WO2019131480A1

WO2019131480A1 - Mask

Info

Publication number: WO2019131480A1
Application number: PCT/JP2018/047173
Authority: WO
Inventors: 貞儒陳
Original assignee: 花王株式会社
Priority date: 2017-12-28
Filing date: 2018-12-21
Publication date: 2019-07-04
Also published as: CN214415013U; JP2019118811A; JP7126440B2; TW201929797A; TWI785176B

Abstract

A heating tool (50) is provided with a mask main body (51) covering both eyes, a heating element (100) provided to the mask main body (51), and a pair of ear hooks (52L, 52R) that are joined respectively to both longitudinal ends of the mask main body (51) and hold the mask main body (51) so as to cover both eyes of the wearer, the heating tool (50) fulfilling the following conditions. (Conditions) (i) The ear hooks (52) have holes (54) for hooking over the ear, and the relationship (La × 2 + Lb) < 285 is satisfied, where La (mm) is the maximum length of the hole (54), and Lb (mm) is the length from the end portion on the mask-main-body (51) side at La (mm) of one hole (54) to the end portion on the mask-main-body (51) side at La (mm) of the other hole (54); (ii) the stress (N) when the mask main body (51) is extended 4 cm in the longitudinal direction is less than 70 N; and (iii) the change in stress in the La direction of the ear hooks (52), represented by formula (1), is 35% or higher. Formula (1): Change in stress (%) = {[stress at 100% extension (N)] – [stress at 10% return extension (N)]/stress at 100% extension (N)} x 100

Description

mask

The present invention relates to a mask.

In recent years, the functions of masks covering eyes and eyes have diversified, and various masks have been developed. For example, an eye mask type heating tool in which a heating element utilizing oxidation heat generated by an oxidation reaction of an oxidizable metal is accommodated is used. The eye mask type heating tool is widely used because it is used by warming the eyes of the wearer with a heating element and by using a pair of ear hooks on the left and right ears and is lightweight and easily used.

On the other hand, expectations for eye masks are increasing. For example, in Patent Document 1, an eye mask type in which the position of the ear hook connecting portion, the shape of the opening, the slit, and the like are specified from the viewpoint of easily putting the ear hook on the ear and fitting the mask body to the face. A heating tool is disclosed.

JP 2008-295779 A

The present invention is a pair of a mask main body covering both eyes, a heating element provided on the mask main body, and both ends of the mask main body in the longitudinal direction and holding the mask main body so as to cover both eyes of the wearer. Providing a mask that meets the following conditions.
(conditions)
(I) The ear hooking portion has an opening for ear hooking, and the maximum length of the opening is La (mm), and the end on the mask main body side in La (mm) of the one opening is (La × 2 + Lb) <285, where Lb (mm) is the length from the other relevant opening to La (mm) to the end on the mask main body side,
(Ii) the stress when the mask body is elongated by 4 cm in the longitudinal direction is less than 70 N,
(Iii) The stress change rate in the La direction of the ear hook portion represented by the following formula (1) is 35% or more.
Stress change rate (%) = {[100% elongation stress (N)]-[10% return elongation stress (N)] / 100% elongation stress (N)} × 100 (1)

The objects described above, and other objects, features and advantages will become more apparent from the preferred embodiments described below and the following drawings associated therewith.

It is the top view which showed typically the state which opened the ear hook part of the heating implement which concerns on embodiment. It is the top view which showed typically the state before opening the ear hook part of the heating implement which concerns on embodiment. It is a disassembled perspective view of the heating implement shown in FIG. It is the top view which showed the heat generating body which concerns on embodiment typically. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which showed typically the heat generating body which concerns on embodiment. It is a top view which shows the modification of the hole of the ear hook part of a heating implement.

In recent years, the usage of the eye mask type heating tool has diversified, and not only a mode in which the wearer raises and uses the body, but also a mode in which it is supine or even in the lateral position has been produced. Therefore, in the conventional eye mask type heating tool as disclosed in Patent Document 1, when used in the lateral recumbent position, the mask is laterally displaced, and a gap is formed between the mask and the wearer, and the mask inherently has A new problem has arisen that the warming effect can not be obtained sufficiently. Specifically, due to the rigidity of the heat generating element housed in the heating tool, it is difficult for the mask to adhere closely along the shape of the wearer's eyes to the periphery of the nose, and when the wearer turns sideways, A gap was likely to occur between it and the mask.

Here, in order to suppress the lateral shift of the eye mask type heating tool, for example, when the length in the width direction of the mask is shortened and the mask is adhered to the face of the wearer without special measures. The stress caused by the ear hooks tends to be high at the part where the ear hooks of the wearer are worn and at the back of the ears, causing a feeling of pressure.
Therefore, even if the present inventor reduces the length in the width direction of the mask more than the conventional one, while reducing the feeling of oppression at the part where the ear hooks are attached and at the back of the ear, the mask is displaced even in the lateral recumbent position. We carefully studied from the viewpoint of suppressing the skin, and when wearing a mask, it takes by firmly holding the area around the wearer's eyelids, while keeping the area from the back of the wearer's eyes to the ear lobe We found that it is possible to reduce oppressive sensation while effectively suppressing lateral displacement of the mask and improving the fit. And as a result of advancing examination further from a viewpoint of solving a subject that a wide range is warmed uniformly also in a lateral recumbent position while obtaining a good balance of a feeling of fit and a feeling of oppression in a mask, the condition of the mask is specific It has been found that satisfying the above is effective as a guideline for solving the problem, and the present invention has been completed.

According to the present invention, it is possible to provide a mask capable of obtaining a good balance between the fit and the pressure. In addition, the mask of the present invention warms a wider range than in the prior art, and a uniform warmth can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are denoted by the same reference numerals, and the description thereof will be appropriately omitted. In the following, the case of a so-called eye mask type heating tool as the mask of the present invention will be described.

[Heating tool]
First, an example of the heating tool 50 according to the present embodiment will be described based on FIG. 1 to FIG.
The heating tool 50 according to the present embodiment is of the eye mask type, and is heated to a predetermined temperature from a pair of heating elements 100 provided on the mask main body 51 to cover both eyes of the wearer with the mask main body 51 Water vapor to the eye and its surroundings.

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

The heating tool 50 is worn such that the ear hooks 52 are hooked on the wearer's ears and the mask body 51 covers both eyes of the wearer. Under this wearing condition, the heat vapor generated from the heat generating element 100 described later is applied to the eyes of the wearer.

FIG. 2 is a plan view schematically showing a state before the ear hook portion 52 of the heating implement 50 is opened. In the same figure, the pair of ear hooks 52 are folded toward each other toward the inside of the heating tool 50 and are joined to each other at the longitudinal center of the mask main body 51. Perforated or half-cut grooves are provided in the joined area. That is, a perforation or a half cut groove is provided so as to bisect a pair of ear hooks 52 formed in series, and the ear hook 52L and the ear hooks 52R by the wearer cutting it off. And will be obtained. After that, the state shown in FIG. 1 can be obtained by inverting the ear hook portion 52L and the ear hook portion 52R outward. That is, the ear hooks 52 are developed obliquely downward from the vicinity of both end portions in the longitudinal direction of the mask main body 51. As shown in FIG. 1, when the ear hook portion 52 is opened outward from the mask main body portion 51, the ear hook portion 52 has a V shape in plan view. In addition, when the ear hooks 52 are opened outward from the mask main body 51, the holes 52 extend obliquely downward with respect to the longitudinal direction of the mask main body 51.
By taking such an arrangement, the mask body 51 can be more easily fitted to the face when worn.

FIG. 3 is an exploded perspective view of the heating tool 50 shown in FIG. As shown in FIG. 3, the mask main body 51 is configured of a bag 53, and a pair of heat generating members 100 is provided inside the bag 53.

The mask main body 51 has a laterally long shape having a longitudinal direction X and a width direction Y orthogonal to the longitudinal direction X, and is substantially symmetrical in left and right. Further, the mask main body 51 is made of a flexible sheet, and has extensibility as described later. Also, the main body portion 51 may or may not have stretchability, but from the viewpoint of firmly holding the heating tool 50 near the eyebrows and making the fit feeling stronger, one having stretchability Is preferred.

The bag 53 constituting the mask main body 51 includes a first bag sheet 531 located closer to the skin surface of the wearer and a second bag sheet 532 located farther from the skin surface of the wearer. Have. Here, a first bag sheet 531 and a second bag sheet 532 are provided so as to sandwich the heating element 100 described later.

The first bag sheet 531 and the second bag sheet 532 have the same shape and have a substantially oval shape. The outer shapes of the first bag sheet 531 and the second bag sheet 532 form the outer shape of the mask main body 51. The first bag sheet 531 and the second bag sheet 532 overlap them, and at least a part of their peripheral portions are joined, and the central portion in the Y direction is joined along the X direction, whereby the bag 53 is formed. It becomes. In order to join the first bag sheet 531 and the second bag sheet 532, for example, a hot melt adhesive can be used. In addition, the heat generating body 100 may be fixed to the bag body 53 by an adhesive agent, a heat seal, or the like.

The first bag sheet 531 and the second bag sheet 532 may be any sheet having extensibility and capable of supplying air to the heat generating element 100 inside, for example, a fiber sheet including non-woven fabric It can be used. For example, one or more selected from needle punched non-woven fabrics, air-through non-woven fabrics and spun-bonded non-woven fabrics can be used.

The bag body 53 has a substantially V-shaped notch portion 57 (notch portion 571; notch portion cut inward from the long side along the X direction at a central portion of the two long sides extending in the Y direction). 572) are respectively formed. The notch 571 and the notch 572 have different degrees of cutting. The notch 571 is located between or near the wearer's groin when the heating implement 50 is attached. The notch 572 is located on the bridge of the wearer's nose when the heating implement 50 is attached. Therefore, in general, the notch 572 has a greater degree of cutting than the notch 571.
Furthermore, as shown in FIG. 1, in the bag 53, a slit connected to the notch 572 extends from the lower end of the bag 53 in the central part of the bag 53 and in the region separating the heating element 100. There is.

The ear hooks 52 of the heating implement 50 are disposed on the first bag sheet 531 before use, as shown in FIG. In the state before use, that is, in the state where 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. It is almost the same as

The ear hooks 52 have a function to hold the heating implement 50 on the wearer's face.
The ear hooks 52 are used as a pair, and the ear hooks 52 L and the ear hooks 52 R are attached to respective ends in the longitudinal direction (X direction) of the mask main body 51. More specifically, in the ear hook portion 52, when the mask main body 51 side is a base end and the side far from the mask main body portion 51 is a tip end, a region on the base end side of the ear hook portion 52; The sheet on the wearer's side (first bag sheet 531) is joined.
Each of the ear hooks 52L and the ear hooks 52R has a bonding area overlapping with the mask main body 51.

It is preferable that the ear hooks 52 have extensibility in the width direction.
The ear hooks 52 may be formed of a single-layer sheet or may be a laminate of a plurality of sheets. As the ear hook portion 52, a fiber sheet made of a fiber material such as non-woven fabric can be used. The ear hooks 52 may be made of the same material as that of the bag 53 described above, or may be made of a different material.

The planar shape of the pair of ear hooks 52 is not particularly limited, but is the same as 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 at the longitudinal center line. Is preferred. For example, a substantially square shape can be mentioned.

The hole 54 is a hole for putting the ear hook 52 on the ear of the wearer, and is an opening passing through the ear hook 52. The hole 54 is provided substantially at the center of the ear hook 52. Further, the hole 54 is formed in a region excluding a bonding region where the mask main body 51 and the ear hook 52 are bonded.

The shape of the hole 54 is not particularly limited, but in FIGS. 1 and 2, the hole 54 is elongated in the lateral width direction, and has a rounded, substantially triangular shape (drop shape) spreading from the proximal end to the distal end of the ear hook 52 ing. Also, the holes 54 may or may not be vertically symmetrical. That is, the curvature radius may be the same or different at the top and bottom.
Further, when the ear hooking portion 52 is opened outward from the mask main body 51, the hole 54 extends downward and is inclined with respect to the longitudinal direction of the mask main body 51.

[Heating element]
Below, the heat generating body 100 with which the heating implement 50 is equipped is demonstrated. In the present embodiment, the pair of heating elements 100 is disposed in the heating tool 50, and each heating element 100 covers the eyes of the wearer.

The planar shape of the heating element 100 is substantially square. The rigidity of the heat generating body 100 is larger than the rigidity of the mask main body 51, and the entire heat generating body 100 is less likely to expand and contract than the mask main body 51.

FIG. 4 is a plan view showing an example of the heat generating body 100 of the present embodiment. 5 is a cross-sectional view taken along the line AA of FIG. The heat generating body 100 of the present embodiment includes a heat generating portion 10 and a container 20 for containing the heat generating portion 10.

The heat generating portion 10 includes an oxidizable metal, a carbon component, a water absorbing agent, water, a reaction accelerator, and the like.
Specifically, the heat generating portion 10 generates heat by the oxidation reaction of the oxidizable metal to impart a thermal effect, and has a heat generating temperature of 30 ° C. to 70 ° C. in the measurement according to JIS S4100. Can be used. Further, the heat generating portion 10 has an effect of generating water vapor by heating the contained water.

The oxidizable metal is a metal that generates heat of oxidation reaction, and examples thereof 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 a water holding ability, an oxygen supplying ability, and a catalytic ability, and may use, for example, one or more materials selected from the group consisting of activated carbon, carbon black, acetylene black, and graphite. it can.

In the heat generating portion 10, a water absorbing agent can be contained in order to hold moisture and efficiently advance the oxidation reaction of the oxidizable metal. As the water absorbing agent, a polymer having water absorbency or a powder having water absorbency can be used.

In the embodiment, the heat generating portion 10 is in the form of a sheet, but the heat generating portion 10 may be in the form of powder or in the form of a sheet. However, it is preferable to be in the form of a sheet from the viewpoint of being excellent in the feeling in use.
Such a sheet-like heat generating body can be obtained by any method such as a method of forming with a fiber, a method of coating, a method of compacting with a press 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. Further, 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 the handleability.
By making thickness of exothermic part 10 into the above-mentioned range, it can be made a size which is easy to use exothermic body 100, raising a heating effect. In addition, since the heat generating portion 10 has appropriate rigidity, the fit feeling can be felt more strongly when the mask is attached.
The thickness of the heat generating portion 10 indicates an average thickness.

Then, the container 20 which comprises the heat generating body 100 is demonstrated.
The container 20 is at least partially air-permeable and accommodates the heat generating portion 10. For example, as shown in FIG. 5, the housing 20 can be configured by bonding the peripheral portions 203 of two sheets (the first housing sheet 201 and the second housing 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 a thing.
When the heating tool 50 supplies water vapor to the eyes or skin, it is preferable that the first container sheet 201 be a highly air permeable sheet, from the viewpoint of efficiently supplying the water vapor to the eyes or skin of a person, On the other hand, the second container sheet 202 is preferably a sheet having poor air permeability. That is, the air permeability of the second container sheet 202 is more preferably poorer in air permeability than the first container sheet 201, and is more preferably non-aerated.

When the heat generating portion 10 has a heat generating function by oxidation of the metal to be oxidized, the first container sheet 201 and the second container as described above in order to efficiently apply water vapor to the eyes and skin by the heating tool 50 When the air permeability of the sheet is adjusted, in the heat generating unit 10, air is preferentially taken in from the side of the first accommodation sheet 201, and the exothermic reaction is advanced. Therefore, the balance of the first accommodation sheet 201 is preferably 3,000 to 6,000 seconds / 100 ml, in order to balance the feeling of fit and the exothermic reaction and to heat the eyes or the skin appropriately. It is more preferable that 6,0006000 seconds / 100 ml.

In addition, "air permeability" is a value measured by JISP8117, and it is defined by the time when 100 ml of air passes an area of 6.45 cm ² under a constant pressure.

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

As the second container sheet 202, a material substantially impermeable to oxygen can be used, and examples thereof include polyethylene, polyolefin such as polybutadiene, polyvinyl chloride, polyvinylidene chloride, polyester, polyether, polysulfone and polyamide. 1 type or 2 types or more can be used.

In addition, since the heating tool 50 of this embodiment has the to-be-oxidized metal oxidized with oxygen, it is enclosed with an oxygen blocking bag and normally stored.

The heating tool 50 according to the present embodiment is joined to both the mask main body 51 covering both eyes, the heating element 100 provided on the mask main body 51, and both ends of the mask main body 51 in the longitudinal direction. And a pair of ear hooks 52 (52L, 52R) for holding so as to cover the eyes of the wearer, and the following conditions are met.
(conditions)
(I) The ear hook portion 52 has a hole 54 for hooking an ear, and the maximum length of the hole 54 is La (mm), from the end of the one hole 54 on the mask main body 51 side in La (mm) When the length of La (mm) of the other hole 54 to the end on the mask main body 51 side is Lb (mm), (La × 2 + Lb) <285,
(Ii) The stress (N) when the mask body 51 is elongated by 4 cm in the longitudinal direction is less than 70 N,
(Iii) The stress change rate in the La direction of the ear hook portion 52 represented by the following formula (1) is 35% or more.
Stress change rate (%) = {[100% elongation stress (N)]-[10% return elongation stress (N)] / 100% elongation stress (N)} × 100 (1)

In the condition (i), La (mm) which is the maximum length of the hole 54 is a length when no load is applied to the ear hook portion 52 in the state before using the heating tool 50. In the heating tool 50, as shown in FIGS. 1 and 2, the hole 54 is arc-shaped at both ends in the X direction, and a straight line connecting the deepest points of the arc is La (mm). When La in the hole 54L is different from La in the hole 54R, La of the hole 54 is an average value of the two.
When the ear hook portion 52 has a slit connected to the hole 54, the slit does not include the maximum length in La.
Further, as shown in FIG. 6, when the shape of the hole 54 is a teardrop shape with the apex on the mask main body 51 side, the apex of the hole 54 on the mask main body 51 side and the mask main body of the hole 54 A straight line connecting the top of 51 and the opposite side is La (mm).
Furthermore, when the hole 54 of the ear hook portion 52 is a slit (for example, a T-shaped cut) having no opening area for passing an ear, the maximum length of the slit is La (mm).
The lower limit value of La (mm) is preferably 25 (mm) or more, and more preferably 35 (mm) or more, from the viewpoints of making the ear hook portion 52 easy to put on the user's ear and reducing pressure feeling. It is more preferably 45 (mm) or more, and even more preferably 50 (mm) or more.
On the other hand, the upper limit value of La (mm) is preferably 90 (mm) from the viewpoint of suppressing an uncomfortable feeling that the ear hook portion 52 is too long and the ear is not appropriately worn and that the thermal tool 50 has a good fit. Or less, more preferably 80 (mm) or less, still more preferably 70 (mm) or less, and even more preferably 65 (mm) or less.

Further, a length Lb (mm) from an end of the one hole 54L at La (mm) on the mask main body 51 side to an end of the other hole 54R at La (mm) at the mask main body 51 side is It is a length measured in a state where the pair of ear hooks 52 is expanded and the entire heating implement 50 is flattened. As shown in FIG. 1, in the heating tool 50, Lb is the shortest distance between the

holes

54L and 54R. In other words, the length is between the apex of the arc on the proximal side of the hole 54L and the apex of the arc on the proximal side of the hole 54R.
In addition, when the hole 54 of the ear hook portion 52 is a slit (for example, a T-shaped notch) which does not have an opening area for passing the ear, an end portion on the proximal end side of one slit and the other slit Between the proximal end of the
The lower limit value of Lb (mm) is preferably 110 (mm) or more, more preferably 120 (mm) or more, and still more preferably 130 (mm) or more from the viewpoint of sufficiently covering both eyes of the user. is there.
On the other hand, the upper limit of Lb (mm) is preferably 230 (mm) or less, more preferably 200 (mm) or less, and still more preferably 180 (mm), from the viewpoint of making the fit of the heating tool 50 good. mm) or less.

Further, the mask main body 51 and the ear hooking portion 52 may be integrated (a single continuous sheet).

The heating tool 50 satisfies (La × 2 + Lb) <285 under the condition (i). This facilitates fitting the heating implement 50 to the wearer properly. (La x 2 + Lb) (mm) corresponds to the length from the back of the wearer's ear to the back of the other when the heating tool 50 is worn, and by appropriately controlling the length of the heating tool 50 Intended to be able to have a good fit. (La × 2 + Lb) (mm) may be smaller than 285 and is preferably 280 or less from the viewpoint of improving the fit. On the other hand, (La × 2 + Lb) (mm) is preferably 250 or more, and more preferably 260 or more, 265 or more, 270 or more in order to reduce the feeling of pressure.

In the condition (ii), the longitudinal direction of the mask main body 51 is the X direction shown in FIG. The stress (N) when the mask main body 51 is elongated by 4 cm in the longitudinal direction is a stress that occurs in the pulling direction when the wearer wears the heating tool 50, and as it becomes smaller, the mask main body 51 becomes easier to stretch It is intended that the feeling of pressure can be reduced. In the heating tool 50, the stress (N) when the mask body 51 is elongated by 4 cm in the longitudinal direction is less than 70 N, preferably 50 N or less, more preferably 45 N or less, 35 N or less Is more preferable, and 30 N or less is even more preferable. As a result, the mask main body 51 can be made extensible, and the pressure in the vicinity of the heel of the wearer can be easily increased while reducing the feeling of pressure in the portion where the ear hook 52 is attached and in the back of the ear. Thereby, the lateral shift of the heating tool 50 can be effectively suppressed. As a result, it is possible to warm the eyes uniformly, and furthermore, since it is possible to feel the warmth over a wider range, it is also easy to obtain a relaxed feeling of the whole body.
On the other hand, the lower limit value of the stress is not particularly limited, but from the viewpoint of improving the handleability of the heating tool 50 and obtaining rigidity and strength, it is preferable that it is 10 N or more, and more preferably 15 N or more Preferably, it is more preferably 20 N or more.
When the elongation in the longitudinal direction of the mask body 51 is less than 4 cm, the stress (N) when the mask body 51 is elongated by 2 cm in the longitudinal direction is preferably less than 30 N, and is 26 N or less More preferably, it is more preferably 24N or less.
The extension of the mask main body 51 by 4 cm in the longitudinal direction is intended to extend the region of the mask main body 51 excluding the heating element 100, and the extension of the bag 53 in the longitudinal direction by 4 cm is substantially the same. equal. The expansion rate corresponds to about 50% of the mask main body 51 on the premise that the condition (i) is satisfied.
Further, in the heating tool 50 of the present embodiment, since the mask main body 51 has the notches 57 at the longitudinal center, when extending in the longitudinal direction, a load is applied to the notches 57 and the stress in the mask main body 51 There are cases where it can not be measured properly. Therefore, it is appropriate to perform measurement using one side of the mask main body 51 divided into two in the lateral direction and divided into two equally.

In the condition (iii), the La direction of the ear hook portion 52 is the longitudinal direction of La shown in FIG. Further, the La direction of the ear hook portion 52 is preferably a direction in which the ear hook portion 52 is easily extended, but is not limited to being parallel to the X direction.
The stress change rate represented by the above equation (1) is the stress at which the ear hook 52 tries to return to the original position after one of the ear hooks 52 is stretched in the La direction. It means the degree. That is, the higher the stress generated when the ear hook portion 52 is extended 100% and then returned 10%, the higher the stress to return to the original position of the ear hook portion 52, the lower the rate of change in stress. Become. In other words, the higher the stress change rate, the lower the stress that the ear hook 52 once tries to return to its original position becomes, and as a result, the part on which the ear hook 52 of the wearer is attached You can reduce the pressure on your body. Also, on the other hand, by combining with the conditions (i) and (ii), a good fit can be obtained.
When the stress change rate is different between the ear hook portion 52L and the ear hook portion 52R, the stress change rate is an average value of the both.
In the heating tool 50, by setting the stress change rate to 35% or more, the recovery from the extension of the ear hook portion 52 becomes low, and it is easy to reduce the feeling of pressure on the part on which the ear hook portion 52 is attached Become. Further, from the viewpoint of improving the feeling of fit due to synergy with the conditions (i) and (ii), the stress change rate is preferably 40% or more, more preferably 50% or more, and still more preferably 60%. It is above. On the other hand, from the viewpoint of maintaining a feeling of fit, the stress change rate is preferably 80% or less, more preferably 75% or less, and still more preferably 72% or less.
In addition, the said stress change rate (%) of the ear hook part 52 is controlled by the material which comprises the ear hook part 52, the external shape of the ear hook part 52, specifically, the presence or absence of the slit from an outer edge etc., etc. be able to.

Moreover, when the elongation in the La direction of the ear hook portion 52 is less than 100%, the 50% stress change rate represented by the following formula (2) is 35% or more, and the portion to which the ear hook portion is attached It makes it easier to reduce the feeling of pressure on the back of your ear. From the same point of view, the 50% stress change rate is preferably 40% or more, more preferably 45% or more. On the other hand, from the viewpoint of maintaining a feeling of fit, the stress change rate is preferably 60% or less, more preferably 50% or less.
50% stress change rate (%) = {[stress at 50% elongation (N)]-[5% return stress at elongation (N)] / 50% stress at elongation (N)} × 100 (2)

In the present embodiment, the stress (N) at the time of extension of the mask main body 51 and the ear hook 52 can be measured by a method with reference to JIS L1913.
When the sample is the mask main body 51, the sample width is 80 ± 10 mm, the initial length of the sample in the tensile tester is set to 80 ± 10 mm, and the length of the mask main body 51 is 300 mm / min. Measure the tensile strength when stretched 4 cm in the direction.
If the sample is the ear hook 52, set the sample width to 80 ± 10 mm, set the initial length of the sample in the tensile tester to 55 ± 15 mm, and set the specified length in the La direction at a tensile speed of 300 mm / min. Measure the tensile strength when stretching (100% elongation stress: 100% of initial length, 50% elongation stress: 50% of initial length) Do.
Specifically, this will be described later in the examples.

In addition, the stress (N) at 10% return extension in the ear hook portion 52 is 80 ± 10 mm for the sample width with reference to JIS L 1913, and the initial length for the sample is set to 55 ± 15 mm for the tensile tester. Then, 100% of the initial length is elongated in the La direction at a tensile speed of 300 mm / min, and then the tensile strength when returning a length corresponding to the initial length of 10% is measured. Similarly, the stress (N) at 5% return elongation is extended 50% of the initial length in the La direction under the same measurement conditions as the stress at 10% return extension described above, and then 5 of the initial length Measure the tensile strength when returning the length corresponding to%.

Here, in the eye mask type heating tool 50, even a slight gap tends to have a significant influence on the thermal effect, and in some cases, a large amount of oxygen may enter from the gap in a short time. , Excessive fever may occur. Therefore, a higher level of fit is required. On the other hand, since the feeling of fit and the feeling of compression are in a so-called trade-off relationship, it is important to appropriately control the balance of the load applied to the wearer in the entire heating implement 50.
In the heating tool 50 in the present embodiment, by satisfying all the above conditions (i) to (iii), the heating tool 50 can be in close contact in the vicinity of the heel of the wearer, and the fit can be improved. The load applied to the part on which the ear hook 52 of the wearer is attached and the back of the ear can be reduced, and a feeling of pressure can be suppressed. As a result, even in the lateral recumbent position, the positional deviation of the heating tool 50 can be effectively suppressed, and the heating effect of the heating tool 50 can be sufficiently obtained. Moreover, with the improvement of the fit, a more uniform thermal effect can be obtained in the entire heating tool 50. Furthermore, according to the heating tool 50, it is possible to feel a warm feeling in a wider range and to easily obtain a relaxed feeling of the whole body by suppressing the positional deviation of the eyes.

Furthermore, the heating tool 50 can obtain a good thermal effect while improving the balance between the feeling of fit and the feeling of compression more effectively by providing the following configuration.

In the heating tool 50, Lc / (La × 2 + Lb) is 0.2 or more and 0.4 or less, where Lc (mm) is the length in the widthwise center of the mask main body 51 in the longitudinal direction. preferable. That is, by controlling the length in the longitudinal direction and the lateral width direction of the heating tool 50, the heating tool 50 can be easily fitted in the vicinity of the heel of the wearer.
In the heating tool 50 of the present embodiment, Lc is the length of the vertical center line of the mask main body 51 excluding the slit, as shown in FIG.
The lower limit value of Lc (mm) is preferably 50 (mm) or more, more preferably 60 (mm) or more, and still more preferably 70 (mm) or more from the viewpoint of sufficiently covering both eyes of the user. is there.
On the other hand, the upper limit value of Lc (mm) is preferably 180 (mm) or less, more preferably 150 (mm) or less, from the viewpoint of improving the fit of the heating tool 50 and reducing the rattling feeling. More preferably, it is 110 (mm) or less, and further preferably, 100 (mm) or less.

In the heating implement 50, the stress (N) at 100% elongation in the La direction in the ear hook portion 52 is preferably 2 or more, more preferably 3 or more, and still more preferably 3.5 or more. As a result, the ear hook portion 52 can be easily extended at the time of use, and the ear hook portion 52 can be easily put on the ear, and the feeling of pressure on the part on which the ear hook portion 52 is attached and the back of the ear is easily suppressed.
On the other hand, the upper limit value of the stress (N) at 100% elongation in the La direction in the ear hook portion 52 is not particularly limited, but the ear hook portion 52 is easily extended during use and the ear hook portion 52 is easy to put on the ear 15 or less is preferable and 10 or less is more preferable from a viewpoint of doing, ie, a viewpoint of reducing a feeling of oppression.

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

The present invention further discloses the following masks, applications, etc. regarding the embodiment described above. The mask of the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.
In the above embodiment, although the heating element 100 by the redox reaction has been described as the function of the mask, the invention is not limited thereto, and heating may be performed by other methods, and heat retention, moisture retention, cold retention, rapid cooling, light shielding , Fragrance, antibacterial, pressing and dustproof functions, etc. As a specific mask, in addition to a mask having a vapor heating function such as a heating tool 50, for example, (1) a light blocking member is used to have a sleeping mask for blocking light and (2) a heat retaining function. The mask can be warmed by heating the mask with a heater such as a microwave oven using a member, (3) A cooling member such as a cold insulator or a cooling agent and a heat generating function are combined, and the eye is heated and heated (4) A member with a scent component is used together with a heating element, a mask giving a relaxing effect, (5) A mask that provides a feeling of pressure and produces a finger pressure effect, including beads and spheres ( 6) It is possible to change to a mask or the like that produces a massage effect by vibrating with electricity or the like.

Hereinafter, an example of the reference form of this invention is shown.
<1> A pair of a mask main body covering both eyes, a heating element provided on the mask main body, and both ends in the longitudinal direction of the mask main body and holding the mask main body so as to cover both eyes of the wearer The ear hook part, and the mask which fulfills the following conditions.
(conditions)
(I) The ear hooking portion has an opening for ear hooking, and the maximum length of the opening is La (mm), and the end on the mask main body side in La (mm) of the one opening is (La × 2 + Lb) <285, where Lb (mm) is the length from the other relevant opening to La (mm) to the end on the mask main body side,
(Ii) the stress when the mask body is elongated by 4 cm in the longitudinal direction is less than 70 N,
(Iii) The stress change rate in the La direction of the ear hook portion represented by the following formula (1) is 35% or more.
Stress change rate (%) = {[100% elongation stress (N)]-[10% return elongation stress (N)] / 100% elongation stress (N)} × 100 (1)
When the length in the short direction at the center in the longitudinal direction of the mask main body is Lc (mm),
The mask as described in <1> whose Lc / (La * 2 + Lb) is 0.2 or more and 0.4 or less.
The mask as described in <1> or <2> whose stress (N) at the time of 100% expansion | extension in the said La direction of the <3> said ear hook part is two or more.
The mask in any one of <1> thru | or <3> whose <4> above-mentioned ear hook part is a nonwoven fabric.
The mask in any one of <1> thru | or <4> which is 10 N or more and less than 70 N in stress when the <5> said mask main body is extended 4 cm to a longitudinal direction.
<6> The mask according to any one of <1> to <5>, wherein a stress when the mask body is elongated by 2 cm in the longitudinal direction is less than 30 N.
The stress change rate in the La direction of the ear hook portion represented by the above formula (1) is preferably 35% to 80%, and more preferably 40% to 80%. The mask according to any one of <1> to <6>, which is more preferably 50% or more and 75% or less.
The stress change rate in the La direction of the ear hook portion represented by the following formula (2) is preferably 35% to 60%, and more preferably 40% to 60%. The mask according to any one of <1> to <7>, more preferably 45% or more and 50% or less.
Stress change rate (%) = {[stress at 50% elongation (N)]-[5% return stress at elongation (N)] / 50% stress at elongation (N)} × 100 (2)
<9> The mask according to any one of <1> to <8>, wherein the ear hooks are developed obliquely downward from near both end portions in the longitudinal direction of the mask main body.
When the ear hook portion is opened outward from the mask main body, the ear hook portion has a V shape in plan view, according to any one of <1> to <9>. mask.
<11> When any one of the ear hooks is opened outward from the mask main body, the opening extends obliquely downward with respect to the longitudinal direction of the mask main body, in any one of <1> to <10> Description mask.
The mask in any one of <1> thru | or <11> whose <12> above-mentioned heat generating body is a sheet form.
<13> The mask according to any one of <1> to <12>, wherein the heating element is a heating element that generates water vapor by an oxidation reaction of an oxidizable metal.
The mask as described in <13> in which the <14> above-mentioned heat generating body is equipped with a heat-emitting part and the container which accommodates the said heat-generating part inside.
The mask as described in <14> in which the <15> above-mentioned exothermic part contains an oxidizable metal, a carbon component, a water absorption agent, and water.
The thickness of the <16> 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 on the other hand, preferably 5 mm or less, more preferably Is 3 mm or less, more preferably 2 mm or less, The mask as described in <14> or <15>.
<17> The container is composed of a first container sheet and a second container sheet, and the air permeability of the first container sheet is 3000 to 6000 seconds / 100 ml, and the second container The mask according to any one of <14> to <16>, wherein the body sheet is non-ventilated.
<18> The mask according to any one of <1> to <17>, wherein the heating elements are a pair and are disposed such that the eyes are covered by each.
The usage method of the mask which is used so that both eyes may be covered by the mask in any one of <19><1> thru | or <18>.

Hereinafter, the present invention will be described in more detail by way of examples. However, the scope of the present invention is not limited to such embodiments.

Example 1
In accordance with the following procedure, an eye mask type heating tool having a configuration shown in Table 2 was produced.

[Preparation of Heated Powder Water Dispersion]
Materials were prepared at the composition ratios shown in Table 1 and prepared in the following procedure. The xanthan gum was dissolved in water, and then tripotassium phosphate and potassium hydroxide were dissolved to prepare an aqueous solution. On the other hand, a powder prepared by pre-mixing iron powder and activated carbon is prepared, and the pre-mixed powder is put into the above aqueous solution and stirred for 10 minutes with a disc turbine type stirring blade at 150 rpm for 10 minutes. I got Sodium chloride was dispersed on the surface of a first water-absorbent sheet described later, and then dispersed on the coated surface.

[Fabrication of heat generating portion]
As the first water absorbing sheet, wood pulp paper (basis weight 20 g / m ² , manufactured by Ino Paper Co., Ltd.) and a water absorbing polymer (spherical, average particle diameter 300 μm, Aquaric CA, manufactured by Nippon Shokubai Co., Ltd., basis weight 70 g A polymer sheet (10 to 45 mass% of the maximum water absorption amount) absorbed by 1 / m ² ) and wood pulp paper (basic weight 30 g / m ² , Ino Paper Co., Ltd.) laminated and integrated A polyethylene laminated paper (manufactured by Knitk Co., Ltd.) wood pulp paper (basic weight 50 g / m ² , manufactured by Ino Paper Co., Ltd.) was used as the second water-absorbent sheet, using a permeability of 2 seconds / 100 ml).
A polymer sheet to be used as a first water absorbing sheet is prepared, and the heat-generating powder water dispersion prepared as described above is applied on the surface of a 25 cm ² (5 cm × 5 cm) first water absorbing sheet to a thickness of about 3 mm (coating amount 1.7 g And apply 0.009 g of sodium chloride (Japanese Pharmacopoeia sodium chloride: Tomita Seiyaku Co., Ltd.) on the coated surface, and coat the coated surface with a second water-absorbent sheet 25 cm ² (5 cm × 5 cm). The heat generating portion was produced.

[Preparation of heating element]
The first container sheet in the container was constituted of a porous stretched polyethylene moisture-permeable film (a permeability of 3,500 seconds according to JIS P8117) containing calcium carbonate. The second container sheet was made of a non-moisture permeable film made of polyethylene. A water absorbent paper (35 g / m ² basis weight) is laminated on one surface of the second container sheet, and one sheet of the sheet-like heat generating portion described above is interposed between the first container sheet and the second container sheet. The sheets were stacked so that the water absorbent paper turned outward, and the sheets were joined at the peripheral edge to obtain a rectangular heating element.

[Preparation of a heating tool]
The first bag sheet is a polypropylene non-woven fabric (needle punch method, basis weight 80 g / m ² ), and the second bag sheet is a polyethylene terephthalate non-woven fabric (air through method, basis weight 30 g / m ² ). As shown in FIG. 2, two heat generating members obtained above are sandwiched between both bag sheets, and the first bag sheet and the second bag sheet are joined together in the vicinity of the peripheral edge and the longitudinal center line, and a mask I created the body. Furthermore, the ear hooking portion was attached to the outer surface of the first bag sheet using a polypropylene non-woven fabric (SMS method, basis weight 40 g / m ² ) to obtain an eye mask type heating tool as shown in FIG. . In addition, the above each operation was performed in the atmosphere which oxygen does not exist. In addition, a downward slit (1.2 cm) extending in the longitudinal direction of the mask body from the vicinity of the outer end of the opening was provided.
La (mm), Lb (mm), and Lc (mm) in the obtained heating tool were as shown in Table 2.

Example 2
A heating tool was obtained in the same manner as in Example 1, except that the heating tool was prepared so that La (mm), Lb (mm), and Lc (mm) would be as shown in Table 2.

Example 3
A heating tool was prepared so that La (mm), Lb (mm), and Lc (mm) were as shown in Table 2, and the ear hooking portion was made of a polypropylene non-woven fabric (SMS method, basis weight 50 g / m ² A heating tool was obtained in the same manner as in Example 1 except that the above.

Example 4
A heating tool was obtained in the same manner as in Example 1, except that the heating tool was prepared so that La (mm), Lb (mm), and Lc (mm) would be as shown in Table 2.

Example 5
A heating tool was obtained in the same manner as in Example 1, except that the heating tool was prepared so that La (mm), Lb (mm), and Lc (mm) would be as shown in Table 2.

Example 6
A heating tool is prepared so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and the ear hooking portion is made of polyurethane non-woven fabric (spun bond method, basis weight 30 g / m 2 ^A heating tool was obtained in the same manner as in Example 1 except that ² ) was used.

Example 7
A heating tool is prepared so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and the ear hooking portion is made of polyurethane non-woven fabric (spun bond method, basis weight 60 g / m 2 ^A heating tool was obtained in the same manner as in Example 1 except that ² ) was used.

Example 8
A heating tool is manufactured so that La (mm), Lb (mm), and Lc (mm) become as shown in Table 2, and the first bag sheet of the mask main body is made of polypropylene non-woven fabric (spunbond method, A heating tool was obtained in the same manner as in Example 1 except that the basis weight was 30 g / m ² ).

Example 9
A heating tool is produced so that La (mm), Lb (mm), and Lc (mm) become as shown in Table 2, and the first bag sheet of the mask main body is made of polypropylene non-woven fabric (SMS method, tsubo A heating tool was obtained in the same manner as in Example 1 except that the amount was 50 g / m ² ).

Example 10
A heating tool was obtained in the same manner as in Example 1 except that no slits were formed in the ear hooking portion.

Comparative Example 1
A heating tool was obtained in the same manner as in Example 1, except that the heating tool was prepared so that La (mm), Lb (mm), and Lc (mm) would be as shown in Table 2.

Comparative Example 2
A heating tool is prepared so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and the first bag sheet of the mask body is made of polyethylene terephthalate non-woven fabric (needle punch method) The basis weight is 90 g / m ² ), the ear hooking portion is a polypropylene non-woven fabric (SMS method, 40 g / m ² , fine fiber), and the slit is not formed in the ear hooking portion. Similarly, a heating tool was obtained.

Comparative Example 3
A heating tool is prepared so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and the first bag sheet of the mask main body is made of a non-woven fabric made of polyethylene terephthalate (needle punch Law, basis weight 90 g / ^{m 2)} and then, the ear shell, polypropylene nonwoven fabric (SMS method, basis weight 40 g / ^{m 2,} except that the central film layer) and, in the same manner as in example 1, warming device I got

Comparative Example 4
A heating tool is prepared so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and the first bag sheet of the mask body is made of polyethylene terephthalate non-woven fabric (needle punch method) A heating implement was obtained in the same manner as in Example 1 except that the basis weight was 90 g / m ² ).

Comparative Example 5
A heating tool was prepared so that La (mm), Lb (mm), and Lc (mm) were as shown in Table 2, and the ear hooking portion was made of a polypropylene non-woven fabric (SMS method, basis weight 40 g / m ² A heating tool was obtained in the same manner as in Example 1 except that the slit was not formed in the ear hooking portion.

The following evaluation was performed using each heating implement obtained as mentioned above. The results are shown in Table 2.

(Evaluation)
-Stretchability of Mask Body First, the pair of ear hooks were peeled off from the heating tool, and the mask body was bisected at the longitudinal center line. Next, using one of the bisected mask bodies and clamping both ends of the mask body in the longitudinal direction with a chuck and applying stress using the following apparatus, in the longitudinal direction at a speed of 300 mm / min. The load (N) at 4 cm elongation was measured. In addition, when sandwiching the mask main body, the heating element was removed. The sample width was adjusted to 80 ± 10 mm, and the chuck interval was adjusted to 80 ± 10 mm.
Device Name: "Tensiron Universal Testing Machine"
Manufacturer: "Orientec Co., Ltd."

-Elongation of ear hooks First, the pair of ear hooks was peeled off from the heating tool. In the case where the mask main body and the ear hook portion are integrated (one sheet of continuous sheet), the inner side of the arc of the base end side of the hole 54L is cut 5 mm inward. Next, using one of the ear hooks, clamp the La direction both ends of the ear hooks with a chuck using the following equipment, apply stress, and stretch 100% in the La direction at a speed of 300 mm / min. The tensile strength was then measured when the length corresponding to the initial length of 10% was returned. The sample width was adjusted to 80 ± 10 mm, and the chuck interval was adjusted to 55 ± 15 mm.
Device Name: "Tensiron Universal Testing Machine"
Manufacturer: "Orientec Co., Ltd."
From the obtained measurement results, the stress change rate (%) in the La direction of the ear hook portion was calculated from the following formula (1).
Stress change rate (%) = {[100% elongation stress (N)]-[10% return elongation stress (N)] / 100% elongation stress (N)} × 100 (1)

-Sensory evaluation Each heating implement was worn for 30 minutes by 10 skilled panelists, and evaluated according to the following criteria, and the average value of 10 persons was calculated.
[Fit]
5: good fit 4: slightly good fit 3: good fit 2: slightly fit 1: little fit [lack of pressure]
5: no sense of pressure at all 4: no sense of pressure at all 3: no sense of pressure 2: slight sense of pressure 1: sense of pressure [warming around eyes (suppository)]
5: A feeling of warmth around the eyes is sufficient 4: A feeling of warmth around the eyes is somewhat sufficient 3: A feeling of warmth around the eyes 2: A feeling of warmth around the eyes is slightly lacking 1: The surroundings of the eyes The feeling of warmth is not enough [the feeling of warmth around the eyes (lateral position)]
5: A feeling of warmth around the eyes is sufficient 4: A feeling of warmth around the eyes is somewhat sufficient 3: A feeling of warmth around the eyes 2: A feeling of warmth around the eyes is slightly lacking 1: The surroundings of the eyes No sense of warmth [feeling of relaxation]
5: A sense of relaxation is sufficient 4: A sense of relaxation is sufficient 3: A sense of relaxation 2: A sense of relaxation is not enough 1: A sense of relaxation is not

The heating implement prepared in Example 2 and Comparative Example 1 was attached for 10 minutes in a lateral reclining position under a room temperature environment (20 ° C., 55%). The heating tool was then removed and the temperature of the skin on the face was measured using a thermostat.
The area to be over 38 ℃ was calculated by image analysis, whereas was 31.8Cm ² In Example 2, was 10.6 cm ² in Comparative Example 1.

Claims

A pair of ear hooks joined to the mask main body covering both eyes, the heating element provided on the mask main body, and both end portions in the longitudinal direction of the mask main body and holding the mask main body so as to cover both eyes of the wearer And, equipped with the following conditions, mask.
(conditions)
(I) The ear hooking portion has an opening for ear hooking, and the maximum length of the opening is La (mm), and the end on the mask main body side in La (mm) of the one opening is (La × 2 + Lb) <285, where Lb (mm) is the length from the other relevant opening to La (mm) to the end on the mask main body side,
(Ii) the stress when the mask body is elongated by 4 cm in the longitudinal direction is less than 70 N,
(Iii) The stress change rate in the La direction of the ear hook portion represented by the following formula (1) is 35% or more.
Stress change rate (%) = {[100% elongation stress (N)]-[10% return elongation stress (N)] / 100% elongation stress (N)} × 100 (1)
When the length in the lateral direction at the longitudinal center of the mask body is Lc (mm),
The mask according to claim 1, wherein Lc / (La × 2 + Lb) is 0.2 or more and 0.4 or less.
The mask according to claim 1, wherein a stress (N) at 100% elongation in the La direction of the ear hook portion is 2 or more.
The mask according to any one of claims 1 to 3, wherein the ear hooking portion is a non-woven fabric.
The mask according to any one of claims 1 to 4, wherein the heating element generates water vapor by an oxidation reaction of an oxidizable metal.
The mask according to any one of claims 1 to 5, wherein the heating elements are arranged in pairs, each of which is arranged to cover the eyes.