KR102321414B1 - Partially Transparent Mask - Google Patents

Abstract

The present invention relates to a partially transparent mask, wherein as the partially transparent mask, the present invention can be used by a hearing impaired person or an instructor and the like who uses oralism due to a mouth part being transparent, has high transparency and allows the shape of the mouth to be showed more clearly by preventing moisture from forming inside, and enables, at the same time, the prevention of the spread of the corona and the like by having stable antibacterial properties. The partially transparent mask comprises: a mask main body; an ear loop string; and a transparent film.

Description

Partially Transparent Mask

The present invention is a partially transparent mask, which can be used by the hearing impaired or instructors using oral shoes because the mouth part is transparent. It relates to a partially transparent mask capable of preventing the spread of corona and the like by having stable antibacterial properties.

Recently, due to respiratory infections such as Corona, wearing a mask has become a necessity. Most people use a mask whose entire surface is made of filter material.

However, in the case of hearing impaired people who use oral communication, which is a method of communicating through mouth, there is a problem in that it is difficult to communicate through oral communication when using a general mask.

In addition, it is important to check the shape of the mouth for instructors at schools and academies, especially for instructors whose linguistic factors are important, but there is a problem that the shape of the mouth cannot be confirmed when using a general mask.

On the other hand, Korean Patent No. 10-1681100 (film-type transparent mask, Prior Patent 1) discloses a transparent mask using a non-woven fabric filter having air holes. However, the mask in Prior Patent 1 has a problem in that it is difficult to check the shape of the mouth and scratches occur on the surface of the product because moisture is generated inside the mask by breathing in a substantially sealed internal space. In addition, in such a structure, there is a problem in that it is difficult to prevent the penetration of viruses such as corona.

An object of the present invention is that the mouth part is transparent, so that hearing impaired or instructors using oral shoes can use it, and it has high transparency and prevents moisture from forming inside, so that it can show the shape of the mouth more clearly, and at the same time it has stable antibacterial properties. It is to provide a partially transparent mask that can prevent the spread of corona by having it.

In order to solve the above problems, an embodiment of the present invention provides a partially transparent mask, comprising: a mask body having a through hole formed therein; earring straps respectively attached to both ends of the mask body; and a transparent film disposed on the front or rear surface of the mask body and partially coupled to the mask body, wherein the transparent film has a thickness of 10 micrometers or less, and a coating solution comprising an antibacterial additive and a hard coating agent A first functional coating layer coated with; a base layer disposed under the first functional coating layer; Provided is a partially transparent mask having a thickness of 10 micrometers or less and comprising a second functional coating layer coated with a coating solution containing an antifogging agent.

In some embodiments of the present invention, the antimicrobial additive includes an organic solution, a dispersant, and a dispersion including zinc oxide powder, and the zinc oxide particles of the zinc oxide powder may have a diameter of 5 nm to 30 nm.

In some embodiments of the present invention, the first functional coating layer may include a layer coated with a coating solution including a polyurethane acrylate oligomer, an acrylic monomer, a photoinitiator, a slip additive, and an antibacterial additive.

In some embodiments of the present invention, the first functional coating layer comprises 50 to 70 parts by weight of a polyurethane acrylate oligomer, 30 to 50 parts by weight of an acrylic monomer, 1 to 5 parts by weight of a photoinitiator, 0.1 to 3 parts by weight of a slip additive, and 1 It may include a layer coated with a coating solution containing to 5 parts by weight of the antimicrobial additive.

In some embodiments of the present invention, the base layer may have a thickness of 150 to 500 micrometers and include polyethylene terephthalate.

In some embodiments of the present invention, the antimicrobial additive comprises a dispersion comprising 65 to 75 parts by weight of an organic solution, 15 to 25 parts by weight of a dispersant, and 15 to 25 parts by weight of zinc oxide powder, The zinc oxide particles may have a diameter of 5 nm to 30 nm.

In some embodiments of the present invention, the second functional coating layer may be coated with a coating solution including titanium dioxide powder, a dispersant and a photocatalyst solution, a binder, a leveling agent, and a photoinitiator.

In some embodiments of the present invention, the first functional coating layer may include zinc oxide having a particle diameter of 5 nm to 30 nm, and the second functional coating layer may include titanium dioxide having a particle diameter of 1 to 100 nm.

According to an embodiment of the present invention, since the mouth part is transparent, it can be used by a hearing impaired or an instructor using oral shoes, and it can show the shape of the mouth more clearly by preventing moisture from forming inside with high transparency, At the same time, it is possible to provide a partially transparent mask capable of preventing the spread of corona and the like by having stable antibacterial properties.

According to an embodiment of the present invention, it is possible to provide a partially transparent mask having a low haze while having an antibacterial function.

According to an embodiment of the present invention, it is possible to exhibit the effect of stably maintaining the antibacterial function for a long time.

According to an embodiment of the present invention, it is possible to suppress the occurrence of scratches to exhibit the effect of preventing a decrease in transparency due to use.

According to an embodiment of the present invention, since the coating layer performing the anti-fogging function is firmly bonded to the base layer, it is possible to exhibit the effect of minimizing the peeling of the coating layer having the anti-fogging function due to use.

According to one embodiment of the present invention, as the functional coating layer of the transparent film as a whole is firmly combined, it is possible to continuously maintain antibacterial and anti-fogging properties, and to exhibit the effect of being reusable.

According to an embodiment of the present invention, even if the product surface of the transparent film is wiped, scratches do not occur, and the effect of maintaining antibacterial and antifogging properties can be exhibited.

According to an embodiment of the present invention, it is possible to exhibit the effect of minimizing contamination of the transparent film.

1 schematically shows a front surface of a partially transparent mask according to an embodiment of the present invention.
2 schematically shows a rear surface of a partially transparent mask according to an embodiment of the present invention.
3 schematically shows a front surface of a partially transparent mask according to an embodiment of the present invention.
4 schematically shows a layer configuration of a transparent film according to an embodiment of the present invention.
5 shows experimental results of anti-fogging performance of Examples and Comparative Examples of the present invention.
6 shows experimental results of scratch resistance performance of Examples and Comparative Examples of the present invention.
7 shows experimental results of durability of Examples and Comparative Examples of the present invention.
8 shows experimental results of a transparent film for a partially transparent mask according to embodiments of the present invention.
9 shows experimental results of a transparent film for a partially transparent mask according to embodiments of the present invention.

Various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding of one or more aspects. However, it will also be recognized by one of ordinary skill in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain illustrative aspects of one or more aspects. These aspects are illustrative, however, and some of the various methods in principles of the various aspects may be employed, and the descriptions set forth are intended to include all such aspects and their equivalents.

As used herein, “embodiment”, “example”, “aspect”, “exemplary”, etc. may not be construed as an advantage or advantage in any aspect or design described above over other aspects or designs. .

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from context, "X employs A or B" is intended to mean one of the natural implicit substitutions. That is, X employs A; X employs B; or when X employs both A and B, "X employs A or B" may apply to either of these cases. It should also be understood that the term “and/or” as used herein refers to and includes all possible combinations of one or more of the listed related items.

Also, the terms "comprises" and/or "comprising" mean that the feature and/or element is present, but excludes the presence or addition of one or more other features, elements and/or groups thereof. should be understood as not

In addition, it will be understood that singular expressions such as "above" and "above" include plural expressions, unless explicitly indicated otherwise in this specification. Thus, as an example, a “component surface” includes one or more component surfaces.

Also, terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, the terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are generally understood by those of ordinary skill in the art to which the present invention belongs. have the same meaning as Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

1 schematically shows a front surface of a partially transparent mask according to an embodiment of the present invention.

The partially transparent mask shown in FIG. 1 includes a mask body 10 having a through hole 11 formed therein; Earring straps 20 respectively attached to both ends of the mask body 10; and a transparent film 30 disposed on the rear surface of the mask body 10 and partially coupled to the mask body 10 .

Accordingly, the shape of a person's mouth can be seen through the through hole 11 side of the mask body 10 .

The partially transparent mask shown in FIG. 1 shows a state in which the nose cover part 40 and the chin cover part 50, which will be described later, are not folded.

2 schematically shows a rear surface of a partially transparent mask according to an embodiment of the present invention.

As shown in FIG. 2 , the nose cover part 40 is provided on the upper side of the rear surface of the mask body 10 . Such a nose cover part 40 corresponds to a structure that can be folded at the contact line with the mask body 10, and the nose cover part 40 has a nose fixing part 41 made of a material such as metal disposed therein. do.

On the other hand, a chin cover part 50 is provided on the lower side of the rear surface of the mask body 10 . Such a chin cover portion 50 corresponds to a structure that can be folded at the contact line with the mask body 10 .

The partially transparent mask shown in FIG. 2 shows a state in which the nose cover part 40 and the chin cover part 50, which will be described later, are folded upward and downward, respectively.

On the other hand, the transparent film 30 is disposed in the space between the contact line between the nose cover part 40 and the mask body 10 and the contact line between the chin patch part and the mask body 10 .

Preferably, the transparent film 30 may be attached to a portion of the mask body 10 with an adhesive or the like.

3 schematically shows a front surface of a partially transparent mask according to an embodiment of the present invention.

The partially transparent mask shown in FIG. 3 has a shape in which the transparent film 30 is disposed on the front side of the mask, compared with the partially transparent mask described with reference to FIGS. 1 and 2 . Likewise in this case, the transparent film 30 may be attached to a partial region of the mask body 10 with an adhesive or the like.

4 schematically shows a layer configuration of a transparent film 30 according to an embodiment of the present invention.

The first functional coating layer 31 has a thickness of 10 micrometers or less, and is coated with a coating solution including an antibacterial additive and a hard coating agent. Preferably, the first functional coating layer 31 has a thickness of 1 to 5 micrometers, more preferably, has a thickness of 2 to 3 micrometers.

Such a first functional coating layer 31 corresponds to a coating layer corresponding to the front side of the mask, and may be formed by coating a coating solution on the first surface of the base layer 32 .

When implementing a product through a transparent plastic film such as PET, PP, PE, PC, PMMA, etc. from a partially transparent mask, when the product surface is contaminated or when wiping it, scratches occur and reduce the transparency to show the mouth, the purpose of the mouth protection mask can cause problems.

In contrast, in the present invention, in order to make the transparent film 30 have scratch resistance and to perform an antibacterial function for stably removing viruses such as corona, polyurethane acrylate oligomer, acrylic type on the base layer 32 . and a first functional coating layer 31 thinly coated with a coating solution containing a monomer (monofunctional and/or polyfunctional acrylic monomer), a photoinitiator, a slip additive, and an antibacterial additive.

The polyurethane acrylate oligomer and acrylic monomer (monofunctional and/or polyfunctional acrylic monomer) can be fixed by stably impregnated with zinc oxide of an antibacterial additive to be described later, and high scratch resistance properties can be realized.

In particular, as an acrylate oligomer and an acrylic monomer (monofunctional and/or polyfunctional acrylic monomer) are stably fixed to zinc oxide in units of several tens of nm, the front surface of the transparent film 30 (the first functional coating layer 31 is disposed) side), the zinc oxide does not fall off and is stably fixed on the first functional coating layer 31 so that the antibacterial function can be continuously performed.

Preferably, the first functional coating layer 31 is 50 to 70 parts by weight of a polyurethane acrylate oligomer, 30 to 50 parts by weight of an acrylic monomer, 1 to 5 parts by weight of a photoinitiator, 0.1 to 3 parts by weight of a slip additive, and 1 to It is coated with a coating solution containing 5 parts by weight of an antibacterial additive.

In the above overall content, when the polyurethane acrylate oligomer has less than 50 parts by weight, there is a problem in that scratch resistance is reduced. On the other hand, when the first functional coating layer 31 has more than 70 parts by weight, there is a problem in that the zinc oxide particles are not stably fixed and thus fall off and the antibacterial properties are lowered.

In the above overall content, when the acrylic monomer has less than 30 parts by weight, there is a problem that the durability of the first functional coating layer 31 as a whole is lowered. On the other hand, when the first functional coating layer 31 has more than 50 parts by weight, there is a problem in that the overall first functional coating layer 31 is easily deformed.

In addition, by having the above composition range, it is possible to implement the first functional coating layer 31 having strong bonding to the base layer 32 implemented by PET.

On the other hand, the coating solution for forming the first functional coating layer 31 contains 1 to 5 parts by weight of the antibacterial additive, thereby imparting antibacterial properties to the first functional coating layer 31 . Preferably, the antimicrobial additive includes a dispersion containing zinc oxide powder, and the zinc oxide particles of the zinc oxide powder have a diameter of 5 nm to 30 nm.

In general, metal-based antibacterial additives that can be used for antibacterial films, etc. include Cu, Ag, TiO ₂ and the like.

In the case of a general antibacterial film, inexpensive Cu is used a lot, but when Cu is used as a component of an antibacterial additive in a partially transparent mask, the color of the transparent film 30 is yellow as a whole, which has a great effect on the transparency or haze of the product. There is a problem that this affects the image of the product badly. In addition, in the case of such Cu, there is a problem in that adhesion with the polyurethane acrylate oligomer and acrylic monomer for implementing scratch resistance is not good.

In the case of Ag, it is known that the performance is relatively better among metal-based antibacterial additives, but the price is high and research results that it can be harmful to the human body are continuously coming out. may cause In addition, in the case of such Ag, there is a problem in that the adhesion with the polyurethane acrylate oligomer and the acrylic monomer for implementing scratch resistance is not good.

In _{the case of TiO 2} , it is very good because it has no color at a low price and does not affect transparency or haze. There is a problem of decreasing. In addition, in _{the case of such TiO 2} , there is a problem in that adhesion with the polyurethane acrylate oligomer and acrylic monomer for implementing scratch resistance is not good.

On the other hand, in the case of using zinc oxide having a diameter of 5 nm to 30 nm in the polyurethane polyurethane acrylate oligomer and the acrylic monomer in the first functional coating layer 31 as in the embodiments of the present invention, scratch resistance with a thin thickness It is possible to prevent an increase in haze of the entire transparent film 30 by the first functional coating layer 31 at the same time, and to perform a continuous antibacterial function.

Preferably, the antimicrobial additive comprises a dispersion comprising 65 to 75 parts by weight of an organic solution, 15 to 25 parts by weight of a dispersant, and 15 to 25 parts by weight of zinc oxide powder, and the zinc oxide particles have a diameter of 5 nm to 5 nm. 30 nm. In the case of an antimicrobial additive having such a content, it is possible to exhibit an effect of minimizing haze while performing an antibacterial function well.

More preferably, the diameter of the zinc oxide particles is 10 nm to 20 nm. In this case, the occurrence of haze can be minimized by minimizing aggregation of zinc oxide and making the best dispersion state.

On the other hand, the base layer 32 is disposed below the first functional coating layer (31). Such a base layer 32 has a thickness of 150 to 500 micrometers in order for the transparent film 30 to have sufficient durability. Preferably, the base layer 32 has a thickness of 180 to 250 micrometers.

Preferably, the base layer 32 includes polyethylene terephthalate (PET). The base layer 32 of such a component can stably form a coating layer of the polyurethane acrylate oligomer and acrylic monomer of the first functional coating layer 31 described above.

As the transparent plastic film, PET, PP, PE, PC, PMMA, etc. may be considered. PP and PE, which are inexpensive, do not have good durability, and PC and PMMA have a problem in that they are expensive.

On the other hand, PET has high transmittance and durability at a relatively low price.

The second functional coating layer 33 has a thickness of 10 micrometers or less and is coated with a coating solution containing an antifogging agent. Preferably, the second functional coating layer 33 has a thickness of 1 to 5 micrometers, more preferably, has a thickness of 2 to 3 micrometers.

In the partially transparent mask of the present invention, by implementing the anti-fogging function with the second functional coating layer 33, it is possible to prevent the phenomenon that the base layer 32 becomes opaque due to moisture and breath that occur naturally as breathing and ignition occur.

In an embodiment of the present invention, by implementing the second functional coating layer 33 by coating the base layer 32 with a coating solution containing titanium dioxide powder, a dispersing agent and a photocatalyst solution, a binder, a leveling agent, and a photoinitiator, a hydrophilic coating layer is formed It may be formed on the base layer 32 .

The second functional coating layer 33 may prevent a phenomenon of becoming opaque when moisture occurs by lowering the water contact angle of the surface.

Preferably, the coating solution for forming the second functional coating layer 33 is 1 to 5 parts by weight of titanium dioxide powder, 30 to 50 parts by weight of a dispersant and a photocatalyst solution, 10 to 20 parts by weight of a silane-based binder, 5 to 10 parts by weight a leveling agent, and 5 to 10 parts by weight of a photoinitiator.

When the product is wiped off with a tissue or alcohol swab, the second functional coating layer 33 corresponding to the anti-fogging coating layer is not removed together with the second functional coating layer 33, and the second functional coating layer 33 is the base layer. Because it is a form that is firmly combined with (32), it is durable and can be wiped off and reused when the inside is contaminated.

Preferably, the titanium dioxide has a particle diameter of 1 to 100 nm. In such a particle diameter, titanium dioxide can be firmly fixed to the second functional coating layer 33, and also it is possible to exhibit the effect of minimizing haze.

Since the second functional coating layer 33 of the above composition forms a layer in a form combined with the base layer 32 of the PET component, it is possible to exhibit the effect of maintaining good anti-fogging properties even after wiping.

As described above, the first functional coating layer 31 includes zinc oxide having a particle diameter of 5 nm to 30 nm, and the second functional coating layer 33 includes titanium dioxide having a particle diameter of 1 to 100 nm. It can exhibit the effect of minimizing haze while stably performing antibacterial and anti-fogging functions.

By forming the first functional coating layer 31 on the outer surface of the transparent film 30 of the partially transparent mask of the present invention described above, antibacterial properties and scratch resistance are stably implemented, and thus the transparency is reduced due to the occurrence of scratches on the product surface. phenomenon can be prevented. In addition, by the combination of the polyurethane acrylate oligomer, the acrylic monomer, and the zinc oxide particles, it is also possible to prevent a decrease in antibacterial performance due to the occurrence of scratches.

In combination with the first functional coating layer 31 as described above, the base layer 32 is made of PET with good transparency so that the shape of the mouth can be clearly identified, and the second functional coating layer 33 capable of performing an anti-fogging function on the inner surface ), it is possible to prevent a phenomenon in which the surface becomes cloudy due to moisture during burning.

In addition, due to the above composition and composition range, both the inside and the outside have excellent durability and, when contaminated, there is an advantage that the performance is not deteriorated even after wiping, so that it can be reused.

5 shows experimental results of anti-fogging performance of Examples and Comparative Examples of the present invention.

The manufacturing process of Examples and Comparative Examples is as follows.

Example 1 - PET a functional coating layer 2㎛ thick consisting of 50 parts by weight of polyurethane acrylate oligomer, 40 parts by weight of monofunctional and polyfunctional acrylic monomers, 1 part by weight of photoinitiator, 0.8 parts by weight of slip additive, and 2 parts by weight of zinc oxide dispersion. 2 μm thick functional coating layer prepared by coating on the upper surface of the base layer 32, and consisting of 3 parts by weight of titanium dioxide, 45 parts by weight of a dispersant and a photocatalyst solution, 17 parts by weight of a salan-based binder, 4 parts by weight of a leveling agent, and 3 parts by weight of a photoinitiator was prepared by coating the lower surface of the PET base layer 32 . A partially transparent mask was manufactured using the thus-made transparent film 30 . The zinc oxide dispersion includes 70 parts by weight of Ethyle Cellosolve as an organic solvent, 20 parts by weight of zinc oxide having particles of 10 to 20 nm by weight, and 20 parts by weight of a dispersant.

Comparative Example 1 - A partially transparent mask was manufactured using a transparent film 30 made of only PET.

Comparative Example 2 - A partially transparent mask was prepared by coating the PET base layer with an antifogging coating solution generally used.

5(A), (B), and (C) show photographs of Example 1, Comparative Example 1, and Comparative Example 2, respectively.

In the case of anti-fogging performance, it can be seen that in the products of Example 1 and Comparative Example 2 in which the anti-fogging coating layer is formed, moisture does not occur and transparency is maintained so that the shape of the mouth can be seen as it is. In Comparative Example 1 using a general PET material, it can be confirmed that moisture is generated on the PET surface due to the breath generated during conversation, thereby obscuring the shape of the mouth.

6 shows experimental results of scratch resistance performance of Examples and Comparative Examples of the present invention.

Scratch measurement results were performed with steel wool (#0000) on the surface through the rubbing test equipment at 500g 80rpm 200 times reciprocating condition.

In Example 1, there was no scratch generation due to the scratch resistance performance of the product surface, and in the case of Comparative Examples 1 and 2, many scratches occurred on the product surface. Therefore, in the case of 1 and 2 in comparison, it means that scratches may occur when wiping the surface of the product, and transparency may be reduced by the scratches.

7 shows experimental results of durability of Examples and Comparative Examples of the present invention.

In order to compare the durability of the product, the anti-fogging coating layers of Example 1 and Comparative Example 2 were reciprocally wiped with a general tissue 5 times, and then the anti-fogging performance and durability were evaluated using a steam device. In the case of Example 1, it was confirmed that the anti-fogging performance before and after wiping the anti-fogging coating layer was the same. could

This means that the product of Comparative Example 2 can only be used once when it is contaminated by applying it together with the scratch measurement result, but Example 1 can be used again after wiping it off.

8 shows experimental results of the transparent film 30 for a partially transparent mask according to embodiments of the present invention.

(A), (B), (C), (D), and (E) of FIG. 8 are manufactured by changing only the following items in the structure of the transparent film 30 as in Example 1 described above. did.

Example_2 - 50 parts by weight of polyurethane acrylate oligomer, 40 parts by weight of monofunctional and polyfunctional acrylic monomers, 1 part by weight of photoinitiator, and 0.8 parts by weight of slip additive 1 part by weight of zinc oxide dispersion was added to a 2 μm-thick hard It was prepared by forming a coating solution.

Example_3 - Compared with Example 2, 2 parts by weight of a zinc oxide dispersion was added to form a hard coating solution having a thickness of 2 μm.

Example_4 - Compared with Example 2, 3 parts by weight of a zinc oxide dispersion was added to form a hard coating solution having a thickness of 2 μm.

Example_5 - Compared with Example 2, 10 parts by weight of a zinc oxide dispersion was added to form a hard coating solution having a thickness of 2 μm.

Example_6 - Compared with Example 2, 25 parts by weight of a zinc oxide dispersion was added to form a hard coating solution having a thickness of 2 μm.

The physical property measurement results of Examples 2 to 6 are as follows.

Example 2 Example 3 Example 4 Example 5 Example 6 transmittance 92.38 92.28 91.74 90.11 89.62 Haze 0.73 0.84 0.94 1.49 3.09 antibacterial x O O O O

As shown in Table 1 above, as the content of the zinc oxide dispersion increased, the transmittance showed a tendency to decrease, and in the case of Example 6, the transmittance decreased as it fell to 90% or less, and the color of the zinc oxide with the naked eye was the intrinsic color of zinc oxide. I could see it appearing in white. It can be confirmed that when the zinc oxide dispersion is added in an excessive amount, it can become a hindrance factor in the product for making the mouth visible, which is the purpose of the fire extinguishing mask.

On the other hand, similarly to the transmittance, the haze also increased as the content of the zinc oxide dispersion increased, meaning that the product looked cloudy.

In general, when the transmittance is 90% or more and the haze is less than 1%, it is said to show very good transparency. In the case of Examples 5 and 6, the haze was measured to be high, and in the case of Example 4, a value close to 1% appeared as 0.94%, so there is a possibility of exceeding 1% due to production deviation.

The difference in antibacterial activity may occur depending on the content of zinc oxide, and in the case of Example 2 in which the content of zinc oxide is added to a minimum, the optical properties are very good, but as a result of the antibacterial test, perfect antibacterial activity was not realized at a level of 94%. In the case of Example 3, it was possible to satisfy both the optical properties and the antibacterial power by exhibiting 99.99% of the antibacterial power while implementing the optical properties similar to those of Example 1.

9 shows experimental results of the transparent film 30 for a partially transparent mask according to embodiments of the present invention.

9A shows the experimental results of the antibacterial ability of the partially transparent mask according to Example 2, and FIG. 9B shows the experimental results of the antibacterial ability of the partially transparent mask according to Example 3.

According to an embodiment of the present invention, since the mouth part is transparent, it can be used by a hearing impaired or an instructor using oral shoes, and it can show the shape of the mouth more clearly by preventing moisture from forming inside with high transparency, At the same time, it is possible to provide a partially transparent mask capable of preventing the spread of corona and the like by having stable antibacterial properties.

According to an embodiment of the present invention, it is possible to provide a partially transparent mask having a low haze while having an antibacterial function.

According to an embodiment of the present invention, it is possible to exhibit the effect of stably maintaining the antibacterial function for a long time.

According to an embodiment of the present invention, it is possible to suppress the occurrence of scratches to exhibit the effect of preventing a decrease in transparency due to use.

According to an embodiment of the present invention, since the coating layer performing the anti-fogging function is firmly bonded to the base layer, it is possible to exhibit the effect of minimizing the peeling of the coating layer having the anti-fogging function due to use.

According to one embodiment of the present invention, as the functional coating layer of the transparent film as a whole is firmly combined, it is possible to continuously maintain antibacterial and anti-fogging properties, and to exhibit the effect of being reusable.

According to an embodiment of the present invention, even if the product surface of the transparent film is wiped, scratches do not occur, and the effect of maintaining antibacterial and antifogging properties can be exhibited.

According to an embodiment of the present invention, it is possible to exhibit the effect of minimizing contamination of the transparent film.

The description of the presented embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not to be limited to the embodiments presented herein, but is to be construed in the widest scope consistent with the principles and novel features presented herein.

Claims (8)

A partially transparent mask comprising:
a mask body having a through hole formed therein;
earring straps respectively attached to both ends of the mask body; and
a transparent film disposed on the front or rear surface of the mask body, and partially coupled to the mask body;
The transparent film has a thickness of 10 micrometers or less, an antibacterial additive, and a first functional coating layer coated with a coating solution comprising a hard coating agent;
a base layer disposed under the first functional coating layer;
A second functional coating layer having a thickness of 10 micrometers or less and coated with a coating solution containing an antifogging agent,
The first functional coating layer and the second functional coating layer form a layer in a form combined with the base layer,
The first functional coating layer comprises a layer coated with a coating solution comprising a polyurethane acrylate oligomer, an acrylic monomer, a photoinitiator, a slip additive, and an antibacterial additive,
The antimicrobial additive includes a dispersion comprising 65 to 75 parts by weight of an organic solution, 15 to 25 parts by weight of a dispersant, and 15 to 25 parts by weight of zinc oxide powder,
The antibacterial additive is a partially transparent mask comprising zinc oxide having a particle diameter of 5 to 30 nm.


delete delete The method according to claim 1,
The first functional coating layer contains 50 to 70 parts by weight of a polyurethane acrylate oligomer, 30 to 50 parts by weight of an acrylic monomer, 1 to 5 parts by weight of a photoinitiator, 0.1 to 3 parts by weight of a slip additive, and 1 to 5 parts by weight of an antibacterial additive. A partially transparent mask comprising a layer coated with a coating solution.
The method according to claim 1,
The base layer has a thickness of 150 to 500 micrometers, comprising polyethylene terephthalate, a partially transparent mask.
delete The method according to claim 1,
The second functional coating layer is coated with a coating solution comprising titanium dioxide powder, a dispersant and a photocatalyst solution, a binder, a leveling agent, and a photoinitiator, a partially transparent mask.
The method according to claim 1,
The second functional coating layer is a partially transparent mask comprising titanium dioxide having a particle diameter of 1 to 100 nm.

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