JP2011092616A - Sanitary mask and method for removing pathogenic organisms from the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sanitary mask, where pathogenic organisms such as bacteria, and virus are effectively decomposed by using fine ferromagnetic ferrite particles. <P>SOLUTION: The mask body 1 of the sanitary mask A includes a removal layer 11 where fine ferromagnetic ferrite particles 11b are scattered and attached over the base cloth fiber surface to remove the pathogenic organisms; an inner layer 12 arranged on top of the removal layer 11 on its nostril side to pass respiratory air through; and an outer layer 13 arranged on the removal layer 11 opposite the inner layer 12 to pass respiratory air through. In the mask body 1, the respiratory air pass through resistance R1 of the inner layer 12 is made higher than the respiratory air pass through resistance R2 of the outer layer 13. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sanitary mask that decomposes pathogens such as bacteria and viruses, and a method for removing pathogens in sanitary masks. In particular, pathogens taken from the outer layer of the mask body during breathing are retained in the removal layer and removed. The present invention relates to a material capable of reliably degrading pathogens by a magnetic field formed by ferromagnetic ferrite fine particles in a layer.

  There is a method for removing bacteria in the intake air by applying ultrafine particles of calcium zinc ferrite to an air filter made of an alumina ceramic porous body and allowing air to pass through the air filter, thereby removing harmful bacteria floating in the air. It is known (for example, see paragraph numbers [0030] to [0034] of Patent Document 1).

  This is because when bacteria cross a magnetic field formed by ferromagnetic ferrite fine particles such as calcium zinc ferrite, eddy currents are generated in the bacteria, and the bacteria are killed by the eddy currents. Even if it is a sanitary mask that is relatively rough and easy to permeate viruses, by applying this principle, it is possible to break down viruses that are much smaller in size. The prevention effect is expected.

Japanese Patent No. 3888515

  However, a sanitary mask that can effectively remove pathogens such as bacteria and viruses by using the ferromagnetic ferrite fine particles as described above has not been developed yet, and there is an urgent need to solve the problem.

  The present invention has been made to solve the above-described problems.

  The invention according to claim 1 is provided with a mask body covering the nostril portion, and the mask body is coated with dispersed ferromagnetic ferrite fine particles on the fiber surface of the base fabric, and the ferromagnetic ferrite fine particles allow bacteria and viruses to be deposited. A removal layer that removes pathogens, and the like, and is placed on the nostril side of the removal layer, an inner layer that allows breathing air to pass through, and is placed on the opposite side of the removal layer to the inner layer, The sanitary mask includes an outer layer that allows breathing air to pass therethrough, and the passage resistance of the inner layer is greater than the passage resistance of the outer layer.

  The invention according to claim 2 is the sanitary mask according to claim 1, wherein the mask body is provided with a protruding portion that protrudes forward so that a ridge line is formed in the vertical direction in the central portion in the left-right direction when viewed from the front. A replaceable inner mask is mounted on the inner layer on the nose mouth side of the mask body, and the inner mask is inserted into and engaged with a groove formed on the back side of the protrusion. An engaging portion is provided.

  The invention according to claim 3 is provided with a mask main body that covers the nostril, and the mask main body is coated with dispersed ferromagnetic ferrite fine particles on the fiber surface of the base fabric. A removal layer that removes pathogens, and the like, and is placed on the nostril side of the removal layer, an inner layer that allows breathing air to pass through, and is placed on the opposite side of the removal layer to the inner layer, A pathogen removal method in a sanitary mask having an outer layer that allows breathing air to pass through, wherein the passage resistance of the inner layer is greater than the passage resistance of the breathing air of the outer layer, and the pathogen is removed. It is the removal method of the pathogen in the sanitary mask made to stay in a layer.

  According to the sanitary mask of claim 1, in the mask body, since the passage resistance of the breathing air of the inner layer is made larger than the passage resistance of the breathing air of the outer layer, pathogens taken from the outer layer are removed in the removal layer. And the pathogen can be reliably removed by the ferromagnetic ferrite fine particles in the removal layer.

  According to the invention described in claim 2, in addition to the effect of the sanitary mask described in claim 1, a replaceable inner mask is mounted on the inner layer on the nostril side of the mask body. Since the inner mask has an engaging portion that is inserted into and engaged with a groove formed on the back side of the protruding portion of the mask body, the inner mask can be prevented from shifting with respect to the mask body. Moreover, the exchange of the inner mask prevents accumulation of bodily fluid in the inner mask and suppresses the reduction of the pathogen removal effect due to the body fluid moving to the removal layer and adhering to the ferromagnetic ferrite fine particles. be able to.

  According to the method for removing a pathogen in the sanitary mask according to claim 3, in the mask body, the passage resistance of the breathing air of the inner layer is made larger than the passage resistance of the breathing air of the outer layer, and the pathogen is placed in the removal layer. Since it is retained, the pathogen can be reliably removed by the ferromagnetic ferrite fine particles in the removal layer.

It is a schematic perspective view of the sanitary mask of this invention. It is the schematic which expanded and showed the cross section of the mask main body of FIG. 1, Fig.2 (a) has shown the example, FIG.2 (b) has shown the other example, respectively. It is the schematic which expanded and showed partially about the removal layer of FIG. 4A and 4B are schematic diagrams for explaining the operation and effect of FIG. 1. FIG. 4A shows a sectional view of the removal layer, and FIG. 4B shows a conceptual diagram of the operation. It is the schematic perspective view which decomposed | disassembled and showed the sanitary mask of FIG. 1, and respond | corresponds to Fig.2 (a). It is the schematic perspective view which decomposed | disassembled and showed the sanitary mask of FIG. 1, and respond | corresponds to FIG.2 (b). It is the schematic perspective view which showed the application example of FIG. 8A and 8B are schematic cross-sectional views taken along line XX in FIG. 7. FIG. 8A shows an exploded view and FIG. 8B shows an assembly view. FIG. 8 is a schematic front view illustrating a process of forming the mask main body and the inner mask of FIG. 7. It is the schematic perspective view which showed the state which mounted | wore the sanitary mask of FIG. It is schematic sectional drawing cut | disconnected by the YY line | wire of FIG.

  An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, A is a sanitary mask, and the sanitary mask A is attached to the nose and removes pathogens such as bacteria and viruses that float in the air during breathing, and provides clean air to the wearer. It is to be sucked and is generally constituted by the mask body 1.

In this embodiment, a description will be given by taking a virus among pathogens as an example. In the present invention, “removal” refers to death due to electric shock or the like, and “passage resistance (R)” refers to both ends of the layer with respect to the air passing mass velocity G (kg / m ² · s) per unit area. Pressure difference ΔP (Pa), that is, R = ΔP / G.

  The mask main body 1 covers the wearer's nostrils, and as shown in FIGS. 2A, 2B, 5 and 6, the removal layer 11, the inner layer 12, and the outer layer 13 are provided. And have.

  As shown in the middle and lower parts of FIG. 3 in which a part of the upper part of the removal layer 11 in FIG. 3 is enlarged, the removal layer 11 has ferromagnetic ferrite fine particles 11b, 11b,... Dispersed on the surface of the fiber f of the base fabric 11a. The virus is removed by the ferromagnetic ferrite fine particles 11b.

  The base fabric 11a is a nonwoven fabric, for example, and is formed of synthetic fibers such as polyester, polyethylene, and polypropylene.

The ferromagnetic ferrite fine particles 11b are made of, for example, a ferrite material such as copper ferrite (CuO · Fe ₂ O ₃ ) or calcium zinc ferrite ((CaO) _x · (ZnO) _{1 -x} · Fe ₂ O ₃ ). It is magnetized to about 1500 gauss to 2000 gauss and is a fine particle having a particle size of 5 nm to 30 nm.

  The ferromagnetic ferrite fine particles 11b are mixed with an organic binder solution obtained by diluting a known organic binder with an organic solvent, and this mixed solution is deposited on the fiber f surface of the base fabric 11a using, for example, a spray method. . The interval between the ferromagnetic ferrite fine particles 11b, 11b,... To be deposited is about several tens μm to several hundreds μm.

  Here, the mechanism of virus decomposition by the ferromagnetic ferrite fine particles 11b will be described. As shown in FIG. 4A, the virus V taken into the removal layer 11 during inspiration during respiration passes through the removal layer 11. At this time, as shown in FIG. 4B, when the virus V crosses the magnetic field m formed by the ferromagnetic ferrite fine particles 11b, an eddy current is generated inside the virus V due to electromagnetic induction. Is considered to be decomposed and removed.

  The inner layer 12 is disposed so as to overlap the nostril portion side of the removal layer 11 and allows breathing air to pass therethrough. For example, the inner layer 12 is a non-woven fabric and is formed of synthetic fibers such as polyester, polyethylene, and polypropylene.

  The outer layer 13 is disposed on the opposite side to the inner layer 12 of the removal layer 11 and allows breathing air to pass therethrough. For example, the outer layer 13 is a nonwoven fabric and is formed of synthetic fibers such as polyester, polyethylene, and polypropylene. .

  The removal layer 11, the inner layer 12, and the outer layer 13 described above are integrally formed, for example, by ultrasonic welding or the like at their peripheral portions (portions indicated by dots in FIGS. 1, 7, and 10). It is joined.

  Here, the passage resistance (R1) of the breathing air of the inner layer 12 is configured to be larger (R1> R2) than the passage resistance (R2) of the breathing air of the outer layer 13, for example, FIG. 2 (a), as shown in FIG. 5, the inner layer 12 and the outer layer 13 are made of non-woven fabric having the same roughness, and one outer layer 13 and the inner layer 12 have the same thickness as the outer layer 13 2 (a configuration in which the thickness of the inner layer 12 is twice the thickness of the outer layer 13), or as shown in FIGS. 2B and 6, the inner layer 12 and the outer layer 13 are disposed. And non-woven fabric of the same thickness, and the coarseness of the inner layer 12 may be made finer than the coarseness of the outer layer 13.

  1, 5 to 7, and 10, 2 is an ear hook member, and the ear hook member 2 is attached to both left and right end portions of the mask main body 1, and the mask main body 1 is hung on the wearer's ear. This is fixed to the nostril portion, formed of an elastic member such as rubber, and, for example, joined to the inner layer 12 by ultrasonic welding or the like.

  By the way, as shown in FIGS. 1 and 7, the mask body 1 is provided with a protrusion 1 a ′ protruding forward so that a ridge line 1 a is formed in the vertical direction at the center in the left-right direction when viewed from the front. A replaceable inner mask 3 is mounted on the inner layer 12 on the nostril side of the main body 1, and as shown in FIGS. 8A and 8B, the rear side (rear side) of the protruding portion 1 a ′. The engaging portion 3a of the inner mask 3 may be inserted into and engaged with the groove portion 1b formed in the above.

  The protrusion 1a ′ and the groove 1b of the mask body 1 and the engaging portion 3a of the inner mask 3 are, for example, a mask body sheet 1 ′ or an inner mask formed in a substantially rectangular shape as shown in FIG. V-shaped cuts k, k ′ are made in the vertical direction from both sides of the upper edge and the lower edge toward the central part at the center in the left-right direction of the sheet 3 ′ for use, and the opposing side t formed by this cut, It is formed by joining t and opposing sides t ′ and t ′ by ultrasonic welding or the like.

  10 and 11 are schematic views showing a state in which the sanitary mask A is attached to the nose mouth portion, the ridge line 1a of the mask body 1 is made to correspond to the nose mouth portion, and the ear hooking member 2 is attached to the wearer's ear. Hang and fix.

  Next, the effect of the sanitary mask A configured as described above will be described. The respiratory air passage resistance R1 of the inner layer 12 is larger than the respiratory air passage resistance R2 of the outer layer 13 (R1> R2). Therefore, when the wearer wears the sanitary mask A and breathes, the virus V taken in through the outer layer 13 during inhalation is long in the removal layer 11 because the passage resistance R1 of the inner layer 12 is large. During this stay, the virus V moves in the magnetic field m formed by the ferromagnetic ferrite fine particles 11b to generate an eddy current. The eddy current decomposes and removes the virus V. As compared with the case where the passage resistance is R1 = R2 or R1 <R2, the virus V can be more reliably removed as the residence time of the virus V in the removal layer 11 becomes longer.

  By the way, in the embodiment described above, an example in which the inner layer 12 is two and the outer layer 13 is one, and an example in which the roughness of the inner layer 12 is made finer than that of the outer layer 13 are described. However, the present invention is not limited to this, and the passage resistances R1 and R2 are adjusted by changing the roughness, thickness, number of sheets, fiber shape (fiber diameter, length, etc.), etc. of the inner layer 12 and the outer layer 13. May be.

  Moreover, in the Example mentioned above, although virus V was illustrated and demonstrated, even if it is other pathogens, such as bacteria, the same effect can be obtained.

A Sanitary mask V Virus 1 Mask body 11 Removal layer 12 Inner layer 13 Outer layer 3 Inner mask

Claims (3)

It has a mask body that covers the nostrils,
The mask body is
A ferromagnetic ferrite fine particle is dispersed and deposited on the fiber surface of the base fabric, and a removal layer for removing pathogens such as bacteria and viruses by the ferromagnetic ferrite fine particle;
An inner layer that is placed on the nose mouth side of this removal layer and allows breathing air to pass through,
An outer layer that is disposed on the opposite side of the removal layer from the inner layer and allows breathing air to pass through;
A sanitary mask characterized in that the passage resistance of the inner layer is greater than the passage resistance of the outer layer. The mask body is provided with a protruding part that protrudes forward so that a ridge line is formed in the vertical direction in the center part in the left-right direction in front view,
On the nose mouth side of the mask body, a replaceable inner mask is mounted on the inner layer,
The sanitary mask according to claim 1, wherein the inner mask includes an engaging portion that is inserted into and engaged with a groove formed on the back side of the protruding portion. It has a mask body that covers the nostrils,
The mask body is
A ferromagnetic ferrite fine particle is dispersed and deposited on the fiber surface of the base fabric, and a removal layer for removing pathogens such as bacteria and viruses by the ferromagnetic ferrite fine particle;
An inner layer that is placed on the nose mouth side of this removal layer and allows breathing air to pass through,
A pathogen removal method in a sanitary mask that is disposed on the opposite side of the removal layer from the inner layer and has an outer layer that allows breathing air to pass through,
The inner layer breathing resistance is greater than the outer layer breathing resistance,
A method for removing a pathogen in a sanitary mask, wherein the pathogen is retained in the removal layer.

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