WO2007081010A1 - Element chauffant ondule des deux cotes - Google Patents

Element chauffant ondule des deux cotes Download PDF

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Publication number
WO2007081010A1
WO2007081010A1 PCT/JP2007/050437 JP2007050437W WO2007081010A1 WO 2007081010 A1 WO2007081010 A1 WO 2007081010A1 JP 2007050437 W JP2007050437 W JP 2007050437W WO 2007081010 A1 WO2007081010 A1 WO 2007081010A1
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WO
WIPO (PCT)
Prior art keywords
heating element
double
heat generating
heat
sided uneven
Prior art date
Application number
PCT/JP2007/050437
Other languages
English (en)
Japanese (ja)
Inventor
Toshihiro Dodo
Original Assignee
Mycoal Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mycoal Co., Ltd. filed Critical Mycoal Co., Ltd.
Publication of WO2007081010A1 publication Critical patent/WO2007081010A1/fr

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Classifications

    • 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
    • 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

Definitions

  • the present invention has an uneven surface on both sides, and is flexible before, during and after heating, that is, before, during and after use, and can be used repeatedly for a long time, particularly by directly contacting the skin.
  • the present invention relates to a double-sided uneven heating element for warming a human body.
  • a metal powder such as iron powder, activated carbon, a reaction accelerator (inorganic electrolyte, etc.), water and the exothermic composition that generates heat upon contact with oxygen in the air are stored in a breathable storage bag.
  • the heated body is widely used as a warmer.
  • the general structure of these heating elements is a wet powdery exothermic composition in which metal powder, activated carbon, a reaction accelerator (inorganic electrolyte, etc.), water, etc., which generate heat when in contact with oxygen in the air, are mixed.
  • Objects are stored in a breathable flat bag as a heating element.
  • the heating element is used as a warming tool for the purpose of keeping warm against cold, etc., and as a thermal treatment tool for stiff shoulders, neuralgia, muscle pain, etc., and blood circulation is promoted simply by applying it to the affected area. Therefore, it is widely used as a simple blood circulation promoting treatment tool.
  • Patent Document 1 As a heating element configured to be used by being attached to underwear, in order to facilitate the mounting of a heating bag, one side of a flat heating bag is provided with air permeability, and the other A heat-generating bag that has a non-transferable adhesive layer (same meaning as the adhesive part) attached to the entire surface of almost one side or an appropriate pattern, and the surface with this adhesive layer is applied to the upper part of the undergarment.
  • a non-transferable adhesive layer (same meaning as the adhesive part) attached to the entire surface of almost one side or an appropriate pattern, and the surface with this adhesive layer is applied to the upper part of the undergarment.
  • Patent Document 2 also proposes a heat generating bag in which a pressure-sensitive adhesive layer is partially provided on the air permeable surface in order to limit the air flow rate of the air permeable packaging material and increase the heat generation duration.
  • Patent Document 3 describes a direct-adhesion re-type fever bag (hereinafter referred to as a direct-adhesion type) that is applied directly to the skin, and is intended to prevent itching and rash on the skin when it is applied directly to the skin. It is also proposed that the area of the pressure-sensitive adhesive layer be 30 to 70%. In addition, heat transfer from the heat-generating bag to the body of the heat-generating bag to be applied is improved, and the heat-generating bag is made lighter and thinner so that one side of the flat bag has air permeability and the other side. An exothermic bag has also been developed in which an adhesive part is provided on the skin and the surface of the adhesive part is attached directly to the skin.
  • Patent Document 4 discloses a sheet-like heating element that uses heat generated by an oxidation reaction between oxygen in the air and an oxidizable metal powder.
  • a composition obtained by mixing a fibrous substance in iron powder, activated carbon, electrolyte, and water is formed into a sheet shape by papermaking to improve the wearability and the like.
  • the conventional heating element has the following problems.
  • Patent Document 1 Japanese Utility Model Publication No. 56-34735
  • Patent Document 2 Japanese Utility Model Publication No. 3-96816
  • Patent Document 3 Japanese Patent Laid-Open No. 9557
  • Patent Document 4 Japanese Patent No. 2572612
  • the problem of the present invention is that the flexibility of the heating element does not change before the heating of the heating element and after the heating of the heating element during the heating is completed, and has an excellent thermal effect.
  • it is intended to provide a highly safe heating element that does not cause redness, medical treatment, etc. even if used for a long time.
  • the object is to provide a heating element that can efficiently transfer heat to the body, can maintain stable heat generation characteristics, and can be expected in various applications.
  • the present inventor has reached the present invention as a result of intensive studies to solve these problems.
  • the double-sided uneven heating element of the present invention is a heating element comprising a heating composition molded body that generates heat upon contact with oxygen, as described in claim 1, wherein a plurality of the molded bodies are arranged. And sandwiching between the base material and the covering material and sealing including the periphery of the molded body to form a segmented heat generating portion including the molded body and a segmented portion including a seal portion.
  • the heating element has four or more of the divided heat generating portions, wherein the divided heat generating portion has a length of 5 mm to 300 mm, a width of 1 mm to less than 25 mm, a height of 0.1 mm to less than 10 mm, and the width
  • the length of the heating element is 2.0 to 60
  • the width of the section is 0.1 to 100 mm
  • the minimum bending resistance of the heating element is 100 mm or less
  • the minimum bending ratio is 60 or less. It is characterized by that.
  • the present invention according to claim 2 is the double-sided uneven heating element according to claim 1, wherein the molded body is a mixture containing iron powder, a carbon component, a reaction accelerator and water as essential components.
  • the mobile water value is 0.01 to 13.5, the molding degree is 5 or more, and the moisture in the mixture does not function as an air barrier layer.
  • the surplus water exothermic composition that causes an exothermic reaction with a temperature rise of 5 ° C or more within 5 minutes after being left standing is molded into a strip shape.
  • the present invention described in claim 3 is the double-sided uneven heating element according to claim 1 or 2, wherein the exothermic composition molded body includes a heat generating sheet with holes, a heat generating sheet piece with holes, and a heat generating element. It is one of the pieces.
  • the present invention according to claim 4 is the double-sided uneven heating element according to any one of claims 1 to 3, wherein at least a part of the divided portion between the adjacent divided heat generating portions is cut. It is formed.
  • the invention according to claim 5 is characterized in that, in the double-sided uneven heating element according to claim 4, a notch (notch) is provided at at least one end of the cut.
  • the invention according to claim 6 is the double-sided uneven heating element according to any one of claims 1 to 5, wherein the change in the minimum bending resistance before and after the heat generation of the heating element is 30% or less. It is characterized by being.
  • the present invention according to claim 7 is the double-sided uneven heating element according to any one of claims 1 to 6, wherein at least a part of the region other than the segment heating part is arranged in a longitudinal direction of the segment heating part.
  • a feature is that the cuts are arranged differently from each other.
  • the present invention described in claim 8 is the double-sided uneven heating element according to any one of claims 1 to 7, wherein a fixing means is provided on at least a part of the exposed portion of the double-sided uneven heating element. It is characterized by that.
  • the invention according to claim 9 is the double-sided uneven heating element according to claim 8, characterized in that the fixing means is an adhesive layer.
  • the present invention according to claim 10 is the double-sided uneven heating element according to claim 9, wherein the pressure-sensitive adhesive layer includes a region extending in the longitudinal direction from the section, and a longitudinal direction of the heating element. It is provided at both ends of the direction.
  • the present invention according to claim 11 is the double-sided uneven heating element according to claim 9, wherein the pressure-sensitive adhesive layer includes a region extending in a longitudinal direction from a top region of each of the divided heat generating portions, and It is provided at both end portions in the longitudinal direction of the heating element, and an air-permeable surface is provided from a side surface portion of the section heating portion.
  • the double-sided uneven heating element of the present invention has a heat generating composition molded body obtained by molding a moldable surplus water heat generating composition that generates heat in contact with oxygen by a mold molding method.
  • the exothermic composition molded body obtained by molding a moldable surplus water exothermic composition that causes an exothermic reaction with a temperature rise of 5 ° C or more within a mold molding method is laminated on a substrate, and further coated with a coating material.
  • This is an integrally formed heat generating region having a surface A which is one surface and a surface B which is the other surface as a result of covering and heat-sealing the base material and the coating material at the peripheral portion of the heat generating composition molded body 4 It has a plurality of segmented heat generating parts, the length of the divided heat generating parts is 5 mm to 300 mm, the width is 1 mm or more and less than 25 mm, and the height is 0.1 lm m to 10 mm. Z width) ratio is 2.0 to 60, the width of the section is 0.1 to 10 Omm, and the four or more section heat generating sections are separated from each other and are striped in at least one direction.
  • At least one of the base material and the covering material is air permeable (oxygen permeable), the surface A is air permeable, and both surfaces of the surface B are convex segmented heat generating portions.
  • An uneven surface having a height formed by a concave (flat) section, and the heating element has a minimum bending resistance of 100 mm or less and a minimum bending resistance ratio of 60 or less, and a minimum rigidity. It is preferred to have a structure that does not bend easily except in directions that have softness, has a direction in terms of ease of bending, and is extremely easy to bend only in one direction compared to other directions.
  • the double-sided uneven heating element of the present invention has a heating part provided at intervals, with the section heating part having a heating composition molded body that generates heat in contact with air (oxygen) as the seal part.
  • a heating composition molded body that generates heat in contact with air (oxygen) as the seal part.
  • 4 or more of exothermic composition molded bodies composed of sheet-like heating pieces having iron powder, a carbon component, a reaction accelerator and water as essential components. And then covering the substrate with a covering material, and heat-sealing the base material and the covering material at the peripheral edge of the exothermic composition molded body. It has a heat generation area of 4 or more that is an integrally formed heat generation area with surface B, which is one side, and has a length of 5 mm to 300 mm, a width of 1 mm to less than 25 mm, and a height.
  • the ratio of (length Z width) is 2.0 ⁇ 60
  • the width of the section is 0.1 ⁇ : LOOmm
  • the two or more section heating parts are separated from each other Formed in a stripe shape in at least one direction, and a small number of the base material and the covering material.
  • At least one type is air permeable (oxygen permeable)
  • the surface A is air permeable
  • both surfaces of the surface B are formed of a convex segment heating part and a concave (flat) segment part.
  • the heating element has a minimum bending resistance of 100 mm or less, and a minimum bending resistance ratio of 60 or less, and does not bend easily except in the direction having the lowest bending resistance, It is preferable to have a structure in which there is a direction in the bend ease and only one direction is extremely easy to bend compared to the other directions.
  • the double-sided uneven heating element of the present invention has a heating part provided at intervals, with the section heating part having a heating composition molded body that generates heat in contact with air (oxygen) as the seal part.
  • a heating element comprising a sheet-like heating piece with holes having a single stripe-shaped space portion, which is composed of an iron powder, a carbon component, a reaction accelerator and water as essential components.
  • Two or more molded products are laminated on a base material at intervals, and further coated with a coating material, and the base material and coating material at the peripheral edge of the exothermic composition molded product are heat sealed.
  • the ratio of (length Z width) is 2.0 ⁇ 60
  • the width of the section that is the space is 0.1 ⁇ : LOOmm
  • the two or more divided heat generating parts Are separated from each other by a space between the space and the sheet-like heating piece with holes, and are formed in stripes in at least one direction, and at least one of the base material and the covering material is air permeable (oxygen permeable).
  • the A surface is air permeable, and both surfaces of the eight and B are uneven surfaces having a height formed by a convex segment heat generating portion and a concave (flat) segment portion,
  • the minimum bending resistance of the heating element is 100 mm or less, and the minimum bending resistance ratio is 60 or less, and it is not easily bent except in the direction with the minimum low bending resistance, and there is a direction in the bending ease. It is preferable to have a structure in which only one direction is extremely bendable compared to other directions.
  • the double-sided uneven heating element of the present invention has a heating part provided at intervals, with the section heating part having a heating composition molded body that generates heat in contact with air (oxygen) as the seal part.
  • Double-sided uneven heating element having iron powder, carbon component, and reaction promotion An exothermic composition molded body composed of a heat-generating sheet with holes having an agent and water as essential components and having a plurality of striped space portions at intervals of 3 or more is laminated on a substrate and further coated with a coating material.
  • a heat generating region formed by coating and heat-sealing the base material and the covering material at the peripheral portion of the heat-generating composition molded body, and having an A surface which is one surface and a B surface which is the other surface.
  • the length of the divided heat generating part which is the area between the space part is 5mm to 300mm, the width is more than lmm to less than 25mm, and the height is 0.5mm ⁇ 10 mm, the ratio of (length Z width) is 2.0 to 60, the width of the space is 0.1 to 100 mm, and the four or more divided heat generating portions are separated from each other, at least It is formed in stripes in one direction, and at least one of the base material and the covering material has air permeability (oxygen permeability).
  • the surface A is air permeable, and both surfaces of the surface B are uneven surfaces having a height formed by a convex section heating portion and a concave (flat) section, and the minimum height of the heating element is low.
  • the bending resistance is 100mm or less, the minimum bending resistance ratio is 60 or less, and it does not bend easily except in the direction with the minimum bending resistance, and the direction of the bending is oriented. Only U is preferred, having a structure that is extremely bendable.
  • the double-sided uneven heating element has a notched portion at least at one end portion of the heat generating sheet piece with holes and the stripe-shaped space portion of the heat generating sheet with holes at least on an extension line in the longitudinal direction of the stripe-shaped space portion. Preferred to have.
  • the double-sided uneven heating element of the present invention has an exothermic composition containing iron powder, a carbon component, a reaction accelerator, and water as essential components, and three or more stripe-shaped spaces are spaced apart.
  • the exothermic composition molded body consisting of a heat-generating sheet with holes is stored in a storage body that has a base material and a covering material and sheet-sealed on three sides, and the remaining one side is heat-sealed to form a bonded heating element.
  • at least one of the base material and the covering material has air permeability (oxygen permeability), has a direction for ease of bending, and has a structure in which only one direction is extremely easy to bend compared to the other direction.
  • the exothermic composition molded body has a concavo-convex surface having a height and is formed by having a space portion.
  • the double-sided uneven heating element is selected as the intermediate force of the paper sheet type heat generating sheet in which the heat generating sheet spreads and holds the heat generating composition on the nonwoven fabric and the heat generating composition is manufactured by the paper making method.
  • One type is preferred.
  • the double-sided uneven heating element has a fixing means on at least one part of the exposed part of the double-sided uneven heating element.
  • the fixing means is preferably an adhesive layer.
  • the fixing means is a means for fixing the double-sided uneven heating element to the inner part of the user's clothes, and the B surface of the heating element is the user's B surface. It is preferable that it is located on the A side of the above-mentioned divided heat generating part so as to be placed directly on the body.
  • the pressure-sensitive adhesive layer has each section on one side of the double-sided uneven heating element, and extends to both ends of the heating element. It is preferable to be provided at both ends in the direction.
  • the pressure-sensitive adhesive layer has a top area of each divided heating part on one side of the double-sided uneven heating element and the area extending to both ends of the heating element to the both ends. It is preferable that the heating element is provided at least at both ends in the longitudinal direction, and the ventilation is performed mainly from the side surface of the divided heating part.
  • the double-sided uneven heating element is a network-like breathable adhesive layer in which the pressure-sensitive adhesive layer is provided on one side of the double-sided uneven heating element by a nozzle injection method such as a melt blow method or a curtain coat method. I prefer to be established.
  • the packaging material and the pressure-sensitive adhesive layer of the double-sided uneven heating element contains a functional substance.
  • the packaging material on the side opposite to the body is a water-absorbing packaging material.
  • the double-sided uneven heating element preferably has an absolute value of a change in value after use with respect to the value before use of the minimum stiffness being 30% or less.
  • the double-sided uneven heating element has an outer shape of the double-sided uneven heating element, the shape of which is a flat shape, an eye mask shape, a bowl shape, a bowl shape, a rounded rectangular shape, a rectangular shape, a rounded square shape, a square shape, Is one selected from oval, boomerang, maggot, star, wing, nose, lantern, and foot shape, and preferably has irregularities on both sides.
  • the double-sided uneven heating element has a state in which the heating element can be taken out into a non-breathable storage bag. It is preferable to be enclosed in a state!
  • the double-sided uneven heating element is enclosed in a state in which the heating element is folded into two with the ventilation surface inside and can be taken out into a non-breathable storage bag. Double-sided uneven heating element as described in 2.
  • the method of using the double-sided uneven heating element according to the present invention is that the segment heating part having the exothermic composition molded body that generates heat upon contact with air (oxygen) is the striped part with the interval as the interval part where the part is the seal part.
  • the other side (non-adhesive surface) has a structure having no adhesive part, and the breathable adhesive surface of the heating bag is attached to the inside of the underwear, and the uneven surface, which is a non-adhesive surface, is applied to the skin. It is preferable to use it in contact.
  • the heating element preferably has a change in minimum bending resistance before and after the heat generation of the heating element of 30% or less.
  • the cuts are staggered cuts.
  • the double-sided uneven heating element of the present invention is not easily bent except in the direction having the minimum bending resistance, and has a direction of bending ease, and has the maximum bending resistance in a direction almost perpendicular to the minimum bending resistance. Because it has a bending resistance and has a structure that is extremely easy to bend in only one direction compared to other directions, it has the flexibility that there is no change in the minimum bending resistance before handling, immediately before heat generation, during heat generation, and after heat generation ends. Can be maintained at all times, so that a sufficient thermal effect can be obtained while keeping fit.
  • the double-sided uneven heating element of the present invention can always maintain sufficient flexibility even after use from the beginning, and the concave part of the dividing part and the convex part of the dividing heat part are provided in stripes. Both sides of the heating element are uneven stripes that can be used along the body part, exhibiting sufficient thermal effect and suppressing heat storage, resulting in redness, colic, swelling, It has become possible to obtain excellent effects as a highly safe heating device that is extremely resistant to rashes.
  • the double-sided uneven heating element of the present invention allows the human body to be warmed by directly contacting the skin without attaching the double-sided uneven heating element to the skin.
  • the problem with the uneven heating element was that it was cold immediately after the double-sided uneven heating element was applied, itching and rash occurred on the applied area, pain when the double-sided uneven heating element was peeled off, and sweating In this case, all the problems such as the double-sided uneven heating element falling off and sweat being not absorbed causing discomfort were all solved.
  • stable heat generation characteristics can be maintained regardless of changes in body posture during use.
  • the double-sided uneven heating element can be efficiently transmitted to the skin, the double-sided uneven heating element can be made light and thin, and a desired duration can be obtained without a sense of incongruity when worn. Can now.
  • FIG. 1 (a) is a plan view showing an example of a heating element of the present invention.
  • FIG. 2 (a) and (b) are explanatory sectional views showing an example of flexibility comparison between the uneven heating element of the present invention and a conventional heating element.
  • FIG. 3 (a) is a plan view showing an example of the relationship between a heat-generating composition molded body made of the moldable excess water heat-generating composition of the present invention and a substrate.
  • B It is the same sectional view.
  • C It is a top view which shows an example of the relationship between the exothermic composition molded object which becomes the sheet-like exothermic piece of this invention, and a base material.
  • D It is the same sectional view.
  • E It is sectional drawing which shows an example of the relationship between the exothermic composition molded object which consists of a sheet-like exothermic piece of this invention, and a base material.
  • (F) It is a top view which shows an example of the relationship between the heat_generation
  • (G) It is sectional drawing of the same VV.
  • (H) It is sectional drawing which shows another example of the relationship between the heat-generating composition molded object which consists of a heat-generating sheet with a hole of this invention, and a base material.
  • (I) It is a top view which shows another example of the relationship between the exothermic composition molded object which consists of a heat_generation
  • (J) It is a sectional view of U-U.
  • (K) It is sectional drawing which shows another example of the relationship between the heat-generating composition molded object which consists of a heat generating sheet with a hole of this invention, and a base material.
  • M) It is sectional drawing of TT.
  • N It is a top view which shows another example of the relationship between the base material of a heat_generation
  • Sectional view of S-S. It is sectional drawing which shows another example of the heat generating body of this invention.
  • FIG. 4 (a) is a plan view showing an example of the relationship between a heat-generating composition molded body made of the moldable excess water heat-generating composition of the present invention and a substrate.
  • (C) Formability of the present invention is a plan view showing an example of the relationship between a base material of a heat generating composition comprising a surplus water heat generating composition and a substrate.
  • D It is sectional drawing of the same RR.
  • FIG. 5 is a cross-sectional view showing another example of the heating element of the present invention.
  • FIG. 6 is a cross-sectional view showing another example of the heating element of the present invention.
  • FIG. 7 is a plan view showing another example of the heating element of the present invention.
  • FIG. 8 is a plan view showing another example of the heating element of the present invention.
  • FIG. 9 is a cross-sectional view showing another example of the heating element of the present invention.
  • FIG. 10 is a plan view showing another example of the heating element of the present invention.
  • FIG. 11 (a) to (f) are plan views showing other examples of the heating element of the present invention.
  • FIG. 12 is a plan view showing an example of the outer shape of the heating element of the present invention.
  • composition molded body comprising 20 sheet-like heating pieces
  • Exothermic composition molded body comprising a heat-generating sheet with 21 holes
  • a detachable mounting means (fixing means) on at least a part of the exposed portion of the double-sided uneven heating element of the present invention, but the removable mounting means (fixing means) is an adhesive. If it is a layer,
  • the heating element has a pressure-sensitive adhesive layer on the air-permeable side of the heating element, and the pressure-sensitive adhesive layer is mainly (1) a type that is provided in the section heating section, (2) a type that is provided in the section, (3) a heating element of the type that directly contacts the skin of any of the types provided in the section heating section and the section;
  • the heating element has a pressure-sensitive adhesive layer on the non-breathable surface of the heating element, and the pressure-sensitive adhesive layer is mainly (4) a type that is provided in the section heating unit, and (5) a type that is provided in the section.
  • Ward There is a type of heating element that is in direct contact with the skin of any type provided in the partial heating section and the sorting section. It is preferable that the fixing means can be removed.
  • the pressure-sensitive adhesive of the present invention is a pressure-sensitive adhesive.
  • the packaging material on the side of the double-sided uneven heating element of the present invention that touches the body can contain a functional material.
  • the segmented heat generating portion of the present invention is "striped" means that a plurality of segmented heat generating portions are spaced in stripes (elongated and continuous) (parallel lines, parallel curves, etc.) It is provided.
  • One streak is preferably composed of one section heat generating portion.
  • the section heating section and section section may be linear or curved! /.
  • one streak may be composed of two or more divided heat generating portions and one or more divided portions.
  • T is T ⁇ 2 X S, preferably ⁇ 2.5 X S.
  • ⁇ is ⁇ , preferably ⁇ 0.5 XT.
  • streaks composed of segmented heat generating portions in parallel stripes (vertical stripes, horizontal stripes, diagonal stripes, vertical wave stripes, horizontal wave stripes, diagonal wave stripes, etc.).
  • the minimum bending resistance of the double-sided uneven heating element of the present invention is usually 100 mm or less, preferably 1 to 100 mm, more preferably 1 to 80 mm, and further preferably 1 to 50 mm. More preferably, it is 5-50 mm, More preferably, it is 5-40 mm, More preferably, it is 5-30 mm, More preferably, it is 5-20 mm.
  • the minimum bending resistance of the double-sided uneven heating element of the present invention is 60 or less, preferably 1 to 60, more preferably 1 to 50, still more preferably 1 to 40, More preferably 1 ⁇
  • the minimum bending resistance ratio of the double-sided uneven heating element of the present invention is 60 or less, preferably 1 to
  • the change in the minimum bending resistance before and after the heat generation of the double-sided uneven heating element of the present invention is 30% or less, preferably 0 to 30%, more preferably 0 to 20 %, More preferably 0 to 10%, still more preferably 0 to 5%, and still more preferably 0%.
  • the double-sided uneven heating element of the present invention various sizes can be adopted as the size of the divided heat generating portion and the divided portion, and sizes of long, short, wide and narrow can be adopted in length and width, and they can be combined.
  • Various stripe-shaped heat generating portions can be employed.
  • the perforated perforated heating element according to the present invention is provided with a perforated perforation, and when used, this double-sided uneven heating element can be used in several ways.
  • Preferable sizes of the segmented heat generating portion or the heat generating composition molded body are as follows.
  • the diameter is preferably about 5 mm to about 60 mm, more preferably 5mn! -50 mm, more preferably 10 mm to 40 mm, and even more preferably 20 mm to 30 mm.
  • the height is preferably lmm or more and less than 24mm, more preferably lmm to 20mm, and even more preferably 1.5mn! ⁇ 10mm, more preferably 3mn! ⁇ 9mm, more preferably 4mn! -8 mm, more preferably 5-7 mm.
  • the width is preferably lmm to less than 25mm, more preferably 5mm to 20mm, and even more preferably 5mn! ⁇ 15mm, more preferably 5mn! ⁇ 10mm.
  • the height is preferably 0.1 mm to 10 mm, more preferably 0.5 mn! -10 mm, more preferably 1 mm to 10 mm, and even more preferably 2 mm to 10 mm. Further, the length is preferably 5 mm to 300 mm, more preferably 5 mm to 200 mm, more preferably 5 mm to 100 mm, still more preferably 20 mm to 150 mm, and further preferably 30 mm to: L OOmm is there.
  • the surface area is not limited as long as it has a function as a segmented heat generating portion, but is preferably about 50 cm 2 or less, more preferably about 40 cm 2 or less, still more preferably less than about 25 cm 2 , preferably less than 20 cm 2.
  • the heat generating composition molded body that is the heat generating composition molded body occupation region The volume ratio between the volumetric product and the volume of the exothermic part that is the exothermic composition storage area is usually 0.6 to 1, preferably 0.7 to 1, more preferably 0.8 to 1. More preferably, it is 0.9 to 1.
  • the width of the section is not limited as long as the section heat generating section can be provided at intervals, but preferably 0.1 lmn! ⁇ 50mm, preferably 0.3mn! ⁇ 50mm, more preferably 0.3mn! ⁇ 50mm, more preferably 0.3mn! ⁇ 40mm, more preferably 0.5mn! -30 mm, more preferably 1 mm-20 mm, and more preferably 3 mm: L Omm.
  • the total area of the divided heat generating portions is not limited, but preferably, the total area of the divided heat generating portions is 50 to 85% with respect to the entire surface of the heat generating surface of the heating element, more preferably. 50-70%.
  • the shape of the segmented heat generating portion includes a continuous stripe shape and a discontinuous stripe shape as shown in FIGS.
  • the width of the section In order to have a number of partial stimulating elements and to expect a comfortable thermotherapy, it is preferable to set the width of the section to 3.5 to: LOmm. It is preferable to set the ratio of the width of the partition and the width of the partition part (air layer part) to 1: 1 to 3: 1.
  • the ratio of the width of the section heating section and the section section (air layer section) is not limited, but 1: 1 to 3: A range of 1 is preferred.
  • the same thermal effect as in the case of the entire single heat generating portion can be obtained, and the wearability is sufficient, and redness and the like can be more effectively prevented. That is, as a result of practically securing the adhesive strength / thermal effect, suppressing heat accumulation, further improving the effect of preventing redness and the like, and suppressing the retention of sweat, it is possible to more effectively prevent stuffiness and peeling of the sheet.
  • the double-sided uneven heating element of the present invention can have various shapes * arrangements according to applications in which all the divided heat generating portions and their intervals (divided portions) do not need to have the same dimensions.
  • the section heat generating portion may be formed by making the density in the central portion rougher than the outer peripheral portion of the sheet surface. Further, if the number of the divided heat generating portions is 2 or more, the restriction is preferably 3 or more, more preferably 4 or more.
  • the exothermic composition part molded body means both the exothermic composition part molded body and the exothermic composition compressed body which is a compressed exothermic composition molded body.
  • the segment heat generating portion having the exothermic composition molded body and the segment excluding the exothermic composition molded body! / ⁇ , the base portion and the partition portion being the sealing portion of the packaging material as the covering material are linearly alternated. Since it is repeated, it is oriented in the direction of bending, and it is in the continuum, so that the section bends preferentially over the section heating section while directing the section as a hinge between the section heating sections that are less rigid. With this configuration, it is possible to set the direction for ease of bending, improve handling, dramatically improve the fit to a human body with a curved two-dimensional surface, and greatly reduce the distortion of the heating element due to heat generation.
  • the flexibility (minimum stiffness) of the heating element is basically the same before, during and after the heat generation! /
  • the double-sided uneven heating element of the present invention may have extensibility and / or stretchability.
  • the double-sided uneven heating element having extensibility is not limited as long as it can be extended, such as an elastomer or rubber material. It is preferable that an extensible material, a stretchable material, a material using the material, a material with alternate notches, an alternate notch imparting force, or the like is also configured.
  • the stretchable notched double-sided uneven heating element extends in a direction substantially perpendicular to the longitudinal direction of the cut. It is sufficient that at least a part of the heating element extends. In particular, it is preferable that at least a part of the heating element expands and contracts.
  • the stretchable double-sided uneven heating element of the present invention has no limitation on the elongation rate, but there is no limit if the force elongation rate exceeds 1, but it depends on the application.
  • it is 1.0 05 to 10, more preferably 1.01 to 10, more preferably 1.01 to 5, more preferably 1.01 to 5, and still more preferably 1. 01 to 3, more preferably 1.01 to 2, more preferably 1.02 to 2, still more preferably 1.03 to 2, and even more preferably 1.04 to 2. Yes, more preferably 1. 05-2.
  • the extensibility of the present invention means that when an external force is applied, at least a part is longer than the length before the external force is applied in the direction in which the external force is applied, and the external force is removed. It doesn't matter how long it is after. Extensibility includes elasticity.
  • the stretchability of the present invention means that when an external force is applied, it stretches, and when the external force is removed, it becomes shorter than the length when stretched.
  • the degree of shortening is displayed with a shortening rate, there is no limit if the shortening rate exceeds 1, but depending on the application, it is preferably 1.005 to 10 Yes, more preferably ⁇ 1.01 to 10, more preferably ⁇ or 1.01 to 5, more preferably ⁇ 1.01 to 5, more preferably 1. 01 to 3. More preferably, it is 1.01-2, more preferably ⁇ or 1. 02-2, more preferably ⁇ or 1. 03-2, more preferably ⁇ or 1. It is 04-2, More preferably, it is 1.05-2.
  • a preferable example is 3NZ50 mm or more.
  • Fig. 12 shows an example (excluding the shape of the section heating part in the figure).
  • A) is a flat shape
  • (b ) Is an eye mask shape
  • (c) (r) (s) is a saddle shape
  • (d) is a saddle shape
  • (e) is a rounded rectangular shape
  • (f) is a rectangular shape
  • (g) is a rounded square shape
  • ( h) is square
  • (i) is oval
  • (j) is boomerang
  • (k) is starball
  • (1) star
  • (m) (n) is airfoil
  • (o) is nose Shape
  • (p) (q) is a lantern
  • (t) (u) is a foot.
  • the airfoil is suitable around the neck and shoulders.
  • Perforations (perforated cuts), different notches, perforations with V-notches (perforated cuts with V-notches) Heat generation with through notches such as staggered notches with V notches
  • the body is also included in the planar shape of the heating element of the present invention.
  • notch part such as V notch
  • the shape of the heating element described in this specification is also described in the present invention, and the shape of the heating element described above is modified as a basic shape.
  • a region corresponding to a corner such as an exothermic composition molded body, a heat generating portion, a segmented heat generating portion, a heat generating body, a seal portion, a through hole, a concave portion, or a convex portion is substantially arc-shaped (R). May be provided.
  • the radius of curvature of the substantially arc shape is not limited, but is preferably 0.1 to 20 Omm, more preferably ⁇ to 0.3 to LO. Omm, Preferably ⁇ or 0.1 to 5. Omm, more preferably ⁇ or 0.3 to 5. Omm, more preferably ⁇ or 0.3 to 3. Omm, more preferably 0.5-2. Omm.
  • the segmented heat generating part is formed in a strip shape with the segmented heat generating part including the exothermic composition molded body and the segmented part which is a seal part not including the heat generating composition as an interval.
  • the details of the effect of suppressing redness and numbness by doing so are unclear, but the present inventor estimates as follows.
  • Hyperthermia treatment aims to promote circulation and relieve stiff shoulders and muscle pain by supplying heat to the affected area and warming it.
  • a heating element formed with a single exothermic part is left on the affected part for a long time, heat storage occurs, and if the skin surface temperature exceeds a certain critical temperature (about 42-43 ° C), blood As it becomes difficult to flow, the cooling effect of the blood flow is reduced and heat storage is further increased, resulting in redness treatment.
  • the skin temperature becomes higher than the critical temperature when the temperature of the double-sided uneven heating element rises. As described above, it is considered that heat storage proceeds further as blood flow decreases, and redness and the like become more prominent.
  • the heat generating part is formed in a stripe shape using the segmented heat generating part, so that the heat supply from the heat generating part is changed to the part where the heat supply is large (the segmented heat generating part). ) And small parts (separation part), and the separation part passes the air layer part from the outside. It becomes a ventilating passage. For this reason, excess heat that causes heat storage is dissipated to the outside through this air passage, so that heat storage can be suppressed within the surface of the double-sided uneven heating element, and heat generation, medical treatment, etc. can be prevented. By providing this ventilation path, it is considered that excess heat is effectively released.
  • FIG. 1 is a plan view showing an example of a double-sided uneven heating element 1 of the present invention, in which a striped exothermic composition molded body 3 formed from a moldable excess water-generating composition is formed by a base material 15 and a coating material 14.
  • a double-sided concavo-convex flexible heat generating element 1 having eight strip-shaped heat generating parts 4 sandwiched and enclosed between them.
  • a section 6 exists between the section heating section 4 and the section heating section 4, and the extension region in the longitudinal direction of the section 6 is defined as a section section extension section 5.
  • the length of the section heating section 4 is 5 mm or more and 300 mm or less, the width is 1 mm or more and less than 25 mm, the height is 0.5 mm or more and less than 10 mm, and the length relative to the width is 2.0 or more and 60 or less.
  • the width of the section was 0.1 lmm or more and 100mm or less, the minimum bending resistance of the heating element was 100mm or less, and the minimum bending resistance ratio was 60 or less.
  • the exothermic composition molded body 3 is sandwiched between a coating material 14 having a breathable film force that is a laminate of a nonwoven fabric and a porous film and a base material 15 having a non-breathable film force that is a polyethylene film with an adhesive layer.
  • the periphery of the two films is heat-sealed, and the pressure-sensitive adhesive layer 10 is provided as a fixing means on the non-breathable film of the base material 15.
  • S is the stripe direction of the segmented heat generating portion
  • L is the direction perpendicular to the stripe direction of the segmented heat generating portion
  • L is the longitudinal direction of the double-sided uneven heating element 1.
  • FIG. 2 (a) is an explanatory cross-sectional view illustrating the flexibility of the double-sided uneven heating element of the present invention using the double-sided uneven heating element of FIG.
  • the uneven heating element 1 is placed on the support base 18 with the pressure-sensitive adhesive layer 10 facing up, and is pushed toward the end of the support base statically to support the end of the support base 10.
  • the tip of the double-sided uneven heating element 1 was attached to the base wall, the distance protruding from the end of the support 10 of the double-sided uneven heating element 1 was observed.
  • the double-sided uneven heating element 1 is a force in which the portion protruding from the end portion of the support base 10 hangs down along the end wall of the support base 10 and the heat generation portion in FIG.
  • a commercially available body warmer consisting of a single body remained almost straight even when almost the entire heating element was extended to the end of the support base.
  • FIG. 2 (c) is a plan view of a conventional heating element having a heating part 19 made of one continuous body. This shows that the flexibility and flexibility of the double-sided uneven heating element 1 of the present invention are excellent.
  • Figures 3 (a) to 3 (o) show a plan view and a cross-sectional view of the exothermic composition molded body laminated on the substrate.
  • a double-sided uneven heating element has a structure in which these are coated with a covering material and the peripheral portion of the exothermic composition molded body 3 and the peripheral portion of the heating element are heat-sealed. The space can be heat sealed as desired! ,.
  • FIG. 3 (a) is a plan view showing an example in which a heat generating composition formed body 3 obtained by molding a moldable excess water heat generating composition on a base material 15 is laminated.
  • Fig. 3 (b) is a sectional view of the same.
  • FIG. 3C is a plan view showing an example in which the exothermic composition molded body 20 made of sheet-like exothermic pieces is laminated on the base material 15.
  • Fig. 3 (d) is a sectional view of the same.
  • FIG. 3 (e) is a cross-sectional view showing another example in which a heat generating composition molded body 20 made of a sheet-like heat generating piece is laminated on a base material 15 via a fixing layer 24 made of an adhesive.
  • FIG. 3 (f) is a plan view showing an example in which a heat generating composition molded body 21 made of a heat generating sheet with holes is laminated on a base material 15.
  • Fig. 3 (g) is a cross-sectional view of V-V.
  • FIG. 3 (h) is a cross-sectional view showing another example in which a heat generating composition molded body 21 made of a heat generating sheet with holes is laminated on a base material 15 via a fixing layer 24 made of an adhesive.
  • FIG. 3 (i) shows a notched holed heat generating sheet with notches 25 provided at both ends in the short direction (strip direction), which is the extension direction of the hole of the holed heat generating sheet 26 on the base material 15.
  • FIG. 6 is a plan view showing an example in which the heat generating composition molded bodies 21 are stacked.
  • Figure 3 (j) shows the same U-U cross section.
  • FIG. 3 (k) shows a notch-formed heat-generating sheet with notches provided in both ends in the short direction (strip direction), which is the direction of extension of the holes of the heat-generating sheet 23 with holes on the base material 15.
  • FIG. 6 is a cross-sectional view showing another example in which the heat generating composition molded body 21 is laminated via a fixing layer 24 made of an adhesive.
  • FIG. 3 (1) is a plan view showing an example in which the exothermic composition molded body 22 composed of sheet-like exothermic pieces with holes is stacked on the base material 15.
  • Fig. 3 (m) is a cross-sectional view of TT.
  • FIG. 3 (n) shows a sheet with holes with notches with notches 25 provided on both ends in the short direction (strip direction), which is the extension direction of the holes in the sheet-like heating piece with holes on the substrate 15.
  • FIG. 3 is a plan view showing an example in which exothermic composition molded bodies 22 made of exothermic pieces are laminated.
  • Figure 3 (o) is a cross-sectional view of the same S-S.
  • each of the exothermic composition molded body 21 composed of the heat-generating sheet with a hole with a notch and the exothermic composition molded body 22 composed of a sheet-shaped exothermic piece with a hole with a notch is shown in FIGS. 3 (a) to 3 (e).
  • the exothermic composition molded body was created so that the end portions in the longitudinal direction of the section heat generating section 3 and the section heat generating section 20 shown in Fig. 1 would be connected to the adjacent section heat generating section 3 etc. to become a section heat generating section. It is a thing.
  • FIG. 4 (a) is a plan view of the breathable surface side showing another example of the double-sided uneven heating element 1 of the present invention, and is a striped heating composition in which the moldable excess water heating composition 2 is molded.
  • This is a double-sided uneven flexible heating element 1 having eight striped heating elements 4 in which a molded body 3 is sandwiched and enclosed between a base material 15 and a covering material 14.
  • the double-sided uneven heating element 1 is a striped adhesive layer on both ends of the breathable coating material 14 in the longitudinal direction, each section, section extension, side heat and part of the section heat. 10 is provided. It is a double-sided uneven heating element having a minimum bending resistance ratio of 50 or less.
  • FIG. 4 (b) is a cross-sectional view of the same R scale in which a separator 17 is attached to the adhesive layer 10 of the heating element 1 in FIG. 4 (a).
  • FIG. 4 (c) is a plan view of the breathable surface side showing another example of the double-sided uneven heating element 1 of the present invention, and the double-sided uneven heating element 1 of FIG. 4 (a) except for the adhesive layer. Is the same.
  • a mesh-like breathable pressure-sensitive adhesive layer 11 prepared by a melt blow method is provided on the breathable coating material 14 on the entire breathable surface side. It is a double-sided uneven heating element with a minimum bending resistance ratio of 50 or less.
  • Fig. 4 (d) is a cross-sectional view of QQ, with the separator 17 added to that of Fig. 4 (c).
  • the air-permeable adhesive surface 9 is a surface that is attached to the inside of an underwear or the like.
  • the non-adhesive surface packaging material having stripe-like irregularities is a surface that contacts the skin.
  • the breathable adhesive surface 9 is usually covered with a separator 17 or the like until it is used.
  • the heating element of the present invention is hermetically stored in a non-breathable outer bag until used.
  • the non-adhesive surface of the double-sided concavo-convex flexible heating element does not have an adhesive portion, and can be a water-absorbing packaging material or a packaging material having a good feel against the skin. So, the coldness just after pasting like a conventional direct heating type heating element, the pain when peeling the heating bag, the itching and rash of the pasted part does not occur, and the discomfort associated with sweating, A very good feeling of use can be obtained without the exothermic bag falling off due to perspiration.
  • it since it is used by attaching it to the inside of the underwear instead of attaching it directly to the skin, it is relatively easy to shift the wearing site during use if it is always kept in perfect contact. Because it can, burns can be eliminated and a relatively wide area can be warmed.
  • the pressure-sensitive adhesive layer of the double-sided uneven heating element is provided on the air-permeable surface side of the heating element, and the pressure-sensitive adhesive layer is mainly (1) a type provided in the section heating section, (2) in the section section. (3)
  • the heating element of the type where the adhesive layer is not in direct contact with the skin, which is one of the types provided in the section heating section and the section, is mainly mounted between the underwear and the skin. It is applied to a heating element that warms the human body and a method of using the heating element.
  • a plurality of exothermic composition molded bodies obtained by molding a formable water-containing heat generating composition that generates heat upon contact with oxygen in the air are laminated on a substrate at intervals. Covering material is coated, and the peripheral portion of the exothermic composition molded body is sealed and sealed between the base material and the covering material to form a divided heat generating portion, and a plurality of divided heat generating portions are sealed portions.
  • the double-sided uneven heating element is constructed such that the breathable adhesive surface is attached to the inside of the underwear and the non-adhesive surface is used in contact with the skin.
  • a packaging material having air permeability and an adhesive layer is used for the air-permeable adhesive layer surface of the uneven heating element.
  • an adhesive layer is provided on the outer surface of the breathable packaging material by partially applying the adhesive by spraying, coating, or printing using a melt blow method, etc., so that the air permeability and the adhesiveness are maintained on one surface. Is done.
  • the double-sided uneven heating element of this type of the present invention is fixed to the underwear by attaching the air-permeable adhesive surface of the double-sided uneven heating element to the inside of the underwear between the underwear and the skin.
  • a heating element characterized in that the breathable adhesive surface is directed to the outside of the human body to maintain a stable breathable state, and the non-adhesive surface is brought into contact with the skin to directly warm the human body.
  • the heating element of the present invention warms the human body by holding the double-sided uneven heating element between the underwear and the skin, and one side (breathable adhesive face) of the double-sided uneven heating element has air permeability.
  • the adhesive layer With the adhesive layer, the other side (non-adhesive surface) has a structure without the adhesive layer, the breathable adhesive surface of the double-sided uneven heating element is affixed to the inside of the underwear, and the non-adhesive surface is the skin It can be used in contact with.
  • Underwear in the present invention means clothing that is worn directly on the human body, and in the case of wearing a shirt, a blouse, a polo shirt, etc., in addition to clothing usually called underwear. , They are also included in the underwear.
  • the double-sided uneven heating element of the present invention has air permeability on one side (breathable adhesive surface) of the double-sided uneven heating element, and an adhesive layer provided on the other side (non-adhesive side).
  • the pressure-sensitive adhesive layer is not provided, and the double-sided uneven heating element is attached between the underwear and the skin by attaching a breathable adhesive surface to the inside of the underwear. This prevents the adhesive layer of the heating element on both sides from coming into contact with the skin, causing itching or irritation on the skin surface during wearing, without feeling cold when worn or feeling pain when peeling off. Disappear , And the discomfort associated with pasting can be resolved.
  • the breathable surface of the double-sided uneven heating element is affixed to the inside of the underwear, that is, the breathable surface faces the outside of the human body, and the breathability is improved when the skin surface or the like adheres. Since it is not in contact with the obstructing surface, the desired heat generation characteristics can be maintained without being affected by the posture or movement during wearing. In addition, since the heat of the double-sided uneven heating element can be efficiently transmitted to the body without being applied directly to the skin, the amount of the moldable hydrous heat generating composition of the double-sided uneven heating element can be reduced, and Thus, the desired duration can be obtained.
  • the packaging material on the surface of the double-sided uneven heating element that contacts the skin can be set relatively arbitrarily because it does not have an adhesive layer, For example, it becomes possible to make any material and any shape in consideration of the touch such as the touch, the heat transfer property, the water absorption, etc., and the uncomfortable feeling during use can be eliminated.
  • the base material of the present invention is not limited as long as it functions as a packaging material for a heating element as a packaging material constituting a covering material, a ventilation control material, or a support.
  • non-breathable materials, breathable materials, water-absorbing materials, non-water-absorbing materials, non-stretchable materials, stretchable materials, stretchable materials, non-stretchable materials, foamed materials, non-foamed materials, non-heat examples thereof include a sealing material, a heat sealing material and the like, and can be appropriately used depending on a desired application in a desired form of a composite such as a film, a sheet, a nonwoven fabric, a woven fabric, and a laminate thereof.
  • the base material of the present invention is a packaging material on which the exothermic composition molded body is laminated, and the coating material is a packaging material covering the same, and it does not matter whether it is air permeable or non-breathable.
  • the substrate is made of a non-breathable film or sheet
  • the covering material may be a force that can also be a breathable film, sheet, or nonwoven fabric, or both of them may be breathable.
  • the heating element of the present invention is at least partially breathable.
  • the packaging material used for the heating element of the present invention has been disclosed in the past or is commercially available, or any known packaging material used for discarded body warmers or heating elements. You can select and use.
  • the air permeability of the heat generating part and the section heat generating part is preferably 50gZm2Z24hr ⁇ : LO, 000gZm2Z24hr in terms of moisture permeability according to the Lissi method (JIS K007129A method), more preferably Is 100gZm2Z24hr to 5,000gZm2Z24hr, more preferably 100gZm2Z 24hr to 600gZm2Z24hr, still more preferably 150gZm2Z24hr to 500gZm2Z24hr.
  • the packaging material constituting the base material of the present invention is not limited as long as it functions as a packaging material for a heating element.
  • non-breathable materials breathable materials, breathable materials, water-absorbing materials, non-water-absorbing materials, non-stretchable materials, stretchable materials, stretchable materials, non-stretchable materials, foamed materials, non-foamed materials, non-packaging materials
  • heat-sealable materials heat-sealable materials, and the like, and they can be appropriately used depending on the desired application in desired forms such as films, sheets, nonwoven fabrics, woven fabrics, and laminates thereof.
  • the packaging material used for the heating element according to the present invention may be any packaging material that has been disclosed in the past or is commercially available, or that is used for a well-known disposable body warmer or heating element. It can be appropriately selected and used.
  • the extensibility of the present invention is not limited, but it depends on the use. However, the extensibility is not limited as long as it exceeds 1, but it depends on the use, but preferably 1.005 to 10 More preferably ⁇ or 1.01 to 10, more preferably ⁇ or 1.01 to 5, more preferably ⁇ or 1.01 to 5, more preferably 1. 01 to 3, more preferably 1. 01 to 2, even more preferably ⁇ 1. 02 to 2, more preferably ⁇ or 1. 03 to 2, more preferably ⁇ . 1.04 to 2, more preferably ⁇ 1.05 to 2.
  • the extensibility of the present invention means that, when an external force is applied, at least a part is longer than the length before the external force is applied in the direction in which the external force is applied.
  • the length does not matter. Extensibility includes elasticity.
  • the elongation rate means a quotient obtained by dividing the length after elongation by the length before elongation.
  • the rate of elongation of the heating element the length after extension of the heating element ⁇ the length before extension of the heating element. If it exceeds 10, the opening of the mesh becomes too large, and the tensile strength may decrease. Alternating cuts usually have the function of imparting extensibility and / or stretchability
  • the stretchability of the present invention means that when an external force is applied, it stretches, and when the external force is removed, it becomes shorter than the length when stretched.
  • the shortening rate is not limited as long as it exceeds 1, but it depends on the application, but preferably 1.005 ⁇
  • a preferable example is 3NZ50 mm or more.
  • the packaging material constituting the coating material of the substrate of the present invention is a molded product such as a film or a sheet, a nonwoven fabric, a woven fabric, a knitted fabric, etc., and a non-water absorbent packaging material is a packaging material having water absorption.
  • a non-water-absorbing packaging material include polyolefins such as polyethylene and polypropylene, polyamides such as polyester and nylon.
  • the water-absorbent packaging material comprises at least one selected from cotton, silk, hemp, wool, polyacrylonitrile-based synthetic fiber, polyamide-based synthetic fiber, polybulal alcohol-based synthetic fiber, acetate fiber, triacetate fiber, and recycled fiber
  • Non-woven fabrics, woven fabrics and knitted fabrics Absorbent packaging materials with a water absorption rate (measurement method: JIS L1096) of 2% or more, and a water absorption rate (measurement method: JIS L1096) selected from the above fibers is 2% or more.
  • Non-woven fabrics or woven fabrics having the water-absorbing fibers as the main component and highly water-absorbing packaging materials can be mentioned.
  • super absorbent packaging material super absorbent polymer powder, zeolite, silica gel, or non-woven fabric holding diatomaceous earth is coated with super absorbent polymer.
  • a non-woven fabric containing fibers using the material of the packaging material a non-woven fabric containing hollow fibers having a large number of micropores on the surface, or a non-woven fabric containing fibers having a large number of cross-sectional or attacking layers
  • An example is a packaging material.
  • the non-adhesive surface packaging material is preferably a soft and flexible material.
  • Suitable materials for the non-adhesive surface packaging material are not limited, but examples include molded film sheets, woven fabrics, knitted fabrics, and non-woven fabrics.
  • Woven fabrics, knitted fabrics, and non-woven fabrics are manufactured through processes such as fiber spinning, spinning, air-based, thermally integrated, wet-type, melt-blowing, etc. Contains air.
  • Examples of the material composition of the non-adhesive packaging material include cotton, polyester, polyethylene, polypropylene, and nylon.
  • the packaging material for the adhesive surface is a soft, flexible, good-feeling, non-irritating packaging material for skin, is a water-absorbing packaging material, or a packaging material that combines these properties.
  • Examples of the packaging material for the adhesive surface include, but are not limited to, molded films and sheets, woven fabrics, knitted fabrics, and nonwoven fabrics.
  • Woven fabrics, knitted fabrics, and non-woven fabrics are manufactured through processes such as fiber spinning, spinning, air-based, thermally integrated, wet-type, melt-blowing, etc. Contains air.
  • the material composition of the adhesive packaging material is cotton, silk, hemp, wool, polyacrylonitrile-based synthetic fiber, polyamide-based synthetic fiber, polybutyl alcohol-based synthetic fiber, acetate fiber, triacetate fiber, and recycled fiber, polyester, polyethylene, Examples include polypropylene and nylon.
  • the air permeable film used in the present invention for example, a porous film using polyethylene, polypropylene, a polyfluorinated titanium film or the like is preferably used, and the pore diameter is determined according to the required air permeability.
  • the ventilation rate is designed in relation to the heat generating agent used depending on the required heat generation and temperature.
  • the porous film is a film having fine through-holes having a maximum pore diameter of about 0.001 to 20 m by the methanol bubbling method.
  • the through-holes are provided by biaxially extending a synthetic resin film.
  • an inorganic fine powder such as calcium carbonate dispersed in melted polyethylene, polypropylene, etc., then extruded into a film, and the resulting film is further stretched to provide through holes, etc.
  • a packaging material made of a nonwoven fabric in which fibers are laminated and thermocompression-bonded to control air permeability, such as a polyethylene film or a specific air permeability film such as a perforated hole can be used.
  • non-breathable packaging material a single-layered or laminated film, sheet, or foam may be used as long as it is a packaging material for a film or sheet that does not substantially transmit oxygen.
  • non-breathable packaging materials that have been used for chemical ability cards and non-breathable storage bags (outer bags) can also be used.
  • polyethylene, polypropylene, polybutadiene and other polyolefins, polyvinyl chloride, polysalt vinylidene, polyester, polyether, polysulfone, polyamide, and a thickness of about 20 ⁇ m to lmm or EVOH Applying ethylene (bule alcohol copolymer, ethylene acetate butyl copolymer), biaxially stretched polybulal alcohol film, polyvinylidene chloride coated film, polypyridene chloride to films such as polypropylene Laminated thermoplastic film such as polyvinylidene coated film, etc. Films, sheets, and coatings made of resin, and those in which metal (including semiconductor) compounds such as silicon oxide are laminated, aluminum, etc. Metal foil is used by laminating the metal foil with the film or sheet and using them. Composites can be cited as an example. .
  • the air-permeable pressure-sensitive adhesive surface has air permeability and is provided with an adhesive layer.
  • the pressure-sensitive adhesive used for the pressure-sensitive adhesive layer has the desired adhesive strength, does not cause transfer to the underwear, does not adversely affect the human body and the environment, and is used during long-term storage until used as a fever bag. Anything that does not change quality can be used.
  • the surface of the pressure-sensitive adhesive layer is usually coated with a separator or the like so as not to stick to other objects until it is used.
  • the non-adhesive surface in contact with the skin is not provided with an adhesive layer.
  • the material can be appropriately set according to desired properties such as touch, thermal conductivity, water absorption against sweat and the like.
  • a non-breathable film such as polyethylene film or polypropylene film, or a packaging material in which a polyethylene film or polypropylene film is bonded to a nonwoven fabric or a woven fabric, and a packaging material in which these surfaces are brushed.
  • the non-adhesive surface packaging material is mainly composed of fibers having a water absorption rate of 2% or more so that sweat is absorbed when perspiration occurs. It is preferable to be composed of packaging material using non-woven fabric or woven fabric.
  • Water-absorbing fibers with a water absorption rate of 2% or more include cotton, silk, hemp, wool, polyacrylonitrile-based synthetic fibers, polyamide-based synthetic fibers, polybulol alcohol-based synthetic fibers, acetate fibers, triacetate fibers, and recycled fibers. Etc. can be illustrated. Furthermore, as a nonwoven fabric excellent in water absorption, a nonwoven fabric in which a highly water-absorbing polymer is held on the nonwoven fabric can be used. In addition, the nonwoven fabric or woven fabric which has these fibers as a main component is also a thing with a comparatively favorable touch with respect to skin.
  • the hydrophilic nonwoven fabric used in the present invention is, for example, a hydrophilic material such as rayon, cotton, pulp, or a mixture and combination thereof.
  • the thickness of nonwoven fabric is usually 100m ⁇ lmmfe degree &.
  • a highly water-absorbing packaging material with high sweat absorption can also be used as the non-adhesive surface packaging material.
  • a non-woven fabric including a fiber whose surface is coated with a highly water-absorbent resin a non-woven fabric including a hollow fiber having a large number of micropores on its surface, a cross-sectional shape having a large number of attacks or multiple layers, etc.
  • a non-woven fabric or the like containing a fiber having a capillary action is used.
  • a nonwoven fabric in which a water-absorbing inorganic compound is held in a packaging material having a non-adhesive surface, or a film may be used.
  • a nonwoven fabric in which a powder of diatomaceous earth, zeolite, silica gel or the like is held on a nonwoven fabric, a film in which a relatively large amount of powder of silica, alumina or the like is held in a synthetic resin such as polyethylene can be used.
  • antibacterial properties can be imparted to the non-adhesive surface packaging material as desired.
  • Antibacterial agents that can be used in the present invention have high safety without affecting the physiological functions of the human body, and do not produce harmful substances even when discarded.
  • Such antibacterial agents include various types such as inorganic, quaternary ammonia, guanidine, phenol, fatty acid ester, and natural products.
  • the antibacterial agent may be applied to and impregnated into a nonwoven fabric, woven fabric, film, paper, or other packaging material by the gravure roll method, dip roll method, It can also be attached by a method such as spraying or printing.
  • the air permeability of the double-sided uneven heating element is limited to the air-permeable adhesive surface.
  • the double-sided uneven heating element of the present invention does not exclude that the double-sided uneven heating element imparts air permeability to the packaging material on the non-adhesive surface of the double-sided uneven heating element.
  • the non-adhesive surface can be made breathable.
  • the heat generation characteristics are allowed to vary slightly, the non-adhesive surface can be made air permeable.
  • a breathable main body on the breathable adhesive surface of the double-sided uneven heating element is preferably 1Z2 or less, more preferably 1Z3 or less.
  • the air permeability of the air-permeable adhesive surface is appropriately adjusted in accordance with the amount of air flow.
  • the pressure-sensitive adhesive layer is uniformly dispersed on the air-permeable pressure-sensitive adhesive surface so that it can be applied to the underwear efficiently in a small area.
  • the breathable adhesive surface for example, the adhesive is partially printed in advance on the breathable packaging material, or the adhesive is applied to almost the entire surface of the non-breathable packaging material, and then the needle hole is opened to make it breathable. This method can also be used.
  • the air permeability on the side in contact with the body does not contact the body and is lower than the air permeability on the side.
  • the air permeability of the air-permeable adhesive surface means air permeability in a state where an adhesive is applied.
  • the air permeability of the heating element of the present invention is preferably the air permeability according to the Gurley method (JISP8117) in terms of the amount of oxygen diffused on the ventilation surface with and without the pressure-sensitive adhesive layer. Is 80 ⁇ 15,000 seconds ZlOOcc, more preferred ⁇ is 1,000 ⁇ 15,000 seconds ZlOOcc cc, more preferably 1,300 to 15,000 less / lOOcc, more preferably 1,300 to 10,000 seconds, ZlOOcc, more preferred ⁇ 5, 00-10,000 seconds ZlOOc c.
  • the heating element of the present invention when the heating element of the present invention is mounted between the skin and the undergarment, heat is transferred to the skin while the heating element is in contact with the skin.
  • the fixing means is not limited as long as it has a fixing ability capable of fixing the heating element to the required portion. Furthermore, the fixing means is preferably removable. Adhesive layers, key hooks, hook buttons, hook-and-loop fasteners, magnets, bands, strings, etc., which are generally used as the fixing means, and combinations thereof can be used arbitrarily. . In the case of a band, the adjustment fixing means may be further constituted by a combination of a hook-and-loop fastener and an adhesive layer. There are no restrictions on the installation method, installation location, installation pattern, etc. of the fixing means, and it is preferable to provide at least one part of the exposed part of the heating element as appropriate. Moreover, you may provide a separator to a fixing means as protection until it is used. The separator may be provided with a slit or the like so as to facilitate the peeling.
  • the fixing means of the present invention can be used by appropriately selecting fixing means (including attaching means that can be removed) that have been disclosed in the past, are commercially available, or are used for known disposable warmers and heating elements.
  • 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 pressure-sensitive adhesive layer is composed of a pressure-sensitive adhesive.
  • the adhesive has a double-sided uneven heating element. There are no restrictions as long as they can be used. Conventionally, chemical warmers, heating elements, and materials used in poultices, or technically disclosed ones can be used.
  • the double-sided uneven heating element provided so that the adhesive layer can removably attach the double-sided uneven heating element to at least one part of the exposed part of the double-sided uneven heating element
  • the adhesive material layer is a means for fixing the double-sided uneven heating element to the inner part of the user's clothes, and the B-side of the heating element is placed directly on the user's body.
  • the double-sided uneven heating element provided on the A-side of the above-mentioned divided heating part and provided so that the double-sided uneven heating element can be removably attached,
  • the pressure-sensitive adhesive layer is provided on each side of the double-sided uneven heating element and on both sides of the heating element by extending it to both ends of the heating element and at least both ends in the longitudinal direction of the heating element. Double-sided uneven heating element,
  • the pressure-sensitive adhesive layer includes a top region of each section heating part on one side of the double-sided uneven heating element, and extends to both ends of the heating element to extend to both ends of the heating element and at least the longitudinal direction of the heating element. Double-sided uneven heating element that is provided at both ends and is ventilated mainly from the side surface of the sectioned heating section,
  • Double-sided uneven heat generation in which the pressure-sensitive adhesive layer is provided on one side of the double-sided uneven heating element as a mesh-like breathable pressure-sensitive adhesive layer provided by a nozzle injection method such as a melt blow method or a curtain coating method.
  • 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 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 forms such as a pressure system, a non-hydrophilic pressure-sensitive adhesive, a mixed pressure-sensitive adhesive, a hydrophilic pressure-sensitive adhesive (Giel etc.) are used.
  • 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 a two-dimensional direction, such as moving in one direction or moving in a zigzag while drawing a circle in a string,
  • the thread-like pressure-sensitive adhesive gaps have air permeability or moisture permeability, or the foaming method of the adhesive or the layer formed by the melt blow method.
  • Examples of the pressure-sensitive adhesive constituting the non-hydrophilic pressure-sensitive adhesive layer include acrylic, urethane, rubber, silicon, polyisoprene, polyisobutene, styrene isoprene styrene (SIS), and styrene monoisoprene.
  • An adhesive such as a system can be used.
  • an acrylic or SIS system that can be hot-melt processed is preferably used.
  • SIS-based adhesives include styrene-based hot-polymers based on styrene butadiene styrene block copolymer (SBS), styrene isoprene styrene block copolymer (SIS), or hydrogenated types (S EBS, SIPS), etc.
  • SBS styrene butadiene styrene block copolymer
  • SIS styrene isoprene styrene block copolymer
  • S EBS hydrogenated types
  • the hydrophilic pressure-sensitive adhesive constituting the hydrophilic pressure-sensitive adhesive layer is not particularly limited as long as it has a hydrophilic polymer or a water-soluble polymer as a main component, has adhesiveness, and is hydrophilic as the pressure-sensitive adhesive. .
  • hydrophilic polymers such as polyacrylic acid
  • water-soluble polymers such as sodium polyacrylate polypyrrolidone
  • carboxymethylcellulose carboxymethyl Consists of cross-linking agents such as sodium cellulose cellulose, hydroxyethyl cellulose, dry aluminum hydroxide and metal aluminate metal salt
  • softeners such as glycerin and propylene glycol, excipients, water, etc.
  • Hydrophilic adhesives hydrophilic acrylic monomers such as (meth) acrylamide and hydroxyethyl acrylate, and (meth) acryl such as butyl (meth) acrylate and ethyl hexyl (meth) acrylate
  • alkyl methacrylates such as acrylonitrile and acrylic acid with (meth) acrylic acid alkyl esters such as butyl (meth) acrylate and ethyl hexyl (meth) acrylate using copolymers with acid alkyl esters as protective colloids
  • Wet surface adhesive emulsion type adhesives that are mixed copolymer and (meth) active
  • a wet surface adhesive emulsion type adhesive that is a copolymer mixture of a carboxylic acid monomer such as phosphoric acid and a (meth) acrylic acid alkyl ester such as butyl acrylate or ethyl (meth) acrylate.
  • 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 moisture permeability of the moisture-proof packaging material is not limited as long as moisture movement can be prevented as long as it does not affect the heat generation performance. in the moisture permeability by law), and preferably, at 2gZm 2 Zday less, more preferably 1. is a 0gZm 2 Zday less, or less and more preferably 0. 5gZm 2 Zday, more preferably 0.01 to 0.
  • 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, but a biaxially stretched polypropylene film, a metal vapor deposition film, a metal oxide vapor deposition film, a metal A foil laminate film is an example.
  • the non-air-permeable material 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.
  • the content of the reaction promoter such as sodium chloride and the water-absorbing polymer in the exothermic composition is set to 10 to You may adjust in the range of 40 weight%, Preferably it is 1.5-40 weight%, More preferably, it is 15-30 weight%.
  • 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.
  • No. 10-279466, JP-A-10-182408, and rubber-based adhesives described in Japanese Patent Application Laid-Open No. 2004-263054 and JP-A 2004-263055 are emulsion type adhesives having wet surface adhesion.
  • a water-based emulsion type adhesive having wet surface adhesion as disclosed in JP-A-2001-143294 is also useful, and is incorporated herein by reference in its entirety.
  • the method, pattern, and shape of the pressure-sensitive adhesive layer may be provided on the entire surface as long as the heating element can be fixed, or may be provided partially or intermittently. Examples include various patterns and shapes such as nets, stripes, dots and bands. A net-like (spider web) pressure-sensitive adhesive layer by the melt blow method is useful.
  • a hot-melt type pressure-sensitive adhesive material is heated and melted by blowing and developing through hot air, and an appropriate method such as a melt-blow method, a curtain spray method, or a gravure method is used.
  • a method may be used in which an active substance is made into a fiber or partially coated and spread and deposited on a nonwoven fabric or a porous film.
  • the covering material, the pressure-sensitive adhesive layer, and the separator constituting the double-sided uneven heating element at least one or a part thereof is a letter, a pattern, a symbol, a number, a pattern, a photograph, Any one or more of a picture and a coloring part may be provided.
  • the installation layer should be determined appropriately.
  • the coating material, the pressure-sensitive adhesive layer, and the separator constituting the double-sided uneven 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 is the other layer. And it is colored in a different color.
  • the exothermic composition molded body of the present invention is not limited as long as the exothermic composition molded body can be laminated on a substrate and has a segmented exothermic part.
  • a heat-generating composition molded body formed from a small heat-generating sheet or a sheet-like heat-generating piece can be mentioned.
  • the exothermic composition that can be used in the present invention is not limited as long as the double-sided uneven heating element of the present invention can be produced.
  • the exothermic composition contains iron powder, a carbon component, a reaction accelerator, and water as essential components, and easily It contains surplus water with a dynamic water value of 0.01 to 13.5, has a moldability of a molding degree of 5 or more, and moisture in the exothermic composition does not function as an air barrier layer.
  • a moldable surplus water exothermic composition that generates heat with a temperature increase of 5 ° C or more within 5 minutes after being left in air at 20 ° C is preferable.
  • the moldable excess water exothermic composition of the present invention includes a molding aid, a water retention agent, a water-absorbing polymer, a hydrogen generation inhibitor, a pH adjuster, an aggregate, and a functional substance.
  • Nonionics such as polyoxyethylene alkyl ethers, zwitterions, ions, cationic surfactants, hydrophobic polymer compounds such as polyethylene and polypropylene, organic silicon compounds such as dimethylsilicone, pyroelectrics Substances, far-infrared radiation materials such as ceramics, negative ion generators such as tourmaline, exothermic aids such as FeCl, iron and iron such as silicon and aluminum
  • Moisturizers such as other metals, metal oxides other than iron oxide such as manganese dioxide, acidic substances such as hydrochloric acid, maleic acid and acetic acid, fibrous materials such as pulp, fertilizer components such as urea, glycerin and D-sorbitol It may contain at least one selected from an additional component comprising an agent, a release agent or a mixture thereof.
  • any components of the exothermic compositions that have been disclosed in the past, are commercially available, or are used for known disposable warmers and heating elements can be appropriately selected and used. .
  • the moldable excess water exothermic composition of the present invention has a surplus of 0.001 to 5% by mass of a molding aid and a mobile water value of 0.01 to 13.5 with respect to the mass of the iron powder.
  • Molding aids against iron powder mass Therefore, the exothermic properties of the water-containing exothermic composition and the exothermic composition molded body are not affected by the molding aid, and after molding the moldable excess water exothermic composition, It does not remove water such as dehydration, water absorption, and dewatering, and generates heat when it comes into contact with air without adding water or a water-soluble water solution.
  • “Immediately after production, it generates heat with a temperature rise of 5 ° C or more within 5 minutes after being left in air in a 20 ° C environment without wind” means that it is left for 24 hours after the production of the exothermic composition, etc.
  • the exothermic composition was allowed to stand on a non-water-absorbing material such as a polyethylene film, a polyester film or a sheet in air at 20 ° C without wind. The exothermic composition generates heat with a temperature rise of 5 ° C. or more within 5 minutes.
  • the temperature rise within 5 minutes is preferably 5 ° C or higher, more preferably 10 ° C or higher, still more preferably 20 ° C or higher, and further preferably.
  • the temperature rise is over 10 ° C within 3 minutes.
  • the exothermic composition temperature rise measurement method uses the exothermic composition or exothermic composition molded body immediately after production, and the sample (exothermic composition or exothermic composition) under the condition of windless and ambient temperature 20 ⁇ 1 ° C. Measurement is performed in a state in which a molded product or the like) can be in contact with air.
  • the temperature of the sample (exothermic composition, exothermic composition molded body, etc.) before measurement is preferably 20 ° C to 30 ° C.
  • Using a data collector to measure the exothermic temperature measure the temperature for 10 minutes at a measurement timing of 2 seconds, and measure the temperature at 0 minute, 1 minute, 3 minutes, 5 minutes, 6 minutes, and 7 minutes Then, determine the exotherm at a temperature within 5 minutes.
  • the base material is moved at a constant speed, and the dropping port for dropping the heat generating composition is moved on the base material while moving at the same speed as the base material. Since the exothermic composition molded body obtained by molding the moldable water-containing exothermic composition is laminated, the substrate is hardly stopped and started repeatedly, which is excellent in achieving high-speed production. If the exothermic composition is water-containing, as described above, the exothermic composition, particularly iron powder and air, is produced during the period from the production of the exothermic body until the obtained exothermic body is sealed in an airtight outer bag. Oxidation reaction occurs, and the initial heat generation characteristics of the heat generating composition are improved, so that there is an advantage that a heating element with improved initial heat generation characteristics can be obtained.
  • the amount of surplus water in the exothermic composition is defined as a mobile water value.
  • the mobile water value of the moldable excess water exothermic composition of the present invention is preferably 0.01 to 13.5, more preferably 0.01 to 13, and still more preferably 0.01. -12, more preferably 1-12, more preferably 2-12, more preferably 3-12, even more preferably 4-12, and even more preferably 5-12. 12, more preferably 5: L 1.
  • the solid exothermic composition raw material of the moldable excess water exothermic composition of the present invention is a powder, and its particle size is preferably 500 ⁇ m or less, more preferably 425 ⁇ m or less, and further Preferably it is 300 m or less, more preferably 250 / zm or less, more preferably 21 2 ⁇ m or less, more preferably 150 ⁇ m or less, and even more preferably 106 ⁇ m or less. More preferably, it is 90 ⁇ m or less.
  • the particle diameter is a value obtained by displaying the amount passing through the sieve in terms of the sieve opening (diameter of the sieve) ⁇ m.
  • the moldability and shape retention of the moldable excess water exothermic composition are improved as the particle size of the water-insoluble solid component excluding the reaction accelerator, the water-soluble substance and water is smaller.
  • the blending ratio of the moldable combined surplus water exothermic composition is not particularly limited, but the carbon component is 1.0 to 50 parts by weight with respect to 100 parts by weight of the iron powder, the reaction accelerator.
  • the blending ratio is preferably selected so that it is 1.0 to 50 parts by weight and water is 1.0 to 60 parts by weight.
  • the following composition may be added to the exothermic composition with respect to the iron powder in the following blending ratio.
  • the molding aid and the release agent are each 0.001 to 5 parts by weight, water retention agent 0.01 to 10 parts by weight, water-absorbing polymer 0.01 to 20 parts by weight, pH Conditioner 0.01 to 5 parts by weight, hydrogen generation inhibitor 0.01 to 12 parts by weight, metal other than iron 1.0 to 50 parts by weight, metal oxide other than iron oxide 1.0 to 50 parts by weight, Surfactant 0.01 to 5 parts by weight, hydrophobic high molecular weight compound, aggregate, fibrous material, functional substance, organosilicon compound and pyroelectric substance, respectively 0.01 to 10 parts by weight, moisturizing agent
  • the fertilizer component and the exothermic aid are each preferably 0.01 to 10 parts by weight, and the acidic substance is preferably 0.01 to 1 part by weight.
  • a magnetic substance may be further blended, and the blending ratio may be appropriately determined as desired.
  • This blending ratio can also be applied to a reaction mixture and an exothermic mixture.
  • the mobile water value of the reaction mixture is preferably less than 0.01.
  • the blending ratio that may be further blended with the magnetic material may be appropriately determined as desired.
  • the content of the molding aid is not limited as long as the heat generation performance is not significantly lowered, but is preferably 0.001 to 5% by weight, more preferably 0 to 100 parts by weight of the iron powder.
  • 001 to 3 parts by weight more preferably 0.001 to 1 part by weight, still more preferably 0.01 to 1 part by weight, still more preferably 0.01 to 0.5 part by weight.
  • More preferred is 0.01-0.2 parts by weight, still more preferred is 0.01-0.1 parts by weight, still more preferred is 0.01-0.0 parts by weight, still more preferred. Is 0. 01-0. 095 parts by weight.
  • the reaction mixture or exothermic composition is left in the oxidizing gas environment or left to mix, etc.
  • An example is a method for producing an exothermic mixture.
  • the oxidizing gas contact treatment method of the reaction mixture has 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 reaction mixture is contacted with oxidizing gas and the temperature rise of the reaction mixture is raised to 1 ° C or higher within 10 minutes.
  • the oxidizing gas contact treatment may be present in a container or in a breathable sheet-like material 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 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 as an alloy is not particularly limited as long as the iron component acts as a component of the heat generating composition, but examples include metals such as aluminum, manganese, copper, and silicon, and semiconductors.
  • the metal of the present invention includes a semiconductor.
  • the content of the metal other than iron is usually 0.01 to 50% by weight, preferably 0.1 to 10% by weight, based on the whole iron powder.
  • An essential component of the exothermic composition or an acid substance or other necessary component added to it Activated iron powder that has been contact-treated with oxidizing gas, partially oxidized the iron component, and at least partially oxidized the surface of the iron component
  • the thickness of the iron oxide film that is an oxygen-containing film covering the surface of the iron powder is usually 3 nm or more, preferably 3 nm to 100 m, more preferably 3 nm to 100 m, using the Auger electron spectroscopy.
  • the thickness of the iron oxygen-containing film By setting the thickness of the iron oxygen-containing film to 3 nm or more, the thickness of the iron oxygen-containing film can exert an effect of promoting the oxidation reaction, and contact with an oxidizing gas such as air causes the oxidation reaction. You can get started right away. If the thickness of the iron oxygen-containing coating is 100 m or more, the heat generation time may be shortened, but it can be used depending on the application.
  • the other is active iron powder having wustite, and the amount of wustite is usually 2 to 50% by weight, preferably 5.01 to 50% by weight, as an X-ray intensity ratio with iron. More preferably, it is from 5.01 to 40% by weight, more preferably from 6 to 40% by weight, still more preferably from 7 to 30% by weight, still more preferably from 7 to 25% by weight. Even if it exceeds 50% by weight, the rise of heat generation is good, but the heat generation duration is shortened. If it is less than 2% by weight, the heat build-up property becomes pure.
  • the water may be from a suitable source. There are no restrictions on the purity and type.
  • the water content preferably contains 1 to 70% by weight of the exothermic composition.
  • 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 3 to 20% by weight. %, More preferably 4 to 15% by weight.
  • the carbon component is not limited as long as it is a carbonaceous material. Examples thereof include carbon black, graphite, activated carbon and the like.
  • the reaction accelerator is not limited as long as it can accelerate the exothermic reaction. Inorganic electrolytes such as metal halides such as sodium chloride and potassium salt, metal sulfates such as potassium sulfate, nitrates such as sodium nitrate, acetates such as sodium acetate, and carbonates such as ferrous carbonate As an example.
  • Inorganic electrolytes such as metal halides such as sodium chloride and potassium salt, metal sulfates such as potassium sulfate, nitrates such as sodium nitrate, acetates such as sodium acetate, and carbonates such as ferrous carbonate As an example.
  • Well-known messenger It can be used for throwing away warmers and heating elements!
  • reaction accelerators are usually used as aqueous solutions, but can also be used in powder form. When used as an aqueous solution of a reaction accelerator, it is treated as a liquid exothermic composition raw material, and there is no restriction on the particle size of the solid raw material for entrusting the preparation of the liquid exothermic composition raw material.
  • the water retention agent is not limited as long as it can retain water. Examples include wood powder, pulp powder, activated carbon, vermiculite, terra balloon, and fossil.
  • the molding aid is a moldability improving agent that improves the moldability of the surplus water heating composition in combination with moisture.
  • the molding aid is a moldability improving agent that improves the moldability of the excess water exothermic composition in combination with moisture.
  • the molding aid is not limited as long as it is water-soluble or hydrophilic and improves the moldability of the excess water heating composition, but glucose, fructose, sorbitol, maltose, lactose are not limited. , Sugars such as sucrose, trenorose, pectin, sugar alcohols such as mannitol, sonolebithonole, maltitol, erythritol, xylitol, corn starch, wheat starch, rice starch, corn starch, potato starch, dextrin Starch, partially alpha-ized starch, hydroxypropyl starch, carboxymethyl starch, at-cyclodextrin, 13-cyclodextrin, starch of pullulan sugar, crystalline cellulose, carboxymethylcellulose, hydroxypropylcellulose, low substitution Degrees of cellulose such as hydroxypropylcellulose, hydroxypropylmethylcellulose, methinoresenolellose, canoleboxymethylenoresen
  • Polybulurpyrrolidone Polyvinyl alcohol, stearate, sodium polyacrylate, agar, gum arabic, sodium alginate, gelatin, corn syrup, mannitol syrup, carrageenan, tran Togam, Kara gum, Xanthan gum, Dulan gum, Punorerin, Guardlan, Gelatin, Albumin, Casein, Soy protein, Wheat protein, Alappinogalactan, Gua gum, Low power Stobing gum, Tamarind seed gum, Tarra gum, Tragacanth gum, Poly-N-vininorea setamide, Acrylic Acid starch copolymer, microcrystalline cellulose, N-bulacetamide copolymer, bentonite, kaolin, sodium silicate, calcium chloride salt, montmorillonite, aluminum silicate or water-dispersed emulsion such as poly (acetate) Or the use of a combination is mentioned as an example.
  • the water-absorbing polymer is not particularly limited as long as it has a crosslinked structure and has a water absorption ratio of 3 times or more with respect to its own weight.
  • the surface may be bridged.
  • Conventionally known water-absorbing polymers and commercially available products can also be used.
  • water-absorbing polymers examples include poly (meth) acrylic acid crosslinked products, poly (meth) acrylate crosslinked products, poly (meth) acrylate crosslinked products having polyoxyalkylene groups, poly (meth) acrylamide crosslinked products, ( Cross-linked copolymer of (meth) acrylate and (meth) acrylamide, cross-linked copolymer of (meth) hydroxyalkyl acrylate and (meth) acrylate, starch-poly (meth) acrylonitrile graft copolymer Examples thereof include starches, starch-poly (meth) acrylic acid (salt) graft cross-linked copolymers, polyisobutylene maleic acid (salt) cross-linked polymers, and the like. These may be used alone or in combination of two or more.
  • the pH adjusting agent is not limited as long as the pH can be adjusted.
  • Alkali metal or Al force There are weak earth salts and hydroxides of alkaline earth metals, Na CO, NaHCO, Na PO, Na HPO
  • Na P O, Ca (OH) and the like are examples.
  • the hydrogen generation inhibitor is not limited as long as it suppresses the generation of hydrogen.
  • the io compound is a compound with an alkali metal or an alkaline earth metal, such as a metal sulfate such as sulfite, metal sulfite such as sodium sulfite, or metal thiosulfate such as sodium thiosulfate.
  • a metal sulfate such as sulfite
  • metal sulfite such as sodium sulfite
  • metal thiosulfate such as sodium thiosulfate.
  • 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 Like Bincho charcoal
  • silica-alumina powder silica-magnesia powder
  • kaolin crystalline cellulose
  • colloidal silica pumice
  • silica gel silica powder
  • silica powder my strength powder
  • clay, talc synthetic resin powder and pellets
  • foamed polyester and polyurethane examples include foamed synthetic resin, algae, alumina, and fiber powder.
  • fibrous material examples include, for example, vegetable fibers (cotton, cabbage, wood pulp, non-wood pulp, peanut protein fiber, corn protein fiber, soybean meal fiber, Mannan fiber, rubber fiber, hemp, Manila hemp, sisal hemp, New Zealand hemp, Rafu hemp, eggplant, igusa, straw, etc.), animal fiber (wool, goat hair, mohair, cashmere, alkanoku, Angola, camel, Vicuuna, silk, feathers, down, feather, algin fiber, chitin fiber, casein fiber, etc.) and mineral fibers (asbestos, etc.).
  • synthetic fibers include semi-synthetic fibers (acetate, triacetate, oxidized).
  • single fibers such as polyolefins such as high density polyethylene, medium density polyethylene, low density polyethylene, polypropylene, polyester, polyvinylidene chloride, starch, polybutyl alcohol or polyacetate butyl, or copolymers or modified products thereof.
  • polyolefins such as high density polyethylene, medium density polyethylene, low density polyethylene, polypropylene, polyester, polyvinylidene chloride, starch, polybutyl alcohol or polyacetate butyl, or copolymers or modified products thereof.
  • polyolefins and modified polyesters are preferred because they have a melting point lower than the ignition point of pulp fibers, making it easy to create a three-dimensional network structure by fusing fibers with high bonding strength between the fibers.
  • a branched synthetic fiber such as polyolefin is preferably used because of its good fixability to oxidizable metals and water retention agents. These fibers can be used alone or in combination of two or more. These fibers can also be collected and reused.
  • wood pulp and cotton are used in terms of the oxidizable metal, the fixability of the water retention agent, the flexibility of the resulting molded sheet, the oxygen permeability resulting from the presence of voids, the production cost, and the like. Preferably used.
  • the fibrous material preferably has an average fiber length of 0.1 to 50 mm.
  • the release agent is not limited, but is a lubricating oil composed of mineral oil, synthetic oil, animal or vegetable oil, high viscosity lubricating oil such as grease, natural wax, synthetic wax, silicone oil, Examples thereof include silicon rosin, stearic acid, stearates, and the like.
  • the functional substance may be any functional substance as long as it has some function such as medicinal effect and aroma.
  • acidic mucopolysaccharides such as alkaloid compounds; , Anthocyanin, vitamin P, kinka, silanol, terminaria, mayus, etc .; aminophylline, tea echex, caffeine, xanthene derivatives, inosit, dextran sulfate derivatives, cinchio chinoki, escin, anthocyanin, organic Slimming agents such as iodine compounds, hyperic leather, cedar, mannen wax, ginseng, hyalurochi-dase; analgesics such as indomethacin, dl-camphor, ketoprofen, shoga extract, pepper extract, methyl salicylate, glycol salicylate ; Lavender, rosemary, citron, Jefferies - Par, peppermin
  • the percutaneously absorbable drug is not particularly limited as long as it is percutaneously absorbable.
  • skin stimulants such as salicylic acid and indomethacin
  • antiseptic analgesics such as salicylic acid and indomethacin
  • central nervous system agents such as central nervous system agents.
  • antiseptic analgesics such as salicylic acid and indomethacin
  • central nervous system agents such as central nervous system agents.
  • diuretics such as a wide range of the central nervous system agents
  • antihypertensives such as salicylic acid and indomethacin
  • central nervous system agents such as a percutaneous asphine, pirin, etc.
  • humectant examples include polyols such as glycerin, ceramides, collagens and the like.
  • the moisturizing function of the moisturizer is enhanced by the synergistic effect of these moisturizers and heat, and the skin can be moisturized and stretched.
  • examples of the knot split include anti-inflammatory agents such as indomethacin and methyl salicylate. These poultices also promote the use of transdermal absorption due to a synergistic effect with heat, and can effectively improve muscle pain, joint pain, low back pain and the like.
  • the method for producing a double-sided uneven heating element of the present invention is produced by laminating a heating composition molded body on a substrate, covering with a covering material, and sealing the peripheral portion of the heating composition molded body.
  • the method for producing a double-sided uneven heating element using the moldable excess water heating composition of the present invention is a heating composition molded article by a mold molding method such as a die-through molding method or a swallow molding method. Is manufactured by laminating on a base material, covering with a covering material, and sealing the peripheral edge of the exothermic composition molded body.
  • a moldable surplus water exothermic composition having an easy water value of 14 to 50 is formed by a mold forming method, the exothermic composition molded body is laminated on the nonwoven fabric, and further covered with the nonwoven fabric, and pressed with a press roll. Manufactured by drying with hot air (nitrogen or air, etc.) at ⁇ 200 ° C, cutting and stacking the sheet on the substrate, covering with the covering material, and sealing the peripheral edge of the exothermic composition molded body .
  • hot air nitrogen or air, etc.
  • the through-molding method uses a punching die, molds a moldable excess water heating composition, laminates a punching-shaped heating composition molding on a substrate, and generates a heating composition. This is a method for producing a molded article.
  • the punching die is a die having a through hole having a desired shape and thickness.
  • Examples include a drum-shaped forming device in which the through-hole is provided on the rotating surface of a hollow drum-shaped rotating body, and a strut-conveyor-shaped forming device using a strut conveyor-shaped rotating body in which a plurality of struts having the through-hole are provided. As mentioned.
  • a rotary punching die is used, and a molding machine for laminating a die-shaped exothermic composition molded body on a long base material and covering it with a long covering material.
  • a rotary sealer that can seal the section and the periphery of the base material and coating material (heat seal, pressure seal, heat seal, etc.), and around the exothermic composition molded body through the seal
  • An example is a continuous forming method in which the necessary portions of the section and the section are heat sealed and sealed.
  • the squeeze molding method is a method of forming a exothermic composition by filling a moldable excess water exothermic composition into a squeeze mold having recesses and laminating the molded exothermic composition molded body on a substrate.
  • a punching die is a die having a recess having a desired shape and thickness.
  • a heat generating assembly in which a concave portion is provided on the outer surface of a drum-shaped rotating body or a hollow drum-shaped rotating body An example of the molded article manufacturing apparatus is an example.
  • a molding machine for laminating a heat-generating composition formed body on a long base material by covering the concave portion with a drum-shaped rotating body and transferring it to the base material, and covering it with a long covering material Using a rotary sealer that can seal the target section and the periphery of the base material and coating material (heat seal, pressure seal, thermocompression seal, etc.), the exothermic composition molded body through the seal device
  • a continuous forming method in which necessary portions of the twill part and the divided part are heat sealed and sealed.
  • the exothermic composition molded body of the present invention generates heat upon contact with air (oxygen), can be stacked on the base material, can maintain its shape, is covered with a covering material, and seals the peripheral portion of the exothermic composition molded body. If you can, there is no limit! /
  • the width of the heat generating sheet is not limited, it preferably has a striped space (including slits) of 0.001 to 50 mm and has a holed heat generating sheet that generates heat in contact with air (oxygen).
  • Exothermic composition molded body which is a cut and processed product thereof
  • the width of the sheet-like heating piece is not limited, but preferably has a striped space (including slits) of 0.001 to 50 mm, with holes that generate heat in contact with air (oxygen) Sheet-like heat generating piece and heat-generating yarn and molded article as a cut product thereof
  • the size of the exothermic composition molded body of the above 3) and 4) may be determined according to the desired size of the double-sided uneven heating element.
  • the distance between the exothermic composition molded product space and the space of 3) and 4) above applies the width of the same exothermic part.
  • the size of the exothermic composition formed by molding the moldable excess water exothermic composition by molding is applied to the size of the other part.
  • the cutouts may be linear, such as a straight line, or may have a two-dimensional shape, such as a triangle.
  • the components of the exothermic composition used in conventional warmers and exothermic bodies can be used without particular limitation.
  • the heat generating sheet is not limited as long as it is in the form of a sheet that generates heat upon contact with air (oxygen).
  • Examples of the heat generating sheet include a dispersive heat generating sheet, a papermaking heat generating sheet, and a pressure processing heat generating sheet. .
  • a heat-generating sheet with holes and Z or a heat-generating piece can also be used as the heat-generating composition molded body.
  • each heating sheet and heating piece of the present invention is the process of cutting the material heating sheet, slitting, drilling, drilling Z cutting, etc., and small width (width is not limited, but preferably lmm to 30mm, More preferably width lmm to 25 mm, more preferably width lmm to 24.5 mm).
  • the manufacturing method of a raw material sheet can use a well-known manufacturing method.
  • W096 / 11654 can be cited as Japanese Patent Laid-Open No. 2003-102761 and WO00 / 13626 iso-power S-I.
  • there are no restrictions on the installation method of the space (including slits) and known methods can be used. Examples include mechanical cutting methods such as guillotine cutters and cutting rolls, and laser cutting methods.
  • the dispersive exothermic sheet is not limited as long as the exothermic composition is dispersed and held in a non-woven fabric or other packaging material having a porosity and processed into a sheet-like exothermic body.
  • Oxidizable metal powder Carbon component, powder raw material exothermic composition containing water retention agent as essential components is dispersed in the nonwoven fabric, and then an aqueous solution of reaction accelerator such as electrolyte is added, and contact with air (oxygen) generates heat. This is an exothermic sheet.
  • the paper-making exothermic sheet is not limited as long as the exothermic composition is processed into a sheet-like heating element by a paper-making method.
  • the oxidizable metal powder such as iron powder, carbon component, water retention agent,
  • a paper sheet made from a slurry-like raw material exothermic composition containing fiber and water as essential components by papermaking is dried with hot air at 90 to 200 ° C, and a reaction accelerator such as an electrolyte or an aqueous solution thereof is added to air (oxygen).
  • a sheet under a heat generating sheet that generates heat upon contact with ().
  • a pressure-processable heating sheet is a sheet-like heating element formed by a pressing process. There is no limitation as long as it is processed, but the following 1) and 2) are listed as examples.
  • components of the moldable excess water exothermic composition can be used.
  • ethanol, propylene glycol, glycerin and the like are preferable as the alcohol.
  • the cross-linking agent causes cross-linking between the water-absorbing polymers, cross-linking between the second polymers, cross-linking between the water-absorbing polymer and the second polymer, and a cross-linking reaction between these polymers.
  • at least one cross-linking agent that promotes cross-linking is preferable among the ones that intervene between these polymers to cause crosslinking. Examples include ethylene glycol diglycidyl ether and methylene bisacrylamide.
  • Oxidizable metal powder such as iron powder, carbon component, reaction accelerator and water are essential components, and 1 to 15% by weight, preferably 3 to 15% by weight, of the formation aid is based on the total amount.
  • water-absorbing polymers, water retention agents such as wood powder, hydrogen generation inhibitors such as sodium sulfite, pH regulators such as slaked lime, etc. that have been publicly disclosed. Can be appropriately selected and used.
  • a heat-generating sheet, a sheet-shaped heating piece, or a holed mold is used depending on the size of the mold hole, so A piece can be manufactured.
  • the pressure processing method is not limited as long as it is a method in which the exothermic composition is put in a mold and pressed in the mold, and the exothermic composition is compressed and molded. Place in a cylindrical mold and press to mold.
  • the pressure and pressurizing time are not limited as long as they can be molded, but the pressure is preferably 100 to 9000 kgZcm 2 , and the time is preferably 0.01 to 30 seconds.
  • the exothermic composition is rolled at a predetermined pressure using a roller to form a sheet-like heating element.
  • the exothermic composition is placed in a mold hole having a recess or a through hole having a desired shape, and a deformable flexible roll such as a balloon roll or a convex part that can be inserted into the mold hole.
  • the exothermic composition in the mold cavity is pressurized with a pressurizing means such as a roll or belt, and the exothermic composition is compressed and molded.
  • the heat treatment conditions in this case are not limited, but are preferably 50 to 250 ° C. and about 1 second to 20 minutes.
  • Exothermic composition molded body molded from moldable surplus water exothermic composition by molding and exothermic composition molded body comprising sheet-like heating piece, hole-like heating sheet, hole-like sheet-like heating piece
  • Dispersion-type heating sheets, dispersion-type sheet heating pieces, paper-making-type heating sheets, paper-making-type sheet-like heating pieces, pressure-processing-type heating sheets, and pressure-processing-type sheet-like heating pieces are sheet-like heating pieces.
  • a laminated body in which a packaging material such as a nonwoven fabric is arbitrarily combined and laminated is also included.
  • the size and shape of the sheet-like heating piece are not limited, but are preferably as follows.
  • the shape is preferably a rectangle or a rectangle-like shape.
  • the width is preferably not less than lmm and less than 25mm, more preferably lmn! ⁇ 24.9 mm, more preferably l ⁇ 24 mm, more preferably lmm ⁇ 23 mm, and even more preferably lmn! ⁇ 22mm, more preferably lmm ⁇ 2lmm, more preferably 3mn! ⁇ 20mm, more preferably 5mn! Is 15 mm, more preferably 5 mm to 10 mm.
  • the length is preferably 5 to 300 mm, more preferably 5 mm to 200 mm, still more preferably 5 mm to 100 mm, more preferably 20 mm to 150 mm, and even more preferably 30 mn! ⁇ 100mm.
  • Specific force of (length Z width) is preferably 2.0 to 60, more preferably 2.1 to 60, more preferably 2.1 to 50, still more preferably 2.1 to 40 Yes, more preferably 2.1 to 30, more preferably 2.5 to 25, still more preferably 2.5 to 20, and still more preferably 3 to 20.
  • the height is 0.5 mm or more and less than 10 mm, more preferably lmm to 10 mm, and even more preferably 2mn! ⁇ 10mm.
  • the size of the heat-generating sheet with holes may be determined according to the size of the double-sided uneven heating element.
  • the width of the space is not limited as long as flexibility can be ensured, but is preferably 0.
  • 001111111 to 50111111 preferably [0.01 mm to 50 mm, more preferably ⁇ 0.1 mm to 50 mm, more preferably 0.3 mm to 50 mm, more preferably 0.3 mm to 50mm, more preferably 0.3mn! -40 mm, more preferably 0.5 mm -30 mm, more preferably lmn! ⁇ 30mm, more preferably lmn! ⁇ 20 mm, more preferably 3 mm ⁇ : L Omm.
  • the width of the section is not limited as long as flexibility can be secured, but preferably 0.1 lmn! -50 mm, preferably 0.3 mm to 50 mm, more preferably 0.3 mm to 50 mm, and even more preferably 0.3 mn! ⁇ 40mm, more preferably 0.5mn! ⁇ 30mm, more preferably lmm ⁇ 30mm, more preferably lmm ⁇ 20mm, more preferably 3mn! ⁇ 10mm.
  • the width of the space is not limited as long as flexibility can be ensured, but is preferably 0.
  • 001111111 to 50111111 preferably [0. 01mm to 50mm, more preferably ⁇ or 0.1 mn! ⁇ 50mm, more preferably 0.3mn! -50 mm, more preferably 0.3 mm to 40 mm, and even more preferably 0.5 mn! ⁇ 30mm, more preferably lmn! ⁇ 30mm, more preferably lmn! ⁇ 20mm, more preferably 3mn! ⁇ 10mm.
  • the total area of the heat generating regions other than the space is not limited, but preferably, the total area of the divided heat generating portions is 50 to 85% with respect to the entire heat generating surface of the heating element, More preferably, it is 50 to 70%. Within this range, heat storage can be suppressed and redness, medical treatment, etc. can be more effectively prevented.
  • the width of the section In order to have a number of partial stimulating elements and to expect a comfortable thermotherapy, it is preferable to set the width of the section to 3.5 to: LOmm. It is preferable to set the ratio of the width of the partition and the width of the partition part (air layer part) to 1: 1 to 3: 1.
  • the ratio of the width of the section heating section to the section section (air layer section) is preferably 1: 1 to 3: 1.
  • the ratio of the width of the section heating section to the section section is preferably 1: 1 to 3: 1.
  • the nonwoven fabric (b) is laminated on the lower surface of the nonwoven fabric (a) having a large number of voids, the exothermic composition powder and the hot-melt adhesive powder are spread on the upper surface of the nonwoven fabric (a), and the nonwoven fabric ( After c), the sheet-like heating element is formed by heating and compressing with a heating compressor to form a sheet-like material and then impregnated with water or an aqueous inorganic electrolyte solution, and the sheet-like heating element 3 layer nonwoven fabric dispersive exothermic sheet that is cut into desired size
  • the powder of the heat generating composition is spread and held on the upper surface of the nonwoven fabric, and another nonwoven fabric having a large number of voids on the upper surface of the nonwoven fabric.
  • a two-layer nonwoven fabric-dispersed exothermic sheet that is obtained by superposing and compressing and then spraying water or an aqueous electrolyte solution or cutting it into a desired size.
  • the three-layer nonwoven fabric heating sheet of the distributed heating sheet is
  • the nonwoven fabric (b) is superimposed on the lower surface of the nonwoven fabric (a) having a large number of voids, and the nonwoven fabric (c) is superimposed on the upper surface of the nonwoven fabric (a).
  • the exothermic composition powder and the hot-melt adhesive powder are held between the non-woven fabric (a) and the non-woven fabric (c), and the non-woven fabric (a) and the non-woven fabric (c) are bonded by water compression by a heat compressor. Or a heating sheet impregnated with an aqueous inorganic electrolyte solution,
  • the heat generating composition powder and the hot-melt adhesive powder are held in the gap between the nonwoven fabric (a) and the nonwoven fabric (c) and between the laminate of the nonwoven fabric (a) and the nonwoven fabric (c).
  • the non-woven fabric holds the exothermic composition powder and the hot melt adhesive powder, and is a heating compressor.
  • An example is a heat-generating sheet in which at least one surface is bonded to another nonwoven fabric in contact with the one-layer nonwoven fabric by heat compression and impregnated with water or an aqueous inorganic electrolyte solution.
  • the hot melt adhesive powder is made from an ionomer, ethylene 'bule acetate copolymer, polyethylene, a homopolymer of thermoplastic resin such as polypropylene, or a polymer blend of these thermoplastic resins, and these thermoplastic resins. It is preferable that it is at least one selected from the group consisting of hot melt as a base polymer.
  • the softening point of the hot melt adhesive powder is preferably 40 to 200 ° C.
  • the amount of the hot-melt adhesive powder added is preferably 0.1 to 20.0 parts by weight with respect to 100 parts by weight of the iron powder.
  • the particle size of the hot melt adhesive powder is not limited, but a diameter of 0.2 to 2 mm is preferred.
  • the heating compressor has an emboss on at least one of the compression surfaces.
  • Non-woven fabric (a), non-woven fabric (b), and non-woven fabric (c) It is preferable that the main component is at least one selected from the group consisting of 1S, cotton, hemp, rayon and acetate.
  • the non-woven fabric is a non-woven fabric having a large number of voids, and among the exothermic composition raw materials that generate heat upon contact with air, a mixture of those used in powder form (hereinafter referred to as exothermic composition powder) is used.
  • exothermic composition powder a mixture of those used in powder form
  • known non-woven fabrics can be used because they can be held in voids and have high water retention and flexibility. It is preferable to have a concave and convex surface constituted by the embossed surface of the compression roll on the compression surface of the nonwoven fabric.
  • the exothermic composition powder may contain iron powder and a carbon component as essential components, and may contain at least one of the components of the moldable excess water exothermic composition.
  • the two-layer nonwoven fabric-dispersed exothermic sheet has a plurality of voids, the first nonwoven fabric with water attached to the lower surface, and the heat generated by being dispersed from the upper surface of the nonwoven fabric and held in the voids inside the nonwoven fabric. And a sheet-like product formed by compressing the nonwoven fabric with a mold compressor. It is a heat generating sheet in which a product is impregnated with water or an aqueous inorganic electrolyte solution.
  • the first non-woven fabric is composed mainly of fibers selected from pulp, cotton, hemp, rayon force, and the heat-generating composition is retained in the voids of at least one non-woven fabric. It is preferable that the porosity is 60 to 99.5%, the thickness is 0.5 to 25 mm, and the basis weight is 5 to 200 gZm 2 .
  • the exothermic composition powder is sprayed on the upper surface and held in the voids, and then the second nonwoven fabric on the upper surface of the first nonwoven fabric.
  • An example is a heat-generating sheet in which a nonwoven fabric is laminated and compressed with a mold compressor and impregnated with water or an aqueous inorganic electrolyte solution.
  • the amount of water to be deposited is 10-200gZm 2 ! /.
  • a method for producing the two-layer nonwoven fabric dispersed heat generating sheet a known production method can be used. It is preferable to have a concavo-convex surface constituted by the embossed surface of the compression roll on the compression surface of the nonwoven fabric.
  • the components of the exothermic composition can be used in a dispersion type exothermic sheet, a papermaking type exothermic sheet, and a pressure compression type exothermic sheet.
  • the hot-melt adhesive powder is the same as the three-layer nonwoven fabric-dispersed heat generating sheet.
  • the papermaking exothermic sheet is made by making an intermediate molded body from a raw material composition containing at least iron powder, carbon component, fibrous material and water in a papermaking process, and then heating and drying the intermediate molded body at 60 to 300 ° C.
  • a heating sheet in which an electrolyte is added to and contained (impregnated) in the intermediate molded body by spray coating or spraying is preferred.
  • the heat generating sheet is a heat generating composition molded body that generates heat upon contact with air (oxygen).
  • the raw material composition is at least an iron powder, a carbon component, a reaction accelerator (inorganic electrolyte), a thermoplastic fiber, and water, and the raw material composition is paper-made, and the obtained intermediate molded body is 90 to 300 °. After drying by heating at C, the intermediate molded body is subjected to a reaction accelerator (by spray coating or spraying). An inorganic electrolyte) is added and contained (impregnated), and a molded body having a heat generation having a network structure in which the thermoplastic fibers are fused to each other.
  • the papermaking heat generating sheet preferably contains 50% by weight or more of components other than the fibrous material, such as iron powder, carbon component, and fibrous material.
  • the raw material composition may contain at least one component of the moldable excess water exothermic composition.
  • the amount of the oxidizable metal such as iron powder in the component obtained by removing the electrolyte from the papermaking heat generating sheet is preferably 10 to 95% by weight.
  • a flocculant may be added to the papermaking heat generating sheet.
  • Additives can be added without particular limitation.
  • the addition amount of the additive can be appropriately set according to the additive to be added.
  • the density of the papermaking heat generating sheet is preferably 0.6 to 3. OgZcm 3 .
  • the papermaking exothermic sheet preferably has a moisture content (weight moisture content, the same shall apply hereinafter) of 10 to 80%.
  • the aggregating agent is preferably added to the raw material composition for the papermaking heat generating sheet.
  • the flocculant examples include inorganic coagulants such as sulfate bands, polysalts and aluminum; clay minerals such as bentonite; diacids such as colloidal silica or hydrates thereof; Examples thereof include magnesium silicate and the molding aid. Besides these combinations, these flocculants can be used alone or in combination of two or more.
  • the amount of the flocculant added is preferably 0.01 to 5% by weight based on the solid content of the raw material composition.
  • the concentration of the raw material composition is preferably 0.05 to 10% by weight, more preferably 0.1 to 2% by weight.
  • a papermaking method for making a papermaking sheet by papermaking the raw material composition a known papermaking method such as a short net papermaking machine can be used.
  • the papermaking sheet maintains its shape after papermaking (shape retention) and maintains its mechanical strength. In view of this, it is preferable to dehydrate until the moisture content (weight moisture content, the same shall apply hereinafter) is 70% or less, and more preferably 60% or less.
  • the papermaking sheet is preferably dried by heat drying.
  • the heat drying temperature is preferably 60 to 300 ° C, more preferably 80 to 250 ° C.
  • the moisture content of the papermaking sheet after drying is preferably 20% or less, more preferably 10% or less.
  • excellent long-term storage stability for example, even when temporarily stored in a wound roll state, etc., heat generation performance in which moisture does not easily move in the thickness direction of the roll, Excellent in that it can supply a uniform product in mechanical strength!
  • the water content can be adjusted and stabilized as necessary to obtain a papermaking exothermic sheet. Then, if necessary, the paper-making heat generating sheet or paper-making sheet can be trimmed, laminated at least two sheets, etc., and caloeed to a predetermined size.
  • the pressure-processable exothermic sheet is a mixture of an exothermic composition containing iron powder, a carbon component, a reaction accelerator, and water as essential components with a water-absorbing polymer and a second polymer other than Z or a water-absorbing polymer.
  • An exothermic sheet in which either a crosslinking agent or a plasticizer is added and a predetermined pressure is applied to the exothermic sheet is preferred.
  • components of the moldable excess water exothermic composition can be used.
  • ethanol, propylene glycol, glycerin and the like are preferable as the alcohol.
  • the cross-linking agent causes cross-linking between the water-absorbing polymers, cross-linking between the second polymers, cross-linking between the water-absorbing polymer and the second polymer, and a cross-linking reaction between these polymers.
  • at least one cross-linking agent that promotes cross-linking is preferable among the ones that intervene between these polymers to cause crosslinking. Examples include ethylene glycol diglycidyl ether and methylene bisacrylamide.
  • a heat-generating composition formed from the heat-generating sheet with holes of the present invention or a cut product thereof! I will explain.
  • the ratio of the length, width, height, and (length Z width) of the segmented heat generating portion, which is the space between the space portions, is not limited.
  • width is preferably lmm or more and less than 25mm
  • height is preferably 0.5mn!
  • the ratio of (length Z width) is preferably 2.1 to 60, and the width of the space portion is not limited, but preferably is 1 to 30 mm, and the plurality of divided heating portions are They are separated from each other, and are formed in stripes in at least one direction by a stripe-shaped space, and are easy to bend in one direction. .
  • a heat generating sheet with holes in which the striped space of the heat generating sheet with holes has a cutout at least at one end of the heat generating sheet with holes on the extension line of the stripe.
  • the exothermic composition molded body is laminated on a substrate, covered with a coating material, and the peripheral edge and Z or space of the exothermic composition molded body are heat-sealed to form a double-sided uneven heating element.
  • the exothermic composition molded body according to the present invention will be described with respect to a sheet-like heat generating piece with holes (heat generating sheet with holes), a heat generating piece, and a heat-generating composition formed body having a cutting performance.
  • the heating piece is a small heating sheet with a width of lmm to 30mm.
  • the sheet-like heating piece with holes is a sheet-like heating piece in which a striped space is provided in a sheet-like heating piece such as the dispersion-type sheet-like heating piece, the paper-making sheet-like heating piece, and the pressure-working-type heating sheet piece. It is a heat-generating composition molded body which is a heat-generating piece or a cut processed product thereof.
  • the ratio of the length, width, height, and (length Z width) of the divided heat generating portion, which is the region between the space portions, is not limited, but the length is preferably 5 mm to 200 mm, and the width is preferable. Is more than lmm and less than 25mm, and the height is preferably 0.5mn!
  • the ratio of (length Z width) is preferably 2.1 to 60, and the width of the space is not limited, but preferably is 1 to 30 mm. They are separated from each other, and are formed in stripes in at least one direction due to the stripe-shaped space, and are easy to bend in one direction, have a direction of ease of bending, and are easy to bend only in one direction compared to other directions.
  • Have The exothermic composition molded body is laminated on a substrate, covered with a coating material, and the peripheral edge and Z or space of the exothermic composition molded body are heat-sealed to form a double-sided uneven heating element.
  • the method for producing a double-sided uneven heating element of the present invention comprises laminating a heating composition molded body on a substrate, covering with a covering material, and sealing the peripheral edge of the heating composition molded body. This is a method for producing a heating element.
  • a sheet-like heating piece such as the dispersion-type sheet-like heating piece and the paper-making type sheet-like heating piece is used as a heating assembly molded body, and the heating composition molding is laminated on a substrate, and a covering material is covered.
  • the heat-generating composition formed body is laminated on a substrate, covered with a covering material, and the peripheral portion of the heat-generating composition formed body is covered.
  • a sheet-like heating piece with a hole having a stripe-shaped space is used as a heating assembly molded body, the heating composition molding is laminated on a base material, and a covering material is placed over the periphery of the heating composition molding.
  • the heating yarn and the molded article are laminated and fixed on a base material through a fixing layer made of an adhesive or an adhesive. May be.
  • the mobile water value is a value indicating the amount of excess water that can move out of the exothermic composition among the water present in the exothermic composition. This easy water value will be explained.
  • a non-water-absorbing 70 / zm polyethylene film is placed so as to cover the hole, and further, a thickness of 5 mm X a length of 150 mm X Place a stainless steel plate with a width of 150 mm and hold for 5 minutes. Then, the filter paper is taken out, and the soaking locus of the water or aqueous solution is read in mm units as the distance from the circumferential portion that is the edge of the hole of the hollow cylinder to the soaking tip along the radial line. Similarly, the distance is read from each line to obtain a total of 8 values.
  • Each of the 8 values (a, b, c, d, e, f, g, h) read is taken as the measured moisture value.
  • the arithmetic mean of the 8 measured moisture values is 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 or the like corresponding to the weight of the exothermic composition or the like having an inner diameter of 20 mm and a height of 8 mm, and only water corresponding to the moisture content is used. Measure in the same way with, and calculate the same as the true moisture value (mm).
  • the value obtained by dividing the moisture value by the true moisture value and multiplying by 100 is the easy water value. That is,
  • the amount of water to measure the true moisture value is the ability to measure the moisture content of the exothermic composition with an infrared moisture meter. Based on this, the amount of water necessary for measurement is calculated, and the true water value is measured and calculated from the amount of water.
  • the exothermic composition having an easy water value of 0.01 to 13.5 a non-water-absorbing 70 m polyethylene film is placed so as to cover the hole, and further, 5 mm thick and 150 mm long.
  • the exothermic composition of the present invention undergoes an exothermic reaction during measurement, making measurement impossible.
  • the degree of molding refers to the shape of the exothermic composition molded body, which is a molded body of the exothermic composition in the shape of the punched hole by mold-through molding using a punching die having a punched hole, after being separated from the mold. Maintain the maximum length of 300 ⁇ at the peripheral edge of the exothermic composition molded body that the maximum length exceeds 800 m!
  • the moldability of the exothermic composition is numerically expressed by the number of pieces of the exothermic composition molded body of up to 800 m. 1) As a measuring device,
  • a stainless steel mold (with a central part of 60 mm long x 40 mm wide, four corners are rounded to 5 are r (substantially arc-shaped), and the upper part of the punched hole
  • the corners on the four sides of the mouth are 1 radius r (substantially arc-shaped), and the corners on the four sides of the lower part of the punch hole (exit of the exothermic composition molded body) are 3 r (roughly arc-shaped).
  • the magnet (thickness 12.5mm x length 24mm x width 24mm, two magnets in parallel) is placed under the endless belt.
  • the smooth surface is not limited as long as it is smooth, but the surface roughness Ra is preferably 10 m or less, more preferably 4 ⁇ m or less, and even more preferably 2 ⁇ m or less.
  • the magnet covers an area that is larger than the area (40 mm) of the maximum cross section with respect to the direction of travel of the punching hole of the mold, and the area in the vicinity thereof.
  • 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. After the mold has completely passed the frayed plate, the endless belt stops running.
  • a stainless steel molding die Z exothermic composition molded body Z polyethylene film Z stainless steel plate is set in the molding degree measuring device.
  • Set the mold holding means on the lower side of the stainless steel mold lower the jack by 100 mm at a speed of 600 mmZmim, and remove the exothermic molded product Z polyethylene film Z stainless steel plate from the stainless steel mold.
  • Gently remove the stainless steel mold from the mold holding means observe the exothermic composition molded body Z polyethylene film Z stainless steel plate and polyethylene film 24, and measure the degree of molding. . 3)
  • As a judgment method As a judgment method,
  • the degree of forming is 1 and the maximum length is 300 / ⁇ ⁇ ⁇
  • a moldability of 2 means that there are 8 pieces of the exothermic composition molded body having a maximum length of 300 m to 800 m.
  • a forming degree of 3 means that there are seven pieces of the exothermic composition molded body having a maximum length of 300 m to 800 m.
  • a forming degree of 4 means that there are 6 pieces of the exothermic composition molded body having a maximum length of 300 m to 800 m.
  • a forming degree of 5 means that there are 5 pieces of the exothermic composition molded body having a maximum length of 300 m to 800 m.
  • a forming degree of 6 means that there are four pieces of the exothermic composition molded body having a maximum length of 300 ⁇ m to 800 ⁇ m.
  • a forming degree of 7 means that there are three pieces of the exothermic composition molded body having a maximum length of 300 ⁇ m to 800 ⁇ m.
  • a forming degree of 8 means that there are two pieces of the exothermic composition molded body having a maximum length of 300 ⁇ m to 800 ⁇ m.
  • a forming degree of 9 means that there is one piece of exothermic composition molded body with a maximum length of 300 m to 800 m.
  • a forming degree of 10 means that there are 0 pieces of collapsed pieces of the exothermic composition molded body having a maximum length of 300 111 to 800 111.
  • the molding degree is preferably 7 or more, more preferably 8 or more, still more preferably 9 or more, and still more preferably 10.
  • a forming degree of 5 or more is set to a level or more. If the degree of molding is 5 or more, a seal that can withstand practical use is provided at the periphery of the exothermic composition molded body sandwiched between the base material and the covering material after molding.
  • a exothermic composition molded body can be prepared by a mold forming method such as mold-through molding or squeeze molding.
  • the exothermic composition molded body is covered with at least the coating material, and the shape is maintained until the seal part is formed between the base material and the coating material. Sealing is possible at the peripheral part, and since the loose sesame is not scattered in the sealing part, which is a broken piece of the exothermic composition, it can be sealed without being broken. The presence of sesame will cause a seal failure.
  • the exothermic composition is assumed to have moldability when the degree of molding is 7 or more.
  • the perforation at the section of the heating element is one that has been cut intermittently to improve the bendability of the section, or one that has been cut intermittently enough to allow hand cutting Is included. This perforation may be provided in all the division parts, or may be provided partially.
  • the bending resistance in the present invention refers to rigidity (cone, stiffness) or flexibility, and is the same as that in accordance with JIS L 1096A method (45 ° cantilever method) except that the heating element itself is used as a sample. It is according to. That is, one side of the heating element is placed on the scale base line on a smooth horizontal surface with a 45 ° (degree) slope at one end. Next, the heating element is slid gently in the direction of the slope by an appropriate method, and when the center point of one end of the heating element contacts the slope, the position of the other end is read on the scale. The bending resistance is indicated by the length (mm) that the heating element has moved. Each of the five heating elements is measured and the average value is obtained.
  • the heating element containing the heating composition of the heating element must have a moving distance of 5 mm or more and a distance of 20 mm or more in the direction perpendicular to the moving direction.
  • the length of the heating element placed on the horizontal platform is such that the exothermic composition exists! / The area where the heat generating composition exists! / The area where the heat generating composition exists! / It exists and crosses the area linearly.
  • the separator covering the pressure-sensitive adhesive layer of the heating element with a pressure-sensitive adhesive layer is a plastic film having a bending resistance of 30 mm or less, or a plastic film having a thickness of 50 ⁇ m or less, preferably 25 ⁇ m or less.
  • a soft, soft film such as a plastic film that can be lightly manipulated and wrinkled.
  • For one heating element place one side on a horizontal base and give the bending resistance in each direction with the average value in the vertical and horizontal directions, or one direction and the direction perpendicular to it. Place one side on a horizontal base and measure it in the same way to get each bending resistance.
  • the smallest bending resistance of each value is defined as the minimum bending resistance.
  • the change in the minimum bending resistance of the heating element or heating portion in the present invention means that the minimum bending resistance, which is the smallest value of the bending resistance of the heating element or heating portion, is the value before the heating element is heated. This is a change in value that occurs after the end of heat generation.
  • the change in the minimum bending resistance is calculated by the following equation.
  • the obtained heating element is left in air in a 20 ° C environment with no wind to generate heat.When the temperature of the heating element falls below 25 ° C, the end of use is regarded as the end of use. Measure the stiffness against the body in the direction that indicated the minimum stiffness of the heating element before heat generation, and use it as the minimum stiffness of the heating element after the end of heat generation.
  • the minimum bending resistance of the heating element or heating section in the present invention is the minimum bending resistance of the heating element or heating section and the bending resistance ratio with respect to the total length in the direction, and is calculated by the following equation. .
  • the minimum orthogonal stiffness of the heating element or the heating part means the bending flexibility in the direction perpendicular to the direction indicating the minimum bending resistance of the heating element or the heating part and the bending resistance with respect to the total length in that direction.
  • the ratio is calculated by the following equation.
  • a heating element or a heating element in a direction perpendicular to the direction showing the minimum bending resistance of the heating element or the heating part Is the total length of the heating part
  • the minimum orthogonal stiffness is set to 100.
  • the minimum bending resistance ratio in the present invention is the minimum bending resistance ratio in the plane perpendicular to the thickness direction of the heating element or heating section, and the minimum bending rigidity ratio in the direction orthogonal to the minimum bending resistance ratio. It is the ratio of the minimum bending resistance to the orthogonal bending resistance, and is calculated from the following equation.
  • a parallelepiped in which the absolute value of the difference in bending resistance in the two directions that are perpendicular to each other is maximized.
  • a heating element in which segmented heat generating portions are provided at intervals in stripes, a heating element in which an adhesive layer is further provided, and a heating element in which the adhesive layers are provided at intervals in a stripe form are Since it is very flexible and rigid in one direction, it is effective for alleviating symptoms such as stiff shoulders, back pain, muscle fatigue, and especially symptoms of menstrual pain. Furthermore, it can be burned in the width direction of the heating element with almost the size of the width, making it compact and convenient for storage. In the case of a separator, it can be made by using a separator with low bending resistance.
  • the body has many secondary curved surfaces, and the shoulders, legs, abdomen, waist, arms, etc. are almost linear in one direction, and the other two directions are Almost curved force is also created. Therefore, the heating element of the present invention that can form a curved surface in one direction is almost linear and the other two directions can form a curved surface. Ideal for symptom relief and treatment.
  • the heating element may be stored in an outer bag, which is a non-breathable storage bag, and stored and transported.
  • the outer bag may be laminated so long as it is non-breathable.
  • the non-breathable packaging material can be used as the packaging material of the outer bag.
  • the manufactured heating element is interposed between two non-breathable films or sheets, and at the same time as or after this intervention, the two films or sheets are more than the heating elements.
  • An example is a heating element in which the two films or sheets are sealed in a peripheral portion exceeding the size of the heating element at the same time after punching or after punching.
  • the heating element of the present invention can be used in the period until it is used: 1) a heating element package sealed in an outer bag which is a non-breathable storage bag, or 2) two or more folded and non-breathable storage A folded heating element package enclosed in an outer bag that is a bag, or 3) a folded heating element package that is folded into two or more with the ventilation surface inside and enclosed in an outer bag that is a non-breathable bag May be stored, transported.
  • the heating element when the heating element is enclosed in a non-breathable bag (outer bag), at least one part of the exposed part of the heating element is at least one part of the outer bag and a temporary adhesive layer such as a weak adhesive (outer temporary bonding layer). ) May be temporarily attached (outside temporary attachment).
  • a temporary adhesive layer such as a weak adhesive (outer temporary bonding layer).
  • At least one part of the exposed part of the heating element is at least one part of the outer bag and a temporary adhesive layer such as a weak adhesive. (Outer temporary wear layer) is temporarily worn (outer temporary wear)!
  • the folded heating element package which is the folded heating element of the present invention, may be folded either with the breathable surface of the heating element inside, although the breathable surface of the heating element may be inside or outside.
  • a folded heating element is preferred.
  • the heating element is folded into two or more with the air-permeable side inside, and sealed in an airtight outer bag to save airtight packaging and prevent deterioration of the heating element during storage
  • it can be stored stably for a long time, and the large-sized heating element is compact and portable. It can be conveniently stored in a stable and airtight outer bag and can be used easily, making the manufacturing cost cheaper and advantageous in terms of transportation.
  • the heating element can be prevented from being deteriorated during storage with a small amount of water evaporated in the heating composition.
  • Forming in the present invention means that at least a part of the folded portion comes into contact with the region of the non-folded portion.
  • the edge of the seal part of the outer bag which is a non-breathable storage bag, and the Z or the inside of the seal part (ie, the outer periphery at least on the side opposite to the side where the heating element is enclosed) It is desirable to form one or more notches (I notch, U notch, V notch, etc.) in the area that does not come into contact with the product so that the user can easily tear the outer bag and open it.
  • the notch forming means for forming the notch may be disposed on the downstream side of the sealing process by the sealing device, for example.
  • the outer bag which is a non-breathable storage bag, is formed of a non-breathable sheet.
  • the exothermic composition is formed until the heating element is used.
  • the supply of oxygen to the feature is cut off! /
  • the outer bag you can use a so-called easy peel film that, when sealed, will be in a soft-adhesive state that can be easily peeled off.
  • a known material such as a non-breathable synthetic resin film coated with an easy peel styrene resin or the like can be appropriately used.
  • the outer bag is formed in a slightly larger shape (substantially rectangular shape here) depending on the folded shape of the heating element.
  • the folded heating element package of the present invention is a heating element stored in a non-breathable bag in a folded or rolled state, and is at least one of the exposed portions of the heating element body (heating element).
  • the portion may be temporarily attached to the inner surface of the outer bag, which is a non-breathable storage bag (hereinafter referred to as outer temporary attachment). May be temporarily attached to at least a part of the inner surface of the outer bag, which is a non-breathable storage bag (hereinafter referred to as outer temporary attachment).
  • Outer temporary attachment means that the heating element and the non-breathable storage bag are at least partially in contact with each other via the easily peelable weak adhesive layer. Thereby, the movement of the outer bag of the heating element on the packaging material can be prevented at least until the heating element is folded. There are no restrictions on the number, area, etc. of external garments. In the case of a heating element having a separator, the separator is also handled as a heating element.
  • the outer temporary attachment layer is not limited to the installation area and shape. Even if it is provided on the entire surface or only in the area necessary for fixing, the partial temporary or intermittent It may be provided. Examples include a net shape (spider web shape), a stripe shape, a dot shape, a fiber shape, a strip shape, a rod shape, and various shapes.
  • the pressure-sensitive adhesive layer of the heating element of the present invention is preferably covered with a peelable member until use so as not to directly contact the inner surface of the outer bag.
  • the peelable member should be a thin material having an exfoliating property that allows at least one attachment / detachment to / from the pressure-sensitive adhesive layer.
  • a substrate that has been treated with a release agent is preferred. .
  • films, sheets, paper, non-woven fabrics, composite materials thereof, and the like such as polypropylene, polyethylene, polybutyl alcohol, and pET (polyester) are used.
  • silicone-based, fluorine-based, isocyanate-based and the like are preferable. These release agents can be applied to the substrate by a known method.
  • the outer bag may be laminated so long as it is non-breathable.
  • the packaging material of the airtight outer bag that houses the heating element should be substantially impermeable to air (oxygen)!
  • the non-breathable material or a conventionally known packaging material can be used.
  • the hermetic outer bag is formed by sealing around the packaging material so as not to substantially transmit air (oxygen).
  • air oxygen
  • Known sealing methods can be used. Usually, heat sealing is performed.
  • the manufactured heating element is interposed between two non-breathable films or sheets, and the two films or sheets are placed in front of, simultaneously with or after the interposition.
  • An example is a heating element package in which the two films or sheets are sealed at the periphery exceeding the size of the heating element at the same time as or after the punching. It is done.
  • the adhesive constituting the re-peelable weak adhesive layer used for external temporary attachment ends the folding operation with weak adhesive strength. There is no limit as long as the heating element can be retained in the packaging material.
  • An example of a removable adhesive that can be used is a weak adhesive.
  • hot-melt adhesives there are hot-melt adhesives, emulsion adhesives, solvent-based adhesives, etc.
  • acrylics that have a high glass transition temperature are preferred, and the ratio of acrylic acid components is increased.
  • rubbers those containing a high melting point tack fire are preferred.
  • a hot melt adhesive particularly a hot melt adhesive (polypropylene adhesive, polyethylene adhesive, ethylene-propylene copolymer adhesive, etc.) is preferable.
  • an elastomer such as a thermoplastic elastomer
  • a thermoplastic resin is used as a base polymer.
  • the base polymer may be used alone or in combination.
  • the thermoplastic elastomer of the base polymer in the hot-melt adhesive include styrene / isoprene / styrene block copolymer (SIS), styrene / butadiene / styrene.
  • Block copolymer SBS
  • Styrene-ethylene-ethylene-styrene-styrene block copolymer SEBS
  • Styrene-ethylene-propylene-styrene block copolymer SEPS
  • Styrene-ethylene-ethylene-propylene block copolymer Styrenic thermoplastic elastomers such as SEP) (styrene block copolymers; for example, styrene block copolymers containing 5% by weight or more of styrene); polyurethane thermoplastic elastomers; polyester thermoplastic elastomers; polypropylene and EPT ( Ternary ethylene-propylene rubber) And blended thermoplastic elastomers such as polymer blends with The
  • polyolefin resin examples include ethylene copolymers (for example, ethylene vinyl acetate copolymer (EVA); ethylene acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), etc.) Of ethylene unsaturated ruponic acid copolymers; ionomers; ethylene (meth) acrylic acid ester copolymers such as ethylene acrylate hexyl acrylate copolymer, ethylene methyl methacrylate acrylate copolymer, ethylene methacrylate methacrylate copolymer In addition to polymers (ethylene butyl alcohol copolymer, etc.), polyethylene (low density polyethylene, linear low density polyethylene, meta-catalyzed polyethylene, medium density polyethylene, high density polyethylene, etc.), polypropylene, a- olefin co Polymer (ethylene-propylene copolymer, ethylene-butene monocopolymer, Pirenbuten copolymers) such
  • acetic acid-based resin examples include poly (vinyl acetate), acetic acid ((meth) acrylic acid) ester copolymer, vinyl acetate vinyl ester copolymer, vinyl acetate maleic acid ester copolymer, and the like. It is done.
  • thermoplastic elastomer particularly, a polyolefin-based thermoplastic elastomer or a styrene-based thermoplastic elastomer
  • the adhesives such as emulsion adhesives and solvent-based adhesives are acrylic adhesives, rubber adhesives, polyester adhesives, urethane adhesives, polyamide adhesives, epoxy adhesives.
  • Adhesives such as bulle alkyl ether adhesives, silicone adhesives, fluorine adhesives, etc., and adhesives of each form (for example, emulsion form, solution form, etc.).
  • the pressure-sensitive adhesive is a cross-linking agent (for example, a polyisocyanate-based cross-linking agent, an alkyl ether base, or the like depending on the type of the pressure-sensitive adhesive).
  • a cross-linking agent for example, a polyisocyanate-based cross-linking agent, an alkyl ether base, or the like depending on the type of the pressure-sensitive adhesive.
  • tackifier for example, rosin derivative resin, polyterpene
  • the adhesive strength is not particularly limited as long as the heating element and the packaging material can be attached until the folding operation is completed, but preferably 180 degree peel strength.
  • JIS Z — 0237 is from 0.001 to 0.9 kgZ25 mm, more preferably from 0.001 to 0.5 kg / 25 mm, more preferably ⁇ , 0.001 to 0.1 kg / 25 mm. More preferably, it is 0.005 to 0.1 kgZ25 mm, more preferably 0.1 to: LOOgZ25 mm, more preferably 0.1 to 50 gZ25 mm, more preferably 0.1 to 30 gZ25 mm, more preferably 0.1 to 25 gZ25 mm.
  • the coating thickness is not particularly limited, but is preferably 3 mm or less, more preferably 0.1 mm to 3 mm, and still more preferably 0.1 mm to 2 mm. More preferably, ⁇ or 0.0 .: Lmm, more preferably ⁇ or 0.01 to 500 m, more preferably ⁇ or 0.01 to: LOO / zm, more preferably ⁇ or 0.00. 40 / ⁇ ⁇ , more preferably ⁇ 0.1 to 40 ⁇ m, more preferably ⁇ 0.1 to 30 ⁇ m, more preferably ⁇ 1 to 30 ⁇ m, more preferably It is 5-30 micrometers, More preferably, it is 5-30 micrometers.
  • the coating or forming method a known forming method can be employed. Examples thereof include a hot melt coating method and a solution type coating method. Moreover, it can be in any form such as a whole surface, a partial shape, a solid shape, a net shape, a rod shape, a stripe shape, and a polka dot shape.
  • the separator when a separator is provided on the heating element, it is preferable to provide the separator so that it does not peel off the heating element force.
  • the method of using the double-sided uneven heating element of the present invention is such that the section heating section having the heat generating composition that generates heat upon contact with oxygen in the air is spaced apart from the section section that is the seal section.
  • the heating element is a double-sided uneven heating element having a heating part provided with a segmented heating part formed in a stripe shape, and both sides of the double-sided uneven heating element are formed of a convex segmenting heating part and a flat sectioning part.
  • the minimum uneven softness of the double-sided uneven heating element is 100 mm or less, one side has air permeability, and the other side has no air permeability.
  • the double-sided uneven heating element has a breathable adhesive surface having air permeability and a pressure-sensitive adhesive part, and the non-adhesive surface has no pressure-sensitive adhesive part,
  • the double-sided uneven heating element of the present invention described above is bonded to the inner side of the underwear with a stripe-shaped breathable adhesive surface. It is a method of use where the surface is in direct contact with the skin.
  • FIG. 5 is a cross-sectional view showing a case where the separator is removed in another example of the double-sided uneven heating element 1 of the present invention.
  • Striped exothermic composition formed from a moldable surplus water exothermic composition Molded body 3 is sandwiched between base material 15 and covering material 14 and enclosed in eight striped exothermic parts 4 A double-sided uneven flexible heating element 1 is provided.
  • the pressure-sensitive adhesive layer is provided as a gas-permeable pressure-sensitive adhesive layer 10 having air permeability on the gas-permeable covering material 14.
  • the pressure-sensitive adhesive layer is provided in stripes across both ends 16 in the longitudinal direction of the double-sided uneven heating element and the top of each section heating part 4 and both ends in the extension direction.
  • the minimum bending resistance is 50 mm or less. This is a double-sided uneven heating element.
  • FIG. 6 is a cross-sectional view showing a case where the separator is removed in another example of the double-sided uneven heating element 1 of the present invention.
  • Stripe-like exothermic composition formed from the moldable excess water exothermic composition 2
  • a double-sided uneven flexible heating element 1 having:
  • the pressure-sensitive adhesive layer is provided as a gas-permeable pressure-sensitive adhesive layer 10 having air permeability on the gas-permeable covering material.
  • the pressure-sensitive adhesive layer is provided in stripes on both ends 16 in the longitudinal direction of the double-sided uneven flexible heating element 1, each section 6, and the section extension 7.
  • Fig. 7 is a plan view showing a case where the separator is removed in another example of the double-sided uneven heating element 1 whose outer shape is a broad bean shape according to the present invention.
  • the segment heating part 4 near both ends in the longitudinal direction of the double-sided uneven heating element 1 is formed elongated, but the other segment heating part 4 is provided in a stripe shape with two segment heating parts 4 as a set. Yes.
  • a mesh-like breathable pressure-sensitive adhesive layer 11 prepared by a melt blow method is provided on the entire breathable surface side on a breathable coating material.
  • FIG. 8 is a plan view showing a case where the separator is removed in another example of the double-sided uneven heating element having a rectangular outer shape according to the present invention.
  • the section heating section 4 near both ends in the longitudinal direction of the double-sided uneven heating element 1 is formed to be elongated, but the other section heating section 4 is provided in stripes with three section heating sections 4 as a set. Yes.
  • a mesh-like breathable pressure-sensitive adhesive layer 11 prepared by a melt blow method is provided on the breathable coating material 14 on the entire breathable surface side.
  • the pressure-sensitive adhesive layer of the heating element is provided on the non-breathable surface side of the heating element, and the adhesive layer is mainly (1) provided in the section heating part. 2)
  • the non-woven fabric can absorb sweat and discharge it to the outside as vapor, which can further improve the heat storage prevention effect and prevent stuffiness due to moisture. At the same time, it is thought that it prevents sweat from accumulating between the adhesive and the skin, making it easier for the sheet to peel off.
  • the divided heat generating portions are provided at regular intervals, so that sufficient adhesiveness to the skin is obtained and it does not easily peel off.
  • the specific force of the width of the section heat generation section and the section section (air layer section) Sl Even if it is within the range of 1 to 2.5: 1,
  • the width is preferably 15 mm or less. Within this range, exfoliation of the heating element is further suppressed, and mounting properties are further improved.
  • the adhesive enters the nonwoven fabric, It is preferable not to allow the agent to reach the non-breathable film surface, leaving a non-woven fabric layer (gap) in which the pressure-sensitive adhesive does not enter, so that air can occur over the entire sheet surface.
  • a non-woven fabric layer in which the pressure-sensitive adhesive does not enter
  • FIG. 9 is a cross-sectional view showing another example of the double-sided uneven heating element 1 of the present invention.
  • Moldable surplus Striped exothermic composition molded body 3 formed by surplus water exothermic composition 3 is sandwiched between base material 15 and covering material 14 and enclosed in eight striped exothermic parts 4
  • a double-sided concave-convex flexible heating element 1 having:
  • An adhesive layer 10 is provided on the non-breathable substrate 15.
  • the pressure-sensitive adhesive layer 10 is provided in a stripe shape across the longitudinal end portions 16 of the double-sided uneven heating element 1 and the vicinity of the top of each section heating section 4 and the section heating section extension section 5 which is the extension direction thereof. .
  • Figure 10 (a) shows a double-sided concave and convex heat-generating sheet 26 with notches 25 at both ends of the stripe-shaped space and its extension placed in a storage bag sealed on three sides, and the other side is a heat seal. It is a double-sided uneven heating element 1 bonded together.
  • Figure 10 (b) is a cross-sectional view of PP.
  • FIG. 10 (c) is a cross-sectional view of a double-sided uneven heating element 1 having a breathable pressure-sensitive adhesive layer 10 provided in a stripe pattern on the breathable coating material 14 side.
  • the pressure-sensitive adhesive layer 10 is provided in a stripe shape on both ends 16 in the longitudinal direction of the double-sided uneven heating element 1, on each space portion equivalent region, and on both ends in the extending direction thereof.
  • the seal part is the bottom seal and the sides on both sides following it. If there is no problem with the remaining seal even if the exothermic composition molded body 26 composed of the heat generating sheet with holes is accommodated, the seals on both sides can be removed even in the middle of the seals on both sides.
  • the heat generating composition formed body 26 made of a heat generating sheet with holes is accommodated while sealing, and the sealing on both sides is completed, and then the other side is heat-sealed and bonded together by heat sealing 1 May be manufactured.
  • the heating element of the present invention is also an elastic (extensible) heating element in which an arbitrary number of staggered cuts are provided in an arbitrary region other than the section heating part.
  • to arrange the cuts in a staggered manner means to arrange the cuts so that the cuts can be deformed into a mesh or the like by stretching a packaging material of a non-stretchable material or a non-stretchable material.
  • the joints are integral, and a mesh can be formed while spreading by a certain cut length.
  • Figures 11 (a) to 11 (f) show plan views of examples of cuts.
  • the shape of the notch is not limited.
  • the planar shape is as follows: (i) straight line, (mouth) rhombus, (c) hexagon, (2) Yoloi, ( E) It can be in the shape of an ellipse, (f) circular, (g) rectangular, (h) X shape, etc.
  • rate of elongation of the cuts provided alternately, but it is preferably 1.005 to 10 times and there is no limitation on the tensile strength, but it is preferably 3 NZ50 mm or more.
  • the stretchable double-sided uneven heating element of the present invention is only required to be stretchable, but it is possible to stretch, stretchable materials such as elastomers and rubber materials, or materials using the same, materials with alternate notches, alternate notches, etc. It is preferred that a force is also constructed.
  • the extensible heating element with an incision extends in a direction substantially perpendicular to the longitudinal direction of the incision. It is sufficient that at least a part of the heating element is elongated. In particular, it is preferable that at least a part of the heating element expands and contracts.
  • the stretchable heating element (flexible heating element) of the present invention has no limitation on the elongation rate, but it depends on the application, but if the elongation rate exceeds 1, there is no limitation. However, it is preferably 1.005 to 10, more preferably 1.01 to 10, more preferably 1.01 to 5, still more preferably 1.01 to 5, and still more preferably. 1. 01 to 3, more preferably 1.01 to 2, more preferably ⁇ or 1.02 to 2, more preferably ⁇ or 1.03 to 2, more preferably Is from 1.04 to 2, more preferably from 1.05 to 2.
  • the extensibility of the present invention means that, when an external force is applied, at least a part is longer than the length before the external force is applied in the direction in which the external force is applied.
  • the length does not matter. Extensibility includes elasticity.
  • Alternating cuts usually have the function of imparting extensibility and / or stretchability
  • the stretchability of the present invention means that when an external force is applied, it stretches, and when the external force is removed, it becomes shorter than the length when stretched.
  • the degree of shortening is displayed with a shortening rate, there is no limit if the shortening rate exceeds 1, but depending on the application, it is preferably 1.005 to 10 Yes, more preferably ⁇ 1.01 to 10, more preferably ⁇ or 1.01 to 5, more preferably ⁇ 1.01 to 5, more preferably 1. 01 to 3. More preferably, it is 1.01-2, more preferably ⁇ or 1. 02-2, more preferably ⁇ or 1. 03-2, more preferably ⁇ or 1. It is 04-2, More preferably, it is 1.05-2.
  • tensile strength of the stretchable or stretchable heating element of the present invention there is no limitation on the tensile strength of the stretchable or stretchable heating element of the present invention, but a preferable example is 3N / 50 mm or more.
  • Fig. 11 (a) is an example of a rectangular double-sided uneven heating element, in which a plurality of section heating parts 4 are spaced apart and provided in a stripe shape (stripe shape).
  • 8 section heating sections 4 are provided by a section 6 consisting of a heat seal section at intervals, and a double-sided uneven heating element with flexible cuts 28 in the center section (flexible generation) Thermal body).
  • a solid pressure-sensitive adhesive layer with a separator is provided on the substrate side which is a non-breathable surface.
  • the heating element 1 may be attached to the outside of the clothes, and heat may be transmitted to the body through the clothes.
  • the body adhesive layer may be applied to the body to transmit heat to the body.
  • a double-sided uneven heating element in which a mesh-like air-permeable pressure-sensitive adhesive layer 10 with a separator 11 is provided on the coating material 14 side which is a gas-permeable surface. Put the heating element 1 on the inside of the garment and transfer heat to the body through the other side of the heating element.
  • FIG. 11 (b) is an example of a rectangular heating element, which is a plan view of the heating element 1 in which a plurality of segment heating parts 6 are provided in a streak shape (striped shape) at intervals.
  • Reference numeral 4 denotes a double-sided uneven heating element (flexible heating element) provided at intervals by dividing sections 6 each including a heat seal section, and provided with cuts 28 alternately in each dividing section.
  • a solid pressure-sensitive adhesive layer with a separator is provided on the substrate side which is a non-breathable surface.
  • the heating element 1 may be attached to the outside of the clothes, and heat may be transmitted to the body through the clothes.
  • the body adhesive layer may be applied to the body to transmit heat to the body.
  • an arbitrary number of different or different cuts may be provided in an arbitrary area other than the section heating part, and the heating element may be stretchable (extensible)!
  • the heating element of the present invention is provided with an arbitrary number of staggered cuts and perforated perforations in any region other than the divided heat generating portion, preferably at least part of the divided portion. be able to.
  • the partitioning portion can be extended by providing alternate cuts.
  • fever part can be cut
  • the heating element it is preferable to provide the heating element from one side to the opposite side.
  • the notch is arranged in a direction substantially orthogonal to the direction in which the heat generating body is elongated.
  • the notches in the present invention are formed by penetrating incisions and non-penetrating joint forces, and include shapes, types and sizes (length and width, etc.) and shapes, types and sizes (length, width, etc.) of each interval. ) Size (length, width, etc.) and their combinations can be any combination with no restrictions or any repeated combination. It is preferable that the connecting portion is shorter than the cut through.
  • At least one end of the at least one cut may or may not be in contact with at least one side of the heating element.
  • the length of the cut through that is in contact may be shorter than that of the joint portion.
  • a notch such as a V notch may be provided on the outer edge of the heating element so as to be connected to a notch such as a perforation or a staggered cut.
  • the heating element of the present invention is at least substantially orthogonal to the direction of extension of staggered cuts. It is preferable to extend
  • the extension ratio means a quotient obtained by dividing the length after extension by the length before extension.
  • the alternate cut usually has a function of imparting extensibility and stretchability.
  • the heating element can be more reliably fixed when the heating element is fixed to the body or clothes.
  • a non-stretchable (extensible) heating element can be made into a stretchable (extensible) heating element.
  • Staggered cuts with V-notches prevent the rise of cuts in the periphery of the heating element, improving the design and increasing the product value.
  • the bending resistance can be further reduced.
  • the user decides the shape according to which part of the body is heated by the heating element, and can be used by dividing it from perforated perforations, and it can be used in the shape and size suitable for the place of use. Very efficient and convenient. For example, if you want to warm the neck If it is divided into small and narrow divided heat generating portions, the object can be achieved without any bulkiness. Also, when used in both pockets, it can be used as a small rectangular heating section, which is extremely efficient.
  • the present invention is smaller in size than the conventional miniature heat generating unit, and compared to the case where the heating element is manufactured or packaged separately, a plurality of small divided heating elements are provided in one large heating element. Is included together! /, Therefore, the manufacturing method is not cut by the conventional method, and the cost is not increased simply by cutting the cut portion. In addition, since packaging can be performed with a large heating element, the packaging cost can be reduced.
  • a heating element with a V-notch and a perforated perforation makes it easier and more reliable for tearing when the hand is cut, and easily and securely separates the segmented heating section. It is possible to improve the product value.
  • the heat generating part (heat generating element) provided with a V-notched perforated perforation provided on the elastic support is easy and reliable to stretch (extensible) when the support is extended. ) It can be used as a heating element, is excellent in design, and increases product value.
  • the hand-cut perforation has a notch that penetrates, and the distance between the notch and the adjacent notch (joint part) need not be the same.
  • An example is given below.
  • the length of the cut through is preferably 10 / ⁇ ⁇ to 200 ⁇ , more preferably 10 ⁇ m to 50 mm, and still more preferably 10 ⁇ m to 30 mm, even more preferable.
  • 10 / ⁇ ⁇ to 20 ⁇ more preferably 100 111 to 20 111, and more preferably 100 m to 10 mm.
  • the length of the interval between the notch and the adjacent notch is not limited, but is preferred.
  • the thickness is preferably 1 ⁇ m to 10 mm, more preferably 1 ⁇ m to 7 mm, still more preferably 1 ⁇ m to 5 mm, and still more preferably 1 ⁇ m to 1 mm.
  • the ratio (AZ B) of the length of the cuts (A) and the shortest length (B) between adjacent cuts (AZ B) is preferably 1 or more, more preferably 1 to 50, still more preferably It is 5-40, More preferably, it is 10-30.
  • the front end of the perforation has a contact point with the side of the heating element.
  • Perforated perforations that can be cut by hand may be provided in the area other than the section heating section with arbitrary intervals in the vertical, horizontal, vertical and horizontal directions.
  • Fig. 7 (d) shows a plan view of an example of the cut.
  • the length of the notch is not limited in length, longest diameter or longest side, but preferably 1 to
  • the width and the shortest side are also not limited, preferably more than 0 and 50 mm, more preferably more than 0 and 30 mm, still more preferably more than 0 and 10 mm, still more preferably more than 0 and 5 mm. is there.
  • the mutual distance (cutting feed width, W1) in the extending direction of the opposing notches is not limited.
  • it is ⁇ , 0.5-20mm, more preferably ⁇ , 0.5-5: LOmm
  • the thickness is preferably 0.5 to 8 mm, more preferably 1 to 7 mm. More preferably, it is 2-6 mm.
  • the mutual distance (cut width, W2) orthogonal to the extension direction of the cut is not limited, but is preferably 0.5 to 20 mm, more preferably 1 to 20 mm, and still more preferably 2 to 1. It is 5 mm, more preferably 3 to 15 mm, and further preferably 5 to 15 mm.
  • an expanding cutter As an example of the means for disposing the cut, there is no particular limitation, but an expanding cutter, a rotary die cutter, a big punch, a laser, and the like can be used.
  • cuts can be easily formed on adhesive tapes and adhesive tapes with double separators, such as thick substrates, and continuous operation is possible when using a rotary die cutter.
  • staggered arrangement means that the cuts are staggered so that the cuts can be deformed into a mesh shape by extending a packaging material such as a non-stretchable material or a non-stretchable material.
  • a packaging material such as a non-stretchable material or a non-stretchable material.
  • the joint is integrated, and a mesh can be formed while expanding by a certain cut length.
  • the heating element of the present invention is preferably expanded and contracted in a direction perpendicular to the longitudinal direction of the cut, but the elongation is not limited, but it depends on the application, but preferably 1.2 to: LO Double, more preferably 1.3 to 10 times, still more preferably 1.5 to 10 times, and even more preferably 2 to 6 times. 1. If it is less than 2 times, the shape followability becomes insufficient, and if it exceeds 10 times, the opening of the mesh becomes too large and the tensile strength may decrease.
  • the expansion ratio (times) means a quotient obtained by dividing the length after expansion by the length before expansion.
  • a preferable example is 3NZ50 mm or more.
  • 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, eye use, slimming use, drip solution heating / warming For warming compresses, for warming poultices, for cervical, cervical, for lower back, for masks, for gloves, for heels, or for cushions for relief of symptoms such as shoulder pain, muscle pain, and physical pain, warming the body during surgery 'It can be used for various purposes such as heat insulation, heat sheet, transpiration fragrance, abdomen, transpiration insecticide, and medical treatment. In addition, machinery It can be used for heating and keeping warm for pets.
  • Example 1 Example 1
  • a breathable packaging material made of nylon non-woven fabric and porous polyethylene film is used as a coating, and a non-breathable packaging material made of nylon non-woven fabric and polyethylene film is used as a base material.
  • 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
  • Forming degree is 10 and it is the target.
  • this exothermic yarn and composition had a temperature rise of 10 ° C or more within 5 minutes.
  • the breathability of the coating material was 8,000 seconds ZlOOcc as measured by the Gurley method.
  • the peripheral part of the double-sided concave heating element is 8mm wide, the central part is 13mm wide, and the central part between the exothermic composition molded bodies is 9mm wide
  • the peripheral part of the exothermic composition molded body and the peripheral part of the heating element were bonded together by heating, and a double-sided convex heating element having a length of 125 mm and a width of 95 mm having six divided heating parts was prepared.
  • the separator having the adhesive layer provided in stripes corresponding to the section including the both ends and the center in the longitudinal direction of the double-sided uneven heating element and the extension of the dividing part is used as the air permeability of the double-sided uneven heating element.
  • pasting is performed in accordance with the section including the both ends in the longitudinal direction and the center, and the section extension.
  • a double-sided uneven heating element having a breathable pressure-sensitive adhesive layer with a heater was prepared.
  • the minimum bending resistance of the double-sided uneven heating element without the separator was 25 mm in the longitudinal direction perpendicular to the direction of the stripe-shaped segment heating element (L direction in FIG. 2).
  • the pressure-sensitive adhesive layer is divided along the heat-generating part, along both ends in the longitudinal direction of the double-sided uneven heating element (width 8mm), the section (width 9mm, the width of the center section area 13mm) and the section extension (width 9mm) The width of the central extension area is 13 mm).
  • the pressure-sensitive adhesive layer is provided so as to cover each end portion of the planar shape of the section heat generating part.
  • this double-sided uneven heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours.
  • 5 double-sided uneven heating elements were manufactured.
  • Example 2 a commercially available warmer having a length of 125 mm and a width of 95 mm composed of a flat, continuous heating part was used.
  • the width of the seal (bonding) part was 5 mm.
  • a striped pressure-sensitive adhesive layer similar to that in Example 1 was provided on the ventilation surface side.
  • the heating bag is taken out of the outer bag, and 7 adult men are in normal clothing in a laboratory at a temperature of 100 ° C and a relative humidity of 50%. Then, the breathable adhesive surface of the double-sided uneven heating element was affixed to the inside of the underwear corresponding to the waist, and the sense of use was examined for 5 hours.
  • a commercially available warmer as a comparative example was attached to the outside of the corresponding undergarment.
  • a temperature sensor was attached to the center of the skin surface in contact with the heating bag and the center of the heating bag in contact with the skin, and the change in temperature was measured. Further, immediately after removing the double-sided uneven heating element, the skin surface temperature of the portion where the double-sided uneven heating element was mounted was measured by a thermograph.
  • the test was repeated on the same part of the waist of 7 subjects for 8 hours a day for 3 days. Then, it was peeled off, and the condition of the skin surface was observed to evaluate the degree of redness. Table 1 shows the number of people who still have redness on the skin 30 minutes after the sheet was peeled off.
  • the heating element peels off when the pasting part is moved greatly, and there is a slight sense of incongruity.
  • the heating element peels off immediately or the heating element floats when the body is not fit
  • the heat generation sheet using hydrophilic rayon for the nonwoven fabric is less likely to cause redness and the like than the heat generation sheet using the hydrophobic nonwoven fabric. Furthermore, by providing an interval between the pressure-sensitive adhesives, it was found that it was extremely stable without causing redness or the like even when used repeatedly for a long time. In addition, the sheet was not peeled off due to perspiration and the wearability was high.
  • the double-sided uneven heating element using hydrophilic rayon for the nonwoven fabric is composed of one flat heating element, and is more difficult to produce redness and the like than the heating element using a hydrophobic nonwoven fabric. Furthermore, by providing an interval between the divided heat generating portions, it has become a component that it is extremely stable without causing redness or the like even when used repeatedly for a long time. In addition, the sheet was not peeled off due to perspiration and the wearability was high.
  • Iron powder 100 parts by weight, activated carbon (particle size 300 m or less) 5.5 parts by weight, wood powder (particle size 150 m or less) 2. 3 parts by weight, water-absorbing polymer (particle size 300 m or less) 2 3 parts by weight, 0.5 parts by weight of slaked lime, 0.2 parts by weight of sodium carboxymethylcellulose, 0.7 parts by weight of sodium sulfite, 11% saline Excess water An exothermic composition was obtained. The forming degree was 10.
  • a breathable coating material in which a nylon nonwoven fabric having a basis weight of 40 g / m 2 is laminated on a polyethylene porous film is covered on the exothermic composition molded body, and an equivalent area of the section 4 is covered.
  • the coating material and the substrate were heat sealed.
  • the section that is the seal part at the periphery of each exothermic composition molded body was heat-sealed with a seal width of 3 mm, and a section heating section divided by the section was created. Also, the outer peripheral portion of the heating element was sealed with a seal width of 8 mm.
  • a heating element having a striped segment heating part having a length of 98 mm and a width of 9 lmm was obtained.
  • the breathability of the breathable coating material was 7,000 seconds ZlOOcc as measured by the Gurley method.
  • the bending resistance was 20 mm in the long side direction (direction perpendicular to the stripe direction) of the heat generating portion, and was 80 mm or more in the short side direction (stripe direction).
  • the bending resistance ratio in the two directions that are almost perpendicular (the bending resistance Z in the direction orthogonal to the minimum bending resistance Z minimum bending resistance) was 4 or more. In this way, the stiffness in one direction is very high, and the stiffness in the direction perpendicular to that is very high.
  • this heat generating body 1 When the softness is very low, the handleability and usability are very good. Moreover, since this heat generating body 1 can be wound, it becomes compact and is convenient for storage. In the case of the heating element 1 with a separator, it can be wound by using a separator with low bending resistance.
  • the double-sided uneven heating element was sealed and stored in a non-breathable storage bag (hereinafter referred to as an outer bag) and left at room temperature for 24 hours.
  • a non-breathable storage bag hereinafter referred to as an outer bag
  • a double-sided uneven flexible heating element was prepared in the same manner as in Example 2 except that a nylon nonwoven fabric was used in place of the hydrophilic rayon.
  • the heating sheet using hydrophilic rayon for the nonwoven fabric is inferior in water absorption such as sweat and slightly inferior to the heating element using the hydrophobic nonwoven fabric. I know. In both cases, the sheet was not peeled off due to perspiration and the wearability was high.
  • the double-sided uneven heating element using hydrophilic rayon for the nonwoven fabric is composed of one flat heating element, and is more difficult to produce redness and the like than the heating element using a hydrophobic nonwoven fabric.
  • by setting the interval between the section heating parts to 3.5 to As a result it was extremely stable without causing any problems.
  • the sheet was not peeled off due to perspiration, and the wearability was high.
  • 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 when it is open to the air, it is self-heated while stirring and 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 breathable covering material in which a non-woven fabric made of nylon having a basis weight of 40 g / m 2 is laminated on a polyethylene porous film is folded on a folding odor having a pair of uneven surfaces. Fold it into a corrugated shape. Then, the valley portion of the covering material 8 is pressed against the base material with a folding tool having an uneven surface, the heat generating composition molded body is wrapped and covered in the peak portion of the covering material, and the covering material and the base material in the equivalent area of the section are heated. Sealed.
  • the section that is the seal part at the periphery of each exothermic composition molded body was heat-sealed with a seal width of 3 mm, and a section heating section divided by the section was created. Also, the outer peripheral portion of the heating element was sealed with a seal width of 8 mm.
  • the breathability of this breathable coating material is Gurley's air permeability, 8,000 seconds ZlOOcc and 7 pieces.
  • the bending resistance was 20 mm in the long side direction (direction perpendicular to the stripe direction) of the heat generating portion, and was 80 mm or more in the short side direction (stripe direction).
  • the bending resistance is almost perpendicular.
  • the bending resistance ratio in the two directions was 4 or more.
  • the heating element 1 can be wound, it is compact and convenient for storage. In the case of the double-sided uneven heating element 1 with a separator, it can be wound by using a separator with low bending resistance.

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Abstract

L'invention concerne un élément chauffant dont la souplesse ne change pas : ni avant, ni pendant, ni après la génération de chaleur provoquée par cet élément chauffant. Cet élément produit un excellent effet chauffant/réchauffant, sans provoquer de rougeurs, ni de maladies etc, même lorsqu'il est utilisé pendant longtemps. Cet élément ne présente aucun danger. L'élément chauffant (1) de l'invention présente des moulages (3) constitués d'une composition chauffante qui génère de la chaleur lors de sa mise en contact avec de l'oxygène. Ces moulages (3) sont disposés de sorte à être pris en sandwich entre une base (15) et une matière de couverture (14). Chaque moulage (3) et une partie périphérique de celui-ci sont scellés pour former des parties chauffantes séparées (4) comprenant les moulages (3) et des parties de séparation (6) comprenant des parties scellées (13). L'élément chauffant (1) de l'invention est caractérisé en ce que: il présente au moins quatre parties chauffantes séparées (4) susmentionnées; ces parties chauffantes séparées présentent chacune une longueur de 5/300 mm, une largeur comprise entre 1 et 25 mm, à l'exclusion de 25 mm, une hauteur comprise entre 0,5 et 10 mm, à l'exclusion de 10 mm, et un rapport de la longueur par rapport à la largeur compris entre 2,0 et 60; les parties de séparation (6) présentent chacune une largeur comprise entre 0,1 et 100 mm ; l'élément chauffant (1) présente une résistance minimale à la flexion inférieure ou égale à 100 mm, et un rapport minimal résistance/flexion inférieur ou égal à 60.
PCT/JP2007/050437 2006-01-13 2007-01-15 Element chauffant ondule des deux cotes WO2007081010A1 (fr)

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JP2006006806A JP2009082154A (ja) 2006-01-13 2006-01-13 両面凹凸状発熱体
JP2006-006806 2006-01-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102551951A (zh) * 2012-02-15 2012-07-11 胡秀萍 一种电热肩颈保健垫
WO2013054138A1 (fr) * 2011-10-12 2013-04-18 The Mentholatum Company Ltd Patchs chauffants
JP2013252320A (ja) * 2012-06-07 2013-12-19 Kao Corp 蒸気温熱具
GB2577857A (en) * 2018-07-29 2020-04-15 Kasim Aisha Heated hair doughnut featuring enhanced thermochemistry

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102098314B1 (ko) * 2019-05-31 2020-04-07 유지선 발열 매트리스 패드의 제조 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08231386A (ja) * 1995-02-28 1996-09-10 Felix Kk 温熱貼付剤
JP2001507593A (ja) * 1996-12-31 2001-06-12 ザ、プロクター、エンド、ギャンブル、カンパニー 使い捨て式温熱ボデーパッド
JP2003336042A (ja) * 2002-05-20 2003-11-28 Maikooru Kk 吸水性ポリマー入り発熱組成物及び発熱体
JP2004208978A (ja) * 2002-12-27 2004-07-29 Mycoal Products Corp 発熱組成物及び発熱体

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08231386A (ja) * 1995-02-28 1996-09-10 Felix Kk 温熱貼付剤
JP2001507593A (ja) * 1996-12-31 2001-06-12 ザ、プロクター、エンド、ギャンブル、カンパニー 使い捨て式温熱ボデーパッド
JP2003336042A (ja) * 2002-05-20 2003-11-28 Maikooru Kk 吸水性ポリマー入り発熱組成物及び発熱体
JP2004208978A (ja) * 2002-12-27 2004-07-29 Mycoal Products Corp 発熱組成物及び発熱体

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013054138A1 (fr) * 2011-10-12 2013-04-18 The Mentholatum Company Ltd Patchs chauffants
CN102551951A (zh) * 2012-02-15 2012-07-11 胡秀萍 一种电热肩颈保健垫
JP2013252320A (ja) * 2012-06-07 2013-12-19 Kao Corp 蒸気温熱具
GB2577857A (en) * 2018-07-29 2020-04-15 Kasim Aisha Heated hair doughnut featuring enhanced thermochemistry
GB2577857B (en) * 2018-07-29 2022-12-21 Kasim Aisha Heated hair doughnut featuring enhanced thermochemistry

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