JP2011200301A - Exothermic body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exothermic body which prevents deviation of an exothermic composition within a storing section even when the exothermic composition is hardened due to absorption of oxygen, fits easily to the shape of a part to be heated, and is suitable for heating a part that bends freely.SOLUTION: The exothermic body includes an exothermic section in which the exothermic composition including an exothermic composition molded body is stored within the storing section. The exothermic body includes one or more exothermic sections. The maximum width of the storing section is 3-25 mm, the maximum layflat width of the storing section is 3-35 mm, and the tensile strength in the longitudinal direction of a packing material forming the storing section of the exothermic section is 1.0-40 N/5 mm.

Description

The present invention is excellent in a heating element and flexibility in which the exothermic composition is not biased even when the exothermic composition is cured by absorption of oxygen, is flexible, easily fits in the shape of the heating part, and is also suitable for heating in a flexible part. It relates to a heating element.

  Conventionally, heating elements have been commercially available as used warmers. Various improvements have also been made. Usually, the heating element is housed in an outer bag, and when it is taken out from the outer bag, oxygen is absorbed from the surface of the inner bag and the heat generating composition starts to generate heat. Therefore, since the heating element accommodated in the outer bag has not yet absorbed oxygen, it is soft and can be deformed according to any shape.

Patent Document 1 discloses a heating element in which a barrier film is provided on the ventilation surface of the heating element and an outer bag is omitted.
Patent Document 2 discloses a heating element that roughly divides a storage section and tries to heat a wide area with a plurality of divided storage sections.

JP 2006-306404 A JP 2009-297274 A

  In Patent Document 1, as a heating element, like a conventional heating element, the heating composition storage unit is a heating element having a cross-sectional area wider than the shape holding force of the storage unit. Therefore, when the exothermic composition inside the packaging bag absorbs oxygen and starts to generate heat, the exothermic composition gradually hardens due to the release of heat. That is, since the exothermic composition that was soft and easy to handle at the beginning of use hardens over time, a plurality of exothermic composition lumps are formed inside the storage portion. . Therefore, during use, the exothermic composition lumps come into contact with each other and crack, covering the wall of the storage part, the wall of the storage part swells, the exothermic composition lump is partially biased, and the large lump is rugged There was a problem that a sense of incongruity occurred and it was difficult to use in reality.

  Patent Document 2 is a heating element in which each divided storage portion has a cross-sectional area wider than the shape holding force, as in the case of a conventional heating element, and during use, each storage portion has a plurality of exothermic compositions. A lump will be formed. Therefore, during use, the exothermic composition lumps come into contact with each other and crack, covering the wall of the storage part, the wall of the storage part swells, the exothermic composition lump is partially biased, and the large lump is rugged There was a problem that a sense of incongruity occurred and it was difficult to use in reality.

  In view of such circumstances, the object of the present invention is that the exothermic composition is not biased in the storage portion even when the exothermic composition is cured by absorption of oxygen, and easily fits in the shape of the heated part and can be bent freely. It is to provide a heating element suitable for heating.

  An object of the present invention is to provide a heating element that solves the above-described problems and does not bias the heating composition even when the heating composition is cured by absorption of oxygen.

In order to solve the above problems, the present invention provides:
A heating element having a heating part in which a heating composition containing a heating composition molded body is stored in a storage part,
Having at least one heating part,
The maximum width of the storage portion is 3 to 25 mm,
The maximum folding diameter of the storage portion is 3 to 35 mm;
It is a heating element whose tensile strength in the longitudinal direction of the packaging material constituting the storage part of the heating part is 1.0 to 40 N / 5 mm.

Further, the present invention is a heating element having a heating part in which the heating composition containing the heating composition molded body in the above configuration is stored in a storage part,
Having at least one heating part,
The maximum width of the storage portion is 3 to 25 mm,
The maximum folding diameter of the storage portion is 3 to 35 mm;
The heating element is a heating element having a folding diameter strength of 0.2 to 20 (N / 5 mm) / mm.

Further, the present invention is a heating element having a heating part in which the heating composition containing the heating composition molded body in the above configuration is stored in a storage part,
Having two or more divided heat generating portions that are the heat generating portions, and providing the divided heat generating portions with a separating portion that is a seal portion as an interval;
The maximum width of the storage portion is 3 to 25 mm,
The maximum folding diameter of the storage portion is 3 to 35 mm;
The heating element is a heating element having a folding diameter strength of 0.2 to 20 (N / 5 mm) / mm.

In the heating element of the present invention, the maximum folding diameter of the storage part is 3 to 35 mm, the longitudinal tensile strength of the packaging material constituting the storage part of the heating part is 1.0 to 40 N / 5 mm and / or Alternatively, since the folding diameter strength of the storage portion is 0.2 to 20 (N / 5 mm) / mm, the heating element has a storage portion in which the heat generating composition is not biased even if the heat generating composition is cured by absorption of oxygen. is there.

Since the single heating element of the present invention is a heating element using a single heating part where the heating composition is not biased,
It is a heating element that fits easily in the shape of the heated part and has excellent usability.

  The segmented heating element of the present invention is a heating element that uses two or more segmented heating parts where the heat generating composition is not biased. Therefore, the segmented heating element is excellent in flexibility, easily fits in the shape of the heating part, and heats the flexible part. It is a suitable heating element.

  The present invention can incorporate a heat generating part that does not have uneven movement of the heat generating composition even if the heat generating composition is cured by absorption of oxygen into the heat generating element. It is possible to provide a wide variety of heating element groups, including medical treatments, such as small heating elements and local heating elements (eye heating elements, knee heating elements, etc.).

(A) is a top view which shows an example of the heat generating body of this invention. FIG.1 (b) is sectional drawing of the AA. (A) is a top view which shows another example of the heat generating body of this invention. FIG.2 (b) is sectional drawing of the BB. FIG.2 (c) is sectional drawing which shows another example of the heat generating body of this invention. FIG.2 (d) is sectional drawing which shows another example of the heat generating body of this invention. (A) is a top view which shows another example of the heat generating body of this invention. FIG.3 (b) is a top view which shows another example of the heat generating body of this invention. FIG. 3C is a plan view showing another example of staggered cuts according to the present invention. (A) is a top view which shows another example of the heat generating body of this invention. FIG. 4B is a cross-sectional view taken along the line CC. FIG.4 (c) is a top view which shows another example of the heat generating body of this invention. FIG.4 (d) is sectional drawing which shows another example of the heat generating body of this invention. (A) is a perspective view which shows an example of the storage body of the heat generating body of this invention. FIG.5 (b) is a perspective view which shows an example of the storage body of the conventional heat generating body. (A) is a top view which shows an example of the folding diameter of the accommodating part of the heat generating body of this invention. FIG.6 (b) is a top view which shows an example of the folding diameter of the conventional accommodating part. These are explanatory sectional drawing of the folding diameter of the accommodating part of the heat generating body of this invention.

The present invention is a heating part, a heating element consisting of a storage part without uneven movement of the heating composition even if the heating composition is cured by absorption of oxygen,
1) A heating element having a heating part in which a heating composition containing a heating composition molded body is stored in a storage part,
Having at least one heating part,
The maximum width of the storage portion is 3 to 25 mm,
The maximum folding diameter of the storage portion is 3 to 35 mm;
It is preferable that the heating element has a longitudinal tensile strength of 1.0 to 40 N / 5 mm of the packaging material constituting the storage part of the heating part.
2) A heating element having a heating part in which a heating composition containing a heating composition molded body is stored in a storage part,
Having at least one heating part,
The maximum width of the storage portion is 3 to 25 mm,
The maximum folding diameter of the storage portion is 3 to 35 mm;
The heating element is preferably a heating element having a folding diameter strength of 0.2 to 20 (N / 5 mm) / mm.
3) A heating element having a heating part in which a heating composition containing a heating composition molded body is stored in a storage part,
Having two or more divided heat generating portions that are the heat generating portions, and providing the divided heat generating portions with a separating portion that is a seal portion as an interval;
The maximum width of the storage portion is 3 to 25 mm,
The maximum folding diameter of the storage portion is 3 to 35 mm;
The heating element is preferably a heating element having a folding diameter strength of 0.2 to 20 (N / 5 mm) / mm.

  The storage part of the present invention constitutes a heat generating part, is a space part that is sealed around and surrounded by a base material and a covering material, and stores the heat generating composition in the space part.

The bias of the exothermic composition during use is due to the movement of the body during use, the exothermic composition and the storage part moving,
This occurs when the exothermic composition pushes the inner wall of the storage unit, the inner wall of the storage unit bends, and the exothermic composition moves.
The heating element of the present invention has a maximum width of 3 to 25 mm of the storage part constituting the heat generation part, a maximum folding diameter of 3 to 35 mm, and a tensile strength in the longitudinal direction of the packaging material constituting the storage part is 1 Since the fold strength of the storage portion is 0.2 to 20 (N / 5 mm) / mm, the bias of the exothermic composition during use does not occur.
By setting the maximum width of the storage portion to 3 to 25 mm, the influence of the powerlessness (fixing force) of the peripheral portion of the storage portion on the heat generating composition is increased, and the folding strength of the storage portion is set to 0.2 to 0.2 mm. By setting it to 20 (N / 5 mm) / mm, the peripheral portion of the storage portion was hardly deformed by the weight of the exothermic composition. As a result, it was possible to form a storage portion in which the exothermic composition did not move to a part of the storage portion and the inner wall of a portion of the storage portion was not bent by the weight of the exothermic composition.

  The “maximum width of the storage portion” of the present invention is the maximum distance between the seal portion end portion and the seal portion end portion in the maximum width direction, which is the space portion of the storage portion.

  The folding diameter of the storage portion of the present invention is the length in the maximum width direction of the space portion of the storage portion when the tube-shaped storage portion is flattened. That is, it is half of the peripheral distance (circumference etc.) of the tube-shaped storage part.

  In the present invention, the folding diameter strength of the packaging material such as the target laminated packaging material is not limited in the direction in the packaging material, in any direction of the packaging material such as the target laminated packaging material, If it has a desired folding diameter strength, the folding strength may be the folding strength of the packaging material.

  The maximum width and the maximum folding diameter of the storage portion of the present invention are measured at room temperature, preferably at 23 ° C.

The storage unit of the present invention only needs to have a fold diameter strength of 0.2 to 20 (N / 5 mm) / mm in any direction in any region in the storage unit as the fold diameter strength. .
The folding diameter strength of the present invention is a folding diameter strength using the maximum folding diameter of the storage portion and the tensile strength of the storage portion.
The 40 ° C. folding diameter strength of the present invention is the folding strength using the tensile strength of the storage section at 40 ° C.

The folding diameter strength of the present invention is equivalent to 1) a sample taken from the heating element storage part, 2) a sample taken from the packaging material that manufactured the heating element storage part, and 3) equivalent to the heating element storage part (same product) No., etc.) is defined from the folding diameter of the storage section using the tensile strength of one type of sample selected from any of the samples collected from the packaging material.
The folding strength of the present invention is preferably 1) measured and calculated using a sample collected from the storage part of the heating element, but 2) when a sample for measurement cannot be collected due to size mismatch. A sample collected from the packaging material from which the heating element storage part was manufactured, and 3) one sample selected from any of the samples collected from the packaging material equivalent to the heating element storage part (same product number, etc.) It is preferably used, measured and calculated.

The fold diameter strength of the present invention is the tensile strength of the packaging material constituting the storage portion per unit length of the maximum fold diameter in the width (short direction) of the storage portion. It is shown by the following formula.

K = H / S

K: Folding diameter strength
H: Tensile strength of storage (N / 5mm)
S: Maximum folding diameter in the short direction of the storage part (mm)

The tensile strength of the storage portion is the tensile strength of the packaging material constituting the storage portion, and the tensile strength in the longitudinal direction of the packaging material constituting the storage portion is preferable. Of the base material side and the covering material side, the tensile strength of the side having air permeability is adopted. When both surfaces have air permeability, it is sufficient that at least one is within the specified range.

The sample for measuring the tensile strength of the storage portion of the present invention is preferably a sample collected from the longitudinal direction constituting the storage portion of the heating element.
The tensile strength of the present invention is equivalent to 1) a sample taken from the heating element housing part, 2) a sample taken from the packaging material that produced the heating element housing part, and 3) equivalent to the heating element housing part (same product number) Etc.), the tensile strength of one type of sample selected from any of the samples collected from the packaging material is used and is defined from the folding diameter of the storage portion.
The tensile strength of the present invention is preferably 1) measured and calculated using a sample collected from the heating element storage part, but 2) if the sample for measurement cannot be collected due to size mismatch, etc. A sample collected from the packaging material from which the body storage part was manufactured, 3) One sample selected from any of the samples collected from the packaging material equivalent to the storage part of the heating element (same product number, etc.) It is preferably measured and calculated.

The tensile strength of the present invention is preferably measured according to JIS L1096.
The temperature for measuring the tensile strength of the present invention is preferably 23 ° C.
The width of the sample for measuring the tensile strength of the present invention is preferably 5 to 30 mm, more preferably 25 mm. More preferably, it is 10 mm, More preferably, it is 5 mm. The distance between chucks is preferably 5 to 100 mm, more preferably 50 mm, further preferably 25 mm, further preferably 10 mm, and further preferably 5 mm. The distance between chucks is determined from 5 to 100 mm according to the length of the sample.

  The tensile strength in the longitudinal direction of the packaging material constituting the housing part of the heat generating part of the present invention is 1.0 to 40 N / 5 mm, preferably 1.0 to 30 N / 5 mm, more preferably 1.0 to 25 N / 5 mm, more preferably 1.4 to 25 N / 5 mm, still more preferably 1.5 to 25 N / 5 mm, still more preferably 1.5 to 22 N / 5 mm, still more preferably 1. It is 8-22N / 5mm, More preferably, it is 1.8-20N / 5mm, More preferably, it is 5-20N / 5mm, More preferably, it is 9-20N / 5mm, More preferably, it is 10-20N / 5 mm.

The folding diameter strength of at least one storage portion of the heat generating portion of the present invention is 0.2 to 20 (N / 5 mm) / mm, preferably 0.2 to 15 (N / 5 mm) / mm, and more Is preferably 0.2 to 10 (N / 5 mm) / mm, more preferably 0.3 to 10 (N / 5 mm) / mm, and further preferably 0.3 to 7 (N / 5 mm) / mm. mm, more preferably 0.3 to 5 (N / 5 mm) / mm, still more preferably 0.4 to 3 (N / 5 mm) / mm, still more preferably 0.5 to 2 (N / 5mm) / mm.
If the fold strength is less than 0.2 (N / 5 mm) / mm, the storage portion cannot withstand the weight of the stored exothermic composition, the bending occurs, the exothermic composition moves, and the exothermic composition moves. This bias occurs. When the fold diameter strength exceeds 20 (N / 5 mm) / mm, the hardness of the storage portion becomes strong, and the flexibility and usability of the heating element deteriorate.

  The maximum folding diameter of the width of the storage portion of the present invention is 3 to 35 mm, preferably 3.1 to 35 mm, more preferably 3.5 to 35 mm, and further preferably 3.5 to 30 mm. More preferably, it is 5-30 mm, More preferably, it is 5-25 mm, More preferably, it is 5-20 mm, More preferably, it is 5-18 mm, More preferably, it is 10-18 mm, More preferably, it is 10 ~ 15 mm.

  The maximum width of the storage portion of the present invention is 3 to 25 mm, more preferably 3 to 20 mm, still more preferably 5 to 20 mm, still more preferably 5 to 18 mm, and further preferably 5 to 15 mm. Yes, more preferably 8 to 15 mm.

The maximum length of the storage unit of the present invention is 5 to 200 mm, preferably 5 to 150 mm, and more preferably 7 to 150 mm.

  The ratio of the volume of the exothermic composition (exothermic composition molded body, etc.) to be stored to the volume of the storage portion of the present invention is preferably 0.5 to 1.0, more preferably 0.6 to 1.0. More preferably, it is 0.7-1.0, More preferably, it is 0.8-1.0, More preferably, it is 0.9-1.0.

  The ratio of the height of the stored exothermic composition (such as the exothermic composition molded body) to the height at or near the center of the storage section of the heating section of the present invention is preferably 0.8 to 1. It is 0, More preferably, it is 0.9-1.0, More preferably, it is 1.0.

  The heating element of the present invention is a heating element in which a heating composition is stored in a storage part, and has a single heating element having a single heating part as one heating part and two or more divided heating parts. There is a classification heating element. A heat generating part having two or more divided heat generating parts is a divided waveform heat generating part. The section heating element has a section waveform heating portion.

  An example of the single heating element of the present invention is a small heating element. ,

The section heating element of the present invention has two or more section heating sections, and the section heating section having the storage section is disposed with the section section as an interval, so that the heating composition is cured by absorption of oxygen. Even if it does not generate | occur | produce the bias | inclination of a heat-generating composition, since it bends easily in a division part, it can be made to fit the shape of a use location easily.
The divisional heating element of the present invention includes a flexible heating element, a stripe heating element, a detachable heating element, a stretchable heating element, a band heating element, a tunnel ventilation heating element, a drug heating element, a detachable tunnel ventilation heating element, and a detachable drug heating element. Examples include eye temperature heating elements, face temperature heating elements, absorptive heating elements, foot temperature heating elements, moisture-permeable outer bag heating elements, outer temporary folding folding heating elements with outer bags, and the like.

  The narrow heating element of the present invention is a single heating part heating element having one section heating part having a width of 20 mm or less.

The flexible heating element of the present invention has a minimum bending resistance of 70 mm or less and a loop stiffness of the heating element storage body of 700 mN / cm or less. It is a flexible heating element.

  In the stripe heating element of the present invention, two or more divided heating portions are provided in a stripe shape.

The separable heating element of the present invention is a section heating element provided with perforated lines (intermittent cuts) that can be manually cut in a region other than the section heating section of the section heating element of the present invention. A segment heating part heating element having perforated perforations in at least one section is preferable.
The separable heating element of the present invention can be cut into desired small heating elements along any perforation, and several separated small areas can be heated simultaneously if desired.

  The expansion / contraction heating element of the present invention is a heating element in which staggered cuts are provided in at least one area other than the section heating section. In particular, a heating element having staggered cuts in at least one section is preferable. It is also preferable to increase the stretchability of the stretchable heating element by providing staggered cuts in a large number of sections.

  The band heating element of the present invention has a long stretchable support. An example is one in which a segmented waveform heating part or a segmented waveform heating part heating element is fixed to a long stretchable support via an adhesive or the like. As the stretchable support, a non-stretchable packaging material provided with alternate cuts, a stretchable packaging material, or a known stretchable packaging material can be used.

The tunnel ventilation heating element of the present invention has a structure in which a local ventilation material is coated on a wide ventilation section that comes into contact with a heating composition (water-containing heating composition, water-containing heating composition, etc.) of a segmented waveform heating section. It is a heat generating body which consists of a structure which has a ventilation path (tunnel) between ventilation parts.
The local ventilation member of the present invention may be provided with ventilation holes, but it is preferable that the size of one ventilation hole is larger than the size of one ventilation hole in the wide area ventilation part. The number of vents is preferably smaller than the number of wide area vents. There is no restriction on the method of constructing the ventilation portion.

  The drug heating element of the present invention is such that at least a part of the segmented waveform heating unit composed of the segmented heating unit and the segmented portion is covered with a local ventilation material having a vent, A space is formed from the local ventilation material, and the local ventilation material is a heating element fixed by a seal at least around the entire heating element. A chemical heating element in which a local ventilation material is fixed to at least a part of the top of one or more segmental heating parts via an adhesive layer made of an adhesive or an adhesive, and a local ventilation material of the segmental heating part There is a drug heating element that is not fixed to the top.

  The separable tunnel ventilation heat generating body of the present invention has a perforation that can be cut into at least one or more of the fixed section portions, wherein the local ventilation material of the tunnel ventilation heat generating body is fixed to at least one or more section portions. Is provided. Examples of the local ventilation material include non-breathable packaging materials, breathable packaging materials, and nonwoven fabrics. The packaging material used for the base material and coating | covering material of this invention can be used.

  In the detachable drug heating element of the present invention, the local ventilation material of the drug heating element is fixed to at least one section, and a perforated line is provided in at least one of the fixed section. It is a thing.

  The tunnel ventilation heating element and the drug heating element having the local ventilation material with the ventilation blocking sheet do not generate heat until the ventilation blocking sheet is removed, and can be stored for a long time. Can be used. Since the packaging material of the outer bag can be omitted, the amount of garbage is reduced and it can contribute to environmental problems. It is useful to provide a fixing means on at least a part of the exposed portion of the tunnel ventilation heating element and the drug heating element including the local ventilation material. A non-breathable packaging material (including a laminated body) can be used as the ventilation block sheet. Known non-breathable packaging materials (including laminates) can also be used.

The face temperature heating element of the present invention is a heating element that can cover the face.
In particular, a face temperature heating element that heats the eyes and the vicinity thereof is referred to as an eye temperature heating element.
A face temperature heating element that heats the nose and its surroundings is referred to as a nasal temperature heating element.

The eye temperature heating element of the present invention is a heating element for heating the eye and its surroundings.
1) A water-containing exothermic composition, exothermic composition molded body, etc. are sandwiched between a non-breathable base material and a breathable coating material, and the periphery is sealed. It is provided via a sealed fixing part, a V notch is provided on the upper side of the central part, a lower side corresponding to the periphery of the nose is a curved surface, and a plurality of divided heating parts such as three on each side are provided. Eye heating element provided,
Further, in the eye temperature heating element of the present invention, the V notch may be replaced with a V-shaped notch or a curved surface or the like may be cut into the center portion and processing such as a notch or a curved surface may be added.
2) Each end of the ear hook part with a hole provided with a cut (perforation) that can be cut in the center is fixed via a fixing part sealed at both ends of the heating element body, and the upper part of the center part. V-notch is provided on the bottom of the nose and the lower side corresponding to the peripheral edge of the nose is curved.
3) A texture material made of non-woven fabric is provided on both sides of the eye temperature heating element. An example is an eye heating element in which a space portion is formed between the sorting portion and the texture material.
Moreover, you may replace at least one of this feel material with a local ventilation material or a local ventilation material with a feel material. For example, the texture material on the eye side may be replaced with a local ventilation material or a local ventilation material with a texture material.

The mask-shaped face temperature heating element of the present invention is a mask-shaped heating element.
1) Ear rubber or ear straps are provided at both ends, the central section is wide, and one or more, preferably three or more separate heat generating sections are provided on both sides. Integrated mask-shaped facial heating element,
2) A heating element provided with a heating element storage part supported by the heating element holding part and having ear rubber at both ends. Built-in mask-type facial heating element that uses a segment heating element such as a stripe heating element in the mask.
3) A mask-shaped face temperature heating element or the like in which the segmental waveform heating unit is a segmented waveform heating unit having a structure of a tunnel ventilation heating element or a drug heating element.

The nasal heating element of the present invention is a nasal heating element. This is an integrated heating element in which one or more, preferably one heating element is provided on each side of the central section, and at least a region corresponding to both sides of the nose can be heated.
If the segmented waveform heating unit is a segmented waveform heating unit having the structure of a tunnel ventilation heating unit or a drug heating unit, it can be used at a more appropriate temperature.

  The foot temperature heating element of the present invention may be a heating element formed in a shape that covers any part of the foot, for example, a shape that covers a part of the back side of the foot, a shape that covers the entire back side of the foot (all feet Shape), a shape that covers a part of the back of the foot, a shape that covers the whole of the back of the foot, a part or all of the back side or the back of the foot, and a part or all of the side of the foot Examples thereof include a heating element having a shape or a shape that covers a part or all of the back side of the foot, a part or all of the side of the foot, and a part or all of the back side of the foot. . Moreover, a recessed part etc. may exist in the center part etc. of a heat generating body.

  The heat generating body with a moisture-permeable outer bag of the present invention is a natural environment that is not damaged after encapsulating the heat-generating composition formed body obtained by molding the excess water heating composition in a moisture-permeable outer bag having a moisture permeability of 10 g / l or less. And holding time maintained under one control environment selected from an environment having a holding temperature of 1 to 80 ° C. and a holding humidity of 1 to 90%, at least 25 hours to 2 years, It is a heating element with excellent exothermicity in which the excess water exothermic composition is a hydrous exothermic composition that does not contain excess water.

The absorptive heating element of the present invention is composed of two or more divided heat generating portions and one or more divided portions,
An absorptive heating element having a segmented waveform heating section or a heating element in which a section between the segment heating sections functions as an air passage. Unlike the case of one normal heat generating part, stable heat generation can be obtained.
An absorptive heating element that has a vertically long shape in plan view and is composed of a front part, an intermediate part, and a rear part in the longitudinal direction, and includes an absorber (absorbing part) and a sectional waveform heating part. Absorbent heating element with outer bag, Absorbent heating element with outer corrugated heating part or heating element provided outside the absorber, Absorbent heating element with outer bag with absorbent heating element enclosed in outer bag ( There is an individual package).

  The outer temporary folding folding heating element with an outer bag of the present invention has at least one heating element folded and enclosed in an outer bag, and at least a part of the heating element and a part of the outer bag are fixed via an adhesive layer. It is a heating element.

The shape of the heating element of the present invention, that is, a single heating part, a single heating element, a section heating section, a section waveform heating section, and a section heating body is not limited,
Flat shape, circle, ellipse, football shape, triangle, square, rectangle, hexagon, polygon, star shape, flower shape, ring shape, flat shape, eye mask shape, saddle shape, saddle shape, rounded rectangle, rounded corner Examples include square, oval, boomerang, maggot, star, wing, nose, lantern, full foot, partial foot. The airfoil is suitable around the neck and shoulders.
In addition, the shape of the single heating part, single heating element, section heating section, section waveform heating section, section heating element described in the present specification is a modification of the present invention based on the shape described in the present invention. Including.
According to the shape of the heating element of the present invention, the length, maximum width, height, etc. of the single heating part and the section heating part can be changed, and the combination thereof is not limited.

It is preferable to provide an incision in the region excluding the section heating portion of the section heating element of the present invention.
The cuts of the present invention are preferably intermittent cuts, and cuts that can be cut by hand (perforations) and stretchable alternating cuts are preferred.

  The “classified heat generating portion” of the present invention is a single heat generating portion constituting a sectioned waveform heat generating section or a section heat generating body, and a heat generating composition (excess water-containing heat generating composition, water-containing heat generating composition, heat generating composition molding). A body storage area. Alone, it functions as a heating element. This is a non-sealed region where the packaging material is not sealed, and is a region that accommodates the exothermic composition molded body.

  The “partition portion” of the present invention is a non-housing area of a heat generating composition (such as a surplus water heat generating composition, a water containing heat generating composition, a heat generating composition molded body), and a seal area. Between the segment heat generating portion and the segment heat generating portion is a connecting portion, which is a hinge (bending region). Examples of the seal area include a heat seal area, an adhesive (pressure sensitive adhesive) seal area, and an adhesive seal area. In particular, the section is preferably a heat seal region (heat seal portion).

The “plurality of divided heat generating portions” of the present invention means two or more, preferably three or more, more preferably four or more divided heat generating portions.
The “plurality of sections” in the present invention means two or more, preferably three or more, more preferably four or more sections.

  The divided heat generating portion of the present invention has a convex shape at least on one side with the dividing portion as a boundary, and is composed of a top portion and a side portion.

In the present invention, an area corresponding to a corner (an end corner) of a heating composition molded body, a single heating section, a single heating element, a section heating section, a section waveform heating section, a section heating body, a seal section, etc. The corners may be curved or curved.
The shape of the round shape (substantially arc shape) is not limited, but the radius of curvature is preferably 0.1 to 20.0 mm, more preferably 0.1 to 10.0 mm, and still more preferably 0.00. 1
It is -5.0mm, More preferably, it is 0.2-5.0mm, More preferably, it is 0.2-3.0mm, More preferably, it is 0.2-2.0mm.

There is no limitation on the size of the single heat generating portion and the size of the section heat generating portion, but the following sizes are preferable in a rectangular shape, a rectangular similar shape, or the like.
The maximum length is preferably 5 to 200 mm, more preferably 5 to 150 mm, and still more preferably 7 to 150 mm.
The maximum width is preferably 3 to 25 mm, more preferably 3 to 20 mm, still more preferably 5 to 20 mm, still more preferably 5 to 18 mm, still more preferably 5 to 15 mm, and still more preferably. Is 8-15 mm.
The height is preferably 0.1 to 10 mm, more preferably 0.2 to 10 mm, still more preferably 0.2 to 7 mm, and further preferably 1 to 7 mm.

  The storage body of the present invention and the conventional storage body will be described with reference to FIGS.

Fig.5 (a) is a perspective view which shows an example of the storage body of the heat generating body of this invention.
This example is an example of a heating element storage body 1 according to the present invention, in which a base material 14 and a covering material 15 are combined, a peripheral portion is sealed, and a rectangular storage body having a storage portion 3 surrounded by a seal portion 7. 1. The sectional space portion 5 of the storage portion is smaller than the sectional space portion of the conventional heating element. Since the storage unit 3 is rectangular, all the widths of the storage unit 3 are the same, and the width is the maximum width 28 of the storage unit 3.

FIG.5 (b) is a perspective view which shows an example of the storage body of the conventional heat generating body.
This example is an example of a conventional heating element storage body 2, and a rectangular conventional one having a conventional storage portion 4 in which a base material 14 and a covering material 15 are combined, a peripheral portion is sealed, and is surrounded by a seal portion 7. It is the storage body 2 of the heating element. The sectional space portion 6 of the conventional storage portion is larger than the sectional space portion 5 of the storage portion in FIG. Since the conventional storage portion 4 is rectangular, all the widths of the conventional storage portion 4 are the same, and the width is the maximum width 28 of the conventional storage portion 4.

Fig.6 (a) is a top view which shows an example of the folding diameter of the accommodating part of the heat generating body of this invention.
This example shows the maximum folding diameter 8 and the maximum width 28 of the storage part surrounded by the seal part 7 of the storage body 1 of the present invention. Since the storage portion 3 of this example is rectangular, all the folding diameters are the same, and the folding diameter is the maximum folding diameter 8 of the storage portion.
In this example, the maximum fold diameter 8 of the storage portion is small, the fold strength is effective in preventing deformation of the storage portion 3, the stored heat generating composition is difficult to move, and the storage portion 3 is not deformed.

FIG.6 (b) is a top view which shows an example of the folding diameter of the accommodating part of the conventional heat generating body.
This example shows the maximum folding diameter 9 and the maximum width 28 of the conventional storage part surrounded by the seal part 7 of the conventional heating element storage body 2. Since the conventional storage portion 4 of this example is rectangular, all the folding diameters are the same, and the folding diameter is the maximum folding diameter 9 of the conventional storage portion.
In this example, the maximum folding diameter 9 of the conventional storage unit is large, and the strength of the fold diameter does not work effectively to prevent deformation of the conventional storage unit 4, and the exothermic composition stored is easy to move.

FIG. 7 is an explanatory cross-sectional view of the folding diameter of the storage portion of the heating element of the present invention.
This example shows a cross-sectional space portion 5 of the storage portion that is a cross section in the maximum width direction of the storage portion 3 surrounded by the base material 14 and the covering material 15, and a, b, c, and d of the cross-section are stored. This is the length of each side of the inner cross section of the portion 3.
From FIG. 7, the folding diameter P of the storage part of the heating element of the present invention is half of the sum (circumference etc.) of the length of each side inside the storage part 3.
That is
P = (a + b + c + d) / 2

P is the folding diameter of the storage part of the heating element
a, b, c, d are lengths of each side of the inner cross section of the storage section

It is. Here, d is also the maximum width of the storage unit.

  The heating element of the present invention will be described with reference to FIGS.

Fig.1 (a) is a top view which shows an example of the heat generating body of this invention.
FIG.1 (b) is sectional drawing of the AA.
This example is an example of an elongate single heating element 10A composed of a single heating part 11 having a maximum width of 10 mm. It can be used as a heating element for mitigating colic or a heating element for local heating.
An exothermic composition molded body 16 is provided between the base material 14 which is a non-breathable surface and the breathable coating material 15. An adhesive layer 23 with a separator 25 is provided on the non-breathable base material 14 side. Reference numeral 7 denotes a seal portion.
Although not shown, instead of the pressure-sensitive adhesive layer 23 with the separator 25 on the non-breathable base material 14 side, the heat generation is provided with the SIS type air-permeable pressure-sensitive adhesive layer with the separator 25 on the coating material 15 side that is the air-permeable surface. The body is also preferred.

Fig.2 (a) is a top view which shows another example of the heat generating body of this invention.
FIG.2 (b) is sectional drawing of the BB.
The heating element of this example is a divided heating element 10 having six divided heating portions 12.
The peripheral part of the exothermic composition molded body 16 sandwiched between the breathable coating material 15 and the base material 14 and the peripheral part of the heat generating element 10 are heat-sealed, and the base material 14 which is a non-air-permeable surface is coated with an acrylic adhesive. An adhesive layer 23 is provided, and a separator 25 is provided thereon. Six rectangular heat generating portions 12 are provided with the dividing portions 13 as intervals.
There is no change in flexibility before and after heat generation (before and after use).
The section heating element 10 may be affixed to the outside of the garment and heat may be transmitted to the body through the garment. The body adhesive layer 23 may be directly applied to the body to transmit heat to the body. May be. Moreover, both surfaces may be made into a breathable surface, and may be affixed on the inner side of clothes or the like, or directly affixed to the body, and water vapor generated from the segment heating element 10 may be applied to the body side.

FIG.2 (c) is sectional drawing which shows another example of the heat generating body of this invention.
This example is another example of the sectional heating element 10 having six sectional heating sections 12.
The exothermic composition molded body 16 is sandwiched between the base material 14 which is a non-breathable surface and the breathable coating material 15, and the peripheral portion of the exothermic composition molded body 16 and the peripheral portion of the segmented heat generating body 10 are heated. It is the division heating element 10 which is sealed and is not provided with the adhesive layer.
Although not shown, both sides of the section heating element 10 having the section heating section 12 are made to be breathable surfaces, and a breathable pressure-sensitive adhesive layer or a partially provided breathable pressure-sensitive adhesive layer is attached to the body side, Water vapor generated from the segment heating element 10 may be applied to the body side.

FIG.2 (d) is sectional drawing which shows another example of the heat generating body of this invention.
The heating element of this example is another example of the sectional heating element 10 having six sectional heating sections 12.
An exothermic composition molded body 16 is provided between the non-breathable base material 14 and the breathable coating material 15, and a SIS breathable pressure-sensitive adhesive layer with a separator 25 on the breathable coating material 15 side. 24 is a section heating element 10 provided with 24.
A ventilation surface side is attached to the inside of clothes such as underwear, and heat is transmitted to the body through the non-ventilation surface of the heating element 10.
The heating element 10 is attached to the outside of the garment, and heat is transmitted to the body through the garment, and the breathable pressure-sensitive adhesive layer 24 for the body is applied to the body so that the heat is transmitted to the body. It is also preferable. It is also preferable to make both surfaces breathable and to apply water vapor generated from the segment heating element 10 to the body side.

Fig.3 (a) is a top view which shows another example of the heat generating body of this invention.
The heating element of this example is a section heating element 10, which has twelve section heating sections 12, each section section 13 is provided with intermittent cuts (perforations) 21, and two from each section section 13. It is a detachable heating element that can separate the divided heating portions 12 as a set.
In addition, the intermittent cuts (perforations) 21 are in contact with the sides of the segmented heating element 10. However, the perforations 21 may not be in contact with the sides of the heating element 10 as long as they can be cut by hand. Good.
Moreover, it can cut into a heating element of a desired size along an arbitrary intermittent cut (perforation) 21, and the separated heating element is used as a small heating element to warm a plurality of small regions such as the body. be able to.
Although not shown, it is also preferable to provide a V-notch in the peripheral portion of the segment heating element 10 so as to contact the end of the intermittent notch (perforation) 21.

FIG.3 (b) is a top view which shows another example of the heat generating body of this invention.
The heating element of this example is a segment heating element 10, which is an expansion / contraction heating element in which six segment heating units 12 are provided in one direction and three staggered cuts 22 are provided in three segmentation units 13. is there.
The present stretchable heating element is deformable in the longitudinal direction, that is, can be expanded and contracted because the alternate notches 22 are reversibly deformed in a substantially mesh shape in the longitudinal direction, which is a direction orthogonal to the direction of the alternate notches 22. .
It is also useful to further provide staggered cuts 22 in the other section 13 to increase the stretchability of the stretchable heating element.
Although not shown, a V-notch may be provided so that at least a part of the end of the staggered notch 22 abuts on the staggered notch 22 provided in the peripheral portion of the heating element 10.
FIG. 3C is a plan view showing another example of staggered cuts according to the present invention.
The alternate cuts 22 have two cuts at the ends.

Fig.4 (a) is a top view which shows another example of the heat generating body of this invention.
FIG. 4B is a cross-sectional view taken along the line CC.
The heating element of this example is a segment heating element 10, which is an eye temperature heating element having six segment heating elements 12.
The exothermic composition molded body 16 is sandwiched between the non-breathable base material 14 and the breathable coating material 15, the peripheral portion of the exothermic composition molded body 16 is sealed, and the both ends are provided with ears with holes. It is provided via a fixed part 18 to which the hanging part 17 is fixed. A V notch 26 is provided on the upper side of the central part, and a lower side corresponding to the peripheral part of the nose is a curved surface. A portion 12 is provided. Further, it is preferable that the main temperature heating element is cut into the central portion such as by changing the V notch 26 into a V-shaped notch or making it a curved surface, and processing such as a notch and a curved surface is added. Reference numeral 13 denotes a section, and 20 denotes a hole.
FIG.4 (c) is a top view which shows another example of the heat generating body of this invention.
The heating element of this example is the segment heating element 10, which is another example of the eye temperature heating element.
The eye side of this temperature heating element is shown. Each end portion of the ear hooking portion 17 with a hole provided with a cut (perforation) 21 that can be cut in the center is fixed via fixing portions 18 sealed at both ends of the heating element body. A V notch 26 is provided on the upper side, and the lower side corresponding to the peripheral edge of the nose is a curved surface. 20 is a hole.
FIG.4 (d) is sectional drawing which shows another example of the heat generating body of this invention.
The heating element of this example is a segment heating element 10, which is another example of a temperature heating element having six segment heating units 12. A texture material 19 made of non-woven fabric is provided on both sides of the main temperature heating element. A ventilation path 27 is formed between the sorting portion 13 and the texture material 19.
The exothermic composition molded body 16 is sandwiched between the non-breathable base material 14 and the breathable coating material 15, the peripheral portion of the exothermic composition molded body 16 is sealed, and the both ends are provided with ears with holes. The hook portion 17 may be provided via the sealed fixing portion 18, and at least one of the texture members 19 may be replaced with a local ventilation material or a local ventilation material with the texture material 19. For example, the texture material 19 on the eye side may be replaced with a local ventilation material or a local ventilation material with a texture material 19. 20 is a hole.

The exothermic composition of the present invention includes iron components such as iron powder, carbon components, reaction accelerators and essential water components,
There is no limitation as long as heat is generated in an atmosphere containing oxygen such as air. The exothermic composition currently used for the well-known disposable body warmer and a heat generating body can be used.

The exothermic composition of the present invention contains water, and there are exothermic composition molded bodies, a hydrous exothermic composition with a surplus water value of 0, and a surplus water exothermic composition with a surplus water value of more than 0.
The surplus water-containing exothermic composition of the present invention has moldability because the surplus water works as a linking agent, and can be formed into various shapes by molding using a mold.

  The exothermic composition molded body of the present invention is not limited as long as the excess water exothermic composition is molded using a mold.

  The mold of the present invention is not limited as long as the surplus water heating composition can be molded, but a flat plate mold having through holes and recesses, a sheet mold having through holes that can be attached to a chain conveyor-like rotating body, and a hollow cylinder As an example, there may be mentioned a through-hole or a concave mold provided on the peripheral surface of the rotary member.

  Molding of the exothermic composition molded body of the present invention is not limited as long as the exothermic composition molded body can be molded by molding using the excess water exothermic composition and the mold. As a method for producing a heating element by molding, the excess water heating composition is laminated on a base material which is a packaging material as a heating composition molding through a through hole of a mold having a through hole, and further coated with a coating material And sealing the peripheral part of the said heat-generating composition molded object is mentioned as an example.

The exothermic composition molded body obtained by molding the excess water exothermic composition also includes a compressed exothermic composition compressed body.

  The surplus water value of the surplus water-containing exothermic composition of the present invention is greater than 0, preferably 0.1 or more, more preferably 0.5 to 80, still more preferably 1 to 80, and still more preferably. Is 5 to 80, more preferably 5 to 70, still more preferably 5 to 65, still more preferably 5 to 60, still more preferably 5 to 55, still more preferably 10 to 55. Yes, more preferably 10-50, still more preferably 10-40, still more preferably 10-35, and even more preferably 10-30.

  When molding the surplus water exothermic composition of the present invention, the surplus water value of the surplus water exothermic composition of the present invention is preferably 0.5 to 80, more preferably 1 to 80, still more preferably. Is 5-80. It is preferable to appropriately select from 0.5 to 80 according to the situation.

In addition to the essential components, the exothermic composition may be added by appropriately selecting other components in addition to the essential components such as iron powder, carbon component, reaction accelerator and water. Other ingredients to be added include water retention agents such as wood flour and vermiculite, water-absorbing polymers such as crosslinked poly (meth) acrylic acid and poly (meth) acrylamide, hydrogen generation inhibitors such as sodium sulfite, and slaked lime. Examples include pH adjusters, fibrous substances such as pulp, molding aids, functional substances, and the like.
A known exothermic composition and known exothermic composition components can be used for the exothermic composition of the present invention.

The mixing ratio of the exothermic composition is not particularly limited, but 0.01 to 100 parts by weight of a carbon component, 0.01 to 50 parts by weight of a reaction accelerator, and water with respect to 100 parts by weight of an iron component. The blending ratio is preferably selected so as to be 1.0 to 60 parts by weight.
Furthermore, you may add another component suitably.

The iron powder is not limited, but cast iron iron powder, atomized iron powder, electrolytic iron powder, reduced iron powder, sponge iron powder, and iron alloy powder thereof can be used as an example. Further, these iron powders may contain carbon or oxygen, or may contain other metals with a metal containing 50% by weight or more of iron (at least part of the iron surface is an oxygen-containing film). Iron powder etc.).
The type of metal contained as an alloy or the like is not particularly limited as long as the iron component acts as a component of the exothermic composition, but examples include metals such as aluminum, manganese, copper, and silicon, and semiconductors. The metal of the present invention includes a semiconductor. Examples of the iron powder having a fibrous form and other metals include steel fibers, aluminum fibers, and magnesium fibers.
In the iron powder of the present invention, the content of the metal other than iron is usually 0.01 with respect to the whole iron powder.
-50% by weight, preferably 0.1-10% by weight.

The carbon component is not limited as long as it is a carbonaceous material. Activated carbon (coconut shell charcoal, charcoal powder,
(Calendar bituminous coal, peat, lignite), carbon black, acetylene black, graphite, carbon nanotube, carbon nanohorn, and the like. Moreover, the thing of fibrous forms, such as activated carbon fiber, can also be used.

The reaction accelerator is not limited as long as it can accelerate the exothermic reaction. Examples include inorganic electrolytes such as sodium chloride, potassium chloride, and calcium chloride. A known disposable body warmer or an electrolyte used for a heating element can also be used. These reaction accelerators are not targeted for the particle size (particle size).

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. Moreover, what cross-linked the surface may be used. Conventionally known water-absorbing polymers and commercially available products can also be used.
As the water-absorbing polymer, a crosslinked poly (meth) acrylic acid, a crosslinked poly (meth) acrylate, a crosslinked poly (meth) acrylate having a polyoxyalkylene group, a poly N-vinylcarboxylic acid amide-based crosslinked Examples include a crosslinked body, a polyvinyl alcohol-based crosslinked body, and a crosslinked poly (meth) acrylamide. These may be used alone or in combination of two or more.

The molding aid, in combination with moisture, improves the strength of the water film, strengthens the aggregation between the composition material particles of the exothermic composition such as iron powder, improves the strength of the exothermic composition molded body, There is no limitation as long as the retention can be enhanced, but there are water-soluble polymers, hydrophilic polymers, inorganic compounds and the like. Cellulose-based, starch-based, poly (meth) acrylic acid (salt, ester) -based, syrup-based, seaweed, plant mucilage, microbial mucilage, protein-based, polysaccharide-based, organic-based, inorganic-based, synthetic system, etc. Examples of the polymer molding aids are as follows. For example, cellulose derivative-based molding aids such as carboxymethylcellulose (CMC), sodium carboxymethylcellulose, ethyl acetate, and hydroxymethylcellulose; starch-based water absorbents such as dextrin, pregelatinized starch, and starch for processing; polyacrylics such as sodium polyacrylate Syrups such as acid salt, corn syrup, and mannit syrup; seaweed extracts such as carrageenan and agar;
Plant resin mucous substances such as gum arabic, tolanto gum, karaya gum, etc .; Bacteria produced by microorganisms such as xanthan gum, julan gum, bull run, guard run; animal proteins such as gelatin, albumin, casein; plant proteins such as soy protein, wheat protein; Polysaccharide thickeners such as plant fruit mucilage such as pinogalactin; plant seed mucilage such as guar gum, locust pea gum, tamarind seed gum, tara gum; alginates such as sodium alginate,
Organic systems such as gum arabic, gum tragacanth, guar gum, gum arabic, pectin, corn starch, etc .; inorganic systems such as bentonite, montmorillonite, kaolin, sodium silicate, aluminum silicate; stearates, polyethylene oxide, polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl acetate Emulsion, acrylic sulfonic acid polymer, poly-N-vinylacetamide, or maleic anhydride copolymer such as methylcellulose, hydroxypropylmethylcellulose, hydroxypropylcellulose, carmellose sodium, carboxyvinyl polymer, ethylene-maleic anhydride copolymer Polymer, acrylic acid-starch copolymer, microcrystalline cellulose, N-vinylacetamide copolymer, etc. alone or in combination of two or more It is mentioned as examples. Conventionally known water-soluble polymers and thickeners can also be used.

  The content of the molding aid is not limited as long as the heat generation performance is not significantly reduced, but is preferably 0.001 to 2 parts by weight with respect to 100 parts by weight of the iron powder.

The functional substance may be any substance as long as it has some function such as medicinal effect and aroma. Perfumes, herbs, herbs, Chinese herbal medicines such as Kakkonto, oils such as safflower oil, dried plant products such as mugwort and loquat leaves and mogusa, transdermal drugs, pharmaceutically active substances, fragrances, lotions,
Examples include emulsions, poultices, fungicides, antibacterial agents, bactericides, deodorants or deodorizers, magnetic bodies, and the like. Specific examples include catechins, acidic mucopolysaccharides, chamomiles, horse chestnuts, vitamin E, nicotinic acid derivatives, alkaloid compounds, and other blood circulation promoters; horse chestnuts, flavone derivatives, anthocyanidins, vitamin P, chickenpox, silanols , Terminaria, mayus, etc .; aminophylline, tea extract, caffeine, xanthene derivative, inosit, dextran sulfate derivative, horse chestnut, escin, anthocyanidin, organic iodine compound, hypericum grass, cedar, mannenrou, ginseng, hyanore Slimming agents such as uronidase; analgesics such as indomethacin, dl-camphor, ketoprofen, shoga extract, red pepper extract, methyl salicylate, glycol salicylate; lavender, rosema Chromatography, citron, Jenipa, peppermint, eucalyptus, Rozuuddo, perfumes orange and the like; moisturizing agents such hyaluronic acid and glycerol and the like, may be used one or more kinds.

The percutaneously absorbable drug is not particularly limited as long as it is percutaneously absorbable. For example, a skin irritant, an analgesic anti-inflammatory agent such as salicylic acid or indomethacin, a central nervous agent (
Sleep sedatives, antiepileptics, neuropsychiatric agents), diuretics, antihypertensives, lotus vasodilators, antitussives, antihistamines, arrhythmic agents, cardiotonic agents, corticosteroids, local anesthetics, etc. It is done. These drugs are used alone or in combination of two or more as required.

The packaging material constituting the heating element of the present invention is not limited as long as it functions as a packaging material for the heating element. The packaging material may have a single-layer structure or a multilayer structure (such as a laminate), and the structure is not limited.
Moisture-permeable packaging material, non-breathable packaging material, breathable packaging material, non-breathable packaging material, water-absorbing packaging material, non-water-absorbing packaging material,
Examples include stretchable packaging materials, stretchable packaging materials, foamed packaging materials such as polyurethane foam and polystyrene foam, heat-sealable packaging materials having a heat-sealing layer, and films, sheets, nonwoven fabrics, woven fabrics, and the like. The composite can be used in a desired form depending on the desired application. Examples thereof include films, nonwoven fabrics, woven fabrics, sheets and the like, or combinations thereof. Specific examples include polyolefins such as polyethylene and polypropylene, polyesters, polyamides, polyurethanes, polystyrenes, thermoplastic resins such as polyethylene-vinyl acetate copolymers, synthetic resins, papers, natural rubber, recycled rubber, synthetic rubber, Examples include films, sheets, non-woven fabrics, woven fabrics, foams, non-water-absorbing papers that have been non-water-absorbing treated with wax, oil, and the like, and composites thereof. .
Any packaging material disclosed or commercially available or used for known disposable warmers or heating elements can be appropriately selected and used.

The surface of the packaging material that contacts the skin of the packaging material of the present invention preferably has a good texture and is made of a flexible material.
As the packaging material constituting the surface, polyolefins such as polyethylene and polypropylene, polyesters, polyamides, polyurethanes, polystyrenes, polyethylene-vinyl acetate copolymers, synthetic resins such as polyethylene terephthalate; plant fibers such as cotton and hemp; wool, Examples include animal fibers such as silk; recycled fibers such as rayon and cupra; non-woven fabrics and fibers using semi-synthetic fibers such as acetate, textile materials such as Japanese paper, western paper, synthetic paper, cloth, woolen fabric, leather materials, etc. It is done. These can also be used alone or in combination. Further, after enclosing the exothermic composition molded body with the base material and the covering material, the second base material and the second covering material having a good texture may be further coated thereon.

  The base material is a packaging material for laminating the exothermic composition or the exothermic composition molded body, and the coating material is a packaging material that covers the exothermic composition or the exothermic composition molded body. unrelated. In the base material or the covering material, air permeability and non-air permeability can be arbitrarily selected. As the heating element of the present invention, at least a part of the heating element only needs to have air permeability. The breathability of the container constituting the heating element can be obtained by using a breathable packaging material on a part, one surface or both surfaces of the container.

The air permeability of the air-permeable region such as the heating element and the air-permeable packaging material of the present invention is a water vapor permeability according to the Lissy method (JIS K-7129A method), preferably 50 to 10,000 g / (m ² · day). by weight, more preferably from ^{100~5,000g / (m 2 · day)} , still more preferably ^{100~2,000g / (m 2 · day)} , more preferably 100~600g / ^{(m 2} · day).
If this moisture permeability is less than 50 g / (m ² · day), the amount of heat generation is reduced, and a sufficient heating effect cannot be obtained, so this is not preferred for normal heating element applications, while 10,000 g / (m Exceeding ² · day) is not preferable because the heat generation temperature becomes high and there may be a problem in safety. However, depending on the application, it is not limited to use at a moisture permeability exceeding 10,000 g / (m ² · day) or in some cases close to an open system.

The non-breathable packaging material is not limited as long as it is a non-breathable packaging material, but the moisture permeability is preferably 10 g / (m ² · day) or less, more preferably 0.1 to 10 g / (M ² · day).

In the heating element of the present invention, a heating element having a heating composition molded body obtained by molding an excess water heating composition is enclosed in a moisture-permeable outer bag manufactured from the non-breathable packaging material, and the heating element is In the case of producing a heating element with improved heat generation characteristics by removing excess water without generating heat and enclosing in a bag, the moisture permeability of the moisture-permeable outer bag is determined by the Lissy method (JIS K-7129A method). in the moisture permeability by, and at 10g ^/ (m 2 · day) or less, preferably ^{0.1~10g / (m 2 · day)} , more preferably at 0.1~6g ^/ (m 2 · day) Yes, more preferably from 0.1 to 5 g / (m ² · day), and even more preferably from 0.1 to 4 g / (m ² · day).

The breathable packaging material is not limited as long as it has breathability.
For example, perforated films, non-woven fabrics, woven fabrics (woven fabrics), papers, etc., which are made of a non-breathable film such as a porous film or a polyethylene film by providing fine holes by perforation of needles, etc., and laminates containing them Body, non-breathable packaging material with polyethylene film laminated to non-breathable wrapping material with fine holes using needles etc. to give breathability, non-woven fabric with laminated fibers and thermocompression-bonded to control breathability Examples thereof include a film or sheet such as a porous film or a laminate in which a nonwoven fabric is laminated on a porous film via a breathable pressure-sensitive adhesive layer or a breathable adhesive layer. Although only one layer of the air-permeable packaging material may be used, the use of a plurality of layers can provide effects such as concealing the color of the heating element and preventing surface precipitation of the fallen powder.

  The porous film is not limited, but is a polyolefin resin such as polyethylene, linear low-density polyethylene or polypropylene, a fluorine resin such as polytetrafluoroethylene, and an inorganic material such as calcium sulfate, barium sulfate, or titanium oxide. It can be appropriately selected from a porous film or the like in which a mixed sheet with a filler is subjected to interfacial peeling by stretching to provide micropores.

Examples of the nonwoven fabric include, but are not limited to, thermoplastic resins such as rayon, nylon (polyamide), polyester, acrylic, polypropylene, vinylon, polyethylene, polyurethane, and cupra, cotton, cellulose, synthetic pulp, wood pulp, non-wood pulp, Examples include semi-synthetic fibers such as rayon and acetate, dry nonwoven fabrics, wet nonwoven fabrics, spunbonds and spunlaces formed from vinylon fibers and polyester fibers.
The nonwoven fabric which consists of composite fiber of a core sheath structure may be sufficient. The nonwoven fabric on the surface in contact with the skin is preferably a brushed (fluffed) nonwoven fabric. Moreover, a stretchable nonwoven fabric and a non-stretchable nonwoven fabric can also be used.

The non-breathable packaging material is not limited as long as it is non-breathable. Polyethylene, polypropylene, nylon, vinyl chloride, vinylidene chloride, acrylic, polyester, polyvinyl alcohol, ethylene-vinyl acetate copolymer and other films, sheets, coatings and laminates thereof, and metals such as aluminum Examples thereof include a laminate of metal (including semiconductor) compounds such as silicon oxide and a composite packaging material using them. Examples of the metal compound including a semiconductor include oxides such as silicon oxide, aluminum oxide, silicon oxynitride, and silicon nitride, nitrides, and oxynitrides.

The paper is not particularly limited as long as it is water-absorbing paper.
Tissue paper, crepe paper, thin paper such as craft, liner paper, corrugated core,
Examples thereof include thick paper such as a coat pole, or one or more of these laminates. It can be used if it is not in direct contact with the hydrous exothermic composition.

  Examples of the stretchable packaging material include films, sheets, nonwoven fabrics, woven fabrics, or laminates thereof that extend 1.005 times or more of the original length without being damaged when a tensile force is applied. It does not matter whether this tensile force is removed or not. Extensibility also includes stretchability. Natural rubber, synthetic rubber, elastomers, stretchable shape memory polymers and other single products, blends of these with non-stretch materials, mixed fabrics and woven fabrics (woven fabrics) composed of combinations of these, films, spandex yarns, Yarn, string, flat cloth, strand, ribbon, tape, slit film, scrim structure elastic body, foam, non-woven fabric, or composite of these together or non-extensible or non-stretchable materials An elastic material etc. are mentioned as an example. Moreover, the packaging material which provided the alternate cut | notch is also mentioned as an example of an elastic packaging material.

In addition, materials such as stretchable packaging materials and stretchable packaging materials are described as materials constituting the band of Japanese Patent Application Laid-Open No. 2002-54012, and are incorporated herein by reference to the same gazette.

  The heat seal material constituting the heat seal layer may be a single material or a composite material having a heat seal layer, and is not limited as long as at least a part thereof can be joined by heating. The said thermoplastic resin etc. are mentioned as an example.

The fixing means of the present invention is not limited as long as it has a fixing capability capable of fixing the heating element to a required portion. Furthermore, the fixing means is preferably removable. Adhesive layers, key hooks, hook buttons, hook-and-loop fasteners such as Velcro (registered trademark), magnets, bands, strings, ear hooks, and combinations thereof, which are generally employed as the fixing means, are arbitrarily selected. Can be used for
In the case of a band, the adjustment fixing means may be further configured 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, and the like of the fixing means, and it may be determined 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 notch such as a back split to facilitate its peeling.
The fixing means of the present invention can be used by appropriately selecting a fixing means (including removable attachment means) that has been disclosed in the prior art, is commercially available, or is used for known disposable warmers and heating elements. .

The pressure-sensitive adhesive layer is composed of a pressure-sensitive adhesive. The pressure-sensitive adhesive is not limited as long as the heating element can be fixed, and those conventionally used for disposable warmers, chemical warmers, heating elements, poultices, and the like, or technically disclosed ones can be used.
The pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer is not particularly limited as long as it has an adhesive force necessary for adhering to the skin and clothes, and is solvent-based, aqueous-based, emulsion-type, hot-melt-type, reaction-type. Various forms such as a pressure-sensitive system or a non-hydrophilic pressure-sensitive adhesive, a mixed pressure-sensitive adhesive, a hydrophilic pressure-sensitive adhesive (gel, etc.) are used.
Moreover, as an adhesive layer, even if it has air permeability, it may not have air permeability. What is necessary is just to select suitably according to a use. Examples of the breathable pressure-sensitive adhesive layer having air permeability include a pressure-sensitive adhesive layer in which the pressure-sensitive adhesive is partially present and the whole region is breathable, for example, a mesh-shaped pressure-sensitive adhesive layer or a stripe-shaped pressure-sensitive adhesive layer.
The pressure-sensitive adhesive may be laminated as it is on the breathable base material and / or the covering material, or the pressure-sensitive adhesive laminated on the separator may be attached to the base material and / or the covering material.

  The pressure-sensitive adhesive constituting the non-hydrophilic pressure-sensitive adhesive layer of the present invention is not limited as long as it is a pressure-sensitive adhesive, but is acrylic, urethane-based, rubber-based, silicon-based, polyisoprene-based, polyisobutene-based, styrene-containing system. Each pressure sensitive adhesive can be used. In particular, an acrylic or styrene-containing hot-melt pressure-sensitive adhesive that can be hot-melt processed is preferably used.

   The hot melt pressure-sensitive adhesive of the present invention is not limited, but a rubber-based pressure-sensitive adhesive mainly composed of ABA type or AB block copolymer (A is a thermoplastic block B is a rubber block) is preferable, and styrene-isoprene- Styrene copolymer (SIS), styrene-butadiene-styrene copolymer (SBS), styrene-ethylene-butadiene-styrene copolymer, styrene-butadiene copolymer, or their hydrogenated types (SEBS, SIPS, etc.) Examples include styrene-based elastomers, acrylic elastomers that contain alkyl esters such as acrylic acid and mecacrylic acid, olefin-based elastomers such as polyethylene, ultra-low density polyethylene, polypropylene, and ethylene / vinyl acetate copolymers, and urene-based elastomers. Can be mentioned. These may be used alone or in combination of two or more.

  The permanent adhesive of the present invention is not limited, but is an epoxy adhesive, isocyanate adhesive, acrylate adhesive, silicone adhesive, etc., reactive curable adhesive, thermosetting adhesive, photocurable adhesive Examples thereof include an agent (eg, an ultraviolet curable adhesive) and an anaerobic curable adhesive.

  The hydrophilic pressure-sensitive adhesive constituting the hydrophilic pressure-sensitive adhesive layer is not particularly limited as long as it has adhesiveness with a hydrophilic polymer or a water-soluble polymer as a main component and is hydrophilic as the pressure-sensitive adhesive. Specifically, hydrophilic polymers such as polyacrylic acid, water-soluble polymers such as sodium polyacrylate and polyvinylpyrrolidone, and the like are listed as examples.

  In the present invention, known adhesives such as permanent adhesives, pressure sensitive adhesives (pressure sensitive adhesives), hot melt pressure sensitive adhesives, and hydrophilic pressure sensitive adhesives can be used.

  At least a part of the exposed portion of the heating element and the pressure-sensitive adhesive layer is a water retention agent, a water-absorbing polymer, a pH adjuster, a surfactant, an organosilicon compound, a hydrophobic polymer compound, a pyroelectric material, an antioxidant, a bone You may contain at least 1 sort (s) chosen from the additional component which consists of a material, a fibrous material, a moisturizer, a functional substance, or these mixtures.

  As an example of the adhesive layer of the present invention, a layer made of an adhesive such as an acrylate type or a silicone type may be mentioned, but it may be air permeable or non air permeable. What is necessary is just to select suitably according to a use. Examples of the breathable adhesive layer having air permeability include an adhesive layer in which a pressure-sensitive adhesive is partially present and the entire region is breathable, for example, a mesh-like adhesive layer or a stripe-like adhesive layer.

There is no restriction | limiting about the pattern, shape, installation method, and installation position of the said adhesive layer, an adhesive bond layer, and an outer temporary attachment layer. Various patterns such as single points, nets (mesh), stripes, grids, dots, bands, rods, polka dots, various shapes such as rectangles and circles, porous, etc. Examples of various states are given as an example.
As an installation method, an appropriate method such as a melt blow method, a curtain spray method, a gravure method, or a solution type coating method can be given as an example. Known forming methods can also be employed.

The heating element of the present invention is preferably stored in an outer bag until it is used.
The packaging material constituting the outer bag of the present invention includes a non-breathable material (having a property of blocking air), for example, a film made of a resin such as vinyl alcohol or nylon; a laminate of the film and aluminum foil A film material in which silica (silicon oxide), aluminum oxide or the like is vapor-deposited on the surface of the film can be used.

In measuring the loop stiffness of the sample,
1) Marking may be performed with a magic pen, a felt pen, or the like on a loop forming portion having a loop length of 50 mm.
2) When the fixing means such as the adhesive layer is provided, the loop stiffness is measured with the fixing means inside, except for the separator.
3) When the length of the sample is short, it may be measured by adding a fixing film or the like to the sample. For example, measurement may be performed by adding a fixing film or the like to a sample having a loop length of 50 mm.
4) If the flexible heating element or the storage body has local ventilation material, texture material, temperature buffer material, etc., remove them and cut out the sample. However, when they are fixed to the flexible heating element or the storage body and the flexible heating element or the storage body breaks when they are removed, samples are prepared except for them as much as possible. This also applies to samples for measuring maximum tensile strength and elongation at break.

  The apparatus for measuring the loop stiffness is not limited as long as the loop stiffness can be measured, but examples include a loop stiffness tester manufactured by Toyo Seiki Co., Ltd., a loop stiffness tester manufactured by Tester Sangyo Co., Ltd., and the like.

The bending resistance in the present invention refers to rigidity (cone, stiffness) or flexibility, and conforms to the JIS L 1096A method (45 ° cantilever method) except that the segmented heating element itself is used as a sample. It is a thing. That is, one side of the segmented heating element is placed on the scale base line on a smooth horizontal surface having a slope of 45 ° (degrees) at one end. Next, the segment heating element is slid gently in the direction of the slope, and when the central point of one end of the segment heating element contacts the slope, the position of the other end is read by the scale. The bending resistance is indicated by the length (mm) that the segmented heating element has moved. Each of the five segmented heating elements is measured and an average value is obtained.
However, on the horizontal table, the heat generating part containing the exothermic composition molded body (heat generating composition) has a moving direction distance of 5 mm or more and a distance in the direction perpendicular to the moving direction of 20 mm or more remains. The length of the placed heating element crosses the area where the exothermic composition molded body (exothermic composition) exists or the area where the exothermic composition molded body (exothermic composition) exists. It is crossing the non-existing area linearly.
1) Method for measuring and calculating the bending resistance of a segmented heating element having an adhesive layer (1) The surface of the segmented heating element that does not have an adhesive layer is placed on a horizontal table and measured.
(2) When the side having the pressure-sensitive adhesive layer of the segmented heating element corresponds to the side of the horizontal base, a separator is attached to the pressure-sensitive adhesive layer, and the surface on the side of the pressure-sensitive adhesive layer with the separator is placed on the horizontal base and measured.
(3) The separator covering the adhesive layer of the section heating element with the adhesive layer is a plastic film having a bending resistance of 30 mm or less, or a plastic film having a thickness of 50 μm or less, preferably 25 μm or less, or lightly rubbed. Use a soft, soft film such as a plastic film that can be wrinkled. Examples include wrap films such as polyethylene film, vinylidene chloride film, and vinyl chloride film.
2) Measurement calculation method of minimum bending resistance Each piece of heating element is placed on a horizontal table, and the vertical and horizontal directions, or one direction and the direction perpendicular thereto, The bending resistance in each direction is calculated as an average value. The other surface is placed on a horizontal table and measured in the same manner to obtain each bending resistance. The smallest value of the bending resistance is set as the minimum bending resistance.

The surplus water value of the present invention is defined by the following surplus water value defining method.
Under the environment of 20 ° C., “2 types” of JIS P3801, in which 8 reference lines are written at 45 ° intervals radially from the center point using the exothermic composition which is a sample adjusted in the environment. (No. 2) filter paper is used. Here, JIS P3801 “2 types” (No. 2) filter paper, in which eight reference lines are written at 45 ° intervals radially from the center point, is placed on a support plate (stainless steel plate, etc.) At the center of the filter paper is placed a measuring plate with a cylindrical through hole with an inner diameter of 29 mm x height of 20 mm and a length of 150 mm and a maximum width of 100 mm, a heat generating composition is placed near the cylindrical through hole, and a packed plate Is moved along the measuring plate, filled with the exothermic composition, and further, the non-absorbent plastic film (70 μm thickness) so as to cover the cylindrical through-hole so that the exothermic composition does not cause an exothermic reaction during the measurement. ), And a pressure plate (thickness 5 mm x length 150 mm x maximum width 150 mm, etc.) is placed on it, and after holding for 5 minutes, the filter paper is taken out and written radially. Standards Along the line, as the permeation distance of water or aqueous solution, the distance from the diameter circle (circumferential surface) of the cylindrical through hole of the measurement plate to the permeation tip is read in mm units, and each of the eight permeation distances (m1, m2, m3, m4, m5, m6, m7, m8) is arithmetically averaged (mm) divided by the height (mm) of the cylindrical through hole, and further multiplied by 100. Surplus water value. As the surplus water value of the sample, it is preferable to measure three points for the same sample, average the three surplus water values, and use the average value as the surplus water value of the sample.

The JIS P3801 “Type 2” filter paper of the present invention also includes a filter medium corresponding to the JIS P3801 “Type 2” filter paper.
The filter paper corresponding to the “2 types” filter paper of JIS P3801 is 1) a filter medium having a drainage time (s) of 120 or less, 2) “1 type” and “5 types A” filter papers of JIS P3801, 3) A filter paper having a retained particle diameter of 5 μm and a drainage time of 80 seconds / 100 ml, 4) A filter medium having a retained particle diameter of 4 to 6 μm and a drainage time of 70 to 90 seconds / 100 ml, 5) Filter paper No. made by Nakamura Science Co., Ltd. 2, 6) Toyo Filter Paper Co., Ltd. filter paper No. 2, 7) Whatman filter paper grade 2 etc. are mentioned as an example.

The volume of the exothermic composition in the heating element or the storage part of the exothermic part of the present invention is calculated by the following exothermic composition volume measuring method.
All the exothermic compositions or exothermic composition molded bodies in the exothermic body or the storage section of the exothermic part are gathered together and used as a measurement sample.
A transparent plastic cylinder with a single mouth, a flat bottom, an inner diameter of 10 to 50 mm and an inner height of 50 to 200 mm (a metal cylinder or a wooden cylinder can be used if the volume can be increased), etc. Using an arbitrary cylindrical container capable of measuring the volume of the exothermic composition, a flat plate having a thickness of 5 mm or more, and a plus film, the exothermic composition of the storage portion is placed in the cylindrical container, and the mouth of the cylinder Is covered with the plastic film and sealed, and the space between the bottom of the cylindrical container and the flat plate is kept at 5 cm, and the cylindrical container is dropped onto the surface of the flat plate. After dropping three times, the height of the exothermic composition is measured, and from the bottom area of the cylindrical container, the volume of the exothermic composition is calculated in cm ³ units, divided by the number of the storage units, and one storage The volume of the exothermic composition in the part. Further, the exothermic composition is not limited as long as it is a exothermic composition or a exothermic composition in the housing part of the exothermic part, and includes exothermic composition molded bodies and the like. The measurement is preferably performed in an atmosphere where the exothermic composition does not generate heat, such as in a nitrogen atmosphere.

The method for measuring the volume of the storage unit of the present invention is not limited as long as the volume of the storage unit can be measured,
1) Put a notch at the end of the storage part with a cutter etc., excluding the exothermic composition inside,
Measure the folding diameter of the storage unit, calculate the bottom area, calculate the volume of the storage unit in cm ³ from the length of the storage unit, and further calculate the volume of each storage unit,
2) Put a notch in the outermost part of the storage part with a canter, etc., remove the exothermic composition inside, inject water with a syringe, etc., and the volume of the storage part from the injection volume in cm ³ units For example, the calculation and the volume of each storage unit are calculated.
As the average volume of the storage unit, all the calculated volumes of the storage unit are calculated, divided by the number of the storage units, and the average volume of one storage unit is calculated.

EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example etc., this invention is not limited by these.

As exothermic composition, reduced iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 300 μm or less) 5.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) An exothermic composition in which 0.8 part by weight, 0.2 part by weight of slaked lime, 0.7 part by weight of sodium sulfite, and 11% saline was mixed was used.
A laminated packaging material in which a non-breathable packaging material made of polyethylene film and a nylon non-woven fabric as a base material are laminated via an adhesive layer provided with a SIS hot melt adhesive in a melt blow system, and a porous polyethylene material as a coating material A breathable packaging material in which a film and a nylon non-woven fabric were laminated via an adhesive layer in which a SIS hot melt pressure-sensitive adhesive was provided by a melt blow method was used. The air permeability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
The covering material and the base material were combined, the peripheral part was sealed, and a bag-shaped storage body was produced.
The storage body had a rectangular storage section and was provided in parallel at five intervals of 12 mm. Each storage part had a maximum folding diameter of 20 mm × length of 120 mm, and the tensile strength in the longitudinal direction of the packaging material constituting each storage part was 10 to 15 N / 5 mm.
The exothermic composition was accommodated in a thickness of 5 mm in each accommodating portion and sealed to produce a plurality of segmented heating elements.
A double-sided tape was provided on the non-breathable surface of the segmented heating element and fixed to clothes to conduct a heat generation test.
After the test, the exothermic composition in each storage unit was not biased, the shape of the segmented heating element was not deformed, and the feeling during use was good.

As exothermic composition, reduced iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 300 μm or less) 5.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) An exothermic composition in which 0.8 part by weight, 0.2 part by weight of slaked lime, 0.7 part by weight of sodium sulfite, and 11% saline was mixed was used.
A laminated packaging material in which a non-breathable packaging material made of polyethylene film and a nylon non-woven fabric as a base material are laminated via an adhesive layer provided with a SIS hot melt adhesive in a melt blow system, and a porous polyethylene material as a coating material A breathable packaging material in which a film and a nylon non-woven fabric were laminated via an adhesive layer in which a SIS hot melt pressure-sensitive adhesive was provided by a melt blow method was used. The air permeability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
The covering material and the base material were combined, the peripheral part was sealed, and the bag-shaped storage body 1 was produced.
The storage body 1 had a rectangular storage portion and was provided in parallel at five intervals of 12 mm. Each storage section has a maximum fold diameter of 20 mm × length of 120 mm, and the fold diameter strength of each storage section of the segmented heating element was 0.5 to 0.6. A plurality of sectioned heating elements were produced by storing and enclosing with a thickness of 5 mm.
A double-sided tape was provided on the non-breathable surface of the segmented heating element and fixed to clothes to conduct a heat generation test.
After the test, the exothermic composition in each storage unit was not biased, the shape of the segmented heating element was not deformed, and the feeling during use was good.
[Comparative Example 1]

Using the same exothermic composition, coating material and substrate as in Example 2,
The covering material and the base material were combined, the peripheral part was sealed, and a bag-shaped storage body was produced. The storage part had a maximum folding diameter of 100 mm and a length of 120 mm. The fold diameter strength of the housing portion of the heating element was 0.08 to 0.1. The heating composition was housed and enclosed in the housing body in a thickness of 5 mm to produce a heating body.
A double-sided tape was provided on the non-breathable surface of the heating element and fixed to clothes to conduct a heat generation test.
After the test, the exothermic composition was biased to one side of the heating element, and a part of the heating element was swollen, and the feeling of use was poor during use.
[Comparative Example 2]

The same exothermic composition as in Example 2 was used, and a polyethylene film non-breathable packaging material was used as a base material, and a polyethylene porous film was used as a coating material. The air permeability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
The covering material and the base material were combined, the peripheral part was sealed, and a bag-shaped storage body was produced.
The storage body had a rectangular storage section and was provided in parallel at five intervals of 12 mm. Each storage section has a maximum fold diameter of 20 mm × length of 120 mm, and the fold diameter strength of each storage section of the heating element was 0.09 to 0.1. The heating element was fabricated by enclosing and enclosing it in thickness.
A double-sided tape was provided on the non-breathable surface of the heating element and fixed to clothes to conduct a heat generation test.
After the test, the exothermic composition was biased to one side of the heating element, and a part of the heating element was swollen, and the feeling of use was poor during use.

As exothermic composition, reduced iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 300 μm or less) 5.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) An excess water exothermic composition having an excess water value of 10 in which 0.8 part by weight, 0.2 part by weight of slaked lime, 0.7 part by weight of sodium sulfite and 11% saline were mixed was used.
A non-breathable packaging material made of polyethylene film provided with a 30 μm thick acrylic adhesive layer with a separator as a base material, and a porous porous film made of polyethylene and a non-woven fabric made of nylon as a covering material with a SIS hot melt adhesive. A breathable packaging material laminated through an adhesive layer provided by a melt blow method was used. The breathability of the breathable laminated packaging material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a mold in which five through holes each having a width of 5 mm and a length of 80 mm are provided at intervals of 12 mm, the exothermic composition molded body obtained by molding the surplus water exothermic composition by mold-through molding is formed on the polyethylene film side of the substrate. Laminated.
The base material was coated with the coating material, and the peripheral portion of the exothermic composition molded body was heat-sealed to obtain a plurality of sectioned heating elements having five sectioned heating sections with a maximum width of 9 mm.
The ratio of the height of the exothermic composition (the exothermic composition molded body or the like) to be stored to the height of the storage portion of each of the divided heat generating portions at the center or near the center of each of the divided heat generating portions is 1.0. Met. The maximum folding diameter of the heating element storage portion was 15 mm, and the folding strength was 0.6 (N / 5 mm) / mm.
The sectioned heating element was sealed in an outer bag which is a non-breathable storage bag and left at room temperature for 72 hours. After 72 hours, remove from the outer bag and perform a heat test. After the test, the heat generating composition in each storage part is not biased, and the shape of the segmented heating element is not deformed. The curved surface fit and usability were evaluated, but all were excellent.

  A plurality of separable heating elements each having a cut (perforation) for separation in each section of the section heating element produced in Example 2 were produced. A small heating element separated from each section was optimal for heating a small area of the body (area corresponding to acupoints).

As exothermic composition, reduced iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 300 μm or less) 4.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) An excess water exothermic composition having an excess water value of 7 in which 0.7 parts by weight, 0.2 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed was used.
A non-breathable sheet of wrapping nonwoven fabric on one side of the polyethylene film and an ethylene-vinyl acetate copolymer film on the other side is used as the base material, and a polyethylene porous film and nylon are used as the wrapping material for the covering material. An air-permeable laminated packaging material was used in which a non-woven fabric was laminated through an adhesive layer in which a SIS hot melt pressure-sensitive adhesive was provided by a melt blow method. The breathability of the breathable laminated packaging material was 300 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Use a mold with three through-holes with a width of 6 mm and a length of 80 mm provided at 12 mm intervals, with a spacing of 24 mm and again with three through-holes with a width of 6 mm and length of 80 mm at 12 mm intervals. In the molding, the exothermic composition molded body obtained by molding the surplus water exothermic composition was laminated on the polyethylene film side of the substrate. Next, it was covered with the covering material, the peripheral part of the exothermic composition molded body was sealed, and a plurality of eye mask-shaped segmented heating elements having six segmented heating units with a width of 10 mm were prepared. Furthermore, a texture material comprising a three-layer laminate of a spunbond nonwoven fabric (strength) / melt blown nonwoven fabric (breathable) / thermal bond nonwoven fabric (texture) that is soft on both sides and has a moisture permeability exceeding 5000 g / (m ² · day), With the breathable side as the eye side, both ends of the ear hook made of a non-woven fabric that can be cut off at the center are attached to both ends in the longitudinal direction of the eye mask-shaped section heating element by heat sealing, A plurality of eye mask-shaped eye temperature heating elements having ear hooks, which are separate heating elements, were prepared. The fold diameter strength of the storage part constituting the section heating part of the eye temperature heating element was 0.5 to 10 (N / 5 mm) / mm.
Next, it was enclosed and stored in a non-breathable storage bag (outer bag) and left at room temperature for 7 days.
After 7 days, the eye mask-shaped eye heating element was taken out of the outer bag, the breathable surface was turned to the eyes, and it was fixed to the face with the ear hook so as to cover the eyes. It became warm and warm and warm for more than 10 minutes. The eye mask-shaped eye temperature heating element had excellent heat generation, excellent flexibility, and curved surface fit, and was very convenient to use.

As exothermic composition, reduced iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 300 μm or less) 4.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) An excess water exothermic composition having an excess water value of 7 in which 0.7 parts by weight, 0.2 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed was used.
A non-breathable sheet of wrapping nonwoven fabric on one side of the polyethylene film and an ethylene-vinyl acetate copolymer film on the other side is used as the base material, and a polyethylene porous film and nylon are used as the wrapping material for the covering material. An air-permeable laminated packaging material was used in which a non-woven fabric was laminated through an adhesive layer in which a SIS hot melt pressure-sensitive adhesive was provided by a melt blow method. The breathability of the breathable laminated packaging material was 600 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Three through-holes with a width of 6 mm and a length of 80 mm are provided at intervals of 12 mm, and a mold with a through-hole with a width of 6 mm and a length of 80 mm is again provided at intervals of 24 mm. The exothermic composition molded body obtained by molding the surplus water exothermic composition was laminated on the polyethylene film side of the substrate. Next, a plurality of eye mask-shaped eye temperature heating elements which are coated with the covering material, sealed around the exothermic composition molded body, and have six segment heating elements having a width of 10 mm are prepared. did.
In addition, an eye mask shape having ear hooks by attaching both ends of an ear hook made of a non-woven fabric that can be cut off to the center at both ends in the longitudinal direction of the eye temperature heating element via an adhesive. Several eye temperature heating elements were made. The folding strength of the storage part constituting the section heating part of the eye temperature heating element was 0.5 to 8 (N / 5 mm) / mm.
A local ventilation material comprising a two-layer laminate of an air-through nonwoven fabric (texture) / polyethylene porous film in which three 2 mmφ perforations are provided at equal intervals on the entire ventilation surface of the eye mask-shaped eye temperature heating element. The three perforations are placed so that the three perforations are arranged in each section, and are fixed to the peripheral portion of the eye temperature heating element through an adhesive layer (fixing portion) made of an adhesive, and the eye side which is the base material side An eye temperature heating element provided with a texture material composed of a three-layer laminate of spunbond nonwoven fabric (strength) / melt blown nonwoven fabric (ventilation) / thermal bond nonwoven fabric (texture) with a moisture permeability exceeding 5000 g / (m ² · day) Several were produced. Next, it was enclosed and stored in a non-breathable storage bag (outer bag) and left at room temperature for 7 days.
After 7 days, the eye mask-shaped eye heating element was taken out of the outer bag, the eye side was turned to the eyes, and it was fixed to the face with the ear hook so as to cover the eyes. The warm and optimal temperature lasted for more than 10 minutes. The eye mask-shaped eye temperature heating element had excellent heat generation, excellent flexibility, and curved surface fit, and was very convenient to use.

    In the present invention, since a heat generating portion consisting of a storage portion without uneven movement of the heat generating composition can be incorporated even if the heat generating composition is cured by absorption of oxygen, the large heat generating device, the medium heat generating device, and the small heat generating device can be incorporated. Various types and multiple sizes of heating elements such as a body and a local heating heating element (eye heating element, knee heating element, etc.) can be provided in various fields including medical treatment.

1 Storage body
2 Conventional heating element housing
3 storage
4 Conventional storage
5 Sectional space of the storage
6 Sectional space section of conventional storage section
7 Seal part
8 Maximum folding diameter of storage
9 Maximum folding diameter of conventional storage
10 division heating element
10A single heating element
11 Single heating part
12 division heat generating part
13 Division
14 Base material
15 Coating material
16 Exothermic composition molded body, Exothermic composition
17 Ear hook with hole
18 Fixed part
19 Textured material
20 holes
21 notches (perforations)
22 Alternate cuts
23 Adhesive layer
24 Breathable adhesive layer
25 Separator
26 V-notch, V-shaped notch,
27 Airway
28 Maximum width

a Side length b Side length c Side length
d Side length

Claims (3)

A heating element having a heating part in which a heating composition containing a heating composition molded body is stored in a storage part,
Having at least one heating part,
The maximum width of the storage portion is 3 to 25 mm,
The maximum folding diameter of the storage portion is 3 to 35 mm;
A heating element characterized in that a longitudinal tensile strength of a packaging material constituting the storage part of the heating part is 1.0 to 40 N / 5 mm. A heating element having a heating part in which a heating composition containing a heating composition molded body is stored in a storage part,
Having at least one heating part,
The maximum width of the storage portion is 3 to 25 mm,
The maximum folding diameter of the storage portion is 3 to 35 mm;
2. The heating element according to claim 1, wherein a folding diameter strength of the storage part of the heating part is 0.2 to 20 (N / 5 mm) / mm. A heating element having a heating part in which a heating composition containing a heating composition molded body is stored in a storage part,
Having two or more divided heat generating portions that are the heat generating portions, and providing the divided heat generating portions with a separating portion that is a seal portion as an interval;
The maximum width of the storage portion is 3 to 25 mm,
The maximum folding diameter of the storage portion is 3 to 35 mm;
3. The heating element according to claim 1, wherein a folding diameter strength of the storage part of the heating part is 0.2 to 20 (N / 5 mm) / mm.

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