JP3957026B2 - Heating equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a heating device that makes it difficult for a user to feel uncomfortable high temperature even when applied for a long time, and can effectively heat the abdomen, waist, and the like.
[0002]
[Prior art and problems to be solved by the invention]
Various warming devices that are fixed to clothing or skin and used for warming the abdomen, waist, and the like have been proposed.
However, the conventional warming device is heated in the same way as the part where the warming device is in contact, so it is difficult for the user to continue using it because it feels too hot when applied for a long time. Or have problems such as discomfort.
For this reason, it is conceivable to lower the temperature of the heating device as a whole, but it is not possible to expect the effect of thermal stimulation, such as the relief of menstrual pain.
[0003]
Therefore, the object of the present invention is to make it difficult to make the user feel uncomfortable due to the high temperature, despite the fact that an excellent warming effect (pain relief effect by thermal stimulation, etc.) can be obtained. An object of the present invention is to provide a warming device that can warm time comfortably.
[0004]
[Means for Solving the Problems]
The present invention relates to a low temperature heating part having a heating element that contains iron powder and generates heat in contact with air, and a high temperature heating part that has the heating element and emits a maximum temperature higher than the highest temperature that the low temperature heating part emits. And a heating tool having a flat area of the high-temperature heating part larger than a flat area of the low- temperature heating part, and having the high-temperature heating part at the center of the heating tool . Thus, the above object has been achieved (hereinafter referred to as the first invention refers to this invention).
The present invention also includes a low temperature heating part having a heating element that contains iron powder and generates heat upon contact with air, and a high temperature that has the heating element and emits a maximum temperature that is higher than the highest temperature generated by the low temperature heating part. A heating device, wherein the air flow rate of the breathable sheet covering the heating element in the high temperature heating unit is larger than the air flow rate of the breathable sheet covering the heating element in the low temperature heating unit , The above object is achieved by providing a heating tool having the high-temperature heating part at the center of the heating tool . (Hereinafter, the second invention refers to this invention.)
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the heating device of the present invention will be described with reference to the drawings.
The heating device 1 of the present embodiment shown in FIGS. 1 and 2 has a flat sheet-like form, and includes four low-temperature heat generating units 2, 2. And a high temperature heat generating portion 3 that emits a maximum temperature higher than the maximum temperature generated by the low temperature heat generating portions 2, 2.
[0006]
Here, the "highest temperature", JIS S4100 use of stearyl circuit ^{tests -1996} as defined in (measurement) according to the method, a value obtained by measuring under the conditions of heat portion surface 30 ° C., The level of the maximum temperature generated by the low temperature heating part and the maximum temperature generated by the high temperature heating part can be determined by comparing the maximum temperature measured by separating the low temperature heating part and the high temperature heating part by an appropriate means. In the present specification, the maximum temperature in the case where a preferable range relating to the maximum temperature is shown is the maximum temperature measured by this JIS method.
[0007]
As a method for making the maximum temperature generated by the high-temperature heating part of the heating tool higher than the maximum temperature generated by the low-temperature heating part, (1) a method in which the flat area is different between the high-temperature heating part and the low-temperature heating part, (2) There are a method of varying the air flow rate of the breathable sheet covering the heating element, and (3) a method of varying the type or composition of the heating element, but the first invention uses the method (1) above. The second invention uses the method (2). In the first invention and the second invention, other methods may be appropriately combined with the method (1) or (2) .
[0008]
The method (1) utilizes the fact that the maximum temperature increases as the plane area increases, and the maximum temperature of both can be made different without changing the basis weight of the heating element. There is.
[0009]
In the heating device 1 of the present embodiment, the maximum temperature is varied by the method (1) . Specifically, each of the low-temperature heat generating parts 2 has a square shape with a side length L (see FIG. 1) of 4 cm and a flat area of 16 cm ² while the high-temperature heat generating part 3 has a plan view in plan view. The shape is a right-angled isosceles triangle with a flat area of 32 cm ² , and the maximum temperature (46 ° C.) generated by the high-temperature heat generating part 3 with a large flat area is higher than the maximum temperature (40 ° C.) generated by the low-temperature heat generating part with a small flat area. It is high. In addition, the composition and basis weight of a heat generating body are the same in the low temperature heat generating part 2 and the high temperature heat generating part 3 in the heating tool 1, and the thickness is also the same. Therefore, the heating tool 1 has a low manufacturing cost, is excellent in handling at the time of storage, transportation, and use, and has an excellent appearance.
[0010]
The method (2) utilizes the fact that the maximum temperature increases as the air flow rate of the air permeable sheet covering the heat generating element increases, and the air flow rate of the air permeable sheet of the high temperature heat generating portion is reduced to the low temperature heat generating portion. By making it larger than the air flow rate of the air permeable sheet, the maximum temperature generated by the high temperature heat generating portion can be made larger than the maximum temperature generated by the low temperature heat generating portion.
[0011]
Heating elements in the present invention, such as those based on iron powder to be used in normal disposable warmer or the like, but may be used without particular limitation to heating in contact with iron-containing powder air, the method (2) Adjusts the maximum temperature by adjusting the amount of air supplied to the heating element, more specifically, iron powder that generates heat due to the oxidation reaction.
Therefore, as long as the breathable sheet is a sheet that can adjust the amount of air supplied to the heating element, there are no restrictions on the location and material of the ventilation sheet. For example, the heating element is disposed between a pair of top sheet and back sheet. When sandwiching and fixing to a sheet, only one of both sheets may be a breathable sheet, and the amount of ventilation of this breathable sheet may be different between the low temperature heat generating part and the high temperature heat generating part. The air flow rate of both sheets may be different between the low-temperature heat generating part and the high-temperature heat generating part. The breathable sheet may be a sheet made of various materials conventionally used for disposable warmers, and may be a laminated sheet.
[0012]
The air permeability of the breathable sheet can be measured in accordance with a moisture permeability test method (cup method) for moisture-proof packaging materials defined in JIS Z0208.
[0013]
As the method of (3), a method of different types of metal powder such as iron powder as a main component of the heating element, a component of the heating element, for example, any one of iron powder, water retention agent, water, salt, or the like There is a method in which the content in these two or more types of heating elements is made different between the low temperature heating part and the high temperature heating part.
[0014]
In the present invention, the maximum temperature generated by the high temperature heat generating part is preferably 2 ° C. or more, particularly 5 to 10 ° C. higher than the maximum temperature generated by the low temperature heat generating part. When the temperature difference between the two is 2 ° C. or more, effective heating can be achieved by taking full advantage of the characteristics of both the low temperature heating portion and the high temperature heating portion.
[0015]
Moreover, it is preferable that the maximum temperature which a low temperature heat generating part emits is 35-50 degreeC, especially 38-42 degreeC, and it is preferable that the maximum temperature which a high temperature heat generating part emits is 40-70 degreeC, especially 45-55 degreeC.
When the maximum temperature generated by the low-temperature heating part is less than 35 ° C, it is difficult to expect the heating effect by the low-temperature heating part in a normal environment. It becomes difficult to ensure the difference. Further, if the maximum temperature generated by the high temperature heat generating part is less than 40 ° C., it is difficult to ensure the above temperature difference with the low temperature heat generating part. However, it tends to cause discomfort due to high temperatures.
[0016]
Each of the low-temperature heat generating units 2, 2... And the high-temperature heat generating unit 3 in the heating device 1 of Embodiment 1 has a heating element 5 separately. That is, each of the low-temperature heat generating portions 2, 2... And the high-temperature heat generating portion 3 covers the back sheet 4, the heat generating body 5 placed on the back sheet 4, and the heat generating body 5. And the top sheet 6 adhered to the back sheet 4.
Each low-temperature heat generating portion 2 and the high-temperature heat generating portion 3 are connected to each other via a bendable connecting portion 7 including a back sheet 4 and a top sheet 6. Similarly, the low-temperature heat generating portions 2 are connected to each other via a bendable connecting portion 7 ′ composed of the back sheet 4 and the top sheet 6. Further, an adhesive is applied to the back surface of the back sheet 4, and an adhesive portion 8 is provided.
[0017]
In addition, as a forming material of the back surface sheet 4 and the surface sheet 6, a nonwoven fabric composed of polyethylene, polypropylene, polyethylene terephthalate, nylon, or a composite fiber in which two or more of these are combined, and a heating temperature and a heating time are adjusted. Examples thereof include a breathable laminated sheet made of an adjustment sheet. The air flow rate of the air permeable sheet such as the laminated sheet is preferably 50 to 300 g / m ² · 24 h from the viewpoint of easy adjustment when adjusting the duration of heat generation and the maximum temperature.
[0018]
Further, the heating element in the present invention is not particularly limited as described above, but iron powder is 50 to 70%, water is 5 to 30%, salt and water retention agent are 1 to 10% with respect to the weight of the heating element, respectively. What is contained is preferably used. Moreover, as an adhesive which forms the adhesion part 8, a rubber adhesive, an acrylic adhesive, a silicone adhesive, etc. are mentioned.
[0019]
The heating tool 1 can be used by being adhesively fixed to a desired part via the adhesive part 8. For example, it can be affixed to underwear such as shorts or clothing such as a shirt, and used to heat the abdomen, waist, shoulders, etc. in the same manner as a normal disposable body warmer.
[0020]
The heating device 1 includes the low-temperature heat generating portions 2 and 2 and the high-temperature heat generating portion 3 that are different in the maximum temperature to be emitted. Can be efficiently heated. In other words, the high-temperature heat generating part can intensively heat the part that you want to heat (such as a pot or the center point of pain), and the low-temperature heat generating part can gently heat the surrounding area. Discomfort due to the high temperature of the high temperature heat generating part can be suppressed while obtaining an excellent heating effect (such as a pain relieving effect due to thermal stimulation) due to the high temperature of the part. Since this heating device 1 can exhibit such effects, it can be preferably used for menstrual pain relief, back pain relief, shoulder stiffness relief, and the like.
Moreover, since the low-temperature heat generating part 2 and the high-temperature heat generating part 3 in the heating device 1 are connected by a connecting part that does not have a heating element, it can be easily bent at the connecting part. It is difficult to peel off carelessly and a stable wearing feeling is obtained.
[0021]
In the warming device 1, a composition and basis weight of the heating element 5 at a low temperature heating portion 2, 2-and high-temperature heating portion 3 are the same, the low temperature heating portion 2, 2-by the method of (1) Is different from the maximum temperature generated by the high-temperature heat generating part 3, so that it is extremely easy to manufacture and has excellent appearance and handling properties during storage, transportation and use.
Furthermore, since the warming tool 1 has the high temperature heat generating part 3 at the center thereof, the low temperature heat generating parts 2, 2.
[0022]
The heating tool 1 can be manufactured according to a well-known method. Usually, the heating tool 1 is sold by being sealed in a packaging bag or the like so that a known release paper is adhered to the adhesive section 8 so that the heating element 5 does not generate heat.
[0023]
FIG. 3 shows another embodiment of the heating device of the present invention. The heating tool 1 ′ shown in FIG. 3 is different from the heating tool 1 described above in the arrangement of the low-temperature heating units 2 and 2 and the high-temperature heating unit 3 and the respective flat areas. The basic configuration such as the central structure of each of the above and the laminated structure of each of the low temperature heating portions 2 and 2 and the high temperature heating portion 3 is the same as that of the heating device 1. Therefore, the same code | symbol is attached | subjected to the component similar to the heating tool 1, and the detailed description is abbreviate | omitted. Therefore, the description given above with respect to the warming tool 1 is applied to the warming tool 1 ′ as appropriate.
[0024]
In addition, the shape of the heating tool itself and the planar shape of each of the low temperature heating part and the high temperature heating part are not limited to the above-described embodiments, and can be various shapes such as a rectangle, a square, a triangle, and an ellipse. is there. Moreover, it can replace with the adhesion part in heating tool 1,1 ', and can also provide the engaging part formed using the male material (for example, "magic tape" registered trademark, the Kuraray company make) etc. of a mechanical fastener. .
[0025]
【The invention's effect】
Although the warming device of the present invention can obtain an excellent warming effect (pain relief effect by thermal stimulation, etc.), it is difficult for the user to feel discomfort due to high temperature, and the desired part is prolonged. It can warm up comfortably for hours.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a heating device of the present invention.
FIG. 2 is a cross-sectional view taken along the line AA in FIG.
FIG. 3 is a plan view showing another embodiment of the heating device of the present invention.
[Explanation of symbols]
1, 1 'heating tool 2 low temperature heating part 3 high temperature heating part 4 back sheet 5 heating element 6 top sheet 7 connecting part 8 adhesive part

Claims (4)

A low-temperature heating part having a heating element that contains iron powder and generates heat in contact with air; and a high-temperature heating part that has the heating element and emits a maximum temperature higher than the highest temperature that the low-temperature heating part emits. The heating tool is a heating tool in which the flat area of the high-temperature heating part is larger than the flat area of the low-temperature heating part , and the heating tool has the high-temperature heating part at the center of the heating tool . A low-temperature heating part having a heating element that contains iron powder and generates heat in contact with air; and a high-temperature heating part that has the heating element and emits a maximum temperature higher than the highest temperature that the low-temperature heating part emits. The air flow rate of the air permeable sheet covering the heat generating element in the high temperature heat generating portion is a heating tool larger than the air flow rate of the air permeable sheet covering the heat generating element in the low temperature heat generating portion. A heating device having the high-temperature heat generating part in the part .   The heating tool according to claim 2, wherein a flat area of the high temperature heat generating portion is larger than a flat area of the low temperature heat generating portion.   The low-temperature heat generating portion and the high-temperature heat generating portion are connected to each other via a connecting portion that does not have the heat generating element, and have a flat sheet shape as a whole. Heating tool.

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