JP7261582B2 - mask - Google Patents

Description

The present invention relates to masks.

In recent years, the functions of masks covering the eyes and around the eyes have diversified, and various masks have been developed. For example, a mask having a thermal effect is used, in which a heating element that utilizes oxidation heat generated by an oxidation reaction of an oxidizable metal is housed inside. Among them, an eye mask that warms the wearer's eyes with a heating element and is used by hooking a pair of ear hooks on the left and right ears is widely preferred because it is lightweight and easy to use.

On the other hand, expectations for eye masks are increasing more and more. For example, Patent Document 1 discloses an eye mask that specifies the position of the ear hook connecting part, the shape of the opening, slits, etc. from the viewpoint of making it easy to put the ear hook on the ear and fit the mask body to the face. disclosed.

JP 2008-295779 A

However, in recent years, the use of eye masks with a thermal effect has diversified, and not only the use of eye masks with the wearer raising the upper body, but also the use of the wearer in the supine position and even in the lateral position have arisen. . In such cases, the eye mask should fit the wearer as closely as possible in order to obtain a sufficient thermal effect. Therefore, in the conventional eye mask disclosed in Patent Document 1, there is room for improvement in fit.

Here, in order to improve the fit of the eye mask, for example, when trying to bring the heating tool into close contact with the wearer's face by shortening the width direction of the eye mask without special devising, However, there was a tendency for the wearer to feel oppressed because the stress due to the ear hook increased in the part where the ear hook was attached and behind the ear of the wearer.
Therefore, the present inventor conducted extensive research from the viewpoint of suppressing the positional deviation of the mask even in the lateral recumbent position while reducing the feeling of oppression at the part where the ear hook is attached and behind the ear. When wearing the mask, by firmly holding the eyebrows of the wearer while not pressing the area from the outer corner of the eye to the temple and from the outer corner of the eye to the earlobe, the lateral displacement of the mask is effectively suppressed and the fit is improved. It was found that the feeling of oppression could be reduced. Further studies will be carried out from the perspective of solving the problem of improving the relaxation of the whole body by uniformly warming a wide area even in the side lying position while obtaining a good balance between the fit and the feeling of pressure in the mask. As a result, the present inventors have found that it is effective as a guideline for solving the problem that the mask satisfies specific conditions, and completed the present invention.

That is, the present invention includes a mask main body covering both eyes, a heat generating element provided in the mask main body, and both ends of the mask main body in the longitudinal direction which are joined to each other, and held so as to cover both eyes of the wearer by the mask main body. and a pair of ear hooks that meet the following conditions.
(conditions)
the ear hook portion has an ear hook opening,
In a direction perpendicular to the maximum length direction of the opening, Da (cm) is the minimum width of the portion of the ear hook that is positioned above the opening, and the opening of the ear hook is Da (cm). When the minimum value of the width of the portion located below the portion is Db (cm), Da/Db is 1.3 or more and 15.0 or less,
Dc (cm) is the length of the outer edge from the intersection of the straight line including Db and the lower outer edge of the ear hook to the joint between the ear hook and the mask main body. At this time, Dc is 1 cm or more and 4.5 cm or less.

ADVANTAGE OF THE INVENTION According to this invention, the mask which can obtain the favorable balance of a fitting feeling and a feeling of oppression can be provided. In addition, the mask of the present invention warms a wider area than the conventional one, and the improved fit gives a uniform warm feeling, further improving the feeling of relaxation of the whole body.

Fig. 2 is a plan view schematically showing a state in which the ear hook portion of the heating tool according to the embodiment is opened; FIG. 4 is a plan view schematically showing a state before opening the ear hook portion of the heating tool according to the embodiment; FIG. 2 is an exploded perspective view of the heating tool shown in FIG. 1; 1 is a plan view schematically showing a heating element according to an embodiment; FIG. 1 is a cross-sectional view schematically showing a heating element according to an embodiment; FIG. FIG. 10 is a plan view schematically showing a modification of the heating tool according to the embodiment; 2 is a plan view schematically showing an ear hook portion of the heating tool of Example 1. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in all the drawings, the same constituent elements are denoted by the same reference numerals, and the description thereof will be omitted as appropriate. Also, air permeability and breathability are the same.

[Warmware]
First, an example of the heating tool 50 according to the present embodiment will be described with reference to FIGS. 1 to 3. FIG.
The heating tool 50 according to the present embodiment is an eye mask having a so-called thermal effect. It is used to apply heated water vapor to and around the eye. However, the aspect of the mask is not limited to that of this embodiment.

As shown in FIG. 1, the heating tool 50 has a mask main body 51 and a pair of ear hooks 52 (52L, 52R) formed with holes 54 (54L, 54R) into which ears are inserted. ing.

The heating tool 50 is worn so that the ear hooks 52 are hung on the wearer's ears and the mask main body 51 covers the wearer's eyes. In this wearing state, the hot steam generated from the heating element 100, which will be described later, is applied to the wearer's eyes.

FIG. 2 is a plan view schematically showing a state before opening the ear hooks 52 of the heating tool 50. As shown in FIG. In the figure, the pair of ear hooks 52 are folded toward the inside of the heating tool 50 and joined to each other at the longitudinal center of the mask main body 51 . The joined areas are provided with perforations or half-cut grooves. That is, perforations or half-cut grooves are provided so as to bisect the pair of ear hooks 52 formed in a series, and the wearer cuts them apart to create ear hooks 52L and ear hooks 52R. and are obtained. After that, by inverting the ear hooking portion 52L and the ear hooking portion 52R outward, the state of FIG. 1 can be obtained. As shown in FIG. 1, when the ear hooking portion 52 is opened outward from the mask main body portion 51, the ear hooking portion 52 has a V-shape in plan view. Further, when the ear hooking portion 52 is opened outward from the mask body portion 51 , the hole 52 extends obliquely downward with respect to the longitudinal direction of the mask body portion 51 .
By adopting such an arrangement, the mask main body 51 can be more easily fitted to the face when worn.

FIG. 3 is an exploded perspective view of the heating implement 50 shown in FIG. As shown in FIG. 3, the mask main body 51 is composed of a bag 53, and a pair of heating elements 100 are provided inside the bag 53. As shown in FIG.

The mask main body 51 has a laterally long shape having a longitudinal direction X and a width direction Y orthogonal thereto, and is substantially bilaterally symmetrical. The mask main body 51 is made of a flexible sheet, and may or may not have elasticity. From the viewpoint of giving a stronger feeling, it is preferable that the material has elasticity.

The bag body 53 that constitutes the mask main body 51 includes a first bag sheet 531 that is positioned closer to the wearer's skin surface and a second bag body sheet 532 that is positioned farther from the wearer's skin surface. have. Here, a first bag sheet 531 and a second bag sheet 532 are provided so as to sandwich the heating element 100, which will be described later.

The first bag sheet 531 and the second bag sheet 532 are of the same shape and have a substantially oval shape. The outer shape of the first bag sheet 531 and the second bag sheet 532 forms the outer shape of the mask main body 51 . The first bag sheet 531 and the second bag sheet 532 are superimposed on each other, at least partially joined at their peripheral edge portions, and joined along the X direction at the central portion in the Y direction, thereby forming the bag 53 becomes. A hot-melt adhesive, for example, can be used to join the first bag sheet 531 and the second bag sheet 532 . Note that the heating element 100 may be fixed to the bag body 53 by an adhesive, a heat seal, or the like.

As the first bag sheet 531 and the second bag sheet 532, those capable of sufficiently supplying air to the heating element 100 inside are preferable, and for example, fiber sheets such as non-woven fabric can be used. For example, one or more selected from needle-punched nonwoven fabrics, air-through nonwoven fabrics and spunbond nonwoven fabrics can be used.

The bag body 53 has a substantially V-shaped notch portion 57 (notch portion 571, notch portion 572) are formed respectively. The notch portion 571 and the notch portion 572 differ in the degree of cut. The notch portion 571 is positioned between the eyebrows of the wearer or in the vicinity thereof when the heating tool 50 is worn. The notch portion 572 is located at the bridge of the wearer's nose when the heating device 50 is worn. Therefore, the notch portion 572 is normally cut to a greater extent than the notch portion 571 .

Furthermore, as shown in FIG. 1, the bag 53 has a slit 32 connected to the notch 572 extending from the lower end of the bag 53 in a central region of the bag 53 and separating the heating element 100 . ing. The slits 32 make it easier to improve the feeling of wearing.

The ear hooking portion 52 of the heating tool 50 is arranged on the first bag sheet 531 as shown in FIG. 3 before use. Before use, that is, when the left and right ear hooks 52 are positioned on the first bag sheet 531 , the contour formed by the left and right ear hooks 52 is the contour of the first bag sheet 531 . is almost the same as

The ear hooks 52 have the function of holding the heating device 50 on the wearer's face.
The ear hooks 52 are used as a pair, and the ear hooks 52L and 52R are attached to the respective ends of the mask main body 51 in the longitudinal direction (X direction). More specifically, in the ear hook portion 52, when the mask body portion 51 side is the base end and the side far from the mask body portion 51 is the tip end, the area on the base end side of the ear hook portion 52 and the mask body portion 51 are joined to the wearer-side sheet (first bag sheet 531).
In addition, the ear hooking portion 52L and the ear hooking portion 52R each have a joint region that overlaps the mask main body portion 51. As shown in FIG.

As shown in FIG. 1 , the ear hook portion 52 has a slit 31 extending from the lower outer edge toward the hole 54 . As a result, in the later-described La direction, the width of the portion of the ear hook 52 located below the hole 54 and supporting the main body 51 between the outer corner of the eye and the earlobe when worn is reduced. In the heating tool 50 shown in FIG. 1, Db (cm), which will be described later, is the length from the hole 54 to the upper end of the slit 31 . In addition, in the heating implement 50 of FIG. 1, the slit 31 is provided on a straight line including Db (cm).

1 shows the lower outer edge of the ear hook portion 52 from the intersection of the slit 31 and the lower outer edge of the ear hook portion 52 to the junction between the ear hook portion 52 and the mask main body portion 51. The length Dc (cm) is shown. In the heating tool 50, Dc is 1 cm or more and 4.5 cm or less, which is a range where stress tends to concentrate on the ear hook portion 52 during use. In other words, in the present embodiment, the straight line including Db (cm) is 1 cm to 4 cm in length from the joint between the ear hook 52 and the mask main body 51 in the lower outer edge of the ear hook 52 . It intersects with the lower outer edge of the ear hook 52 within a range of 0.5 cm. As a result, when the heating tool 50 is worn, the stress can be effectively reduced, and the part of the ear hook part 52 that touches the skin from the outer corner of the eye to the earlobe is stretched and thinned, thereby reducing the feeling of oppression. At the same time, as a result of being able to increase the extensibility of the area below the hole 54 of the ear hook 52, it becomes easier to reduce the feeling of oppression while maintaining the feeling of fit.

Dc is preferably 1.5 cm or more and 4.0 cm or less, and more preferably 1.8 cm or more and 2.5 cm or less, from the viewpoint of improving the balance between fit and pressure.

The length of the slit 31 is not particularly limited, but is preferably adjusted so that Db (cm), which will be described later, is within an appropriate range. For example, the length of the slit 31 can be 0.3 cm or more and 3.5 cm or less.
Moreover, the slit 31 may be provided in a direction perpendicular to the extension direction of the ear hook portion 52, or may be provided in a diagonal direction. It is preferable that the slits 31 are provided in a direction perpendicular to the direction in which the ear hooks 52 extend, from the viewpoint of preventing the cut pieces of the slits 31 from coming into contact with the user's skin when the heating device 50 is worn.

The slits 31 are preferably provided only at the lower outer edges of the ear hooks 52 from the viewpoint of facilitating control of the balance between the fitting feeling and the oppressive feeling. In other words, it is preferable that the ear hook portion 52 does not have a slit on the outer edge of the upper side.

The slit 31 may be provided before the heating tool 50 is used, and is formed by the wearer breaking a previously provided broken line portion before the heating tool 50 is used. can be anything.

The ear hooking portion 52 preferably has stretchability in the La direction. Specifically, in the heating tool 50, the stress (N) when the ear hooking portion 52 is stretched 100% in the later-described La direction is preferably 10 N or less, more preferably 5 N or less. As a result, the balance between the fitting feeling and the feeling of oppression can be further improved, and the ear hooking portion 52 can be easily stretched and put on the ear during use. Furthermore, from the viewpoint of obtaining a good fit, the stress (N) at 100% elongation in the La direction of the ear hook portion 52 is preferably 1.5 N or more.

The stress (N) of the ear hook 52 when stretched can be measured by a method based on JIS L1913.
That is, the sample width is 80 ± 10 mm, the initial length of the sample is set to 55 ± 15 mm in the tensile tester, and the tensile speed is 300 mm / min, and the specified length in the La direction (stress at 100% elongation If the length is 100% of the initial length, and if the stress at 50% elongation is 50% of the initial length), measure the tensile strength when elongated.
Specifically, it will be described later in Examples.

The ear hooking portion 52 may be composed of a single-layer sheet, or may be a laminate of a plurality of sheets. A fiber sheet made of a fiber material such as a nonwoven fabric can be used as the ear hook portion 52 . The ear hook portion 52 may be made of the same material as the bag 53 described above, or may be made of a different material. From the viewpoint of facilitating control of the balance between the feeling of fit and the feeling of pressure, the ear hooking portion 52 is preferably made of non-woven fabric.

The planar shape of the pair of ear hooks 52 is not particularly limited, but the planar shape on the right side and the planar shape on the left side of the mask body 51 when the mask body 51 is bisected along the vertical center line are the same. Preferably. For example, a substantially square shape is mentioned.

The hole 54 is a hole for hanging the ear hooking portion 52 on the wearer's ear, and is an opening penetrating the ear hooking portion 52 . The hole 54 is provided substantially in the center of the ear hook portion 52 . Also, the holes 54 are formed in regions other than the joint regions where the mask main body 51 and the ear hooks 52 are joined.

The shape of the holes 54 is not particularly limited, but in FIGS. ing. Also, the hole 54 may or may not be vertically symmetrical. That is, the curvature radii may be the same or different in the upper and lower sides. Further, the hole 54 extends downward with respect to the longitudinal direction of the mask main body 51 and is inclined when the ear hooking portion 52 is opened outward from the mask main body 51 .

The opening area of the hole 54 of the ear hook 52 can be adjusted to accommodate both people with large ears and people with small ears. One or more slits extending toward the outer circumference of the hook 52 may be provided. Such a slit can be opened as necessary when the ear hook 52 is put on the ear, and the opening area can be adjusted.

[heating element]
Next, the heating element 100 provided in the heating tool 50 will be described. In this embodiment, a pair of heating elements 100 are arranged in the heating tool 50, and each heating element 100 covers the wearer's eyes.

The planar shape of the heating element 100 is substantially square. The rigidity of the heating element 100 is greater than that of the mask main body 51 , and the heating element 100 as a whole is less likely to expand and contract than the mask main body 51 .

FIG. 4 is a plan view showing an example of the heating element 100 of this embodiment. 5 is a cross-sectional view taken along the line AA of FIG. 4. FIG. A heat generating body 100 of the present embodiment includes a heat generating section 10 and a container 20 that houses the heat generating section 10 .

The exothermic part 10 contains an oxidizable metal, a carbon component, a water absorbing agent, water, a reaction accelerator, and the like.
Specifically, the exothermic part 10 generates heat by an oxidation reaction of an oxidizable metal to impart a thermal effect, and has a performance of a heat generation temperature of 30° C. or more and 70° C. or less in a measurement conforming to JIS S4100. can use things. In addition, the heat-generating part 10 has an effect of generating water vapor by heating the water contained therein.

Oxidizable metals are metals that generate oxidation reaction heat, and include powders and fibers of one or more metals selected from the group consisting of iron, aluminum, zinc, manganese, magnesium, and calcium. .

The carbon component has water retention ability, oxygen supply ability, and catalytic ability, and for example, one or more materials selected from the group consisting of activated carbon, carbon black, acetylene black, and graphite can be used. can.

The heat-generating portion 10 can contain a water-absorbing agent in order to retain moisture and efficiently advance the oxidation reaction of the oxidizable metal. As the water-absorbing agent, a water-absorbing polymer or a water-absorbing powder can be used.

In the present embodiment, the heat-generating portion 10 is sheet-like, but the heat-generating portion 10 may be powder-like or sheet-like. However, it is preferably in the form of a sheet from the viewpoint of excellent usability. Such a sheet-like heating element can be obtained by any method such as a method of papermaking together with fibers, a method of coating, a method of compaction by pressing or the like.

The thickness of the heat generating portion 10 is preferably 0.2 mm or more, more preferably 0.4 mm or more, and still more preferably 0.5 mm or more, from the viewpoint of obtaining appropriate rigidity. Moreover, the thickness of the heat generating portion 10 is preferably 5 mm or less, more preferably 3 mm or less, and still more preferably 2 mm or less from the viewpoint of improving handleability.
By setting the thickness of the heat-generating portion 10 within the above range, the heat-generating effect can be enhanced, and the size of the heat-generating body 100 can be made easy to use. In addition, since the heat-generating part 10 has an appropriate rigidity, it is possible to feel a stronger fit when the heating tool 50 is worn.
Note that the thickness of the heat generating portion 10 indicates an average thickness.

Next, the container 20 that constitutes the heating element 100 will be described.
The containing body 20 is at least partly permeable and contains the heat generating section 10 . For example, as shown in FIG. 5, the container 20 can be configured by bonding the peripheral edge portions 203 of two sheets (a first container sheet 201 and a second container sheet 202).
The first container sheet 201 is positioned closer to the wearer's skin than the heat-generating portion 10, and the second container sheet 202 is positioned farther from the wearer's skin than the heat-generating portion 10. It is. When the heating tool 50 supplies water vapor to the eyes or skin, the first container sheet 201 is preferably a sheet having excellent air permeability from the viewpoint of efficiently supplying water vapor to the eyes or skin of a person. On the other hand, the second container sheet 202 is preferably a sheet with poor air permeability. That is, the second container sheet 202 preferably has less air permeability than the first container sheet 201, and more preferably has no air permeability. In other words, the air permeability of the second container sheet 202 is preferably higher than the air permeability of the first container sheet 201 .

When the heat-generating part 10 has a heat-generating function by oxidizing a metal to be oxidized, the first container sheet 201 and the second container sheet 201 are used as described above in order to efficiently apply water vapor to the eyes and skin by the heating device 50 . When the air permeability of the sheet 202 is adjusted, in the exothermic part 10, air is taken in preferentially from the side of the first accommodation sheet 201, and the exothermic reaction proceeds. Therefore, from the viewpoint of balancing the fit and exothermic reaction and warming the eyes or skin appropriately, the air permeability of the first storage sheet 201 is preferably 3,000 to 6,000 seconds/100 ml, and 4,000. ~6,000 sec/100 ml is more preferred.

The "permeability" is a value measured according to JIS P8117, and is defined as the time required for 100 ml of air to pass through an area of 6.45 cm ² under constant pressure.

As the air-permeable sheet, a resin-made porous sheet or a resin-made sheet having air holes can be used. For example, one or more of polyethylene, polypropylene and ethylene-vinyl acetate copolymer can be used. can be done.

As the second container sheet 202, one that is substantially impermeable to oxygen can be used. 1 type, or 2 or more types can be used.

Since the heating tool 50 of the present embodiment contains an oxidizable metal that is oxidized by oxygen, it is usually stored in an oxygen-blocking bag.

The heating tool 50 of the present embodiment includes a mask main body 51 that covers both eyes, a heating element 100 provided in the mask main body 51, and both ends of the mask main body 51 in the longitudinal direction. It is provided with a pair of ear hooks 52 (52L, 52R) held so as to cover both eyes of the wearer, and satisfies the following conditions.
(conditions)
The ear hook portion 52 has an ear hook hole 54,
In the direction perpendicular to the maximum length direction of the hole 54, Da (cm) is the minimum width of the portion of the ear hook portion 52 located above the hole 54, and the ear hook portion 52 below the hole 54 is Da (cm). Da/Db is 1.3 or more and 15.0 or less, where Db (cm) is the minimum value of the width of the portion located at . Dc (cm) is 1 cm or more and 4.5 cm or less, where Dc (cm) is the length of the outer edge from the intersection of the .

Here, the maximum length of the hole 54 is the length La (cm) when no load is applied to the ear hook portion 52 in the state before the heating tool 50 is used. In the heating tool 50, as shown in FIGS. 1 and 2, the holes 54 are arcuate at both ends in the X direction, and a straight line connecting the deepest points of the arcs is La (cm). The maximum length direction of the hole 54 is a direction parallel to the La direction.
If La at the hole 54L is different from La at the hole 54R, the La at the hole 54 is the average value of both. Further, when the ear hooking portion 52 has a slit extending from a part of the outer edge of the hole 54 to the outer edge of the ear hooking portion 52, the slit is not included in the maximum length La. Furthermore, in the case of a mask in which the hole 54 is a notch having no opening area (for example, a T-shaped notch), a straight line connecting the vertices of both ends of the opening corresponding to the hole 54 and extending in the La direction is La (cm)). Alternatively, the mask main body 51 and the ear hooking portion 52 may be integrated (one continuous sheet).

In the heating tool 50, the minimum value Db (cm) of the width of the portion of the ear hook portion 52 located below the hole 54 is the length in the direction perpendicular to the La direction from the upper end of the slit 31 to the hole 54. It's becoming In other words, the slit 31 reduces the width of the lower portion of the ear hook 52 in the direction perpendicular to the lengthwise direction of the hole 54 of the ear hook 52 .

In the heating tool 50, Da/Db is 1.3 or more and 15.0 or less. That is, in the direction perpendicular to the La direction, the ear hook portion 52 has a region in which the width of the portion located below the hole 54 is smaller than the width of the portion located above the hole 54, so that the user can The region that contacts the skin from around the cheek to around the earlobe becomes smaller, and when the ear hook 52 is stretched and the heating tool 50 is worn, the upper end of the mask main body 51 can easily fit around the eyebrows of the wearer. At the same time, the lower part of the ear hook 52 can be easily stretched, and the concentration of stress in the lower part can be suppressed. Especially, the stress in the area from the outer corner of the eye to the earlobe can be reduced. Furthermore, since Da/Db is 15.0 or less, it is possible to reduce the feeling of oppression while maintaining the strength of the ear hook portion (for example, the ear hook portion 52 must not be cut from below) and the fit.
Da/Db is preferably 1.7 or more, more preferably 2.0 or more, and still more preferably 2.5 or more from the viewpoint of making it easier to stretch the lower part of the ear hook portion 52 and reducing the feeling of pressure. is. On the other hand, Da/Db is preferably 12 or less, more preferably 7.0 or less, and even more preferably 5.0 or less, from the viewpoint of obtaining a good fit.

In addition, in the heating tool 50, Da is preferably 0.5 cm or more and 4.0 cm or less, and from the viewpoint of maintaining the strength of the ear hook portion 52, Da is more preferably 0.8 cm or more. , more preferably 1.0 cm or more, still more preferably 2.0 cm or more, and even more preferably 2.5 cm or more. On the other hand, from the viewpoint of reducing the oppressive feeling of the ear hook portion 52, Da is more preferably 3.5 cm or less, and still more preferably 3.3 cm or less.

Furthermore, in the heating implement 50, Db is preferably 0.3 cm or more and less than 2.0 cm from the viewpoint of achieving both improved fitting feeling and reduced oppressive feeling. Db is more preferably 0.5 cm or more, and still more preferably 0.6 cm or more, from the viewpoint of maintaining the strength of the ear hook portion 52 and improving the fit. On the other hand, Db is more preferably 1.5 cm or less, more preferably 1 .3 cm or less.

Here, in the eye mask type heating tool 50, even a slight gap tends to have a significant effect on the heating effect. It can also occur. Therefore, a higher level of fit is required. On the other hand, since there is a so-called trade-off relationship between the feeling of fit and the feeling of pressure, it is important to appropriately control the balance of the load applied to the wearer in the heating device 50 as a whole.
In the heating device 50 of the present embodiment, by satisfying the above conditions, the heating device 50 can be easily brought into close contact with the vicinity of the wearer's eyebrows, and the fit can be improved. It is possible to reduce the load applied to the worn part and the back of the ear, suppress the oppressive feeling, and sufficiently obtain the warming effect of the heating tool 50. - 特許庁In addition, as the fitting feeling is improved, a more uniform heating effect can be obtained in the entire heating tool 50 . Furthermore, according to the heating tool 50, a wider area than the conventional one is warmed, and the area around the eyes is effectively warmed, so that the whole body can be easily relaxed.

Although the embodiments of the present invention have been described above with reference to the drawings, these are examples of the present invention, and various configurations other than those described above can be adopted.

In the heating device 50, the case where the slit 31 is singular for one ear hook portion 52 has been described, but from the viewpoint of facilitating control of the balance between the fit feeling and the oppressive feeling, the slit 31 is provided for one ear hook portion. There may be more than one for the part 52 . The number of slits 31 is preferably 2 to 6, more preferably 2 to 4, in one ear hook portion 52 . The plurality of slits 31 may have the same length or different lengths. Moreover, the directions in which the slits 31 extend may or may not be parallel to each other. In the heating tool 50, the slits 31 are formed in a direction perpendicular to the maximum length direction of the holes 54, but the extending direction of the slits 31 is not limited to this.

Further, in the heating tool 50, an example in which the ear hooking portion 52 has the slit 31 has been described, but for example, as shown in FIG. . In the heating tool 61, Db (cm) is the length from the top of the notch 41 to the hole 54 in the direction perpendicular to the La direction. In the heating tool 61, the straight line including Db is within the range of 1 cm to 5 cm in length from the joint between the ear hook 52 and the mask main body 51 on the lower outer edge of the ear hook 52. It preferably intersects with the lower outer edge of the hook 52 .
The shape of the notch 41 is not particularly limited, and as shown in FIG. 6, it may be triangular, arc-shaped, or partially curved. Also, the number of notches 41 is not particularly limited.

The above is an explanation of Db (cm), which is the length from the hole 54 when the ear hook 52 has the slit 31 or the notch 41 . On the other hand, the heating tool of the present embodiment is not limited to the case where the ear hooking portion 52 has the slit 31 or the notch portion 41, and may be in a form other than this. Db (cm) is similarly obtained even in a mode in which the position of the hole with respect to the ear hook is adjusted.

In addition, in order to adjust the Da/Db ratio of the ear hook portion to 1.3 or more and 15.0 or less, the ear hook portion 52 must be positioned below the hole 54 in the direction perpendicular to the La direction. It may be designed to have a region where the width of the part that covers the hole 54 is smaller than the width of the part that is located above the hole 54 . For example, it can be achieved by changing the outer shape of the ear hook, such as shape and size, or by adjusting the position of the hole with respect to the ear hook.

Regarding the above-described embodiments, the present invention further discloses the following masks or applications. The heating tool 50 of the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the gist of the present invention.
In the above embodiment, the function of the heating device 50 is explained as the heating element 100 by the oxidation-reduction reaction, but the heating element 100 is not limited to this and may be heated by other methods. , shading, fragrance, antibacterial, pressing and dustproof functions. As for the mask, in addition to a mask having a steam heating function such as the heating device 50, for example, (1) a sleep mask for the purpose of blocking light using a light-shielding member, and (2) a member having a heat-retaining function are used. , a mask that can warm the eyes after warming the mask with a heater such as a microwave oven; (4) A mask that uses a member having a scent component together with a heating element to give a relaxing effect; (5) A mask that has beads or spheres that gives a feeling of pressure to the eyes and exerts an acupressure effect; (6) Electricity It is possible to change it to a mask that produces a massage effect by vibrating with, for example.

<1> A mask body that covers both eyes, a heating element provided in the mask body, and a pair of pairs that are joined to both ends in the longitudinal direction of the mask body and held by the mask body so as to cover both eyes of the wearer. A mask that has an ear hook and satisfies the following conditions:
(conditions)
the ear hook portion has an ear hook opening,
In a direction perpendicular to the maximum length direction of the opening, Da (cm) is the minimum width of the portion of the ear hook that is positioned above the opening, and the opening of the ear hook is Da (cm). When the minimum value of the width of the portion located below the portion is Db (cm), Da/Db is 1.3 or more and 15.0 or less,
Dc (cm) is the length of the outer edge from the intersection of the straight line including Db and the lower outer edge of the ear hook to the joint between the ear hook and the mask main body. At this time, Dc is 1 cm or more and 4.5 cm or less.
<2> The mask according to <1>, wherein Db is 0.3 cm or more and less than 2.0 cm.
<3> The mask according to <1> or <2>, wherein the ear hooking portion includes a slit extending from the lower outer edge of the ear hooking portion toward the opening.
<4> The mask according to <3>, wherein the slits are plural.
<5> The mask according to any one of <1> to <4>, wherein the stress when the ear hooking portion is stretched 100% in the maximum length direction is 10 N or less.
<6> The mask according to any one of <1> to <5>, wherein the ear hook portion is a non-woven fabric.
<7> The mask according to any one of <1> to <6>, wherein the heating element generates steam through an oxidation reaction of an oxidizable metal.
<8> The mask according to any one of <1> to <7>, wherein a pair of the heating elements are arranged so as to cover both eyes.
<9> When the ear hooks are opened outward from the mask body, the openings for the ear hooks extend obliquely downward with respect to the longitudinal direction of the mask body, <1> to <8> The mask according to any one of 8>.
<10> Any one of <1> to <9>, wherein when the ear hooking portion is opened outward from the mask body, the ear hooking portion has a V-shape in plan view. mask of.
<11> The heat generating element includes a heat generating section and a container that houses the heat generating section therein,
The thickness of the heat generating portion is preferably 0.2 mm or more, more preferably 0.4 mm or more, still more preferably 0.5 mm or more, and is preferably 5 mm or less, more preferably 3 mm or less. and more preferably 2 mm or less, the mask according to any one of <1> to <10>.
<12> The containers include a first container sheet positioned closer to the wearer's skin than the heat-generating portion, and a second container sheet positioned farther from the wearer's skin than the heat-generating portion. and
The mask according to <11>, wherein the air permeability of the second container sheet is higher than the air permeability of the first container sheet.
<13> Air permeability of the first storage sheet is preferably 3,000 to 6,000 seconds/100 ml, more preferably 4,000 to 6,000 seconds/100 ml, <11> or <12 The mask described in >.
<14> Da/Db is preferably 1.7 or more, more preferably 2.0 or more, still more preferably 2.5 or more, while preferably 12 or less, more preferably 7 The mask according to any one of <1> to <13>, which is 0.0 or less, more preferably 5.0 or less.
<15> Da/Db is preferably 1.7 or more and 12 or less, more preferably 2.0 or more and 7.0 or less, and still more preferably 2.5 or more and 5.0 or less, <1> to <14 The mask according to any one of >.
<16> Db is more preferably 0.5 cm or more, still more preferably 0.6 cm or more, while more preferably 1.5 cm or less, still more preferably 1.3 cm or less The mask according to any one of <1> to <15>.
<17> The mask according to any one of <3> to <16>, wherein the slit is formed in a direction perpendicular to the maximum length direction of the opening.
<18> The mask according to any one of <1> to <17>, wherein the heating element emits hot steam.
<19> The mask according to any one of <1> to <18>, which is an eye mask type.

The present invention will be described in more detail below with reference to examples. However, the scope of the invention is not limited to such examples.

(Examples and Comparative Examples)
A heating tool as shown in FIG. 1 was manufactured according to the following procedure so as to have the configuration shown in Table 2.
[Preparation of exothermic powder aqueous dispersion]
Materials were prepared according to the composition ratio shown in Table 1 and prepared by the following procedure. An aqueous solution was prepared by dissolving xanthan gum in water, then dissolving tripotassium phosphate and potassium hydroxide. On the other hand, a powder obtained by pre-mixing iron powder and activated carbon is prepared, and the pre-mixed powder is added to the above aqueous solution, and stirred with a disk turbine type stirring blade at 150 rpm for 10 minutes to form a slurry-like exothermic powder water dispersion. got Incidentally, sodium chloride was sprayed on the surface of the first water-absorbent sheet to be described later after the water dispersion of exothermic powder was applied.

[Preparation of heat generating part]
As the first water absorbent sheet, paper made of wood pulp (basis weight 20 g/m ² , manufactured by Inogami Co., Ltd.) and a water absorbent polymer (spherical, average particle size 300 μm, Aqualic CA, manufactured by Nippon Shokubai Co., Ltd., basis weight 30 g) /m ² ) and wood pulp paper (basis weight 30 g/m ² , manufactured by Ino Paper Co., Ltd.) are laminated and integrated into a polymer sheet (with water absorption of 10 to 45% by mass of the maximum water absorption amount (air permeability of 2 seconds/100 ml) was used, and polyethylene laminated paper (manufactured by Nittoku Co., Ltd.) was used as the second water absorbent sheet.
A polymer sheet to be used as the first water-absorbent sheet was prepared, and the exothermic powder water dispersion prepared as described above was applied to the surface of the first water-absorbent sheet of 25 cm ² (5 cm × 5 cm) with a thickness of approximately 3 mm (coating amount: 1.7 g). ), sprinkle 0.089 g of salt (sodium chloride in the Japanese Pharmacopoeia: manufactured by Tomita Pharmaceutical Co., Ltd.) on the coated surface, and cover the coated surface with a second water-absorbent sheet 25 cm ² (5 cm × 5 cm). Then, a heat generating portion was produced.

[Preparation of heating element]
The first container sheet in the container was composed of a porous stretched polyethylene moisture-permeable film containing calcium carbonate (air permeability of 3,500 seconds according to JIS P8117). The second container sheet was composed of a polyethylene moisture-impermeable film. Water-absorbing paper (basis weight: 35 g/m ² ) is laminated on one surface of the second container sheet, and the first container sheet and the second container sheet are separated with one sheet of the above-mentioned sheet-like heat-generating part in between. were stacked so that the water-absorbent paper faced outward, and the sheets were joined together at the peripheral edges to obtain a rectangular heating element.

[Preparation of heating tool]
The first bag sheet is polypropylene nonwoven fabric (needle punch method, basis weight 80 g/m ² ), and the second bag sheet is polyethylene terephthalate nonwoven fabric (air through method, basis weight 30 g/m ² ), as shown in FIG. Thus, two heat generating elements obtained above are sandwiched between the two bag sheets, and the first bag sheet and the second bag sheet are joined together at the periphery and in the vicinity of the longitudinal center line to form the mask main body. It was created. Furthermore, the heating implements of Examples and Comparative Examples were obtained by joining non-woven fabric ear hooks to the mask main body on the outer surface of the first bag sheet. Each of the above operations was performed in an oxygen-free atmosphere.
In addition, openings and slits or notches were provided in the heating implements of Examples and Comparative Examples in the following manner so that the ear hooks have Da, Db, and Dc shown in Table 2. rice field.

・Example 1
As shown in FIG. 7, a point P3 is the outermost point of the ear hook portion 52L on the side joined to the first bag sheet, and a point P2 is a point 15 mm away from the point P3 inward along the X direction. bottom. Also, points P3 and P2 are on the Y-direction center line (vertical center line Y1) of the ear hook portion 52L. Next, the point P2 is the center of the small circle S1, and the radius of curvature of the small circle S1 is 1.5 mm. At the same time, a point P1 was defined as a point 50.5 mm away from the center (point P2) of the small circle S1 in a direction downward in the Y direction from the center of the small circle S1 and forming 20 degrees with the X direction. The point P1 is the center of the great circle S2, and the radius of curvature of the great circle S2 is set to 8 mm. That is, a part of the small circle S1 and the large circle S2 is aligned with a part of the opening (hole 54L). However, in FIG. 7, for convenience, the small circle S1 and the large circle S2 are designated as the openings (holes 54L) so that the dashed lines showing the small circles S1 and large circles S2 do not overlap the solid lines showing the openings (holes 54L). It is shown slightly smaller on the inside. The inclination of the straight line connecting the center of the small circle S1 (point P2) and the center of the large circle S2 (point P1) coincides with the La direction. A slit 31 of 2.5 cm is provided in a direction perpendicular to the maximum length direction of the opening (hole 54L) from the lower outer edge of the ear hooking portion 52L to the opening (hole 54L).
Similarly, the ear hooking portion 52R was also provided with openings and slits so as to be bilaterally symmetrical, thereby producing a heating tool.

・Example 2
An opening similar to that of Example 1 is formed at a position where the opening of Example 1 is translated downward by 2 mm along the Y direction, and the above-described opening is formed from the outer edge of the lower side of the ear hook toward the opening. A 2.4 cm slit was provided in a direction perpendicular to the maximum length direction of the opening to prepare a heating tool.

・Example 3
A heating device with ear hooks was produced in the same manner as in Example 1, except that a substantially triangular notch was provided instead of the slit of Example 1.
Specifically, Dc shown in FIG. 6 was set to 1.8 mm, and a substantially triangular notch was formed with the outer edge of the lower side of the ear hook as the base. The approximate triangle had a vertex at a height of 2.5 mm from the intersection with the lower outer edge of the ear hook on a line orthogonal to the La direction, and had a size of 1.9 cm ² .

・Comparative example 1
A heating tool was produced in the same manner as in Example 1, except that the radii of curvature of the small and large circles of Example 1 were changed to 4.5 mm and 11 mm, respectively, and no slit was provided.

・Comparative example 2
A heating device was produced in the same manner as in Example 1, except that the length of the slit in Example 1 was changed to 2 mm and Dc was changed to that shown in Table 2.

・Comparative example 3
An opening similar to that of Example 1 was formed at a position where the opening of Example 1 was translated upward by 2 mm along the Y direction. In addition, Dc shown in FIG. 6 was set to 4 mm, and a substantially triangular notch was formed with the outer edge of the lower side of the ear hook as the base. The apex of the approximate triangle was 2 mm in height from the intersection with the lower outer edge of the ear hook on a line orthogonal to the La direction, and the size was 2 cm ² .

・Comparative example 4
An opening similar to that of Example 1 was formed at a position where the opening of Example 1 was translated downward by 8 mm along the Y direction. In addition, Dc shown in FIG. 6 was set to 4 mm, and a substantially triangular notch was formed with the outer edge of the lower side of the ear hook as the base. The approximate triangle has a vertex at a height of 1.95 mm from the intersection with the lower outer edge of the ear hook on a line orthogonal to the La direction, and has a size of 2 cm ² .

The following evaluations were performed using the obtained heating tools. Table 2 shows the results.

(evaluation)

- Stretchability of ear hooks First, a pair of ear hooks were separated from the heating tool. If the mask body and the ear hook are integrated (one continuous sheet), cut off 5 mm inside from the apex of the arc on the base end side of the hole. Next, using one of the ear hooks, both ends of the ear hook in the La direction are pinched with a chuck using the following device, and stress is applied to stretch 100% in the La direction at a speed of 300 mm / min. After that, the stress was released to return the ear hook to its original state, and the load (N) with respect to the stretched length was measured. The sample width was 80±10 mm, and the chuck interval was adjusted to 55±15 mm.
Device name: "Tensilon universal testing machine"
Manufacturer: "Orientec Co., Ltd."

-Sensory evaluation Twenty-one skilled panelists wore each heating device at bedtime, evaluated according to the following criteria, and calculated the average value of the twenty-one panelists. A higher value indicates a better result.
[Feeling of fit]
5: Good fit 4: Somewhat good fit 3: Fit 2: Slightly fit 1: Almost no fit [no feeling of pressure]
5: No feeling of pressure at all 4: Almost no feeling of pressure 3: No feeling of pressure 2: Somewhat feeling of pressure 1: Feeling of pressure [warm feeling around the eyes]
5: Sufficient warming around the eyes 4: Slightly warming around the eyes 3: Warming around the eyes 2: Slightly insufficient warming around the eyes 1: Around the eyes There is no feeling of warmth [feeling of whole-body relaxation]
5: Full body relaxation 4: Full body relaxation 3: Full body relaxation 2: Full body relaxation 1: No full body relaxation

Each of the heating devices prepared in Example 1 and Comparative Example 1 was worn in a lateral recumbent position for 10 minutes under a room temperature environment (20° C., 55%). The skin temperature of the face immediately after removing the heating device was measured using a thermostat.
The area of 38° ^C. or higher was calculated by image analysis ^.

10 Exothermic part 20 Container 31 Slit 32 Slit 41 Notch 50 Heating device 51 Mask main body 52 Ear hooking part 52L Ear hooking part 52R Ear hooking part 53 Bag body 54 Hole 54L Hole 54R Hole 57 Notch part 61 Heating tool 100 Heating element 201 First container sheet 202 Second container sheet 203 Peripheral edge 531 First bag sheet 532 Second bag sheet 571 Notch 572 Notch X Longitudinal direction Y Width direction

Claims (7)

A mask body that covers both eyes, a heating element provided in the mask body, and a pair of ear hooks that are joined to both ends of the mask body in the longitudinal direction and held by the mask body so as to cover both eyes of the wearer. and
the ear hook portion has a slit extending from the lower outer edge of the ear hook portion toward the opening;
A mask that satisfies the following conditions:
(conditions)
the ear hook portion has an ear hook opening,
In a direction perpendicular to the maximum length direction of the opening, Da (cm) is the minimum width of the portion of the ear hook that is positioned above the opening, and the opening of the ear hook is Da (cm). When the minimum value of the width of the portion located below the portion is Db (cm), Da/Db is 1.3 or more and 15.0 or less,
Dc (cm) is the length of the outer edge from the intersection of the straight line including Db and the lower outer edge of the ear hook to the joint between the ear hook and the mask main body. At this time, Dc is 1 cm or more and 4.5 cm or less. 2. The mask according to claim 1, wherein Db is 0.3 cm or more and less than 2.0 cm. 3. The mask according to claim 1 , wherein said slits are plural. 4. The mask according to any one of claims 1 to 3 , wherein the stress when the ear hooking portion is stretched 100% in the maximum length direction is 10 N or less. 5. The mask according to any one of claims 1 to 4 , wherein the ear hooking portion is a non-woven fabric. 6. The mask according to any one of claims 1 to 5 , wherein said heating element generates water vapor through an oxidation reaction of an oxidizable metal. 7. The mask according to any one of claims 1 to 6 , wherein the heating elements are in pairs and are arranged so that both eyes are covered by each.

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