WO2022118501A1

WO2022118501A1 - Steam generator

Info

Publication number: WO2022118501A1
Application number: PCT/JP2021/029918
Authority: WO
Inventors: 亜沙美三代; 圭二吉井
Original assignee: 花王株式会社
Priority date: 2020-12-04
Filing date: 2021-08-16
Publication date: 2022-06-09
Also published as: TW202222354A

Abstract

This steam generator comprises a bottomed cylindrical mask main body having an opening on a face contact side end part, and one or more steam generation bodies capable of generating steam within the internal space of the mask main body. The mask main body has a peripheral surface extending from the face contact side end part towards a closed side end part located on the opposite side to the face contact side end part such that an internal space is formed between the mask main body and the face of a wearer. The peripheral length of the opening of the face contact side end part of the mask main body is between 450 mm and 700 mm, inclusive.

Description

Steam generator

The present invention relates to a steam generator.

Conventionally, various face masks that cover the entire face, eye masks that cover the eyes, etc. have been proposed for the purpose of beauty such as solving skin troubles and for obtaining a relaxing effect. For example, Japanese Patent Application Laid-Open No. 2011-136072 discloses a cosmetic face mask that is impregnated with a cosmetic such as a beauty essence and is brought into close contact with the face to moisturize the skin. Further, Japanese Patent Application Laid-Open No. 2019-155055 discloses an eye mask type steam generator capable of obtaining a relaxing effect by hot steam.

The present invention comprises a bottomed tubular mask body having an opening at the end on the face-contact side, and one or more steam generators capable of generating steam in the internal space of the mask body. The mask body is from the face-contacting end to the obstructed end located on the opposite side of the face-contacting end so that the internal space is formed between the mask body and the wearer's face. The present invention relates to a steam generator having a peripheral surface extending toward the mask and having a peripheral length of an opening at the end of the face-contacting side of the mask body of 450 mm or more and 700 mm or less.

It is a figure which shows the steam generator which concerns on one Embodiment of this invention. It is a figure which shows the folded state of the steam generator which concerns on this embodiment. It is the figure which looked at the steam generator in the state which the face-contact side end part was expanded from the face-contact side end part side. It is the figure which looked at the steam generator in the state which the end part on the face contact side was expanded from the eyebrow side. It is a figure which shows the state which the steam generator which concerns on this embodiment is attached to the human head model for volume measurement. It is a figure which shows the state which the holding part is folded. It is a figure which shows schematic cross section of a steam generator. It is a plan view which shows the steam generator. 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 at the time of tension of the holding part. It is a figure which shows the state at the time of mounting a holding part. It is a figure which shows the steam generator which concerns on the 1st modification. It is a figure which shows the steam generator which concerns on the 2nd modification. It is a figure which shows the steam generator which concerns on the 3rd modification. It is a figure which shows the steam generator which concerns on the 4th modification. It is a figure which shows the steam generator which concerns on 5th modification.

Detailed description of the invention

Since the cosmetic face mask of Japanese Patent Application Laid-Open No. 2011-136072 moisturizes the skin with a pre-impregnated cosmetic, a sufficient amount of impregnated cosmetic can be used to obtain sufficient satisfaction. On the contrary, if the amount of impregnated cosmetic is large, dripping may occur.

On the other hand, the eye mask of Japanese Patent Application Laid-Open No. 2019-155055 uses the heat of reaction generated by the oxidation reaction of the metal to be oxidized to generate hot steam, so that problems such as dripping do not occur. Although it is possible to supply a large amount of hot steam to the eyes, it is difficult to supply the hot steam to the entire face because the shape is specialized for wearing on the user's eyes.

Therefore, the present invention relates to a steam generator capable of supplying a large amount of steam to the entire face.

That is, the present invention includes a bottomed tubular mask body having an opening at the end on the face contact side, and one or two or more steam generators capable of generating steam in the internal space of the mask body. The mask body is a generator, and the mask main body is a closed side end located on the opposite side of the face-contact side end portion from the face-contact side end portion so that the internal space is formed between the mask body and the wearer's face. The present invention relates to a steam generator having a peripheral surface extending toward a portion and having a peripheral length of an opening of the face-contacting end portion of the mask body of 450 mm or more and 700 mm or less.

According to the steam generator according to the present invention, it is possible to supply a large amount of steam to the entire face.

Hereinafter, suitable 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. .. Further, the drawings are schematic views in which emphasis, omission, and ratio adjustment are appropriately performed to show the present invention, and may differ from the actual shape, positional relationship, and ratio.

[Overall configuration of steam generator]
The steam generator 1 according to the present embodiment is a face mask type steam generator capable of covering the entire face of the wearer, and as shown in FIG. 1, one end (face contact side end 5). ), A bottomed tubular mask body 2 and one or more steam generators 20 capable of generating steam in the internal space 4 of the mask body 2 are provided. Further, the steam generator 1 according to the present embodiment further includes one or more holding portions 30 for holding the mask main body 2 in front of the wearer's face.

In the present specification, "covering the entire face" means covering at least the area from the upper eyelid to the lower lip in the vertical direction and at least the area between the left and right cheeks in the width direction.

Further, in the present specification, the "bottomed tubular shape" means a cylindrical shape in which one end is open and the other end is closed, and the shape of the body thereof is cylindrical. It is not limited, and includes, for example, a square cylinder shape. Hereinafter, the shape of the folded state in which the first panel portion 10A and the second panel portion 10B, which will be described later, are overlapped with each other, is referred to as a “bag shape”, and the opening of the face-contact side end portion 5, which will be described later, is widened to form a bottomed cylinder. The shape that is kept in a shape is called a "bottomed cylinder" or a "three-dimensional shape".

Further, hereinafter, the end portion of the mask body 2 formed in the shape of a bottomed cylinder on the open side (the side in contact with the face) is referred to as "face contact side end portion 5" and is located on the opposite side of the face contact side end portion 5. The end on the closed side (bottom side) is referred to as "closed end 6". Further, the upper side of 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 when viewed from a plane direction (that is, the state of FIG. 2) is "eyebrows". The lower side in the same state is called the "jaw side". Here, the "eyebrow side" is the side arranged on the eyebrow side when worn, and the "jaw side" is the side arranged on the jaw side in the same state. However, the mask body 2 according to the present embodiment can be mounted upside down.

Further, in the present specification, the "width direction" means the face-contact side end of the second panel portion 10B described later via the closed-side end portion 6 from the face-contact side end portion 5 of the first panel portion 10A described later. The direction leading to the portion 5 is referred to, and "both ends in the width direction of the mask body" means the face-contact side end portion 5 of the first panel portion 10A and the face-contact side end portion 5 of the second panel portion 10B.

[Mask body configuration]
As shown in FIG. 1, the mask main body 2 has a peripheral surface extending from the face-contact side end portion 5 toward the closed-side end portion 6, and the peripheral surface allows the mask body 2 to be in contact with the wearer's face when worn. The internal space 4 is configured to be formed between them. That is, when the mask body 2 is worn, the peripheral surface of the face-contact side end portion 5 and its vicinity is in contact with the wearer's face (skin), while the other regions of the peripheral surface and the closed-side end portion 6 are in contact with each other. It is configured to form an internal space 4 that is separated from the wearer's face (skin) and can be filled with steam generated from the steam generator 20.

Specifically, 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. The first panel portion 10A and the second panel portion 10B are each made of sheet-like members having the same shape and size, and as shown in FIG. 2, the edges excluding the face-contact side end portion 5 and the breathing hole 6d described later are mutually. By being combined, it is formed in a bag shape.

The means for connecting the first panel portion 10A and the second panel portion 10B is not particularly limited as long as it is a means that can be bonded so that the two

panel portions

10A and 10B are not separated. For example, crimping, thermowelding, ultrasonic welding, high frequency. Any means such as welding and adhesive can be adopted. Further, in the illustrated example, each joint portion has a configuration (striped pattern) arranged so as to form a stripe pattern in the formation region, but the present invention is not limited to this, and for example, the entire surface of the formation region is crimped. It is possible to adopt various configurations such as (continuous seal shape). In addition, instead of the configuration in which the first panel portion 10A and the second panel portion 10B formed as separate bodies are mechanically coupled, for example, the first panel portion 10A and the second panel portion 10B are integrally formed from the beginning. It may be configured.

Further, as shown in FIG. 3, the first panel portion 10A and the second panel portion 10B are configured to be deformable into a bottomed cylinder shape by widening the opening of the face contact side end portion 5. That is, the first panel portion 10A and the second panel portion 10B are curved in a circular curved surface shape so as to be convex in the direction away from each other by widening the opening of the face contact side end portion 5, and the closed side end portion. It is configured to be deformed into a shape in which 6 is a bottom portion and the face-contact side end portion 5 is an open end portion. By deforming the first panel portion 10A and the second panel portion 10B in this way, in the mask main body 2, the expanded face-contact side end portion 5 faces the face side, and the closed closed-side end portion 6 becomes. It is in a state facing the opposite side of the face, that is, a bottomed cylinder with a sideways opening. The mask main body 2 has a vertical center line extending in a direction orthogonal to the width direction at the center portion in the width direction in a state of being held in a bottomed cylindrical shape, and has a width with the vertical center line as a boundary. One side in the direction constitutes the first panel portion 10A, and the other side in the width direction constitutes the second panel portion 10B. That is, the first panel portion 10A forms half of the peripheral surface (either the left or right half peripheral surface) from the face contact side end portion 5 to the closed side end portion 6, and the second panel portion 10B forms the face contact side end. It forms the rest of the peripheral surface (the remaining half peripheral surface) from the portion 5 to the closed end portion 6.

As shown in FIGS. 1 and 3, the mask main body 2 according to the present embodiment is in a state of being held in a bottomed tubular shape, and is linearly closed from the expanded annular facial contact side end portion 5. It has a tapered shape that converges toward the end portion 6, and the closed side end portion 6 constitutes the vertical center line. However, the present invention is not limited to this, and the closed side end portion 6 may have a flat bottom portion.

As shown in FIG. 3, the face-contacting end portion 5 of the mask body 2 forms an opening having a size capable of covering the entire face of the wearer in a state of being kept in a bottomed tubular shape. It is configured. Specifically, the peripheral length of the opening of the face-contact side end portion 5 of the mask body 2 is preferably 450 mm or more, more preferably 460 mm or more, and 480 mm from the viewpoint of covering the entire face of the wearer. It is more preferably more than that, and even more preferably 500 mm or more. Further, the peripheral length of the opening of the face contact side end portion 5 of the mask body 2 is preferably 700 mm or less, preferably 670 mm or less, from the viewpoint of suppressing a gap with the wearer's face and suppressing steam leakage. Is more preferable, 630 mm or less is further preferable, and 600 mm or less is further preferable. Here, the "perimeter of the opening of the face-contacting side end portion 5" means the total length of the opening edges of the face-contacting side end portion 5, and in the present embodiment, the face-contacting of the first panel portion 10A. The length of the eyebrow side edge 5a, the jaw side edge 5b and the holding portion joint 5c described later of the side end portion 5, and the eyebrow side edge portion 5a and the jaw described later of the face contact side end portion 5 of the second panel portion 10B. It means the total value of the lengths of the side edge portion 5b and the holding portion joint portion 5c.

Further, in the mask body 2, the apex on the eyebrow side of the face-contact side end 5 is located on the eyebrows, preferably on the forehead (between the eyebrows and the hairline), and the chin-side apex of the face-contact side end 5 is the mouth. It preferably has a length L in the vertical direction that can be located below, preferably below the chin (between the chin and neck). From this point of view, as shown in FIG. 2, the mask main body 2 is in a state where the first panel portion 10A and the second panel portion 10B are folded in half along the vertical center line (closed side end portion 6). The vertical length L from the brow-side apex to the chin-side apex of the face-contact side end portion 5 is preferably 150 mm or more from the viewpoint of being able to cover the wearer's eyebrows and the mouth. It is more preferably 180 mm or more, further preferably 200 mm or more, and even more preferably 230 mm or more. Further, it is preferable that the length L in the vertical direction is set within the range of the size of the wearer's face so as not to generate a large gap between the face and the heating device when worn. From this point of view, it is preferably 300 mm or less, more preferably 285 mm or less, further preferably 270 mm or less, and even more preferably 260 mm or less. Here, the "maximum on the eyebrow side of the face-contacting end portion 5" means the eyebrow-side edge portion 5a described later of the face-contacting side end portion 5 and the closed-side end portion 6 (the eyebrow-side coupling described later in the present embodiment). The intersection IPt with the portion 6a), and the "jaw-side apex of the face-contacting end portion 5" refers to the jaw-side edge portion 5b described later of the face-contacting side end portion 5 and the obstruction-side end portion 6 (this implementation). In the form, it refers to the intersection IPb with the jaw-side joint portion 6b) described later. Further, the "length L in the vertical direction" is the "face contact side end portion" in a state where the first panel portion 10A and the second panel portion 10B are folded in half along the vertical center line (closed side end portion 6). It refers to the length of the straight line distance connecting "the apex on the brow side of 5" and "the apex on the jaw side of the end portion 5 on the face contact side". As shown in FIG. 2, when the joint portion (seal portion) is formed at the closed side end portion 6 (eyebrow side joint portion 6a and jaw side joint portion 6b), the “vertical length L” is , That is, the dimension including the joint portion (seal portion), that is, the outer dimension between the outer surface side end portion of the eyebrow side joint portion 6a and the outer surface side end portion of the jaw side joint portion 6b.

Further, it is preferable that the mask body 2 has a depth D capable of forming a sufficient internal space 4 between the mask body 2 and the wearer's face and spreading the thermal steam evenly over the entire face. As shown in FIG. 2, the mask body 2 has a depth D along the width direction from the face-contact side end portion 5 to the obstruction-side end portion 6 of 80 mm or more from the viewpoint of forming a sufficient internal space 4. It is preferably 90 mm or more, more preferably 100 mm or more, still more preferably 110 mm or more. Further, the depth D is preferably 150 mm or less, more preferably 140 mm or less, and more preferably 130 mm or less, from the viewpoint of making the weight of the mask body 2 appropriate and suppressing the slipping off of the wearer's face. It is even more preferable that it is present, and it is even more preferable that it is 120 mm or less. Here, "depth D" refers to a straight line distance extending horizontally (in the width direction orthogonal to the vertical direction) from the most expanded point (expansion point) Pmax of the closed side end portion 6 to the face contact side end portion 5. ..

Further, in the mask body 2, the surface area of the inner surface (hereinafter referred to as “back surface area”) in the state of being kept in a bottomed tubular shape forms a sufficient internal space 4 with the wearer's face, and the face is formed. From the viewpoint of spreading the hot steam evenly over the whole, it is preferably 300 cm ² or more, and more preferably 350 cm ² or more. Further, the surface area of the back surface is preferably 600 cm ² or less, and more preferably 550 cm ² or less, from the viewpoint of suppressing a gap with the wearer's face and suppressing vapor leakage.

In particular, the mask body 2 having the shape shown in FIG. 1 (that is, both the eyebrow side joint portion 6a and the jaw side joint portion 6b extend along the width direction, the main joint portion 6c is formed in an arc shape, and In the case of the mask body 2) having a vertically asymmetrical shape, the back surface area is preferably 500 cm ² or more and 600 cm ² or less. Further, the mask body 2 having the shape (dome shape) shown in FIG. 15 (that is, neither the buccal side joint portion 6a nor the jaw side joint portion 6b extends along the width direction, and the main joint portion 6c has an arc shape. In the case of the mask body 2) which is formed in a dome and has a vertically symmetrical shape, the surface area of the back surface is preferably 300 cm ² or more and 400 cm ² or less.

Here, the back surface area is measured by measuring the weight (g) of the sheet (that is, the inner surface sheet 14) forming the inner surface in a state of being held in a bottomed tubular shape, and the measured weight (g) and the said. It is possible to calculate based on a predetermined surface area (g / m ² ) of the inner surface sheet 14.

Further, as shown in FIG. 5, the mask main body 2 is maintained in a bottomed cylindrical shape, and the volume of the internal space 4 in a state of being attached to the human head model HM for volume measurement maintains good handleability and appearance. However, from the viewpoint of spreading the hot steam evenly over the entire face, it is preferably 150 cm ³ or more, more preferably 180 cm ³ or more, further preferably 220 cm ³ or more, and 250 cm ³ or more. Is even more preferable. Further, the volume of the internal space 4 in the same state is preferably 400 cm ^{3 or less, more preferably 370 cm 3} ^or less, from the viewpoint of facilitating breathing and maintaining good handleability and appearance. It is more preferably 330 cm ³ or less, and even more preferably 300 cm ³ or less.

The internal space 4 formed between the face of the human head model HM for volume measurement is not limited to the closed space formed by the mask body 2 in contact with the face of the human head model HM for volume measurement. It may have a slight gap between the main body 2 and the face of the human head model HM for volume measurement. The slight gap 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 20, so that the gap is also closed along the edge of the mask body 2. It is possible to treat it as if it were.

Here, the "human head model for volume measurement HM" is a female version of the human head model modeled based on the female version average head data (latest data as of September 10, 2020) manufactured by Digital Human Technology Co., Ltd. (Width 151.24 mm, depth 206.82 mm, height 233.01 mm) can be used. Further, when measuring the volume of the internal space 4, the "state in which the shape is retained in a bottomed cylinder shape" is defined as the steam generator 1 in the volume measuring human head model HM (for example, the female version human head model described above). It means a three-dimensional state in which is attached. The width of the female version of the human head model described above refers to the straight line distance between the most prominent points of the left and right ear rings, the depth refers to the straight line distance from the back of the head to the most prominent points of the nose, and the height refers to the crown. The straight line distance along the vertical direction (body axis direction) from the point to the most point below the jaw. For this reason, the "state of being held in a bottomed tubular shape" means, in other words, the ear hook hole 32 described later in one holding portion 30 and the ear hook hole 32 described later in the other holding portion 30. The width of the female version of the human head model (151.24 mm) means the three-dimensional state separated. Specifically, the steam generator 1 mounted on the volume measuring human head model HM has the following dimensions. In this embodiment, these dimensions were measured using a long jaw caliper (CM-50L) manufactured by Mitutoyo Co., Ltd.

That is, as shown in FIG. 3, the steam generator 1 is in a state of being held in a bottomed cylindrical shape (a state of being attached to the human head model HM for volume measurement), and is on the brow side of the face-contact side end portion 5. The shape-retaining length Lopen in the vertical direction (“L” direction shown in FIG. 5) from the apex to the apex on the jaw side is preferably 150 mm or more, more preferably 175 mm or more, and more preferably 190 mm or more. It is even more preferably 210 mm or more, more preferably 260 mm or less, still more preferably 230 mm or less, still more preferably 220 mm or less. The definition of "length at the time of shape retention Lopen" is the same as the above-mentioned "length L in the vertical direction".

Further, as shown in FIGS. 3 and 4, the steam generator 1 is in contact with the first panel portion 10A in a state of being held in a bottomed cylindrical shape (a state of being attached to the human head model HM for volume measurement). The opening width (opening width Wopen at the time of shape retention) between the face side end portion 5 and the face contact side end portion 5 of the second panel portion 10B is preferably 100 mm or more, more preferably 120 mm or more, and more preferably 130 mm. It is more preferably 180 mm or less, more preferably 160 mm or less, and further preferably 150 mm or less. Here, the "opening width at the time of shape retention" means the end of the face contact side of the first panel portion 10A in a state of being held in a bottomed tubular shape (a state of being attached to the human head model HM for volume measurement). A straight distance W separation along the horizontal (direction orthogonal to the vertical direction and the width direction; the "W" direction shown in FIG. 5) between the 5 and the farthest portion of the second panel portion 10B on the face-contact side end portion 5. To say.

Further, as shown in FIG. 4, the steam generator 1 is in a state of being held in a bottomed cylindrical shape (a state of being attached to the human head model HM for volume measurement), from the face-contact side end portion 5 to the closed side end. The shape-retaining depth Dopen along the width direction up to the portion 6 (the "D" direction shown in FIG. 5) is preferably 70 mm or more, more preferably 80 mm or more, and further preferably 90 mm or more. It is preferable, and it is preferably 120 mm or less, more preferably 110 mm or less, and further preferably 90 mm or less. The definition of "depth at the time of shape retention Dopen" is the same as the above-mentioned "depth D".

Then, for the volume of the internal space 4, such a human head model for volume measurement (for example, the above-mentioned female version human head model) is used, 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.

The volume of the internal space 4 is determined by a method of measuring the amount of water remaining in the steam generator 1 as shown in Japanese Patent Application Laid-Open No. 2012-205926, in addition to the above-mentioned three-dimensional data measuring method. You may ask. That is, first, a liquid-impermeable film is placed over the entire inner surface of the mask body 2, and the shape-retaining length Lopen, the shape-retaining opening width Wopen, and the shape-retaining are the same as when mounted on the volumetric human head model HM. The steam generator 1 is kept in the shape of a bottomed cylinder so as to have a depth of time. Next, the steam generator 1 in a state of being held in a bottomed cylindrical shape is arranged so that the face-contact side end portion 5 faces upward (the closed side end portion 6 faces downward), and the steam generator 1 is placed inside the steam generator 1. Pour water. The face of the volume measuring human head model HM is attached downward to the steam generator 1 whose inside is filled with water in this way, and the holding portion 30 is attached to the ear of the volume measuring human head model HM. After that, the human head model HM for volume measurement is removed from the steam generator 1, and the amount of water remaining in the steam generator 1 is measured. Even by such a method of measuring the amount of water remaining in the steam generator 1, almost the same value as the measuring method using the three-dimensional data using the female version of the human head model described above can be obtained. When it is difficult to convert into three-dimensional data due to the shape, the volume of the internal space 4 may be measured by the method disclosed in Japanese Patent Application Laid-Open No. 2012-205926.

Further, the volume of the internal space 4 may be obtained by calculation as follows. That is, the steam generator 1 is held in a bottomed tubular shape so as to have the same shape-retaining length Lopen, shape-retaining opening width Wopen, and shape-retaining depth Dopen as when mounted on the human head model HM for volumetric measurement. Volume measurement that enters the inside of the steam generator 1 when the steam generator 1 is mounted on the human head model HM for volume measurement from the volume of the steam generator 1 in the closed state (volume of the steam generator 1 when not mounted). It may be obtained by subtracting the volume of the part of the human head model HM (the volume of the insertion part of the human head model HM for volume measurement).

Here, since the volume of the insertion site of the human head model HM for volume measurement is proportional to the peripheral length of the opening of the face-contacting side end portion 5 in the state where the steam generator 1 is kept in the shape of a bottomed cylinder, the following It can be obtained by the method. That is, by the same procedure as the above-mentioned method for measuring the amount of water remaining in the steam generator 1, a liquid-impermeable film is arranged over the entire inner surface of the mask body 2, and the steam generator 1 is formed into a bottomed cylinder. And fill the inside with water. By measuring the amount of water at this time, the "volume of the steam generator 1 when not mounted" is measured. Further, the amount of water remaining after the face of the human head model HM for volume measurement is measured by the same procedure as the method for measuring the amount of water remaining in the steam generator 1 described above. Then, the difference between the amount of water before the face of the human head model HM for volume measurement and the amount of water after the face is applied is obtained by calculation, and this is referred to as "the volume of the insertion site of the human head model HM for volume measurement".

Further, as shown in FIG. 2, each of the first panel portion 10A and the second panel portion 10B has a shape in which the tip is thickened from the face-contact side end portion 5 to the closed side end portion 6, which is omitted in the present embodiment. It is formed in a fan shape.

Specifically, as shown in FIG. 2, the face-contact side end portions 5 of the first panel portion 10A and the second panel portion 10B have a holding portion joining portion 5c to which the holding portion 30 is joined and the holding portion. The eyebrow side edge portion 5a extending from the eyebrow side end (upper end) 5ct of the joint portion 5c to the end portion of the eyebrow side joint portion 6a described later on the eyebrow side joint portion 5c side of the closed side end portion 6 and the holding portion. A jaw side edge portion 5b extending from the jaw side end portion (lower end portion) 5 kb of the portion joint portion 5c to the end portion of the jaw side joint portion 6b described later on the holding portion joint portion 5c side of the closed side end portion 6. Have. The holding portion joint portion 5c is formed in a straight line extending in the vertical direction, and the brow side edge portion 5a arranged on the brow side of the wearer and the chin side edge portion 5b arranged on the jaw side of the wearer. Is inclined toward the closed end 6 in a direction away from each other.

The inclination angle α of the eyebrow side edge portion 5a is preferably 0 ° or more, more preferably 10 ° or more, and more preferably 20 ° or more, from the viewpoint of fitting the inclination of the forehead side surface of the wearer. More preferably, it is more preferably 30 ° or more. Further, the inclination angle α of the eyebrow side edge portion 5a is 90 ° or less from the viewpoint of keeping the mask main body 2 in the shape of a bottomed cylinder and forming a sufficient internal space 4 with the wearer's face. It is preferably 80 ° or less, more preferably 70 ° or less, and even more preferably 60 ° or less.

Further, the inclination angle β of the chin side edge portion 5b is preferably 0 ° or more, more preferably 5 ° or more, and more preferably 10 °, from the viewpoint of fitting to the inclination of the wearer's jaw or the side surface of the face line. The above is more preferable, and the temperature of 15 ° or more is even more preferable. Further, the inclination angle β of the jaw side edge portion 5b is determined from the viewpoint of retaining the shape of the mask body 2 in a bottomed tubular shape and forming a sufficient internal space 4 between the mask body 2 and the wearer's face. From this point of view, it is preferably 90 ° or less, more preferably 80 ° or less, further preferably 70 ° or less, and even more preferably 60 ° or less. More specifically, the inclination angle β of the jaw side edge portion 5b is preferably 5 ° or more and 80 ° or less.

Further, the inclination angle α of the eyebrow side edge portion 5a and the inclination angle β of the chin side edge portion 5b are sums (α + β) of 30 from the viewpoint of fitting to the inclination of the wearer's forehead or the side surface of the chin or face line. It is preferably set to be ° or more, more preferably 35 ° or more, further preferably 40 ° or more, and even more preferably 50 ° or more. Further, the sum of the tilt angles α and the tilt angles β (α + β) is determined from the viewpoint of keeping the mask body 2 in the shape of a bottomed cylinder and forming a sufficient internal space 4 between the mask body 2 and the wearer's face. .. From this point of view, it is preferably 160 ° or less, more preferably 145 ° or less, further preferably 130 ° or less, and even more preferably 120 ° or less.

Here, as shown in FIG. 2, the "inclination angle α of the eyebrow side edge portion 5a" means that the first panel portion 10A and the second panel portion 10B are two along the vertical center line (closed side end portion 6). In the folded state, it refers to the angle formed by the upper extension line ELt of the holding portion joint 5c extending from the end (upper end) 5ct on the eyebrow side of the holding portion joint 5c and the eyebrow side edge 5a. .. Further, the "inclination angle β of the jaw side edge portion 5b" is a holding portion in a state where the first panel portion 10A and the second panel portion 10B are folded in half along the vertical center line (closed side end portion 6). The angle formed by the lower extension line ELb of the holding portion joint portion 5c extending from the jaw side end portion (lower end portion) 5cb of the joint portion 5c and the jaw side edge portion 5b. Both the upper extension line ELt and the lower extension line ELb are parallel to the holding portion joining portion 5c and continuous along the extending direction of the holding portion joining portion 5c.

When the eyebrow side edge portion 5a and the jaw side edge portion 5b are not linear, the intersection with the holding portion joint portion 5c and the closed side end portion 6 (in this embodiment, the eyebrow side joint portion 6a or the eyebrow side joint portion 6a described later) or The virtual straight line connecting the intersection with the jaw-side joint portion 6b) may be regarded as the "eyebrow-side edge portion 5a" or the "jaw-side edge portion 5b", and the inclination angles α and β may be specified. If the holding portion joint portion 5c is not straight and the boundary with the extension line or the chin side edge portion 5a or the chin side edge portion 5b cannot be specified, the brow side edge portion with respect to the width direction (horizontal line) of the mask body 2 Even if the inclination angles α'and β'of 5a or the jaw side edge 5b are obtained and the inclination angles α and β are specified by the formula of "90 ° -α'" or "90 ° -β'". good.

Further, as shown in FIG. 2, the closed side end portions 6 of the first panel portion 10A and the second panel portion 10B have a main coupling portion 6c extending in the vertical direction, a main coupling portion 6c, and a face contact side end portion. The eyebrow side joint portion 6a located between the eyebrow side apex of 5 (the upper end of the eyebrow side edge portion 5a), and the jaw side apex (jaw side edge portion 5b) of the main joint portion 6c and the facial contact side end portion 5 It has a jaw-side joint 6b located between the lower end and the lower end of the eyebrow.

The eyebrow side joint portion 6a is a portion that connects the end portions of the first panel portion 10A and the second panel portion 10B on the eyebrow side. As shown in FIG. 2, the eyebrow side joint portion 6a preferably has a extending length p of the joint region along the width direction of 0 mm or more from the viewpoint of maintaining good handleability and appearance in the production process. It is more preferably 3 mm or more, further preferably 7 mm or more, and even more preferably 10 mm or more. Further, the extended length p is preferably 70 mm or less, more preferably 65 mm or less, and more preferably 60 mm, from the viewpoint of maintaining good fit and appearance of the wearer's forehead. It is more preferably 55 mm or less, and even more preferably 55 mm or less. The eyebrow side joint portion 6a can be appropriately set to an arbitrary length according to the purpose. For example, in the case of providing a fit to the forehead portion, the length is preferably 5 mm or less, more preferably 1 mm. It is as follows.

Further, the jaw-side joint portion 6b is a portion for connecting the jaw-side ends of the first panel portion 10A and the second panel portion 10B. As shown in FIG. 2, the jaw-side joint portion 6b preferably has a extending length q of the joint region along the width direction of 0 mm or more, preferably 10 mm or more, from the viewpoint of suppressing displacement from the wearer's face. It is more preferably 20 mm or more, still more preferably 30 mm or more. Further, the extended length q is determined from the viewpoint that the mask body does not hit the wearer's throat. From this point of view, it is preferably 70 mm or less, more preferably 65 mm or less, further preferably 60 mm or less, and even more preferably 55 mm or less.

Here, when the extending lengths p and q of the brow side joint portion 6a and the jaw side joint portion 6b are 0 mm, it means that the brow side joint portion 6a and the jaw side joint portion 6b are approximate points. When the length p of the brow side joint portion 6a and the chin side joint portion 6b exceeds 0 mm, the brow side joint portion 6a and the jaw side joint portion 6b are the apex of the brow side or the jaw side of the facial contact side end portion 5. It extends along the width direction from the upper end of the brow side edge 5a or the lower end of the chin side edge 5b), and is flat on the brow side end (upper end) and the chin side end (lower end) of the mask body 2. Means that is formed.

In the present embodiment, both the eyebrow side joint portion 6a and the jaw side joint portion 6b have an extension length p, q exceeding 0 mm, and the upper end or the jaw of the eyebrow side edge portion 5a of the facial contact side end portion 5. It extends from the lower end of the side edge portion 5b along the width direction. Further, the mask body 2 has a vertically asymmetrical shape in which the extending length q of the jaw-side connecting portion 6b is longer than the extending length p of the brow-side connecting portion 6a. Further, the eyebrow side connecting portion 6a connects the first panel portion 10A and the second panel portion 10B over the entire area in the extending direction.

The main joint portion 6c is formed in an arc shape extending in the vertical direction from the eyebrow side joint portion 6a to the jaw side joint portion 6b. Further, the main coupling portion 6c has a non-coupling region in a region corresponding to the wearer's mouth, and the non-coupling region is opened to form a breathing hole 6d. That is, the closed end 6 has a breathing hole 6d in the region corresponding to the wearer's mouth. Here, the "region corresponding to the wearer's mouth" is generally a region closer to the chin than the central portion in the vertical direction of the main joint portion 6c.

As shown in FIG. 2, the respiratory hole 6d preferably has a vertical length H of 20 mm or more, more preferably 30 mm or more, and more preferably 40 mm or more, from the viewpoint of facilitating breathing. Is even more preferable, and more preferably 50 mm or more. Further, the vertical length H of the breathing hole 6d is determined from the viewpoint of suppressing steam leakage. From this point of view, it is preferably 100 mm or less, more preferably 90 mm or less, further preferably 85 mm or less, still more preferably 80 mm or less.

[Sheet configuration of 1st panel and 2nd panel]
The first panel portion 10A and the second panel portion 10B are in the form of sheets, and more specifically, each is formed of one sheet. The single sheet forming the first panel portion 10A and the second panel portion 10B may be a single structure (single-layer structure), or may be an integral multi-layer structure in which a plurality of sheets are laminated. Since the sheet-shaped members forming the first panel portion 10A and the second panel portion 10B can impart various functions to the mask main body 2 by imparting different functions to the plurality of sheets. , It is preferable to have a multi-layer structure. When a plurality of sheets are used, each sheet may be in an embossed or laminated state, the entire surface may be joined, or the sheets may be separated from each other. Further, when the sheets are separated from each other, the edges of the sheets may be sealed along the shape of the mask body 2, or only a part of the edges may be joined by a point seal. good.

Hereinafter, in the description of the present embodiment, the first panel portion 10A and the second panel portion 10B will be described as being formed by one sheet having a multilayer structure. Specifically, as shown in FIG. 1, the first panel portion 10A and the second panel portion 10B each have an inner surface sheet 14 that forms an inner surface when it becomes three-dimensional, and a third panel portion 10B when it becomes three-dimensional. It includes an outer surface sheet 16 that forms an outer surface. The inner surface sheet 14 and the outer surface sheet 16 are formed to have the same shape and size, and are a single sheet having a multilayer structure in which the inner surface sheet 14 and the outer surface sheet 16 are laminated. As described above, instead of the configuration in which the first panel portion 10A and the second panel portion 10B, which are each composed of one sheet, are mechanically connected, the first panel portion 10A and the second panel portion 10B are used from the beginning. It may be configured to form one sheet as a unit.

In the mask main body 2 according to the present embodiment, the steam generator 20 is arranged between the inner surface sheet 14 and the outer surface sheet 16. That is, when both the inner surface sheet 14 and the outer surface sheet 16 are made of a single-layer or multi-layered nonwoven fabric as described later, the steam generator 20 is sandwiched between two or more nonwoven fabrics. However, the present invention is not limited to this, and a pocket-shaped storage portion may be provided on the inner surface of the mask body 2 so that the steam generator 20 can be attached to and detached from the storage portion, or the mask main body may be provided with a fixing means such as an adhesive. The steam generator 20 may be fixed to the inner surface of 2. Further, by locally non-adhering the outer surface sheet 16 and the inner surface sheet 14, an opening and a storage space into which the water vapor generator 20 can be inserted and removed are formed between the outer surface sheet 16 and the inner surface sheet 14. Is also good.

An adhesive (not shown) is applied to the outer surface sheet 16, and the steam generator 20 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 the face mask can be used, and the type is not particularly limited as long as it has a certain degree of air permeability. For example, non-woven fabrics, woven fabrics, fiber sheets such as paper, resin foam sheets, metal sheets, or combinations thereof are used. Above all, it is preferable to use a non-woven fabric from the viewpoint of ease of processing and economy. As the fiber material of the non-woven fabric, for example, one or two 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 the above-mentioned one or more kinds of 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 entanglement method, and the solvent adhesion 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. The nonwoven fabric may be chemically treated according to the purpose.

It is preferable that the inner surface sheet 14 is breathable from the viewpoint that the action of the emitted steam is efficiently applied to the entire face 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, and may be a breathable sheet or a non-breathable sheet, or 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 of a bottomed cylinder when worn. 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 5 g / m ² or more, more preferably 10 g / m ² or more, and 15 g / m from the viewpoint of enhancing the thickness and the sheet strength in a well-balanced manner. It is more preferably ² or more, and even more preferably 20 g / m ² or more. Further, the basis weight of the inner surface sheet 14 is preferably 60 g / m ² or less, more preferably 50 g / m ² or less, and 40 g / m ² or less, from the viewpoint of efficiently supplying steam to the wearer. It is more preferably 30 g / m ² or less, and even more preferably 30 g / m 2.

The thickness of the inner surface sheet 14 is preferably 5 μm or more, more preferably 10 μm or more, and further preferably 20 μm or more. The thickness of the inner surface sheet 14 is preferably 500 μm or less, more preferably 450 μm or less, and further preferably 400 μm or less.

Further, the basis weight of the outer surface sheet 16 is from the viewpoint of keeping the shape of the mask body 2 stable, holding the steam generator 20 stably, and further having a shape-retaining property that sufficiently holds the space inside the steam generator 1. Is determined from. From this point of view, it is preferably 10 g / m ² or more, more preferably 20 g / m ² or more, further preferably 30 g / m ² or more, and further preferably 40 g / m ² or more. preferable. Further, the basis weight of the outer surface sheet 16 is preferably 100 g / m ² or less, and more preferably 90 g / m ² or less, from the viewpoint of preventing displacement due to the weight of the mask and providing a comfortable fit. , 80 g / m ² or less, and even more preferably 70 g / m ² or less.

Further, the air permeability of the inner surface sheet 14 is preferably 300 seconds / 100 mL or less, more preferably 200 seconds / 100 mL or less, and 100 seconds / 100 mL or less from the viewpoint of efficiently applying steam. It is even more preferably 5 seconds / 100 mL or less, and most preferably 0 seconds / 100 mL. If the air permeability is satisfied, the inner surface sheet 14 may be a non-breathable sheet in which a part thereof does not have air permeability. When the inner surface sheet 14 having an air permeability of 100 seconds / 100 mL or less is used, the water vapor from the water vapor generator 20 can be efficiently discharged from the inner surface sheet 14.

Here, the air permeability can be measured as follows. Air permeability is a value measured by JIS P8117 (revised 2009) and is defined as the time it takes for 100 ml of air to pass through an area of 6.42 cm ² under constant pressure. Therefore, a large value of air permeability means that it takes a long time for air to pass through, that is, the air permeability is low. On the contrary, a small value of air permeability means that the air permeability is high. In this way, the relationship between the magnitude of the air permeability value and the level of air permeability is shown to be opposite. The air permeability can be measured with the Oken type air permeability meter. In the present specification, those having an air permeability of 30,000 seconds / 100 ml or more are treated as "difficult to ventilate", and those having an air permeability of 80,000 seconds / 100 ml or more are treated as "non-ventilated".

Before use, the mask body 2 having the above configuration is flattened by folding the first panel portion 10A and the second panel portion 10B in half along the vertical center line (closed end portion 6). It is folded. In this state, the holding portion 30 can be made compact by folding and storing the holding portion 30 inside the mask main body 2 (see FIG. 6) as described later. On the other hand, the mask main body 2 is opened from the edge portion (face contact side end portion 5) opposite to the vertical center line (closed side end portion 6) at the time of use, and the inner surface on which the mask main body 2 is folded is formed. It is worn so that it faces the wearer's side. That is, when the mask body 2 is used, the face-contact side end portion 5 of the first panel portion 10A and the face-contact side end portion 5 of the second panel portion 10B are separated from each other, so that the mask main body 2 is closed on the vertical center line. The end portion 6 projects forward of the mask body 2 to form a hollow shape-retaining three-dimensional shape. In the mask body 2 formed in such a three-dimensional shape, the opening of the expanded face-contact side end portion 5 is in close contact with the wearer's face, so that the space between the wearer's face and the mask body 2 is reached. There is an advantage that gaps are less likely to occur.

[Structure of holding part]
The holding portion 30 is joined to both ends in the width direction of the mask main body 2 to hold the mask main body 2 on the wearer's face. Hereinafter, an example of the holding unit 30 will be described.

In the present embodiment, the holding portions 30 are ear hooks that can be attached to the wearer's ears, and are provided in pairs at the left and right ends of the mask body 2 in the longitudinal direction (horizontal width direction). As shown in FIG. 2, the holding portion 30 includes an ear hook main body 31, an ear hook hole 32 through which the wearer's ear can be inserted, and a seal portion 39 (FIG. 3) for joining the mask main body 2 and the ear hook main body 31. 6) and.

The ear hook main body 31 is joined to the upper side, the lower side, the open edge of the holding portion 30 that is not joined to the mask main body 2, and the holding portion joining portion 5c of the face-contact side end portion 5 of the mask main body 2. It has a joint edge that has been made. In the present embodiment, the ear hook main body 31 is flat and has a substantially square shape with rounded corners. Specifically, the upper side and the lower side are tapered from the joint edge toward the open edge, and the open edge is formed in an arc shape.

In the present embodiment, it is preferable that the total length (mm) of the pair of holding portions 30 parallel to the width direction of the mask body 2 is not more than the width (mm) of the mask body 2. In the present embodiment, since the holding portions 30 are paired, the length (mm) parallel to the width direction of the mask main body 2 of one holding portion 30 is divided into two by the vertical center line (closed side end portion 6). It is smaller than the width (mm) of the other mask body 2. As a result, when the steam generator 1 is folded in half along the vertical center line, the holding portion 30 overlaps with the mask main body 2 and is unnaturally folded inside the mask main body 2, increasing the thickness or the holding portions 30. It is possible to suppress the entanglement of the steam generator 1 and make the steam generator 1 more compact. Further, as shown in FIG. 6, when the holding portion 30 is folded inside the mask main body 2, the holding portion 30 is less likely to be contaminated, and hygiene can be further improved.

Further, since the holding portion 30 is smaller than the mask main body 2 in this way, the mask main body 2 becomes relatively large, and as a result, the internal space of the mask main body 2 is spacious and wide when the steam generator 1 is worn. become. Therefore, it is possible to reduce the suffocation due to humidification while inhaling sufficiently humidified air. Such an effect is particularly remarkable when the steam generator 20 that positively releases warm humidity, for example, the hot steam is generated by the oxidation reaction of the metal to be oxidized. The length of the holding portion 30 parallel to the width direction of the mask body 2 means a state in which the holding portion 30 is not extended and is intended to be a state before the steam generator 1 is used.

The holding portion 30 may be made of the same material as the mask main body 2 or may be made of a different material, but from the viewpoint of improving the fit of the mask main body 2, it is preferably a material having elasticity. , The one that easily extends in the width direction of the mask body 2 is preferable. In the present embodiment, the holding portion 30 is preferably made of a non-woven fabric, and more preferably a non-woven fabric having elasticity. From the viewpoint of the bondability with the mask body 2, it is preferable to contain a thermoplastic resin as a constituent fiber. Further, from the viewpoint of ease of processing, it is more preferable to contain polypropylene. The holding portion 30 may further contain a thermoplastic resin other than polypropylene, and for example, it is preferable to further contain one or more selected from the group consisting of urethane, polyethylene, and polyethylene terephthalate, and synthetic fibers made of urethane are used. Is more preferable. With such a configuration, the flexibility and fit of the holding portion 30 can be efficiently exhibited, and sufficient strength can be exhibited when the steam generator 1 is used.

The holding portion 30 is not limited to the above-mentioned flat ear hook as long as the mask body 2 can be held in front of the wearer's face, and can be normally used for a mask. It can be arbitrarily used, for example, a rubber string-shaped ear hook 30'as in the first modification shown in FIG. 12, or a face-contact side end portion 5 to a second panel portion 10B of the first panel portion 10A. It is possible to adopt various configurations such as one or a plurality of bands spanned over the face-contact side end portion 5. Further, the holding portion 30 is not limited to the configuration of another member joined to both ends in the width direction of the mask main body 2, and may be configured integrally with the mask main body 2. In the steam generator 1A according to the first modification shown in FIG. 12, the same reference numerals as those of the steam generator 1 according to the present embodiment are used for the configuration common to the steam generator 1 according to the present embodiment. ..

[Structure of water vapor generator]
The water vapor generator 20 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. That is, the steam generator 20 according to the present embodiment is a hot steam generator configured to generate hot steam by an oxidation reaction of an oxidizable metal. Examples of the form of such a steam generator 20 include a mixture of powders (see, for example, the description of JP-A-2004-16753 (Japanese Patent Application No. 2002-180501)), a sheet such as an abstract sheet (for example, JP-A-). Description of Japanese Patent Application Laid-Open No. 2005-058744 (see Japanese Patent Application No. 2004-31360) or a coating sheet coated with a dispersion liquid or the like on a substrate (for example, Japanese Patent Application Laid-Open No. 2013-146555 (Japanese Patent Application No. 2012-279804)). See) etc. can be adopted. Further, the steam generator 20 preferably contains an oxidizable metal, a carbon component and water.

The oxidizable metal is a metal that emits 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 μm or more and 300 μm or less.

The carbon component has at least one function of water retention ability, oxygen supply ability and catalytic ability, and a carbon component having these three functions is preferable. 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.

The steam generator 20 further contains a water-retaining material, and the type of the water-retaining material is not particularly limited as long as it can retain water, but it may be excellent in steam dissipation. preferable. Examples of the water-retaining material include one or more selected from water-absorbent powders such as carbon components, fibrous materials, highly absorbent polymers (SAP), starch, zeolites, pearlite, and vermiculite. .. An appropriate water absorbing agent is used according to the form of the steam generator 20.

The planar shape of the steam generator 20 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, it is preferable to install one or two or more steam generators 20 in the steam generator 1, preferably one or two or more installed in each panel, and install them on both the left and right panels. Is more preferable. The heat generation characteristics of the two steam generators 20 may be the same or different, but are more preferably the same.

Here, the structure of the steam generator 20 will be described in detail. As shown in FIG. 7, the steam generator 20 is a rectangular flat body, and has a heat generating layer 70 between the base material layer 50 and the water retention layer 60. The first sheet 27 on the water-retaining layer side and the second sheet 80 on the base material layer side are sealed in a closed space by joining the peripheral edges of the two sheets. As described above, the first sheet 27 on the water-retaining layer side and the second sheet 80 on the base material layer side have a bag shape, so that the amount of heat and steam can be appropriately adjusted. If the first sheet 27 has air permeability, steam can be efficiently discharged to the user side. The heat generating layer 70 may be provided on one surface of the water retention layer 60, or may be provided so as to be sandwiched between the water retention layer 60 and the base material layer 50. FIG. 7 shows an example in which the heat generating layer 70 is provided so as to be sandwiched between the water retention layer 60 and the base material layer 50.

An example of the steam generator 20 according to the present embodiment will be described in more detail with reference to FIG. FIG. 8 shows a form of the steam generator 20 according to an example as viewed from the surface in contact with the skin side of the user. As shown in FIG. 8, the steam generator 20 according to an example is a rectangular flat body, and includes a base material layer 50, a heat generating layer 70 laminated on the base material layer, and at least a part of the heat generating layer 70. It is provided with a water retention layer 60 laminated so as to be in contact with each other. A heat transfer inhibition region R1 that inhibits heat transfer generated from the heat generation layer 70 may be formed in a part of the heat generation layer 70 in the plane direction on the water retention layer 60 side. By providing the heat transfer inhibition region R1, appropriate heat supply is appropriately performed. As shown in FIG. 8, the water vapor generator 20 is sandwiched between the first sheet 27 on the water retention layer 60 side and the second sheet 80 on the base material layer side, and the peripheral edges of the two

sheets

27 and 80 are joined to each other. As a result, it is in a state of being enclosed in a closed space.

(Heat transfer inhibition area)
In the water vapor generator 20 according to the present embodiment, the heat transfer inhibitor R1a that inhibits heat transfer is provided in the entire area of the heat transfer inhibitory region R1. As shown in FIG. 8, the heat transfer inhibitor R1a is laminated in the region of the right half in the plane direction of the heat generating layer. On the other hand, the region (the region on the left half) that is not the heat transfer inhibition region R1 in the plane direction on the water retention layer side of the heat generating layer is the non-heat transfer inhibition region R2. Here, the “heat transfer inhibition region” in the present specification means a region that inhibits heat transfer transmitted to the water retention layer 23 side. In this way, by providing the heat transfer inhibition region R1 and the non-heat transfer inhibition region R2, the amount of steam from the portion touching the skin, the temperature, and the like can be appropriately adjusted.

Further, it is preferable that the water vapor generator 20 is installed so that the heat transfer inhibition region R1 is located at or near the place where the mask body 2 touches the wearer's face (skin). Specifically, the steam generator 20 is arranged so that the heat transfer inhibition region R1 is located on the holding portion 30 side. In this way, by arranging the heat transfer inhibition region R1 at the position in contact with the wearer's face (skin) and in the vicinity thereof among the places where the steam generator 20 of the mask body 2 is provided, non-heat transfer inhibition is performed. Even if the amount of heat generated from the region R2 is increased, heat is transferred to the wearer's face (skin) via the heat transfer inhibitor R1a in the heat transfer inhibition region R1, so that the heat is transferred to the wearer's face (skin). It doesn't cause any discomfort.

In the steam generator 20, the total cumulative amount of steam generated in 10 minutes from the start of steam generation (hereinafter referred to as "10-minute steam generation amount") is 160 mg or more from the viewpoint of efficiently filling the space with steam. It is preferably 800 mg or more, more preferably 1200 mg or more, and even more preferably 1600 mg or more. Further, the amount of steam generated for 10 minutes is preferably 2400 mg or less, more preferably 2200 mg or less, still more preferably 2000 mg or less, from the viewpoint of maintaining a comfortable temperature and ease of breathing. It is even more preferably 1800 mg or less. The amount of steam generated for 10 minutes is intended to be the total amount (total) of all the steam generators 20 installed in the mask main body 2.

In the steam generator 20 according to the present embodiment, the amount of steam generated from one cell for 10 minutes is preferably 200 mg or more, more preferably 300 mg or more, still more preferably 400 mg or more. .. Further, the amount of steam generated from one cell for 10 minutes is preferably 600 mg or less, more preferably 550 mg or less, further preferably 500 mg or less, and even more preferably 450 mg or less. By making such a form, the amount of steam generated from each cell can be appropriately adjusted according to the volume of the internal space 4 described later, and the steam emitted from the cell does not become too hot, which is appropriate for the user's skin. Can supply steam and heat.

Here, it is preferable that the amount of steam generated for 10 minutes is appropriately adjusted according to the volume of the internal space 4 of the mask main body 2. Specifically, the amount of steam generated for 10 minutes per unit volume is preferably 1 mg / cm ³ or more, more preferably 2 mg / cm ³ or more, and more preferably 3 mg, from the viewpoint of imparting a sufficient steam feeling. It is more preferably / cm ³ or more, and even more preferably 4 mg / cm ³ or more. The amount of steam generated for 10 minutes per unit volume is preferably an amount that allows the user to breathe comfortably, specifically, preferably 10 mg / cm ³ or less, and 9 mg / cm ³ or less. Is more preferably 8 mg / cm ³ or less, and even more preferably 7 mg / cm ³ 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 steam generator 1 is started to be used, so that the effect of steam can be more effectively applied. Can be done.

[Measurement method of water vapor generation]
Here, the 10-minute steam generation amount of the steam generator 20 is a numerical value measured as follows using the device 40 shown in FIG. In the following description, the unheated steam generator 20 that is enclosed in an oxygen blocking bag or the like and is in a sealed state is targeted, the opening of the oxygen blocking bag or the like is started, and the steam generator 20 is air-conditioned. The time required from the start of opening to the installation in the measuring device 40 shown in FIG. 9, that is, the time point 5 seconds after the start of opening, is defined as the "starting point of heat generation". The device 40 shown in FIG. 9 has an aluminum measuring chamber (volume 4.2 L) 41 and an inflow path 42 for flowing dehumidified air (humidity less than 2%, flow rate 2.1 L / min) into the lower part of the measuring chamber 41. , An outflow path 43 that allows air to flow out from the upper part of the measurement chamber 41, an inlet thermometer 44 and an inlet thermometer 45 provided in the inflow path 42, and an outlet thermometer 46 and an outlet flow rate provided in the outflow path 43. A total of 47 and a thermometer (thermista) 48 provided in the measuring chamber 41 are provided. As the thermometer 48, one having a temperature resolution of about 0.01 ° C. is used. The amount of steam generated in the present specification means the total amount measured up to 10 minutes after the "starting point of heat generation" of the steam generator 20 as a starting point.

The steam generator 20 can also contain, for example, the fragrance component described in "Synthetic fragrance chemistry and product knowledge" (written by Motokazu Indo, The Chemical Daily) within a range that does not interfere with the effects of the present invention. Specifically, terpene hydrocarbons such as Milsen, Farnesen, Pinen, Limonen, Kamphen, Ferrandren, Tarpinen, Tarpinolene, p-Simen, Sedren, Cariophyllene; Hexylcinnamic aldehyde, 2-Methyl-3- (4--). Aldehydes such as tert-butylphenyl) -propanol, 4- (4-hydroxy-4-methylpentyl) -3-cyclohexene-1-carboxyaldehyde, vanillin; benzyl alcohol, phenylethyl alcohol, pumpul fleur (2-methyl) Aromatic alcohols such as -4-phenylpentanol), dimethylbenzylcarbinol, phenylhexanol (3-methyl-5-phenylpentanol); phenols such as anetol and eugenol; γ-nonalactone, γ-undecalactone Examples thereof include lactones such as.

[How to use the steam generator]
Next, a method of using the steam generator 1 according to the present embodiment will be described.
In the present embodiment, since the steam generator 20 is integrated with the mask main body 2, the entire steam generator 1 is stored in a state of being enclosed in an oxygen blocking bag. In this storage state, the mask main body 2 is folded around the vertical center line in a state where the holding portion 30 is folded inward.

First, the wearer opens the packaging bag at the time of wearing and takes out the steam generator 1 from the oxygen blocking bag. As a result, the steam generator 20 comes into contact with air, and the steam generator 20 starts to generate heat due to the oxidation reaction of the metal to be oxidized contained in the steam generator 20.

After removing the steam generator 1 from the oxygen blocking bag, the wearer opens the mask body 2 folded in half from the face-contact side end portion 5 side, and takes out the pair of holding portions 30 from the inside of the mask body 2. .. Then, as shown in FIG. 10, the holding portion 30 is pulled with a finger while the mask body 2 is in contact with the face, and the ear is inserted into the ear hook hole 32. By hooking the pair of holding portions 30 to the left and right ears of the wearer in this way, the mask is maintained so that the entire face of the wearer is covered by the mask body 2 as shown in FIG. The main body 2 can be held on the wearer's face.

Then, when the steam generator 20 generates heat while the entire face is covered by the mask body 2 in this way, the water contained in the steam generator 20 is heated by this heat, and steam at a predetermined temperature (heat). (Steam), which 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 wearer's face. As described above, according to the steam generator 1 according to the present embodiment, the thermal steam can be supplied to the wearer by a simple method, and a beauty effect such as elimination of skin troubles and a relaxing effect can be obtained.

[Advantages of steam generator according to this embodiment]
As described above, the steam generator 1 according to the present embodiment has a bottomed tubular mask body 2 having an opening at the end portion 5 on the face contact side, and steam capable of generating steam in the internal space 4 of the mask body 2. With the generator 20, the mask body 2 has a peripheral surface extending from the face-contact side end portion 5 toward the obstruction-side end portion 6 so that an internal space 4 is formed between the mask body 2 and the wearer's face. The peripheral length of the opening of the face-contact side end portion 5 of the mask main body 2 is 450 mm or more and 700 mm or less.

According to the steam generator 1 having such a configuration, it can be used as a three-dimensional face mask that covers the entire face, and the steam generated by the steam generator 20 is formed in front of the face. It is possible to fill the inside of the internal space 4 and evenly supply steam to the entire face. Therefore, the steam generator 1 according to the present embodiment provides just the right comfort for the entire face, which is sensitive to temperature, even if the steam generator 20 that increases the amount of steam is arranged, and has an excellent beauty effect and an excellent beauty effect. It has the remarkable advantage of being able to obtain a relaxing effect.

[Modification example]
Although the preferred embodiments of the present invention have been exemplified and described 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 the above embodiments.

For example, in the above-described embodiment, it has been described as a face mask type steam generator capable of covering the entire face, but the present invention is not limited to this. For example, it can also be used as a type of steam generator that covers from the nose to the neck.

In the above-described embodiment, the mask main body 2 includes the first panel portion 10A and the second panel portion 10B, and has been described as being deformable from a folded bag shape to a three-dimensional bottomed cylinder shape. It is not limited to, and may be preliminarily retained.

In the above-described embodiment, the mask main body 2 has been described as being formed by superimposing the first panel portion 10A and the second panel portion 10B separated from each other and subsequently joining them at the closed side end portion 6. However, the present invention is not limited to this, and for example, the first panel portion 10A and the second panel portion 10B fold a single sheet-like member integrally continuous at the vertical center line, and the discontinuous portion is locally. It may be a configuration formed by binding to.

In the above-described embodiment, the eyebrow-side edge portion 5a and the chin-side edge portion 5b of the face-contact side end portion 5 are described as being inclined in a direction away from each other toward the obstruction-side end portion 6, but the present invention is limited to this. Instead, only one of the eyebrow side edge portion 5a and the jaw side edge portion 5b may be inclined, or both the eyebrow side edge portion 5a and the jaw side edge portion 5b may not be inclined. Further, the eyebrow side edge portion 5a and the chin side edge portion 5b are not limited to a configuration extending in a straight line, and various shapes in which a straight line, a bending line, an arc, and the like are arbitrarily combined can be adopted.

Further, the holding portion joint portion 5c is not limited to a linear configuration extending along the vertical direction, and may be configured to extend along a direction inclined with respect to the vertical direction, and may be a straight line, a bending line, and a bending line. Various shapes can be adopted by arbitrarily combining arcs and the like. Further, in the above-described embodiment, it has been described that the eyebrow side joint portion 6a and the jaw side joint portion 6b and the holding portion joint portion 5c are formed so as to have a perpendicular relationship with each other, but the present invention is not limited to this. One or both of the brow side joint portion 6a and the jaw side joint portion 6b may be inclined with respect to the holding portion joint portion 5c.

In the above-described embodiment, both the eyebrow side joint portion 6a and the jaw side joint portion 6b extend along the width direction, and flat portions are formed on the eyebrow side end portion and the jaw side end portion of the mask body 2. However, the present invention is not limited to this, and as in the second modification shown in FIG. 13 and the third modification shown in FIG. 14, either the eyebrow side end portion or the chin side end portion of the mask body 2 is used. A configuration in which a flat portion is formed only on the eyebrow side joint portion (a configuration in which the extending lengths p and q of either one of the brow side joint portion 6a and the jaw side joint portion 6b are 0 mm), for example, the fourth modification shown in FIG. As in the fifth modification shown in FIG. 16, a configuration in which a flat portion is not formed on both the eyebrow side end portion and the jaw side end portion of the mask body 2 (extended length of the eyebrow side joint portion 6a and the jaw side joint portion 6b). It may be configured such that p and q are 0 mm). The

steam generators

1B, 1C, 1D, and 1E according to the second to fifth modifications shown in FIGS. 13 to 16 have a configuration different from that of the steam generator 1 according to the present embodiment. , And for the common configuration, the same reference numerals as those of the steam generator 1 according to the present embodiment are used.

In the above-described embodiment, the main connecting portion 6c has been described as being formed in an arc shape, but the present invention is not limited to this, and if the internal space 4 can be formed between the main connecting portion 6c and the wearer's face, for example, FIG. As in the third modification shown in FIG. 16 and the fifth modification shown in FIG. 16, various shapes in which straight lines, bending lines, arcs, and the like are arbitrarily combined can be adopted.

In the above-described embodiment, it has been described that the breathing hole 6d is provided in the region corresponding to the wearer's mouth in the closed side end portion 6 (main joint portion 6c), but the present invention is not limited to this, and other than the closed side end portion 6. The breathing hole 6d may be formed in the region (for example, the peripheral surface of the mask body 2 or the like), or the breathing hole 6d may not be provided.

In the above-described embodiment, the mask main body 2 has been described as having a vertically asymmetrical shape, but the present invention is not limited to this, and the center of the mask main body 2 in the vertical direction is set as in the fourth modification shown in FIG. It may be configured to have a vertically symmetrical shape with the passing horizontal line as a boundary.

In the above-described embodiment, the mask body 2 has been described as having a holding portion 30 for holding the mask body 2 in front of the wearer's face, but the present invention is not limited to this, and the configuration is not limited to the holding portion 30, that is, the mask body 2 is provided. The face-contact side end portion 5 may be fitted into the wearer's face, or the mask body 2 may be placed on the wearer's face.

In the above-described embodiment, the steam generator 20 has been described as generating hot steam by the oxidation reaction of the metal to be oxidized, but the present invention is not limited to this, and for example, a filter holding water is used before use. It is possible to adopt various arbitrary configurations such as a configuration that enables humidification by heating with a microwave oven or the like.

In the above-described embodiment, two steam generators 20 are provided in 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 One or three or more may be provided in each of the second panel portions 10B, or only one of the first panel portion 10A and the second panel portion 10B may be provided. Further, the structure is not limited to the configuration in which the steam generator 20 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 20 is provided in the storage portion. The steam generator 20 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 20 is retrofitted to the mask main body 2 as described above, only the steam generator 20 may be stored in a state of being enclosed in an oxygen blocking bag. When a plurality of steam generators 20 are provided, the steam characteristics and shapes of the steam generators 20 may be the same or different, but from the viewpoint of uniformly supplying steam and scent to the wearer, the same steam has the same shape. It is preferable to have characteristics.

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 comprising a bottomed tubular mask body having an opening at the end on the face-contact side and one or more steam generators capable of generating steam in the internal space of the mask body. The mask body extends from the face-contacting end to the obstructed end located on the opposite side of the face-contacting end so that the internal space is formed between the mask body and the wearer's face. A steam generator having a surface and having a circumference of an opening at the end of the face-contacting side of the mask body of 450 mm or more and 700 mm or less.

<2>
The face-contacting end of the mask body is configured to form an opening having a size capable of covering the entire face of the wearer in a state of being held in a bottomed tubular shape <1>. The steam generator described in.

<3>
The circumference of the opening of the face-contacting end of the mask body is preferably 450 mm or more, more preferably 460 mm or more, and more preferably 480 mm or more, from the viewpoint of covering the entire face of the wearer. Further, it is more preferably 500 mm or more, and further preferably 700 mm or less, more preferably 670 mm or less, from the viewpoint of suppressing a gap with the wearer's face and suppressing vapor leakage. The steam generator according to <1> or <2>, further preferably 630 mm or less, and even more preferably 600 mm or less.

<4>
The mask main body includes a first panel portion forming a half peripheral surface of the mask main body and a second panel portion forming the remaining half peripheral surface, and the first panel portion and the second panel portion are in contact with each other. The edges excluding the facial end are formed in a bag shape connected to each other, and can be deformed into the bottomed cylinder shape by widening the opening of the facial contact end <1. > The steam generator according to any one of <3>.

<5>
The face-contacting end portion is located on the eyebrow side edge portion arranged on the eyebrow side of the wearer and on the chin side of the wearer in the bag-like state in which the first panel portion and the second panel portion are overlapped. The steam generator according to any one of <1> to <4>, wherein the arranged jaw-side edge portion is inclined in a direction away from each other toward the closed-side end portion.

<6>
The inclination angle of the jaw side edge portion is 5 ° or more and 80 ° or less, and the sum of the inclination angle of the eyebrow side edge portion and the inclination angle of the jaw side edge portion is 30 ° or more and 160 ° or less. The steam generator according to any one of 1> to <5>.

<7>
The inclination angle of the chin side edge portion is preferably 0 ° or more, more preferably 5 ° or more, and more preferably 10 ° or more from the viewpoint of fitting to the inclination of the wearer's jaw or the side surface of the face line. Further, it is more preferable that the temperature is 15 ° or more, and 90. Any one of <1> to <6>, preferably ° or less, more preferably 80 ° or less, further preferably 70 ° or less, and even more preferably 60 ° or less. The steam generator described in.

<8>
The inclination angle of the brow side edge portion is preferably 0 ° or more, more preferably 10 ° or more, and further preferably 20 ° or more, from the viewpoint of fitting to the inclination of the wearer's forehead side surface. It is more preferably 30 ° or more, and more preferably 90 ° or less from the viewpoint of retaining the shape of the mask body in a bottomed tubular shape and forming a sufficient internal space between the mask body and the wearer's face. The item is described in any one of <1> to <7>, wherein the temperature is preferably 80 ° or less, more preferably 70 ° or less, still more preferably 60 ° or less. Steam generator.

<9>
The sum of the inclination angle of the brow side edge portion and the inclination angle of the chin side edge portion is set to be 30 ° or more from the viewpoint of fitting to the inclination of the wearer's forehead or the side surface of the chin or face line. More preferably, it is more preferably 35 ° or more, further preferably 40 ° or more, further preferably 50 ° or more, and the mask body is kept in a bottomed tubular shape. From the viewpoint of forming a sufficient internal space between the wearer's face and the wearer's face, it is preferably 160 ° or less, more preferably 145 ° or less, further preferably 130 ° or less, and 120 ° or less. The steam generator according to any one of <1> to <8>, further preferably.

<10>
The closed-side end portion includes an eyebrow-side joint portion that connects the eyebrow-side end portions of the first panel portion and the second panel portion, and a jaw-side end portion of the first panel portion and the second panel portion. The steam generator according to any one of <1> to <9>, which has a jaw-side joint portion for connecting the two.

<11>
From the viewpoint of good handling and appearance in the production process, the brow side joint portion preferably has a extending length p of the joint region along the width direction of 0 mm or more, and preferably 3 mm or more. It is more preferably 7 mm or more, further preferably 10 mm or more, and preferably 70 mm or less from the viewpoint of maintaining good fit and appearance of the wearer's forehead. The steam generator according to any one of <1> to <10>, wherein it is more preferably 65 mm or less, further preferably 60 mm, and further preferably 55 mm or less.

<12>
From the viewpoint of suppressing the slippage of the jaw-side joint portion with respect to the wearer's face, the extending length q of the joint region along the width direction is preferably 0 mm or more, and more preferably 10 mm or more. It is more preferably 20 mm or more, further preferably 30 mm or more, and from the viewpoint that the mask body does not hit the wearer's throat, it is preferably 70 mm or less, and more preferably 65 mm or less. The steam generator according to any one of <1> to <11>, preferably 60 mm or less, more preferably 55 mm or less.

<13>
The steam generator according to any one of <1> to <12>, further comprising one or more holding portions for holding the mask body in front of the wearer's face.

<14>
The mask body is maintained in the shape of a bottomed cylinder, and the volume of the internal space in a state of being attached to a human head model for volume measurement is 150 cm ³ or more and 400 cm ³ or less, any one of <1> to <13>. The steam generator according to item 1.

<15>
The mask body is kept in the shape of a bottomed cylinder, and the volume of the internal space when attached to the human head model for volume measurement keeps the handleability and appearance good, and heat steam is applied to the entire face. From the viewpoint of evenly spreading, it is preferably 150 cm ³ or more, more preferably 180 cm ³ or more, further preferably 220 cm ³ or more, further preferably 250 cm ³ or more, and further. From the viewpoint of facilitating breathing and maintaining good handleability and appearance, it is preferably 400 cm ³ or less, more preferably 370 cm ³ or less, further preferably 330 cm ³ or less, and even more preferably 300 cm. The steam generator according to any one of <1> to <14>, which is more preferably ³ or less.

<16>
The head model for volume measurement is a female head model (width 151.24 mm, width 151.24 mm) modeled based on the female version average head data (latest data as of September 10, 2020) manufactured by Digital Human Technology Co., Ltd. The steam generator according to any one of <1> to <15>, which has a depth of 206.82 mm and a height of 233.01 mm).

<17>
The volume of the internal space is a volume measured by using the human head model for volume measurement, reproducing the usage state of the steam generator, and converting it into three-dimensional data using a three-dimensional measuring machine. The steam generator according to any one of 16>.

<18>
The steam generator is vertically held from the apex of the brow side to the apex of the chin side of the end of the face-contacting side in a state of being held in a bottomed tubular shape (a state of being attached to a human head model for volumetric measurement). The shape-retaining length Lopen is preferably 150 mm or more, more preferably 175 mm or more, further preferably 190 mm or more, still more preferably 210 mm or more, and 260 mm or less. The steam generator according to any one of <1> to <17>, preferably 230 mm or less, more preferably 220 mm or less, and further preferably 220 mm or less.

<19>
The steam generator is in a state of being held in a bottomed tubular shape (a state of being attached to a human head model for volume measurement), and the face-contacting end portion of the first panel portion and the face-contacting portion of the second panel portion. The opening width (opening width at the time of shape retention) with the side end portion is preferably 100 mm or more, more preferably 120 mm or more, further preferably 130 mm or more, and 180 mm or less. The steam generator according to any one of <1> to <18>, preferably 160 mm or less, more preferably 150 mm or less.

<20>
The steam generator is held along the width direction from the face-contact side end to the closed-side end in a state of being held in a bottomed cylindrical shape (a state of being attached to a human head model for volume measurement). The shape depth Dopen is preferably 70 mm or more, more preferably 80 mm or more, further preferably 90 mm or more, preferably 120 mm or less, and more preferably 110 mm or less. The steam generator according to any one of <1> to <19>, which is more preferably 90 mm or less.

<21>
The surface area (back surface area) of the inner surface of the mask body in the state of being held in the shape of a bottomed cylinder forms a sufficient internal space between the mask body and the wearer's face, and the hot steam is evenly distributed over the entire face. From the viewpoint of spreading, it is preferably 300 cm ² or more, more preferably 350 cm ² or more, and from the viewpoint of suppressing the gap with the wearer's face and suppressing steam leakage, it is 600 cm ² or less. The steam generator according to any one of <1> to <20>, which is preferably present, and more preferably 550 cm ² or less.

<22>
In the mask body, both the eyebrow side joint portion and the jaw side joint portion extend along the width direction, the main joint portion is formed in an arc shape, and the mask body has a vertically asymmetrical shape, and has a back surface area. However, the steam generator according to any one of <1> to <21>, preferably 500 cm ² or more and 600 cm ² or less.

<23>
In the mask body, neither the eyebrow side joint portion nor the jaw side joint portion extends along the width direction, the main joint portion is formed in an arc shape, and the mask body has a vertically symmetrical shape (dome shape). The steam generator according to any one of <1> to <21>, which has a back surface area of preferably 300 cm ² or more and 400 cm ² or less.

<24>
The steam generator according to any one of <1> to <23>, wherein the closed end portion has a breathing hole in a region corresponding to the wearer's mouth.

<25>
The length H of the breathing hole in the vertical direction is preferably 20 mm or more, more preferably 30 mm or more, further preferably 40 mm or more, still more preferably 50 mm or more, from the viewpoint of facilitating breathing. It is more preferably 100 mm or less, more preferably 90 mm or less, further preferably 85 mm or less, still more preferably 80 mm or less, from the viewpoint of suppressing steam leakage. The steam generator according to any one of <1> to <24>, which is more preferable.

<26>
The steam generator according to any one of <1> to <25>, wherein the steam generator generates thermal steam by an oxidation reaction of an oxidizable metal.

<27>
The steam generator according to any one of <1> to <26>, wherein the steam generator preferably contains an oxidizing metal, a carbon component and water.

<28>
The steam generator includes a base material layer, a heat-generating layer laminated on the base material layer, and a water-retaining layer laminated so as to be in contact with at least a part of the heat-generating layer, and the water-retaining layer side of the heat-generating layer. The steam generator according to any one of <1> to <27>, wherein a heat transfer inhibition region that inhibits heat transfer generated from the heat generating layer is formed in a part of the above in the plane direction.

<29>
It is preferable that the steam generator is installed so that the heat transfer inhibition region is located at or near the place where the mask body touches the wearer's face (skin). The steam generator according to item 1.

<30>
For the one or more steam generators, the total amount of steam generated for 10 minutes per unit volume is 1 mg / cm ³ or more and 10 mg / cm ³ or less in any one of <1> to <29>. The steam generator described.

<31>
The one or more water vapor generators are preferably 1 mg / cm ^{3 or more, preferably 2 mg / cm 3} ^from the viewpoint that the total amount of steam generated for 10 minutes per unit volume gives a sufficient feeling of steam. The above is more preferable, 3 mg / cm ³ or more is further preferable, 4 mg / cm ³ or more is further preferable, and an amount that allows the user to easily breathe is preferable and specific. It is preferably 10 mg / cm ³ or less, more preferably 9 mg / cm ³ or less, further preferably 8 mg / cm ³ or less, and even more preferably 7 mg / cm ³ or less. The steam generator according to any one of 1> to <30>.

<32>
From the viewpoint that the total cumulative steam generation amount (10-minute steam generation amount) released in 10 minutes from the start of steam generation in the one or more steam generators efficiently fills the space with steam. It is preferably 160 mg or more, more preferably 800 mg or more, further preferably 1200 mg or more, further preferably 1600 mg or more, keeping a comfortable temperature, and making it easy to breathe. From the viewpoint, any one of <1> to <31>, preferably 2400 mg or less, more preferably 2200 mg or less, further preferably 2000 mg or less, still more preferably 1800 mg or less. The steam generator described in.

<33>
The amount of steam generated from one cell for 10 minutes is preferably 200 mg or more, more preferably 300 mg or more, further preferably 400 mg or more, and 600 mg or less. The steam generator according to any one of <1> to <32>, preferably 550 mg or less, more preferably 500 mg or less, and even more preferably 450 mg or less.

1,1A-1E: Steam generator 2: Mask body 4: Internal space 5: Face-contact side end 5a: Ear-side edge 5b: Jaw-side edge 5c: Holding part joint 6: Closure side end 6a: Brow side joint part 6b: Jaw side joint part 6c: Main joint part 6d: Breathing hole 10A: First panel part 10B: Second panel part 14: Inner surface sheet 16: Outer surface sheet 20: Water vapor generator 27: First sheet 30 : Holding part 31: Ear hook part main body 32: Ear hook hole 39: Seal part 40: Device 41: Measurement room 42: Inflow path 43: Outflow path 44: Inlet thermometer 45: Inlet flow meter 46: Outlet thermometer 47: Outlet flow meter 48: Thermometer R1: Heat transfer inhibition region R1a: Heat transfer inhibitor R2: Non-heat transfer inhibition region

Claims

A steam generator comprising a bottomed cylindrical mask body having an opening at the end on the face-contact side and one or more steam generators capable of generating steam in the internal space of the mask body.
The mask body extends from the face-contacting end to the obstructed end located on the opposite side of the face-contacting end so that the internal space is formed between the mask body and the wearer's face. Has a face and
A steam generator having a circumference of 450 mm or more and 700 mm or less of the opening at the end of the mask body on the face-contact side.
The mask main body includes a first panel portion forming a half peripheral surface of the mask main body and a second panel portion forming the remaining half peripheral surface.
The first panel portion and the second panel portion are formed in a bag shape in which edges 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. The steam generator according to claim 1, which is configured to be deformable into a bottomed cylinder.
The face-contacting end portion is located on the eyebrow side edge portion arranged on the eyebrow side of the wearer and on the chin side of the wearer in the bag-like state in which the first panel portion and the second panel portion are overlapped. The steam generator according to claim 2, wherein the arranged jaw-side edge portion is inclined in a direction away from each other toward the closed-side end portion.
The inclination angle of the jaw side edge is 5 ° or more and 80 ° or less.
The steam generator according to claim 3, wherein the sum of the inclination angle of the brow side edge portion and the inclination angle of the chin side edge portion is 30 ° or more and 160 ° or less.
The closed-side end portion includes an eyebrow-side joint portion that connects the eyebrow-side end portions of the first panel portion and the second panel portion, and a jaw-side end portion of the first panel portion and the second panel portion. The steam generator according to any one of claims 2 to 4, further comprising a jaw-side joint portion for connecting the two.
The steam generator according to any one of claims 1 to 5, further comprising one or more holding portions for holding the mask body in front of the wearer's face.
The mask body is maintained in the shape of a bottomed cylinder, and the volume of the internal space in a state of being attached to a human head model for volume measurement is 150 cm 3 or more and 400 cm 3 or less, any one of claims 1 to 6. The steam generator described in.
The steam generator according to any one of claims 1 to 7, wherein the closed end portion has a breathing hole in a region corresponding to the wearer's mouth.
The steam generator according to any one of claims 1 to 8, wherein the steam generator generates thermal steam by an oxidation reaction of an oxidizable metal.
The invention according to any one of claims 1 to 9, wherein the one or more steam generators have a total steam generation amount of 1 mg / cm 3 or more and 10 mg / cm 3 or less per unit volume for 10 minutes. Steam generator.