JP3203072U - Disposable mask - Google Patents

Abstract

Provided is a three-dimensional disposable mask capable of unfolding a collar portion positioned at a lower end portion in a worn state and forming a space between a wearer's mouth and a mask body. In a disposable mask 10, a mask body 20 includes upper and lower end portions where upper and lower fixing portions 34A, 34B of a pair of ear hanging portions are located, a mouth covering portion located between upper and lower end portions, both side edges 20c, And a seal region in which a plurality of joints are arranged intermittently extending in the vertical direction along 20d. The mouth covering part and the lower end part have a collar part formed by folding a sheet forming the mask body, and the dimension R1 in the width direction X between the lower fixing part 34B of the pair of ear hooking parts is set as the lower fixing part. The value divided by the dimension W2 in the vertical direction Y of the flange portion 28E located between 34B is 11 or more. [Selection] Figure 6

Description

  The present invention relates to a disposable mask.

  Referring to FIG. 4, Patent Document 1 discloses a mask main body 220, a pair of ear hooks 230 extending annularly from both side edges 220 c and 220 d of the mask main body 220, and an overlapping portion where sheets are folded in the mask main body 220. A disposable mask 210 having a plurality of pleats 228 is disclosed.

Utility Model Registration No. 3200049 (U3200049)

  Referring to FIG. 4, a disposable mask 210 disclosed in Patent Document 1 includes an upper end edge 220a, a lower end edge 220b having a smaller length dimension (dimension in the width direction) than the upper end edge 220a, and a wearer's mouth and nose. It has a mouth covering part 224 that covers it and a lower end part 223 that faces the jaw part. A lowermost flange portion 228D is located between the lower fixing portions 234B and 234B of the ear hook portion 230 at the lower end portion 223, and by expanding the lower end portion 223, the lower end portion 223 expands in the vertical direction Y and expands forward. Since the outer shape is formed, a space is generated between the mouth and the mask 210, and breathing difficulty can be reduced.

  However, since the lower end edge 220b of the mask body 220 is smaller than the upper side edge 220a, and the lower fixing part 234B of the ear hooking part 230 is located on the inclined part side of the lower end edge 220b, the separation dimension between the lower fixing parts 234B. Is relatively small. For this reason, deformation (distortion) at both side edges of the mask main body 220 is increased, and there is a possibility that the lowermost collar portion 228D may not be deployed when worn. In such a case, the lower end 223 does not expand in the vertical direction Y and is in contact with the wearer's mouth, so that breathability is given, or in the case of a female wearer, the lipstick is on the mask body 220. There is a risk of sticking to the inner surface. In addition, since the lowest heel portion 228D does not expand, the fitting property of the side edge portions 218 may be reduced, and a gap may be formed between the face portion and the face.

  The present invention is an improvement of a conventional disposable mask, and in a worn state, can reliably develop the collar portion located at the lower end portion to form a space between the wearer's mouth and the mask body. The challenge is to provide a three-dimensional disposable mask

  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 size in the up-down direction, 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 includes upper and lower end portions where the upper and lower fixing portions of the pair of ear hook portions are located, a mouth covering portion located between the upper and lower end portions, and the both side edges. A seal region in which a plurality of joints are arranged intermittently extending in the vertical direction, and the mouth covering part and the lower end part are formed by folding a sheet forming the mask body. And a value obtained by dividing the dimension in the width direction between the lower fixing parts of the pair of ear hooks by the dimension in the vertical direction of the collar part located between the lower fixing parts is 11 or more It is characterized by that.

  Since the dimension in the width direction between the lower fixed parts is 120 to 135 mm and the dimension in the vertical direction of the collar part is 6 to 11 mm, when the mask is worn, the collar part is developed and the lower end part is vertically A space is formed between the mouth and the mask body.

  The collar portion has a shape that protrudes downward, and the lower edge extending in the width direction does not overlap the lower fixing portion of the ear hook portion in plan view, so that a mask body is formed at the lower edge. When the sheet to be worn is not joined and worn, the buttocks can be reliably deployed.

  Since it has a notch that is located below the transverse center line and extends from both side edges of the mask body to the inside in the width direction, it absorbs and disperses the force to deform both side edges of the mask body. Can do.

  Since the notches extend further inward in the width direction across the seal area, it is possible to more reliably absorb and disperse the force for deforming both side edges of the mask body.

  Since the notch is located in the vicinity of the lower fixing part of the ear hooking part, the side edges of the mask body will be deformed as compared with the case where the notch is located on or above the transverse centerline. Can be absorbed and dispersed more reliably.

  Since at least one of the mouth covering portion and the lower end portion has a non-overlapping portion that is formed by bending the sheet into a cross-sectional Ω shape and that is positioned between a pair of the flange portions that are spaced apart from each other in the vertical direction. It is possible to absorb and disperse the force for deforming both side edges of the mask body at the overlapping portion.

  By positioning the notch in the non-overlapping portion, the rigidity in the non-overlapping portion is further reduced, and the force for deforming both side edges of the mask body can be reliably absorbed and dispersed in the non-overlapping portion. it can.

  According to the disposable mask according to the present invention, the value obtained by dividing the dimension in the width direction between the lower fixing parts of the pair of ear hooks by the vertical dimension of the collar part located between the lower fixing parts is 11 or more. From when it is worn, the buttock can be expanded and the mask body can be expanded in the vertical direction. Can be reduced.

The drawings illustrate specific embodiments of the present invention and include selective and preferred embodiments as well as essential configurations of the invention.
The top view seen from the front of the disposable mask which concerns on 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 top view of a mask main body. The top view of the conventional mask. (A) The side view of the mask in a wearing condition. (B) The side view of the conventional mask in a wearing condition. (A) The figure which shows a mode when the lowest collar part of a mask expand | deploys. (B) The figure which shows a mode when developing the conventional mask. (A) The front view of the mask in a wearing condition. (B) The front view of the conventional mask in a wearing condition. (C) The rear view of the mask in a wearing condition. (D) The rear view of the conventional mask in a wearing condition. The top view of the mask in an example of a modification. The top view of the mask in an example of another modification.

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

  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 facing 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 body 20 is formed of a base sheet 21 and has an upper end edge 20a that extends straight in the width direction X, a lower end edge 20b that slightly protrudes downward and extends in the width direction X, and an upper and lower end edge 20a. , 20b and both side edges 20c, 20d extending in the vertical direction Y, and both side edges 18 are provided. 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 has a curved shape instead of a sharp shape, no stimulation is given even if the wearer's face touches the corner.

  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 W1 in the vertical direction Y of the mask main body 20 is 140 mm or less, it is not possible to sufficiently cover the standard size jaw part of an adult wearer, 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. In addition to various known fiber nonwoven fabrics such as air-through fiber nonwoven fabric, it can be formed from a sheet material having good touch and air permeability, such as woven fabric, gauze, and cotton fabric. Although not shown, a sheet having a fine particle filter function may be interposed between the inner and outer layer sheets 25 and 26. The ear hook 30 is preferably elastically expandable and contractible, and can be 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.

  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 both 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 extending annularly between the fixed both end portions 31. The base end portions 31 are welded to the upper and lower end portions 22 and 23 of the mask main body 20, respectively, and the upper and lower end portions 22 and 23 are rectangular upper and lower fixing portions (upper and lower seal portions) that fix the base end portion 31. 34A and 34B are formed. The upper and lower fixing portions 34 </ b> A and 34 </ b> B have a rectangular shape that is slightly larger than the outer shape of the base end portion 31. Since the upper and lower fixing parts 34A and 34B are larger than the outer shape of the base end part 31, the base end part 31 has a required peeling strength with respect to the mask body 20, and peels it to the base end part 31 during wearing. Even if the force to be applied acts, it does not peel off easily.

  Referring to FIGS. 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 ends thereof extend to the lower seal region 43 located at the lower end 23. ing. Further, the side seal region 44 is positioned so as to overlap the upper seal region 42 located at the upper end portion 22 and the lower seal region 43 located at the lower end portion 23. Therefore, the joint 41 of the side seal region 44 and the joint 41 of the lower seal region 43 overlap with the lower seal region 43 in a plan view of the mask 10. Therefore, in the lower fixing portion 34B, 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 the skin may be strongly stimulated when touching the skin. Since the corner portion 27 is rounded, 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. It has a 4 collar part 28D and a lowermost collar part (a collar part, a fifth collar part) 28E. The base sheet 21 is bent in a cross-sectional Ω shape at the third flange portion 28C and the fourth flange portion 28D. In addition to the flanges 28 </ b> A to 28 </ b> E formed of overlapping portions (multilayer portions) in which the base sheet 21 is folded and laminated in plural, the mouth covering portion 24 is subjected to such pleating. The non-overlapping portion (non-multilayer portion) 29 having a single layer structure, in which the base sheet 21 is not folded, is located between the third flange portion 28C and the fourth flange portion 28D.

  Since each collar part 28A-28E is a superimposition part which has the laminated structure formed by the base material sheet 21 being bent, rigidity is higher than the non-overlapping part 29 which has a single layer structure, and the former is a high-rigidity area | region, The latter can be said to be a low rigidity region. As described above, since the rigidity is different between each of the flange portions 28A to 28E and the non-overlapping portion 29, the force acting on both side edge portions 18 of the mask body 20 when wearing is applied to the low rigidity region. By absorbing and diffusing in the non-overlapping portion 29, it is possible to suppress deformation of the entire side edge 18 and to prevent lifting from the face. Here, “the rigidity of the flanges 28 </ b> C to 28 </ b> E is higher than the rigidity of the non-overlapping portion 29” means that each of the flanges 28 </ b> A to 28 </ b> E is more than the non-overlapping portion 29 in the bending rigidity at least in the vertical direction Y. Means high. In addition to the folds of the base sheet, the collar portion 28 includes inner and outer layer portions that are folded in the thickness direction of the mask main body 20 by the folds. In the mask 10 of this embodiment, only the lowermost flange portion 28E is located at the lower end portion 23, but a plurality of flange portions may be located.

  Referring to FIG. 2, the lowermost collar portion 28 </ b> E has an inner layer portion 35 and an outer layer portion 36 that are folded in the thickness direction of the mask main body 20 by a fold, and is fixed to the lower end portion 23 under the ear hook portion 30. It extends in the width direction X between the portions 34B. The width dimension of the lowermost brim part 28E, that is, the dimension in the vertical direction Y in the state where the lowermost brim part 28E is expanded (the sum of the inner layer part 35, the vertical dimension Y, and the vertical dimension Y of the outer layer part 36) The dimension (W2) is substantially the same as the width dimension (dimension in the vertical direction Y) of the first to third flange portions 28A to 28C. Specifically, the width dimension W2 is 6 to 11 mm. In addition, as long as the technical effect of the present invention described later is exerted, the width dimension W2 of the lowermost flange part 28E is different from the width dimension of the other collar parts 28A to 28D and may be relatively small or large. May be. On the other hand, the width dimension (dimension in the vertical direction Y) W3 of the non-overlapping portion 29 is 1 to 7 mm. The non-overlapping portion 29 functions as a bending guiding means for dispersing and absorbing the force for deforming the both side edge portions 18 of the mask 10, and when it is less than 1 mm, The adjacent third and fourth flange portions 28C and 28D may be deformed. Further, when the width dimension W3 of the non-overlapping portion 29 exceeds 7 mm, the width becomes relatively large, and a plurality of bendings may be made in the non-overlapping portion 29, resulting in a distorted shape.

  Referring to FIG. 4, a conventional mask 210 is formed from a base sheet having a longitudinal center line that bisects a dimension in the width direction, a transverse center line M that bisects a dimension in the vertical direction, and an inner and outer layer. And a pair of annular ear hooks 230 extending from both side edges of the mask body 220. The inner and outer layers of the base material sheet are joined by a seal region including a plurality of seal portions arranged on the outer periphery of the mask main body 220. An upper end 222 having an outer shape defined by an upper end edge 220a, a lower end edge 220b, and both side edges 220c and 220d, an upper end portion 222 where the upper fixing portion 234A of the ear hook portion 230 is located, and a lower fixing portion of the ear hook portion 230 It has a lower end 223 where 234B is located and a mouth cover (intermediate part) 224 located between the upper and lower ends 222, 223. The intermediate portion 224 and the lower end portion 223 are provided with a plurality of flange portions 228A to 228D formed by folding a base sheet into a pleat shape, and the mouth covering portion 224 includes first to third flange portions. 228A-228C and the lowermost collar part (4th collar part) 228D are located in the lower end part 223. FIG. Further, in the vicinity of the transverse center line M, the base sheet is folded into a Ω cross section, whereby the first flange part 228A is convex upward, and the second flange part 228B is downward convex, A non-overlapping portion 229 having a single layer structure in which the base sheet is not folded is formed.

  In the conventional mask 210, the upper edge 220a extends straight in the width direction, and the lower edge 220b extends from the center portion extending straight in the width direction and from the lower edge of the lower fixing portion 234B on both sides of the center portion. And an inclined portion extending in a straight line toward the central portion. In addition, a notch 260 extending inward in the width direction is located at a substantially central portion of both side edges 220c and 220d, and an inclined portion extending obliquely inward in the width direction is located below the notch 260. ing.

  Referring to FIG. 5 (a), when the mask 10 is worn, both sides of the mask body 20 are pulled by pulling the ear hook 30 backward in a state where the ear hook 30 is hung around the wearer's ear. A force is applied to the edge 18 to deform it in the vertical direction Y. 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, forces F1 and F2 opposite to each other in the vertical direction Y act on the side edges 18 of the mask main body 20, whereby the side edges 18 are deformed and lifted from the face, which may cause a gap. In the non-overlapping portion 29 that is a low-rigidity region having a low rigidity compared to the flange portions 28A to 28E, bending is performed so as to absorb and disperse these forces, thereby suppressing deformation of both side edge portions. Can do.

  Referring to FIG. 5 (b), when the conventional mask 210 is worn, the ear hooking portion 230 is rearward in a state where the ear hooking portion 230 is hung around the wearer's ear portion, similarly to the mask 10. By being pulled, a force is applied to both side edges of the mask body 220 to deform it in the vertical direction. Specifically, a downward force F3 acts from the proximal end portion of the ear hooking portion 230 at the upper end portion 222 of the mask body 220, and an upward force F4 acts from the proximal end portion at the lower end portion 223. As described above, the opposite side forces F3 and F4 in the vertical direction Y act on the side edges 218 of the mask body 220, so that the side edges 218 may be deformed. In the conventional mask 210, the non-overlapping portion 229 is bent so as to absorb and disperse the forces F3 and F4, and the notch 260 functions to release the forces F3 and F4 to suppress such deformation. Yes.

  Referring to FIG. 6A, in the mask 10, a force is applied to the lowermost flange portion 28 </ b> E located at the lower end portion 23 to expand the folded portion in the vertical direction Y. By applying a force to expand the lowermost flange portion 28E, the inner layer portion 35 is expanded downward from the central portion (folded portion) of the lowermost flange portion 28E, and the outer layer portion 36 is directed upward. Deployed. Usually, even if the width dimension (vertical dimension) of the heel portion is constant in the heel portion of the mask, the width dimension between the side seal areas to which the heel portion is fixed causes the separation at the side edges of the mask body. The size of the deformation area is different. That is, when the side seal area is close to the both side edges of the mask body and the separation distance is large from each other, the deformation area at the both side edges of the mask body is small, while the side seal area is When they are located relatively far from both side edges and the distance between them is small, the deformation area at both side edges of the mask body becomes large.

  In the mask 10, both side edges 20c and 20d extend in parallel in the vertical direction Y, and the flange portion 28E is fixed at the lower fixing portion 34B. Therefore, the separation dimension R1 between the inner edges of the lower fixing portion 34B is compared. The deformation area 70 between the extension lines of the force to expand the flange portion 28E along the outer shape in the vertical direction Y is relatively small. Thereby, deformation of both side portions (fixed portions) of the lowermost collar portion 28E due to the upward force F2 at the side edge portions 18 of the mask body 20 is suppressed, so that when the ear hook portion 30 is hung around the ear portion, The inner and outer layer portions 35 and 36 forming the lowermost flange portion 28E can be developed.

  Referring to FIG. 6 (b), even in the conventional mask 210, when worn, the force to expand the folded portion in the vertical direction with respect to the lowermost flange portion 228D located at the lower end portion 223. Works. By applying a force to expand the lowermost flange portion 228D, the inner layer portion 235 folded at the lowermost flange portion 228D is expanded downward, and the outer layer portion 236 is expanded upward. The In the mask 10, the lowermost flange portion 228D is located at the inclined portion of the side edges 220c and 220d, and the joint portion 241 of the side seal region 244 that fixes the bottom edge portion 228D is located away from the side edges 220c and 220d. Their separation dimension R2 is relatively small. For this reason, the deformation area 270 between the extension lines of the force that attempts to expand the vertical direction of the flange 228D along the outer shape thereof is relatively large. As a result, both side portions (fixed portions) of the lowermost collar portion 228D at both side edge portions 218 of the mask body 220 are deformed to form the lowermost collar portion 28D when the ear hooking portion 230 is hung around the ear portion. Thus, the inner and outer layer portions 235 and 236 cannot be sufficiently developed.

  The lowermost flange portion 28E of the mask 10 and the lowermost flange portion 228D of the mask 210 are located at the lower end portions 23 and 223 of the mask bodies 20 and 220, respectively, and face the wearer's mouth and / or chin portion. The width dimension is relatively smaller than the other ridges facing the face, and the width dimensions W2 and W4 are 6 to 11 mm. On the other hand, the separation dimension R1 between the lower fixed portions 34B of the mask 10 and the separation dimension R2 between the joint portions 241 of the mask 210 are different. The separation dimension R1 is 120 to 135 mm, and the separation dimension R2 is 100 to 115 mm. It is.

  In the mask 10, since the width dimension W2 and the separation dimension R1 have such a relationship, the dimension (separation dimension) R1 in the width direction X between the lower fixing parts 34B of the pair of ear hooks 30 is set between the lower fixing parts 34B. The value divided by the dimension (width dimension) in the vertical direction Y of the lowermost flange portion 28E is 11 or more. On the other hand, in the conventional mask 210, the dimension (separation dimension) R <b> 2 in the width direction X between the joints 241 of the side seal regions 244 of the pair of ear hooks 230 is set to The value divided by the vertical dimension (width dimension) is 11 or less. According to the applicant's knowledge, when the value calculated by the calculation formula is 11 or more, the deformation area in both side edges of the mask body is relatively small and worn like the mask 10. In some cases, the lowermost heel portion is easily unfolded. On the other hand, in the case of 11 or less, like the conventional mask 210, the deformation area in both side edges of the mask body is relatively large, and the lowermost heel portion is worn when worn. There is a possibility that the part is difficult to be deployed.

  Although not shown, the lower edge extending in the width direction of the lowermost flange portion 28E, that is, the fold portion, overlaps with the lower fixing portion 34B of the ear hook portion 30 at both side edge portions 18 of the mask body 20. Preferably not. In such a case, compared to the case where the lower fixing portion 34B and the lower fixing portion 34B are overlapped with each other, the rigidity on both sides of the crease portion that becomes the base point of the development of the lowermost flange portion 28E becomes lower and the deployment becomes easier.

  Referring to FIG. 5 (a) again, in the mask 10, all the heel portions 28A to 28E including the lowermost heel portion 28E are sufficiently developed to form a three-dimensional form, and the mouth portion of the wearer. A relatively large space S1 is formed between the mask body 20 and the mask body 20. Accordingly, the wearer does not feel stuffy, and in the case of a female wearer, the lipstick can be prevented from adhering to the inner surface of the mask body 20. Referring to FIG. 5B, in the conventional mask 210, the lowermost collar portion 228D is not sufficiently developed, so that a relatively small space S2 is formed between the mouth of the wearer and the mask body 220. The wearer feels stuffy and the lipstick may adhere to the inner surface of the mask main body 220.

  Referring to FIGS. 7A and 7C, the mask body 20 has a shape in which the lower edge 20b is slightly convex downward, and the lowermost flange portion 28E is developed so that the lower end portion 23 is formed. Since the three-dimensional shape projecting forward is exhibited, the lower end portion 23 becomes narrower along the shape of the jaw portion in the front view, and the jaw portion is sharper than the actual shape, and an impression of a small face can be given. Further, since the deformation region 70 of the lowermost flange portion 28E is relatively small, and the forces F2 and F3 for deforming the side edge portions 18 in the non-overlapping portion 29 can be dispersed and absorbed, The deformation of the portion 18 can be suppressed, and the face can be fitted even in a side view.

  Referring to FIGS. 7B and 7D, in the conventional mask 210, although the lower end edge 220b has a sloped portion, it has a shape that protrudes downward, but the lowermost flange 228D is not sufficiently developed. Therefore, the entire side edges 218 are separated from the face, and the fit is deteriorated. Therefore, in the front view, the lower end portion 223 may be protruded laterally from the wearer's chin portion, which may give an impression that the outer contour of the face is large. The conventional mask 210 can absorb and disperse the forces F3 and F4 for deforming the side edges 218 in the non-overlapping portion 229 and the notch 260, but becomes a base point of the upward force F4. Since it is located apart from the lower fixing part of the ear hooking part 230, the upward force F4 acting on the deformation region 260 cannot be absorbed and dispersed.

  Referring again to FIG. 6A, in the mask 10 according to the present invention, since the upper fixing portion 34A and the lower fixing portion 34B are arranged in the vertical direction Y, they pass through their inner edges. Dotted lines (virtual lines) T1 and T2 extend in the vertical direction Y in parallel. Between the alternate long and short dash lines T1 and T2 of the mask 10, the first dimension N1, which is the dimension in the width direction X between the upper fixing parts 34A of the ear hooking part 30, and the dimension in the width direction X between the lower fixing parts 34B of the ear hooking part 30. The correlation between the second dimension N2 (same as the separation dimension R1) and the third dimension N3 which is the dimension in the width direction X of the lower edge of the lower end 23 is N3> N1≈N2.

  Referring to FIG. 6B, in the conventional mask 210, the upper fixing portion 234A and the lower fixing portion 234B of the ear hooking portion 230 are displaced in the vertical direction Y, so that they pass through the inner edges thereof. The alternate long and short dash lines (virtual lines) T1 and T2 incline toward the center in the width direction X and extend in the crossing direction. Between the alternate long and short dashed lines T1 and T2 of the mask 210, the first dimension N4, which is the dimension in the width direction X between the upper fixing parts 234A of the ear hooking part 230, the dimension in the width direction X between the lower fixing parts 234B of the ear hooking part 230. The correlation between the second dimension N5 (same as the separation dimension R2) and the third dimension N6 that is the dimension in the width direction X of the lower edge 220b is N4> N6> N5.

  In the mask 10 according to the present invention, the first dimension N1 between the upper fixing parts 34A of the ear hooking part 30 and the second dimension N2 between the lower fixing parts 34B are substantially the same. The pulling forces F5 and F6 are equally applied to the side edges 18 of the mask main body, so that lifting from the face is prevented. Further, since the first dimension N1 and the second dimension N2 are substantially the same size and are positioned along the vertical direction Y, the lower fixing part 34B is positioned in the width direction X of the upper fixing part 34A. The distance R5 between the upper fixing portion 34A and the lower fixing portion 34B is smaller than in the case where the position is displaced such as being located inside the lower fixing portion 34B. Therefore, the portion between the lower fixing portions 34B becomes relatively small, and an impression of a small face can be given.

  In order to exert such a small face effect when the mask 10 is worn, when mainly targeting an adult woman, the third dimension N3 is 120 to 140 mm, and the second dimension N2 and the third dimension. The total dimension with N3 is preferably 240 to 260 mm. When the second and third dimensions N2 and N3 are within the range of such dimensions, it is possible to give a sharp impression without giving too much downward curvature and giving a long impression.

  In the conventional mask 210, the first dimension N4 between the upper fixing parts 234A of the ear hook 230 is larger than the second dimension N5 between the lower fixing parts 234B, and they are displaced in the vertical direction Y. Therefore, the separation dimension R6 between the upper fixing portion 234A and the lower fixing portion 234B is larger than that of the mask 210. As a result, when the mask 210 is viewed from the front, the intermediate portion 222 may be vertically long, giving an impression that the mask 210 protrudes horizontally, which is larger than the actual face size.

<Modification 1>
Referring to FIG. 8, in the present modification, the both side edges 18 of the mask body 20 are notched at a position below the transverse center line Q and close to the lower fixing portion 34 </ b> B of the ear hook 30. The part (folding guide part) 70 is located. The notch 70 is substantially V-shaped and gradually becomes narrower inward in the width direction X from both side edges 20c, 20d, and the forces F1, F2 for deforming the side edges 18 in the notch 70 are applied. Can be absorbed and dispersed. By disposing the notch 70 below the transverse center line Q, the distance to the lower fixing portion 34B is shorter than when located above the center line Q, so that the upward force F2 can be easily absorbed and dispersed. However, the force F2 can be more reliably absorbed and dispersed by being positioned adjacent to the lower fixing portion 34B.

  In addition, the notch 70 extends inward in the width direction X across the side seal region 44 at both side edges 18. When the tip of the notch 70 is located in the side seal region 44, there is a possibility that slight deformation may occur between the notch 70 and the joint portion 41 located at the inner edge of the side seal region 44. By causing 70 to cross the side seal region 44 and the tip thereof to be located inward in the width direction with respect to the inner edge of the side seal region 44, it is possible to prevent such slight deformation. The notch 70 may have various known shapes such as one or a plurality of straight shapes and curved shapes.

<Modification 2>
Referring to FIG. 9, in the present modification, the notch 70 is located in the non-overlapping portion 29 located between the third collar part 28 </ b> C and the fourth collar part 28 </ b> D. As described above, the notch 70 is located in the non-overlapping portion 29 that is a low-rigidity low-rigidity region compared to the flanges 28A to 28E, and the non-overlapping portion 29 and the notch 70 are located in the vicinity of the lower fixing portion 34B. Since it is located, the force F2 that attempts to deform the side edges 18 can be more reliably absorbed and dispersed. Although not shown, the non-overlapping portion 29 may be formed in the lower end portion 23 and the notch 70 may be formed in the non-overlapping portion 29.

  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. . Further, terms such as “first” to “fourth” used in the present specification are simply 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 upper part of mask main body 23 Lower end part 24 Mouth covering part 28A-28D Bottom part 28E Lowermost brim part 29 Non-overlapping part 30 Ear hook part 31 Base end part (fixed end part) of the ear hook part
34A Upper fixing part 34B Lower fixing part 41 Joining part (seal part)
44 Side seal area (seal area)
70 Notch Q Transverse center line R1 Width dimension W1 between lower fixed parts Width dimension X in the vertical direction Width direction Y Vertical direction

Claims (8)

In a disposable mask having a vertical center and a width direction, 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 main body intermittently extends in the vertical direction along upper and lower ends where the upper and lower fixing portions of the pair of ear hooks are positioned, a mouth cover positioned between the upper and lower ends, and both side edges. A seal region in which a plurality of joints are disposed;
The mouth covering part and the lower end part have a collar part formed by folding a sheet forming the mask body,
The mask in which a value obtained by dividing the dimension in the width direction between the lower fixing parts of the pair of ear hooks by the dimension in the vertical direction of the collar part located between the lower fixing parts is 11 or more.   2. The mask according to claim 1, wherein a dimension in the width direction between the lower fixed parts is 120 to 135 mm, and a dimension in the vertical direction of the flange part is 6 to 11 mm.   3. The mask according to claim 1, wherein the flange portion has a shape that protrudes downward, and a lower edge that extends in the width direction does not overlap the lower fixing portion of the ear hook portion in plan view.   The mask according to any one of claims 1 to 3, further comprising a notch located below the transverse center line and extending inward in the width direction from both side edges of the mask body.   The mask according to claim 4, wherein the notch extends further inward in the width direction across the seal area.   The mask according to claim 4, wherein the notch is positioned in the vicinity of the lower fixing portion of the ear hook portion.   2. The at least one of the mouth covering part and the lower end part has a non-overlapping portion located between a pair of the flange parts that are spaced apart from each other in the vertical direction and formed by bending the sheet into a cross-sectional shape of Ω. The mask in any one of -6.   The mask according to claim 7, wherein the notch is located in the non-overlapping portion.

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