JP2023072607A - disposable mask - Google Patents

Abstract

To provide a disposable mask which can be adjusted so that no gap is formed between an intermediate area in the lateral end of a mask body and a surface of the face in a mask having a plurality of pleats and no gap is formed between the lower end of the mask body and the surface of the face.SOLUTION: A disposable mask (1) comprises a mask body (3) made of a sheet, and a pair of ear hook parts (5) extending from both side edges in the lateral direction of the mask body. The mask body comprises a plurality of pleats (11) which is formed of the folded sheet parts, extends along the lateral direction, and is vertically spaced apart from each other, and a plurality of connecting parts 12 which is formed of part of the unfolded sheet parts and is located between the vertically adjacent pleats among the plurality of pleats. Each of the plurality of pleats has a joint (20) for fixing the sheets forming each of the plurality of pleats to each other at each of the lateral ends.SELECTED DRAWING: Figure 1

Description

The present invention relates to disposable masks.

Disposable masks are known that include a mask body and a pair of ear hooks, and the mask body has a plurality of folds (pleats) extending in the lateral direction and arranged at intervals in the vertical direction. When the disposable mask is worn, the central portions in the lateral direction of the plurality of pleats are vertically expanded, thereby forming a three-dimensional shape (cup) in the mask body. As such a mask, for example, Patent Document 1 describes a transverse center line that has a vertical direction and a width direction and bisects the dimension in the vertical direction, a mask body, and an annular shape from both side edges of the mask body. Disclosed is a disposable mask that includes a pair of extending ear hooks. In this disposable mask, the main body of the mask is formed of a sheet made of nonwoven fabric. and a sealing area intermittently extending vertically along the . The mouth covering portion has a folded portion composed of a folded portion of the sheet folded over, and a non-overlapped portion located between the folded portions in the vertical direction. The non-overlapping portion has a non-sealing area located below the transverse centerline. A wide joint portion formed by aligning a plurality of joint portions in the width direction is located in the fold portion located below the non-overlapping portion.

JP 2017-14673 A

In the mask of Patent Document 1, one end and the other end of each of the pair of ear hooks are connected to the upper and lower ends of one lateral end of the mask body, respectively. ing. When the mask is worn, the ear hooks are hung on the ears, so that the upper and lower ends of the lateral ends of the mask body are pulled up in the direction of the ears, and the lateral ends of the mask body are pulled up. is pressed against the surface of the face. This suppresses the formation of gaps between the lateral ends of the mask body and the surface of the face.

However, in the case of a person whose face is elongated and whose ears are positioned relatively low (near the chin) and forward (close to the nose), the lateral direction of the mask body It becomes difficult to pull up the lower end of the end in the direction of the ear with the ear hook. As a result, gaps may occur between the lower edges of the lateral edges of the mask body and the surface of the face.

In Patent Document 1, when the mask is worn, a part of the non-overlapping portion provided at one substantially central portion in the vertical direction is bent so as to be folded in the front-rear direction, so that the lower side extending downward from the non-overlapping portion A portion moves backwards to follow the surface of the wearer's face. This suppresses the formation of gaps between both ends of the mask body in the width direction and the surface of the face. However, if the wearer's face has the features described above, it is unlikely that the means of Patent Document 1 alone will create a gap between the lower edge of the lateral edge of the mask body and the surface of the face. still exists.

On the other hand, if you try to pull up the lower end in the lateral direction of the mask body in the direction of the ear only by devising the ear hook, it will be difficult to move between the mask body and the cheek, that is, the lateral end of the mask body. There is a risk that a gap may be formed between the intermediate region between the upper end and the lower end of the face and the surface of the face (cheek).

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mask having a plurality of folds at the lateral ends of the mask body while maintaining no gaps between the intermediate regions at the lateral ends of the mask body and the surface of the face. To provide a disposable mask which can be adjusted so as not to create a gap between the lower end of a face and the surface of the face.

The disposable mask of the present invention has a vertical direction, a horizontal direction and a thickness direction, and comprises a mask body made of a sheet and a pair of ear hooks extending from both side edges of the mask body in the horizontal direction. wherein the mask body is formed of a portion of the sheet that is folded over, extends along the lateral direction, and is not folded with a plurality of vertically spaced pleats. a plurality of connecting portions formed by a part of the sheet and positioned between the vertically adjacent folds of the plurality of folds, wherein each of the plurality of folds is connected to the lateral a disposable mask having a joint on each of its directional ends that secures together said sheets in each of said plurality of pleats.

According to the present invention, in a mask having a plurality of folds, the lateral ends of the mask body are folded while maintaining no gaps between the intermediate regions at the lateral ends of the mask body and the surface of the face. It is possible to provide a disposable mask that can be adjusted so that there is no gap between the lower end of the and the face surface.

It is a top view showing an example of composition of a disposable mask concerning an embodiment. FIG. 2 is a cross-sectional view along the vertical centerline of the disposable mask of FIG. 1; FIG. 3 is a partially enlarged view (cross-sectional view) of the folds and connecting portion of FIG. 2; FIG. 4 is a plan view showing a configuration example of a joint portion of the disposable mask according to the embodiment; FIG. 4 is a partial plan view showing a configuration example of the disposable mask according to the embodiment; It is a perspective view which shows the wearing example of the disposable mask which concerns on embodiment. FIG. 7 is a partial enlarged view (perspective view) showing a lateral end of the disposable mask of FIG. 6; FIG. 10 is a partially enlarged view (cross-sectional view) along the vertical centerline of a disposable mask according to another embodiment;

This embodiment relates to the following aspects.
[Aspect 1]
A disposable mask comprising a mask body having vertical, horizontal, and thickness directions and formed of a sheet, and a pair of ear hooks extending from both side edges of the mask body in the horizontal direction, The mask body is formed of a portion of the sheet that is folded over, and is formed of a plurality of folds extending along the lateral direction and arranged at intervals in the vertical direction, and a portion of the sheet that is not folded over. and a plurality of connecting portions positioned between the vertically adjacent folds of the plurality of folds, each of the plurality of folds being connected to each of the lateral ends. 10. A disposable mask, comprising a joint that secures the sheets together in each of the plurality of folds.

When wearing a mask with multiple folds (pleats), when the lateral center of the multiple folds is expanded vertically to form a three-dimensional shape on the mask body, the lateral direction of the multiple folds The ends move closer together. Therefore, in this disposable mask, connecting portions are provided between vertically adjacent folds. Since the connecting portion is formed of a portion of the sheet that is not folded, it has lower rigidity and is more likely to bend than the fold portion. Therefore, when forming a three-dimensional shape on the mask body, the plurality of low-rigidity connecting portions can be bent and folded over the adjacent folds. Thereby, the lateral ends of the plurality of folds can be brought closer together and some of them can be superimposed on the bent joints, so that the lateral ends of the mask body as a whole lie on the surface of the wearer's face. It can be easily deformed into a curved shape to follow. Therefore, it is possible to suppress the formation of a gap between the lower end portion and the surface of the face while maintaining the widthwise end portion of the mask body so as not to form a gap between the intermediate region and the surface of the face. .

[Aspect 2]
The disposable mask according to aspect 1, wherein the joint includes an inclined direction joint extending continuously or intermittently along a direction inclined with respect to the lateral direction and the vertical direction.
This disposable mask has the above configuration. Therefore, when the mask is worn, the horizontal central portions of the multiple folds are spread vertically, the horizontal ends are brought closer to each other, and the multiple connecting portions are bent and folded onto the adjacent folds. The joining portion can guide the direction of bending of the plurality of connecting portions and the direction of spreading of the plurality of folds in an appropriate direction. As a result, the lateral ends of the mask body can take on a curved shape along the surface of the face. Therefore, since the three-dimensional shape of the mask body can be easily formed and maintained, at the lateral ends of the mask body, while maintaining so as not to create a gap between the intermediate region and the surface of the face, the lower end can be It is possible to suppress the formation of a gap between the part and the surface of the face.

[Aspect 3]
The slanting direction joints are continuous or intermittent along the slanting direction slanted with respect to the lateral direction so as to go from the crest side to the trough side of the folds toward the outer side in the lateral direction. 3. The disposable mask according to aspect 2, wherein the disposable mask extends vertically.
This disposable mask has the above configuration. In other words, the slanting direction joints are along the slant direction inclined toward the widening direction of the folds in a direction that approaches the crest side from the valley side of the folds as it goes toward the laterally central portion. has been extended. Therefore, when the mask is worn, the horizontal central portions of the multiple folds are spread vertically, the horizontal ends are brought closer to each other, and the multiple connecting portions are bent and folded onto the adjacent folds. The joining portion can guide the bending directions of the plurality of connecting portions in an appropriate direction. As a result, it is possible to guide the direction in which the plurality of folds spread in an appropriate direction, and while maintaining the three-dimensional shape formed in the lateral center of the mask body, the lateral ends of the mask body are aligned with the face. It can take a curved shape along the surface. Therefore, since the three-dimensional shape of the mask body can be easily maintained, at the lateral ends of the mask body, while maintaining a gap between the intermediate region and the surface of the face, the lower end and the It is possible to suppress the formation of a gap between the surface of the face.

[Aspect 4]
The joint is a first lateral joint that is disposed at or near an end of the trough side of the fold in the oblique direction joint and extends continuously or intermittently along the lateral direction. 4. The disposable mask of aspect 3, further comprising a portion.
This disposable mask has the above configuration. Therefore, it is possible to increase the rigidity and shape stability at the lateral ends of the plurality of folds. Therefore, when the mask is worn, the lateral central portions of the plurality of folds are spread vertically, the lateral ends are brought closer to each other, and the plurality of connecting portions are bent and folded onto the adjacent folds. The lateral joints can suppress bending at the lateral ends of the plurality of folds. Thereby, the lateral ends of the mask body can maintain a curved shape along the surface of the face. Therefore, since the three-dimensional shape of the mask body can be easily maintained, at the lateral ends of the mask body, while maintaining a gap between the intermediate region and the surface of the face, the lower end and the It is possible to suppress the formation of a gap between the surface of the face.

[Aspect 5]
The joint is a second lateral joint that is disposed at or near the top end of the fold in the oblique joint and extends continuously or intermittently along the lateral direction. A disposable mask according to aspect 3 or 4, further comprising:
This disposable mask has the above configuration. Therefore, it is possible to increase the rigidity and shape stability at the lateral ends of the plurality of folds. Therefore, when the mask is worn, the lateral central portions of the plurality of folds are spread vertically, the lateral ends are brought closer to each other, and the plurality of connecting portions are bent and folded onto the adjacent folds. The horizontal joint can prevent the horizontal ends of the plurality of folds from floating in the thickness direction. Thereby, the lateral ends of the mask body can maintain a curved shape along the surface of the face. Therefore, since the three-dimensional shape of the mask body can be easily maintained, at the lateral ends of the mask body, while maintaining a gap between the intermediate region and the surface of the face, the lower end and the It is possible to suppress the formation of a gap between the surface of the face.

[Aspect 6]
6. The disposable mask according to any one of aspects 2 to 5, wherein the vertical length of the joint portion is 70 to 90% of the vertical length of each of the plurality of folds.
This disposable mask has the above configuration. Therefore, when the mask is worn, the joints guide the bending direction of the plurality of connecting portions and the direction in which the plurality of folds expand in an appropriate direction, while increasing the degree of freedom of deformation of the adjacent connecting portions. As a result, the lateral ends of the mask body can be easily formed into a curved shape along the surface of the face. Therefore, it is possible to suppress the formation of a gap between the lower end portion and the surface of the face while maintaining the widthwise end portion of the mask body so as not to form a gap between the intermediate region and the surface of the face. .

[Aspect 7]
7. The disposable according to any one of aspects 2 to 6, wherein the vertical end of the joint is separated from at least one of the crest of the fold and the valley of the fold in plan view. mask.
This disposable mask has the above configuration. Therefore, when the mask is worn, the area that bends together with the connecting portion can be widened in the folds as well. As a result, the degree of freedom of deformation of adjacent connecting portions can be increased while guiding the bending directions of the plurality of connecting portions and the expanding directions of the plurality of folds in appropriate directions. As a result, the lateral ends of the mask body can be easily formed into a curved shape along the surface of the face. Therefore, it is possible to suppress the formation of a gap between the lower end portion and the surface of the face while maintaining the widthwise end portion of the mask body so as not to form a gap between the intermediate region and the surface of the face. .

[Aspect 8]
8. The disposable mask according to any one of modes 1 to 7, wherein, in each of the plurality of connecting portions, the lowermost connecting portion in the vertical direction has a greater width in the vertical direction than the other connecting portions. .
This disposable mask has the above configuration. Therefore, when the plurality of connecting portions are bent and folded over the adjacent folds, the lower end portion of the lateral end portion of the mask body can be formed into a more curved shape. Therefore, the lateral ends of the mask body as a whole can take a curved shape along the surface of the wearer's face. As a result, at the lateral ends of the mask body, it is possible to prevent gaps from forming between the lower end and the surface of the face while maintaining the gap between the intermediate region and the surface of the face. can.

[Aspect 9]
The disposable mask according to mode 8, wherein each of the plurality of connecting parts has a width in the vertical direction that increases from the top to the bottom in the vertical direction.
This disposable mask has the above configuration. Therefore, when the plurality of connecting portions are bent and folded over to the adjacent folds, the central region of the lateral ends of the mask body can be more curved, and the lower end can be shaped to be even more curved. can be Therefore, the lateral ends of the mask body as a whole can take a curved shape along the surface of the wearer's face. As a result, at the lateral ends of the mask body, it is possible to prevent gaps from forming between the lower end and the surface of the face while maintaining the gap between the intermediate region and the surface of the face. can.

[Aspect 10]
10. The disposable mask according to any one of aspects 1 to 9, wherein the joint is formed by embossing.
This disposable mask has the above configuration. Therefore, it is difficult for the joined portion to come off, and therefore, the curved shape of the lateral end of the mask body can be stably maintained. As a result, at the lateral ends of the mask body, it is possible to prevent gaps from forming between the lower end and the surface of the face while maintaining the gap between the intermediate region and the surface of the face. can.

A disposable mask according to an embodiment will be described below with reference to the drawings.

1 and 2 are diagrams showing a configuration example of a disposable mask 1 (hereinafter also simply referred to as "mask 1") according to an embodiment. However, FIG. 1 is a plan view showing a configuration example of the mask 1, and FIG. 2 is a cross-sectional view along the vertical center line CV in FIG.

The mask 1 has a vertical direction V, a horizontal direction H, and a thickness direction T which are orthogonal to each other, and includes a mask body 3 and a pair of ear hooks 5 extending from both side edges of the mask body 3 in the horizontal direction H. ing. In addition, the mask 1 has a vertical center line CV passing through the center of the mask body 3 in the horizontal direction H and extending in the vertical direction V, and a horizontal center line CV passing through the center of the mask body 3 in the vertical direction V and extending in the horizontal direction H. It has a line CH. The direction and side toward the vertical center line CV are also called "inward" and "inward" in the horizontal direction H, respectively, and the direction and side away from it are also called "outward" and "outside" in the horizontal direction H, respectively. On the other hand, the direction and side toward the lateral center line CH are also called “inward” and “inward” in the vertical direction V, respectively, and the direction and side away from it are also called “outward” and “outside” in the vertical direction V, respectively. When the mask 1 is worn, the sides relatively close to and far from the skin surface of the wearer in the thickness direction T of the mask 1 are referred to as "skin side" and "non-skin side", respectively. Viewing the mask 1 from above (non-skin side) in the thickness direction T is called "plan view", and the shape grasped in plan view is called "planar shape", and a plane including the vertical direction V and the horizontal direction H An arbitrary direction in the plane is called an “in-plane direction”. "Along" the vertical direction V or the horizontal direction H includes directions within a range of ±30° (preferably 15°) with respect to the vertical direction V or the horizontal direction H. "End" of a certain member or the like in a certain direction (example: vertical direction V, horizontal direction H) is 1/8 of the total length in that direction from the edge of the member or the like in that direction ( It preferably refers to a range of dimensions of 1/10). For example, the end of the mask body 3 in the horizontal direction H (horizontal direction end) is ⅛ (preferably refers to the width range of 1/10). Positioning on the relatively upper side (nose fit side)/lower side of the mask body is also referred to as "positioning on the upper side/lower side in the vertical direction V".

The mask body 3 is formed of a sheet 30. As shown in FIG. In the present embodiment, in a plan view, it has a substantially rectangular shape (with rounded corners), which is axisymmetric with respect to the vertical center line CV, is short in the vertical direction V, and is long in the horizontal direction H. . However, the shape of the mask body 3 is not limited to this example as long as it can cover the nose and mouth. Polygonal shapes, combinations thereof, and the like.

The mask body 3 has a plurality of folds 11 extending in the horizontal direction H and arranged in the vertical direction V at intervals. Therefore, the mask body 3 has a pleated structure in which a plurality of folds 11 are arranged. In the present embodiment, the plurality of folds 11 are positioned above the vertical direction V, and the folds 11a and 11b are positioned upward in the vertical direction V, and the folds 11a and 11b are positioned below the vertical direction V. V-downward facing folds 11c, 11d. Therefore, the mask main body 3 has an Ω-type structure that shows a shape of approximately Ω when viewed from the horizontal direction H. As shown in FIG. As a result, when the mask 1 is worn, the central portions in the horizontal direction H of the folds 11a and 11b facing upward and the folds 11c and 11d facing downward are expanded in the vertical direction V and deformed into a bellows shape. A three-dimensional shape (cup) can be formed between the mask body 3 and the wearer. However, each of the plurality of folds 11 is formed by partially folding the sheet 30 .

The mask body 3 includes a plurality of connecting portions 12 positioned between adjacent folds 11 of the plurality of folds 11 in the vertical direction V. As shown in FIG. The plurality of connecting portions 12 extend along the horizontal direction H and are arranged in the vertical direction V at intervals. In this embodiment, the plurality of connecting portions 12 includes connecting portions 12a positioned between adjacent folds 11a and 11b and connecting portions 12a positioned between adjacent folds 11b and 11c. It includes a portion 12b and a connecting portion 12c positioned between adjacent folds 11c and 11d. However, each of the plurality of connecting portions 12 is formed in a state in which a portion of the sheet 30 is not folded. Therefore, compared to the folds 11 in which the sheet 30 is folded, the connecting portion 12 in which the sheet 30 is not folded has a lower rigidity and is easily deformed such as bending.

FIG. 3 is a partially enlarged view (cross-sectional view) of the folds 11 and the connecting portion 12 of FIG. In this embodiment, the folds 11 have the following configuration in detail. The fold portion 11a includes a base material 31a on the skin side in the thickness direction T and folds 32a on the non-skin side in the thickness direction T. As shown in FIG. The fold 32a includes a first portion 33a on the skin side in the thickness direction T and a second portion 34a on the non-skin side in the thickness direction T. As shown in FIG. In the fold portion 11a, the lower end portion of the base material 31a in the vertical direction V and the lower end portion of the first portion 33a in the vertical direction V are connected by the valley portion Va. The upper end portion and the upper end portion of the second portion 34a in the vertical direction V are connected at the top portion Ta.

Similarly, the fold portion 11b includes a base material 31b on the skin side in the thickness direction T and folds 32b on the non-skin side in the thickness direction T. As shown in FIG. The fold 32b includes a first portion 33b on the skin side in the thickness direction T and a second portion 34b on the non-skin side in the thickness direction T. As shown in FIG. In the fold portion 11b, the lower end portion of the base material 31b in the vertical direction V and the lower end portion of the first portion 33b in the vertical direction V are connected by the valley portion Vb. The upper end portion and the upper end portion of the second portion 34b in the vertical direction V are connected at the top portion Tb.

Similarly, the fold portion 11c includes a base material 31c on the skin side in the thickness direction T and folds 32c on the non-skin side in the thickness direction T. As shown in FIG. The fold 32c includes a first portion 33c on the skin side in the thickness direction T and a second portion 34c on the non-skin side in the thickness direction T. As shown in FIG. In the fold portion 11c, the upper end portion of the base material 31c in the vertical direction V and the upper end portion of the first portion 33c in the vertical direction V are connected by the valley portion Vc. The end portion and the lower end portion in the vertical direction V of the second portion 34c are connected at the top portion Tc.

Similarly, the fold portion 11d includes a substrate 31d on the skin side in the thickness direction T and folds 32d on the non-skin side in the thickness direction T. As shown in FIG. The fold 32d includes a first portion 33d on the skin side in the thickness direction T and a second portion 34d on the non-skin side in the thickness direction T. In the fold portion 11d, the upper end portion of the base material 31d in the vertical direction V and the upper end portion of the first portion 33d in the vertical direction V are connected by a valley portion Vd, and the lower portion of the first portion 33d in the vertical direction V is connected to the upper end portion of the first portion 33d in the vertical direction V. The end portion and the lower end portion in the vertical direction V of the second portion 34d are connected at the top portion Td.

In this embodiment, the widths D11a, D11b, D11c, and D11d in the vertical direction V of the folds 11a, 11b and the folds 11c, 11d are the same length. However, the relationship of their widths is not particularly limited, and at least one may be different from the others.

On the other hand, in this embodiment, the connection part 12 has the following structure in detail. The connecting portion 12a has an upper end in the vertical direction V connected to a lower end in the vertical direction V of the second portion 34a of the fold portion 11a, and a lower end portion connected to the top and bottom of the base material 31b of the fold portion 11b. It is connected to the upper end in direction V.

Similarly, the connecting portion 12b has an upper end in the vertical direction V connected to a lower end in the vertical direction V of the second portion 34b of the fold portion 11b, and a lower end to the second portion of the fold portion 11c. It is connected to the upper end in the vertical direction V of the portion 34c.

Similarly, the connecting portion 12c is connected at its upper end in the vertical direction V to the lower end in the vertical direction V of the base material 31c of the fold 11c, and is connected at its lower end to the second portion of the fold 11d. 34d is connected to the upper end in the vertical direction V.

In each of the plurality of connecting portions 12 , the width of the relatively lower connecting portion 12 in the vertical direction V is preferably the same as or larger than the width of the relatively upper connecting portion 12 . That is, widths d12a, d12b, and d12c in the vertical direction V of the connecting portions 12a, 12b, and 12c satisfy d12a≦d12b≦d12c. As a more preferable aspect, at least the width of the lowermost connecting portion 12 is larger than the width of the other connecting portions 12 . That is, d12a≦d12b<d12c. In this embodiment, as a more preferable mode, the width of the connecting portion 12 is made larger from the upper side to the lower side in the vertical direction V. As shown in FIG. That is, d12a<d12b<d12c. Specifically, for example, d12a, d12b, d12c=2 mm, 3 mm, 4 mm. However, if at least d12c is 2 mm or more, d12a and d12b may be 0 mm or less. As a result, as will be described later, it becomes easier to spread the mask body 3 downward in the vertical direction V when wearing the mask. However, the relationship of those widths is not particularly limited.

Furthermore, as shown in FIG. 1, each of the plurality of folds 11 has joints 20 at both ends in the horizontal direction H for fixing the sheets 30 of each of the plurality of folds 11 to each other. there is The joint portion 20 is formed by, for example, a method such as embossing, thermal fusion using ultrasonic waves, or adhesion using an adhesive. In this embodiment, the joints 20 include joints 20a, 20b, 20c, and 20d provided at both ends in the horizontal direction H of the folds 11a, 11b and the folds 11c, 11d. The joining portion 20a joins the base material 31a, the first portion 33a, and the second portion 34a of the fold portion 11a in the thickness direction T to each other. The joining portion 20b joins the base material 31b, the first portion 33b, and the second portion 34b of the fold portion 11b in the thickness direction T to each other. The joining portion 20c joins the base material 31c, the first portion 33c, and the second portion 34c of the fold portion 11c in the thickness direction T to each other. The joining portion 20d joins the base material 31d, the first portion 33d, and the second portion 34d of the fold portion 11d in the thickness direction T to each other. In this embodiment, the joints 20a, 20b, 20c, and 20d are formed by embossing while holding the second portion, the first portion, and the base material.

On the other hand, the connecting portion 12 is formed of a sheet 30 that is not folded (although formed of the sheet 30, the sheet 30 that forms the connecting portion 12 is not folded). Therefore, the connecting portion 12 does not have the joint portion 20 . Therefore, at both ends of the mask body 3 in the horizontal direction H, the folds 11 where the sheet 30 is folded and the joints 20 are formed have high rigidity, the sheet 30 is not folded, and the joints 20 The rigidity of the connecting portion 12 where is not formed is low. Therefore, the connecting portion 12 can be deformed such as bending more easily than the fold portion 11 .

FIG.4 and FIG.5 is a figure which shows the structural example of the junction part 20 of the mask 1 which concerns on embodiment. However, FIG. 4 is a plan view showing a configuration example of the joint 20, and shows the joint 20c of the joints 20a, 20b, 20c, and 20d for reference. However, the configuration is the same for the joints 20a, 20b, and 20d, except that the orientation is partially different. FIG. 5 is a partial plan view showing a configuration example of the mask 1. FIG.

In this embodiment, the joint 20 has the following configuration in detail. The joint portion 20 includes an inclined direction joint portion 22 extending continuously or intermittently along a direction inclined with respect to the horizontal direction H and the vertical direction V. As shown in FIG. However, "continuously extending" means that the joints 20 are provided in a linear or strip-like manner, and "intermittently extending" means that the joints 20 are formed into a plurality of small portions. It indicates that the joints are arranged in a discontinuous manner. The shape of the small joints is not particularly limited, and examples thereof include circles, ovals, squares, rhombuses, and other polygonal shapes.

The joint 20 preferably comprises an oblique joint 22 . The inclined-direction joint portion 22 extends from the top portion Tx (examples: Ta, Tb, Tc, Td) of the fold portion 11 to the valley portion Vx toward the outer side of the horizontal direction H (the direction of the edge 3E of the mask body 3). (Example: Va, Vb, Vc, Vd), it extends continuously or intermittently along an inclination direction inclined (by angle θ) with respect to the horizontal direction H. In other words, the inclined joint portion 22 is arranged in a direction that approaches the crest portion Tx side from the valley portion Vx side of the fold portion 11 toward the central portion in the lateral direction H (vertical center line CV). It extends along the inclination direction inclined toward the direction P in which the portion 11 spreads. Therefore, when the ends of the plurality of folds 11 in the horizontal direction H gather at the central portion in the vertical direction V, the sheet 30 of the connection portion 12 having weak rigidity or the sheet 30 of the adjacent folds 11 (example: base material 31a) , 31b, 31c, and 31d) can be easily bent along the tilt direction of the tilt direction joint portion 22 having high rigidity.

The joint portion 20 is preferably arranged at or near the end portion of the trough portion Vx side of the fold portion 11 in the inclined direction joint portion 22, and extends continuously or intermittently along the horizontal direction H. It further includes one lateral joint 21 . Therefore, the rigidity and shape stability of the ends of the folds 11 in the horizontal direction H can be enhanced. As a result, the ends of the plurality of folds 11 in the horizontal direction H are gathered at the central portion in the vertical direction V, and when the plurality of connecting portions 12 are bent, the ends of the plurality of folds 11 in the horizontal direction H are bent. can be suppressed.

The joint portion 20 is preferably arranged at or near the end of the apex Tx side of the fold portion 11 in the inclined direction joint portion 22, and extends continuously or intermittently along the horizontal direction H. It further includes lateral joints 23 . Therefore, the rigidity and shape stability of the ends of the folds 11 in the horizontal direction H can be enhanced. As a result, when the ends of the plurality of folds 11 in the lateral direction H gather at the center in the vertical direction V, and the plurality of connecting portions 12 bend, the valleys Vx of the plurality of folds 11 are aligned with the base material (example: 31a, 31b, 31c, 31d).

The positions of the first lateral joint 21 and the second lateral joint 23 in the lateral direction H may be the same, but the second lateral joint 23 on the side of the top Tx is positioned laterally. It is preferable that it is closer to the inner side of H (vertical center line CV side). As a result, the first lateral joint portion 21, the inclined joint portion 22, and the second lateral joint portion 23 form the joint portion 20 inclined in the inclined direction as a whole, and the effect of the inclined direction joint portion 22 is exhibited more effectively. be able to.

In this embodiment, the oblique-direction joints 22 are circular fusion-bonded portions 21a, 22a, 22b, and 23b arranged at intervals in the oblique direction inclined at an angle θ with respect to the lateral direction H. is. The first lateral joints 21 are circular fusion-bonded parts 21a and 21b arranged substantially parallel to the lateral direction H at the ends of the folds 11 on the valley Vx side with a gap therebetween. The second lateral joints 23 are circular fusion-bonded parts 23a and 23b arranged substantially parallel to the lateral direction H at the ends of the folds 11 on the top Tx side at intervals. Note that the fused portion 21 a is used both as the oblique direction joint portion 22 and the first horizontal direction joint portion 21 , and the fused portion 23 b is used as both the oblique direction joint portion 22 and the second lateral direction joint portion 23 . However, the fused portions may not be used in common, and independent fused portions may be provided separately.

In the folds 11a and 11b facing upward in the vertical direction V, the first horizontal joint 21, the inclined joint 22, and the second horizontal joint 23 are sequentially arranged from the lower side to the upper side in the vertical direction V. That is, they are arranged from the valleys Va, Vb toward the tops Ta, Tb. At this time, the second lateral joints 23 on the sides of the tops Ta and Tb are arranged closer to the inside in the lateral direction H (the side of the vertical center line CV). On the other hand, in the folds 11c and 11d facing downward in the vertical direction V, the first horizontal joint 21, the inclined joint 22, and the second horizontal joint 23 are arranged from the upper side to the lower side in the vertical direction V. They are arranged in order, ie from the valleys Vc, Vd to the tops Tc, Td. At that time, the second lateral joints 23 on the sides of the tops Tc and Td are arranged closer to the inside in the lateral direction H (the side of the vertical center line CV).

The length in the vertical direction V of the joint portion 20 is preferably 70 to 90% of the length in the vertical direction V of each of the plurality of folds 11 . To increase the degree of freedom of deformation of adjacent connecting portions 12 while guiding the bending direction of a plurality of adjacent connecting portions 12 and the expanding direction of a plurality of folds 11 in an appropriate direction (70% or more) when wearing a mask. (90% or less). Moreover, it is preferable that the end portion of the joint portion 20 in the vertical direction V is separated from at least one of the top portion Tx of the fold portion 11 and the valley portion Vx of the fold portion 11 in plan view. Therefore, when the mask is worn, the area that bends together with the connecting portion 12 can be widened in the folds 11 as well.

FIG. 6 is a perspective view showing a wearing example of the mask 1 according to the embodiment, and FIG. 7 is a partially enlarged view (perspective view) showing a lateral end portion of the mask 1 of FIG.

When the mask 1 having a plurality of folds 11 (11a to 11d) is worn, the central portions of the folds 11 in the horizontal direction H are expanded in the vertical direction V to give the mask body 3 a three-dimensional shape (cup). to form At that time, the ends of the plurality of folds 11 in the horizontal direction H move toward each other, contrary to the central portion. In other words, with the joint 20 as a fulcrum, the central portions of the plurality of folds 11 in the horizontal direction H are expanded in the vertical direction V, and the ends of the plurality of folds 11 in the horizontal direction H approach each other. Here, in the mask 1, connecting portions 12 (12a to 12c) are provided between the folds 11 adjacent to each other in the vertical direction V. As shown in FIG. Since the connecting part 12 is formed of a part of the sheet 30 that is not folded, it has lower rigidity and is more easily bent than the fold part 11 that is formed of a part of the folded sheet 30. - 特許庁Therefore, when forming a three-dimensional shape on the mask body 3, the plurality of low-rigidity connecting portions 12 are bent to form bent portions 15 (15a to 15c) so that the adjacent folds 11 Can be folded. As a result, the ends of the plurality of folds 11 in the lateral direction H can reasonably approach each other without colliding with each other or being deformed.

However, in the example of FIG. 7, the bent portion 15a of the bent portion 15 is formed by folding the connecting portion 12a and a portion of the fold portion 11a and/or the fold portion 11b (the second portion 34a and a portion of the base material 31b). formed by The bent portion 15b is formed by folding the connecting portion 12b and part of the folds 11b and/or the folds 11c (parts of the second portions 34b and 34c). The bent portion 15c is formed by folding the connecting portion 12c and a portion of the fold portion 11c and/or the fold portion 11d (a portion of the base material 31c and the second portion 34d).

As a result, the ends in the lateral direction H of the plurality of folds 11 can be brought closer to each other, and some of them can be overlapped at the bent portions 15, so that the ends in the lateral direction H of the mask body 3 can be worn as a whole. It can be easily deformed into a curved shape along the surface of a person's face. Therefore, at the end of the mask body 3 in the horizontal direction H, while maintaining a gap between the middle region of the mask body 3 in the vertical direction V and the surface of the face, the lower end and the surface of the face are maintained. It is possible to suppress the occurrence of a gap between.

As a preferred aspect of this embodiment, the joint portion 20 includes an inclined direction joint portion 22 extending continuously or intermittently along a direction inclined with respect to the horizontal direction H and the vertical direction V. As shown in FIG. Here, in the mask 1, when the mask is worn, the central portions of the plurality of folds 11 in the horizontal direction H are expanded in the vertical direction V, so that the ends in the horizontal direction H are brought closer to each other, and the plurality of connecting portions 12 are connected. It is bent and folded over on the adjacent folds 11 . At this time, the direction of bending of the plurality of connecting portions 12 and the direction of spreading of the plurality of folds 11 can be appropriately guided by the inclined direction joint portions 22 . As a result, the end of the mask body 3 in the horizontal direction H can take a curved shape along the surface of the face.

As a preferred aspect of the present embodiment, the inclined direction joint portion 22 extends from the top portion Tx (Ta, Tb, Tc, Td) side of the fold portion 11 to the valley portion Vx (Va, Vb, Vc, Vd), it extends continuously or intermittently along the direction of inclination (by angle θ) with respect to the horizontal direction H. In other words, the inclined direction joint portion 22 is arranged in a direction that approaches the crest portion Tx side from the valley portion Vx side of the fold portion 11 toward the central portion in the lateral direction H. 11 extends along the direction of inclination (by the angle θ) toward the direction in which it expands. Therefore, when the plurality of connecting portions 12 are bent and folded onto the adjacent folds 11 when the mask is worn, the bending direction of the plurality of connecting portions 12 can be guided in an appropriate direction by the inclined direction joint portion 22. . In other words, the direction of the folding line due to the bending of the sheet 30 at the bent portions 15 (15a to 15c) can be guided substantially along the inclined direction joint portion 22. FIG. For example, as shown in FIG. 7, the bent portion 15a is formed with a fold line along the direction of the inclination direction joint portion 22 of the fold portion 11a and the fold portion 11b, and the bent portion 15c is formed with the inclination of the fold portion 11c and the fold portion 11d. A folding line is formed along the direction of the directional joint 22 . As a result, the direction in which the plurality of folds 11 spread can be guided in an appropriate direction, and the three-dimensional shape formed at the central portion of the mask body 3 in the lateral direction H can be maintained while maintaining the shape in the lateral direction of the mask body 3 . The end of H can take a curved shape along the surface of the face.

As a preferred aspect of the present embodiment, the joint 20 is arranged at or near the end of the trough Vx side of the fold 11 in the inclined direction joint 22, and continuously or intermittently along the lateral direction H. It further includes an extended first lateral joint 21 . Therefore, the rigidity and shape stability at the ends of the plurality of folds 11 in the lateral direction H can be enhanced. Therefore, when the plurality of connecting portions 12 are bent and folded onto the adjacent folds 11 when the mask is worn, the first lateral joining portion 21 allows the ends of the plurality of folds 11 in the lateral direction H to be bent. can be suppressed. As a result, the edge of the mask body 3 in the horizontal direction H can maintain a curved shape along the surface of the face.

As a preferred aspect of the present embodiment, the joint portion 20 is arranged at or near the end portion of the apex Tx side of the fold portion 11 in the inclined direction joint portion 22, and extends continuously or intermittently along the lateral direction H. It further includes a second lateral joint 23 provided. Therefore, the rigidity and shape stability at the ends of the plurality of folds 11 in the lateral direction H can be enhanced. Therefore, when the mask is worn, when the plurality of connecting portions 12 are bent and folded onto the adjacent folds 11, the second lateral joining portion 23 allows the ends of the plurality of folds 11 in the lateral direction H to extend in the thickness direction. Floating to T can be suppressed. As a result, the lateral ends of the mask body 3 can maintain a curved shape along the surface of the face.

As a preferred aspect of this embodiment, the length in the vertical direction V of the joint portion 20 is 70 to 90% of the length in the vertical direction V of each of the plurality of folds 11 . Therefore, when the mask is worn, the bonding portion 20 guides the bending direction of the plurality of connecting portions 12 and the expanding direction of the plurality of folds 11 in an appropriate direction (70% or more), while reducing the deformation of the adjacent connecting portions 12. The degree of freedom can be increased (90% or less). As a result, the edge of the mask main body 3 in the horizontal direction H can be easily formed into a curved shape along the surface of the face.

As a preferred aspect of the present embodiment, the end portion of the joint portion 20 in the vertical direction V is separated from at least one of the top portion Tx of the fold portion 11 and the valley portion Vx of the fold portion 11 in plan view. Therefore, when the mask is worn, the area that bends together with the connecting portion 12 can be widened in the folds 11 as well. As a result, the bending direction of the plurality of connecting portions 12 and the expanding direction of the plurality of folds 11 can be appropriately guided, and the degree of freedom of deformation of the adjacent connecting portions 12 can be increased. As a result, the edge of the mask main body 3 in the horizontal direction H can be easily formed into a curved shape along the surface of the face.

As a preferred aspect of the present embodiment, each of the plurality of connecting portions 12 has a lowermost connecting portion 12c in the vertical direction V that has a larger width in the vertical direction V than the other connecting portions 12a and 12b (d12c> d12a, d12b). Therefore, when the mask is worn, the lower portion in the vertical direction V of the central portion in the horizontal direction H of the mask main body 3 can be expanded downward in the vertical direction V further. Correspondingly, at the end of the mask body 3 in the lateral direction H, when the connecting portions 12 are bent and folded over the adjacent folds 11, the lower end can be made more curved. . Therefore, the end of the mask main body 3 in the horizontal direction H can take a curved shape as a whole so as to follow the surface of the wearer's face.

As a preferred aspect of the present embodiment, the width in the vertical direction V of each of the plurality of connecting portions 12 increases from the top in the vertical direction V toward the bottom. Therefore, when the mask is worn, the central portion of the mask body 3 in the lateral direction H can be spread downward in the vertical direction V further. Correspondingly, at the end of the mask body 3 in the lateral direction H, when the plurality of connecting portions 12 are bent and folded over the adjacent folds 11, the lower end can be formed into an even more curved shape. can. Therefore, the end of the mask main body 3 in the horizontal direction H can take a curved shape as a whole so as to follow the surface of the wearer's face.

As a preferred aspect of this embodiment, the joint 20 is formed by embossing. Therefore, the joining portion 20 is difficult to come off, and therefore the curved shape of the end portion in the horizontal direction H of the mask main body 3 can be stably maintained. As a result, it is possible to stably suppress the occurrence of a gap between the lower end of the mask body 3 in the horizontal direction H and the surface of the face.

In this embodiment, as shown in FIG. 1, the mask body 3 further includes a nose fit member 41 at a portion corresponding to the nose when worn. The nose fit member 41 is sandwiched between the folded non-skin side and skin side sheets 30 at the upper end of the mask body 3 in the vertical direction V, and is held by being surrounded by a joint 42. .

In the present embodiment, each of the pair of ear hooks 5 is fused to the outer surface of each of both ends in the horizontal direction H and both ends in the vertical direction V of the mask body 3 at the fused portions 43 . The fused portion 43 is formed by, for example, a method of fusing the ear hook portion 5 and the mask body 3 with heat or ultrasonic waves. In another embodiment, each of the pair of ear hooking portions 5 is fused to the inner surface of each of both side portions in the lateral direction H of the mask body 3 and both end portions in the vertical direction V at the fused portions 43. ing.

In this embodiment, the mask body 3 is formed by folding the sheet 30 . The sheet 30 includes, although not shown, an inner sheet positioned on the inner side, i.e., on the skin side when worn, an outer sheet positioned on the outer side, i.e., on the non-skin side when worn, and a filter sheet positioned between the inner and outer sheets. and Note that in another embodiment, the mask body 3 comprises two or more filter sheets. In yet another embodiment, the mask body 3 is made entirely of one or two sheets.

The inner sheet, the filter sheet, and the outer sheet are positioned at both ends of the mask body 3 in the vertical direction V, and have a plurality of joints 42 and 44 arranged along the horizontal direction H, are fused together by a plurality of joints 20 arranged at The shape of the joints 42, 44, 20 is small circular or elliptical. However, the shape of the joints 42 and 44 is not particularly limited, and examples thereof include dot shapes, polygonal shapes, pattern shapes, and combinations thereof. The joints 42, 44, 20 are formed by thermally or ultrasonically fusing the inner sheet, the filter sheet and the outer sheet.

In this embodiment, the inner sheet and the outer sheet hold the filter sheet from both sides in the thickness direction and maintain the shape of the mask body 3 . From the viewpoint of their functions, the inner sheet and the outer sheet preferably have higher air permeability and higher rigidity than the filter sheet. As for the inner sheet, it is preferable that it has a better texture. The basis weight of the inner sheet and the outer sheet is, for example, 10 to 100 g/m ² . On the other hand, when a gas such as air circulates through the filter sheet, the filter sheet contains viruses, bacteria, dust, pollen, or fine particulate matter (PM2.5) that tries to pass through the filter sheet along with the gas. Capture and collect small substances (hereinafter also simply referred to as “micro substances”). The basis weight of the filter sheet is, for example, 10 to 200 g/m ² .

Materials for the inner sheet, outer sheet and filter sheet include, for example, non-woven fabric. Nonwovens include, for example, spunlaced nonwovens, air-through nonwovens, spunbonded nonwovens, air-laid nonwovens, meltblown nonwovens, flash-spun nonwovens, thermal-bonded nonwovens, carded nonwovens, or some combination thereof. Fibers constituting the nonwoven fabric are not particularly limited as long as they can be melted by heat or ultrasonic waves to form a film. Examples of such fibers include synthetic resin fibers (examples: polyethylene, polypropylene, polybutylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ionomer resin, etc.). polyolefins; polyesters such as polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate and polylactic acid; polyamides such as nylon, etc.). In addition, natural fibers (examples: wool, cotton) and regenerated fibers (examples: rayon, acetate) may be partly included. The fibers constituting the nonwoven fabric may be composed of a single component, or may be composed of composite fibers such as core-sheath type fibers, side-by-side type fibers, and island/sea type fibers. A single-layer nonwoven fabric may be used, or a laminate (example: SMS nonwoven fabric) in which single-layer nonwoven fabrics are laminated may be used.

As a material for the filter sheet, it is preferable that the filter sheet has a higher micro-substance trapping performance than the inner sheet and the outer sheet. In this embodiment, for example, an electret nonwoven fabric can be used as the material of the filter sheet. Electretized nonwoven fabric can capture and collect minute substances in gas by electrostatic force. Such a nonwoven fabric is obtained by subjecting the nonwoven fabric to an electret treatment. The non-woven material to be electretized is preferably a non-polar polymer such as polypropylene, polyethylene, polystyrene, or combinations thereof.

Moreover, the fiber density of the filter sheet is preferably higher than the fiber densities of the inner sheet and the outer sheet from the viewpoint of trapping minute substances. The fiber density of the filter sheet is, for example, 0.03-0.20 g/cm ³ , preferably 0.05-0.10 g/cm ³ . If the fiber density of the filter sheet is too high, the electret treatment may not reach the inside of the filter sheet because the fibers may interfere with the formation of an electric field in the filter sheet by the electret treatment. On the other hand, if the fiber density of the filter sheet is too high, the flow of gas is obstructed, making it difficult for the gas to pass through the filter sheet, and there is a risk that the ventilation performance of the filter sheet will be reduced. On the other hand, if the fiber density is too low, the number of fibers that capture minute substances is too small, and there is a risk that the capturing performance will deteriorate.

The material of the ear hook portion 5 is not particularly limited as long as it can be worn on the wearer's ear, and examples thereof include elastic members such as round rubber with a circular cross section and flat rubber with a rectangular cross section. Examples of the elastic member include woven rubber or knitted rubber formed by weaving or knitting synthetic resin fibers (fibers having stretchability are also acceptable). Woven rubber is used in this embodiment. The width of the woven rubber does not change even if it is stretched. Since the ear hooking part 5 does not become thin when worn on the ear, the woven rubber can sufficiently secure the area of the part that contacts the ear of the wearer, and the wearing comfort of the mask 1 can be improved. Therefore, the mask 1 can properly exhibit its original function and can be worn for a long time.

In this embodiment, the plurality of folds 11 include folds 11a and 11b facing upward and folds 11c and 11d facing downward. However, the present invention is not limited to this example, and the orientation and number of folds 11 may be different. For example, the number of folds 11 facing upwards and the number of folds 11 facing downwards may be different. However, in that case, at the end of the mask main body 3 in the horizontal direction H, the folds 11 facing downward are arranged from the viewpoint of easily suppressing the formation of a gap between the lower end and the surface of the face. More is better.

FIG. 8 is a partially enlarged view (cross section) along the vertical centerline of a disposable mask according to another embodiment. In the example of the mask body 3 of this another embodiment, the plurality of folds 11 are arranged such that the plurality of folds 11a, 11b, 11c, and 11d all face upward, and the plurality of folds located between the adjacent folds 11. It includes connecting portions 12a, 12b, 12c. These and other configurations are as described in the above embodiments. In yet another embodiment, the plurality of folds 11 may include a plurality of folds all facing downward and a plurality of connecting portions located between adjacent folds.

The disposable mask of the present invention is not limited to the above-described embodiments, and is a combination or combination using the techniques of the embodiments or known techniques in the technical field within the scope of the purpose and spirit of the present invention. Substitution and the like are possible.

Reference Signs List 1 (disposable) mask 3 Mask body 5 Ear hook 11 Folds 12 Connecting part 20 Joining part

Claims (10)

A disposable mask comprising a mask body having vertical, horizontal, and thickness directions and formed of a sheet, and a pair of ear hooks extending from both side edges of the mask body in the horizontal direction,
The mask body is
a plurality of folds formed by part of the folded sheet, extending along the lateral direction, and spaced apart in the vertical direction;
a plurality of connecting portions formed of a portion of the sheet that is not folded and positioned between the vertically adjacent folds of the plurality of folds;
with
Each of the plurality of folds has joints at each of the lateral ends thereof for fixing the sheets in each of the plurality of folds to each other,
disposable mask. The junction is
An inclined direction joint extending continuously or intermittently along a direction inclined with respect to the lateral direction and the vertical direction,
A disposable mask according to claim 1. The slanting direction joints are continuous or intermittent along the slanting direction slanted with respect to the lateral direction so as to go from the crest side to the trough side of the folds toward the outer side in the lateral direction. is extended,
A disposable mask according to claim 2. The junction is
Further comprising a first lateral joint disposed at or near an end on the valley side of the fold in the inclined joint and extending continuously or intermittently along the lateral direction,
A disposable mask according to claim 3. The junction is
Further comprising a second lateral joint disposed at or near an end on the top side of the fold in the oblique direction joint and extending continuously or intermittently along the lateral direction;
A disposable mask according to claim 3 or 4. The vertical length of the joint is 70 to 90% of the vertical length of each of the plurality of folds,
6. A disposable mask according to any one of claims 2-5. The vertical end of the joint is spaced from at least one of the crest of the fold and the valley of the fold in a plan view,
7. A disposable mask according to any one of claims 2-6. In each of the plurality of connecting portions, the lowermost connecting portion in the vertical direction has a larger width in the vertical direction than the other connecting portions.
8. A disposable mask according to any one of claims 1-7. Each of the plurality of connecting portions has a width in the vertical direction that increases from the top to the bottom in the vertical direction.
A disposable mask according to claim 8. The joint is formed by embossing,
10. A disposable mask according to any one of claims 1-9.

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