CN113874060B

CN113874060B - Steam generator

Info

Publication number: CN113874060B
Application number: CN202080038659.XA
Authority: CN
Inventors: 土屋滋美; 吉井圭二; 冈本拓也
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2019-05-24
Filing date: 2020-01-08
Publication date: 2023-10-13
Anticipated expiration: 2040-01-08
Also published as: CN113874060A; KR102623141B1; WO2020240906A1; JP2020192310A; JP7309562B2; KR20210099069A

Abstract

A steam generator comprising a mask body having a bottomed tubular shape and having an opening at a face side end, and a steam generator capable of generating steam in an internal space of the mask body, wherein the mask body has a peripheral surface narrowing from the face side end toward a closed side end located on the opposite side of the face side end, the peripheral surface of the mask body has a recess recessed toward the internal space, and a pair of recesses are formed at opposite positions of the peripheral surface of the mask body.

Description

Steam generator

Technical Field

The present invention relates to a steam generator.

Background

Conventionally, a steam generator capable of supplying warm steam to the throat and nose has been known (japanese patent application laid-open publication No. 2011-188947). The steam generator disclosed in Japanese patent application laid-open No. 2011-188947 is provided with: a 1 st sheet body (panel) and a 2 nd sheet body which are joined to each other so as to form a bag shape having an opening at a part thereof; and a flat plate-shaped steam generator contained in each of the sheets, wherein the openings between the 1 st sheet and the 2 nd sheet are opened to form a cup shape capable of covering the mouth and nose of the user. According to the steam generator disclosed in japanese patent application laid-open publication No. 2011-188947, the function of the respiratory mucosa can be improved by supplying warm steam to the throat and nose, and the effect of preventing cold, influenza, and the like can be obtained.

Disclosure of Invention

The present invention relates to a steam generator including a mask body having a bottomed tubular shape and having an opening at a face side end, and a steam generator capable of generating steam in an internal space of the mask body, wherein the mask body has a peripheral surface that narrows from the face side end toward a closed side end located on an opposite side of the face side end, the peripheral surface of the mask body has a recessed portion recessed toward the internal space, and a pair of the recessed portions are formed at opposing positions of the peripheral surface of the mask body.

Drawings

Fig. 1 is a view showing a steam generator according to an embodiment of the present invention.

Fig. 2 is a developed view showing a developed state of the mask body of the steam generator according to the present embodiment.

Fig. 3 is a cross-sectional view taken along line A-A' of fig. 2.

Fig. 4 is a view showing a folded state of the steam generator according to the present embodiment.

Fig. 5 is a view showing a state of use of the steam generator according to the present embodiment.

Fig. 6 is a cross-sectional view of the steam generator according to the present embodiment in a state of being deformed into a cup shape.

Fig. 7 is a schematic view showing an apparatus for measuring the amount of water vapor generation.

Fig. 8 is a view showing a state of the cup body in which the surface-side end portion is opened when viewed from a direction opposite to the opening.

Fig. 9 is a view showing a mask body according to a modification.

Fig. 10 is a view showing a mask body according to another modification.

Fig. 11 is a view showing a mask body according to another modification.

Fig. 12 is a view showing a mask body according to another modification.

Detailed Description

The steam generator disclosed in japanese patent application laid-open No. 2011-188947 has room for improvement from the viewpoints of the fitting property to the face of a user and the grasping property when the steam generator is grasped with the hand during use.

The present invention relates to a steam generator excellent in the fitting to the face of a user and the grasping performance when the steam generator is held by a hand during use.

Specifically, the present invention relates to a steam generator comprising: a mask body having a bottomed tubular shape with an opening at an end portion on a face side; and a steam generator capable of generating steam in the internal space of the mask body, wherein the mask body has a peripheral surface that narrows from the facing side end toward the closing side end located on the opposite side of the facing side end, the peripheral surface of the mask body has a recess recessed toward the internal space, and a pair of the recesses are formed at opposite positions of the peripheral surface of the mask body.

The steam generator of the present invention is excellent in the fitting property to the face of a user and the grasping property when the steam generator is grasped by a hand during use.

[ mode for carrying out the invention ]

Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the accompanying drawings. The following embodiments are not intended to limit the invention according to the claims, and not all combinations of the features described in the embodiments are essential to the solution of the invention.

[ integral Structure of steam Generator ]

As shown in fig. 1, a steam generator 1 according to the present embodiment includes: a cup-shaped mask body 2 capable of covering the mouth and nose of a user; and a steam generator 3 capable of generating steam in the internal space 4 of the mask body 2.

In the present specification, "cup-shaped" means a cylinder shape in which one end is open and the other end is closed, that is, a bottomed cylinder shape, and the shape of the main body portion is not limited to a cylindrical shape, but includes, for example, a square cylinder shape. In the present specification, the end of the mask body 2 formed in a cup shape on the open side is referred to as "face side end 5", and the end on the closing side opposite to the face side end 5 is referred to as "closing side end 6". Further, in the present specification, the upper edge portion in a state where the "attaching side end portion 5" and the "closing side end portion 6" are arranged in the left-right direction as viewed in the planar direction (i.e., the state of fig. 4) of the mask body 2 is referred to as "upper side edge portion 7", and the lower edge portion in this 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 mask body 2 held in a cup shape covers the mouth and nose of the user, and the "lower side edge 8" is an edge located on the mouth side (jaw side) in this state. However, since the mask body 2 of the present embodiment is vertically symmetrical with respect to the horizontal center line 13a described later, it can be worn upside down, that is, with the lower side edge 8 positioned on the nose side and the upper side edge 7 positioned on the mouth side (jaw side), by the user.

[ construction of mask body ]

As shown in fig. 1, the mask body 2 includes a 1 st sheet portion 10A forming a half peripheral surface of the mask body 2 and a 2 nd sheet portion 10B forming the remaining half peripheral surface. Fig. 2 is a plan view of the mask body 2 in a state in which the inner surface thereof is unfolded so as to be cup-shaped, and fig. 3 is a cross-sectional view taken along the line A-A' of fig. 2. As shown in fig. 2, the 1 st sheet portion 10A and the 2 nd sheet portion 10B are integrally continuous at the closing side end portion 6, and have a shape symmetrical to each other about the closing side end portion 6 of the two sheet portions 10A and 10B. In other words, the mask body 2 is composed of a sheet-like member in which the 1 st sheet portion 10A and the 2 nd sheet portion 10B having the same shape and the same size are arranged in bilateral symmetry.

As shown in fig. 2, the 1 st sheet portion 10A and the 2 nd sheet portion 10B are each formed in a shape that narrows from the facing side end 5 toward the closing side end 6, and in this embodiment are formed in a substantially fan shape. Specifically, the 1 st sheet portion 10A and the 2 nd sheet portion 10B are formed with the facing side end portion 5 in an arc shape, and the closing side end portion 6 is formed in a substantially straight line shape. Further, in the 1 st sheet portion 10A and the 2 nd sheet portion 10B, the upper side edge portion 7 from the upper end of the facing side end portion 5 to the upper end of the closing side end portion 6 and the lower side edge portion 8 from the lower end of the facing side end portion 5 to the lower end of the closing side end portion 6 are inclined in directions intersecting each other on the closing side end portion 6 side. Further, the 1 st sheet portion 10A and the 2 nd sheet portion 10B have shapes that are vertically symmetrical with respect to a center line (hereinafter referred to as "horizontal center line 13 a") connecting the center of the face side end 5 of the 1 st sheet portion 10A and the center of the face side end 5 of the 2 nd sheet portion 10B.

The facing side end 5 has a radius of curvature of 75mm or more and 200mm or less, preferably 80mm or more and 120mm or less, and more preferably 85mm or more and 100mm or less. The facing side end 5 has an arc length of 160mm to 220mm, preferably 170mm to 210mm, and more preferably 180mm to 200 mm.

As shown in fig. 2, the 1 st sheet portion 10A and the 2 nd sheet portion 10B are formed with concave portions 12 at the upper side edge portion 7 and the lower side edge portion 8, respectively. The concave portion 12 is formed in a concave shape that describes a gentle arc toward the horizontal center line 13a (inside of each sheet portion 10A, 10B).

In the present embodiment, the concave portion 12 is a circular arc portion facing the inside of each sheet portion 10A, 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 have, in a range from the facing side end portion 5 to the closing side end portion 6, arcuate facing side arcuate portions 7a, 8a facing the outside of the respective sheet body portions 10A, 10B, arcuate concave portions 12, 12 facing the inside of the respective sheet body portions 10A, 10B, and arcuate closing side arcuate portions 7B, 8B facing the outside of the respective sheet body portions 10A, 10B, respectively, in a continuous wavy shape. That is, the concave portion 12 of the present embodiment is sandwiched between the facing side arc portions 7a and 8a and the closing side arc portions 7b and 8 b. The concave portion 12 of the upper edge 7 is a region from the apex of the contact surface side arc portion 7a (upper inflection point UF) to the apex of the closing side arc portion 7b (lower inflection point LF), and the concave portion 12 of the lower edge 8 is a region from the apex of the contact surface side arc portion 8a (upper inflection point UF) to the apex of the closing side arc portion 8b (lower inflection point LF).

In the present embodiment, the concave portion 12 is preferably concave toward the face-side end portion 5 side in order to efficiently transmit the pressing force of the fingers when deforming the mask body 2 into a cup shape to the face-side end portion 5 side and smoothly open the opening. As shown in fig. 2, it is particularly preferable that the intersection point of the recess direction 13B of the recess 12 of the upper side edge 7 and the recess direction 13c of the recess 12 of the lower side edge 8 is located closer to the facing side end 5 than the centroid position of the sheet portions 10A and 10B. Further, it is further preferable that the intersection point is located on the horizontal center line 13 a.

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

In the present embodiment, as shown in fig. 3, the mask body 2 has a multilayer structure. That is, the mask body 2 includes an inner surface sheet 14 and an outer surface sheet 16, and the inner surface sheet 14 is formed as an inner surface when cup-shaped, and the outer surface sheet 16 is formed as an outer surface when cup-shaped. The inner surface sheet 14 and the outer surface sheet 16 are formed in the same shape and the same size, and the steam generator 3 is disposed between these inner surface sheet 14 and outer surface sheet 16.

The steam generator 3 is disposed in both the 1 st sheet portion 10A and the 2 nd sheet portion 10B so as to be bilaterally symmetrical with respect to the closing side end portion 6. Specifically, from the viewpoint of increasing the temperature and absolute humidity in the steam generator 1 without suppressing the generation of water vapor and the viewpoint of suppressing the contact of the steam generator 3 with the skin, when the mouth and nose of the user are covered with the cup-shaped mask body 2, a space surrounded by the mouth, nose, cheek, and steam generator 3 of the user is generated (see fig. 6), and the steam generator 3 is preferably arranged in the vicinity of the closed side end 6 of the mask body 2 in a laterally symmetrical manner, as shown in fig. 2 and 3.

More specifically, the steam generators 3 are preferably arranged such that the distance D between the end of each steam generator 3 on the side of the closed end 6 and the closed end 6 ₁ (see FIG. 3) is 15mm or less, more preferably 12mm or less, and further preferably 5mm or more, more preferably 7mm or more, of the shortest distance. The steam generators 3 are preferably arranged such that the distance D between the end of each steam generator 3 on the surface side end 5 side and the surface side end 5 is equal to ₂ (see FIG. 3) is 15mm or more, more preferably 20mm or more, and further preferably 30mm or less, more preferably 25mm or less. In addition, these distances D ₁ And distance D ₂ Refers to the distance on the horizontal center line 13 a.

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, a hot melt adhesive is preferably used, but not limited thereto, and various known fixing methods can be used. Alternatively, instead of or in addition to the adhesive application to the outer surface sheet 16, the adhesive application to the inner surface sheet 14 may be employed.

The material of the inner surface sheet 14 and the outer surface sheet 16 is not particularly limited as long as it is a material having a certain air permeability, and materials conventionally used in the technical field of sanitary masks can be used. For example, a fiber sheet such as a nonwoven fabric or gauze can be used, and from the viewpoint of ease of processing and economy, and from the viewpoint of obtaining good shape retention, a nonwoven fabric is preferably used.

As a fiber raw material of the nonwoven fabric, for example, a polyester selected from PET (polyethylene terephthalate) and the like is preferable; polyolefins such as PE (polyethylene), PP (polypropylene) and ethylene-propylene copolymer; a rayon; 1 or more than 2 kinds of fibers in cotton and the like. The nonwoven fabric may be a single layer or a multilayer structure, and may be a nonwoven fabric produced by a hot air method, a spunbonding method, a needle punching method, a melt blowing method, a carding method, a hot melt method, a water-jet weaving method, a solvent bonding method, or the like, using the fibers of 1 or 2 or more types of the raw materials described above. When both the inner surface sheet 14 and the outer surface sheet 16 are made of a single layer or a plurality of layers of nonwoven fabrics, the steam generator 3 is sandwiched between 2 or more nonwoven fabrics.

From the standpoint of allowing the effect of the diffused steam to act efficiently on the body of the user of the steam generator 1, it is preferable that the inner surface sheet 14 has air permeability. On the other hand, the outer surface sheet 16 may be made of any material depending on the design of the product, and may be a breathable sheet or a non-breathable sheet, and may be stretchable or non-stretchable. Examples of the stretchable sheet include a sheet containing elastic fibers as constituent fibers, a sheet containing elastic filaments, and a sheet exhibiting stretchability by a structure such as rib knitting.

The inner surface sheet 14 and the outer surface sheet 16 may have a gram weight capable of exhibiting rigidity enough to hold the shape when the user holds the sheets in his or her hand. The inner surface sheet 14 is preferably selected from the constituent materials for the purpose of improving the feel of the skin, and the outer surface sheet 16 is preferably selected from the constituent materials suitable for imparting shape retention to the mask body 2.

Specifically, the grammage of the inner surface sheet 14 is preferably 20g/m ² The above is more preferably 40g/m ² The above is more preferably 60g/m ² The above is preferably 150g/m ² Hereinafter, it is more preferably 120g/m ² Hereinafter, it is more preferably 100g/m ² The following is given. Further, the grammage of the outer surface sheet 16 is preferably 30g/m ² The above is more preferably 50g/m ² The above is more preferably 70g/m ² The above, further, is preferably 200g/m ² Hereinafter, more preferably 150g/m ² Hereinafter, it is more preferably 100g/m ² The following is given.

As shown in fig. 4, the mask body 2 is formed into a bag shape having an opening at the face side end 5 by coupling the edges (the closing side end 6, the upper side edge 7, and the lower side edge 8) of the 1 st sheet body 10A and the 2 nd sheet body 10B except for the face side end 5 with the inner surface sheet 14 being inside in a state where the 1 st sheet body 10A and the 2 nd sheet body 10B are folded around the closing side end 6. Specifically, in the mask body 2 of the present embodiment, in a state where the 1 st sheet portion 10A and the 2 nd sheet portion 10B are overlapped with each other, the upper side edge portion 7 of the 1 st sheet portion 10A and the upper side edge portion 7 of the 2 nd sheet portion 10B are sealed by the upper side edge joining portion 20, and the lower side edge portion 8 of the 1 st sheet portion 10A and the lower side edge portion 8 of the 2 nd sheet portion 10B are sealed by the lower side edge joining portion 22.

In addition, the "bonding" in the present specification includes, for example, a configuration in which the 1 st sheet portion 10A and the 2 nd sheet portion 10B are integrally formed from the first, in addition to a configuration in which the 1 st sheet portion 10A and the 2 nd sheet portion 10B are bonded later by any method such as thermal bonding, ultrasonic bonding, high-frequency bonding, and an adhesive. Therefore, for example, the closing-side end portion 6 of the present embodiment is constituted by integrally and continuously connecting the 1 st sheet portion 10A and the 2 nd sheet portion 10B, and thus, the closing is started from the beginning, and in this specification, such a closing state is also included in "coupling".

As shown in fig. 4, the upper side edge joining portion 20 has a linear shape along the upper side edge portion 7, and the lower side edge joining portion 22 has a linear shape along the lower side edge portion 8. Specifically, as shown in fig. 4, the upper side edge joining portion 20 and the lower side edge joining portion 22 are inclined with respect to the horizontal center line 13a so that the distance between the upper side edge joining portion 20 and the lower side edge joining portion 22 gradually narrows from the facing side end portion 5 toward the closing side end portion 6. Further, from the viewpoint of forming the steam generator 1 having excellent fitting properties to the three-dimensional shape of the face by deforming the mask body 2 into a shape along the nose and the jaw, the upper side edge joining portion 20 and the lower side edge joining portion 22 are curved in a shape along the concave portion 12, that is, a concave shape that describes a gentle arc toward the horizontal center line 13a (the inner side of each sheet body portion 10A, 10B).

As shown in fig. 4, the upper side edge joining portion 20 is provided at a predetermined interval from the upper side edge portion 7 toward the horizontal center line 13a, and a dry edge (dry edge) 24 to which no joining process is performed is formed between the upper side edge portion 7 and the upper side edge joining portion 20. In addition, the lower side edge joining portion 22 is similarly provided at a predetermined interval from the lower side edge portion 8 toward the horizontal center line 13a, and a dry edge 24 to which no joining process is performed is formed between the lower side edge portion 8 and the lower side edge joining portion 22. The upper side edge joining portion 20 is provided inside the upper side edge portion 7 with a space of 0.5mm or more and 5.0mm or less, and the lower side edge joining portion 22 is provided inside the lower side edge portion 8 with a space of 0.5mm or more and 5.0mm or less.

The mask body 2 having the above configuration is configured to be deformed from a planar bag shape (see fig. 4) into a three-dimensional cup shape (see fig. 1) by placing a hand in the recess 12 of the upper side edge portion 7 and the recess 12 of the lower side edge portion 8 and pressing the upper side edge portion 7 and the lower side edge portion 8 in a direction to approach each other, and opening the non-joined circular arc-shaped peripheral portions (openings of the attaching surface side end portions 5) of the 1 st sheet portion 10A and the 2 nd sheet portion 10B.

The mask body 2 has rigidity to such an extent that cup-shape (shape retention) can be maintained in a state of being held by a user. As shown in fig. 1, the mask body 2 has a peripheral surface that narrows from the facing side end 5 toward the closing side end 6 in a state where the shape is kept in a cup shape (a state where the opening of the facing side end 5 is open). Further, the peripheral surface of the mask body 2 has a recess 12 recessed toward the inner space 4, and a pair of the recesses 12 are formed at positions (in the present embodiment, the upper side edge 7 and the lower side edge 8) facing each other on the peripheral surface of the mask body 2.

As shown in fig. 5 and 6, the opening of the face-side end 5 of the mask body 2 is sized to cover the mouth and nose of the user.

Specifically, the width W (see fig. 8) of the opening of the attachment side end portion 5 in a cup-like shape of the mask body 2 is preferably 40mm or more, more preferably 60mm or more, still more preferably 80mm or more, and further preferably 170mm or less, more preferably 150mm or less, still more preferably 130mm or less. In this way, the width W of the opening of the facing side end portion 5 is 40mm or more, which has the advantage that it can cover the mouth and nose of the user, and the steam generator 3 is prevented from being too wide in distance from the mouth and nose, thereby producing a moderate temperature sensation and steam amount. Further, the width W of the opening of the facing side end portion 5 is 170mm or less, which has an advantage that the steam generator 3 can be prevented from excessively approaching the mouth and nose, and a moderate temperature sensation and a moderate amount of steam can be generated. Further, the width W of the opening at the surface-side end 5 can be used without any problem even in a configuration in which the size of the opening can be changed as will be described later. As shown in fig. 8, the "width W of the opening of the surface-side end portion 5" refers to the linear distance between the center of the surface-side end portion 5 of the 1 st sheet portion 10A and the center of the surface-side end portion 5 of the 2 nd sheet portion 10B in a cup-like shape.

The height H (see fig. 8) of the opening of the attachment side end portion 5 in the state where the mask body 2 is held in the cup shape is preferably 50mm or more, more preferably 70mm or more, further preferably 90mm or more, further preferably 150mm or less, more preferably 140mm or less, further preferably 130mm or less. In this way, the height H of the opening of the facing side end 5 is 50mm or more, which has the advantage that it can cover the mouth and nose of the user, and the steam generator 3 is prevented from being too wide in distance from the mouth and nose, thereby producing a moderate temperature sensation and steam amount. Further, the height H of the opening of the facing side end 5 is 150mm or less, which has an advantage that the steam generator 3 can be prevented from excessively approaching the mouth and nose, and a moderate temperature sensation and a moderate amount of steam can be generated. Further, the height H of the opening at the surface-side end 5 can be used without any problem even in a structure in which the size of the opening can be changed as will be described later. As shown in fig. 8, the "height H of the opening of the facing side end portion 5" refers to a linear distance between an intersection point of the upper side edge portion 7 and the facing side end portion 5 and an intersection point of the lower side edge portion 8 and the facing side end portion 5 in a state where the shape is kept in a cup shape.

As shown in fig. 5 and 6, the mask body 2 preferably has a volume of 50ml or more and 200ml or less, more preferably 100ml or more and 150ml or less, of the internal space 4 formed between the mask body and the face of the user in a state where the mouth and nose of the user are covered with the opening of the face-side end portion 5. By setting the volume of the internal space 4 to the above-described upper limit value or less, the handleability and appearance can be maintained satisfactorily, and a sufficient feeling of vapor can be imparted. By setting the volume of the internal space 4 to the above lower limit value or more, the breath is facilitated and the vapor and the aroma component can be easily given.

The internal space 4 formed between the mask body 2 and the face of the user is not limited to a closed space formed by the mask body 2 contacting the face of the user, and may have a minute gap between the mask body 2 and the face of the user. The minute gap referred to herein is a gap that may be generated when the steam generator 1 is worn in a usual manner. Since the gap is large enough not to impair the effect of the steam generated by the steam generator 3, even when such a gap is provided, the gap portion can be treated as a portion that is closed along the edge portion of the mask body 2.

[ volumetric measurement of internal space ]

Here, the volume of the internal space 4 can be measured as follows. That is, the use state of the steam generator 1 can be reproduced using a head model molded from the average head data (latest data at the time of application) manufactured by DIGITAL HUMAN TECHNOLOGY inc, and three-dimensional data can be obtained by using a three-dimensional measuring instrument to measure. Further, as shown in japanese patent application laid-open No. 2012-205926, by disposing a liquid impermeable film inside the mask and injecting water into the portion, the same state as when the mask is worn, and then wearing the mask down on the face, the method of measuring the amount of remaining water can also obtain substantially the same value, and therefore, when three-dimensional data is difficult due to the shape of the steam generator 1, the volume of the internal space 4 can also be measured by the method disclosed in japanese patent application laid-open No. 2012-205926.

[ constitution of steam Generator ]

The steam generator 3 is configured to generate heat by reacting with oxygen in the air and generate steam, thereby supplying warm steam to the user. As an embodiment of the steam generator 3, for example, a mixture of powders, a sheet-like shape such as a paper-made sheet, a coated sheet in which a dispersion liquid or the like is coated on a base material, or the like can be used. The steam generator 3 preferably contains an oxidizable metal, a carbon component, and water.

The oxidizable metal is a metal that releases heat of oxidation reaction, and examples thereof include powders or fibers of 1 or 2 or more kinds selected from iron, aluminum, zinc, manganese, magnesium, and calcium. Among them, iron is preferable, and iron powder is particularly preferable, in view of handling property, safety, manufacturing cost, storage property and stability. Examples of the iron powder include reduced iron powder and atomized iron powder. The particle diameter of the particles of the oxidizable metal can be, for example, about 0.1 to 300. Mu.m.

The carbon component has at least 1 function of water-holding capacity, oxygen-supplying capacity and catalytic capacity, and preferably has both of these 3 functions. As the carbon component, for example, 1 or 2 or more kinds selected from activated carbon, acetylene black, and graphite can be used. Among them, activated carbon is more preferably used from the viewpoint of easily adsorbing oxygen during wetting and keeping moisture in the heat generating element constant.

The steam generator 3 further contains a water-retaining material, preferably a material excellent in steam diffusion. As the water-retaining material, superabsorbent polymers (SAP), starch, zeolite, pearlite, vermiculite, and the like can be cited.

The planar shape of the steam generator 3 is not particularly limited, and may be circular, polygonal, or the like. From the viewpoints of production efficiency, ease of processing, and heating and humidifying effects, it is preferably rectangular, substantially square, or other quadrangles, and from the viewpoint of ease of processing, it is more preferably substantially square. The steam generator 3 is preferably provided in 1 or 2 or more steam generators, for example, in a sheet, more preferably in two left and right sheets. The heat generating characteristics of the 2 steam generators may be the same or different, but more preferably the same.

The steam generator 3 may be perfumed with the perfume composition. The perfume composition may be a natural perfume or a synthetic perfume, or may be a mixture of them. Examples of the perfume composition include aroma components such as terpene hydrocarbons, monoterpenols, sesquiterpene alcohols, aromatic alcohols, acetates, carbonyl-group-containing compounds, methyl dihydrojasmonate, and ionone, and compositions containing essential oils. These may be used in combination of 1 or more than 2. The perfume composition may further contain, in addition to the perfume component and the essential oil, a perfume component and a solvent described in "synthetic perfume chemistry and commercial knowledge" (Yin Tengyuan, chemical industry daily necessaries). As the solvent, 1 or 2 or more kinds of dipropylene glycol, ethyldiglycol, 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 kind thereof, the specific use of the steam generator 1, and the like. Although depending on the kind of the perfume composition, as a general range, the content of the perfume composition is preferably 0.5 to 6 parts by mass, more preferably 0.7 to 4.5 parts by mass, relative to 100 parts by mass of the oxidizable metal of the steam generator 3.

As a method for perfuming the steam generator 3, there is a method in which the perfume composition is directly added to the steam generator 3 by spraying or the like when the perfume composition is liquid. Further, there is a method of perfuming the constituent materials (sheet, raw material, etc.) of the steam generator 3, etc., to produce a perfumed sheet, powdered perfume, or pasty perfumed material. When the fragrance composition is solid, there is a method of adding the fragrance composition by adsorbing the fragrance composition to the steam generator 3, or storing the fragrance composition in the steam generator 3, or the like.

Further, the cumulative amount of water vapor generated by each of the vapor generators 3 (hereinafter referred to as "10 minute amount of vapor generated") released 10 minutes from the start of water vapor generation is preferably 250mg or more, more preferably 350mg or more, further preferably 450mg or more, further preferably 1000mg or less, more preferably 850mg or less, further preferably 700mg or less. By setting the amount of steam generated as described above, an appropriate amount of water steam can be supplied for the first 10 minutes when the steam generator 1 is started to be used, and therefore, the effect due to steam can be more effectively imparted.

[ Water vapor production measurement method ]

Here, the 10-minute steam generation amount of the steam generator 3 is a value measured by the following method using the apparatus 30 shown in fig. 7. The apparatus 30 shown in fig. 7 includes a measurement chamber (volume 2.1L) 31 made of aluminum, an inflow path 32 for flowing dehumidified air (humidity less than 2% and flow rate 2.1L/min) into a lower portion of the measurement chamber 31, an outflow path 33 for flowing out air from an upper portion of the measurement chamber 31, an inlet hygrothermograph 34 and an inlet flowmeter 35 provided in the inflow path 32, an outlet hygrothermograph 36 and an outlet flowmeter 37 provided in the outflow path 33, and a thermometer (thermistor) 38 provided in the measurement chamber 31. As the thermometer 38, a thermometer having a temperature resolution of about 0.01 ℃ was used.

The surface temperature of the skin-side surface (inner surface side surface of the mask body 2) of the steam generator 3 was measured by taking out the steam generator 3 from the oxygen barrier bag at a measurement ambient temperature of 30 ℃ (30±1 ℃), placing the skin-side surface of the steam generator 3, i.e., the water vapor release surface, on the measurement chamber 31, and placing a thermometer 38 with a metal ball (4.5 g) thereon. In this state, the dehumidified air flows out from the lower portion, the difference in absolute humidity between the air before and after flowing into the measurement chamber 31 is obtained from the temperature and humidity measured by the inlet hygrothermograph 34 and the outlet hygrothermograph 36, and the amount of water vapor emitted from the vapor generator 3 is calculated from the flow meters measured by the inlet flow meter 35 and the outlet flow meter 37. Then, the total amount of the water vapor amount measured after 10 minutes from the point of time when the vapor generator 3 was taken out from the oxygen barrier bag was taken as the 10-minute vapor generation amount.

[ method of Using steam Generator ]

Next, a method of using the steam generator 1 of the present embodiment will be described.

In the present embodiment, the steam generator 3 is integrated with the mask body 2, and therefore, the steam generator 1 is stored in a state in which the oxygen barrier bag is enclosed in its entirety. In this storage state, the mask body 2 is folded in a bag-like state.

First, when the user uses the steam generator 1, the user opens the oxygen barrier bag and removes the steam generator from the oxygen barrier bag. Thereby, the steam generator 3 comes into contact with air, and the steam generator 3 starts to generate heat by the oxidation reaction of the easily oxidizable metal contained in the steam generator 3.

After the steam generator 1 is taken out of the oxygen barrier bag, as shown in fig. 5, the user places his/her fingers in the concave portion 12 of the upper side edge portion 7 and the concave portion 12 of the lower side edge portion 8 of the mask body 2, and presses the upper side edge portion 7 and the lower side edge portion 8 in a direction approaching each other. Thus, the non-joined circular-arc-shaped peripheral portions (openings of the attaching surface side end portions 5) of the 1 st sheet portion 10A and the 2 nd sheet portion 10B are opened, and the mask body 2 is deformed from a planar bag shape into a three-dimensional cup shape. The user brings the mask body 2 close to the face so as to cover the mouth and nose with the mask body 2 thus deformed into a cup shape. In this case, the face-facing end 5 of the mask body 2 is preferably brought into close contact with the face of the user, but the present invention is not limited thereto, and the mask body 2 may be used in a state where the face-facing end 5 is separated from the face of the user without impairing the steam effect.

Then, when the steam generator 3 generates heat in a state where the mouth and nose are covered with the mask body 2, the water contained in the steam generator 3 is heated by the heat to become water vapor (warm steam) of a predetermined temperature, and the water vapor is released into 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, the steam generator 3 is flavored, and therefore, the fragrance component is inhaled by the user together with the steam. As described above, according to the steam generator 1 of the present embodiment, warm steam and aroma components can be supplied to the user by a simple method.

As described above, the steam generator 1 according to the present embodiment includes: a mask body 2 deformable into a bottomed tubular shape (cup shape) having an opening at a face side end portion 5; and a steam generator 3 capable of generating steam in the internal space 4 of the mask body 2, wherein the mask body 2 in a cup-shaped deformed state has a peripheral surface narrowed from the face-side end 5 toward the closing-side end 6, the peripheral surface has a recess 12 recessed toward the internal space 4, and a pair of recesses 12 are formed at positions opposed to the peripheral surface of the mask body 2.

Further, according to the steam generator 1 having such a configuration, as shown in fig. 6, when the mouth and nose of the user are covered with the opening of the facing side end portion 5, the inner surface side 12b of the concave portion 12 (one concave portion 12) formed in the upper side edge portion 7 is fitted to the nose of the user, and the inner surface side 12b of the concave portion 12 (the other concave portion 12) formed in the lower side edge portion 8 is fitted to the jaw of the user, so that the fitting property with respect to the face of the user can be improved, and the steam generated in the internal space 4 can be prevented from leaking.

As shown in fig. 6, in the steam generator 1 of the present embodiment, when the mouth and nose of the user are covered with the opening of the facing side end portion 5, the outer surface side 12a of the concave portion 12 formed in the upper side edge portion 7 is bonded to the finger (for example, index finger) of the user, and the outer surface side 12a of the concave portion 12 formed in the lower side edge portion 8 is bonded to the other finger (for example, thumb) of the user, so that the grasping performance by the hand in use is also excellent.

Further, by forming the pair of concave portions 12, the steam generator 1 of the present embodiment can reduce the volume of the space formed between the mask body 2 and the face of the user, compared to the case where the pair of concave portions 12 are not formed, and thus can improve the steam effect with respect to the amount of steam. That is, according to the steam generator 1 of the present embodiment, the same steam effect can be obtained with a smaller amount of steam or a more excellent steam effect can be obtained with the same amount of steam, as compared with the case where the pair of concave portions 12 is not formed.

In particular, in the steam generator 1 of the present embodiment, the pair of upper and lower side edge joining portions (the upper side edge joining portion 20 and the lower side edge joining portion 22) at which the 1 st sheet portion 10A and the 2 nd sheet portion 10B are joined are provided inside the upper side edge portion 7 and the lower side edge portion 8 with a spacing of 0.5mm or more and 5.0mm or less, whereby the dry edge 24 is formed between the upper side edge portion 7 and the lower side edge portion 8 and the side edge joining portions 20 and 22. According to the steam generator 1 having such a configuration, flexibility can be imparted to the upper side edge portion 7 and the lower side edge portion 8, and therefore, there is an advantage in that the fingers are less likely to be painful when held by the hand during use.

In the steam generator 1 of the present embodiment, the surface-side end 5 is formed in an arc shape, so that the fitting property to the cheek of the user is also improved, and the fitting property to the face of the user can be further improved, thereby preventing steam generated in the internal space 4 from leaking.

Further, in the steam generator 1 of the present embodiment, the steam generator 3 is disposed in both the 1 st sheet portion 10A and the 2 nd sheet portion 10B, so that the same amount of steam can be inhaled into the left and right nasal cavities. When the steam generation amount of 10 minutes is more than 500mg supplied to the internal space 4 from the steam generator 3 disposed in the 1 st sheet portion 10A and the steam generator 3 disposed in the 2 nd sheet portion 10B, sufficient warm steam is supplied to the throat and nose, and thus the function of the respiratory tract mucosa can be improved, and the cilia exercise can be activated, thereby obtaining an effect of preventing cold, influenza, and the like.

Further, in the steam generator 1 of the present embodiment, the steam generator 3 is flavored, so that, for example, a pleasant fragrance can be added to the steam to improve the relaxing effect.

While the preferred embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the scope described in the above embodiments. Various changes and modifications may be made to the above-described embodiments.

For example, in the above-described embodiment, the steam generator is described as a steam generator that is held by a user's hand (a type of using the mask body 2 held by a hand) without hanging the ear, but the steam generator is not limited thereto, and the steam generator may be used without being held by a hand, for example, by being inserted into the inside of a hanging-type mask.

In the above-described embodiment, the steam generator having the mask body 2 having the opening capable of covering the mouth and nose of the user has been described, but the opening of the mask body 2 is not limited to this, and may be of a size capable of covering at least one of the mouth and nose of the user.

The mask body 2 may be configured to be able to change the size of the opening. As an example of such a configuration for changing the size of the opening, as shown in fig. 9 (a) and 9 (B), a configuration is illustrated in which a part (upper temporary bonding portion 40 and lower temporary bonding portion 42) of the mask body 2A, 2B is broken to enlarge the opening. The upper temporary bonding portion 40 and the lower temporary bonding portion 42 are, for example, portions where the 1 st sheet portion 10A and the 2 nd sheet portion 10B are bonded in a perforated or continuous sealed state, and can be broken by an operation of separating the 1 st sheet portion 10A and the 2 nd sheet portion 10B from each other. The bonding is not limited to a perforated or continuous sealing, and any method may be used as long as the 1 st sheet portion 10A and the 2 nd sheet portion 10B can be bonded to each other at the upper temporary bonding portion 40 and the lower temporary bonding portion 42 and broken as described above. In addition, "coupled" means as described above.

In such a modification, for example, the upper temporary joining portion 40 may be formed to extend along the attachment side end 5 from the intersection point of the upper side edge 7 and the attachment side end 5 as in the mask body 2A shown in fig. 9 (a), or may be formed to extend from the middle portion of the upper side edge 7 to the attachment side end 5 as in the mask body 2B shown in fig. 9 (B). The lower temporary joining portion 42 may be formed to extend along the attachment side end 5 from the intersection point of the lower side edge 8 and the attachment side end 5 as in the mask body 2A shown in fig. 9 (a), or may be formed to extend from the middle portion of the lower side edge 8 toward the attachment side end 5 as in the mask body 2B shown in fig. 9 (B).

According to the mask bodies 2A and 2B of the modified examples, the opening size can be freely changed by disconnecting the upper temporary coupling portion 40 and the lower temporary coupling portion 42, and therefore, the opening size can be adjusted on the user side according to the preference of the user, the age (adult, child), the face size, and the like of the user.

In the above embodiment, the steam generator having the foldable structure of the mask body 2 has been described, but the present invention is not limited to this, and may be shaped in advance.

In the above-described embodiment, the steam generator in which the 1 st sheet portion 10A and the 2 nd sheet portion 10B are formed into a bag shape by folding a sheet-like member integrally continuous with the closing side end portion 6 and joining the upper side edge portion 7 and the lower side edge portion 8 has been described as the mask body 2, but the present invention is not limited thereto. For example, the mask body 2 may be formed into a bag shape by overlapping the 1 st sheet portion 10A and the 2 nd sheet portion 10B separated from each other and joining the closing side end portion 6, the upper side edge portion 7, and the lower side edge portion 8.

In the above embodiment, the steam generator in which 1 concave portion 12 is formed in each of the upper side edge portion 7 and the lower side edge portion 8 has been described, but the present invention is not limited thereto, and the number of concave portions 12 may be arbitrarily changed. In the case where the plurality of concave portions 12 are formed in this way, there is an advantage that the fitting of the fingers when the mask body 2 is held by the plurality of fingers can be improved, and the mask body 2 can be further stably supported.

In the above-described embodiment, the steam generator having the shape of the 1 st sheet portion 10A and the 2 nd sheet portion 10B which are vertically symmetrical has been described, but the present invention is not limited thereto, and may be a vertically asymmetrical shape. For example, the number of the concave portions 12 formed in the upper side edge portion 7 may be different from the number of the concave portions 12 formed in the lower side edge portion 8. As an example of such a modification, there is illustrated a configuration in which 2 concave portions 12A and 12B are formed in the upper side edge portion 7 and 1 concave portion 12 is formed in the lower side edge portion 8, as in the mask body 2C shown in fig. 10. The concave portions 12A, 12B formed in the upper side edge portion 7 have a smaller radius of curvature and a shorter arc length than the concave portion 12 formed in the lower side edge portion 8. According to the mask body 2C, for example, 2 fingers (for example, the index finger and the middle finger or the middle finger and the ring finger) can be placed on the 2 concave portions 12A and 12B formed in the upper side edge portion 7, and the mask body 2C can be held in a state in which 1 finger (for example, the thumb) is placed in the concave portion 12 formed in the lower side edge portion 8, so that there is an advantage that the mask body 2C can be stably supported as compared with a case in which one finger is held up and down.

In the above-described embodiment, the steam generator in which the finger is placed in the recess 12 formed in the upper side edge 7 and the lower side edge 8 has been described, but the steam generator is not limited thereto, and may be configured such that the finger is inserted into the through hole 54 or the slit 56 formed near the recess 12, for example, as shown in fig. 11 and 12. As such a modification, for example, as in the mask body 2D shown in fig. 11, there is illustrated a configuration in which the mask body 2D has the surplus portions Bai Bu, 52 (specifically, the surplus portions Bai Bu, 52 extending in a flange shape from the upper side edge portion 7 and the lower side edge portion 8), and the through holes 54 each having a size capable of allowing the fingers of the user to be inserted are formed at the positions of the surplus portions Bai Bu, 52 close to the recessed portion 12. Instead of the through hole 54, for example, a slit 56 through which a finger can be inserted may be formed as in the mask body 2E shown in fig. 12. Further, in fig. 11 and 12, one through hole 54 or slit 56 is provided at each of the upper side edge portion 7 and the lower side edge portion 8, but the number thereof is not limited. For example, two upper side edge portions 7 may be provided, and one lower side edge portion 8 may be provided. In this case, the mask bodies 2D and 2E can be stably supported as compared with the case where the upper and lower sides are held by one finger. Such mask bodies 2D and 2E have an advantage that they are less prone to fatigue even when held for a long time.

In the above embodiment, the steam generator in which the surface-side end portions 5 of the 1 st sheet portion 10A and the 2 nd sheet portion 10B are formed in the arc shape has been described, but the present invention is not limited thereto, and any shape such as a straight shape may be adopted.

In the above-described embodiment, the steam generator has been described as being provided with the arcuate facing side arcuate portions 7a and 8a and the closing side arcuate portions 7B and 8B facing the outside of the respective sheet portions 10A and 10B so as to sandwich the concave portion 12, but the steam generator is not limited thereto, and may be configured such that both sides of the concave portion 12 are formed in a straight line, for example.

In the above embodiment, the steam generator having the dry edges formed on the upper side edge portion 7 and the lower side edge portion 8 of the 1 st sheet portion 10A and the 2 nd sheet portion 10B has been described, but the present invention is not limited thereto, and a configuration may be adopted in which no dry edge is formed.

In the above-described embodiment, the steam generator in which the 1 st sheet portion 10A and the 2 nd sheet portion 10B are each provided with one steam generator 3 has been described, but the present invention is not limited thereto, and for example, a configuration may be adopted in which the 1 st sheet portion 10A and the 2 nd sheet portion 10B are each provided with a plurality of steam generators 3, or a configuration may be adopted in which only either the 1 st sheet portion 10A or the 2 nd sheet portion 10B is provided with a steam generator 3. The structure in which the steam generator 3 is enclosed in the 1 st sheet portion 10A and the 2 nd sheet portion 10B is not limited to the structure in which a pocket-like housing portion is provided on the inner surface of the mask body 2, and the steam generator 3 may be attached to or detached from the housing portion, or the structure in which the steam generator 3 is fixed to the inner surface of the mask body 2 by a fixing means such as an adhesive. Further, in the type in which the steam generator 3 is added to the mask body 2 in this way, the mask body may be stored in a state in which only the steam generator 3 is enclosed in the oxygen barrier bag. When a plurality of steam generators 3 are provided, the respective steam characteristics and shapes may be the same or different, but from the viewpoint of uniformly supplying steam and aroma to the user, it is preferable that the steam generators have the same shape and the same steam characteristics.

In the above embodiment, the steam generator to which the steam generator 3 is perfumed has been described, but the present invention is not limited to this, and a steam generator to which no fragrance is added may be used.

The modifications described above are obviously included in the scope of the present invention according to the description of the claims.

With respect to the above embodiments, the present invention further discloses the following steam generator.

<1>

A steam generator is provided with: a mask body having a bottomed tubular shape with an opening at an end portion on a face side; and a steam generator capable of generating steam in the internal space of the mask body,

the mask body has a peripheral surface which narrows from the facing side end toward a closing side end located on the opposite side of the facing side end,

the peripheral surface of the mask body is provided with a concave part which is concave towards the inner space,

the mask body has a pair of concave portions formed at opposite positions on a peripheral surface thereof.

<2>

The steam generator according to <1>, wherein the mask body includes a 1 st sheet portion forming a half of the mask body and a 2 nd sheet portion forming the remaining half of the mask body,

the 1 st sheet part and the 2 nd sheet part are formed in a bag shape with the edge parts other than the surface side end part being mutually combined, and are configured to be deformable into the bottomed cylinder shape by opening the opening of the surface side end part,

The 1 st sheet portion and the 2 nd sheet portion have the recessed portions at a pair of side edge portions from the facing side end portion to the closing side end portion.

<3>

The steam generator according to <2> above, wherein side edge joining portions for joining the 1 st sheet portion and the 2 nd sheet portion to each other are provided at the pair of side edge portions, respectively, and each side edge joining portion has a shape along the recessed portion.

<4>

The steam generator according to <3> above, wherein each side edge joining portion is provided inside at a distance of 0.5mm or more and 5.0mm or less from the side edge portion, and a dry edge is formed between the side edge portion and the side edge joining portion.

<5>

The steam generator according to any one of <2> to <4>, wherein the 1 st sheet portion and the 2 nd sheet portion are formed in an arc shape with the facing side end portion.

<6>

The steam generator according to the above item <5>, wherein the facing side end portion preferably has a radius of curvature of 75mm or more and 200mm or less, more preferably 80mm or more and 120mm or less, and still more preferably 85mm or more and 100mm or less.

<7>

The steam generator according to the above item <5> or <6>, wherein the facing side end portion preferably has an arc length of 160mm or more and 220mm or less, more preferably 170mm or more and 210mm or less, and still more preferably 180mm or more and 200mm or less.

<8>

The steam generator according to any one of <2> to <7>, wherein the steam generator is disposed at both the 1 st sheet portion and the 2 nd sheet portion with the closed end portion as a boundary.

<9>

The steam generator according to <8>, wherein the distance between the end of the steam generator on the side of the end on the side of the closed side and the end on the side of the closed side is preferably 15mm or less, more preferably 12mm or less, and the shortest distance is preferably 5mm or more, more preferably 7mm or more.

<10>

The steam generator according to <8> or <9>, wherein the distance between the end on the surface side end side and the surface side end of the steam generator is preferably 15mm or more, more preferably 20mm or more, and the shortest distance is preferably 30mm or less, more preferably 25mm or less.

<11>

The steam generator according to any one of <1> to <10>, wherein the steam generator has a 10-minute steam generation amount of 250mg or more.

<12>

The steam generator of <11>, wherein the steam generator preferably has a steam generation amount of 350mg or more, more preferably 450mg or more, still more preferably 1000mg or less, still more preferably 850mg or less, and still more preferably 700mg or less for 10 minutes.

<13>

The steam generator according to any one of <1> to <12>, wherein the steam generator is sandwiched between 2 or more nonwoven fabrics.

<14>

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

<15>

The steam generator according to any one of <1> to <14>, wherein the mask body is capable of covering the mouth and nose of a user.

<16>

The steam generator according to <15> above, wherein the mask body preferably has a volume of 50ml or more and 200ml or less, more preferably 100ml or more and 150ml or less in an internal space formed between the mask body and the face of the user in a state where the mouth and the nose of the user are covered with the opening of the face-side end portion.

<17>

The steam generator according to <15> or <16>, wherein the mask body is configured such that, when the mouth and nose of the user are covered with the opening at the end on the facing side, the inner surface side of one of the concave portions is fitted to the nose of the user, and the inner surface side of the other concave portion is fitted to the jaw of the user.

<18>

The steam generator according to any one of the above items <1> to <17>, wherein the width of the opening of the front end of the mask body in a state in which the opening of the front end is opened is preferably 40mm or more, more preferably 60mm or more, still more preferably 80mm or more, still more preferably 170mm or less, still more preferably 150mm or less, still more preferably 130mm or less.

<19>

The steam generator according to any one of the above items <1> to <18>, wherein the opening of the mask body is preferably 50mm or more, more preferably 70mm or more, still more preferably 90mm or more, and further preferably 150mm or less, more preferably 140mm or less, still more preferably 130mm or less in a state in which the opening of the mask body is open.

<20>

The steam generator according to any one of <1> to <19>, wherein the recessed portion has a concave shape facing the facing side end portion side.

<21>

The steam generator according to any one of the above items <1> to <20>, wherein the concave portion preferably has a radius of curvature of 10mm or more and 50mm or less, more preferably 20mm or more and 40mm or less, and still more preferably 25mm or more and 35mm or less, in the top of the head.

<22>

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

<23>

The steam generator according to any one of <1> to <22>, wherein the mask body includes an inner surface sheet forming an inner surface and an outer surface sheet forming an outer surface,

The grammage of the inner surface sheet is preferably 20g/m ² The above is more preferably 40g/m ² The above is more preferably 60g/m ² The above is preferably 150g/m ² Hereinafter, it is more preferably 120g/m ² Hereinafter, it is more preferably 100g/m ² In the following the procedure is described,

the grammage of the outer surface sheet 16 is preferably 30g/m ² The above is more preferably 50g/m ² The above is more preferably 70g/m ² The above, further, is preferably 200g/m ² Hereinafter, more preferably 150g/m ² Hereinafter, the process will be further describedPreferably 100g/m ² The following is given.

<24>

The steam generator according to any one of <1> to <23>, wherein the mask body is configured to be capable of changing a size of the opening.

<25>

The steam generator according to <24>, wherein the mask body is configured such that the size of the opening can be changed by breaking a part of the mask body.

<26>

The steam generator according to any one of <1> to <25>, wherein the recessed portions are formed in an upper side edge portion and a lower side edge portion of the mask body, respectively,

at least one of the recess formed in the upper side edge portion and the recess formed in the lower side edge portion is formed in plurality.

<27>

The steam generator according to <26> above, wherein 2 concave portions are formed in the upper side edge portion and 1 concave portion is formed in the lower side edge portion.

<28>

The steam generator according to <27> above, wherein the concave portion formed in the upper side edge portion has a smaller radius of curvature and a shorter arc length than the concave portion formed in the lower side edge portion.

<29>

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

<30>

The steam generator according to any one of <1> to <29>, wherein the steam generator is a steam generator which is not provided with a hanging tab and is held by a user.

Description of symbols

1: steam generator

2: mask main body

3: steam generator

4: interior space

5: facing side end

6: end at closing side

7: upper side edge portion

8: lower side edge part

10A: sheet 1

10B: sheet part 2

12: recess portion

14: inner surface sheet

16: outer surface sheet

20: upper side edge joint (side edge joint)

22: lower side edge joint (side edge joint)

24: dry edge

Claims

1. A steam generator, wherein,

the steam generator is provided with: a mask body having a bottomed tubular shape with an opening at an end portion on a face side; and a steam generator capable of generating steam in the internal space of the mask body,

a pair of concave parts are formed at opposite positions of the peripheral surface of the mask body,

the concave part has a radius of curvature of 10mm or more and 50mm or less at the top of the head, has a circular arc length of 20mm or more and 60mm or less, and when the mask body covers the mouth and nose of the user with the opening at the end of the facing side, the inner surface side of one concave part is bonded to the nose of the user, the outer surface side is bonded to the fingers of the user, the inner surface side of the other concave part is bonded to the jaw of the user, the outer surface side is bonded to the other fingers of the user,

is a steam generator which is not provided with hanging lugs and is held by a user.

2. The steam generator of claim 1, wherein,

the mask body comprises a 1 st sheet part forming a half peripheral surface of the mask body and a 2 nd sheet part forming the rest half peripheral surface,

3. The steam generator of claim 2, wherein,

a side edge joining portion for joining the 1 st sheet portion and the 2 nd sheet portion to each other is provided at each of the pair of side edges,

each side edge joint has a shape along the recess.

4. The steam generator of claim 3, wherein,

each side edge joint part is arranged at an interval of 0.5mm to 5.0mm relative to the side edge part,

a dry edge is formed between the side edge portion and the side edge joining portion.

5. The steam generator according to claim 2 to 4, wherein,

the 1 st sheet portion and the 2 nd sheet portion are formed with the facing side end portion in an arc shape.

6. The steam generator of claim 5, wherein,

the facing side end has a radius of curvature of 75mm or more and 200mm or less.

7. The steam generator of claim 5, wherein,

the facing side end has a radius of curvature of 80mm or more and 120mm or less.

8. The steam generator of claim 5, wherein,

The facing side end has a radius of curvature of 85mm or more and 100mm or less.

9. The steam generator of claim 5, wherein,

the facing side end has an arc length of 160mm to 220 mm.

10. The steam generator of claim 5, wherein,

the facing side end has an arc length of 170mm to 210 mm.

11. The steam generator of claim 5, wherein,

the facing side end portion has an arc length of 180mm to 200 mm.

12. The steam generator according to claim 2 to 4, wherein,

the steam generator is disposed at both the 1 st sheet portion and the 2 nd sheet portion with the closed side end portion as a boundary.

13. The steam generator of claim 12, wherein,

in the steam generator, a distance between the end of the steam generator on the closing side end side and the closing side end is 15mm or less, and the distance is 5mm or more.

14. The steam generator of claim 12, wherein,

in the steam generator, a distance between the end of the steam generator on the closing side end side and the closing side end is set to 12mm or less, and the distance is set to 7mm or more.

15. The steam generator of claim 12, wherein,

in the steam generator, a distance between the end of the steam generator on the surface side end side and the surface side end is 15mm or more, and the distance is 30mm or less.

16. The steam generator of claim 12, wherein,

in the steam generator, a distance between the end of the steam generator on the surface side end side and the surface side end is 20mm or more, and the distance is 25mm or less.

17. The steam generator according to claim 1 to 4, wherein,

the steam generator has a 10-minute steam generation amount of 250mg or more.

18. The steam generator of claim 17, wherein,

the steam generator has a steam generation amount of 350mg or more and 1000mg or less for 10 minutes.

19. The steam generator of claim 17, wherein,

the steam generator has a steam generation amount of 450mg or more and 850mg or less for 10 minutes.

20. The steam generator of claim 17, wherein,

the steam generator has a steam generation amount of 450mg or more and 700mg or less for 10 minutes.

21. The steam generator according to claim 1 to 4, wherein,

the steam generator is clamped by more than two non-woven fabrics.

22. The steam generator according to claim 1 to 4, wherein,

the steam generator is perfumed.

23. The steam generator according to claim 1 to 4, wherein,

the mask body has a volume of an internal space formed between the mask body and a face of a user in a state where the mouth and nose of the user are covered with the opening at the end of the face-contacting side of the mask body, the internal space being 50ml or more and 200ml or less.

24. The steam generator according to claim 1 to 4, wherein,

the mask body has a volume of an internal space formed between the mask body and a face of a user in a state where the mouth and nose of the user are covered with the opening at the end of the face-contacting side of the mask body of 100ml or more and 150ml or less.

25. The steam generator according to claim 1 to 4, wherein,

the width of the opening of the face side end of the mask body in a state in which the opening of the face side end is open is 40mm or more and 170mm or less.

26. The steam generator according to claim 1 to 4, wherein,

The width of the opening of the face side end of the mask body in a state in which the opening of the face side end is open is 60mm or more and 150mm or less.

27. The steam generator according to claim 1 to 4, wherein,

the width of the opening of the face side end of the mask body in a state in which the opening of the face side end is opened is 80mm or more and 130mm or less.

28. The steam generator according to claim 1 to 4, wherein,

the mask body has an opening at the surface side end in a state where the opening is open, and the height of the opening at the surface side end is 50mm or more and 150mm or less.

29. The steam generator according to claim 1 to 4, wherein,

the height of the opening of the face side end of the mask body in a state in which the opening of the face side end is open is 70mm or more and 140mm or less.

30. The steam generator according to claim 1 to 4, wherein,

the height of the opening of the face side end of the mask body in a state in which the opening of the face side end is open is 90mm or more and 130mm or less.

31. The steam generator according to claim 1 to 4, wherein,

the recessed portion is recessed toward the facing side end portion side.

32. The steam generator according to claim 1 to 4, wherein,

the concave portion has a radius of curvature of 20mm or more and 40mm or less at the top of the head.

33. The steam generator according to claim 1 to 4, wherein,

the concave portion has a radius of curvature of 25mm or more and 35mm or less at the top of the head.

34. The steam generator according to claim 1 to 4, wherein,

the concave portion has an arc length of 30mm or more and 50mm or less at the head top.

35. The steam generator according to claim 1 to 4, wherein,

the concave portion has an arc length of 35mm to 45mm at the head top.

36. The steam generator according to claim 1 to 4, wherein,

the mask body includes an inner surface sheet forming an inner surface and an outer surface sheet forming an outer surface,

the gram weight of the inner surface sheet is 20g/m ² Above, further, 150g/m ² In the following the procedure is described,

the gram weight of the outer surface sheet is 30g/m ² The above, further, 200g/m ² The following is given.

37. The steam generator according to claim 1 to 4, wherein,

the gram weight of the inner surface sheet is 40g/m ² Above, furthermore, 120g/m ² In the following the procedure is described,

the gram weight of the outer surface sheet is 50g/m ² Above, further, 150g/m ² The following is given.

38. The steam generator according to claim 1 to 4, wherein,

the gram weight of the inner surface sheet is 60g/m ² The above, furthermore, is 100g/m ² In the following the procedure is described,

the gram weight of the outer surface sheet is 70g/m ² The above, furthermore, is 100g/m ² The following is given.

39. The steam generator according to claim 1 to 4, wherein,

the mask body is configured to be capable of changing the size of the opening.

40. The steam generator of claim 39, wherein,

the mask body is configured such that the size of the opening can be changed by breaking a part of the mask body.

41. The steam generator according to claim 1 to 4, wherein,

the concave parts are respectively formed at the upper side edge part and the lower side edge part of the mask main body,

42. The steam generator of claim 41, wherein,

2 concave parts are formed on the upper side edge part,

the lower side edge portion is formed with 1 concave portion.

43. The steam generator of claim 42, wherein,

the concave portion formed at the upper side edge portion has a smaller radius of curvature and a shorter arc length than the concave portion formed at the lower side edge portion.

44. The steam generator according to claim 1 to 4, wherein,

the mask body has a margin Bai Bu extending from the peripheral surface of the mask body, and a through hole or slit through which a user's finger can be inserted is formed in a position of the margin portion close to the recessed portion.