JP2022015586A - Mask and mask production method - Google Patents

Abstract

To provide a mask capable of improving a property of tight contact to a face and a mask production method.SOLUTION: A mask 1 is worn so as to cover, at least a nose, a mouth and cheeks of a face 2. The mask comprises a mask body part 10 whose central part 11 protrudes along a vertical direction, and whose whole body is swollen from a rear surface side toward a front surface side. The mask body part 10 has a return part 30 which is formed integrally from a column of the nose 3a to both cheeks 5 so as to protrude from the front surface side toward the rear surface side. The return part 30 can contact a part from the column of the nose 3a to both cheeks 5 on the face 2, in a worn state. This configuration enhances a property of tight contact between the mask 1 and the face 2, and enables suppressing entry of dust and droplets into the mask from an upper side of the mask 1 and scattering of droplet to outside of the mask.SELECTED DRAWING: Figure 1

Description

The present invention relates to a mask and a method for manufacturing the mask.

Conventionally, masks for face wearing made of fibers, cotton, etc. are widely known. These masks change shape due to rapid breathing during exercise, and the mask may be deformed to the nasal side, especially when the user's breathing is accelerated, which may make the user feel uncomfortable. Further, the non-woven fabric mask is difficult to clean and has a problem that it cannot withstand repeated use.

In order to solve the above-mentioned problems, a mask made of a resin material such as rubber or silicon having a constant shape and having a three-dimensional shape bulging toward the front side according to the bulging of the face is provided (for example, Patent Document 1). The mask is said to have a plurality of ventilation holes, a nasal column support portion, an external nasal support member, and an air exhaust embossing. As a result, it is possible to prevent the mask from being deformed even if the breathing is accelerated, and to prevent fogging of the glasses and dew condensation inside the mask.

Japanese Unexamined Patent Publication No. 2019-90157

By the way, the mask of Patent Document 1 described above uses a resin material that does not easily lose its shape to prevent deformation of the mask due to respiration. Further, in the mask of Patent Document 1, the external nose support member is attached closer to the upper end side of the mask main body portion to reduce the gap between the face and the mask main body portion.

As described above, it is difficult for a mask made of a resin material to fit along the face as compared with a non-woven fabric mask, and it is particularly difficult to secure adhesion from the nasal column to the cheeks.

Therefore, an object of the present invention is to provide a mask and a method for manufacturing the mask, which can improve the adhesion to the face.

(1) The mask of the present invention provided to solve the above-mentioned problems is a mask worn so as to cover at least the nose, mouth and cheeks of the face, and the central portion protrudes in the vertical direction as a whole. Has a mask body portion that is formed to bulge from the back surface side to the front surface side, and the mask body portion is integrated from the nose column to both cheeks so as to protrude from the front surface side toward the back surface side. It is characterized in that the return portion is formed to be thinner than the thickness of the mask main body portion and can be in contact with the face extending from the nose column to both cheeks in the wearing state. It is something to do.

In the above-mentioned mask of the present invention, the mask main body is formed to bulge outward so as to be separated from the nose and mouth, and the upper end of the mask main body is folded back toward the back surface side. have. Further, since the return portion is formed from the nose column to both cheeks, the adhesion to the face is enhanced. Therefore, it is possible to provide a mask in which the nose and mouth do not come into contact with the mask main body and the breathing is not hindered, and the invasion of droplets and dust from the upper side of the mask is suppressed. Further, since the return portion can be integrally formed with the mask main body portion, the mask configuration can be simplified and the processing can be easily performed. Therefore, it is expected that the manufacturing cost will be reduced and the cleaning property of the mask will be improved.

In the above-mentioned mask of the present invention, the return portion is formed to be thinner than the thickness of the mask main body portion.

According to such a configuration, the contact between the return portion and the face can be made flexible, so that the adhesion between the mask and the face can be improved. Therefore, it is possible to prevent droplets and dust from entering the inside of the mask from the upper side and the lower side of the mask, and to prevent the droplets and the like emitted by the user of the mask from scattering to the outside of the mask. Further, it is possible to provide a mask that can withstand long-term wearing. Further, since the thickness of the mask main body is secured, it is possible to improve the adhesion of the return portion to the face while maintaining the strength of the mask.

The mask of the present invention provided to solve the above-mentioned problems is made of a material in which the mask main body and the return portion can maintain a constant shape including at least one of paper, cloth, metal, rubber, and resin. It is desirable that it is formed.

According to such a configuration, since the shape of the mask main body can be maintained, it is possible to suppress the deformation of the mask due to respiration. Further, by assuming that the material of the mask main body is made of a material that can maintain a certain shape, it is possible to withstand repeated use by washing. When the mask body is formed of paper or cloth, the surface or fibers may be coated with resin or the like. This makes it possible to provide a mask that can maintain a constant shape even when paper or cloth is used as a material.

In the mask of the present invention provided to solve the above-mentioned problems, it is desirable that the mask main body portion and the return portion are formed of a thermoplastic resin.

According to such a configuration, since the member to be molded can be molded in a state of being softened by heating, the mask main body can be easily molded. Thereby, for example, it is possible to form the mask main body portion by using a molding method such as vacuum forming. Further, since the mask after molding can be maintained in a constant shape, the strength of the mask can be ensured and the deformation of the mask due to respiration can be suppressed. In addition, cleaning the mask enables repeated use, and the mask can be used hygienically.

In the mask of the present invention provided to solve the above-mentioned problems, it is desirable that the string holding portions are formed on both side ends of the mask main body portion, and the string holding portions can hold the ear hook string.

According to such a configuration, since a separate means for attaching the mask to the face is not required, the mask can be easily attached to the face.

In the mask of the present invention provided to solve the above-mentioned problems, extension portions formed so as to extend toward the rear side of the mask main body portion are formed on both end sides of the mask main body portion, and the extension portion is formed. However, it is desirable that it can be attached to a protective cap.

According to such a configuration, even if a protective cap is worn, the mask can be worn on the face without interfering with the protective cap. The extension portion described above may be directly attached to, for example, the chin strap of the protective cap or the protective cap. Further, the protective cap described above may include various members such as a helmet and a hat worn near the face of the mask user, for example, the head.

In the mask of the present invention provided to solve the above-mentioned problems, it is desirable that the filter is held on the back surface side of the mask main body.

According to such a configuration, even when droplets, dust, etc. invade from the ventilation portion, it is possible to prevent the droplets, dust, etc. from reaching the face. In addition, it is possible to suppress the scattering of droplets and the like emitted by the mask user to the outside of the mask.

(2) The method for manufacturing a mask of the present invention provided to solve the above-mentioned problems is a method for manufacturing a resin mask that covers at least the nose and mouth of the face, and the center protrudes in the vertical direction as a whole. Using a mold that is bulged from the back surface side to the front surface side, the mold and the member to be molded face each other, and the member to be molded is deformed while being pressed against the mold to be deformed toward the back surface side. From the nasal column by forming a mask main body portion having an inclined inclined portion and cutting the inclined portion in the lateral direction intersecting the vertical direction of the mask main body portion inside the ridgeline of the outer shape of the inclined portion. It is characterized by forming a return portion that can come into contact with the face over both cheeks.

In the above-mentioned method for manufacturing a mask of the present invention, a mask main body portion having an inclined portion whose upper end side is inclined toward the back surface side is formed by pressing a member to be molded against a mold formed by bulging toward the outside and deforming the member. can. Here, various molding methods such as vacuum forming may be used to form the mask main body. Further, when vacuum forming is used, the member to be molded may be pressed against the mold by the differential pressure due to the vacuum. After the mask main body is formed, a folded portion can be formed on the rear side of the mask main body by cutting laterally inside the ridgeline of the outer shape on the upper end side of the inclined portion. That is, the return portion can be formed integrally with the mask main body portion. In addition, since the return portion is formed so as to cover the upper side of the mask, it is possible to prevent droplets and dust from entering from the upper side of the mask and the droplets emitted by the mask user from scattering to the outside of the mask. Masks can be easily manufactured.

Further, since the above-mentioned inclined portion is formed while being stretched to the rear side during molding, it is likely to be formed with a thickness thinner than that of the mask main body portion. Therefore, the contact between the return portion and the face can be made flexible, and it can be expected that the adhesion between the mask and the face is improved. This makes it possible to further suppress the intrusion of droplets, dust, etc. from the upper side of the mask. Further, it is possible to provide a mask that can withstand long-term wearing. Further, since the thickness of the mask main body is secured, it is possible to improve the adhesion of the return portion to the face while maintaining the strength of the mask.

According to the present invention, it is possible to provide a mask and a method for manufacturing the mask, which can improve the adhesion to the face.

It is an embodiment of the mask according to the present invention, and is a front view showing a state of being worn on the face. It is a right side view which shows one Embodiment of the mask which concerns on this invention. It is a top view which shows one Embodiment of the mask which concerns on this invention. It is a perspective view of the mask which concerns on this invention. (A) is an enlarged perspective view of the ventilation portion in FIG. 1, and (b) is an enlarged perspective view showing another embodiment of the ventilation portion. Another embodiment of the mask according to the present invention is a front view showing a state of being worn on the face. It is a side view which shows the embodiment when the filter is provided in the mask which concerns on this invention. It is a schematic explanatory drawing of the manufacturing method of the mask which concerns on this invention. (A) and (b) are schematic explanatory views of the mask manufacturing method which concerns on this invention. It is a side view which shows the state which the extension part is provided in the mask which concerns on this invention, and the extension part is attached to the protective cap.

An embodiment of the mask 1 of the present invention will be described in detail below with reference to FIGS. 1 to 4.

As shown in FIG. 1, the mask 1 is worn so as to cover at least the nose 3 and the mouth 4 of the face 2. The mask 1 has a mask main body portion 10 and at least one ventilation portion 20 formed on the mask main body portion 10.

The mask body 10 is made of a material that can maintain a constant shape, including, for example, at least one of paper, cloth, metal, rubber, and resin. In this embodiment, a resin in which a thermoplastic resin is used will be described as an example.

As shown in FIGS. 2 to 4, the mask main body 10 is formed so that the central portion 11 projects from the back surface side to the front surface side (also referred to as the front surface side) along the vertical direction. Here, the back surface side refers to the mounting surface side where the mask body 10 faces the face 2 when the mask 1 is mounted, and the front surface side refers to the mounting surface side where the mask body 10 faces the face 2 when the mask 1 is mounted. Refers to the non-mounting surface side that is the opposite side of the surface side. The mask main body 10 is formed to bulge so as to bulge from the back surface side to the front surface side as a whole. As a result, the mask body 10 has a space so as not to obstruct the breathing by the nose 3 and the mouth 4 in the worn state (see FIG. 1). The mask main body portion 10 may be separated from the nose 3 and the mouth 4 so as not to come into contact with each other at a portion other than the nose column 3a.

Further, as shown in FIG. 1, the mask main body portion 10 is formed with a string holding portion 12 for attaching the ear hook string 12a when worn on the face 2. The string holding portion 12 is formed as two openings on both ends of the mask main body portion 10. The ear hook string 12a may be formed of a string, rubber, or the like. The mask 1 can be attached to the face 2 by the ear strap 12a. As a result, since a separate means for attaching to the face 2 is not required, the mask 1 can be easily attached to the face 2. It should be noted that a length adjusting band (not shown) for extending the ear strap 12a can be provided as appropriate.

Further, the mask main body portion 10 is formed with a return portion 30 so as to project from the front surface side to the back surface side on the upper end side. The return portion 30 is integrally formed from the nose column 3a to the cheeks 5 on both sides. Therefore, the return portion 30 can come into contact with the face 2 extending from the nose column 3a to both cheeks 5 and 5 when the return portion 30 is attached to the face 2. As a result, the mask 1 is supported by the face 2 by the return portion 30. Although the details will be described later, the return portion 30 is formed by being stretched to the rear side of the mask main body portion 10 at the time of molding.

The ventilation portion 20 is formed so that the front surface side (also referred to as the outside) and the back surface side (also referred to as the inside) of the mask main body portion 10 communicate with each other. As a result, the breathing of the user wearing the mask 1 is ensured. In the present embodiment, as shown in FIG. 5A, the ventilation portions 20 have semicircular openings 21 and are formed side by side on both sides with the central portion 11 interposed therebetween. As the shape of the ventilation portion 20, various shapes such as a circle, an ellipse, a triangle, and a rectangle can be adopted.

The opening 21 of the ventilation portion 20 is formed so as to be able to ventilate in a direction deviating from the front-rear direction when attached to the face 2. Here, the front direction in the wearing state on the face 2 refers to the front side direction (non-wearing surface side direction) of the mask main body 10 in the wearing state of the mask 1, and the rear direction means the wearing state of the mask 1. In the back surface side direction (mounting surface side direction) of the mask main body portion. In the present embodiment, the opening 21 of the ventilation portion 20 is formed so as to open toward the side of the mask main body portion 10 (laterally outside in the present embodiment). Therefore, since the ventilation portion 20 is opened in a direction different from the front side of the mask 1, splashes and dust from the front side of the mask 1 are inside the mask while ensuring ventilation from the ventilation portion 20. Invasion can be suppressed. In addition, it is possible to prevent the droplets and the like emitted by the user of the mask 1 from scattering to the outside of the mask. Further, it is possible to prevent droplets and dust from entering the inside of the mask from the upper side and the lower side of the mask 1 and to prevent the droplets and the like emitted by the user of the mask 1 from scattering to the outside of the mask.

Next, another embodiment of the ventilation unit 20 will be described below with reference to FIGS. 5 (b) and 6. As shown in FIG. 6, in the ventilation portion 20, a slit-shaped opening 22 (also referred to as a slit 22) is formed in the vertical direction. In the present embodiment, two slits 22 are formed on both sides of the central portion 11 with the central portion 11 interposed therebetween. The number of slits 22 provided can be changed as appropriate. Further, various widths and shapes of the slit 22 can be adopted.

The slit 22 is formed so as to open a hole toward the side of the mask main body 10 (laterally outside in this embodiment). Therefore, since the ventilation portion 20 is opened in a direction different from the front side of the mask 1, splashes and dust from the front side of the mask are inside the mask 1 while ensuring ventilation from the ventilation portion 20. Invasion can be suppressed. In addition, it is possible to prevent the droplets and the like emitted by the user of the mask 1 from scattering to the outside of the mask. Further, it is possible to prevent droplets and dust from entering the inside of the mask 1 from the upper side and the lower side of the mask 1 and to prevent the droplets and the like emitted by the user of the mask 1 from scattering to the outside of the mask.

The mask 1 according to the present invention can be used alone as shown in FIGS. 1 to 4, but as shown in FIG. 7, the mask 1 is used by attaching the filter 40 to the back surface side of the mask main body 10. You can also do it. Hereinafter, embodiments in the case of mounting the filter 40 will be described.

In the present embodiment, the filter 40 is formed in a rectangular shape, and the left and right ends of the filter 40 are held by a pair of two slits 22 formed on both sides of the central portion 11 of the mask main body portion 10. ing. Specifically, one end side of the filter 40 is held by the slits 22 and 22 by alternately passing one end side of the filter 40 through the two slits 22 and 22. Similarly, the other end side of the filter 40 is also alternately passed through and held by two slits 22 and 22 formed on opposite sides of the central portion 11 of the mask main body portion 10. As a result, the filter 40 can be held in the pair of slits 22, so that it is not necessary to provide a separate holding means for holding the filter 40. Therefore, it is possible to form the mask 1 with a simple structure. In addition, improvement in workability of the mask main body 10 can be expected. The holding method of the filter 40 is not limited to the above, and various methods can be adopted. Further, as the ventilation portion 20, not only the slit 22 but also various shapes can be adopted.

As the filter 40, for example, one made of a non-woven fabric can be used. The filter 40 can be selected according to the intended use, for example, one that prevents the passage of viruses and bacteria, one that prevents droplets, dust, and pollen. The material of the filter 40 is not particularly limited, but various materials can be used depending on the intended use of the mask 1. The filter 40 may have at least one of a breathable resin material, paper, or a woven fabric in addition to the non-woven fabric.

By mounting the filter 40 on the back surface side of the mask main body 10, the filter 40 can be easily thrown away or replaced. In addition, the mask 1 can be used repeatedly and hygienically by throwing away or replacing the filter 40. Further, the performance of the filter 40 can be easily changed according to the application.

Next, the manufacturing method of the mask 1 will be described in detail below based on FIGS. 8, 9 (a) and 9 (b).

In this embodiment, a method of manufacturing the mask 1 by a vacuum forming method will be exemplified. As shown in FIG. 8, in manufacturing the mask 1, a male mold 50 is fixed on the machine base of a vacuum forming machine (not shown). The center of the mold 50 projects in the vertical direction, and the entire mold 50 is formed to bulge from the back surface side to the front surface side. Further, the mold 50 is assumed to have at least one protrusion 52, and in the present embodiment, a pair of protrusions 52, 52 are provided on both sides of the center of the mold 50.

The protrusion 52 is formed on the surface side of the nesting mold 51, which is different from the mold 50. The nested mold 51 is fitted as a nest to the mold 50. Details of the nested mold 51 will be described later.

Further, a rectangular plate-shaped member to be molded 53, which is larger than the mold 50, is arranged on the mold 50 in a state where the periphery is sealed so as to face the mold 50. The member to be molded 53 is made of a thermoplastic resin such as polypropylene (PP) or polyethylene terephthalate (PET). Subsequently, evacuation is performed from the mold 50 side while heating the member 53 to be molded by an appropriate heating means (not shown). As a result, the member to be molded 53 is pressed against the mold 50 by the differential pressure due to the vacuum, and is deformed along the mold 50. At this time, the protrusion 52 forms a convex portion 53a (see FIG. 9) at a position facing the protrusion 52 of the member to be molded 53. As a result, the member to be molded 53 is deformed into a shape along the mold 50 and the nesting mold 51 to form the mask main body portion 10. Subsequently, the vacuum state is released, and the mask main body 10 is removed from the mold 50.

Next, the formation of the ventilation portion 20 in the mask main body portion 10 will be described below with reference to FIGS. 9 (a) and 9 (b). The illustrated mask main body 10 is formed by processing the mask main body 10 removed from the mold 50 along the outer shape and forming the string holding portion 12. The formation of the return portion 30 on the upper end side will be described later.

A plurality of convex portions 53a are formed on both sides of the mask main body portion 10 with the central portion 11 interposed therebetween. The convex portion 53a projects in an elliptical shape toward the surface of the mask main body portion 10. The ventilation portion 20 is formed by opening a through hole from the side of the convex portion 53a toward the central portion 11. Further, the ventilation portion 20 (opening 21) is formed so that the front surface side and the back surface side of the mask main body portion 10 communicate with each other. As a result, the ventilation portion 20 facing sideways with respect to the mask main body portion 10 can be formed. Therefore, it is possible to easily manufacture the mask 1 capable of suppressing the invasion of droplets and dust from the front side (front surface side) into the inside of the mask and the scattering of the droplets and the like from the inside (back surface side) to the outside of the mask. ..

When the ventilation portion 20 is a slit 22, the nesting mold 51 may be replaced with one having a slit-shaped protrusion 52. As described above, by using the mold 50 as a nested structure and attaching the nested mold 51 to the mold 50 in a replaceable manner, the shape of the ventilation portion 20 can be easily changed by simply replacing the nested mold 51. be able to. Further, when the nesting structure of the mold 50 described above is adopted, it is preferable to prepare a plurality of nesting molds 51 having different shapes. As a result, the ventilation portions 20 having various shapes can be easily formed only by exchanging the nesting mold 51.

Further, by forming the member to be molded 53 with a thermoplastic resin, the member to be molded 53 can be molded in a state of being softened by heating, and can be cured after cooling. Thereby, the mask main body portion 10 can be easily molded. Further, for example, it is possible to form the mask main body portion 10 by using a molding method such as vacuum forming. Further, since the mask 1 after molding can be maintained in a constant shape, the strength of the mask 1 can be ensured, and the deformation of the mask 1 due to respiration can be suppressed. Further, by cleaning the mask 1, repeated use becomes possible, and the mask 1 can be used hygienically.

Next, a method of forming the return portion 30 will be described below with reference to FIGS. 9 (a) and 9 (b). The mask main body portion 10 removed from the mold 50 (see FIG. 8) is formed with an inclined portion 13 whose upper end side is inclined toward the back surface side along the upper end side of the mold 50.

The inclined portion 13 is integrally molded with the mask main body portion 10 so that the member to be molded 53 is stretched from the front surface side to the back surface side. The inclined portion 13 is cut in the lateral direction intersecting the vertical direction of the mask main body portion 10 inside the ridge line 13a of the outer shape (two-dot chain line in the figure). As a result, a return portion 30 that can come into contact with the face 2 is formed from the nose column 3a to both cheeks 5.

As described above, since the inclined portion 13 is formed by being stretched, the thickness of the inclined portion 13 is likely to be thinner than that of the mask main body portion 10. Therefore, the contact between the return portion 30 and the face 2 can be made flexible, and it can be expected that the adhesion between the mask 1 and the face 2 is improved. As a result, the upper side of the mask 1 is covered with the return portion 30, so that the invasion of droplets, dust, etc. from the upper side of the mask can be further suppressed. Further, it is possible to provide a mask 1 that can withstand wearing for a long time. Further, since the mask main body portion 10 has a sufficient thickness, it is possible to improve the adhesion of the return portion 30 to the face 2 while maintaining the strength of the mask 1. The return portion 30 may be formed to be thinner than the thickness of the mask main body portion 10 by other means such as cutting out as appropriate, as well as by stretching.

Further, as described above, the inclined portion 13 is integrally molded with the mask main body portion 10. As a result, the configuration of the mask 1 can be simplified, and a reduction in manufacturing cost can be expected. In addition, the mask 1 can be easily washed.

Next, yet another embodiment of the mask 1 will be described below with reference to FIG. In the present embodiment, extension portions 14 are formed at both ends of the mask main body portion 10. The extension portion 14 is formed so as to extend toward the rear side of the mask main body portion 10. For example, two holes are formed in the extension portion 14 along the vertical direction on the rear end side, and are attached to the chin string 71 of the protective cap 70 with an appropriate string or rubber, and the mask 1 is attached to the protective cap 70. Ru. Therefore, even if a protective cap 70 such as a helmet or a hat is worn, the mask 1 can be worn without interfering with the protective cap 70.

The extension portion 14 may be directly attached to the chin strap 71. Further, the extension portion 14 may be directly attached to a portion other than the chin strap 71, for example, the protective cap 70. The protective cap 70 includes, for example, a helmet, a hat, and various members worn near the head and face 2.

The above is the embodiment of the mask 1 of the present invention, but the present invention is not limited to the above-described embodiment, and appropriate modifications can be made within the scope of the invention.

In the present embodiment, the mask main body portion 10 in which the central portion 11 protrudes in the vertical direction and the whole is formed to bulge from the back surface side to the front surface side is illustrated, but the mask main body portion 10 has the central portion 11. It may not be. Further, the shape of the mask main body 10 is not limited to the embodiment, and various shapes can be adopted. Further, the shape of the ventilation portion 20 can be various shapes, and the opening direction can be formed in various directions as long as it is not formed toward the surface side of the mask main body portion 10. .. In this case, it is desirable that the opening direction of the ventilation portion 20 is a direction away from the upper side. As a result, it is possible to prevent droplets and dust from entering the inside of the mask from the upper side and the lower side, and to prevent the droplets and the like emitted by the user of the mask 1 from scattering to the outside of the mask.

Further, when the filter 40 is provided on the back surface side of the mask main body 10, various filters can be used depending on the intended use of the mask 1. Various types can be selected according to the mesh diameter of the filter 40 and the diameter of the droplets, dust, etc. that the material also receives. It is also possible to provide the filter 40 on the front surface side of the mask main body 10 instead of the back surface side, or to provide the filter 40 on both sides of the mask main body 10. It is also possible that the filter 40 is not provided.

In the present embodiment, the return portion 30 is integrally formed from the nose column 3a to both cheeks 5 so as to project from the front surface side to the back surface side of the mask main body portion 10, but the return portion 30 is formed. The protruding direction can be various as long as it is possible to contact the face 2 from the nose column 3a to both cheeks 5 in the wearing state. Further, the contact between the return portion 30 and the face 2 does not have to be completely in close contact with the face 2 from the nose column 3a to both cheeks 5. In the above case, it is desirable to make the gap between the return portion 30 and the face 2 as small as possible.

In the present embodiment, the return portion 30 is formed thinner than the thickness of the mask main body 10, but the return portion 30 has the same thickness as the mask main body 10 or the thickness of the mask main body 10. It may be thicker than that. In the above case, it is desirable that the return portion 30 is formed so as to be in contact with the face 2 from the nose column 3a to both cheeks 5 with a flexible touch.

In the present embodiment, the filter 40 is held in a pair of slits 22 formed on both sides of the mask main body 10 with the central portion 11 interposed therebetween, but the holding form of the filter 40 is limited to this. It is not a thing, but various forms can be adopted. The ventilation portion 20 may be an opening 21 instead of the slit 22, or the mask main body portion 10 may be provided with a separate holding portion. Further, the filter 40 may be simply interposed on the back surface side of the mask main body 10, or the filter 40 and the back surface side of the mask main body 10 may be attached by double-sided tape or the like.

In the present embodiment, the filter 40 has at least one of a non-woven fabric, a breathable resin material, paper or a woven fabric, but the material of the filter 40 is not limited to these, and various materials can be used. Things can be used.

In the present embodiment, the string holding portion 12 has two through holes, but the shape and the number of the string holding portions 12 can be appropriately changed. Further, the ear hook string 12a may be directly attached to the string holding portion 12. Further, as the ear hook string 12a, various materials can be used, and for example, a string made of a cloth string, a paper string, a rubber string, or the like can be used.

In the present embodiment, the mask 1 in which the extension portion 14 is formed on both end sides of the mask main body portion 10 so as to extend toward the rear side of the mask main body portion 10 is exemplified, but the shape of the extension portion 14 is various. Shaped ones can be adopted. Further, the extension portion 14 may be directly attached to the protective cap 70 as well as the one attached to the chin strap 71 of the protective cap 70. The protective cap 70 can be attached not only to the helmet and the hat but also to various members worn near the user's head and face 2.

In the present embodiment, the mask main body 10 is made of a material that can maintain a constant shape including at least one of paper, cloth, metal, rubber, and resin, but the mask main body 10 is constant. Various materials can be used as long as the shape of the above can be maintained. When the mask main body 10 is formed by vacuum forming or extrusion molding, it is desirable that the mask body 10 is made of a thermoplastic resin. As the thermoplastic resin, polypropylene or polyethylene terephthalate can be preferably used, but various materials other than these can be used.

In this embodiment, the method of manufacturing the mask 1 by vacuum forming is exemplified, but various molding methods can be used. Further, the mold 50 to be used is not limited to a nested structure, but an integrally formed mold can also be used. Further, various shapes and materials of the mold 50 can be used, and various shapes of the protrusion 52 can be used according to the shape of the ventilation portion 20. As the mold 50, not only the one used as a male mold but also the one used as a female mold can be used.

In the present embodiment, the return portion 30 is formed by cutting the inclined portion 13 in the lateral direction intersecting the vertical direction of the mask main body portion 10 inside the ridge line 13a of the outer shape of the inclined portion 13. The cutting direction of the inclined portion 13 can be various as long as it can come into contact with the face 2 from the nose column 3a to both cheeks 5. If the ridge line 13a can be formed so as to be able to appropriately contact the face 2 from the nose column 3a to both cheeks 5, the inclined portion 13 may not be cut. The above are various embodiments and modifications of the mask 1 of the present invention.

It should be noted that the present invention is not limited to those exemplified in the above-described embodiments and modifications, and it is possible to those skilled in the art that there may be other embodiments from the teaching and spirit within the scope of the claims. It will be easy to understand.

The mask of the present invention can be used for protection against droplets, dust, pollen, dust and the like, and for suppressing the diffusion of droplets and the like from a person who uses the mask.

1: Mask 2: Face 3: Nose 4: Mouth 5: Cheek 10: Mask body 11: Central part 12: String holding part 12a: Ear strap 13: Inclined part 13a: Ridge line 14: Extension part 20: Ventilation part 21 : Opening 22: Opening (slit)
30: Return part 40: Filter 50: Mold 51: Nesting mold 52: Protrusion part 53: Molded member 53a: Convex part 70: Protective cap 71: Chin cord

Claims (2)

A mask worn to cover at least the nose, mouth and cheeks of the face.
It has a mask body part in which the central part protrudes along the vertical direction and the whole is bulged from the back surface side to the front surface side.
The mask body is
It has a barb that is integrally formed from the nasal column to both cheeks so as to project from the front surface side to the back surface side.
A mask characterized in that the return portion is formed thinner than the thickness of the mask main body portion and can be in contact with the face extending from the nose column to both cheeks in a worn state. A method of manufacturing a resin mask that covers at least the nose and mouth of the face.
Using a mold in which the center protrudes along the vertical direction and the whole is bulged from the back surface side to the front surface side.
The mold and the member to be molded face each other,
By deforming the member to be molded while pressing it against the mold, a mask main body portion having an inclined portion inclined toward the back surface side is formed.
By cutting the inclined portion in the lateral direction intersecting the vertical direction of the mask main body inside the ridgeline of the outer shape of the inclined portion, a return portion that can contact the face from the nose column to both cheeks is formed. A method for manufacturing a mask, which comprises forming.

Images