JP6356371B1 - Disposable mask - Google Patents

Abstract

Disclosed is a disposable mask that does not cause a strong irritation to the skin of a wearer even if both sides of the mask body come into contact with the skin. A disposable mask 10 according to the present invention includes a mask body 20 having a vertical direction Y and a width direction X, having a mouth-nose covering portion 21, and a pair of ear hooks attached to both side portions 22 of the mask body 20. 40. Both ends of the ear hooking portion 40 are fixed to the mask main body 20 via an upper fixing portion 61 and a lower fixing portion 62 that are located on the sides of the mask main body 20 and are separated in the vertical direction Y. Both side portions 22 of the mask main body 20 are adjacent to the upper fixing portion 61 and the lower fixing portion 62, respectively, and projecting toward the rear side (upward convex portion 51 and lower convex portion 52) and a pair of convex portions. And a concave portion (concave curved portion 53) which is located between the convex portions (upward convex curved portion 51 and downward convex curved portion 52) and is recessed toward the front side. The contours of the pair of convex portions (upward convex portion 51 and downward convex portion 52) and the concave portion (concave portion 53) have a curved shape, and the curvature radius of the contour of the concave portion (concave portion 53) is a pair. It is smaller than the radius of curvature in the contour of the convex portion (upward convex curved portion 51 and downward convex curved portion 52). [Selection] Figure 3

Description

  The present invention relates to a disposable mask.

  Patent Document 1 discloses a disposable mask having a mask body formed of a thermoplastic fiber nonwoven fabric and cotton gauze, and a pair of ear hooks extending in an annular shape from both side edges of the mask body.

  According to this mask, the mask body can be easily manufactured by having a rectangular shape.

Utility Model Registration No. 3073350 (U3073350)

  In the disposable mask disclosed in Patent Document 1, since the mask body has a rectangular shape, when the corner portions located on both sides of the mask body come into contact with the wearer's skin, the wearer's skin is strongly stimulated. There was a risk.

  This invention makes it a subject to provide the disposable mask which does not have a possibility of irritate | stimulating a wearer's skin strongly, even if the both sides of a mask main body contact skin.

  In order to solve the above-described problems, the present invention provides a disposable mask including a mask body having a vertical direction and a width direction and having a mouth-nose covering part, and a pair of ear hooks attached to both side parts of the mask body. Is targeted.

In the disposable mask according to the present invention, both ends of the ear hooking part are fixed to the mask body via the upper fixing part and the lower fixing part which are located on the side parts of the mask body and are separated in the vertical direction. Has a pair of convex portions projecting toward the rear side adjacent to the upper fixing portion and the lower fixing portion, respectively, and a concave portion located between the pair of convex portions and recessed toward the front side. the contour of the protrusion及beauty recess of a curved, the radius of curvature of the contour of the recesses of the mask body, rather smaller than the radius of curvature in the edge of the pair of convex portions, the mask body is a thermoplastic synthetic resin It is formed by laminating a plurality of sheets of formed fiber nonwoven fabric, and on both sides in the width direction of the mouth-nose covering part, it is arranged in a row in the vertical direction at intervals, and a welded part where the sheets are welded is formed. And both sides are spaced along the outer periphery to melt the sheet The mask main body has a non-existing area where the welding part does not exist and is located in a portion adjacent to the upper fixing part and the lower fixing part, and the non-existing areas are arranged in rows in the vertical direction. It is characterized by being surrounded by the weld part which is made, and the weld part arrange | positioned along the outer periphery of both sides .

  The curvature radius of the contour of the concave portion of the mask body is smaller than the curvature radius of the contour of the pair of convex portions. For this reason, a small mask can be provided.

  The welding parts located on both sides in the width direction of the mouth-nose covering part of the mask main body are arranged in a line in the vertical direction, and the central part of the welding parts arranged in a line in the vertical direction is adjacent to the recess. It is possible to prevent the multiple sheets forming the mouth-nose cover from peeling off, improve the rigidity of the portion adjacent to the recess, and prevent both sides from lifting from the face when worn. be able to.

  Both ends of the ear hooking portion of the mask main body are fixed to the mask main body via an upper fixing portion and a lower fixing portion which are located on the side portions of the mask main body and are separated in the vertical direction. The mask main body has a vertical dimension of 2 It has a horizontal center line that is equally divided and can be folded through a seal line located at the center in the width direction. When the mask body is unfolded, the upper end of the mask body is at the center in the width direction. An upward inflection point located between the upper edge of the seal line and the lateral center line, having a shape that curves upward, and the seal line is curved in a side view when the mask body is folded. And a lower inflection point located below the center point of the lower fixing part between the lower end edge and the horizontal center line of the seal line, and the center point of the upper fixing part and the upper end edge of the seal line First imaginary line to connect, upper inflection point and seal line The first intersecting angle formed by intersecting the second imaginary line connecting the end edge is the third imaginary line connecting the center point of the lower fixing portion and the lower end edge of the seal line, the lower inflection point, and the lower end edge of the seal line. The second imaginary line is smaller than the second intersection angle formed by the intersection of the fourth imaginary line and the second imaginary line longer than the fourth imaginary line, and a part of the upper end portion of the mask body is larger than the first imaginary line. Is also located above. In other words, first, the first imaginary line connecting the center point of the upper fixing portion and the upper end edge of the seal line intersects with the second imaginary line connecting the upper inflection point and the upper end edge of the seal line. The first intersection angle is formed by the intersection of the third imaginary line connecting the center point of the lower fixed portion and the lower end edge of the seal line and the fourth imaginary line connecting the lower inflection point and the lower end edge of the seal line. And second, the upper end of the mask body has a curved shape at the center in the width direction, and a part of the upper end is located above the first imaginary line, Thirdly, the second virtual line is longer than the fourth virtual line. By having all these three requirements, the mask fits the face without gaps.

  The mask body is formed by laminating a plurality of non-woven fiber sheets made of thermoplastic synthetic resin, and the sheets are joined to each other only by a seal line and a welded portion located at the periphery of the mask body. For this reason, the mouth-nose covering part is excellent in flexibility and breathability.

  The upper end edge of the mask body has a central portion that curves upward at the central portion in the width direction, and both side portions that have a shape that curves downward on both sides of the central portion. For this reason, even if the mask body is displaced upward during wearing, it is possible to prevent the upper edge of the mask from hitting the eyes by both side portions.

  Since the mask is for infants, it is possible to provide an infant mask that exhibits the above-described functions and effects.

  According to the disposable mask according to the present invention, the both side portions of the mask main body are positioned between the pair of convex portions and the pair of convex portions that are adjacent to the upper fixing portion and the lower fixing portion and project toward the rear side. Since the contour of the pair of convex portions and the concave portion has a curved shape, even if both sides of the mask body come into contact with the wearer's skin, the wearer There is no risk of strongly irritating the skin.

The drawings illustrate specific embodiments of the invention and include selective and preferred embodiments as well as the essential features of the invention.
The side view of the state by which the mask main body in the disposable mask which concerns on this invention was folded. The front view of the state which expand | deployed the mask main body. The mask side view similar to FIG. Sectional drawing which follows the IV (a) -IV (a) line | wire of FIG. (B) The side view of the seal line which showed each circular arc which forms the shape of a seal line with the virtual line. The side view of the mask in a wearing state. The front view of the mask in a wearing state.

  The following embodiments relate to the disposable mask 10 according to the present invention and include not only an indispensable structure of the invention but also a selective and preferable structure. 1 and 3 describe the configuration of the left half panel 202 in a state in which the mask 10 is folded, the right half panel 201 also has the same configuration.

  1-3, the mask 10 shown as an example of the disposable mask 10 of this invention has the up-down direction Y and the width direction X which cross | intersect mutually (orthogonally), a skin opposing surface and the non-facing which opposes it. It includes a skin facing surface, a mask body 20, and a pair of annular ear hooks 40 extending from both side edges 20 c and 20 d of the mask body 20. The mask body 20 has a line Q defined by a virtual point that divides the dimension in the vertical direction Y into two equal parts, and a vertical center line P that divides the dimension in the width direction X into two equal parts. Thus, a seal line 30 extending in the vertical direction is provided (see FIGS. 1 to 3). The line Q in this specification is a curve extending in the width direction X defined by connecting virtual points that bisect the vertical dimension Y of the upper end edge 20a and the lower end edge 20b, which will be described later, of the mask body 20. is there. The line Q may be a straight line. In the present specification, the center of the width direction X may be referred to as the front and the edge in the width direction X may be referred to as the rear in consideration of the wearing state of the mask body 20.

  The mask body 20 has a symmetrical shape with respect to the vertical axis P, and includes a right half panel 201 that covers the right side of the wearer's face and a left half panel 202 that covers the left side. The inner surface of the inner edge located inside the width direction X of the right half panel 201 and the left half panel 202 is joined to each other in a palm shape via the seal line 30, so that the mask 10 is developed. It has a three-dimensional aspect in the state.

  Since the mask 10 is joined with the inner surfaces of the inner edges of the left and right half panels 201 and 202 being in contact with each other, the inner surfaces of the left and right half panels 201 and 202 are always facing each other or / and It is in a contact state. The mask body 20 has a skin facing surface facing the wearer's face and a non-skin facing surface located on the opposite side. In this specification, the skin facing surface is also referred to as the inner surface, and the non-skin facing surface is also referred to as the outer surface.

  The mask body 20 is formed by laminating a plurality of fiber nonwoven fabrics, and has a mouth-nose covering portion 21 (filter region) that is a portion covering the mouth and nose of the wearer, and both side portions 22. The mask body 20 has an upper end edge 20a, a lower end edge 20b, and both side edges 20c and 20d extending in the vertical direction Y between the upper and lower end edges 20a and 20b.

  The upper end edge 20a of the mask body 20 has a wave shape, and a central portion 36a that protrudes upward in the central portion in the width direction X, and both side portions 36b that have a shape that protrudes downward on both sides of the central portion 36a. And have. Since the upper end edge 20a has such a shape, the upper end portion 27 of the mask body 20 has a convex shape at the central portion in the width direction X. Both side edges 20c and 20d of the mask body 20 have a shape that is bifurcated outward in the width direction X, and a lower end edge 20b is substantially V-shaped and extends slightly curved downward from both side edges 20c and 20d. It has a shape.

  The mask 10 is a so-called infant mask mainly intended for a low-age group of 3 to 6 years old, and has a relatively small external dimension. Referring to FIG. The dimension W1 of X is 130 to 190 mm, and the dimension W2 in the vertical direction is 100 to 120 mm. The mask main body 20 has a substantially star shape in the unfolded state, and has a unique design that is different from a conventional adult mask having a simple rectangular shape, elliptical shape, or the like. Therefore, it is possible to give a purchase impression by giving a cute and rounded impression to an infant who is a wear target.

  2 and 4, the mask body 20 is formed of a plurality of fiber nonwoven fabrics laminated in the thickness direction Z (crossing (orthogonal) each in the width direction X and the vertical direction Y), and the mouth An outer layer sheet 23 that forms the non-skin facing surface of the nose cover portion 21, a first intermediate layer sheet (outer intermediate layer) 24, and a second intermediate layer sheet (inner side) laminated in order from the outer layer sheet 23 to the skin facing surface side Intermediate layer) 25 and inner layer sheet 26. The inner layer sheet 26 forms the skin facing surface of the mouth-nose covering part 21. The outer layer sheet 23 and the first intermediate layer sheet 24 have smaller dimensions in the width direction X than the second intermediate layer sheet 25 and the inner layer sheet 26, and both side portions 22 of the mask main body 20 are formed on the second intermediate layer sheet 25 and the inner layer sheet. 26.

  As shown in FIG. 2, the sheets positioned at the periphery of the mask body 20 are joined to each other by welded portions 38 a and 38 b arranged at intervals along the periphery. More specifically, the sheets 23, 24, 25, and 26 located in the mouth-and-nose covering portion 21 are joined to each other by the first welded portion 38 a, and the second intermediate layer sheet 25 and the inner layer sheet 26 located on both side portions 22. Are joined to each other by the second welded portion 38b. The first welded portion 38a and the second welded portion 38b define an outer peripheral seal region 38 that surrounds the mask body 20 in an annular shape. Moreover, since each of the 1st welding part 38a and the 2nd welding part 38b is elliptical shape, a soft image can be given to a wearer and a third party.

  On both side portions 21a of the mouth-nose covering portion 21, third welded portions 39a, 39b arranged at intervals in the vertical direction Y are arranged at intervals along the vertical direction Y, and the sheets 23, 24, 25 are arranged. , 26 are joined together. The third welded portions 39a and 39b can prevent the sheets 23 and 24 forming the mouth / nose covering portion 21 from being separated from the sheets 25 and 26. Further, the central portion of the third welded portions 39 a and 39 b arranged in a line in the vertical direction Y is adjacent to the concave curved portion 53. For this reason, the rigidity of the location which adjoins the concave-curved part 53 can be improved, and it can prevent that the both sides 22 float up from a face at the time of wear.

  The plurality of sheets forming the mask main body 20 are joined to each other by an outer peripheral seal region 38 extending along the outer peripheral edge of the mask main body 20. In addition, the sheets 23 to 26 are joined to each other by longitudinal seal regions 39 extending in the vertical direction Y on both sides in the width direction X of the mouth-nose covering portion 21. The longitudinal seal region 39 has a wave shape (curved shape), and has a curved shape that protrudes backward at the upper side and the lower side and protrudes forward at the center. The curved longitudinal seal region 39 can give a soft image to the wearer and a third party. In addition, you may form the longitudinal seal area | region 39 by the 3rd welding part arrange | positioned linearly at intervals.

  Referring to FIG. 4A, the outer edges 23 a and 24 a of the outer layer sheet 23 and the first intermediate layer sheet 24 are located outside the longitudinal seal region 39 in the width direction X, and the width from the longitudinal seal region 39 is A dry edge portion 70 is formed by a part of the outer layer sheet 23 extending outward in the direction X and a part of the first intermediate sheet 24.

  The outer peripheral seal region 38 has a plurality of welded portions 38 a and 38 b that are spaced apart from each other along the outer peripheral edge of the mask main body 20. The longitudinal seal region 39 includes a plurality of welded portions 39a and 39b that are spaced apart from each other in the vertical direction Y of the side portions 21a of the mouth-nose covering portion 21. The welded portion 39b of the longitudinal seal region 39 has a substantially star shape with a curved tip, and the welded portion 39a has a circular shape with a different size. Since each welding part 38a, 38b, 39a, 39b does not have a pointed part and is formed only from a curved part, each welding part having relatively high rigidity to the wearer. It is possible to give a flexible impression that no stimulation is given even if the skin hits 38a, 38b, 39a, 39b. In addition, each welded portion 38a, 38b, 39a, 39b is located away from the upper and lower end edges 20a, 20b and both side edges 20c, 20d, so that when the sheets 23-26 are welded, the cut ends of the sheets 23-26 are cut off. Since it does not generate | occur | produce, the cut end of the sheets 23-26 does not give irritation | stimulation with respect to skin. Further, since the welded portions 39a and 39b have design properties, the longitudinal seal region 39 can also function as a decorative element.

  Except for the seal line 30, the sheets 23 to 26 are joined to each other only in the outer peripheral seal region 38 and the longitudinal seal region 39, and are not joined in other portions. Therefore, the mask main body 20 is excellent in flexibility and air permeability as compared with the case where the entire opposing surfaces of the sheet formed by laminating a plurality of fiber nonwoven fabrics are bonded to each other by a bonding means such as an adhesive. Moreover, in the part which the outer periphery seal | sticker area | region 38 and the longitudinal seal area | region 39 mutually cross | intersect, each welding part 38a, 38b, 39a, 39b does not mutually overlap. Thereby, it is suppressed that a highly rigid part is locally formed when each welding part overlaps.

The sheets 23 to 26 forming the mask body 20 are, for example, fiber non-woven sheets of thermoplastic synthetic resin having a gas permeability of 10 to 60 g / m ² , and are melt-blown fiber non-woven fabric, spunbond fiber non-woven fabric, SMS fiber non-woven fabric. And various known fiber nonwoven fabrics such as air-through fiber nonwoven fabric. As the first intermediate layer sheet 24, it is preferable to use a fiber nonwoven fabric having a filter function for preventing the passage of fine particles. The second intermediate layer sheet 25 is preferably made of a fiber nonwoven fabric having a relatively strong sheet strength so as to function as a base sheet of the mask body 20. Since the inner layer sheet 26 is in contact with the skin of the wearer, it is preferable to use a fiber nonwoven fabric having a good touch.

In the present embodiment, for example, a spunlace fiber nonwoven fabric having a mass of 35 to 50 g / m ² is used as the outer layer sheet 23, and a meltblown fiber nonwoven fabric having a mass of 20 to 30 g / m ² is used as the first intermediate layer sheet 24. Yes, Yes using mass 35~50g / ^{m 2} spunbond nonwoven fabric as a second interlayer sheet 25, are with spunbonded nonwoven fabric of weight 20 to 30 g / ^{m 2} as an inner layer sheet 26.

  As shown in FIG. 2, the both side portions 22 of the mask body 20 have an upward convex portion (convex portion) 51, a downward convex portion (convex portion) 52, and an upward convex portion 51, which extend backward in a convex shape. And a concave convex portion (concave portion) 53 that is concave forward. The upper and lower convex curved portions 51 and 52 have a gentle curve shape, and the concave curved portion 53 has a smaller radius of curvature than the upper and lower convex curved portions 51 and 52 and has a sharp curved shape. Since the concave curved portion 53 is a portion located between the vertical convex curved portions 51 and 52 that continuously extend in the vertical direction Y, it overlaps with a part thereof. Since the upward convex curved portion 51, the downward convex curved portion 52, and the concave curved portion 53 in both side portions 22 are all curved, the skin is not strongly stimulated even if it touches the skin. In addition, since the wearer's ear can be inserted into the concavely bent portion 53, the free portion 42 of the ear hooking portion 40 is prevented from becoming long, and the mask body 20 is displaced from the wearer's face in the wearing state. Can be suppressed. In addition, the up-and-down convex curved parts 51 and 52 and the concave curved part are not limited to a curved shape, and may be a straight shape.

  In the mask shown in Comparative Example 1 of Table 1, since the curvature radii of the upper and lower convex curved portions 51 and 52 and the concave curved portion 53 are small, the ear hook portion includes the concave curved portion 53 with respect to the size of the wearer's ear. 40. Vertical dimension of both end portions 41a and 41b at 40 (the distance between the lower end of one end portion 41a positioned above and the upper end of the other end portion 41b positioned below among both end portions 41a and 41b) Is too narrow, and both ends 41a and 41b of the ear hook 40 are in strong contact with the ear, and the central portion of the concave portion 53 is separated from the wearer's cheek (the concave portion 53 of the mask). There is also a problem that a gap is generated between the center of the wearer and the cheek of the wearer.

  In the mask shown in Comparative Example 2 of Table 1, the central portion of the concave portion 53 is separated from the wearer's cheek (a gap is generated between the central portion of the concave portion 53 of the mask and the wearer's cheek. ) There was a problem.

  In the mask shown in Comparative Example 3 of Table 1, since the radius of curvature of the concave portion 53 is large, the both end portions 41a and 41b of the ear hook portion 40 including the concave portion 53 with respect to the size of the wearer's ear. The vertical dimension (the distance between the lower end of one end 41a located above and the upper end of the other end 41b located below both ends 41a, 41b) is too wide, and the concave portion 53 There has been a problem that the central portion is separated from the cheek of the wearer (a gap is generated between the central portion of the concave portion 53 of the mask and the cheek of the wearer). In addition, there is a problem that the mask does not follow the line of the wearer's jaw and a gap is generated between the mask body 20 and the face of the wearer.

  On the other hand, in the masks shown in the first to third embodiments, the curvature radii of the upper and lower convex curved portions 51 and 52 and the concave curved portion 53 are appropriate. There was no gap, and the mask body 20 was fitted to the face. In the evaluation, if the mask 10 is fitted to the face and no gap is generated between the mask main body 20 and the face, “good (good)” is given, and the mask 10 is not fitted to the wearer's face. If there was a gap between the face and the mask body 20, it was determined as “× (impossible)”.

  Further, the maximum value of the dimension between both end portions 41a and 41b is preferably 38.5 mm or less from the dimension between both end portions 41a and 41b. When the dimension between both ends 41a and 41b is 38.5 mm, the maximum value of the radius of curvature of the upward convex portion 51 and the downward convex portion 52 is 19.25 mm. If the radius of curvature is 19.25 mm, the upward convex curved portion 51 and the downward convex curved portion 52 come into contact with each other, and the concave curved portion 53 cannot be disposed. When 9 mm which is the maximum value of the concave curved portion 53 is secured, the maximum value of the radius of curvature of the convex and concave portions 51 and 52 is (38.5 mm−9 mm) ÷ 2 = 14.25 mm (approximately 14 mm).

  From the above evaluation, the curvature radius of the upward convex curved portion 51 is preferably 8 to 14 mm, for example. As for the curvature radius of the downward convex curved part 52, 8-14 mm is preferable, for example. Further, the radius of curvature of the concave curved portion 53 is preferably 5 to 9 mm.

  The dimension in the width direction X between the longitudinal seal region 39 and the concave curved portion 53 is the clearance between the center portion of the concave curved portion 53 and the cheek of the wearer while securing the result of Table 1 and the dry edge portion 70. In order not to generate | occur | produce, 10-15 mm is preferable.

  The ear hooking portion 40 is preferably elastically expandable and contractible, and is formed of a known material such as a nonwoven fabric, a woven fabric, a plastic film, a rubber string, or a woven rubber. In particular, when a woven rubber is used for the ear hook 40, even if the ear hook 40 is relatively wide, there is no possibility of causing strong pain due to flexible contact with the wearer's ear 3.

  The ear hooking portion 40 has both end portions 41a and 41b fixed to the mask body and a free portion 42 that extends in an annular shape between the both end portions 41a and 41b. Both end portions 41 a and 41 b of the ear hooking portion 40 are respectively masked via an upper fixing portion 61 located on the upper convex curved portion 51 and a lower fixing portion 62 located on the lower convex curved portion 52 on the outer surface of the both side portions 22. It is fixed to the main body 20. In the upper and lower fixing portions 61 and 62, both ends of the ear hooking portion 40 and the mask main body 20 are joined by heat welding (see FIG. 4A), and a part of the sheets 25 and 26 forming the mask main body 20 is formed. Welded into film. Further, since both end portions 41a and 41b of the ear hooking portion 40 are located on the outer surfaces of the both side portions 22, when the ear hooking portion 40 is pulled backward at the time of wearing, the both end portions 41a and 41b are used to face the both side portions 22 to the face. Can be pressed against.

  Referring to FIG. 3, the upper and lower fixing portions 61 and 62 are, for example, rectangles having curved corners, and have center points 61 a and 62 a that are intersections of diagonal lines of the rectangle. In addition to the illustrated example, the upper and lower fixing portions 61 and 62 may have a known shape such as a triangle, a square, a polygon, a circle, and an ellipse. When the upper and lower fixing portions 61 and 62 are circular, the center of the circle Is the center point of the upper and lower fixed portions 61 and 62. That is, it can be said that the center points 61 a and 62 a of the upper and lower fixing portions 61 and 62 are the center of gravity of the upper and lower fixing portions 61 and 62.

  As shown in FIGS. 1 and 3, the seal line 30 has a curved shape in a side view when the mask main body 20 is folded, and has two inflection points 34 and 35. Here, the inflection points 34 and 34 are portions where the curve and the curve intersect, and do not include a portion where the straight line and the straight line or the line and the curve intersect.

  Referring to FIG. 4B, the seal line 30 includes, for example, three arcs, a first arc C1 positioned above, a second arc C2 positioned below, a first arc C1, and a second arc C2. It is defined by the third arc C3 that is located. The intersection of the first arc C1 and the third arc C3 is the upper inflection point 34, and the intersection of the second arc C2 and the third arc C3 is the lower inflection point 35.

  The radius R1 of the first arc C1 is, for example, 85 to 100 mm, the radius R2 of the second arc C2 is, for example, 50 to 65 mm, and the radius R3 of the third arc C3 is, for example, 95 to 110 mm. . The radius R3 of the third arc C3 is larger than the radius R1 of the first arc C1 and larger than the radius R2 of the second arc C2. Therefore, the central portion of the seal line 30 formed by the third arc C3 has a gentler curve than the upper and lower portions formed by the first and second arcs C1 and C2. Further, the radius R2 of the second arc C2 is smaller than the radius R1 of the first arc C1. Therefore, the upper part formed by the first arc C1 has a gentle curve compared to the lower part formed by the second arc C2.

  Referring to FIG. 3, the upper inflection point 34 is located between the upper end edge 30 a of the seal line 30 and the line Q. The lower inflection point 35 is located below the center point 62 a of the lower fixing portion 62 between the lower end edge 30 b of the seal line 30 and the line Q.

  Further, a first imaginary line (first imaginary line segment) K1 connecting the center point 61a of the upper fixing portion 61 and the upper end edge 30a of the seal line 30, and the upper inflection point 34 and the upper end edge 30a of the seal line 30 are connected. The first intersection angle θ1 formed by intersecting the second imaginary line (second imaginary line segment) K2 is a third imaginary line (second imaginary line) connecting the center point 62a of the lower fixing portion 62 and the lower end edge 30b of the seal line 30. (3 imaginary line segments) K3 and the fourth intersection line (fourth imaginary line segment) K4 connecting the lower inflection point 35 and the lower end edge 30b of the seal line 30 is smaller than the second intersection angle θ2.

  In the mask shown in Comparative Example 1 of Table 2, the central part of the mask body floats with respect to the nasal root, and there is a possibility that a gap is generated between the nasal root and the mask body. In the mask shown in Comparative Example 2 in Table 2, there is a possibility that the central part of the mask body is separated from the lower part of the nose. Further, in the masks shown in Comparative Examples 3 to 4 in Table 2, the curved portion at the center of the mask body does not match the curve of the nasal root, and the upper end of the mask body protrudes above the nasal root. It was. On the other hand, in the masks shown in Examples 1 and 2, no gap was generated on both sides and the lower end of the mask body, and the mask body was fitted to the face. In the evaluation, if the mask fits to the face and there is no gap between the mask body and the face, it is judged as “Good”, and it is not fitted or there is a gap between the face and the mask body. If it occurred, it was set as “× (impossible)”. For this reason, the first intersection angle θ1 is preferably, for example, 80 to 90 degrees.

  In the masks shown in Comparative Examples 1 to 3 in Table 3, the lower portions of both sides of the mask main body located on the side of the jaw are lifted from the face, resulting in a gap. In addition, the lower end portion of the mask main body protrudes from the lower jaw of the wearer, and a gap is generated between the lower end portion of the mask main body and the lower jaw. On the other hand, in the mask shown in Comparative Example 4 in Table 3, the lower end portion of the mask main body was lifted from the tip of the jaw and a gap was generated. In addition, the lower end portion of the mask main body protrudes from the lower jaw of the wearer, and a gap is generated between the lower end portion of the mask main body and the lower jaw. On the other hand, in the masks shown in Examples 1 and 2, there were no gaps on both sides and the lower end of the mask main body, and the mask main body was fitted to the face. The evaluation is “Good” when the mask fits the face and there is no gap between the mask body and the face, and the mask body does not fit the face and the face and the mask body If there was a gap between them, it was judged as “× (impossible)”. For this reason, the second intersection angle θ2 is preferably 95 to 105 degrees, for example.

  Further, in the mask shown in Comparative Example 1 in Table 4, since the length L2 of the fourth imaginary line K4 is short, a gap is generated between the lower end portion of the mask body and the lower jaw. In the mask shown in Comparative Example 2 of Table 4, the dimension L2 of the fourth imaginary line K4 is long, so that the lower end of the mask body protrudes from the lower jaw of the wearer, and between the lower end of the mask body and the lower jaw. A gap has occurred. On the other hand, in the masks shown in Examples 1 and 2, the lower end portion of the mask main body and the lower jaw were fitted, and no gap was generated between the lower end portion of the mask main body and the lower jaw. The evaluation is “Good” when the mask fits the face and there is no gap between the mask body and the face, and the mask body does not fit the face and the face and the mask body If there was a gap between them, it was judged as “× (impossible)”. For this reason, the length L2 of the fourth virtual line K4 is preferably, for example, 17 to 30 mm.

  The length dimension L1 of the second virtual line K2 is, for example, 10 to 45 mm. The length dimension L1 of the second virtual line K2 is larger than the length dimension L2 of the fourth virtual line K4.

  2 and 3, the upper end portion 27 of the mask body 20 has a curved shape at the center in the width direction X, and a portion 27a of the upper end portion 27 is located above the first virtual line K1. positioned.

  For example, a conventional mask for adults has a rectangular shape in which both side edges extend linearly, and the width dimension of the upper edge of the mask body is the same as the width dimension of the lower edge. On the other hand, the width of the lower jaw of the wearer's face is smaller than the width of the cheek. In addition, infants have a lower nasal root than adults, have a rounded lower jaw tip and a lower jaw. For this reason, simply wearing a mask that is a smaller conventional mask for adults on an infant causes the lower end of the mask body to protrude from the lower part of the lower jaw between the face and the lower end of the mask body. The gap was easy to occur. In addition, since the central portion of the mask body cannot cover the back of the nose and the cheek, a gap is likely to occur between the back of the nose and the cheek. Furthermore, in the conventional mask, since the position where the mask is fixed with respect to the face is not clear, a gap is easily generated between the mask body and the face.

  Referring to FIGS. 5 and 6, when the wearer wears the mask 10, for example, the upper end portion 27 of the mask body 20 is brought into contact with the nasal root 4, and then the ear hooking portion 40 is placed on both ears 3. The free part 42 is hung, and finally, the lower end 28 of the mask body 20 is brought into contact with the lower part 2 of the lower jaw so that the lower jaw tip 1 and the lower inflection point 35 face each other, and the mask 10 is placed on the wearer's face. To wear. In the wearing state, the upper and lower end portions 27 and 28 of the mask body 20 are bent backward, that is, toward the face, by pulling the both side portions 22 backward. The upper and lower inflection points 34 and 35 function as the starting points of such bending, and a space S in which the nostril and the mouth 5 are located is defined between the upper and lower inflection points 34 and 35.

  In the mask 10 according to the present invention, as shown in FIG. 3, the first imaginary line K <b> 1 connecting the center point 61 a of the upper fixing portion 61 and the upper edge 30 a of the seal line 30, the upper inflection point 34, and the seal line 30. The first intersection angle θ1 formed by intersecting the second virtual line K2 connecting the upper end edge 30a of the second fixed line 62 and the third virtual line K3 connecting the center point 62a of the lower fixing portion 62 and the lower end edge 30b of the seal line 30; It is smaller than the second intersection angle θ2 formed by intersecting the fourth imaginary line K4 connecting the lower inflection point 35 and the lower end edge 30b of the seal line 30 (first requirement).

  As a result, the upper inflection point 34 is located in front of the center point 61a of the upper fixing portion 61 and is located at a relatively high position on the seal line 30. The upper end 27 fits. Further, since the lower inflection point 35 is below the lower fixing portion 62 and at a relatively low position of the seal line 30, it faces the lower jaw of the infant having a round shape so that the lower end portion 28 extends laterally. Fit.

  Further, the upper end portion 27 of the mask body 20 has a convex shape at the center in the width direction X, and a part 27a of the upper end portion 27 is positioned above the first virtual line K1 (second requirement). . Since the infant's nasal root 4 has a shape that is lower and wider than an adult, when the upper end portion 27 is located below the first imaginary line K1, a part of the nasal root 4 is external. May cause a gap between the mask body 20 and the face. In the present embodiment, a portion 27a of the upper end 27 is positioned above the first imaginary line K1, thereby covering the entire lateral side portion of the nasal root 4 so that a gap is provided between the mask body 20 and the face. The formation can be suppressed. Further, since the upper end portion 27 has a curved shape, there is no possibility of giving a stimulus even if the nasal root 4 is touched.

  Furthermore, the second virtual line K2 is longer than the fourth virtual line K4 (third requirement). Thus, in the worn state, the upper end 27 is fitted to the entire back of the nose, and the lower end 28 projects sharply below the lower jaw to form a gap, or the mask body 20 is vertically long in front view. Do not give a longer impression than the actual face.

  As described above, since the seal line 30 has all these three requirements, the seal line 30 has a space S in front of the mouth 5, the nasal root 4 and the cheek are lower than adults, and the tip 1 of the lower jaw It is possible to provide the mask 10 that fits the face of an infant that is round and has a narrow lower jaw without a gap. In addition, the mask 10 is worn against the face so that the lower end 28 of the mask body 20 is brought into contact with the lower part 2 of the lower jaw so that the tip 1 of the lower jaw and the lower inflection point 35 face each other. The fixing position becomes clear. Wearing the mask 10 at the correct position makes it difficult for a gap to be formed between the mask main body 20 and the face, and prevents the mask main body 20 from shifting from the face during wearing. The upper and lower edges of the mask body are inclined with respect to the width direction and the top and bottom, respectively, and the conventional adult mask that can be folded through a seal line located in the center of the width direction is simply reduced. Such a mask cannot provide the above-described effects.

  At both side edges of the conventional mask, it is difficult to closely contact the wearer's curved cheeks, and a gap is easily generated between the mask and the face. In particular, a portion located between the upper and lower fixing portions pressed against the face by the pulling force of the ear hooking portion is likely to float from the face. On the other hand, in the mask 10 according to the present invention, the non-existing area 54 where the welded portions 38a, 38b, 39a, 39b do not exist is arranged in the portion adjacent to the upper and lower fixing portions 61, 62. , 62 has moderate flexibility, while the welded portions 38b, 39a, 39b are disposed in a manner adjacent to and surrounding the non-existing region 54, so that the welded portion positioned around the non-existing region 54 Since 38b, 39a, and 39b have moderate rigidity, it can prevent that the both sides 22 including the concave-curved part 53 lift from a wearer's face. In particular, the concavely curved portion 53 is curved so as to bend forward, and the central portion of the concavely curved portion 53 is further inward than the innermost ends of the upper and lower fixing portions 61 and 62. Therefore, the mask body 20 can be prevented from being displaced from the face even when the face is moved with respect to the torso, and the welded part 38b can be prevented. , 39a, 39b can prevent both side portions 22 from floating from the face. In addition, the non-existing area 54 also exists in the portion 55 where the concave curved portion 53 and the longitudinal seal area 39 are closest to each other, and the non-existing area 54 continues in the vertical direction, thereby ensuring the above-described operation and effect. be able to.

  Since the upper end edge 20a and the lower end edge 20b in the mask body 20 do not include an acute corner portion and are linear or curved, a soft image can be given to the wearer and a third party. In addition, since the upper and lower convex curved portions 51 and 52 and the concave curved portion 53 in both side portions 22 are all curved, the skin is not strongly stimulated even when touched.

  The upper end edge 20a of the mask body 20 is defined by a central portion 36a extending in the width direction X from above the seal line 30, and a pair of both side portions 36b extending in the width direction X from the end of the central portion 36a. Since the both side portions 36b have a curved shape in which the center in the width direction X is recessed downward, the upper edge 20a of the mask 10 is prevented from hitting the eyes 6 even if the mask body 20 is displaced upward during wearing. be able to. For this reason, in addition to the actions and effects of paragraphs [0061] to [0063], it fits around the nose of an infant with a low nasal root, and a gap is formed between the upper end portion 27 of the mask body 20 and the face. It is possible to prevent the upper edge 20a of the mask 10 from hitting the eyes 6 of the face of an infant with a high cheek.

  Although not shown in the drawings, as another embodiment of the mask 10, decorative elements such as floral patterns, characters, characters, symbols, and symbols may be arranged at one point on the outer surface of the lower portion of the mask body 20 by printing. Good. Such a decorative element can improve design and can also function as an identification element for notifying the wearer of the upper and lower sides of the mask 10. In particular, since the mask 10 has a unique outer shape different from that of the conventional mask, the upper and lower sides cannot be instantaneously discriminated. Therefore, it can be said that such an identification element functions effectively. Further, from the viewpoint of improving the designability, for example, a decorative design imitating a human may be applied according to the shape of the mask body 20. Of course, the decorative element is not limited to the one-point element as long as it has the above-described function, and may be disposed on the entire mouth-nose covering portion 21 or the entire mask body 20.

  Further, as shown in FIG. 2, when the mask body 20 is expanded, if the dimension L4 between the center points 61a of the upper fixing part 61 is larger than the length dimension L3 between the center points 62a of the lower fixing part 62. The mask 10 can be fitted to the face of an infant whose position of the ear 3 is lower than that of an adult while increasing the distance between the upper fixing portions 61 at the upper end portion 27 of the mask body 20 and increasing the space S. The state in which the mask body 20 is expanded means that when the mask body 20 is placed on a flat object, the portion of the mask body 20 except for the vicinity of the seal line 30 is parallel to the upper surface of the flat object. State.

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

DESCRIPTION OF SYMBOLS 10 Disposable mask 20 Mask main body 21 Mouth cover part 22 Both sides part 23 Outer layer sheet | seat (sheet | seat)
24 First intermediate sheet (sheet)
25 Second intermediate sheet (sheet)
26 Inner layer sheet (sheet)
27 Upper end portion 30 Seal line 30a Upper end edge 30b Lower end edge 34 Upper inflection point 35 Lower inflection point 36a Central portion 36b Both side portions 38a First welding portion (welding portion)
38b 2nd welding part (welding part)
39a 3rd welding part (welding part)
39b 3rd welding part (welding part)
40 Ear hook part 51 Upward convex part (convex part)
52 Down convex part (convex part)
53 Concave curve (recess)
61 Upper fixed part 62 Lower fixed part 61a Center point 62a (of the upper fixed part) Center point K1 (Lower fixed part) Center point K1 First virtual line K2 Second virtual line K3 Third virtual line K4 Fourth virtual line L1 Second virtual Length dimension L2 of line K2 Length dimension Q of fourth virtual line K4 (horizontal center line)
X Width direction X
Y Vertical direction θ1 First intersection angle θ2 Second intersection angle

Claims (4)

In a disposable mask including a mask body having a vertical direction and a width direction and having a mouth-nose covering part, and a pair of ear hooks attached to both side parts of the mask body,
Both ends of the ear hooking part are fixed to the mask body via an upper fixing part and a lower fixing part that are located on the side part of the mask body and are separated in the vertical direction,
The two side portions of the mask body has a pair of convex portions protruding toward the rear side adjacent respectively to the upper fixing section and the lower fixing portion, located between said pair of convex portions to the front side And a recess recessed toward
The pair of protrusions and the contour of the recess has a curved, radius of curvature of the contour of the recess, rather smaller than the radius of curvature of the contour of the pair of convex portions,
The mask body is formed by laminating a plurality of fiber nonwoven fabric sheets formed of a thermoplastic synthetic resin,
On both sides in the width direction of the mouth and nose cover portion, arranged in a row in the vertical direction at intervals, and having a welded portion welded with the sheet,
The both side portions are arranged at intervals along an outer peripheral edge, and have the welded portion on which the sheet is welded,
The mask main body has a non-existing area where the welded portion is not located in a portion adjacent to the upper fixing portion and the lower fixing portion,
The non-existing area is surrounded by the welded portions arranged in a line in the vertical direction and the welded portions arranged along the outer peripheral edges of the both side portions. . Mask of claim 1 in which the central portion of the weld portion which is arranged in a row to the vertical direction is adjacent to the recess. Upper edge of the mask body has a central portion which convexly curved upwardly in the central portion in the width direction, according to claim 1 or 2 having both sides portion having a shape convexly curved downward on either side of said central portion mask of. The mask according to any one of claims 1 to 3 , which is for infants.