Hygienic mask

Abstract

To provide a hygienic mask which is always easy to carry and comfortable to wear.SOLUTION: A hygienic mask 1b includes: a mask body 2; a filter storage part 3b for fixing the periphery to the inner side of the mask body 2; and a filter 4 stored in the filter storage part 3b. A first cut in a right-left direction is made at an upper part of the filter storage part 3b, an upper side of the first cut is configured to make hard for air to pass through compared to the mask body 2. an upper lower end 331a of the first cut is folded upward and is hooked on a nasal bridge of a user 6 so that it can be used. A second cut in the right-left direction is made at a lower part of the filter storage part 3b, a lower side of the second cut is configured to make hard for air to pass through compared to the mask body 2, a lower upper end 331c of the second cut is folded downward, is hooked near the chin of the user 6 so that it can be used.SELECTED DRAWING: Figure 13

Description

[Technical field]

[0001] The present invention relates to a sanitary mask. [Background technology]

[0002] Recently, due to the spread of the new coronavirus and air pollution caused by PM2.5, wearing sanitary masks when going out is becoming the norm. Therefore, instead of conventional cloth masks and paper masks, sponge masks that are easy to mass-produce have started to attract attention. However, since all masks cover part of the face, the breath from the mouth and nose tends to escape upwards, that is, toward the eyes. Therefore, when wearing glasses in winter, the breath that passes between the mask and the face tends to fog up the glasses.

[0003] Therefore, a mask was developed which is made of porous foamed polyurethane and which includes a main body portion which covers at least the mouth and nostrils of the face, a hanging portion which is seamlessly connected to the main body portion from both ends and extends towards the ear side of the face and has an opening which can be hung over the ear, and a protruding portion which is seamlessly connected to the main body portion and protrudes towards the eye side of the face, can be folded back towards the face side of the main body portion, and comes into contact with the face due to its own elasticity (see Patent Document 1).

[0004] In this mask, the protruding portion, which is a portion protruding from the main body portion that is folded back, fills the gap formed between the main body portion and the face. The protruding portion is formed of porous polyurethane foam, and therefore has appropriate elasticity. Therefore, by folding the protruding portion back toward the face side, it comes into contact with the face while being pressed against it by its own elasticity. The protruding portion is also formed of porous polyurethane foam, and therefore has flexibility. Therefore, by folding the protruding portion back toward the face side, the shape of the protruding portion flexibly changes to match the shape of the face. Furthermore, since not only the protruding portion but also the main body portion is formed of porous polyurethane foam, the mask has high breathability compared to conventional masks formed of nonwoven fabric, and the flow rate of exhaled air to the upper side is inherently small. As a result, the passage of exhaled air to the upper side of the main body portion is greatly reduced by providing the protruding portion and the properties of the polyurethane foam. Therefore, it is described that the gap can be filled along the shape of the face, the passage of exhaled air can be reduced, and fogging of glasses can be suppressed. Summary of the Invention [Problem to be solved by the invention]

[0005] In the above mask, not only the protruding parts but also the main body are made of porous polyurethane foam, so it has high breathability compared to conventional masks made of nonwoven fabric, and the flow rate of exhaled air to the upper side is inherently small. As a result, the passage of exhaled air to the upper side of the main body is greatly reduced by the provision of the protruding parts and the properties of the polyurethane foam, so it is presumed that the overall sterilization effect and PM2.5 removal effect are small. However, if a filter with sterilization effect and PM2.5 removal effect is interposed in the main body, it is presumed that the passage of exhaled air from the protruding parts to the upper side of the main body will be increased, and the effect of preventing fogging of glasses will be reduced.

[0006] The present invention has been made in consideration of the above circumstances, and its object is to provide a sanitary mask that has the effect of suppressing fogging of glasses while maintaining an overall sterilization effect and PM2.5 removal effect. [Means for solving the problem]

[0007] The present invention relates to a hygienic mask comprising a mask body, a filter accommodating section whose periphery is fixed inside the mask body, and a filter accommodated in the filter accommodating section, a first slit being made in the left-right direction at the top of the filter accommodating section, the upper side of the first slit being given a first structure which is less permeable to air than the mask body, and which can be used by hanging the mask over a user's nose with the upper side of the first slit folded upward.

[0008] According to the present invention, the mask comprises a mask body, a filter housing section whose periphery is fixed inside the mask body, and a filter housed in the filter housing section, and a first slit is made in the left-right direction at the top of the filter housing section, and the upper side of the first slit has a first structure that is less permeable to air than the mask body. The upper side of the first slit can be folded upward and hooked onto the user's nose for use, thereby ensuring an airtight seal during use and preventing fogging of glasses while maintaining the overall sterilization effect and PM2.5 removal effect.

[0009] In addition, in winter, when glasses tend to fog up, the upper side of the first slit of the filter housing part can be folded upward to prevent glasses from fogging up, while in summer, when glasses are less likely to fog up and when wearing a mask or when not wearing glasses at all, the upper side of the filter housing part can be used without folding upward. As a result, a hygienic mask that is easy for anyone to carry and comfortable to wear at any time can be obtained.

[0010] As in the invention described in claim 2, the first cut line is preferably recessed downward.

[0011] According to the invention described in claim 2, the first slit has a downwardly recessed shape, so that the upper side of the first slit can be folded back upward by a large amount, making it easier to hook the upper side onto the user's nose.

[0012] As in the invention described in claim 3, it is preferable that the first structure is such that the upper side of the first slit is made of a closed cell foam or a continuous cell foam covered with a nonwoven fabric, and the mask body is made of a continuous cell foam.

[0013] According to the invention described in claim 3, the first structure is such that the upper side of the first slit is made of a closed cell foam or a continuous cell foam covered with a nonwoven fabric, and the mask body is made of a continuous cell foam. Therefore, the upper side of the first slit can be made more impermeable to air than the mask body.

[0014] However, when a user talks while wearing a mask, the mask may slide up due to the movement of the jaw, and in order to prevent this, masks are becoming larger. Such large masks are difficult to wear for long periods of time, especially in summer. Therefore, as in the invention described in claim 4, it is preferable to make a second slit in the left-right direction in the lower part of the filter housing part, and make the lower side of the second slit a second structure that is less permeable to air than the mask body, and to hook the lower side of the second slit downward and use it by hanging it around the user's chin.

[0015] According to the invention described in claim 4, a second slit is made in the left-right direction at the bottom of the filter housing, and the lower side of the second slit is made to have a second structure that is less permeable to air than the mask body, and the lower side of the second slit can be folded downward and hooked around the user's chin for use, so that the mask is less likely to slip up even when the user talks while wearing it. As a result, the mask can be worn for long periods of time even in summer without becoming too large.

[0016] As in the invention described in claim 5, the second cut line preferably has an upwardly protruding shape.

[0017] According to the invention described in claim 5, the second slit has an upwardly protruding shape, so that the lower side of the second slit can be folded downward a large amount, making it easier to hook the lower side around the user's chin.

[0018] As in the invention described in claim 6, it is preferable that the second structure is configured such that the lower side of the second slit is made of a closed cell foam, or a continuous cell foam covered with a nonwoven fabric.

[0019] According to the invention described in claim 6, the second structure is such that the lower side of the second slit is made of a closed cell foam or a continuous cell foam covered with a nonwoven fabric, so that the lower side of the second slit can be made to have a structure that is less permeable to air than the mask body.

[0020] Instead of the second slit, a simpler structure can be used. That is, as in the invention described in claim 7, it is preferable to provide an extension part that extends further downward from the lower part of the filter accommodating part, and to make it possible to use the mask by hooking the lower part of the extension part around the user's chin.

[0021] According to the invention described in claim 7, an extension part is provided that extends further downward from the lower part of the filter housing part, and the lower part of the extension part can be hooked around the user's chin when used, so the mask is less likely to slip up even when the user talks while wearing it. As a result, the mask can be worn for long periods of time even in summer without becoming too large.

[0022] As in an eighth aspect of the invention, it is preferable that the inside of the extension portion is covered with a nonwoven fabric.

[0023] According to the invention described in claim 8, since the inside of the extension portion is covered with a nonwoven fabric, the mask is further prevented from slipping up even when the user talks while wearing the mask.

[0024] As in the invention described in claim 9, the filter is preferably made of nonwoven fabric.

[0025] According to the invention described in claim 9, the filter is made of nonwoven fabric, so that the sterilization effect and PM2.5 removal effect are significantly improved.

[0026] As in the invention described in claim 10, it is preferable that a wire is attached near the upper end of the filter accommodating portion.

[0027] According to the invention as recited in claim 10, a wire is attached near the upper end of the filter housing portion, so that the sealing performance during use is significantly improved.

[0028] As in an eleventh aspect of the invention, it is preferable that the vicinity of the center of the mask body is formed so as to bulge outward.

[0029] According to the invention described in claim 11, the central portion of the mask body is formed to bulge outward, so that the mask body does not block the mouth and nostrils of the user, making it easier to breathe.

[0030] As in the invention described in claim 12, it is preferable that a thermochromic material is mixed into the mask body.

[0031] According to the invention described in claim 12, since a thermochromic material is mixed into the mask body, it is convenient to check the user's body temperature. Effect of the Invention

[0032] According to the present invention, the mask comprises a mask body, a filter housing section whose periphery is fixed inside the mask body, and a filter housed in the filter housing section, and a first slit is made in the left-right direction at the top of the filter housing section, and the upper side of the first slit has a first structure that is less permeable to air than the mask body. The upper side of the first slit can be folded upward and hooked onto the user's nose for use, thereby ensuring an airtight seal during use and preventing fogging of glasses while maintaining the overall sterilization effect and PM2.5 removal effect.

[0033] In addition, in winter, when glasses tend to fog up, the upper side of the first slit of the filter housing part can be folded upward to prevent glasses from fogging up, while in summer, when glasses are less likely to fog up, or when glasses are not worn at all, the upper side of the filter housing part can be used without folding upward. As a result, a hygienic mask that is easy for anyone to carry and comfortable to wear at any time can be obtained. [Brief description of the drawings]

[0034] [Figure 1] FIG. 1 is a perspective view showing a state in which a sanitary mask according to a first embodiment of the present invention is used. [Diagram 2] 1A to 1D are schematic diagrams of a sanitary mask according to the first embodiment, in which (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. [Diagram 3] 1 is a flowchart showing a manufacturing procedure of the sanitary mask according to the first embodiment. [Figure 4] FIG. 2 is an explanatory diagram showing the state in which each material of the sanitary mask according to the first embodiment has been cut. [Diagram 5] FIG. 2 is an explanatory diagram showing a procedure for setting the sanitary mask according to the first embodiment. [Figure 6] 1A to 1D are explanatory diagrams showing the state in which the setting of the sanitary mask according to the first embodiment has been completed, where (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. [Figure 7] FIG. 11 is a perspective view showing a state in which a sanitary mask according to a second embodiment of the present invention is used. [Figure 8] 1A to 1D are schematic diagrams of a sanitary mask according to a second embodiment of the present invention, in which (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. [Figure 9] 1 is a flowchart showing a manufacturing procedure of the sanitary mask according to the second and third embodiments. [Figure 10] FIG. 11 is an explanatory diagram showing the state in which each material of the sanitary mask according to the second embodiment has been cut. [Figure 11]FIG. 11 is an explanatory diagram showing a procedure for setting up the sanitary mask according to the second embodiment. [Figure 12] 11 is an explanatory diagram showing the state in which the setting of the sanitary mask according to the second embodiment has been completed, where (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. [Figure 13] FIG. 11 is a perspective view showing a state in which a sanitary mask according to a third embodiment of the present invention is used. [Figure 14] 11A to 11D are schematic diagrams of a sanitary mask according to a third embodiment, in which (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. [Figure 15] FIG. 11 is an explanatory diagram showing the state in which each material of the sanitary mask according to the third embodiment has been cut. [Figure 16] FIG. 11 is an explanatory diagram showing a procedure for setting up a sanitary mask according to the third embodiment. [Figure 17] 11 is an explanatory diagram showing the state in which the setting of the sanitary mask according to the third embodiment has been completed, where (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] (Embodiment 1) Fig. 1 is a perspective view showing a state in which the sanitary mask 1 according to the first embodiment of the present invention is used, and Fig. 2 is a schematic diagram of the sanitary mask 1 according to the first embodiment, where (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. Note that the bottom view is vertically symmetrical with the plan view, and the right side view is horizontally symmetrical with the left side view.

[0036] As shown in Fig. 1 and Fig. 2(a)-(d), the sanitary mask 1 according to the present embodiment 1 is made almost entirely of sponge and includes a mask body 2, a filter housing part 3 whose periphery is fixed inside the mask body 2, and a filter 4 housed in the filter housing part 3. The filter housing part 3 is divided into upper and lower parts by a linear dividing part (corresponding to a first cut) 33 extending horizontally, and the lower end 331 of the upper side 31 of the filter housing part 3 is folded upward and hooked on the bridge of the nose of a user 6 for use (such a state of use is shown by a two-dot chain line in Fig. 2(a)-(d)). Here, the reference numeral 5 denotes an adhesive cloth. The sponge is, for example, a urethane sponge, which is available in a continuous foam type in which the air bubbles are connected and thus moisture and air can pass through easily, and a closed foam type in which the air bubbles are not connected and thus moisture and air cannot pass through easily, and the air in the air bubbles cannot easily escape.

[0037] The mask body 2 is made of an open cell foam and is large enough to cover at least the mouth and nostrils of the face of the user 6 when worn, and is provided with a pair of ear hooks 21, 22 that extend integrally from both the left and right ends of the mask body 2 toward the ears of the face and are hung around the ears. The center of the mask body 2 bulges outward.

[0038] The filter accommodating section 3 is large enough to accommodate the filter 4 as a whole, and its upper side 31 and lower side 32 are in the shape of pockets facing in opposite directions, with the dividing section 33 as the boundary. The upper side 31 of the filter accommodating section 3 is made of a closed foam, and the lower side 32 of the filter accommodating section 3 is made of an open foam similar to the filter body 2. This allows the upper side 31 of the dividing section 33 of the filter accommodating section 3 to have a structure that is less permeable to air than the lower side 32 of the filter accommodating section 3 and the filter body 2. Here, the division ratio of the upper side 31 and the lower side 32 of the filter accommodating section 3 is approximately 1:3 in the height direction so that the user's nostrils do not cover the upper side 31 even if the lower end 331 of the upper side 31 is not folded back upward.

[0039] The filter 4 has a thick antiviral nonwoven fabric on the front side and a thin nonwoven fabric on the back side that is soft to the touch and non-slip. When the filter 4 is stored in the filter storage section 3, it is stored with the front side facing the mask body 2 and the back side facing the filter storage section 3.

[0040] The adhesive cloth 5 is a core material of a thin nonwoven fabric such as Japanese paper with adhesive on both sides. Here, it is a relatively large piece of cloth 51 that is attached to and fixes the inner surface around the filter accommodating section 3 and the outer surface of the filter 4 to the inner surface of the mask body 2, and a relatively small piece of cloth 52 that is attached to and fixes the outer surface of the lower side 32 of the filter accommodating section 3 to the inner surface of the filter 4.

[0041] FIG. 3 is a flow chart showing the manufacturing procedure of the sanitary mask 1 according to the present embodiment 1, FIG. 4 is an explanatory diagram showing the state in which each material of the sanitary mask 1 according to the present embodiment 1 is cut, FIG. 5 is an explanatory diagram showing the procedure for setting the sanitary mask 1 according to the present embodiment 1, and FIG. 6 is an explanatory diagram showing the state in which the setting of the sanitary mask 1 according to the present embodiment 1 is completed, where (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. Note that the shading in FIG. 5 is added for convenience of explanation. Also, the bottom view in FIG. 6 is vertically symmetrical with the plan view, and the right side view is horizontally symmetrical with the left side view. Below, the manufacturing procedure of the sanitary mask 1 according to the present embodiment 1 will be outlined with reference to FIG. 3 to FIG. 6(a) to (d). It is assumed that sheets of each material of the sanitary mask 1 are prepared in advance.

[0042] In step S1 of FIG. 3, the material sheets of the mask body 2, the filter accommodating section 3, the filter 4, and the adhesive cloth 5 are cut with a Thomson blade. Of the shapes of the cut materials, the mask body 2 has a specific rounded shape as a whole, as if the left and right sides of an ellipse were folded upward and the center was bulged, as shown in FIG. 4(a), and large diameter holes that become ear hooks are formed on the left and right. The filter accommodating section 3 is divided into a mountain-shaped upper side 31 and a square-shaped lower side 32 as shown in FIG. 4(b), but when the upper and lower sides 31, 32 are combined, the whole is a drum-like shape that bulges upward. The filter 4 is a drum-like shape that is slightly smaller than the filter accommodating section 3, as shown in FIG. 4(c).

[0043] As shown in FIG. 4( d ), the adhesive cloth 5 is made up of a cloth piece 51 having the same shape as the entire filter accommodating portion 3 , and a cloth piece 52 having the same shape as the lower side 32 of the filter accommodating portion 3 .

[0044] In step S2 in Fig. 3, each cut material is set in its respective predetermined position. That is, as shown in Fig. 5(a) and (b), a cloth piece 51 of the adhesive cloth 5 is set near the center of the mask body 2, and the filter 4 is set on top of it. Then, as shown in Fig. 5(c) and (d), the upper side 31 of the filter accommodating section 3 is set directly on the upper side of the filter 4, while the lower side 32 of the filter accommodating section 3 is set on the lower side of the filter 4 via a cloth piece 52 of the adhesive cloth 5.

[0045] In step S3 in Fig. 3, the set materials are bonded together with a flat plate (press machine). The temperature and time at this time are preset. The bonded materials are compressed into a flat plate, as shown in Figs. 6(a) to (d).

[0046] In step S4 in Fig. 3, the bonded materials are molded into a three-dimensional shape with a slight bulge near the center of the mask body 2, which is called mask molding. The temperature and time at this time are also set in advance. Each material that has been molded into a mask becomes a product as shown in Figs. 2(a) to (d).

[0047] In steps S5 to S7 in Fig. 3, the appearance (dirt, foreign matter, etc.) of the mask molded product and shape abnormalities are inspected, and only those that pass the inspection are bagged. The bagged products are then packaged and shipped. Then, as shown in Fig. 1, for example, in winter, a user 6 wearing glasses hooks the left and right ear hooks 21, 22 of the mask body 2 of the sanitary mask 1 on both ears, and wears the mask so that the mouth and nostrils of the face are aligned with the outwardly bulging portion near the center of the mask body 2. This allows the mouth and nostrils to be unobstructed by the mask body 2, making it easier to breathe.

[0048] Also, the lower end 331 of the upper side 31 of the filter housing part 3 inside the mask body 2 is folded upward and hooked on the bridge of the nose of the user 6. Then, the upper side 31 of the filter housing part 3 inside the mask body 2 blocks the passage of exhaled air. This prevents glasses from fogging up. Furthermore, the entire lower side 32 of the filter housing part 3 inside the mask body 2 and the part of the upper side 31 that is turned up by the folding back, as shown in FIG. 2(d), allow exhaled air to pass through the filter 4. This significantly improves the sterilization effect and the PM2.5 removal effect.

[0049] As described above, the sanitary mask 1 according to the present embodiment 1 comprises the mask body 2, the filter accommodating section 3 whose periphery is fixed to the inside of the mask body 2, and the filter 4 accommodated in the filter accommodating section 3, the filter accommodating section 3 being divided into upper and lower sections, the mask body 2 and the lower side 32 of the filter accommodating section 3 being made of continuous foam, and the upper side 31 of the filter accommodating section 3 being made of closed foam, and the lower end 331 of the upper side 31 of the filter accommodating section 3 being folded upwards so that it can be used by hooking it onto the bridge of the nose of the user 6, thereby achieving the effect of suppressing fogging of glasses while maintaining the overall sterilization effect and PM2.5 removal effect.

[0050] In addition, in winter, when glasses are prone to fogging, the lower end 331 of the upper side 31 of the filter accommodating part 3 is folded upward to prevent glasses from fogging up, whereas in summer, when glasses are less likely to fogging up and when wearing a mask or when not wearing glasses at all, the lower end 331 of the upper side 31 of the filter accommodating part 3 can be used without folding upward. As a result, it is easy for anyone to carry and comfortable to wear at any time.

[0051] (Embodiment 2) Incidentally, by making the filter housing part 3 of the above-mentioned embodiment 1 into an integral structure except for the dividing part 33, the manufacturing process of the present invention can be shortened. Fig. 7 is a perspective view showing a state in which a sanitary mask 1a according to embodiment 2 of the present invention is used, and Fig. 8 is a schematic diagram of the sanitary mask 1a according to embodiment 2 of the present invention, in which (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. Note that the bottom view is vertically symmetrical with the plan view, and the right side view is horizontally symmetrical with the left side view.

[0052] As shown in Fig. 7 and Fig. 8(a)-(d), the sanitary mask 1a according to the second embodiment is made almost entirely of sponge, and includes a mask body 2, a filter accommodating section 3a whose periphery is fixed inside the mask body 2, and a filter 4 accommodated in the filter accommodating section 3a. The filter accommodating section 3a has a U-shaped (corresponding to a downwardly concave) slit (corresponding to a first slit) 33a that opens gradually in the left-right direction, and the filter accommodating section 3a is used by folding the lower end 331a of the upper side 31a of the slit 33a of the filter accommodating section 3a upward and hooking it on the bridge of the nose of the user 6 (such a state of use is shown by a two-dot chain line in Fig. 8(a)-(d)). The reason why the slit 33a is made U-shaped is that, compared to the linear dividing section 33 of the first embodiment, the lower end 331a of the upper side 31a of the slit 33a of the filter accommodating section 3a is folded upward by a larger amount, making it easier to hook it on the user's nose. Here, reference numeral 5 denotes an adhesive cloth, reference numeral 33b denotes a small circular cutout expansion prevention portion, reference numeral 7 denotes a wire, and reference numeral 8 denotes a piece of nonwoven cloth. In the following, elements similar to those in the above-mentioned embodiment 1 are given the same reference numerals, and repeated explanations will be omitted as much as possible.

[0053] The filter accommodating section 3a is large enough to accommodate the filter 4 in its entirety, and its upper side 31a and remaining part 32a are integrally formed except for a slit 33a. The upper side 31a of the filter accommodating section 3a is formed by covering an open foam body with a piece of nonwoven fabric 8. For example, the piece of nonwoven fabric 8 is the same as that used for the back surface of the filter 4. For example, a single wire having a flat cross section is used as the wire 7.

[0054] FIG. 9 is a flow chart showing the manufacturing procedure of the sanitary mask 1a according to the second embodiment, FIG. 10 is an explanatory diagram showing the state in which each material of the sanitary mask 1a according to the second embodiment is cut, FIG. 11 is an explanatory diagram showing the procedure for setting the sanitary mask 1a according to the second embodiment, and FIG. 12 is an explanatory diagram showing the state in which the setting of the sanitary mask 1a according to the second embodiment is completed, where (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. Note that the shading in FIG. 11 is added for convenience of explanation. Also, the bottom view in FIG. 12 is vertically symmetrical with the plan view, and the right side view is horizontally symmetrical with the left side view. Below, the manufacturing procedure of the sanitary mask 1a according to the second embodiment will be outlined with reference to FIG. 9 to FIG. 12(a) to (d). It is assumed that sheets of each material of the sanitary mask 1a and the wire 7 are prepared in advance.

[0055] In step S1 of Fig. 9, the material sheets of the mask body 2, the filter housing portion 3a, the filter 4, and the adhesive cloth 5 are cut with a Thomson blade. Of the shapes of the cut materials, the mask body 2 has a specific rounded shape as a whole, as if the left and right sides of an ellipse were folded upward and the center was bulged, as shown in Fig. 10(a), and large holes that become ear hooks are formed on the left and right. The filter housing portion 3a has slits 33a and the like as shown in Fig. 10(b), but overall it has a drum shape that bulges upward.

[0056] As shown in FIG. 10(d), the adhesive cloth 5 is made up of a cloth piece 51 having the same shape as the entire filter accommodating portion 3a and an upper portion 3 of the filter accommodating portion 3a. 110(e), the nonwoven fabric piece 8 having the same shape as the adhesive fabric piece 52a is not present in the first embodiment, and the presence of the nonwoven fabric piece 8 makes it possible to make the upper side 31a of the slit 33a of the filter accommodating section 3a less permeable to air than the remaining part 32a of the filter accommodating section 3a and the mask body 2.

[0057] In step S1a of FIG. 9, as shown in FIGS. 11(a) and 11(b), a piece of adhesive fabric 52a and a piece of nonwoven fabric 8 are set on top of it at a predetermined position inside the cut filter accommodating section 3a, and these set materials are bonded together using a flat plate (press machine).

[0058] In step S2 of Fig. 9, as shown in Figs. 11(c) to (e), the adhesive cloth piece 51, the wire 7, and the filter 4 are set in their respective prescribed positions on the cut mask body 2, and the previously adhered filter housing portion 3a is set in its prescribed position with the front and back facing upside down. Then, in step S3 of Fig. 9, these set materials are adhered together using a flat plate (press machine). The temperature and time at this time are set in advance. The adhered materials are then heated to 300° C. for 24 hours. 12 As shown in (a) to (d), they are compressed into a flat plate shape.

[0059] In step S4 of Fig. 9, the bonded materials are molded into a three-dimensional shape with a slight bulge near the center of the mask body 2, forming a mask. The temperature and time at this time are also set in advance. The mask-molded materials become products such as those shown in Figs. 8(a) to (d).

[0060] 9, the appearance (dirt, foreign matter, etc.) and shape abnormality of the mask-molded products are inspected, and only those that pass the inspection are packed in bags. These packed products are then packaged and shipped.

[0061] 7, for example, in winter, a user 6 wearing glasses places the left and right ear loops 21, 22 of the mask body 2 of the sanitary mask 1a over both ears, and wears the mask so that the mouth and nostrils of the face are aligned with the outwardly bulging parts near the center of the mask body 2. This makes it easier to breathe, as the mask body 2 does not block the mouth or nostrils.

[0062] In addition, the lower end 331a of the upper side 31a of the filter housing portion 3a inside the mask body 2 is folded upward and hooked on the bridge of the nose of the user 6. At this time, when the wire 7 attached near the upper end of the filter housing portion 3a is pressed near the left and right sides of the bridge of the nose of the user 6, the upper side 31a of the filter housing portion 3a inside the mask body 2 blocks the passage of exhaled air. This ensures airtightness during use, preventing glasses from fogging up.

[0063] Furthermore, the remaining part 32a of the filter housing part 3a on the inside of the mask body 2 and the part of the upper side 31a turned up by the folding back as shown in Fig. 8(d) allow the exhaled air to pass through the filter 4. This significantly improves the sterilization effect and makes it possible to deal with PM2.5, etc.

[0064] As described above, the sanitary mask 1a according to the second embodiment comprises the mask body 2, the filter accommodating section 3a whose periphery is fixed inside the mask body 2, and the filter 4 accommodated in the filter accommodating section 3a, and the upper side 31a of the slit 33a of the filter accommodating section 3a is constructed by covering a piece of nonwoven fabric 8 similar to the filter 4 on a continuous foam body, and the remaining part 32a of the filter accommodating section 3a and the mask body 2 are constructed by a continuous foam body, so that it is possible to obtain the effect of suppressing fogging of glasses while maintaining the overall sterilization effect, etc.

[0065] In addition, in winter, when glasses are prone to fogging, the lower end 331a of the upper side 31a of the filter housing part 3a is folded upward to prevent glasses from fogging up, whereas in summer, when glasses are less likely to fogging up and when wearing a mask or when not wearing glasses at all, the lower end 331a of the upper side 31a of the filter housing part 3a can be used without folding it upward. As a result, it is easy for anyone to carry and comfortable to wear at any time.

[0066] (Embodiment 3) However, in the sanitary masks 1 and 1a of the above-mentioned embodiments 1 and 2, the mask body may slip up while the user is talking. The purpose of the third embodiment of the present invention is to solve this problem. Fig. 13 is a perspective view showing the sanitary mask 1b according to the third embodiment of the present invention in use, and Fig. 14 is a schematic diagram of the sanitary mask 1b according to the third embodiment, where (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. The bottom view is vertically symmetrical with the plan view, and the right side view is horizontally symmetrical with the left side view.

[0067] As shown in Figures 13 and 14(a) to (d), the sanitary mask 1b according to the third embodiment is made almost entirely of sponge, and includes a mask body 2, a filter accommodating section 3b whose periphery is fixed to the inside of the mask body 2, and a filter 4 accommodated in the filter accommodating section 3b. A first slit 33a in a U-shape (corresponding to a downwardly recessed shape) that opens gently in the left-right direction is made in the upper part of the filter accommodating section 3b, so that the lower end 331a of the upper side 31a of the first slit 33a of the filter accommodating section 3b can be folded upward and hooked on the bridge of the nose of the user 6 for use. A second slit 33c in an inverted U-shape (corresponding to an upwardly protruding shape) that opens gently in the left-right direction is made in the lower part of the filter accommodating section 3b, so that the lower end 331a of the upper side 31a of the second slit 33c of the filter accommodating section 3b can be folded upward and hooked on the bridge of the nose of the user 6 for use. above The mask can be used by hanging the mask around the chin of the user 6 with the end 331c folded downward (such a state of use is shown by the two-dot chain lines in FIGS. 14(a) to (d)).

[0068] The reason why the first slit 33a is U-shaped and the second slit 33c is inverted U-shaped is to fold back a larger amount of the lower end 331a of the upper side 31a of the first slit 33a at the top of the filter accommodating section 3b upwards compared to the linear dividing section 33 of the first embodiment, making it easier to hook it around the user's nose, and to fold back a larger amount of the upper end 331c of the lower side 31c of the second slit 33c at the bottom of the filter accommodating section 3b downwards, making it easier to hook it around the user's chin. Here, reference numeral 5 denotes an adhesive cloth, reference numeral 33b denotes a small circular cutout expansion prevention section, reference numeral 7 denotes a wire, reference numeral 8 denotes a a,8c In the following, elements similar to those in the first and second embodiments are given the same reference numbers, and repeated explanations will be omitted as much as possible.

[0069] The filter accommodating portion 3b is large enough to accommodate the filter 4 as a whole, and its upper side 31a, lower side 31c and remaining portion 32a are integrally formed except for slits 33a and 33c. The upper side 31a and lower side 31c of the filter accommodating portion 3b are formed by forming a nonwoven fabric piece 8 on an open cell foam. a,8c The nonwoven fabric piece 8 is covered with a,8c For example, the same wire as that on the back surface of the filter 4 is used. For example, the wire 7 is a single wire having a flat cross section.

[0070] FIG. 9 is also a flow chart showing the manufacturing procedure of the sanitary mask 1b according to the third embodiment, FIG. 15 is an explanatory diagram showing the state in which each material of the sanitary mask 1b according to the third embodiment is cut, FIG. 16 is an explanatory diagram showing the procedure for setting the sanitary mask 1b according to the third embodiment, and FIG. 17 is an explanatory diagram showing the state in which the setting of the sanitary mask 1b according to the third embodiment is completed, where (a) is a plan view, (b) is a front view, (c) is a left side view, and (d) is a rear view. Note that the shading in FIG. 16 is added for convenience of explanation. In addition, the bottom view in FIG. 17 is almost vertically symmetrical with the plan view, and the right side view is horizontally symmetrical with the left side view. Below, the manufacturing procedure of the sanitary mask 1b according to the third embodiment will be outlined with reference to FIG. 9, FIG. 15 to FIG. 17(a) to (d). It is assumed that sheets of each material of the sanitary mask 1b and the wire 7 are prepared in advance.

[0071] In step S1 of Fig. 9, the material sheets of the mask body 2, the filter accommodating section 3b, the filter 4, and the adhesive cloth 5 are cut with a Thomson blade. Of the shapes of the cut materials, the mask body 2 has a specific rounded shape as a whole, as if the left and right sides of an ellipse were folded upward and the center was bulged, as shown in Fig. 15(a), and large holes that become ear hooks are formed on the left and right. The filter accommodating section 3b has a first cut 33a, a second cut 33c, etc., as shown in Fig. 15(b), but overall has a drum shape that bulges upward.

[0072] As shown in FIG. 15(d), the adhesive cloth 5 is made up of a cloth piece 51 having the same shape as the entire filter accommodating portion 3b and a lower portion 33a of the first slit 33a of the filter accommodating portion 3b. 1 The cloth piece 52a has the same shape as the part that is visible when the lower end 331a of the filter accommodating portion 3b is folded upward, and the lower side 33b of the second slit 33c of the filter accommodating portion 3b is folded upward. 1 C above 15(e), the nonwoven fabric piece 8a having the same shape as the adhesive fabric piece 52a and the nonwoven fabric piece 8c having the same shape as the adhesive fabric piece 52c are not included in the first embodiment. The presence of the nonwoven fabric pieces 8a and 8c makes it possible to make the upper side 31a of the first slit 33a at the top of the filter accommodating section 3b and the lower side 31c of the second slit 33c at the bottom of the filter accommodating section 3b less permeable to air than the remaining part 32a of the filter accommodating section 3b and the mask body 2.

[0073] In step S1a of FIG. 9, as shown in FIGS. 16(a) and 16(b), adhesive fabric pieces 52a, 52c and nonwoven fabric pieces 8a, 8c are set on top of them at predetermined positions inside the cut filter accommodating section 3a, and these set materials are bonded together using a flat plate (press machine).

[0074] In step S2 of Fig. 9, as shown in Figs. 16(c) to (e), the adhesive cloth piece 51, the wire 7, and the filter 4 are set in their respective prescribed positions on the cut mask body 2, and the previously adhered filter housing portion 3b is also set in its prescribed position with the front and back facing upside down. Then, in step S3 of Fig. 9, these set materials are adhered together using a flat plate (press machine). The temperature and time at this time are preset. The adhered materials are then heated to 300° C. for 24 hours, and then cooled to 300° C. for 24 hours. 17 As shown in (a) to (d), they are compressed into a flat plate shape.

[0075] In step S4 in Fig. 9, the bonded materials are molded into a three-dimensional shape with a slight bulge near the center of the mask body 2, forming a mask. The temperature and time at this time are also set in advance. The mask-molded materials become products such as those shown in Figs. 14(a) to (d).

[0076] 9, the appearance (dirt, foreign matter, etc.) and shape abnormality of the mask-molded products are inspected, and only those that pass the inspection are packed in bags. These packed products are then packaged and shipped.

[0077] 13, for example, in winter, a user 6 wearing glasses places the left and right ear loops 21, 22 of the mask body 2 of the sanitary mask 1b over both ears, and wears the mask so that the mouth and nostrils of the face are aligned with the outwardly bulging parts near the center of the mask body 2. This makes it easier to breathe, as the mask body 2 does not block the mouth or nostrils.

[0078] In addition, the lower end 331a of the upper side 31a of the filter housing part 3b inside the mask body 2 is folded upward and hooked on the bridge of the nose of the user 6. At this time, when the wire 7 attached near the upper end of the filter housing part 3a is pressed near the left and right sides of the bridge of the nose of the user 6, the upper side 31a of the filter housing part 3a inside the mask body 2 blocks the passage of exhaled air. This ensures airtightness during use, preventing glasses from fogging up.

[0079] In addition, the upper end 331c of the lower side 31c of the filter housing portion 3b inside the mask body 2 is folded downward and hooked around the chin of the user 6. Then, even when the user 6 talks while wearing the mask 1b, the mask body 2 is unlikely to slip up.

[0080] Furthermore, the remaining part 32a of the filter housing part 3a on the inside of the mask body 2 and the turned-up parts of the upper sides 31a and 31c due to the folding back as shown in Fig. 14(d) allow the exhaled air to pass through the filter 4. This significantly improves the sterilization effect and makes it possible to deal with PM2.5, etc.

[0081] As described above, the sanitary mask 1b according to the third embodiment comprises the mask body 2, the filter accommodating section 3b whose periphery is fixed to the inside of the mask body 2, and the filter 4 accommodated in the filter accommodating section 3b, and the upper side 31a of the first slit 33a of the filter accommodating section 3b is constructed by covering a piece of nonwoven fabric 8a similar to the filter 4 on a continuous foam body, and the remaining part 32a of the filter accommodating section 3b and the mask body 2 are constructed by a continuous foam body, so that it is possible to obtain the effect of suppressing fogging of glasses while maintaining the overall sterilization effect, etc.

[0082] In addition, in winter, when glasses are prone to fogging, the lower end 331a of the upper side 31a of the filter housing part 3b is folded upward to prevent glasses from fogging up, whereas in summer, when glasses are less likely to fogging up and when wearing a mask or when not wearing glasses at all, the lower end 331a of the upper side 31a of the filter housing part 3b can be used without folding it upward. As a result, it is easy for anyone to carry and comfortable to wear at any time.

[0083] In addition, a second slit 33c is made in the left-right direction at the bottom of the filter housing portion 3b, and the lower side 31c of the second slit 33c is made to have a second structure that is less permeable to air than the remaining portion 32a and the mask body 2, and the upper end 331c of the lower side 31c of the second slit 33c can be folded downward and hooked around the chin of the user 6, so that the mask body 2 does not slide up even when the user 6 talks while wearing the mask 1b. As a result, the sanitary mask 1b can be worn for long periods of time even in summer without becoming too large.

[0084] In the above-mentioned embodiments 1, 2 and 3, the filter 4 is fixed in the filter housing portion 3 (3a, 3b) by appropriately applying the adhesive cloth 5, but if the filter 4 is left free and is housed in the filter housing portion 3 (3a, 3b) so as to be freely insertable and detachable, it can be conveniently replaced periodically. Furthermore, by washing the mask body 2 and the filter 4 at appropriate times to maintain a hygienic state, it can be used repeatedly, which is economical for the user.

[0085] A thermochromic material may be mixed into the mask body 2 of the above-mentioned first, second and third embodiments. In this case, it is convenient to check the body temperature of the user 6. Specifically, a commercially available color powder (thermochromic material) may be mixed into the sponge sheet, which is the material of the mask body 2, at the manufacturing stage. The mask body 2 may be a certain color when the user 6 has a normal body temperature, but may change to another color when the temperature exceeds 37°C. The color before and after the change of color is not particularly limited. The area that changes color may not be the entire mask, but may be a part of it, and the change of color may cause letters or illustrations to appear on the outside of the mask body 2.

[0086] In addition, the above-mentioned embodiments 1, 2, and 3 can be applied in combination as appropriate. For example, by changing the linear division 33 of embodiment 1 to the U-shaped slit 33a of embodiment 2, the lower end 331 of the upper side 31 of the division 33 of the filter housing part 3 of embodiment 1 can be folded back upward by a larger amount, making it easier to hook it on the user's nose. In addition, by applying the wire 7 of embodiments 2 and 3 to embodiment 1, for example, the airtightness during use is ensured as in embodiments 2 and 3, so that fogging of glasses can be more effectively prevented.

[0087] In addition, in the above-mentioned first, second and third embodiments, the filter accommodating portion 3 (3a, 3b) is temporarily attached to the mask body 2 by pressure bonding using a flat plate (press machine), but ultrasonic welding or ultrasonic sewing may also be used.

[0088] Furthermore, in the above-mentioned embodiments 1 and 2, an extension portion (not shown) extending further downward is provided at the bottom of the filter accommodating portion 3, 3a, and the inside of the extension portion is covered with nonwoven fabric. The lower end of the extension portion can then be hooked around the chin of the user 6 for use, thereby achieving the same effect as in embodiment 3 with a simpler structure.

[0089] In addition, in the above-mentioned embodiment 3, the first cut 33a and the second cut 33c have the same shape and are symmetrical in the up-down direction, but they do not necessarily have to have the same shape, and for example, the second cut 33c may be larger than the first cut 33. Furthermore, the first cut 33a and the second cut 33c may be integrated by hollowing out the space between them.

[0090] In addition, in the above-mentioned first, second and third embodiments, the mask body 2 and the filter housing portion 3 (3a, 3b) of the sanitary masks 1, 1a and 1b are made of sponge, but other materials such as cloth and nonwoven fabric may be selected. A sponge mask has the advantage of being mass-producible, and compared to a cloth mask or a nonwoven fabric mask, the ear hooks 21 and 22 of the mask body 2 do not press the ears of the user 6 as much, and especially in the case of a user who wears glasses, there is a low risk of the ears being deformed and the glasses falling off. Furthermore, compared to a cloth mask or a nonwoven fabric mask, all of the above-mentioned first, second and third embodiments have a nonwoven fabric filter 4 interposed therebetween, so that the sterilization effect and the PM2.5 removal effect are comparable. [Explanation of symbols]

[0091] 1,1a,1b Sanitary mask 2 Mask body 21,22 Ear hook 3, 3a, 3b Filter housing 31, 31a Upper side of filter housing 32 Underside of filter housing 32a Remaining part of filter housing 33 Division (corresponding to the first break) 33a Break (corresponding to the first break) 33b Notch expansion prevention part 33c Second gap 331, 331a Upper and lower ends of filter housing 331c Lower upper end of filter housing 4. Filters 5 Adhesive cloth 51, 52, 52a, 52c Adhesive cloth pieces 6 User 7 Wire 8, 8a Upper cloth piece of filter housing 8c Lower cloth piece of filter housing [Prior art documents] [Patent documents]

[0092] [Patent Document 1] JP 2019-90134 A

Claims

1. The mask includes a mask body, a filter housing portion whose periphery is fixed to the inside of the mask body, and a filter housed in the filter housing portion; A first slit is made in the left-right direction in the upper part of the filter housing part, so that the upper side of the first slit of the filter housing part has a first structure that is less permeable to air than the mask body; A sanitary mask characterized in that the mask is configured so that the upper side of the first slit of the filter housing portion can be reversibly folded upward and hooked over a user's nose for use.

2. A sanitary mask as described in claim 1, characterized in that the first slit of the filter accommodating section has a downwardly concave shape.

3. The hygienic mask according to claim 1 or 2, characterized in that, as the first structure, the upper side of the first slit of the filter housing portion is made of a closed cell foam or a continuous cell foam covered with a nonwoven fabric, and the mask body is made of a continuous cell foam.

4. A second slit is made in the left-right direction in the lower part of the filter accommodating section, so that the lower side of the second slit of the filter accommodating section has a second structure that is less permeable to air than the mask body; The sanitary mask according to any one of claims 1 to 3, characterized in that the lower side of the second slit of the filter accommodating section can be reversibly folded downward and hooked around the user's chin for use.

5. A sanitary mask as described in claim 4, characterized in that the second slit of the filter accommodating section has an upwardly protruding shape.

6. The sanitary mask according to claim 4 or 5, characterized in that, as the second structure, the lower side of the second slit of the filter accommodating section is made of a closed cell foam or a continuous cell foam covered with a nonwoven fabric.

7. The sanitary mask according to any one of claims 1 to 3, characterized in that an extension portion is provided extending further downward from the lower portion of the filter accommodating portion, and the lower side of the extension portion can be hooked around the user's chin for use.

8. The sanitary mask according to claim 7, characterized in that the inside of the extension portion is covered with a nonwoven fabric.

9. The sanitary mask according to any one of claims 1 to 8, characterized in that the filter is made of nonwoven fabric.

10. The sanitary mask according to any one of claims 1 to 9, characterized in that a wire is attached to the vicinity of an upper end of the filter housing portion.

11. The sanitary mask according to any one of claims 1 to 10, characterized in that the vicinity of the center of the mask body is formed to bulge outward.

12. The sanitary mask according to any one of claims 1 to 11, characterized in that a thermochromic material is mixed into the mask body.

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