WO2016159225A1 - 発熱具 - Google Patents
発熱具 Download PDFInfo
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- WO2016159225A1 WO2016159225A1 PCT/JP2016/060639 JP2016060639W WO2016159225A1 WO 2016159225 A1 WO2016159225 A1 WO 2016159225A1 JP 2016060639 W JP2016060639 W JP 2016060639W WO 2016159225 A1 WO2016159225 A1 WO 2016159225A1
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- Prior art keywords
- packaging material
- ventilation
- region
- heating tool
- heating
- Prior art date
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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
-
- 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
-
- 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
-
- 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
- A61F2007/0203—Cataplasms, poultices or compresses, characterised by their contents; Bags therefor
- A61F2007/022—Bags therefor
- A61F2007/0222—Bags therefor made of synthetics, e.g. plastics
-
- 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
- A61F2007/0203—Cataplasms, poultices or compresses, characterised by their contents; Bags therefor
- A61F2007/022—Bags therefor
- A61F2007/0223—Bags therefor made of textiles
-
- 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
- A61F2007/0244—Compresses or poultices for effecting heating or cooling with layers
- A61F2007/0257—Compresses or poultices for effecting heating or cooling with layers with a fluid impermeable layer
-
- 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
- A61F2007/0244—Compresses or poultices for effecting heating or cooling with layers
- A61F2007/0258—Compresses or poultices for effecting heating or cooling with layers with a fluid permeable layer
Definitions
- the present invention relates to a heating tool using an exothermic reaction between oxidizable metal powder and air.
- a heating tool that uses an exothermic reaction between oxidizable metal powder and air is a device for warming up, from the point of being disposable and convenient to carry. Is preferred.
- a general heating device is a resin film, non-woven fabric, paper bag, etc. made of a mixture of oxidizable metal powder (iron powder), wood chips, vermiculite, water-absorbing polymer, activated carbon, salts, and water. It is enclosed in a wrapping material.
- Patent Document 1 describes that the rising time of heat generation can be shortened by providing a left and right ventilation region on one side of the packaging material of the heating tool.
- Patent Document 2 a sheet for blocking air is provided on the surface of the packaging material where the entire surface of the heating tool is a ventilation region, and the sheet is arbitrarily peeled to adjust the area of the ventilation region. It is described that the fever duration can be adjusted.
- heating tools When used in sports or work outdoors in winter, or when used in cold regions, heating tools that have higher temperatures tend to be preferred. There is also a demand for a product that can be warmed for a long time.
- the heating tool marketed as a high temperature type does not have a long time for maintaining a high temperature state while achieving a maximum temperature of 60 ° C. or higher.
- the form of the packaging material of the heating tool is devised as described above, none of them can realize high temperature and high temperature sustainability. In particular, if the ambient temperature is low, the heat generation performance of the heating tool will be reduced accordingly. Therefore, in a low temperature environment, unless the evaluation according to JIS standard S4100 shows high temperature and high temperature maintenance, it cannot withstand actual use.
- an object of the present invention is to provide a heating tool that becomes high in use and maintains a high temperature state for a long time.
- an object of the present invention is to provide a heating tool that can obtain a sufficient warm feeling for a long time even in a low temperature environment.
- the present inventor has achieved both high temperature and high temperature sustainability by providing a ventilation region and a non-venting region on both sides of a flat heating device, respectively.
- the present invention has been completed by finding out what can be done.
- a heating tool including a heating agent and a packaging material enclosing the heating agent, wherein the packaging material has a flat bag shape including a first surface and a second surface, and the first surface and the second surface.
- the heating tool wherein each surface has a ventilation region and a non-venting region.
- the heating tool according to [1] or [2], wherein the ventilation region has a strip shape extending in a longitudinal direction or a short direction of the packaging material.
- a heating tool including a heating agent and a packaging material that encloses the heating agent, wherein the packaging material has a flat bag shape including a first surface and a second surface, and the first surface and the second surface. Each of the surfaces has a ventilation region and a non-venting region, and the ventilation region of the first surface and the ventilation region of the second surface are continuously present across the long side or the short side of the packaging material, Fever tool.
- each of the first surface and the second surface has two ventilation regions.
- a heating tool that becomes hot during use and maintains a high temperature state for a long time.
- Such a heating tool is suitable for use in a low temperature environment such as outdoors in winter or in a cold region, or for users who require higher temperatures.
- Line AB represents the center line in the short direction
- line CD represents the center line in the long direction.
- A shows the appearance of the first surface
- (b) shows the appearance of the second surface.
- A is sectional drawing in line AB of FIG.
- (a) to (d) correspond to the heating tools of Examples 1 to 4, respectively, and (e) corresponds to the heating tool of Comparative Example 1.
- Point E represents the position of the center line in the longitudinal direction. It is a figure showing the one aspect
- Line AB represents the center line in the short direction
- line CD represents the center line in the long direction.
- (A) shows the appearance of the first surface
- (b) shows the appearance of the second surface. It is a figure showing the cross section of the transversal direction of a heating tool. Note that the bonding region is omitted.
- (A) is sectional drawing in line AB of FIG. Further, (a) corresponds to the heating tool of Example 5, and (b) corresponds to the heating tools of Comparative Examples 2 and 3.
- Point E represents the position of the center line in the longitudinal direction. It is a graph showing the temperature characteristic of the heating tool of Example 1 and 2.
- 4 is a graph showing temperature characteristics of heating tools of Examples 1, 3, 4 and Comparative Example 1. It is a graph showing the temperature characteristic of the heating tool of Example 5 and Comparative Examples 2 and 3. It is a graph showing the temperature characteristic in the low temperature environment (0 degreeC) of the heating tool of Examples 1, 4 and Comparative Example 1.
- the heating tool of the present invention is a heating tool that includes a heating agent and a packaging material that encloses the heating agent, and can be used as a disposable body warmer to impart heat to a human body or other objects.
- the packaging material in the present invention has a flat bag shape composed of a first surface and a second surface.
- a 1st surface and a 2nd surface point out one substantially plane of the packaging material which is a flat bag shape, and the other substantially plane.
- the case where the first surface and the second surface are formed of the same (continuous) packaging material member or a plurality of members is included in the present invention.
- the shape of the heating tool of the present invention is not particularly limited, it is usually substantially rectangular.
- the size is not particularly limited.
- the longitudinal direction is 50 to 150 mm
- the lateral direction is 40 to 140 mm
- the thickness is 2 to 15 mm in a state where the heating agent is present in the packaging material without unevenness. It is preferable because it is easy to fit in the palm or pocket.
- the first surface and the second surface of the packaging material in the present invention each have a ventilation region and a non-venting region.
- the ventilation region has one or more locations on the first surface and the second surface respectively, but preferably has one location each.
- the ratio of the total area of the ventilation regions and the total area of the non-ventilation regions on each surface is not particularly limited, but is preferably 1: 5 to 1: 1, more preferably 1: 4 to 1: 2. preferable. By setting it in the above range, the heating tool can easily reach a high temperature state and can easily maintain the high temperature state.
- the ventilation region refers to a region through which air can pass from the outside to the inside of the packaging material
- the non-venting region refers to a region that blocks air between the outside and the inside of the packaging material.
- the ventilation region is formed by a plurality of small holes penetrating the packaging material.
- the small hole has a size that does not allow the heat generating agent inside the packaging material to pass through, and is not particularly limited, but is, for example, ⁇ 0.01 to 0.5 mm.
- the shape is not particularly limited.
- the ventilation region includes 1 to 15, preferably 3 to 15, more preferably a small hole array in which the small holes are provided at regular intervals along the longitudinal direction or the short direction of the packaging material.
- the interval between the small holes in one small hole row is not particularly limited, but is preferably 1 to 6 mm, and more preferably 2 to 4 mm.
- the interval between the small hole rows is not particularly limited, but is preferably 1 to 6 mm, and more preferably 2 to 4 mm.
- the width of the ventilation region at that time may be appropriately set in accordance with the size of the packaging material to be used, and is not particularly limited, but is preferably 5 to 50 mm, more preferably 10 to 40 mm. More preferably, the thickness is 15 to 30 mm.
- column is arbitrary, and length may be the same or different in several small hole row
- the air permeability in the ventilation region is not particularly limited, but is preferably 11 to 15 s / 800 cc ⁇ 52 cm 2 because it easily reaches a high temperature state.
- the air permeability is a value measured by a test method in which only the measurement area is changed to 52 cm 2 according to the Gurley test method (JIS standard P8117).
- FIG. 1A and 1B show an embodiment of the heating tool 1 of the present invention, in which FIG. 1A is a plan view showing the appearance of the first surface, and FIG. 1B is a plan view showing the appearance of the second surface.
- the outer peripheries of two substantially rectangular packaging materials are bonded together by the bonding portion 4, and a heating agent is sealed inside the bag-shaped packaging material, thereby forming a flat heating tool.
- the first surface and the second surface each have one ventilation region 2, and the belt-like ventilation region 2 extending parallel to the longitudinal center line CD extends from the short side of the packaging material to the other short side.
- the belt-like ventilation region 2 is preferably located on the outer side of the center line CD in the longitudinal direction on each surface.
- the distance (interval) from the center line CD in the longitudinal direction to the center line of the ventilation region 2 and the ventilation region 2 More preferably, the ratio of the distance (interval) from the center line to the longer side of the packaging material closer to the center line is 1: 1 to 5: 1.
- the first surface and the second surface each have a non-venting region 3.
- FIG. 2A is a cross-sectional view taken along line AB in FIG. 1, and the second surface non-venting region 3 is opposite to the first surface vent region 2, and the second surface vent region 2. There is a non-venting region 3 of the first surface on the opposite side.
- the ventilation region 2 on the first surface and the ventilation region 2 on the second surface are positioned symmetrically with respect to the center line CD in the longitudinal direction of the packaging material.
- the fact that the ventilation region 2 on the first surface is symmetrical with respect to the longitudinal center line CD of the packaging material is 180 ° with respect to the longitudinal center line CD of the packaging material. It means that when rotating, it is positioned so as to partially or entirely overlap with the ventilation region 2 on the second surface.
- the heating tool of the present invention has a ventilation region and a non-venting region on the first surface and the second surface, respectively, the heating tool is opposed to the ventilation region 2 on the first surface as shown in FIGS.
- region 2 of a 2nd surface exists may be sufficient.
- an embodiment in which two ventilation regions 2 exist on the first surface and the second surface as shown in FIG. 2D is also included in the present invention.
- the present invention includes a case where the ventilation region has a belt-like ventilation region extending in parallel with the center line in the short direction.
- the ventilation region is located outside the center line in the short direction, and the distance (interval) from the center line in the short direction to the center line of the ventilation region is closer to the center line of the ventilation region.
- the ratio to the distance (interval) to the short side of the packaging material is 1: 1 to 6: 1.
- there is a non-venting area of the second surface on the opposite side of the venting area of the first surface and there is a non-venting area of the first surface on the opposite side of the venting area of the second surface.
- the ventilation region of the second surface is symmetrically positioned with respect to the center line in the short direction of the packaging material.
- the symmetric position with respect to the center line in the short direction of the packaging material means that the ventilation region of the first surface rotates 180 ° about the center line in the short direction of the packaging material. When it does, it means that it is located so that a part or all may overlap with the ventilation area
- FIG. 3 shows another aspect of the heating tool 1 of the present invention, in which a) is an external view of the first surface, and (b) is a plan view showing the external appearance of the second surface.
- the substantially rectangular bag-shaped packaging material has an adhesive portion 4 on two short sides, and a strip-shaped adhesive portion 4 extending in the longitudinal direction on the inner side of the second surface, inside the bag-shaped packaging material.
- a heat generating agent is enclosed to form a flat heating tool.
- the long side portion of the packaging material does not have an adhesive portion.
- the first surface and the second surface have a ventilation region 2 and a non-venting region 3, respectively.
- the strip-shaped ventilation region 2 extending parallel to the longitudinal center line CD extends from the short side of the packaging material to the other short side and exists on the first surface and the second surface across both long sides (cross-section).
- FIG. 4 (a) That is, the ventilation area 2 on the first surface and the ventilation area 2 on the second surface are continuous. 3 and 4, there are two ventilation regions 2 on the first surface and the second surface, respectively, but there may be one on each surface.
- the embodiment of the present invention shown in FIG. 3 can be preferably applied when the heating tool is a small type that is more portable.
- the present invention is applied to a heating tool having a thickness of 2 to 15 mm when the longitudinal direction is 50 to 120 mm, the lateral direction is 40 to 70 mm, and the exothermic agent is present in the packaging material evenly. Is preferred.
- the tubular packaging material is adapted to the hand, so that the feeling of use is improved.
- a sheet as a material of the packaging material is cut into a rectangular shape, and a heat generating agent is sealed inside a cylinder formed by bonding two opposite sides to form a cylinder. The method of adhering the upper end and the lower end of each is mentioned.
- the maximum temperature according to JIS standard S4100 reaches, for example, preferably 65 to 80 ° C., more preferably 67 to 75 ° C., further preferably 69 to 72 ° C. Moreover, it is easy to sustain the high temperature state of 65 degreeC or more, for example, Preferably it is 2 hours or more, More preferably, it is 4 hours or more, More preferably, it lasts 6 hours or more. Further, the average temperature according to JIS standard S4100 is preferably 55 ° C. or higher, more preferably 60 ° C. or higher, and further preferably 62.5 ° C. or higher.
- the packaging material in the heating tool of the present invention is not particularly limited, and a packaging material used for a conventional disposable body warmer or the like can be used.
- a sheet material formed by laminating a nonwoven fabric and a resin film is preferably exemplified, and the nonwoven fabric is usually on the outside.
- the said sheet material can have an intermediate
- the laminated nonwoven fabric and the resin film may be bonded through an adhesive layer such as a hot-melt adhesive.
- the material of the nonwoven fabric is not particularly limited.
- polyester nonwoven fabric polyethylene terephthalate nonwoven fabric, etc.
- polyolefin nonwoven fabric polyethylene nonwoven fabric, polypropylene nonwoven fabric, etc.
- polyamide nonwoven fabric polyamide nonwoven fabric
- rayon A known or conventional nonwoven fabric such as a nonwoven fabric (a nonwoven fabric made of natural fibers, a nonwoven fabric made of synthetic fibers, etc.) can be used.
- the nonwoven fabric production method is not particularly limited, and examples thereof include a spunbond method (spunbond method), a spunlace method (spunlace method), a melt blow method, a thermal bond method, a chemical bond method, and a needle punch method. Can be mentioned.
- the basis weight of the nonwoven fabric is preferably 20 to 40 g / m 2 , for example.
- the material of the resin film is not particularly limited.
- low density polyethylene linear low density polyethylene, medium density polyethylene, high density polyethylene, ethylene-vinyl acetate copolymer, ethylene- ⁇ -olefin copolymer, etc.
- Ethylene resin polypropylene, propylene resin such as propylene- ⁇ -olefin copolymer, polybutene resin such as polybutene-1, poly-4-methylpentene-1, ethylene-acrylic acid copolymer, ethylene-methacrylic acid
- Ethylene-unsaturated carboxylic acid copolymers such as acid copolymers, ethylene-methyl acrylate copolymers, ethylene-ethyl acrylate copolymers, ethylene- (meth) acrylics such as ethylene-methyl methacrylate copolymers
- the density of the resin film is preferably 0.90 to 0.93 g / cm 3 , for example.
- the material for the intermediate layer is not particularly limited, such as other non-woven fabrics, other resin films, titanium white, and aluminum.
- the heating tool of the present invention can be used as a type to be applied to clothing or skin with or without an adhesive part provided in a non-ventilated region of the packaging material, or a type to be applied, but not to be applied without providing the adhesive part. It is preferable to use it as a type.
- the heating agent in the heating tool of the present invention is not particularly limited, and a heating element used in a conventional disposable body warmer or the like can be used.
- oxidizable metal powder such as iron powder, activated carbon, water, water retention agent (wood powder, vermiculite, diatomaceous earth, perlite, silica gel, alumina, water-absorbing polymer, etc.), inorganic salt (sodium chloride, potassium chloride), etc.
- An appropriate amount may be enclosed in accordance with the capacity of the packaging material.
- a mixture of 50 to 60 parts by weight of iron powder, 3 to 10 parts by weight of activated carbon, 2 to 5 parts by weight of sodium chloride, 5 to 20 parts by weight of a water retaining material, and 20 to 32 parts by weight of water is used as a heating agent.
- each side there is one ventilation region on each side, and the ventilation region on the first surface and the ventilation region on the second surface are arranged so as to be symmetric with respect to the longitudinal center line of the packaging material, And each surface is arranged with a width of 20 mm from a position 15 mm away from the center line (Example 1: Fig. 2 (a)), there is one ventilation area on both surfaces, The ventilation area and the ventilation area of the second surface are arranged with a width of 20 mm at the center in the longitudinal direction of the packaging material (Example 2: FIG. 2 (b)).
- the ventilation region of the surface and the ventilation region of the second surface are arranged on the same side with a width of 20 mm from a position 15 mm away from the center line in the longitudinal direction of the packaging material (Example 3: FIG. 2C) ), There are two ventilation areas on each side, the ventilation area on the first side and the ventilation area on the second side And 20 mm from the outer side 15 mm away from the center line (Example 4: FIG. 2 (d)), and there are two ventilation regions only on one side, and the longitudinal direction of the packaging material Each of them was arranged with a width of 20 mm from a position 15 mm away from both outer sides of the center line (Comparative Example 1: FIG. 2 (e)).
- ⁇ Production Example 2 of Heating Tool> Cut out the same sheet as in Production Example 1 into a rectangle, heat-pressed the two opposite sides and formed a cylindrical shape with the nylon nonwoven fabric side outside, and encapsulated 19 g of exothermic agent (same as Production Example 1), By heating and pressing the upper end and the lower end of the cylinder, respectively, a 93 mm ⁇ 55 mm substantially rectangular flat bag-shaped heating tool was produced. Specifically, there are two ventilation regions, each of which is in the form of a strip extending in the longitudinal direction of the packaging material, and having a width of 18 mm and straddling both long sides (Example 5: FIG.
- Ventilation region there is only one ventilation region on one side, and it is a belt-like shape extending in the longitudinal direction of the packaging material, and arranged with a width of 16 mm at the center in the longitudinal direction of the packaging material (Comparative Example 2: FIG. 4 (b) )) And the width of the ventilation region was 24 mm, and the same as Comparative Example 2 (Comparative Example 3: FIG. 4B) was produced.
- the air permeability of the ventilation region was 13.2 s / 800 cc ⁇ 52 cm 2 (Example 5), 14.8 s / 800 cc ⁇ 52 cm 2 (Comparative Example 2), and 12.0 s / 800 cc ⁇ 52 cm 2 (Comparative Example 3), respectively.
- a needle hole was provided so that
- Example 1 The temperature characteristics of the heating tools produced in Production Examples 1 and 2 were tested according to the test method defined in JIS standard S4100. The results are shown in FIGS.
- Example 2 the temperature rose to a maximum of about 73 ° C., the state of 65 ° C. or higher was maintained for about 4.5 hours, and the average temperature was about 58 ° C. (FIG. 5).
- Example 1 rose to a maximum of about 70 ° C., maintained a state of 65 ° C.
- Example 3 the temperature increased up to about 67 ° C., the state of 65 ° C. or higher was maintained for about 2 hours, and the average temperature was about 56 ° C.
- Example 4 the temperature increased up to about 78 ° C., the state of 65 ° C. or higher was maintained for about 4 hours, and the average temperature was about 69 ° C.
- Comparative Example 1 the temperature rose to about 66 ° C. at maximum, the state of 65 ° C. or higher was maintained for about 8 hours, and the average temperature was about 62 ° C. (FIG. 6).
- Example 5 rose to a maximum of about 70 ° C., maintained a temperature of 65 ° C. or higher for about 3 hours, and the average temperature was about 63 ° C.
- Comparative Example 2 the maximum temperature increased only to about 63 ° C.
- Comparative Example 3 the maximum temperature increased only to about 58 ° C., and the average temperature was about 52 ° C. (FIG. 7).
- a belt-like ventilation region extending in the longitudinal direction is preferably disposed on both sides across both long sides, in order to achieve both high temperature and high temperature sustainability.
- the said average temperature is based on the calculation method prescribed
- Test method First, as a coating material in a thermostatic chamber with a chamber temperature of 0 ° C. Lay an 8-layer cotton towel (yarn count: 20/1, size: about 34 x 88 cm, weight per sheet: about 69 g), and place a test sample on it to prevent the exothermic composition from being biased. A thermometer was fixed with a cellophane tape at the center of the lower surface of the test sample. (When a heating tool having a needle hole only on one side was used as the test sample, the surface having the needle hole was made the upper surface. ). Next, the covering material was bent so that the upper surface of the installed test sample was also covered with the covering material, and temperature measurement was started. Measurements were recorded every minute.
- FIG. 8 and Table 2 show the results of evaluating the heating tools of Example 1, Example 4, and Comparative Example 1 in a low temperature environment of 0 ° C.
- Example 1 the maximum temperature reached 50 ° C., and the state of 40 ° C. or higher was maintained for 4.5 hours.
- Example 4 the maximum temperature reached 60.1 ° C., and the temperature of 40 ° C. or higher was maintained for 3.8 hours.
- Comparative Example 1 the maximum temperature reached 45 ° C., and the state of 40 ° C. or higher was maintained for 2.8 hours.
- Example 1 having the longest duration is most preferable, and then Example 4 is The result was favorable.
- Comparative Example 1 had the shortest duration and the lowest maximum temperature.
- a heating tool that becomes hot during use and maintains a high temperature state for a long time. Since the heating tool is suitable for outdoor work in winter or use in cold regions, the present invention is industrially useful.
- Heating tool 2 Ventilation area 3: Non-ventilation area 4: Adhesion area 5: Heating agent
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Abstract
Description
一般的な発熱具は、被酸化性金属粉(鉄粉)、木材チップ、バーミキュライト、吸水性ポリマー、活性炭、塩類、及び水等の混合物からなる発熱剤が、樹脂フィルムや不織布、紙等の袋状の包材に封入されている。通常、保存時は密封外袋に収納されており、使用時に密封外袋から取り出して、包材の通気領域を介して外部から取り込まれた空気中の酸素により発熱剤が酸化反応するのでその発熱を採暖に利用できる。
市販されている発熱具の多くは、JIS規格S4100-2007(以下、単にJIS規格S4100と呼ぶ。)に拠る評価において40℃に達するのに要する立ち上がり時間が10~20分程度、使用時の平均温度が50℃前後、最高温度が60℃前後、40℃以上を保持する持続時間が8~24時間程度である。
例えば、特許文献1には、発熱具の包材の一方の面には左右に分離した通気領域を設けることにより、発熱の立ち上がり時間を短くできたことが記載されている。また、特許文献2には、発熱具の全面が通気領域である包材の表面に空気を遮断するシートを設け、該シートを任意に剥離して通気領域面積を調整することにより、発熱温度と発熱持続時間とを調節できることが記載されている。
しかしながら、高温タイプとして市販されている発熱具は、60℃以上の最高温度を実現しながらも高温状態を維持できる時間は長くない。また、前述のように発熱具の包材の形態を工夫した例は種々あるものの、いずれも高い温度と高温状態の持続性とを実現できていない。特に、周辺温度が低いと発熱具の発熱性能もそれに伴って低下するため、低温環境下ではJIS規格S4100に拠る評価で高い温度と高温状態の維持を示すものでなければ実使用に耐えないが、未だ満足のいく発熱具は得られていない。
かかる状況に鑑み、本発明は、使用の際に高温になり、かつ高温状態が長時間持続する発熱具を提供することを目的とする。特に、本発明は、低温環境下でも十分な温感が長時間得られる発熱具を提供することを目的とする。
[1]発熱剤と前記発熱剤を封入する包材とを含む発熱具であって、前記包材は第一面及び第二面からなる扁平な袋状であり、前記第一面及び第二面はそれぞれ通気領域と非通気領域とを有する、発熱具。
[2]前記第一面及び第二面はそれぞれ1箇所の通気領域を有する、[1]に記載の発熱具。
[3]通気領域は、前記包材の長手方向又は短手方向に延びる帯状である、[1]又は[2]に記載の発熱具。
[4]前記第一面の通気領域の対面に前記第二面の非通気領域があり、前記第二面の通気領域の対面に前記第一面の非通気領域がある、[1]~[3]の何れかに記載の発熱具。
[5]前記第一面の通気領域と前記第二面の通気領域とが、前記包材の長手方向又は短手方向の中心線に対して対称に位置する、[4]に記載の発熱具。
[6]前記包材は不織布と樹脂フィルムとを積層してなり、前記通気領域は前記包材を貫通する複数の小孔により形成されるものである、[1]~[5]の何れかに記載の発熱具。
[7]発熱剤と前記発熱剤を封入する包材とを含む発熱具であって、前記包材は第一面及び第二面からなる扁平な袋状であり、前記第一面及び第二面はそれぞれ通気領域と非通気領域とを有し、前記第一面の通気領域と前記第二面の通気領域とが、前記包材の長辺又は短辺をまたいで連続して存在する、発熱具。
[8]通気領域は、前記包材の長手方向又は短手方向に延びる帯状である、[7]に記載の発熱具。
[9]前記第一面及び第二面はそれぞれ2箇所の通気領域を有する、[7]又は[8]に記載の発熱具。
本発明における包材は、第一面及び第二面からなる扁平な袋状である。ここで、第一面及び第二面は、扁平な袋状である包材の一方の略平面と他方の略平面を指す。第一面と第二面とは、同一の(一続きの)包材の部材で形成されている場合も、複数の部材で形成されている場合も、本発明に含まれる。
本発明の発熱具の形状は特に限定されないが、通常は略矩形である。大きさは特に限定されるものではないが、例えば長手方向が50~150mmで、短手方向が40~140mmで、包材内に発熱剤が偏りなく存在している状態で厚みが2~15mmであることが、手のひらやポケットに納めやすいことから好ましい。
各面における通気領域の合計面積と非通気領域の合計面積との比率は、特に限定されないが、1:5~1:1であることが好ましく、1:4~1:2であることがより好ましい。上記範囲に設定することで、発熱具が高温状態に達しやすく、また高温状態を持続しやすくなる。
通常、通気領域は、包材を貫通する複数の小孔により形成される。ここで小孔は、包材内部の発熱剤が通過しない程度の大きさであり、特に限定されないが例えばφ0.01~0.5mmである。また、その形状も特に限定されない。
通気領域は、例えば前記小孔を包材の長手方向又は短手方向に沿って一定の間隔に設けた小孔列を一定の間隔で1~15本、好ましくは3~15本、より好ましくは6~15本設けることにより、形成することができる。
1本の小孔列における小孔同士の間隔は特に制限はないが、1~6mmであることが好ましく、2~4mmであることがより好ましい。
小孔列を複数本設ける場合、小孔列同士の間隔は特に制限はないが、1~6mmであることが好ましく、2~4mmであることがより好ましい。また、その際の通気領域の幅は、使用する包材の大きさに合わせて適宜設定すればよいため特に制限はないが5~50mmであることが好ましく、10~40mmであることがより好ましく、15~30mmであることがさらに好ましい。
また、小孔列1本あたりの長さは任意であり、複数の小孔列同士で長さが同一又は異なっていてもよい。
通気領域の通気度は、特に限定されないが、11~15s/800cc・52cm2であることが、高温状態に達しやすいことから好ましい。なお、ここで通気度は、ガーレ試験法(JIS規格P8117)に準じ、測定面積のみ52cm2に変更した試験法で測定した値である。
図1は本発明の発熱具1の一態様を表し、(a)は第一面の外観を、(b)は第二面の外観を表す平面図である。略矩形の2枚の包材の外周が接着部4で接着され、袋状の包材の内部に発熱剤が封入されて、扁平な発熱具が構成される。第一面及び第二面はそれぞれ1箇所の通気領域2を有し、長手方向の中心線CDに平行に延びる帯状の通気領域2は、包材の短辺からもう片方の短辺まで至る。帯状の通気領域2は、各面において長手方向の中心線CDよりも外側に位置することが好ましく、長手方向の中心線CDから通気領域2の中心線までの距離(間隔)と通気領域2の中心線から近い方の包材の長辺までの距離(間隔)との比が1:1~5:1であることがより好ましい。また、第一面及び第二面はそれぞれ非通気領域3を有する。図2(a)は、図1の線ABでの断面図を表し、前記第一面の通気領域2の対面に前記第二面の非通気領域3があり、前記第二面の通気領域2の対面に前記第一面の非通気領域3がある。ここでより好ましくは、前記第一面の通気領域2と前記第二面の通気領域2とが、前記包材の長手方向の中心線CDに対して対称に位置する。なお、本明細書において、前記包材の長手方向の中心線CDに対して対称に位置するとは、前記第一面の通気領域2が包材の長手方向の中心線CDを軸にして180°回転したときに、前記第二面の通気領域2に一部または全部が重なるように位置することを意味する。
通気領域をこのように配置することにより、発熱剤の酸化を促して高温状態に達しやすくする一方、発熱反応の過剰な進行を抑え高温状態を持続しやすくできる。
この場合、通気領域は短手方向の中心線よりも外側に位置することが好ましく、短手方向の中心線から通気領域の中心線までの距離(間隔)と通気領域の中心線から近い方の包材の短辺までの距離(間隔)との比が1:1~6:1であることがより好ましい。また、第一面の通気領域の対面に第二面の非通気領域があり、第二面の通気領域の対面に第一面の非通気領域があることが好ましく、前記第一面の通気領域と前記第二面の通気領域とが、前記包材の短手方向の中心線に対して対称に位置することがより好ましい。なお、本明細書において、前記包材の短手方向の中心線に対して対称に位置するとは、前記第一面の通気領域が包材の短手方向の中心線を軸にして180°回転したときに、前記第二面の通気領域に一部または全部が重なるように位置することを意味する。
このような小さいタイプの発熱具においては、前述のように長辺部分に包材の接着部を有しないことが好ましく、また長手方向の接着部は第二面の内側により好ましくは中央にあることが好ましい。それによって、手のひらに納めたときに包材の接着部の硬い手触りを生じにくく、筒状の包材が手になじむため、使用感が良好になる。
この態様の発熱具を製造する際は、例えば、包材の材料となるシートを1枚、長方形に切り出し、向かい合う2辺を接着して筒状に成形した内部に、発熱剤を封入し、筒の上端及び下端をそれぞれ接着する方法が挙げられる。
また、不織布の製造方式としては、特に限定されないが、例えば、スパンボンド法(スパンボンド方式)、スパンレース法(スパンレース方式)、メルトブロー法、サーマルボンド法、ケミカルボンド法、ニードルパンチ法などが挙げられる。
不織布の目付けは、例えば20~40g/m2のものが好ましい。
樹脂フィルムの密度は、例えば、0.90~0.93g/cm3のものが好ましい。
一例として、鉄粉50~60質量部、活性炭3~10質量部、塩化ナトリウム2~5質量部、保水材5~20質量部、及び水20~32質量部の組成で混合したものを発熱剤として用いることができる。
ナイロン不織布、ポリエチレンフィルム、及び直鎖状低密度ポリエチレンフィルムを順に積層したシート2枚を、ナイロン不織布側を外側にして重ね、内部に51gの発熱剤を封入して外周を加熱圧着することにより、132mm×100mmの略矩形の扁平な袋状の発熱具を作製した。発熱剤の構成成分は、鉄粉、活性炭、塩化ナトリウム、保水材、及び水である。シートには、2mm間隔でφ0.05mmの針孔列を2mm間隔で11本設けることにより、12.5s/800cc・52cm2の長手方向に延びる帯状の通気領域を設けた。具体的には、通気領域が両面に1箇所ずつ存在し、第一面の通気領域と第二面の通気領域とが包材の長手方向の中心線に対して対称になるように配置し、かつ各面において該中心線よりも外側に15mm離れたところから20mmの幅で配置したもの(実施例1:図2(a))、通気領域が両面に1箇所ずつ存在し、第一面の通気領域及び第二面の通気領域を包材の長手方向の中央に20mmの幅で配置したもの(実施例2:図2(b))、通気領域が両面に1箇所ずつ存在し、第一面の通気領域と第二面の通気領域とを包材の長手方向の中心線よりも外側に15mm離れたところから20mmの幅で同じ側に配置したもの(実施例3:図2(c))、通気領域が両面に2箇所ずつ存在し、第一面の通気領域と第二面の通気領域を包材長手方向の中心線よりも両外側に15mm離れたところから20mmの幅でそれぞれ配置したもの(実施例4:図2(d))、及び通気領域が片面にのみ2箇所存在し、包材の長手方向の中心線よりも両外側に15mm離れたところから20mmの幅でそれぞれ配置したもの(比較例1:図2(e))を作製した。
上記製造例1と同じシートを長方形に切り出し、向かい合う2辺を加熱圧着してナイロン不織布側を外側にして筒状に成形した内部に、19gの発熱剤(製造例1と同じ)を封入し、筒の上端及び下端をそれぞれ加熱圧着することにより、93mm×55mmの略矩形の扁平な袋状の発熱具を作製した。具体的には、通気領域が2箇所存在し、それぞれ包材の長手方向に延びる帯状であって、18mmの幅で両長辺をまたいで両面に配置したもの(実施例5:図4(a))、通気領域が片面にのみ1箇所存在し、包材の長手方向に延びる帯状であって、包材の長手方向の中央に16mmの幅で配置したもの(比較例2:図4(b))及び通気領域の幅を24mmにした以外は比較例2と同様のもの(比較例3:図4(b))を作製した。通気領域の通気度は、それぞれ13.2s/800cc・52cm2(実施例5)、14.8s/800cc・52cm2(比較例2)、及び12.0s/800cc・52cm2(比較例3)となるように針孔を設けた。
JIS規格S4100に規定される試験法に則って、製造例1及び2で作製した発熱具の温度特性を試験した。結果を図5~7に示す。
実施例1は、最高で約71℃まで上昇し、65℃以上の状態を約7時間持続し、平均温度は約65℃であった。実施例2は、最高で約73℃まで上昇し、65℃以上の状態を約4.5時間持続し、平均温度は約58℃であった。(図5)。また、別の試験では、実施例1は、最高で約70℃まで上昇し、65℃以上の状態を約8時間持続し、平均温度は約61℃であった。実施例3は、最高で約67℃まで上昇し、65℃以上の状態を約2時間持続し、平均温度は約56℃であった。実施例4は、最高で約78℃まで上昇し、65℃以上の状態を約4時間持続し、平均温度は約69℃であった。比較例1は、最高で約66℃まで上昇し、65℃以上の状態を約8時間持続し、平均温度は約62℃であった(図6)。これらの試験結果より、高い温度と高温状態の持続性とを両立させるには、通気領域を両面に1箇所ずつ設けることが好ましく、さらに長手方向の中心線に対して対称に配置することがより好ましいことがいえる。
また、別の試験では、実施例5は最高で約70℃まで上昇し、65℃以上の状態を約3時間持続し、平均温度は約63℃であった。比較例2では最高で約63℃、比較例3では最高で約58℃までしか上昇せず、平均温度は約52℃であった(図7)。この試験結果より、長手方向に延びる帯状の通気領域が両長辺をまたいで両面に配置も、高い温度と高温状態の持続性との両立に好ましいといえる。
なお、上記平均温度は、JIS規格S4100に規定される算出方法に拠る。
低温環境下での発熱具の温度特性は、JIS規格で規定された試験法が存在しないため、JIS規格S4100で規定された試験法を参考に以下の手順で評価した。
(1)試験サンプル
実施例1、実施例4及び比較例1で製造した発熱具をそれぞれ試験サンプルとして使用した(各群n=3)。
(2)恒温器
低温インキュベーターCR-14C(日立株式会社)
(3)測温器
おんどとりTR-71wf(株式会社T&D)
(4)試験環境
試験サンプルは20℃環境下で外袋を開封し、即時0℃×成り行き湿度環境下で測定
(5)試験方法
まず、庫内温度が0℃の恒温器内に被覆材として8枚重ねのコットンタオル(糸番手:20/1、サイズ:約34×88cm、1枚あたり重さ:約69g)を敷き、その上に発熱組成物が偏らないよう試験サンプルを設置し、当該試験サンプルの下面中央部にセロハンテープで測温器を固定した(なお、針孔が片面にしか存在しない発熱具を試験サンプルとして使用する場合は、針孔が空いている面を上面にした。)。
次に、設置した試験サンプルの上面も被覆材で覆われるように被覆材を折り曲げ、温度測定を開始した。測定値は1分毎に記録した。
(6)評価方法
JIS規格S4100を参考に、表1のように最高温度、平均温度、持続時間を評価した。
なお、ヒトが温感を感じるのは40℃以上と言われており、JIS規格S4100でも40℃を基準に持続時間や平均温度を定めている。今回試験した低温環境下での場合も、温感を感じる時間を評価するには、40℃以上を持続する時間で評価した。
0℃の低温環境下で実施例1、実施例4、及び比較例1の発熱具を評価した結果を図8及び表2に示す。実施例1は最高温度が50℃まで達し、40℃以上の状態を4.5時間持続した。また、実施例4は最高温度が60.1℃まで達し、40℃以上の状態を3.8時間持続した。また、比較例1は最高温度が45℃まで達し、40℃以上の状態を2.8時間持続した。
以上より、低温環境下でも十分な温感を長時間得るには、実施例1、4、及び比較例1の中では、持続時間が最長である実施例1が最も好ましく、次いで実施例4が好ましいという結果になった。今回の試験サンプルの中で、比較例1は持続時間が最も短く、最高温度も最も低かった。
2:通気領域
3:非通気領域
4:接着領域
5:発熱剤
Claims (6)
- 発熱剤と前記発熱剤を封入する包材とを含む発熱具であって、
前記包材は第一面及び第二面からなる扁平な袋状であり、
前記第一面及び第二面はそれぞれ通気領域と非通気領域とを有する、発熱具。 - 前記第一面及び第二面はそれぞれ1箇所の通気領域を有する、請求項1に記載の発熱具。
- 通気領域は、前記包材の長手方向又は短手方向に延びる帯状である、請求項1又は2に記載の発熱具。
- 前記第一面の通気領域の対面に前記第二面の非通気領域があり、
前記第二面の通気領域の対面に前記第一面の非通気領域がある、請求項1~3の何れか一項に記載の発熱具。 - 前記第一面の通気領域と前記第二面の通気領域とが、前記包材の長手方向又は短手方向の中心線に対して対称に位置する、請求項4に記載の発熱具。
- 前記包材は不織布と樹脂フィルムとを積層してなり、前記通気領域は前記包材を貫通する複数の小孔により形成されるものである、請求項1~5の何れか一項に記載の発熱具。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680020265.5A CN107427383A (zh) | 2015-03-31 | 2016-03-31 | 发热器具 |
KR1020177029168A KR20170132785A (ko) | 2015-03-31 | 2016-03-31 | 발열구 |
US15/562,816 US20180104096A1 (en) | 2015-03-31 | 2016-03-31 | Exothermic device |
JP2017510179A JP6710679B2 (ja) | 2015-03-31 | 2016-03-31 | 発熱具 |
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JP2015-071953 | 2015-03-31 | ||
JP2015071953 | 2015-03-31 |
Publications (1)
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WO2016159225A1 true WO2016159225A1 (ja) | 2016-10-06 |
Family
ID=57007246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/060639 WO2016159225A1 (ja) | 2015-03-31 | 2016-03-31 | 発熱具 |
Country Status (6)
Country | Link |
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US (1) | US20180104096A1 (ja) |
JP (1) | JP6710679B2 (ja) |
KR (1) | KR20170132785A (ja) |
CN (1) | CN107427383A (ja) |
TW (1) | TW201700072A (ja) |
WO (1) | WO2016159225A1 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0251534U (ja) * | 1988-10-07 | 1990-04-11 | ||
US20040199231A1 (en) * | 2003-04-01 | 2004-10-07 | Heatmax, Inc. | Self-contained personal warming apparatus and method of warming |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1247731A (zh) * | 1998-09-15 | 2000-03-22 | 张志华 | 保健发热袋及其生产方法 |
-
2016
- 2016-03-31 US US15/562,816 patent/US20180104096A1/en not_active Abandoned
- 2016-03-31 JP JP2017510179A patent/JP6710679B2/ja active Active
- 2016-03-31 TW TW105110304A patent/TW201700072A/zh unknown
- 2016-03-31 WO PCT/JP2016/060639 patent/WO2016159225A1/ja active Application Filing
- 2016-03-31 CN CN201680020265.5A patent/CN107427383A/zh active Pending
- 2016-03-31 KR KR1020177029168A patent/KR20170132785A/ko unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0251534U (ja) * | 1988-10-07 | 1990-04-11 | ||
US20040199231A1 (en) * | 2003-04-01 | 2004-10-07 | Heatmax, Inc. | Self-contained personal warming apparatus and method of warming |
Also Published As
Publication number | Publication date |
---|---|
KR20170132785A (ko) | 2017-12-04 |
TW201700072A (zh) | 2017-01-01 |
CN107427383A (zh) | 2017-12-01 |
JPWO2016159225A1 (ja) | 2018-02-01 |
JP6710679B2 (ja) | 2020-06-17 |
US20180104096A1 (en) | 2018-04-19 |
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