JP2019024924A - Warming device - Google Patents

Abstract

The present invention provides a heating tool that can provide a good fragrance and stably maintain good heat generation characteristics. A heating tool (1) has a heat generating part (10) comprising an oxidizable metal, a water absorbing agent and water, and a bag body (30) which is at least partially breathable and accommodates the heat generating part (10). The heating tool 1 is (A) one or more selected from sesquiterpene hydrocarbons and derivatives thereof, and a compound having no bicyclo [7.2.0] undecane skeleton, and (B) having a terpene skeleton. The fragrance composition contains an oxygen-containing compound having 10 to 12 carbon atoms, and the content of the component (A) with respect to 100 parts by mass of the oxidizable metal is 0.1 mass. Part to 0.8 parts by mass, and the mass ratio of component (A) to component (B) ((A) / (B)) is 0.1 to 4 parts. [Selection] Figure 1

Description

  The present invention relates to a heating tool.

2. Description of the Related Art In recent years, it has been known that a heating tool that generates heat by an oxidation reaction of an oxidizable metal exhibits a fragrance during use by being given a fragrance.
In order to solve this problem, the heating tool that generates heat by the oxidation reaction of such an oxidizable metal often includes activated carbon, which causes problems such as insufficient scent formation and altered scent. Various ideas have been made.

For example, Patent Document 1 discloses chain monoterpene alcohols, sesquiterpene alcohols, monoterpene alcohols or fats from the viewpoint of improving the fragrance at the time of using a heating tool and making it difficult to cause deterioration of the scent during storage. Disclosed is a heating device flavored with a perfume composition comprising cyclic alcohol acetates, methyl dihydrojasmonate, ionone, or damascon.
Patent Document 2 discloses a heating device in which a predetermined amount of a cooling sensation agent and a sesquiterpene hydrocarbon are held from the viewpoint of providing a good scent at the time of use and further improving the balance between the refreshing strength and the scent strength. It is disclosed.
Patent Document 3 discloses a heating tool that uses a bag having a specific basis weight and contains a specific amount of damasenone, from the viewpoint of providing a lightweight heating tool that exhibits a good scent even when in use. Is disclosed.

JP 2010-51690 A JP 2014-128467 A JP 2013-42963 A

  However, in Patent Documents 1 to 3, there are cases where it is not possible to sufficiently cope with the development of a heating tool that increases the variation of scent or develops a highly savory or deep scent. The inventors of the present invention have intensively studied the development of a new heating tool that exhibits a different fragrance from the heating tools disclosed in Patent Documents 1 to 3. As a result, when a specific scent component is added to a heating tool, there is a new problem that the temperature rise immediately after the start of use may become insufficient between the manufacturing of the heating tool and the actual use. I found it.

  The inventors of the present invention further studied from the viewpoint of solving such problems, and as described above, found a group of scents that affect the temperature increase immediately after the start of use, and combined a specific group of scents with this. We have found that this is effective. In other words, by devising a new scent combination that uses two types of scent components divided into specific groups, and controlling the content ratio, the good heat generation characteristics of the heating device are stably maintained, And it discovered that a favorable fragrance was obtained and completed this invention.

That is, the present invention
A heat generating part comprising an oxidizable metal, a water absorbing agent and water;
A bag body having air permeability at least in part and accommodating the heat generating portion;
A heating device having
The heating tool is
(A) one or more selected from sesquiterpene hydrocarbons and derivatives thereof, a compound having no bicyclo [7.2.0] undecane skeleton (B) having a terpene skeleton and having 10 carbon atoms It is perfumed with a fragrance composition containing an oxygen-containing compound that is ~ 12,
Content of a component (A) is 0.1 mass part or more and 0.8 mass part or less with respect to 100 mass parts of said oxidizable metals, and the mass ratio of the component (A) with respect to a component (B) ((A ) / (B)) provides a heating tool of 0.1 or more and 4 or less.

  According to the present invention, it is possible to provide a heating tool in which a good aroma is obtained and a good exothermic property is stably maintained.

It is sectional drawing which showed typically the heating tool which concerns on embodiment. It is sectional drawing which showed typically the heat generating part which concerns on embodiment. It is a figure explaining the method to manufacture the heat generating part which concerns on embodiment. It is a top view which shows the steam heating tool which is an example of the heating tool of this invention. It is a disassembled perspective view of the steam heating tool shown in FIG. It is sectional drawing which follows the longitudinal direction of the steam heating tool shown in FIG. It is sectional drawing which shows another example of a steam heating tool.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

In the present embodiment, the air permeability is a value measured by JIS P8117, and is defined as the time required 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 a Oken type air permeability meter or a measuring device according to it.

  FIG. 1 is a schematic cross-sectional view showing an example of the heating tool of the present invention. The heating tool 1 includes a heat generating unit 10 including an oxidizable metal, a water absorbing agent, and water, and a bag body 30 that houses the heat generating unit 10. The heating tool 1 is scented with a fragrance composition.

  The heating tool 1 generates heat by an oxidation reaction of an oxidizable metal and imparts a sufficient heating effect, and can have a performance of an exothermic temperature of 38 to 74 ° C. in measurement based on JIS standard S4100. The heating tool 1 may be a steam heating tool accompanied by the generation of water vapor, or may be a so-called disposable body warmer that generates heat without substantially generating water vapor. Since the heating tool 1 is scented by the fragrance composition, the fragrance composition aromas together with heat when used.

  FIG. 2 is a cross-sectional view schematically showing the heat generating portion 10 according to the embodiment. As shown in FIG. 2, the heat generating part 10 is formed by laminating a base material layer 13, a heat generating layer 11, and a water retention layer 12 in this order. That is, in the present embodiment, the heat generating part 10 has a so-called sandwich structure in which the heat generating layer 11 is sandwiched between the base material layer 13 and the water retention layer 12. Hereinafter, the details of each layer of the heat generating portion 10 will be described with reference to FIG.

  As shown in FIG. 2, the heat generating layer 11 contains an oxidizable metal (21 in FIG. 2), a water absorbing agent (22 in FIG. 2), and water.

  The heat generating layer 11 includes a heat generating composition including at least an oxidizable metal, a water absorbing agent, and water.

  The oxidizable metal is a metal that generates heat of oxidation reaction, and examples thereof include one or more powders and fibers selected from iron, aluminum, zinc, manganese, magnesium, and calcium. Among these, iron powder is preferable from the viewpoints of handleability, safety, manufacturing cost, storage stability, and stability. Examples of the iron powder include one or more selected from reduced iron powder and atomized iron powder.

When the oxidizable metal is a powder, the average particle size is preferably 10 to 200 μm and more preferably 20 to 150 μm from the viewpoint that the oxidation reaction is efficiently performed. The particle size of the oxidizable metal refers to the maximum length in the form of powder, and is measured by classification using a sieve, dynamic light scattering method, laser diffraction method or the like.
From the same viewpoint, the average particle diameter of the oxidizable metal is preferably 10 μm or more, and more preferably 20 μm or more. The average particle size is preferably 200 μm or less, and more preferably 150 μm or less.

The content of the oxidizable metal, expressed as the basis weight is preferably from 100 to 3000 g / ^{m 2,} and more preferably 200~1500g / ^{m 2.} Thereby, the heat generating temperature of the heat generating part 10 can be raised to a desired temperature.
From the same viewpoint, the content of the oxidizable metal is expressed as basis weight, preferably 100 g / m ² or more, and more preferably 200 g / m ² or more. Further, it is preferably 3,000 g / ^{m 2} or less, and more preferably 1500 g / ^{m 2} or less.
In addition, content of the iron powder in the heat generating part 10 can be calculated | required with the ash content test according to JISP8128, or a thermogravimetric measuring device. In addition, it can be quantified by a vibration sample type magnetization measurement test or the like using the property that magnetization occurs when an external magnetic field is applied.

  The water-absorbing agent has water retention ability and contains at least a carbon component. In addition to the carbon component, for example, one or more selected from fiber materials, water-absorbing polymers, and water-absorbing powders can be used.

  The carbon component has water retention ability, oxygen supply ability, and catalytic ability. For example, one or more kinds selected from activated carbon, acetylene black, and graphite can be used. Activated carbon is preferably used from the viewpoint of being easily adsorbed and keeping the moisture of the heat generating layer 11 constant. More preferably, one kind or two or more kinds of fine powder or small granular materials selected from coconut shell charcoal, wood charcoal, and peat charcoal are used. Of these, wood charcoal is more preferable from the viewpoint of keeping moisture in the heat generating layer 11 constant and providing good heat generation characteristics.

The carbon component has an average particle diameter of 10 to 200 μm, not only from the viewpoint of being uniformly mixed with the oxidizable metal, but also from the viewpoint of keeping the moisture content in the heat generating layer 11 optimal and providing good heat generation characteristics. The average particle size is more preferably 12 to 100 μm.
From the same viewpoint, the carbon component preferably has an average particle size of 10 μm or more, more preferably 12 μm or more. Further, the carbon component preferably has an average particle size of 200 μm or less, and more preferably 100 μm or less.
The average particle size of the carbon component refers to the maximum length in the form of powder and is measured by a dynamic light scattering method, a laser diffraction method, or the like. The carbon component is preferably used in a powder form, but a form other than the powder form can also be used, for example, a fibrous form can be used.

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

  Examples of the water-absorbing polymer include hydrophilic polymers having a crosslinked structure capable of absorbing and retaining a liquid having a weight 20 times or more of its own weight.

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

The content of the water-absorbing agent is preferably 0.3 to 20 parts by mass, more preferably 1 to 15 parts by mass, and 3 to 13 parts by mass with respect to 100 parts by mass of the oxidizable metal. More preferably. By doing so, moisture necessary for sustaining the oxidation reaction can be accumulated in the heat generating portion 10 obtained. Further, a sufficient supply of oxygen to the heat generating portion 10 is obtained, and high heat generation efficiency is obtained. In addition, since the heat capacity of the heat generating portion 10 with respect to the heat generation amount obtained can be kept small, the heat generation temperature rises and a desired temperature rise can be obtained.
The content of the water-absorbing agent, expressed as the basis weight is preferably from 4~290g / ^{m 2,} and more preferably 7~160g / ^{m 2.}
In addition, it is preferable that it is 0.3 mass part or more with respect to 100 mass parts of oxidizable metals, and, as for content of a water absorbing agent, it is more preferable that it is 1 mass part or more, and it is 3 mass parts or more. Is more preferable. Moreover, it is preferable that it is 20 mass parts or less with respect to 100 mass parts of oxidizable metals, and, as for content of a water absorbing agent, it is more preferable that it is 15 mass parts or less, and it is further 13 mass parts or less. preferable.
The content of the water-absorbing agent is preferably 4 g / m ² or more, more preferably 7 g / m ² or more, and preferably 290 g / m ² or less, expressed as basis weight. 160 g / m ² or less is more preferable.

From the viewpoint of controlling the moisture in the heat generating layer 11, the content of the carbon component in the water absorbing agent is preferably 90% by mass or more, more preferably 95% by mass or more, with respect to the total mass of the water absorbing agent. More preferably, it is 98 mass% or more, and it is still more preferable that a water absorbing agent is only a carbon component.
Further, in the water-absorbing agent, the content of the water-absorbing polymer is preferably 10% by mass or less, more preferably 5% by mass or less, and further preferably 2% by mass or less with respect to the entire water-absorbing agent. . Since the heat capacity of the heat generating layer 11 with respect to the obtained heat generation amount can be kept small, it is more preferable that the heat generating layer 11 does not contain a water-absorbing polymer from the viewpoint that the heat generation temperature rises and a desired temperature rise is obtained. .

  In the heat generating layer 11, the mass ratio of the water content to the water absorbent content (water / water absorbent) is preferably 0.8 to 13, more preferably 1 to 12, and 1.5. More preferably, it is 10-10. By doing so, the air permeability of the heat generating portion 10 is sufficiently ensured, so that the heat generation layer 11 with sufficient oxygen supply and high heat generation efficiency can be obtained. Further, since the heat capacity of the heat generating layer 11 with respect to the heat generation amount obtained can be kept small, the heat generation temperature rises and a desired temperature rise is obtained.

  As shown in FIG. 2, in this embodiment, the water retention layer 12 is formed from a water absorbent sheet 102.

  The content of water contained in the water retention layer 12 is preferably 10 to 45% by mass, more preferably 12 to 40% by mass, and 13 to 30% by mass of the maximum water absorption amount of the water retention layer 12. However, when the heat generating part 10 is manufactured, even if the heat generating composition is filled in one heat generating part 10 in a large amount for some reason or is unevenly distributed in a specific location, abnormal heat generation is prevented and good. It is further preferable in that the heat generation characteristics can be stably obtained.

The maximum water absorption can be measured as follows.
The measurement method described in JIS L1906 can be used as the maximum water absorption amount (W _max ) of the water retention layer 12 as follows. Specifically, the mass (W ₀ ) of the water retention layer 12 is measured, the water retention layer 12 is immersed in a 5% by mass sodium chloride aqueous solution for 5 minutes, then taken out with tweezers and left suspended in the air for 1 minute. After dipping or removing moisture that cannot be held, the mass (W ₁ ) is measured, and the maximum water absorption (W _max ) is calculated from the following equation.
W _max = W ₁ −W ₀

  The water-retaining layer 12 is preferably water-absorbing capable of absorbing and holding 10 to 45% by mass of the maximum amount of water absorption, and may or may not be breathable, but is preferably breathable.

  The air permeability of the water retention layer 12 in a state of absorbing 10 to 45% by mass of the maximum water absorption is preferably 500 seconds / 100 ml or less, more preferably 1 to 300 seconds / 100 ml. By setting such an air permeability, the air permeability of the heat generating portion 10 is sufficiently ensured, so that sufficient oxygen supply is obtained, high heat generation efficiency is obtained, and the oxidation reaction of the oxidizable metal is improved. Moreover, it may be possible to generate a large amount of water vapor. Moreover, it is more preferable that it is 300 second / 100 ml or less, and it is further more preferable that it is 1 second / 100 ml or more from a viewpoint of preventing an excessive temperature rise.

Moreover, in this embodiment, the water retention layer 12 is the water absorption sheet | seat 102 containing a component (a) fiber material and a component (b) water absorbing polymer.
The water retention layer 12 may be composed of a sheet containing the component (a), for example, a single fiber sheet, or two or more layers may be laminated. Specific examples of the fiber sheet include paper, non-woven fabric, or a laminate of paper and non-woven fabric manufactured from a fiber material to be described later. Specifically, the sheet containing the component (a) may be a sheet material such as a non-water-absorbing material such as polyethylene fiber, polypropylene fiber, polyethylene sheet, and polypropylene sheet, or a sheet material such as non-woven fabric, which is a laminated or laminated fiber material. It may be a sheet material such as paper or nonwoven fabric obtained by laminating or mixing a fiber material such as pulp fiber or rayon fiber with another fiber material. Use of the sheet containing the component (a) in the water retention layer 12 can appropriately control the content of water contained in the water retention layer 12, keep the moisture content in the heat generation layer 11 optimal, and provide good heat generation characteristics. This is preferable.

The water retention layer 12 may further contain a component (b). When the water retention layer 12 includes the component (b), the form of the water retention layer 12 can be exemplified as follows.
(I) A sheet in which component (a) and component (b) are uniformly mixed.
(Ii) The component (b) is disposed between the same or different sheets containing the component (a).
(Iii) Component (b) is dispersed to form a sheet.
Among these, preferred is the above-mentioned form (ii) from the viewpoint that the moisture content of the heat generating layer 11 can be easily controlled. In addition, the water retention layer 12 in the form of (ii) is, for example, after the component (b) is uniformly sprayed on a sheet containing the component (a) and sprayed with an amount of 200 g / m ² from above. Further, the same or different sheet containing the component (a) is laminated thereon, pressed at 100 ± 0.5 ° C. and a pressure of 5 kg / cm ² , and dried until the water content becomes 5% by mass or less. And can be manufactured.

  As the component (a), both hydrophilic fibers and hydrophobic fibers can be used, but it is preferable to use hydrophilic fibers, and among them, the use of cellulose fibers promotes moisture movement to the water retention layer 12, It is more preferable from the viewpoint of keeping the moisture content in the heat generating layer 11 optimal and providing good heat generation characteristics. As the cellulose fiber, chemical fiber (synthetic fiber) or natural fiber can be used.

  As chemical fiber among cellulose fibers, for example, rayon or acetate can be used. On the other hand, natural fibers among cellulose fibers include, for example, various plant fibers, wood pulp fibers, non-wood pulp fibers, cotton fibers, hemp fibers, wheat straw fibers, hemp fibers, jute fibers, kapok fibers, palm fibers, and igusa. One type or two or more types selected from fibers can be used. Among these cellulose fibers, it is preferable to use wood pulp fibers from the viewpoint of keeping the moisture content in the heat generating layer 11 optimal and providing good heat generation characteristics.

  The fiber length of various fiber materials is preferably 0.5 to 6 mm, and more preferably 0.8 to 4 mm. Among these, the fiber material preferably has a fiber length of 0.5 mm or more, and more preferably 0.8 mm or more. The fiber material preferably has a fiber length of 6 mm or less, and more preferably 4 mm or less.

In addition to the hydrophilic fiber, the water retention layer 12 may contain a hydrophobic fiber, especially a heat-fusible fiber, if necessary. The content of the heat-fusible fiber is preferably 0.1 to 10% by mass, and more preferably 0.5 to 5% by mass with respect to the total amount of fibers in the water retention layer 12.
From the same viewpoint, the content of the heat-fusible fiber is preferably 0.1% by mass or more, and more preferably 0.5% by mass or more with respect to the total amount of fibers in the water retention layer 12. Further, the content of the heat-fusible fiber is preferably 10% by mass or less, and more preferably 5% by mass or less with respect to the total amount of fibers in the water retaining layer 12.

As the component (b), the content of water contained in the water retention layer 12 by using a hydrophilic polymer having a crosslinked structure capable of absorbing and retaining a liquid having a weight 20 times or more of its own weight, as in the case of the component (a). Is preferable from the viewpoint of appropriately controlling and giving good heat generation characteristics.
As a shape of a component (b), 1 type, or 2 or more types selected from spherical shape, lump shape, grape bunch shape, and fiber shape are mentioned. The average particle size of component (b) is preferably 1-1000 μm, more preferably 10-500 μm. The average particle diameter of the component (b) is preferably 1 μm or more, and more preferably 10 μm or more. The average particle size of component (b) is preferably 1000 μm or less, and more preferably 500 μm or less.
The average particle size of component (b) is measured by a dynamic light scattering method, a laser diffraction method, or the like.

  Specific examples of the component (b) include, for example, starch, crosslinked carboxymethylated cellulose, a polymer or copolymer of acrylic acid or an alkali metal acrylate, polyacrylic acid and a salt thereof, and a polyacrylate graft weight. 1 type (s) or 2 or more types selected from coalescence are mentioned. Among them, it is appropriate to use polyacrylic acid and a salt thereof, and a polyacrylate graft polymer such as a polymer or a copolymer of acrylic acid or an alkali metal salt of acrylic acid, so that the content of water contained in the water retention layer 12 is appropriate. From the viewpoint of giving good heat generation characteristics.

The proportion of the component (b) in the water retention layer 12 is preferably 10 to 70% by mass, and further 20 to 65% by mass in a dry state, prompting quick water movement to the water retention layer 12. From the viewpoint of appropriately controlling the content of water contained in the water retaining layer 12 and giving good heat generation characteristics, it is more preferable.
From the same viewpoint, the proportion of the component (b) in the water retention layer 12 is preferably 10% by mass or more, more preferably 20% by mass or more in the dry state, and on the other hand, 70% by mass or less. It is preferable that the content is 65% by mass or less.

The water retention layer 12 preferably has a basis weight of 20 to 200 g / m ² in a dry state from the viewpoint of appropriately controlling the content of water contained in the water retention layer 12 and providing good heat generation characteristics. more preferably to 150 g / ^{m 2,} further preferably 50~140g / ^{m 2.}
The basis weight of the component (b) contained in the water retention layer 12 is 5 to 150 g / m ^{2 in} a dry state from the viewpoint of appropriately controlling the content of water contained in the water retention layer 12 and giving good heat generation characteristics. it is preferably, more preferably from 10 to 100 g / ^{m 2,} further preferably 30~90g / ^{m 2.}

As shown in FIG. 2, the base material layer 13 is formed from the base material sheet 130 in the present embodiment.
The base material layer 13 is used as a base material for supporting the heat generating part 10 when the heat generating part 10 is formed. Although it can set suitably as the base material layer 13 according to the use of the heating tool 1 manufactured, the sheet | seat comprised by the sheet | seat containing a fiber material and a material with poor water absorption is mentioned, for example. Specific examples of the fiber sheet include paper, non-woven fabric, or a laminate of paper and non-woven fabric manufactured from a fiber material to be described later. The fiber material may be a material with poor water absorption such as polyethylene fiber or polypropylene fiber, or may be a water absorbent material such as pulp fiber or rayon fiber. Examples of the sheet composed of a material having poor water absorption include synthetic resin films such as polyethylene film, polyethylene terephthalate film, and Teflon (registered trademark) film, and sheets containing the above-described fiber materials. Are laminated or laminated sheets.
In the present invention, a sheet composed of a material having poor water absorption is preferable, and a sheet obtained by laminating or laminating a synthetic resin film on a sheet containing a fiber material is more preferable.

The heating unit 10 according to the present embodiment has been described with reference to FIG. 2, but the structure of the heating unit 10 is not limited to this.
For example, the heat generation layer 11 may be formed on both surfaces of the water retention layer 12.
For example, the water retention layer 12 may be formed of a first water absorbent sheet and a second water absorbent sheet. In this case, the heat generating part 10 can take a so-called sandwich structure in which the heat generating layer 11 is sandwiched between the first water absorbing sheet and the second water absorbing sheet. The first water absorbent sheet and the second water absorbent sheet may be made of the same material, or may be made of different materials.
Moreover, in the state in which the content of water contained in the water retention layer 12 is 10 to 45% by mass, the first water absorbent sheet and the second water absorbent sheet both have an air permeability of 500 seconds / 100 ml or less. preferable. The lower limit is, for example, 1 second / 100 ml.

  The exothermic part 10 can further contain a reaction accelerator. The reaction accelerator is used for the purpose of maintaining the oxidation reaction of the oxidizable metal. In addition, by using a reaction accelerator, it is possible to accelerate the oxidation reaction by destroying the oxide film formed on the oxidizable metal with the oxidation reaction. Examples of the reaction accelerator include one or more selected from alkali metals, alkaline earth metal sulfates, and chlorides. Above all, it is selected from various chlorides such as sodium chloride, potassium chloride, calcium chloride, magnesium chloride, ferrous chloride, ferric chloride, and sodium sulfate because of its excellent conductivity, chemical stability, and production cost. It is preferable to use 1 type (s) or 2 or more types.

The content of the reaction accelerator in the exothermic part 10 is preferably 2 to 15 parts by mass with respect to 100 parts by mass of the oxidizable metal from the viewpoint that a sufficient exothermic amount lasts for a long time, and 3 to 13 parts by mass. It is more preferable that
From the same viewpoint, the content of the reaction accelerator in the heat generating part 10 is preferably 2 parts by mass or more and more preferably 3 parts by mass or more with respect to 100 parts by mass of the oxidizable metal. Moreover, it is preferable that it is 15 mass parts or less with respect to 100 mass parts of oxidizable metals, and, as for content of the reaction accelerator in the heat-emitting part 10, it is more preferable that it is 13 mass parts or less.

  The exothermic part 10 can further contain a thickener. As the thickener, a substance that absorbs moisture and increases the consistency or imparts thixotropic properties can be used. Examples of the thickener include alginates such as sodium alginate, gum arabic, tragacanth gum, locust bean gum, guar gum, gum arabic, carrageenan, agar, xanthan gum and the like; dextrin, pregelatinized starch, processed Thickeners such as starch for starch; cellulose derivative thickeners such as carboxymethylcellulose, ethyl acetate, hydroxyethylcellulose, hydroxymethylcellulose or hydroxypropylcellulose; metal soap thickeners such as stearate; minerals such as bentonite One type or a mixture of two or more types selected from system thickeners and the like can be used. Among them, polysaccharide thickeners are preferable from the viewpoint of good coating performance, polysaccharide thickeners having a molecular weight of 1 million to 50 million are more preferable, and polysaccharide thickeners having a molecular weight of 2 million to 40 million. An agent is more preferable, and xanthan gum is preferable from the viewpoint of having good coating performance and salt resistance.

  The content of the thickener in the heat generating part 10 is preferably 0.05 to 5 parts by mass, more preferably 0.1 to 4 parts by mass with respect to 100 parts by mass of the oxidizable metal. . By setting it as this range, solid content, such as an oxidizable metal and a water absorbing agent, can be disperse | distributed stably. Moreover, thixotropy can be imparted and the coating performance can be further improved.

  The heat generating part 10 can also contain a surfactant, a drug, a flocculant, a colorant, a fibrous material, a paper strength enhancer, a pH control agent, a bulking agent, and the like as necessary.

FIG. 3 is a diagram for specifically explaining an example of a method for manufacturing the heat generating portion 10.
First, an exothermic powder water dispersion 302 containing an oxidizable metal, a water absorbing agent, and water is prepared in the coating tank 301. The exothermic powder water dispersion 302 may be stirred by the stirrer 303 to more uniformly disperse the oxidizable metal, the water absorbing agent, and the water-insoluble component. The exothermic powder water dispersion 302 may be prepared by mixing all of the above-mentioned components at once. However, an aqueous solution is prepared by dissolving a reaction accelerator in advance in a thickener dissolved in water. Then, a premixed oxidizable metal and water-absorbing agent may be mixed with the aqueous solution.

Next, the exothermic powder water dispersion 302 is pumped up to the die head 305 by the pump 304. The heated exothermic powder water dispersion 302 is applied to the water absorbent sheet 102 while being pressed and extruded using the die head 305. At this time, the coating basis weight of the exothermic powder aqueous dispersion 302 is preferably in a 160~4,800g / ^{m 2,} and more preferably a 320~2,200g / ^{m 2.}

  In addition, in FIG. 3, although the coating by die coating was illustrated, the coating method is not limited to this, For example, roll coating, screen printing, roll gravure, knife coding, a curtain coater, etc. can also be used. .

  By the above operation, a continuous long object including the heat generating layer 11 and the water retaining layer 12 is obtained, and the heat generating portion 10 is formed by cutting this into an arbitrary size.

  In the above-described method, means for maintaining a non-oxidizing atmosphere may be used as necessary in order to suppress oxidation of the oxidizable metal during the manufacturing process.

Next, the bag body 30 that houses the heat generating portion 10 will be described.
At least a part of the bag body 30 is breathable, but at least a part thereof is preferably a breathable sheet. The basis weight of the bag body 30 is 20 g / m ² or more from the viewpoints of keeping warm, preventing condensation during storage, maintaining the required fragrance intensity for a long time, and preventing the inside from being seen through. Is preferably 25 g / m ² or more, and more preferably 30 g / m ² or more. Moreover, it is preferable that the basic weight of the bag body 30 is 90 g / m < ² > or less from the viewpoint of reducing the thickness and weight of the heating tool 1 and improving the lightness at the time of use and stably obtaining a good fragrance. 85 g / m ² or less, more preferably 80 g / m ² or less.
As such a sheet, for example, a nonwoven fabric, a knitted fabric, a breathable sheet (for example, a porous sheet, a plastic film having a vent), a laminated sheet obtained by laminating a nonwoven fabric and a breathable sheet, or a knitted fabric and a breathable sheet. A laminated sheet laminated with a conductive sheet can be used.

  In FIG. 1, the example which comprises the bag body 30 by sealing the peripheral part of the 1st bag body sheet | seat 30a and the 2nd bag body sheet | seat 30b is shown. The first bag sheet 30a and the second bag sheet 30b may be of the same type or different types. Either one of the first bag sheet 30a and the second bag sheet 30b may be breathable, or both may be breathable. If both are breathable, one of them may be less breathable than the other.

  The basis weight of the first bag sheet 30a and the second bag sheet 30b is such that the effect of the present invention is fully exerted and the temperature on the side far from the application site such as skin from the warmth and feeling during use. It is preferable that the two bag sheets 30b are the same as or smaller than the first bag sheet 30a on the side close to the application site.

  The air permeability of the first bag sheet 30a and the second bag sheet 30b is such that the second bag sheet 30b on the side far from the skin is from the viewpoint of sufficiently exerting the effects of the present invention and exhibiting good heat generation characteristics. It is preferable that it is the same as or lower than the first bag sheet 30a on the side close to the skin. Thereby, it becomes possible to further suppress the influence of the water absorbing agent in the heat generating part 10, particularly the carbon component on the fragrance composition. That is, the air permeability of the second bag sheet 30b is preferably at least twice the air permeability of the first bag sheet 30a, more preferably at least 5 times, and even more preferably at least 10 times. .

Specifically, the second bag sheet 30b may be less breathable or non-breathable than the first bag sheet 30a.
On the other hand, the 1st bag body sheet 30a may have air permeability so that permeation of air and water vapor is possible. The air permeability of the first bag sheet 30a is preferably 6,000 seconds / 100 ml or less, regardless of whether the second bag sheet 30b is non-breathable or non-breathable. It is preferably 000 seconds / 100 ml or less.

Next, the fragrance | flavor composition used for the heating tool 1 is demonstrated.
Component (A) is a compound having one or more selected from sesquiterpene hydrocarbons and derivatives thereof and having no bicyclo [7.2.0] undecane skeleton. The component (A) was first identified by the present inventors as a group of scents that affect the temperature increase immediately after the use of the heating tool 1 is started.
A sesquiterpene is a compound having 15 carbon atoms composed of three isoprenes. Examples of the sesquiterpene hydrocarbons and derivatives thereof include sesquiterpene hydrocarbons, sesquiterpene alcohols, sesquiterpene ethers, sesquiterpene esters, and sesquiterpene methyl ketones.

  Examples of the sesquiterpene hydrocarbon include isolongifolene, farnesene, longifolene, bizaborene, santalen, gingivelene, curcumene, kadinene, sesquibenien, cedrene, farnesene and the like.

  Examples of the sesquiterpene alcohol include chain sesquiterpene alcohols such as farnesol and nerolidol: cyclic sesquiterpene alcohols such as santalol, cedrol, vetiverol (mixture), and patchouli alcohol.

  Moreover, for example, sesquiterpene ethers such as cedolyl ether, sesquiterpene esters such as vetiberyl acetate, farnesyl acetate, cedolyl acetate, and sesquiterpene methyl ketones such as acetyl cedrene.

These may be used alone or in combination of two or more.
Among these, from the viewpoint of maintaining a good scent at the time of use of the heating device 1, two or more of sesquiterpene hydrocarbon, sesquiterpene alcohol, sesquiterpene ether, sesquiterpene ester, and sesquiterpene methyl ketone are combined. It is preferable to combine sesquiterpene hydrocarbon and sesquiterpene methyl ketone. In addition, from the viewpoint of obtaining a good forest-like fragrance, acetyl cedrene, isolongifolene, and farnesene are more preferable.

The component (B) is an oxygen-containing compound having a terpene skeleton and having 10 to 12 carbon atoms, and an effective component for solving the problems caused by the component (A) being included in the heating tool 1 It is. That is, the present inventors have identified the component (B) for the first time as a group of scents that can solve the problem by combining with the component (A).
For example, monoterpene alcohols such as linalool, ethyl linalool, dihydrolinalol, nerol, myrsenol, lavandulol, citronellol, geraniol, menthol, terpineol, borneol, etc .; monoterpene aldehydes such as citronellal, citral, safranal, ferrandaral, perylaldehyde Terpene alcohol acetates such as linalyl acetate and geranyl acetate; monoterpene ketones such as camphor, menthone and carbomentone; monoterpenes such as rose oxide, linalool oxide, mentfuran 1,8-cineol and 1,4-cineol Ethers; terpene carboxylic acids such as citronellic acid. These may be used alone or in combination of two or more. Among these, from the viewpoint of obtaining stable and good heat generation characteristics when using the heating tool 1, monoterpene alcohols are preferable, and at least one or two selected from linalool, ethyl linalool, and citronellol are preferable. The above is more preferable.

Here, terpenes are generally polymers of isoprene, and are classified into monoterpenes, sesquiterpenes, diterpenes and the like according to the number of isoprene units.
That is, the component (A) is a sesquiterpene, which is a compound having 15 carbon atoms composed of three isoprenes and excluding a compound having a bicyclo [7.2.0] undecane skeleton. Examples of the compound having a bicyclo [7.2.0] undecane skeleton include caryophyllene. Component (B) is a compound having a structure having isoprene as a structural unit, having 10 to 12 carbon atoms, and having at least one oxygen atom.

  Component (A) and component (B) are generally available fragrance compositions. Moreover, a component (A) and a component (B) may be used with the form of the essential oil containing a component (A) or a component (B).

  Examples of the essential oil containing the component (A) or the component (B) include lavender oil, pettigren oil, neroli oil, clary sage oil, rosewood oil, patchouli oil, vetiver oil, cedarwood oil, and sandalwood oil. Various essential oils such as eucalyptus oil, bergamot oil, mint oil, rose oil, peppermint oil, spearmint oil can be exemplified. These may be used alone or in combination of two or more.

In the heating tool 1, the content of the component (A) with respect to 100 parts by mass of the oxidizable metal is 0.1 parts by mass or more and 0.8 parts by mass or less.
The content of the component (A) with respect to 100 parts by mass of the oxidizable metal is preferably 0.20 parts by mass or more, more preferably from the viewpoint of obtaining a good fragrance and heat generation during use of the heating tool 1 in a balanced manner. Is 0.28 parts by mass or more.
On the other hand, the content of the component (A) with respect to 100 parts by mass of the oxidizable metal is preferably 0.65 parts by mass or less, more preferably from the viewpoint of suppressing a decrease in heat generation temperature when the heating tool 1 is used. Is 0.50 parts by mass or less.
In addition, the content of the component (A) with respect to 100 parts by mass of the oxidizable metal is preferably 0.20 parts by mass or more and 0.65 from the viewpoint of obtaining a good balance between good fragrance and heat generation when the heating tool 1 is used. It is not more than part by mass, and more preferably not less than 0.28 part by mass and not more than 0.50 part by mass.

In the heating tool 1, the mass ratio ((A) / (B)) of the component (A) to the component (B) is 0.1 or more and 4 or less.
(A) / (B) is preferably 0.25 or more, more preferably 0.45 or more, from the viewpoint of obtaining a good fragrance and heat generation during use of the heating tool 1 in a well-balanced manner.
On the other hand, (A) / (B) is preferably 1.5 or less, more preferably 0.8 or less, from the viewpoint of suppressing a decrease in heat generation temperature when the heating device 1 is used.
Moreover, (A) / (B) is preferably from 0.25 to 1.5, more preferably from the viewpoint of obtaining a good aroma and heat generation during use of the heating tool 1 in a well-balanced manner. 45 or more and 0.8 or less.

The content of the component (A) with respect to 100 parts by mass of the carbon component is preferably 1.2 parts by mass or more, more preferably, from the viewpoint of obtaining a good fragrance and heat generation during use of the heating tool 1 in a balanced manner. The amount is 2.4 parts by mass or more, and more preferably 3.3 parts by mass or more.
On the other hand, the content of the component (A) with respect to 100 parts by mass of the carbon component is preferably 10 parts by mass or less, more preferably 8 parts by mass, from the viewpoint of suppressing a decrease in heat generation temperature when the heating tool 1 is used. Or less, more preferably 6.5 parts by mass or less.
In addition, the content of the component (A) with respect to 100 parts by mass of the carbon component is preferably 1.2 parts by mass or more and 10 parts by mass or less from the viewpoint of obtaining a good fragrance and heat generation during use of the heating tool 1 in a balanced manner. Yes, more preferably from 2.4 parts by weight to 8 parts by weight, and even more preferably from 3.3 parts by weight to 6.5 parts by weight.

  From the viewpoint of obtaining a good balance between good aroma and heat generation when the heating tool 1 is used, the total mass part of the component (A) and the component (B) with respect to 100 parts by mass of the oxidizable metal is preferably 0.00. It is 70 mass parts or more and 1.7 mass parts or less, More preferably, it is 0.80 mass parts or more and 1.5 mass parts or less.

  The total mass part of the content of the component (A) and the component (B) with respect to 100 mass parts of the carbon component is preferably 8.0 mass from the viewpoint of obtaining a good fragrance and heat generation in use of the heating device 1 in a balanced manner. Part to 20 parts by mass, more preferably 10 parts to 18 parts by mass.

  The fragrance composition may exhibit any scent as long as it contains the component (A) and the component (B), but has a good fragrance such as a forest tone when the heating tool 1 is used. From the viewpoint of effective expression, it is preferable that the fragrance composition contains a relatively large amount of the component (A). Examples of the fragrance obtained when the fragrance composition contains a relatively large amount of the component (A) include woody fragrances such as forest fragrance and cypress fragrance. In other words, it can be said that a fragrance composition including a woody scent such as a forest scent or a hinoki scent contains a relatively large amount of the component (A).

  The content of the component (A) with respect to the entire fragrance composition is preferably 5 to 60% by mass from the viewpoint of stably obtaining good exothermic characteristics while effectively expressing good aroma such as forest tone. Yes, more preferably 7 to 50% by mass, and even more preferably 10 to 40% by mass.

  The content of the component (B) with respect to the whole fragrance composition is preferably 5 to 60% by mass from the viewpoint of stably obtaining good exothermic characteristics while effectively expressing a good fragrance such as forest tone. -50 mass% is more preferable.

In addition, content of the component (A) and the component (B) in the heating tool 1 was quantified by gas chromatograph mass spectrometry (GC-MS) with respect to the content at the time of flavoring and the extract extracted by the solvent extraction method. Since the consistency with the value is high, the extract analyzed by the solvent extraction method is determined by quantifying by GC-MS.
Specifically, the heating tool 1 and an amount of solvent in which the entire heating tool 1 is immersed are placed in a sealed container and left at room temperature for 9 hours. Thereafter, the solvent in the sealed container is quantified by GC-MS.
Here, the solvent is not particularly limited as long as the components (A) and (B) are easily eluted from the heating element, and examples thereof include ethanol, acetone, and dichloromethane, with dichloromethane being preferred. For example, a capillary column DB-WAX (manufactured by J & W, length 60 m, diameter 0.25 mm, film thickness 0.25 μm) can be used as the GC-MS column.
The analysis conditions of GC-MS may be any as long as each fragrance component can be measured. For example, when the gas chromatograph is 6890N type manufactured by Agilent, and the mass spectrometer is 5973 type manufactured by Agilent, injection is performed. The temperature is 250 ° C., the column flow rate is 0.9 ml / min, the initial temperature is 40 ° C., the temperature is increased to 6 ° C./min up to 70 ° C., 2 ° C./min. Measure under the condition of holding the minute.
In addition, when the heating tool 1 is accommodated in the packaging material mentioned later, the component (A) and component (B) in the heating tool 1 may adhere to a packaging material between manufacture and use. For this reason, when the heating tool 1 is accommodated in the packaging material, the component (A) and the component (B) adhering to the surface of the containing agent are also extracted by the solvent extraction method, analyzed by GC-MS, The total amount of the component (A) and the component (B) extracted from the tool 1 can be set as the content of the component (A) and the component (B) in the heating tool 1.
For component (A) and component (B) adhering to the surface of the packaging material, 20-50 ml of solvent is dropped into the packaging material, and the packaging material is sufficiently wetted with the dropped solvent, and then the packaging material is sealed. And left at room temperature for 9 hours. Then, GC-MS is performed about the solvent in a packaging material.

The fragrance composition can further comprise other fragrances.
For example, except for component (A) and component (B), hydrocarbon compounds, aliphatic and aromatic alcohols, aliphatic and aromatic aldehydes, aliphatic and aromatic ketones, cyclic or acyclic ethers, aliphatic and aromatic Examples include esters.

  Examples of the hydrocarbon compound include myrcene, ocimene, limonene, pinene, terpinene, terpinenolen, pinene, and derivatives thereof.

  Examples of the aliphatic and aromatic alcohols include aliphatic alcohols such as pentanol, hexanol, 2,6-nonadienol, and 2,4-decadienol; benzyl alcohol, phenylethyl alcohol, pamplefur (2-methyl-4- And aromatic alcohols such as phenylpentanol), dimethylbenzyl carbinol, and phenylhexanol (3-methyl-5-phenylpentanol).

  Aliphatic and aromatic aldehydes include, for example, aliphatic aldehydes such as acetaldehyde, hexanal, decanal, and 2,4-octadienal; fragrances such as benzaldehyde, cinnamyl aldehyde, vanillin, ethyl vanillin, furfural, and heliotropin Family aldehydes.

  Examples of aliphatic and aromatic ketones include aliphatic ketones such as 2-heptanone, 2-undecanone, 1-octen-3-one, and 2,3-pentadione; cycloten, maltol, and ethyl maltol, methyl dihydrojasmonate And aromatic ketones such as raspberry ketone.

  Examples of the cyclic or acyclic ether include cyclic ethers such as theaspirane.

  Examples of the aliphatic and aromatic esters include aliphatic acetates such as ethyl acetate and isoamyl acetate; aromatic esters such as benzyl acetate and methyl salicylate.

  Examples of the essential oil include chamomile oil, basil oil, jasmine oil, anise oil, clove oil, nutmeg oil, fennel oil, and labdanum oil.

  In addition to the above fragrance ingredients, the fragrance composition contains, for example, the fragrance ingredients described in “Synthetic Fragrance Chemistry and Product Knowledge” (Motoichi Indo, Chemical Industry Daily) in a range that does not interfere with the effects of the present invention. You can also.

  Moreover, the fragrance | flavor composition can contain a solvent, if it is a range which does not prevent the effect of this invention. As the solvent, one or more of dipropylene glycol, ethyl diglycol, isopropyl myristate, benzyl benzoate, triethyl citrate and diethyl phthalate can be used.

  The usage-amount of a fragrance | flavor composition can be suitably selected according to the kind, the specific use of the heating tool 1, etc. Although it depends on the type of the fragrance composition, the general range is preferably 0.5 parts by mass or more, and 0.7 parts by mass or more with respect to 100 parts by mass of the oxidizable metal of the heat generating part 10. More preferably, it is preferably 6 parts by mass or less, and more preferably 4.5 parts by mass or less. Moreover, it is preferable that it is 0.5-6 mass parts, and it is more preferable that it is 0.7-4.5 mass parts.

  As a method for flavoring the heating tool 1, when the fragrance composition is liquid, there is a method in which the fragrance composition is directly added to the heating tool 1 by spraying or the like. In addition, there is a method in which a sheet material, a powder, a fat and oil carrier, and the like are perfumed to form a perfumed sheet, a powder perfume, or a paste-like perfume and added to the heating tool 1. When the fragrance composition is solid, there is a method in which the fragrance composition is appropriately added to the heating tool 1.

It is preferable that the fragrance composition is applied between the inside of the bag body 30 and the heat generating portion 10 in terms of product management and efficiently expressing the fragrance.
As a specific method for applying the fragrance composition between the heat generating portion 10 and the bag body 30, for example, the inner surface of the bag body 30 may be impregnated directly, or as shown in FIG. The perfume sheet 15 formed by perfume the sheet material with the perfume composition may be disposed between the powder perfume and paste-like perfume obtained by perfume the powder or oil carrier. A fragrance may be applied in the form of a sheet.
When using the perfume sheet | seat 15, specifically, you may give by arrange | positioning adjacent to the inner surface of the bag body 30, and the perfume sheet | seat 15 is attached to the inner surface of the bag body 30 with an adhesive agent. You may adhere and apply.

  In this specification, “adjacently arranged” means a state that is close but not necessarily in contact, that is, a state that may or may not be in contact.

The perfume sheet 15 preferably includes a sheet material containing a fiber material such as paper, non-woven fabric, or woven fabric, or a sheet material having moisture absorption and oil absorption properties such as a porous film.
The material of the sheet material can be, for example, natural fibers such as silk, cotton, wool, and cellulose, and synthetic fibers such as polyamide, polyolefin, and polyester.
Among these, paper containing cellulose, for example, water-absorbing paper, can maintain a good balance between aroma and heat generation characteristics when the heating tool 1 is used, and can reduce the weight of the heating tool 1. This is preferable.

  In the bag 30, the heat generating part 10 may be further accommodated in the container 20 to form the heat generator 14 as shown in FIG. 1. The container 20 is at least partially breathable. In the example shown in FIG. 1, specifically, the container 20 has a shape formed by joining the peripheral edges of the first container sheet 20 a and the second container sheet 20 b to each other. The container 20 is in a non-joined state at a portion inside the joined peripheral edge portion, thereby forming a single space for housing the heat generating part 10.

  In this invention, the air permeability of the 2nd container sheet | seat 20b can also be made larger than the air permeability of the 1st container sheet | seat 20a. Thereby, it becomes possible to further suppress the influence of the water absorbing agent in the heat generating part 10 on the fragrance composition. That is, the air permeability of the second container sheet 20b is preferably at least twice that of the first container sheet 20a, more preferably at least five times, and even more preferably at least ten times. .

  The 1st container sheet | seat 20a may have air permeability so that permeation | transmission of air and water vapor | steam is possible. On the other hand, the second container sheet 20b may be less breathable or non-breathable than the first container sheet 20a. When the second container sheet 20b is difficult to breathe, the air permeability of the second container sheet 20b is preferably 5,000 seconds / 100 ml or more, and preferably 10,000 seconds / 100 ml or more. More preferably, it is more preferably 20,000 seconds / 100 ml or more, and even more preferably 30,000 seconds / 100 ml or more. On the other hand, the air permeability of the first container sheet 20a is 1,000 seconds / 100 ml or more and 50,000 seconds / 100 ml regardless of whether the second container sheet 20b is non-breathable or non-breathable. The following is preferable.

  Specific materials for the first container sheet 20a and the second container sheet 20b include a melt-blown nonwoven fabric, a moisture-permeable film, and a breathable sheet in terms of controlling air permeability and preventing powder leakage. A breathable sheet is preferably used. As the moisture permeable film, for example, a fine porous material obtained by forming a melt-kneaded product of a thermoplastic resin and an organic or inorganic filler incompatible with the resin into a film shape and stretching it uniaxially or biaxially. What has a structure can be used.

As the breathable sheet, a resin porous sheet or a resin sheet having a vent hole can be used. For example, polyethylene, polypropylene, ethylene vinyl acetate copolymer, or the like can be used.
Specifically, the resin-made porous sheet is obtained by forming a melt-kneaded product of a thermoplastic resin and an organic or inorganic filler that is not compatible with the resin into a film shape and stretching it uniaxially or biaxially. The resin sheet having a fine porous structure, or a resin sheet having a vent hole provided with a fine hole with a needle or the like in a non-breathable sheet or a hardly breathable sheet, or the above-mentioned It is preferable that the air-permeable sheet is further provided with fine holes with a needle or the like.
The thickness of the breathable sheet is preferably 5 μm or more and 200 μm or less.

The non-breathable sheet may be any sheet that does not substantially transmit oxygen, and is selected from, for example, polyolefins such as polyethylene and polybutadiene, polyvinyl chloride, polyvinylidene chloride, polyester, polyether, polysulfone, and polyamide. 1 type (s) or 2 or more types can be used. The thickness of the breathable sheet is preferably 5 μm or more and 200 μm or less.
The 1st container sheet 20a and the 2nd container sheet 20b may be comprised from the sheet material of 1 sheet, and may be comprised from the laminated body of the some sheet material.

  As described above, the fragrance composition is preferably applied between the heat generating portion 10 and the inside of the bag body 30, but more preferably applied between the container 20 and the inside of the bag body 30. . Further, it is more preferable that the fragrance composition is applied to the outer surface of the container 20. When the second container sheet 20b is interposed between the fragrance composition and the heat generating portion 10, the distance between the fragrance composition and the heat generating portion 10 is increased. Can be suppressed.

  As a specific example of applying the fragrance composition to the outer surface of the container 20, the fragrance composition may be directly applied to a sheet on the outer surface of the container 20. In addition, the sheet | seat of the outer surface of the container 20 may be made equivalent to a fragrance | flavor sheet | seat, and a fragrance | flavor composition may be given to this sheet | seat. That is, a sheet equivalent to the scented sheet is laminated on the outer surface of the second container sheet 20b using a method such as an adhesive or heat fusion, and the sheet on the outer surface of the container 20 is equivalent to the scented sheet. It may be a thing. Thereby, since the distance of a fragrance | flavor composition and the heat_generation | fever part 10 becomes long, while not giving the temperature inhibition by a sheet | seat, while being able to provide sufficient thermal effect, perfume is easy and the fragrance of a fragrance | flavor composition is It becomes extremely high, and it becomes possible to suppress the change of fragrance more effectively. When using the perfume sheet | seat 15, it is preferable to arrange | position adjacent to the container 20 so that it may illustrate.

  When the first container sheet 20a is positioned on the side close to the application site such as the skin and the second container sheet 20b is positioned on the side far from the application site, the perfume sheet 15 is on the side far from the application site. It is arranged on the outer surface on the second container sheet 20b side that is positioned on the outer surface, or the fragrance composition is applied to the outer surface, thereby improving the lightness during use and imparting a sufficient thermal effect to the application site, It is possible to achieve a good scent.

  It is preferable that the heating tool 1 is hermetically sealed with a packaging material (not shown) having oxygen barrier properties before use.

Next, the effect by the heating tool 1 is demonstrated.
The heating tool 1 includes a heat generating unit 10 including an oxidizable metal, a water absorbing agent, and water, and a bag body 30 having at least a part of air permeability and accommodating the heat generating unit 10. One or more selected from terpene hydrocarbons and derivatives thereof, and a compound having no bicyclo [7.2.0] undecane skeleton, and (B) a terpene skeleton having 10 to 12 carbon atoms It is perfumed with the fragrance | flavor composition containing the oxygen-containing compound which is. In the heating device 1, the content of the component (A) is 0.1 parts by mass or more and 0.8 parts by mass or less with respect to 100 parts by mass of the oxidizable metal, and the component (A) with respect to the component (B). The mass ratio ((A) / (B)) is 0.1 or more and 4 or less.
Here, the component (A) is mainly known as an aroma component capable of expressing a forest-like fragrance, but the present inventors have a fragrance that affects the temperature increase immediately after the start of use of the heating tool 1. It was found as a group. That is, when only the component (A) is added to the conventional heating tool by the present inventors, it is the first time that the heating characteristics of the heating tool are reduced after the heating tool 1 is manufactured until it is used. It was found.
On the other hand, the heating tool 1 combines a component (B) with a component (A). That is, the component (B) is specified as a group of scents that can suppress the influence of the component (A) on the temperature increase immediately after the start of use of the heating tool 1 without greatly changing the quality of the scent, and the component (A) Good heat generation characteristics are obtained by the combination of the component (B).
And by controlling these content appropriately, the fall of the exothermic characteristic of the heating tool 1 can be suppressed, and while using the heating tool 1, a favorable fragrance is obtained and a favorable exothermic characteristic is stable. Will be held in. Although details of such a mechanism are not clear, it is speculated that the component (A) interacts with the heat generating part 10 after the heating tool 1 is manufactured and used, so that the heat generation characteristics deteriorate. By adding the component (B), a balance between the component (A), the component (B) and the heat generating part 10 can be obtained, and good heat generation characteristics can be obtained without greatly affecting the quality of the scent. Is guessed. In addition, the present inventors have found that the compound having a bicyclo [7.2.0] undecane skeleton has little interaction with the heat generating part 10 after the heating tool 1 is manufactured and before it is used. I have confirmed.
Here, the good heat generation characteristic of the heating tool 1 means that when the heating tool 1 is used, heat generation due to the oxidation reaction by oxygen in the air of the heating unit 10 is satisfactorily exhibited, and the temperature rise immediately after the start of use is sufficient. It means that the decrease in the maximum surface temperature of the heat generating part 10 is suppressed.

Moreover, in order to suppress the influence on the temperature rise immediately after the use start of the heating tool 1 by a component (A) as mentioned above without having a big influence on the quality of fragrance, in the heating tool 1, a component (A) And the following conditions may be satisfied, containing a component (B).
Conditions: Heating tool 1 is placed in an oxygen-blocking bag, treated in a degassed state at 50 ° C. for 30 days, and then heated to 1 hour at room temperature of 20 ° C. and a humidity of 60% under atmospheric pressure. When this is done, the highest surface temperature of the heat generating part 10 is 54 ° C to 72 ° C.

Even if the heating tool 1 satisfies the above-described conditions, it is possible to suppress a decrease in heat generation characteristics between the manufacturing of the heating tool 1 and the use of the heating tool 1. Can be obtained, and a specific holding action that can be obtained with a good balance of aroma and exothermic properties such that sufficient heat can be imparted to the skin can be obtained.
Although details of such a reason are not clear, the present inventors have been researching, and in the case where the heating tool 1 has the component (A) and the component (B), after the treatment for 30 days at 50 ° C. It has been found that when the maximum surface temperature of the heat generating part 10 is within an appropriate range, the heat generation characteristic of the heating tool 1 is not greatly affected and a desired aroma can be obtained from the heating tool 1. Therefore, as a result of further investigation, after the heating tool 1 was treated at 50 ° C. for 30 days, the heating tool 1 was heated in the air at room temperature of 20 ° C. and a humidity of 60% under atmospheric pressure. In the case where the condition that the maximum surface temperature of the part 10 is 54 ° C. to 72 ° C. is satisfied, it was found that the above-mentioned specific holding action can be obtained, and the above condition was used as an index representing the specific holding action.
In order to satisfy the above conditions, it is important to devise a method for manufacturing the heating tool 1. In addition to having component (A) and component (B), the amount of perfume, average particle size of oxidizable metal and water-absorbing agent, content of oxidizable metal, water-absorbing agent and water, etc. , And a method of manufacturing the heat generating part 10 are adjusted and appropriately combined.

  In the above conditions, the deaeration is performed by placing the heating tool 1 inside the oxygen-blocking bag, crushing the bag from the outside, and removing the air inside the bag, and then the air enters. Sealed so that there is no. In addition, the heating tool 1 may be accommodated in the exterior bag at this time, and when accommodated, it is put in the said oxygen-blocking bag with the exterior bag. The treatment is carried out at a constant temperature of 50 ° C. for 30 days. Then, acclimatize for 3 days in an environment of temperature 20 ° C. and humidity 60%, take out the heating tool 1 from the bag, and open the heating tool 1 in the air at atmospheric pressure of room temperature 20 ° C. and humidity 60%, thereby generating a heating part. 10 is reacted with oxygen in the air, and the heat generating part 10 is heated by utilizing heat generated by the oxidation reaction. The maximum surface temperature is a temperature due to a temperature increase due to the oxidation reaction, and is a temperature measured while the heat generating part 10 is generating heat.

  Moreover, the heating tool 1 can give a more effective heating effect to a user as the highest ultimate temperature of the outer surface of the 2nd bag body sheet 30b is 54 degreeC or more.

  As mentioned above, although the heating tool 1 was described with reference to FIGS. 1-3, this is an illustration of this invention and various structures other than the heating tool 1 can also be employ | adopted.

[Steam Heater 100]
Next, the steam heating tool 100 will be described below as a more specific example of the heating tool 1.
FIG. 4 shows a plan view of the steam heating device 100. The steam heating device 100 is of a so-called eye mask type, and the eye and its water vapor (hereinafter, also referred to as “steam heat”) heated to a predetermined temperature in contact with the human eye and its surroundings. It is used to add to the surroundings. This steam heating tool 100 is fragranced with a fragrance composition containing the aforementioned component (A) and component (B) in a predetermined amount.

  The steam heating device 100 includes a main body 101 and an ear hook 105 having a hole 104 into which an ear is inserted. The main body 101 has a horizontally long shape having a longitudinal direction X and a width direction Y orthogonal thereto. The main body 101 has a substantially oval shape. The ear hooks 105 are used as a pair, and each ear hook 105 is attached to each end of the main body 101 in the longitudinal direction (X direction). The steam heating device 100 is mounted so that each ear hook 105 is put on the wearer's ear and the main body 101 is covered with both eyes of the wearer. Under this wearing condition, the steam temperature generated from the steam heating tool 100 is applied to the wearer's eyes, and the aroma component is volatilized, so that a good fragrance such as a forest tone can be suitably felt.

  FIG. 5 shows an exploded perspective view of the steam heating device 100. FIG. 6 is a cross-sectional view of the steam heating device 100 along the X direction. The main body 101 of the steam heating device 100 includes a heat generating part 121 and a bag body 110 that houses the heat generating part 121. The heat generating portion 121 is housed in a housing 122 having at least a part of air permeability and constitutes a heat generating body 120. The heating part 121 corresponds to the heating part 10 in FIG. 1, the heating element 120 corresponds to the heating element 14 in FIG. 1, the bag 110 corresponds to the bag 30 in FIG. 1, and the container 122 in FIG. Corresponds to the container 20.

  The heat generating part 121 is in the same mode as the heat generating part 10. That is, the heat generating part 121 includes at least an oxidizable metal, an absorbent, and water, but preferably further includes a reaction accelerator. The heat generating portion 121 may be a single layer or a laminated structure, or may have a two-layer structure as shown in FIG.

  The fragrance composition used for the flavoring of the steam heating device 100 is the same as the fragrance composition that can be used in the heating device 1 of FIG. Thereby, it can be set as the steam heating tool 100 which can generate | occur | produce steam warm heat appropriately at the time of use, and can express favorable fragrances, such as a forest tone, with sufficient balance.

  In the steam heating device 100, the bag body 110 has a first bag sheet 110a located on the side close to the wearer's skin and a second bag sheet 110b located on the side far from the wearer's skin. Yes. The first bag sheet 110a corresponds to 30a in FIG. 1, and the second bag sheet 110b corresponds to 30b in FIG.

  From the viewpoint of enhancing the feeling of warmth during use and the feeling of use, the basis weight should be the same as or smaller than the first bag sheet 110a on the side farther to the skin than the first bag sheet 110a on the side closer to the skin. preferable. What is necessary is just to select suitably the thickness of the 1st bag body sheet | seat 110a and the 2nd bag body sheet | seat 110b, and the thickness of a constituent fiber.

  The first bag body sheet 110a and the second bag body sheet 110b have the same shape and are substantially oval. The outer shape of the first bag sheet 110 a and the second bag sheet 110 b is the outer shape of the main body 101. The first bag sheet 110a and the second bag sheet 110b are overlapped, joined at their peripheral edges, and joined at the center in the X direction along the Y direction (dashed line portion in FIG. 4). A bag body 110 having two spaces inside is formed. In order to join the first bag sheet 110a and the second bag sheet 110b, for example, a hot melt adhesive can be used.

  The bag body 110 has substantially V-shaped notches 113a and 113b cut inwardly along the Y direction from the long side at the position of the center of the two long sides extending in the X direction. . The notch portion 113a is located between or near the wearer's eyebrows when the steam heating device 100 is attached. The notch 113b is located on the wearer's nose bridge when the steam heating device 100 is worn. Therefore, the notch portion 113b is more severed than the notch portion 113a. Note that at least one of the notch portions 113a and 113b shown in FIG. 5 may be a slit.

  In FIG. 6, an example of the steam heating device 100 in which the heat generating part 121 is housed in a housing 122 having at least a part of air permeability to constitute the heat generating body 120 is further accommodated in the bag body 110. Illustrated. In this example, specifically, the container 122 has a shape formed by joining the peripheral portions of the first container sheet 122a and the second container sheet 122b to each other. The accommodating body 122 is in a non-joined state at a portion inside the joined peripheral edge portion, whereby a single space for accommodating the heat generating portion 121 is formed. The container 122 corresponds to the container 20 of FIG. 1, specifically, the first container sheet 122a corresponds to the first container sheet 20a of FIG. 1, and the second container sheet 122b is the second container. This corresponds to the sheet 20b.

  The fragrance composition is preferably applied between the inner side of the bag body 110 and the heat generating part 121, more preferably applied between the inner side of the bag body 110 and the container body 122. More preferably, it is applied to the outer surface, and more preferably, it is applied to the outer surface of the second container sheet 122b. When the second container sheet 122b is interposed between the fragrance composition and the heat generating portion 121, the distance between the fragrance composition and the heat generating portion 121 is increased. Can be suppressed.

  Other specific examples of applying the fragrance composition between the inside of the bag body 110 and the heating element 120 include, for example, powder fragrances and paste-like fragrances obtained by fragranceing powder or oil and fat carriers. It may be applied in the form of a sheet, or as shown in FIG. 6, a perfume sheet 150 formed by perfume the sheet material with a perfume composition may be disposed between the bag body 110. You may apply | coat a fragrance | flavor composition directly to the inner surface of this.

  As a specific example of applying the fragrance composition to the outer surface of the container 122, the fragrance composition may be directly applied to a sheet on the outer surface of the container 122. In addition, the sheet | seat of the outer surface of the container 122 may be equivalent to a perfume sheet | seat, and a fragrance | flavor composition may be given to this sheet | seat. That is, a sheet equivalent to the perfume sheet is laminated on the outer surface of the second container sheet 122b using a method such as an adhesive or heat fusion, and the sheet on the outer surface of the container 122 is equivalent to the perfume sheet. It may be a thing. As a result, a sufficient thermal effect can be imparted without causing temperature inhibition by the sheet, and it is easy to perfume, the fragrance composition becomes extremely fragrant, and a good fragrance such as forest tone is more effective. Expression can be achieved. The perfume sheet 150 is the same mode as the perfume sheet 15. When the perfume sheet 150 is used, specifically, the perfume sheet 150 may be disposed adjacent to the inner side surface of the bag body 110, or the perfume sheet 150 may be applied to the inner side surface of the bag body 110 with an adhesive. You may adhere and apply.

  When the first container sheet 122a is located on the side close to the wearer's skin and the second container sheet 122b is located on the side far from the wearer's skin, the perfume sheet 150 is placed on the wearer's skin. It is arranged on the outer surface on the side of the second container sheet 122b located on the side farther from the surface, or the fragrance composition is applied to the outer surface, thereby improving the lightness during use and providing a sufficient thermal effect to the wearer's skin. It is possible to achieve good scenting as well.

  As specific materials of the first container sheet 122a and the second container sheet 122b, the same materials as the first container sheet 20a and the second container sheet 20b can be selected. Further, the air permeability of the first container sheet 122a and the second container sheet 122b can be set similarly to the first container sheet 20a and the second container sheet 20b.

  FIG. 6 shows a fixed state of the bag body 110 and the heating element 120. The heating element 120 is fixed inside the bag 110 by connecting the inner surface of the second bag sheet 110b and the outer surface of the second container sheet 122b by the fixing portions 103a and 103b. Is done. The fixing portions 103a and 103b can be, for example, an adhesive or a heat seal.

  As shown in FIGS. 5 and 6, the ear hook 105 in the steam heating device 100 is disposed on the first bag sheet 110 a in the main body 101 in a state before use. When using the steam heating device 100, as shown in FIG. 4, the ear hooking portion 105 is reversed outward in the X direction to be in an open state. In a state before use, that is, in a state where the left and right ear hooks 105 are positioned on the main body 101, the contour formed by the left and right ear hooks 105 is substantially the same as the contour of the main body 101. Yes.

The steam heating device 100 of the present embodiment is entirely packaged by a packaging material (not shown) having an oxygen barrier property before use, so that the heat generating part 121 does not come into contact with oxygen in the air. Yes. The film constituting the packaging material is not particularly limited, but specifically, a metal film such as aluminum, polyolefin such as polypropylene, polyethylene terephthalate (PET), ethylene vinyl alcohol copolymer, ethylene vinyl acetate copolymer, poly Examples thereof include synthetic resin films such as acrylonitrile, and films obtained by vapor-depositing ceramic or aluminum on these synthetic resin films. The packaging material has an oxygen permeability coefficient (ASTM D3985) of preferably 10 cm ³ · mm / (m ² · day · MPa) or less, more preferably 2 cm ³ · mm / (m ² · day · MPa). The following can be used.

  FIG. 7 shows a steam heating tool 200 as another example of the steam heating tool 100. In the steam heating device 100, an example in which the perfume sheet 150 is arranged on the outer surface of the container 122 between the inside of the bag body and the heat generating portion has been described, but in the steam heating device 200, from the inside of the bag body 110. An example in which the fragrance composition is applied to the sheet material separately arranged outside the container between the heat generating element 220 and the heating element 220 will be described. Specifically, in the steam heating device 200 shown in FIG. 7, a perfume sheet 230 is disposed between the inside of the bag body 110 and the heating element 220. In particular, it is preferable that the perfume sheet 230 is disposed adjacent to the second bag sheet 110 b in the bag body 110 and the heating element 220. The perfume sheet 230 is provided with a perfume composition containing the aforementioned component (A) and component (B) in a predetermined amount.

  The perfume sheet 230 is in a non-adhered state with the second bag sheet 110b and the housing 222 of the heating element 220, and is in a state of being adjacently disposed. Alternatively, it is slightly adhered to the second bag sheet 110b to such an extent that positional displacement does not occur. The sheet material constituting the perfume sheet 230 may be the same shape as the container 222 or may be smaller than the container 222. Especially, when the shape is the same as that of the heat generating part 221, it is preferable that the scent is removed by heat generation.

  The heat generating part 221 has the same mode as the heat generating part 10. The heat generating portion 221 may have a single layer or a laminated structure, or may have a two-layer structure as shown in FIG.

  The heating element 220 is fixed to the bag body 110 by a fixing portion 203. Except as described above, the steam heating tool 200 is the same as the steam heating tool 100, and the same effect as the steam heating tool 100 can be obtained. For example, the first container sheet 222a corresponds to the first container sheet 122a, and the second container sheet 222b corresponds to the second container sheet 122b.

  Note that the steam heating tool 100 and the steam heating tool 200 have been described by taking the eye mask used in contact with both eyes of the wearer as an example, but instead of this, the wearer's body, for example, the shoulder, It may be used in contact with the waist, elbow, knee or the like. Or you may affix and use on clothing. When the steam heating tool 100 is brought into contact with the wearer's body, a fixing means such as an adhesive may be provided in place of the ear hook 105. That is, when using it by making it contact | abut to a wearer's body, the fixing means, such as an adhesive, should just be provided in the surface of the 1st bag body 110a in the bag body 110, and it affixes on a wearer's clothing. When used, a fixing means such as an adhesive may be provided on the surface of the second bag sheet 110b in the bag body 110.

  According to the steam heating devices 100 and 200, since the fragrance composition containing the component (A) and the component (B) described above in a predetermined amount is used, good heat generation characteristics can be obtained during use. It becomes a heating device that can express a forest-like fragrance. Moreover, the steam heating tools 100 and 200 are excellent from the viewpoint of heat generation characteristics.

  As mentioned above, although embodiment of this invention was described with reference to drawings, these are the illustrations of this invention, Various structures other than the above are also employable.

  In relation to the above-described embodiment, the present invention further discloses the following composition, production method, or application.

<1>
A heat generating part comprising an oxidizable metal, a water absorbing agent and water;
A bag body having air permeability at least in part and accommodating the heat generating portion;
A heating device having
The heating tool is
(A) one or more selected from sesquiterpene hydrocarbons and derivatives thereof, a compound having no bicyclo [7.2.0] undecane skeleton (B) having a terpene skeleton and having 10 carbon atoms It is perfumed with a fragrance composition containing an oxygen-containing compound that is ~ 12,
The content of the component (A) with respect to 100 parts by mass of the oxidizable metal is 0.1 parts by mass or more and 0.8 parts by mass or less.
The heating tool whose mass ratio ((A) / (B)) of the component (A) with respect to a component (B) is 0.1-4.
<2>
Preferably, the water absorbing agent includes a carbon component. The heating device <3> according to <1>.
The heating component <4> according to <2>, wherein the carbon component in the water absorbing agent is preferably 95% to 100%.
The heating tool according to any one of <1> to <3>, wherein the content of the component (A) with respect to 100 parts by mass of the carbon component is preferably 1.2 parts by mass or more and 10 parts by mass or less.
<5>
The heating tool according to any one of <1> to <3>, wherein the content of the component (A) with respect to 100 parts by mass of the carbon component is preferably 3.3 parts by mass or more and 6.5 parts by mass or less.
<6>
The total mass part of the content of the component (A) and the component (B) with respect to 100 parts by mass of the oxidizable metal is preferably 0.70 parts by mass or more and 1.7 parts by mass or less, more preferably 0. The heating tool according to <1> to <5>, which is 80 parts by mass or more and 1.5 parts by mass or less.
<7>
The total mass part of the content of the component (A) and the component (B) with respect to 100 parts by mass of the carbon component is preferably 8.0 parts by mass or more and 20 parts by mass or less, and more preferably 10 parts by mass or more and 18 parts by mass. The heating tool according to any one of <1> to <6>, which is equal to or less than part by mass.
<8>
The heat according to any one of <1> to <7>, wherein the content of the component (A) with respect to 100 parts by mass of the oxidizable metal is preferably 0.20 parts by mass or more and 0.65 parts by mass or less. Ingredients.
<9>
The heat according to any one of <1> to <7>, wherein the content of the component (A) with respect to 100 parts by mass of the oxidizable metal is preferably 0.28 parts by mass or more and 0.50 parts by mass or less. Ingredients.
<10>
The heating device according to any one of <1> to <9>, wherein the mass ratio ((A) / (B)) is preferably 0.25 or more and 1.5 or less.
<11>
The heating tool according to any one of <1> to <10>, wherein the content of the oxidizable metal is expressed in basis weight, and is preferably 100 to 3000 g / m ² .
<12>
Component (A) is preferably at least one or more selected from sesquiterpene hydrocarbons, sesquiterpene alcohols, sesquiterpene ethers, sesquiterpene esters, and sesquiterpene methyl ketones, <1> to <11> The heating tool according to any one of the above.
<13>
The heating tool according to any one of <1> to <11>, wherein component (A) is preferably at least one or more selected from acetyl cedrene, isolongifolene, and farnesene.
<14>
Component (B) is preferably at least one or more selected from monoterpene alcohols, monoterpene aldehydes, terpene alcohol acetates, monoterpene ketones, and monoterpene ethers, <1 The heating tool according to any one of> to <13>.
<15>
The heating tool according to any one of <1> to <13>, wherein component (B) is preferably at least one or more selected from linalool, ethyl linalool, and citronellol.
<16>
The heating tool according to any one of <1> to <15>, wherein the fragrance composition is preferably applied between the inside of the bag and the heat generating portion.
<17>
The heating tool preferably further has a container,
The container constitutes a heat generating body by accommodating the heat generating portion therein,
The heating tool according to any one of <1> to <16>, wherein the fragrance composition is applied between the inside of the bag and the heating element.
<18>
The heating tool according to <17>, wherein the fragrance composition is preferably applied to an outer surface of the container.
<19>
The heating tool according to any one of <1> to <18>, wherein the heating tool preferably further includes a flavoring sheet, and the flavor composition is applied to the flavoring sheet.
<20>
The heating tool according to <19>, wherein the perfume sheet is preferably disposed adjacent to the inner side surface of the bag.
<21>
Preferably, the perfumed sheet is a heating tool according to <19> or <20>, which is obtained by applying the perfume composition to a sheet material.
<22>
The heating material according to <21>, wherein the sheet material preferably contains cellulose, more preferably water absorbent paper.
<23>
The bag body is composed of a first bag body sheet and a second bag body sheet. Preferably, the second bag body sheet on the side far from the skin is the same as the first bag body sheet on the side close to the skin. The heating tool according to any one of <1> to <22>, which is lower than or lower than that.
<24>
The heating device according to <23>, wherein the first container sheet is preferably 1,000 seconds / 100 ml or more and 50,000 seconds / 100 ml or less.
<25>
The second container sheet is preferably 5,000 seconds / 100 ml or more, more preferably 10,000 seconds / 100 ml or more, and further preferably 20,000 seconds / 100 ml or more. More preferably, the heating tool according to <23> or <24>, which is 30,000 seconds / 100 ml or more.
<26>
<1> thru / or <25> heating tool which satisfy | fills the following conditions.
Condition: The heating tool is put in an oxygen-blocking bag, treated in a degassed state at 50 ° C. for 30 days, and then the heating tool is opened in the air at atmospheric pressure of room temperature 20 ° C. and humidity 60%. The maximum surface temperature of the heat generating part is 54 ° C to 72 ° C.
<27>
A heat generating part comprising an oxidizable metal, a water absorbing agent and water;
A bag body having air permeability at least in part and accommodating the heat generating portion;
A heating device having
The heating tool is
(A) one or more selected from sesquiterpene hydrocarbons and derivatives thereof, a compound having no bicyclo [7.2.0] undecane skeleton (B) having a terpene skeleton and having 10 carbon atoms Containing an oxygen-containing compound of ~ 12,
Heating equipment that satisfies the following conditions.
Condition: The heating tool is put in an oxygen-blocking bag, treated in a degassed state at 50 ° C. for 30 days, and then the heating tool is opened in the air at atmospheric pressure of room temperature 20 ° C. and humidity 60%. The maximum surface temperature of the heat generating part is 54 ° C to 72 ° C.
<28>
The heating device according to <27>, wherein the mass ratio of component (A) to component (B) ((A) / (B)) is preferably 0.25 or more and 1.5 or less.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to such examples. Unless otherwise specified, “%” and “part” mean “% by mass” and “part by mass”, respectively.

A steam heater having the structure shown in FIGS. 4 to 6 was produced as follows.
[Preparation of exothermic powder water dispersion]
Materials were prepared at the composition ratio shown in Table 1, and prepared by the following procedure. Xanthan gum was dissolved in water, and then tripotassium phosphate and potassium hydroxide were dissolved to prepare an aqueous solution. On the other hand, a powder in which iron powder and activated carbon are premixed is prepared, and the premixed powder is put into the above aqueous solution, and stirred at 150 rpm for 10 minutes with a disk turbine type stirring blade to produce a slurry-like exothermic powder water dispersion Got.

(Production of heat generating part)
As the water-absorbing layer, wood pulp paper (basis weight 20 g / m ² , Ino Paper Co., Ltd.) and water-absorbing polymer (spherical, average particle diameter 300 μm, Aquaric CA, Nippon Shokubai Co., Ltd., basis weight 30 g / m) ² ) and a polymer sheet obtained by laminating and integrating wood pulp paper (basis weight 30 g / m ² , manufactured by Ino Paper Co., Ltd.) (ventilation in a state where 10 to 45 mass% of the maximum water absorption amount is absorbed) 2 seconds / 100 ml), and a polyethylene laminated paper (manufactured by Knit Co., Ltd.) was used as the base material layer.
A polyethylene laminated paper to be used as a base material layer was prepared, and the exothermic powder aqueous dispersion prepared as described above was approximately 3 mm thick (1.7 g coating amount) on the surface of a 25 cm ² (5 cm × 5 cm) polyethylene laminated paper. The coating surface is sprayed with 0.089 g of sodium chloride (Japanese Pharmacopoeia sodium chloride: manufactured by Tomita Pharmaceutical Co., Ltd.), and the coated surface is coated with a polymer sheet 25 cm ² (5 cm × 5 cm), thereby generating heat. Part was produced.

[Production of heating element]
The 1st container sheet | seat in a container was comprised from the porous stretched polyethylene moisture-permeable film (Air permeability 3,500 second by JISP8117) containing a calcium carbonate. The 2nd container sheet | seat was comprised from the non-breathable film made from polyethylene. Water absorbent paper (basis weight 35 g / m ² ) is laminated on one surface of the second container sheet, and the first container sheet and the second container sheet Were stacked so that the water-absorbing paper faced outward, and the sheets were joined at the peripheral edge to obtain a rectangular heating element. And the water absorbing paper was impregnated with the fragrance composition having the composition (parts by mass) shown in Table 2 below. The impregnation amount of the fragrance composition was 12.6 to 23.0 mg with respect to the solid content of 1.18 g of the heat generating part.

[Production of steam heater]
The first bag sheet uses a needle punched nonwoven fabric (skin side, basis weight 80 g / m ² ), and the second bag sheet uses an air-through nonwoven fabric (opposite side to skin, basis weight 30 g / m ² ), and is shown in FIG. Thus, between the two bag sheets, two heating elements obtained above were sandwiched, and the first bag sheet and the second bag sheet were joined in the vicinity of the peripheral edge and the longitudinal center line. Furthermore, as shown in FIG. 4, a non-woven ear hook part was attached to the outer surface of the first bag sheet to obtain a target steam heating tool. Each of the above operations was performed in an atmosphere without oxygen.

  The following evaluation was performed using the obtained steam heating tool. The results are shown in Table 2. The “holding action” was evaluated based on the following exothermic characteristics and fragrance evaluation results.

・ Condition Put a steam heater in an oxygen-blocking bag, crush it from the outside of the bag, vent the air inside the bag, seal it, and treat it at 50 ° C for 30 days, then at 20 ° C in a 60% environment. The maximum surface temperature of the heat generating part when it was acclimatized for a day and opened in air at 60 ° C. and 60% atmospheric pressure was evaluated according to the following criteria. Note that the measurement of the maximum surface temperature was performed in the same procedure as described below for “heat generation characteristics”.
1: The maximum surface temperature is 54 ° C. or lower.
2: The maximum surface temperature is not less than 54 ° C and not more than 62 ° C.
3: The maximum surface temperature is 62 ° C. or higher and 72 ° C. or lower.
4: Maximum surface temperature reached 72 ° C. or higher.

・ Heat generation characteristics The maximum surface temperature (° C) of the heat generating part is measured by applying a measuring surface to the area where the heat generating part is located on the outer surface of the second bag sheet of the steam heating tool using a measuring machine compliant with JIS S4100. In addition, the measurement was performed by starting the exothermic part in the presence of oxygen.
The exothermic characteristic is the difference between the maximum surface temperature (° C) immediately after production of the steam heater and the maximum surface temperature (° C) after the steam heater is stored at 50 ° C for 2 weeks (maximum temperature drop) Value). The lower the maximum temperature drop value, the better the heat generation characteristics.

-Fragrance evaluation A steam heating tool was sealed in a bag and stored at 50 ° C for 2 weeks. After that, open the bag, attach a steam heating device, start the generation of heat and water vapor, and evaluate the scent 5 minutes after opening by a plurality of scent specialist panels according to the following criteria, and calculate the average value The result was calculated and rounded off to the first decimal place.

<Scent>
1: The balance of forest-like aroma is very good 2: The balance of forest-like aroma is good 3: The balance of forest-like aroma is not enough 4: The balance of forest-like aroma is extremely insufficient

DESCRIPTION OF SYMBOLS 1 Heating tool 10 Heat generating part 11 Heat generating layer 12 Water retaining layer 13 Base material layer 14 Heating element 15 Scented sheet 20 Container 20a Container sheet 20b Container sheet 21 Oxidizable metal 22 Water absorbent 30 Bag body 30a Bag body sheet 30b Bag body sheet 100 Steam heating device 101 Main body part 102 Water absorbing sheet 103a Fixing part 103b Fixing part 104 Hole 105 Ear hooking part 110 Bag body 110a Bag body sheet 110b Bag body sheet 113a Notch part 113b Notch part 120 Heating element 121 Heating part 122 Body 122a Container sheet 122b Container sheet 130 Base sheet 150 Flavor sheet 200 Steam heating device 203 Fixing part 220 Heating element 221 Heating part 222 Container 222a Container sheet 222b Container sheet 230 Fragrance sheet 301 Coating tank 302 Exothermic powder water dispersion 303 Stirrer 304 Pump 305 Die head L Center line X Longitudinal direction Y Width direction

Claims (14)

A heat generating part comprising an oxidizable metal, a water absorbing agent and water;
A bag body having air permeability at least in part and accommodating the heat generating portion;
A heating device having
The heating tool is
(A) one or more selected from sesquiterpene hydrocarbons and derivatives thereof, a compound having no bicyclo [7.2.0] undecane skeleton (B) having a terpene skeleton and having 10 carbon atoms It is perfumed with a fragrance composition containing an oxygen-containing compound that is ~ 12,
The content of the component (A) with respect to 100 parts by mass of the oxidizable metal is 0.1 parts by mass or more and 0.8 parts by mass or less.
The heating tool whose mass ratio ((A) / (B)) of the component (A) with respect to a component (B) is 0.1-4.   The heating tool according to claim 1, wherein the water-absorbing agent contains a carbon component.   The heating tool according to claim 1 or 2, wherein the content of the component (A) with respect to 100 parts by mass of the carbon component is 1.2 parts by mass or more and 10 parts by mass or less.   The total mass part of content of the component (A) and the component (B) with respect to 100 parts by mass of the oxidizable metal is 0.70 parts by mass or more and 1.7 parts by mass or less. The heating tool described in the item.   The total mass part of content of a component (A) and a component (B) with respect to 100 mass parts of said carbon components is 8.0 mass parts or more and 20 mass parts or less as described in any one of Claim 1 thru | or 4. Heating tool.   6. The component (A) is one or more selected from sesquiterpene hydrocarbons, sesquiterpene alcohols, sesquiterpene ethers, sesquiterpene esters, and sesquiterpene methyl ketones. Heating tool as described in.   The heating tool according to any one of claims 1 to 6, wherein the component (A) is at least one or more selected from acetyl cedrene, isolongifolene, and farnesene.   The heating tool according to any one of claims 1 to 7, wherein the fragrance composition is applied between the inside of the bag and the heat generating portion. The heating tool further includes a container,
The container constitutes a heat generating body by accommodating the heat generating portion therein,
The heating tool according to any one of claims 1 to 8, wherein the fragrance composition is applied between the inside of the bag and the heating element.   The heating tool according to claim 9, wherein the fragrance composition is applied to an outer surface of the container.   The heating tool according to any one of claims 1 to 10, wherein the heating tool further includes a flavoring sheet, and the flavor composition is applied to the flavoring sheet.   The said perfume sheet | seat is a heating tool of Claim 11 which gives the said fragrance | flavor composition to the sheet material.   The heating tool according to claim 12, wherein the sheet material contains cellulose. A heat generating part comprising an oxidizable metal, a water absorbing agent and water;
A bag body having air permeability at least in part and accommodating the heat generating portion;
A heating device having
The heating tool is
(A) one or more selected from sesquiterpene hydrocarbons and derivatives thereof, a compound having no bicyclo [7.2.0] undecane skeleton (B) having a terpene skeleton and having 10 carbon atoms The heating tool which contains the oxygen-containing compound which is -12, and satisfy | fills the following conditions.
Condition: The heating tool is put in an oxygen-blocking bag, treated in a degassed state at 50 ° C. for 30 days, and then the heating tool is opened in the air at atmospheric pressure of room temperature 20 ° C. and humidity 60%. The maximum surface temperature of the heat generating part is 54 ° C to 72 ° C.

Images