WO2006006645A1 - 発熱混合物の製造方法、発熱混合物、発熱組成物及び発熱体 - Google Patents
発熱混合物の製造方法、発熱混合物、発熱組成物及び発熱体 Download PDFInfo
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- WO2006006645A1 WO2006006645A1 PCT/JP2005/012998 JP2005012998W WO2006006645A1 WO 2006006645 A1 WO2006006645 A1 WO 2006006645A1 JP 2005012998 W JP2005012998 W JP 2005012998W WO 2006006645 A1 WO2006006645 A1 WO 2006006645A1
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- exothermic
- water
- exothermic composition
- shape
- mixture
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F7/03—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction
- A61F7/032—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction using oxygen from the air, e.g. pocket-stoves
- A61F7/034—Flameless
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/16—Materials undergoing chemical reactions when used
- C09K5/18—Non-reversible chemical reactions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
- F24V30/00—Apparatus or devices using heat produced by exothermal chemical reactions other than combustion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F2007/0098—Heating or cooling appliances for medical or therapeutic treatment of the human body ways of manufacturing heating or cooling devices for therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/02—Compresses or poultices for effecting heating or cooling
- A61F2007/0268—Compresses or poultices for effecting heating or cooling having a plurality of compartments being filled with a heat carrier
Definitions
- the present invention relates to an exothermic mixture having exothermic characteristics with excellent heat build-up properties and excellent moldability and compression resistance due to contact between an oxidizing gas and at least an essential component of the exothermic composition.
- the present invention relates to an industrially practical production method, exothermic mixture, exothermic composition, and exothermic body.
- iron powder is the most common metal powder used in these products, and salt, water, etc. are used as reaction aids, and water retention agents that carry these substances.
- active agents such as activated carbon, vermiculite, diatomaceous earth, wood flour, or water-absorbing polymers are used as a mixture.
- Patent Document 1 proposes an exothermic composition in which manganese dioxide, cupric oxide, and iron tetroxide are mixed with other exothermic composition components. These are used as catalysts and cannot be used as pyrogens. In addition, when they are added to the exothermic composition, there is no effect described that the contact between iron tetroxide, etc. and the iron powder surface is insufficient.
- the heating element is used for heating a human body or an object. In the low temperature range of about 30 to about 90 ° C used as a heat source, there is a problem that the exothermic duration decreases as the addition ratio increases. It was.
- Patent Document 2 proposes a heating element in which a heating composition mainly composed of an oxidation accelerator such as iron, water, and salt is stored in a breathable container after reaching 40 ° C. It took 25 minutes to reach the exothermic composition up to 40 ° C, and industrial mass production was difficult.
- an oxidation accelerator such as iron, water, and salt
- Patent Document 3 proposes a disposable body warmer made of a heat-generating composition having a shape maintaining property by adding a powdery thickening agent such as corn starch or potato starch.
- Patent Document 4 proposes a solid exothermic composition in which a powdery exothermic composition is mixed with a binder such as CMC and compression molded.
- Patent Document 5 proposes an ink-like or cream-like exothermic composition and exothermic body using a thickener and imparting viscosity, and a method for producing the same.
- ink-like or cream-like viscous exothermic compositions and adhesive cohesive exothermic compositions are thickeners such as glue, gum arabic and CMC, agglomeration aids and excipients such as pregelatinized starch,
- a binder the exothermic composition particles are bonded by these viscosified materials, so that the prevention of misalignment and the moldability are excellent, but the heat generation performance is remarkably deteriorated.
- a viscous exothermic composition that is made using a thickener or binder is also used to thicken the heat-generating composition particles using a thickener or binder. Although the moldability is excellent, the heat generation performance was extremely bad.
- the exothermic composition is viscous due to a binder, a thickener, an agglomeration aid, or an excipient, so that The reaction slowed down due to the inability to drain water and adverse effects on exothermic substances such as thickeners, making it difficult to rapidly increase the temperature to the required temperature or to warm for a long time.
- the powder or the granular exothermic composition has no excess water! Although these powdery or granular exothermic compositions have good exothermic characteristics, they are used as a heating element by filling an air-permeable storage bag, so the exothermic temperature distribution may not be constant due to deviation of the exothermic composition, etc. It was difficult to produce a heating element that had a poor feeling or was included in the shape of the body to be insulated, and it was powerful enough to exhibit its heat generation performance.
- Patent Document 1 JP-A-53-60885
- Patent Document 2 Japanese Patent Laid-Open No. 57-10673
- Patent Document 3 Japanese Patent Laid-Open No. 6-343658
- Patent Document 4 Japanese Patent Laid-Open No. 59-189183
- Patent Document 5 JP-A-9-75388
- An object of the present invention is to provide an inexpensive, industrially available product that undergoes an oxidation reaction immediately upon contact with air, generates heat, then starts a rapid reaction, and changes to a mild reaction at a certain temperature.
- the present invention provides a method for producing an active exothermic mixture, an exothermic mixture, an exothermic composition, a moldable exothermic composition, and an exothermic body that can be produced in large quantities.
- the method for producing an exothermic mixture of the present invention comprises, as described in claim 1, iron powder, a reaction accelerator and water as essential components, a water content of 0.5 to 20% by weight, and an excess water amount.
- the reaction mixture with a mobile water value of less than 0.01 is brought into contact with an oxidizing gas in an environment of 0 ° C or higher, and the temperature rise of the reaction mixture is increased to 1 ° C or higher within 10 minutes.
- the method for producing an exothermic mixture according to claim 2 is the method for producing an exothermic mixture according to claim 1, wherein the amount of the reaction accelerator is 2 with respect to 100 parts by weight of the total amount of the reaction accelerator and water. It is characterized by being 6 parts by weight.
- the method for producing an exothermic mixture according to claim 3 is the method for producing an exothermic mixture according to claim 1, wherein the reaction mixture is embedded in a breathable sheet-like material such as a nonwoven fabric. It is characterized in that a contact treatment with an inert gas is performed.
- the exothermic mixture of the present invention is manufactured by the manufacturing method described in claim 1.
- the exothermic composition of the present invention uses the exothermic mixture according to claim 4 as a raw material, adjusts the moisture, and contains iron powder, a carbon component, a reaction accelerator, and water as essential components.
- the mobile water value is 0.01-20.
- the exothermic composition according to claim 6 is the exothermic composition according to claim 5, wherein the exothermic composition is a water retention agent, a water-absorbing polymer, a pH adjuster, a hydrogen generation inhibitor, an aggregate, a fiber.
- the exothermic composition is a water retention agent, a water-absorbing polymer, a pH adjuster, a hydrogen generation inhibitor, an aggregate, a fiber.
- the heating element of the present invention is characterized in that the heating composition according to claim 5 is stored in a breathable storage bag to form a heating section.
- the heating element according to claim 8 is the heating element according to claim 7, characterized in that the stored heating composition is a heating composition molded body.
- the heating element according to claim 9 is the heating element according to claim 7, wherein the breathable storage bag includes a base material and a breathable coating material, and the heating composition is divided into a plurality of parts. A plurality of segmented heat generating portions are formed by sealing the peripheral edge of the heat generating composition.
- the heating element according to claim 10 is the heating element according to claim 8, wherein at least one shape selected from the exothermic composition molded body, the section heating part and the heating part is a planar shape.
- the shape is selected from the group consisting of an elliptic cylinder shape, a bowl shape, a cylinder shape, and an elliptic cylinder shape.
- the heating element according to claim 11 is the heating element according to claim 7, characterized in that a fixing means is provided on at least a part of the exposed surface of the heating element.
- the exothermic composition does not contain a coagulant aid, a coagulant, an agglomerate aid, a dry binder, a dry binder, a dry binder, an adhesive material, a thickener and an excipient. Good.
- the exothermic composition molded body is preferably compressed.
- the fixing means is a pressure-sensitive adhesive layer
- the pressure-sensitive adhesive layer includes a water retention agent, a water-absorbing polymer, a pH adjuster, a surfactant, an organic silicon compound, a hydrophobic polymer compound, Pyroelectric material, antioxidant, aggregate, carbon component, fibrous material, moisturizing agent, functional material, or a mixture thereof. It is preferable to contain at least one selected component force. .
- a heat generating composition with good exothermic startability can be obtained by the manufacturing method of contacting the oxidizing gas according to the present invention, and more than twice as fast as the conventional product not subjected to the oxidizing gas contacting treatment. Warm up.
- the exothermic composition of the present invention has good heat build-up, the amount of carbon components such as activated carbon can be reduced by 10-20% or more compared to conventional products that are not treated with acidic gas. Is advantageous.
- the heating element using the exothermic composition of the present invention also has a heat generation rising property that heats up immediately after being taken out from the outer bag when used, and has an excellent feeling of use with no irritation that does not warm easily.
- the heating element can be manufactured.
- a heat generating element having a sectioned heat generating part that is placed and fixed at a distance of two or more can be obtained with good moldability, and it fits well to the warmed part of the body etc.
- An exothermic body with excellent flexibility and excellent heat generation is obtained.
- the present invention uses an iron powder, a reaction accelerator and water as essential components, and uses a reaction mixture having a water content of 0.5 to 20% by weight and an easy water value indicating excess water of less than 0.01. It has established a production method that can be mass-produced by increasing the reaction rate during contact treatment with oxidizing gas and achieving the temperature rise of the reaction mixture to 1 ° C or more within 10 minutes. Above a specified temperature By shortening the time to reach the temperature, proper activation can be achieved and unnecessary oxidation on the iron powder can be prevented.
- exothermic compositions with easy-moving water values of 0.01 to 50 by adding carbon components, etc. to the exothermic mixture produced by contacting the reaction mixture with an oxidizing gas and adjusting the water content are appropriate. It has stickiness and excellent moldability, and through-molding method or swallowing method can be applied to produce heating elements of various shapes.
- exothermic compositions with a mobile water value of 0.01 to 20 start an exothermic reaction as soon as they come into contact with air, have excellent exothermic rise properties, and have excellent moldability. is there.
- the method of contact treatment of the reaction mixture with oxidizing gas is a reaction mixture containing iron powder, a reaction accelerator and water as essential components, a water content of 0.5 to 20% by weight and a mobile water value of less than 0.01.
- a reaction mixture containing iron powder, a reaction accelerator and water as essential components, a water content of 0.5 to 20% by weight and a mobile water value of less than 0.01.
- the temperature of the reaction mixture is increased to 1 ° C or higher by contact treatment with oxidizing gas! /, But as a specific example,
- a method for producing an exothermic mixture wherein the method described in any one of 1 to 5 is performed in an environment heated to 10 ° C or higher from the environmental temperature,
- a method for producing an exothermic composition in which the oxidizing gas contact treatment is performed until the maximum temperature, which is the highest temperature rise due to an exothermic reaction, is exceeded by the method described in any one of 1 to 8.
- An example is a method for producing an exothermic mixture in which the reaction mixture or exothermic mixture described in any one of 1 to 5 is heated to 1 ° C or higher in an oxidizing gas environment.
- exothermic mixture may be added to the exothermic mixture, and further treated with an oxidizing gas to form an exothermic mixture.
- the reaction mixture environment during the oxidizing gas contact treatment is not limited as long as it is in contact with oxidizing gas in an environment of o ° c or higher and the temperature rise of the reaction mixture is set to c within 10 minutes.
- it When performing in an open system, it may be present in a container without a lid, or it may be in a state in which an oxygen-containing gas such as air enters through a breathable sheet such as a nonwoven fabric.
- the acidic gas contact treatment may be either batch type or continuous type under stirring, non-stirring, flowing or non-flowing.
- the water content in the reaction mixture or the exothermic mixture before further oxidizing gas treatment is usually 0.5 to 20% by weight, preferably 1 to 15% by weight, more preferably 2 -10% by weight, more preferably 3-10% by weight, and even more preferably 6-10% by weight.
- the temperature of the reaction mixture after contact with the acid gas is not limited as long as the temperature rise is 1 ° C or more, but is preferably 1 to 80 ° C, more preferably 1 to It is 70 ° C, more preferably 1 to 60 ° C, and further preferably 1 to 40 ° C.
- the environmental temperature at the time of contact between the reaction mixture and the oxidizing gas is not limited as long as the temperature of the reaction mixture rises above a predetermined level, but is preferably 0 ° C or higher, more preferably 0 to 250 ° C. More preferably, the temperature is 10 to 200 ° C, more preferably 20 to 150 ° C, still more preferably 25 to 100 ° C, and further preferably 25 to 50 ° C.
- the temperature rise of the reaction mixture at the time of contact between the reaction mixture and the oxidizing gas is 1 ° C or more, but the time is within 10 minutes, preferably 1 second to 10 minutes, More preferably 1 second to 7 minutes, still more preferably 1 second to 5 minutes, still more preferably 2 seconds to 5 minutes, still more preferably 2 seconds to 3 minutes, still more preferably 2 seconds to 5 minutes. 1 minute.
- the temperature of the oxidizing gas is not limited as long as the environmental temperature is maintained.
- the mobile water value is a value indicating the amount of excess water that can move out of the exothermic composition in the water present in the exothermic composition. This easy water value will be explained with reference to Figs. As shown in Fig. 13, N O. 2 QIS P 3801 (type 2) filter paper 18 with eight lines written at 45 ° intervals radially from the center point is made of stainless steel as shown in Figs.
- 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.
- 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.
- the moisture content for measuring the true moisture value is calculated by calculating the moisture content of the exothermic composition from the moisture content measurement using an infrared moisture meter of the exothermic composition. Based on this, the amount of water necessary for the measurement is calculated, and the true water value is measured and calculated from the water amount by the mobile water value measurement method.
- the mobile water value (0 to: L00) in the present invention is preferably 0.01 to 20, more preferably 0.01 to 18, and more preferably 0.1 to 15. More preferably, it is 0.01 to 13, more preferably 1 to 13, and further preferably 3 to 13.
- An exothermic composition having an easy water value of less than 0.01 has insufficient moldability.
- An exothermic composition having an easy water value of 0.01 to 50 is a moldable exothermic composition because it has moldability.
- the mobile water value exceeds 20, it is necessary to remove some moisture from the exothermic composition by water absorption or dehydration. That is, a practical exothermic reaction will not occur unless a part of moisture in the exothermic composition molded body is removed by water absorption or dehydration using a water-absorbing packaging material.
- a water-absorbing polymer with a slow water absorption rate is used and shows a high water mobility value during molding.
- the excess water is taken into the water-absorbing polymer, and the water mobility value is 0.01 to 20 If it becomes the heat generation state of Even if the exothermic composition is used, the excess water becomes a barrier layer and is treated as an exothermic composition.
- An exothermic composition having a mobile water value of more than 50 has too much excess water, becomes a slurry, has no moldability, and the excess water becomes a barrier layer, and as it is, it contacts with air and does not cause an exothermic reaction.
- the mobile water value is a numerical value of excess water, which is the amount of water that can be easily and freely oozed out of the water in the exothermic composition and mixture.
- excess water is the amount of water that can be easily and freely oozed out of the water in the exothermic composition and mixture.
- the amount of surplus water varies depending on the amount of water-retaining agent, carbon component, water-absorbing polymer, etc., and the wettability of each component. It is very difficult to predict from the amount of water added. Therefore, since the amount of surplus water such as the exothermic composition or mixture is determined from the easy water value, if the amount of water to be added and the amount of other components are determined by this, the exothermic composition having an almost constant amount of surplus water or Mixtures can be obtained with good reproducibility.
- the exothermic composition or mixture blended according to the composition ratio has a mobile water value within a certain range, that is, a constant value. Since it has an excess amount of water within the range, it generates heat when it comes into contact with air, but it does not have formability, such as a powder-like heat generation composition, heat generation when it comes into contact with air, and has formability, water absorption, etc.
- formability such as a powder-like heat generation composition, heat generation when it comes into contact with air, and has formability, water absorption, etc.
- various exothermic compositions such as exothermic compositions that form heat after contact with air and generate heat after a certain amount of surplus water is discharged from the system can be easily produced.
- the mobile water value is known, it can be seen in which state the exothermic composition or the mixture is in the above state. If the mobile water value is used, the desired state can be reproducibly realized by simple measurement.
- the component ratio of the exothermic composition is determined based on the mobile water value and the component ratio obtained from the measurement, and actual production of the exothermic composition can be easily performed.
- water (or a reaction accelerator aqueous solution) is added to a mixture obtained by mixing water (or a reaction accelerator aqueous solution) with a specific amount of other exothermic composition components. Mix and produce multiple exothermic compositions with different moisture contents. Next, the mobile water value of each exothermic composition is measured, and the relationship between the amount of added water (or reaction accelerator aqueous solution) and the mobile water value is determined.
- the mobile water value of the exothermic composition that is formable and generates heat upon contact with air is 0.01 to 20. If the composition of each component is determined in this way, and a mixture is prepared with that composition, moisture does not function as a barrier layer and heat is generated by contact with air, and a heat-generating composition having moldability is produced with good reproducibility. Can build.
- 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.
- the exothermic composition molded body has a maximum width, preferably 1 to 50 mm, on a substantially planar substrate. More preferably, l-20mm, or maximum diameter, preferably l-50mm, more preferably 1-20mm (If there are two or more diameters such as ellipse, the major axis is treated as the length and the minor axis as the width) This makes it possible to manufacture ultra-thin and ultra-flexible heating elements that have multiple heat generating parts.
- the surplus water is water or an aqueous solution that easily moves out of the exothermic composition due to excess water in the exothermic composition, the moisture value sucked out by the filter paper from the exothermic composition, or the like. It is defined as the mobile water value, which is the aqueous solution fraction value.
- the hydrophilic groups in the components of the exothermic composition are hydrated by dipolar interactions or hydrogen bonds, and have a high structure around the hydrophobic groups. It is estimated that it exists.
- the moldability of the present invention means that a laminate of a heat generating composition in the shape of a punched hole or a concave mold can be obtained by die-through molding using a punching die having a punched hole or by squeeze molding using a concave mold. This indicates that the molded shape of the exothermic composition molded body is maintained after molding including mold release. If there is moldability, the heat-generating 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. It is possible to seal with no breakage of the seal because there is no scattered sesame seeds in the seal part. The presence of sesame causes poor sealing.
- 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 plate with a thickness of 70 ⁇ m x length 200mm x width 200mm is placed on the stainless steel plate. Place the stainless steel mold.
- the exothermic composition 50 g is placed near the scraping plate between the scraping plate and the punching hole to endlessly.
- the shaped belt is moved at 1.8 mZmin, and the exothermic composition is scraped off and filled into the punched hole of the mold.
- the endless belt stops running.
- the mold is removed and the exothermic composition molded body laminated on the polyethylene film is observed.
- the exothermic composition is moldable.
- the moldable exothermic composition contains iron powder, a reaction accelerator, and water as essential components, and includes a coagulant aid, a coagulant, an agglomerate aid, a dry binder, a dry binder, a dry binder, and an adhesive. Does not contain binders, thickeners and excipients, has surplus water with a mobile water value of 0.01-20, has moldability with surplus water as a connected material, and is in the exothermic composition It is an exothermic composition in which moisture does not function as a barrier layer and causes an exothermic reaction upon contact with air.
- exothermic composition molded body containing a exothermic composition in a mold was compressed in the mold.
- the exothermic composition compact with a thickness of 70% of the mold thickness is the heat build-up property of the exothermic composition compact before compression (temperature difference between 1 minute and 3 minutes after the start of the exothermic test of the exothermic composition) ) Of 80% or more of heat generation.
- Thickness with adhesive layer of about 80 ⁇ m thickness 25 ⁇ m X length 250 mm X width 200 mm
- Polyethylene film attached to the support plate through the adhesive layer so that the center of the polyethylene film is at the sensor wear.
- the exothermic temperature is measured using a data collector, measuring the temperature for 2 minutes at a measurement timing of 2 seconds, and determining the compression resistance based on the temperature difference between 1 minute and 3 minutes later.
- the thickness after compression is preferably 50 to 99.5% of the mold thickness, more preferably 60 to 99.5%, and still more preferably 60 to 95%.
- the particle size of the water-insoluble solid component is a particle size obtained by separating a sieve using a sieve and passing through the sieve and calculating the caliber force of the sieve. That is, the screen is arranged from the top, 8, 12, 20, 32, 42, 60, 80, 100, 115, 150, 200, 250, 280 mesh, etc.
- the caliber force of the specific mesh is also calculated ( ⁇ m ) and its water-insoluble property It is assumed that the particle size of the solid component.
- Each mesh sieve may be combined with other mesh sieves.
- the 16 mesh pass has a particle size of lmm or less
- the 20 mesh pass has a particle size of 850 m or less
- the 48 mesh pass has a particle size of 300 ⁇ m or less
- the 60 mesh pass has a particle size of 250 ⁇ m or less
- the 65 mesh pass has a particle size of 200 m or less
- 80 mesh pass particle size 180 m or less 100 mesh pass particle size 150 m or less
- 250 mesh pass The particle size should be 63 ⁇ m or less. The same applies to the following meshes.
- the acidic gas may be any gas as long as it is acidic and is a mixture of oxygen gas, air, or an inert gas such as nitrogen gas, argon gas, helium gas, and oxygen gas. Gas is an example.
- the mixed gas is not limited as long as it contains oxygen, but air is particularly preferred among these, which preferably contain 10% or more of oxygen gas.
- catalysts such as platinum, palladium, iridium and their compounds.
- the oxidation reaction can be carried out in an oxidizing gas atmosphere with stirring, if desired, under pressure, and further under Z or ultrasonic irradiation.
- the optimum conditions for the acid-acid reaction may be appropriately determined experimentally.
- the amount of the oxidizing gas used may be adjusted according to the type of oxidizing gas without restriction, the type and particle size of iron powder, the amount of water, the processing temperature, the processing method, and the like.
- open systems there is no limit as long as the required oxygen amount can be taken in.
- open systems should be used so long as they can be surrounded by a breathable material such as nonwoven fabric or woven fabric.
- the amount of air is preferably 0.01 to: LOOO liters Z, more preferably 0 at 1 atm. 01-: LOO liters Z minutes, more preferably 0.1-50 liters Z minutes.
- the oxygen concentration may be converted based on the case of air.
- peracid additives may be added. Hydrogen peroxide and ozone are examples.
- the state of the reaction mixture or the exothermic mixture at the time of the contact treatment with the oxidizing gas may be either a stationary state, a moving state, a fluidized state by stirring, etc., as long as the iron powder is partially oxidized. It may be selected as appropriate.
- the environment of the acidic gas atmosphere and the acidic environment where the reaction mixture, exothermic mixture, and exothermic composition are mixed there is no limitation in the environment of the acidic gas atmosphere and the acidic environment where the reaction mixture, exothermic mixture, and exothermic composition are mixed, and the environment at the time of contact treatment with the mixed oxidizing gas at the time of moisture adjustment is not limited. An example is gas blowing.
- the heat-generating composition is allowed to stand for 1 hour in a non-breathable outer bag in an ambient temperature of 20 ⁇ 1 ° C.
- the iron powder is not limited! Pig iron iron powder, atomized iron powder, electrolytic iron powder, reduced iron powder, sponge iron powder, and iron alloy powder thereof can be used as examples. In addition, these iron powders may contain carbon or oxygen, or iron containing 50% or more of iron and other metals!
- the type of metal contained in the alloy is not particularly limited as long as the iron component acts as a component of the exothermic composition, but metals such as aluminum, manganese, copper, nickel, silicon, cobalt, palladium and molybdenum, semiconductors, etc. Is given as an example.
- the metal of the present invention includes a semiconductor. These metals and alloys may be present only on the surface or on the inside, or on both the surface and the inside.
- the iron powder contains a carbon component and iron powder coated with Z or a carbon component is also preferred. If the iron component is 50% by weight or more with respect to the carbon component, the ratio of the carbon component is Although there is no limitation, iron powder partially covered with 0.3 to 3.0% by weight of conductive carbonaceous material is useful. Examples of conductive carbonaceous materials include carbon black, activated carbon, carbon nanotubes, carbon nanohorns, fullerenes, etc. Iron powder that may be conductive by doping is reduced iron powder or atomized iron powder. Sponge iron powder is an example, and the heating element is particularly useful when the conductive carbonaceous material is activated carbon and the iron powder is reduced iron powder. [0040] In the iron powder of the present invention, the content of metals other than iron is usually 0.01 to 50% by weight, preferably 0.1 to 10% by weight, based on the whole iron powder.
- 0. conductive carbonaceous material coated so as not to impair the flowability of the iron powder in order to perform efficiently from 01 to 0.05 weight 0/0 of oils, such as spindle oil or the like may be ⁇ Ka ⁇ .
- the iron powder in the exothermic composition may be converted from the iron powder in the reaction mixture or the exothermic mixture.
- the ferric oxide film is a film made of iron containing oxygen such as iron oxide, hydroxide, oxyhydroxide and the like.
- the active iron powder forms an iron oxide film at least locally on the surface of the iron powder, and is formed by local batteries formed between the ground iron and the iron oxide film, or by pits inside and outside the iron oxide film. An oxidation reaction promoting effect is considered.
- iron oxide film is formed on the surface of the iron powder, the iron powder particles become irregularly shaped, distortion occurs due to acid and soot, water-containing pits are formed, some kind of functional change occurs, It is presumed that iron powder is activated and heat generation is improved.
- magnetite Fe 2 O 3
- it has excellent conductivity.
- hematite Fe 2 O 3
- it becomes porous the presence of hematite (Fe 2 O 3) is also preferable because it becomes porous.
- the carbon component is oxidized on the surface to become a carbon component with a large amount of surface oxide, the hydrophilicity is increased, and the activity is also increased.
- the reaction accelerator is not limited as long as it can accelerate the reaction of the exothermic substance.
- examples thereof include metal halides, nitrates, acetates, carbonates, metal sulfates and the like.
- Metal halides include sodium chloride, potassium chloride, magnesium chloride, calcium chloride, ferrous chloride, ferric chloride, sodium bromide, potassium bromide, ferrous bromide, bromide
- Examples include ferric iron, sodium iodide, potassium iodide and the like.
- Examples of nitrates include sodium nitrate and potassium nitrate.
- An example of the acetate is sodium acetate.
- Examples of the carbonate include ferrous carbonate and the like.
- metal sulfates examples include potassium sulfate, sodium sulfate, ferrous sulfate and the like.
- the water may be from a suitable source. There are no restrictions on the purity and type.
- the water content is 1 to 60% by weight of the exothermic composition, more preferably 1 to 40% by weight, still more preferably 7 to 40% by weight, still more preferably 10 to 35% by weight, Preferably it contains 20-30% by weight.
- reaction mixture and an exothermic mixture before contact treatment with an oxidizing gas 0.5 to 20% by weight of the reaction mixture or the exothermic mixture, more preferably 1 to 20% by weight, still more preferably 5 to 20% by weight. %, More preferably 7 to 15% by weight.
- the exothermic composition is taken out from the heating element and measured according to the method for measuring the mobile water value.
- a heat-generating composition 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.
- the exothermic composition molded body includes the exothermic composition compressed body.
- the reaction mixture and exothermic mixture of the present invention are not limited in the blending ratio, but iron powder (in the case of iron powder having an iron oxide film, iron powder converted in terms of the amount of iron component) 100 wt.
- iron powder in the case of iron powder having an iron oxide film, iron powder converted in terms of the amount of iron component
- 1.0 to 5.0 parts by weight of a reaction accelerator and 0.5 to 20 parts by weight of water are preferable, and 1.0 to 50 parts by weight of a water component and 0.01 to 10 parts by weight of a water retention agent are preferred.
- organic key compound 01 to 5 parts by weight, organic key compound, pyroelectric material, moisturizer, fertilizer component, hydrophobic polymer compound, antifoaming agent, heat generation aid, metal other than iron, metal oxide other than iron oxide
- organic key compound pyroelectric material
- moisturizer pyroelectric material
- fertilizer component pyroelectric material
- hydrophobic polymer compound e.g., silicone dioxide
- antifoaming agent examples include those used in this field in addition to a normal pH adjusting agent such as sodium polyphosphate.
- the reaction mixture of the present invention contains iron powder, a reaction accelerator and water as essential components, and further includes a carbon component, a water retention agent, a water-absorbing polymer, a pH adjuster, a hydrogen generation inhibitor, an aggregate, and a fibrous form.
- a carbon component e.g., a carbon-based polymer
- a water retention agent e.g., a water-based polymer
- a pH adjuster e.g., a sodium bicarbonate
- a hydrogen generation inhibitor e.g., sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbonate, sodium bicarbon
- the carbon component is not limited as long as it contains carbon as a component.
- Examples include carbon black, black bell, activated carbon, carbon nanotube, carbon nanohorn, and fullerene. It may have conductivity by doping or the like.
- Examples include activated carbon prepared from coconut shells, wood, charcoal, coal, bone charcoal, and other raw materials such as animal products, natural gas, fats, oils and resins. In particular, activated carbon having adsorption retention ability is preferable.
- the carbon component if iron powder containing a carbon component that does not necessarily need to be present alone and coated with Z or carbon component is used in the exothermic composition, the carbon component does not exist alone.
- the exothermic composition shall contain a carbon component.
- the water retention agent is not limited as long as it can retain water.
- Wood flour, pulp flour, activated carbon, sawdust, cotton fabric with many fluff, cotton short fibers, paper scraps, plant material and other plant porous materials with large capillary function and hydrophilicity, activated clay Examples include hydrous magnesium silicate clay minerals such as zeolite, perlite, vermiculite, silica-based porous materials, fossil fossil, volcanic ash-based materials (terra balloon, shirasu balloon, tyset balloon, etc.) It is done.
- hydrous magnesium silicate clay minerals such as zeolite, perlite, vermiculite, silica-based porous materials, fossil fossil, volcanic ash-based materials (terra balloon, shirasu balloon, tyset balloon, etc.) It is done.
- those that have been processed by firing and / or pulverization are also acceptable.
- the water-absorbing polymer is not particularly limited as long as it has a cross-linked structure and has a water absorption ratio of 3 times or more with respect to its own weight. It may also be a cross-linked surface. Conventionally known water-absorbing polymers and commercially available products can also be used.
- a crosslinked poly (meth) acrylic acid a crosslinked poly (meth) acrylate, a crosslinked poly (meth) acrylate having a sulfonic acid group, and a polyoxyalkylene group.
- the water-absorbing polymer having biodegradability in the water-absorbing polymer is not limited as long as it is a water-absorbing polymer having biodegradability.
- Examples include crosslinked polyethylene oxide, crosslinked polyvinyl alcohol, crosslinked carboxymethyl cellulose, crosslinked alginic acid, crosslinked starch, crosslinked polyamino acid, crosslinked polylactic acid, and the like.
- the pH adjusting agent is not limited as long as the pH can be adjusted.
- the hydrogen generation inhibitor is not limited as long as it suppresses the generation of hydrogen.
- An example is a compound having at least one kind or two or more kinds selected from the group consisting of thio compounds, oxidizing agents, alkaline substances, io, antimony, selenium, phosphorus and tellurium.
- the io compound is a compound with an alkali metal or an alkaline earth metal.
- metal sulfates such as lucium
- metal sulfites such as sodium sulfite
- metal thiosulfates such as sodium thiosulfate.
- oxidizing agent examples include nitrate, oxide, peroxide, halogenated oxyacid salt, permanganate, chromate and the like.
- the alkaline substance is not limited as long as it is an alkaline substance. Silicate, phosphate, sulfite, thiosulfate, carbonate, bicarbonate, hydroxide, Na PO,
- An example is Ca (OH).
- the aggregate is not limited as long as it is useful as a filler and is useful for making Z or a porous exothermic composition.
- Fossil coral coral fossil, weathered reef coral, etc.
- bamboo charcoal Bincho charcoal
- silica-alumina powder silica-magnesia powder
- kaolin crystalline cellulose
- colloidal silica pumice
- silica gel silica powder
- silica powder my power flour, clay, talc
- Examples include synthetic resin powders and pellets, foamed synthetic resins such as foamed polyester and polyurethane, algae, alumina, and fiber powder.
- Kaolin and crystalline cellulose are not included in the exothermic composition of the present invention, but are included only when used as an adhesive.
- fibrous material examples include inorganic fibrous materials and Z or organic fibrous materials.
- Examples include rock wool, glass fiber, carbon fiber, metal fiber, pulp, paper, non-woven fabric, woven fabric, natural fibers such as cotton and hemp, regenerated fibers such as rayon, semi-synthetic fibers such as acetate, synthetic fibers and pulverized products thereof. As mentioned.
- the functional substance is not limited as long as it has a function, but examples include at least one selected from anion generating substance and far-infrared emitting substance force.
- the negative ion generating substance is not limited as long as negative ions are generated as a result, whether directly or indirectly.
- Examples include tourmaline, fossilized coral, granite, co-dielectrics such as calcium strontium propionate, ores containing radioactive materials such as radium and radon.
- the far-infrared emitting substance is not limited as long as it emits far-infrared rays.
- Examples thereof include ceramic, anolemina, zeolite, zirconium, silica and the like.
- Examples of the surfactant include a surfactant containing a cation, a cation, a non-ion and an amphoteric ion. Includes sex agents.
- sex agents polyoxyethylene alkyl ethers, alkylphenol 'ethylene oxide adducts, higher alcohol phosphates, and the like, which are preferred as nonionic surfactants, can be mentioned.
- the organic silicon compound is not limited as long as it is a compound having at least Si—O—R and / or Si—N—R and / or Si—R bonds.
- Examples thereof include organic silane compounds such as methyltriethoxysilane, dimethyl silicone oil, polyorganosiloxane, and silicone resin compositions containing them in the form of monomers, low condensates, polymers, and the like. .
- the pyroelectric substance is not limited as long as it has pyroelectricity (pie mouth electricity or pyro electricity).
- Examples include tourmaline and pyroelectric minerals.
- tourmaline which is a kind of tourmaline is preferable.
- tourmalines examples include drabite (mafic tourmaline), shawls (iron tourmaline), and elvite (lithia tourmaline).
- the moisturizing agent is not limited as long as it can be moisturized. Examples include hyaluronic acid, collagen, dariserine, urea and the like.
- the fertilizer component is not limited as long as it is a component containing at least one of the three elements of nitrogen, phosphoric acid, and potassium. Examples include bone meal, urea, ammonium sulfate, lime superphosphate, potassium chloride, calcium sulfate and the like.
- the hydrophobic polymer compound has a contact angle with water of 40 ° or more, more preferably 50 ° or more, and still more preferably 60 ° or more, in order to improve drainage in the composition. If there is no limit. Examples include powders, granules, granules, tablets, etc. whose shape is not limited. Examples include polyolefins such as polyethylene and polypropylene, polyesters, polyamides, and the like.
- heat generation aid examples include metal powders, metal salts, metal oxides, etc., such as Cu, Mn, Cu CI, FeCl, diacid-manganese, cupric oxide, iron tetroxide, etc. Or a mixture of them
- Examples of the acidic substance include hydrochloric acid, sulfuric acid, nitric acid, acetic acid, oxalic acid, citrate, malic acid, maleic acid, chloroacetic acid, iron chloride, sulfuric acid, which may be any of inorganic acid, organic acid, and acidic salt.
- Examples include iron, iron oxalate, iron citrate, salt-aluminum, salt-ammonium, hypochlorous acid, and the like.
- the exothermic composition of the present invention contains iron powder, a carbon component, a reaction accelerator and water as essential components, and further includes a water retention agent, a water-absorbing polymer, a pH adjuster, a hydrogen generation inhibitor, an aggregate, and a fiber.
- the exothermic composition of the present invention contains iron powder, a carbon component, a reaction accelerator, and water as essential components, and the production method thereof can be industrially put into practical use.
- the iron powder, the reaction accelerator, and water are used.
- As an essential component a reaction mixture with a water content of 1 to 20% by weight and a mobile water value indicating excess water of less than 0.01 is brought into contact with an oxidizing gas in an environment of 0 ° C or higher and within 10 minutes.
- the temperature rise of the reaction mixture is set to c or more to produce an exothermic mixture, and the exothermic mixture is used as a raw material to obtain an exothermic composition.
- the moisture may be further adjusted to obtain a heat generating composition, or a carbon component or the like may be added or the water content may be adjusted to obtain a heat generating composition.
- the water content of the reaction mixture is set to a certain amount or less, particularly the excess water amount is set to a certain amount or less, and the oxidizing contact treatment can be performed in a short time.
- the amount of excess water and treating for a short time adverse effects caused by the oxidizing gas contact treatment such as poor initial heat generation of the exothermic composition and shortened heat generation retention time can be avoided.
- Industrial mass production method was established. Further, during the oxidizing gas contact treatment, it is not necessary to perform stirring or the like, but if the stirring is performed, the acidic gas contact treatment can be surely performed.
- the state of the reaction mixture or the exothermic mixture in the contact treatment with the oxidizing gas may be appropriately determined as long as the iron powder is partially oxidized, whether it is a stationary state, a moving state, or a fluidized state by stirring.
- examples include an oxidizing gas atmosphere and an oxygen-containing gas blowing, in which there are no restrictions on the environment when mixing the components of the reaction mixture, the exothermic mixture, and the exothermic composition and at the time of moisture adjustment.
- Moisture adjustment is the treatment of water or a water solution of a reaction accelerator after the exothermic mixture is contacted with an oxidizing gas.
- an oxidizing gas There is no limit to the amount to be added, but the weight reduced by the contact treatment
- An example is to measure the amount, or to measure the weight at which the desired mobile water value is obtained. Whether or not moisture adjustment is performed may be appropriately determined depending on the application.
- the exothermic composition of the present invention comprises iron powder, a carbon component, a reaction accelerator and water as essential components, and a reaction mixture containing iron powder, a reaction accelerator and water as essential components is contact-treated with an oxidizing gas.
- This is an exothermic composition having excellent moldability, which is obtained by adjusting the moisture content of an exothermic mixture and is combined with an appropriate amount of surplus water that has a high exothermic rise. It can also be used to produce a heating element that quickly warms up during use.
- the iron powder including the carbon component, has an oxidation history due to the contact treatment with the acidic gas, and this is deeply related to excellent heat buildup property, heat generation sustainability and excellent moldability. It seems that
- the compression resistance is preferably 80% or more, more preferably 85% or more, and further preferably 90% or more.
- the carbon component such as activated carbon in the exothermic composition can be reduced by, for example, 20% or more. Decreasing the amount of carbon component added reduces costs.
- the exothermic composition of the present invention is not limited in its blending ratio, but iron powder (in the case of iron powder having an iron oxide film, iron powder in terms of the amount of iron component.
- 100 parts by weight of carbon component is preferably 1.0-50 parts by weight, reaction accelerator 1.0-5.0 parts by weight, and water 5-60 parts by weight.
- 0.01-10 parts by weight of water retention agent, 0.01-20 parts by weight of water-absorbing polymer, 0.01-5 parts by weight of pH adjuster, 0.01-12 parts by weight of hydrogen generation inhibitor, aggregate, Fibrous substances and functional substances are each 0.01 to 10 parts by weight, surfactant 0.01 to 5 parts by weight, organic silicon compound, pyroelectric substance, moisturizer, fertilizer component, hydrophobic polymer compound,
- the defoaming agent, heat generation aid, metal other than iron, and metal oxide other than iron oxide are each preferably 0.01 to 10 parts by weight and acidic substance 0.001 to 1 part by weight.
- an exothermic composition having excellent exothermic rising property, excellent hydrophilicity, and excellent moldability can be obtained.
- an exothermic composition having remarkably excellent moldability and exothermic characteristics can be obtained.
- the exothermic composition produced by the production method of the present invention has significantly improved exothermic rise. Therefore, the amount of carbon components such as activated carbon in the exothermic composition can be reduced by, for example, 20% or more, which can contribute to cost reduction.
- the hydrophilicity is remarkably improved, the moldability using the mold is remarkably improved, so that the pieces of the exothermic composition are not scattered around the exothermic composition molded body after molding, so that the seal is not scattered. It is possible to produce a heating element that is accurate and has no seal breakage. Thereby, various shaped exothermic composition molded bodies can be produced, and various shaped exothermic bodies can be produced.
- the heating element provided in the market and containing the exothermic composition in a storage bag is provided on the assumption that it can be stored in an outer bag, which is a non-breathable storage bag, for long-term storage. Preference is given to using exothermic compositions containing generation inhibitors! Since the exothermic composition that has undergone the contact treatment with the oxidizing gas is an active composition, it is important to contain a hydrogen generation inhibitor. In addition, the combined use of the pH adjuster further enhances the efficacy.
- 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.
- Adhesive materials or binders 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.
- water-soluble polymer a water-soluble polymer in the pressure-sensitive adhesive layer can be used.
- the particle size of the reaction mixture, exothermic mixture, and solid components constituting the exothermic composition is not limited as long as the exothermic composition has moldability. However, when reducing any of the sizes (length, width, height) of the exothermic composition molded body, it is preferable to reduce the particle size of the solid formation.
- the maximum particle size of the water-insoluble solid component excluding the reaction accelerator and water is preferably 2.5 mm or less, more preferably 930 / zm or less, even more preferable.
- it is preferably 500 ⁇ m or less, more preferably 300 ⁇ m or less, further preferably 250 / zm or less, further preferably 150 / zm or less, and further preferably 100 m or less. is there.
- the exothermic composition is a powder or granular exothermic composition depending on the moisture adjustment state and the amount of excess water.
- the water-soluble polymer compound is not limited as long as it is a water-soluble organic polymer. Denbum, gum arabic, methylcellulose (MC), carboxymethylcellulose (CMC), sodium carboxymethylcellulose, polybulualcohol, gelatin, polyacrylic acid, polyacrylic acid salt, polyacrylic acid partial neutralized product, polybulurpyrrolidone, N— An example is a vinylacetamide copolymer alone or a combination of two or more. Next, the heating element will be described.
- the heating element of the present invention is a heating element in which an exothermic composition is stored in a storage bag that is at least partially breathable.
- the heat generating part may be formed in one section, or the heat generating section may be formed from two or more divided heat generating sections arranged apart from each other.
- the heating element of the present invention is sealed in an outer bag which is a non-breathable storage bag.
- the breathable storage bag used in the present invention holds the exothermic composition inside the bag and has a strength that does not cause the bag to break while preventing the raw material from leaking during use of the heating element.
- the material and the packaging structure are not particularly limited as long as they have air permeability necessary for heat generation.
- the breathability of the storage bag can be provided on a part, one surface or both surfaces of the bag, and the breathable surface can be constituted by a breathable packaging material.
- the air permeability on one side and the other side may be different.
- the storage bag of the present invention comprises a base material and a covering material, and a covering material may be provided between the base material and the covering material.
- the breathable storage bag of the present invention holds the mixture inside the bag and has a strength that prevents the material from leaking during use of the heating element and does not break, and is necessary for heat generation. As long as it has air permeability, it is not particularly limited to the material and packaging composition.
- the breathability of the storage bag can be achieved by using a breathable packaging material on a part, one side or both sides of the bag.
- the air permeability is not limited as long as heat generation can be maintained.
- the air permeability is the moisture permeability by the Lissy method (Lyssy method)
- LO Lissy method
- OOOg / mV 24hr preferably 50 ⁇ 5
- OOOgZm so 24hr more preferably 70 to 5
- it is a 00 0g / m 2 / 24hr, further [this preferably ⁇ or 700-1, a 000g / m 2 / 24hr, further [this preferred properly is 80 ⁇ 800gZm 2 Z24hr.
- gZm 2 Z24hr has the same meaning as gZ (m 2 Z24hr).
- the moisture permeability is less than 50, the calorific value is reduced and a sufficient thermal effect cannot be obtained. On the other hand, if it exceeds 10,000 gZm 2 Z24hr, the exothermic temperature becomes high and there is a possibility that a safety problem may occur.
- the breathable material constituting the breathable storage bag can be formed into a film, and exhibits breathability by methods such as stretching and extraction of Z or soluble filler, or perforation with an ultrafine needle. It is not particularly limited if possible.
- a breathable film such as a porous film and a perforated film, paper, nonwoven fabric, or the like that has a breathability alone, paper, and a breathable film or a nonwoven fabric, etc., are laminated to provide a breathability.
- a non-breathable packaging material with polyethylene film laminated to non-woven fabric with fine holes using needles etc. to make it breathable, fiber laminated and thermocompression bonded, breathable
- a non-woven fabric, a porous film, or a non-woven fabric bonded to a porous film can be used.
- the porous film examples include a porous film obtained by stretching a film made of a filler material such as polyethylene, a polyolefin resin such as linear low density polyethylene and polypropylene, a fluorine resin such as polytetrafluoroethylene, and the like.
- a quality film can be selected as appropriate.
- the perforated film is a non-breathable film such as a polyethylene film provided with fine holes with a needle to provide breathability.
- the packaging material of the storage bag may have a single layer structure or a multilayer structure.
- the structure is not limited, but as an example of a multilayer structure,
- Base material is A layer ZB layer or A layer ZB layer ZC layer or A layer ZB layer ZC layer ZD layer or coating material is F layer ZG layer or E layer ZF layer ZG layer or F layer ZH layer ZG layer force For example.
- Layer A consists of thermoplastic resin films such as polyethylene, polyethylene, heat seal layers such as EVA and EVA and polyethylene, water-absorbing paper, etc.
- Layer B is a non-woven fabric of thermoplastic resin such as nylon, non-water absorbent paper, water absorbent paper, polyethylene film, polypropylene film, polyester film, polyamide (nylon etc.) film, etc.
- Thermoplastic resin film, non-water absorbent Core materials such as paper and water-absorbent paper, etc.
- c layer is an adhesive layer, non-water-absorbent paper, water-absorbent paper, thermoplastic resin film such as polyethylene, non-slip layer, nonwoven fabric of thermoplastic resin such as polyester and nylon, etc.
- D layer is a separator, thermoplastic resin film such as polyethylene, non-woven fabric, etc.
- E layer is a heat seal layer, etc.
- F layer is made of polyethylene, thermoplastic porous film or perforated film, polyethylene thermoplastic film, non-water absorbent paper, water absorbent paper, etc.
- G layer is a nonwoven fabric of thermoplastic resin such as polyester and nylon,
- the H layer is non-water absorbent paper, water absorbent paper or the like.
- a base material or a covering material For example, as an example of a base material or a covering material,
- Nonwoven fabric Z paper porous film Z perforated (needle, laser) film,
- Nonwoven fabric Z paper, porous film Z nonwoven fabric, etc. are mentioned as an example. There are no restrictions on the method of laminating each layer. Direct lamination of each layer is also possible. Each layer may be laminated by hot melt extrusion or the like, which may be laminated via a breathable adhesive layer or a laminating agent layer. .
- polyethylene includes polyethylene produced using a meta-orthocene catalyst.
- the heating element is stored in an outer bag which is a non-breathable storage bag, stored and transported. However, if the outer bag is non-breathable, it is laminated without any other restrictions.
- Non-breathable materials include polyethylene, polypropylene, cellophane, polyester, polyamide, polybulal alcohol, polychlorinated bur, polysalt vinylidene, polyurethane, polystyrene, ethylene vinyl acetate copolymer, polycarbonate, hydrochloric acid rubber Etc.
- polyolefin-based resin examples include homopolymers such as polyethylene, polypropylene, and polybutadiene, copolymers, and blend polymers thereof.
- non-breathable high film a non-breathable material film in which a thin film of a metal containing a semiconductor or a compound thereof is provided in a single layer or multiple layers is provided.
- the metal containing a semiconductor include silicon, aluminum, titanium, tin, indium, and alloys and mixtures containing these metals.
- Examples of the metal compound including a semiconductor include oxides, nitrides, and oxynitrides of the above metals, alloys, and mixtures.
- a silicon oxide layer for example, a silicon oxide layer, an aluminum oxide layer, a silicon oxynitride layer, or a laminate of these arbitrary layers can be given as an example.
- a heating element in which the manufactured heating element is sealed between two non-breathable films or sheets can be cited as an example.
- the material constituting the base material, the covering material, and the covering material is not limited as long as it functions as a storage bag for the exothermic composition, and is conventionally used for a breathable storage bag for a heating element. Can be used.
- non-breathable materials examples include non-breathable materials, breathable materials, water-absorbing materials (such as paper and rayon), non-water-absorbing materials, stretchable materials, non-stretchable materials, foamed materials, and heat-sealable materials.
- breathable materials such as paper and rayon
- water-absorbing materials such as paper and rayon
- stretchable materials such as paper and rayon
- non-stretchable materials stretchable materials
- foamed materials such as foamed materials
- heat-sealable materials examples include heat-sealable materials.
- the film, sheet, non-woven fabric, woven fabric, and the like and their composites may be used as appropriate according to the desired application.
- the non-water-absorbing material is not limited as long as it is non-water-absorbing.
- Polyethylene, polyp Examples include synthetic films such as propylene, nylon, acrylic, polyester, polybutyl alcohol, polyurethane, and the like, films, sheets, and coatings having the same hydrophobic polymer.
- the stretchable packaging material is not particularly limited as long as it has stretchability. That is, as a whole, it may be a single product as long as it has stretchability, or a composite product composed of stretchable substrates or a combination of a stretchable substrate and a non-stretchable substrate.
- the fibers constituting the woven fabric it is possible to use regenerated fibers, semi-synthetic fibers, synthetic fibers using natural materials such as natural fibers and viscose fibers, and mixtures of two or more of these. it can. These fibers can also be used as a fibrous material.
- the non-woven fabric is manufactured by joining fibers by entanglement or adhesion using heat, adhesive, or thermal, chemical, physical, mechanical means such as high-pressure water flow. If it is a cloth-like sheet, there are no restrictions on stretchability, non-stretchability, water absorption, non-water absorption, heat sealability, non-heat sealability, etc. It may have more than one species. Examples include rayon, nylon (polyamide), polyester, talyl, polypropylene, vinylon, polyethylene, polyurethane, cupra, cotton, cellulose, pulp and other vegetable fibers, synthetic pulp, thermoplastic polymer materials, etc.
- a composite fiber, a mixed fiber of these, or a mixture thereof is used, and a single nonwoven fabric or a mixed paper of these fibers or a lamination of cumulative fiber layers is used.
- a short fiber nonwoven fabric, a long fiber nonwoven fabric, and a continuous filament nonwoven fabric can also be used.
- dry non-woven fabric, wet non-woven fabric, spunbond, spunlace, etc. can be used for manufacturing.
- the stretchable nonwoven fabric is not limited as long as it has stretchability. However, it is not limited as long as it is made of elastomeric rubber fibers, entangled polyolefin or polyester crimped fibers, and binders are heat-melted. Examples thereof include stretchable nonwoven fabrics and polyurethane-based nonwoven fabrics by a method of wearing. It may be a non-woven fabric composed of core-sheath composite fibers.
- the basis weight of the nonwoven fabric is not limited. Preferably it is usually 10 ⁇ 200gZm 2.
- the paper is water-absorbing and is not limited as long as it is normally used.
- Examples include paper and cardboard.
- thin paper such as blotting paper, tissue paper, crepe paper, wrapping paper such as kraft paper, hybrid paper such as card paper, corrugated cardboard core such as cardboard, pulp core and special core, corrugated cardboard liner such as kraft card
- hybrid paper such as card paper
- corrugated cardboard core such as cardboard
- pulp core and special core corrugated cardboard liner
- kraft card One or more types of laminates, such as thick paper such as balls and construction paper such as gypsum board base paper, are examples.
- the non-water-absorbing paper is not limited as long as it is non-water-absorbing.
- non-water-absorbing treatment For example, an oil or synthetic resin impregnated or non-water-absorbing treated with a coating, or a non-water-absorbing material such as a polyethylene film is laminated.
- the papers and the non-water-absorbing papers may be subjected to water-resistant processing, or may be provided with through-holes by using a laser, a needle, or the like to adjust or have air permeability.
- foam material examples include foamed polyurethane, foamed polystyrene, foamed ABS resin, foamed polysalt vinyl, foamed polyethylene or foamed polypropylene, and foams such as sheets formed of at least one selected. As mentioned.
- the heat-sealable material is not limited as long as at least a part of the material that can be heat-sealed can be joined by heating, even if it is a composite material having a heat-sealing layer.
- Materials that can be heat-sealable and hot-melt adhesives that make up the heat-seal layer include polyethylene / polyolefin polyolefin resins such as polypropylene, ethylene methyl methacrylate copolymer, ethylene methyl methacrylate acrylic ester Copolymer, ethylene ⁇ -olefin copolymer, ethylene acetate butyl copolymer resin, ethylene isobutyl acrylate copolymer resin, ethylene acrylate ester copolymer resin, ethylene hot melt resin, polyamide hot Melt resin, Polyester hot melt resin, Butyral hot melt resin, Cellulose derivative hot melt resin, Polymethyl methacrylate hot melt resin, Polybule ether hot melt resin Examples thereof include hot melt resins such as fats, polyurethane-based hot melt resins, polycarbonate-based hot melt resins, acetic acid bulls, salt-bull acetic acid bule copolymers, and films and sheets thereof.
- blended additives such as various anti-oxidation agents
- low-density polyethylene, polyethylene using a meta-octane catalyst, and ethylene- ⁇ -olefin copolymer are useful.
- a-olefins include polypropylene, 1-butene, 1-heptene, 1-hexene, 1-octene, 4-methyl 1-pentene, etc., which are not limited as long as the double bond is a terminal monomer. .
- a biodegradable material is used in addition to the materials conventionally used. Can be used.
- the exothermic composition including the base material, the covering material, the breathable pressure-sensitive adhesive layer, the covering material, and the exothermic composition molded body, at least the exothermic composition may be compressed!
- the heat-generating composition molded body of the present invention when compressed by an appropriate amount by pressurization, the shape maintaining property is remarkably improved.
- a perforated film that is difficult to adjust pressure is used instead of a porous film as a material for a ventilation portion. Even if it is used, even if the internal pressure of the storage bag exceeds the external pressure, the shape does not easily collapse and the use of perforated film is possible, so the range of choice of breathable materials can be expanded and the cost can be reduced.
- the heated body can be heated uniformly at a moderate temperature for a long time.
- the exothermic composition molded body obtained by compressing the exothermic composition of the present invention is an inelastic body, and the compression resistance of the exothermic composition is preferably 80% or more, more preferably 85% or more. Preferably it is 90% or more, and may exceed 100%.
- At least a part or one section of the heat generating part may contain a magnetic substance, and a magnetic substance such as a magnet may be accommodated for the purpose of improving blood circulation or stiff shoulders by a magnetic effect.
- a magnetic substance such as a magnet
- the separator may be provided with a slit or the like so as to be easily separated.
- the adhesive layer is preferably non-transferable.
- At least one selected from the base material, the covering material, the covering material, and the pressure-sensitive adhesive layer includes a moisturizing agent and a function. It may contain or carry at least one selected from the additional ingredients consisting of sex substances, aggregates, pyroelectric substances, magnetic substances or mixtures thereof.
- contents are not particularly limited, but are preferably 0.01 to 25 parts by weight, more preferably 0.01 to 25 parts by weight with respect to 100 parts by weight of the adhesive from the viewpoints of pharmacological effect, economy, and adhesive strength. It is preferably 0.5 to 15 parts by weight.
- a hot melt adhesive may be provided between the hydrophilic adhesive layer and the substrate or the covering material.
- the hydrophilic pressure-sensitive adhesive is provided on the heating element, but it is preferable that the hydrophilic pressure-sensitive adhesive is provided on the heating element after the heating element is sealed.
- the heat generating part of the present invention may form the heat generating part in one section, or two or more sections are arranged apart from each other to form a fixed section heat generating part, and from the set of the section heat generating parts.
- a heat generating part may be formed and used as the heat generating part.
- the size of the exothermic composition molded body on the substrate is equal to or smaller than the size of the divided heat generating part, and the peripheral edge of the exothermic composition molded body is heat-sealed.
- the volume of the heat generating part and the heat generating part are composed of the volume of the heat generating composition filled or the volume of the exothermic composition molded body and the space volume surrounding it.
- the volume ratio of the volume of the molded article is usually about 0.3 to about 1.0, preferably about 0.35 to about 1.0, more preferably about 0.5 to about 1.0. Yes, more preferably from about 0.7 to about 1.0, more preferably from about 0.8 to about 1.0, and even more preferably from about 0.9 to about 1. 0.
- the section heating part when the section heating part is formed, the smaller the size of the heating element, the more flexible the heating element as a whole.
- at least one side of the divided heat generating part composed of two sides having different lengths should be as short as possible.
- the longest length of the segmented heat generating portion composed of the same side such as a square or one diameter such as a circle is as short as possible.
- the divided heat generating portion accommodates the exothermic composition or the exothermic composition molded body divided by the dividing portion which is a seal portion.
- the segment exothermic part or the exothermic composition molded body of the present invention has a maximum width of usually 0.5 to 60 mm, preferably 0.5 to 50 mm, more preferably 1 to 50 mm, More preferred Or 3 to 50 mm, more preferably 3 to 30 mm, still more preferably 5 to 20 mm, still more preferably 5 to 15 mm, and still more preferably 5 to 10 mm.
- the maximum height is usually 0.1 to 30 mm, preferably 0.1 to 10 mm, more preferably 0.3 to 10 mm, still more preferably 1 to 10 mm, and still more preferably. 2-10mm.
- the longest length is usually 5 to 300 mm, preferably 5 to 200 mm, more preferably 5 to: LOOmm, still more preferably 20 to 150 mm, still more preferably 30 to L00 mm. It is.
- the volume of the section heat generating portion or the volume of the exothermic composition molded body is usually from 0.015 to 500 cm 3 , preferably from 0.04 to 30 cm 3 , more preferably from 0.1 to 30 cm 3 . , more preferably from L ⁇ 30cm 3, more preferably from 3 ⁇ 20cm 3.
- the volume of the heat generating composition molded body, which is the heat generating composition molded area, and the heat generating composition storage area when the divided heat generating portion, which is a heat generating composition storage area, is filled with the heat generating composition molded body, the volume of the heat generating composition molded body, which is the heat generating composition molded area, and the heat generating composition storage area.
- the volume ratio with the volume of the divided heat generating portion is usually 0.6 to 1, preferably ⁇ or 0.7 to 1, more preferably ⁇ or 0.8 to 1, and further preferably ⁇ or 0.00. 9 to 1.0.
- the width of the divided portion which is the interval between the divided heat generating portions, is not limited as long as it can be divided.
- Force Usually 0.1 to 50 mm, preferably 0.3 to 50 mm, more preferably 0.3 to 50 mm. Yes, more preferably 0.3 to 40 mm, further preferably 0.5 to 30 mm, more preferably 1.0 to 20 mm, and further preferably 3 to 10 mm.
- the shape of the exothermic composition molded body or the divided heat generating portion may be any shape, but examples thereof include a flat shape, such as a circle, an ellipse, a polygonal shape, a star shape, and a flower shape.
- a flat shape such as a circle, an ellipse, a polygonal shape, a star shape, and a flower shape.
- An example is the shape.
- these shapes may be rounded at the corners, and the corners may be curved or curved, and there may be a recess in the center.
- the volume of the exothermic composition part molded body of the present invention means the volume of the exothermic composition molded body or the compressed exothermic composition molded body.
- volume of the segmented heat generating part is the internal volume of the segmented heat generating part containing the exothermic composition molded body. Means product.
- the height of the central portion gradually decreases toward the peripheral portion, that is, has a height gradation.
- it has the opposite height gradation, but you can.
- the molding order determines the size of the exothermic composition molded body, and then determines the size of the partial heat generating portion.
- the sorting heat generating part, the storage bag, the outer bag (heating element storage bag), etc. have a force that seals the packaging material constituting the sorting part and its peripheral part.
- a force that seals the packaging material constituting the sorting part and its peripheral part For example, pressure-sensitive seal (adhesive seal), heated pressure-bonded seal (adhesive seal) by means of pressure, heating, heating, etc. or a combination thereof through the pressure-sensitive adhesive layer and Z or adhesive layer and Z or heat seal layer
- a force s one of which may be a dot-like (broken-line) or full-face shape, such as an adhesive seal, a thermal adhesive seal, a heat-sealed seal (heat seal), etc. Combinations are selected as desired.
- the divided heat generating portion, the inner bag (storage bag), the outer bag, and the like can be sealed and formed. Sewing can also be used as a means of sealing.
- the width of the peripheral portion of the base material forming the storage bag such as the base material or the sealing portion of the partitioning portion can be appropriately determined. Usually, it is 50 mm or less, preferably 1 to 30 mm, more preferably 3 to 20 mm.
- a cutting line such as a perforation can be provided in the section.
- This perforation may be a degree that can be cut by hand, such as a degree that improves flexibility, or a shape that is formed into a heat generating body having a size according to the application location of the human body. There is no limit to the degree, and it is determined as desired.
- a heating element in which a large number of the divided heat generating portions are connected at intervals and the perforated perforated line is provided in the divided portions is based on the purpose of use such as a place to be applied to a human body. It can be cut and applied to an appropriate size according to the usage.
- the size of the heating element and the size and number of the divided heating portions may be set appropriately. There is no limit to their size or number.
- the dividing portion can be formed in an arbitrary direction such as a vertical or horizontal direction, a vertical and horizontal direction, or an oblique direction.
- a breathable pressure-sensitive adhesive layer such as a reticulated polymer, and a non-woven cloth or the like is provided between the breathable pressure-sensitive adhesive layer and the covering material. You may choose.
- pressure treatment or the like may be performed on the entire surface or a part of at least one of the exothermic composition molded body, the base material, the covering material, and the covering material, or irregularities may be formed. These may prevent the laminate from moving between the base material and the coating material.
- the perforation of the present invention is one that has been cut intermittently to increase the bendability of the section, or one that has been cut intermittently to the extent that hand cutting is possible. There are no restrictions on the degree, length, and caliber. This perforation may be provided in all sections.
- a perforation cut intermittently to the extent that it can be cut by hand is a circular hole having a diameter of ⁇ 10 to 1200 / ⁇ ⁇ .
- the diameter of the hole is more preferably ⁇ 20 to 500 ⁇ m.
- the holes are in positions aligned vertically and horizontally.
- the distance between the outer circumferences of adjacent holes in the vertical and horizontal directions is not limited as long as it satisfies the bendability and the possibility of hand cutting, but is preferably 10 to 2000 / ⁇ ⁇ , more preferably It is 10 to 1500 m, more preferably 20 to 200 m: LOOO / zm, more preferably 20 to 500 m, and more preferably 20 to 200 m.
- the hand cutting performance is remarkably improved by the balance of the shortest distance between the hole diameters and the outer circumferences of adjacent holes.
- the length of the hole may be longer than the length corresponding to the diameter of the hole.
- the shortest distance between the ends of adjacent cuts in the vertical and horizontal directions corresponds to the shortest distance between the outer peripheries of the adjacent holes in the vertical and horizontal directions.
- a hole with a diameter of 10 to 2000 ⁇ m has a length of 10 to 2000 ⁇ m, and the shortest distance between the outer circumferences of adjacent holes in the vertical and horizontal directions is 10 to 2000 m. Corresponds to the shortest distance between the ends of 10 to 2000 m.
- a thermal packaging body for the joint peripheral part or a heat generating part is fixed to a required part.
- a fixed capacity that can be determined There is no limitation as long as it has a fixed capacity that can be determined.
- 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.
- the adjustment fixing means may be further constituted by a combination of a hook-and-loop fastener and an adhesive layer.
- the hook-and-loop fastener is known by a trade name 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 female fastener.
- the loop function include non-woven fabrics, woven fabrics of yarn having fluff and traps, and the like. Even if the core material forming the band is coated with 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 adhered to the entire area of the fastening tape, or the tape substrate 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.
- the pressure-sensitive adhesives of the present invention are classified into non-hydrophilic pressure-sensitive adhesives, mixed pressure-sensitive adhesives, and hydrophilic pressure-sensitive adhesives (Giel etc.).
- the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer is not limited as long as it has an adhesive force necessary to adhere to the skin or clothes. Solvent type, aqueous type, emulsion type, hot melt type, reactivity, sensitivity Various types such as pressure system, non-hydrophilic adhesive, hydrophilic adhesive, etc. are used It is done.
- the pressure-sensitive adhesive layer includes a non-hydrophilic pressure-sensitive adhesive layer composed of the non-hydrophilic pressure-sensitive adhesive and a non-hydrophilic pressure-sensitive adhesive layer composed of the non-hydrophilic pressure-sensitive 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.
- hydrophilic adhesive is provided on the thermal package for the joint periphery. After the sealing process of the thermal package for the joint periphery, a hydrophilic adhesive layer is provided on the thermal package for the joint periphery. Also good.
- 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.
- a pressure-sensitive adhesive layer in which the pressure-sensitive adhesive is partially present and there is a portion in which the pressure-sensitive adhesive is not present partially and the entire region is breathable can be given as an example.
- 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 zigzag while drawing a circle in the shape of a thread.
- Examples include a method in which the gap between the thread-like adhesives has air permeability or moisture permeability, a method of foaming the adhesive, or a layer formed by a melt blow method.
- Adhesives that make up the non-hydrophilic pressure-sensitive adhesive layer are acrylic pressure-sensitive adhesives, vinyl acetate-based pressure-sensitive adhesives (bulb acetate-based resin emulsion, ethylene-bulb-based resin melt hot melt pressure-sensitive adhesives), polyvinyl alcohol-based pressure-sensitive adhesives, polyvinyl Acetal adhesive, vinyl chloride adhesive, polyamide adhesive, polyethylene adhesive, cellulose adhesive, black mouth prene (neoprene) adhesive, nitrile rubber adhesive, polysulfide adhesive, ptyl rubber
- the adhesive include a silicone adhesive, a silicone rubber adhesive, a styrene adhesive (for example, a styrene hot melt adhesive), a rubber adhesive, and a silicone adhesive. This Among them, rubber adhesives, acrylic adhesives or hot-melt adhesives are high because of their high adhesive strength, low cost, good long-term stability, and little decrease in adhesive strength even when heated. Adhesives containing child substances are desirable.
- 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.
- Oil tackifiers such as petroleum spheroids represented by alicyclic petroleum resins such as fats, and phenol tackifiers such as terpene phenolic rosins, rosin phenolic rosins, alkylphenolic terrestrial resins (especially -Tackifiers with a phosphorus point of 50 ° C or lower), coconut oil, castor oil, olive oil, camellia oil, liquid paraffin and other softeners, softeners, anti-aging agents, fillers, aggregates, adhesion regulators, Adhesion improvers, colorants, antifoaming agents, thickeners, modifiers and the like may be added as appropriate to improve performance such as improving the adhesion to nylon clothing and blended fabric clothing.
- hot melt pressure-sensitive adhesive examples include known hot-melt pressure-sensitive adhesives that have been given tackiness.
- BB A-type block co-polymers such as SIS, SBS, SEBS, or SIPS can be used.
- Styrenic adhesives based on polymers chlorinated adhesives based on salt-bulb resin, polyester adhesives based on polyester, polyamide adhesives based on polyamide , Acrylic adhesives based on acrylic resin based on acrylic resin, polyolefin adhesives based on polyolefins such as polyethylene, ultra-low density polyethylene, polypropylene, ethylene ⁇ -olefin, and ethylene acetate butyl copolymer, 1 , 2—Polybutadiene-based polymer 1, 2-polybutadiene adhesive or polyurethane Polyurethane adhesives shall be the base polymer Tan, or adhesion improvement and also stability of these modified products force for changing an adhesive, or a mixture of two or more of these adhesives and the like. Moreover, an adhesive layer composed of a foamed adhesive or an adhesive layer composed of a crosslinked adhesive can also be used.
- the non-aromatic hot-melt pressure-sensitive adhesive is not particularly limited as long as the base polymer does not contain an aromatic ring.
- olefin-based hot melt adhesives include acrylic hot melt adhesives. Does not contain aromatic rings
- Non-aromatic polymers that are polymers include polymers such as olefins and gens.
- One example is an olefin polymer.
- the olefin-based polymer is a polymer or copolymer of ethylene or ⁇ -olefin.
- other monomers such as butadiene and isoprene, may be added.
- ⁇ -olefin examples include, but are not limited to, propylene, butene, heptene, hexene, otaten and the like as long as the monomer has a double bond at the terminal.
- Aromatic hot melt adhesives are hot melt adhesives whose base polymer contains an aromatic ring, such as styrene hot melt adhesives such as ⁇ - ⁇ - ⁇ block copolymers. Is given as an example.
- the A block is a monovinyl-substituted aromatic compound A such as styrene or methylstyrene, which is an inelastic polymer block
- the B block is a conjugate of conjugated gen such as butane or isoprene.
- conjugated gen such as butane or isoprene.
- SBS styrene butadiene styrene block copolymer
- SIS styrene isoprene styrene block copolymer
- SEBS hydrogenated types
- 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 constituting the hydrophilic pressure-sensitive adhesive is not particularly limited as long as the main component is a hydrophilic polymer or a water-soluble polymer and has adhesiveness, and the pressure-sensitive adhesive is hydrophilic.
- Components of the agent include hydrophilic polymers such as polyacrylic acid, water-soluble polymers such as sodium polyacrylate and polyvinylpyrrolidone, cross-linking agents such as dry aluminum hydroxide metal metasilicate aluminate metal salt, glycerin And softeners such as propylene glycol, primary hydrocarbon fatty acid esters such as light liquid paraffin and polybutene, primary alcohol fatty acid esters such as isopropyl myristate, silicone oil, and fatty acid glycerin esters such as monoglyceride , Oily components such as olive oil and vegetable oils, methyl noroxybenzoate and paraoxybenzoate Preservatives such as propyl perfate, solubilizers such as N-methyl
- the temporary sealing part is formed through an adhesive layer, but the adhesive constituting the adhesive layer is a layer formed of a polymer composition having tack at normal temperature, and it is limited if heat sealing can be performed after temporary attachment. Not sure.
- the adhesive of the said adhesive layer can be used for the adhesive which comprises the adhesive layer used for temporary attachment.
- a non-hydrophilic adhesive is preferred.
- the adhesive constituting the adhesive layer preferably has a melting point of the base polymer of the adhesive that has good compatibility with the heat seal material constituting the heat seal, and is lower than the melting point of the heat seal material.
- a hot-melt adhesive is preferable for the hot-melt adhesive.
- the heat seal material is an olefin-based material
- an olefin-based pressure-sensitive adhesive is preferred as an example of the pressure-sensitive adhesive.
- the adhesive layer for fixing the air flow adjusting material is composed of a commonly used adhesive or pressure-sensitive adhesive.
- the pressure-sensitive adhesive is useful, and the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer can be used.
- the method of providing the adhesive layer may be provided on the entire surface as long as the air flow adjusting material 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 are listed as examples.
- the adhesive layer is a hydrophilic adhesive layer
- 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.
- the packaging material interposed between them preferably has a moisture permeability of at least 2 g / m 2 / day in terms of moisture permeability according to the Lissy method (Lyssy method).
- 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 the range that does not affect the heat generation performance.
- the moisture permeability by Ritsushi one method usually, it is 2gZm 2 Zday less, preferably not more than 1. 0gZm 2 Zday, more preferably 0. 5GZm 2 Zday or less, and more preferably 0.01 to 0.5 gZm 2 Zday.
- 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.
- the moisture-proof packaging material is not limited as long as moisture transfer between the exothermic composition molded body and the hydrophilic pressure-sensitive adhesive layer can be prevented.
- Non-breathable packaging material flexible plastic made by vacuum deposition or sputtering of metal such as aluminum foil on a polyester film base film, metal foil such as aluminum foil, and polyester film substrate Laminate for packaging using a transparent barrier film with a structure in which silicon oxide and aluminum oxide are provided on the base material
- metal such as aluminum foil
- metal foil such as aluminum foil
- polyester film substrate Laminate for packaging using a transparent barrier film with a structure in which silicon oxide and aluminum oxide are provided on the base material
- a non-breathable packaging material used for the outer bag or the like can also be used.
- 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.
- 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.
- the water-absorbing polymer, etc. in the range of 10 to 40% by weight, preferably 15 to 40% by weight, more preferably 15 to 30% by weight of the exothermic composition. You can adjust the weight percentage range!
- 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 to be included in 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, fat decomposition component, negative ion generator, far-infrared radiator, magnetic substance, poultice, cosmetics, bamboo vinegar Alternatively, at least one selected from wood vinegar and the like can be cited as an example.
- 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.
- 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 viewpoints of pharmacological effect, economic efficiency, adhesive strength, and the like. Preferably, 0.01 to 25 parts by weight, more preferably 100 parts by weight of the agent
- the method for providing the adhesive layer may be provided on the entire surface as long as the thermal package for the joint periphery can be fixed, or may be provided partially or intermittently.
- Mesh, stripe Examples include various shapes such as a dot shape and a belt shape.
- the base material, covering material, pressure-sensitive adhesive layer, and separator constituting the heating element at least one or a part thereof is a character, a pattern, a symbol, a number, a pattern, a photograph, a picture, or a colored portion. You can have more than one kind of displacement force!
- the covering material, the pressure-sensitive adhesive layer, and the separator constituting the heating element each may be any of transparent, opaque, colored, uncolored, and the like.
- at least one of the layers constituting each material and each layer may have a colored portion colored in a different color from the other layers.
- the heating element of the present invention can be obtained in various shapes, thicknesses, and temperature zones, outside of normal body warming, for warmth, for footwear and other footwear, for joints, for face, for eyes, for heat Various applications such as poultry, drug warmers, neck, waist, mask, gloves, heels, shoulders, cushions, fragrances, abdomen, transpiration insecticide, oxygen absorption, cancer treatment, and pets It can be used for heat insulation of machinery and machinery.
- the heating element is applied to a body part having pain in a person who needs treatment, and the temperature of the skin and the maintenance time are required to be treated. Treating acute, recurrent, chronic, muscular pain, skeletal pain, or related pain caused by human choice, comfortably and substantially relieving pain An example of use is given as an example.
- the method of manufacturing the heating element is not limited, but the following manufacturing method is an example.
- a bag body is formed by bonding 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. How to wear.
- an appropriate method such as an adhesive, sewing, heat sealing method, etc.
- thermocompression bonding using a long base material and a rotary thermocompression bonding machine capable of heat-sealing the target partition portion and the peripheral edge of the base material is used.
- a continuous forming method for starting the formation of the chamber for example, a continuous forming method for starting the formation of the chamber.
- a pocket is previously formed in a base material by thermoforming, mechanical embossing, vacuum embossing or other acceptable means, and the heating composition and This is a method for manufacturing a heating element by filling the compressed body and the like, covering the pocket with another base material, and bonding the periphery of the two base materials.
- a mold-forming exothermic composition is formed into a desired shape by a mold-through molding method using a punching die or a mold-in molding method using a punching die, and a substantially flat base having no storage pocket is formed.
- This is a method for producing a heating element by laminating the molded body on a material or the like, covering with another base material, and sealing.
- 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.
- 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.
- 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.
- a molding machine for laminating the exothermic composition molded body on a long base material by covering the recess with a drum-shaped rotating body and transferring it to the base material, and covering it with a long covering material
- a rotary sealer that can seal the target section and the periphery of the base material and coating material (heat seal, crimp seal, thermocompression seal, etc.)
- heat generation composition through the seal
- a continuous forming method in which the necessary portions of the edge and the section of the molded article are heat-sealed and sealed.
- a magnet may be used for producing a heating element using the exothermic composition of the present invention using the above method and other methods.
- the exothermic composition can be stored in a bag or mold, and the molded body can be easily detached from the mold. The body is easier to manufacture.
- the air flow adjusting material is composed of a divided heat generating portion and a divided portion, and covers the heat generating portion having a height difference via an adhesive layer, etc., and adjusts the air permeability to the divided heat generating portion.
- the air flow adjusting material is a space that is partitioned into at least a part of the peripheral edge of the section heat generating section by covering the heat generating section with the air flow adjusting material using the difference in height between the section heat generating section and the section section. And adjusts the air permeability between the outside and the divided heat generating part, and also provides a heat retaining effect.
- the air permeability of the air conditioning material is not limited as long as at least a part of the peripheral edge of the segmented heat generating part can retain air or adjust air flow. It is preferable to lower than the breathability of the surface.
- a region having higher air permeability than the air permeability of the covering portion covering the heat generating composition molded body is provided by perforation or the like, and the other regions have air permeability of the ventilation surface of the segmented heat generating portion.
- the air permeability may be kept lower. As a result, the air passage such as air can be controlled.
- the material used for the air conditioning material may be a material used for a packaging material used in a non-breathable storage bag for hermetically storing a chemical warmer, a base material of a heating element, a covering material, and a heating element.
- the adhesive used for chemical warmers and heating elements is preferred.
- the heating element of the present invention can be obtained in various shapes, thicknesses, and temperature zones, it is not only for normal body warming, but also for joints, facial use, eyes, slimming, drip solution heating / warming ,
- thermal compresses for drug warmers, for neck, for waist, for masks, for gloves, for heels, or for alleviating symptoms such as shoulder pain, muscle pain, or physical pain, for cushions, or during the operation
- It can be used for various purposes such as warming and warming, heating sheet, transpiration, aroma, abdomen, transpiration insecticide, and cancer treatment.
- machines can be used for warming and warming pets.
- the heating element of the present invention when used for symptom relief, is applied directly to a necessary part of the body or indirectly through a cloth or the like. In addition, when using it for warming the human body during surgery,
- a heating element Directly apply a heating element to a body that requires warming / warming 2. Fix the heating element to a cover, etc., and apply it to the body 3. Fix the heating element to a rug laid under the body 4. Preheat Examples of usage include use as a cover or rug as a product with a body. Examples of muscle and skeletal pain include acute muscle pain, acute skeletal pain, acute related pain, past muscle pain, past skeletal pain, chronic related pain, joint pain such as knee and elbow, and the like.
- the maintenance time is not limited, but is preferably 20 seconds to 24 hours, more preferably 1 hour to 24 hours, and still more preferably 8 hours to 24 hours.
- the maintenance temperature is preferably 30 to 50 ° C, more preferably 32 to 50 ° C, still more preferably 32 to 43 ° C, still more preferably 32 to 41 ° C, and further Preferably, it is 32 to 39 ° C.
- FIG. 1 Plan view of an embodiment of the heating element of the present invention.
- FIG. 5 is a sectional view of another embodiment of the heating element of the present invention.
- FIG. 6 is a sectional view of another embodiment of the heating element of the present invention.
- FIG. 7 is a perspective view of another embodiment of the heating element of the present invention.
- FIG. 8 is a plan view of another embodiment of the heating element of the present invention.
- FIG. 9 is a plan view of another embodiment of the heating element of the present invention.
- FIG. 10 is a schematic view of through-molding using a scuff plate of the heating element of the present invention.
- FIG. 12 is a schematic view of through-molding using an indented scraping plate of the heating element of the present invention.
- FIG. 13 is a plan view of the filter paper for measuring the mobile water value of the present invention.
- FIG. 14 is a perspective view for explaining easy water measurement according to the present invention.
- Non-water absorbent film polyethylene film, etc.
- a batch type oxidizing gas contact treatment device with stirring which is a mixer equipped with a rotating blade for stirring, was used as the acidic gas contact treatment device, and air was used as the oxidizing gas.
- a reaction mixture consisting of 100 parts by weight of reduced iron powder (particle size of 300 m or less), activated carbon (particle size of 300 m or less), 3.5 parts by weight, and 5 parts by weight of 11% saline, with a mobile water value of less than 0.01. It was placed in a batch type oxidizing gas contact treatment apparatus with stirring.
- the upper part of the acidic gas contact treatment device is open, and in a state of being opened in the air, it is self-heated while stirring, and reaches 30 ° C after 20 seconds.
- the reaction mixture was sealed in a non-breathable storage bag and allowed to stand at room temperature to obtain an exothermic mixture of the present invention.
- Example 2 The same reaction mixture as in Example 1 was not subjected to the oxidizing gas contact treatment, and 11% by weight of saline was added to the reaction mixture to obtain an exothermic composition having a mobile water value of 8. A heating element was obtained in the same manner as in Example 1 using the exothermic composition.
- Example 1 The exothermic compositions of Example 1 and Comparative Example 1 were subjected to an exothermic composition exothermic test.
- Example 1 The exothermic composition of Example 1 was about 35 ° C. after 1 minute and about 55 ° C. (average of 5) after 3 minutes.
- Comparative Example 1 The exothermic composition of Comparative Example 1 was 23 ° C after 1 minute, the temperature after 3 minutes was 28 ° C (average of 5 pieces), and Comparative Example 1 had a significantly higher heating rate than Example 1. I was slow.
- a batch type oxidizing gas contact treatment device with stirring which is a mixer equipped with a rotating blade for stirring, was used as the acidic gas contact treatment device, and air was used as the oxidizing gas.
- Iron powder particle size 300 m or less
- activated carbon particle size 300 m or less
- wood powder particle size 150 m or less
- water-absorbing polymer particle size 300 m or less
- 0.5 parts by weight of slaked lime 0.7 parts by weight of sodium sulfite, and 10 parts by weight of 11% saline solution. It was put in the gas contact processing device.
- the upper part of the oxidizing gas contact treatment device is open, and is self-heated while stirring in the air, and when it reaches 27 ° C in 20 seconds. Then, the contact-treated reaction mixture was sealed in a non-breathable storage bag and allowed to stand at room temperature to obtain an exothermic mixture of the present invention.
- a non-breathable base material 3 in which an adhesive layer 3B and a separator 3C are provided on a polyethylene film 3A is used, and on the polyethylene film 3A side, Using a punching die having a thickness of 2 mm, a heat generating composition molded body 2 having a rectangular shape with a plane of 2 mm thickness, 115 mm length, and 80 mm width was molded and laminated on the substrate 3. Furthermore, a breathable packaging material in which a nonwoven fabric 4A made of nylon and a polyethylene porous film 4B are laminated thereon is used as the covering material 4 so that the polyethylene film surface 3A and the porous film 4B surface are in contact with each other.
- the air permeability of the coating material 4 was 370 gZm 2 Z24hr in terms of moisture permeability according to the Risch method.
- the heating element was sealed and stored in a non-breathable outer bag and left at room temperature for 24 hours. A physical fever test was conducted, but after 3 minutes it felt warm and warmed for more than 10 hours.
- Example 2 The same reaction mixture as in Example 2 was not subjected to the oxidizing gas contact treatment, and 11% by weight of saline was added to the reaction mixture to obtain an exothermic composition having a mobile water value of 8.
- the exothermic test of the exothermic composition was performed, the same result as in Comparative Example 1 was obtained. Further, a heating element was obtained in the same manner as in Example 2 using the exothermic composition.
- FIG. 5 is a cross-sectional view of a heating element 1 in which the base material 3 of Example 2 is replaced with the base material 3 having the SIS pressure-sensitive adhesive layer 7 with the separator 9.
- FIG. 6 is a cross-sectional view of a heating element 1 in which the base material of Example 2 is replaced with a base material 3 having a hydrophilic adhesive layer 8 with a separator 9.
- the hydrophilic pressure-sensitive adhesive constituting the hydrophilic pressure-sensitive adhesive layer is 4.5% by weight of polyacrylic acid, 1.5% by weight of sodium polyacrylate, 4.0 parts by weight of sodium saccharium, glycerol 15. 0 weight 0/0, propylene glycol 5.0 wt 0/0, sorbitol 10.0 wt 0/0, aluminum hydroxide 0.1 weight 0/0, synthetic hydrotalcite 0.05 wt% of polyoxyethylene glycol 1. 0% by weight, others are hydrodynamic compositions.
- FIG. 7 shows an example in which the display 10 is provided on the heating element 1.
- Example 1 In the exothermic mixture obtained in Example 1, in terms of the reaction mixture, 100 parts by weight of iron powder, water-absorbing polymer (particle size 300 ⁇ m or less) 2.3 parts by weight, wood powder (particle size 300 ⁇ m or less) ) 2.3 parts by weight, 0.7 parts by weight of sodium sulfite, calcium hydroxide (particle size 300 m or less) 0.2 parts by weight of the mixture was added, and after mixing, 30 parts by weight of 11% saline was added. Add and mix further A thermal composition was obtained. The mobile water value was less than 0.01.
- the temperature measurement result was about 50 ° C. (average of 5 pieces) after 3 minutes as in Example 1.
- a moldability test of the exothermic composition was performed, and even when the punching die was separated from the exothermic composition molded body, the exothermic composition molded body did not lose its shape. The composition molded body also had a force that did not cause collapsed pieces.
- a breathable packaging material in which plastic polyethylene film 4B is laminated in that order as covering material 4 a packaging material piece of length 135mm x width 100mm was made from each, and the seal width was 8mm.
- a shaped breathable flat storage bag was created.
- the flat storage bag was filled with 25 g of the above heat generating composition, and the sides that were not heat-sealed were heat-sealed to produce a rectangular flat heat-generating body 1 having a length of 135 mm, a width of 100 mm, and a seal width of 8 mm. did.
- the air permeability of the coating material 4 was 370 gZm 2 Z24hr in terms of moisture permeability according to the Risch method.
- the heating element was sealed and stored in a non-breathable outer bag and left at room temperature for 24 hours.
- the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and subjected to a heating test.
- the temperature after 30 minutes was 50 ° C, and the temperature above 40 ° C lasted for more than 10 hours.
- the temperature measurement result was about 49 ° C (average of 5) after 3 minutes.
- Example 3 Using the same base material and coating material as in Example 3, a rectangular exothermic composition molded body having a length of 125 mm and a width of 90 mm was molded and laminated on the base material by mold-through molding. Next, a breathable coating material was applied and the periphery of the exothermic composition molded body was heat-sealed to produce a rectangular heating element having a seal width of 8 mm, a length of 135 mm, and a width of 100 mm.
- the heating element was sealed and stored in a non-breathable outer bag and left at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and subjected to a heating test. The temperature after 30 minutes was 52 ° C, and the temperature above 40 ° C lasted for more than 10 hours.
- Example 3 25 g of the exothermic composition prepared in Example 3 was stored in an air-permeable storage bag with an adhesive layer protected by a separator, and the periphery of the heating element was sealed with a seal width of 8 mm, measuring 130 mm in length and 80 mm in width. A rectangular flat heating element was created and enclosed in a non-breathable outer bag. The breathability of the vent of the breathable storage bag was 400gZm 2 Z24hr in terms of the moisture permeability of the Rissi method.
- Iron powder 100 parts, activated carbon (particle size 300 m or less) 6.5 parts, water-absorbing polymer (particle size 300 m or less) 3 parts, slaked lime 0.5 part, sodium sulfite 0.7
- the reaction mixture in a 30 ° C. environment having a mobile water value of less than 0.01 and consisting of 10 parts by weight of 11% saline was placed in a batch type oxidizing gas contact treatment apparatus with stirring.
- the temperature of the reaction mixture at the time of charging was 20 ° C.
- Example 5 A heating element was prepared in the same manner as in Example 6 and a heat generation test was performed. The same result as in Example 5 was obtained.
- a batch-type oxidizing gas contact treatment device with stirring and a mixer equipped with a rotating blade for stirring is used as an oxygen-containing gas contact treatment device, and air is used as the oxidizing gas.
- Polymer particle size 300 / zm or less
- Polymer particle size 300 / zm or less
- 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, 10 parts by weight of 8% saline, exothermic mixture with a mobile water value of less than 0.01 Was filled into a contact processing device container.
- the upper part of the contact treatment device container is open, and is self-heated while stirring in an open state in the air.
- 8% Saline was added, and the mixture was stirred for 15 seconds to obtain an exothermic composition having a mobile water value of 8.
- a breathable packaging material in which a nonwoven fabric 4A made of nylon and a porous film 4B made of polyethylene are laminated is used as the covering material 4 so that the polyethylene film surface and the porous film surface are in contact with each other.
- a heating element 1 consisting of 1B and having an outer dimension of 131 mm X 101 mm was prepared (Fig. 8).
- the sealing part could be perfectly performed without mixing the collapsed pieces of the exothermic composition molded body into the seal part, and it was possible to produce a seal failure.
- the moldability was good.
- the air permeability of the covering material 4 was 370 gZm 2 Z24hr in terms of moisture permeability according to the Risch method.
- the heating element 1 was sealed and stored in a non-breathable outer bag and left at room temperature for 24 hours. After 24 hours, the heating element was taken out of the outer bag and subjected to a body heating test. In 3 minutes, it felt warm and the heat retention time at 34 ° C or higher was 8.5 hours. The flexibility of the heating element was maintained before and after use.
- the pressure-sensitive adhesive layer under the section 6 of this heating element is weaker than the pressure-sensitive adhesive layer under the section heating section 1B.
- Fig. 9 is an example in which the seal portion 6 is a concavo-convex pattern seal and the seal portion is provided with a perforation 7 that can be cut by hand
- Example 3 In the same manner as described in Example 3, except that the moisture adjustment was changed, an exothermic composition having a mobile water value of 25 was obtained. Further, the moldability of the exothermic composition was measured by the method for measuring moldability, but it was a exothermic composition having moldability with no collapsed pieces of the exothermic molded product.
- a non-breathable packaging material in which a non-breathable polyethylene film of 40 ⁇ m thickness is bonded to one side of a liner paper (thickness 300 ⁇ m) is placed on the liner paper of the base material.
- the exothermic composition was molded and laminated by mold forming using a punch having a rectangular punch hole with a thickness of 2 mm, a length of 120 mm, and a width of 84 mm to obtain a exothermic composition molded body.
- Exothermic composition There was no broken piece of the exothermic composition molded body at the periphery of the molded body, and the moldability was good.
- a coating material provided with a network-like pressure-sensitive adhesive layer provided on the polyethylene porous film side, on which a styrene-isoprene-styrene block copolymer-based adhesive polymer is provided in a network by a melt blow method is provided.
- the layer surface and the exothermic composition molded body are overlapped so that they are in contact with each other, and the periphery of the exothermic composition molded body is sealed with a pressure-bonding seal, the periphery is cut, the length is 136 mm, the width is 100 mm, the seal width An 8 mm rectangular flat heating element was manufactured, sealed in an outer bag which is a non-breathable storage bag, and allowed to stand for 24 hours.
- a kraft paper having a thickness of 30 ⁇ m, a porous film made of polyethylene having a thickness of 50 ⁇ m, and a nylon nonwoven fabric having a thickness of 150 m were laminated in this order.
- the reticulated adhesive layer was provided on kraft paper.
- the air permeability of the coating material was 650 gZm so 24 hr in terms of moisture permeability according to the Lissi method.
- FIG. 10 shows an example of a die-through molding method using the scraping plate 15.
- a roll film substrate 3 having a width of 130 mm is combined with a molding die 12 having a thickness of 1 mm and a desired shape removed at the center of the die, and a die 11 is arranged on the upper surface and a magnet 13 is arranged on the lower surface. So that they are fed horizontally at a predetermined speed.
- the embodiment 5 The thermal composition 2 is fed into the mold hole 12a through the hole 11a of the die 11.
- the exothermic composition 2B is scraped flush with the mold 12 by a scraping plate 15 placed in the front in the running direction, and is stored in the mold hole 12a, and a 1.5 mm thick shape is formed on the base 3 Is done. Thereafter, the mold 12 is removed, and the exothermic composition molded body laminated on the substrate 3 is obtained.
- a styrene-isoprene-styrene block copolymer (SIS) -based adhesive polymer is provided on the surface of the exothermic composition molded body in a net shape by a melt blow method, and a covering material is covered,
- a heating element having a desired shape can be obtained by sealing the peripheral edge of the heat-generating composition molded body by heat sealing and cutting it into a desired shape. Further, the cut heating element is subsequently sent to the packaging process and enclosed in an airtight outer bag. Further, the same molding is possible even if the above-mentioned scraping plate is replaced with a push-off scraping plate.
- FIG. 11 shows the fraying plate 15 and FIG. 12 shows the indenting fraying plate 15A.
- the tip portion of the indentation and scraping plate may be trimmed to be rounded, that is, rounded.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002573272A CA2573272A1 (en) | 2004-07-14 | 2005-07-14 | Process for producing heat generating mixture, heat generating mixture, heat generating composition, and heat generating body |
US11/632,124 US20080283036A1 (en) | 2004-07-14 | 2005-07-14 | Process for Producing Heat Generating Mixture, Heat Generating Mixture, Heat Generating Composition, and Heat Generating Body |
JP2006529112A JPWO2006006645A1 (ja) | 2004-07-14 | 2005-07-14 | 発熱混合物の製造方法、発熱混合物、発熱組成物及び発熱体 |
EP05765809A EP1782780A4 (en) | 2004-07-14 | 2005-07-14 | PROCESS FOR PREPARING AN EXOTHERMIC MIXTURE, EXOTHERMIC MIXTURE, EXOTHERMIC COMPOSITION AND EXOTHERMIC ARTICLES |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004207826 | 2004-07-14 | ||
JP2004-207826 | 2004-07-14 |
Publications (1)
Publication Number | Publication Date |
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WO2006006645A1 true WO2006006645A1 (ja) | 2006-01-19 |
Family
ID=35783981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/012998 WO2006006645A1 (ja) | 2004-07-14 | 2005-07-14 | 発熱混合物の製造方法、発熱混合物、発熱組成物及び発熱体 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080283036A1 (ja) |
EP (1) | EP1782780A4 (ja) |
JP (1) | JPWO2006006645A1 (ja) |
CA (1) | CA2573272A1 (ja) |
WO (1) | WO2006006645A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0268578A2 (en) | 1983-06-30 | 1988-05-25 | E.B. Eddy Forest Products Limited | Improvements in air conveyor components |
CN105662845A (zh) * | 2016-03-30 | 2016-06-15 | 青岛明药堂医疗股份有限公司 | 一种艾灸热磁理疗贴 |
CN110101502A (zh) * | 2019-05-30 | 2019-08-09 | 湖北普爱药业有限公司 | 一种透气均匀的发热包 |
JP2020514431A (ja) * | 2016-12-13 | 2020-05-21 | フォエバー ヤング インターナショナル、 インク. | 発熱性の膨張性組成物 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9193588B2 (en) * | 2006-02-01 | 2015-11-24 | Tilak Bommaraju | Hydrogen elimination and thermal energy generation in water-activated chemical heaters |
CA2751675A1 (en) * | 2009-01-07 | 2010-07-15 | University Of South Florida | Sustained modulation of temperature of self heating chemical system |
EP3639918B1 (en) * | 2009-07-26 | 2024-09-04 | Forever Young International, Inc. | Expandable exothermic gel-forming composition |
CN102946832B (zh) * | 2010-06-18 | 2015-08-19 | 花王株式会社 | 发热器 |
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- 2005-07-14 EP EP05765809A patent/EP1782780A4/en not_active Withdrawn
- 2005-07-14 WO PCT/JP2005/012998 patent/WO2006006645A1/ja active Application Filing
- 2005-07-14 JP JP2006529112A patent/JPWO2006006645A1/ja active Pending
- 2005-07-14 CA CA002573272A patent/CA2573272A1/en not_active Abandoned
- 2005-07-14 US US11/632,124 patent/US20080283036A1/en not_active Abandoned
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EP0268578A2 (en) | 1983-06-30 | 1988-05-25 | E.B. Eddy Forest Products Limited | Improvements in air conveyor components |
CN105662845A (zh) * | 2016-03-30 | 2016-06-15 | 青岛明药堂医疗股份有限公司 | 一种艾灸热磁理疗贴 |
JP2020514431A (ja) * | 2016-12-13 | 2020-05-21 | フォエバー ヤング インターナショナル、 インク. | 発熱性の膨張性組成物 |
JP7291625B2 (ja) | 2016-12-13 | 2023-06-15 | フォエバー ヤング インターナショナル、 インク. | 発熱性の膨張性組成物 |
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Also Published As
Publication number | Publication date |
---|---|
CA2573272A1 (en) | 2006-01-19 |
US20080283036A1 (en) | 2008-11-20 |
JPWO2006006645A1 (ja) | 2008-05-01 |
EP1782780A4 (en) | 2009-01-14 |
EP1782780A1 (en) | 2007-05-09 |
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