JP5290716B2 - Eye heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hyperthermic implement for eyes with reduced sense of disorder to be felt while wearing the implement. <P>SOLUTION: The hyperthermic implement 10 for eyes includes a heating unit 20 with a heating element 24 housed and sealed within an inner bag 23, and an outer bag 30 to house the heating unit 20. The heating element 24 is made of a powder composition. The heating temperature of the hyperthermic implement 10 for eyes measured according to JIS S4100 reaches 40 &deg;C in 10 minutes from the start of heating, and reaches the peak temperature of 55&deg;C or higher in 30 minutes from the start of heating. The powder composition is preferably stored within the inner bag 23 at the degree of filling of 0.1-0.6 g/cm<SP>2</SP>. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an eye heating device that applies heat to eyes and the periphery of the eyes.

  The present applicant has previously proposed a water vapor generator having an eye mask-like shape that has a water vapor generating part using chemical energy and is applied to the eyes and the periphery of the eyes (see Patent Document 1). This water vapor generating body includes a moisture permeable inner bag containing a water vapor generating composition, a temperature adjusting material laminated on the moisture permeable inner bag, and a moisture permeable outer bag containing the whole. According to this water vapor generator, safe moisture like a steaming towel is continuously applied around the eyes and eyes by a simple structure using chemical energy against dry eyes that cause eye strain and other problems. There is an advantage that can lead to.

  However, since the temperature of a heating element that generates water vapor by a chemical reaction does not easily rise in the initial stage of the reaction, it may be difficult for some users to feel a sufficient warmth.

Japanese Patent Laid-Open No. 2000-5209

  An object of the present invention is to provide a heating device for eyes that has a further improved heat generation state as compared with the above-described prior art.

The present invention includes a heating unit in which a heating element is hermetically housed in a flat inner bag having a first surface and a second surface facing the first surface, and at least one surface is air permeable.
A surface located on the side close to the user's skin and a surface facing the surface and located on the side far from the user's skin; at least one surface has air permeability; and the heating unit is accommodated. A heating device for eyes with a flat outer bag,
The heating element comprises a powder composition;
An eye heating device having an exothermic temperature measured according to JIS S4100 that reaches 40 ° C. or more within 10 minutes from the start of exotherm and a peak temperature of 55 ° C. or more within 30 minutes from the start of exotherm is provided. .

  The eye heating device of the present invention can supply safe hot water vapor to the eye and its surroundings.

  The present invention will be described below based on preferred embodiments with reference to the drawings. FIG. 1 shows a plan view of an embodiment of the eye heating device of the present invention. The figure is the figure which looked at the heating device for eyes from the outer surface side (surface side which does not oppose skin). FIG. 2 is a perspective view of the eye heating device shown in FIG. 1 as viewed from the skin facing surface side. 3 is a cross-sectional view taken along line III-III in FIG.

  As shown in FIG. 3, the eye heating device 10 of the present embodiment includes a pair of heat generating units 20 and an outer bag 30 as constituent members. The heat generating unit 20 is accommodated in the outer bag 30. Hereinafter, each of these members will be described.

  As shown in FIG. 3 and FIG. 4B, the heat generating unit 20 includes a heating element 24 sealed in a flat inner bag 23 having a first surface 21 and a second surface 22 opposite to the first surface 21. Contained and configured. The inner bag 23 is composed of a first sheet 41 constituting the first surface 21 and a second sheet 42 constituting the second surface 22.

  As shown in FIG. 4A, the first and second sheets 41 and 42 have the same shape, and form a rectangle with four rounded corners. Further, the first and second sheets 41 and 42 are continuously joined to each other at their peripheral portions, so that one closed independent space is formed between the sheets 41 and 42. For joining the two sheets 41, 42, for example, means such as adhesion by an adhesive or fusion by application of heat can be used. As shown in FIGS. 3 and 4B, a heating element 24 is hermetically accommodated in each space. That is, each heat generating unit 20 includes one heating element 24.

  At least one of the first surface 21 and the second surface 22 constituting the inner bag 23 has air permeability. “Breathable” means that at least a part of the surface is breathable, and it is a preferred embodiment that the entire surface is breathable. , Not a requirement. As described above, since the inner bag 23 is composed of the first and second sheets 41, 42, at least one of the sheets 41, 42 has at least a part of the air permeability. doing.

  When the 1st or 2nd sheet | seat 41 and 42 has air permeability, as a raw material of this sheet | seat 41 and 42, the thing which laminated | stacked the nonwoven fabric on the moisture permeable film, the nonwoven fabric, and a moisture permeable film, non-breathable, for example And a perforated film obtained by perforating the film, and a laminate of a nonwoven fabric or paper (pulp) on the perforated film. As the moisture-permeable film, a porous film produced by melt-kneading a thermoplastic resin and an inorganic compound powder and extruding the powder into a sheet and then stretching it uniaxially or biaxially is suitably used. As a nonwoven fabric, the nonwoven fabric manufactured by the well-known method can be used by laminating | stacking by a single layer or two or more layers. On the other hand, when the 1st or 2nd sheet | seat 41 and 42 does not have air permeability, as a raw material of this sheet | seat 41 and 42, the non-breathable film which consists of thermoplastic resins, a nonwoven fabric etc. are used for this film, for example Can be used. Regardless of whether the first and second sheets 41 and 42 are air permeable or not air permeable, the sheets 41 and 42 are made of the material constituting the heating element 24. It is preferable to use a sheet that does not leak through the sheets 41 and 42.

  The heating element 24 accommodated in the sealed space formed in the inner bag 23 is a part that contains an oxidizable metal and generates heat by an oxidation reaction caused by the oxidizable metal coming into contact with oxygen. The heating element 24 is made of a powder composition, and preferably contains an oxidizable metal, a reaction accelerator, a water retention agent, an electrolyte, and water.

  The heating device for eyes 10 according to the present embodiment has an exothermic temperature measured according to JIS S4100 that reaches 40 ° C. or more within 10 minutes from the start of exotherm, and has a peak temperature of 55 ° C. or more within 30 minutes from the start of exotherm. Is. By showing such a temperature characteristic, that is, a characteristic that the rise is quick and the temperature gradually decreases thereafter, when the user wears the eye heating device 10, the user can fully feel the warm feeling at the time of wearing. Can do. In particular, in order to feel a feeling of warmth (warmth) immediately after wearing, it is effective to shorten the time to reach 40 ° C. (rise time), and the rise time is preferably within 8 minutes from the start of heat generation. . Further, since the heating element 24 generates heat by an oxidation reaction in contact with oxygen, the rise time is preferably 30 seconds (0.5 minutes) or more from the viewpoint of stable heat generation. Furthermore, in order to feel a warm feeling during wearing, the peak temperature is preferably 55 ° C to 65 ° C. Although depending on the adhesion at the time of wearing, when the eye heating device 10 is accompanied by water vapor, if the peak temperature exceeds 65 ° C., the skin temperature may be 45 ° C. or more. Furthermore, when the eye heating device 10 is accompanied by water vapor, it is preferable that the heat generation maintaining time of 50 ° C. or more is 60 minutes or less from the viewpoint that the effect of water vapor is sufficiently felt after use.

  In general, the heating temperature of the eye heating device 10 and the surface temperature of the skin of the user wearing the eye heating tool 10 generally do not coincide with each other, and the skin surface temperature is generally several degrees lower. In the present specification, the generation of heat refers to a time when the generator 24 in the eye heating device 10 starts to come into contact with oxygen.

In order to obtain a warm feeling with the eye heating device 10 of the present invention, the heat generation temperature due to the influence of the inner bag 23 is more dominant than the outer bag 30. Therefore, as the constituent sheets of the inner bag 23 and the outer bag 30, the degree of ventilation and moisture permeability of the sheets constituting the inner bag 23 are more than the degree of ventilation and moisture permeability of the sheets constituting the outer bag 30. It is preferable to use a small one. For example, in order to give water vapor to the user's skin, when only the first sheet 41 of the inner bag 23 has air permeability, the air permeability of the sheet 41 (according to JIS P8117, hereinafter referred to as air permeability). Sometimes, the value measured by this method is preferably 30 to 20000 seconds, particularly 60 to 10000 seconds. The moisture permeability (according to JIS Z0208, hereinafter referred to as moisture permeability) is measured by this method. Is preferably 300 to 12000 g / (m ² · 24 hr), particularly preferably 400 to 8000 g / (m ² · 24 hr). Moreover, when both the 1st sheet | seat 41 and the 2nd sheet | seat 42 have air permeability among the inner bags 23, the air permeability of the 1st sheet | seat 41 may be 4000-60000 second, especially 6000-40000 second. The moisture permeability is preferably 200 to 8000 g / (m ² · 24 hr), particularly preferably 220 to 6000 g / (m ² · 24 hr). The air permeability of the second sheet 42 is preferably 6000 to 18000 seconds, particularly preferably 8000 to 60000 seconds, and the moisture permeability is 80 to 6000 g / (m ² · 24 hr), particularly 120 to 2000 g / (m ² · 24 hr). It is preferable that

  For example, as shown in FIG. 10, which will be described later, the eye heating tool 10 is used in contact with the position of both eyes of the user, so that the inner bag is formed in such a manner that the bias of the powder composition does not occur. 23 is preferably hermetically housed in 23. This is because when the powder composition is biased, the heat generation temperature varies, and the temperature may partially increase. In order to seal and store the powder composition in the inner bag 23, for example, after the powder composition is sealed and stored in the inner bag 23 to produce the heat generating unit 20, the heat generating unit 20 is placed between a pair of rolls. The powder composition may be compressed by pressing it through an operation such as passing it through.

Further, since the eye heating device 10 is used while being in contact with the position of both eyes of the user, the heating unit 20 may become misaligned when worn or may give a feeling of use that is too heavy. A flat plate shape is preferable. That is, with respect to the area covering the eyes and the periphery of the eyes, the thickness direction is preferably about 10 mm, and particularly preferably about 5 mm. Here, the eye and the periphery of the eye refer to the outer region of the eyelid in the open eye state, and include a region wider than that including the orbital region, and preferably, for example, 1000 to 4000 mm ² for one eye, Particularly preferred is 1500 to 3000 mm ² .

  As a form for obtaining the above-mentioned heat generation characteristics as the heat generation characteristics of the eye heating device 10, the amount of water contained in the powder composition is made larger than usual and the fluidity of the powder composition is increased. Should be reduced. In this case, it is preferable that the amount of water in the powder composition is 20% by weight or more and the amount of the oxidizable metal is 20% by weight or less. As another form, it is possible to employ a form in which the amount of oxidizable metal contained in the powder composition is increased as compared with a normal case to increase heat generation. Specifically, the amount of oxidizable metal contained in the powder composition is preferably 45% by weight or more and the amount of water is preferably 20% by weight or less.

These powder compositions preferably have an apparent density of the exothermic powder after preparation of less than 0.7 (g / cm ³ ) as a “loose” apparent density from the viewpoint of exothermic characteristics. In particular, this value is preferably set to 0.5 to 0.6 (g / cm ³ ) from the viewpoint of quick rise and peak temperature.

The powder composition preferably has a compression degree of 15 to 50%, particularly preferably 20 to 40%, calculated from the relationship between the above-mentioned “relaxed” apparent density and “hardened” apparent density. . If the degree of compression is too high, the exothermic reaction slows down. On the other hand, if the degree of compression is too low, the reactivity tends to vary. Here, the calculation formula of the degree of compression is as follows.
Compressibility (%) = (solid apparent density−loose apparent density) / solid apparent density × 100

The loose apparent density and the hard apparent density are measured values of powder physical properties for determining the degree of compression of the powder. Loose apparent density is a measured value derived by filling powder into a specified capacity cup by allowing the powder to drop naturally and weighing it, and filling density when the powder is allowed to fall naturally Is shown. The solid apparent density is an apparent density in a state where the sample is deaerated by tapping the packed sample whose loose apparent density has been measured and is packed most closely. These densities can be measured in accordance with ASTM standards, and a powder property rating device PT-S (Hosokawa Micron Corporation) or the like can be used as a measuring device. The “hard” apparent density is preferably larger than the “loose” apparent density and 1.1 g / cm ³ or less.

Furthermore, in order to obtain the above-described heat generation characteristics, it is preferable to adjust the degree of filling of the powder composition into the space formed in the inner bag 23. The degree of filling can be expressed, for example, by the weight of the powder composition per apparent area of the space in plan view of the inner bag 23. When this value is defined as the degree of filling, the degree of filling is preferably 0.1 to 0.6 g / cm ² , and more preferably 0.2 to 0.4 g / cm ^2. Can be effectively prevented.

  Each heat generating unit 20 having the above configuration is accommodated in an outer bag 30 as shown in FIG. The outer bag 30 has a flat shape having a surface 31 located on the side close to the user's skin and a surface 32 facing the surface 31 and located on the side far from the user's skin. ing. In this case, the 1st surface 21 of the inner bag 23 in each heat generating unit 20 is located in the surface 31 side located in the side near the user's skin in the outer bag 30, and the 2nd surface 22 of the inner bag 23 is located. The heat generating unit 20 is accommodated in the outer bag 30 so that the outer bag 30 is located on the surface 32 side located on the side farther from the user's skin. The outer bag 30 is comprised from the skin side sheet | seat 51 which comprises the surface 31 located in the side close | similar to a user's skin, and the outer side sheet | seat 52 which comprises the surface 32 located in the side far from a user's skin. . When the eye heating tool 10 is worn, the upper side of the outer bag 30 is located on the user's upper eyelid side, and the lower side is located on the user's lower eyelid side.

  The skin side sheet 51 and the outer sheet 52 have the same shape. As shown in FIG. 1, both sheets 51 and 52 have a horizontally long and approximately elliptical shape that is symmetrical to the left and right, and a central portion of the lower side is constricted toward the upper side and a slit 53 that extends in the vertical direction is formed. ing. Both the sheets 51 and 52 are joined at their peripheral portions to form a peripheral joint 54. As a result, a space for accommodating the heat generating unit 20 is formed between the sheets 51 and 52. Each heat generating unit 20 is accommodated in this space. Each heat generating unit 20 is disposed in the outer bag 30 at a position corresponding to the eyes of the user when the eye heating device 10 is mounted. For joining the two sheets 51, 52, for example, means such as adhesion by an adhesive or fusion by application of heat can be used.

  The heat generating unit 20 may be accommodated in the outer bag 30 in a non-fixed state with respect to the outer bag 30, or the outer bag with a part of the heat generating unit 20 fixed to a part of the outer bag 30. 30 may be accommodated. When the heat generating unit 20 is not fixed to the outer bag 30, both sheets are used from the viewpoint of preventing the heat generating unit 20 from being displaced in the outer bag 30 during use of the eye heating device 10. The shape of the peripheral joint 54 formed by joining 51 and 52 is preferably a similar shape slightly larger than the outer shape of the heat generating unit 20, as shown in FIGS.

  The peripheral joint 54 formed by joining the skin side sheet 51 and the outer sheet 52 includes a first joint 54 a that joins the upper side of the sheets 51 and 52, and the left and right side edges of the sheets 51 and 52. It is roughly divided into a second joint portion 54b that joins the part and the lower side part. When the eye heating device 10 is worn, the first joint 54a is located on the upper eyelid side of the user. The 2nd junction part 54b is located in a user's both external eye-angle side and a lower eyelid side. In the 1st junction part 54a, both the sheets 51 and 52 are joined in the whole region of those contact parts. That is, so-called solid bonding is performed. In the 2nd junction part 54b, both the sheets 51 and 52 are joined by the dot-shaped joining point. That is, the 2nd junction part 54b is a discontinuous junction including a non-joining part, and is comprised from the aggregate | assembly of a dot-like junction point.

  As shown in FIG. 1 and FIG. 2, the dot-shaped joint points may be arranged such that adjacent joint points are spaced apart from each other, or so that the joint points touch each other or the joint points partially overlap each other. It may be arranged. The shape of the dot-like junction point may be circular as shown in FIGS. 1 and 2, or may be a polygon such as a triangle, a quadrangle, a hexagon, or a star. Furthermore, you may arrange | position combining these shapes suitably. What is necessary is just to determine suitably the shape and arrangement | positioning method of a todd-shaped junction point so that the feel of the 2nd junction part 54b may become favorable.

  Since the second joint portion 54b in the peripheral joint portion 54 is composed of an aggregate of dot-like joint points, the rigidity due to the joint is increased at the left and right side edge portions and the lower end edge portion of the outer bag 30. It is suppressed. As a result, even when the right and left side edges and the lower edge of the outer bag 30 come into contact with the user's skin, particularly the skin near the cheekbone, when the eye heating device 10 is being worn, the hardness of the joint 54b is perceived. It becomes difficult and it becomes hard to produce the feeling of strangeness of wearing. On the other hand, the first joint 54 a in the peripheral joint 54 is formed by so-called solid joining of the sheets 51 and 52, so that the rigidity of the first joint 54 a is increased and the form of the outer bag 30 is stable. It becomes. This is advantageous from the standpoint of improving the appearance of the eye heating device 10 and ease of mounting. Further, the non-joining portion located between the dot-like joining points secures a flow path between the inside of the outer bag 30 and the outside air, and adjusts excessive expansion of the outer bag 30 due to air intake or heat generation. it can.

From the viewpoint of avoiding the uncomfortable feeling of wearing the eye heating device 10, the area of each dot-shaped junction is preferably 0.5 to ³ mm ² , particularly 0.8 to 1.5 mm ² . From the same point of view, it is preferable that the dot-like joining point is disposed at an inner position at a slight distance from the left and right side edges and the lower edge of the outer bag 30. In addition, if the position where the dot-shaped joint point is arranged is too far from the left and right side edge portions and the lower end edge portion of the outer bag 30, the skin side sheet 51 and the outer sheet 52 at the side edge portion and the lower end edge portion, Therefore, it is preferable that the width of the non-bonded portion of the sheets 51 and 52 is limited to about 0.5 to 2 mm. In addition, the unit of a dot-shaped junction point does not need to be the same shape and size.

  Of the two surfaces constituting the outer bag 30, that is, the surface located on the side close to the user's skin and the surface located on the side far from the user's skin, at least one surface has air permeability. The meaning of “having air permeability” is the same as in the case of the inner bag 23 described above. Since the outer bag 30 is composed of the skin side sheet 51 and the outer sheet 52 as described above, a part of at least one of the sheets 51 and 52 has air permeability.

  Whether the skin side sheet 51 and the outer sheet 52 have air permeability or not is determined by the first sheet 41 and the second sheet 42 constituting the inner bag 23 of the heat generating unit 20 accommodated in the outer bag 30. Determined in relation to air permeability. As shown in FIG. 3, the heat generating unit 20 has a first sheet 41 facing the skin-side sheet 51 of the outer bag 30 and a second sheet 42 facing the outer sheet 52 of the outer bag 30. When accommodated in the outer bag 30, when the first sheet 41 has air permeability, the skin side sheet 51 also has air permeability, and the outer sheet 52 has air permeability. It may or may not have. When the second sheet 42 has air permeability, the outer sheet 52 also has air permeability, and the skin side sheet 51 may or may not have air permeability. . When both the first sheet 41 and the second sheet 42 have air permeability, both the skin side sheet 51 and the outer sheet 52 have air permeability.

  Whether or not each sheet constituting the inner bag 23 and the outer bag 30 has air permeability also depends on whether or not the eye heating device 10 is intended to impart water vapor to the user's skin. In the case where the eye heating device 10 imparts water vapor to the user's skin, both the first sheet 41 of the inner bag 23 and the skin side sheet 51 of the outer bag 30 need to be breathable. . Further, the second sheet 42 of the inner bag and the outer sheet 52 of the outer bag 30 may or may not have air permeability. In the case where the eye heating device 10 generates water vapor, for example, as the sheets 41 and 42 constituting the inner bag 23, Japanese Patent Application Laid-Open No. 2005-199051 and the patent application related to the earlier application of the present applicant. It is preferable to employ the one described in Kaikai 2006-204733.

  As each sheet | seat 51 and 52 which comprises the outer bag 30, when these sheets have air permeability, a woven fabric, a nonwoven fabric, a knitted fabric, these composite materials etc. can be used, for example. In the case where it does not have air permeability, for example, a film or a film in which a woven fabric, a nonwoven fabric, a knitted fabric, or a composite material thereof is laminated can be used. In particular, as the skin side sheet 51, it is preferable to use a material having a good touch. From this point of view, regardless of whether the skin-side sheet 51 has air permeability or not, the most surface in contact with the skin is composed of a woven fabric, a nonwoven fabric, a knitted fabric, or a composite material thereof. It is preferable.

  Furthermore, it is preferable that each sheet | seat 51 and 52 which comprises the outer bag 30 has a stretching property in terms of a feeling of mounting | wearing. Here, the term “stretchability” refers to a property having extensibility or having both extensibility and elongation recovery property. Examples of stretchable sheets include polyesters such as PET (polyethylene terephthalate), polyolefins such as PE (polyethylene) and PP (polypropylene), synthetic fibers such as polyamide and polyacrylic; natural fibers such as cellulose, silk, cotton and wool Or using a composite fiber of them, or spinning two or more kinds of fibers, air-through method, spunbond method, needle punch method, melt blown method, card method, thermal fusion method, hydroentanglement method, solvent bonding method The nonwoven fabric manufactured by the method can be used. In addition to non-woven fabrics, knitted fabrics can also be used.

  On the surface of the outer bag 30 on the skin side sheet 51 side, ear hooks 33 are provided on the left and right sides of the outer bag 30. The material 34 constituting the ear hook 33 may be a string or a sheet. In the case of a string, in order to obtain a fit, the ear hooking portion may be made of a belt-like elastic body such as a flat rubber. Further, as described in JP-A-2007-289682, a base sheet provided with a horizontally long opening may be used. Examples of the material of the material 34 constituting the ear hook 33 include a nonwoven fabric, a woven fabric, paper, and a resin film, and a stretchable material is preferable.

  As shown in FIGS. 1 and 2, the eye heating device 10 further includes a flavoring body 60 that is detachably attached to the outer bag 30 that constitutes the eye heating device 10. The fragrance body 60 has a mushroom shape, and is configured by impregnating a fragrance on a thin support such as paperboard or nonwoven fabric. By attaching the fragrance body 60 to the outer bag 30, the fragrance is volatilized from the fragrance body 60 during use of the eye heating device 10. By inhaling the stripped fragrance, the user's mood is further relaxed in combination with the thermal sensation. As another form of the scented body 60, for example, a scent containing a fragrance in an air-permeable sachet can be cited.

  FIG. 5 shows a state where the flavoring body 60 is detachably attached to the outer bag 30. The outer bag 30 is provided with a pocket-shaped accommodation portion 37 that opens upward at the position of the central portion in the lateral direction of the first joint portion 54a formed on the upper side thereof. The accommodating part 37 is demarcated by the skin side sheet | seat 51 and the outer side sheet | seat 52 by making a part of 1st junction part 54a into a non-joining state. The shape of the accommodating portion 37 substantially matches the shape of the aroma body 60. This effectively prevents the flavoring body 60 from falling off during use of the eye heating device 10. The fragrance body 60 is inserted into the pocket-shaped accommodation part 37 opened upward and attached to the outer bag 30 from the top to the bottom.

  In a state where the fragrance body 60 is housed in the pocket-shaped housing portion 37, a part of the upper portion of the fragrance body 60 protrudes from the outer bag 30 as shown in FIG. 2. The part which protruded from the outer bag 30 in the fragrance body 60 functions as a knob part when taking out the fragrance body 60 from the outer bag 30. Thereby, the insertability of the fragrance body 60 is improved.

  FIGS. 6 to 9 show another form of the scented body 60 and another form of attachment of the scented body 60. The embodiment shown in FIG. 6 is different from the above-described embodiment in that the flavoring body 60 is a vertically long rectangle. The attachment form of the fragrance body 60 to the outer bag 30 is the same as that of the above-mentioned embodiment. In the embodiment shown in FIG. 7, the fragrance body 60 is circular. The flavoring body 60 is detachably attached to a surface 32 located on the side farther from the user's skin in the outer bag 30. The attachment position of the scented body 60 is the central portion in the lateral direction on the upper side of the outer bag 30. As the detachable attachment means, for example, an adhesive can be used. The pressure-sensitive adhesive is applied to one surface of the fragrance body 60. Then, the fragrance body 60 is attached to the surface 32 by making the application surface of the adhesive face and abut the surface 32 of the outer bag 30 on the side far from the user's skin. When the surface 32 located on the side far from the user's skin is made of a fiber material, for example, if it is made of a nonwoven fabric, a hook member of a hook-and-loop fastener is used as a means for attaching the flavoring body 60. Can do. The hook member is attached to one surface of the aroma body 60. Then, the hook member engages with the fiber by making the attachment surface of the hook member face and abut the surface 32 located on the side farther from the user's skin in the outer bag 30, and the flavoring body 60 is engaged with the surface 32. Attached to.

  In the embodiment shown in FIG. 8, the flavoring body 60 has a vertically long inverted triangle shape with rounded corners and slightly convex sides. The fragrance body 60 is formed with a substantially U-shaped or substantially V-shaped cut 61. The fragrance body 60 is formed with a tongue piece portion 62 and a frame portion 63 surrounding the tongue piece portion 62 with the cut 61 as a boundary. The flavoring body 60 is detachably attached to the outer bag 30 by sandwiching the outer bag 30 with the outer bag 30 interposed between the tongue piece portion 62 and the frame portion 63. The attachment position of the scented body 60 is the central portion in the lateral direction on the upper side of the outer bag 30.

  In the embodiment shown in FIG. 9, the fragrance body 60 has a substantially square shape. The fragrance body 60 is inserted and attached into a pocket-shaped accommodation portion 56 formed by attaching a rectangular sheet 55 to the outer surface of the outer sheet 52 in the outer bag 30. The sheet 55 is fixed to the outer surface of the outer sheet 52 at its lower side and left and right side edges. As a result, a pocket-shaped accommodation portion 56 opened upward is formed. Although not shown, in a state where the fragrance body 60 is inserted into the housing portion 56, a part of the upper side portion of the fragrance body 60 protrudes from the outer bag 30.

  Regardless of the shape of the scented body 60 and its attachment mode in any of the above-described embodiments, in the eye heating device 10, a part of the outer bag 30, which is one of its constituent members, is reinforced. It is preferable that it is colored in a color associated with the scent of the incense body 60. This is because a more relaxed feeling can be given to the user from a psychological and physiological viewpoint by the synergistic effect of the scent of the scented body 60 and the color of the outer bag 30. In the outer bag 30, for example, the surface 32 located on the side far from the user's skin can be colored in the above-described color. Specifically, the outer sheet 52 is colored, or the outer sheet 52 is manufactured using colored fibers. Instead of coloring a part of the outer bag 30, the entire outer bag 30 may be colored in the above color.

  Regarding the relationship between the scent and the color associated with the scent, although there are some subjective parts based on individual differences, an objective relationship is established as a whole. For example, a purple color is associated with a lavender scent, and a yellow color is associated with a chamomile scent. The rose fragrance is associated with a pink color.

  For example, as shown in FIG. 10, the eye heating device 10 is used by being hooked on an ear using an ear hook 33. By adopting such a usage pattern, the heat generated from the eye heating device 10 is uniformly applied to the eyes of the user and the surroundings, regardless of the user's posture (for example, lying down or sitting down). Can be applied to. This is advantageous in that the versatility of the usage pattern of the eye heating device 10 is improved. As an example, the eye heating device 10 can be used while lying down at home. It can also be used immediately when eyestrain is felt during desk work. Furthermore, it can be used easily when traveling on a business trip (for example, in a train, airplane, car, etc.).

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, the dot-like joint of the second joint portion 54b of the outer bag 30 in the embodiment is formed on the upper side of the outer bag 30, and the solid joint of the first joint portion 54a is formed on the left and right side edge sides of the outer bag 30 and It may be formed on the lower side.

  Moreover, although the 1st junction part 54a of the outer bag 30 in the said embodiment was what is called a solid joint, it replaces with this and the skin side sheet | seat 51 and the outer sheet | seat 52 are replaced by the continuous linear junction part which has a predetermined width | variety. You may join.

  Moreover, in the said embodiment, although the 2nd junction part 54b in the outer bag 30 was located in the right-and-left side edge side and the lower side, the 2nd junction part 54b was formed over the perimeter of the outer bag 30, The first bonding portion 54a may not be formed.

[Experimental Example 1]
In the following description, “%” means “% by weight” unless otherwise specified.
(1) Preparation of powder exothermic composition The components shown in Table 1 below were mixed by the following procedure to prepare 500 g of a powder exothermic composition.
<1> The heating element composition is sieved in advance so as not to have a large lump.
<2> 39.7 g of water-absorbing polymer (Aqua Pearl A3, Sundia Polymer Co., Ltd.) is weighed and placed in a polyethylene bag with a chuck.
<3> Spray the water-absorbing polymer of <2> with 263.8 g of 3.2% saline so as to be uniform.
<4> To the above <3>, 100.0 g of iron powder (RKH, Dowa Iron Powder Industry Co., Ltd.) is further added under a nitrogen atmosphere. Then, close the polyethylene bag chuck and mix the water-absorbing polymer and iron powder well.
<5> Further, in a nitrogen atmosphere, 17.0 g of activated carbon (Carborafine, Nippon Enviro Chemicals Co., Ltd.) and 39.7 g of another activated carbon (granular white birch, Nippon Enviro Chemicals Co., Ltd.) are added, and a polyethylene bag is added Shake well to stir the powder.
<6> Finally, 39.7 g of vermiculite (CW-1, manufactured by NN Chemical Co., Ltd.) is added in a nitrogen atmosphere and stirred in the same manner.

(2) Production of Eye Heating Tool An eye heating tool 10 shown in FIGS. 1 to 4 was produced. The powder exothermic composition prepared in the above (1) was filled into an inner bag 23 (50 × 50 mm) to produce a heat generating unit 20. The first sheet 41 in the inner bag is made of a breathable PE sheet containing calcium carbonate (air permeability 7800 seconds / 100 cc), and the second sheet 42 is made of a breathable PE sheet containing calcium carbonate (air permeability 10,000 seconds / 100 cc). It was. The filling degree of the powder exothermic composition was as shown in Table 1. The degree of filling was calculated from the filling amount of the exothermic powder composition. The produced heat generating unit 20 was accommodated in the outer bag 30, and the target eye heating tool 10 was produced. The skin side sheet 51 in the outer bag 30 was made of a PET / PE nonwoven fabric (basis weight 74 g / m ² ), and the outer sheet 52 was made of a PET nonwoven fabric (basis weight 100 g / m ² ). The outer sheet 52 in the outer bag 30 was colored light purple. As the fragrance body 60, a filter paper (No. 63, 300 mm × 300 mm, manufactured by Advantech Co., Ltd.) with a fragrance of 0.04 g was used.

[Experiment 2]
Using the powder exothermic composition shown in Table 1, a powder exothermic composition was prepared in the following procedure in the same manner as in Experimental Example 1.
<1> The heating element composition is sieved in advance so as not to have a large lump.
<2> 50.6 g of water-absorbing polymer (Aqua Pearl A3, Sundia Polymer Co., Ltd.) is weighed and placed in a polyethylene bag with a chuck.
<3> 78.5 g of 4.4% saline is sprayed uniformly on the water-absorbing polymer of <2>.
<4> 316.0 g of iron powder (RKH, Dowa Iron Powder Industry Co., Ltd.) is further added to <3> in a nitrogen atmosphere. Then, close the polyethylene bag chuck and shake well to mix the water-absorbing polymer and iron powder.
<5> Further, in a nitrogen atmosphere, 12.6 g of activated carbon (Carbolafine, Nippon Envirochemicals Co., Ltd.) is added, and the polyethylene bag is shaken well to stir the powder.
<6> Finally, 42.3 g of vermiculite (CW-1, manufactured by NN Chemical Co.) is added in a nitrogen atmosphere and stirred in the same manner.
The eye heating device shown in FIGS. 1 to 4 was produced in the same manner as in Experimental Example 1 using the prepared powder exothermic composition.

[Experimental Example 3]
Using the powder exothermic composition shown in Table 1, a powder exothermic composition was prepared in the following procedure in the same manner as in Experimental Example 1.
<1> The hot body composition is sieved in advance so as not to have a large lump.
<2> 35 g of water-absorbing polymer (Aqua Pearl A3, Sundia Polymer Co., Ltd.) is weighed and placed in a polyethylene bag with a chuck.
<3> The 23% g of 3.2% saline is sprayed uniformly on the water-absorbing polymer of <2>.
<4> To the above <3>, 147.5 g of iron powder (RKH, Dowa Iron Powder Industry Co., Ltd.) is further added under a nitrogen atmosphere. Then, close the polyethylene bag chuck and shake well to mix the water-absorbing polymer and iron powder.
<5> Further, in a nitrogen atmosphere, add 15 g of activated carbon (Carborafine, Nippon Envirochemicals) and 35 g of another activated carbon (granular white birch, Nippon Envirochemicals), shake the polyethylene bag well, Stir the powder.
<6> Finally, 35 g of vermiculite (CW-1, manufactured by NN Chemical Co., Ltd.) is added in a nitrogen atmosphere and stirred in the same manner.
The eye heating device shown in FIGS. 1 to 4 was produced in the same manner as in Experimental Example 1 using the prepared powder exothermic composition.

[Measurement of exothermic temperature]
The exothermic temperature of the eye heating tool obtained in each experimental example was measured by the following method. In accordance with JIS S4100, the apparatus of FIG. 11 was used, and the measurement environment was 20 ° C. and 50% RH. A polypropylene plate (thickness 7 mm, hereinafter referred to as PP plate) is placed on a heat bath with a commercially available gauze covered, and eight layers of flannel cloth (100% cotton tex) 5.905 twin yarn flannel). The temperature of the heat bath was maintained at a temperature of 35 ° C. ± 1 ° C. by placing sensors (K thermocouple and platinum-side temperature resistor Pt100) at the center and end of the PP plate. After the temperature of the PP plate became constant, the heating tool was arranged so that no gap was generated between the flannel cloth and the PP plate, and measurement was started. The measurement progress was recorded on a recorder. Then, a time T1 when the temperature from the start of heat generation was 40 ° C., a time T2 when the peak temperature was 55 ° C. or more from the start of heat generation, and a heat generation maintenance time T3 of 50 ° C. or more were measured. The results are shown in Table 2. The numbers after the decimal point are rounded off.

[Measurement of time during actual use]
In addition to the measurement of the exothermic temperature, the usage time (average of n = 3) when this eye heating device was actually used for the subject was measured. The skin temperature was measured on the heel and used in an environment of 20 ° C., and the time when the skin temperature was lower than the skin temperature was measured as the end point of the usage time (data collection type handy thermometer “LT-8” (gram Co., Ltd.), temperature probe “LT-ST08” (thermistor), uptake rate 10 seconds / Data). The results are shown in Table 2.

[Evaluation of warm feeling]
The warmth of the eye warmer was asked to the subjects after the use time measurement was completed (the overall evaluation including temperature, warmth preference, warmth duration, comfort and usability). Was evaluated as “○” and “others” was evaluated as “x”. The results are shown in Table 2.

  As is clear from the results shown in Table 2, the exothermic temperature measured according to JIS S4100 reached 40 ° C or higher within 10 minutes from the start of exotherm, and peak temperature of 55 ° C or higher within 30 minutes from the start of exotherm. Even if the eye warmer was actually used, a sufficient warmth was felt.

FIG. 1 is a plan view of an embodiment of the eye heating device of the present invention as seen from the outer surface side. FIG. 2 is a perspective view of the eye heating device shown in FIG. 1 as viewed from the skin facing surface side. 3 is a cross-sectional view taken along line III-III in FIG. 4A is a plan view showing the heat generating unit, and FIG. 4B is a cross-sectional view taken along the line bb in FIG. 4A. FIG. 5 is a perspective view showing a state in which the flavoring body is attached to the outer bag. FIG. 6 is a perspective view showing another form of the scented body and another form of attaching the scented body. FIG. 7 is a perspective view showing another form of the scented body and another form of attaching the scented body. FIG. 8 is a perspective view showing another form of the scented body and another form of attaching the scented body. FIG. 9 is a perspective view showing another form of the scented body and another form of attaching the scented body. FIG. 10 is a perspective view showing a mounted state of the eye heating device shown in FIG. FIG. 11 is a schematic diagram showing an apparatus used for measuring the heat generation temperature.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Heating device for eyes 20 Heat generating unit 21 1st surface 22 2nd surface 23 Inner bag 24 Heat generating body 30 Outer bag 31 Surface located in the side close | similar to a user's skin 32 Located in the side far from a user's skin Surface 41 1st sheet 42 2nd sheet 51 Skin side sheet 52 Outer sheet 53 Slit 54 Joining part 54a 1st joining part 54b 2nd joining part 60 Incense body

Claims (5)

A heating unit in which a heating element is hermetically housed in a flat inner bag having a first surface and a second surface opposite to the first surface, wherein at least one surface is air permeable;
A surface located on the side close to the user's skin and a surface facing the surface and located on the side far from the user's skin; at least one surface has air permeability; and the heating unit is accommodated. A heating device for eyes with a flat outer bag,
The heating element comprises a powder composition;
The powder composition contains 45 to 63.2% by weight of an oxidizable metal, 15 to 20% by weight of water, and has a compression degree of 20 to 40% obtained from the following calculation formula:
Compressibility (%) = (solid apparent density−loose apparent density) / solid apparent density × 100
An eye heating device having an exothermic temperature measured according to JIS S4100 that reaches 40 ° C. or more within 10 minutes from the start of exotherm and a peak temperature of 55 ° C. or more within 30 minutes from the start of exotherm. In the outer bag, the sheet constituting the surface located on the side close to the user's skin and the sheet constituting the surface located on the side far from the user's skin are joined to each other at their peripheral portions. It has a bag shape with a peripheral joint formed
The eye heating device according to claim 1, wherein at least a part of the peripheral joint portion is constituted by an assembly of discontinuous joint points. The powder composition, eye for warming device according to claim 1 or 2 wherein is housed a filling degree of 0.1 to 0.6 g / cm ² in the inner bag.   The eye heating device according to any one of claims 1 to 3, further comprising a fragrance attached to the outer bag in a detachable manner.   The warming tool for eyes according to claim 4, wherein at least a part of the outer bag is colored in a color associated with a scent of the flavoring body.

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