JP5837252B1 - Disposable mask - Google Patents

Abstract

Disclosed is a disposable mask that can suppress deformation of a mask body, can exhibit a curved shape along a face shape, and can give a clean impression. A mask main body 20 is formed from a sheet 21 made of nonwoven fabric, and the upper and lower end portions 22 and 23 where the base end portions 31 of the pair of ear hook portions 30 are located between the upper and lower end portions 22 and 23. It has the mouth cover part 24 located, and the seal area | region 44 where the some junction part 41 arrange | positioned intermittently to the up-down direction Y along the both-sides edges 20c and 20d is arrange | positioned. The mouth covering portion 24 has a flange portion 28 formed of a superimposed portion 29A in which the sheet 21 is folded, and a non-overlapping portion 29B positioned between the flange portions 28 in the vertical direction Y. A wide joint portion 45 having a non-seal area 51 located below the center line Q and having a plurality of joint portions 41 arranged in the width direction X on the flange portion 28D located below the non-overlapping portion 29B. Is located. [Selection] Figure 1

Description

  The present invention relates to a disposable mask.

  In Patent Document 1, a mask body formed from a sheet made of fiber non-woven fabric, a pair of ear hooks extending annularly from both side edges of the mask body, and a plurality of ridges comprising overlapping portions obtained by folding the sheet in the mask body A disposable mask having a pleat is disclosed.

JP 2008-55035 A (P2008-55035A)

  In the disposable mask disclosed in Patent Document 1, an incision is formed in a central portion in the vertical direction of both side edges of the mask body. Normally, when the ear hooking part is hung around the ear part, a force to deform the mask main body from the base end part of the ear hooking part to the vertical direction acts on the mask main body. Even if such a force is applied, it can be dispersed and absorbed by the cuts to suppress deformation.

  However, since the notch is located in the center of the mask body, the distance from the fixed end of the ear hook to the notch is relatively large, and the force is transmitted from the base end of the ear hook to the notch. Cannot be dispersed and absorbed, and deformation may occur between the base end portion and the notch. In addition, both side edges of the mask main body extend in a straight line in the vertical direction, and even if the force to deform the mask main body in the notch can be dispersed and absorbed, it protrudes from the face in the width direction even when viewed from the front. Such an aspect cannot be provided and a clean impression that the wearer's face looks small cannot be given.

  The present invention is an improvement of conventional disposable masks, and it is an object to provide a disposable mask capable of suppressing the deformation of the mask body, exhibiting a curved shape along the face shape, and giving a clean impression. I have to.

  In order to solve the above-mentioned problems, the present invention has an up-down direction and a width direction, and extends in a ring shape from a transverse center line that bisects the up-down direction dimension, a mask body, and both side edges of the mask body. The present invention relates to a disposable mask including a pair of ear hooks.

In the disposable mask according to the present invention, the mask body is formed of a non-woven sheet, and the mouth is located between the upper and lower ends where the base ends of the pair of ear hooks are located and the upper and lower ends. A cover portion and a seal region in which a plurality of joint portions are intermittently extended in the vertical direction along the both side edges, and the mouth cover portion is formed from an overlapping portion where the sheet is folded. A plurality of ridges arranged in the vertical direction, and a non-overlapping portion located between the ridges below the transverse center line, the non-overlapping portion having a non-sealing region, the vertical dimension of the seal zone, the greater than the vertical spacing dimension between the plurality of joints, the the fold portion adjacent the non-overlapping portions on the lower side of the non-overlapping portions only, the plurality of Wide joints, where the joints are lined up in the width direction, To.

  The plurality of joint portions are heat-welded portions of the sheet, and the dimension in the width direction is 2 mm or less, and the distance from the both side edges of the mask body in the width direction is 7 mm or less. The part is not greatly separated from the side edge of the mask body. In such a mask, it is possible to prevent the edge portion positioned on the outer side in the width direction from the side edge from being separated so as to be lifted from the wearer's face.

The non-seal area is located only between a pair of flanges that are formed by bending the sheet into a cross-sectional Ω shape and are spaced apart from each other in the vertical direction. In such a mask, since the non-seal area is located in the non-overlapping portion having a single layer structure located between the ridges, a part of the mask body can be bent at the non-overlapping portion.

Before Kihi sealing zone, or said transverse centerline in the vertical direction et 2. 0-4.0 mm apart. In such a mask, since the non-seal area is located in the lower part of the mask body, it is possible to disperse and absorb the upward force that tries to deform the mask body starting from the base end of the ear hook.

  The dimension of the mask body in the vertical direction is about 60 to 100 mm.

  The mask main body further includes upper and lower edges, and corners where the upper and lower edges and the both side edges intersect, and the corners are curved. In such a mask, the corners are curved, exhibiting an overall rounded appearance, and are excellent in design.

The non-sealing region is disposed only in the non-overlapping portion and a separation portion located between the lowermost collar portion and the base end portion of the ear hook portion . In such a mask, the second non-sealed area can act together with the first sealed area to bend a part of the mask body.

  The disposable mask according to one or more embodiments of the present invention can disperse and absorb the force to deform the mask body in the non-overlapping portion in the wearing state, so that both side edges of the mask body The part can be prevented from separating from the face. Thereby, the lower part of the mask main body moves toward the face, and it is possible to give a clearer impression than the conventional mask in front view.

The drawings illustrate specific embodiments of the invention and include selective and preferred embodiments as well as the essential features of the invention.
The top view seen from the front of the disposable mask which concerns on 1st Embodiment of this invention. The perspective view which cut | disconnected along the II-II line | wire of FIG. 1, and looked at the one side part side of the mask from the outer surface. The enlarged view of the area | region enclosed with the III line shown in FIG. The side view of the mask in a wearing state. FIG. 5 is a partially enlarged view of FIG. 4. Sectional drawing which follows the VI-VI line shown in FIG. The front view of the mask in a wearing state. Sectional drawing similar to FIG. 6 in another Example. The top view similar to FIG. 1 of the mask which concerns on 2nd Embodiment.

  The following embodiment relates to the disposable mask shown in FIGS. 1 to 9 and includes not only an indispensable structure of the invention but also a selective and preferable structure.

<First Embodiment>
1-4, the mask 10 shown as an example of the disposable mask of this invention has the up-down direction Y and the width direction X, the skin opposing surface and the non-skin opposing surface which opposes it, and the up-down direction Y A transverse center line Q that bisects the dimensions of the mask body 20, a mask body 20, and a pair of annular ear hooks 30 extending from both side edges 20 c and 20 d of the mask body 20.

  The mask main body 20 is formed from a base sheet 21 made of a fiber nonwoven fabric, and has an upper end edge 20a that extends straight in the width direction X, and a lower end edge 20b that slightly curves downward and extends in the width direction X, Both upper and lower edges 20a and 20b have both side edges 20c and 20d extending in the vertical direction Y. The mask body 20 is positioned between the upper and lower ends 22 and 23 where the base ends (fixed both ends) 31 of the pair of ear hooks 30 are located and the upper and lower ends 22 and 23 in the vertical direction Y. It further has a mouth covering part (intermediate part) 24 facing the wearer's mouth. Further, the mask main body 20 has a curved corner portion 27 where the upper and lower end edges 20a, 20b and the side edges 20c, 20d intersect. Since the corner portion 27 has a curved shape instead of a sharp shape, no stimulation is given even if the wearer's face touches the corner portion 27.

  The vertical dimension Y of the mask body 20 (mask 10) (the length dimension of both side edges 20c and 20d) W1 is 60 to 100 mm, and the dimension in the width direction X (the length dimension of the upper and lower edges 20a and 20b) L1 is 140-180 mm. When the dimension L1 in the vertical direction Y of the mask main body 20 is 140 mm or less, the jaw part of the standard size of an adult wearer cannot be sufficiently covered, and the dimension L1 in the width direction X is 180 mm. In the above case, there is a possibility that the mask body 20 cannot be bent at the non-overlapping portion 29B of the mouth covering portion 24 described later.

  The base material sheet 21 forming the mask body 20 is composed of an inner layer sheet 25 positioned on the skin facing surface side and an outer layer sheet 26 positioned on the non-skin facing surface side. The inner layer sheet 25 and the outer layer sheet 26 are joined to each other by an outer peripheral seal region 40 that extends intermittently along the outer peripheral edge of the mask body 20. The outer peripheral seal region 40 is formed from a plurality of joints 41 that are spaced apart by a predetermined dimension in the extending direction. The outer peripheral seal region 40 is intermittently extended in the width direction X along the upper seal region 42 composed of two lines extending intermittently in the width direction X along the upper edge 20a of the mask body 20 and the lower edge 20b. It has a lower seal area 43 and a side seal area (seal area) 44 extending intermittently in the vertical direction Y along both side edges 20c and 20d.

The inner layer sheet 25 and the outer layer sheet 26 are, for example, fiber non-woven sheets having a gas permeability of 10 to 40 g / m ² including heat-fusible fibers, and are melt-blown fiber non-woven fabric, spunbond fiber non-woven fabric, and SMS fiber non-woven fabric. And various known fiber nonwoven fabrics such as air-through fiber nonwoven fabric. In addition, it is preferable to use a fiber nonwoven fabric having a good touch for the inner layer sheet 25, and a fiber nonwoven fabric having a relatively strong sheet strength for the outer layer sheet 26. You may interpose the sheet | seat which has. The ear hook 30 is preferably elastically stretchable, and is formed of a known material such as a nonwoven fabric, a woven fabric, a plastic film, or a rubber string.

  The outer peripheral seal region 40 is a welded seal line that welds the inner layer sheet 25 and the outer layer sheet 26 to each other at a plurality of joint portions 41 that are intermittently disposed, and both the sheets 25 and 26 are bonded only at the outer peripheral seal region 40. And are not joined to each other in other parts. Therefore, the entire mask 10 is excellent in flexibility and air permeability as compared with the case where the entire inner surfaces of both sheets 25 and 26 are bonded to each other.

  Referring to FIG. 3, the joint portion 41 of the outer peripheral seal region 40 has a substantially rectangular shape defined by a pair of short sides and a pair of long sides, and includes an upper seal region 42 and a lower seal region 43. Are arranged such that the long side extends in the width direction X, and forms two seal lines extending in the vertical direction Y. The vertical dimension Y between the seal lines in the upper seal area 42 is larger than the vertical dimension Y between the seal lines in the lower seal area 43. The side seal region 44 is formed by an outer line 44 </ b> A composed of a plurality of joint portions 41 and an inner line 44 </ b> B composed of two joint portions 41 located on the lower side of the mouth covering portion 24. The side seal region 44 has a wide joint portion 45 having the strongest joint strength among the side seal regions 41 in which the joint portion 41 on the inner line and the joint portion 41 on the outer line are arranged in the width direction X. In addition, the separation distance (pitch) between the joint portions 41 of the outer line 44A is larger than the other portions on the lower side of the mouth cover portion 24, and the joint portion 41 is disposed in the side seal region 44. A first non-seal area (folding guide part) 51 that is not provided and a second non-seal area 52 that is located below the wide joint 45 are further provided.

  Referring to FIG. 2, elastic strips 60 extending in the width direction X are disposed between the seal lines of the upper seal region 42. The elastic strip 60 is interposed between the inner layer sheet 25 and the outer layer sheet 26. Specifically, the elastic band piece 60 is sandwiched in a cylindrical space formed between two seal lines forming the upper seal region 42. It is fixed. On the outer sides in the width direction at both ends of the elastic strip 60, joint portions 41C for restricting the movement of the elastic strip 60 in the width direction X are arranged.

  The upper and lower edge portions of the inner layer sheet 25 extend outward in the vertical direction Y from the lower edge portion of the outer layer sheet 26, and the extended portions 25a and 25b are bent inward in the vertical direction Y. The upper seal region 42 and the lower seal region 43 are fixed to the non-opposing surface side of the outer layer sheet 26. Further, the lower end edge 20b of the mask body 20 has a shape that is gently curved downward due to the extended portion 25b being bent into a curved shape. The curved lower edge 20b and the curved corner portion 27 of the mask body 20 are combined, and the mask 10 has an overall rounded appearance.

  The ear hook 30 includes a pair of fixed end portions (base end portions) 31 positioned at the upper end portion 22 and the lower end portion 23 of the mask main body 20, and a free portion 32 that extends annularly between the fixed end portions 31. The base end portion 31 is welded to the upper and lower end portions 22 and 23 of the mask body 20, respectively, and a rectangular seal region 34 for fixing the base end portion 31 is formed at the upper and lower end portions 22 and 23. . The seal region 34 has a rectangular shape that is slightly larger than the outer shape of the base end portion 31. Since the seal area 34 is larger than the outer shape of the base end portion 31, the base end portion 31 has a required peel strength with respect to the mask body 20, and tries to peel it off to the base end portion 31 during wearing. Even if force acts, it does not peel easily.

  1 to 3, the lower seal region 43 extends in a curved shape along the lower end edge 20 b of the mask body 20, and both end portions thereof extend to the seal region 34 located at the lower end portion 23. . Further, the side seam area 44 is positioned so as to overlap the seal area 34 located at the upper end 22 and the seal area 34 located at the lower end 23. Therefore, the seal portion 41 of the side seal region 44 and the seal portion 41 of the lower seal region 43 overlap with the seal region 34 in a plan view of the mask 10. Therefore, in the seal area 34, not only the welded portion of the sheet is concentrated and the bonding strength is increased, but also the rigidity is relatively high and there is a possibility that it is strongly stimulated when touching the skin. Since the corner 27 to be rounded has a round shape, there is no possibility of strongly stimulating even if it touches the skin.

  The mouth covering portion 24 of the mask body 20 has a plurality of flange portions 28 extending in the width direction X formed by bending the base sheet 21 into a pleat shape. The heel part 28 is, in order from the upper side, first to third ridge parts 28A to 28C that protrude upward on the non-skin facing surface side of the mask body 20, and a first protrusion that protrudes downward below the third heel part 28C. 4 collar part 28D. The base sheet 21 is bent in a cross-sectional Ω shape at the third flange portion 28C and the fourth flange portion 28D. The mouth covering portion 24 is provided with such a pleating process so that the base sheet 21 is folded and laminated in a plurality of portions 29A, a third flange portion 28A, and a fourth flange portion 28D. And a non-overlapping portion 29B having a single-layer structure, in which the base sheet 21 is not folded. The first non-seal region 51 in which the joint portion of the side seal region 44 is not disposed is located in the non-overlapping portion 29 </ b> B of the mouth cover portion 24. The second non-seal area 52 extends from the flange portion 28D to the lower end portion 23 where the base end portion 31 is located.

  4 to 6, when the mask 10 is worn, the non-overlapping portion 29B is bent so that a part of the non-overlapping portion 29B is folded in the front-rear direction, and the lower portion 70 extending below the non-overlapping portion 29B is worn. It moves backward along the face shape of the person. Specifically, the non-overlapping portion 29 </ b> B is bent so as to be in contact with the face of the mask 10 toward the skin-facing surface, and the dimension W <b> 1 in the vertical direction Y of both side edges of the mask body 20 is small. .

  Referring to FIG. 5, when the mask 10 is worn, both edge portions of the mask body 20 are formed by pulling the ear hook portion 30 obliquely rearward in a state where the ear hook portion 30 is hung around the ear portion of the wearer. The force acting to deform it in the up-down direction Y acts. Specifically, a downward force F1 acts on the upper end portion 22 of the mask body 20 from the proximal end portion 31 of the ear hooking portion 30, and an upward force F2 acts on the lower end portion 23 from the proximal end portion 31. As described above, when the forces F1 and F2 that are opposite to each other in the vertical direction Y act on both side edges of the mask body 20, the side edges of the mask body 20 are lifted from the face, and a gap may be generated. In the wearing state, since both side edges of the mask body 20 are curved, the downward force F1 is obliquely downward along the shape of both side edges (the upward force F2 is obliquely upward). ).

  Further, a normal mask has a rectangular shape in which both side edges extend straight, and the width dimension is the same in the upper part and the lower part of the mask body. On the other hand, since the width of the wearer's face is smaller in the lower cheek than in the upper cheek, the lower part of the mask body covering the lower cheek seems to protrude laterally from the face. As a result, a gap was easily generated between the face and both side edges of the mask body. Further, the lower part of the mask body projects sideways in this manner, so that the entire lower cheek part of the wearer is completely covered in front view, and the wearer's face is larger than the actual size. There was a risk of giving such an impression.

  In the mask 10 according to the present embodiment, the upward force F2 and the proximal end portion 31 of the upper end portion 22 are absorbed and dispersed from the proximal end portion 31 of the lower end portion 23 in the non-overlapping portion 29B. Therefore, it is possible to suppress the two side edges of the mask body 20 from being lifted from the face due to the opposite forces F1 acting downward from each other. The non-overlapping portion 29B is bent toward the skin facing surface side of the mask body 20 so as to be convex upward by dispersing and absorbing the upward force F2, and a part of the non-overlapping portion 29B overlaps in the front-rear direction to form a pleat. doing. As described above, when the mask 10 is worn, the stretchable pleats are formed on the non-overlapping portion 29B, whereby both side edges of the mask body 20 are reduced in the vertical direction Y, and the mask body 20 is attached to the face. It exhibits a curved shape along the shape.

  Referring to FIG. 7, the lower end edge 20b of the mask body 20 has a slightly convex shape downward, so that both side edges of the mask body 20 are compared to the case where it extends straight in the width direction X. The base end portion 31 of the ear hook portion 30 located in the portion is separated from the lower end edge 20b in the vertical direction Y. For this reason, the vicinity of the base end portion 31 is fitted to the face by the tensile stress of the ear hooking portion 30, while the second lower portions 72 at both side edges located below the second end portion 72 in the external view of the mask 10, It is in a state where it is separated from the face and protrudes obliquely forward. In this manner, the first lower portion 71 extending from the non-overlapping portion 29B to the base end portion 31 is fitted toward the face, while the second lower portion 72 extending from the base end portion 31 to the lower end edge 20b is extended from the face. Since the three-dimensionally protruded obliquely forward so as to be separated from each other, in the front view of the mask 10, the entire lower part 70 of the mask main body 20 becomes narrow so that a part of the face is exposed. Compared to the case where the entire body 20 is covered with the main body 20, it is possible to give a clean impression that the wearer's face is small.

  For example, when the distance between the base end portion 31 of the ear hooking portion 30 that is the starting point of the upward force F2 and the non-overlapping portion 29B that is the stiffness change point is relatively large, the force F2 does not sufficiently act. The mask main body 20 does not bend at the non-overlapping portion 29B due to the influence of the facial movement or the like, but is bent at the other portion, and the lower portion 70 of the mask main body 20 cannot be deformed. In the mask 10 according to the present embodiment, since the non-overlapping portion 29B is located in the vicinity of the base end portion 31 of the lower end portion 23, the force F2 sufficiently acts on the non-overlapping portion 29B to bend it. be able to.

  As described above, in order to disperse and absorb the force F2 in the non-overlapping portion 29B and use it as a bending start point, it is preferably located on the lower side of the mask body 20, and specifically, the upper and lower sides of the mask body 20 When the dimension in the direction Y is about 60 to 100 mm, it is preferable that the distance from the transverse center line Q of the mask body 20 is about 2.0 to 4.0 mm in the vertical direction Y. When the separation dimension R3 in the vertical direction Y of the non-overlapping portion 29B from the transverse center line Q is about 2.0 to 4.0 mmmm, the upward force F2 from the base end portion 31 of the ear hook 30 is not It is dispersed and absorbed in the overlapping portion 29B, and can be bent starting from it in the wearing state.

  Referring to FIG. 3 again, in order to bend a part of the mouth cover 24 in the non-overlapping portion 29B, it is preferable that the rigidity is relatively low, and the joint portion of the side seal region 44 that enhances the rigidity. It is preferable that 41 is not arrange | positioned. In the present embodiment, in the non-overlapping portion 29B, the first non-sealing area 51 where the joint portion 41 is not disposed is positioned, so that it acts as a bending guide portion, and the rigidity of the non-overlapping portion 29B is increased. Has a predetermined relatively low rigidity, and can absorb and disperse the upward force F2 more reliably. In order to achieve such an effect, the dimension L3 in the vertical direction Y of the first non-seal area 51 is preferably larger than the separation dimension (pitch) R2 between the plurality of joint portions 41 in the side seal area 44. When the dimension L3 is equal to or smaller than the separation dimension R2, the upward force F2 is absorbed and dispersed not in the first non-seal area 51 but in the separation part between the joint portions 41 in the side seal area 44. This is because there is a possibility of bending, and there is a possibility that the entire mask main body 20 cannot be curved in a predetermined shape.

  Specifically, the first non-seal area 51 is larger than the dimension in the vertical direction Y of the non-overlapping portion 29B, and the dimension L2 in the vertical direction Y is preferably about 8 to 12 mm. Referring to FIG. 6, the dimension L5 in the vertical direction Y of the portion 75 where the first non-seal area 51 and the overlapping portion 29A located above the non-overlapping portion 29B overlap each other in plan view is about 1 to 3 mm. Preferably there is. The overlapping portion 29A adjacent to the first non-sealing area 51 and the non-overlapping portion 29B overlaps in plan view, resulting in a deep change due to an abrupt change in rigidity due to the number of stacked sheets of the third collar portion 28C and the non-overlapping portion 29B. It is possible to suppress the formation of gathers and bend the vicinity of the non-overlapping portion 29B in a curved shape along the face.

  Referring to FIG. 3, the joint 41 has a width direction X dimension W2 of preferably 1 mm or less and at least about 2 mm or less, and a vertical direction Y dimension L4 of preferably about 1.5 mm or at least about 2.0 mm or less. Thus, the separation dimension R1 from both side edges 20c, 20d of the mask body 20 in the width direction X is preferably 4 mm or less, and at least 7 mm or less. When the joint portion 41 has the width dimension W2 and the dimension L4 in the vertical direction Y, the side edge portion of the mask body 20 is fitted to the wearer's skin in the side seal region 44, and a gap is generated between the face portion and the face. Can be suppressed. On the other hand, when the width dimension of the joint portion 41 is 2 mm or more, the side seal region 44 has a relatively high rigidity, and the side edge portion of the mask body 20 can exhibit a curved shape along the face shape. There is a risk of disappearing.

  Further, when the separation dimension R2 of the joint portion 41 is 7 mm or more, the side edge portion located outside the width direction X from the joint portion 41 of the mask body 20 is bent in a direction away from the face in the wearing state. There may be a gap between the face and the mask body. Since the joint part 41 which overlaps each collar part 28A-28D is a part which may become an action point which deform | transforms it in the direction different from a deployment direction, when collar part 28A-28D expand | deploys in a wearing condition, It is preferable to be located as far as possible from the center side of the portions 28A to 28D, and when the width dimension W2 of the joint portion 41 is large, the degree of such deformation increases. Therefore, it can be said that the dimension W2 is preferably as small as possible.

  A wide joint portion 45 where the joint portion 41 between the inner line 44B and the outer line 44A of the side seal region 44 is arranged in the width direction X is located on the flange portion 28D located below the non-overlapping portion 29B. Thus, by disposing the high-rigidity portion by the joint portion 41 in the wide range in the width direction X on the flange portion 28D, the upward force F2 can be dispersed and absorbed in the non-overlapping portion 29B in a relatively wide range. The side edges of the mask body 20 can be bent. Further, the mask body 20 has a second non-seal area 52 in a separated portion located between the collar part 28 </ b> D and the base end part 31 of the ear hook part 30, and the first non-seal area 51 and the first non-seal area 51 together. It can act as a starting point for bending the lower portion 71 backward. However, since the second non-seal region 52 is adjacent to the base end portion 31 that is the base point of the upward force F2, the second non-seal region 52 starts from the influence of the tensile stress applied to the base end portion 31. As will not bend.

  As described above, in the present embodiment, the non-overlapping portion 29B is formed between the flange portions 28C and 28D formed by bending the base sheet 21 into an Ω shape, and thus does not overlap with the overlapping portion 29A. The difference in rigidity from the portion 29B becomes relatively large, and the non-overlapping portion 29B tends to be a bending start point. That is, by bending the base sheet 21 into an Ω shape, the non-overlapping portion 29B has a single-layer structure of the base sheet 21, whereas the overlapping portion 29A located on the upper and lower side is provided by the base sheet 21. It has a three-layer structure formed by being folded in three. For example, it can be said that the difference in rigidity is more generated than in the case where the latter is a two-layer structure, and the non-overlapping portion 29B is likely to be a bending start point.

  As described above, in addition to bending the base sheet 21 into an Ω shape to make the number of sheets of the non-overlapping portion 29B and the overlapping portion 29A different, various known bending methods may be employed, or the overlapping portion Even if the number of the 29A and the non-overlapping portion 29B is equal, the non-overlapping portion 29B may act as a bending start point by making the total mass of the sheets different. Therefore, for example, even when the base sheet 21 is bent so that the collar portions 28A to 28D are all protruded downward on the non-skin facing surface side of the mask body 20, the collar portion 28C and the collar portion 28D. By setting the separation dimension in the vertical direction Y to about 4 mm, it is possible to form the non-overlapping portion 29B serving as the bending start point. Further, in the non-overlapping portion 29B, a cutout portion may be provided in the existence area of the non-seal area 51 in order to reliably absorb and disperse the upward force F2. Even in such a case, the upward force F <b> 2 is divided at the notch, and deformation of the mask body 20 can be suppressed.

  Referring to FIG. 5 again, the perpendicular line K1 that hangs down from the portion P1 where the skin facing surface of the lower portion of the mask body 20 abuts the face of the wearer toward the lower edge 20b, and the abutting portion P1 and the mask body. The intersection angle α with the virtual line K2 connecting the lowest point P2 located at the lowest point of 20 is preferably about 10 to 20 degrees. When the intersection angle α is 20 degrees or more, when the mask body 20 is a relatively small size (for example, the width dimension is 150 mm or less), the three-dimensionally bent lower portion 70 is conspicuous, and the appearance of the mask 10 This is because the wearer's face may give a longer impression than the actual appearance.

  FIG. 8 is a view similar to FIG. 6 in another embodiment. Referring to FIG. 8, in this embodiment, unlike the folding mode of FIG. 6, the pleats that are bent toward the skin-facing surface side of the mask main body 20 so as to protrude downward and extend in the worn state. Forming. Also by such a bending mode, the dimension W1 in the vertical direction Y of the mask body 20 is reduced, and the mask body 20 is fitted along the face.

Second Embodiment
FIG. 9 is a front view similar to FIG. 1 of the mask 10 according to the second embodiment. Since the basic structure of the mask 10 of this embodiment is the same as that of the mask 10 of the first embodiment, only the differences will be described below.

  In the mask 10 according to the present embodiment, unlike the mask 10 according to the first embodiment, the mouth cover portion 24 is not formed with a plurality of collars, and the entire mask body 20 is formed from the inner and outer layer sheets 25 and 26. It has a flat outer shape with no uneven shape. At both side edges of the mask main body 20, below the transverse center line Q, a substantially V-shaped notch (folding guide part) gradually narrows from the side edges 20c, 20d toward the inside in the width direction X. ) 90 is located. Since the notch 90 is positioned below the transverse center line Q, the force F2 directed upward from the mask body 20 when worn is compared to the case where it is located on or near the transverse center line Q. Can be reliably absorbed and dispersed, and deformation of the mask body 20 can be suppressed. The separation dimension R3 in the vertical direction Y from the transverse center line to the notch 90 is about 2.0 to 4.0 mm. The cutout 90 may have various known shapes such as a single or a plurality of straight shapes and curved shapes in addition to the substantially V shape. Further, similarly to the first embodiment, a plurality of flange portions 28 may be formed in the mouth covering portion 24. In that case, the bending guide portion is formed by the notch portion 90 being positioned in the non-overlapping portion 29B. Can function more as.

  Further, the base end portion 31 of the ear hook 30 is fixed to the skin facing surface side of the mask main body 30 via the seal region 34. Thus, when the base end part 31 of the ear hook part 30 is being fixed to the skin opposing surface side of the mask main body 30, the base end part 31 is being fixed to the non-skin opposing surface side of the mask main body 30 Compared to the above, the movable range of the ear hook 30 can be expanded. Therefore, for example, when individually wrapping, the ear hooking portion 30 can be accommodated in a state of being laminated on the skin facing surface side of the mask main body 20 without bending the corner portion 27.

  For the members constituting the mask 10, unless otherwise specified, in addition to the materials described in the present specification, known materials usually used in this type of field can be used without limitation. . In addition, terms such as “first” and “second” used in the present specification are merely used to distinguish similar elements, positions, and the like.

DESCRIPTION OF SYMBOLS 10 Disposable mask 20 Mask main body 20a Upper end edge 20b of mask main body Lower end edge 20c, 20d of mask main body Side edge 22 of mask main body 23 Upper end part 23 Lower end part 24 Mouth covering part 27 Corner part 28A-28D Girder part 29A Overlapping part 29B non-overlapping Part 30 Ear hook 31 Base end of the ear hook (fixed end)
40 outer peripheral seal area 41 joint 42 side seal area (seal area)
45 Wide joint 51 First non-seal area (folding guide)
52 2nd non-seal area 90 Notch part (folding guide part)
L1 Vertical dimension of the mask body L4 Vertical dimension of the joint Q Crossing center line R1 Spacing dimension in the width direction between the joint part and both side edges of the mask body R3 Separation dimension in the vertical direction of the non-seal area and the transverse center line X Width direction Y Vertical direction

Claims (7)

In a disposable mask having a vertical direction and a width direction, and including a transverse center line that bisects the vertical dimension, a mask body, and a pair of ear hooks extending annularly from both side edges of the mask body,
The mask body is formed from a non-woven sheet, and upper and lower ends where the base ends of the pair of ear hooks are located, mouth coverings located between the upper and lower ends, and both side edges. A plurality of joints disposed intermittently extending in the vertical direction along the seal region,
The mouth covering portion includes a plurality of overlapping portions in which the sheet is folded, and has a plurality of flange portions arranged in the vertical direction, and a non-overlapping portion located between the flange portions below the transverse center line. ,
The non-overlapping portion has a non-seal area,
The vertical dimension of the non-seal area is larger than the vertical spacing between the plurality of joints,
It said mask, characterized in that the folds section adjacent to the non-overlapping portions on the lower side of the non-overlapping portions only, the wide joints the plurality of joints is aligned to the width direction is located. Wherein the plurality of joints, a heat welded portion of the sheet, the width dimension is 2mm or less, according to claim 1 separation dimension is 7mm or less from both side edges of the mask body in the width direction mask of. 3. The mask according to claim 1, wherein the non-seal region is located only between a pair of the flange portions that are formed by bending the sheet into a Ω-shaped cross section and that are spaced apart from each other in the vertical direction. Before Kihi sealing zone, or said transverse centerline in the vertical direction et 2. The mask according to any one of claims 1 to 3 , which is spaced from 0 to 4.0 mm. The mask according to any one of claims 1 to 4 , wherein a dimension of the mask body in the vertical direction is about 60 to 100 mm. The mask body includes upper and lower edges, further comprising a corner the upper bottom edge and said side edges intersect, the mask according to any one of claims 1 to 5, wherein said corner portion is a song-like . The non-sealing area, the a non-overlapping portion of claim 1 to 6 which is disposed only in a spaced area which is located between the most located below the fold portion and the base end portion of the ear shell A mask according to any one of the above.

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