TWI785176B - Mask - Google Patents

Abstract

The warming device (50) has a mask body (51) covering the eyes, a heating element (100) arranged on the mask body (51), and two longitudinally connected to the mask body (51) respectively. A pair of ear-hanging parts (52L, 52R) held at the ends and in such a manner that the eyes of the wearer are covered by the mask main body part (51) satisfy the following conditions. (Condition) (i) The ear part (52) has a hole (54) for the ear, and the maximum length of the hole (54) is La (mm), and La (mm) is set from the side hole (54) ( The length from the end of the mask body (51) side in mm) to the end of the mask body (51) in La (mm) of the hole (54) on the other side is Lb (mm) ), (La×2+Lb)<285; (ii) the stress (N) when the mask body (51) is extended by 4 cm in the longitudinal direction does not reach 70 N; (iii) the following formula (1) The stress change rate in the La direction of the lug part (52) shown is 35% or more. Stress change rate (%)={[stress at 100% elongation (N)]-[stress at recovery of 10% elongation (N)]/stress at 100% elongation (N)}×100 (1)

Description

mask

The present invention relates to a mask.

In recent years, the functions of masks covering the eyes and around the eyes have been diversified, and various masks have been developed. For example, there is an eye mask-type heating device that accommodates inside a heating element that utilizes oxidation heat generated by an oxidation reaction of a metal to be oxidized. The eye mask-type warming device is popular because it uses a heating element to warm the wearer's eyes, and is used by hanging a pair of hanging ear parts on the left and right ears. It is light and easy to use.

On the other hand, expectations for eyewear are increasing. For example, Patent Document 1 discloses an eye mask-type warming device. It is easy to hang the ear-hanging parts on the ears, and it is easy to make the mask body conform to the face. The ear-hanging parts are specified. The position of the connecting portion, the shape of the opening, and the slit, etc.

prior art literature patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2008-295779

The present invention provides a mask, which includes a mask body covering both eyes, a heating element provided on the mask body, and both ends of the mask body in the longitudinal direction respectively bonded to each other. And a pair of ear hanging parts are held in such a way that the eyes of the wearer are covered by the mask body, and the following conditions are satisfied.

(condition)

(i) The ear-hanging part has an opening for the ear-hanging part, and the maximum length of the opening is La (mm), and La (mm) of the opening from one side is the side of the above-mentioned cover body When the length from the end of the opening to the end of the mask body side in La (mm) of the opening on the other side is Lb (mm), (La×2+Lb)<285; (ii) When the mask body is extended by 4 cm in the longitudinal direction, the stress does not reach 70N; (iii) The stress change rate of the above-mentioned La direction of the above-mentioned lug part represented by the following formula (1) is more than 35%.

Stress change rate (%)={[stress at 100% elongation (N)]-[stress at recovery of 10% elongation (N)]/stress at 100% elongation (N)}×100 (1)

10:Heating Department

20: Containment

50: warming utensils

51: mask body part

52L: Ear hanging part

52R: Ear hanging part

53: bag body

54L: hole

54R: hole

100: heating element

201: 1st container sheet

202: second container sheet

203: peripheral part

531: 1st bag body sheet

532: Second bag body sheet

571: Notch

572: Notch

La: maximum length

Lb: Length

Lc: Length

The above purpose, and other purposes, features, and advantages are further clarified by the preferred embodiments described below and the following drawings accompanying them.

Fig. 1 is a plan view schematically showing a state in which the ear-hanging portions of the heating appliance according to the embodiment are opened.

Fig. 2 is a plan view schematically showing the state before opening the ear-hanging portion of the heating appliance according to the embodiment.

Fig. 3 is an exploded perspective view of the heating appliance shown in Fig. 1 .

Fig. 4 is a plan view schematically showing the heating element of the embodiment.

Fig. 5 is a cross-sectional view schematically showing the heating element of the embodiment.

Fig. 6 is a plan view showing a modification example of the hole of the ear hanging portion of the heating appliance.

In recent years, the use of eye mask-type warming devices has been diversified, not only for the wearer to use with his upper body upright, but also for use in a supine position, or further in a side-lying position. Therefore, in the warming device of the previous eye mask type as disclosed in Patent Document 1, the following new problem has arisen: when using the situation with the side lying position, the cover laterally shifts, and there is a gap between the cover and the wearer. There is a gap between them, making it difficult to fully obtain the heating effect that the mask originally had. Specifically, due to the rigidity of the heating element contained in the heating device, it is difficult to make the mask closely adhere to the shape of the wearer's eyes along the periphery of the nose, so that when the wearer is sideways, it is easy to A gap is created between the wearer and the mask.

Here, in order to suppress the lateral deviation of the eye mask-type heating device, without performing a special design, for example, by shortening the length of the mask in the width direction so that the mask is closely attached to the face of the wearer, There is a tendency for the wearer to experience a feeling of oppression due to increased stress on the part of the wearer where the ear strap is worn or behind the ear.

Therefore, even if the length of the mask in the lateral direction is shortened compared with the previous one, the present inventor can reduce the pressure on the part where the ear-hanging parts are worn or behind the ears, and can suppress the pressure of the mask even in the case of lying on the side. From the point of view of positional deviation, we have conducted diligent research and found that: when wearing the mask, it does not press against the range from the end of the eye to the temple, and from the end of the eye to the earlobe, and presses the wearer's brow closely Nearby, the lateral offset of the mask can be effectively suppressed, the sense of fit can be improved, and the sense of oppression can be reduced. In addition, regarding the mask, further research was conducted from the viewpoint of solving the problem of obtaining a good balance between the fitting feeling and the pressure feeling, and even heating a wide range even when lying on the side. As a result, it was found that the The effective guideline of this subject is that the mask satisfies specific conditions, thus completing the present invention.

According to the present invention, it is possible to provide a good texture that can obtain a sense of fit and pressure. A mask of balance. In addition, the mask of the present invention can be heated in a wider range than before, and can obtain a uniform warm feeling.

Hereinafter, embodiments of the present invention will be described using the drawings. In addition, in all drawings, the same code|symbol is attached|subjected to the same component, and description is abbreviate|omitted suitably. Also, below, the case where the mask of the present invention is a warming device of all eye mask types will be described.

[warming utensils]

First, an example of the heating device 50 of this embodiment will be described based on FIGS. 1 to 3 .

The warming device 50 of this embodiment is an eye mask type, and the wearer's eyes are covered by the mask body part 51, and is used to apply heat to the eyes and its surroundings from a pair of heating elements 100 arranged on the mask body part 51. Water vapor heated to a specific temperature.

As shown in FIG. 1 , the warming device 50 has a cover body portion 51 and a pair of ear portions 52 ( 52L, 52R) respectively formed with holes 54 ( 54L, 54R) for inserting the ear portions.

The warming device 50 is worn in such a way that the ear parts 52 are hung on the wearer's ears, and the eyes of the wearer are covered with the mask body part 51 . In this wearing state, warm steam generated from a heating element 100 described below is applied to the eyes of the wearer.

字形狀。又，於將掛耳部52自遮罩本體部51向外側打開時，孔52相對於遮罩本體部51之長度方向朝向下方傾斜並延伸。 FIG. 2 is a plan view schematically showing the state before the ear-hanging portion 52 of the heating device 50 is opened. In this figure, a pair of hanging ear parts 52 are folded towards the inner side of the heating device 50 and joined to each other at the central part in the longitudinal direction of the cover body part 51 . There are suture holes or half-cut grooves in the joining area. That is, a suture hole or a half-cut groove is provided in such a way that a pair of ear-hanging parts 52 formed in a series are divided into two, and the wearer cuts the suture hole or half-cut groove to obtain the ear-hanging part 52L and the hanging ear part 52L. Ear 52R. Thereafter, the state shown in FIG. 1 can be obtained by inverting the ear-hanging portion 52L and the ear-hanging portion 52R toward the outside. That is, the ear parts 52 are extended obliquely downward from the vicinities of both end parts in the longitudinal direction of the cover body part 51 . As shown in FIG. 1, when the ear hanging portion 52 is opened outward from the cover body portion 51, the ear hanging portion 52 becomes

word shape. Moreover, when the ear part 52 is opened outward from the cover main body part 51, the hole 52 is inclined downward with respect to the longitudinal direction of the cover main body part 51, and extends.

By adopting such an arrangement, the mask body portion 51 can be more easily fitted to the face when worn.

FIG. 3 is an exploded perspective view of the heating device 50 shown in FIG. 1 . As shown in FIG. 3 , the mask main body 51 is composed of a bag body 53 , and a pair of heating elements 100 are arranged inside the bag body 53 .

The mask main body 51 has a horizontally long shape in the longitudinal direction X and the short direction Y perpendicular thereto, and is substantially symmetrical to the left and right. Moreover, the mask main body part 51 is comprised by the flexible soft sheet material, and has extensibility as follows. Also, although the mask main body 51 may or may not have stretchability, it is preferably stretchable from the viewpoint of pressing the warming device 50 closely against the vicinity of the eyebrows to give a stronger sense of fit. sex.

The bag 53 constituting the mask main body 51 has a first bag sheet 531 on the side close to the wearer's skin and a second bag sheet 532 on the side away from the wearer's skin. Here, the first bag sheet 531 and the second bag sheet 532 are provided so as to sandwich the heating element 100 described below.

The first pocket sheet 531 and the second pocket sheet 532 have the same shape and are substantially oblong. In addition, 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 bag 53 is formed by overlapping the first bag sheet 531 and the second bag sheet 532 , joining at least a part of their peripheral edges, and joining the central part in the Y direction along the X direction. In order to join the first pocket sheet 531 and the second pocket sheet 532, for example, a hot melt adhesive can be used. Furthermore, the heating element 100 can also be fixed to the bag body 53 by adhesive or heat sealing.

As the first bag sheet 531 and the second bag sheet 532, any ones that are extensible and capable of supplying air to the heating element 100 inside may be used. For example, fiber sheets represented by non-woven fabrics can be used. For example, one or two or more selected from needle-punched nonwoven fabrics, air-through nonwoven fabrics, and spunbond nonwoven fabrics can be used.

In the bag body 53, at the positions of the central parts of the two long sides extending along the Y direction, substantially V-shaped notches 57 (notches 571, 571, notch portion 572). The notches 571 and 572 are notched in different degrees. The notch 571 is located between the eyebrows of the wearer or near it when the heating device 50 is worn. The notch 572 is located on the bridge of the nose of the wearer when the heating device 50 is worn. Therefore, generally, the cut-in degree of the notch portion 572 is larger than that of the notch portion 571 .

Furthermore, as shown in FIG. 1 , in the bag body 53 , the slit connected to the notch portion 572 extends from the lower end of the bag body 53 in the central portion of the bag body 53 and isolates the heating element 100 .

The lugs 52 of the heating device 50 are arranged on the first bag sheet 531 as shown in FIG. 3 in a state before use. In the state before use, that is, in the state where the left and right ear hanging parts 52 are located on the first bag sheet 531 , the outline formed by the left and right ear hanging parts 52 is substantially the same as the outline of the first bag sheet 531 .

The ear hanging portion 52 has the function of holding the warming device 50 on the wearer's face.

The ear parts 52 are used as a pair, and the ear parts 52L and 52R are attached to respective ends in the longitudinal direction (X direction) of the mask body part 51 . More specifically, regarding the ear hanging portion 52, when the side of the mask main body 51 is defined as the proximal end and the side away from the mask main body 51 is defined as the distal end, the area on the proximal end side of the ear hanging portion 52 and the The wearer's side sheet (first pocket sheet 531 ) of the mask main body 51 is bonded.

Moreover, each of the ear hanging portion 52L and the ear hanging portion 52R has a joint region overlapping with the cover main body portion 51 .

The hanging ear portion 52 is preferably extensible in the lateral width direction.

The ear hanging portion 52 may be composed of a single-layer sheet, or may be a laminate of a plurality of layers of sheets. A fibrous sheet made of fibrous materials such as nonwoven fabric can be used as the ear hanging portion 52 . The hanging ear portion 52 may be made of the same material as the bag body 53 described above, or may be made of a different material.

The planar shape of the pair of hanging ear parts 52 is not particularly limited, but it is preferably the same as the planar shape of the right side of the mask body part 51 and the plane of the left side when the mask body part 51 is bisected at the longitudinal centerline. Shapes of the same shape. For example, a substantially square shape is mentioned.

The hole 54 is a hole for hanging the ear hanging part 52 on the wearer's ear, and is an opening through the ear hanging part 52 . The hole 54 is provided substantially in the center of the ear part 52 . Also, the hole 54 is formed in a region other than the bonding region where the cover body portion 51 and the ear portion 52 are bonded.

The shape of the hole 54 is not particularly limited, but in FIGS. 1 and 2 , it is a long strip in the width direction and has a rounded substantially triangular shape (drop shape) that expands from the base end toward the end of the lug portion 52 . Also, the holes 54 may be vertically symmetrical or asymmetrical. That is, the curvature radii of the upper and lower sides may be the same or different.

Moreover, the holes 54 extend downward and are inclined with respect to the longitudinal direction of the cover main body 51 when the ear parts 52 are opened outward from the cover main body 51 .

[heating stuff]

Next, the heating element 100 included in the heating device 50 will be described. In this embodiment, a pair of heating elements 100 are arranged on the heating device 50, and each heating element 100 covers the eyes of the wearer.

The planar shape of the heating element 100 is approximately square. The rigidity of the heating element 100 is large Due to the rigidity of the cover body part 51 , the heating element 100 as a whole is more difficult to expand and contract than the cover body part 51 .

Fig. 4 is a plan view showing an example of the heating element 100 of this embodiment. Also, Fig. 5 is a sectional view taken along line A-A of Fig. 4 . The heating element 100 of the present embodiment includes a heating unit 10 and a container 20 for housing the heating unit 10 .

The heat generating part 10 contains an oxidizable metal, a carbon component, a water absorbing agent, water, a reaction accelerator, and the like.

Specifically, the heat generating part 10 is one that imparts a warming effect by exothermic heat generated by the oxidation reaction of the oxidizable metal, and can use one that has a heat generation temperature of 30° C. or higher and 70° C. or lower as measured in accordance with JIS S4100. In addition, the heat generating part 10 functions to generate water vapor by heating the contained water.

The metal to be oxidized is a metal that generates oxidation reaction heat, for example, powder or fiber of one or two 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 catalyst ability. For example, one or more materials selected from the group consisting of activated carbon, carbon black, acetylene black, and graphite can be used.

In the heat generating part 10, a water absorbing agent may be contained in order to retain moisture and efficiently advance the oxidation reaction of the metal to be oxidized. A water-absorbing polymer or a water-absorbing powder can be used as the water-absorbing agent.

In this embodiment, the heat generating part 10 is shown as an example in the form of a sheet, but the heat generating part 10 may be in a powder form or in a sheet form. However, a sheet form is preferable at the point which is excellent in usability.

This kind of sheet-like heating element can be coated by the method of papermaking together with the fiber It can be obtained by any method such as a method of compacting by pressing or the like.

From the viewpoint of obtaining appropriate rigidity, the thickness of the heat generating portion 10 is preferably at least 0.2 mm, more preferably at least 0.4 mm, and still more preferably at least 0.5 mm. Also, from the viewpoint of improving operability, 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.

By setting the thickness of the heat generating unit 10 within the above-mentioned range, the heat generating effect can be enhanced, and the heat generating body 100 can be easily handled in a size. Also, since the heat generating part 10 has appropriate rigidity, it is possible to feel a stronger fit when wearing the mask.

In addition, the thickness of this heating part 10 represents an average thickness.

Next, the container 20 constituting the heating element 100 will be described.

The container 20 is at least partially air-permeable and accommodates the heating unit 10 . The container 20 can be constructed by bonding the peripheral edge portions 203 of two sheets (the first container sheet 201 and the second container sheet 202 ), for example, as shown in FIG. 5 .

Furthermore, the first container sheet 201 is arranged on the side closer to the wearer's skin than the heat generating part 10 , and the second container sheet 202 is arranged on the side farther from the wearer's skin than the heat generating part 10 .

When the heating device 50 supplies water vapor to the eyes or skin, the first container sheet 201 is preferably air-permeable from the viewpoint of efficiently imparting 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 air permeability of the second container sheet 202 is more preferably poorer than that of the first container sheet 201, and more preferably air-impermeable.

In the case where the heat generating part 10 has a heat generating function obtained by oxidation of the oxidized metal, if the gas permeability of the first container sheet 201 and the second container sheet is adjusted as described above, the The heating device 50 effectively imparts water vapor to the eyes or skin, and the hair In the heat part 10, air is preferentially sucked in from the side of the first storage sheet 201, and an exothermic reaction proceeds. Therefore, from the viewpoint of obtaining a balance between fitting feeling and heat response, and moderately warming the eyes or skin, the air permeability of the first receiving sheet 201 is preferably 3,000 to 6,000 seconds/100ml, more preferably 4,000 seconds. ~6,000 seconds/100ml.

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

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

As the second container sheet 202, one that does not substantially permeate oxygen can be used, for example, polyolefins such as polyethylene and polybutadiene, polyvinyl chloride, polyvinylidene chloride, polyester, polyether, etc., can be used. One or more of polyamide and polyamide.

In addition, since the heating device 50 of this embodiment has the metal to be oxidized by oxygen, it is usually sealed and stored in an oxygen barrier bag.

The warming device 50 of the present embodiment is provided with a shield body part 51 covering both eyes, a heating element 100 provided on the shield body part 51, and both ends of the length direction of the shield body part 51 respectively bonded to each other by The mask main body 51 holds a pair of ear straps 52 (52L, 52R) so as to cover both eyes of the wearer, and satisfies the following conditions.

(condition)

(i) The hanger part 52 has a hole 54 for the hanger. Set the maximum length of the hole 54 as La (mm), and set the side of the cover body part 51 from La (mm) of the hole 54 on one side. When the length from the end to the end of the mask main body 51 side in La (mm) of the other side hole 54 is set as Lb (mm), (La×2+Lb)<285; (ii) The stress (N) when the mask body portion 51 is extended by 4 cm in the longitudinal direction does not reach 70N; (iii) The stress change rate in the La direction of the lug portion 52 represented by the following formula (1) is 35% above.

Stress change rate (%)={[stress at 100% elongation (N)]-[stress at recovery of 10% elongation (N)]/stress at 100% elongation (N)}×100 (1)

Under the condition (i), the maximum length of the hole 54 ie La (mm) refers to the length when no load is applied in the lug 52 in the state before the heating device 50 is used. In the heating device 50, as shown in Figs. 1 and 2, both ends of the hole 54 in the X direction are arc-shaped, 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 in the hole 54 is an average value of both.

In addition, when the ear part 52 has a slit connected to the hole 54, the maximum length of the slit is not included in La.

Also, when the shape of the hole 54 as shown in FIG. 6 becomes a teardrop-shaped situation where the apex is set as the cover body part 51 side, the apex of the cover body part 51 side of the hole 54 and the sum of the hole 54 are masked. A straight line connecting tops on opposite sides of the body portion 51 is La (mm).

Furthermore, when the hole 54 of the ear part 52 is a slit (such as a T-shaped cutout) without an opening area through which the ear part passes, the maximum length of the slit becomes La (mm).

From the point of view of making it easy to hang the ear-hanging portion 52 on the user's ear and reducing pressure, the lower limit of La (mm) is preferably 25 (mm) or more, more preferably 35 (mm) or more, and then Preferably it is 45 (mm) or more, especially preferably 50 (mm) or more.

On the other hand, the upper limit of La (mm) is lower than the upper limit of La (mm) from the viewpoint of suppressing the uncomfortable feeling that the ear-hanging portion 52 is too long and cannot be properly hung on the ear and improving the fit feeling of the heating device 50. Preferably less than 90 (mm), more preferably less than 80 (mm), further preferably less than 70 (mm), especially preferably 65 (mm) or less.

Also, the length Lb from the end of the mask main body 51 in La (mm) of the hole 54L on one side to the end of the mask main body 51 in La (mm) of the other hole 54R (mm) is the length measured in the state in which the pair of ear parts 52 are unfolded and the heating device 50 as a whole becomes flat. As shown in FIG. 1 , in the heating device 50 , Lb becomes the shortest distance between the hole 54L and the hole 54R. In other words, Lb is the length between the vertex of the arc on the base end side of the hole 54L and the vertex of the arc on the base end side of the hole 54R.

Furthermore, when the hole 54 of the ear hanging part 52 is a slit (such as a T-shaped incision) that does not have an opening area for the ear to pass through, it becomes the end of the base end side of one side of the slit. , and the length between the end of the base end of the slit on the other side.

From the viewpoint of sufficiently covering both eyes of the user, the lower limit of Lb (mm) is preferably at least 110 (mm), more preferably at least 120 (mm), and still more preferably at least 130 (mm).

On the other hand, from the viewpoint of making the warming device 50 fit better, the upper limit of Lb (mm) is preferably 230 (mm) or less, more preferably 200 (mm) or less, and even more preferably It is preferably 180 (mm) or less.

Moreover, the mask main body part 51 and the ear-hanging part 52 may be integrated (one sheet connected together).

The heating device 50 satisfies (La×2+Lb)<285 in the condition (i). Thereby, it is easy to make the warming device 50 conform to the wearer appropriately. (La×2+Lb) (mm) is equivalent to the length from the back of one ear of the wearer to the back of the other ear when wearing the warming device 50. It is intended to make the heating device 50 The feeling of obedience becomes better. (La×2+Lb)(mm) should just be less than 285, and it is preferably 280 or less from the viewpoint of improving fit. On the other hand, from the viewpoint of reducing the feeling of pressure, (La×2+Lb)(mm) is preferably 250 or more, more preferably 260 or more, 265 or more, and 270 or more in order.

In the condition (ii), the length direction of the mask body portion 51 refers to the X direction shown in FIG. 1 . The stress (N) when the mask body portion 51 is extended by 4 cm in the length direction is the stress generated in the stretching direction when the wearer wears the heating device 50. The smaller the mask body portion 51 is, the easier it is to expand. Can relieve pressure. In the warming device 50, the stress (N) when the mask main body 51 is extended by 4 cm in the longitudinal direction is set to be less than 70N, preferably 50N or less, more preferably 45N or less, and furthermore It is preferable to set it as 35N or less, and it is especially preferable to set it as 30N or less. In this way, the mask main body 51 can be expanded, the pressure on the part where the ear strap 52 is worn or behind the ear can be reduced, and the pressure around the wearer's eyebrows can be easily increased. Thereby, lateral deviation of the heating device 50 can be effectively suppressed. As a result, the eye area can be warmed evenly, and the warm feeling can be felt in a wider range, so it is easy to obtain a sense of relaxation of the whole body.

On the other hand, the lower limit of the stress is not particularly limited, but it is preferably 10N or more, more preferably 15N or more, from the viewpoint of improving the operability of the heating device 50 and obtaining rigidity and strength. , and more preferably more than 20N.

Furthermore, when the elongation in the longitudinal direction of the mask main body 51 is less than 4 cm, it is preferable to set the stress (N) when the mask main body 51 is elongated by 2 cm in the longitudinal direction to less than 30 N, more preferably In order to set it as 26N or less, it is more preferable to set it as 24N or less.

Furthermore, the so-called elongation of the mask body portion 51 by 4 cm in the longitudinal direction is intended to elongate the area in the mask body portion 51 except for the heating element 100, which is substantially equivalent to making the bag body 53 elongate by 4 cm in the longitudinal direction. . Also, it corresponds to an elongation rate of about 50% of the mask main body portion 51 on the premise that the condition (i) is satisfied.

In addition, in the heating device 50 of this embodiment, the cover main body 51 has the notch 57 in the longitudinal central part, so the following situation occurs, that is, when extending in the longitudinal direction, the notch is 57 generates a load, and the stress of the mask main body portion 51 cannot be properly measured. Therefore, it is appropriate to divide the mask main body portion 51 into two in the lateral direction, and use one of the mask main body portions 51 divided into two equal parts for measurement.

In addition, in the condition (iii), the La direction of the ear part 52 means the longitudinal direction of La shown in FIG. 1 . In addition, the La direction of the ear-hanging portion 52 is preferably a direction in which the ear-hanging portion 52 is easily extended, but it is not limited to the case of being parallel to the X direction.

The so-called rate of change of stress represented by the above-mentioned formula (1) refers to the degree of stress at which the lugs 52 return to their original positions after any of the lugs 52 is elongated in the La direction. That is, it is intended that the higher the stress generated when the lug 52 is stretched 100% and then restored to 10%, the higher the stress for the lug 52 to return to its original position, and the stress change rate becomes lower. In other words, the higher the rate of change of the stress, the lower the stress for the temporarily elongated ear-hanging portion 52 to return to its original position. As a result, the stress on the wearer's part where the ear-hanging portion 52 is hung or behind the ear can be reduced. pressure. Also, on the other hand, by combining with the conditions (i) and (ii), a good fitting feeling can be obtained.

In addition, when the rate of stress change differs between the lug part 52L and the lug part 52R, the stress change rate is made into the average value of both.

In the heating device 50, by setting the rate of stress change to 35% or more, the resilience of the ear strap 52 to elongation becomes low, thereby easily reducing the pressure on the part where the ear strap 52 is worn or behind the ear. feel. Also, from the viewpoint of improving the fitting feeling obtained through the synergy with conditions (i) and (ii), the stress change rate is preferably 40% or more, more preferably 50% or more, and still more preferably More than 60%. On the other hand, from the viewpoint of maintaining a fit, the stress change rate is preferably 80% or less, more preferably 75% or less, and still more preferably 72% or less.

Furthermore, the stress change rate (%) of the ear hanging portion 52 can be controlled by the material of the ear hanging portion 52 or the shape of the ear hanging portion 52 , specifically, the presence or absence of slits from the outer edge.

Also, when the elongation in the La direction of the lug portion 52 is less than 100%, by setting the 50% stress change rate represented by the following formula (2) to 35% or more, it is easy to reduce the effect on the hanging. Pressure on the part of the ear or behind the ear. From the same viewpoint, the 50% stress change rate is preferably at least 40%, more preferably at least 45%. On the other hand, from the viewpoint of maintaining a fit feeling, the stress change rate is preferably 60% or less, more preferably 50% or less.

50% stress change rate (%)={[Stress at 50% elongation (N)]-[Stress at 5% elongation (N)]/Stress at 50% elongation (N)}×100 (2)

In addition, in this embodiment, the stress (N) at the time of elongation of the mask main body part 51 and the lug part 52 can be measured by the method referring JIS L1913.

When the sample is the mask body part 51, set the sample width to 80 ± 10 mm, stretch the sample and set its initial length in the tester to 80 ± 10 mm, and measure it at a tensile speed of 300 mm /min Tensile strength when the mask main body portion 51 is extended by 4 cm in the longitudinal direction.

When the sample is the hanging ear part 52, set the sample width to 80 ± 10 mm, stretch the sample and set its initial length in the tester to 55 ± 15 mm, and measure it at a tensile speed of 300 mm/ min is the tensile strength when the specified length is elongated in the La direction (if the stress at 100% elongation is 100% of the initial length; if the stress at 50% elongation is 50% of the initial length) .

Specifically, it will be described in the following examples.

In addition, the stress (N) when the lug 52 returns to 10% elongation is based on JIS L1913. Set the sample width to 80±10mm, stretch the sample and set its initial length in the tester 55±15mm, measure the tensile strength when stretching 100% of the initial length in the La direction at a tensile speed of 300mm/min, and then recovering a length equivalent to 10% of the initial length. Similarly, the stress (N) when recovering 5% elongation is the same as the above stress when recovering 10% elongation Under the same measurement conditions of force, measure the tensile strength when the length of 50% of the original length is elongated in the La direction, and then the length equivalent to 5% of the original length is restored.

Here, in the heating device 50 of the eye mask type, there is a tendency that even if it is a little, the influence on the heating effect becomes obvious, and depending on the situation, there is also a large amount of oxygen entering from the gap in a short time, and the In case of excessive fever. Therefore, a higher level of conformity is required. On the other hand, since there is a so-called trade-off relationship between the fit feeling and the pressure feeling, it is important to properly control the balance of the load on the wearer in the entire heating device 50 .

In the heating device 50 in this embodiment, by fully satisfying the above-mentioned conditions (i) to (iii), the heating device 50 becomes easy to be in close contact with the wearer's eyebrows, and the fit feeling can be improved, and The load applied to the wearer's part where the ear straps 52 are worn or behind the ears is reduced, thereby suppressing the feeling of pressure. As a result, even in the case of lying on the side, the positional deviation of the heating device 50 can be effectively suppressed, and the warming effect obtained by the heating device 50 can be sufficiently obtained. Also, along with the improvement of the fit feeling, a more uniform warming effect can be obtained on the whole heating device 50 . Furthermore, according to the warming device 50 , by suppressing the position shift around the eyes, it is possible to feel a sense of heat in a wider range, and it is also easy to obtain a sense of relaxation of the whole body.

Furthermore, the warming device 50 can more effectively improve the balance between the fit feeling and the pressure feeling by having the following structure, and obtain a good warming effect.

In the heating device 50, when the length in the short direction at the center of the length direction of the cover body 51 is Lc (mm), it is preferable that Lc/(La×2+Lb) be 0.2 or more and 0.4 the following. That is, by controlling the lengths of the warming device 50 in the longitudinal and lateral directions, the heating device 50 can be easily fitted near the eyebrows of the wearer.

Furthermore, in the heating device 50 of the present embodiment, the so-called Lc refers to the length of the part except the slit in the longitudinal center line of the cover body part 51 as shown in FIG. 1 .

From the viewpoint of sufficiently covering both eyes of the user, the lower limit of Lc (mm) is preferably 50 (mm) or more, more preferably 60 (mm) or more, and still more preferably 70 (mm) or more.

On the other hand, from the point of view of making the warming device 50 fit better and reducing discomfort, the upper limit of Lc (mm) is preferably 180 (mm) or less, more preferably 150 (mm) ) or less, more preferably 110 (mm) or less, especially preferably 100 (mm) or less.

In the heating device 50, the stress (N) at 100% elongation in the La direction of the lug portion 52 is preferably 2 or more, more preferably 3 or more, and still more preferably 3.5 or more. Thereby, it is easy to extend the ear-hanging part 52 during use, it is easy to hang the ear-hanging part 52 on the ear, and it is easy to suppress the feeling of pressure on the part where the ear-hanging part 52 is hung or behind the ear.

On the other hand, the upper limit of the stress (N) at 100% elongation in the La direction of the ear-hanging portion 52 is not particularly limited, but it is easy to elongate the ear-hanging portion 52 and to hang the ear-hanging portion 52 on it during use. From the point of view of the ear, that is, the point of reducing pressure, it is preferably 15 or less, more preferably 10 or less.

As mentioned above, although embodiment of this invention was described referring drawings, these are examples of this invention, and various structures other than the above-mentioned can also be employ|adopted.

Regarding the above-mentioned embodiments, the present invention further discloses the following masks, uses, and the like. The mask of the present invention is not limited to the above-mentioned embodiments, and can be appropriately changed as long as it does not deviate from the gist of the present invention.

In the above-mentioned embodiment, the heating element 100 based on the oxidation-reduction reaction has been described as the function of the mask, but it is not limited to this, and it can also be heated by other methods, and it can also further have heat preservation and moisturizing functions. , cold preservation, rapid cooling, shading, fragrance, antibacterial, pressing and dustproof functions, etc. As a specific cover, in addition to the cover with steam heating function such as the warming device 50, for example, it can also be changed to (1) and then use a light-shielding member, the purpose is to block the sleep cover of light; (2) Using components with heat preservation function, the cover can be heated by heaters such as microwave ovens After-heating eye mask; (3) Combining cooling components such as cooling agent and cooling agent with heating function, which can be heated by heat and can also cool the eye mask; (4) combined with heating element A mask that uses components with aromatic components together to bring about a relaxing effect; (5) a mask with particles or spheres that exert pressure on the eyes and exert a finger-pressure effect; (6) a mask that uses electricity to make it A mask that vibrates to exert a massage effect, etc.

Hereinafter, an example of the reference form of this invention is shown.

<1> A mask comprising a mask body that covers both eyes, a heating element disposed on the mask body, and both ends of the mask body in the longitudinal direction respectively bonded to and covered by the mask body A pair of ear-hanging parts to be held by the wearer's eyes, and the following conditions are met:

(condition)

(i) The above-mentioned lug has an opening for the lug, and the maximum length of the opening is La (mm), and the La (mm) of the opening from one side is the distance from the side of the above-mentioned cover body. When the length from the end to the end of the mask body on La (mm) of the opening on the other side is Lb (mm), (La×2+Lb)<285; (ii) When the above-mentioned mask body is extended by 4 cm in the longitudinal direction, the stress does not reach 70N; (iii) The stress change rate of the above-mentioned La direction of the above-mentioned lug part represented by the following formula (1) is more than 35%; Stress change rate (%) ={[Stress at 100% elongation (N)]-[Stress at recovery of 10% elongation (N)]/Stress at 100% elongation (N)}×100 (1).

<2> The mask according to <1>, wherein Lc/(La×2+Lb) is 0.2 or more when the length in the short direction at the center of the mask body in the longitudinal direction is Lc (mm), and Below 0.4.

<3> The mask of <1> or <2>, wherein the 100% elongation of the above-mentioned La direction of the above-mentioned lug part The hourly stress (N) is 2 or more.

<4> The mask according to any one of <1> to <3>, wherein the above-mentioned ear-hanging parts are non-woven fabrics.

<5> The mask according to any one of <1> to <4>, wherein the stress when the mask body is extended by 4 cm in the longitudinal direction is 10N or more and less than 70N.

<6> The mask according to any one of <1> to <5>, wherein the stress when the mask body is extended by 2 cm in the longitudinal direction is less than 30N.

<7> The mask according to any one of <1> to <6>, wherein the rate of stress change in the La direction of the lug portion represented by the above formula (1) is preferably not less than 35% and not more than 80%. , more preferably 40% or more and 80% or less, further preferably 50% or more and 75% or less.

<8> The mask according to any one of <1> to <7>, wherein the rate of stress change in the La direction of the lug portion represented by the following formula (2) is preferably 35% or more and 60% or less , more preferably more than 40% and less than 60%, and more preferably more than 45% and less than 50%, stress change rate (%)={[stress at 50% elongation (N)]-[stress at recovery of 5% elongation (N)]/stress at 50% elongation (N)}×100 (2).

<9> The cover according to any one of <1> to <8>, wherein the above-mentioned lugs are respectively deployed from the vicinity of both ends in the longitudinal direction of the above-mentioned cover body towards obliquely downward.

字形狀。 <10> The cover according to any one of <1> to <9>, wherein when the above-mentioned ear-hanging part is opened outward from the cover main body, the above-mentioned ear-hanging part becomes

word shape.

<11> The mask according to any one of <1> to <10>, wherein when the ear hanging portion is opened outward from the mask body, the opening is inclined downward relative to the length direction of the mask body and extend.

<12> The mask according to any one of <1> to <11>, wherein the heating element is in the form of a sheet.

<13> The mask according to any one of <1> to <12>, wherein the exothermic system is oxidized A heating element that generates water vapor from the oxidation reaction of neutral metals.

<14> The cover according to <13>, wherein the heating element includes a heating unit, and a container for storing the heating unit therein.

<15> The mask according to <14>, wherein the above-mentioned heat-generating part contains a metal to be oxidized, a carbon component, a water-absorbing agent, and water.

<16> The mask according to <14> or <15>, wherein the thickness of the heat generating part is preferably at least 0.2 mm, more preferably at least 0.4 mm, further preferably at least 0.5 mm, and on the other hand, preferably at least 0.2 mm. 5 mm or less, more preferably 3 mm or less, still more preferably 2 mm or less.

<17> The mask according to any one of <14> to <16>, wherein the container includes a first container sheet and a second container sheet, and the air permeability of the first container sheet is: 3000~6000 seconds/100ml, and the above-mentioned second container sheet is airtight.

<18> The mask according to any one of <1> to <17>, wherein the above-mentioned heating elements are a pair, and are arranged so as to cover both eyes with each of them.

<19> A method of using a mask, which is used to cover both eyes with the mask of any one of <1> to <18>.

[Example]

Hereinafter, the present invention will be described in detail by means of examples. However, the scope of the present invention is not limited to this embodiment.

<Example 1>

According to the following procedure, an eye mask-type warming device having the configuration shown in Table 2 was produced.

[Preparation of water dispersion of exothermic powder]

Materials were prepared at the composition ratios shown in Table 1, and prepared according to the following procedure. An aqueous solution was prepared by dissolving Sanxian gum in water, followed by dissolving tripotassium phosphate and potassium hydroxide. On the other hand, prepare a powder made by premixing iron powder and activated carbon, add the premixed powder to the above aqueous solution, and stir at 150rpm for 10 minutes with a disc turbine type stirring blade to obtain a slurry-like heat Powder water dispersion. Furthermore, sodium chloride is sprayed on the coated surface after coating the heat-generating powder aqueous dispersion on the surface of the first water-absorbent sheet described below.

[Production of the heat department]

Use paper made from wood pulp (basis weight 20g/m ² , manufactured by Ino Paper Co., Ltd.), water-absorbing polymer (spherical, average particle size 300 μm, Aqualic CA, manufactured by Nippon Shokubai Co., Ltd., basis weight 70g /m ² ) and wood pulp paper (basis weight 30g/m ² , manufactured by Ino Paper Co., Ltd.) laminated and integrated polymer sheet (absorbed 10-45 mass% of the maximum water absorption of water air permeability under 2 seconds/100ml) as the first water-absorbent sheet, and polyethylene laminated paper (manufactured by NITTOKU Co., Ltd.) wood pulp paper (basis weight 50g/m ² , manufactured by Ino Paper Co., Ltd. ) as the second water-absorbent sheet.

To prepare the polymer sheet used as the first water-absorbent sheet, apply the heat-generating powder aqueous dispersion prepared as above to a thickness of about 3mm (coating amount: 1.7g) on the ^second absorbent sheet of 25cm2 (5cm×5cm). 1 The surface of the water-absorbent sheet, and spread 0.089g of salt (Japanese Pharmacopoeia Sodium Chloride: manufactured by Tomita Pharmaceutical Co., Ltd.) on the coated surface, and use the second water-absorbent sheet 25cm ² (5cm×5cm) to cover the coated surface , so as to make the heating part.

[Production of heating element]

The first container sheet in the container is composed of a porous stretched polyethylene moisture-permeable film (air permeability of 3,500 seconds based on JIS P8117) containing calcium carbonate. The second container sheet is composed of a non-moisture-permeable film made of polyethylene. Absorbent paper (basis weight: 35 g/m ² ) was laminated on one side of the second container sheet, with one of the above-mentioned sheet-like heat generating parts located in the middle, and the first container sheet and the second container sheet were separated The absorbent papers are stacked so as to face the outside, and the sheets are joined to each other at the peripheral parts to obtain a rectangular heating element.

[Making of heating utensils]

Use non-woven fabric made of polypropylene (needle punching method, basis weight 80g/m ² ) for the first bag body sheet, and non-woven fabric made of polyethylene terephthalate (air-through method, basis weight 30g/m 2 ) for the second bag body sheet ² ), as shown in Figure 3, clamp 2 heating elements obtained above between the two bag sheets, and place the first bag sheet and the second bag near the peripheral edge and the longitudinal centerline. The sheets are joined to each other to form the mask body. Furthermore, a non-woven fabric made of polypropylene (SMS (Spunbond/meltblown/spunbond, spunbond/meltblown/spunbond) method, basis weight 40g/m ² ) was used on the outer side of the first bag sheet to attach ear loops, Thereby obtain the warming appliance of eye mask type as shown in Figure 1. Furthermore, the above operations were carried out in an atmosphere without oxygen. Also, a downward slit (1.2 cm) extending downward in the longitudinal direction of the mask body from the vicinity of the outer end of the opening is provided.

Table 2 shows La (mm), Lb (mm), and Lc (mm) in the obtained heating device.

<Example 2>

A heating implement was obtained in the same manner as in Example 1 except that La (mm), Lb (mm), and Lc (mm) were produced so that Table 2 might show.

<Example 3>

Make a warming device so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and use polypropylene non-woven fabric (SMS method, basis weight 50g/m ² ) for the ear-hanging parts, Except for this, a heating device was obtained in the same manner as in Example 1.

<Example 4>

A heating implement was obtained in the same manner as in Example 1 except that La (mm), Lb (mm), and Lc (mm) were produced so that Table 2 might show.

<Example 5>

A heating implement was obtained in the same manner as in Example 1 except that La (mm), Lb (mm), and Lc (mm) were produced so that Table 2 might show.

<Example 6>

Make a warming device with La (mm), Lb (mm), and Lc (mm) as shown in Table 2, and use polyurethane non-woven fabric (spun-bonded method, basis weight 30g) for the ear-hanging parts /m ² ), except that, a heating device was obtained in the same manner as in Example 1.

<Example 7>

Make a warming device with La (mm), Lb (mm), and Lc (mm) as shown in Table 2, and use polyurethane non-woven fabric (spun-bonded method, basis weight 60g) for the ear-hanging parts /m ² ), except that, a heating device was obtained in the same manner as in Example 1.

<Embodiment 8>

La (mm), Lb (mm), and Lc (mm) were prepared in such a manner as shown in Table 2, and the first bag sheet covering the main body was made of polypropylene non-woven fabric (spun-bonded method, The basis weight is 30 g/m ² ), except that, a heating device was obtained in the same manner as in Example 1.

<Example 9>

La (mm), Lb (mm), and Lc (mm) were prepared in the manner shown in Table 2, and the first bag sheet covering the main body was made of polypropylene non-woven fabric (SMS method, base weight 50g/m ² ), except that, a heating device was obtained in the same manner as in Example 1.

<Example 10>

A heating tool was obtained in the same manner as in Example 1 except that no slit was formed in the ear hanging portion.

<Comparative example 1>

A heating implement was obtained in the same manner as in Example 1 except that La (mm), Lb (mm), and Lc (mm) were produced so that Table 2 might show.

<Comparative example 2>

Make a warming device so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and the first bag sheet covering the main body is made of polyethylene terephthalate Non-woven fabric (needle punching method, basis weight 90g/m ² ), non-woven fabric made of polypropylene (SMS method, 40g/m ² , fine fiber) for the ear-hanging part, without slits formed in the ear-hanging part, otherwise , Obtain a warming device in the same manner as in Example 1.

<Comparative example 3>

Make a warming device so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and the first bag sheet covering the main body is made of polyethylene terephthalate Non-woven fabric (needle punching method, basis weight 90g/m ² ), the ear-hanging part is made of polypropylene non-woven fabric (SMS method, basis weight 40g/m ² , the center is a film layer). 1 Obtain a heating appliance in the same way.

<Comparative example 4>

Make a warming device so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and the first bag sheet covering the main body is made of polyethylene terephthalate Nonwoven fabric (needle punching method, basis weight 90 g/m ² ), and a heating device were obtained in the same manner as in Example 1 except that.

<Comparative example 5>

Fabricate a warming device so that La (mm), Lb (mm), and Lc (mm) are as shown in Table 2, and use polypropylene non-woven fabric (SMS method, basis weight 40g/m ² , fine Fiber), except that no slits were formed in the lugs, a warming device was obtained in the same manner as in Example 1.

The following evaluations were performed using each heating device obtained in the above manner. The results are shown in Table 2.

(Evaluation)

． The expandability of the mask body

First, peel off a pair of hanging ear parts from the warming device, and divide the mask body into two halves at the longitudinal central line. Next, use one of the mask bodies that has been divided into two equal parts, use the following device to clamp both ends of the mask body in the length direction with the chuck, apply stress, and measure the elongation in the length direction at a speed of 300mm/min The load (N) at 4cm. Furthermore, when clamping the mask body, the heating element is excluded. In addition, the sample width was 80 ± 10 mm, and the distance between chucks was adjusted to be 80 ± 10 mm.

Device name: "Tensile Universal Testing Machine"

Manufacturer: "Orientec Co., Ltd."

． Elongation of the hanging ear

First, the pair of ear parts are peeled off from the heating device. When the mask body and the lugs are integrated (one continuous piece of sheet material), cut off the inner side 5 mm from the apex of the arc on the base end side of the hole 54L. Next, using one side of the lug, use the following device to clamp both ends of the lug in the La direction with the chuck, apply stress, measure the elongation of 100% in the La direction at a speed of 300mm/min, and then recover Tensile strength at a length equivalent to 10% of the original length. In addition, the sample width was 80 ± 10 mm, and the distance between chucks was adjusted to be 55 ± 15 mm.

Device name: "Tensile Universal Testing Machine"

Manufacturer: "Orientec Co., Ltd."

Based on the obtained measurement results, the stress change rate (%) in the La direction of the lug portion was calculated from the following formula (1).

Stress change rate (%)={[stress at 100% elongation (N)]-[stress at recovery of 10% elongation (N)]/stress at 100% elongation (N)}×100 (1)

． sensory evaluation

10 skilled sensory inspectors wore each heating device for 30 minutes, evaluated based on the following criteria, and calculated the average value of 10 persons.

[Sense of fit]

5: There is a good sense of obedience

4: There is a slightly good sense of conformity

3: There is a sense of obedience

2: slightly docile

1: almost no sense of obedience

[The degree of oppressive feeling]

5: No pressure at all

4: almost no sense of oppression

3: No sense of oppression

2: slightly oppressive

1: There is a sense of oppression

[Warm feeling around the eyes (supine position)]

5: The warmth around the eyes is sufficient

4: The warm feeling around the eyes is slightly sufficient

3: There is a warm feeling around the eyes

2: The warm feeling around the eyes is slightly insufficient

1: Insufficient warmth around the eyes

[Warm feeling around the eyes (side lying position)]

5: The warmth around the eyes is sufficient

4: The warm feeling around the eyes is slightly sufficient

3: There is a warm feeling around the eyes

2: The warm feeling around the eyes is slightly insufficient

1: There is no warm feeling around the eyes

[relaxation]

5: Sufficient sense of relaxation

4: Slightly sufficient sense of relaxation

3: There is a sense of relaxation

2: A little lack of relaxation

1: No sense of relaxation

The warming device made in Example 2 and Comparative Example 1 was hung for 10 minutes in a side lying position at room temperature (20° C., 55%). Use a thermostat to measure the skin temperature of the face immediately after removing the warming device.

The area at 38° C. or higher was calculated by image analysis, and it was 31.8 cm ² in Example 2, whereas it was 10.6 cm ² in Comparative Example 1.

50‧‧‧Heating appliances

51‧‧‧Masking body part

52L‧‧‧Ear mount

52R‧‧‧Ear mount

53‧‧‧bag body

54L‧‧‧hole

54R‧‧‧hole

100‧‧‧heating element

571‧‧‧Notch

572‧‧‧Notch

La‧‧‧maximum length

Lb‧‧‧Length

Lc‧‧‧Length

Claims (6)

A mask comprising a mask body that covers both eyes, a heating element disposed on the mask body, and a mask that is respectively joined to both ends of the mask body in the longitudinal direction and covers the wearer through the mask body A pair of hanging ear parts shall be maintained for both eyes, and the following conditions shall be met: (condition) (i) The ear-hanging part has an opening for the ear-hanging part, and the maximum length of the opening is La (mm), and La (mm) of the opening from one side is the side of the above-mentioned cover body When the length from the end of the opening to the end of the above-mentioned mask body side in La (mm) of the opening on the other side is set to Lb (mm), (La×2+Lb)<285; (ii) When the above mask body is stretched by 4 cm in the longitudinal direction, the stress does not reach 70 N; (iii) The rate of stress change in the above-mentioned La direction of the above-mentioned lug portion represented by the following formula (1) is 35% or more; Stress change rate (%)={[stress at 100% elongation (N)]-[stress at recovery of 10% elongation (N)]/stress at 100% elongation (N)}×100 (1). Such as the mask of claim 1, wherein when the length of the short-side direction at the center of the length direction of the above-mentioned mask body is set to Lc (mm), Lc/(La×2+Lb) is 0.2 or more and 0.4 or less. The mask according to claim 1 or 2, wherein the stress (N) at 100% elongation of the above-mentioned La direction of the above-mentioned lug part is 2 or more. The mask according to claim 1 or 2, wherein the above-mentioned ear hanging parts are non-woven fabrics. The mask according to claim 1 or 2, wherein the above-mentioned exothermic system generates water vapor through the oxidation reaction of the oxidized metal. The mask according to claim 1 or 2, wherein the heating elements are a pair, and are arranged in such a way that each of them covers both eyes.

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