WO2006006663A1

WO2006006663A1 - Moxibustion device

Info

Publication number: WO2006006663A1
Application number: PCT/JP2005/013016
Authority: WO
Inventors: Toshihiro Dodo
Original assignee: Mycoal Products Corporation
Priority date: 2004-07-14
Filing date: 2005-07-14
Publication date: 2006-01-19
Also published as: JP2007275084A

Abstract

It is intended to provide a moxibustion device which makes it possible to burn moxa on the skin with a sufficient heating effect while shortening the period of time required for starting the heating effect and effectively utilizing the heat generated by an oxidation reaction, thereby topically giving the heat stimulation in a focused manner and achieving favorable moxibustion effects. Namely, a moxibustion device wherein a molded article of a heat-generating composition, which is obtained by molding a heat-generating composition having an iron powder, a reaction promoter and water as the essential components and having a flowable water value of 0.01 to 10, is held between a base material and a coating, characterized in that the base material and/or the coating have an air-permeable face as a part thereof, the air-permeable face has an air permeability of 9 sec/300 cc or below, and the base material and/or the coating are provided with a fixation means.

Description

Warmth

Technical field

[0001] The present invention uses an exothermic composition that generates heat in the presence of oxygen, generates heat in a short time, puts moxa on the skin directly and ignites it, or pedestal wrinkles directly on the skin. Compared to acupuncture that adheres to the surface, it can be performed more efficiently under mild conditions, and it relates to a warming device that treats the affected area by applying a local thermal stimulus to a part of the body, especially the acupuncture point. is there. Background art

[0002] Acupuncture in oriental medicine improves blood circulation by local thermal stimulation on the acupuncture points above the meridians stretched around the body, including stiff shoulders, neuralgia, low back pain, It has been shown to be effective in the treatment and recovery of muscular fatigue, headache, rheumatism, digestive system diseases such as abdominal pain, respiratory system diseases such as colds, and gynecological diseases.

Conventionally, there are (1) Mogusa warmers, (2) warmers made by attaching a mosa formed in a cylindrical shape on a pedestal made of cardboard, etc., (3) electric warmers, ( 4) Force that uses a warming tool made by enclosing a composition that generates heat by an acid reaction in a disc-shaped container (1) It is attached to the affected part of a tub, and it is ignited and burned to give a thermal stimulus to the affected part.

In (2), the pedestal is affixed to the affected area of the skin for use. Since the pedestal serves as a heat buffer when burning the moss, intense heat acts on the skin. This reduces the risk of burning and leaving scars.

In (4), the container is attached to the affected area of the skin for use, and heat is generated by causing oxygen in the air to act on the internal composition by opening a hole in the container. It acts on the affected area to warm it.

However, in (1), it takes time to ignite because it uses mushroom combustion, and after burns remain, application to exposed surfaces such as the face is limited, and temperature control is difficult. As mogusa burns, heat is transmitted to the skin intensely, resulting in uneven glazing effects and often burns. (2) is sufficient for the skin, especially the affected area (hereinafter sometimes referred to as “skin”), because the pedestal serves as a heat buffer. In some cases, heat does not act, and (3) is electricity, so it is an expensive device and inconvenient to require a power source.

In addition, (4) is a type using an iron powder oxidation reaction. A hot water heater contains iron powder, metal acid salt and water in a container in advance, and the moisture is also contained in sawdust etc. A certain amount of capacity was required to generate heat, and the increase in size was a powerful force. Of course, the above configuration is only a miniaturization of the conventional “Ishigaku Iro”, which is heated to about 40 to 45 ° C, and is attached to a part of the human body with an adhesive on one side of the container. When attached, heat is transferred to a relatively large area, and heat stimulation cannot be concentrated on local points such as acupuncture points.

Furthermore, if the temperature of heat generation due to oxidation is insufficient, sufficient heat may not act on the skin, and depending on the person using it, the effect of heat may not always be sufficiently obtained. there were. It may take a long time for the skin to feel warm, even if it is used for the first time. Also, the time when the skin is warm may be short, and the warming effect may be insufficient. There was also a problem.

Further, at the time of production, it was necessary to prepare a shallow dish-shaped recess for storage having a flange on the base material sheet in advance, and the production surface was complicated.

We also propose a hot water heater that heats and adds heat during use, in which a heat-generating mixture mainly composed of iron powder and metal acid salt is filled and enclosed in a vouch composed of a sheet-like material with surface water absorption and breathability. However, water must be added at the time of use, and the heat generation temperature and heat generation time vary depending on the amount of water added, and water must be added each time. There was a risk of burns if the wrong amount was added, so the inconvenience of adding water during use was not solved.

In addition, there is also a rubber water pillow-shaped heat pack (operating temperature about 70 ° C) that is heated in a microwave oven, but this product is also destroyed when heated to a high temperature exceeding 100 ° C. Adjustment of the heating temperature is necessary, and it is difficult to say that it is suitable as a heat pack generally used.

Disclosure of the invention Problems to be solved by the invention

[0004] The present invention has been made in view of the above points, and it is possible to cause warmth by applying sufficient heat to the skin, and it is possible to shorten the time when the heat begins to act. It is an object of the present invention to provide a warming device that can effectively use the heat generated by the oxidation reaction, concentrate it locally and give a thermal stimulus, and obtain a high warming effect.

Means for solving the problem

[0005] The hot water heater of the present invention, as described in claim 1, is an exothermic product formed from an exothermic composition having a mobile water value of 0.01 to 10 and containing iron powder, a reaction accelerator and water as essential components. The composition molded body is housed between a base material and a covering material, and has a vent surface on the base material and Z or part of the covering material, and the air permeability of the vent surface is 9 sec Z300cc or less, A fixing means is provided on the substrate and Z or the covering material.

Further, the warming device according to claim 2 is the warming device according to claim 1, wherein the exothermic composition contains a binder, and the proportion of the binding agent is 0 with respect to 100 parts by weight of iron powder. .001 to 0.25 parts by weight.

Further, the warming device according to claim 3 is the warming device according to claim 1, wherein the exothermic composition includes a carbon component, a water retention agent, a water-absorbing polymer, a pH adjuster, a hydrogen generation inhibitor, an aggregate, Fibrous substances, functional substances, surfactants, organosilicon compounds, pyroelectric substances, moisturizers, fertilizer components, hydrophobic polymer compounds, heat generation aids, metals other than iron, metal acids other than iron oxide It is characterized by containing at least one selected from the group of additional components such as food, acidic substances or mixtures thereof.

Further, the hot water heater according to claim 4 is the hot water heater according to claim 1, wherein the exothermic composition is a mixture comprising at least iron powder, a carbon component, a reaction accelerator and water as essential components. It contains a component that has been contact-treated with a gas.

Further, the hot water heater according to claim 5 is the hot water heater according to claim 1, wherein at least a part of the surface of the iron powder is covered with an iron oxide film, and the thickness of the iron oxide film is Is at least 3 nm, and at least in the central region and the region force under the ferric oxide coating is in at least one selected region! Don't contain oxygen! / Active iron powder having an area of pig iron component is contained in an amount of 20 to 100% by weight. Further, the warming device according to claim 6 is the warming device according to claim 1, wherein the base material and the covering material are heat-sealed, so that the plurality of exothermic composition molded bodies are heat-sealed. And at least a part of the ventilation surface is covered with a ventilation adjusting material.

Further, the warming device according to claim 7 is the warming device according to claim 1, wherein at least a part of the vent surface includes a vent hole formed by perforation, and the vent hole is peeled off. It is characterized in that a non-breathable plastic film is attached so that it can be used.

Further, the hot water heater according to claim 8 is the hot water heater according to claim 7, characterized in that the air holes are concentrated in a central portion of the base material or the covering material. The

In the above-mentioned warming device, the fixing means is preferably a pedestal having a pressure-sensitive adhesive on the surface.

In addition, it is preferable that a magnetic body or a pressing tool is provided on the surface on which the pressure-sensitive adhesive layer is provided in the warming device.

Moreover, in the warmer, it is preferable that a part of the ventilation surface is made of a breathable heat insulating material.

Further, in the hot water heater, the breathable heat insulating material is preferably a breathable foam.

In the warmer, it is preferable that the exothermic composition molded body is contact-treated with an acidic gas.

Further, in the hot water heater, the iron powder is made of active iron powder having at least a part of the surface covered with a wustite film and having an x-ray peak intensity ratio with iron of 2 to 50% by weight. ~: It is preferable to contain LOO wt%.

Further, in the hot water heater, the exothermic composition molded body is preferably compressed.

Further, in the above-mentioned warmer, the base material and the covering material were temporarily attached with an adhesive, and then heat-sealed by a heat seal layer provided on the base material and Z or the covering material. It has a heat seal part, and it is preferable that the heat seal part contains an adhesive component of the adhesive.

Further, in the warmer, it is preferable that at least a part of the exothermic composition molded body is moved to a temporary attachment part to open a heat-sealed! The invention's effect

As described above, since the temperature of the part that directly touches the skin can be set to 45 ° C to 60 ° C, the warming device of the present invention obtains a very gentle and long lasting glazing effect as compared with the conventional one. It becomes possible. It is more effective that the pressure-sensitive adhesive layer directly touching the skin is 55 ° C to 60 ° C.

Further, in the warming device of the present invention, the temperature of the pressure-sensitive adhesive layer in contact with the skin can be maintained at 45 ° C. or more for 3 to 5 minutes. In conventional glazing, rapid heat rise and fall have been strong enough to achieve a thermal effect with such sustainability.

Furthermore,

1) Since it generates heat immediately without adding water during use, it can be used easily.

2) Heat generated in the heat generating part can be concentrated and transferred through the pedestal to the pedestal, and heat stimulation can be effectively applied to local parts such as acupuncture points of the human body in a relaxed state.

3) In the present invention, since the amount of water in the exothermic composition is reduced, a small and high exothermic temperature V soot can be obtained.

4) Especially, if a hole is opened in the pedestal, it has the effect of transferring heat to the human body through the effective use of the moisture confined in the hole.

5) The manufacturing process is simple, and a hot water heater can be manufactured at low cost.

6) By incorporating herbs and drugs such as far-infrared radiation materials and wormwood in the pedestal and adhesive layer, the penetration of heat into the body is enhanced, and an efficient glazing effect is produced in a relaxed state. it can.

7) A warmer with a non-breathable tape on the ventilation surface is an integrated inner bag and outer bag that saves materials and reduces the number of work steps during production. As a result, the cost could be reduced, and there was no change over time during storage, resulting in an economical heater. BEST MODE FOR CARRYING OUT THE INVENTION

[0007] The mobile water value is a value indicating the amount of excess water that can move out of the exothermic composition among the water present in the exothermic composition. This easy water value will be explained with reference to Figs. As shown in Fig. 8, NO. 2 (JIS P3801 type 2) filter paper 18 with 8 points drawn radially at 45 degree intervals as shown in Figs. Placed on the filter paper 18, and a template 19 with a length of 150mm x width of 100mm with a hollow cylindrical hole 20 with an inner diameter of 20mm x height of 8mm is placed in the center of the filter paper 18, and in the vicinity of the hollow cylindrical hole 20 Place the sample 21, move the push-in plate 15 along the mold plate 19, put it in the hollow cylindrical hole 20 while pushing the sample 21, and scrape the sample along the surface of the mold plate 19 . Next, as shown in FIG. 11, a non-water-absorbing 70 m polyethylene film 17 is placed so as to cover the hole 20, and a stainless steel flat plate 16 having a thickness of 5 mm, a length of 150 mm, and a width of 150 mm is further formed thereon. And hold for 5 minutes so that no exothermic reaction occurs. Thereafter, as shown in FIG. 12, the filter paper 18 is taken out, and the soaking locus of water or aqueous solution is drawn from the circumferential portion 24, which is the edge of the hole of the hollow cylinder, to the soaking tip along the radial line. Read in mm as distance 23. Similarly, the distance 23 is read from each line to obtain a total of 8 values. Each of the 8 values (a, b, c, d, e, f, g, h) read is taken as the measured moisture value. The arithmetic average of the eight measured moisture values is taken as the moisture value (mm) of the sample. In addition, the moisture content for measuring the true moisture value is the blended moisture content of the exothermic composition corresponding to the weight of the exothermic composition having an inner diameter of 20 mm and a height of 8 mm, and the water corresponding to the moisture content. Measure only in the same manner, and calculate the same value as the true moisture value (mm). The value obtained by dividing the moisture value by the true moisture value and multiplying it by 100 is the mobile water value.

That is, mobile water value = [moisture value (mm) Z true water value (mm)] X 100

For the same sample, measure five points, average the five mobile water values, and use the average value as the mobile water value of the sample.

[0008] In the present invention, the exothermic composition molded body obtained by molding the exothermic composition having an easy water value of 0.01 to: L0 excess water amount is laminated on a substrate, covered with a covering material, and at least exothermic composition is formed. It is possible to make a warming device simply by sealing the peripheral edge of the molded article. It is not necessary to add moisture after the base material is stored in a packaging material such as a coating material. This greatly simplifies the process. And there is an advantage in terms of cost.

The mobile water value (0 to: LOO) of the exothermic composition in the present invention is usually 0.01 to 10, preferably 1 to 10, more preferably 2 to 10, more preferably 3 ~ 10, more preferably 5 ~ 10. In addition, exothermic compositions with easy water values of less than 0.01 lack moldability. If it exceeds 10, it is necessary to remove a part of the moisture from the exothermic composition by water absorption or dehydration. That is, unless a part of moisture in the exothermic composition molded body is removed by water absorption or dehydration using a water absorbent packaging material or the like, heat will not be generated in a short time.

In addition, a water-absorbing polymer having a slow water absorption rate is used for the exothermic composition and shows a high mobile water value at the time of molding, but after a certain time, surplus water is taken into the water-absorbing polymer, and the exothermic composition molded body is easily When the exothermic state has a dynamic water value of 10 or less, and the excess water taken in becomes water used for heat generation, it is treated as an exothermic composition having an easy water value of 0.01 to 10. A warmer using a exothermic composition molded body obtained by molding a moldable exothermic composition using the surplus water of the present invention as a linking substance, wherein the exothermic composition comprises a coagulant aid, a dry binder, a coagulant, etc. The appropriate amount of surplus water represented by the mobile water value of 0.01 to 10 is used as the linking substance.

When the surplus water in the exothermic composition becomes an appropriate amount, the hydrophilic group in the composition component is hydrated by dipolar interaction or hydrogen bond, and also has a high structural property around the hydrophobic group. Is presumed to exist. As a result, it becomes sand sando state, and it is estimated that moldability of the exothermic composition occurs. This is connected water, which is a connected substance in some way. In addition to this, there is also water in a state that can be called free water, and if excess water increases, the structure will soften and free water will increase. The controlling factors that cause iron powder to oxidize are the amount of water present and the amount of oxygen supplied to the iron powder surface. The adsorbed water film (less than loo A) is said to have a low rate of acidity when water is sufficient. When the adsorbed film is about 1 m, the water content is sufficient. In addition, since the water film is thin, it is easy to supply oxygen to the iron powder surface, and the oxidation rate is high. If the membrane becomes thicker and the adsorbed membrane exceeds: m, it is estimated that the oxygen supply will decrease. The present invention was completed by obtaining the knowledge that the mobile water value indicating the optimum water content indicating a moldability and oxidation rate above a certain level was 0.01 to 10. That is, by using an appropriate amount of surplus water, each component particle is held together by the surface tension of water, causing the heat generating composition to form, and the water does not substantially function as a barrier layer. Generates heat when in contact with air. Furthermore, the use of an active exothermic composition using active iron powder makes the exothermic composition extremely remarkably excellent in exothermic heat build-up and has a high moldability. In addition, the water in the exothermic composition molded body produced by the molding lamination method generates heat without moving the packaging material to the water absorbent sheet. Furthermore, by providing a plurality of segmented heat generating parts in which the exothermic composition molded body is divided by a seal part, the warming apparatus itself has flexibility, so that it can be applied to places where flexibility is required such as various parts of the human body or objects having curved surfaces. It is possible to provide a hot water heater that is easy to wear and excellent in usability.

Further, in the base material, the covering material, and the exothermic composition molded body, at least the covering material and the exothermic composition molded body are temporarily attached via the adhesive layer, and then the peripheral portion of the exothermic composition molded body and the heating device. By heat-sealing the peripheral portion, the reliability of heat-sealing is improved, so that the high-speed heat production and the heat-sealing width can be reduced.

[0010] Moisture adjustment is to cover water or an aqueous solution of an exothermic promoter after contacting the exothermic mixture with an oxidizing gas. Although the amount to be added is not limited, for example, adding a reduced weight by contact treatment or obtaining a weight that achieves a desired mobile water value can be mentioned. Whether or not moisture adjustment is performed may be appropriately determined depending on the application.

[0011] Formability means that a laminate of a heat generating composition can be formed in the shape of a punched hole or a concave mold by mold-through molding using a punching die having a punched hole or squeeze molding using a concave mold. This shows that the molded shape of the exothermic composition molded body is maintained after molding including mold separation. If there is formability, the exothermic composition molded body is covered with at least the covering material, and the shape is maintained until the seal portion is formed between the base material and the covering material. Sealing is possible, and the heat generating composition is broken in the seal part. Since no loose sesame is scattered, the seal can be sealed without being broken. The presence of sesame causes poor sealing.

1) The measuring device consists of a stainless steel mold on the upper side of the endless belt that can run (thickness 2mm X length 2 OOmm X width 200mm plate) and a wearable plate that can be fixed, and a magnet (thickness 12.5mm x length 24mm x width 24mm, two magnets in parallel) on the opposite side of the endless belt. in front The recording magnet covers an area larger than the area covered with the edge (40 mm) perpendicular to the direction of travel of the punching hole and the direction perpendicular to the cutting plate and the vicinity thereof.

2) As a measurement method, a stainless steel plate with a thickness of lmm x length 200mm x width 200mm is placed on the endless belt of the measuring device, and a polyethylene vinylome of thickness 70 ^ m x length 200mm x width 200mm is placed on it. And then place a stainless steel mold on it. Then, after fixing the scraping plate at a position 50 mm from the advancing side end of the endless belt of the punching hole of the mold, 50 g of the exothermic composition is placed near the scraping plate between the scraping plate and the punching hole. Move the endless belt at 1.8mZmin and fill the punching hole of the mold while scraping off the exothermic composition. Stop the running of the endless belt after the mold has completely passed through the frayed plate

. Next, the mold is removed and the exothermic composition molded body laminated on the polyethylene film is observed.

3) As a judgment method, in the peripheral part of the exothermic composition molded body, the exothermic composition molded body having a maximum length of 300 to 800 m without a broken piece of the exothermic composition molded body having a maximum length exceeding 800 m. It is assumed that the exothermic composition has formability when the number of pieces of collapse is 5 or less. This is an essential property for the exothermic composition used in the molding method. Without this, it is impossible to manufacture a hot water heater by a molding method.

[0012] Compression resistance means that a heat generating composition molded body having a thickness of 70% of the mold thickness is 80% or more of the heat generating composition molded body before compression. Maintaining the heat build-up property (temperature difference between 1 minute and 3 minutes after the start of the heat generation composition heat generation test). For example, by using a heat generation test apparatus for a heat generating composition, the heat generating composition is stored in the punch hole by through-molding using a punch die having a punch hole, and then a convex shape similar to the punch hole in the mold. The exothermic composition is compressed to a mold thickness (3 mm) of 7Z10 (2. lmm) to form a 2. lmm exothermic composition molded body. A standard heating device made of a heat generating composition molded body with a thickness of 3 mm and a heat generating composition molded body prepared by a similar method using a heat generating composition, a base material and a coating material. If the heat build-up property (temperature difference between 1 minute and 3 minutes after the start of the test in the exothermic test of the exothermic composition) is 80% or more of a standard warmer, the exothermic composition is said to be compressible. . It may be 100% or more.

[0013] The exothermic test of the exothermic composition is as follows. First, the ambient temperature 20 ± 1 ° C exothermic group Leave the product in a non-breathable outer bag for 1 hour.

1) A magnet is provided in the shape of the punched hole in the mold under the center of the support plate made of vinyl chloride (thickness 3mm x length 600mm x width 600mm).

2) Place the temperature sensor on the center of the support plate.

3) Thickness with an adhesive layer of 80 μm thickness 25 ^ m X length 250 mm X width 200 mm Attached to the support plate through the adhesive layer so that the center of the polyethylene film is at the sensor .

4) Remove the exothermic composition from the outer bag.

5) Place a template of length 250mm x width 200mm with a hole 80mm long x 50mm wide x 3mm high above the center of the polyethylene film, place the sample near the hole, and push it in Is moved along the template, and the sample is pushed into the punched hole, the sample is scraped along the template surface (mold press molding), the sample is filled in the mold, and then the magnet under the support plate is moved. Except, start temperature measurement. Use a data collector to measure the exothermic temperature, measure the temperature for 10 minutes at a measurement timing of 2 seconds, and determine the rise of the exotherm with the temperature after 3 minutes.

[0014] The exothermic test of the heater was in accordance with the JIS temperature characteristic test.

[0015] The active iron powder has a region where oxygen and iron are present, and has a thickness of 3 nm or more and a region where oxygen is not present and iron is present by Auger electron spectroscopy. It is iron powder. Or, in the X-ray peak intensity ratio of the content force iron wustite, an iron powder 2-50 weight ^_0/0. In addition, when the active iron powder is prepared using a mixture containing at least one of iron powder and other essential components (carbon component, reaction accelerator, water), iron is used from the prepared mixture using a magnet or the like. The powder is separated and measured by Auger electron spectroscopy as a sample, and has an area where oxygen and iron exist, the thickness of the area is 3 nm or more, and at least an area where oxygen and iron exist When at least one region selected from the region below the central region of the powder and the region where oxygen and iron are present has an iron component region that does not contain oxygen, the iron powder is assumed to be active iron powder. Alternatively, use an X-ray analyzer to determine the amount of wustite, and if the amount is 2 to 50% by weight or more in terms of the X-ray peak intensity ratio with iron, the iron powder is assumed to be active iron powder. [0016] An exothermic mixture is a reaction mixture containing iron powder, a carbon component, a reaction accelerator and water as essential components, a water content of 1 to 30% by weight, and a mobile water value of less than 0.01. Under an ambient temperature of C or higher, the temperature rise of the reaction mixture is set to 1 ° C or higher. As long as the oxidation gas contact treatment causes the reaction mixture to change some characteristics, the iron powder does not necessarily have to be oxidized, but is preferably oxidized. In that case, the iron powder is preferably activated iron powder.

[0017] The active exothermic composition is an exothermic composition according to any one of the following 1-3.

1.A mixture of iron powder, carbon component, reaction accelerator and water as an essential component in contact with an oxidizing gas, or a mixture of the oxidizing gas and contact treated with water or an aqueous solution of reaction accelerator. In addition, the water is adjusted.

2. Iron powder, carbon component, reaction accelerator, water are essential components, the water content is 1-30% by weight, and the mobile water value is less than 0.01. At this time, the temperature of the reaction mixing part is kept at 40 ° C or more for 2 seconds or more, or the mixture of the oxidizing gas and the contact-treated mixture is added with water or a reaction accelerator aqueous solution to adjust the water content.

3. Iron powder, carbon component, reaction accelerator, water are essential components, and iron powder containing 20 to: LOO% of active iron powder is used.

[0018] The oxidizing gas contact treatment refers to a mixture of exothermic composition components or an exothermic composition continuously with an oxidizing gas (oxygen, air, etc.) in an oxidizing gas atmosphere or by blowing an oxidizing gas. In this method, the iron component is partially oxidized by intermittent contact. The method for determining the degree of oxidation is not limited, but the mobile water value of the mixture or exothermic composition, contact time with oxidizing gas, exothermic temperature rise rate at contact, exothermic temperature at contact, maximum temperature at contact. An example is a method of determining the degree of oxidation by determining the degree of contact between the mixture or the heat-generating composition and the oxidizing gas based on the heat temperature, the maximum exothermic temperature at the time of contact, the predetermined temperature lowered, or a combination thereof.

[0019] For example,

1) Exothermic composition with easy water value of 10 or less (for example, less than 0.01, 0.01 to 10 or less) is exposed to air while fluidizing with stirring, etc. The air is shut off and returned to room temperature for a desired time until it exceeds the temperature to obtain an exothermic composition. In particular, easy water Preference is given to an acidic gas contact treatment in which an exothermic mixture or composition having a value of less than 0.01 is agitated and exposed to air to cause self-heating.

2) Contact the exothermic composition with a mobile water value of more than 10 in contact with air, shut off the air at the desired time, and make the exothermic composition.

3) To the exothermic composition obtained in either 1) or 2), water or an aqueous solution of a reaction accelerator is added, the water content is adjusted, and mixed to obtain the desired mobile water value as the exothermic composition. . The weight of the water or the reaction accelerator aqueous solution to be added to the moisture adjustment is not limited, but the weight reduced before the exposure of the mixture or the exothermic composition to air, that is, the weight before the self-heating is reduced. A weight corresponding to the excess weight is given as an example. If desired, the temperature state of the mixture and the exothermic composition can be determined by heating the mixture, heating the exothermic composition and warming, keeping the temperature, cooling the reaction container, or the like before or during the contact treatment. You can control it. As a result, an exothermic composition having a remarkably excellent exothermic rising property can be obtained.

[0020] The acidic gas may be any gas as long as it is acidic and oxygen / air, or an inert gas such as oxygen gas, air, nitrogen gas, argon gas, or helium gas. An example is a mixed gas with a gas containing oxygen. Air is particularly preferable.

[0021] The temperature of the oxidizing gas, the contact treatment temperature, and the contact treatment time can be appropriately determined as desired without any limitation if the atmosphere in the contact treatment region is not deficient and an oxidation reaction of the iron component occurs. The temperature of the oxidizing gas is preferably 0 to 200 ° C, more preferably 10 to 150 ° C, and further preferably 20 to 100 ° C. The treatment time is preferably 1 second to 10 minutes, more preferably 5 seconds to 7 minutes, and further preferably 15 seconds to 5 minutes. In the process, it is preferable that the processing time is short.

[0022] The amount of oxidizing gas used may be adjusted according to the type of oxidizing gas, the type and particle size of iron powder, the amount of moisture, the processing temperature, the processing method, etc. For example, with respect to 200 g of iron powder, the amount of air is preferably 1 to 1000 liters Z at 1 ° C. and 100 ° C. air. In the case of other oxidizing gases, it may be converted by the oxygen concentration based on the case of air.

[0023] If desired, an acidic substance or a peroxide may be added during the oxidizing gas contact treatment. Excessive Examples of the acid oxide include hydrogen peroxide and ozone.

The ferric oxide coating is a coating made of iron containing oxygen such as iron oxide, hydroxide, oxyhydroxide and the like.

[0025] The thickness of the ferric oxide film is 0 p when the surface of the iron powder is sputtered with Ar at a sputtering rate of 1 lnm / min in terms of Fe in the depth direction using Auger electron spectroscopy. This is the portion where the ratio (IoZli) of the peak strength (Io) to the peak intensity (Ii) of Fe is 0.05 or higher. Therefore, the thickness of the iron oxygen-containing film of the present invention is the distance in terms of Fe from the surface of the iron powder to the depth where (IoZli) is 0.05. The measurement conditions of the Auger electron spectroscopy are a sputtering time: 15 minutes and a sputtering rate: l lnmZ (Fe conversion). The thickness of the ferric oxide coating can be calculated by converting the sputtering time from the surface of the iron powder to the depth at which (IoZli) is 0.05, into thickness.

The thickness of the iron oxide film covering the surface of the iron powder is usually 3 nm or more, preferably 3ηπι to 100 / ζ πι, more preferably 30 nm to 100 μm, using Auger electron spectroscopy. m, more preferably 30 nm to 50 μm, further preferably 30 nm to 1 μm, further preferably 30 nm to 500 nm, and further preferably 50 nm to 300 nm. By setting the thickness of the iron oxygen-containing film to 3 nm or more, the iron oxygen-containing film can exert the effect of promoting the acid-oxidation reaction, and immediately starts the oxidation reaction upon contact with an oxidizing gas such as air. It can be made. If the thickness of the iron oxygen-containing film is 100 m or more, the heat generation time may be shortened, but it can be used depending on the application.

[0026] wustite amount and uses the X-ray analyzer, iron (a Fe) integrated intensity force peaks 220 plane of the integrated intensity of the peak of the 110 plane and FeO (wustite) also by the following equation ^_0/0 displayed It is a representation.

Wustite content (%) = 100 X KFeOZ (K a Fe)

KFeO: Integral intensity of 220-side peak of FeO (wustite)

K a Fe: Integral intensity of the peak of the 110 plane of iron (a Fe)

The amount of wustite is usually 2 to 50% by weight, preferably 5.01 to 50% by weight, more preferably 5.01 to 40% by weight, more preferably 6 to 40% by weight, still more preferably. Is 7 to 30% by weight, more preferably 7 to 25% by weight. Even if it exceeds 50% by weight, it generates heat. The start-up property is good, but the duration of heat generation is shortened. If it is less than 2% by weight, the heat build-up force S becomes dull.

The fixing means of the present invention is not limited as long as it has a fixing capability capable of fixing a heater or a heater having a heat generating portion to a required portion.

Adhesive layers, key hooks, hook buttons, hook-and-loop fasteners such as berg mouths, magnets, bands, strings, etc., and combinations thereof, which are generally employed as the fixing means, can be arbitrarily used.

In the case of a band, the adjustment fixing means may be further constituted by a combination of a hook-and-loop fastener and an adhesive layer.

Here, the hook-and-loop fastener is known by trade names such as Velcro (registered trademark), Velcro fastener (registered trademark), Berg mouth fastener, hook-and-loop tape, and the like. It has a fastening function in combination with a hook that is a male fastener that can be fastened with a fastener. Examples of the material having the loop function include a nonwoven fabric, a woven fabric of yarn having fluff and traps, and the like. Even if the core material forming the band is coated with a material having the loop function (female fastener function). It ’s okay, but you can make up the band by itself! The hook member, which is a male fastener member, is not particularly limited, but examples thereof include those formed by a polyolefin resin such as polyethylene and polypropylene, polyamide, polyester and the like. The shape of the hook is not particularly limited, but hooks with a cross-sectional shape of I shape, inverted L shape, shape, so-called mushroom shape, etc. are easily caught on the loop and extremely hard on the skin. This is preferable in that it does not give a sense of irritation. The hook may be provided over the entire area of the fastening tape, or the tape base may be omitted and only the hook may be used as the fastening tape.

The pressure-sensitive adhesive layer includes a water retention agent, a water-absorbing polymer, a pH adjuster, a surfactant, an organic key compound, a hydrophobic polymer compound, a pyroelectric substance, an antioxidant, an aggregate, a fibrous material, a moisturizing agent, Functional substance or mixture of these ingredients Additional component power Contains at least one selected.

As the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer, any solvent-based, water-based, emulsion-type, hot-melt type is applicable as long as it has an adhesive force necessary to adhere to the skin or clothes. Various forms such as reactivity, pressure sensitive system and the like are used.

The pressure-sensitive adhesive layer includes a non-hydrophilic pressure-sensitive adhesive layer composed of a non-hydrophilic pressure-sensitive adhesive and a hydrophilic pressure-sensitive adhesive layer composed of a hydrophilic adhesive.

The non-hydrophilic pressure-sensitive adhesive layer containing a water-absorbing polymer or a water retention agent is treated as a non-hydrophilic pressure-sensitive adhesive layer.

A hot melt adhesive may be provided between the hydrophilic adhesive layer and the substrate or the covering material.

In addition, when the hydrophilic pressure-sensitive adhesive layer is provided on the warming device, the pressure-sensitive adhesive layer may be provided on the warming device after the sealing treatment of the warming device without restriction.

Further, the pressure-sensitive adhesive layer may be air permeable or non-air permeable. What is necessary is just to select suitably according to a use. As for air permeability, it is only necessary to have air permeability as a whole. For example, a pressure-sensitive adhesive layer in which a pressure-sensitive adhesive is partially present and a part in which a pressure-sensitive adhesive is not present is present, and the entire region is breathable can be given as an example. When laminating the adhesive on the breathable base material and Z or coating as it is, the method of maintaining the breathability is, for example, by printing the adhesive or transferring the adhesive layer partially. The non-laminated part is used as a ventilation part, and the adhesive is moved in one direction or while moving in a zigzag while drawing a circle in a thread shape. Examples thereof include a method in which air permeability or moisture permeability is maintained in the gap between the thread-like adhesives, or a method of foaming the adhesive.

The non-hydrophilic pressure-sensitive adhesive layer is composed of an acrylic pressure-sensitive adhesive, a vinyl acetate pressure-sensitive adhesive (emulate acetate resin-based emulsion, ethylene-bulb resin hot melt pressure-sensitive adhesive), polyvinyl alcohol pressure-sensitive adhesive, polyvinyl Acetal adhesive, vinyl chloride adhesive, polyamide adhesive, polyethylene adhesive, cellulose adhesive, black mouth-prene (neoprene) adhesive, nitrile rubber adhesive, polysulfide adhesive, polyuretan Examples of the pressure sensitive adhesive include butyl rubber pressure sensitive adhesive, silicone rubber pressure sensitive adhesive, styrene pressure sensitive adhesive (for example, styrene hot melt pressure sensitive adhesive), rubber pressure sensitive adhesive, and silicone pressure sensitive adhesive. Among these, rubber adhesives, acrylic adhesives, or acrylic adhesives are used because they have high adhesive strength, are inexpensive, have long-term stability, and do not decrease in adhesive strength even when heated. Is preferably an adhesive containing a hot-melt polymer.

In addition to the base polymer, the pressure-sensitive adhesive may optionally contain other components such as rosin, coumarone indene resin, hydrogenated petroleum resin, maleic anhydride-modified rosin, rosin derivatives or C5 petroleum oil. Tackifiers such as petroleum spheroids represented by alicyclic petroleum resins such as fats, and phenolic tackifiers such as terpene phenolic rosin, rosin phenolic sucrose, and alkylphenolic sallow. (Especially, tackifier with an Arin point of 50 ° C or less), softeners such as coconut oil, castor oil, olive oil, camellia oil, liquid paraffin, softener, anti-aging agent, filler, aggregate, Adhesion modifiers, adhesion improvers, colorants, antifoaming agents, thickeners, modifiers, etc. may be added as appropriate to improve performance such as improving the adhesion to nylon clothing and blended fabric clothing. .

Examples of the hot melt pressure-sensitive adhesive include known hot-melt pressure-sensitive adhesives that are imparted with tackiness. Specifically, styrenic pressure-sensitive adhesives, polyester-based pressure-sensitive adhesives based on polyester, and acrylic resin Acrylic adhesives based on polyethylene, ultra-low density polyethylene, polypropylene, ethylene α-olefins, polyolefin adhesives based on polyolefins such as ethylene acetate copolymer, 1,2-polybutadiene Examples include 1,2-polybutadiene-based pressure-sensitive adhesives used as the base polymer, pressure-sensitive adhesives with modified properties that have improved adhesiveness and stability, or a mixture of two or more of these pressure-sensitive adhesives. . In addition, a pressure-sensitive adhesive layer composed of a foamed pressure-sensitive adhesive or a pressure-sensitive adhesive layer composed of a cross-linked pressure-sensitive adhesive can also be used. As the non-aromatic hot-melt pressure-sensitive adhesive, the base polymer is aromatic. There is no limitation as long as it is a hot-melt adhesive that does not contain a group ring. Examples include olefin-based hot-melt adhesives and acrylic hot-melt adhesives. Examples of the non-aromatic polymer that is a base polymer that does not contain an aromatic ring include polymers and copolymers such as olefin and gen. One example is an olefin polymer. Examples of the olefin polymers include ethylene and α-olefin polymers or copolymers. Further, as other monomers, those added with gen such as butadiene and isoprene may be used. α-olefin is not limited as long as it has a double bond at the end. Examples include len, butene, heptene, hexene, otaten and the like.

Aromatic hot melt adhesives are hot melt adhesives whose base polymer contains an aromatic ring. Styrenic hot melt adhesives typified by A-B-A type block copolymers, etc. Is given as an example.

In the A-B-A type block copolymer, the A block is a monovinyl-substituted aromatic compound such as styrene and methylstyrene, and is an inelastic polymer block, and the B block is an elasticity of conjugated gen such as butadiene and isoprene. Specific examples of the polymer block include styrene butadiene styrene block copolymer (SBS), styrene isoprene styrene block copolymer (SIS), and hydrogenated types thereof (SEBS, SIPS, etc.). These may be used in combination.

A pressure-sensitive adhesive layer in which a water-absorbing polymer is further blended with the non-hydrophilic pressure-sensitive adhesive can be used as a measure for preventing a decrease in pressure-sensitive adhesive force due to an increase in water content of the non-hydrophilic pressure-sensitive adhesive layer.

The hydrophilic pressure-sensitive adhesive that constitutes the hydrophilic pressure-sensitive adhesive layer is not particularly limited as long as it has a hydrophilic polymer or a water-soluble polymer as a main component, has adhesiveness, and is hydrophilic as the pressure-sensitive adhesive.

Examples of the constituents of the hydrophilic pressure-sensitive adhesive include a hydrophilic polymer such as polyacrylic acid, a water-soluble polymer such as sodium polyacrylate and polyvinylpyrrolidone, and a crosslinked aluminum hydroxide-metasilicate metal aluminate metal salt. Agents, softeners such as glycerin and propylene glycol, higher hydrocarbons such as light liquid paraffin polybutene, primary alcohol fatty acid esters such as isopropyl myristate, key compounds containing silicone oil, monoglyceride, etc. Fatty acid glycerin esters, oily components such as olive oil and other vegetable oils, preservatives such as methyl hydroxyoxybenzoate and propyl paraoxybenzoate, solubilizers such as N-methyl-2-pyrrolidone, and thickeners such as carboxymethylcellulose Agent, polyoxyethylene hydrogenated castor oil sorbitan fatty acid ester Surfactants such as tellurium, oxycarboxylic acids such as tartaric acid, light anhydrous carboxylic acids, water-absorbing polymers, excipients such as kaolin, moisturizers such as D-sorbitol, sodium edetate, paraoxybenzoic acid esters, tartaric acid, etc. Examples of such stabilizers include cross-linkable water-absorbing polymers, boron compounds such as boric acid, water, and the like. Also, any combination of these forces can be configured. In addition, when the adhesive layer is a hydrophilic adhesive layer, if there is a difference in water retention between the hydrophilic adhesive layer and the exothermic composition, a packaging material such as a base material between them Moisture movement takes place via both, and inconvenience occurs for both. This happens especially during storage. In order to prevent this, it is preferable to provide a moisture-proof packaging material between them. By using this, it is possible to prevent moisture from moving when the warmer is stored and stored in the outer bag, which is a non-breathable storage bag.

When a hydrophilic pressure-sensitive adhesive layer is used for the pressure-sensitive adhesive layer, the moisture permeability of the moisture-proof packaging material provided between the exothermic composition molded body and the hydrophilic pressure-sensitive adhesive layer is within a range that does not affect the heat generation performance. However, the moisture permeability by the Rissy method (Lyssy method) is usually ² gZm ² Zday or less, preferably 1.0 gZm ² Zday or less, more preferably 0.5 gZm ² Zday. Or less, and more preferably 0.01 to 0.5 gZm ² Zday. Here, the values are under the conditions of 40 ° C and 90% RH under atmospheric pressure. The moisture-proof packaging material can be used as a base material or a coating material, or can be laminated alone on a base material or a coating material.

Examples of the moisture-proof packaging material include a metal vapor-deposited film, a metal oxide vapor-deposited film, a metal foil laminate film, and an EVOH (ethylene 'bule alcohol copolymer, ethylene' bule acrylate copolymer oxide) film. , Biaxially stretched polybulal alcohol film, polysalt vinylidene coat film, polysalt vinylidene coat film formed by applying polysalt vinylidene to a base material film such as polypropylene, metal foil such as aluminum foil A transparent barrier with a structure in which a non-air-permeable packaging material obtained by vacuum deposition or sputtering of a metal such as aluminum on a polyester film base material, and a flexible plastic base material on which silicon oxide and aluminum oxide are provided. An example is a laminate for packaging using an adhesive film. Non-breathable packaging materials used for the outer bags and the like can also be used.

In addition, a packaging material such as a moisture-proof packaging material disclosed in Japanese Patent Application Laid-Open No. 2002-200108 can also be used, and the contents of this description are incorporated in the present invention.

When using a water-containing hydrophilic pressure sensitive adhesive (such as Giel) in the pressure sensitive adhesive layer, a reaction accelerator such as sodium chloride in the heat generating composition is used to adjust the water balance between the heat generating composition and the pressure sensitive adhesive layer. And the water-absorbing polymer, etc., in the range of 10 to 40% by weight, preferably 15 to 40% by weight, more preferably 1 You can adjust it in the range of 5-30% by weight! /.

Further, as a pressure-sensitive adhesive having good moisture permeability and low irritation to the skin, a water-containing pressure-sensitive adhesive (hydrophilic pressure-sensitive adhesive, Jewel) such as JP-A-10-265373 and JP-A-987173 can be used. 6-145050, JP-A-6-199660, hot-melt-adhesive adhesives are disclosed in JP-A-10-279466 and in JP-A-10-182408. Agents are also useful, citing each of these references, the entire text is incorporated herein.

The functional substance constituting the pressure-sensitive adhesive layer is not limited as long as it is a substance having a function, but it is a fragrance compound, a plant extract, a herbal medicine, a fragrance, a slimming agent, an analgesic, a blood circulation promoter, a swelling improving agent, Antibacterial agent, bactericidal agent, fungicide, deodorant, deodorant, transdermal drug, lipolytic component, negative ion generator, far-infrared radiator, magnetic substance, poultice, cosmetics, bamboo vinegar or Wood vinegar liquid power As an example, at least one kind selected.

Specifically, aromatic compounds such as menthol and benzaldehyde, plant extracts such as mugwort extract, herbal medicines such as mogusa, fragrances such as lavender and rosemary, slimming agents such as aminophylline and tea eks, indomethacin, dl— Analgesics such as camphor, blood circulation promoters such as acidic mucopolysaccharides, force mitre, swelling improvement agents such as citrus tincture and flavone derivatives, poultices such as boric acid water, physiological saline, alcohol water, Lipolytic components such as caffeine and tonaline, aloe extract, vitamins, hormones, antihistamines, cosmetics such as amino acids, carboxylic acid derivatives, boric acid, iodine agents, reverse sarcolic acid, salicylic acid substances, iow Examples include antibacterial agents such as antibiotics, bactericides, and fungicides.

The percutaneously absorbable drug is not particularly limited as long as it is percutaneously absorbable, but corticosteroids, anti-inflammatory analgesics, hypertensives, anesthetics, hypnotic sedatives, and psycholeptics. Antibacterial substances, antifungal substances, skin irritants, anti-inflammatory agents, antiepileptics, analgesics, antipyretics, anesthetics, bactericides, antimicrobial antibiotics, vitamins, antiviral agents, swelling improvers, diuresis Agents, antihypertensive agents, coronary vasodilators, antitussive expectorants, slimming agents, antihistamines, arrhythmic agents, cardiotonic agents, corticosteroids, blood circulation promoters, local anesthetics, fat decomposition components, etc. Examples include, but are not limited to, mixtures. This These drugs are used alone or in combination of two or more as required.

The content of the functional substance is not particularly limited as long as the medicinal effect can be expected. However, the content of the functional substance is not limited from the viewpoint of pharmacological effect, economic efficiency, adhesive strength, and the like. Preferably it is 0.01-25 weight part with respect to 100 weight part of adhesives, More preferably, it is 0.5-15 weight part.

In addition, the pressure-sensitive adhesive layer may be provided on the entire surface as long as the heater can be fixed, or may be provided partially or intermittently. Various shapes such as a net shape, a stripe shape, a dot shape, and a belt shape can be given as examples.

[0028] The base material is made of a non-breathable material or a breathable material.

The non-breathable material is not limited as long as it has non-breathability. Polyethylene, polypropylene, nylon, acrylic, polyester, polyvinyl alcohol, ethylene monoacetate

Examples include films, sheets, and coatings that have polymer strength such as rubber copolymers, and those obtained by laminating metal (including semiconductor) compounds such as silicon oxide and composite materials using them.

[0029] For example, at least one or more kinds of breathable films such as porous films and perforated films, papers, nonwoven fabrics, and the like that are individually breathable, papers, and breathable films are laminated. Made of breathable, non-breathable packaging material with a polyethylene film laminated to a non-breathable wrapping material with fine holes using needles, etc., made of fibers and thermocompression bonded Examples include non-woven fabric, porous film with controlled air permeability, or a filter material for a vacuum cleaner dust collection bag in which a non-woven fabric is bonded to a porous film.

Here, the perforated film is a non-breathable film such as a polyethylene film provided with fine holes with a needle so as to be breathable.

[0030] Examples of the air permeability include a porous film, a perforated film, and a film perforated in the porous film that are not limited as long as heat generation can be maintained. In consideration of the air permeability, a perforated film is preferable.

The air permeability of the ventilation surface and the breathable material is a gas permeability according to the Gurley gas permeability measured by JIS P8117, preferably 9 sec Z300cc or less, more preferably 5 sec Z300 cc or less, more preferably 3 sec Z 300 cc or less, more preferably 2 sec Z 300 cc or less.

In addition, the gas permeability according to the Gurley gas permeability is about 0.4 sec / 300cc, so the gas permeability exceeding the above measurement limit and the flame permeability measured by IS L1096 measurement method are preferably 40 or less, more preferably l~40ccZcm ² Zsec, more preferably from l~20ccZcm ² Zsec, more preferably 1~: LOccZcm ² / sec der o

Also, if the gas permeability in accordance with the Gurley gas permeability exceeds 9secZ300cc, the air permeability is insufficient, the heat generation startability is lowered, and the maximum temperature reached is lowered.

[0031] Examples of breathable packaging material by perforation include, for example, at least one pin, preferably, for example, a taper point and a diameter of about 0.2 mm to about 2 mm, preferably about 0.4 mm to about 0.9 mm. Perforating at least one film layer wrapper so as to have a vent with an array of from about 20 pins to about 60 pins.

Alternatively, after the substrate and dressing have been joined, one side of the hot tub has, for example, a taper point and a diameter of about 0.2 mm to about 2 mm, preferably about 0.4 mm to about 0.9 mm. At least one film layer wrapper can be perforated such that it is perforated using an array of about 20 pins to about 60 pins.

These pins can also be compressed on one side of the hot tub to a depth of about 2% to about 100%, preferably about 20% to about 100%, more preferably about 50% to about 100%. It may be inserted into the exothermic composition molded body and the packaging material as the base material or coating material may be perforated.

It is preferable to provide perforations in the packaging material covering the upper part, but it is also possible to provide perforations in the packaging material covering the lower part.

The rate, duration, and temperature of the heat-generating oxidation reaction of the exothermic composition molded body can be adjusted as desired by changing the contact area with air, in particular by changing the oxidative diffusion Z permeability. .

[0032] In the present invention, examples of the air-permeable packaging material perforated with micropores include the following configurations.

(1) Polyethylene terephthalate, polyamide, polypropylene, polycarbonate, cellopha Polyethylene, polypropylene, and ethylene acrylic acid are coated on heat-resistant films such as polyethylene, polymethylbenten, polybutyl alcohol, and other films, polyvinyl chloride coated films, aluminum foil laminated films, and aluminum deposited films. A porous film is formed by laminating and adhering a sealing film made of polymerized resin, ethylene ethyl acrylate copolymer resin, ionomer, polybutadiene, ethylene vinyl acetate copolymer resin film, etc. Laminated packaging material.

(2) The above heat-resistant film alone or the laminated film of (1) above and a heat-sealable nonwoven fabric (for example, wet made from synthetic fibers such as polypropylene and polyethylene, composite fibers, synthetic pulp, etc. A laminated wrapping material formed by perforating a laminated sheet obtained by laminating and adhering a dry nonwoven fabric).

(3) A packaging material in which microporous material is perforated in a single film having heat sealing properties such as heat sealable polyethylene terephthalate and polypropylene.

(4) A packaging material obtained by forming micropores in the heat resistant film alone or in a laminated film obtained by applying hot melt as a sealing layer to the laminated film of (1).

(5) Laminated film and paper of (1) above (including various papers such as oil-resistant paper, water-resistant oil-resistant paper, etc.) or non-woven cloth, polyethylene, polypropylene, ethylene acrylic acid copolymer resin, ethylene ethyl acrylate Copolymerized resin, ionomer, polybutadiene, ethylene acetate butyl copolymer Copolymers such as microporous film formed on both sides of a laminated packaging material made by laminating and adhering a sealing film such as a resinous film. .

(6) Polyethylene, polypropylene, ethylene acrylic acid copolymer resin, ethylene acrylate copolymer resin, ionomer, polybutadiene, and ethylene acetate butyl resin on paper (including various papers such as oil and water resistant paper) A packaging material obtained by perforating a laminated packaging material formed by laminating and bonding a sealing film made of a polymerized resin film or the like.

The breathable packaging material (6) is preferably used as a double packaging material that is laminated with the breathable packaging material (1) without sticking.

Moreover, as a vacuum cleaner dust bag filter material, a commercially available vacuum cleaner dust bag filter material can be used.

For example, plant fiber such as hemp pulp, wood pulp, esbalt pulp, rayon fiber Recycled fibers such as vinylon fiber, synthetic fibers such as polyester fibers, synthetic binder fibers such as PVA fibers and polyester binder fibers, and filter materials made by wet papermaking by mixing micro glass fibers in an appropriate ratio, and plant fibers It is a filter material made by impregnating an emulsion type binder into a sheet composed of one or two layers of synthetic fiber, synthetic binder fiber, and micro glass fiber.

Here, once the fiber sheet is made using wood pulp, hemp pulp as plant fiber, polyester fiber, vinylon fiber as synthetic fiber, polyester binder fiber, PVA fiber as synthetic binder fiber, and micro glass fiber with fiber diameter of 1 μm or less. Form.

As the hemp pulp, Manila hemp thermo-mechanical pulp (hereinafter abbreviated as TMP), and as the wood pulp, NBKP is preferable for imparting strength. Vinylon fiber and PVA fiber are blended only when strength and strength are required. For PVA fiber, use a full melt type with a melting point of 60-70 ° C. The PVA fiber melts and bonds to vinylon fiber and other fibers, and the fiber sheet is reinforced by the binder effect of the PVA fiber and the strength of the vinylon fiber itself. The polyester binder fiber has a core-sheath structure in which the core is made of polyester and the outside is made of modified polyester. The melting point of the outer modified polyester is 110 ° C and 200 ° C. The former is melted in the papermaking process, and the latter is melted in the processing process. The polyester fiber and other fibers are bonded by melting the sheath of the polyester binder fiber.

Regarding the fineness, micro glass fiber is less than 1 μm, polyester fiber is 5-15 μΐη (0.5-2 denier), polyester binder fiber is 15-20 m (2-4 denier), vinylon fiber and PVA fiber are 10 to 15 m (l to 2 denier). After melting the polyester binder fiber, only the leather remains, so the cross-sectional area is approximately halved and the fineness is 10 to 15 m (l to 2 denier). Polyester fiber and polyester binder after melting Mix different fiber fineness so that the fineness of the fiber is in the range of 5 to 15 μm and is evenly spaced at 3 levels. By combining polyester fibers with different fineness in this way, the cavity of the filter material is complicated and dust is easily captured. The fiber length is preferably in the range of 3 to 7 mm from the papermaking property.

The binder type is an emulsion type, such as acrylic copolymer, ethylene vinyl acetate copolymer, ethylene salt-vinyl copolymer, etc. There are no particular limitations on the type of binder that has both softness and strength, and is preferably compatible with the adhesive used for bag making. It is necessary to select a binder having an appropriate glass transition point that changes the flexibility of the filter material depending on the glass transition point of the binder.

The filter material should be flexible, so the glass transition point is low and a binder is used. When the filter material is hardened, a glass transition point is high and a binder is used.

In order to increase the air permeability, it is preferable to finish it porous with a hot air dryer in order to maintain the fine force and microscopic voids of the micro glass fiber.

[0035] The paper waste of the filter material has a two-layer structure or a one-layer structural force. In the case of a two-layer structure, the dust layer (hereinafter abbreviated as DS) that contains air containing dust when used as a dust bag, and the clean layer (hereinafter abbreviated as CS) that is the exit side are used. Composed of layers. DS captures most of the dust, so it is necessary to open the eyes and increase air permeability, and the fiber is blended with relatively high fineness. Since CS captures very fine dust of 2 μm or less, it is necessary to close the eyes, and fine fibers such as micro glass fiber are mixed with fine fibers to create a void structure. Similarly, the conventional filter material has a two-layer structure, but the present invention is different from the conventional filter material in that the amount of the synthetic fiber and the microglass fiber is large. The ratio of the basis weight of DS and CS is not particularly limited, but the ratio may be determined so that the blending amount of the microglass fiber with respect to the entire sheet becomes an appropriate value. In other words, when the CS ratio is increased, the amount of micro glass fiber added to the entire sheet increases and leakage prevention efficiency increases. On the other hand, DS becomes smaller and clogs and air permeability decreases, so leakage prevention efficiency and air permeability are reduced. Decide the ratio so that it is balanced. The one-layer structure has both the DS and CS functions in one layer, increases the amount of microglass fibers, and increases the leakage prevention efficiency. Alternatively, it may be composed of two layers, and the paper composition may be made with the same fiber composition as each layer.

[0036] The filter material, which is a two-layer force, is composed of 50 to 60% by weight of vegetable fiber, 30 to 40% by weight of synthetic fiber, 10 to 15% by weight of synthetic binder fiber, 30 to 40% by weight of synthetic fiber, synthetic fiber fibers 30-50 weight ^_0/0, synthetic binder fibers 10-15 wt ^_0/0, the fiber sheet is first formed in two layers of CS consisting of microglass fibers 8-16% by weight. The ratio of the basis weight of the two layers is What is necessary is just to decide so that a lath fiber may become 4 to 7 weight% with respect to the basic weight of a filter material. If it is less than 4% by weight, the leakage prevention efficiency is deteriorated, and if it is more than 7% by weight, the air permeability is lowered. If the ratio of the basis weight of the two layers is in the range of 50 to 60% by weight for DS and 40 to 50% by weight for CS, the compounding power of micro glass fiber will be 7% by weight, and the leakage prevention efficiency will be appropriate. The size of is also large enough to reduce the pressure loss. If the DS plant fiber is less than 50% by weight, the strength is insufficient.

When the synthetic binder fiber of DS is less than 10% by weight, it is not preferable to bond polyester fiber or vinylon fiber. A synthetic binder fiber of 15% by weight or more is not preferable because the melted portion of the fiber closes the eyes, resulting in high pressure loss. With regard to CS, the range of blending amounts of plant fiber, synthetic fiber and synthetic noinda fiber was limited in the same way. Regarding the fineness, it is necessary to reduce the CS, so it is recommended to close the eyes mainly using polyester fibers with a fineness of 5 to 10 ^ πι (0.4 to 0.6 denier). Since the balance of strength, “leakage prevention efficiency” and air permeability is balanced by the ratio of the fiber composition of each layer, it is preferable to deviate from the above range.

For example, as a dust layer (DS), wood pulp 36%, polyester fiber (fineness 1.5 denier (= 11.5 m), fiber length 5mm) 20%, core-sheath polyester binder fiber (fineness 4 denier ( = 20 / ζ πι), fiber length 5mm, sheath melting point 110 ° C) 40%, PVA fiber (fineness 1 denier (= 10; ζ πι), fiber length 3mm, fully melted at 70 ° C) 4% As the clean layer (CS), 12% hemp TMP (Thermo-mechanical pulp), 50% wood pulp, polyester fiber (fineness 0.5 denier (= 7 m), fiber length 5 mm) 6%, polyester fiber ( Fineness 1.5 denier (= 11.5 m), fiber length 5 mm) 6%, core-sheath polyester binder fiber (fineness 2 denier (= 14 / ζ πι), fiber length 5 mm, sheath melting point 110 ° C) 18 %, PVA fiber (fineness 1 denier (= 10 m), fiber length 3 mm, fully melted at 70 ° C) 4%, micro glass fiber (fineness 0.6 / ζ πι, hereinafter abbreviated as M. G) 4 % And blended into a circular paper machine The two layers were made into paper with a basis weight ratio of 1: 1, dried with a Yankee dryer at 120 ° C, and wound up as a filter material with a basis weight of 50 gZm ² .

The compounding amount of micro glass fiber (M. G) was 2% with respect to the filter material. This Breathable packaging material was made from filter material.

[0038] As another example, 11% of hemp TMP (Thermo-Mecha-Cal Pulp) as dust layer (DS), 42% of wood norpe, polyester fiber (fineness 0.5 denier (= 7 m), fiber length 5 mm) 18%, polyester fiber (fineness 1.5 denier (= 11.5 m), fiber length 5 mm) 18%, core-sheath polyester binder fiber (fineness 2 denier (= 14 m), fiber length 5 mm, sheath melting point) 110 ° C) 11%, hemp TMP (Thermo-mechanical pulp) 9%, wood pulp 29%, polyester fiber (fineness 0.5 denier (= 7 m), fiber length 5 as clean layer (CS) mm) 42% core-sheath type polyester binder fiber (fineness 2 denier (= 14 m), fiber length 5 mm, sheath melting point 110 ° C) 11%, M. G 9% Paper was made with a basis weight ratio of 1: 1, dried with a Yankee dryer at 120 ° C, and wound up as a base paper with a basis weight of 44 g / m ² .

This base paper is sent to a paper machine and impregnated with ethylene acetate bur type emulsion binder (TG0 ° C) to make the amount of solids 13.6% of the base weight of the base paper and 130 to 160 ° C with a hot air dryer. And dried with a machine calender and wound up as a filter material.

The amount of micro glass fiber (M. G) was 4% of the filter material.

[0039] The force exemplified in the above configuration The packaging material used in the present invention is not limited to the above examples, and may be used in other combinations as long as the object of the present invention is achieved. it can. The thickness of the plastic film used in the structure of the present invention is not limited, but from the viewpoint of packaging suitability, handling strength, ease of perforation, etc., the thickness is preferably 5 to: LOO / zm, More preferably 10: LOO / zm. This does not apply to the case where non-woven fabrics, microporous membranes, etc. are laminated. In addition, various reinforcing materials may be appropriately combined for reinforcement.

[0040] The method for laminating and bonding is not particularly limited, and can be freely selected from dry lamination, extrusion lamination, thermal lamination, and the like. In addition, the above configuration is not limited to use as a forceful film. For example, a polyethylene film layer may be formed by extrusion lamination on a heat resistant film, or a laminated film may be manufactured at once by a coextrusion method. It is also possible to use it.

[0041] In the present invention, as a method of drilling non-penetrating micropores with at least a remaining film portion left in the packaging material, including mechanical pretreatment, mechanical drilling, laser beam drilling, electron irradiation Various drilling methods such as the drilling method, plasma drilling method, and high-pressure discharge drilling method can be applied, but the high-pressure discharge drilling method is preferable and effective.

[0042] As the high-pressure discharge perforation method, any of the spark gap method, the vacuum tube method, and the solid state method can be applied, but the solid state method is a preferable method. High-pressure discharge Punching is performed by passing the target packaging material while discharging by applying a high voltage between the discharge electrode and the dielectric roll. The perforation density and the perforation depth are appropriately adjusted according to the distance between the discharge electrode and the dielectric roll, the voltage, the shape of the discharge electrode, the characteristics of the dielectric roll, and the like. In this case, adjustment is also necessary depending on the thickness, material, and passing speed of the material to be drilled.

[0043] In order to drill the non-penetrating microporous material of the present invention, it is not sufficient to simply pass the target packaging material while discharging by applying a high voltage between the discharge electrode and the dielectric roll. Necessary. For one thing, it is also effective to carry out a pretreatment process that mechanically creates fine scratches with a filed roll or the like before discharge drilling. Alternatively, it is also effective to perform discharge perforation after acid treatment to form a polar group on the film surface. Furthermore, in order to provide a local discharge part in the dielectric hole, it can be made by dispersing the missing part in the coated dielectric layer or by forming a dielectric layer in which the conductive material is dispersed. It is effective for adjusting

[0044] The perforation density is not limited, but is preferably 50 to: LO, 000, 000 holes Zcm ² , more preferably 60 holes Zcm ² or more, more preferably 70 holes Zcm ² or more. More preferably, it is 80 holes Zcm ² or more, and more preferably 100 holes Zcm ² or more.

[0045] The pore diameter is not limited as long as the exothermic composition molded body does not leak, but is preferably 500 µm or less, more preferably 300 µm or less, and even more preferably 200 µm or less. More preferably, it is 100 m or less.

If the pore diameter is too large, part of the exothermic composition molded body may leak.

[0046] When perforating a laminated packaging material, it is necessary to perforate a complete through-hole in the film to be perforated. However, even if the hole reaches the laminated paper or nonwoven fabric, There is no problem as long as it does not hinder the function. If there are films to be perforated on both sides, it is possible to perforate one side or both sides simultaneously. [0047] In addition, the exothermic composition having an easy water value of less than 0.01 has a coagulant aid, coagulant, agglomerate aid, dry binder, A binder, a dry binder, an adhesive material, a thickener, an excipient, and a water-soluble polymer may be contained within a range of 0.01 to 3 parts by weight, respectively.

The agglomeration aid is an agglomeration aid described in Japanese Patent No. 3161605 (Japanese Patent Publication No. 11-508314), such as gelatin, natural gum, corn syrup and the like.

The aggregating agent is an aggregating agent described in JP-T-2002-514104, such as corn syrup, manoletino resyrup and the like.

The agglomeration aid is an agglomeration aid described in JP-T-2001-507593, such as corn syrup.

The dry binder is a dry binder described in JP-T-2002-514104, and is microcrystalline cellulose, maltodextrin, or a mixture thereof. The dry binder is a dry binder described in JP-T-2001-507593 and includes maltodextrin, sprayed lactose, and the like.

The dry binder is a dry binder described in JP-A-11-508314, and is microcrystalline cellulose, maltodextrin, or the like, or a mixture thereof.

The adhesive material or binder is an adhesive material or binder described in JP-A-4-293989, such as water glass, polyvinyl alcohol (PVA), and carboxymethyl cellulose (CMC).

The thickener is a thickener described in JP-A-6-343658, such as corn starch or potato starch.

The excipient is an excipient described in Japanese Patent Application Laid-Open No. 7-194641, such as pregelatinized starch and sodium alginate.

As the water-soluble polymer, a water-soluble polymer in the pressure-sensitive adhesive layer can be used.

[0048] The present invention provides an exothermic composition molded body obtained by molding an exothermic composition having iron powder, a reaction accelerator, and water as essential components and having a mobile water value of 0.01 to 10, and a base material and a coating material. And has a ventilation surface in part of the base material and the ridge or the covering material, the air permeability of the ventilation surface is 9 sec Z3 OOcc or less, and is fixed to the base material and Z or the covering material It is a hot water heater provided with means In addition, when the warming device of the present invention is used, the outer bag force is also taken out, the pedestal is adhered to the human body, and the heat generated by the acid-oxidation reaction of iron powder is locally applied to the human body through the pedestal. For example, it can be used for heating the abdomen, waist, shoulders, and the like.

Further, it is preferable that the ventilation surface is covered with a breathable heat insulating material so that heat generation and leakage of the exothermic molded body can be prevented.

In the present invention, where the exothermic composition molded body may be produced by compressing the exothermic composition molded body in the mold, the exothermic yarn / composite molded body is included in the exothermic yarn / composite molded body.

In addition, the size of the exothermic composition molded body, the exothermic part, and the warming device may be appropriately determined according to the use without limitation.

[0049] The exothermic composition molded body may have any shape! /, But is a planar shape, and examples thereof include a circle, an ellipse, a polygon, a star, and a flower. In the three-dimensional shape, polygonal pyramid shape, conical shape, frustum shape, spherical shape, parallelepiped shape, cylindrical shape, semi-cylindrical shape, semi-elliptical cylinder shape, bowl shape, cylindrical shape, elliptic cylinder shape Etc. are examples. In addition, these shapes may be provided with rounded corners, and the corners may be curved or curved, or may have a recess in the center or the like.

The maximum width of the shape is about 0.15 cm force to about 20 cm, preferably about 0.3 cm force to about 10 cm, more preferably about 0.5 cm to about 5 cm, more preferably about lcm to about 3 cm. Can do. Also, the maximum height is about 0.08 cm force about lcm, preferably about 0.15 cm to about 0.8 cm, more preferably ί to about 0.2 cm force, about 0.6 cm, more preferably about ί to about 0.8 cm. 2cm force can be about 0.5cm. The longest length can also be about 1.5 cm force, also about 20 cm, preferably about 1 cm to about 15 cm, more preferably about 1 cm to about 10 cm, and most preferably about 3 cm to about 5 cm.

[0050] In addition, the shape of the warmer can be the same shape as the exothermic yarn and the composition without any limitation. The corners may be rounded with a rounded corner.

A preferred example of the shape of the warming apparatus is a flat circular bag shape, preferably about 5 cm or less in diameter, more preferably 1 to 5 cm, and further preferably 2 to 4 cm.

[0051] The pedestal serves as an attachment portion to the human body. For example, a double-sided adhesive tape having a core as a foam is used. It is convenient to use a loop.

One side is affixed to a warming device, and a separator is affixed to the other side. The size of the pedestal and the size of the hole that can be provided with a hole in the center of the pedestal are not particularly limited, but the heat transfer surface that directly acts on the human body by setting the size of the hole. The product is determined. However, a hole is not always necessary if only the heat generated in the heat generating part is transferred to the human body.

[0052] The hot water heater of the present invention is stored in an airtight bag, taken out at the time of use, and the mixture is supplied with air through the sheet surface and starts to generate heat of oxidation. On the other hand, when the separator is removed from the pedestal and its adhesive surface is attached to the affected part or acupuncture point of the human body, the heat generated by the iron powder oxidation is transmitted to the human body through the hole. The mechanism of electric heating when a hole is made in the center of the pedestal is as follows. That is, the heat generated in the mixture is, of course, the force that dissipates from the entire surface of the heat generating part. Since both sides of the hole are blocked by the heat generating part and the human skin, water vapor is trapped inside the hole. Become. Therefore, it functions as a heat storage chamber in this hole, and heat is efficiently transferred to the human body through water vapor. Water from sweat from the human body is also stored in the hole. In fact, the part surrounded by the hole is kept at a much higher temperature than the surface part of the open heat generating part, and heat transfer to the human body is concentrated only through this hole part.

When a drug is contained in the mixture, it is stored in this pore and acts on the human body. When there is no hole in the pedestal, the heat generated in the heat generating part is accumulated in the pedestal, and this heat is concentrated in the central part and supplied to the human body. In addition, it is possible to know the heat generation state of the mixture by attaching a temperature indicating paint to a part of the surface of the warmer.

The same applies to the case where an adhesive layer is provided in place of the pedestal and the case where a hole is provided in the central portion of the adhesive layer.

[0053] The maximum temperature of the moxa instrument, without limitation, preferably 40 ° C or higher, more preferably 40 to 65 ^o C, an additional [This preferably ί or 40 to 60 ^o C, further [this is preferably ί or 40~50 ^o C, more preferably from 40~45 ° C, and more preferably from 41~43 ° C.

The exothermic time of 40 ° C or higher is not limited, but is preferably 1 minute to 5 hours, more preferably 5 minutes to 5 hours, further preferably 5 minutes to 4 hours, and more preferably Ten Minutes to 2 hours, more preferably 10 minutes to 1 hour, and further preferably 10 to 20 minutes.

[0054] As one embodiment of the hot water heater of the present invention, there is one which is generally non-porous, has a 1.5 cm round shape and a thickness of 0.5 to 0.7 mm.

The intermediate layer of the pedestal is formed of paper such as cardboard, nonwoven fabric, synthetic resin sheet, or the like. In particular, it is preferable to use a far-infrared radiation substance, moxa or the like mixed in paper, foam, nonwoven fabric, woven fabric, knitted fabric or adhesive layer constituting the intermediate layer. The pressure-sensitive adhesive layer is formed of a wrinkle-type adhesive that is less irritating to human skin, such as used for medical bandages.

As the far-infrared radioactive material, far-infrared ceramic fine powder, silicon oxide, iron oxide, or the like can be used. Add the far-infrared radiation material to the middle layer by impregnating the intermediate layer with a liquid material in which the far-infrared radiation material is dispersed in water or other liquid, or kneading the far-infrared radiation material into the synthetic resin. be able to.

[0055] Preferably, the production method preferably reduces the water of the molded exothermic composition molded body to produce an exothermic composition molded body with good exothermic rise. As an example, the heating device of the present invention has a heat generating composition molded body laminated on a base material, self-heats in the air, and is heated to 40 ° C. or higher and covered with a coating material to form a heat generating composition. Heat seal the periphery of the body to create a heater.

Immediately after creation, the warming device is stored in an outer bag which is a non-breathable storage bag.

Excess water in the exothermic composition molded body is reduced by raising the temperature after molding, so that the water content becomes an appropriate amount as a heating device. The method of increasing the temperature to reduce the moisture is not limited to self-heating, and may be performed in a dry nitrogen atmosphere or further by applying a temperature or in an air atmosphere. Whether or not self-heating occurs is not a requirement.

Further, the temperature is not an essential requirement, and the atmospheric temperature is not limited as long as the water content decreases. Preferably, the temperature is 20 to 300 ° C, more preferably 20 to 200 ° C, and more preferably 20 to: L00 ^o C, more preferably 20 to 80 ^o C, more preferably 40 to 60 ^o C. The ambient temperature may be determined in combination with the processing time.

[0056] The exothermic composition molded body of the present invention has iron powder, a reaction accelerator, water as essential components, and has surplus water with a mobile water value of 0.01 to 10, and molding with surplus water as a connecting substance. Heat generation group Moldability in which moisture in the composition does not function as a barrier layer and causes an exothermic reaction when in contact with air The exothermic composition is filled into a mold cavity and molded to approximately the same height as the mold cavity.

In the present invention, when the exothermic reaction is caused by contact with air without functioning as a noria layer, the moisture in the exothermic composition does not function as the noria layer as the air blocking layer, and the exothermic composition. Immediately after production, contact with air to cause an exothermic reaction immediately.

[0058] The exothermic composition molded body is obtained by further compressing the exothermic composition filled in the mold cavity to a thickness of 50 to 99.5% of the thickness of the mold cavity. It has shape retention and generates heat when in contact with air.

By adjusting the thickness of the exothermic composition molded product based on the height or depth of the mold cavity, the degree of compression can be easily adjusted, and the exothermic properties such as exothermic start-up property, exothermic sustainability, and proper exothermic heat retention can be achieved. Maintains shape retention without sacrificing.

[0059] Further, the exothermic composition includes a water retention agent, a water-absorbing polymer, a pH adjuster, and a hydrogen generation inhibitor.

, Aggregates, fibrous materials, functional materials, surfactants, organosilicon compounds, pyroelectric materials, moisturizers, fertilizer components, hydrophobic polymer compounds, heat generation aids, metals other than iron, other than iron oxide It may contain at least one selected from the additional components consisting of metal oxides, acidic substances or mixtures thereof.

[0060] In addition, the exothermic composition may add a binder, alcohol, cross-linking agent, or plasticizer within the range of! / ヽ without affecting the exothermic characteristics.

The ratio of the binder or the like is preferably 0.001 to 0.25 parts by weight with respect to 100 parts by weight of iron powder.

Examples of the binder of the present invention include an agglomeration aid, an aggregating agent, an agglomeration aid, a dry binder, a dry binder, a dry binder, an adhesive binder, a thickener, and a shaping agent.

[0061] In addition, the mobile water required in the present invention 0.01-: LO excess water was unexpected, ie, the powder surface covered with excess water, functioned as a barrier, and exothermic reaction In some cases, it was considered that a predetermined amount of water had to be removed from the exothermic yarn and the composition.

However, mobile water from 0.01 to: LO surplus water is an appropriate amount of surplus water, so it combines carbon and iron. The exothermic composition is given a function of causing an exothermic reaction immediately upon contact with air and a function of reaching a high temperature in a short time. It was.

[0062] The present invention reduces the carbon dust by using the surplus water having a mobile water value of 0.01-: LO, solves various manufacturing problems, and increases the accuracy of the production line speed and the filling weight. , Improve the fluidity of the heat generating composition, remove the non-uniformity of the heat generating composition in the finished heat generating part, improve the performance of the finished heat generating part, and eliminate the need for special equipment and environment All this significantly reduces the required labor, health, safety hazards and overall manufacturing costs.

[0063] The base material and the coating material are not limited as long as the heat generation characteristics are maintained. For example, as the material for forming the base material and the coating material, films such as polyethylene, polypropylene, polyethylene terephthalate, and nylon are used. Or, a non-woven fabric made of these strengths, a non-woven fabric made of a composite fiber or a combination of two or more of these, and a non-woven fabric, and a breathable laminated sheet made of an adjustment sheet for adjusting the heat generation temperature and heat generation time. Can be mentioned. Moreover, the nonwoven fabric of the surface which touches skin has a preferable fluffed nonwoven fabric.

In addition, when these have air permeability, they are packaging materials that can supply the oxygen gas necessary to give the desired exothermic characteristics and prevent the exothermic composition (molded body) from being scattered, and the duration of the exotherm. From the standpoint of easy adjustment of the maximum temperature and the like, there is no limitation on the air permeability as long as heat can be maintained.

For example, there are paper, non-woven fabric, synthetic paper, perforated plastic film, effective metal stays, or those obtained by appropriately coating these packaging materials, and laminates thereof.

[0064] The air permeability of the vent surface and the breathable material of the present invention is determined by the Gurley gas permeability (JIS P811

7) and Frazier permeability (JIS L1096). Examples of the breathable material include a breathable heat insulating material and a breathable packaging material.

[0065] The breathable heat insulating material is not limited! /, But breathable foams and nonwoven fabrics that are breathable, have heat retention properties, and heat generation compositions that can prevent leakage of molded articles and the like are preferred. Examples thereof include woven and knitted fabrics and molded films.

Material composition of breathable insulation material is cotton, polyester, polyethylene, polypropylene

Examples thereof include nylon. [0066] Examples of the breathable packaging material include a breathable heat insulating material alone or a laminate of the breathable heat insulating material and a breathable film.

For example, as an example of using a perforated film, a laminate sheet with a synthetic resin sheet having a large number of small holes is given as an example.

A large number of small holes are a plurality of small holes, and there is no limitation as long as the exothermic composition molded body can generate heat as a soot. The provided hole etc. are mentioned as an example.

[0067] Examples of the woven fabric include nets of fibers of cotton, polyethylene terephthalate, rayon, and the like.

[0068] As the non-woven fabric, it is possible to use a material in which fibers such as Japanese paper, rayon, acetate, nylon, polyester, polyethylene, polyethylene terephthalate, polypropylene, and the like are adhered or pressure-bonded. Further, as the nonwoven fabric, in addition to these, a polyethylene terephthalate fiber or a polymerized resin obtained by mixing a vinyl chloride copolymer and a vinyl acetate copolymer with this fiber and then melted by heating and bonding may also be used. A fiber structure having a laminated structure in which the fiber surface is coated with polyethylene can also be used.

[0069] In addition to these, those having good adhesion to woven or non-woven fabrics, for example, laminated with polyethylene or perforated polyethylene can be used sufficiently. Moreover, even if one side of the packaging material is non-gas permeable with polyethylene laminated to aluminum foil as described above, the other side should be a film, woven fabric or nonwoven fabric whose gas permeability satisfies the above conditions. It is fully usable.

[0070] Examples of the nonwoven fabric include a card nonwoven fabric, a spunbond nonwoven fabric, an air-twisted nonwoven fabric, a heat-bonded nonwoven fabric, a water-twisted nonwoven fabric, a melt-swelled nonwoven fabric, and an air-penetrating bonded nonwoven fabric.

The material composition of the nonwoven fabric is cotton, polyester, polyethylene, polypropylene, nylon or the like.

A particularly suitable material for the nonwoven fabric for ventilation insulation is a carded, heat-bonded woven fabric of hydrophobic polypropylene.

[0071] Examples of the breathable foam include urethane, styrene, polyethylene, and polypropylene. Examples thereof include those made of plastics such as olefin, acrylic, vinyl chloride, and silicone. It may be a breathable foam that is a powerful blend such as a blend of two or more plastics, or a composite of different plastics or layers with different foaming conditions. Also, the breathable foam may be reinforced with a coat layer that maintains breathability on the outer periphery.

The air permeability is a Gurley gas permeability, preferably 9 sec Z300 cc or less. The form of the air-permeable foam is arbitrary, and can be appropriately determined according to the gap for sealing purposes. In general, a sheet form or a bar or column form is used.

[0072] Examples of the material for the pedestal include, but are not limited to, the foam, the nonwoven fabric, the woven fabric, and the knitted fabric. The foam may be a closed cell foam. The shape of the pedestal is not limited, but the same shape as the shape of the heater and the heating part can be used, and the shape does not necessarily have to be the same as or similar to the shape of the heater.

[0073] Further, a magnetic body or a solid material for pressing may be provided at the center or end of the pedestal.

Examples of the structure of the pedestal include structures such as an adhesive layer, a Z foam, a Z adhesive layer, a Z separator, an adhesive layer, a Z nonwoven fabric, a Z adhesive layer, and a Z separator.

[0074] The pressure-sensitive adhesive layer may be airtight or air permeable, but is preferably air permeable. As for the air permeability, there is a part where the pressure-sensitive adhesive is partially present and no pressure-sensitive adhesive is present, and it is sufficient that the air-permeability is as a whole. Further, it may be hydrophilic or non-hydrophilic. These can be appropriately selected according to the application.

[0075] In laminating the pressure-sensitive adhesive as it is on the air-permeable base material and Z or coating material, as a method for maintaining the air-permeability, for example, the pressure-sensitive adhesive is adhered by printing or transferring. The adhesive layer is partially laminated, and the non-laminated part is used as a ventilation part, and the adhesive is moved in one direction while drawing a circle in the shape of a thread, or moved in a two-dimensional direction as appropriate. There is a method of operating and maintaining the space of the filamentous adhesive to maintain air permeability or moisture permeability, or foaming the adhesive, that is, a layer formed by a melt blow method.

[0076] The exothermic composition contains iron powder, a reaction accelerator and water as essential components, and has a mobile water value of 0.01 to LO, has moldability with excess water, and has an exothermic composition. If the exothermic composition does not function as a barrier layer and causes an exothermic reaction when in contact with air, there are no restrictions. Absent.

[0077] Further, if desired, the exothermic composition may include a carbon component, a water retention agent, a water-absorbing polymer, a hydrogen generation inhibitor, a pH adjuster, a surfactant, an organic silicon compound, a hydrophobic polymer compound, a pyroelectric compound, At least one selected from the group of substances, antioxidants, aggregates, fibrous materials, moisturizers, functional substances, fertilizer components, fever aids, acidic substances or mixtures thereof. It may contain.

[0078] Further, the mixing ratio of the exothermic composition of the present invention is not particularly limited. However, 1.0 to 50 parts by weight of the carbon component and 0. 01 ~: LO part by weight, water-absorbing polymer 0.01 to 20 parts by weight, pH adjuster 0.01 to 5 parts by weight, hydrogen generation inhibitor 0.01 to 12 parts by weight, reaction accelerator 1.0 to 50 parts by weight It is preferable that the blending ratio is selected so that the water content is 1.0 to 60 parts by weight and the mobile water value is 0.01 to 10 as the exothermic composition.

Furthermore, you may add the following to the said exothermic composition with the following mixture ratio with respect to iron powder.

That is, 1.0 to 50 parts by weight of a metal other than iron, 1.0 to 50 parts by weight of a metal oxide other than iron or iron, 0.01 to 5 parts by weight of a surfactant, 0.01 to an antifoaming agent ~ 5 parts by weight, hydrophobic polymer compound, aggregate, fibrous pyroelectric material, far-infrared emitting material, negative ion generating material, organic ketone compound 0.01 to 10 parts by weight, humectant, active substance, respectively Fertilizer component and exothermic aid are 0.01 to 10 parts by weight and 0.01 to 1 part by weight of acidic substances, respectively.

When blending a magnetic material, the blending ratio may be appropriately determined as desired.

[0079] Further, from the viewpoint of improving the heat generation startability of the heat generating composition, the following are preferable.

1) Heating composition essential components or those with addition of acidic substances and other necessary components, contact treatment with acidic gas (self-heating, etc.), water-adjusted components or other components And mixed to obtain a heat generating composition.

2) Use active iron powder having an oxygen-containing film such as oxides on at least part of the surface of the iron powder as iron powder.

(a) Oxygen with a thickness of 3 nm or more obtained by Auger electron spectroscopy on the surface of the iron powder Iron powder with a coating film.

(b) An iron powder having a wustite content of 2 to 50% by weight in terms of an X-ray peak intensity ratio with iron.

3) A mixture of active iron powder having an oxygen-containing film such as oxides on at least part of the surface of the iron powder mixed with iron powder not having an oxygen-containing film is used as the iron powder.

[0080] When measuring the mobile water value of the exothermic composition in the heater, the thickness of the iron oxide film of the iron powder in the mixture and the exothermic composition in the heater, and the amount of wustite, The mixture should be measured according to each item. That is,

1) Easy water level

Heating device power The exothermic composition is taken out and measured according to the method for measuring the mobile water value.

2) Iron powder thickness of iron oxide film, amount of wustite

In a nitrogen atmosphere, a heat-generating composition, a heat-generating composition molded body, a heat-generating composition compressed body or a mixture is dispersed in ion-exchanged water substituted with nitrogen, iron powder is separated with a magnet, and dried under a nitrogen atmosphere. Use a sample for measurement.

[0081] The iron powder is preferably normal iron powder, iron alloy powder, or active iron powder made of iron powder or iron alloy powder having an oxygen-containing film on at least a part of the surface of the iron powder.

[0082] Here, the mobile water value of 0.01 to 10 of the present invention has excess water. Therefore, when pressure is applied, the particles easily come into contact with each other and the surface of the water The particles are fixed by the tension. In addition, since the heat-generating yarn and molded article of the present invention maintains the thickness at the time of molding, that is, the thickness of 50 to 99.5% of the mold thickness, after compression that the moisture necessary for heat generation is not lost during compression, Sufficient exothermic duration can be secured without adding water or a reaction accelerator solution.

[0083] The compression is preferably 50 to 99.5% of the mold thickness, more preferably 50 to 99%, still more preferably 50 to 95%, still more preferably 60 to 95%. Yes, more preferably 70-90%.

[0084] The exothermic composition molded body of the present invention is a molded body that does not have flexibility, but generates heat after being compressed by contacting with air without adding an aqueous solution containing water or a metal salt to the compressed body. It has excellent heat generation characteristics and shape retention that prevents contamination of the environment due to carbon components, etc., sufficiently withstands the processing of hot water heaters, with a single hot water heater or multiple rooms at intervals. Various types of hot-water heaters can be manufactured up to the hot-water heater having a heating part provided. In other words, exothermic composition moldings of various sizes consisting of various shapes consisting of curves, straight lines, etc., from small to large, extremely thin and thick, and narrow and wide, can be produced. A heat generating part and a warmer of the size can be obtained.

[0085] The method of manufacturing the warming device of the present invention is not limited, but a method of manufacturing a warming device having a desired shape by a molding method is preferably employed.

The molding method is a method of forming a moldable exothermic composition into a desired shape by a mold-through molding method using a punching die or a pinching molding method using a punching die, and has no storage pocket. In this method, the molded body is laminated on a flat base material and the like, and another base material is covered and sealed to manufacture a heating device.

Here, the die-through molding method uses a punching die, and a molding machine for laminating a heat-generating composition molded body of a punching shape on a long base material and covering it with a long covering material. Using a rotary sealer that can seal the target section and the periphery of the base material and coating material (heat seal, pressure seal, thermocompression seal, etc.) This is a continuous forming method that heat seals and encloses the necessary parts of the peripheral part and the section of the molded product. In addition, the squeeze molding method is a molding method in which the exothermic composition molded body is laminated on a long base material by filling a squeeze mold having a recess and transferring it to the base material. In the case of a continuous type, a molding machine for laminating a heat generating composition compact on a long base material and covering it with a long covering material by filling the concave portion with a drum-shaped rotating body and transferring it to the base material. Using a rotary sealer that can seal the target section and the periphery of the base material and coating material (heat seal, pressure seal, thermocompression seal, etc.) For example, a continuous forming method in which the necessary portions of the edge and section of the molded product are heat sealed and sealed.

[0086] Further, in the method for producing the exothermic composition molded body of the present invention, the mold cavity is filled with the moldable exothermic composition, pressure is applied to the moldable exothermic composition in the mold cavity, and the mold cavity height is increased. This is a compression method of 50 to 99.5%. The pressure during the pressurization is not particularly limited as long as the moldable exothermic composition can be compressed to a predetermined thickness. Further, the compression jig used for compression molding is not limited, but examples thereof include elastic flat plates and rolls, and elastic or non-repulsive flat plates and rolls having a pushing portion that can be inserted into a mold cavity. . [0087] Further, in the case where the hot water heater of the present invention uses a plastic film packaging material provided with ventilation holes by perforation, the packaging material is previously perforated and made of plastic film provided with ventilation holes by perforation. The exothermic composition molded body laminated on the base material is covered with the enveloping material, and after the peripheral edge of the exothermic composition molded body is sealed, the packaging material is perforated. Vents may be provided

[0088] A packaging material is formed in the case of a warmer in which a non-breathable plastic film is adhered and pasted in a state where it can be peeled so as to cover a vent hole on a ventilation surface such as a porous film or a perforated film. Examples of plastic films to be treated include, for example, various types of films such as OPP, CPP, polyethylene, nylon, and polyester that may be moisture-proofed with polyvinylidene chloride, aluminum foil or aluminum-deposited plastic film, metal Examples thereof include, but are not limited to, plastic films on which semiconductor oxides, metal nitrides, and Z or oxygen nitrides are deposited. Usually, 10 ~: One or more of the above-mentioned films having a thickness of LOO / zm are used as heavy waste, and the inner layer is made of polyethylene or EVA to give heat sealability. It is common to use a heat seal layer that is laminated. Polyethylene includes polyethylene produced using a metacene catalyst. In particular, low density polyethylene and polyethylene produced using a metamouth catalyst are preferred.

[0089] Note that the base material and the covering material do not necessarily have to be made of the same film as described above, and may be made of another kind of film.

[0090] When the air permeability of the packaging material is obtained by perforating a plastic film, the air permeability can be adjusted relatively easily by adjusting the size of the needle hole. Since the surface is smooth, a plastic film can be stuck tightly to cover the ventilation holes. On the other hand, if the packaging material is made of brushed non-woven fabric, the surface is uneven and a gap is formed between it and the gas-nozzle film to be bonded to the non-woven fabric. This is not preferable because it causes fluffing.

[0091] As a method for opening the vent hole, a method of providing the entire surface, a method of intensively drilling in the central portion of the base material and / or the covering material, and a method of providing an endless shape in the form of a central belt of the base material and / or the covering material Any of these are applicable.

[0092] The material of the plastic film that is tightly bonded so as to cover the vent hole is not particularly limited as long as it is non-breathable, and may be appropriately selected from the materials of the packaging material described above. This film is adhered and adhered to the base material and Z or the covering material in a peelable state by means such as an adhesive, but it is preferable to provide a knob portion so that it can be easily peeled off during use.

[0093] Furthermore, the following manufacturing method can also be employed.

1) Filling method

A bag body is formed by combining the edges and partitioning portions of the base material by an appropriate method such as an adhesive, sewing, heat sealing method, etc., and the bag body is filled with the exothermic composition, and then the bag body end is contacted. There is a way to wear. As an example, as a method of manufacturing a compartmentalized warming device by a filling method, for example, a long-sized base material and a rotary thermocompression bonder that can heat seal the target partition portion and the peripheral edge of the base material are used. Use a heat-generating aeration heater in the compartment consisting of the gaps between the formed base materials while heat-sealing the necessary parts of the edges and partitioning portions of the long base material that are opposed to each other through the thermocompression bonding device. For example, a continuous forming method in which formation of the next compartment is started while supplying and sealing is performed, and the warming ends are adhered by the sealing process.

2) Pocket system

As disclosed in Japanese Patent Publication No. 11 508786, a pocket is previously formed in a base material by thermoforming, mechanical embossing, vacuum embossing or other acceptable means, and a heating composition and This is a method of filling a molded body and the like, covering the pocket with another base material, and bonding the periphery of the two base materials to manufacture a hot water heater.

[0094] A magnet may be used in the method of manufacturing the warming apparatus! When a magnet is used, the exothermic composition can be easily housed in a bag or mold, and the molded body can be easily detached from the mold, so that the exothermic composition molded body can be easily molded or a warmer can be manufactured.

[0095] The thus obtained heating device uses a storage bag in which an inner bag and an outer bag are integrated, which is advantageous in terms of cost and manufacturing, and also has a conventional double packaging structure during storage. Compared to, the exothermic composition molded body has the merit that it is less susceptible to changes with time. In addition, the temperature performance and feeling of use are satisfactory, and there is no risk of leakage of the contents, so that a comfortable warm can be obtained. Next, examples will be shown to describe the present invention in more detail, but the present invention is not limited to these examples.

Brief Description of Drawings

[0097] [FIG. 1] A plan view of an embodiment of the warming device of the present invention.

[Figure 2] Cross section of Z-Z

FIG. 3 is a cross-sectional view of another embodiment of the hot water heater of the present invention.

FIG. 4 is a plan view of another embodiment of the hot water heater of the present invention.

FIG. 5 is a plan view of another embodiment of the hot water heater of the present invention.

FIG. 6 is a cross-sectional view of another embodiment of the hot water heater of the present invention.

FIG. 7 is a plan view of a modification of the shape of the hot water heater of the present invention.

[Fig. 8] Plan view of filter paper for measuring mobile water value of the present invention

FIG. 9 is a perspective view for explaining the measurement of the mobile water value of the present invention.

FIG. 10 is a sectional view for explaining the measurement of the mobile water value of the present invention.

FIG. 11 is a sectional view for explaining the measurement of the mobile water value of the present invention.

FIG. 12 is a plan view of the filter paper after the measurement of mobile water value according to the present invention.

Explanation of symbols

1 Hot water heater

2 Exothermic composition molded body

3 Heating part

4 Scenery section

5 Base material

6 Coating material

7 Adhesive layer

8 Separator

9 Non-breathable film

10 Adhesive layer

11 Knob

12 space 13 Mount

13A core material

14 Ventilation holes

15 Push plate

16 flat plate

17 Non-water absorbent film (polyethylene film, etc.)

18 Filter paper with 8 lines drawn at 45 degree intervals radially from the center point

19 Template with hollow cylindrical hole

20 holes

21 samples

22 Stainless steel plate

23 Distance to tip of water or solution

24 Equivalent position of hollow cylindrical hole on filter paper

Example

(Example 1)

Figures 1 and 2 show a hot water heater 1 having a circular planar shape.

As shown in the figure, the warming device 1 of the present invention accommodates a exothermic composition molded body 2 obtained by molding a exothermic composition between a base material 5 and a covering material 6, and has an adhesive on one side of its exposed surface. With layer 7. A separator 8 is attached to the pressure-sensitive adhesive layer 7. Its shape is a circle with a diameter of 3 cm and a seal 4 at the outer periphery of 3 mm.

As exothermic composition, reduced iron powder (particle size 300 m or less) 100 parts by weight, activated carbon (particle size 300 / zm or less) 7.0 parts by weight, wood powder (particle size 300 m or less) 5.0 parts by weight, water-absorbing polymer ( (Granularity 300 m or less) 0.8 parts by weight, 0.2 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11 A 1% saline solution was used. This exothermic composition was made into a exothermic composition molded body 2 having a thickness of 3 mm by using a punching die having a circular shape with a planar shape having a thickness of 3 mm.

The substrate 5 is composed of a polyethylene film. The pressure-sensitive adhesive layer 7 is composed of an acrylic pressure-sensitive adhesive having a thickness of 30 μm. Cover material 6 is composed of a breathable material in which a nylon nonwoven fabric with a weight per unit area of 40 gZm ² is laminated on a 70 μm thick polyethylene film. Holes with a diameter of 0.25 mm are arranged in a matrix with a center distance of 0.6 mm. A plurality of holes were perforated and the air permeability was 0.5 _sec Z300c _C.

The warm water heater 1 was sealed and stored in an outer bag and left at room temperature for 24 hours.

After 24 hours, the outer bag force is also taken out of the warming instrument, attached to the affected part of the human body, acupuncture points, and the fever test is performed for 3 minutes, it becomes 40 ° C or higher, the maximum temperature is 60 ° C, and after 15 minutes, The temperature dropped to ° C, and it was effective enough as a soot.

(Example 2)

In this example, as shown in FIG. 3, a double-sided adhesive tape 7 having a foam as a base material is cut into a circle having a diameter of 2 cm, a hole for heat transfer of about 3 mm is provided at the center, and one surface of the tape is used as a heating device. Shells were occupied on 1, and separator 8 was attached on the other side.

As the exothermic composition, a batch type stirring tank composed of a mixer equipped with a fan-shaped rotor blade of an exhaust fan as an oxidizing gas treatment device was used as the oxidizing gas contact treatment device, and air was used as the oxidizing gas.

First, reduced iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less), 3.5 parts by weight, 11% saline 5 parts by weight The reaction mixture was placed in a contact processor vessel.

Next, in an environment of 20 ° C, the upper part of the container for the contact treatment device is opened, and is heated in contact with air and stirred, and when the maximum heat generation temperature reaches 25 ° C, (Particle size 300 m or less) 5 parts by weight, water-absorbing polymer (particle size 300 m or less) 1.2 parts by weight, slaked lime 0.2 parts by weight, sodium sulfite 0.7 parts by weight, 11% saline A heating composition with a value of 10 was obtained.

Next, using the punching die used in Example 1, the exothermic composition molded body 2 was molded, and a laminated body of a fluffed nonwoven fabric and a polyethylene film, polyethylene on the polyethylene side and an EVA cover of 5% by weight. Next, cover the base material 5 with the heat seal layer, and then cover the filter material for the vacuum cleaner dust bag with the covering material 7 in which urethane foam is laminated, and the peripheral part of the exothermic composition 2 Was sealed and cut to produce a circular heater 1 having a diameter of 3 cm and a seal width of 3 mm. The air permeability of the coating material is 12ccZcm ² Zs in terms of Frazier air permeability. I

The warmer was sealed and stored in an outer bag and left at room temperature for 24 hours.

After 24 hours, the outer bag force is also taken out of the warming instrument, attached to the affected part of the human body, acupuncture points, and the fever test is performed for 3 minutes, it becomes 40 ° C or higher, the maximum temperature is 60 ° C, and after 15 minutes, The temperature dropped to ° C, and it was effective as a soot.

[0101] (Example 3)

In this example, as the covering material 7, a 0.4 mm thick nylon sheet laminated with polyethylene is provided with a small hole with a diameter of 0.1 to 0.15 mm so that the air permeability is 1. OsecZ300cc. A layer in which a perforated layer was provided, and a polyester film having a thickness of 0.15 mm could be peeled thereon was used.

The exothermic composition of Example 2 was used, the exothermic composition molded body 2 was laminated on the base material 5 on which aluminum was deposited on a 0.05 mm thick polyethylene film, and the covering material 6 was covered. The peripheral edge of the exothermic composition molded body 2 was heat-sealed to form a warmer 1 having an average inner diameter of 2 cm, a depth of 6 mm, and an outer dimension of 3.5 cm. In addition, a double-sided adhesive tape was provided as an adhesive layer 7 in the warmer.

Next, a dry moth as a drug was attached to the surface of the covering material 6 so that the average diameter was 2 cm and the thickness was about 0.3 mm.

[0102] In addition to the above-described embodiment, as shown in FIG. 4, a warming apparatus 1 having a mount 13 attached thereto may be used. The mount 13 has a structure in which an adhesive layer 7, a core material 13 </ b> A that also has foam strength, an adhesive layer 7, and a separator 8 are laminated. In addition, as shown in FIG. 5, a circular hole 12 may be provided in the center of the mount 13 of the warmer 1.

Furthermore, as shown in FIG. 6, a structure in which a non-breathable plastic film 9 that can be peeled off to cover the ventilation hole 14 is attached to the ventilation surface of the covering material 4 of the warmer 1 via the adhesive layer 10. You can do that.

As shown in Fig. 7, the external shape of the warming device 1 is as follows: (a) Broad shape, (b) Eye mask shape, (c) Round shape, (d) Round shape, (e) Rounded rectangle, (f ) Rectangle, (g) rounded square, (h) square, (i) oval, (j) boomerang, (k) maggot, (1) star, (m) airfoil, (n) wing Shape, (o) nose shape, (p) flower shape, etc. can be selected arbitrarily.

Claims

The scope of the claims

[1] A exothermic composition molded body obtained by molding an exothermic composition having iron powder, a reaction accelerator and water as essential components and a mobile water value of 0.01 to 10 is interposed between a substrate and a coating material. The base material and the Z or the covering material have a ventilation surface, the air permeability of the ventilation surface is 9 sec Z300cc or less, and a fixing means is provided on the base material and the Z or the covering material. A hot-water appliance characterized by that.

[2] The heat generation composition contains a binder, and the ratio of the binder is 0.001 to 0.25 parts by weight with respect to 100 parts by weight of iron powder. The listed hot water heater.

[3] The exothermic composition includes a carbon component, a water retention agent, a water-absorbing polymer, a pH adjuster, a hydrogen generation inhibitor, an aggregate, a fibrous material, a functional material, a surfactant, an organic silicon compound, a pyrogenic compound. At least selected from electrical components, moisturizers, fertilizer components, hydrophobic polymer compounds, exothermic aids, metals other than iron, metal oxides other than iron oxide, acidic substances, or mixtures thereof The hot water heater according to claim 1, characterized in that both contain one kind.

[4] The heating composition according to claim 1, wherein the exothermic composition contains a component obtained by contact treatment with an oxidizing gas of a mixture containing at least iron powder, a carbon component, a reaction accelerator, and water as essential components. Hot water heater.

[5] At least a part of the surface of the iron powder is covered with an iron oxide film, the thickness of the iron oxide film is 3 nm or more, and at least the central region and the iron oxide film are formed. Lower region force The hot water heater according to claim 1, which contains 20 to L00% by weight of active iron powder having an iron component region not containing oxygen in at least one selected region.

[6] By heat-sealing the base material and the covering material, a plurality of the exothermic composition molded bodies are provided via a heat seal portion, and at least a part of the ventilation surface is a ventilation control material. The hot water heater according to claim 1, wherein the hot water heater is covered.

[7] At least a part of the vent surface is provided with a vent hole formed by perforation, and the vent hole is attached with a non-breathable plastic film so that it can be peeled off. The hot water heater according to claim 1.

[8] The warming device according to [7], wherein the vent holes are concentrated in a central portion of the base material or the covering material.