WO2017038211A1

WO2017038211A1 - Disposable mask

Info

Publication number: WO2017038211A1
Application number: PCT/JP2016/068217
Authority: WO
Inventors: 慶若杉; 柴田　彰; 龍一神山
Original assignee: ユニ・チャーム株式会社
Priority date: 2015-09-04
Filing date: 2016-06-20
Publication date: 2017-03-09
Also published as: PH12018550024A1; JP2017048489A; KR102677332B1; CN111053310A; CN108348018B; JP5937746B1; CN111053310B; JP5937748B1; KR20180048781A; CN108348018A; JP2017048490A

Abstract

Provided is a disposable mask in which a gap into which pollen, or powder dust, etc., in the air enters is not generated between a face and the mask body. In the disposable mask (10), a mask body (20) includes upper and lower end edges (20a, 20b), both side edges (20c, 20d), a face-contact part (22) for covering the mouth and nose of a wearer, and a jaw-contact part (23) protruding downward from the face-contact part (22) so as to have a protrudingly curved shape. Both ends of each of ear-hook parts (30) are fixed to the upper and lower end edge (20a, 20b) sides in the corresponding side portion of the face-contact part (22), and the jaw-contact part (23) includes a high rigidity area (55) which extends in the width direction (X) along a lower end edge (20b) and which has higher rigidity than other portions.

Description

Disposable mask

The present disclosure relates to disposable masks.

Referring to FIGS. 5 and 6, Patent Document 1 and Patent Document 2 respectively include a

face facing portion

222, 322 covering the mouth and nose of a wearer, and a jaw located below the

face facing portions

222, 322.

Disposable masks

200, 300 are disclosed comprising a

mask body

220, 320 having

portions

223, 323 and a pair of

annular ear hooks

230, 330 attached to opposite sides of the

mask body

220, 320.

Unexamined-Japanese-Patent No. 2010-279620 (P2010-279620) Unexamined-Japanese-Patent No. 2007-97904 (P2007-97904)

In the disposable mask 200 disclosed in Patent Document 1, both ends of the ear hooking portion 230 are fixed to an upper end portion which is a part of the face facing portion 222 and a lower end portion which is a part of the jaw portion 223. .

In the disposable mask 300 disclosed in Patent Document 2, the ear hooking portion 330 is attached to both sides of the face facing portion 322, and the lower end portion located in the jaw portion is rigid compared to the both-sides seal area 344 The low, unsealed area 340 is located.

Referring to FIG. 7B, in the mask 200 disclosed in Patent Document 1, both ends of the ear hooking portion 230 are fixed to the face facing portion 222 and the jaw portion 223 of the mask main body 220, The dimension R4 in the vertical direction Y of the ear hooking portion 230 is larger than the dimension R3 in the vertical direction Y of the wearer's ear 80, and the side edges of the mask body 220 do not contact the cheek in the wearing state. There is a possibility that a gap 250 may occur in which pollen, dust, etc. enter.

Referring to FIG. 7C, in the mask 300 disclosed in Patent Document 2, the low rigidity area including the non-sealed area 340 is positioned in the jaw portion 323 of the mask main body 320, whereby the mask 300 disclosed in FIG. The jaws 323 may be spaced apart from the wearer's jaws, and a gap 350 may occur between the jaws and the mask body 320 such that pollen or dust in the air may enter.

The present invention is an improvement of a conventional disposable mask, and has an object to provide a disposable mask in which no gap such as pollen or dust in the air is generated between the face and the mask body.

In order to solve the above problems, the present invention relates to a disposable mask having a vertical direction and a width direction and including a mask body and a pair of ear hooks.

In the disposable mask according to the present invention, the mask main body has upper and lower end edges, both side edges, a face contacting portion covering the mouth and nose of the wearer, and a jaw portion projecting downward from the face contacting portion. , And both ends of the ear hook portion are fixed to the upper and lower end edge sides at both side portions of the face facing portion, and the contact portion extends in the width direction along the lower end edge. Has a high rigidity area higher in rigidity than the part of

An upper fixing portion fixing one end of the ear hooking portion to the upper end edge side of both side portions of the face facing portion, and a lower fixing the other end of the ear hooking portion to the lower end edge side of both side portions of the facing face The vertical dimension between the fixing portion and the fixing portion is 50 to 70 mm, so that the spacing dimension and the vertical dimension of the wearer's ear are substantially the same, and the ear hooking portion is at the upper side and / or the lower side. It is possible to suppress the generation of a gap between the face and the mask body by being pulled.

Since the upper fixing portion and the lower fixing portion are arranged side by side in the vertical direction, as in the case where the first and second fixing portions are displaced from each other in the vertical direction, the ear hook portion By the tensile force applied to the lower fixed portion, the separation dimension between the lower fixed portions can be increased to prevent the formation of a gap between the face and the mask body.

The high-rigidity area is a single or a plurality of embossed lines extending along the outline line of the jaws, so that rounding up of the jaws can be suppressed, and the embossed lines can be formed. By controlling the size and pitch of the part, it is possible to adjust the range of high rigidity area and the degree of rigidity.

The contour line of the jaw portion includes a central portion extending linearly in the width direction, and a pair of side curved portions located on both sides of the central portion and extending in a curved shape from the both side edges to the central portion. Since the space between the lower end of the face facing portion and the central portion in the vertical direction is 8 to 14 mm, the round-shaped jaw portion fits along the line of the wearer's jaw to form a clearance Can be suppressed and, compared with the state where it does not fit, it can give a clear impression and expect a small face effect.

A first line extending in the width direction from first points located on both sides of the central portion, and a second point which is an intersection point of the first point, the lower end edge of the ear hook portion, and the inner edge of the lower fixed portion Since the crossing angle of the second line connecting is 10 to 40 degrees, the line on the face does not become too sharp in front view, and the wearer's face does not give an impression longer than it actually is .

Since the separation dimension in the vertical direction between the high rigidity area and the central region is 1 to 5 mm, it is possible to effectively prevent the lower end edge located below the high rigidity area from being worn during wearing. be able to.

Since the mass per unit area of the sheet forming a part of the jaw is larger than the mass per unit area of the sheet forming the facial part, the jaw is stable on the jaw of the wearer When fitted, the jaws move up and down together with the lips when speaking out.

The face-contacting portion has a ridge portion formed of a superimposed portion in which the sheet is folded, and a non-overlapping portion positioned between the ridge portions in the vertical direction, and the non-overlapping portion is the portion of the mask main body Because it is located below the transverse center line that divides the vertical dimension into two equal parts, it is applied to the fixed end located below the ear hook and in the vicinity thereof, absorbing the force that tends to pull it upwards, It can disperse | distribute and it can suppress that the both-sides edge of a mask main body floats up from a face and a clearance gap arises.

A first dimension which is a dimension in the width direction between the upper fixing portions of the pair of ear hooks, a second dimension which is a dimension in the width direction between the lower fixing portions of the pair of ear hooks, Since the correlation of the size of the third dimension, which is the dimension in the width direction of the lower end edge of the jaw portion, is third dimension> first dimension ≒ second dimension, the face facing portion does not become wide, It can give the impression of a small face with a sharp jaw.

When the second dimension is 115 to 135 mm, a total dimension of the second dimension and the third dimension is 240 to 260 mm. When the second dimension is 140 to 160 mm, a total dimension of the second dimension and the third dimension is 290 to 310 mm.

When the second dimension is 115 to 135 mm, the third dimension is 120 to 140 mm. When the second dimension is 140 to 160 mm, the third dimension is 145 to 165 mm.

Since the bending stiffness value of the jaw in the width direction is 0.06 or less, the jaw can be fitted along the jaw of the wearer.

According to the disposable mask according to one or more embodiments of the present invention, it is possible to prevent the mask main body from being separated from the wearer's face in the wearing state to form a gap where pollen, dust, etc. in the air enter. be able to.

The drawings illustrate specific embodiments of the present invention and include not only the essential features of the invention, but also optional and preferred embodiments.
The top view which looked at the disposable mask concerning the present invention from the front. The perspective view which cut | disconnected along the II-II line of FIG. 1, and looked at the one side of the mask from the outer surface. The top view of a mask main body. The side view of the mask in a wearing condition. The top view of the conventional disposable mask. The top view of other conventional disposable masks. (A) A view of the disposable mask according to the present invention worn obliquely from the rear, (b) a view of the conventional disposable mask worn from the oblique rear, (c) other conventional disposable masks A view from the diagonally rear of how the clothes were worn. The front view of the disposable mask in a wearing condition. (A) is a top view of the mask 10 which concerns on this invention, (b) is a top view of the conventional mask 400. FIG. 10A is a front view of the mask 10 in a worn state, FIG. 10B is a side view of the mask 10 in a worn state, and FIG. 10C is a front view of the conventional mask 400 in a worn state. (D) is a side view in the wearing condition of the conventional mask 400. Histogram for prior evaluation of the small face effect. Graph about the main evaluation of the small face effect. The top view which looked at the disposable mask in an example of a modification from the front.

The following embodiment relates to the disposable mask shown in FIGS. 1 to 13 and includes not only the essential configuration of the invention but also optional and preferable configurations.

With reference to FIGS. 1 to 3, a mask 10 shown as an example of the disposable mask of the present invention has a vertical direction Y and a width direction X, and has a skin facing surface and a non-skin facing surface facing it, vertical direction Y And a mask main body 20 and a pair of annular ear hooks 30 extending from both

side edges

20 c and 20 d of the mask main body 20.

The mask body 20 is formed from the base sheet 21 and has an upper end 20a extending straight in the width direction X, a lower end 20b extending slightly in the width direction X, and an upper and lower end 20a. , 20b, and both

side edges

20c, 20d extending in the vertical direction Y are provided. The lower end 20b of the mask main body 20 (the lower end of the jaw portion 23) is positioned on both sides of the central portion 19a extending straight in the width direction X and on both sides in the width direction X of the central portion 19a. A pair of side curved portions (both side portions) 19b and 19c extend in a curved shape from 20d to the central portion 19a. Further, the mask main body 20 has both side edge portions 18 located on the outer side in the width direction X from the inner side edges of the upper and

lower fixing portions

34A, 34B of the ear hooking portion 30.

Referring to FIGS. 2 and 3, the mask main body 20 is divided into a face facing portion 22 covering the wearer's mouth and nose, and a contact portion 23 protruding in a convexly curved shape downward from the face facing portion 22. In the present specification, the face facing portion 22 is between the

side edges

20c and 20d from the upper edge 20a to the vicinity of the upper and

lower fixing portions

34A and 34B for fixing the upper and

lower ends

31A and 31B of the ear hooking portion 30 in the vertical direction Y. It means an extended area, preferably an area from the upper end edge 20a in the vertical direction Y to the lower end edges of the upper and lower fixed

portions

34A, 34B. In the illustrated example, the boundary line M between the face contact portion 22 and the jaw portion 23 has a width between the lower end edges of the lower fixing portion 34B in consideration of the size of the mask main body 20, the size of the wearer's face, and the like. It extends in the direction X. The mask body 20 further has a curved corner 27 where the upper and

lower edges

20a, 20b and the

opposite edges

20c, 20d intersect. The corner 27 not having a pointed shape but having a curved shape does not cause irritation even when the wearer's face touches the corner 27.

The dimensions (length dimensions of both side edges 20c and 20d) W1 of the mask main body 20 (mask 10) in the vertical direction Y are 60 to 100 mm, and the dimensions in the width direction X (length dimensions of upper and

lower edges

20a and 20b) L1 are , 140-180 mm. When the dimension W1 in the vertical direction Y of the mask body 20 is 60 mm or less, the jaws of the standard size of the adult wearer can not be sufficiently covered, while the dimension W1 is smaller than 100 mm. If the size is large, the lower end of the mask main body 20 may be separated downward from the jaws, which may give an impression that is longer than it actually is in front view.

The base sheet 21 which forms the mask main body 20 is comprised from the inner-layer sheet 25 located in the skin opposing surface side, and the outer-layer sheet 26 located in the non-skin opposing surface side. The inner layer sheet 25 and the outer layer sheet 26 are bonded to each other by an outer peripheral seal area (an outer peripheral high rigidity area) 40 intermittently extending along the outer peripheral edge of the mask body 20. The outer peripheral seal area 40 is formed of a plurality of joint portions 41 arranged at predetermined intervals in the extending direction. The outer peripheral seal area 40 intermittently extends in the width direction X along the lower end edge 20 b and an upper seal area 42 formed of two lines intermittently extending in the width direction X along the upper edge 20 a of the mask body 20. It has a lower seal area 43 and a side seal area (seal area) 44 intermittently extending in the vertical direction Y along the side edges 20c and 20d.

The inner layer sheet 25 and the outer layer sheet 26 are, for example, air-permeable fibrous nonwoven sheets having a mass of 10 to 40 g / m ² and containing heat fusible fibers, and are meltblown fibrous nonwoven fabrics, spunbonded fibrous nonwoven fabrics, SMS fibrous nonwoven fabrics In addition to various known fiber non-woven fabrics such as air-through fiber non-woven fabric, it can be formed from sheet material having good breathability such as gauze and cotton cloth. Although not shown, an intermediate sheet having a filter function of fine particles or containing an antibacterial agent, a fragrance and the like may be interposed therebetween. The ear hooking portion 30 is preferably elastically stretchable, and is formed of a known elastic material such as a non-woven fabric, a woven fabric, a plastic film, a rubber band or the like.

The outer peripheral seal area 40 is a welding seal line for welding the inner layer sheet 25 and the outer layer sheet 26 to each other at a plurality of intermittently arranged joints 41, and both sheets 25 and 26 are bonded only in the outer peripheral seal area 40. And are not joined to one another in other parts. Therefore, the entire mask 10 is excellent in flexibility and air permeability as compared to the case where the entire inner surfaces of both sheets 25 and 26 are bonded to each other.

Referring to FIG. 2, the joint portion 41 of the outer peripheral seal area 40 has a substantially rectangular shape defined by a pair of short sides and a pair of long sides, and in the upper seal area 42 and the lower seal area 43. The joint portion 41 is disposed such that the long side extends in the width direction X, and two seal lines extending in the vertical direction Y are formed. Further, the separation dimension in the vertical direction Y between the seal lines of the upper seal area 42 is larger than the separation dimension in the vertical direction Y between the seal lines of the lower seal area 43.

An elastic strip (nose fit) 60 extending in the width direction X is disposed between the seal lines of the upper seal area 42. The elastic strip 60 is interposed between the inner layer sheet 25 and the outer layer sheet 26. Specifically, the elastic strip 60 is held in a cylindrical space formed between two seal lines forming the upper seal area 42. It is fixed. A bonding portion 41 for restricting the movement of the elastic strip 60 in the width direction X is disposed outside the width direction of both ends of the elastic strip 60.

The upper and lower end edges of the inner layer sheet 25 extend outward in the vertical direction Y more than the upper and lower end edges of the outer layer sheet 26, and the vertically extending

portions

25a and 25b are bent inward in the vertical direction Y. It is fixed to the non-opposite side of the outer layer sheet 26 by the upper seal area 42 and the lower seal area 43.

The ear hooking portion 30 has a pair of upper and lower ends (both ends) 31A and 31B located at the upper end portion and the lower end portion of the mask body 20, and a free portion 32 annularly extending between the upper and

lower ends

31A and 31B. The upper end 31A is fixed on the upper end edge 20a side of the mask main body 20 via the upper fixing portion 34A, and the lower end 31B is fixed on the lower end edge 20b side by the lower fixing portion 34B. The upper and

lower fixing portions

34A and 34B have a rectangular shape which is larger than the outer shape of the upper and

lower ends

31A and 31B and has a mesh-like embossed pattern, and welds or adheres the upper and

lower ends

31A and 31B to the mask main body 20. The upper and

lower ends

31A, 31B have the required peel strength with respect to the mask main body 20 by the upper and lower fixed

portions

34A, 34B being larger than the outer shape of the upper and

lower ends

31A, 31B. Even if the force to peel it off acts on it, it does not peel off easily. In addition, a part of the upper and

lower fixing parts

34A and 34B overlaps the joint part 41 forming the upper and

lower seal areas

42 and 43, and the joint strength is higher in such an overlapping part. The upper and

lower ends

31A, 31B of the ear hooking portion 30 are fixed to the non-skin facing surface of the mask main body 20 by the upper and

lower fixing portions

34A, 34B. By fixing both ends of the free portion 32 to the non-skin facing surface of the mask main body 20, both ends of the free portion 32 act to press the mask main body 20 against the face in the worn state. Adhesion can be improved.

The face-contacting portion 22 of the mask main body 20 has a plurality of ridges 28 extending in the width direction X and formed by bending the base sheet 21 in a pleated shape. The ridges 28 are, in order from the upper side, first to third ridges 28A to 28C that are convex upward on the non-skin facing surface side of the mask main body 20, and a convex downward on the third ridge 28C. And 4) ridge portion 28D. The base sheet 21 is bent into a cross-sectional shape of Ω at the third ridge portion 28C and the fourth ridge portion 28D. Therefore, below the crossing center line Q, the base sheet 21 is folded, and it is located between the third ridge portion 28C and the fourth ridge portion 28D, the overlapping portion 29A in which the base sheet 21 is stacked in a plurality, A non-overlapping portion 29B having a single-layer structure in which the material sheet 21 is not folded is located.

Referring to FIGS. 1 and 3, the jaws 23 of the mask body 20 have a high rigidity region 55 which is stiffer than the other portions of the jaws 23 and extends in the width direction X along the lower edge 20b. . In the present embodiment, the high rigidity area 55 is formed of the lower seal area 43. The jaw portion 23 has a central portion 19a extending straight in the width direction X, and a pair of side curves located on both sides in the width direction X of the central portion 19a and extending in a curved shape from both side edges 20c and 20d to the central portion 19a. An outer shape line (an outer shape line of the lower end edge 20b) is formed by the

third portions

19b and 19c. A separation dimension (maximum dimension in the vertical direction Y of the jaw portion 23) W2 of the lower end (the same as the boundary line M) of the face facing portion 22 and the central portion 19a is 8 to 14 mm. In the present embodiment, the high rigidity area 55 of the jaw portion 23 is the lower seal area 43 consisting of one or more embossed lines extending along the outline line, but instead of such embossed lines, the base sheet By partially increasing the mass of 21 or attaching a separate sheet member, it may have high rigidity as compared with other parts.

Further, in the jaw portion 23, the separation dimension R1 in the vertical direction Y between the high rigidity region 55 and the central portion 19a is 1 to 5 mm. The separation dimension in the vertical direction between the upper seal region 42 and the upper end edge 20a forming the outer peripheral seal region 40, and the separation dimension in the width direction X between the side seal region 44 and both side edges 20c and 20d are 2 to 7 mm. On the other hand, the high rigidity region 55 is formed in the outer peripheral seal region 40 located at the outer peripheral edge portion of the mask main body 20, with the separation dimension R1 in the vertical direction Y between the high rigidity region 55 and the central region 19a being 1 to 5 mm. The lower seal area 43 is located closest to the outer edge of the mask body 20. By having such an arrangement manner, the outer peripheral seal area 40 can effectively prevent the floating of the lower end edge extending downward from the high rigidity area 55 in the worn state.

At the lower end of the jaw portion 23, the lower extension 25b of the inner layer sheet 25 is fixed to the non-skin facing surface side of the outer layer sheet 26, so that the other portion of the mask main body 20 (upper extension of the inner layer sheet 25) The laminated part in which the mass per unit area of the base material sheet 21 is larger than the part in which the part 25a is arrange | positioned is located. At the lower end of the jaws 23, by positioning the high rigidity region 55 overlapping with the laminated portion, the rigidity becomes partially higher, and the jaws 23 are fitted more stably to the jaws of the wearer. In particular, even if the wearer moves his / her jaw up and down with his / her lip when speaking, there is no risk that the jaws 23 will be displaced.

4 is a side view of the disposable mask 10 in a worn state, FIG. 5 is a plan view of a conventional disposable mask (the mask described in Patent Document 1), and FIG. 6 is another conventional disposable mask (Patent Document 2) 7 (a) is a perspective view of the disposable mask 10 worn from the rear, and FIG. 7 (b) is a conventional disposable mask 200 worn. It is the figure which looked at the mode from diagonally back, (c) It looked at the mode that other conventional disposable masks 300 were worn from diagonally back.

Referring to FIG. 7 (b), the conventional mask 200 includes a mask body 220, a pair of annular ear hooks 230 extending from both side edges of the mask body 220, and a face facing portion 222 covering the mouth and nose of the wearer. It has a jaw 223 opposed to the lower jaw of the wearer. In the conventional mask 200, the outer peripheral seal area including the upper and

lower seal areas

242 and 243 and the both-side seal areas 244 is disposed, and the central portion 219a whose outer shape of the jaw portion 223 extends straight in the width direction X; It is formed of curved side curved

portions

219b and 219c located on both sides of the central portion 219a.

Referring to FIG. 7C, the conventional mask 300 includes a mask body 320, a pair of annular ear hooks 330 extending from both side edges of the mask body 320, and a face facing portion 322 covering the mouth and nose of the wearer. And a jaw part 323 located below it. In the conventional mask 300, both-sides seal areas 344 located on both sides of the mask body 320 are disposed, and the outer shape of the jaw portion 323 has a central portion 319a linearly extending in the width direction X and a central portion 319a. It is formed of curved side curved

portions

319 b and 319 c located on both sides.

In the wearing condition of the conventional

disposable masks

200 and 300, a force F3 directed from the center to the both sides of the

face facing parts

222 and 322 with which the wearer's nose abuts, and an ear hook 230 wound around the ear 80. , 330, and a downward force F1 acts on the

upper fixing parts

234A and 334A of the ear hooks 230 and 330. On the other hand, a force F4 directed from the central portion to the both sides of the

jaws

223 and 323 with which the wearer's jaws are abutted and a force F6 pulling the

free portions

232 and 332 of the ear hooks 230 and 330 occur. Thus, an upward force F2 acts on the

lower fixing portions

234B and 334B of the ear hooks 230 and 330.

At both side edges of the mask

main body

220, 320 of the conventional

disposable mask

200, 300, the downward force F1 from the

upper fixing portion

234A, 334A and the upward force F2 from the

lower fixing portion

234B, 334B face each other The two side edges may be separated from the face to cause a gap. In such a case, if the forces F1 and F2 can be dispersed and absorbed at a part of both side edges, deformation can be suppressed, but the both side edges of the mask

main body

220 and 320 can be sealed by the both

side seal areas

244 and 344. Due to the position of the high rigidity region, these forces F1 and F2 can not be sufficiently absorbed and dispersed to escape.

In the conventional disposable mask 200, while the forces F1 and F2 acting on the upper and

lower fixing portions

234A and 234B increase in proportion to the size of their separation dimension R4, the upper fixing portion 234A of the ear hook portion 230 The lower fixing portion 234B is located at the contact portion 222 of the mask main body 220, and the separation dimension R4 of the lower fixing portion 234B is relatively large. Specifically, the separation dimension R4 is 70 to 90 mm. Therefore, the pulling forces F5 and F6 acting on the upper and

lower fixing portions

234A and 234B become larger, and the forces F1 and F2 going upward and downward also become larger, and both sides of the mask main body 220 become more easily deformed. There is a risk of separation from the face. In addition, since the upper and

lower fixing portions

234A and 234B of the ear hooking portion 230 are located outside the width direction of the both-sides seal area 244 in the face facing section 222, the outer edge located outside the both-sides seal area 244 in the width direction The upward force F2 acts on 260 to make it easy to lift up from the face. Furthermore, since the lower fixing portion 234B of the ear hook portion 230 is fixed to the lower side of the relatively curved side curved

portions

219b and 219c, the lower fixing portion 234B is positioned inside in the width direction of the upper fixing portion 234A. As described above, the upper and

lower fixing portions

234A and 234B are not arranged side by side in the vertical direction, so that the separation dimension R4 is larger than when they are arranged side by side. From the above structural problems, it can be said that a gap 250 in which pollen, dust and the like in the air enter is likely to be formed between the side edges of the mask main body 20 and the face.

6 and 7C, in the conventional disposable mask 300, the separation dimension R5 between the upper and

lower fixing portions

334A and 334B of the ear hook portion 330 is compared to the dimension R3 in the vertical direction Y of the ear 80. Although not so large, the forces F5 and F6 acting on the free part 332 do not become too large, but the non-sealed area 340 where the seal area does not exist is located in the jaw portion 323, compared to the other parts. High rigidity area is not formed. Therefore, there is a possibility that a gap 350 in which pollen and dust in the air enter may be generated between the jaws and the entire jawed part 323 floating up from the face during wearing.

Referring to FIG. 4, in the disposable mask 10 according to the present embodiment, as in the case of the conventional

disposable masks

200 and 300, the force from the central portion of the face facing portion 22 toward the sides of the wearer's nose is abutted. A downward force F1 acts on the upper fixed portion 34A due to the generation of a force F5 that pulls the free portion 32 of the ear hook unit 30 rearward and F3. On the other hand, the force F4 directed from the center to the both sides of the jaw 23 in contact with the jaws of the wearer and the force F6 to pull it diagonally upward at the free part 32 of the ear hook 30 act. An upward force F2 acts on the fixing portion 34B.

In the disposable mask 10 according to the present embodiment, the upper and

lower fixing portions

34A and 34B of the ear hooking portion 30 are located on both sides of the face facing portion 22, and the mutual separation dimension R2 is about 50 to 70 mm. The size is approximately the same as the vertical dimension R3 of the ear 80 of the adult wearer. The dimension R3 of the adult wearer's ear 80 in the vertical direction Y is 50 to 70 mm on average, although there are individual differences, and the size of the separated dimension R2 is within such a range Forces F5 and F6 pulling the free portion 32 of the ear hooking portion 30 in the vertical direction Y extend substantially parallel to the ear 80 and both sides of the mask main body 20 acting on the upper and lower fixed

portions

34A and 34B as compared with the conventional mask 200. It is possible to suppress the force to deform the part.

Further, in the disposable mask 10, the high rigidity region 55 is disposed in the jaw portion 23, so that a force acting to deform it in the lower fixing portion 34B of the ear hook portion 30 and the vicinity acts in the wearing state. However, the jaws 23 do not rise apart from the jaws. In addition, since the separation dimension R1 in the vertical direction Y between the high rigidity area 55 and the central portion 19a of the lower end edge 20b is 1 to 5 mm and is relatively small, a portion extending downward from the high rigidity area 55 is lifted. It is not. Furthermore, since the upper and lower fixed

portions

34A and 34B of the ear hooking portion 30 are arranged side by side in the vertical direction Y (without positional deviation in the width direction X), they are displaced and the separation dimension R2 is large. It will never be.

With reference to FIG. 7A, the disposable mask 10 has such a configuration, so that in the wearing state, both side portions of the face facing portion 22 and the jaw portions 23 are fitted to the wearer's face, and There is no possibility that gaps such as pollen, dust and the like in the inside directly enter the inside of the mask 10. The mask 10 has a single-layer structure located between the ridge portion 28C and the ridge portion 28D formed of the overlapping portion (high rigidity region) 29A formed by folding the base sheet 21 in the face facing portion 22. By arranging the overlapping portion (low rigidity region) 29B below the transverse center line Q, the upward force F2 acting on the lower fixed portion 34B can be absorbed and dispersed in the non-overlapping portion 29B. . By absorbing and dispersing the force F2 applied to the non-overlapping portion 29B, deformation at both side portions of the face facing portion 22 can be suppressed.

Referring again to FIG. 3, in the jaw portion 23 of the mask 10, the first line K 1 extending in the width direction X from the first point P 1 located on both sides of the central portion 19 a, the first point P 1 and the free portion 32 An intersection angle θ1 of a second line K2 connecting a second point P2 which is an intersection point of the lower end edge and the inner edge of the lower fixed portion 34B is 10 to 40 degrees. On the other hand, referring to FIG. 5, in the conventional mask 200, the first line K1 extending in the width direction from the first point P1 located on both sides of the central portion 219a, the lower end edge of the first point P1 and the free portion 232, and The intersection angle θ2 with the second line K2 connecting the second point P2 which is the point of intersection with the fixing portion that fixes the angle .alpha. Further, referring to FIG. 6, in the face facing portion 322 of the conventional mask 300, a first line K1 extending in the width direction from a first point P1 located on both sides of the central portion 319a, a first point P1 and a free portion 332. The intersection angle θ3 of the second line K2 connecting the lower end edge of the second point P2 and the second point P2 that is the intersection point of the lower end edge of the second part and the fixing portion fixing the lower end edge is about 25 degrees.

Referring to FIG. 8, in the front view of the disposable mask 10 in the worn state, when the jaw 23 has a round shape along the contour of the jaw of the wearer, the jaw 23 does not follow the contour of the jaw. It gives a clearer impression. Here, in order to fit the jaw portion 23 to the jaw portion and to give a clear impression, it is preferable that the crossing angle θ1 in the jaw portion 23 be at least 40 degrees or less, and more preferably 35 degrees or less. As in the case of the conventional mask 200, when the crossing angle θ2 is 45 degrees or more, the contact portion 23 becomes too sharp, and the wearer's face is longer than it actually is, compared to before the mask 10 is worn. It may give an impression. On the other hand, as in the case of the conventional disposable mask 300, when the side curved

portions

319b and 319c of the jaw portion 323 are straight, even if the crossing angle θ3 is 35 degrees or less, the entire jaw is covered. It can not follow the outline. The mask 10 according to the present embodiment is cleaner than the contour line of the actual face by having a slightly sharper shape in the range from the lower cheek to the tip of the chin along the outline line of the wearer's chin It will be an impression.

As described above, the mask 10 according to the present embodiment is unlikely to generate a gap such as pollen or dust in the air between the mask body 20 and the face in the wearing state, and the angle of intersection θ1 in the front view Is in the range of 10 to 40 degrees, so that both

side edges

20c, 20d have a gentle parabola shape in which they are concavely curved in the low rigidity region, and a shape in which the face portion is appropriately rounded. As a result, the area from the lower cheek to the chin gives a clearer impression than the actual face line, and it is possible to exert a small face effect such that the size of the face is smaller than the actual size.

side edges

9 (a) is a plan view of the mask 10 according to the present invention, FIG. 9 (b) is a plan view of a conventional mask 400, and FIG. 10 (a) is a front view of the mask 10 in a worn state, FIG. 10B is a front view of the conventional mask 400 in the worn state, and FIG. 10D is a side view of the conventional mask 400 in the worn state. is there.

Referring to FIG. 9A, in the mask 10 according to the present invention, since the upper fixing portion 34A and the lower fixing portion 34B are arranged side by side in the vertical direction Y, a dashed dotted line passing through the inner edge thereof The (virtual lines) T1 and T2 extend in parallel in the vertical direction Y. The first dimension N1 which is the dimension in the width direction X between the upper fixing portions 34A of the ear hook 30 and the dimension in the width direction X between the lower fixing portions 34B of the ear hook 30 between the dashed dotted line T1 and T2 of the mask 10 The correlation between the second dimension N2 and the third dimension N3 which is the dimension in the width direction X of the lower end edge of the lower jaw 23 is N3> N1 ≒ N2.

Referring to FIG. 9 (b), the conventional mask 400 has a mask body 420, a pair of annular ear hooks 430 extending from both side edges 420c and 420d of the mask body 420, and a face covering the mouth and nose of the wearer. It has a portion 422 and a jaw portion 423 facing the lower jaw of the wearer. In the conventional mask 400, while the upper edge 420a extends straight in the width direction X, the lower edge 420b is directed toward the straight region on both sides of the straight region located at the central portion and the straight region. The outer contour is defined by the inclined portion extending downward. In the conventional mask 400, since the upper fixing portion 434A and the lower fixing portion 434B of the ear hooking portion 430 are misaligned in the vertical direction Y, a dashed dotted line (virtual line) T1, T1 passing through the inner edge thereof. T2 extends in the cross direction with an inclination toward the central portion in the width direction X. The first dimension N4, which is the dimension in the width direction X between the upper fixing portions 434A between the ear hooks 430, and the dimension in the width direction X between the lower fixing portions 434 B between the ear hooks 430, between the alternate long and short dash lines T1 and T2 of the mask 400 The correlation between the second dimension N5, which is the second dimension N5, and the third dimension N6, which is the dimension in the width direction X of the lower end edge of the jaw portion 423, is N4> N6> N5.

10A and 10B, in the mask 10 according to the present invention, the first dimension N1 between the upper fixing portion 34A of the ear hooking portion 30 and the second dimension N2 between the lower fixing portion 34B are the same. Since they are substantially the same, the rearward pulling forces F5 and F6 at the ear hooks 30 uniformly act on the side edges 18 of the mask body, and the floating from the face is prevented. In addition, since the first dimension N1 and the second dimension N2 are substantially the same size and they are positioned in line in the vertical direction Y, the lower fixing portion 34B is in the width direction X of the upper fixing portion 34A. The separation dimension R5 between the upper fixed portion 34A and the lower fixed portion 34B is smaller than in the case where the inner fixed position is shifted to the inner side. Therefore, the face facing part 22 between the lower fixed parts 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, it mainly depends on the size of an adult woman, and although it varies depending on the size, when the second dimension N2 is 115 to 135 mm, the second dimension N2 And the third dimension N3 is 240 to 260 mm, and the second dimension N2 is 140 to 160 mm, the total dimension of the second dimension N2 and the third dimension N3 is 290 to 310 mm. Alternatively, when the second dimension N2 is 115 to 135 mm, the third dimension N3 is 120 to 140 mm, and when the second dimension N2 is 140 to 160 mm, the third dimension N3 is 145 to 165 mm. By having the second and third dimensions N2 and N3 in the range of such dimensions, it is possible to give a sharp impression without excessively curving downward and giving an impression longer than actual.

Further, as described above, since the jaw portion 23 has a round shape along the contour of the wearer's jaw, the shape is convex downward in a front view. The fixed position of the upper and

lower fixing portions

34A and 34B of the ear hooking portion 30 and the outline of the mask main body 20 have a feature that allows the point U1 located between the

lower fixing portions

34B and 34B and the center of the lower end edge 20b to be The base 95a (the line connecting the lower fixing portions 34B) of the connecting inverse triangle 95 is at a relatively high position, and the internal angle θ4 on the point U1 side is relatively small.

Referring to FIG. 10C, in the conventional mask 400, the first dimension N4 between the upper fixing portions 434A of the ear hook portions 430 is larger than the second dimension N5 between the lower fixing portions 434B, and they are upper and lower Because of the positional deviation in the direction Y, the separation dimension R6 of the upper fixed portion 434A and the lower fixed portion 434B is larger than that of the diaper 10. As a result, in the front view of the mask 400, the face-faced part 422 may become vertically long and give an impression that it is larger than the size of the actual face and that it protrudes laterally. Further, since the lower end edge 420b of the mask body 420 is not round and the third dimension N6 is smaller than the first dimension N4, a point U2 located between the lower

fixed portions

434B and 434B and at the center of the lower end edge 420b. The base 495a (the line connecting the lower fixing portions 34B) of the inverted triangle 495 connecting the two is at a relatively low position, and the internal angle θ5 on the point U2 side is relatively large. Therefore, the lower part of the conventional mask 400 is wider than the lower part of the mask 10, and the outline of the face may give a relatively large impression on the whole. In the conventional mask 200 as well, similarly to the conventional mask 400, the upper fixing portion 234A and the lower fixing portion 234B are misaligned in the vertical direction Y, and the separation dimension between the upper fixing portions 234A is Because it is larger than the size of the lower end edge of the mask body 220, when worn, it may give an impression that the face is wider than it actually is in front view. Further, in the conventional mask 300, since the lower end edge is not round, it does not have a shape which is curved downward like the mask 10, and it is not possible to visually give a sharp impression of the outline of the face.

Moreover, it is preferable that the bending rigidity value (KES bending rigidity value) in the width direction X of the jaw portion 23 of the mask 10 is 0.06 gf · cm ² / cm or less. When the rigidity value of the jaw portion 23 is relatively high, it can not conform to the shape of the wearer's jaw, and there is a possibility that a gap may be formed due to the movement of the jaw, but the bending rigidity value By being less than or equal to 0.06 gf · cm ² / cm, it is possible to keep the jaws 23 deformed and fitted to the jaws according to the movement of the jaws.

<Method for evaluating small face effect>
<Pre-evaluation method>
First, as a material to be used for pre-evaluation, 540 pieces of photo images of the face of a Japanese woman (photographed above the shoulder), a 24-inch liquid crystal display, a head mannequin (standard for Japanese women in their twenties A facial model with a size, Bioskindor F-300S, View Lux) was prepared. Next, a pre-evaluator (a total of 36 men and women aged 18 and over) was placed in a chair 60 cm away from the screen of the liquid crystal display placed on the desk. On the screen of the liquid crystal display, an image photograph is displayed in a predetermined size (a JPEG image of 354 × 472 pixels, 9.8 cm long × 13.07 cm wide), and a head mannequin is disposed beside the liquid crystal display. The pre-evaluator contrasts the photo image A displayed on the screen of the liquid crystal display with the head mannequin and compares the size of the face of the head mannequin with the face size of 50 (point). Evaluation was made in the range of 1 to 100 (the larger the number, the larger the face), and was used as the prior evaluation value. The pre-evaluator showed the pre-evaluation value by operating the mouse of the PC main body connected to the liquid crystal display with one hand and moving the cursor to an appropriate number on the visual analog scale. In addition, about the evaluation order of the image photograph by each evaluator, and evaluation number of sheets, it carried out at random.

The prior evaluation value by each prior evaluator was totaled for every photography image, and the average value was computed. Note that the number of evaluators was different for each photographic image, and on average, 18 persons evaluated one photographic image. FIG. 11 shows a histogram created on the basis of the prior evaluation values (the vertical axis is the frequency, and the horizontal axis is the class of the size of the face in appearance), and the average value of the distribution is 51.3, standard The deviation was 7.7, the minimum was 32.5, and the maximum was 77.6. 22 photo images (small faces) in ascending order from the minimum value of this distribution, 22 photo images (faces of average size) from average value, 22 photo images (large face) in descending order from maximum value A total of 66 photograph images (photograph image A) of were used as the images used in the following evaluation.

<This evaluation method>
A photographic image A prepared in advance and a photographic image B in which the mask 10 was worn on the face of the photographic image A by image editing software were prepared. This evaluator (a total of 11 men and women aged 18 and over, who are different from the pre-assessor) has 66 photo images (33 photo images A and B each) under the same conditions as the pre-evaluation method. The size of the appearance face was evaluated one by one. At the time of main evaluation, adjustment was made so that each main evaluator would not evaluate both the photographic image A and the photographic image B by the same person. The photographic images A and B evaluated by each main evaluator were randomly selected. The main evaluation value obtained by the main evaluation is 6 of the presence or absence of the mask 10 (photo image A, photo image B) × original face size (small face, average face size, large face) The data were tabulated for each condition, and the average value and its standard error were calculated.

<This evaluation result>
Referring to FIG. 12, in “a small face in a state where the mask 10 is not worn”, the average of the main evaluation values when not worn is 40.5, whereas the evaluation value in a state where the mask 10 is worn The average of was 33.5. In addition, even in "a face of average size in the state of not wearing the mask", the average of the main evaluation value when not wearing is 53.3, whereas this evaluation value in the state of wearing the mask 10 Even in the case of an average of 44.8, "a face that is large in the state of not wearing the mask", this evaluation value in the state of wearing the mask 10 while the average of the present evaluation value when not wearing is 70.6. The average size was 63.1, and in any case, regardless of the size of the face without wearing the mask 10, when the mask 10 was worn, the apparent size of the face felt small .

In addition, when the two-factor analysis of variance with respect to the six conditions described above is performed on the main evaluation value obtained by the main evaluation, the main effect (F (1, 10) = 10.40, p = 0) of the presence or absence of the mask 10 .09), the main effect of the original face size (F (2, 20) = 91. 55, p = 0.01) and statistically significant results could be obtained. An interaction between the presence of the mask 10 and the size of the original face was not observed. Therefore, regardless of the size of the original face, it is possible to obtain the statistical result that the face wearing the mask 10 looks smaller (looks like a small face) than the face not wearing it.

<Modification>
FIG. 13 is a plan view of the disposable mask 10 in an example of a modification viewed from the front. In the present modification, the non-sealed area 91 in which the bonding portion 41 is not disposed is located in the non-overlapping portion (low rigidity area) 29B. Thus, by arranging the non-sealed region 91 in the non-overlapping portion 29B, the rigidity of the non-overlapping portion 29B can be made lower than that of the overlapping portion 29A located adjacently in the vertical direction, The upward force F2 can be reliably absorbed and dispersed in the non-overlapping portion 29B. In addition, a wide bonding area 92 in which the bonding portions 41 are arranged in the width direction X is located below the non-sealed area 91. In this manner, by the wide junction area 92 being positioned below and adjacent to the non-overlapping portion 29B, the upward force F2 can be received in a wide range in the non-overlapping portion 29B and absorbed and dispersed.

Thus, the non-sealed area 91 is for assisting the function of the low rigidity area as a bending guide. In order to exhibit such an effect, it is preferable that the dimension in the vertical direction Y of the non-sealed area 91 is larger than the separation dimension (pitch) between the plurality of joint portions 41 of the side seal area 44. When the dimension of the non-sealed area 91 in the vertical direction Y is equal to or smaller than that between the joined portions 41, the upward force is not in the non-sealed area 91 but in the separated portion between the joined portions 41 in the side seal area 44. This is because there is a possibility that F2 is absorbed, dispersed and bent, and there is a possibility that the entire mask main body 20 can not be curved in a predetermined shape.

In addition to the materials described herein, known materials commonly used in this type of field can be used without limitation for the members constituting the mask 10, unless otherwise specified. . Also, the terms "first" and "second" as used herein are used merely to distinguish similar elements, locations, and the like.

10 disposable mask (mask)
19a

central portion

19b, 19c side curved portion 20 mask main body 20a upper end edge 20b of mask main body lower end edge 20c of mask

main body

20c, 20d side edge 22 of mask main body facing portion 23 contact portion 28A to 28D ridge portion

29A overlapping portion

29B Non-overlapping portion 30

Ear hook portion

31A, 31B Ear hook portion upper and lower ends 34A, 34B Upper and lower fixing portion 40 Outer peripheral seal area 43 Lower seal area 41 Joint 55 High rigidity area K1 First point located on both side edges of central area Second line K2 extending in the width direction from the second line connecting the first point and the second point which is the intersection point of the lower end edge of the free part and the inner edge of the lower fixed part First dimension N2 of direction N2 second dimension N3 of width direction between lower fixing parts of ear hook section third dimension P3 which is dimension of width direction of lower end of jaw portion P1 located at both side edges of central portion P2 both sides Top edge of site Point to position Q transverse center line R1 rigidity region and spaced distance X width direction Y vertical direction θ1 crossing angle from the lower end of the separation dimension W2 face seal in the vertical direction Y in the central site to the central site

Claims

A disposable mask having a vertical direction and a width direction and including a mask body and a pair of ear hooks,
The mask body has upper and lower end edges, both side edges, a face contacting portion covering the wearer's oronators, and a jaw portion projecting in a convexly curved shape downward from the face contacting portion.
Both ends of the ear hooking portion are fixed to the upper and lower end edges at both side portions of the face facing portion,
The mask, wherein the jaws extend in the width direction along the lower edge, and have a high rigidity area that is higher in rigidity than the other portions.
An upper fixing portion fixing one end of the ear hooking portion to the upper end edge side of both side portions of the face facing portion, and a lower fixing the other end of the ear hooking portion to the lower end edge side of both side portions of the facing face The mask according to claim 1, wherein the distance between the fixing portion and the fixing portion in the vertical direction is 50 to 70 mm.
The mask according to claim 1, wherein the upper fixed portion and the lower fixed portion are arranged side by side in the vertical direction.
The mask according to any one of claims 1 to 3, wherein the high rigidity region is one or a plurality of embossed lines extending along an outline line of the jaws.
The contour line of the jaw portion includes a central portion extending linearly in the width direction, and a pair of side curved portions located on both sides of the central portion and extending in a curved shape from the both side edges to the central portion. The mask according to any one of claims 1 to 4, wherein the vertical dimension between the lower end of the face portion and the central portion is 8 to 14 mm.
A first line extending in the width direction from first points located on both sides of the central portion, and a second point which is an intersection point of the first point, the lower end edge of the ear hook portion, and the inner edge of the lower fixed portion The mask according to claim 5, wherein an angle of intersection of a second line connecting the two is 10 to 40 degrees.
7. The mask according to claim 5, wherein a separation dimension between the high rigidity area and the central portion in the vertical direction is 1 to 5 mm.
The mask according to any one of claims 1 to 7, wherein a mass per unit area of the sheet forming a part of the jaws is larger than a mass per unit area of the sheet forming the facial part.
The face-contacting portion has a ridge portion formed of a superimposed portion in which the sheet is folded, and a non-overlapping portion positioned between the ridge portions in the vertical direction, and the non-overlapping portion is the portion of the mask main body The mask according to any one of claims 1 to 8, which is located below a transverse center line which bisects the vertical dimension.
A first dimension which is a dimension in the width direction between the upper fixing portions of the pair of ear hooks, a second dimension which is a dimension in the width direction between the lower fixing portions of the pair of ear hooks, The mask according to claim 2, wherein the correlation of the size of the third dimension which is the dimension in the width direction of the lower end edge of the jaw portion is 3rd dimension> first dimension ≒ second dimension.
When the second dimension is 115 to 135 mm, the total dimension of the second dimension and the third dimension is 240 to 260 mm, and when the second dimension is 140 to 160 mm, the second dimension and the first dimension The mask according to claim 10, wherein a total dimension of the three dimensions is 290 to 310 mm.
11. The apparatus according to claim 10, wherein the third dimension is 120 to 140 mm when the second dimension is 115 to 135 mm, and the third dimension is 145 to 165 mm when the second dimension is 140 to 160 mm. mask.
The mask according to any one of claims 1 to 11, wherein a bending rigidity value in the width direction of the jaw portion is 0.06 gf · cm 2 / cm or less.