WO2020240906A1

WO2020240906A1 - Steam generator

Info

Publication number: WO2020240906A1
Application number: PCT/JP2020/000260
Authority: WO
Inventors: 滋美土屋; 圭二吉井; 岡本　拓也
Original assignee: 花王株式会社
Priority date: 2019-05-24
Filing date: 2020-01-08
Publication date: 2020-12-03
Also published as: KR20210099069A; JP7309562B2; CN113874060A; CN113874060B; JP2020192310A; KR102623141B1

Abstract

The present invention provides a steam generator comprising a bottomed cylindrical mask body having an opening in a face-contact-side end part thereof, and a steam generating body capable of generating steam in an internal space of the mask body, the mask body having a peripheral surface which tapers from the face-contact-side end part toward a closed-side end part positioned on the opposite side from the face-contact-side end part, the peripheral surface of the mask body having a recessed part which is concave toward the internal space, and a pair of recessed parts being formed in opposing positions in the peripheral surface of the mask body.

Description

Steam generator

The present invention relates to a steam generator.

Conventionally, a steam generator capable of supplying hot steam to the throat and nose is known (Japanese Patent Laid-Open No. 2011-188947). The steam generator of Japanese Patent Application Laid-Open No. 2011-188947 includes a first panel and a second panel that are joined so as to form a bag having an opening in a part thereof, and a flat plate-shaped steam generator contained in each panel. By expanding the opening between the first panel and the second panel, it is configured to form a cup shape capable of covering the user's mouth and nose. According to the steam generator of JP2011-188947, it is possible to enhance the function of the airway mucosa by supplying warm steam to the throat and nose, and to obtain a preventive effect on colds, influenza and the like.

The present invention is a steam generator including a bottomed tubular mask body having an opening at the end on the face contact side and a steam generator capable of generating steam in the internal space of the mask body. Has a peripheral surface that tapers from the face-contact side end portion toward the obstruction-side end portion located on the opposite side of the face-contact side end portion, and the peripheral surface of the mask body is the internal space. It has a recessed portion that becomes concave toward the surface, and the recessed portion relates to a steam generator formed in pairs at positions facing each other on the peripheral surface of the mask body.

It is a figure which shows the steam generator which concerns on one Embodiment of this invention. It is a development view which shows the development state of the mask main body in the steam generator which concerns on this embodiment. It is sectional drawing which follows the AA'line of FIG. It is a figure which shows the folded state of the steam generator which concerns on this embodiment. It is a figure which shows the use state of the steam generator which concerns on this embodiment. It is sectional drawing in the state which the steam generator which concerns on this embodiment is deformed into a cup shape. It is a schematic diagram which shows the apparatus which measures the amount of water vapor generation. It is a figure which shows the state which the cup body in the state which opened the end part on the face contact side was seen from the direction which faces the opening. It is a figure which shows the mask body which concerns on the modification. It is a figure which shows the mask main body which concerns on other modification. It is a figure which shows the mask main body which concerns on still another modification. It is a figure which shows the mask main body which concerns on still another modification.

Detailed description of the invention

The steam generator of Japanese Patent Application Laid-Open No. 2011-188947 has room for improvement in terms of fit to the user's face and grip when held by hand during use.

The present invention relates to a steam generator having excellent fit to the user's face and grip when held by hand during use.

Specifically, the present invention is a steam generator including a bottomed tubular mask body having an opening at the end on the face contact side and a steam generator capable of generating steam in the internal space of the mask body. The mask body has a peripheral surface that tapers from the face-contact side end portion toward the obstruction-side end portion located on the opposite side of the face-contact side end portion, and the peripheral surface of the mask body. Has a recessed portion that is concave toward the internal space, and the recessed portion relates to a pair of steam generators formed at opposite positions on the peripheral surface of the mask body.

The steam generator according to the present invention has excellent fit to the user's face and grip when held by hand during use.

[Form for carrying out the invention]
Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. It should be noted that the following embodiments do not limit the invention according to each claim, and not all combinations of features described in the embodiments are essential for the means for solving the invention. ..

[Overall configuration of steam generator]
As shown in FIG. 1, the steam generator 1 according to the present embodiment can generate steam in a cup-shaped mask body 2 that can cover the user's mouth and nose and an internal space 4 of the mask body 2. It is provided with a steam generator 3.

In the present specification, the "cup shape" means a cylindrical shape in which one end is open and the other end is closed, that is, a bottomed cylinder, and the shape of the body is , Not limited to a cylindrical shape, but also includes, for example, a square cylinder shape. Further, in the present specification, the open side end portion of the mask body 2 formed in a cup shape is referred to as "face contact side end portion 5", and the closed end side end located on the opposite side of the face contact side end portion 5. The portion is referred to as "closed end portion 6". Further, in the present specification, a state in which the mask body 2 arranged so that the “face contact side end portion 5” and the “closed side end portion 6” are aligned in the left-right direction is viewed from a plane direction (that is, the state of FIG. 4). The upper edge portion in the above is referred to as "upper side edge portion 7", and the lower edge portion in the same state is referred to as "lower side edge portion 8". Here, the "upper side edge 7" is an edge located on the nose side when the user's mouth and nose are covered with the mask body 2 held in a cup shape, and the "lower side edge 7" is The portion 8 ”is an edge portion located on the oral side (jaw side) in the same state. However, since the mask body 2 according to the present embodiment is vertically symmetrical with respect to the horizontal center line 13a described later, it should be mounted upside down, that is, the lower side edge portion 8 is located on the nose side and the upper side. It is also possible to attach the side edge portion 7 to the user so that it is located on the mouth side (jaw side).

[Mask body configuration]
As shown in FIG. 1, the mask main body 2 includes a first panel portion 10A forming a half peripheral surface of the mask main body 2 and a second panel portion 10B forming the remaining half peripheral surface. FIG. 2 is a plan view in a state where the mask main body 2 is expanded so that the inner surface of the cup shape faces upward, and FIG. 3 is a cross-sectional view taken along the line AA'in FIG. .. As shown in FIG. 2, the first panel portion 10A and the second panel portion 10B are integrally continuous at the closed side end portion 6, and are bordered by the closed side end portions 6 of both

panel portions

10A and 10B. It has a symmetrical shape. In other words, the mask main body 2 is composed of a sheet-like member in which the first panel portion 10A and the second panel portion 10B having the same shape and the same size are arranged symmetrically.

As shown in FIG. 2, the first panel portion 10A and the second panel portion 10B each have a shape that tapers from the face-contact side end portion 5 to the obstruction side end portion 6, and are formed in a substantially fan shape in the present embodiment. Has been done. Specifically, in the first panel portion 10A and the second panel portion 10B, the face-contact side end portion 5 is formed in an arc shape, and the closed side end portion 6 is formed in a substantially linear shape. Further, the first panel portion 10A and the second panel portion 10B are closed from the upper side edge portion 7 extending from the upper end of the face contact side end portion 5 to the upper end of the closing side end portion 6 and from the lower end of the face contact side end portion 5. The lower side edge portion 8 reaching the lower end of the side end portion 6 is inclined in a direction in which it intersects with each other on the closing side end portion 6 side. Further, the first panel portion 10A and the second panel portion 10B are centers connecting the center of the face-contact side end portion 5 of the first panel portion 10A and the center of the face-contact side end portion 5 of the second panel portion 10B, respectively. It has a vertically symmetrical shape with a line (hereinafter referred to as "horizontal center line 13a") as a boundary.

The face-contact side end portion 5 has a radius of curvature of 75 mm or more and 200 mm or less, preferably has a radius of curvature of 80 mm or more and 120 mm or less, and more preferably 85 mm or more and 100 mm or less. Further, the face-contact side end portion 5 has an arc length of 160 mm or more and 220 mm or less, preferably 170 mm or more and 210 mm or less, and preferably 180 mm or more and 200 mm or less. More preferred.

As shown in FIG. 2, recessed portions 12 are formed in the upper side edge portion 7 and the lower side edge portion 8 of the first panel portion 10A and the second panel portion 10B, respectively, as shown in FIG. The recessed portion 12 is formed in a concave shape that draws a gentle arc toward the horizontal center line 13a (inside of the

panel portions

10A and 10B).

In the present embodiment, the recessed portion 12 refers to an arc portion facing the inside of each of the

panel portions

10A and 10B on the upper side edge portion 7 and the lower side edge portion 8. Specifically, as shown in FIG. 2, the upper side edge portion 7 and the lower side edge portion 8 extend from the face contact side end portion 5 to the obstruction side end portion 6, respectively, and the

panel portions

10A and 10B, respectively. Arc-shaped face-contacting

arc portions

7a and 8a toward the outside, arc-

shaped recesses

12 and 12 toward the inside of the

panel portions

10A and 10B, and arc-shaped arc-

shaped recesses

12 and 12 toward the outside of the

panel portions

10A and 10B. The closed

arc portions

7b and 8b have a continuous wavy shape. That is, the recessed portion 12 according to the present embodiment is sandwiched between the face-contacting

arc portions

7a and 8a and the

closing arc portions

7b and 8b. The concave portion 12 of the upper side edge portion 7 refers to a region from the apex of the face-contacting side arc portion 7a (upper inflection point UF) to the apex of the closed side arc portion 7b (lower inflection point LF). The recessed portion 12 of the lower side edge portion 8 refers to a region from the apex of the face-contacting arc portion 8a (upper inflection point UF) to the apex of the closed side arc portion 8b (lower inflection point LF).

In the present embodiment, the recessed portion 12 efficiently propagates the pressing force of the finger when deforming the mask body 2 into a cup shape to the face-contacting side end portion 5 side, and the opening is smoothly expanded. It is preferable that the shape is concave toward the end 5 side on the face contact side. In particular, as shown in FIG. 2, each panel has an intersection of the recessed portion 12 of the upper side edge portion 7 in the recessed direction 13b and the recessed portion 12 of the lower side edge portion 8 in the recessed direction 13c. It is preferable that the

portions

10A and 10B are located on the face-contact side end portion 5 side rather than the centroid position. Further, it is more preferable that the intersection is located on the horizontal center line 13a.

The recessed portion 12 has a radius of curvature of 10 mm or more and 50 mm or less, preferably 20 mm or more and 40 mm or less, and more preferably 25 mm or more and 35 mm or less of the radius of curvature at the crown. Further, the recessed portion 12 has an arc length of 20 mm or more and 60 mm or less, preferably has an arc length of 30 mm or more and 50 mm or less, and more preferably has an arc length of 35 mm or more and 45 mm or less.

In the present embodiment, the mask main body 2 has a multi-layer structure as shown in FIG. That is, the mask main body 2 includes an inner surface sheet 14 that forms an inner surface when it becomes a cup shape, and an outer surface sheet 16 that forms an outer surface when it becomes a cup shape. The inner surface sheet 14 and the outer surface sheet 16 are formed to have the same shape and the same size, and the steam generator 3 is arranged between the inner surface sheet 14 and the outer surface sheet 16.

The steam generator 3 is arranged symmetrically on both the first panel portion 10A and the second panel portion 10B with the closed end portion 6 as a boundary. Specifically, when the user's mouth and nose are covered by the cup-shaped mask body 2, a space surrounded by the user's mouth, nose and cheek and the steam generator 3 is created (see FIG. 6). ), From the viewpoint of increasing the temperature and absolute humidity in the steam generator 1 without suppressing the generation of steam, and from the viewpoint of suppressing the steam generator 3 from coming into contact with the skin, as shown in FIGS. 2 and 3. It is preferable that the mask body 2 is symmetrically arranged in the vicinity of the closed end portion 6.

More specifically, each steam generator 3 has a distance D ₁ (see FIG. 3) between the end of each steam generator 3 on the closed side end 6 side and the closed end 6 of 15 mm or less. It is preferably arranged so as to be 12 mm or less, more preferably it is arranged so that the shortest distance is 5 mm or more, and it is preferably arranged so as to be 7 mm or more. More preferred. Further, each steam generator 3 has a distance D ₂ (see FIG. 3) between the end portion 5 on the face contact side end 5 side of each steam generator 3 and the face contact side end portion 5 of 15 mm or more. It is preferably arranged so as to be 20 mm or more, more preferably arranged so that the shortest distance is 30 mm or less, and preferably arranged so as to be 25 mm or less. More preferred. The distance D ₁ and the distance D ₂ refer to the distances on the horizontal center line 13a.

An adhesive (not shown) is applied to the outer surface sheet 16, and the steam generator 3 and the inner surface sheet 14 are adhered to the outer surface sheet 16 via the adhesive. As the adhesive, it is preferable to use a hot melt type adhesive, but the adhesive is not limited to this, and various known fixing means can be used. In addition, instead of or in addition to the configuration in which the adhesive is applied to the outer surface sheet 16, it is also possible to adopt a configuration in which the adhesive is applied to the inner surface sheet 14.

As the material of the inner surface sheet 14 and the outer surface sheet 16, those conventionally used in the technical field of sanitary masks can be used, and the types are not particularly limited as long as they have a certain level of air permeability. For example, a fiber sheet such as a non-woven fabric or gauze can be used, and it is preferable to use a non-woven fabric from the viewpoint of ease of processing and economy, and from the viewpoint of obtaining good shape retention.

As the fiber material of the non-woven fabric, for example, one or two kinds selected from polyester such as PET (polyethylene terephthalate); polyolefin such as PE (polyethylene), PP (polypropylene), ethylene-propylene copolymer; rayon; cotton and the like. Those composed of the above fibers are preferable. Further, as the non-woven fabric, the fibers of one or more of the above-mentioned materials are used, and the air-through method, the spunbond method, the needle punch method, the melt blown method, the card method, the heat fusion method, the water flow confounding method, and the solvent bonding method are used. Those manufactured by a method or the like can be used, and may have a single-layer structure or a multi-layer structure. When both the inner surface sheet 14 and the outer surface sheet 16 are made of a single-layer or multi-layered non-woven fabric, the steam generator 3 is sandwiched between two or more non-woven fabrics.

It is preferable that the inner surface sheet 14 is breathable from the viewpoint of efficiently acting the action of the emitted steam on the body of the user of the steam generator 1. On the other hand, the outer surface sheet 16 may be made of any material depending on the design of the product, may be a breathable sheet or a non-breathable sheet, may have elasticity, and is non-stretchable. You may. Examples of the elastic sheet include a sheet containing elastic fibers as constituent fibers, a sheet containing elastic filaments, a sheet exhibiting elasticity due to a structure such as rubber knitting, and the like.

Further, the inner surface sheet 14 and the outer surface sheet 16 may have a basis weight capable of exhibiting rigidity enough to retain the shape when held by the user. For the inner surface sheet 14, it is preferable to select a constituent material for the purpose of improving skin contact, and for the outer surface sheet 16, it is preferable to select a constituent material suitable for imparting shape retention to the mask body 2.

Specifically, the basis weight of the inner surface sheet 14 is preferably 20 g / m ² or more, more preferably 40 g / m ² or more, further preferably 60 g / m ² or more, and further. It is preferably 150 g / m ² or less, more preferably 120 g / m ² or less, and even more preferably 100 g / m ² or less. The basis weight of the outer surface sheet 16 is preferably 30 g / m ² or more, more preferably 50 g / m ² or more, further preferably 70 g / m ² or more, and 200 g / m. preferably ² or less, and more preferably more preferably 150 g / ^{m 2} or less, 100 g / ^{m 2} or less.

As shown in FIG. 4, the mask main body 2 has a first panel in a state where the first panel portion 10A and the second panel portion 10B are folded around the closing side end portion 6 so that the inner surface sheet 14 is on the inside. The edges of the portion 10A and the second panel portion 10B excluding the face-contact side end 5 (closed-side end 6, upper side edge 7 and lower side edge 8) are joined to each other to form the face-contact side. It is formed in the shape of a bag having an opening at the end 5. Specifically, in the mask main body 2 of the present embodiment, the upper side edge portion 7 and the second panel portion of the first panel portion 10A are in a state where the first panel portion 10A and the second panel portion 10B are overlapped with each other. The upper side edge portion 7 of the 10B is sealed by the upper side edge connecting portion 20, and the lower side edge portion 8 of the first panel portion 10A and the lower side edge portion 8 of the second panel portion 10B are on the lower side. It is sealed by the side edge joint 22.

In addition, the term "bonding" in the present specification includes a configuration in which the first panel portion 10A and the second panel portion 10B are ex postbonded by any means such as heat welding, ultrasonic welding, high frequency welding, and an adhesive. For example, it is assumed that the first panel portion 10A and the second panel portion 10B are integrally formed from the beginning. Therefore, for example, the closed end portion 6 in the present embodiment is closed from the beginning because the first panel portion 10A and the second panel portion 10B are integrally continuous, but in the present specification. , Such a blocked state is also included in "bonding".

As shown in FIG. 4, the upper side edge joint portion 20 has a line shape along the upper side edge portion 7, and the lower side edge joint portion 22 has a line shape along the lower side edge portion 8. It has a shape. Specifically, as shown in FIG. 4, the upper side edge joint portion 20 and the lower side edge joint portion 22 are such an upper side edge joint portion from the face-contact side end portion 5 to the closed side end portion 6. It is inclined with respect to the horizontal center line 13a so that the distance between the 20 and the lower side edge connecting portion 22 is gradually narrowed. Further, the upper side edge joint portion 20 and the lower side edge joint portion 22 deform the mask body 2 into a shape along the nose and chin to form a steam generator 1 having a good fit to the three-dimensional shape of the face. Therefore, it is curved in a concave shape that draws a gentle arc toward the horizontal center line 13a (inside of the

panel portions

10A and 10B) along the concave portion 12.

As shown in FIG. 4, the upper side edge connecting portion 20 is provided on the horizontal center line 13a side of the upper side edge portion 7 at a predetermined interval, whereby the upper side edge portion 7 and the upper side are provided. A dry edge 24 that has not been subjected to a bonding treatment is formed between the edge bonding portion 20 and the edge bonding portion 20. Similarly, the lower side edge connecting portion 22 is also provided on the horizontal center line 13a side of the lower side edge portion 8 at a predetermined interval, whereby the lower side edge portion 8 and the lower side are provided. A dry edge 24 that has not been subjected to a bonding treatment is formed between the side edge bonding portion 22 and the side edge bonding portion 22. The upper side edge connecting portion 20 is provided inside with an interval of 0.5 mm or more and 5.0 mm with respect to the upper side edge portion 7, and the lower side edge connecting portion 22 is provided on the lower side edge portion 8 It is provided inside with an interval of 0.5 mm or more and 5.0 mm.

The mask body 2 having the above configuration attaches a finger to the recessed portion 12 of the upper side edge portion 7 and the recessed portion 12 of the lower side edge portion 8, and approaches the upper side edge portion 7 and the lower side edge portion 8 to each other. By pressing in the direction of the face, the uncoupled arcuate peripheral portion (opening of the face-contact side end portion 5) of the first panel portion 10A and the second panel portion 10B expands, and a flat bag-like shape (opening of the face-contact side end portion 5) is formed. It is configured to transform from (see FIG. 4) to a three-dimensional cup shape (see FIG. 1).

The mask body 2 has enough rigidity to maintain a cup shape (retain shape) when the user holds it in his hand. Further, as shown in FIG. 1, the mask body 2 is in a cup-shaped shape (a state in which the opening of the face-contacting side end portion 5 is widened), and the face-contacting side end portion 5 to the closing side end portion 5 It has a peripheral surface that tapers toward 6. Further, the peripheral surface of the mask body 2 has a recessed portion 12 that is concave toward the internal space 4, and the recessed portion 12 is located at a position facing the peripheral surface of the mask body 2 (upper side in the present embodiment). A pair is formed on the side edge portion 7 and the lower side edge portion 8).

Further, as shown in FIGS. 5 and 6, the mask body 2 has a size such that the opening of the face-contacting end portion 5 can cover the user's mouth and nose.

Specifically, the width W (see FIG. 8) of the opening of the face-contacting side end 5 in the state where the mask body 2 is held in a cup shape is preferably 40 mm or more, and preferably 60 mm or more. More preferably, it is more preferably 80 or more, further preferably 170 mm or less, further preferably 150 mm or less, further preferably 130 mm or less. As described above, when the width W of the opening of the face-contact side end portion 5 is 40 mm or more, the distance between the steam generator 3 and the mouth and nose is made large enough to cover the user's mouth and nose. There is an advantage that the temperature can be prevented from being too far apart, and an appropriate feeling of warmth and the amount of steam can be obtained. Further, since the width W of the opening of the face contact side end portion 5 is 170 mm or less, it is possible to prevent the steam generator 3 from getting too close to the mouth and nose, and it is possible to obtain an appropriate warmth and steam amount. There is. Further, since the width W of the opening of the face-contact side end portion 5 is set, it can be used without any problem even in a configuration in which the size of the opening described later can be changed. As shown in FIG. 8, the “width W of the opening of the face-contacting end portion 5” refers to the center and the second of the face-contacting side end portion 5 of the first panel portion 10A in a cup-shaped shape-retaining state. 2 Refers to the straight line distance between the panel portion 10B and the center of the face contact side end portion 5.

Further, the mask body 2 preferably has an opening height H (see FIG. 8) of the face-contacting end portion 5 in a cup-shaped shape-retaining state of 50 mm or more, and more preferably 70 mm or more. , 90 or more, more preferably 150 mm or less, more preferably 140 mm or less, still more preferably 130 mm or less. As described above, when the height H of the opening of the face-contact side end portion 5 is 50 mm or more, the steam generator 3 and the mouth and nose are made large enough to cover the user's mouth and nose. There is an advantage that it is possible to prevent the distance from being too far and to obtain an appropriate feeling of warmth and the amount of steam. Further, when the height H of the opening of the face contact side end portion 5 is 150 mm or less, it is possible to prevent the steam generator 3 from getting too close to the mouth and nose, and to obtain an appropriate feeling of warmth and the amount of steam. There are advantages. Further, since the height H of the opening of the face contact side end portion 5, it can be used without any problem even in a configuration in which the size of the opening described later can be changed. As shown in FIG. 8, the “height H of the opening of the face-contact side end portion 5” is the intersection of the upper side edge portion 7 and the face-contact side end portion 5 in the state of being held in a cup shape. And the straight line distance between the lower side edge portion 8 and the intersection of the face contact side end portion 5.

As shown in FIGS. 5 and 6, the mask body 2 has an internal space 4 formed between the mask body 2 and the user's face in a state where the user's mouth and nose are covered by the opening of the face-contact side end portion 5. The volume of is preferably 50 ml or more and 200 ml or less, and more preferably 100 ml or more and 150 ml or less. By setting the volume of the internal space 4 to be equal to or less than the above upper limit value, it is possible to impart a sufficient feeling of steam while maintaining good handleability and appearance. Further, by setting the volume of the internal space 4 to the above lower limit value or more, it becomes easy to breathe and it becomes easy to add vapor and aroma components.

The internal space 4 formed between the mask body 2 and the user's face is not limited to the closed space formed by the mask body 2 coming into contact with the user's face, and the mask body 2 and the user's face It may have a slight gap between the two. The slight gap mentioned here means a gap that can be generated when the steam generator 1 is attached by a normal method. Even if there is such a gap, the gap is large enough not to impair the effect of the steam generated by the steam generator 3, so that the gap is also closed along the edge of the mask body 2. It can be treated as if it were.

[Volume measurement method of internal space]
Here, the volume of the internal space 4 can be measured as follows. That is, using a human head model modeled using the average human head data (latest data at the time of filing) manufactured by Digital Human Technology Co., Ltd., the usage state of the steam generator 1 is reproduced, and a three-dimensional measuring machine is used. It can be converted into three-dimensional data and measured. Further, as shown in Japanese Patent Application Laid-Open No. 2012-205926, a liquid-impermeable film is placed inside the mask, and water is poured into this portion so that the state is the same as when the mask is attached. Almost the same value can be obtained by measuring the amount of remaining water with the face facing downward. Therefore, if it is difficult to convert into three-dimensional data due to the shape of the steam generator 1, JP2012-205926 The volume of the internal space 4 may be measured by the method disclosed in the publication.

[Structure of steam generator]
The steam generator 3 is configured to generate heat and generate water vapor by reacting with oxygen in the air, and to supply the warmed water vapor to the user. As the form of such a vapor generator 3, for example, a mixture of powders, a sheet such as a papermaking sheet, or a coating sheet in which a dispersion liquid or the like is coated on a base material can be adopted. Further, the steam generator 3 preferably contains an oxidizing metal, a carbon component, and water.

The metal to be oxidized is a metal that generates heat of oxidation reaction, and examples thereof include one or more powders and fibers selected from iron, aluminum, zinc, manganese, magnesium, and calcium. Among them, iron is preferable from the viewpoint of handleability, safety, manufacturing cost, storage stability and stability, and iron powder is particularly preferable. Examples of the iron powder include reduced iron powder and atomized iron powder. The particle size of the particles of the metal to be oxidized can be, for example, about 0.1 to 300 μm.

The carbon component has at least one function of water retention ability, oxygen supply ability and catalytic ability, and it is preferable that the carbon component has all three functions. As the carbon component, for example, one or more selected from activated carbon, acetylene black, and graphite can be used. Among these, activated carbon is more preferably used from the viewpoint of easily adsorbing oxygen when wet and keeping the water content in the heating element constant.

It is preferable that the steam generator 3 further contains a water-retaining material and has excellent steam dissipation. Examples of the water-retaining material include highly absorbent polymer (SAP), starch, zeolite, perlite, vermiculite and the like.

The planar shape of the steam generator 3 is not particularly limited, and may be circular, polygonal, or the like. From the viewpoint of manufacturing efficiency, ease of handling, and heating / humidifying effect, a quadrangle such as a rectangle or a substantially square is preferable, and from the viewpoint of ease of handling, a substantially square is more preferable. Further, for example, one or two or more steam generators 3 are preferably installed in the panel, and more preferably installed in both the left and right panels. The heat generation characteristics of the two steam generators may be the same or different, but are more preferably the same.

Further, the steam generator 3 may be scented with a fragrance composition. The fragrance composition may be either a natural fragrance or a synthetic fragrance, or a mixture thereof. The fragrance composition includes, for example, terpene hydrocarbons, monoterpene alcohols, sesquiterpene alcohols, aromatic alcohols, acetic acid esters, compounds having a carbonyl group, aroma components such as methyl dihydrojasmonate, and yonon. Examples include those containing essential oils and the like. These may be used alone or in admixture of 2 or more. In addition to the above-mentioned fragrance components and essential oils, the fragrance composition may contain, for example, the fragrance components and solvents described in "Synthetic Fragrance Chemistry and Product Knowledge" (written by Motokazu Indo, The Chemical Daily). As the solvent, one or more of dipropylene glycol, ethyl diglycol, isopropyl myristate, benzyl benzoate, triethyl citrate and diethyl phthalate can be contained.

The content of the fragrance composition can be appropriately selected according to the type and the specific use of the steam generator 1. Although it depends on the type of the fragrance composition, as a general range, the content of the fragrance composition is 0.5 or more and 6 or less parts by mass with respect to 100 parts by mass of the metal to be oxidized of the vapor generator 3. It is preferable, and more preferably 0.7 or more and 4.5 or less by mass.

As a method of perfume the vapor generator 3, when the fragrance composition is a liquid, there is a method of directly adding the fragrance composition to the vapor generator 3 by spraying or the like. There is also a method of perfume the constituent materials (sheet, raw material, etc.) of the steam generator 3 to obtain a perfume sheet, powdered perfume, or paste-like perfume. When the fragrance composition is a solid, there is a method of adding the fragrance composition by adsorbing the fragrance composition to the steam generator 3 or accommodating it in the steam generator 3.

Further, each of the steam generators 3 preferably has a cumulative steam generation amount (hereinafter referred to as "10-minute steam generation amount") released in 10 minutes from the start of steam generation of 250 mg or more, and 350 mg or more. Is more preferably 450 mg or more, more preferably 1000 mg or less, further preferably 850 mg or less, still more preferably 700 mg or less. By setting the amount of steam generated in this way, it is possible to supply an appropriate amount of steam in the first 10 minutes when the use of the steam generator 1 is started, so that the effect of steam can be more effectively applied. Can be done.

[Water vapor generation measurement method]
Here, the 10-minute steam generation amount of the steam generator 3 is a numerical value measured as follows using the device 30 shown in FIG. 7. The device 30 shown in FIG. 7 includes a measurement chamber (volume 2.1 L) 31 made of aluminum and an inflow path 32 for flowing dehumidified air (humidity less than 2%, flow rate 2.1 L / min) into the lower part of the measurement chamber 31. , An outflow path 33 for flowing air from the upper part of the measurement chamber 31, an inlet thermo-hygrometer 34 and an inlet flow meter 35 provided in the inflow path 32, and an outlet thermo-hygrometer 36 and an outlet flow rate provided in the outflow path 33. A total of 37 and a hygrometer (thermistor) 38 provided in the measurement chamber 31 are provided. As the thermometer 38, one having a temperature resolution of about 0.01 ° C. is used.

To measure the surface temperature of the surface of the steam generator 3 located on the skin side (the surface on the inner surface side of the mask body 2), the steam generator 3 is taken out from the oxygen blocking bag at the measurement environment temperature of 30 ° C. (30 ± 1 ° C.). , The surface of the steam generator 3 located on the skin side, that is, the steam release surface is placed on the measuring chamber 31, and a thermometer 38 with a metal ball (4.5 g) is placed on the measuring chamber 31 for measurement. .. In this state, dehumidified air is flowed from the lower part, and the difference in absolute humidity before and after the air flows into the measuring chamber 31 is obtained from the temperature and humidity measured by the inlet thermo-hygrometer 34 and the outlet thermo-hygrometer 36, and further, the inlet The amount of water vapor released by the steam generator 3 is calculated from the flow rates measured by the hygrometer 35 and the outlet hygrometer 37. Then, starting from the time when the steam generator 3 is taken out from the oxygen blocking bag, the total amount of water vapor measured up to 10 minutes later is defined as the steam generation amount for 10 minutes.

[How to use the steam generator]
Next, a method of using the steam generator 1 according to the present embodiment will be described.
In this embodiment, since the steam generator 3 is integrated with the mask body 2, the entire steam generator 1 is stored in an oxygen blocking bag. In this storage state, the mask body 2 is folded in a bag-like state.

First, the user opens the oxygen blocking bag at the time of use and takes out the steam generator 1 from the oxygen blocking bag. As a result, the steam generator 3 comes into contact with air, and the steam generator 3 starts to generate heat due to the oxidation reaction of the metal to be oxidized contained in the steam generator 3.

After removing the steam generator 1 from the oxygen blocking bag, the user puts his or her finger on the recess 12 of the upper side edge 7 of the mask body 2 and the recess 12 of the lower edge 8 as shown in FIG. The upper side edge portion 7 and the lower side edge portion 8 are pressed in a direction approaching each other. As a result, the uncoupled arcuate peripheral portion (opening of the face-contact side end portion 5) of the first panel portion 10A and the second panel portion 10B expands, and the mask body 2 changes from a flat bag shape. It transforms into a three-dimensional cup shape. The user brings the mask body 2 close to the face so that the mouth and nose are covered by the mask body 2 deformed into a cup shape in this way. At this time, it is preferable that the face-contacting end 5 of the mask body 2 is brought into close contact with the user's face, but the present invention is not limited to this, and the face-contacting side of the mask body 2 is not impaired. The end portion 5 may be used in a state of being separated from the user's face.

Then, when the steam generator 3 generates heat while the mouth and nose are covered by the mask body 2, the water contained in the steam generator 3 is heated by the heat, and steam at a predetermined temperature (steam) ( It becomes hot steam) and is discharged to the internal space 4 of the mask body 2 via the inner surface sheet 14 of the mask body 2 and supplied to the mouth and nose of the user. At this time, since the steam generator 3 is perfume, the aroma component is sucked by the user together with the steam. As described above, according to the steam generator 1 according to the present embodiment, the hot steam and the aroma component can be supplied to the user by a simple method.

As described above, the steam generator 1 according to the present embodiment has a mask body 2 that can be deformed into a bottomed tubular shape (cup shape) having an opening at the end portion 5 on the face contact side, and an internal space 4 of the mask body 2. The mask body 2 in a cup-shaped deformed state is provided with a steam generator 3 capable of generating steam, and has a peripheral surface that tapers from the face-contact side end portion 5 to the obstruction side end portion 6. The peripheral surface has a concave portion 12 that is concave toward the internal space 4, and a pair of the concave portions 12 are formed at positions facing each other on the peripheral surface of the mask main body 2.

Then, according to the steam generator 1 having such a configuration, as shown in FIG. 6, when the user's mouth and nose are covered with the opening of the face-contact side end portion 5, the upper side edge portion 7 is covered. The inner surface side 12b of the formed recessed portion 12 (one recessed portion 12) fits the user's nose, and the inner surface side of the recessed portion 12 (the other recessed portion 12) formed on the lower side edge portion 8. Since 12b fits the user's chin, it is possible to improve the fit to the user's face and prevent the leakage of steam generated in the internal space 4.

Further, as shown in FIG. 6, the steam generator 1 according to the present embodiment is formed on the upper side edge portion 7 when the user's mouth and nose are covered with the opening of the face contact side end portion 5. The outer surface side 12a of the recess 12 fits the user's finger (for example, the index finger), and the outer surface 12a of the recess 12 formed on the lower side edge 8 fits the user's other finger (for example, the thumb). Because it fits, it has excellent grip when held by hand during use.

Further, in the steam generator 1 according to the present embodiment, the mask main body 2 and the user's face are compared with the case where the pair of recessed portions 12 are formed so that the pair of recessed portions 12 is not formed. Since it is possible to reduce the volume of the space formed between the two, it is possible to improve the steam effect on the amount of steam. That is, according to the steam generator 1 according to the present embodiment, the same steam effect can be obtained with a small amount of steam, or more excellent with the same amount of steam, as compared with the case where the pair of recesses 12 are not formed. It is possible to obtain a steam effect.

In particular, in the steam generator 1 according to the present embodiment, a pair of upper and lower side edge coupling portions (upper side edge coupling portion 20 and lower side edge coupling portion 22) for connecting the first panel portion 10A and the second panel portion 10B. Is provided inside with an interval of 0.5 mm or more and 5.0 mm or less with respect to the upper side edge portion 7 and the lower side edge portion 8, whereby the upper side edge portion 7 and the lower side edge portion 7 and the lower side edge portion 7 are provided. A dry edge 24 is formed between the portion 8 and the side

edge connecting portions

20 and 22. According to the steam generator 1 having such a configuration, it is possible to impart flexibility to the upper side edge portion 7 and the lower side edge portion 8, so that the fingers hurt when held by hand during use. It has the additional advantage of being difficult.

Further, in the steam generator 1 according to the present embodiment, since the face contact side end portion 5 is formed in an arc shape, the fit to the user's cheek is improved, and the fit to the user's face is further improved. It becomes possible to prevent the leakage of steam generated in the internal space 4 by improving the above.

Further, in the steam generator 1 according to the present embodiment, by arranging the steam generator 3 on both the first panel portion 10A and the second panel portion 10B, it is possible to inhale the same amount of steam into the left and right nasal cavities. It will be possible. Further, when the amount of steam generated for 10 minutes supplied to the internal space 4 by the steam generator 3 arranged in the first panel portion 10A and the steam generator 3 arranged in the second panel portion 10B exceeds 500 mg, Sufficient supply of hot steam to the throat and nose enhances the function of the airway mucosa, activates ciliary movements, and can obtain a preventive effect on colds and influenza.

Further, in the steam generator 1 according to the present embodiment, since the steam generator 3 is scented, for example, by adding a pleasant scent to the steam, it is possible to enhance the relaxing effect.

Although the preferred embodiments of the present invention have been illustrated above, the technical scope of the present invention is not limited to the scope described in the above-described embodiments. Various changes or improvements can be made to each of the above embodiments.

For example, in the above-described embodiment, it has been described as a type that does not have an ear hook and is held by the user (a type in which the mask body 2 is held and used by hand), but the present invention is not limited to this, for example. It is also possible to use it without holding it by hand by inserting it inside the ear-hook mask.

In the above-described embodiment, the mask body 2 has been described as having an opening capable of covering the user's mouth and nose, but the present invention is not limited to this, and the opening of the mask body 2 is the user's mouth and nose. It may be large enough to cover at least one of the above.

Further, the mask body 2 may have a configuration in which the size of the opening can be changed. As a configuration for changing the size of such an opening, for example, as shown in FIGS. 9A and 9B, a part of the

mask bodies

2A and 2B (upper side temporary coupling portion 40, lower portion). An example is a configuration in which the opening is enlarged by breaking the side temporary coupling portion 42). The upper temporary joint portion 40 and the lower temporary joint portion 42 are, for example, portions where the first panel portion 10A and the second panel portion 10B are joined in a perforated or continuous seal shape, and the first panel portion 10A is formed. And the second panel portion 10B can be broken by an operation of separating them from each other. This bond is not limited to the perforated shape or the continuous seal shape, but the first panel portion 10A and the second panel portion 10B are bonded at the upper temporary joint portion 40 and the lower temporary joint portion 42, and the breakage occurs as described above. Any method may be used if possible. The meaning of "combination" is as described above.

In such a modified example, the upper temporary connecting portion 40 is the face-contacting side end from the intersection of the upper side edge portion 7 and the face-contacting side end portion 5, as in the mask body 2A shown in FIG. 9A, for example. Any configuration such as a configuration extending along the portion 5 or a configuration extending from the middle portion of the upper side edge portion 7 toward the face-contacting side end portion 5 as in the mask main body 2B shown in FIG. 9B, for example. It can be adopted. Further, the lower temporary joint portion 42 is provided along the face contact side end portion 5 from the intersection of the lower side edge portion 8 and the face contact side end portion 5, as in the mask body 2A shown in FIG. 9A, for example. It is possible to adopt an arbitrary configuration such as a configuration extending from the middle portion of the lower side edge portion 8 toward the face-contact side end portion 5 as in the mask main body 2B shown in FIG. 9B. is there.

According to the mask

main bodies

2A and 2B according to such a modification, it is possible to break the upper temporary connecting portion 40 and the lower temporary connecting portion 42 and freely change the size of the opening. It is possible for the user to adjust the size of the opening according to the preference of the user, the age of the user (adult, child), the size of the face, and the like.

In the above-described embodiment, the mask main body 2 has been described as having a foldable configuration, but the present invention is not limited to this, and the shape may be retained in advance.

In the above-described embodiment, the mask main body 2 folds a single sheet-like member in which the first panel portion 10A and the second panel portion 10B are integrally continuous at the closed side end portion 6, and the upper side edge portion 7 and Although it has been described as being formed in a bag shape by connecting the lower side edge portions 8, the present invention is not limited to this. For example, the mask body 2 is made by superimposing the first panel portion 10A and the second panel portion 10B separated from each other and connecting the closed side end portion 6, the upper side edge portion 7, and the lower side edge portion 8 to form a bag. It may be formed in a shape.

In the above-described embodiment, it has been described that one recessed portion 12 is formed on each of the upper side edge portion 7 and the lower side edge portion 8, but the present invention is not limited to this, and the number of recessed portions 12 is arbitrary. It is possible to change. When a plurality of recessed portions 12 are formed in this way, it is possible to improve the fit of the fingers when gripping the mask body 2 with a plurality of fingers, and to support the mask body 2 more stably. There is an advantage that it becomes.

In the above-described embodiment, the first panel portion 10A and the second panel portion 10B have been described as having vertically symmetrical shapes, but the present invention is not limited to this, and the vertically asymmetrical shapes may be used. For example, the number of recessed portions 12 formed on the upper side edge portion 7 and the number of recessed portions 12 formed on the lower side edge portion 8 may be different. As an example of such a modification, as in the mask body 2C shown in FIG. 10, two

recesses

12A and 12B are formed on the upper side edge 7, and one recess 12 is formed on the lower edge 8. The configuration to be formed is illustrated. The recessed

portions

12A and 12B formed in the upper side edge portion 7 have a smaller radius of curvature and a shorter arc length than the recessed portion 12 formed in the lower side edge portion 8. According to such a mask body 2C, for example, two fingers (for example, the index finger and the middle finger, or the middle finger and the ring finger) are attached to the two recessed

portions

12A and 12B formed in the upper side edge portion 7, and the lower part is attached. Since it is possible to grip the mask body 2C with one finger (for example, the thumb) attached to the recessed portion 12 formed in the side edge portion 8, when gripping with one upper and lower finger. Compared with this, there is an advantage that the mask body 2C can be stably supported.

In the above-described embodiment, it has been described that a finger is attached to the recessed portion 12 formed in the upper side edge portion 7 and the lower side edge portion 8, but the present invention is not limited to this, and as shown in FIGS. 11 and 12, for example. A finger may be inserted into a through hole 54 or a slit 56 formed in the vicinity of the recessed portion 12. As such a modification, for example, as in the mask body 2D shown in FIG. 11, the

margins

50 and 52 extending from the peripheral surface of the mask body 2D (specifically, the upper side edge portion 7 and the lower side). A through hole having margins 50, 52) extending from the edge 8 in a brim shape and having a size that allows the user's finger to be inserted at a position close to the recess 12 in the

margins

50, 52. The configuration in which each of the 54 is formed is exemplified. Further, instead of the through hole 54, a slit 56 through which a finger can be inserted may be formed as in the mask body 2E shown in FIG. 12, for example. Further, in FIGS. 11 and 12, one through hole 54 and one slit 56 are provided in the upper side edge portion 7 and the lower side edge portion 8, but the number thereof is not limited. For example, two may be provided on the upper side edge portion 8 and one may be provided on the lower side edge portion 8. In such a case, the

mask bodies

2D and 2E can be stably supported as compared with the case of gripping with one upper and lower finger. According to

such mask bodies

2D and 2E, there is an advantage that the

mask bodies

2D and 2E are less likely to get tired even if they are held for a long time.

In the above-described embodiment, the face-contact side end portion 5 of the first panel portion 10A and the second panel portion 10B has been described as being formed in an arc shape, but the present invention is not limited to this, and any shape such as a linear shape is not limited to this. Can be adopted.

In the above-described embodiment, it has been described that the arc-shaped face-contacting

arc portions

7a and 8a and the

closed arc portions

7b and 8b are provided so as to sandwich the recessed portion 12 so as to sandwich the recessed portions 12. However, the present invention is not limited to this, and for example, both sides of the recessed portion 12 may be formed linearly.

In the above-described embodiment, it has been described that dry edges are formed on the upper side edge portion 7 and the lower side edge portion 8 of the first panel portion 10A and the second panel portion 10B, but the present invention is not limited to this and is dry. The configuration may be such that no edge is formed.

In the above-described embodiment, the steam generator 3 is provided for each of the first panel portion 10A and the second panel portion 10B, but the present invention is not limited to this, and for example, the first panel portion 10A and A plurality of configurations may be provided in each of the second panel portions 10B, or may be provided in only one of the first panel portion 10A and the second panel portion 10B. Further, the structure is not limited to the configuration in which the steam generator 3 is included in the first panel portion 10A and the second panel portion 10B, and a pocket-shaped storage portion is provided on the inner surface of the mask main body 2 and the steam generator 3 is provided in the storage portion. The steam generator 3 may be attached and detached, or the steam generator 3 may be fixed to the inner surface of the mask body 2 by using a fixing means such as an adhesive. Further, in the type in which the steam generator 3 is retrofitted to the mask body 2 as described above, only the steam generator 3 may be stored in an oxygen blocking bag. When a plurality of steam generators 3 are provided, the steam characteristics and shapes of the steam generators 3 may be the same or different, but from the viewpoint of uniformly supplying steam and scent to the user, the same steam has the same shape. It is preferable to have characteristics.

In the above-described embodiment, the steam generator 3 has been described as being scented, but the present invention is not limited to this, and a steam generator that is not scented may be used.

It is clear from the description of the claims that the above-mentioned modifications are included in the scope of the present invention.

Regarding the above-described embodiment, the present invention further discloses the following steam generator.

<1>
A steam generator including a bottomed tubular mask body having an opening at the end on the face contact side and a steam generator capable of generating steam in the internal space of the mask body.
The mask body has a peripheral surface that tapers from the face-contact side end portion toward the obstruction-side end portion located on the opposite side of the face-contact side end portion.
The peripheral surface of the mask body has a recessed portion that is concave toward the internal space.
A pair of recessed portions are formed at positions facing each other on the peripheral surface of the mask body.

<2>
The mask body includes a first panel portion that forms a half-peripheral surface of the mask body and a second panel portion that forms the remaining half-peripheral surface.
The first panel portion and the second panel portion are formed in a bag shape in which the edge portions other than the face contact side end portion are connected to each other, and by expanding the opening of the face contact side end portion. It is configured to be deformable into the bottomed tubular shape.
The steam generation according to <1>, wherein the first panel portion and the second panel portion have the recessed portion on a pair of side edge portions extending from the face contact side end portion to the closed side end portion. Ingredients.
<3>
The pair of side edge portions are provided with side edge joint portions for connecting the first panel portion and the second panel portion to each other, and each side edge joint portion has a shape along the recessed portion. The steam generator according to <2> above.
<4>
Each side edge joint is provided inside at a distance of 0.5 mm or more and 5.0 mm or less with respect to the side edge, and a dry edge is provided between the side edge and the side edge joint. The steam generator according to <3> above, wherein the steam generator is formed.

<5>
The steam generator according to any one of <2> to <4>, wherein the first panel portion and the second panel portion have an arc-shaped end on the face-contact side.
<6>
The face-contacting end portion preferably has a radius of curvature of 75 mm or more and 200 mm or less, more preferably 80 mm or more and 120 mm or less, and further preferably 85 mm or more and 100 mm or less. The steam generator according to <5>.
<7>
The face-contacting end portion preferably has an arc length of 160 mm or more and 220 mm or less, more preferably 170 mm or more and 210 mm or less, and preferably has an arc length of 180 mm or more and 200 mm or less. The steam generator according to <5> or <6>, wherein is more preferable.

<8>
The steam generator according to any one of <2> to <7>, wherein the steam generator is arranged on both the first panel portion and the second panel portion with the closed end portion as a boundary. ..
<9>
The steam generator is preferably arranged so that the distance between the end of the steam generator on the closed side end side and the closed end side is 15 mm or less, preferably 12 mm or less. The steam generator according to <8>, wherein the steam generator is more preferably arranged, and the shortest distance is preferably 5 mm or more, and more preferably 7 mm or more.
<10>
The steam generator is preferably arranged so that the distance between the end of the steam generator on the face-contact side end side and the face-contact side end is 15 mm or more, preferably 20 mm or more. The above <8> or <9>, wherein the arrangement is more preferably 30 mm or less, and the shortest distance is more preferably 25 mm or less. Steam generator.

<11>
The steam generator according to any one of <1> to <10>, wherein the steam generator has a steam generation amount of 250 mg or more for 10 minutes.
<12>
The amount of steam generated for 10 minutes is more preferably 350 mg or more, further preferably 450 mg or more, preferably 1000 mg or less, more preferably 850 mg or less, and 700 mg. The steam generator according to <11>, which is more preferably as follows.

<13>
The steam generator according to any one of <1> to <12>, wherein the steam generator is sandwiched between two or more non-woven fabrics.

<14>
The steam generator according to any one of <1> to <13>, wherein the steam generator is perfume.

<15>
The steam generator according to any one of <1> to <14>, wherein the mask body can cover the user's mouth and nose.
<16>
The volume of the internal space formed between the mask body and the user's face is preferably 50 ml or more and 200 ml or less when the user's mouth and nose are covered with the opening at the end of the face contact side. The steam generator according to <15>, wherein the amount is 100 ml or more and 150 ml or less.
<17>
When the mask body covers the user's mouth and nose with the opening of the face-contacting end, the inner surface side of one of the concave portions fits the user's nose, and the inner surface side of the other concave portion fits the user's nose. The steam generator according to <15> or <16>, which fits the user's jaw.

<18>
In the mask body, the width of the opening of the face-contacting end portion in a state where the opening of the face-contacting side end portion is widened is preferably 40 mm or more, more preferably 60 mm or more, and more preferably 80 or more. The steam generator according to any one of <1> to <17>, wherein the steam generator is more preferably 170 mm or less, more preferably 150 mm or less, and further preferably 130 mm or less.

<19>
The height of the opening of the face-contacting end of the mask body in a state where the opening of the face-contacting end is widened is preferably 50 mm or more, more preferably 70 mm or more, and more preferably 90 or more. The steam generator according to any one of <1> to <18>, wherein the amount is more preferably 150 mm or less, more preferably 140 mm or less, and further preferably 130 mm or less. ..

<20>
The steam generator according to any one of <1> to <19>, wherein the recessed portion is concave toward the end side on the face contact side.

<21>
The recessed portion preferably has a radius of curvature of 10 mm or more and 50 mm or less, more preferably 20 mm or more and 40 mm or less, and further preferably 25 mm or more and 35 mm or less of the radius of curvature at the crown. The steam generator according to any one of <1> to <20>, which is preferable.

<22>
The recessed portion preferably has an arc length of 20 mm or more and 60 mm or less, more preferably 30 mm or more and 50 mm or less, and has an arc length of 35 mm or more and 45 mm or less at the crown portion. The steam generator according to any one of <1> to <21>, more preferably.

<23>
The mask body includes an inner surface sheet that forms an inner surface and an outer surface sheet that forms an outer surface.
The basis weight of the inner sheet is preferably 20 g / ^{m 2} or more, more preferably 40 g / ^{m 2} or more, further preferably 60 g / ^{m 2} or more, preferably 150 g / ^{m 2} It is less than or equal to, more preferably 120 g / m ² or less, still more preferably 100 g / m ² or less.
The basis weight of the outer surface sheet 16 is preferably 30 g / m ² or more, more preferably 50 g / m ² or more, further preferably 70 g / m ² or more, and preferably 200 g / m. ² or less, more preferably 150 g / ^{m 2} or less, and further preferably said at 100 g / ^{m 2} or less <1> to steam generation device according to any one of <22>.

<24>
The steam generator according to any one of <1> to <23>, wherein the mask body is configured so that the size of the opening can be changed.
<25>
The steam generator according to <24>, wherein the mask body is configured so that the size of the opening can be changed by breaking a part of the mask body.

<26>
The recessed portion is formed on the upper side edge portion and the lower side edge portion of the mask body, respectively.
The recessed portion formed on the upper side edge portion and at least one of the recessed portions formed on the lower side edge portion are described in any one of <1> to <25> in which a plurality of the recessed portions are formed. Steam generator.
<27>
The steam generator according to <26>, wherein two recessed portions are formed on the upper side edge portion, and one recessed portion is formed on the lower side edge portion.
<28>
The steam generation according to <27>, wherein the concave portion formed on the upper side edge portion has a radius of curvature smaller and a shorter arc length than the concave portion formed on the lower side edge portion. Ingredients.

<29>
The mask body has a margin portion extending from the peripheral surface of the mask body, and a through hole or a slit through which a user's finger can be inserted is formed at a position close to the recessed portion in the margin portion. The steam generator according to any one of <1> to <28>.

<30>
The steam generator according to any one of <1> to <29>, which is a type that does not have an ear hook and is held by the user.

1: Steam generator 2: Mask body 3: Steam generator 4: Internal space 5: Face-contact side end 6: Closed side end 7: Upper side edge 8: Lower side edge 10A: First panel 10B: Second panel part 12: Recessed part 14: Inner surface sheet 16: Outer surface sheet 20: Upper side edge joint part (side edge joint part)
22: Lower side edge joint (side edge joint)
24: Dry edge

Claims

A steam generator including a bottomed tubular mask body having an opening at the end on the face contact side and a steam generator capable of generating steam in the internal space of the mask body.
The mask body has a peripheral surface that tapers from the face-contact side end portion toward the obstruction-side end portion located on the opposite side of the face-contact side end portion.
The peripheral surface of the mask body has a recessed portion that is concave toward the internal space.
The recessed portions are a pair of steam generators formed at opposite positions on the peripheral surface of the mask body.
The mask body includes a first panel portion that forms a half-peripheral surface of the mask body and a second panel portion that forms the remaining half-peripheral surface.
The first panel portion and the second panel portion are formed in a bag shape in which the edge portions other than the face contact side end portion are connected to each other, and by expanding the opening of the face contact side end portion. It is configured to be deformable into the bottomed tubular shape.
The steam generator according to claim 1, wherein the first panel portion and the second panel portion have the recessed portion on a pair of side edge portions extending from the face contact side end portion to the closed side end portion. ..
The pair of side edge portions are provided with side edge coupling portions for connecting the first panel portion and the second panel portion to each other.
The steam generator according to claim 2, wherein each side edge connecting portion has a shape along the recessed portion.
Each side edge joint portion is provided inside at an interval of 0.5 mm or more and 5.0 mm or less with respect to the side edge portion.
The steam generator according to claim 3, wherein a dry edge is formed between the side edge portion and the side edge joint portion.
The steam generator according to any one of claims 2 to 4, wherein the first panel portion and the second panel portion have an arc-shaped end on the face-contact side.
The steam generator according to any one of claims 1 to 5, wherein the steam generator has a steam generation amount of 250 mg or more for 10 minutes.
The steam generator according to any one of claims 1 to 6, wherein the steam generator is sandwiched between two or more non-woven fabrics.
The steam generator according to any one of claims 1 to 7, wherein the steam generator is perfume.