JP2021110054A - mask - Google Patents

Abstract

【Theme】
Provided is a pleated mask that easily adapts to the wearer's face shape and is less likely to cause suffocation, and that can sufficiently cover the vicinity of the wearer's ear and has high adhesion.
SOLUTION:
The mask 100 has a mask body 10 provided with a breathable sheet material, and the mask body 10 has a plurality of folds 14 having mountain folds 12 folded along the lateral direction, and the left and right sides of the mask body 10 The sides (right side 21, left side 22) are located on the ear side from the midpoint between the cheekbone apex 202 of the wearer 200 and the medial end 204 of the external auditory canal opening, and the mask body 10 with respect to the vertical dimension Y of the mask body 10. The horizontal dimension X of is 2.7 times or more and 4.4 times or less.
To be equipped.
[Selection diagram] Fig. 1

Description

The present invention relates to a mask having a large covering area on the wearer's face and having a good usability, and more particularly to a pleated mask.

The purpose of the mask is various, such as dustproof, pollenproof, and prevention of the spread of self-cough. Therefore, masks are used regardless of the season.

There are various types of masks, for example, a pleated mask having a plurality of folds folded along the lateral direction, or a three-dimensional mask having no folds and having a shape along the unevenness of the face is known.

The above-mentioned pleated mask has a mask body that is substantially flat before use, and is a type that is brought into close contact with the wearer's face by opening the pleats appropriately at the time of use, and the aspect ratio of the mask body is approximately 1: 1.6. The ones with ~ 1: 1.85 are the mainstream. Such a ratio has been widely adopted by those skilled in the art as an appropriate ratio capable of maintaining good adhesion to the face while sufficiently covering the nasal cavity and the area from the mouth to the chin. At this ratio, by adopting a design in which the left and right sides of the mask body are placed near the apex of the wearer's cheekbone, the left and right sides of the mask body can be opened widely in the vertical direction at the center of the mask body. It can be in good contact with the wearer's face (specifically, the area from the vicinity of the apex of the cheekbone to the tip of the jaw).

On the other hand, a horizontally long three-dimensional mask has been proposed for the purpose of providing a mask having higher adhesion. Specifically, Patent Document 1 below proposes a three-dimensional mask in which the lateral length of the mask body is set so that the left and right sides of the mask body reach the vicinity of the ear.

Utility Model Registration No. 3100600

However, the conventional mask has the following problems.
That is, the conventional pleated mask has an advantage that it can be easily matched to the face shape and face size of many wearers (hereinafter, may be abbreviated as "face shape, etc.") due to the characteristic of pleats, but it is lateral. The size is short, and the wearer's cheek is exposed more widely on the ear side than on the left and right sides located near the apex of the cheekbone. Therefore, there is a problem that the state of sunburn differs between the covered portion and the uncoated portion of the cheek in summer, and the skin feeling with respect to the outside air temperature differs greatly between the covered portion and the uncoated portion in winter.

On the other hand, the horizontally long mask described in Patent Document 1 solves the above-mentioned problem of the pleated mask, but the wearer may feel stuffy as compared with the pleated mask. In the pleated mask, it is easy to match the shape and size of the wearer's face by adjusting the opening of the pleats, whereas the mask described in Patent Document 1 has a fixed shape, so that a gap is created. This is because it is difficult to secure the above-mentioned mouth space by designing so as not to prevent the mouth space.
Further, since the shape of the mask described in Patent Document 1 cannot be adjusted by the wearer, a gap is likely to occur between the mask and the face when the wearer's face is small, and when the wearer's face is large, a gap is likely to occur. The eyes and chin may not be covered sufficiently.

The present invention has been made in view of the above-mentioned problems. That is, the present invention provides a pleated mask that easily adapts to the wearer's face shape and the like and is less likely to cause suffocation, and that can sufficiently cover the vicinity of the wearer's ear and has high adhesion.

The mask of the present invention has a mask body provided with a breathable sheet material, and the mask body has a plurality of folds having mountain folds folded along the lateral direction, and the left and right sides of the mask body. The side is located on the ear side from the midpoint between the apex of the wearer's cheekbone and the medial end of the ear canal opening, and the horizontal dimension of the mask body is 2.7 times or more and 4.4 times the vertical dimension of the mask body. It is characterized by the following.

The mask of the present invention having the above configuration has the advantages of the conventional pleated mask that it is easy to fit the wearer's face shape and the like and secures an appropriate mouth space, and it extends to the vicinity of the ear while maintaining good adhesion. Can be covered.

It is a front view of the mask which concerns on one Embodiment of this invention. FIG. 5 is a cross-sectional view taken along the line AA of the mask shown in FIG. (3a) is a partial front view of the mask according to one embodiment of the mask of the present invention, and (3b) is a partial front view of the mask according to another embodiment of the present invention. It is explanatory drawing which shows the state which the mask of this invention is attached to a person. (5a) is an explanatory view showing a state in which the conventional mask is worn by a person, and (5b) is a front view of the conventional mask.

The present invention provides a mask that can cover not only the nasal cavity, mouth, and chin but also the wearer's face widely not only in the nasal cavity, mouth, and chin, but also in the vicinity of the ear, while maintaining good adhesion in the aspect of the pleated mask. According to the diligent studies of the present inventors, when the conventional pleated mask is simply enlarged and the mask is designed so as to cover the ears, the mask body bends in the vertical direction near the ears and good adhesion cannot be maintained. I understood it. Therefore, after repeated studies, the coverage area can be expanded while maintaining good adhesion by making the shape remarkably elongated in the lateral direction, which deviates from the conventional wisdom of aspect ratio in pleated masks. We found that it was possible and completed the present invention. Moreover, although the mask of the present invention exhibits a characteristic shape that is clearly different from the conventional pleated mask in the state before use, it is different from the conventional pleated mask except that it covers a wide area up to the ear when worn. There is no noticeable difference in appearance. Therefore, the mask of the present invention can provide a good feeling of use to the wearer without giving a discomfort in appearance. The mask of the present invention may be, for example, a disposable mask, or a mask in which a replaceable gauze portion or the like is installed inside the mask body and is used repeatedly.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5. In all drawings, similar components are designated by the same reference numerals, and duplicate description will be omitted as appropriate.
In the description of the mask, the directions such as up / down / left / right, horizontal, and vertical refer to the up / down / left / right directions of the front-viewed mask confirmed on the paper of FIG.
FIG. 1 is a front view of the mask 100 according to an embodiment of the present invention. The term "front" as used herein means a surface that is exposed to the outside when worn by the wearer. FIG. 2 is a cross-sectional view taken along the line AA of the mask 100 shown in FIG. FIG. 3a is a partial front view of the mask 100, and FIG. 3b is a partial front view of the mask 110 which is a modification of the mask 100. FIG. 4 is an explanatory view showing a state in which the mask of the present invention is worn by a person (wearer 200). In FIG. 4, a part of the configuration of the mask 100 is not shown as appropriate.
FIG. 5a is an explanatory view showing a state in which the conventional mask 300 is worn by a person (wearer 200), and FIG. 5b is a front view of the conventional mask 300. Although the pleats are not shown in the mask 300, the mask 300 may be appropriately provided with the same pleats as a general pleated mask.

As shown in FIG. 1, the mask 100 has a mask body 10 provided with a breathable sheet material, and the mask body 10 has a fold 14 having a mountain fold portion 12 (see FIG. 2) folded along the lateral direction. Are provided in multiples. The mask 100 having a plurality of folds 14 is a so-called pleated mask.
In the mask 100, the left and right sides (right side 21, left side 22) of the mask body 10 are located on the ear side from the midpoint between the cheekbone apex 202 of the wearer 200 and the medial end 204 of the ear canal opening (FIG. 4). reference). The mask 100 of the present invention is configured such that the horizontal dimension X of the mask main body 10 is in the range of 2.7 times or more and 4.4 times or less with respect to the vertical dimension Y of the mask main body 10 described above.

In the present invention, the cheekbone apex 202 refers to a portion of the general skeleton where the cheekbone is stretched, and is approximately slightly below the outer corner of the eye of the wearer 200 and refers to a position near the ear. Further, in the present invention, the inner end 204 of the ear canal opening refers to the opening of the outer ear and the end on the face side. Neither the cheekbone apex 202 nor the medial end of the ear canal opening 204 defines an exact point, but a term used to explain that the right side 21 and the left side 22 of the mask 100 are located near the ear. be.

As shown in FIG. 5a, in the conventional mask 300, the left and right side sides (the left side side 306 is shown in FIG. 5a) are generally arranged near the cheekbone apex 202 of the wearer 200. According to such a design, it is easy to bring the left and right sides of the wearer 300 into close contact with each other from the vicinity of the cheekbone apex 202 to the chin. In order to obtain such adhesion, the conventional mask body 302 shown in FIG. 5b is designed to have an aspect ratio of about 1: 1.6 to 1: 1.85. Specifically, the mask body 302 shown in FIG. 5b has an aspect ratio of 1: 1.8.
However, in such a configuration, as can be understood from FIG. 5a, the cheek of the wearer 200 is exposed more on the ear side than the vicinity of the cheekbone apex 202.

On the other hand, the mask 100 of the present invention is configured to have an elongated shape in the left-right direction, and as shown in FIG. 4, the left-right side side (the left side side 22 is shown in FIG. 4) is in the vicinity of the ear of the wearer 200. Be placed. Therefore, a large covering area of the wearer's face can be secured from the vicinity of one ear to the vicinity of the other ear, and since there are a plurality of folds along the lateral direction, the wearer's face in the vertical direction The covering area can be secured as before. Moreover, since the vertical dimension ratio is smaller than the horizontal dimension, the left and right sides are less likely to bend and a gap is less likely to occur in the vicinity of the ear.
Further, when the mask 100 of FIG. 1 and the mask 300 of FIG. 5b are compared, it is clearly understood that the mask 100 has an unprecedented laterally elongated characteristic shape. However, at the time of wearing, as can be understood by comparing the mask 100 shown in FIG. 4 with the mask 300 shown in FIG. , There is almost no difference in appearance when worn as compared with the mask 300. That is, although the mask 100 exhibits a very characteristic shape before being worn, it does not give a sense of discomfort in appearance when worn.
The mask 100 will be described in more detail below.

(Mask body)
The mask body 10 is arranged at a position facing the face of the wearer 200. The shape of the mask body 10 is not particularly limited. For example, as shown in FIG. 1, the mask body 10 can be a rectangle having an upper side 26, a lower side 27, a right side 21, and a left side 22 in the shape before mounting.
As shown in FIGS. 1 and 2, the mask main body 10 has a folded end 54 in which the upper and lower ends of the sheet material constituting the mask main body 10 are folded back toward the front side, and the vicinity of the folded end 54 on the upper side 26 side is It is joined by the upper side joint portion 53, and the vicinity of the folded end 54 on the lower side 27 side is joined by the lower side joint portion 53'. In FIG. 2, the upper side joint portion 53 and the lower side joint portion 53'are shown in black.
A nose fitter 51 is built in the folded portion formed by the upper side joint portion 53 to form a bag. By deforming the nose fitter 51 along the nose shape of the wearer 200, the mounting position of the mask body 10 can be stabilized. A joint portion serving as a nose fitter stopper 52 is appropriately provided near both the left and right ends of the nose fitter 51, which is a folded portion of the upper side 25 so that the arrangement position of the nose fitter 51 does not shift.

Regarding the present invention, the joint portion is a portion where the mask body 10 is joined and fixed in the thickness direction. The joining method is not particularly limited, and for example, welding processing such as ultrasonic sealing or heat sealing is common, but other methods such as sewing may also be used. In this embodiment, a joint portion formed exclusively by welding will be described.

When the mask 100 is worn, the left and right sides of the mask body 10 are arranged on the ear side from the midpoint between the cheekbone apex 202 of the wearer 200 and the medial end 204 of the ear canal opening, as shown by the left side 22 shown in FIG. NS. More preferably, it is preferable that the cheeks are arranged in the vicinity of the ears so that the cheeks are not substantially exposed between the left and right sides and the ears.

In the mask 100, the horizontal dimension X of the mask body 10 is 2.7 times or more and 4.4 times or less, preferably 3.3 times or more and 3.9 times or less, with respect to the vertical dimension Y of the mask body 10. .. The vertical dimension Y here means the dimension in the vertical direction of the mask body 10 in which the folds 14 before mounting are folded, and the horizontal dimension X means the dimension in which the folds 14 before mounting are folded. It means the dimension of a certain mask body 10 in the left-right direction. By adopting such a ratio, the covering area for the wearer 200 can be remarkably expanded as compared with the conventional case while maintaining good adhesion to the face.
Although not shown, when the mask body 10 has a non-rectangular shape, the vertical dimension Y means the dimension when the right side 21 and the left piece 22 have the same dimension, and when they are different, the right side has the same dimension. It means the shorter dimension of the side 21 and the left side piece 22. Further, the horizontal dimension X means the maximum dimension in the left-right direction of the mask body 10 in which the folds 14 before mounting are in a folded state.

The size of the mask body 10 is not particularly limited, but for example, the vertical dimension Y can be 60 mm or more and 75 mm or less, and the horizontal dimension X can be 200 mm or more and 260 mm or less in the state where the folds 14 are folded before mounting. .. Further, in the mask body 10, the vertical dimension Y when all the folds 14 are opened can be set to about 130 mm or more and 150 mm or less.
In the mask body 10, the ratio of the maximum value (maximum length) of the vertical dimension Y when all the folds 14 are opened to the vertical dimension Y (minimum length) on the left and right sides before mounting is the minimum length: maximum length = 1. : It is preferably about 1.5 to 1: 2.5, and more preferably about vertical minimum: vertical maximum = 1: 1.8 to 1: 2.1. In this way, by designing the vertical dimension Y of the left and right sides arranged near the ears to be relatively small and providing an appropriate amount of folding of the folds 14, the nasal cavity is provided in the central portion of the mask body 10 in the left-right direction. It can be designed to cover from the chin to the chin.

The breathable sheet material constituting the mask body 10 is not particularly limited as long as it is a breathable sheet material that allows the wearer 200 wearing the mask 100 to breathe comfortably. For example, the mask body 10 can be composed of any or a combination of non-woven fabric, woven fabric, knitted fabric, and the like. Further, the mask main body 10 may have a single-layer structure made of one sheet material, or may have a laminated structure made by laminating a plurality of sheet materials.

The function of the mask 100 can be changed by the sheet material. For example, UV processing may be performed by blending titanium oxide with the non-woven fabric, or the texture and gas permeability of the sheet material may be adjusted so as to be able to shield particles such as dust, pollen or virus. can. Further, it is also possible to add a plurality of functions to the mask 100 by laminating a UV-processed UV cut sheet material and a shielding sheet material capable of shielding the particles.

More specifically, for example, a UV cut sheet material and a pollen shielding sheet material or a virus shielding sheet material can be laminated to provide a summer mask. The summer mask may have a laminated structure including a first UV cut sheet material, a second UV cut sheet material, and a shielding sheet material from the front side. It is preferable that a plurality of UV cut sheet materials are laminated so that the total of the sheet materials shields 90% or more of UV rays. The laminated structure in the summer mask may be composed of a non-woven fabric, or may be composed of a combination of a non-woven fabric sheet and a non-woven fabric sheet.

Next, the folds 14 in the mask body 10 will be described. As shown in FIG. 2, the mask body 10 has a plurality of folds 14 having mountain folds 12 folded along the lateral direction. By providing the folds 14, it is possible to provide a mask 100 having an appropriate mouth space according to the shape of the face of the wearer 200 and having a good feeling of use in which suffocation is suppressed.

As shown in FIG. 1, a first joint portion 40 is provided in the vicinity of the left and right side sides (right side piece 21, left side piece 22) of the mask body 10 in order to maintain the shape of the folds 14. The first joint portion 40 is a portion where a plurality of folds 14 formed in the mask body 10 are joined in the thickness direction to maintain a folded state, and generally, along the right side 21 and the left side 22. It is provided near the outer edge of the mask body 10. In the mask body 10 shown in FIG. 1, the entire folds 14 (first folds 14a, second folds 14b, third folds 14c, fourth folds 14d) are welded and folded by the first joint 40. ing.
In addition to the first joint 40, a second joint 42 for controlling the opening of at least a part of the folds 14 is provided on the left-right center (hereinafter, also referred to as the mask center) side of the first joint 40. Is preferable. In the mask main body 10 shown in FIG. 1, among the plurality of folds 14, the first fold 14a provided on the upper side and the fourth fold 14d provided on the lower side are located at an intermediate position in the vertical direction. , Intermediate folds (second fold 14b and third fold 14c) are joined by a second joint 42. For example, the number of folds 14 joined by the second joint 42 is equal to or less than the number joined by the first joint 40.

The second joint 42 controls the opening of the region of the folds 14 joined by the second joint 42 from the first joint 40 to the second joint 42, and laterally from the second joint 42. It serves as a fulcrum for the opening of the folds 14 toward the center. By providing a fulcrum slightly closer to the center than the first joint portion 40, it is possible to improve the three-dimensionality of the mask body 10 at the time of wearing and suppress the contact of the mask body 10 with the mouth. As a result, it is possible to provide the mask 100 that reduces the suffocation of the wearer 200 and exhibits a better usability.
The position of the second joint portion 42 can be appropriately determined in consideration of the person to be worn by the mask 100 and the specified size (adult male, adult female, child, L size, M size, etc.). If the second joint 42 is provided too close to the center of the mask of the mask body 10, the opening of the folds 14 is controlled too much and the operating range of the pleats is reduced. As a result, in the mask main body 10, the region from the second joint portion 42 on the right side to the right side 21 and the region from the second joint portion 42 on the left side to the left side 22 become difficult to follow the line of the face. Wrinkles may form in the area and gaps may occur.
Therefore, for example, the distance from the center of the mask to the second joint portion 42 is preferably 75 mm or more and 95 mm or less, more preferably 80 mm or more and 90 mm or less, and further preferably 83 mm or more and 88 mm or less. The above-mentioned distance refers to the distance between the center of the mask and the portion of the second joint portion 42 closest to the center of the mask. By designing the arrangement position of the second joint portion 42 within such a numerical range, it is difficult for a gap between the mask body 10 and the face to occur even when used by a person with a small face, while it is used by a person with a large face. Even in such a case, it is possible to satisfactorily prevent insufficient coverage of the eyes and chin.

The first joint portion 40 and the second joint portion 42 shown in FIG. 1 are each composed of a plurality of point-shaped welded portions, and these welded portions are arranged and arranged on a straight line extending in the vertical direction. , Are formed parallel to each other. As a modification (not shown), one or both of the first joint 40 and the second joint 42 may be composed of a plurality of welded parts arranged on a non-linear line such as a curved line or a zigzag. It may be composed of one welded wire formed continuously. Further, the first joint portion 40 and the second joint portion 42 may be non-parallel.

In the mask 100 in which three or more folds 14 are formed, a more preferable embodiment includes an embodiment in which different joints are formed above and below the second joint 42 described above.
That is, as shown in FIG. 1, the mask body 10 may be formed with at least three folds 14 (in FIG. 1, the mode in which four folds 14 are formed is shown). Here, the mask body 10 has a second joint portion 42 that controls the opening of the intermediate folds (second folds 14b and third folds 14c in FIG. 1) formed in the intermediate portion in the vertical direction, and from the above intermediate folds. Open the upper joint 44 that controls the opening of the upper folds (first fold 14a in FIG. 1) provided above, and the opening of the lower folds (fourth fold 14d in FIG. 1) provided below the intermediate folds. It is preferable that at least one of the lower joints 46 to be controlled is provided. In such an aspect, the upper joint 44 is arranged closer to the ear than the second joint 42, and the lower joint 46 is arranged closer to the mouth than the second joint 42 when viewed in the lateral direction.

In the elongated mask book 100 in which the right side 21 and the left side 22 are arranged near the ears and the vertical dimension ratio to the horizontal dimension is small, the upper joint portion 44 and / or the lower joint portion 46 is further provided to be as follows. The effect is exhibited.
That is, by providing the upper joint portion 44, it is possible to maintain good adhesion of the mask body 10 to the bulge of the cheekbones, and it is possible to satisfactorily prevent the occurrence of gaps around the cheekbones. Further, by providing the lower joint portion 44, it is possible to satisfactorily prevent the occurrence of a gap in the vicinity of the jaw.

Further, according to the study by the present inventors, when the second joint portion 42 for controlling the opening of the intermediate folds is provided, the mouth space is further provided by providing the upper joint portion 44 and the lower joint portion 46. It was found that sufficient can be provided. Specifically, when the upper joint portion 44 is not provided for the second joint portion 42, the upper fold (first fold 14a) opens with the first joint portion 40 as a fulcrum, so that the inside of the mask main body 10 is used. In some cases, the space formed in the above is dispersed, and a sufficient space cannot be secured at the mouth where the most three-dimensionality is required. Similarly, when the lower joint portion 46 is not provided, the folds in the lower region of the mask body 10 are wide open and the entire jaw can be completely covered, but the space around the mouth is crushed and the three-dimensionality is impaired. There is.
Therefore, from the viewpoint of providing the mask 100 that maintains good adhesion to the face, secures a sufficient space around the mouth, and suppresses suffocation, the upper joint portion 44 and the lower joint portion 46 are particularly provided. It is preferable to provide it.
As can be understood from FIG. 1, when the mask 100 is roughly viewed, in the mask main body 10, the upper joint portion 44, the second joint portion 42, and the lower joint portion 46 are inclined downward from the ear to the jaw in this order. It is placed on the line. By configuring each fold 14 to open with the line as a fulcrum, the mask 100 makes the mask body 10 elongated in the lateral direction adhere well to the face without any gaps, and secures a sufficient space around the mouth. be able to.

Although it depends on the dimensions of the mask 100 and the user, in order to fully exert the effect of the upper joint portion 44 described above, the distance between the lower end of the upper joint portion 44 and the upper end of the second joint portion 42 is set. It is preferably 5 mm or more and 15 mm or less, and more preferably 7 mm or more and 13 mm or less.
Similarly, in order to fully exert the effect of the lower joint portion 46, the distance between the upper end of the lower joint portion 46 and the lower end of the second joint portion 42 is preferably 15 mm or more and 25 mm or less, preferably 17 mm. It is more preferably 23 mm or more.

As shown in FIG. 1, the upper joint portion 44 is composed of a plurality of welded portions, and these welded portions may be arranged on a straight line extending in the vertical direction. In this embodiment, the upper joint 44 extends in parallel with the second joint 42. As a modification omitted from the drawing, the upper joint portion 44 may be composed of a plurality of welded portions formed on a non-linear line such as a curved line or a zigzag, or a single welded wire formed continuously. It may be composed of. Further, the upper joint portion 44 and the second joint portion 42 may be non-parallel.

On the other hand, the lower joint portion 46 may be formed so as to be inclined downward from the ear direction to the chin direction as shown in FIG. 1 when the mask main body 10 is viewed from the front. By providing the lower joint portion 46 at an angle as described above, the gap between the mask main body 10 and the jaw can be suppressed to a small size, and the mask main body 10 can be fitted well to the jaw line, which is preferable. As described above, the diagonally inclined lower joint portion 46 may be configured by arranging a plurality of point-shaped welded portions in one direction as in the upper joint portion 44, but the above effect can be obtained with a relatively short length dimension. In order to exert the effect well, it is preferable that the welded portion is composed of continuous linear welds as shown in FIG.

The positional relationship of the second joint portion 42, the upper joint portion 44, and the lower joint portion 46 in the left-right direction can be appropriately determined within a range that does not deviate from the gist of the present invention. As a more preferable positional relationship, as shown in FIG. 3a, a first intermediate point 44x, which is a half point in the length direction of the upper joint portion 44, and a half point in the length direction of the lower joint portion 46. The first virtual line I connecting the second intermediate point 46x, and the second virtual line II extending in the vertical direction including the intersection 42x where the first virtual line I and the second junction 46 intersect. The intersection angle θ is preferably 30 degrees or more and 50 degrees or less, and more preferably 35 degrees or more and 45 degrees or less. stomach. The mask 100 in the embodiment in which such a positional relationship is adopted covers the cheeks of the wearer 200 to the vicinity of the ears, makes the mask body 10 better adhere to the face from the vicinity of the cheekbone apex 202 to the chin, and provides the mouth space. It can be sufficiently secured.

FIG. 3b partially shows the mask 110, which is a modification of the mask 100. The mask 110 has a second joint portion 42 having a plurality of welded portions arranged on a curved line convex in the ear direction, and a straight line in which the lower joint portion 46 does not tilt diagonally and extends in the vertical direction. It is configured in the same manner as the mask 100 except that it is formed in a shape.
Also in the mask 110, the intersection angle θ of the first virtual line I and the second virtual line II is preferably 30 degrees or more and 50 degrees or less as described above.

The aspect of the mask body 10 specifically shown in FIG. 2 has at least four folds 14 of the first fold 14a, the second fold 14b, the third fold 14c, and the fourth fold 14d from the upper side to the lower side. The folding direction of each of these folds 14 is not particularly limited, but for example, as shown in FIG. 2, in the cut surface AA formed by cutting the mask body 10 along the vertical direction, the second folds 14b and the third folds 14b and the third folds 14 It is preferable that the folded portion 50 having a substantially Ω-shaped cross section is formed by the folds 14c.
The fold 50 has a second fold 14b composed of a mountain fold portion 12 and a valley fold portion 13, and similarly a third fold 14c composed of a mountain fold portion 12 and a valley fold portion 13, and the second fold 14b is on top. The third fold 14c is folded downward while being folded in the direction. At this time, the first fold 14a is folded in the same direction as the second fold 14b (that is, upward), while the fourth fold 14d is folded in the same direction as the third fold 14c (that is, downward). ing.

In the mask body 10 provided with the folded portion 50 having a substantially Ω-shaped cross section, when the folds 14 are opened, the nasal cavity and the region covering the mouth become dome-shaped, and the mouth space is easily formed well. Therefore, it is difficult to give the wearer 200 a feeling of suffocation or discomfort such as contact between the mouth and the back surface of the mask body 10.

In the mask body 10 including the above-mentioned folding portion 50, the second joint portion 42 is provided over the second fold 14b and the third fold 14c in front view, and the upper joint portion 44 is the first fold 14a. The lower joint 46 is provided on the fourth fold 14d. In the drawings, the first fold 14a and the fourth fold 14d are each composed of one fold 14, but they can also be composed of two or more folds 14, respectively.

The folding direction of the folds 14 described above does not limit the present invention at all. The folding direction of the plurality of folds 14 may be a so-called ninety-nine fold in which the folding directions are unified upward or downward, or even if each fold 14 is randomly folded upward or downward. good.

The above description does not limit the present invention in any way, for example, any combination or all of the upper joint 44, the second joint 42, and the lower joint 46 may be viewed from the ear side. The present invention includes an embodiment arranged on a substantially continuous line toward the jaw side. The substantially continuous line here may be a straight line or a non-straight line such as a curved line or a meandering line.

(Mask body fixing part)
The mask 100 has the above-mentioned mask body 10 and an attachment portion for attaching the mask body 10 to the face. The attachment portion is a portion capable of maintaining the state in which the mask body 10 is arranged on the face of the wearer 200. The illustrated mask 100 includes ear hooks 30 provided on or near the right side 21 and the left side 22 of the mask body 10 as attachment portions. Further, another attachment portion (not shown) may be provided on the back surface (face side surface) of the mask body 10, for example, and may be an adhesive portion that can be removed and attached to the face.

The present invention described above includes the following technical ideas.
(1) Has a mask body provided with a breathable sheet material,
The mask body has a plurality of folds having mountain folds folded along the lateral direction.
The left and right sides of the mask body are located on the ear side from the midpoint between the apex of the wearer's cheekbone and the medial end of the ear canal opening.
A mask characterized in that the horizontal dimension of the mask body is 2.7 times or more and 4.4 times or less with respect to the vertical dimension of the mask body.
(2) In the vicinity of the left and right sides of the mask body, a first joint is provided to maintain the shape of the folds, and a first joint is provided.
The mask according to (1) above, wherein a second joint for controlling the opening of at least a part of the folds is provided on the center side in the left-right direction of the first joint.
(3) At least three folds are formed on the mask body.
It has the second joint that controls the opening of the intermediate folds formed in the intermediate portion in the vertical direction, and also has the second joint.
It has at least one of an upper joint that controls the opening of the upper folds provided above the middle folds and a lower joint that controls the opening of the lower folds below the middle folds.
Seen laterally, the upper joint is located closer to the ear than the second joint, and the lower joint is located closer to the mouth than the second joint (2). The mask described in.
(4) Having the upper joint and the lower joint,
The first virtual connecting the first intermediate point, which is the half point in the length direction of the upper joint, and the second intermediate point, which is the second half point in the length direction of the lower joint. Lines and,
The mask according to (3) above, wherein the intersection angle θ of the first virtual line and the second virtual line extending in the vertical direction including the intersection where the second joint portion intersects is 30 degrees or more and 50 degrees or less. ..
(5) The mask according to (3) or (4) above, wherein the lower joint portion is formed so as to be inclined downward from the ear direction to the chin direction when the mask main body is viewed from the front.
(6) The mask body has at least four folds of the first fold, the second fold, the third fold, and the fourth fold from the upper side to the lower side.
On the cut surface formed by cutting the mask body along the vertical direction, a folded portion having a substantially Ω-shaped cross section is formed by the second fold and the third fold, and the mask body is formed.
The first fold is folded in the same direction as the second fold, and the fourth fold is folded in the same direction as the third fold according to any one of (1) to (5) above. The mask described.

10, 302 ... Mask body 12 ... Mountain fold 13 ... Valley fold 14 ... Fold 14a ... First fold 14b ... Second fold 14c ... Third fold 14d ...・ ・ Fourth folds 21, 305 ・ ・ ・ Right side 22, 306 ・ ・ ・ Left side 26 ・ ・ ・ Upper side 27 ・ ・ ・ Lower side 30, 304 ・ ・ ・ Ear hook 40 ・ ・ ・ First joint Part 42 ... Second joint 42x ... Intersection 44 ... Upper joint 44x ... First intermediate point 46 ... Lower joint 46x ... Second intermediate point 50 ... Folded part 51 ... Nose fitter 52 ... Nose fitter stopper 53 ... Upper side joint 53'... Lower side joint 54 ... Folded ends 100, 110, 300 ... Mask 200 ... Wearer 202 ・ ・ ・ Cheekbone apex 204 ・ ・ ・ Medial end of external auditory canal opening X ・ ・ ・ Horizontal dimension Y ・ ・ ・ Vertical dimension I ・ ・ ・ First virtual line II ・ ・ ・ Second virtual line θ ・ ・ ・ Crossing angle

Claims (6)

Has a mask body with a breathable sheet material,
The mask body has a plurality of folds having mountain folds folded along the lateral direction.
The left and right sides of the mask body are located on the ear side from the midpoint between the apex of the wearer's cheekbone and the medial end of the ear canal opening.
A mask characterized in that the horizontal dimension of the mask body is 2.7 times or more and 4.4 times or less with respect to the vertical dimension of the mask body. In the vicinity of the left and right sides of the mask body, a first joint is provided to maintain the shape of the folds, and a first joint is provided.
The mask according to claim 1, wherein a second joint for controlling the opening of at least a part of the folds is provided on the center side in the left-right direction of the first joint. At least three folds are formed on the mask body.
It has the second joint that controls the opening of the intermediate folds formed in the intermediate portion in the vertical direction, and also has the second joint.
It has at least one of an upper joint that controls the opening of the upper folds provided above the middle folds and a lower joint that controls the opening of the lower folds below the middle folds.
The second aspect of the present invention, wherein the upper joint portion is arranged on the ear side of the second joint portion and the lower joint portion is arranged on the mouth side of the second joint portion when viewed in the lateral direction. The mask described. It has the upper joint and the lower joint,
The first virtual connecting the first intermediate point, which is the half point in the length direction of the upper joint, and the second intermediate point, which is the second half point in the length direction of the lower joint. Lines and,
The mask according to claim 3, wherein the intersection angle θ of the first virtual line and the second virtual line extending in the vertical direction including the intersection where the second joint portion intersects is 30 degrees or more and 50 degrees or less. The mask according to claim 3 or 4, wherein the lower joint portion is formed so as to be inclined downward from the ear direction to the chin direction when the mask body is viewed from the front. The mask body has at least four folds, a first fold, a second fold, a third fold, and a fourth fold, from the top to the bottom.
On the cut surface formed by cutting the mask body along the vertical direction, a folded portion having a substantially Ω-shaped cross section is formed by the second fold and the third fold, and the mask body is formed.
The mask according to any one of 1 to 5, wherein the first fold is folded in the same direction as the second fold, and the fourth fold is folded in the same direction as the third fold.

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