KR20200125684A - Warmer - Google Patents

Abstract

The heating appliance 50 is a heating element including a heat generating portion 10 containing an oxidizable metal, a carbon component, and water, and a receiving portion 10 containing the heat generating portion 10 and having an air permeable container 20 on at least one surface. (100) is provided, and the following conditions are satisfied. Conditions: When the temperature is measured in an environment at room temperature of 20°C and humidity of 50%, after the start of heat generation of the heating element 100, the heating appliance 50 at a position facing the heat generating region as the other surface side of the container 20 After the surface temperature (°C) of reaches the highest temperature, the average rate of change of the surface temperature until the surface temperature (°C) of the heating appliance 50 reaches 45°C is -1.0°C/min or more,- It is 0.5 degreeC/min or less.

Description

Warmer

The present invention relates to a heating appliance.

BACKGROUND ART [0002] Conventionally, a heating apparatus comprising an oxidizable metal such as iron powder, an electrolyte such as sodium chloride, and water, and using the heat of reaction generated by the oxidation reaction of the oxidizable metal, has been used. Such a heating implement is widely preferred for reasons such as being lightweight and easily obtaining a heating effect and a feeling of relaxation, and is used in various scenes.

For example, Patent Literature 1 discloses an α-wave enhancing sphere that increases the appearance amount of α-waves by supplying warm steam to the corners of the eyes.

On the other hand, in the case of using the reaction heat generated by the oxidation reaction of a metal to be oxidized such as iron, it is necessary to control the oxidation reaction so as not to cause a trouble that the heat generation is abnormally accelerated. For example, in Patent Document 2, From the viewpoint of preventing troubles such as abnormal heat generation in advance, techniques for specifying the content of the absorbent, the mass ratio of the water and the absorbent, and the amount of water are disclosed.

Japanese Unexamined Patent Publication No. 2002-143203 Japanese Unexamined Patent Publication No. 2013-146555

The present invention,

A heating part containing an oxidizable metal, an absorbent and water,

Provided is a heating appliance that accommodates the heating unit, includes a heating element including a receptor having air permeability on at least one surface, and satisfies the following conditions.

Conditions: When measuring the temperature in an environment of room temperature 20°C and humidity 50%, after the heating of the heating element starts, the surface temperature (°C) of the heating appliance at a position facing the heating area as the other side of the container is After reaching the maximum temperature, the average rate of change of the surface temperature until the surface temperature (°C) of the heating appliance reaches 45°C is -1.0°C/min or more and -0.5°C/min or less.

Advantageous Effects of Invention According to the present invention, it is possible to provide a heating appliance capable of improving the goodness of falling asleep and improving vitality after waking up.

The above-described objects and other objects, features, and advantages are further clarified by the preferred embodiments described below and the following drawings accompanying them.
1 is a plan view of a heating appliance according to an embodiment.
2 is an exploded perspective view of a heating appliance according to an embodiment.
3 is a plan view schematically showing a heat generating element according to an embodiment.
4 is a cross-sectional view schematically showing a heating element according to an embodiment.
5 is a cross-sectional view schematically showing a heating element according to an embodiment.
6 is a diagram showing a heating profile obtained in Examples and Comparative Examples.

In recent years, heating appliances are sometimes used before going to bed. Therefore, the present inventors conducted a review so as to improve the function of a heating appliance used before going to bed, and made a new attempt different from Patent Documents 1 and 2 to improve the good fall asleep by a heating appliance. As a result, the heating profile of the heating appliance According to the difference, it was found that the obtained effect feeling was different. In addition, based on these findings, as a result of conducting an examination, a heating appliance having a heating profile that satisfies a specific condition as a heating profile different from that of the prior art such as Patent Documents 1 and 2 is greatly improved in that the wearer falls asleep. After waking up, it was found that an unexpected effect of improving vitality was obtained, and the invention was completed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in all the drawings, the same components are denoted by the same reference numerals, and explanations are omitted as appropriate.

In this embodiment, "air permeability" is a value measured according to JIS P8117, and is defined as the time for 100 ml of air to pass through an area of 6.45 cm 2 under a constant pressure. The "air permeability" can be measured with an Oken-type air permeometer or a measuring instrument equivalent thereto. That is, the high air permeability means that it takes time to pass air, that is, the air permeability is low. Conversely, small air permeability means high air permeability.

In addition, in this embodiment, "basis weight" means the mass per unit area when viewed from the plane of the heating appliance.

[Heating mouth]

First, an example of the heating implement 50 according to the present embodiment will be described based on FIGS. 1 and 2. 1 is a plan view of a heating appliance, and Fig. 2 is an exploded perspective view of a heating appliance.

The heating implement 50 according to the present embodiment is of a so-called eye mask type, and a pair of heating elements 100 cover the eyes or eyelids of the user, respectively, and apply water vapor heated to a predetermined temperature to the eyes and around them. It is used to do.

As shown in FIG. 1, the heating implement 50 has a body part 51 and an earring part 52 in which a hole 54 into which an ear is inserted is formed.

The main body 51 has a longitudinal direction X and a transversely elongated shape having a width direction Y orthogonal thereto. The main body 51 has a substantially elliptical shape, for example. The earring portions 52 are used as a pair, and each earring portion 52 is attached to each end portion of the body portion 51 in the longitudinal direction (X direction). The heating implement 50 is attached so that each earring part 52 may be attached to the user's ear, and the body part 51 covers both eyes of the user. Under this use condition, steam heating generated from the heating element 100 to be described later is applied to the user's eyes. The heating implement 50 can further improve the comfort and sleepiness mentioned later by such steam heating.

In FIG. 2, an exploded perspective view of the heating appliance 50 in a state before use is shown. In the figure, the earring part 52 is arrange|positioned in the uppermost part of the heating implement 50, and in use, the center part is removed, it spreads to the left and right, and is inverted to the outside, and is set as the state of FIG.

The heating implement 50 of this embodiment accommodates the heating part 10 containing the metal to be oxidized, a carbon component, and water, and the heating part 10, and the container 20 which has air permeability on at least one surface. It includes the heating element 100 including, and satisfies the following conditions.

Conditions: When measuring the temperature in an environment at room temperature of 20°C and humidity of 50%, after the start of heat generation of the heating element 100, the heating implement 50 at a position facing the heat generating region as the other side of the container 20 After the surface temperature (°C) of reaches the highest temperature, the average rate of change of the surface temperature until the surface temperature (°C) of the heating appliance 50 reaches 45°C is -1.0°C/min or more,- It is 0.5 degreeC/min or less.

The start of heat generation of the heating implement 50 refers to a point in time when an oxidation reaction is started and heat generation accompanying the oxidation reaction starts when the oxidizable metal in the heating element 100 comes into contact with oxygen. In addition, the surface temperature (°C) of the heating implement 50 is the highest temperature, which is the highest temperature that the heating implement 50 first reaches after the start of heat generation.

In the heating implement 50, the average rate of change in the above-described conditions is lower than that of the prior art, and means that the heating appliance 50 relatively slowly decreases temperature from the highest temperature to a specific temperature. Thereby, while the abrupt temperature change from the highest temperature is suppressed, the heat retention state is maintained, and by appropriately lowering the temperature, it is possible to impart a heat effect with good balance throughout the use of the heating implement 50. As a result, when the heating appliance 50 is used at bedtime, the goodness of falling asleep is improved. The specific mechanism of the relationship between the heating profile by such a heating device 50 and the good sleep is not clear, but for a long time, for example, 10 minutes or longer, wearing the heating device 50 to keep the eyes warm In the case of doing so, it is presumed that lowering the temperature gently rather than continuing to maintain a constant temperature sustains the warmth and makes falling asleep better. And this relationship was found out for the first time as a result of repeated studies by the present inventors. In addition, good sleep is intended to be an effect of making the elevation feel smooth and the time to the elevation is short. With good sleep, sleep deepens, you feel refreshed when you wake up, and you can be healthy after waking up, and you can expect to be more enthusiastic during the day.

In addition, by controlling the surface temperature on the other surface side of the container 20 of the heating appliance 50, it is possible to impart a good fall asleep in the entire heating appliance 50 such as the exothermic reaction of the heating unit 10 and the sheet configuration. It becomes easy to impart the optimal heat effect to the corners of the eyes.

In addition, with respect to the above conditions in the heating appliance 50 of the present embodiment, the other side of the container 20 refers to the side of the container second sheet 202 to be described later, and the heat-generating region refers to a heat generating part to be described later. (10) means the entire area where is placed. That is, in the heating appliance 50, the position facing the heat generating region is a region facing the region in which the heat generating portion 10 is disposed when viewed in a plan view. In addition, the surface of the heating implement 50 is a surface located on the outermost side of the sheets constituting the heating implement 50. In this embodiment, the surface of the heating implement 50 on the other surface side of the container 20 is the outer surface of the thermal insulation sheet 60 to be described later.

Hereinafter, the "surface temperature (°C) of the heating implement 50 at a position facing the heat generating region as the other surface side of the receptor 20" is simply referred to as "the surface temperature of the heating appliance 50 (°C)". .

Moreover, in order to obtain the heating implement 50 provided with the heating profile satisfying the above conditions, it is important to appropriately adjust and combine the following factors.

(1) A method of manufacturing the heat generating part 10, and the content of the metal to be oxidized.

(2) Air permeability of the receptor 20.

(3) The basis weight of the constituent material of the heating appliance 50.

More specifically, for example, in the case of using the coating method described later as the method for manufacturing the heat generating part 10, the content of the metal to be oxidized can be increased by increasing the discharge pressure of the paint (heating composition) per unit time. I can. In addition, if the discharge pressure is increased, it is not possible to maintain the shape retention, and the paint tends to protrude from the surface to be applied. Therefore, a thickener is added to the paint and a paint in which the oxidizable metal is uniformly dispersed is used. Conduct. Thereby, it is possible to maintain the shape retention on the coated surface, and the heat generating portion 10 having stable heat generating properties can be obtained. However, the heating implement 50 is not limited to such a manufacturing method. In addition, by the air permeability of the receptor 20, the amount of oxygen supplied to the heating part 10, the amount of steam emitted from the heating part 10, the effect on the exothermic reaction by the steam, etc. can be controlled. It is adjusted according to the metal content. In addition, since the heat retention of the heating appliance 50 is controlled by the basis weight of the material constituting the heating appliance 50, it is preferable to control the basis weight while balancing the air permeability in the heating appliance 50 Do.

Moreover, by providing the following configuration, the heating implement 50 can further improve the goodness of falling asleep, and can improve vitality and concentration after waking up.

In the above conditions, it is preferable that the maximum temperature of the surface temperature of the heating appliance 50 is 60°C or higher and 65°C or lower.

By setting the temperature to 60°C or higher, sufficient heat is provided to the corners of the eyes, making it easier to maintain the heat retention time, and allowing the temperature to decrease slowly. As a result, the comfort of the wearer is further strengthened, and the goodness of falling asleep can be improved.

On the other hand, by setting the temperature to 65°C or less, excessive heating is suppressed, and a heat effect with good balance is obtained throughout the use of the heating appliance 50, thereby improving the good sleep more effectively, and waking up when waking up is refreshing. And improve vitality.

In addition, the heating implement 50 includes the air permeability (second/100 ml) of one surface of the container 20 (that is, the container first sheet 201) and the basis weight of the oxidizable metal content (g/m 2 ). It is preferable to control the product to be a value of not less than 1.4 × 10 ⁶ and less than 3.1 × 10 ⁶ . This numerical value is considered to be related to the temperature decrease (persistence) in the second half in the heat generating profile of the heating appliance 50.

By setting it as such a numerical range, the temperature-fall rate can be lowered, a heating effect having a good balance throughout the entire use of the heating appliance 50 can be obtained, and the good sleep and vitality after waking up can be improved more effectively. For this reason, the greater the basis weight of the oxidizable metal remaining unreacted after the heating device 50 starts to generate heat and after reaching the maximum temperature, the easier the amount of vapor generated in the second half of the heating profile increases, and The higher the air permeability of the first receptor sheet 201 is, the lower the air permeability, and the generated vapor is not released to the outside, so that the temperature decrease accompanying the reduction of the oxidation reaction is suppressed. As a result, the amount of steam generated by the heating element 100 to the outside becomes an appropriate amount for warming the inside of the heating element 100 and imparting a desired temperature to the corners of the eye, and maintaining a balanced state for a long time. Thus, it is considered that the rate of change of the surface temperature of the heating appliance 50 after the heating appliance 50 reaches the maximum temperature can be adjusted within a desired range.

Specifically, in the heating appliance 50, the air permeability (second/100 ml) of one side of the container 20 (that is, the container first sheet 201) and the basis weight of the oxidizable metal content (g/ The product of m2), from the above viewpoint, is preferably 1.4 × 10 ⁶ or more, more preferably 1.45 × 10 ⁶ or more, even more preferably 1.5 × 10 ⁶ or more, and 1.55 × 10 ⁶ or more. It is particularly preferred to do.

In addition, the product of the air permeability of one side of the container 20 (sec/100 ml) and the basis weight (g/m 2) of the oxidizable metal content is preferably less than 3.1×10 ⁶ from the above viewpoint, and 2.7 × 10 ⁶ or less, and more preferably not more, more preferably to a 2.0 × 10 ⁶ or less, and particularly preferably at most 1.9 × 10 ^6.

That is, from the above point of view, the product of the air permeability (second/100 ml) of one side of the receptor 20 and the basis weight of the oxidizable metal content (g/m 2) is 1.4 × 10 ⁶ or more and less than 3.1 × 10 ⁶ Preferably, 1.45 × 10 ⁶ or more, more preferably 2.7 × 10 ⁶ or less, more preferably 1.5 × 10 ⁶ or more and 2.0 × 10 ⁶ or less, and 1.55 × 10 ⁶ or more, 1.9 × 10 It is particularly preferable to set it to ⁶ or less.

In addition, in the heating appliance 50, the ratio of the basis weight (g/m2) of the oxidizable metal content to the air permeability (second/100 ml) of one side of the container 20 is, in other words, the container 20 It is the product of the reciprocal of the air permeability (second/100 ml) of one side of the (receptor first sheet 201) and the basis weight (g/m 2) of the oxidizable metal content.

The lower limit of the product of the reciprocal of the air permeability (second/100 ml) of one side of the receptor 20 (the first sheet 201 of the receptor) and the basis weight (g/m 2) of the oxidizable metal content is set to 0.06 or more. On the other hand, it is preferable that the upper limit is 0.17 or less.

Further, the product of the reciprocal of the air permeability (second/100 ml) of one side of the receptor 20 (the first sheet 201 of the receptor) and the basis weight (g/m 2) of the oxidizable metal content is 0.06 or more and 0.17 or less. It is preferable to set it as the numerical range of.

The product of the reciprocal of the air permeability (second/100 ml) of one side of the receptor 20 and the basis weight of the oxidizable metal content (g/m 2) is that of the heating appliance 50 It is thought to be related to the highest temperature in the exothermic profile. That is, since the maximum temperature of the heating appliance 50 is proportional to the oxidation reaction rate of the metal to be oxidized, it is important to control a factor that contributes to the oxidation reaction rate. Therefore, the lower the air permeability of the first receptor sheet 201, the higher the air permeability, and the higher the amount of oxygen, the higher the oxidation reaction rate. Moreover, as the content of the metal to be oxidized increases, the oxidation reaction rate can be increased. In other words, it is considered that the reciprocal of the air permeability of the receptor first sheet 201 and the larger the basis weight of the oxidizable metal content, the more actively the oxidation reaction proceeds. Therefore, in the heating appliance 50, the reciprocal of the air permeability (second/100 ml) of one side of the container 20 (receptor first sheet 201) and the basis weight of the oxidizable metal content (g/m 2) By multiplying by a predetermined value, it is possible to control the maximum attainable temperature to a preferable range, and accordingly, the rate of change of the surface temperature of the heating appliance 50 is also an optimum range for making it more favorable to fall asleep. It becomes easy to get drunk. For this reason, better sleepiness is improved effectively, and it becomes easy to improve vitality after waking up.

In addition, under the above-described conditions, the time until the surface temperature of the heating appliance 50 reaches from 35°C to 45°C after the start of heat generation of the heating appliance 50 is 1.0 minutes. It is preferable that it is more than 1.5 minutes.

Thereby, by the heating element 100, the heating effect is obtained immediately after the use of the heating appliance 50 is started, and the feeling of cooling immediately after the start of use of the heating appliance 50 is suppressed, and the heating appliance 50 is During use, a heat effect having a good balance throughout the entire period is obtained, it is possible to more effectively improve the sleepiness, and the vitality after waking up is also easily improved. The reason for this is that it is considered that it is desirable that the time until sufficient heat is applied to the corners of the eyes is short, from the viewpoint of enhancing the comfort of the wearer and making it more comfortable to fall asleep.

In addition, the surface temperature of the heating implement 50 is obtained by measuring the surface temperature of the heating implement 50 using a measuring device conforming to JIS S4100. Specifically, on the outermost surface of the heating appliance 50, as the other surface side of the container 20, a temperature sensor is installed and fixed in the area facing the heating area, and the heating element 100 starts to generate heat. Then, the temperature is measured for 40 minutes at 10 second intervals. The temperature sensor is fixed, for example, by placing a 500 g weight (for example, an SUS-made hole plate) on a mesh cushion.

In this embodiment, it is the temperature of the area|region where the heat-generating part 10 is arrange|positioned, as seen from the planar view of the heating implement 50 as the outer surface of the heat insulating sheet 60 mentioned later.

In addition, the measurement is carried out in a normal temperature (20° C.), normal humidity (50%) environment.

In addition, in this embodiment, as the eye mask type heating implement 50, a case where one surface of the receptor 20 (receptor first sheet 201) has air permeability has been described, but the heating of the present invention The sphere is not limited to this. The heater of the present invention may be, for example, a type of heater applied to a body such as a back or a waist, and the container may be one having ventilation on both sides.

When both sides of the receptor have air permeability, it is preferable to control the air permeability of the receptor, which becomes the surface facing the skin side when using the heater. Specifically, as described above, when the heater is used, the product of the air permeability of the receptor serving as the surface facing the skin side (sec./100 ml) and the basis weight of the oxidizable metal content (g/m 2) is 1.4 × 10 ⁶ It is more preferable to set it as 3.1 x 10 ⁶ or less. In addition, as described above, the product of the reciprocal of the air permeability (second/100 ml) of the receptor serving as the surface facing the skin side when the heating appliance is used and the basis weight of the oxidizable metal content (g/m 2) is 0.06 or more, 0.17 It is preferable to do the following.

[Heating element]

The heating element 100 provided in the heating appliance 50 will be described.

In the present embodiment, a pair of heat generating elements 100 are disposed on the heating appliance 50, and each heat generating element 100 covers the user's eyes.

3 is a plan view showing an example of the heat generating element 100 of the present embodiment. Moreover, FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3. The heating element 100 of the present embodiment includes a heat generating portion 10 containing an oxidizable metal, a carbon component, and water, and a container 20 containing the heat generating portion 10.

The heating unit 10 constituting the heating element 100 will be described.

The heat generating portion 10 is formed of a heat generating composition containing a metal to be oxidized, a carbon component, and water.

Specifically, the heat generating part 10 generates heat by an oxidation reaction of an oxidizable metal to provide a heat-heating effect, and has a performance of a heat generating temperature of 30° C. or more and 70° C. or less in measurement according to JIS S4100. Can be used. In addition, the heating unit 10 has an effect of generating water vapor by heating the water contained therein.

The metal to be oxidized is a metal that emits heat of oxidation reaction, for example, powder or fiber of one or two or more metals selected from the group consisting of iron, aluminum, zinc, manganese, magnesium, and calcium. Among them, iron powder is preferred in terms of handling properties, safety, manufacturing cost, storage properties and stability. Examples of the iron powder include one type or two or more types selected from the group consisting of reduced iron powder and atomized iron powder.

The metal to be oxidized has an average particle diameter of preferably 10 µm or more, more preferably 15 µm or more, and still more preferably 20 µm or more when it is made into a powder form from the viewpoint of efficient oxidation reaction. From the same viewpoint, the average particle diameter of the oxidizable metal is preferably 200 µm or less, more preferably 180 µm or less, and still more preferably 150 µm or less.

In addition, the average particle diameter of the metal to be oxidized refers to the arithmetic average diameter of the maximum length in the form of the powder, and can be measured by sieve classification, dynamic light scattering method, laser diffraction method, etc., but among them, laser diffraction method It is preferable to measure by.

The content of the metal to be oxidized in the heating unit 10 is from the viewpoint of being able to increase the surface temperature of the heating appliance 50 to a desired temperature at which a feeling of warmth is most obtained by an increase in the warmth, and the heating appliance (50) From the viewpoint of making the change of the surface temperature of (50) a desired range, providing a sense of comfort to the wearer over a long period of time, further improving the wearer's sleep and improving vitality after waking up, expressed as a basis weight, preferably 250 g /M 2 or more, more preferably 300 g/m 2 or more, still more preferably 350 g/m 2 or more, and particularly preferably 370 g/m 2 or more. In addition, from the same viewpoint, the content of the metal to be oxidized in the heat generating portion 10 is preferably 1,200 g/m 2 or less, more preferably 900 g/m 2 or less, and still more preferably 650 g/m 2 Or less, and particularly preferably 540 g/m 2 or less.

In addition, the content of the metal to be oxidized in the heat generating portion 10 can be determined by an ash test according to JIS P8128 or a thermogravimetric measuring instrument. In addition, by using the property that magnetization occurs when an external magnetic field is applied, it can be quantified by a vibration sample type magnetization test. Especially, it is preferable to obtain|require it with a thermogravimetry.

The carbon component has a water-retaining ability, oxygen supply ability, and catalytic ability, and for example, one or two or more materials selected from the group consisting of activated carbon, carbon black, acetylene black, and graphite can be used. Among them, activated carbon is preferably used because it is easy to adsorb oxygen when wet. Further, one or two or more kinds of fine powders or small particles selected from the group consisting of palm shell coal, wood flour coal, and pit coal are more preferably used. From the viewpoint of making it easy to raise the surface temperature of the heating element 100 to a desired temperature, wood coal is more preferable.

From the viewpoint of uniformly mixing the carbon component with the oxidizable metal, the average particle diameter is preferably 10 µm or more, more preferably 12 µm or more, and still more preferably 15 µm or more. Further, from the same viewpoint, the average particle diameter of the carbon component is preferably 200 µm or less, more preferably 150 µm or less, and still more preferably 100 µm or less.

In addition, the average particle diameter of the carbon component refers to the arithmetic average diameter of the maximum length in the form of the powder, and can be measured by dynamic light scattering method, laser diffraction method, etc., but among them, it is preferable to measure by laser diffraction method. Do. It is preferable to use a carbon component in a powder form, but a form other than a powder form may be used, for example, a fibrous form may be used.

The content of the carbon component in the heating unit 10 is preferably 1 part by mass or more, more preferably 3 parts by mass or more, and still more preferably 6 parts by mass, based on 100 parts by mass of the content of the metal to be oxidized. It's more than a wealth. In addition, the content of the carbon component in the heating unit 10 is preferably 40 parts by mass or less with respect to 100 parts by mass of the content of the metal to be oxidized from the viewpoint of sufficiently obtaining oxygen supply to the heating unit 10 , More preferably, it is 15 parts by mass or less, and still more preferably, it is 12 parts by mass or less.

In addition, the content of the carbon component in the heat generating portion 10 is expressed in basis weight, and is preferably 10 g/m 2 or more, more preferably 20 g/m 2 or more, and still more preferably 25 g/m 2 It is more than ㎡. Further, the content of the carbon component is expressed in basis weight, preferably 400 g/m 2 or less, more preferably 250 g/m 2 or less, and still more preferably 120 g/m 2 or less.

The content of water in the heating part 10 is the viewpoint of rapidly increasing the temperature and providing a pleasant warm feeling by satisfactorily proceeding the oxidation reaction of the oxidizing metal, and controlling the amount of heat generated and the amount of water vapor generated, thereby providing a suitable temperature change at the corners of the eyes. From the viewpoint of improving the vitality after waking up by improving falling asleep, it is preferably 20 parts by mass or more, more preferably 30 parts by mass or more, and even more preferably 40 parts by mass or more with respect to 100 parts by mass of the metal to be oxidized. to be. The content of water in the heating part 10 is preferably 100 parts by mass or less, more preferably 90 parts by mass or less, with respect to 100 parts by mass of the metal to be oxidized, from the viewpoint of making the maximum attainable temperature at a certain temperature or higher, More preferably, it is 80 parts by mass or less. Water in the heat generating portion 10 becomes water vapor due to a temperature increase accompanied by heat generation due to the oxidation reaction of the oxidizable metal.

In addition, the content of moisture in the heating appliance 50 is expressed in basis weight, preferably 150 g/m 2 or more, more preferably 180 g/m 2 or more, and still more preferably 200 g/m 2 or more. . In addition, the moisture content is expressed in basis weight, preferably 600 g/m 2 or less, more preferably 400 g/m 2 or less, and still more preferably 350 g/m 2 or less.

In the heating part 10, moisture is maintained and the oxidation reaction of the oxidizable metal proceeds rapidly and continuously, so that the temperature rises quickly and provides a pleasant feeling of warmth, and the amount of heat generated and the amount of water vapor generated are controlled, and It is possible to contain an absorbent from the viewpoint of improving the vitality after waking up by providing an appropriate temperature change to improve falling asleep. As the absorbent, a polymer having water absorption, powder having water absorption, or the like can be used.

Examples of the water absorbent polymer include a hydrophilic polymer having a crosslinked structure capable of absorbing and maintaining a liquid 20 times or more of its own weight, and the absorbent powder is composed of vermiculite, sawdust, silica gel, and pulp powder. 1 type or 2 or more types of powders selected from the group can be mentioned. The content in the case of containing the water absorbing agent is preferably 2 parts by mass or more, on the other hand, preferably 20 parts by mass or less, and more preferably 15 parts by mass or less with respect to 100 parts by mass of water in the heat generating unit 10.

The heat generating portion 10 may further contain a reaction accelerator. By containing the reaction accelerator, it is possible to make it easy to sustain the oxidation reaction of the oxidizable metal. Moreover, by using a reaction accelerator, the oxidation film formed on the metal to be oxidized accompanying the oxidation reaction can be destroyed and the oxidation reaction can be accelerated. Examples of the reaction accelerator include one or two or more materials selected from the group consisting of alkali metals, alkaline earth metal sulfates, and chlorides. Among them, one or two selected from the group consisting of various chlorides such as sodium chloride, potassium chloride, calcium chloride, magnesium chloride, ferrous chloride, ferric chloride, and sodium sulfate in view of excellent conductivity, chemical stability, and production cost. It is preferable to use more than one kind of material.

The content of the reaction accelerator in the heating unit 10 is heated up to an appropriate temperature range where warmth is obtained, and thereby, a suitable temperature change is given to the corners of the eyes over a long period of time to further improve sleep and improve vitality after waking up. Here, with respect to 100 parts by mass of the oxidizable metal content, it is preferably 1 part by mass or more, more preferably 3 parts by mass or more, and still more preferably 6 parts by mass or more.

In addition, from the same viewpoint, the content of the reaction accelerator in the heat generating portion 10 is preferably 25 parts by mass or less, more preferably 20 parts by mass or less, further preferably based on 100 parts by mass of the content of the oxidizable metal. It is 15 parts by mass or less.

In the present embodiment, the heat generating portion 10 has a sheet shape, but the heat generating portion 10 may be in the form of a powder or a sheet. From the viewpoint of excellent usability of the heating implement 50, it is preferably in the form of a sheet.

As a manufacturing method of the sheet-like heat generating part 10, a heat generating composition is wet-formed, a heat generating composition is sandwiched between a substrate such as paper, and a heat generating composition is applied to a substrate such as paper. And what is formed by consolidating the heat generating composition by pressing or the like. Among them, it is preferable that the heating unit 10 is formed by wet-forming the heating composition and coating the heating composition on a substrate such as paper, from the viewpoint of excellent usability and easy production.

In the case of employing a coating method as a manufacturing method of the heating part 10, the coating method is not particularly limited, and for example, die coating, roll coating, screen printing, roll gravure, knife coating, curtain coater, etc. Can be used.

The thickness of the heat generating portion 10 is preferably 0.2 mm or more, more preferably 0.4 mm or more, and still more preferably 0.5 mm or more. On the other hand, the thickness of the heat generating portion 10 is preferably 5 mm or less, more preferably 3 mm or less, and still more preferably 2 mm or less. By setting the thickness of the heat generating portion 10 in the above range, the heat generating element 100 can be made a size that is easy to use while enhancing the heat generating effect. In addition, the thickness of the heat generating part 10 represents an average thickness.

The heating unit 10 may contain, if necessary, a surfactant, a drug, a flocculant, a colorant, a strength enhancer, a pH control agent, a bulk agent, and the like, as long as the effect of the present invention is not impaired.

Subsequently, the receptor 20 constituting the heating element 100 will be described.

The container 20 has air permeability on at least one surface and accommodates the heat generating portion 10. Receptor 20, for example, as shown in Fig. 4, to be constituted by bonding the peripheral portion 203 of two sheets (receptor first sheet 201, receptor second sheet 202) I can. That is, in the container 20, one surface is composed of the container first sheet 201, and the other surface is composed of the container second sheet 202.

In the present embodiment, the first receptor sheet 201 is located on the user's skin side than the heating unit 10, and the second receptor sheet 202 is located on the side farther from the user's skin than the heating unit 10. To be located.

Moreover, it is preferable that the first container sheet 201 is a sheet excellent in air permeability, while the second container sheet 202 is preferably a sheet having poor air permeability, that is, a poorly ventilated sheet or a non-ventilated sheet.

Specifically, the air permeability of the first receptor sheet 201 is from the viewpoint of rapidly increasing the temperature of the heating element to an appropriate temperature for further improving the sleepiness and providing a pleasant warmth without delay, and From the point of view of making it easier to give temperature changes around the eyes, which is desirable for improving the sleepiness after awakening by further improving the good sleep by sustaining a feeling of warmth, it is preferably 10,000 seconds/100 ml or less, and more preferably It is 7,000 sec/100 ml or less, More preferably, it is 6,000 sec/100 ml or less.

On the other hand, the air permeability of the first receptor sheet 201 is from the viewpoint that the oxidation reaction in the heat generating portion 10 is too fast, so that the oxidation reaction in the heat generating portion 10 is too hot, so that it is necessary to set it at an appropriate speed without losing a sense of warmth, and the temperature due to rapid temperature change. From the viewpoint of suppressing loss of pleasure, further improving sleepiness and improving vitality after waking up, it is preferably 100 sec/100 ml or more, more preferably 500 sec/100 ml or more, and even more preferably Is 1,000 sec/100 ml or more, particularly preferably 3,000 sec/100 ml or more.

As the container 1st sheet 201, a breathable sheet, a laminated sheet obtained by laminating a nonwoven fabric and a breathable sheet, a laminated sheet obtained by laminating a knitted paper and a breathable sheet, or the like can be used.

As the air permeable sheet, a resin porous sheet or a resin sheet having air permeability can be used. As the resin, for example, one or two or more of polyethylene, polypropylene, and ethylene vinyl acetate copolymer can be used. As a resin-made porous sheet, for example, a thermoplastic resin and a melt-kneaded product of an organic or inorganic filler incompatible with a thermoplastic resin are molded into a film, and are obtained by uniaxial or biaxial stretching. What has a structure is mentioned. In addition, as a sheet made of resin having ventilation holes, a non-breathable sheet or a non-breathable sheet in which micropores are formed with a needle or the like, or those in which micropores are formed with a needle, etc. have.

The thickness of the first container sheet 201 is preferably 5 µm or more and 200 µm or less.

On the other hand, the air permeability of the receptor second sheet 202 is preferably lower than that of the receptor first sheet 201 from the viewpoint of effectively applying water vapor generated in the heat generating portion 10 to the user to further improve sleep. And it is more preferable that it is a non-breathable sheet. When the second container sheet 202 has air permeability, the preferred air permeability is, specifically, preferably 10,000 seconds/100 ml or more, and more preferably 20,000 seconds/100 ml or more.

In addition, the upper limit of the air permeability of the second container sheet 202 is not particularly limited, but when the second container sheet 202 has air permeability, from the viewpoint of high availability of the sheet, etc., preferably It is less than 100,000 seconds/100 ml.

As the acceptor second sheet 202, a material that does not substantially permeate oxygen can be used, and for example, polyolefin such as polyethylene and polybutadiene, polyvinyl chloride, polyvinylidene chloride, polyester, polyether, polysulfone And one or two or more polyamides may be used.

The thickness of the second container sheet 202 is preferably 5 µm or more and 200 µm or less.

In addition, as shown in FIG. 2, on the surface of the container 20 on the side of the container second sheet 202, a heat insulating sheet 60 covering the heat generating element 100 is disposed. Thereby, while reducing the heat generated from the heating element 100 from being released to the outside of the heating appliance 50, it is possible to suppress an influence on the heating profile of the heating appliance 50 due to the temperature of the outside air. The heat retention sheet 60 should just cover at least a part of the heat generating element 100. Moreover, the heat retention sheet 60 may also serve as the bag body 53 mentioned later, especially the bag body 2nd sheet 56.

The basis weight of the thermal insulation sheet 60 is preferably 30 g/m 2 or more, more preferably 40 g/m 2 or more, and from the viewpoint of weight reduction, etc., 150 g/m 2 or less is preferable and 140 g/m 2 or less Is more preferable.

In the heating appliance 50, the total value of the basis weight from the other surface of the container 20 to the outermost layer of the heating appliance 50 on the side opposite to the heating unit 10 is the basis weight of the second container sheet 202 And, it becomes the total value of the basis weight of the bag body 2nd sheet 56 and the basis weight of the thermal insulation sheet 60. The total value of the basis weight is from the viewpoint of reducing the heat generated from the heating element 100 from being released to the outside of the heating appliance 50 and suppressing the influence on the heating profile of the heating appliance 50 at the temperature of the outside air, 40 g/m 2 or more is preferable, and 70 g/m 2 or more is more preferable. On the other hand, the total value of the basis weight is preferably 300 g/m 2 or less, more preferably 260 g/m 2 or less, from the viewpoint of weight reduction of the heating appliance 50.

As the material of the thermal insulation sheet 60, the same material as the bag body second sheet 56 described later can be used.

[Other]

As shown in FIGS. 1 and 2, the heating implement 50 is provided with a bag body 53 that houses the heat generating body 100.

The pocket body 53 has a pocket body first sheet 55 located on a side close to the user's skin surface, and a pocket body second sheet 56 located on a side far from the user's skin surface. These bag body 1st sheet 55 and bag body 2nd sheet 56 are formed so that the heating element 100 may be sandwiched.

The basis weight of each of the bag body first sheet 55 and the bag body second sheet 56 is preferably 20 g/m 2 or more from the viewpoint of preventing the inside from being seen through, or from the viewpoint of heat retention, flexibility, thickness, etc. And 40 g/m 2 or more is more preferable. Moreover, the basis weight of each of the bag body first sheet 55 and the bag body second sheet 56 is preferably 200 g/m 2 or less, and more preferably 110 g/m 2 or less.

In addition, in order to apply the generated water vapor to the user, the first sheet 55 of the bag body, and the second sheet 56 of the bag body, preferably have air permeability in order to smoothly supply oxygen to the heating element 100. Do.

Specifically, the air permeability of the bag body first sheet 55 and the bag body second sheet 56 is preferably 6,000 seconds/100 ml or less, more preferably 1,000 seconds/100 ml or less, and 500 seconds/100 ml It is more preferable that it is below, and it is especially preferable that it is 0 second/100 ml.

As the bag body 1st sheet 55 and the bag body 2nd sheet 56, fiber sheets including a nonwoven fabric can be used, for example. For example, one type or two or more types selected from needle punch nonwoven fabric, air-through nonwoven fabric, and spun bond nonwoven fabric may be used.

The bag body 1st sheet 55 and the pocket body 2nd sheet 56 are the same shape, and are substantially elliptical. And the outer shape of the bag body 1st sheet 55 and the pocket body 2nd sheet 56 constitutes the outer shape of the main body part 51. The bag body 1st sheet 55 and the bag body 2nd sheet 56 superimpose them, at least part of their peripheries are joined, and the central part of the X direction is joined along the Y direction, and the bag body 53 Becomes. In order to bond the bag body 1st sheet 55 and the bag body 2nd sheet 56, a hot melt adhesive can be used, for example. In addition, the heat generating body 100 may be fixed to the bag body 53 by an adhesive or heat seal (not shown).

The bag body 53 is formed with substantially V-shaped notch portions 53A and 53B that are cut inward from the long side along the Y direction at the position of the central portions of the two long sides extending in the X direction. The notch portions 53A and 53B have different degrees of cut. When the heater 50 is attached, the notch portion 53A is located in or near the user's eyebrows. When the notch part 53B is attached to the heating appliance 50, the notch part 53B is located at the user's specific amount. Typically, the notch portion 53B has a greater degree of cut than the notch portion 53A.

As shown in FIGS. 1 and 2, the heating implement 50 is provided with an earring portion 52. The earring portion 52 is used to fix the heating appliance 50 to the user's face.

In the state before use, the earring part 52 in the heating implement 50 is arrange|positioned on the bag body 1st sheet 55 as shown in FIG. When using the heating implement 50, the earring part 52 is turned outward, inverted, and is in an unfolded state. In a state before use, that is, in a state in which the left and right earring portions 52 are positioned on the pocket body first sheet 55, the outline formed by the left and right earring portions 52 is the first pocket body sheet 55 ) Is almost identical to the outline of. In addition, the earring part 52 can use the same material as the bag body 53.

Further, as shown in Fig. 5, the container 20 may be accommodated in the second container 40 made of a nonwoven fabric, which is a sheet material having good texture, in order to further enhance the usability.

The second container 40 is preferably constituted by a sheet having a basis weight of 5 g/m 2 or more, more preferably 10 g/m 2 or more. Moreover, it can be formed by bonding the periphery of a sheet of preferably 200 g/m 2 or less, more preferably 120 g/m 2 or less. Especially, it is preferable that it is a sheet of a basis weight of 20 g/m 2 or more and 120 g/m 2 or less from the viewpoint of weight reduction.

In this case, the total value of the basis weight from the other side of the container 20 to the outermost layer of the heating appliance 50 on the side opposite to the heating part 10 is the basis weight of the second container sheet 202 and the second container It becomes the total value of the basis weight of (40), the basis weight of the bag body 2nd sheet 56, and the basis weight of the thermal insulation sheet 60.

Examples of the sheet constituting the second container 40 include nonwoven fabrics and knitted fabrics.

As a nonwoven fabric, one or two or more types of fibers are used and manufactured by an air-through method, a spun bond method, a needle punch method, a melt blown method, a card method, a heat fusion method, a water flow interlock method, and a solvent adhesion method. Can be used. Among them, it is preferable to use a nonwoven fabric having elasticity from the viewpoint of texture and elasticity. As a nonwoven fabric having elasticity, a nonwoven fabric containing elastic fibers (e.g., polyurethane, polyester) or three-dimensional crimp fibers as constituent fibers is preferable. For example, an air-through nonwoven fabric, a spun bonded nonwoven fabric, or a needle punch nonwoven fabric Etc. are more preferable.

As a material for a specific nonwoven fabric, synthetic fibers containing polyester such as PET (polyethylene terephthalate), polyolefins such as PE (polyethylene), PP (polypropylene), and ethylene propylene copolymer, polyamide, polyacrylic, and the like; Natural fibers including cellulose, silk, cotton, and wool; Alternatively, one type or two or more types of fibers obtained by conjugating them may be mentioned.

In addition, since the heating implement 50 of the present embodiment has an oxidizable metal that is oxidized by oxygen, it is usually enclosed in an oxygen barrier bag and stored.

As described above, embodiments of the present invention have been described with reference to the drawings, but these are examples of the present invention, and various configurations other than the above can also be adopted.

Regarding the above-described embodiments, the present invention further discloses the following heating devices or uses.

<1>

A heating part containing an oxidizable metal, a carbon component, and water,

A heating appliance that accommodates the heating unit, includes a heating element including a receptor having ventilation properties on at least one surface, and satisfies the following conditions.

Conditions: When the temperature is measured in an environment at room temperature of 20°C and humidity of 50%, after the heating of the heating element starts, the surface temperature (°C) of the heating appliance at a position facing the heating region as the other side of the container is After reaching the maximum temperature, the average rate of change of the surface temperature until the surface temperature (°C) of the heating appliance reaches 45°C is -1.0°C/min or more and -0.5°C/min or less.

<2>

In the said conditions, the said maximum temperature is preferably 60 degreeC or more and 65 degrees C or less, The heating implement as described in <1>.

<3>

The heating implement according to <1> or <2> in the above conditions, wherein the time until the surface temperature of the heating appliance reaches from 35°C to 45°C is preferably 1.0 minutes or more and 1.5 minutes or less.

<4>

The product of the air permeability of the one side of the receptor (sec/100 ml) and the basis weight (g/m 2) of the oxidizable metal content is preferably 1.4 × 10 ⁶ or more and less than 3.1 × 10 ⁶ , <1> The heating implement according to any one of to <3>.

<5>

In <1> to <4>, the ratio of the basis weight (g/m2) of the oxidizable metal content to the air permeability (second/100 ml) of the one side of the container is preferably 0.06 or more and 0.17 or less. The heater according to any one.

<6>

The heater according to any one of <1> to <5>, wherein the air permeability of one side of the container is preferably 100 seconds/100 ml or more and 10,000 seconds/100 ml or less.

<7>

The heater according to any one of <1> to <6>, wherein the air permeability of one side of the container is more preferably 500 sec/100 ml or more and 7,000 sec/100 ml or less.

<8>

The heater according to any one of <1> to <7>, wherein the air permeability of one side of the container is more preferably 1,000 seconds/100 ml or more and 7,000 seconds/100 ml or less.

<9>

The heating implement according to any one of <1> to <8>, wherein the air permeability of one side of the container is more preferably 3,000 seconds/100 ml or more and 6,000 seconds/100 ml or less.

<10>

The heating implement according to any one of <1> to <9>, wherein the content of the oxidizable metal is preferably 250 g/m 2 or more and 1,200 g/m 2 or less per unit area when viewed from the top of the heating part.

<11>

The heating implement according to any one of <1> to <10>, wherein the content of the oxidizable metal is preferably 350 g/m 2 or more and 650 g/m 2 or less per unit area when viewed from the top of the heating part.

<12>

The heating implement according to any one of <1> to <11>, wherein the content of the oxidizable metal is preferably 370 g/m 2 or less and 540 g/m 2 or less per unit area when viewed from the top of the heating part.

<13>

In <1> to <12>, the sum of the basis weight from the other side of the container to the outermost layer of the heating appliance on the side opposite to the heat generating part is preferably 40 g/m 2 or more and 300 g/m 2 or less. The heater according to any one.

<14>

Preferably, the heating implement according to any one of <1> to <13>, comprising a heat insulating material covering the heating element on the other surface of the container.

<15>

The heater according to any one of <1> to <14>, wherein the air permeability of the other side of the container is preferably 10,000 seconds/100 ml or more, and preferably 20,000 seconds/100 ml or more.

<16>

The heating implement according to any one of <1> to <15>, wherein the air permeability of the other side of the container is preferably 20,000 seconds/100 ml or more.

<17>

The heating implement according to any one of <1> to <16>, wherein the other surface of the container is preferably non-breathable.

<18>

A heating part containing an oxidizable metal, a carbon component, and water,

And a heating element including a receptor having air permeability on at least one surface thereof and receiving the heating part,

A heating appliance in which a product of the air permeability of the container (sec/100 ml) and the basis weight (g/m 2) of the oxidizable metal content is 1.4×10 ⁶ or more and less than 3.1×10 ⁶

<19>

The heating appliance according to <18>, wherein the ratio of the basis weight (g/m 2) of the oxidizable metal content to the air permeability (second/100 ml) of the container is 0.06 or more and 0.17 or less.

<20>

The heating appliance according to <18> or <19>, in which the content of the oxidizable metal is 250 g/m 2 or more and 1200 g/m 2 or less, in plan view of the heat generating portion.

<21>

The heater according to any one of <18> to <20>, wherein the air permeability of one side of the container is preferably 100 seconds/100 ml or more and 10,000 seconds/100 ml or less.

<22>

The heater according to any one of <18> to <21>, wherein the air permeability of one side of the container is preferably 500 sec/100 ml or more and 7,000 sec/100 ml or less.

<23>

The heater according to any one of <18> to <22>, wherein the air permeability of one side of the container is preferably 1,000 sec/100 ml or more and 7,000 sec/100 ml or less.

<24>

The heater according to any one of <18> to <23>, wherein the air permeability of one side of the container is preferably 3,000 seconds/100 ml or more and 6,000 seconds/100 ml or less.

<25>

The product of the air permeability (second/100 ml) of the receptor and the basis weight (g/m2) of the oxidizable metal content is 1.45×10 ⁶ or more and 2.7×10 ⁶ or less, in any one of <18> to <24> Listed heater.

<26>

The product of the air permeability (second/100 ml) of the receptor and the basis weight (g/m 2) of the oxidizable metal content is 1.5 × 10 ⁶ or more and 2.0 × 10 ⁶ or less, in any one of <18> to <25> Listed heater.

<27>

The product of the air permeability (second/100 ml) of the receptor and the basis weight (g/m2) of the oxidizable metal content is 1.55×10 ⁶ or more and 1.9×10 ⁶ or less, in any one of <18> to <26> Listed heater.

<28>

The content of moisture in the heating part is expressed in basis weight, preferably 150 g/m2 or more, more preferably 180 g/m2 or more, still more preferably 200 g/m2 or more, and 600 g/m2 The heating appliance according to any one of <18> to <27>, which is m 2 or less, more preferably 400 g/m 2 or less, and still more preferably 350 g/m 2 or less.

<29>

The heating portion contains an absorbent, and the content of the absorbent is preferably 2 parts by mass or more, on the other hand, preferably 20 parts by mass or less, more preferably 15 parts by mass, based on 100 parts by mass of water in the heating unit The heater according to any one of <18> to <28> which is below.

<30>

The heating implement according to any one of <18> to <29>, in which the surface of the receptor having air permeability becomes the skin side.

<31>

The heating implement according to any one of <1> to <30>, wherein the heating implement releases water vapor.

<32>

A heating part containing an oxidizable metal, a carbon component, and water,

And a heating element including a receptor having air permeability on at least one surface thereof and receiving the heating part,

The product of the air permeability (second/100 ml) of the receptor and the basis weight (g/m 2) of the oxidizable metal content is 1.4×10 ⁶ or more and less than 3.1×10 ⁶ ,

The ratio of the basis weight (g/m 2) of the oxidizable metal content to the air permeability (second/100 ml) of the receptor is 0.06 or more and 0.17 or less,

The heating implement, wherein the air permeability (second/100 ml) of one side of the receptor is 3,000 seconds/100 ml or more and 6,000 seconds/100 ml or less.

<33>

The heating implement according to any one of <1> to <32>, wherein the heating implement is an eye mask type.

<34>

The use of the heating implement according to any one of <1> to <17>, in order to apply the heating appliance to the eyes and to make falling asleep favorable.

<35>

Use of the heating implement according to any one of <18> to <33>, in order to apply the heating appliance to the eyes and to make it favorable to fall asleep.

<36>

As a way to improve falling asleep,

The step of applying the heating appliance according to any one of <1> to <33> to the eyes for 5 minutes or more, and

A method for facilitating falling asleep, comprising the step of going to bed after applying the heater or during application of the heater.

Example

Hereinafter, the present invention will be described in more detail by examples. However, the scope of the present invention is not limited to these examples.

Examples and Comparative Examples

In accordance with the following procedure, a heating appliance having the configuration shown in Figs. 1 and 2 was produced.

＜Manufacture of heating unit＞

Wood pulp paper (20 g/㎡, manufactured by Inogami Corporation) and water absorbent polymer (sodium polyacrylate, spherical, average particle diameter 300 μm, 50 g/㎡, Aquaric CA, manufactured by Nippon Catalyst) and wood pulp A polymer sheet obtained by laminating paper (30 g/m2, manufactured by Inogami Corporation) was used as a substrate.

A coating material having the composition shown in Table 1 below was applied to one side of the substrate by a die coating method while adjusting the discharge pressure to produce a sheet-like coating. The discharge pressure was adjusted so that the basis weight of iron powder might be the value shown in Table 2.

Then, the obtained sheet-like coating was cut into a size of 49 mm x 49 mm, and 0.089 g of salt (Nihon Pharmacy's Sodium Chloride (manufactured by Otsuka Pharmaceutical Co., Ltd.)) was uniformly dispersed on the coated surface, and the heat generating portion 10 Was produced.

<Production of heating element>

According to the following procedure, the heating element of the form shown in FIG. 4 was produced.

Using the first container sheet and the second container sheet shown in Table 2, the heat generating part was sandwiched between the first container sheet and the second container sheet, and bonded at the periphery to obtain a heating element.

The heating element was stored in an oxygen barrier bag until evaluation described later was performed.

＜Production of heating appliance＞

Using two heating elements obtained above, an eye mask-shaped heating appliance shown in Fig. 1 was produced. A polypropylene nonwoven fabric (needle punching method) having a basis weight of 80 g/m2 as the first sheet of the bag body, and a cellulose/polyolefin composite fiber having a basis weight of 71 g/m2 (thermal fusion method) as a second sheet of the bag body, and a thermal insulation sheet (60) As a basis weight of 30 g/m 2, polyethylene terephthalate nonwoven fabric (air-through method) was used.

About the obtained heating tool, the measurement and evaluation shown below were implemented. The results are shown in Table 2. Moreover, about Example 4 and Comparative Examples 1 and 3, the measured heat generation profile was shown in FIG.

In addition, the heating appliance of Comparative Example 1 is equivalent to the prior art.

[Measurement of surface temperature]

The temperature was measured in an environment at room temperature of 20°C and humidity of 50%. Using a measuring device conforming to JIS S4100, the first sheet (surface of the user's skin) side of the heating appliance is turned to the outside, and the heat-generating part is placed as the surface of the side opposite to the skin (heating sheet). The sensor was installed and fixed.

The temperature sensor was fixed to the measurement surface with a mesh material (polyester, double Russell dough having a thickness of 8 mm) and a SUS plate (500 g of open plate).

After opening the oxygen barrier bag containing the heating appliance, the temperature was measured at intervals of 10 seconds to measure the temperature for 40 minutes, and the temperature was measured.

In addition, the following numerical values were calculated from the obtained heat generation profile.

Average rate of change (℃/min): After the start of heat generation of the heating element, after the surface temperature (℃) of the heating element reaches the maximum temperature, the surface temperature of the heating element (℃) reaches 45°C. Average rate of change.

·Maximum temperature (℃): The temperature at which the surface temperature (℃) of the heating appliance reaches the maximum temperature after the heating element starts.

·Temperature increase time (minutes): The time from the start of heat generation of the heating element until the surface temperature of the heating appliance reaches 35 ℃ to 45 ℃.

[evaluation]

Heaters were appropriately applied to 10 experienced panelists for 30 minutes before sleep, and the following evaluation items were evaluated based on each criterion, and the obtained evaluation and the average of the values were evaluated. The results are shown in Table 2. In addition, evaluation shows that the lower the numerical value, the better.

·Comfort

1: very pleasant

2: feel good

3: Slightly pleasant

4: neither can be called

5: slightly offended

6: discomfort

7: very unpleasant

·Good to fall asleep

1: It was improved to fall asleep more strongly than when not wearing it.

2: Significantly improved falling asleep than when not wearing.

3: I felt a little better to fall asleep than when I was not wearing it.

4: It was not different from the non-wear.

5: It became impossible to fall asleep more than when not wearing it.

·Wake up and vitality after waking up

1: I was able to wake up more reliably than when I was not wearing it, and I was able to work enthusiastically without getting tired during the day.

2: It was not different from when not worn.

3: It is harder to wake up than when you are not wearing it, and during the day you are tired and have no motivation.

Claims (11)

A heating part containing an oxidizable metal, a carbon component, and water,
A heating appliance that accommodates the heating unit, includes a heating element including a receptor having ventilation properties on at least one surface, and satisfies the following conditions.
Conditions: When the temperature is measured in an environment at room temperature of 20°C and humidity of 50%, after the heating of the heating element starts, the surface temperature (°C) of the heating appliance at a position facing the heating region as the other side of the container is After reaching the maximum temperature, the average rate of change of the surface temperature until the surface temperature (°C) of the heating appliance reaches 45°C is -1.0°C/min or more and -0.5°C/min or less. The method of claim 1,
In the above conditions, the maximum temperature is 60°C or higher and 65°C or lower. The method according to claim 1 or 2,
The heating implement in the above conditions, wherein the time until the surface temperature of the heating appliance reaches from 35°C to 45°C is 1.0 minutes or more and 1.5 minutes or less. The method according to any one of claims 1 to 3,
A warming tool, wherein a product of the air permeability (second/100 ml) of the one side of the container and the basis weight (g/m 2) of the oxidizable metal content is 1.4 × 10 ⁶ or more and less than 3.1 × 10 ⁶ . The method according to any one of claims 1 to 4,
A heating appliance in which a ratio of the basis weight (g/m 2) of the oxidizable metal content to the air permeability (second/100 ml) of the one side of the container is 0.06 or more and 0.17 or less. The method according to any one of claims 1 to 5,
The heating implement, wherein the air permeability of one side of the receptor is 100 seconds/100 ml or more and 10,000 seconds/100 ml or less. The method according to any one of claims 1 to 6,
A heating appliance in which the content of the oxidizable metal is 250 g/m 2 or more and 1200 g/m 2 or less per unit area when viewed from a plan view of the heating part. The method according to any one of claims 1 to 7,
A heating implement in which the sum of the basis weight from the other side of the container to the outermost layer of the heating implement on the side opposite to the heating part is 40 g/m 2 or more and 300 g/m 2 or less. The method according to any one of claims 1 to 8,
A heating implement provided with a heat insulating material covering the heating element on the other side of the container. The method according to any one of claims 1 to 9,
The heating implement, wherein the air permeability of the other side of the receptor is 10,000 seconds/100 ml or more. A heating part containing an oxidizable metal, a carbon component, and water,
It includes a heating element that accommodates the heating unit and includes a receptor having breathability on at least one surface,
The product of the air permeability (sec/100 ml) of the one side of the receptor and the basis weight (g/m 2) of the oxidizable metal content is 1.4×10 ⁶ or more and less than 3.1×10 ⁶ ,
The ratio of the basis weight (g/m2) of the oxidizable metal content to the air permeability (second/100 ml) of one side of the receptor is 0.06 or more and 0.17 or less,
The heating implement, wherein the air permeability of one side of the receptor is 100 seconds/100 ml or more and 10,000 seconds/100 ml or less, and satisfies the following conditions.
Conditions: When the temperature is measured in an environment at room temperature of 20°C and humidity of 50%, after the heating of the heating element starts, the surface temperature (°C) of the heating appliance at a position facing the heating region as the other side of the container is After reaching the maximum temperature, the average rate of change of the surface temperature until the surface temperature (°C) of the heating appliance reaches 45°C is -1.0°C/min or more and -0.5°C/min or less.

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