WO2015045185A1

WO2015045185A1 - Disposable body warmer

Info

Publication number: WO2015045185A1
Application number: PCT/JP2013/076627
Authority: WO
Inventors: 剛伊賀上
Original assignee: 小林製薬株式会社
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2015-04-02
Also published as: WO2015045189A1; CN105764456A; JPWO2015045189A1; CN105764456B

Abstract

Provided is a disposable body warmer with which the dispersion, from an outer package, of moisture included in a heat-generating composition is inhibited, and with which an excellent heat-generation duration can be maintained, even if kept in an unused state for an extended period of time. In this disposable body warmer (1), a heat-generating composition (2), which generates heat as a result of coming into contact with air, is enclosed in air-permeable inner packages (3), and the inner packages (3) are accommodated in an airtight outer package (4). The outer package (4) is provided with at least 3 accommodation portions (42) which are capable of accommodating the inner packages (3), and which are separated from each other. The inner packages (3) are each provided with at least 2 enclosure portions (32) which are capable of enclosing the heat-generating composition (2), and which are separated from each other. The inner packages (3), each of which being in a state of having been folded at least once such that at least one of the enclosure portions thereof is on top of another of the enclosure portions thereof, are accommodated in the accommodation portions (42).

Description

Disposable body warmer

The present invention relates to a disposable body warmer.

Conventionally, a disposable warmer in which a heat-generating composition that generates heat by contact with air is enclosed in a breathable flat bag (inner bag) has been known as a body warmer, and is portable and safe. It is frequently used because of its simplicity and low cost. When the disposable body warmer is not used, the inner bag is packaged in a flat bag (outer bag) having airtightness so that the exothermic composition does not come into contact with air. For example, as shown in FIG. 13, the outer bag 101 includes one storage portion 102, and the storage portion 102 stores one inner bag 103. As shown in FIG. 14, the outer bag 101 includes two outer bags 101. 2. Description of the Related Art A disposable body warmer 100 that is provided with partitioned storage units 102 and stores one compact sized inner bag 103 in each storage unit 102 is generally known.

JP-A-5-208031

Such disposable body warmers control the exothermic conditions (maximum temperature, average temperature, duration, etc.) by adjusting the components of the exothermic composition (for example, the amount of iron powder filling and the moisture blending ratio). Yes. When water, which is an essential component of the exothermic composition, has a small blending ratio, the duration of the disposable body warmer is shortened, and when too large, the disposable body warmer does not generate heat. However, even if the inner bag in which the heat generating composition is sealed is sealed in an airtight outer bag before use, if the unused state continues for a long period of time, such as the state of being placed in a storefront, FIG. 13 and FIG. When the inner bag is wrapped in the outer bag by such a method, sufficient heat generation performance cannot be obtained at the time of use. In particular, the duration (40 ° C. from when the disposable body warmer starts to generate heat and exceeds 40 ° C. It has been found by the present inventors that the time until the value falls below is greatly reduced. This decrease in duration is considered to be due to the evaporation of moisture contained in the exothermic composition from the outer bag. Therefore, in the past, the amount of exothermic composition was increased more than necessary by reducing the duration of heat generation, thereby ensuring that the desired heat generation duration was satisfied even after long-term storage. There is a problem that it takes. Therefore, it is necessary to wrap the inner bag in the outer bag so that moisture is not scattered from the outer bag as much as possible.

The present invention has been made paying attention to the above-described problem, and suppresses the moisture contained in the exothermic composition from scattering from the outer bag, so that the exothermic heat of the exothermic composition can be maintained even if the unused state continues for a long period of time. An object of the present invention is to provide a disposable body warmer capable of maintaining a good duration.

The object of the present invention is that a heat-generating composition containing moisture and generating heat upon contact with air is enclosed in an air-permeable inner bag, and the inner bag is accommodated in an air-tight outer bag. The outer bag is capable of storing the inner bag and includes at least three storage portions partitioned from each other, and the inner bag can enclose the exothermic composition. And at least two enclosure parts partitioned from each other, and a disposable body warmer accommodated in the accommodation part in a state where at least one of the enclosure parts is folded at least once so as to overlap with the other enclosure parts Achieved.

In a preferred embodiment of the heating tool having the above-described configuration, all the other enclosure parts are stacked in one enclosure part.

In a more preferred embodiment, the inner bag is formed by laminating a non-breathable sheet material on at least one surface, and the enclosing portion is overlapped so that the non-breathable sheet material becomes upper and lower outermost surfaces. It is characterized by being.

In a further preferred embodiment, the outer bag is formed so that at least three other storage parts are continuously provided in at least one storage part, or at least two of all the storage parts are provided. It is preferable that the outer bag is formed so that the other storage units are continuously provided.

In a further preferred embodiment, the number of the enclosing portions is 2 to 4.

According to the disposable body warmer of the present invention, the moisture contained in the exothermic composition can be prevented from scattering from the outer bag, so that the exothermic duration of the exothermic composition can be favorably maintained even if the unused state continues for a long period of time. .

It is a top view of the disposable body warmer concerning one embodiment of the present invention. It is sectional drawing of FIG. It is a top view of an inner bag. FIG. 4 is a cross-sectional view of FIG. 3. It is a top view which shows the modification of an inner bag. It is a top view which shows the modification of an outer bag. It is a top view which shows the modification of an outer bag. It is a top view which shows the modification of an outer bag. It is a top view which shows the modification of an outer bag. It is a top view which shows the modification of an outer bag. It is a top view which shows the modification of an outer bag. It is a graph which compares the decreasing rate of the duration of the disposable body warmer of this embodiment, and the disposable body warmer of a comparative example. It is a top view of the disposable warmer of a prior art example. It is a top view of the disposable warmer of a prior art example.

Hereinafter, embodiments of the disposable body warmer according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the disposable body warmer 1 according to the present embodiment includes a heat generating composition 2 that generates heat when in contact with air enclosed in a flat inner bag 3 having air permeability. Is housed in a flat outer bag 4 having airtightness, the inner bag 3 is taken out from the outer bag 4, and the heat generating composition 2 of the inner bag 3 is removed from the limbs, lower back, back, abdomen, and feet. Heat is applied to various parts of the body such as the back, shoulders, and buttocks.

The exothermic composition 2 only needs to generate heat upon contact with air. For example, an oxidizable metal, activated carbon, water retention agent (wood powder, vermiculite, diatomaceous earth, perlite, silica gel, alumina, water-absorbing resin, etc. ), Metal salts (such as sodium chloride), and water, each of which contains an appropriate content, and a known composition conventionally used for disposable warmers can be used. The oxidizable metal is a metal that generates heat of oxidation reaction, and examples thereof include one or more powders and fibers selected from iron, aluminum, zinc, manganese, magnesium, and calcium. Among these, iron powder is preferable from the viewpoints of handleability, safety, manufacturing cost, storage stability, and stability. Examples of the iron powder include one or more selected from reduced iron powder and atomized iron powder. The disposable body warmer 1 is controlled so as to have desired heat generation conditions (maximum temperature, average temperature, heat generation duration, etc.) during use by adjusting the components of the heat generating composition 2 described above. For example, the blending amount of the oxidizable metal in the exothermic composition 2 is preferably 30% to 80%, more preferably 40% to 70%, and further preferably 40% to 65%. In addition, since water, which is an essential component of the exothermic composition 2, has a reduced exothermic duration when the blending ratio is small, the blending ratio of water in the exothermic composition 2 is devised. Thus, the blending ratio of moisture contained in the exothermic composition 2 is an important factor for realizing a desired exothermic duration during use. Therefore, even when the disposable body warmer 1 is placed in the store for a long time, such as when it is not used for a long period of time, the heat generating composition 2 prevents the moisture contained in the heat generating composition 2 from scattering from the outer bag 4 as much as possible. In the disposable body warmer 1 of the present embodiment, the shape of the inner bag 3 and the outer bag 4 and the method for storing the inner bag 3 in the outer bag 4 in order to prevent the duration of heat generation from decreasing due to a decrease in the moisture mixing ratio Devised about.

As shown in FIGS. 3 and 4, the inner bag 3 is composed of two sheets of a first sheet material 30 and a second sheet material 31 that are rectangular on the front and back sides. A plurality of (two in the present embodiment) in which the exothermic composition 2 can be encapsulated by sealing (bonding) the side edges of one surface) using a known adhesive or by heat bonding (heat sealing). It is formed in a bag shape having a rectangular enclosing portion 32. The plurality of enclosing portions 32 are partitioned from each other by partitioning the adjacent enclosing portions 32 with the seals of both

sheet materials

30 and 31. As shown in FIG. 2, the enclosing portions 32 can be overlapped with each other by folding the inner bag 3 between the adjacent enclosing portions 32. Note that the number of the sealing portions 32 provided in the inner bag 3 is not limited to two, and may be three or more, but is preferably two to four. Further, the arrangement method of the plurality of encapsulating portions 32 is not particularly limited, and as shown in FIG. 3, the plurality of encapsulating portions 32 may be arranged in a line, For example, when the number of the enclosing portions 32 is four, the two upper and lower rows may be arranged so that two rows are aligned in each of the upper and lower rows. Also in this case, each enclosure part 32 can be mutually piled up by folding the inner bag 3 between the enclosure parts 32 adjacent on the upper and lower sides and / or right and left.

The first sheet material 30 has air permeability and comes into contact with the body when used. As long as it has air permeability, the first sheet material 30 may be a porous resin film, a resin film perforated with a needle, or a non-woven fabric or a woven fabric. Moreover, the 1st sheet | seat material 30 may be a single layer structure, and the multilayer structure which laminated | stacked the resin film and the nonwoven fabric may be sufficient as it. As the resin film, those conventionally used as the inner bag 3 of the disposable body warmer 1 can be used. For example, polyethylene, polypropylene, polyester, polyamide, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyurethane, polystyrene, ethylene -Vinyl acetate copolymer, polycarbonate, hydrochloric acid rubber and the like can be exemplified, and non-woven fabrics are also artificial fibers such as polypropylene, nylon, vinylon, polyester, polyethylene terephthalate, rayon, acetate, acrylic, polyethylene, polyvinyl chloride, etc. Examples include those containing natural fibers such as cotton, hemp and silk. Moreover, paper etc. can be illustrated other than a nonwoven fabric.

The second sheet material 31 may have either air permeability or non-air permeability, and may be a resin film, a non-woven fabric, or a woven fabric, like the first sheet material 30. A single layer configuration or a multilayer configuration may be used. When making the 2nd sheet material 31 air-impermeable, as shown in FIG. 4, the adhesion layer 33 can be provided in the surface. Specifically, it is possible to apply an adhesive made of acrylic resin, rubber resin, or the like having an adhesive action to the skin and clothes to the surface of the second sheet material 31, so that a so-called sticking type warmer and can do. The adhesive layer 33 is covered with the release paper 34 until the inner bag 3 is stored in the outer bag 4 and used. On the other hand, when the second sheet material 31 is made to be breathable and is a so-called non-stick type warmer that is used by holding it in the hand, the inner bag 3 is stored in the outer bag 4 until it is used. It is preferable that at least one surface of the first sheet material 31 and the second sheet material 32 is covered with a non-breathable sheet material.

In this embodiment, the inner bag 3 has two sealed portions 32 separated from each other by sealing the two

sheet materials

30 and 31 at the outer peripheral edge (side edges of the four directions) and the center position. Although formed so as to be provided integrally, for example, two compact sized inner bags each having one enclosing portion 32 are individually manufactured, and then the binding margins of the peripheral edges of the two inner bags are integrated by bonding. May be formed.

In the enclosing portion 32, the ratio of the enclosing volume of the exothermic composition 2 to the volume of the enclosing portion 32 is preferably about 30% to 80%, and particularly preferably about 50% to 70%. If this ratio exceeds 80%, the exothermic composition 2 becomes excessive, and when the inner bag 3 having a plurality of enclosing portions 32 is formed by sealing the two

sheet materials

30 and 31, heat is generated in the seal portion. This is because the composition 2 may bite and the inner bag 3 may not be formed. On the other hand, if this ratio is less than 30%, the desired heat generation condition may not be satisfied during use. Moreover, it is preferable that the area of the enclosure part 32 is 0.05 m < ² > or less. When the area of the enclosing portion 32 exceeds 0.05 m ² , the area of the storage portion 42 of the outer bag 4 that stores the inner bag 3 to be described later increases, so that the overall size of the outer bag 4 increases and is carried. This is because there is a possibility that problems such as being bulky and increasing the amount of use of the outer bag 4 (wrapping films 40 and 41) may lead to an increase in cost.

As shown in FIGS. 1 and 2, the outer bag 4 is composed of two front and back packaging

films

40 and 41, and the two

packaging films

40 and 41 are overlapped, and the outer peripheral edge is, for example, thermally bonded (heat sealed). Alternatively, by sealing (joining) using a known adhesive, at least three rectangular storage portions 42 capable of storing the inner bag 3 therein, and a first seal portion 43 sealing the outer bag 4 at the outer peripheral edge. Are each formed into a bag shape. Between the adjacent storage portions 42, the two sealing

films

40 and 41 are linearly sealed (joined) to form a second seal portion 44, and the adjacent storage portions 42 are the second seal portions 44. Are separated from each other. In addition, although how to arrange the at least three storage portions 42 of the outer bag 4 will be described later, it is not particularly limited.

As the

packaging films

40 and 41, those conventionally used as the outer bag 4 of the disposable body warmer 1 can be used, and examples thereof include non-porous films such as polyethylene, polypropylene, silica-deposited film, and vinylidene chloride coated film. Can do. Among these, vinylidene chloride coated films (KOP, K nylon, KPET, etc.) and aluminum vapor-deposited coated films (VMPET, VMCPP, etc.) are preferable from the viewpoint of impermeability of oxygen and water vapor and appropriate permeability of hydrogen.

The disposable body warmer 1 according to the present embodiment is configured so that the inner bag 3 is folded at least once so that at least one enclosing portion 32 of the inner bag 3 is overlapped with the other enclosing portion 32, and each storage portion of the outer bag 4 is stored. It is characterized in that it is housed in each of 42. That is, when the number of enclosure parts 32 provided in the inner bag 3 is two, for example, as shown in FIG. 2, the inner bag 3 is folded at the center position so that the one enclosure part 32 is replaced with the other enclosure part 32. In this state, one inner bag 3 is stored in each storage portion 42 of the outer bag 4. Thus, when the enclosure part 32 is stacked, the area of the inner bag 3 (total surface area of the plurality of enclosure parts 32) can be reduced by half, so that the exothermic composition 2 enclosed in each enclosure part 32 is The area touching the outside is reduced. Therefore, it is possible to make it difficult for the moisture in the exothermic composition 2 enclosed in each enclosure part 32 to scatter. Further, if the inner bag 3 is folded and stored, the area of the storage portion 42 of the outer bag 4 that stores the inner bag 3 can be made smaller than when the inner bag 3 is stored without being folded. 2 can also be prevented from passing through the front and back surfaces (wrapping films 40, 41) of the storage portion 42 and splashing to the outside of the storage portion 42. In addition, if the inner bag 3 is folded and stored, the amount of use of the outer bag 4 (wrapping films 40 and 41) can be reduced as compared with the case where the inner bag 3 is not folded and stored, which leads to cost reduction.

At this time, the inner bag 3 has the second sheet material 31 when the second sheet material 31 is air-impermeable and the first sheet material 31 and the second sheet material when the second sheet material 31 is air-permeable. It is preferable that a non-breathable sheet material (not shown) covering at least one surface of the sheet material 32 is folded so as to be upper and lower outermost surfaces. Thereby, since the uppermost surface of the stacked enclosure part 32 becomes air-impermeable, the moisture in the heat-generating composition 2 enclosed in each enclosure part 32 can be more effectively prevented from scattering.

When the number of enclosures 32 provided in the inner bag 3 is three, the inner bag 3 is folded once between the enclosure 32 at one end and the enclosure 32 at the center, and the two enclosures 32 are provided. The inner bag 3 may be stored one by one in each storage portion 42 of the outer bag 4 in a state where only the two are stacked, but the other sealing portions 32 are stacked on the two stacked sealing portions 32. In other words, it is preferable to store the inner bag 3 one by one in each storage portion 42 of the outer bag 4 in a state where the inner bag 3 is folded twice so that all the enclosing portions 32 are stacked. Thereby, since the area of the inner bag 3 (total surface area of the enclosing part 32) can be minimized (1/3), the moisture in the exothermic composition 2 is scattered from the storage part 42 to the outside as described above. This can be suppressed. At this time, similarly, when the second sheet material 31 is air-impermeable, the inner sheet 3 is the second sheet material 31 and when the second sheet material 31 is air-permeable, the first sheet material 31 is used. And the non-breathable sheet material (not shown) covering at least one surface of the second sheet material 32 is folded so as to be the upper and lower outermost surfaces, whereby the exothermic composition 2 enclosed in each enclosure portion 32. It is possible to make it difficult to effectively disperse moisture therein.

Further, when the number of the enclosing portions 32 provided in the inner bag 3 is four, the inner bag 3 may be folded by various methods and stored in the storage portions 42 of the outer bag 4, respectively. In the state where the inner bag 3 is folded twice or three times so that the enclosed portions 32 of the inner bag 3 are stacked, each of the accommodating portions 42 of the outer bag 4 is accommodated in the area of the inner bag 3 (total surface area of the enclosed portion 32). ) Can be minimized (1/4), which is preferable. Thereby, as above-mentioned, it can suppress that the water | moisture content in the heat-generating composition 2 splashes outside from the accommodating part 42. FIG. At this time, similarly, when the second sheet material 31 is air-impermeable, the inner sheet 3 is the second sheet material 31 and when the second sheet material 31 is air-permeable, the first sheet material 31 is used. And the non-breathable sheet material (not shown) covering at least one surface of the second sheet material 32 is folded so as to be the upper and lower outermost surfaces, whereby the exothermic composition 2 enclosed in each enclosure portion 32. It is possible to make it difficult to effectively disperse moisture therein. Even when the number of the enclosure parts 32 provided in the inner bag 3 is five or more, similarly, the inner bag 3 is arranged so that all the other enclosure parts 32 are stacked in one enclosure part 32. It is preferable that a plurality of folded portions are folded between adjacent enclosing portions 32 and the inner bag 3 is stored in the two storing portions 42 of the outer bag 4 one by one in this folded state.

Furthermore, in order to suppress the moisture in the exothermic composition 2 from scattering from the storage portion 42 to the outside, in the disposable body warmer 1 of the present embodiment, at least 3 of the storage portion 42 of the inner bag 3 is provided in the outer bag 4. One is provided. The moisture in the heat generating composition 2 enclosed in the inner bag 3 may be scattered outside from the outer peripheral edge of the storage unit 42 in addition to the front and back surfaces (packaging films 40 and 41) of the storage unit 42. When the outer bag 4 is provided with three or more storage portions 42, all the storage portions 42 are connected to at least one other storage portion 42 via the second seal portion 44, and at least One storage portion 42 is connected to at least two other storage portions 42 via the second seal portion 44. Therefore, when the shape of the storage portion 42 is rectangular, even if moisture in the exothermic composition 2 scatters from one side edge of the storage portion 42, it passes through the second seal portion 44 and others. As a result, the moisture from the exothermic composition 2 is eventually exchanged in the mutual storage portions 42. Therefore, the moisture from the exothermic composition 2 can be retained in the storage portion 42, and scattering from the storage portion 42 to the outside can be suppressed.

The at least three storage portions 42 of the outer bag 4 can be arranged so as to be aligned in one row, for example, as shown in FIG. In the case of this arrangement, with respect to the storage portions 42 at both ends, the other storage portions 42 are connected only to the side edges of one direction, but the storage portions 42 between them are connected to the side edges of the two directions. Since the other storage portions 42 are connected to each other, a total of two other storage portions 42 are connected, and moisture from the exothermic composition 2 can be satisfactorily retained in the storage portion 42, and from the storage portion 42 to the outside. It is possible to effectively suppress the scattering. Further, at least three storage portions 42 can be arranged in an L shape as shown in FIG. 6, for example. Even in the case of this arrangement, with respect to the storage portions 42 at both ends of the L-shape, the other storage portions 42 are connected to only one side edge, but the storage portion 42 between them has two directions. Since the other storage portions 42 are connected to the side edges of the storage portion 42, a total of two other storage portions 42 are connected, and moisture from the exothermic composition 2 can be satisfactorily retained in the storage portion 42. Can be effectively prevented from being scattered outside. 1 and 6 exemplify the case where the number of the storage units 42 is three, the same applies to four or more storage units 42.

In addition, at least three storage units 42 can be arranged so as to be aligned in a plurality of upper and lower rows. For example, when the number of storage parts 42 is four, as shown in FIG. 7, it can arrange | position so that it may each arrange 2 each in two upper and lower rows. In the case of this arrangement, since the other storage portions 42 are connected to the side edges in the two directions with respect to all the storage portions 42, a total of two other storage portions 42 are connected to each other in the storage portion 42. In addition, moisture from the heat generating composition 2 can be kept well, and scattering from the storage portion 42 to the outside can be effectively suppressed. For example, when the number of the storage units 42 is 6, as shown in FIG. In the case of this arrangement, with respect to the storage portions 42 at the four corners, the other storage portions 42 are connected to the side edges of the two directions, but the storage portions 42 between them are connected to the side edges of the three directions. Since the other storage portions 42 are connected, a total of three other storage portions 42 are connected, and moisture from the exothermic composition 2 can be better retained in the storage portion 42, and from the storage portion 42 to the outside. It is possible to more effectively suppress scattering. The same applies to the case of eight or more. Further, for example, when the number of storage units 42 is nine, as shown in FIG. In the case of this arrangement, with respect to the storage portions 42 at the four corners, the other storage portions 42 are connected to the side edges of the two directions, and the storage portions 42 between them are connected to the side edges of the three directions. Although the storage part 42 is connected, since the other storage part 42 is connected to the side edges of all four sides of the central storage part 42, a total of four other storage parts 42 are connected and stored. The moisture from the exothermic composition 2 can be further satisfactorily retained in the portion 42, and the scattering from the storage portion 42 to the outside can be more effectively suppressed.

Further, the at least three storage portions 42 may be T-shaped (illustrated when the number of storage portions 42 is four) shown in FIG. 10 or a cross shape (when the number of storage portions 42 is five) shown in FIG. In other words, the moisture from the exothermic composition 2 is kept in the storage portion 42 as much as possible, and scattered from the storage portion 42 to the outside. To suppress.

Thus, if the outer bag 4 has at least three storage portions 42, at least one storage portion 42 is provided with other storage portions 42 continuously on at least two side edges. In addition, a total of two other storage parts 42 are connected, and it is possible to more effectively suppress the moisture from the heat generating composition 2 in the storage part 42 from being scattered from the storage part 42 to the outside. Furthermore, if the outer bag 4 is formed so that at least two other storage units 42 are continuously provided for all the storage units 42, the moisture from the exothermic composition 2 is stored in the storage units 42 for each storage unit 42. It is possible to more effectively suppress scattering from the outside to the outside. The area of the plan view of the housing portion 42 is ^preferably ^{^{0.0025m 2 ~ 0.25m 2, 0.01m 2}} ~ 0.05m 2 is more preferable.

Furthermore, in order to prevent the moisture in the exothermic composition 2 from scattering from the storage portion 42, it is preferable that the strength of the first seal portion 43 formed on the outer peripheral edge of the outer bag 4 is strong. When the strength of the first seal portion 43 of the outer bag 4 is strong, when the moisture in the heat generating composition 2 is scattered outside from the side edge not connected to the other storage portion 42 of the storage portion 42, This is because scattering from the outside is blocked by the one seal portion 43, so that the heat generating composition 2 can be retained in the storage portion 42. The strength of the first seal portion 43 is preferably in the range of 10 N / 15 mm to 100 N / 15 mm, depending on the seal width and seal conditions. On the other hand, the strength of the second seal portion 44 between the two storage portions 42 may be equal to or less than the strength of the first seal portion 43, and is preferably in the range of 5 N / 15 mm to 80 N / 15 mm. In addition, the intensity | strength of the 1st seal | sticker part 43 and the 2nd seal | sticker part 44 can be measured with the test method based on JIS Z02381998. The seal width of the first seal portion 43 is preferably 1 mm to 50 mm, and more preferably 1 mm to 15 mm. Further, the seal width of the second seal portion 44 is preferably 1 mm to 50 mm, and more preferably 1 mm to 15 mm. If the strength of the second seal portion 44 is smaller than the strength of the first seal portion 43, the moisture in the exothermic composition 2 passes through the second seal portion 44 and is adjacent to the storage portion 42 adjacent to the first seal portion 43. It becomes easy to scatter. Further, the higher the ratio of the length of the second seal portion 44 to the first seal portion 43 is, the more moisture in the heat generating composition 2 is scattered to the second seal portion 44 than the first seal portion 43, As described above, since the water scattered between the adjacent storage portions 42 is exchanged, it is possible to suppress the water in the heat generating composition 2 from being scattered from the storage portion 42. Similarly, if the seal width of the second seal portion 44 is smaller than the seal width of the first seal portion 43, moisture in the heat generating composition 2 is scattered from the second seal portion 44 rather than the first seal portion 43. Since it becomes easy, it is preferable.

Table 1 shows the disposable body warmer 1 of the present embodiment in which the outer bag 4 has at least three storage portions 42 and the inner bag 3 having a plurality of enclosure portions 32 is stored in each storage portion 42 in a folded state. Embodiments 1, 2-1, and 2-2 have three storage portions 42 of the outer bag 4 shown in FIG. 1 and nine storage portions 42 of the outer bag 4 shown in FIG. Show. Further, as the disposable warmers of Comparative Examples 1, 2-1, and 2-2, in the same manner as in Examples 1, 2-1, and 2-2, the outer bag having three or nine storage portions is used, and the enclosed portion is 1 The one containing a single inner bag is shown. Furthermore, as the disposable hand warmer of Comparative Example 3, an outer bag having two storage portions and an inner bag having two sealed portions stored in a folded state are shown. For Examples 1, 2-1 and 2-2 in Table 1 and Comparative Examples 1 to 3, after production, they were disposable for 3 and 6 months under severe test conditions at a temperature of 40 ° C. and a humidity of 75%. The body was stored in an unused state, and then the heat generation duration of the heat generating composition 2 when the inner bag was taken out from the outer bag storage and used was measured. FIG. 12 shows the results of calculating the reduction rate based on the heat generation duration immediately after manufacturing (initial) for the measured heat generation duration of each example. In Example 1, the heat generation duration of the inner bag 3 (heat generating composition 2) taken out from the central storage part 42 (FIG. 1) among the three continuous storage parts 42 was measured, and Example 2 -1 and Example 2-2, two inner bags 3 (heat generation) taken out from one of the corners and the central storage part 42 (FIG. 9) out of the nine storage parts 42 arranged in a rectangular shape The exothermic duration for composition 2) was measured. Also, in Comparative Examples 1, 2-1, 2-2, the heat generation duration of the inner bag (heat generation composition) taken out from the storage portion at the same position as each of Examples 1, 2-1, 2-2 was also set. It was measured. Moreover, about the comparative example 3, the heat_generation | fever duration about the inner bag (heat-generating composition) taken out from either one of the two storage parts was measured. Also, storing the disposable body warmer for 3 months and 6 months under severe test conditions of a temperature of 40 ° C. and a humidity of 75% means storing the disposable body warmer at room temperature for 18 months and 36 months. Equivalent to.

As shown in FIG. 12, first, in Examples 1, 2-1, and 2-2, even if the unused state continues for a long period of time, the duration time is significantly reduced compared with immediately after manufacturing (initial stage). The heat generation duration is well maintained. On the other hand, in Comparative Example 3, when the unused state continues for a long period of time, the heat generation duration is well maintained until 18 months, but it does not decrease significantly after 36 months. However, the duration of heat generation is slightly decreased as compared with Examples 1, 2-1, and 2-2. This comparative example 3 corresponds to a storage portion in which other storage portions are continuously provided on one side edge, such as the storage portions 42 at both ends of FIG. 3 in this embodiment, and the unused state is long. Even if it continues for a period of time, the heat generation duration of the inner bag (heat generating composition) housed inside can be maintained to a certain extent, but at least two side edges as in Examples 1, 2-1, and 2-2. The storage part in which the other storage parts are continuously provided can hold the heat generation duration of the inner bag (heat generating composition) stored therein more effectively, so that it can be further prolonged. I understand. On the other hand, in Comparative Examples 1, 2-1, 2-2, when the unused state continues for a long period of time, the duration of heat generation is reduced compared with immediately after production, and if 36 months have passed at room temperature, The duration of heat generation is greatly reduced to 10% or more. Therefore, the disposable body warmer 1 of this embodiment in which the outer bag 4 has at least three storage portions 42 and the inner bag 3 having a plurality of enclosing portions 32 is stored in the respective storage portions 42 in a folded state. From the result of FIG. 12, even if the unused state continues for a long time, it is possible to extend the heat generation duration of the inner bag 3 (heat generating composition) stored in each storage portion 42.

In addition, if the blending ratio of moisture contained in the exothermic composition is increased, it is theoretically possible to maintain the duration of the disposable body warmer longer. However, the viscosity of the exothermic composition is considerably increased by simply increasing the water content. As a result, since the exothermic composition is sticky, it becomes difficult to enclose it in the inner bag 3, and it becomes impossible to produce a warmer, and the temperature of the exothermic composition does not rise and cannot be used as a warmer. Therefore, it is extremely difficult to produce a disposable body warmer that can sustain the heat generation duration of the heat generating composition for a long time simply by increasing the blending ratio of water contained in the heat generating composition. It is also conceivable to increase the amount of moisture contained in the exothermic composition by increasing the total amount of the exothermic composition, but if the total amount of exothermic composition is increased, The amount of exothermic composition enclosed becomes excessive. As a result, when the two sheet materials of the inner bag are sealed, the heat generating composition bites into the seal portion, so that there is a problem that both the sheet materials cannot be sealed well and the inner bag cannot be formed. Therefore, it is extremely difficult to produce a disposable body warmer that can maintain the heat generation duration of the heat generating composition for a long time simply by increasing the total amount of the heat generating composition.

Next, a method of using the disposable body warmer 1 having the above configuration will be described. First, any storage part 42 of the outer bag 4 is opened and the inner bag 3 is taken out. At that time, easy-opening means such as notches may be provided in correspondence with the respective storage portions 42 of the outer bag 4. Then, the release paper covering the adhesive layer or the non-breathable sheet material covering at least one surface of the first sheet material 31 and the second sheet material 32 is peeled off from the inner bag 3 to generate heat at a desired part of the body. It arrange | positions so that the composition 2 may hit. Thereby, warm heat is given to a wearing part by the heat emitted from exothermic composition 2.

In the disposable body warmer 1 configured as described above, the outer bag 4 has at least three storage portions 42, and the inner bag 3 having a plurality of enclosure portions 32 is stored in a folded state in each storage portion 42. Thereby, as described above, the shapes of the inner bag 3 and the outer bag 4 are devised so that the moisture contained in the exothermic composition 2 enclosed in the inner bag 3 is not scattered from the storage portion 42 as much as possible. Is packaged in the outer bag 4, so that even if the disposable body warmer 1 is placed in the store for a long period of time, such as when it is not used for a long period of time, the exothermic duration time is reduced due to a decrease in the moisture content of the exothermic composition 2. Decrease can be suppressed, and the heat generation duration at the beginning of production can be maintained over a long period of time. Therefore, even if the disposable body warmer 1 is used after it has been unused for a long time, it is possible to achieve the desired heat generation duration that was planned at the beginning of manufacture. Since the duration of the exothermic composition 2 scheduled at the beginning of production is generally displayed on the surface of the outer bag 4 and advertised to the user, it is actually used using the disposable body warmer 1 It is not necessary to dispose of the unused disposable body warmer 1 for the reason that the heat generation duration planned at the beginning of manufacture cannot be realized. Moreover, since it is not necessary to increase the amount of the exothermic composition more than necessary in order to keep the exothermic duration for a long time as is conventionally done, there is no need to add extra cost and the weight reduction makes it possible to use disposable warmers. 1 is more suitable for carrying and using.

Moreover, if the inner bag 3 is folded and compacted and stored in the outer bag 4, the amount of the outer bag 4 (wrapping films 40 and 41) is reduced compared to storing the inner bag 3 in the outer bag 4 without folding. Therefore, cost can be reduced in terms of material.

Further, when the inner bag 3 is folded, the moisture in the heat generating composition 2 enclosed in the enclosing part 32 can be hardly scattered by folding the inner bag 3 so that the non-breathable sheet material becomes the upper and lower surfaces. As a result, it is possible to better maintain the initial duration for a long period of time.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning of this invention. For example, in the said embodiment, although the shape of the enclosure part 32 of the inner bag 3 is a rectangular shape, it is not restricted to a rectangular shape, but other various shapes, such as polygonal shapes, such as a triangular shape and a pentagon shape, circular shape, elliptical shape, are included. It can employ | adopt and according to this, the shape of the inner bag 3 can also be made into various shapes. Further, the shape of the storage portion 42 of the outer bag 4 is not limited to a rectangular shape, and other various shapes such as a polygonal shape such as a triangular shape and a pentagonal shape, a circular shape, and an elliptical shape can be adopted. The shape of the outer bag 4 can also be various shapes. Even when the shape of the storage portion 42 of the outer bag 4 is other than a rectangular shape, the outer bag 4 is formed so that at least three other storage portions 42 are continuously provided in at least one storage portion 42, Alternatively, it is preferable that the outer bag 4 is formed so that at least two other storage portions 42 are continuously provided in all the storage portions 42.

DESCRIPTION OF SYMBOLS 1 Disposable body warmer 2 Exothermic composition 3 Inner bag 4 Outer bag 32

Enclosing part

40,41 Packaging film 42 Storage part 43 Peripheral seal part 44 2nd seal part

Claims

A disposable body warmer that contains moisture and generates heat when in contact with air is enclosed in an air-permeable inner bag, and the inner bag is housed in an air-tight outer bag. ,
The outer bag includes at least three storage portions that can store the inner bag and are partitioned from each other.
The inner bag includes at least two enclosing portions that can enclose the exothermic composition and are partitioned from each other, and is folded at least once so that at least one of the enclosing portions overlaps with the other enclosing portion. Disposable body warmer that is stored in the storage part in a state where
The disposable body warmer according to claim 1, wherein all the other enclosure parts are stacked on one enclosure part.
The inner bag has a non-breathable sheet material laminated on at least one surface,
The disposable body warmer according to claim 1 or 2, wherein the enclosing portion is overlapped so that the non-breathable sheet material becomes upper and lower outermost surfaces.
The disposable body warmer according to any one of claims 1 to 3, wherein the outer bag is formed so that at least three other storage portions are continuously provided in at least one storage portion.
The disposable body warmer according to any one of claims 1 to 3, wherein the outer bag is formed so that at least two other storage units are continuously provided in all the storage units.
The disposable body warmer according to any one of claims 1 to 5, wherein the number of the enclosed portions is 2 to 4.