JP7031899B1 - mask - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inactivate a virus adhering to a non-woven fabric of a mask body, inactivate a virus adhering to a portion other than the non-woven fabric of the mask body, and suppress the re-spreading of the virus adhering to the mask. The purpose is to provide. SOLUTION: The mask main body 10 including a non-woven fabric having anti-virus property and a fixing portion 50 provided on the side portion of the mask main body 10 and fixing the mask main body 10 to the wearer's face are provided, and the fixing portion 50 is provided. , The mask 100 is made of a material having antiviral properties. [Selection diagram] Fig. 1

Description

The present invention relates to a mask, and more particularly to a mask that inactivates a virus attached to the mask and suppresses the re-spreading of the virus attached to a site other than the mask body.

Currently, acute respiratory disease (COVID-19) caused by infection with the new coronavirus (SARS-CoV-2) is prevalent worldwide. The new coronavirus is transmitted between humans by droplet infection caused by droplets generated by coughing or sneezing, or by contact infection through something that touches the hand such as a doorknob. Therefore, it is recommended to wear a mask to prevent the new coronavirus from invading the human body through the mouth and to suppress the spread of droplets generated by coughing or sneezing.

Conventionally, in order to suppress influenza virus infection, a mask having a function of capturing influenza virus on a non-woven fabric constituting the mask body has been proposed. However, simply catching the influenza virus will cause the influenza virus to propagate in the mask body. Then, the influenza virus propagated in the mask body re-spreads due to coughing or sneezing. In addition, by touching the non-woven fabric of the mask body when removing the mask, the propagated influenza virus adheres to the hand and invades the human body from the mouth, or adheres to the door knob etc. and the influenza virus re-spreads. Become.

For this reason, even in the case of countermeasures against the new coronavirus, it is difficult to suppress the re-spreading of the new coronavirus and the spread of the new coronavirus by simply providing the mask body with a virus-catching function. it is conceivable that.

On the other hand, a mask using an anti-influenza virus agent that inactivates influenza virus on the non-woven fabric of the mask body has also been proposed (for example, Patent Document 1). According to such a mask, the influenza virus trapped in the non-woven fabric of the mask body is inactivated by the anti-influenza virus agent, so that it is possible to suppress the spread of influenza virus infection to some extent.

Therefore, even in the countermeasures against the new coronavirus, by using an anti-influenza virus agent that inactivates the new coronavirus in the non-woven fabric of the mask body, the new coronavirus captured in the non-woven fabric of the mask body is not affected by the anti-virus agent. Since it is activated, it can be expected to suppress the spread of the new coronavirus to some extent.

Japanese Unexamined Patent Publication No. 08-333271

However, when wearing a mask, viruses such as the new coronavirus often adhere to the non-woven fabric of the mask body through which the user's exhaled breath and inspiration pass, but they may also adhere to other parts. Then, the virus propagated at the attached site may be scattered from the mask due to coughing or sneezing, and the virus may re-spread.

In addition, by touching the site where the virus has propagated when removing the mask, the propagated virus may adhere to the hand and invade the human body through the mouth, or it may adhere to the doorknob and the virus may re-spread. ..

The present invention is a mask that inactivates the virus attached to the non-woven fabric of the mask body, inactivates the virus attached to a part other than the non-woven fabric of the mask body, and suppresses the re-spreading of the virus attached to the mask. The purpose is to provide.

The mask of the present invention
A mask body containing a non-woven fabric with antiviral properties,
A fixing portion provided on the side portion of the mask body and fixing the mask body to the wearer's face, and a fixing portion.
Equipped with
The fixation portion is made of a material having antiviral properties.
It's a mask.

According to the mask of the present invention, the virus attached to the non-woven fabric of the mask body can be inactivated, and the virus attached to the fixed portion can be inactivated. As a result, it is possible to prevent the virus attached to the fixed portion from adhering to the fingers when the mask is removed, and to prevent the virus attached to the mask from re-spreading.

FIG. 1 is a front view of the mask according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a cross-sectional view of the vicinity of region B in FIG. FIG. 4 is a graph showing the results of an antiviral test on the mask body. FIG. 5 is a graph showing the results of an antiviral test on the ear hook.

The mask according to the embodiment of the present invention is
A mask body containing a non-woven fabric with antiviral properties,
A fixing portion provided on the side portion of the mask body and fixing the mask body to the wearer's face, and a fixing portion.
Equipped with
The fixation portion is formed of a material having antiviral properties (first configuration).

According to the above configuration, the mask body contains a non-woven fabric having antiviral properties, and the fixing portion is formed of a material having antiviral properties. Therefore, the virus attached to the non-woven fabric of the mask body can be inactivated, and the virus attached to the fixed portion can be inactivated. As a result, it is possible to prevent the virus attached to the fixed portion from adhering to the fingers when the mask is removed, and to prevent the virus attached to the mask from re-spreading.

In the first configuration above
The mask body is
A plurality of non-woven fabrics are laminated, and among the plurality of non-woven fabrics, a non-woven fabric having antiviral properties may be used for at least the surface layer arranged on the side opposite to the face side of the user when worn. Good (second configuration).

According to the above configuration, among the plurality of nonwoven fabrics constituting the mask body, at least the surface layer arranged on the side opposite to the face side of the user when worn is formed of the nonwoven fabric having antiviral properties. Therefore, the virus adhering to the non-woven fabric of the mask body can be inactivated.

In the first or second configuration above
It is further provided with a shape-retaining material that is arranged between the laminated or folded non-woven fabrics of the mask body and that retains the shape of the mask body.
The shape-retaining material may be made of a material having antiviral properties (third configuration).

According to the above configuration, the shape-retaining material placed between the laminated or folded nonwoven fabrics is made of a material having antiviral properties. Therefore, the virus that has passed through the non-woven fabric of the mask body and adhered to the shape-retaining material can be inactivated. This makes it possible to suppress the growth of the virus attached to the shape-retaining material and prevent the virus attached to the shape-retaining material from re-spreading to the outside of the mask due to coughing or sneezing.

In the third configuration above
The shape-retaining material is
A metal thin film having antiviral properties may be formed on the surface by using a vacuum film forming means (fourth configuration).

According to the above configuration, the shape-retaining material can be provided with an antiviral property different from the antiviral property of the non-woven fabric of the mask body by the metal thin film. Therefore, for example, even if the surface shape of the shape-retaining material is flat and the surface shape is such that the virus easily adheres to the non-woven fabric of the mask body, the virus is easily inactivated and the mask has high antiviral property. be able to.

[Embodiment 1]
Hereinafter, the mask 100 according to the first embodiment of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the figure are designated by the same reference numerals and the description thereof will not be repeated. In addition, in order to make the explanation easy to understand, in the drawings referred to below, the configuration is shown in a simplified or schematic manner, or some constituent members are omitted. Further, the dimensional ratio between the constituent members shown in each figure does not necessarily indicate the actual dimensional ratio.

In the following figure, for convenience of explanation, the arrow U indicates the upward direction of the mask, and the arrow D indicates the downward direction. The arrow F indicates the forward direction, and the arrow B indicates the backward direction. The arrow R indicates the right direction, and the arrow L indicates the left direction.

[mask]
First, the overall configuration of the mask 100 will be described. FIG. 1 is a front view of the mask 100 according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a cross-sectional view of the vicinity of region B in FIG. As shown in FIG. 1, the mask 100 includes a mask body 10, a shape-retaining material 30, and an ear hook 50.

The mask 100 of this embodiment is a so-called pleated mask. The mask body 10 is a member that covers a predetermined range (for example, a range including the nose and mouth) of the user's face by spreading and using the pleats (folds) 25.

The mask main body 10 is configured by laminating three layers of non-woven fabrics of a front surface layer 21, an intermediate layer 22, and a back surface layer 23 (see FIG. 3). The front surface layer 21, the intermediate layer 22, and the back surface layer 23 are formed with a plurality of pleats 25 extending in the left-right direction in a laminated state. The upper side, lower side, left side, and right side of the front surface layer 21, the intermediate layer 22, and the back surface layer 23 are fixed by the welding portion 27.

When the user wears the mask 100 on the face, the front surface layer 21 of the mask 100 is placed on the opposite side of the face, and the back surface layer 23 of the mask 100 is placed on the face side.

The surface layer 21 is a layer of non-woven fabric arranged on the side opposite to the face side of the user when the user wears the mask 100. The surface layer 21 is made of a non-woven fabric having antiviral properties.

The nonwoven fabric having antiviral properties may be a substrate coated with an antiviral agent or the like, or the nonwoven fabric material itself may contain an antiviral agent. In this embodiment, a non-woven fabric base material coated with an antiviral agent is used.

The intermediate layer 22 is a layer that collects viruses, bacteria, and the like inside the surface layer 21. As the intermediate layer 22, a melt blown non-woven fabric can be used.

The back surface layer 23 is a layer of non-woven fabric arranged on the user's face when the user wears the mask 100. Since the back surface layer 23 comes into contact with the user's face, it is preferable to use a highly flexible non-woven fabric.

The thickness of the non-woven fabric constituting the front surface layer 21, the intermediate layer 22, and the back surface layer 23 is not particularly limited, but the barrier properties of the mask body 10 are such that PFE, BFE, and VFE are 99% or more, respectively. It is preferable to select a non-woven fabric constituting the front surface layer 21, the intermediate layer 22, and the back surface layer 23. PFE contains a collection rate of particles having a size of about 0.1 μm, BFE contains a collection rate of particles containing bacteria of about 0.3 μm, and VFE contains a virus of about 0.1 μm to 5.0 μm. It shows the collection rate of the collected particles.

The shape-retaining material 30 is a member that holds the shape of the mask body 10. In the present embodiment, the first shape-retaining material 31 and the second shape-retaining material 32 are provided as the shape-retaining material 30.

The first shape-retaining material 31 is arranged near the upper side of the mask body 10 and is held between the folded non-woven fabrics (front surface layer 21, intermediate layer 22, and back surface layer 23) (see FIG. 2). .. The first shape holding material 31 is a member also called a nose fitter. By bending the first shape holding material 31 according to the shape of the nose while the mask body 10 is placed on the face of the user, the mask body 10 can be made closer to the user's face.

The second shape holding material 32 is arranged near the center in the vertical direction of the mask main body 10 and is held between the surface layer 21 and the intermediate layer 22 (see FIGS. 2 and 3). The second shape holding material 32 is a member for keeping the shape of the mask body 10 curved so that the central portion of the mask body 10 does not easily come into contact with the face when the user places the mask body 10 on the face. Is.

The shape-retaining material 30 is made of a resin such as polypropylene, a metal such as aluminum, or a combination of the resin and the metal, and has antiviral properties.

In the present embodiment, the base material of the shape-retaining material 30 is imparted with antiviral properties by forming a metal thin film on the surface using a vacuum film forming means. As the metal thin film, for example, titanium oxide or a monovalent copper compound can be used, and as the vacuum film forming means, for example, a vacuum film forming technique such as a known sputtering method can be used.

The antiviral property of the shape-retaining material 30 is not limited to the vacuum film forming means. For example, the base material may be coated with an antiviral agent, or the material itself of the shape-retaining material 30 may contain the antiviral agent.

The ear hook portion 50 is a member that, when the user wears the mask 100 on the face, hangs it on the ear (auricle) and fixes the mask body 10 to the wearer's face. The ear hook 50 is made of a material having antiviral properties. The end of the ear hook 50 is attached by a welded portion 28 on the side of the mask body 10. The ear hook portion 50 corresponds to the fixed portion of the present invention.

The ear hook 50 can be formed of, for example, a stretchable woven fabric. For example, a woven fabric structure in which warp and weft are woven by bag weaving and the front and back structures are connected by rubber threads can be used. By adopting a woven fabric structure using high count yarn for the warp, the ear hook portion 50 is soft and soft to the touch, so that the mask 100 can be made so that the ear does not hurt even if the mask is worn for a long time.

The antiviral property of the ear hook portion 50 may be one in which the woven fabric structure as a base material is coated with an antiviral agent, or the thread itself constituting the woven fabric structure may contain the antiviral agent. In this embodiment, a woven fabric coated with an antiviral agent is used.

[Antiviral evaluation]
In order to evaluate the antiviral property of the mask 100 according to the embodiment, the non-woven fabric used for the surface layer 21 of the mask body 10 and the woven fabric used for the ear hook 50 are used to prevent the new coronavirus. The activation effect was evaluated.

A new type coronavirus (SARS-CoV-2) was used as a test microorganism.
・ Use purified virus ・ Infection value is 10 ^ 5 PFU / mL (or 10 ^ 5 TCID50 / mL) or more at the time of inoculation

(Test method)
-Implemented with reference to ISO18184 (JIS L 1922) "Antiviral test of textile products".
・ Inoculate the test product with the new coronavirus and let it stand for 2 hours.
・ After the reaction, mix it with the recovery solution to wash out the virus from the fibers.
-Measure the viral load using the recovered fluid.
-Measure the infectious titer by the plaque method.
・ The number of implementations will be 3 times according to the standard.

(examined goods)
・ Unprocessed standard non-woven fabric (mask body)
・ Anti-virus processed non-woven fabric (mask body)
・ Unprocessed standard woven fabric structure (ear hook)
・ Anti-virus processed woven fabric (ear hook)

(Condition temperature)
・ 25 ℃

(Time of action)
・ 0 hours (measurement 4 points x implementation 3 times)
・ 2 hours (measurement 4 points x implementation 3 times)

(Calculation of antiviral activity value)
-Antiviral activity value Mv = lg (Vb) -lg (Vc)
-Lg (Vb): Mean of the common logarithmic values of the infectious values of the three samples after leaving the standard cloth for 2 hours-lg (Vc): The common logarithmic values of the infectious values of the three samples after leaving the processed sample for 2 hours. An average value of Mv ≧ 3.0 is considered to have a sufficient effect.

(Calculation of reduction rate (%))
-Rate of decrease in infectious titer after 2 hours compared to 0 hours: (1-1 / 10 ^ (logarithmic decrease value)) x 100%

The test results of the above test are shown below. FIG. 4 is a graph showing the results of an antiviral test on the mask body. FIG. 5 is a graph showing the results of an antiviral test on the ear hook. The vertical axis of FIGS. 4 and 5 shows the viral infectivity titer.

The infectious titers of the unprocessed standard non-woven fabric (mask body) and the anti-virus processed non-woven fabric (mask body) are as follows (see FIG. 4).
・ Unprocessed standard non-woven fabric (mask body)
0 hours: 6.3E + 05
2 hours: 4.3E + 05
・ Anti-virus processed non-woven fabric (mask body)
0 hours: 6.3E + 05
2 hours: 2.5E + 02 (detection limit)

The infectious titers of the raw standard woven fabric tissue (ear hook part) and the antiviral processed woven fabric tissue (ear hook part) are as follows (see FIG. 5).
・ Unprocessed standard woven fabric structure (ear hook)
0 hours: 1.2E + 07
2 hours: 6.5E + 06
・ Anti-virus processed woven fabric (ear hook)
0 hours: 1.2E + 07
2 hours: 2.5E + 03 (detection limit)

The reduction rates of the antiviral activity value and the infectious titer of the antiviral processed non-woven fabric (mask body) and the antiviral processed textile tissue (ear hook part) by the above test are as follows.
・ Anti-virus processed non-woven fabric (mask body)
Antiviral activity value (Mv): 3.24
Infection rate reduction rate: -99.96%
・ Anti-virus processed woven fabric (ear hook)
Antiviral activity value (Mv): 3.41
Infection rate reduction rate: -99.98%

Based on the evaluation of the inactivating effect on the new coronavirus described above, the antiviral activity value (Mv) was 3.24 for the antiviral processed non-woven fabric (mask body) and 3 for the antiviral processed textile structure (ear hook). Since it is .41 and Mv ≧ 3.0 in each case, it can be considered that there is a sufficient effect.

The rate of decrease in virus infection titer was -99.96% for the antiviral processed non-woven fabric (mask body) and -99.98% for the antiviral processed textile tissue (ear hook), both in 2 hours. The rate of decrease was -99.9% or more.

According to the mask 100 according to the present embodiment described above, the mask body 10 contains a non-woven fabric having antiviral properties, and the ear hook portion 50 is formed of a material having antiviral properties. Therefore, the new coronavirus attached to the non-woven fabric of the mask body 10 can be inactivated, and the new coronavirus attached to the ear hook 50 can be inactivated. As a result, it is possible to prevent the new coronavirus attached to the ear hook 50 from adhering to the fingers when the mask 100 is removed, and to prevent the new coronavirus attached to the mask 100 from re-spreading.

Further, the shape-retaining material 30 arranged between the non-woven fabrics constituting the mask main body 10 is made of a material having antiviral properties. Therefore, the new coronavirus adhering to the shape-retaining material 30 can be inactivated. As a result, it is possible to suppress the proliferation of the new coronavirus attached to the shape-retaining material 30, and to prevent the new coronavirus attached to the shape-retaining material 30 from re-spreading to the outside of the mask 100 due to coughing or sneezing. can.

In the above test, the inactivating effect on the new coronavirus was evaluated, but the effect can be expected on other viruses and bacteria. It also has antibacterial and deodorant effects, antibacterial effects, and antifungal effects.

[Modification example]
The mask according to the present invention is not limited to the present embodiment described above. For example, the shape of the mask body is not limited to the shape of the present embodiment. For example, although the pleated mask is used in the present embodiment, a flat mask or a three-dimensional mask may be used.

The non-woven fabric constituting the mask body has a three-layer structure, but is not limited to the three-layer structure. It may have two or less layers or four or more layers. Further, although the welding means is used as a means for fixing the plurality of non-woven fabrics, other means such as adhesion may be used.

In the present embodiment, the non-woven fabric having antiviral property is used only for the surface layer 21 of the mask body, but the non-woven fabric having antiviral property may be used in addition to the surface layer 21.

The antiviral agent used for the mask body and the antiviral agent used for the fixed portion may be the same or different types. When an antiviral agent is used for each of the plurality of layers of the non-woven fabric constituting the mask body, they may all be the same or different antiviral agents may be used for each layer.

Although the woven fabric is used as the material for the ear hook, other materials may be used. For example, the ear hook portion may be integrally formed with a rubber-like material or a material constituting the mask body. Further, the ear hook portion is an example of the fixed portion, and the fixed portion may be hung on the head to fix the mask to the user's face.

The position and number of the shape-retaining materials are not limited to the positions and numbers in the present embodiment.

Although the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiment, and the above-mentioned embodiment can be appropriately modified and carried out within a range not deviating from the gist thereof.

100 Mask 10 Mask body 50 Fixed part

Claims (3)

A mask body containing a non-woven fabric with antiviral properties,
A fixing portion provided on the side portion of the mask body and fixing the mask body to the wearer's face, and a fixing portion.
Equipped with
The fixing portion is formed of an elastic woven fabric structure, and the woven fabric structure is imparted with antiviral properties.
Further, it is provided with a shape-retaining material that is arranged between the laminated or folded non-woven fabrics of the mask body and that retains the shape of the mask body.
The shape-retaining material is made of a material having antiviral properties.
mask. The mask body is
A plurality of non-woven fabrics are laminated and configured, and among the plurality of non-woven fabrics, a non-woven fabric having antiviral properties is used for at least the surface layer arranged on the side opposite to the face side of the user when worn. ,
The mask according to claim 1. The shape-retaining material is
A metal thin film having antiviral properties is formed on the surface using a vacuum film forming means.
The mask according to any one of claims 1 and 2.

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