CN113365521A

CN113365521A - Disposable mask

Info

Publication number: CN113365521A
Application number: CN202080011259.XA
Authority: CN
Inventors: 柴田彰; 古屋芳织
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2019-11-08
Filing date: 2020-09-16
Publication date: 2021-09-07
Also published as: JP2020041254A; WO2021090585A1

Abstract

The present invention provides a disposable mask which can easily distinguish the inner surface and the outer surface while suppressing the influence on the mask performance. The disposable mask includes: a mask body (10) having a vertical direction, a width direction, and a thickness direction, having a 1 st surface and a 2 nd surface which are one surface and the other surface in the thickness direction, and including a nonwoven fabric; and a pair of ear hanging members (20) which are welded to the 2 nd surface at the welding parts (30) at the two sides of the mask main body in the width direction. The color of the ear hanging component is different from the color of the No. 1 surface of the mask main body. The color different from the 1 st surface can be visually recognized from the 1 st surface side through the welded portion.

Description

Disposable mask

Technical Field

The invention relates to a disposable mask.

Background

Disposable masks that are colored partially or entirely are known. For example, patent document 1 discloses a disposable mask. The disposable mask includes a mask body having an upper and lower direction and a width direction and having an inner surface and an outer surface, and a pair of ear loops extending from both side edges of the mask body. The mask body is formed of a base sheet and has a plurality of folds formed by folding the base sheet and arranged in the vertical direction. The base sheet has an inner layer sheet located on the inner surface side, an outer layer sheet located on the outer surface side, and an intermediate sheet interposed between the inner layer sheet and the outer layer sheet. The inner and outer sheets have a total light transmittance higher than that of the intermediate sheet. Only the intermediate sheet of the substrate sheet is colored. The ear hanging part is in the shape of a string and is colored in the same color system as the middle sheet.

In addition, there is known a disposable mask having an outer surface printed with a picture-in-picture although it is not colored. For example, japanese utility model registration No. 3055534 discloses a color mask for fashion and medical use. In the fashionable and medical colored mask, a picture is printed or hand-drawn on the center portion of the mask made of a mask material obtained by coloring gauze, nonwoven fabric, or the like.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-204169

Patent document 2: japanese utility model registration No. 3055534

Disclosure of Invention

Problems to be solved by the invention

In the disposable mask without design as in patent document 1, since the entire inner surface (the surface that comes into contact with the skin when worn) and the outer surface (the surface opposite to the inner surface) are colored in the same color or the same color system, it is difficult to distinguish the inner surface from the outer surface, and there is a possibility that it takes time to wear the mask. Further, the inner surface and the outer surface may be mistaken, and the outer surface may be worn as a surface that is in contact with the skin. In this case, the original function of the mask may not be exhibited. In addition, in the disposable mask having a design as in patent document 2, although it is not difficult to distinguish between the inner surface and the outer surface, there is a possibility that the printing of the design affects the mask performance and increases the cost.

The present invention provides a disposable mask which can easily distinguish the inner surface from the outer surface while suppressing the influence on the mask performance.

Means for solving the problems

The disposable mask of the present invention (1) comprises: a mask body having a vertical direction, a width direction, and a thickness direction, having a 1 st surface as one surface in the thickness direction and a 2 nd surface as the other surface in the thickness direction, and including a nonwoven fabric; and a pair of ear members welded to the 2 nd surface at welding portions at both sides of the mask body in the width direction, wherein the ear members are different in color from the 1 st surface of the mask body, and the ear members are visually recognizable from the 1 st surface side through the welding portions in a color different from the color of the 1 st surface.

In this disposable mask, the nonwoven fabric of the mask body melts into a film shape and becomes substantially transparent when welded to the ear hanging members at the welded portions. Therefore, the user can visually recognize the color of the ear member welded to the 2 nd surface or the mixed color (hereinafter, also simply referred to as "mixed color") in which the color of the ear member is mixed with the color of the 1 st surface and/or the 2 nd surface from the 1 st surface side through the substantially transparent welded portion. However, the color or mixture of colors of the ear members is different from the color of the 1 st side. Therefore, when the user views the disposable mask from the 1 st surface side, the color different from the 1 st surface, that is, the color or the mixed color of the ear hanging members grasped by seeing through the welded portion can be easily confirmed at the positions of the welded portions at both end portions in the width direction. Therefore, when the user views the 1 st surface of the disposable mask, the color of the 1 st surface is different from the color perceived by the perspective weld, and therefore the user can easily direct his or her sight line toward the weld on the 1 st surface. This makes it easy for the user to recognize that the welded portion on the 1 st surface side is not the welded portion on the 2 nd surface side to which the ear member is directly welded, and thus can recognize that this surface is the 1 st surface. On the contrary, when the user views the 2 nd face of the disposable mask, the tab member is directly welded to the 2 nd face, so that the user can easily grasp that the face is the 2 nd face. That is, the user can easily distinguish the 2 nd surface from the 1 st surface.

Here, the user previously recognizes which of the 1 st and 2 nd surfaces is the inner surface and which is the outer surface, using a figure of the mask pack or the like. Alternatively, even if the user does not know which of the 1 st and 2 nd surfaces is the inner surface and which is the outer surface at first, the user can grasp which is the inner surface and which is the outer surface by using the disposable mask once. Thus, the user can easily distinguish the 1 st surface from the 2 nd surface, and can thus distinguish the inner surface from the outer surface.

Further, since it is not necessary to provide patterns on the 1 st surface and the 2 nd surface in order to distinguish the inner surface from the outer surface, it is possible to suppress an influence on the mask performance, an increase in cost, and the like.

Further, the time taken to wear the disposable mask is suppressed, and the disposable mask can be worn accurately and the original function of the disposable mask can be exerted accurately.

According to the disposable mask of the present invention as set forth in the above (1), (2) the color of the ear hanging member may be the same color as the color of the 2 nd surface of the mask body.

In the disposable mask, the color of the ear hanging member is the same as the color of the 2 nd surface welded with the ear hanging member. Therefore, when the user observes the 1 st surface of the disposable mask, the color of the 1 st surface is different from the color perceived by the perspective weld, that is, the color of the 1 st surface is different from the color or mixture of the ear hanging members, and the user can immediately perceive that the surface is not the 2 nd surface to which the ear hanging members are directly welded. On the other hand, when the user views the 2 nd surface of the disposable mask, the color of the 2 nd surface and the color of the welded portion (the color of the ear hanging member itself viewed from the 2 nd surface side) are the same color, and therefore, the user can easily recognize that the surface is the 2 nd surface. That is, the 2 nd surface and the 1 st surface can be easily distinguished. In this case, the same color family color includes the same color.

The disposable mask according to the above (1) or (2), wherein (3) the 1 st surface is an inner surface of the mask body, and the 2 nd surface is an outer surface of the mask body.

In this disposable mask, the ear hanging members are joined to the outer surface side so as to press the mask body from the 2 nd surface, i.e., the outer surface side toward the skin when worn. Thus, the disposable mask can be appropriately attached to the face when worn by the user, and the original function can be accurately exhibited. In addition, when the user views the inner surface, which is the 1 st surface of the disposable mask, the color of the inner surface is different from the color perceived through the fused portion, and thus the user can immediately perceive that the surface is the inner surface. Conversely, when the user views the outer surface, which is the 2 nd surface of the disposable mask, the tab member is directly welded to the surface, and thus the user can immediately recognize that the surface is the outer surface. That is, the inner surface and the outer surface can be easily distinguished.

The disposable mask of the present invention may be the disposable mask of any one of (1) to (3), wherein (4) the color of the ear hanging member and the color of the 1 st surface of the mask body have a hue difference of 5 or more, a brightness difference of 1 or more, or a chromaticity difference of 1 or more in the munsell color system.

In the disposable mask, the color of the ear hanging member and the color of the 1 st surface of the mask body have a hue difference of 5 or more, a luminance difference of 1 or more, or a chromaticity difference of 1 or more in a Munsell color system (100 hue). Therefore, the user can more easily visually recognize the color or the mixed color of the ear hanging member from the 1 st surface side through the welded portion. That is, the 2 nd surface to which the ear member is welded and the 1 st surface to which the color of the ear member can be visually recognized through the welded portion can be more easily distinguished. Thereby, the inner surface and the outer surface can be easily distinguished according to the color.

The disposable mask of the present invention according to any one of the above (1) to (4), wherein (5) the ear hanging member contains a woven rubber, and at least one of a warp and a weft of the woven rubber has a color different from that of the 1 st surface of the mask body.

In the disposable mask, the user can easily distinguish the 2 nd surface of the ear member on the side where the textile rubber is welded from the 1 st surface on which the color of the textile rubber can be visually recognized through the welded portion. In addition, in the textile rubber, even if tension is applied in the longitudinal direction, the dimension in the width direction is hardly changed and is not thinned. Therefore, even in a state where tension is applied in the longitudinal direction, the color of the textile rubber as the ear hanging member can be easily grasped. Thereby, the inner surface and the outer surface can be more easily distinguished according to the color.

According to the disposable mask described in the above (5), in the disposable mask of the present invention, the color of the yarn having a large number per unit volume, out of the warp and weft of the woven rubber in the (6) may be different from the color of the 1 st surface of the mask body.

In this disposable mask, since the color of the yarn having a large number of warps and wefts per unit volume is different from the color of the 1 st surface of the mask body, the user can more easily distinguish the 2 nd surface on the side where the textile rubber is welded from the 1 st surface on which the color of the textile rubber can be visually recognized through the welded portion. Thereby, the inner surface and the outer surface can be more easily distinguished according to the color.

The disposable mask of the present invention may be the disposable mask of any one of (1) to (6), (7) the mask body may include, at each of both ends in the width direction, an extension portion extending in a direction outward in the width direction from at least one of the both ends in the vertical direction, the welding portion may include an extension welding portion located at the extension portion, and the ear hanging member may weld at least one end portion at the extension welding portion.

In the disposable mask, the end portion of the mask body in the width direction includes an extension portion extending in a direction outward in the width direction from at least one of both end portions in the vertical direction, and the hanging ear member is welded at least one end portion to the extension weld portion. In this manner, since the extended weld portion is located at the extended portion extending outward in the width direction, the user can easily grasp the extended weld portion, and thus the color or mixed color of the ear hanging member can be easily visually recognized from the 1 st surface side through the extended weld portion. Thus, the user can distinguish the 2 nd surface from the 1 st surface more easily. Thereby, the inner surface and the outer surface can be more easily distinguished according to the color.

According to the disposable mask of the present invention as set forth in the above (7), (8) the extending portions may include, at both ends in the width direction of the mask body, a 1 st extending portion extending from one end in the vertical direction in the outer direction in the width direction and a 2 nd extending portion extending from the other end in the vertical direction in the outer direction in the width direction, respectively, and the narrowed portion recessed in the inner direction in the width direction may be located between the 1 st extending portion and the 2 nd extending portion, the extension weld includes a 1 st extension weld at the 1 st extension and a 2 nd extension weld at the 2 nd extension, the ear member has one end welded to the 1 st extension welded portion and the other end welded to the mask body at the 2 nd extension welded portion.

In the disposable mask, the mask body includes a 1 st extension part and a 2 nd extension part at the end parts in the width direction, both end parts in the vertical direction extending in the outer direction in the width direction, and the suspension loop member has one end part and the other end part welded to the 1 st extension welding part and the 2 nd extension welding part. In this way, since the 1 st extension part and the 2 nd extension part, which are located outside the 1 st extension welded part and the 2 nd extension welded part in the width direction, can be easily grasped, the color or mixed color of the tab member can be easily visually recognized from the 1 st surface side through the 1 st extension welded part and the 2 nd extension welded part. Thus, the user can distinguish the 2 nd surface from the 1 st surface more easily. Thereby, the inner surface and the outer surface can be more easily distinguished according to the color.

The disposable mask of the present invention may be the disposable mask of any one of (1) to (8), wherein (9) the welded portion is formed by melting the mask body and the ear hanging members by ultrasonic waves.

In this disposable mask, the welded portion is formed by melting the mask body and the ear members by ultrasonic waves, and therefore the nonwoven fabric of the mask body can be easily made into a film, and the color or mixed color of the ear members on the 2 nd surface can be easily visually recognized from the 1 st surface side through the welded portion. Thereby, the inner surface and the outer surface can be more easily distinguished according to the color.

The disposable mask of the present invention may be the disposable mask of any one of (1) to (9), (10) the mask body may be a laminate formed by laminating a plurality of nonwoven fabrics, the laminate may have a plurality of body fusion-bonded portions formed by fusing the plurality of nonwoven fabrics to each other, the plurality of body fusion-bonded portions may include a character string fusion-bonded portion having a shape of a character string in which a plurality of characters are arranged so as to be recognizable when viewed from the 2 nd surface, and the character string fusion-bonded portion may be asymmetric with respect to a center line of the character string, the center line being located at a center in a direction of the character string and extending in a direction orthogonal to the direction of the character string.

The disposable mask includes a character string welded portion including a character string which can be recognized when viewed from the 2 nd surface and which is asymmetric with respect to the center line. This makes it possible to easily distinguish the 2 nd surface from the 1 st surface according to the state of the character string at the character string welded portion. Further, since the character string welded portion is a welded portion for welding a plurality of nonwoven fabrics to each other, the character string welded portion can be formed while suppressing an influence on the mask performance, an increase in cost, and the like. Thereby, the inner surface and the outer surface can be more easily distinguished according to the color.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a disposable mask in which the inner surface and the outer surface can be easily distinguished while suppressing the influence on the mask performance can be provided.

Drawings

Fig. 1 is a perspective view showing a configuration example of a disposable mask according to an embodiment.

Fig. 2 is a side view showing an outer surface side of a configuration example of the disposable mask according to the embodiment.

Fig. 3 is a side view showing an inner surface side of a configuration example of the disposable mask according to the embodiment.

Fig. 4 is a partial cross-sectional view of the disposable mask shown in fig. 1.

Fig. 5 is a front view showing a configuration example of a disposable mask according to another embodiment.

Fig. 6 is a rear view showing a configuration example of a disposable mask according to another embodiment.

Detailed Description

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

Fig. 1 to 4 are views showing a configuration example of a disposable mask 1 (hereinafter, also referred to simply as "mask 1") according to an embodiment. Fig. 1 is a perspective view showing a state in which the mask 1 is worn. Fig. 2 is a side view showing the outer surface of the mask 1 in a state where the mask 1 is folded in two. Fig. 3 is a side view showing the inner surface of the mask 1 in a state where the mask 1 is folded in two. Fig. 4 (a) is a partial sectional view taken along line IVa-IVa in fig. 2, and fig. 4 (b) is a partial sectional view taken along line IVb-IVb in fig. 2. The mask 1 includes: a mask body 10 which covers the mouth and nose of a wearer and is formed of a sheet-like member including a nonwoven fabric; and a pair of ear hanging members 20, wherein the ear hanging members 20 are welded to the mask body 10 at welding portions 30, hung on a pair of ears of a wearer, and formed of string-shaped or band-shaped members.

The mask body 10 has a vertical direction L, a width direction W, and a thickness direction T, and has an inner surface IS (1 st surface) as one surface in the thickness direction T and an outer surface OS (2 nd surface) as the other surface in the thickness direction T. Here, the vertical direction L is a direction of a straight line formed by a fold line when the mask body 10 is folded in two so that one of the pair of ear hanging members 20 and the welding portion 30 of the mask body 10 are welded and the other of the pair of ear hanging members 20 and the welding portion 30 of the mask body 10 are welded to overlap each other. However, when the fold forms a curve as in the present embodiment (fig. 2), the vertical direction L is a direction of a straight line CL connecting the top Ca positioned uppermost on the face and the top Cb positioned lowermost on the curve when worn. The width direction W IS a direction perpendicular to the vertical direction L and along the outer surface OS or the inner surface IS. The thickness direction T is a direction perpendicular to the vertical direction L and the width direction W, and is a direction of the thickness of the sheet constituting the mask body 10. The shape of the mask body 10 is not limited to those shown in the drawings as long as it covers the nose and mouth, and examples thereof include a substantially elliptical shape, a substantially inverted triangular shape, a substantially polygonal shape, and a combination thereof.

The pair of ear members 20 are welded to portions of the outer surface OS (No. 2) on both sides in the width direction W of the mask body 10 at the

welding portions

30 and 30. The welded portion 30 is formed by, for example, a method of welding the ear hanging member 20 and the mask body 10 by heat or ultrasonic waves. When the mask body 10 and the ear hanging members 20 are welded to each other at the welded portions 30, the portions of the mask body 10 corresponding to the welded portions 30 are temporarily melted to form film-like film portions 15 (described later), and the film portions 15 are welded to the end portions 22 (described later) of the ear hanging members 20. Thus, the welded portion 30 includes the film portion 15 and the end portion 22, and has a structure in which both the film portion 15 and the end portion 22 are welded via the joint surface CS. In addition, at the joining surface CS, both the film portion 15 and the end portion 22 may be partially mixed with each other. In another embodiment, the inner surface IS the 2 nd surface and the outer surface OS IS the 1 st surface. In this case, the pair of ear members 20 are welded to portions of the inner surface IS (the 2 nd surface) on both sides in the width direction W of the mask body 10 at the

welding portions

30 and 30. The end portion of a member or the like in a certain direction (exemplified by the vertical direction L and the width direction W) is a range of 1/5 size having the entire length in the direction from the end edge of the member or the like in the certain direction. For example, the end in the width direction W of the mask body 10 is a range of 1/5 having the maximum length in the width direction W of the mask body 10 from the end edge in the width direction W of the mask body 10.

At the welded portion 30, since the film portion 15 is substantially transparent, a part or all of light (exemplified: visible light) can be transmitted to the inside. However, depending on the color of the outer surface OS and the color of the inner surface IS, the color of the film portion 15 may be a color including at least one of the color of the outer surface OS and the color of the inner surface IS. Therefore, when the film portion 15 IS viewed from the inner surface IS side or the outer surface OS side, the color of a member or the like (exemplified by the end 22 of the ear hanging member 20) located on the outer surface OS side or the vicinity of the inner surface IS side on the opposite side can be visually recognized. In addition, as a method of forming the welded portion 30 as a welding method, a method of welding by ultrasonic waves is preferable from the viewpoints of easiness of making the film portion 15 of the mask body 10 into a film, easiness of high-speed production, and reliability.

The ear hanging member 20 IS different in color from the inner surface IS (1 st surface) of the mask body 10. Therefore, the color of (the end portion 22 of) the ear member 20 or a mixed color (also simply referred to as "mixed color") obtained by mixing the color of the ear member with the color of the inner surface IS and/or the outer surface OS can be easily visually recognized from the inner surface IS (the 1 st surface) side through (the film portion 15 of the mask body 10) the welded portion 30. Therefore, when observing the inner surface IS of the mask body 10, the user can confirm that the color of the inner surface IS different from the color or the mixture color of (the end portion 22 of) the ear member 20 on the outer surface OS side observed through (the film portion 15 of the mask body 10 of) the welding portion 30 on the inner surface IS side. Therefore, it IS easy to distinguish the inner surface IS from the outer surface OS on which the ear member 20 IS directly mounted. However, the color of the inner surface IS preferably a white color. This makes it possible to make the color of the ear member 20 less susceptible to the color of the inner surface IS of the film portion 15, and to make the eye-catching member easily visible through the welded portion 30.

In the present embodiment, the color of the inner surface IS of the mask body 10 IS different from the color of the outer surface OS. The purpose of this IS to make it easier to distinguish the inner surface IS from the outer surface OS. In the present embodiment, the ear hanging member 20 is similar to or of the same color as the outer surface OS of the mask body 10. Accordingly, the color of the ear member 20 at the welded portion 30 IS emphasized by the color of the outer surface OS, and thus the ear member can be more easily visually recognized through the welded portion 30 without being affected by the color of the inner surface IS of the film portion 15. That IS, the ear member 20 and the outer surface OS can be more easily distinguished from the inner surface IS, and further the inner surface IS can be more easily distinguished from the outer surface OS.

In the present specification, the "different colors" mean that the difference in hue is 5 or more (preferably 8 or more, more preferably 10 or more), the difference in brightness is 1 or more (preferably 2 or more, more preferably 3 or more), or the difference in chroma is 1 or more (preferably 2 or more, more preferably 3 or more) in the munsell color system (100 hue). In the present specification, the phrase "similar" or "being a same-color-system color" means that the hue difference is less than 5, the lightness difference is less than 1, or the chroma difference is less than 1 in the munsell color system (100 hues), and includes the case where the colors are the same. The color of the ear hanging member 20, the color of the inner surface IS of the mask body 10, and the color of the outer surface OS of the mask body 10 are not particularly limited as long as the above conditions are satisfied. The white color is a color having a luminance of 7 or more, preferably 8 or more, and more preferably 9 or more.

Alternatively, the "difference" in color may be such that Δ E is 1 or more, preferably Δ E is 2 or more, more preferably Δ E is 3 or more, and still more preferably Δ E is 5 or more in terms of the color difference Δ E. In this case, the color "similar" or "being a homogenous color" means that the color difference Δ E is less than 1. The white color is a color in which L is 70 or more, preferably 80 or more, and more preferably 90 or more.

Wherein the above-mentioned color difference is measured as follows.

(1) An X-Rite eXact Stander (measuring diameter: 1.5mm) manufactured by X-Rite was prepared.

(2) Measuring 10 or more points on CIE L A B coordinates of the portion of the sample to be measured while changing the position, and calculating the measured pointAverage values of these ([ L ]₁*，a₁*，b₁*])。

(3) The average value ([ L ] a ] b ] coordinate of the portion to be compared of the sample was measured at 10 points or more while changing the position, and the average value thereof was calculated₂*，a₂*，b₂*])。

(4) The color difference Δ E is calculated by the following equation.

[ number 1 ]

In this way, in the mask 1 of the present embodiment, the nonwoven fabric of the mask body 10 becomes substantially transparent (the film portion 15) when melted and formed into a film shape at the welding portion 30 and the ear member 20. Therefore, the user can visually recognize the color or mixed color of the ear member 20 welded to the outer surface OS (the 2 nd surface) from the inner surface IS (the 1 st surface) side through the film portion 15 of the substantially transparent welded portion 30. Here, the color or mixed color of the ear member 20 IS different from the color of the inner surface IS. Therefore, when the mask 1 IS viewed from the inner surface IS side, the user can easily confirm the color or mixed color of the ear hanging members 20, which IS different from the inner surface IS and IS recognized by seeing through the film portions 15 of the welded portions 30, at the positions of the welded portions 30 at both ends in the width direction W. Therefore, when the user observes the inner surface IS of the mask 1, the color of the inner surface IS different from the color perceived by seeing through the film portion 15 of the fusion-spliced portion 30, and therefore the user can easily direct his or her sight line toward the fusion-spliced portion 30 on the inner surface IS side. This makes it possible for the user to easily recognize that the welding portion 30 on the inner surface IS side IS not the welding portion 30 on the outer surface OS side to which the ear member 20 IS directly welded, and therefore the user can easily recognize that the surface IS the inner surface IS. Conversely, when the user views the outer surface OS of the mask 1, the ear member 20 is directly welded to the surface, so that the user can easily grasp that the surface is the outer surface OS. That IS, the outer surface OS and the inner surface IS can be easily distinguished.

Here, the user grasps in advance which one face and the other face of the mask 1 (mask body 10) IS the inner face IS and which IS the outer face OS by using a figure, a photograph, or the like of the package of the mask 1. Alternatively, even if the user does not know which of the one surface and the other surface of the mask 1 IS the inner surface IS and which IS the outer surface OS at first, the user can grasp which IS the inner surface IS and which IS the outer surface OS by using the mask 1 once. This allows the user to easily distinguish one surface from the other surface of the mask 1, and to easily distinguish the outer surface OS from the inner surface IS.

Further, since it IS not necessary to provide a pattern on one surface and the other surface of mask 1 in order to distinguish between outer surface OS and inner surface IS, it IS possible to suppress an influence on mask performance of mask 1, an increase in cost, and the like.

Moreover, the time taken to wear the mask 1 is suppressed, the mask 1 can be worn accurately, and the mask 1 can exhibit the original function accurately.

In the present embodiment, the mask body 10 includes a left half sheet 10a that IS positioned on the left side in the width direction W and covers the left half of the face of the wearer when viewed from the inner surface IS side, and a right half sheet 10a that IS positioned on the right side in the width direction W and covers the right half of the face of the wearer. The left half panel 10a and the right half panel 10a are joined and integrated along the edges by the facing ends. The engaging portion where the ends are engaged with each other forms an engaging portion 10 b. The joint portion 10b is formed by, for example, a method of welding the end portions to each other by heat or ultrasonic waves, a method of joining the end portions to each other by an adhesive, or the like. At this time, the left half sheet 10a and the right half sheet 10a have a substantially curved shape in which the end edges of the facing end portions thereof protrude outward of the respective sheets. Therefore, the two integrated sheets can form a three-dimensional shape (three-dimensional structure) having a concave surface with respect to the face of the wearer when the wearer wears the garment. In another embodiment, the mask body does not have the left half sheet and the right half sheet as described above, but has an integrated substantially planar shape (see patent document 2, for example). In still another embodiment, the fold portion has a substantially planar shape integrally therewith, and has a plurality of fold portions arranged in the vertical direction (for example, patent document 1).

In the present embodiment, the mask body 10 includes an inner sheet 12 facing the face side, i.e., the inner surface IS side when worn, an outer sheet 11 facing the outer side, i.e., the outer surface OS when worn, and a filter sheet 13 located between the inner sheet 12 and the outer sheet 11. The inner sheet 12, the filter sheet 13, and the outer sheet 11 are welded to each other at a plurality of welded portions 16 (body welded portions) arranged so as to trim the outer edge of the mask body 10. The shape of the welded portion 16 is not particularly limited, and examples thereof include a dot shape, a circular shape, an elliptical shape, a polygonal shape, a pattern shape, a combination thereof, and the like. The welded portion 16 is formed by welding the inner sheet 12, the filter sheet 13, and the outer sheet 11 with heat or ultrasonic waves. At this time, at least a part of each sheet is melted and then cooled and solidified, so that the welded portion 16 is formed into a substantially transparent film. Therefore, the shape of the welded portion 16 can be visually recognized from both the inner surface IS side and the outer surface OS side.

In another embodiment, the mask body 10 includes 2 or more filter sheets 13. In still another embodiment, the mask body 10 is formed entirely of 1 or 2 sheets. In the case where the mask body 10 is formed of 2 sheets, for example, one sheet has the functions of an inner side sheet and a filter sheet, and the other sheet has the functions of a filter sheet and an outer side sheet, or one sheet has the functions of an inner side sheet and a filter sheet, and the other sheet has the functions of an outer side sheet. In the case where the mask body 10 is formed of 1 sheet, for example, the sheet has a function of a filter sheet and at least one of an inner sheet and an outer sheet, or the sheet has a function of a filter sheet.

In the present embodiment, the plurality of welded portions 16 (main body welded portions) include a welded portion 17 (character string welded portion), and the welded portion 17 (character string welded portion) has a shape of a character string in which a plurality of characters are arranged so as to be visible when viewed from the outer surface OS (2 nd surface). The shape of the welded portion 17 can be visually recognized from both the inner surface IS side and the outer surface OS side, similarly to the shape of the welded portion 16. Here, the welded portion 17 is asymmetric with respect to a virtual center line of the character string, which is located at the center in the direction of the character string and extends in the direction orthogonal to the direction of the character string. In the example of fig. 2 showing the outer surface OS, the character string of the fusion-spliced portion 17 is "Mask", and the center line is located between "a" and "s" and is orthogonal to the arrangement direction of the characters. Further, the text column "Mask" is not axisymmetric, i.e., asymmetric, with respect to the center line. Therefore, in the example of fig. 3 showing the inner surface IS, the character string of the welded portion 17 IS formed in the opposite direction of "Mask". Thus, by viewing such a text string, the user can easily distinguish the exterior surface OS from the interior surface IS.

In the present embodiment, the inner sheet 12, the filter sheet 13, the outer sheet 11, and the ear member 20 are welded to each other at a welded portion 30. The shape of the weld 30 is not particularly limited, and a plurality of or a single spot, circle, ellipse, polygon, lattice, pattern, a combination thereof, and the like can be given. The welded portion 30 is formed by welding the inner sheet 12, the filter sheet 13, the outer sheet 11, and the ear member 20 by heat or ultrasonic waves. At this time, at least a part of the inner sheet 12, the filter sheet 13, and the outer sheet 11 is cooled and solidified after being melted, thereby forming a film portion 15, and the film portion 15 is formed by making the parts of the inner sheet 12, the filter sheet 13, and the outer sheet 11 in a substantially transparent film shape. When the cooling and solidification are performed, a part or all of the end portions 22 of the ear members 20 can be melted and welded to the outer sheet 11 (including the film portion 15). Thereby, the color or mixed color of the ear member 20 can be visually recognized from the inner surface IS side through the film portion 15.

The pair of ear members 20 includes a left ear member 20 and a right ear member 20 in the width direction W when viewed from the inner surface IS side. One end 22 and the other end 22 of the left side tab member 20 are joined to the upper and lower ends in the vertical direction L of the left end of the left half sheet 10a at the welding portion 30 so as to extend outward from the left end. Similarly, the one end 22 and the other end 22 of the right ear member 20 are joined to the upper and lower ends in the vertical direction L of the right end of the right half sheet 10a at the welded portion 30 so as to extend outward from the right end. In another embodiment, the pair of ear members 20 are welded to the inner surface IS (1 st surface) at the

welding portions

30 and 30 at portions on both sides in the width direction W of the mask body 10.

In the present embodiment, the mask body 10 includes, at both ends in the width direction W of the mask body 10, a 1 st extending portion 10P1 extending outward in the width direction W from one end in the vertical direction L and a 2 nd extending portion 10P2 extending outward in the width direction W from the other end in the vertical direction L. A narrowed portion 10Q recessed inward in the width direction W is located between the 1 st extending portion 10P1 and the 2 nd extending portion 10P 2. The ear member 20 has one end portion welded to the welded portion 30 (1 st extension welded portion) of the 1 st extension portion 10P1 and the other end portion welded to the welded portion 30 (2 nd extension welded portion) of the 2 nd extension portion 10P 2. In addition, the 1 st extension 10P1 and the 2 nd extension 10P2 may be collectively referred to as an extension. Further, the 1 st and 2 nd extended welds may be collectively referred to as an extended weld. In addition, in another embodiment, at least one of 1 st extending portion 10P1 and 2 nd extending portion 10P2 is not provided, and thus narrowing portion 10Q is not provided. That is, at each of both ends in the width direction W of the mask body 10, at least one of one end and the other end in the vertical direction L does not extend outward in the width direction W, and the welding portion 30 is located at the non-extending end.

In the present embodiment, the inner sheet 12 and the outer sheet 11 hold the filter sheet 13 from both sides in the thickness direction, and maintain the shape of the mask body 10. From the viewpoint of the functions of the inner sheet 12 and the outer sheet 11, the air permeability is preferably higher and the rigidity is preferably higher than that of the filter sheet 13. The inner side panel 12 is preferably more comfortable to the skin. The weight per unit area of the inner sheet 12 and the outer sheet 11 is, for example, 10g/m²～100g/m²。

In the present embodiment, when a gas such as air flows through the filter sheet 13, the filter sheet 13 captures and collects substances (hereinafter, also simply referred to as "fine substances") such as viruses, bacteria, dust, pollen, or fine particulate substances (PM2.5) that are to pass through the filter sheet together with the gas. The weight per unit area of the filter sheet 13 is exemplifiedSuch as 10g/m²～200g/m²。

Examples of the material of the inner sheet 12, the outer sheet 11, and the filter sheet 13 include nonwoven fabrics. Examples of the nonwoven fabric include a spunlace nonwoven fabric, a hot air nonwoven fabric, a spunbond nonwoven fabric, an air-laid nonwoven fabric, a meltblown nonwoven fabric, a flash-spun nonwoven fabric, a thermal bond nonwoven fabric, a carded nonwoven fabric, and a nonwoven fabric obtained by combining several of these nonwoven fabrics. The fibers constituting the nonwoven fabric are not particularly limited as long as they can be melted into a film shape by heat or ultrasonic waves. Examples of such fibers include synthetic resin fibers (for example, polyolefins such as polyethylene, polypropylene, polybutylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, and ionomer resin, polyesters such as polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate, and polylactic acid, and polyamides such as nylon). Further, natural fibers (e.g., wool and cotton) and regenerated fibers (e.g., rayon and acetate) may be partially contained. The fibers constituting the nonwoven fabric may be composed of a single component, or may be composed of a composite fiber such as a sheath-core fiber, a side-by-side fiber, or a sea-island fiber. The nonwoven fabric may be a single-layer nonwoven fabric or a laminate of single-layer nonwoven fabrics (for example, SMS nonwoven fabric).

The material of the filter sheet 13 is preferably higher in the ability to trap fine substances than the inner sheet 12 and the outer sheet 11. In the present embodiment, for example, a electret nonwoven fabric can be used as the material of the filter sheet 13. The polarization-standing non-woven fabric can capture and collect micro substances in the gas by using electrostatic force. Such a nonwoven fabric is obtained by subjecting a nonwoven fabric to an electret treatment. The material of the electret nonwoven fabric is preferably a nonpolar polymer, and examples thereof include polypropylene, polyethylene, polystyrene, and a combination thereof.

From the viewpoint of capturing fine substances, the fiber density of the filter sheet 13 is preferably higher than the fiber densities of the inner sheet 12 and the outer sheet 11. As a filter sheet 13The fiber density of (A) is, for example, 0.03g/cm³～0.20g/cm³Preferably 0.05g/cm³～0.10g/cm³. If the fiber density of the filter sheet is too high, the electret treatment may not reach the inside of the filter sheet for the reason that the fibers prevent the electric field from being formed in the filter sheet by the electret treatment. If the fiber density of the filter sheet is too high, the flow of gas is hindered, and the gas is difficult to pass through the filter sheet 13, which may reduce the gas permeability. On the other hand, if the fiber density is too low, the amount of the fiber for capturing the fine substances is too small, and the capturing performance may be deteriorated.

The material of the ear hanging member 20 is not particularly limited as long as it can be hung on the ear of the wearer, but examples thereof include elastic members such as circular rubber having a circular cross section and flat rubber having a rectangular cross section. Examples of the elastic member include a woven rubber or a knitted rubber formed by weaving or knitting a synthetic resin fiber (which may be a fiber having elasticity). In the present embodiment, a textile rubber is used. The textile rubber does not change in width even if stretched. Therefore, in the case of using the textile rubber, even if the ear member 20 is elongated, it is possible to suppress a situation in which the color of the ear member 20 becomes difficult to observe, and therefore, it is preferable. Further, since the ear hanging member 20 is not thin when hung on the ear, the area of the portion of the textile rubber abutting against the ear of the user can be sufficiently secured, and the wearing comfort of the mask 1 can be improved. Therefore, the mask 1 can accurately exhibit the original function and can be worn for a long time.

In the present embodiment, the ear member 20 is formed of a textile rubber. In this case, at least one (in the present embodiment, the weft) of the warp (exemplified by stretchable polyurethane fiber) and the weft (exemplified by polyester fiber) of the woven rubber has a color different from that of the inner surface IS (1 st surface) of the mask body 10. In another embodiment, the color of the yarn having a larger number per unit volume, of the warp and weft of the woven rubber, IS different from the color of the inner surface IS of the mask body. In this case, the color of the other yarn may be the same color or white, for example. This makes it possible to make the entire color of the ear member 20 different from the color of the inner surface IS.

In a preferred aspect of the present embodiment, in the mask 1, the color of the ear member 20 is the same color as the color of the outer surface OS (2 nd surface) to which the ear member 20 is welded. Therefore, when the user observes the inner surface IS (the 1 st surface) of the mask 1, the color of the inner surface IS different from the color perceived by the see-through fusion-bonded part 30, that IS, the color of the inner surface IS and the color or mixed color of the ear hanging member 20 are different from each other, and the user can immediately perceive that the surface IS not the outer surface OS to which the ear hanging member 20 IS directly fused. On the other hand, when the user observes the outer surface OS of the mask 1, the color of the outer surface OS and the color of the fusion-spliced portion 30 (the color of the ear member 20 itself when viewed from the outer surface OS) are the same color, and therefore, the user can easily recognize that the surface is the outer surface OS. That IS, the inner surface IS and the outer surface OS can be immediately distinguished. In addition, the same color family includes the same color.

In a preferred aspect of the present embodiment, in the mask 1, the ear hanging members 20 are coupled to the outer surface OS side so as to press the mask body 10 from the outer surface OS side, which is the 2 nd surface, toward the skin (face) when worn. Therefore, when the user observes the inner surface IS which IS the 1 st surface of the mask 1, the color of the inner surface IS different from the color perceived through the fusion-spliced portion 30, and thus the user can immediately perceive that the surface IS the inner surface IS. On the other hand, when the user observes the outer surface OS which is the 2 nd surface of the mask 1, the ear member 20 is directly welded to the surface, and thus the user can immediately recognize that the surface is the outer surface OS. That IS, the inner surface IS and the outer surface OS can be easily distinguished.

In a preferred aspect of the present embodiment, in the mask 1, the color of the ear hanging member 20 and the color of the inner surface IS (1 st surface) of the mask body 10 are different from each other in hue by 5 or more, in brightness by 1 or more, or in chroma by 1 or more in the munsell color system (100 hue). Therefore, the user can more easily visually recognize the color or the mixed color of the ear member 20 from the inner surface IS side through the weld portion 30. That IS, the outer surface OS (2 nd surface) to which the ear member 20 IS welded and the inner surface IS, through which the color or mixed color of the ear member 20 can be visually recognized through the welded portion 30, can be more easily distinguished. Thereby, the inner surface IS and the outer surface OS can be easily distinguished.

In a preferred aspect of the present embodiment, in the mask 1, since the ear members 20 are made of woven rubber, even if tension is applied in the longitudinal direction, the width thereof is almost constant, and the state in which the color of the ear members 20 becomes difficult to observe can be suppressed. Thus, the user can easily distinguish the outer surface OS (surface 2) which IS the side of the ear member 20 to which the textile rubber IS welded from the inner surface IS (surface 1) which allows the color of the textile rubber to be visually recognized through the welded portion 30. Thereby, the inner surface IS and the outer surface OS can be more easily distinguished according to the color. In addition, since the textile rubber has a width that is almost constant regardless of whether tension is applied, the area of the textile rubber that abuts against the user's ear can be sufficiently ensured. This improves the wearing comfort of the mask 1. Therefore, the mask 1 can accurately exhibit the original function and can be worn for a long time.

In a preferred aspect of the present embodiment, in the mask 1, the textile rubber serving as the ear hanging member 20 IS formed of a yarn having a large number of warp yarns and weft yarns per unit volume, and the color of the yarn IS different from the color of the inner surface IS (1 st surface) of the mask body 10. Therefore, the user can more easily distinguish the outer surface OS (2 nd surface) on the side where the spun rubber IS welded from the inner surface IS on the side where the color of the spun rubber can be visually recognized through the welded portion 30. Thereby, the inner surface IS and the outer surface OS can be distinguished more easily.

In a preferred aspect of the present embodiment, in the mask 1, the end portion in the width direction W of the mask body 10 includes an extension portion 10P extending outward in the width direction W from at least one of both end portions in the vertical direction L, and the ear hanging member 20 is welded at least at one end portion to the welded portion 30 (extension welded portion). As described above, since the user can easily grasp the welded portion 30 by the extending portion 10P in which the welded portion 30 IS located outward in the width direction W, the color of the ear hanging member 20 can be easily visually recognized from the inner surface IS (1 st surface) side through the welded portion 30. Thus, the user can more easily distinguish the inner surface IS from the outer surface OS.

In a preferred aspect of the present embodiment, in the mask 1, the end portions in the width direction W of the mask body 10 include the 1 st extending portion 10P1 and the 2 nd extending portion 10P2, both end portions in the vertical direction L of which extend in the outer direction in the width direction W, and the one end portions and the other end portions of the ear member 20 are welded to the welded portions 30 and 30 (the 1 st extending welded portion and the 2 nd extending welded portion). As described above, since the welded

portions

30 and 30 can be more easily grasped by the 1 st extending portion 10P1 and the 2 nd extending portion 10P2 in which the welded

portions

30 and 30 are located outward in the width direction W, the color or mixed color of the ear hanging member 20 can be easily visually recognized from the inner surface IS (1 st surface) side through the welded

portions

30 and 30. Thus, the user can more easily distinguish the inner surface IS and the outer surface OS according to the color.

In a preferred aspect of the present embodiment, in the mask 1, the welded portion 30 is formed by melting the mask body 10 and the ear hanging members 20 by ultrasonic waves. Therefore, the nonwoven fabric of the mask body 10 can be easily made into a film, and thus the color of the ear member 20 located on the outer surface OS (2 nd surface) can be easily visually recognized from the inner surface IS (1 st surface) side through the welded portion 30. Thereby, the inner surface IS and the outer surface OS can be distinguished more easily.

In a preferred aspect of the present embodiment, the Mask 1 includes a welded portion 17 (character string welded portion), and the welded portion 17 (character string welded portion) includes a character string (exemplified by Mask) which is visible when viewed from the outer surface OS (2 nd surface) and is asymmetric with respect to a center line in the arrangement direction of the character string. This makes it possible to easily distinguish the outer surface OS (surface 2) from the inner surface IS (surface 1) depending on the state of the character string of the welded portion 17. Further, since the welded portion 17 is a welded portion for welding a plurality of nonwoven fabrics to each other, the welded portion 17 can be formed while suppressing an influence on the mask performance, an increase in cost, and the like. Thereby, the inner surface IS and the outer surface can be more easily distinguished according to the color.

Next, another embodiment will be described. Fig. 5 and 6 are views showing a configuration example of a disposable mask 1a (hereinafter, also referred to simply as "mask 1 a") according to an embodiment. Fig. 5 is a front view of the mask 1a, and fig. 6 is a rear view of the mask 1 a. Hereinafter, differences between mask 1a shown in fig. 5 to 6 and mask 1 shown in fig. 1 to 4 will be mainly described.

In the mask 1a of the present embodiment, the mask body 10 has a substantially rectangular shape which is short in the vertical direction L and long in the width direction W when viewed from the front. However, the shape of the mask body 10 is not limited to this example as long as it can cover the nose and mouth, and examples thereof include a substantially elliptical shape, a substantially inverted triangular shape, a substantially polygonal shape, and a combination of these shapes. The mask body 10 includes a plurality of folds 40, and the folds 40 extend in the width direction W, are arranged in the vertical direction L, and are folded in the thickness direction T (a fold-type structure). The plurality of folds 40 are each deformable in the up-down direction L into a corrugated shape so as to form a predetermined mouth space between the inner surface IS of the mask body 10 and the wearer. In the present embodiment, the mask body 10 includes a nose fitting member 42 at a portion corresponding to the nose when worn.

The pair of ear members 20 are welded to portions of the outer surface OS (2 nd surface) at both sides in the width direction W and both ends in the vertical direction L of the mask body 10 at the

welding portions

30 and 30. In another embodiment, the pair of ear members 20 are welded to portions of the inner surface IS (the 2 nd surface) at the

welding portions

30 and 30, which are located on both sides in the width direction W of the mask body 10 and are both ends in the vertical direction L.

The other structure of the mask 1a is as described in the mask 1 of fig. 1 to 3. The present embodiment (mask 1a of fig. 5 to 6) can also exhibit the same operational effects as those of the above-described embodiment (mask 1 of fig. 1 to 3).

In addition, in the present specification, values of the sheet weight per unit area, thickness and fiber density were measured by the following methods.

Weight per unit area of the sheet: 10 samples of 5cm × 5cm were cut out from an arbitrary portion of the piece to be measured. Next, the mass of the sample was measured. Subsequently, the measured mass was divided by the area of the sample to calculate the weight per unit area of the sample. The weight per unit area of the sheet was determined as a value obtained by averaging the weights per unit area of 10 samples.

Thickness of the sheet: the sample was made of FS-60 DS (manufactured by Daorhiki Seisaku Seisakusho Co., Ltd.) and had a thickness of 15cm²The thickness of the probe is 3g/cm²Under the measurement load of (2), the thickness of the sheet was measured. The thickness of the sheet to be measured was measured at arbitrary 3 points, and the average value of the thicknesses at 3 points was taken as the thickness of the sheet.

Fiber density of the sheet: the fiber density of the sheet is calculated by dividing the weight per unit area of the sheet determined by the above method by the thickness of the sheet determined by the above method.

The disposable mask of the present invention is not limited to the above-described embodiments, and the techniques of the embodiments and the techniques known in the art may be used in combination or substitution without departing from the object and spirit of the present invention.

Description of the reference numerals

1. (disposable) masks; 10. a mask body; 20. a suspension loop member; 30. and (4) welding the parts.

Claims

1. A disposable mask, comprising: a mask body having a vertical direction, a width direction, and a thickness direction, having a 1 st surface as one surface in the thickness direction and a 2 nd surface as the other surface in the thickness direction, and including a nonwoven fabric; and a pair of ear hanging members welded to the 2 nd face at welding portions at both side portions in the width direction of the mask body,

the color of the ear hanging component is different from the color of the 1 st surface of the mask main body,

a color different from the color of the 1 st surface can be visually recognized from the 1 st surface side through the welded portion.

2. The disposable mask of claim 1 wherein,

the color of the ear hanging component is the same color as the color of the 2 nd surface of the mask body.

3. The disposable mask of claim 1 or 2 wherein,

the 1 st surface is an inner surface of the mask body, and the 2 nd surface is an outer surface of the mask body.

4. The disposable mask according to any one of claims 1 to 3, wherein,

the color of the ear hanging component and the color of the 1 st surface of the mask body have a hue difference of more than 5, a brightness difference of more than 1 or a chromaticity difference of more than 1 in a Munsell color system.

5. The disposable mask according to any one of claims 1 to 4, wherein,

the ear hanging component contains textile rubber,

at least one of the warp and weft of the woven rubber has a color different from that of the 1 st surface of the mask body.

6. The disposable mask of claim 5 wherein,

the color of the yarn having a large number per unit volume, of the warp and weft of the woven rubber, is different from the color of the 1 st surface of the mask body.

7. The disposable mask according to any one of claims 1 to 6, wherein,

the mask body includes, at both ends in the width direction, extensions extending in a direction outward in the width direction from at least one of the both ends in the vertical direction,

the weld comprises an extended weld at the extension,

the hanger member has at least one end portion welded at the extended weld.

8. The disposable mask of claim 7 wherein,

the extending portions include, at both ends in the width direction of the mask body, a 1 st extending portion in which one end in the vertical direction extends outward in the width direction and a 2 nd extending portion in which the other end in the vertical direction extends outward in the width direction,

a narrowed portion that is recessed toward the inner side in the width direction is located between the 1 st extending portion and the 2 nd extending portion,

the extension weld includes a 1 st extension weld at the 1 st extension and a 2 nd extension weld at the 2 nd extension,

the ear member has one end welded to the 1 st extension welded portion and the other end welded to the mask body at the 2 nd extension welded portion.

9. The disposable mask according to any one of claims 1 to 8, wherein,

the welded portion is formed by melting the mask body and the ear hanging members by ultrasonic waves.

10. The disposable mask according to any one of claims 1 to 9, wherein,

the mask body is a laminated body formed by laminating a plurality of non-woven fabrics,

the laminate has a plurality of main body fusion parts for fusing the plurality of nonwoven fabrics to each other,

the plurality of main body welded parts include a character string welded part having a shape of a character string in which a plurality of characters are arranged so as to be recognizable when viewed from the 2 nd surface,

the character string welded portion is asymmetric with respect to a center line of the character string, the center line being located at a center in a direction of the character string and extending in a direction orthogonal to the direction of the character string.