer layer 11 are combined. It provides a mask coupled to the structure so as to extend in one direction from.

In addition, the intermediate filter layer 13 may be formed of at least one of a filter group including a membrane filter, or a combination of two or more.

In addition, at least a portion of the cotton filter layer 20 may be combined while being inserted into a structure in which the inner layer 12, the middle filter layer 13, and the outer layer 11 are combined.

In addition, the cotton filter layer 20 may be composed of a cotton filter that is compressed to absorb droplets.

In addition, the cotton filter layer 20 may further include synthetic resin at a preset ratio.

In addition, the synthetic resin may be polyethylene (PE).

In addition, the polyethylene ratio of the synthetic resin may be 0 to 50 weight percent.

In addition, the cotton filter layer 20 may be positioned between the middle filter layer 13 and the outer layer 11.

On the other hand, the present invention is a method of manufacturing the above-described mask, (a) stacking the cotton filter layer 20 and the intermediate filter layer 13 (S10); (b) thermally compressing the cotton filter layer 20 and the intermediate filter layer 13 in a laminated state (S20); and (c) bonding the outer layer 11 and the inner layer 12 to both sides of the combination body of the cotton filter layer 20 and the middle filter layer 13 (S30); Provides a method including.

By including the cotton filter layer, the mask according to the present invention not only removes moisture inside the mask, but also protects the function of the intermediate filter layer through moisture removal. In particular, it exerts an effect of preventing performance deterioration (electrostatic filter function) of a membrane filter due to moisture.

1 is a plan view of a mask (KF mask type) according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, schematically showing three stacked forms.
3 is a plan view of a mask according to another embodiment of the present invention.
4 is a plan view according to a modified example of FIG. 3 .
5 is a use state diagram showing a state in which a user wears a mask (dental mask type) according to an embodiment of the present invention.
FIG. 6 is a schematic overall perspective view of the mask of FIG. 5 .
7 is a plan view of the mask shown in FIG. 5;
Figure 8 shows a schematic diagram and a partially enlarged view schematically showing that air is discharged in a state in which a user wears a mask according to another embodiment of the present invention.
9 is a cross-sectional view showing the partially enlarged view of FIG. 8 in more detail.
10 is a graph comparing the degree of bad breath between a mask equipped with a cotton filter according to the present invention and a mask without a cotton filter, through a device for measuring bad breath.

Hereinafter, the present invention will be described in detail through the accompanying drawings and examples. A detailed description thereof has been omitted.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, the definition should be made based on the contents throughout this specification.

Referring to Figures 1 to 4, a mask according to an embodiment of the present invention will be described. In Figures 1 to 4, the mask according to the present invention is described based on the case of the KF mask shape, but the mask according to the present invention is not limited thereto, and not only masks such as a bird's beak shape and a dental mask shape (see Figs. 5 to 7) Rather, it is specified in advance that it can be applied to both an emergency mask used in a disaster situation and a hood-type mask (eg, a mask used for medical purposes) integrally formed with a viewing window.

The cotton filter as defined herein may mean that it is manufactured by sheeting a cotton fiber mixture prepared including cotton fibers.

Specifically, the cotton filter prepares cotton, removes foreign substances such as seeds, etc. to prepare cotton fiber, and dries the cotton fiber for 40 to 60 hours in a dryer maintained at a temperature of 18 to 22 ° C and a humidity of 50 to 60%. By doing so, it is possible to stabilize physical properties by removing moisture remaining inside.

Thereafter, a cotton filter having good hygroscopicity and moisture repellency can be manufactured by compressing the cotton-shaped cotton fiber at a predetermined pressure to form a filter molded to have a predetermined transmittance.

The mask 100 according to an embodiment of the present invention is divided into a mask body 110 and earrings 140, and the mask body 110 includes a cotton filter layer 234 as a whole. In the mask body 110, an upper cover covering the user's nose side and a lower cover covering the user's chin side are coupled by bonding portions 122, respectively. An edge joint 121 is formed at the edge of the mask body 110 for finishing.

FIG. 2 shows three examples of the stacked form of the mask body 110 . 2(a) shows a structure in which the inner layer 112-middle filter layer 113-cotton filter layer 120-outer layer 111 are stacked in the order, and the user's droplets are filtered through cotton wool. By absorbing it, it is possible to effectively prevent damage to the intermediate filter layer 113 caused by droplets.

(b) of FIG. 2 shows a state in which the order of the intermediate filter layer 113 and the cotton filter layer 120 is reversed in (a) above. In normal cases, the humidity inside the mask may be high, but in preparation for special situations, such as when the humidity outside the mask is higher, it may be configured in a laminated form as shown in (b).

2(c) shows a structure in which the inner layer 112-middle filter layer 113-cotton filter layer 120-middle filter layer 113-outer layer 111 are stacked in the order. In order to further strengthen the filtering function of external substances in a situation where the outdoor air is heavily polluted, a cotton filter layer 120 is placed in the middle and a pair of intermediate filter layers 113 are disposed on both sides. In this case, although breathing resistance may be increased, the user may be more safely protected from external contaminants.

By thermally compressing the cotton filter layer 120 itself, fluff generated from the cotton filter may be prevented. If the cotton filter layer 120 does not contain a synthetic resin, for example, polyethylene, fluff may be generated. In this case, the generation of fluff may be minimized by thermal compression treatment.

In addition, the cotton filter layer 20 and the intermediate filter layer 13 may be bonded by thermal compression in a stacked state. Accordingly, manufacturability can be improved by omitting the process of individually bonding each.

Specifically, the above method includes steps S10 to S30.

Step S10 is a step of stacking the cotton filter layer 20 and the intermediate filter layer 13. It refers to the process of cutting into mutually corresponding shapes and then arranging them in an overlapping state.

Step S20 is a step of thermally compressing the cotton filter layer 20 and the intermediate filter layer 13 in a laminated state. Through this, the cotton filter layer 20 and the intermediate filter layer 13 can be integrated. At this time, the cotton filter layer 20 and the intermediate filter layer 13 can be applied not only to thermal compression, but also to all bonding methods such as simple compression, ultrasonic fusion, and bonding by adhesive.

Step S30 is a step of bonding the outer layer 11 and the inner layer 12 to both sides of the combination body of the cotton filter layer 20 and the intermediate filter layer 13, respectively. That is, after cutting the outer layer 11 and the inner layer 12 into a shape corresponding to the combination body, they are bonded together. Here, all known bonding methods may be applied to the bonding.

The embodiments of FIGS. 3 and 4 are different from the above-described embodiments in that cotton filter layers 234a, 234b, and 334 are provided in specific local areas of the mask bodies 210 and 310.

First, referring to the embodiment shown in FIG. 3, the cotton filter layers 234a and 234b refer to structures formed only on portions directly facing the user's respiratory system. That is, a portion 234a adjacent to the user's nose and a portion 234b adjacent to the user's mouth. The inside of the mask 200 may have different degrees of contact with moisture at a distance from the respirator. A part relatively distant from the nose or mouth will have a low degree of contact with moisture, but a part directly facing the nose or mouth will have a relatively high degree of contact with moisture. Therefore, by providing the cotton filter layers 234a and 234b only in areas adjacent to the nose and mouth, which are vulnerable to moisture, it is possible to remove moisture inside the mask 200, thereby reducing the performance of the intermediate filter layer. can prevent

The embodiment shown in FIG. 4 is a modification of the above-described embodiment (FIG. 3). It is a structure provided with a cotton filter layer 334 in the third area (meaning an arbitrary area) other than the nose and mouth. The cotton filter layer 334 is coupled to the mask body 310 by a bonding portion 331 . Here, the cotton filter layer 334 may be configured to be replaceable. When the life of the cotton filter layer 334 is exhausted or the moisture removal performance is deteriorated, only the cotton filter layer 334 is replaced. can be used Although FIG. 4 shows that the cotton filter layer 334 has a circular shape, the shape and location of the cotton filter layer 334 may be appropriately formed according to the designer's choice.

5 to 8 will be described based on a mask (dental mask type) according to another embodiment of the present invention.

Referring to FIGS. 5 to 7 , the overall configuration of a mask according to an embodiment of the present invention will be described. The mask according to the present invention includes an upper cover part 10, a cotton filter layer 20 and a lower cover part 30 in consideration of position and function.

Here, the upper cover portion 10 is configured to cover a portion adjacent to the user's nose. A nose bridge fixing part 50 may be inserted into the upper side of the upper cover part 10 . It is preferable that the nose bridge fixing part 50 is made of a flexible material (for example, a flexible metal material) so that the user can freely change its shape. Accordingly, the user can properly deform the shape of the bridge of the user's nose and bring the upper cover 10 into close contact with the bridge of the user's nose. It is very important to properly attach the upper cover 10 to the user's nose. If the upper cover part 10 and the user's nose do not adhere at all, the user's breath may be discharged through the gap between the upper cover part 10 and the user's nose, and if the user wears glasses, fogging Because problems can arise.

A cotton filter layer 20 is positioned between the upper cover part 10 and the lower cover part 30 . The cotton filter layer 20 is a part that covers the user's mouth, and can be configured in a three-stage pleated shape so that all users can use it regardless of the size of the face.

The lower cover part 30 is configured to cover a portion adjacent to the user's chin. The lower cover part 30 is formed to a predetermined length to cover all curves of the user's chin. That is, the lower cover part 30 may have the pleat shape of the cotton filter layer 20 described above in order to cover all of the rounded portion of the user's chin, and the number of pleats may be set to an optimal value by the designer. can be chosen

The mask according to the present invention may be composed of a combination of layers formed of different materials, and a bonding portion 60 may be formed at a combined portion. The bonding portion 60 may be formed by various methods such as thermal fusion, ultrasonic fusion, and bonding using an adhesive. Dotted and dotted lines in FIGS. 5 and 7 indicate such junctions.

The mask according to the present invention can be fixed by wearing an ear ring 40 on the user's ear. The earring 40 is preferably made of an elastic material, and both ends of the earring 40 may be bonded to the upper cover part 10 and the lower cover part 30, respectively.

Referring to Figures 8 and 9, the cross-sectional shape of the mask according to the present invention will be described. The upper cover part 10 may be formed in a laminated form of an inner layer 12 and an outer layer 11 . Here, the inner layer 12 and the outer layer 11 may be formed of a general non-woven fabric or cotton material. When formed of a general nonwoven fabric, each of the inner layer 12 and the outer layer 11 may be formed of a nonwoven fabric filter having a weight of 20 to 60 GSM (Gram per Square Meter). When the weight of the nonwoven fabric is less than 20 GSM, there is a problem of droplet absorption and fine dust filtration efficiency, and when the weight of the nonwoven fabric exceeds 60 GSM, there is a problem of increased respiratory resistance. For reference, the term 'non-woven fabric' used herein may refer to any cloth made by mechanically processing fibers so that they are entangled with each other using heat and/or resin, and may include spanlace-type non-woven fabrics. .

Referring to FIG. 8 , the top of the cotton filter layer 20 can be stably fixed by being laminated together with the inner layer 12 and the outer layer 11 . At this time, the cotton filter layer 20 has lower air permeability than other parts, but higher moisture absorption performance than other parts, so the user's breathing is smooth through the upper cover part 10 or the lower cover part 30. can be ejected. On the other hand, the cotton filter may include natural cotton fiber and synthetic resin at a weight ratio of 10:0.5-2. Here, the synthetic resin is preferably polyethylene (PE), and in particular, the polyethylene ratio of the synthetic resin may be formed at 0 to 50 weight percent.

The cotton filter preferably contains natural cotton fiber and synthetic resin in a weight ratio of 10:0.5-2. When the cotton filter contains natural cotton fiber and polyethylene fiber at a weight ratio of 10:0.5-2, the polyethylene fiber melts and binds between the cotton fibers during the thermal compression process to minimize the thickness of the cotton filter, This is because it has the advantage of significantly improving the filtration efficiency and minimizing microorganisms propagating inside the filter. On the other hand, if the polyethylene fiber is included in a weight ratio of less than 10:0.5, there is a problem that the filter thickness may be thick, and if the polyethylene fiber is included in a weight ratio of more than 10:2, breathing resistance may increase. exists.

9 is a cross-sectional view showing the partially enlarged view of FIG. 8 in more detail. Referring to FIG. 9 , the upper cover part 10 further includes an intermediate filter layer 13 between the inner layer 12 and the outer layer 11 . Here, the intermediate filter layer 13 may be used by compressing not only a membrane filter but also widely used general filters. As shown in FIG. 4, by further including the intermediate filter layer 13, the filtering performance of the mask can be further improved, and thus viruses propagating through the air can be more effectively blocked.

The upper end of the cotton filter layer 20 may be combined while being inserted into a structure in which the inner layer 12, the middle filter layer 13, and the outer layer 11 are combined. Specifically, the inner layer 12 and the outer layer 11 are formed longer than the middle filter layer 13, thereby providing a space margin capable of accommodating the upper side of the cotton filter layer 20 . The upper end of the cotton filter layer 20 may be configured to come into contact with the lower end of the middle filter layer 13, and is laminated while in contact with the inner layer 12, the middle filter layer 13, the outer layer 11 and The upper end of the cotton filter layer 20 may be integrally fixed.

Here, the cotton filter layer 20 is composed of a cotton filter that is thermally compressed to absorb droplets, and an outer skin layer 22 surrounding the cotton filter 21 is formed. In addition, for more stable structural support, a support layer 23 may be further provided.

By including the cotton filter layer 20, the mask according to the present invention not only removes moisture inside the mask, but also protects the function of the intermediate filter layer 13 through moisture removal. In particular, it is possible to prevent performance deterioration (electrostatic filter function) of a membrane filter due to moisture, so that the filtering performance of the intermediate filter layer 13 can be maintained for a long time.

Meanwhile, the middle filter layer 13 and the cotton filter layer 20 of the mask according to the present invention may be treated with an antibacterial agent and/or a cooling agent. When the cooling agent treatment is performed on the middle filter layer 13 and the cotton filter layer 20 of the mask, the stuffiness that the user may feel when wearing the face is reduced, and body heat is easily released. When antibacterial treatment is performed on the middle filter layer 13 and the cotton filter layer 20, it is possible to block all or some of the bacteria or viruses contained in the inhaled air, and even when the mask is used for a long time, the middle filter layer (13) and the cotton wool filter layer (20) can significantly prevent bacteria or mold from growing. The mask according to the present invention is described as treating the intermediate filter layer 13 and the cotton filter layer 20 with an antibacterial agent and/or a cooling agent, respectively, but depending on the designer's choice, the intermediate filter layer 13 and the cotton wool It is also possible to treat at least one of the filter layers 20 with an antibacterial agent and/or a cooling agent.

As the antibacterial agent and cooling agent applied to the intermediate filter layer 13 and the cotton filter layer 20, various types of antibacterial agents and cooling agents for fibers used in the art may be used. A cooling agent and an antibacterial agent may be applied to the intermediate filter layer 13 and the cotton filter layer 20 using various types of pretreatment methods used in the art.

As used herein, the term 'antibacterial composition' may refer to any composition that inhibits the growth of microorganisms growing on a specific object compared to the case where the treatment is not performed on a specific object. It is very important to treat the antibacterial composition on the middle filter layer 13 and the cotton filter layer 20 of the mask according to the present invention.

This is because when the antibacterial composition is applied to the intermediate filter layer 13 and the cotton filter layer 20, bacteria or viruses contained in droplets pass through the intermediate filter layer 13 and the cotton filter layer 20. This is because all or part of bacteria or viruses can be killed, and most of the bacteria or viruses included in droplets can be absorbed into the cotton filter layer 20 in a state where most of them are killed.

Here, the antibacterial composition may preferably be a natural antibacterial composition, more preferably chitosan, hinokitiol, chitin hydrochloride, aminoglucoside, silver, and may be selected from the group containing mixtures thereof, most preferably may be chitosan or silver. At this time, the intermediate filter layer 13 and the cotton filter layer 20 may preferably be immersed in an aqueous solution of the antimicrobial composition and the binder to impart antibacterial properties to the filter material, and the antimicrobial composition has an antibacterial effect. It can be provided by encapsulating a substance with a microcapsule.

On the other hand, since the cotton filter layer 20 removes moisture, it is possible to significantly reduce bad breath due to wetness of the mask. Referring to FIG. 10 , it can be seen that the effect of the cotton filter layer 20 to reduce bad breath. As a result of measurement using the halitosis measuring device, the higher the value, the higher the degree of bad breath. Since the mask is constantly exposed to moisture by the user's breathing, the structure that does not contain the cotton filter eventually becomes wet, resulting in increased breathing resistance, as well as bad breath inside the mask. .

The measurement value (or measurement unit) was measured while the concentration of the volatile sulfur compound was measured, while artificially injecting air using a blowing device. In addition to the above methods, it is possible to compare the degree of bad breath according to the presence or absence of the cotton filter layer 20 in various ways.

The above embodiment in the present invention is an example, and the present invention is not limited thereto. Anything that has substantially the same configuration as the technical concept described in the claims of the present invention and achieves the same effect is included in the technical scope of the present invention.

10: upper cover
11, 111: outer layer
12, 112: inner layer
13, 113: intermediate filter layer
20, 120, 234a, 234b, 334: cotton filter layer
21: cotton wool filter
30: lower cover
40, 140, 240, 340: earrings
50: nose bridge
60: joint
110, 210, 310: mask body

Claims (10)

an inner layer 12 disposed on a side facing the user's face;
an outer layer (11) disposed on a side opposite to the inner layer;
an intermediate filter layer (13) positioned between the inner layer (12) and the outer layer (11); and
Cotton wool filter layer (20); Including,
The cotton filter layer 20,
Located between the inner layer 12 and the outer layer 11 or coupled to the structure such that the inner layer 12 and the outer layer 11 extend in one direction from at least a portion of the combined structure,
mask. The method of claim 1,
The intermediate filter layer 13,
At least one of a filter group including a membrane filter and a nano filter, or a combination of two or more,
mask. The method of claim 2,
At least some of the cotton filter layer 20,
The inner layer 12, the middle filter layer 13 and the outer layer 11 are combined in a state inserted into the combined structure,
mask. The method of claim 1,
The cotton filter layer 20,
Consisting of a cotton filter that has been compressed to absorb droplets,
mask. The method of claim 4,
The cotton filter layer 20,
Further comprising a synthetic resin of a preset ratio,
mask. The method of claim 5,
The synthetic resin,
Polyethylene (PE),
mask. The method of claim 6,
The polyethylene ratio of the synthetic resin is,
0 to 50 weight percent,
mask. The method of claim 2,
The cotton filter layer 20,
Located between the middle filter layer 13 and the outer layer 11,
mask. A method of manufacturing the mask according to claim 8,
(a) stacking the cotton filter layer 20 and the intermediate filter layer 13 (S10);
(b) thermally compressing the cotton filter layer 20 and the intermediate filter layer 13 in a laminated state (S20); and
(c) bonding the outer layer 11 and the inner layer 12 to both sides of the combination body of the cotton filter layer 20 and the middle filter layer 13 (S30); including,
Mask manufacturing method. The method of claim 2,
The cotton filter layer 20,
Located between the middle filter layer 13 and the inner layer 12,
mask.

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