JP2022089417A - Steam generator and hyperthermia tool including the same - Google Patents

Abstract

To provide a steam generator that can change a heat quantity transferred to a user depending on a place and has excellent heat storage stability, and to provide a hyperthermia tool including the same.SOLUTION: A steam generator includes: a heat generating layer including an oxidizable metal, electrolyte, and water; and a water retention layer laminated so as to at least partially come into contact with the heat generating layer. A heat transmission inhibitory region R1 for inhibiting transmission of heat generated from the heat generating layer is provided in a part of the heat generating layer in a plane direction on the water retention layer.SELECTED DRAWING: Figure 2

Description

The present invention relates to a steam generator capable of adjusting the heat transferred to the user and a heating device provided with the steam generator.

Conventionally, various water vapor generators utilizing heat generated by the oxidation reaction of an oxidizing metal have been developed. For example, Patent Document 1 describes a heat-generating composition containing an oxidizing metal, water, and a water-retaining agent. A heat-generating part formed by laminating a heat-generating layer and a water-retaining sheet containing a polymer, and a bag body having at least a part of air permeability and accommodating the heat-generating part, and having a long duration. The heating device is disclosed.

Further, Patent Document 2 describes a heating element provided with a flat heating element containing an oxidizing metal, an electrolyte and water, and a water retaining material arranged so as to be in contact with the heating element. When viewed in a plan view, the water retaining material is arranged so as to have two or more areas having different amounts of water that can be retained, and the heating element is provided with two or more regions having different water contents before the start of heat generation, and the rise is quick. The heating element is disclosed.

Japanese Unexamined Patent Publication No. 2013-146554 Japanese Unexamined Patent Publication No. 2017-108855

In recent years, with the increasing consumer needs for heating devices, there is a demand for heating devices that are more comfortable to use because it is not enough to simply stand up and maintain.
However, the steam heater of Patent Document 1 may be partially heated due to the unevenness of the human face, and the heat transfer may be uneven. In the heat generating tool of Patent Document 2, in order to partially adjust the amount of heat and steam, regions having different water contents are unevenly distributed, but the heat generating tools are not unevenly distributed with time, and it is difficult to maintain storage stability.

The present inventors further studied from the viewpoint of solving such a problem, and found that by using a heat transfer inhibitor in a specific part, the temperature, the amount of steam, and the duration of the partial temperature, the amount of steam, and the duration of the unevenness of the face were partially investigated. The present invention was completed by finding that it is excellent in storage stability while maintaining the above.

That is, the present invention is a steam generator including a heat generating layer containing an oxidizing metal, an electrolyte and water, and a water retaining layer laminated so as to be in contact with at least a part of the heat generating layer. The present invention relates to a steam generator provided with a heat transfer inhibition region R1 that inhibits heat transfer generated from the heat generating layer in a part of the water retaining layer side in the plane direction. Further, the heating tool includes a bottomed tubular mask body having an opening at the end on the face contact side and a steam generator capable of generating steam in the internal space of the mask body. The present invention relates to a heating tool which is the steam generator and is arranged so that the heat transfer inhibition region R1 is located at a portion of the mask body in contact with the skin of the user and in the vicinity thereof.

The steam generator and the heating tool according to the present invention can have different amounts of heat transferred to the user depending on the location, and are excellent in storage stability.

It is a plan view of the steam generator which concerns on this embodiment. FIG. 3 is a cross-sectional view taken along the line I-I'of FIG. It is a plan view of the steam generator which concerns on other embodiment. It is a plan view of the steam generator which concerns on other embodiment. It is a plan view of the steam generator which concerns on other embodiment. It is a plan view of the steam generator which concerns on other embodiment. It is a plan view of the steam generator which concerns on other embodiment. It is a plan view of the steam generator which concerns on other embodiment. It is a plan view of the steam generator which concerns on other embodiment. It is a perspective view which shows the heating tool which concerns on this embodiment. It is a left side figure which shows the folded state of the heating tool which concerns on this embodiment. It is a figure which shows the state which expanded the face contact side end part of the heating tool which concerns on this embodiment. It is a figure which shows the state which the holding part is folded. 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 schematic diagram which shows the apparatus which measures the amount of water vapor generation.

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.

As shown in FIGS. 1 and 2, the steam generator 20 according to the present embodiment is a rectangular flat body, and has a base material layer 11, a heat generating layer 12 laminated on the base material layer 11, and heat generation. A water-retaining layer 15 laminated so as to be in contact with at least a part of the layer 12 is provided, and heat transfer that inhibits heat transfer generated from the heat-generating layer 12 is provided to a part of the heat-generating layer 12 in the plane direction on the water-retaining layer 15 side. Inhibition region R1 is formed. As shown in FIGS. 1 and 2, the water vapor generator 20 is sandwiched between the first sheet 21 on the water retention layer 15 side and the second sheet 22 on the base material layer 11 side, and the peripheral edges of the two sheets are joined. By being done, it is in a state of being enclosed in a closed space.

(Base layer)
As the steam generator 20 according to the present embodiment, a non-breathable or non-breathable sheet can be used as the base material layer 11. Poor air permeability means that the air permeability is 30,000 seconds / 100 mL or more, and non-breathability means that the air permeability is 80,000 seconds / 100 mL or more. The air permeability is a value measured according to JIS P8117 (2009 revised edition), and is defined as the time for 100 mL of air to pass through an area of 6.42 cm ² under a constant pressure. To.

The air permeability of the base material layer 11 is preferably 50,000 seconds / 100 mL or more, and more preferably 80,000 seconds / 100 mL or more. By using such a base material layer 11, the generated water vapor is efficiently released from the water retention layer 15 side. As the base material layer 11, a synthetic resin film can be specifically used, and examples thereof include a polyethylene film and a polyethylene terephthalate film. The synthetic resin film may be a single layer or a laminated body having a plurality of layers. Nonwoven fabric, paper or film or a laminate of two or more of these can be used.

(Heating layer)
In the steam generator 20 according to the present embodiment, the heat generating layer 12 is a coating sheet coated with a slurry-like heat generating composition containing an oxidizing metal, an electrolyte, and water. When the heating layer 12 comes into contact with air, heat is generated by the oxidation reaction of the metal to be oxidized, whereby water is heated to become water vapor. In this way, water vapor can be obtained by a simple method. The heat-generating layer 12 is formed by applying a slurry-like heat-generating composition prepared by blending a predetermined component to the surface of the base material layer 11 to form a composition layer, and then sodium chloride as a reaction accelerator. Etc. can be sprayed to produce. The heat generating layer 12 may contain a carbon component.

When the metal to be oxidized is a powder, the average particle size of the powder is preferably 0.1 μm or more, more preferably 10 μm or more, and further preferably 20 μm or more. The average particle size is preferably 300 μm or less, more preferably 300 μm or less, and even more preferably 200 μm or less. The particle size of the metal to be oxidized refers to the maximum length in the form of powder, and can be measured by classification by a sieve, dynamic light scattering method, laser diffraction / scattering method, or the like. By using an oxidizable metal having an average particle size in a predetermined range, an efficient oxidation reaction and good coatability can be achieved. The oxidizable metal contained in the heat generating layer 12 is a metal that generates heat by an oxidation reaction, and can be selected from, for example, iron, aluminum, zinc, manganese, magnesium, and calcium. The metal to be oxidized may be either powder or fiber. Among these, iron powder is preferable because it is excellent in handleability, safety, storage stability and stability, and the manufacturing cost is low. Examples of the iron powder include reduced iron powder and atomized iron powder. The iron powder may be used alone or in combination of two or more.

The electrolyte contained in the heating layer 12 increases the reaction efficiency of the metal to be oxidized and promotes the reaction that sustains the oxidation reaction. Examples of the electrolyte include one or more selected from alkali metals, sulfates of alkaline earth metals, and chlorides. Among them, it is selected from various chlorides such as sodium chloride, potassium chloride, calcium chloride, magnesium chloride, first iron chloride, second iron chloride, and sodium sulfate because of their excellent conductivity, chemical stability, and production cost. It is preferable to use one kind or two or more kinds. By using an electrolyte, the oxide film of the metal to be oxidized can be destroyed and the oxidation reaction can be promoted.

The water contained in the heat generating layer 12 is not particularly limited. The water can be derived from an aqueous electrolyte solution (for example, an aqueous solution of an alkali metal, an alkaline earth metal, etc.), or water alone may be added to the heat generating layer 12.

(Water retention layer)
In the steam generator 20 according to the present embodiment, as shown in FIG. 2, the water retention layer 15 is laminated so that at least a part thereof is in contact with the heat generating layer 12. The water retention layer 15 has a first water retention layer 14 containing a first water retention agent and a second water retention layer 16 containing a second water retention agent. Specifically, the first water-retaining layer 14 is laminated so as to be in contact with the heat-generating layer 12 over the entire plane direction of the heat-generating layer 12, and the second water-retaining layer 16 is the first water-retaining layer 14. It is laminated over the entire plane direction of. It should be noted that, as used herein, "stacked" does not have to be a completely separate and separate layer. For example, a part of the first water retaining agent constituting the first water retaining layer 14 may be mixed in the heat generating layer 12.

The first water-retaining layer 14 is a layer formed by spraying the first water-retaining agent on the heat-generating layer 12. Since the first water-retaining layer 14 is directly laminated on the heat-generating layer 12 in this way, the excess water in the heat-generating layer 12 can be efficiently absorbed and maintained at an appropriate amount of water. In the present specification, the water-retaining agent has a water-retaining ability (water-absorbing action or water-removing action), and is selected from, for example, a carbon component, a fiber material, and a water-absorbing powder. The water retention agent can be used alone or in combination of two or more.

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.

As the fiber material, it is more preferable to use hydrophilic fibers, especially cellulose fibers. As the cellulose fiber, a chemical fiber (synthetic fiber) or a natural fiber can be used.

Examples of the water-absorbent powder include one or more selected from vermiculite, sawdust, silica gel, pulp powder, and water-absorbent polymer.

Examples of the water-absorbent polymer include a hydrophilic polymer having a crosslinked structure capable of absorbing and retaining a liquid having a weight of 20 times or more its own weight. The shape of the water-absorbent polymer may be spherical, lumpy, botryoidal, or fibrous. In the following, a water-absorbent polymer will be described as an example as a water-absorbing agent.

The mass average particle size of the water-absorbent polymer (hereinafter referred to as the first water-absorbent polymer) used for forming the first water-retaining layer 14 is preferably 1 μm or more, more preferably 10 μm or more, and more preferably 100 μm. The above is more preferable. The average particle size of the first water-absorbent polymer is preferably 1000 μm or less, more preferably 700 μm or less, and even more preferably 500 μm or less. The particle size of the first water-absorbent polymer is measured by a laser diffraction method or the like.

Specific examples of the first water-absorbent polymer include, for example, starch, crosslinked carboxylmethylated cellulose, acrylic acid or a polymer or copolymer of an alkali metal salt of acrylic acid, polyacrylic acid and its salt, and polyacrylic acid salt. One or more selected from the group consisting of graft polymers may be mentioned. Among these, since it is easy to maintain the amount of carried water in a specific range, polyacrylic acid and salts thereof, such as polymers or copolymers of acrylic acid or alkali metal salts of acrylic acid, and polyacrylic acid salts. A graft polymer is preferred.

The second water retention layer 16 contains a second water retention agent and is laminated on the first water retention layer 14. Specifically, the second water-retaining layer 16 has two water-absorbing sheets (not shown), and the second water-retaining agent is arranged between these two water-absorbing sheets. The second water-retaining layer 16 sucks water from the heat-generating layer 12 and the first water-retaining layer 14.

Examples of the second water-retaining agent include carbon components and the like as in the above-mentioned example of the first water-retaining agent. As the second water retention agent, one or more selected from vermiculite, sawdust, silica gel and pulp powder may be used. As the water-absorbent polymer used for the second water-retaining agent, the same one as the first water-absorbent polymer can be used. As the water-absorbing sheet, a hydrophilic fiber sheet, particularly a cellulose fiber sheet is preferable. As the cellulose fiber, either a chemical fiber (synthetic fiber) or a natural fiber may be used.

As described above, as the water retention layer 15, the one having the first water retention layer 14 and the second water retention layer 16 has been described, but the present invention is not limited to this, and for example, the second water retention layer 16 is provided. Instead, only the first water retention layer 14 may be provided, and in this case, it is preferable to form the heat transfer inhibition region R1 on the first water retention layer 14. Further, the first water retention layer 14 may not be provided and only the second water retention layer 16 may be provided. In this case, it is preferable to form the heat transfer inhibition region R1 on the second water retention layer 16.

(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, and the heat transfer inhibitor R1a is shown in FIGS. 1 and 1. As shown in 2, the heat-generating layer 12 between the first water-retaining layer 14 and the second water-retaining layer 16 is laminated in the right half region in the plane direction. On the other hand, the non-heat transfer inhibition region R2, which is a region (left half region) that is not the heat transfer inhibition region R1 in the plane direction on the water retention layer 15 side of the heat generation layer 12, is a second water retention layer on the first water retention layer 14. 16 are directly laminated. Here, the “heat transfer inhibition region” in the present specification means a region that inhibits heat transfer transmitted to the water retention layer 15 side.

The area ratio of the non-heat transfer inhibition region R2 with respect to the entire plane direction of the heat generating layer 12 is preferably 15% or more, more preferably 18% or more, and more preferably 22%, from the viewpoint of efficiently applying steam heat. The above is more preferable, 25% or more is particularly preferable, and 60% or less is preferable, and 55% or less is preferable from the viewpoint of appropriately raising the temperature while applying a large amount of steam. It is more preferably 50% or less, and even more preferably 45% or less. In the present embodiment, the area ratio of the non-heat transfer inhibitory region R2 with respect to the entire plane direction of the heat generating layer 12 is 50%.

In the present embodiment, a hot melt is used as the heat transfer inhibitor R1a. The hot melt is applied to the entire area of the heat transfer inhibition region R1. Examples of the hot melt include HM-Dispomelt ME716E (manufactured by Henkel Co., Ltd.).

The area ratio of the heat transfer inhibitor R1a with respect to the entire plane direction of the heat generating layer 12 is preferably 45% or more, preferably 48% or more, from the viewpoint of appropriately raising the temperature while applying a large amount of steam. It is more preferably 52% or more, further preferably 55% or more, and from the viewpoint of efficiently imparting steam heat, it is preferably 80% or less, and 77% or less. It is more preferably 73% or less, still more preferably 70% or less.

In the present embodiment, the area ratio of the heat transfer inhibitor R1a with respect to the entire plane direction of the heat transfer inhibitory region R1 is set to 100%, but the heat transfer is transmitted from the heat generating layer 12 by adjusting the area ratio of the heat transfer inhibitor R1a. The amount of heat can be adjusted. As a method of adjusting the area ratio of the heat transfer inhibitor R1a with respect to the heat transfer inhibitory region R1, for example, as shown in FIG. 3, the heat transfer inhibitor R1a is spread from one end to the other end of the heat transfer inhibitory region R1 in the vertical direction. It may be a plurality of strips formed in a strip shape. The number of strips may be two or more. In the present embodiment, three strips are provided with a predetermined interval R1b in the width direction. In this case, the width of the heat transfer inhibitor R1a is preferably 2 mm or more and 15 mm or less, and the predetermined interval R1b is preferably 0.5 mm or more and 5 mm or less. The width of each strip and the spacing R1b do not have to be uniform. Further, the heat transfer inhibitor R1a may be applied in a dot shape in the heat transfer inhibition region R1 as shown in FIG. 4, and the heat transfer inhibitor R1a may be applied in a dot shape in the heat transfer inhibition region R1 in the lateral direction (FIG. 3). It may be applied in a band shape extending in a direction orthogonal to the band-shaped body), or as shown in FIG. 6, it may be applied with a diagonal band-shaped interval R1b from the upper right to the lower left in the heat transfer inhibition region R1. , As shown in FIG. 7, the heat transfer inhibition region R1 may be coated with a grid-like interval R1b at intervals, and as shown in FIG. 8, the heat transfer inhibition region R1 may be applied at a part of both ends in the width direction. As shown in FIG. 9, the heat transfer inhibition region R1 may be coated with a square block-shaped interval R1b having the same shape in the vertical and horizontal directions.

In the present embodiment, the area ratio of the heat transfer inhibitor R1a with respect to the entire plane direction of the heat transfer inhibitory region R1 is preferably 70% or more, more preferably 80% or more, from the viewpoint of preventing the supply of oxygen. It is preferably 85% or more, more preferably 90% or more, and from the viewpoint of appropriately raising the temperature, it is preferably 100% or less, and preferably 98% or less. It is more preferably 97% or less, still more preferably 96% or less.

Further, in the above-described embodiment, hot melt is used as the heat transfer inhibitor R1a, but the present invention is not limited to this, and a non-ventilated sheet may be laminated as the heat transfer inhibitor R1a in the heat transfer inhibitory region R1. .. The non-ventilated sheet means a sheet having an air permeability of 80,000 seconds / 100 mL or more. The air permeability is a value measured according to JIS P8117 (2009 revised edition), and is defined as the time for 100 mL of air to pass through an area of 6.42 cm ² under a constant pressure. To. If the above conditions are taken into consideration, for example, artificial fibers such as polyamide, vinylon, polyester, rayon, acetate, acrylic resin, polyethylene, polypropylene and polyvinyl chloride, pulp, cotton, linen, silk and animal hair, etc. A breathable sheet such as a woven fabric, a non-woven fabric, a paper, or a synthetic paper in which one kind or two or more kinds selected from the natural fibers of the above is mixed may be laminated. The breathable sheet is a sheet that may be breathable and can adjust the amount of heat to be inhibited by adjusting the thickness and the number of laminated sheets. Above all, a thin one is preferable in order to suppress the thickness. Further, for example, a porous sheet made of synthetic resin having moisture permeability and breathability but not water permeability is suitable, for example, a calcium carbonate-containing polyethylene film (trade name: TSF-EU, manufactured by Kohjin Co., Ltd.). Etc. can be used. Further, a synthetic resin that can be easily applied and becomes liquid at 80 ° C. to 120 ° C. is preferable because of ease of production, and hot melt is particularly preferable from the viewpoint of price.

(1st sheet and 2nd sheet)
As the first sheet 21, for example, a porous sheet made of a synthetic resin having moisture permeability but not water permeability is suitable. Specific examples thereof include a film obtained by containing calcium carbonate or the like in polyethylene or polypropylene and stretching the film. When such a porous sheet is used, a non-woven fabric may be laminated on the outer surface of the porous sheet to enhance the texture of the first sheet 21. Examples of the nonwoven fabric include needle punched nonwoven fabrics, air-through nonwoven fabrics, spunbonded nonwoven fabrics and the like. A sheet that does not allow water to pass through but allows oxygen and water vapor to pass through, and may be a sheet other than a porous sheet as long as leakage resistance is taken into consideration. For example, one or 2 selected from artificial fibers such as polyamide, vinylon, polyester, rayon, acetate, acrylic resin, polyethylene, polypropylene and polyvinyl chloride, and natural fibers such as pulp, cotton, linen, silk and animal hair. A woven fabric, non-woven fabric, paper, synthetic paper or the like mixed with seeds or more can be used as the first sheet 21.

As long as the second sheet 22 is a sheet having low air permeability as a whole, a part thereof may have air permeability. By doing so, water vapor can be efficiently discharged from the first sheet 21 side. Specifically, the synthetic resin film can be used alone or in a plurality of layers to form the second sheet 22. The texture of the second sheet 22 can be enhanced by laminating a non-woven fabric or the like on the outer surface depending on the intended use. The nonwoven fabric can be selected from needle punched nonwoven fabrics, air-through nonwoven fabrics, spunbonded nonwoven fabrics and the like, but a laminated film composed of a polyethylene film and a pulp sheet is preferable.

The water vapor generator 20 according to the present invention may contain, for example, the fragrance component described in "Synthetic Perfume Chemistry and Commercial Knowledge" (written by The Chemical Daily, Inc.) 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.

Further, the planar shape of the steam generator 20 according to the present invention 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 heating tool 100, preferably in the panel, and more preferably in both the left and right panels. In this embodiment, a total of four steam generators 20 are installed, two on each of the left and right panels. When a plurality of steam generators 20 are installed, the heat generation characteristics of the plurality of steam generators 20 may be the same or different, but it is more preferable that they are the same.

As described above, the steam generator 20 according to the present embodiment is provided with a heat transfer inhibition region R1 that inhibits heat transfer generated from the heat generation layer 12 in a part of the heat generation layer 12 in the plane direction on the water retention layer 15 side. As a result, the amount of heat transferred to the water retention layer 15 side can be made different between the heat transfer inhibition region R1 and the non-heat transfer inhibition region R2, and the storage stability can be further improved.

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 each of the above embodiments.

<Heat equipment>
Next, an embodiment in which the steam generator 20 according to the present invention is used as a heating tool will be described. When the steam generator 20 according to the present invention is used for a heating tool, the heat transfer inhibition region R1 is located at or near a place where the heating device touches the skin of the user.

(Overall composition of the heater)
The heating device 100 according to the present embodiment is a face mask type heating device capable of covering the entire face of the wearer, and as shown in FIG. 10, one end portion (face contact side end portion 105) is provided. A bottomed tubular mask body 102 having an opening and a steam generator 20 capable of generating steam in the internal space 104 of the mask body 102 are provided. Further, the heating tool 100 according to the present embodiment further includes a holding portion 130 for holding the mask main body 102 in front of the wearer's face.

In addition, in this specification, "covering the whole 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 in which the first panel portion 110A and the second panel portion 110B, which will be described later, are overlapped with each other in a folded state is referred to as a “bag shape”, and the opening of the face-contact side end portion 105, 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 main body 102 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 105" and is located on the opposite side of the face contact side end portion 105. The end on the closed side (bottom side) is referred to as "closed end 106". Further, the upper side of the mask body 102 arranged so that the "face contact side end portion 105" and the "closed side end portion 106" are aligned in the left-right direction when viewed from a plane direction (that is, the state of FIG. 11) 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 102 according to this 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 110B described later via the closed-side end portion 106 from the face-contact side end portion 105 of the first panel portion 110A described later. The direction leading to the portion 105, and "both ends in the width direction of the mask body" mean the face-contact side end portion 105 of the first panel portion 110A and the face-contact side end portion 105 of the second panel portion 110B.

(Structure of mask body)
As shown in FIG. 10, the mask main body 102 has a peripheral surface extending from the face-contact side end portion 105 toward the closed-side end portion 106, and the peripheral surface allows the mask body 102 to be in contact with the wearer's face when worn. The internal space 104 is configured to be formed between them. That is, when the mask body 102 is worn, the peripheral surface of the face-contact side end 105 and its vicinity comes into contact with the wearer's face (skin), while the other regions of the peripheral surface and the closed-side end 106 are present. It is configured to form an internal space 104 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 102 includes a first panel portion 110A forming a half peripheral surface of the mask main body 102, and a second panel portion 110B forming the remaining half peripheral surface. The first panel portion 110A and the second panel portion 110B are each made of a sheet-like member having the same shape and size, and as shown in FIG. 11, the edges excluding the face-contact side end portion 105 and the breathing hole 106d described later are mutual. By being combined, it is formed in a bag shape.

As shown in FIG. 12, the first panel portion 110A and the second panel portion 110B are configured to be deformable into a bottomed cylinder shape by widening the opening of the face contact side end portion 105. The mask main body 102 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 tubular shape, and has a width with the vertical center line as a boundary. One side in the direction constitutes the first panel portion 110A, and the other side in the width direction constitutes the second panel portion 110B.

As shown in FIGS. 10 and 12, the mask main body 102 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 105. It has a tapered shape that converges toward the end portion 106, and the closed side end portion 106 constitutes the vertical center line. However, the present invention is not limited to this, and the closed side end portion 106 may have a flat bottom portion. As shown in FIG. 12, the face-contacting end 105 of the mask body 102 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.

The internal space 104 formed between the mask body 102 and the user's face is not limited to the closed space formed by the mask body 102 coming into contact with the user's face, but the mask body 102 and the user's face. It may have a slight gap between the two. The slight gap here means a gap that can be generated when the steam generator 100 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 102. It is possible to treat it as if it were.

Hereinafter, in the description of the present embodiment, the first panel portion 110A and the second panel portion 110B will be described as being formed by one sheet having a multilayer structure. Specifically, as shown in FIG. 10, the first panel portion 110A and the second panel portion 110B each have an inner surface sheet 114 that forms an inner surface when it becomes three-dimensional, and a third panel portion 110B when it becomes three-dimensional. It includes an outer surface sheet 116 that forms an outer surface. The inner surface sheet 114 and the outer surface sheet 116 are formed to have the same shape and size, and are a single sheet having a multilayer structure in which the inner surface sheet 114 and the outer surface sheet 116 are laminated. As described above, instead of mechanically connecting the first panel portion 110A and the second panel portion 110B, each of which is composed of one sheet, the first panel portion 110A and the second panel portion 110B are used from the beginning. It may be configured to form one sheet as a unit.

In the mask main body 102 according to the present embodiment, the steam generator 20 is arranged between the inner surface sheet 114 and the outer surface sheet 116. 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 main body 102 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 the 102. Further, by locally non-adhering the outer surface sheet 116 and the inner surface sheet 114, 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 116 and the inner surface sheet 114. Is also good.

In the mask main body 102 according to the present embodiment, the steam generator 20 is arranged so that the heat transfer inhibition region R1 of the steam generator 20 is located on the holding portion 130 side. In this way, by arranging the heat transfer inhibition region R1 at the position in contact with the user's skin and in the vicinity thereof among the places where the steam generator 20 of the mask main body 102 is provided, the non-heat transfer inhibition region R2 can be used. Even if the amount of heat generated is increased, heat is transferred to the user's skin via the heat transfer inhibitor in the heat transfer inhibition region R1, so that the heat is not transferred too much to the user's skin, causing discomfort. ..

Before use, the mask main body 102 having the above configuration is flattened by folding the first panel portion 110A and the second panel portion 110B in half along the vertical center line (closed side end portion 106). It is folded. In this state, the holding portion 130 can be made compact by folding and storing the holding portion 130 inside the mask main body 102 (see FIG. 13) as described later. On the other hand, the mask main body 102 is opened from the edge portion (face contact side end portion 105) opposite to the vertical center line (closed side end portion 106) at the time of use, and the inner surface on which the mask main body 102 is folded is formed. It is worn so that it faces the wearer's side. That is, when the mask body 102 is used, the face-contact side end portion 105 of the first panel portion 110A and the face-contact side end portion 105 of the second panel portion 110B are separated from each other, so that the mask main body 102 is closed on the vertical center line. The end portion 106 projects forward of the mask body 102 to form a hollow shape-retaining three-dimensional shape. In the mask body 102 formed in such a three-dimensional shape, the opening of the expanded face-contact side end 105 is in close contact with the wearer's face, so that between the wearer's face and the mask body 102. There is an advantage that gaps are less likely to occur.

(Structure of holding part)
The holding portion 130 is joined to both ends in the width direction of the mask main body 102, and holds the mask main body 102 on the wearer's face. Hereinafter, an example of the holding unit 130 will be described.

In the present embodiment, the holding portions 130 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 102 in the longitudinal direction (horizontal width direction). As shown in FIG. 11, the holding portion 130 is a seal portion 139 that joins the ear hook portion main body 131, the ear hook hole 132 through which the wearer's ear can be inserted, and the mask main body 102 and the ear hook main body 131 (FIG. 11). 13) and. A rubber string or the like may be used as the holding portion 130.

(How to use the heater)
Next, a method of using the heating tool 100 according to the present embodiment will be described. In the present embodiment, since the steam generator 20 is integrated with the mask main body 102, the entire heating tool 100 is stored in a state of being enclosed in an oxygen blocking bag. In this storage state, the mask main body 102 is folded around the vertical center line in a state where the holding portion 130 is folded inward.

First, the wearer opens the packaging bag at the time of wearing and takes out the heating device 100 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 taking out the heating tool 100 from the oxygen blocking bag, the wearer opens the mask main body 102 folded in half from the face-contact side end portion 105 side, and takes out a pair of holding portions 130 from the inside of the mask main body 102. Then, as shown in FIG. 14, the holding portion 130 is pulled with a finger while the mask body 102 is in contact with the face, and the ear is inserted into the ear hook hole 132. By hooking the pair of holding portions 130 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 102 as shown in FIG. The main body 102 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 102 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 released into the internal space 104 of the mask body 102 and supplied to the wearer's face. When the steam generator 20 is incense, the aroma component is sucked by the wearer together with the steam. As described above, according to the heating tool 100 according to the present embodiment, the heating 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.

According to the heating tool 100 having such a configuration, it can be used as a three-dimensional face mask that covers the entire face, and steam generated by the steam generator 20 is formed in front of the face. The internal space 104 can be filled and steam can be evenly supplied to the entire face. Therefore, the heating tool 100 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 relaxation. It has the remarkable advantage of being able to obtain an 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.

Next, examples of the present invention will be described, but the present invention is not limited thereto.

<Preparation of steam generator>
(Example 1)
The steam generator 20 according to Example 1 was produced according to the following procedure. First, xanthan gum as a thickener was dissolved in water, and then tripotassium phosphate was dissolved to prepare an aqueous solution. On the other hand, iron powder, activated carbon, potassium hydroxide, and water were premixed to prepare a slurry. A premixed slurry was added to the aqueous solution and stirred with a disc turbine type stirring blade at 150 rpm for 10 minutes to obtain a slurry-like heat-generating composition. As the base material layer 11, polyethylene laminated crepe paper (basis weight 97 g / m ² , manufactured by Daishowa Paper Industry Co., Ltd.) was prepared. A heat-generating composition was applied to a region of 24.0 cm ² (4.9 cm × 4.9 cm) of the pulp surface of the base material layer 11 to form a composition layer. The mass of the exothermic composition used was 4.0 g. On the surface (24.0 cm ² ) of the composition layer, 0.125 g of salt (sodium chloride (manufactured by Otsuka Pharmaceutical Co., Ltd.)) was sprayed to form a heat generating layer 12.

Next, a water-absorbent polymer (sodium polyacrylate, spherical shape, average particle diameter 300 μm, Sunfresh ST-500D *, manufactured by Sanyo Chemical Industries, Ltd.) was directly sprayed on the heat generating layer 12 (the basis weight of each production example is (According to Table 1), a first water-retaining layer 14 containing the first water-absorbing agent was formed on the heat-generating layer 12.

Next, a polymer sheet (PS) was prepared as the second water retention layer 16. The polymer sheets are wood pulp paper (weighing 30 g / m ² , manufactured by Ino Paper Co., Ltd.) as the first water-absorbent sheet and the second water-absorbent polymer (sodium polyacrylate, spherical, average particle size 300 μm, aqua). A second water-absorbing layer containing Rick CA (manufactured by Nippon Catalyst Co., Ltd.) and a wood pulp paper (weighing 20 g / m ² , manufactured by Ino Paper Co., Ltd.) as the second water-absorbing sheet 19 are laminated. It is an integrated product.

Next, a hot melt (ME716E) was prepared as the heat transfer inhibitor R1a, and the hot melt was applied to a part of the second water retention layer 16 in the plane direction (from the right end to the center of the water vapor generator). The three strips were laminated with a predetermined interval R1b in the width direction to form a heat transfer inhibition region R1. Table 1 shows the widths of the non-heat transfer inhibitory region R2, the heat transfer inhibitor R1a, and the interval R1b thereof. The hot melt layer of the second water retention layer 16 was laminated on the first water retention layer 14 so as to face the first water retention layer 14.

Next, the first sheet 21 and the second sheet 22 were arranged above and below the laminated body, and the peripheral edges of the two sheets were sealed to form a steam generator 20, respectively. The first sheet 21 used here is "BRN-502" manufactured by Nitoms Co., Ltd. (air permeability 100 seconds / 100 mL or less), and the second sheet 22 is "LF-KIPE71" manufactured by Kakukei Co., Ltd. (non-). Breathability, basis weight 71 g / m ² ).

Area ratio of non-heat transfer inhibition region R2 with respect to the entire plane direction of the heat generating layer 12 of Example 1, heat transfer inhibition region R1, laminated area of heat transfer inhibitor R1a, basis weight of heat transfer inhibitor R1a, non-heat transfer inhibition The area R2, the width of the heat transfer inhibitor, and the interval R1b are shown in Table 1.

(Example 2)
Example 1 except that the number of strips composed of heat transfer inhibitors was set to 2 and the area ratio of the non-heat transfer inhibitory region R2 with respect to the entire plane direction of the heat generating layer 12 was changed from Example 1. Example 2 was prepared in the same manner.

(Example 3)
Similar to Example 1, the number of strips composed of heat transfer inhibitors was set to 3, and the area ratio of the non-heat transfer inhibitory region R2 with respect to the entire plane direction of the heat generating layer 12 was changed from that of Example 1. Made Example 3 in the same manner as in Example 1.

(Examples 4 and 5)
The basis weight of the heat transfer inhibitor R1a is lowered, the band is not formed by the heat transfer inhibitor R1a, the heat transfer inhibitor R1a is applied to the entire area of the heat transfer inhibitory region R1, and the heat transfer inhibitor R1a is applied to the entire area of the heat generation layer 12 in the plane direction. Examples 4 and 5 were produced in the same manner as in Example 1 except that the area ratio of the transmission inhibition region R2 was changed from that of Example 1.

(Examples 6 and 7)
The number of strips composed of heat transfer inhibitors was four, one of which was provided at the left end, the remaining three were provided on the right side at intervals as the non-heat transfer inhibitory region R2. Examples 6 and 7 were produced in the same manner as in Example 1 except that the area ratio of the non-heat transfer inhibitory region R2 with respect to the entire plane direction of the heat generating layer 12 was changed from that of Example 1.

(Example 8)
The number of strips composed of heat transfer inhibitors was three, one of which was provided at the left end, the remaining two were provided on the right side at intervals as the non-heat transfer inhibitory region R2. In addition, Example 8 was produced in the same manner as in Example 1 except that the area ratio of the non-heat transfer inhibitory region R2 with respect to the entire plane direction of the heat generating layer 12 was changed from that of Example 1.

(Comparative example)
Comparative Example 1 was prepared in the same manner as in Example 1 except that the heat transfer inhibitor R1a was not applied, except that the heat transfer inhibitor R1a was applied to the entire plane direction of the first water retention layer 14. Comparative Example 2 was prepared in the same manner as in Examples.

<Amount of water vapor generated>
Next, with respect to the steam generators 20 according to Examples 1 to 8 and Comparative Examples 1 and 2, the amount of steam generated was measured by the following method using the measuring device 40 shown in FIG. That is, the measuring device 40 has an aluminum measuring chamber (volume 4.2 L) 41, an inflow path 42 for inflowing dehumidified air (humidity less than 2%, flow rate 2.1 L / min) into the lower part of the measuring chamber 41, and a measuring chamber. Outflow path 43 for flowing air from the upper part of 41, inlet thermometer 44 and inlet thermometer 45 provided in the inflow path 42, outlet thermometer 46 and outlet flow meter 47 provided in the outflow channel 43, measurement room. A thermometer (thermista) 48 provided in the 41 is provided. As the thermometer 48, one having a temperature resolution of about 0.01 ° C. was used. 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. 16, that is, the time point 5 seconds after the start of opening, is defined as the "starting point of heat generation".

The water vapor generator 20 was taken out of the oxygen blocking bag at a measurement environment temperature of 30 ° C. (30 ± 1 ° C.) and placed in the measurement chamber 41 with the surface (water vapor release surface) located on the skin side facing upward. A thermometer 48 equipped with a metal ball (4.5 g) was placed on the water vapor release surface, and the temperature of the water vapor release surface was measured. Further, in this state, dehumidified air was flowed from the lower part of the measuring chamber 41, and the measurement was performed with the inlet thermo-hygrometer 44 and the outlet thermo-hygrometer 46. From the obtained temperature and humidity, the difference in absolute humidity before and after the air flowed into the measuring chamber 41 was obtained. Further, the amount of water vapor released by the water vapor generator was calculated from the flow rates measured by the inlet flow meter 45 and the outlet flow meter 47. The amount of steam generated refers to the total amount of steam measured up to 10 minutes after the "starting point of heat generation" of the steam generator 20 as a starting point. The amount of water vapor generated is preferably 40 mg or more and 600 mg or less, and preferably 300 mg or more and 500 mg or less.

<Inhibition of heat transfer>
The water vapor generators 20 according to Examples 1 to 8 and Comparative Examples 1 and 2 were measured using a measuring device according to JIS S4100 in order to confirm the inhibitory property of heat transfer. At the time of measurement, the second sheet side 22 of the steam generator 20 was attached to the measurement surface. When the heat transfer inhibitor R1a and the interval R1b coexist in the heat transfer inhibitory region R1, both regions were placed on the measuring device across the heat transfer inhibitor R1a and the interval R1b, and the numerical values were measured. In this measurement, the time axis was plotted on the horizontal axis and the temperature was plotted on the vertical axis. From the plotted results, the maximum temperature, temperature rise time, and duration of each of the heat transfer inhibition region R1 and the non-heat transfer inhibition region R2 were determined. Specifically, the maximum temperature is the highest temperature (° C) from the start of measurement to the end of measurement, and the temperature rise time is the time required to reach 35 ° C to 45 ° C from the start of measurement. The duration was (minutes), and the duration was 45 ° C. or higher.

The results obtained are shown in Table 1. In the water vapor generator 20 according to Examples 1 to 8, the maximum temperature of the heat transfer inhibition region R1 is lower than that of the non-heat transfer inhibition region R2, and the temperature rise time to a predetermined temperature is also in the non-heat transfer inhibition region R2. Since it is relatively slow, for example, by locating the heat transfer inhibition region R1 in contact with the user's skin or in the vicinity thereof, even if the amount of heat generated from the non-heat transfer inhibition region R2 is increased, the heat transfer inhibition region R2 is applied to the user's skin. Since the amount of heat transferred can be suppressed, it does not cause discomfort to the user.

＊１：２段の場合、上段は、Ｒ２の幅、下段は、Ｒ１ａとＲ１ｂの幅を交互に記載。３段の場合、上段は、左端のＲ１ａの幅、中段は、Ｒ２の幅、下段は、右側のＲ１ａとＲ１ｂの幅を交互に記載

* 1: In the case of two stages, the width of R2 is described in the upper row, and the widths of R1a and R1b are described alternately in the lower row. In the case of three stages, the upper row describes the width of R1a at the left end, the middle row describes the width of R2, and the lower row describes the widths of R1a and R1b on the right side alternately.

Next, the water vapor generator according to Example 6 was left to stand for 2 months under the condition of 50 ° C., and the storage stability was tested by measuring the maximum temperature, the temperature rise time, and the duration after 2 months. .. The obtained results are shown in Table 2 below.

As shown in Table 3, the same results as those before 2 months can be obtained even after 2 months have passed, so that it can be seen that the steam generator according to Example 6 is excellent in storage stability. ..

12 ... Heat generation layer 15 ... Water retention layer 20 ... Water vapor generator R1 ... Heat transfer inhibition region R2 ... Non-heat transfer inhibition region R1a ... Heat transfer inhibitor 100 ... Thermal equipment 102 ... Mask body 104 ... Internal space

Claims (6)

A steam generator comprising a heating layer containing an oxidizable metal, an electrolyte and water, and a water retaining layer laminated so as to be in contact with at least a part of the heating layer.
A steam generator provided with a heat transfer inhibition region R1 that inhibits heat transfer generated from the heat generation layer in a part of the heat generation layer in the plane direction on the water retention layer side. The steam generator according to claim 1, wherein the area ratio of the non-heat transfer inhibition region R2 that does not inhibit the heat transfer generated from the heat generation layer with respect to the entire plane direction of the heat generation layer is 15% or more and 60% or less. The heat transfer inhibitory region R1 has a heat transfer inhibitor that inhibits heat transfer.
The water vapor generator according to claim 1 or 2, wherein the area ratio of the heat transfer inhibitor in the heat transfer inhibitory region R1 is 70% or more and 100% or less. The heat transfer inhibitor is composed of two or more strips formed in a band shape from one end to the other end of the heat transfer inhibition region R1, and the strips are arranged at predetermined intervals in the width direction. The steam generator according to claim 3. The water vapor generator according to claim 4, wherein the width of the heat transfer inhibitor is 2 mm or more and 15 mm or less. A heating tool including a bottomed cylindrical mask body having an opening at the end on the face-contact side and a steam generator capable of generating steam in the internal space of the mask body.
The steam generator is the steam generator according to any one of claims 1 to 5, and is arranged so that the heat transfer inhibition region R1 is located at or near a portion of the mask body in contact with the skin of the user. The heating equipment that is.

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