TW202237229A - Mask - Google Patents

Abstract

Provided is a mask comprising a mask body that covers at least a portion of a user's face, and a cooling body that is provided on the mask body, the mask body is configured such that, when the mask is worn, an internal space is able to be formed between the mask body and the user's face, the cooling body is provided with a water retaining layer that retains water, a first sheet, and a second sheet disposed so as to face the first sheet with the water retaining layer therebetween, and is arranged on the mask body such that, when the mask is worn, at least a portion of the cooling body touches the user's face either directly or indirectly, and at least one of the first sheet and the second sheet comprises an air-impermeable sheet or an air-semi-impermeable sheet.

Description

mask

The invention relates to a mask and a cooling sheet for the mask.

Previously, in order to prevent the inhalation of dust, pollen, virus, etc. in the external atmosphere, or to prevent the scattering of saliva, etc., a mask covering the mouth and nose of the wearer was used. In recent years, the functions of this face mask covering mouth and nose have been diversified, and various face masks have been developed.

For example, Japanese Patent Application Laid-Open No. 2006-102145 discloses a mask, which is configured such that a gap is not easily formed between the upper edge of the mask body and the face by providing a reinforcing body on or near the upper edge of the mask body. , and by making the reinforcing body have a heating function, it warms the subnasal cavities on both sides of the nose, so that the wearer suffering from allergic rhinitis or cold feels comfortable.

In addition, Japanese Patent Application Laid-Open No. 2014-140774 discloses a face mask comprising: a mask body that forms a space between the mouth and nose when worn on the face; and an absorbent core with The face mask body is disposed in a manner facing the space; and is configured to prevent dryness of the throat by moisture evaporated from the absorbent core. In particular, the mask of Japanese Patent Application Laid-Open No. 2014-140774 is characterized in that it can be worn comfortably even at noon by arranging the absorbent core so that the absorbent core containing moisture does not contact the mouth and nose. Wear.

The present invention relates to a mask, which comprises: a mask body, which covers at least a part of the wearer's face; and a cooling body, which is arranged on the mask body; An internal space is formed between them; the above-mentioned cooling body has a water-retaining layer that retains water, a first sheet, and a second sheet that is arranged opposite to the first sheet through the above-mentioned water-retaining layer, and when worn, at least A part of the mask body is arranged in direct or indirect contact with the wearer's face; at least one of the first sheet and the second sheet includes a non-breathable sheet or a poorly breathable sheet.

Furthermore, the present invention relates to a cooling sheet for a mask, which is used together with a mask body covering at least a part of the wearer's face, and has a water-retaining layer for retaining water, and is configured to be arranged between the mask body and the wearer. In the intermediate state, at least a part of the water-retaining layer is in direct or indirect contact with the wearer's face.

In recent years, due to the spread of the new coronavirus (COVID-19) worldwide, it is required to wear face masks every day even in summer. However, with the previous masks, when worn in summer, there is a possibility that the mask may feel stuffy due to direct contact with the skin, and the humidity inside the mask may increase due to the vapor contained in the exhaled breath, resulting in hot and humid feeling. risk. Especially, regarding the mask of Japanese Patent Laid-Open No. 2006-102145, because the mask directly contacts the skin, the sultry heat is more obvious; Humidity increases and damp heat is more pronounced.

Therefore, the present invention relates to a mask and a cooling sheet for the mask that can bring cool feeling to the wearer.

That is, the present invention relates to a mask comprising: a mask body covering at least a part of the wearer's face; and a cooling body provided on the mask body; An internal space is formed between the faces; the above-mentioned cooling body has a water-retaining layer that retains water, a first sheet, and a second sheet that is disposed opposite to the first sheet through the above-mentioned water-retaining layer, and can be worn When at least a part of the mask body is in direct or indirect contact with the face of the wearer, at least one of the first sheet and the second sheet includes a non-breathable sheet or a poorly breathable sheet. Furthermore, the present invention relates to a cooling sheet for a mask, which is used together with a mask body covering at least a part of the wearer's face, and has a water-retaining layer for retaining water, and is configured to be arranged between the mask body and the wearer. In the intermediate state, at least a part of the water-retaining layer is in direct or indirect contact with the wearer's face.

According to the mask and the cooling sheet for the mask of the present invention, the wearer can have a refreshing feeling.

Hereinafter, preferred embodiments for carrying out the present invention will be described using the drawings. In addition, the following embodiments do not limit the invention of each claim, and not all combinations of features described in the embodiments are essential to the solution means of the invention. In addition, the drawings are schematic diagrams in which emphasis, omission, and ratios are appropriately adjusted to illustrate the present invention, and may differ from actual shapes, positional relationships, and ratios.

[the first embodiment] First, a face mask 1 according to a first embodiment of the present invention will be described using FIGS. 1 to 9 .

[The overall composition of the mask] As shown in Figure 1, the mask 1 of the present embodiment is a so-called cooling mask (hereinafter referred to as "cooling mask 1"), which includes: a mask body 2 that can cover at least a part of the wearer (in this embodiment, the mouth). nose); and one or more cooling bodies 20, which are arranged on the mask body 2. Moreover, the cooling mask 1 of this embodiment further includes one or more holding parts 30 for holding the mask main body 2 in front of the wearer's face.

Furthermore, in this specification, the end of the open side of the mask body 2 (the side that is in contact with the face) is referred to as the "face-facing end 5", and the closed end that is located on the opposite side of the face-facing end 5 is The side (bottom side) end is called "closed side end 6". Also, when observing the state of the mask main body 2 arranged in the left-right direction (ie, the state of FIG. 4 ) with the "face-side end portion 5" and "closed-side end portion 6" arranged in the left-right direction, the upper side edge portion It is called "upper edge part 7", and the lower side edge part in this state is called "lower edge part 8." Here, the "upper edge 7" is the edge on the nose side when the mask body 2 covers the wearer's mouth and nose, and the "lower edge 8" is the edge on the mandible side in this state.

Also, in this specification, the shape in which the opening of the veneer-side end portion 5 is opened to form a three-dimensional shape-retaining state is referred to as "three-dimensional shape". Furthermore, in this specification, the so-called "width direction" means from the face-facing end portion 5 of the first flap portion 10A described later via the closing-side end portion 6 to the facing-side end portion 5 of the second flap portion 10B described later. The so-called "both ends in the width direction of the mask body" refer to the facing-side end 5 of the first wing part 10A and the facing-side end 5 of the second wing part 10B.

[The composition of the mask body] As shown in FIG. 1 , the mask body 2 has a peripheral surface extending from the veneer side end 5 toward the closed side end 6, and is configured to form an internal space between the wearer's face and the wearer's face when worn by the peripheral surface. 4. That is, the mask main body 2 is configured such that when worn, the face-facing side end portion 5 and its surrounding surface are in contact with the wearer’s face (skin); The wearer's face (skin) is separated to form an inner space 4 with the wearer's face.

Specifically, the mask body 2 includes: a first wing portion 10A forming a half peripheral surface of the mask body 2; and a second wing portion 10B forming the remaining half peripheral surface. As shown in FIG. 1 , the first flap portion 10A and the second flap portion 10B are configured to be deformable into three-dimensional shapes by opening the opening of the veneer-side end portion 5 . Also, the first wing portion 10A and the second wing portion 10B are held in a three-dimensional state, as shown in Figures 1 and 6(a), they have an open annular facing side end 5 toward The linear closed-side end portion 6 has a tapered shape before converging. However, it is not limited thereto, and the closed-side end portion 6 may have a planar bottom.

As shown in Figures 1 and 2, when the mask body 2 is in a state where the mask body 2 is unfolded in such a way that the inner surface faces upward when it becomes a three-dimensional shape (that is, the state of Figure 2 ), the mask body 2 is positioned in the width direction of the mask body 2. The central portion has a longitudinal centerline 100 extending in a direction perpendicular to the width direction. In the mask main body 2 of this embodiment, one side in the width direction with the longitudinal center line 100 as a boundary constitutes the first wing portion 10A, and the other side in the width direction constitutes the second wing portion 10B. Furthermore, Fig. 2 is a plan view of the state where the mask body 2 is unfolded with the inner surface facing upward when it becomes a three-dimensional shape, and Fig. 3 is a cross-sectional view along the line II' in Fig. 2, and Fig. 4 shows The figure of the state of folding in half with the longitudinal center line 100 of the mask body 2 as the center.

As shown in FIG. 2, the first fin portion 10A and the second fin portion 10B are integrally continuous at the longitudinal centerline 100, and have a bilaterally symmetrical shape with the longitudinal centerline 100 of the two fin portions 10A, 10B as the boundary. . In other words, the mask main body 2 includes a sheet-shaped member in which the first wing portion 10A and the second wing portion 10B of the same shape and size are symmetrically arranged. Furthermore, the first fin portion 10A and the second fin portion 10B may be mechanically combined, for example, with the first fin portion 10A and the second fin portion 10B formed separately, instead of being integrally formed from the beginning. The composition.

The mask body 2 is sheet-like, more specifically, formed of a single sheet. The so-called one sheet forming the mask body 2 can be a single structure (single-layer structure), or an integrated multi-layer structure in which a plurality of sheets are laminated. Since the sheet-like member forming the mask body 2 can impart various functions to the mask body 2 by imparting different functions to a plurality of sheets, it is preferable to have a multilayer structure. When using a plurality of sheets, each sheet may be in an embossed or laminated state, or may be in a state where the sheets are separated even though the entire surface is bonded. Also, regarding the bonding of the sheets in a state where the sheets are separated, the edges of the sheets may be bonded along the shape of the mask body 2, or only a part of the edges may be bonded. In addition, as for the bonding method, the following method can be used for bonding.

Hereinafter, in the description of this embodiment, it will be described that the mask body 2 is formed of a single sheet with a multi-layer structure. Specifically, as shown in FIG. 3 , the mask body 2 includes: an inner surface sheet 14 formed as a three-dimensional inner surface; and an outer surface sheet 16 formed as a three-dimensional outer surface. The inner sheet 14 and the outer sheet 16 are formed to have the same shape and the same size, and these inner sheets 14 and outer sheets 16 become one sheet of a multilayer structure obtained by lamination.

In the mask main body 2 of the present embodiment, a cooling body 20 is disposed between the inner sheet 14 and the outer sheet 16 . That is, when both the inner surface sheet 14 and the outer surface sheet 16 contain single-layer or multi-layer nonwoven fabrics as described below, the cooling body 20 is sandwiched by two or more nonwoven fabrics. But not limited thereto, a bag-shaped storage portion can be provided on the inner surface of the mask body 2, and the cooling body 20 can be mounted and detached in the storage portion, or the cooling body 20 can be fixed to the mask by using an adhesive or other fixing method. Composition of the inner surface of the main body 2. In addition, it is also possible to adopt the following configuration, that is, by making the outer surface sheet 16 and the inner surface sheet 14 partially non-adhesive, a plug-in cooling device can be formed between the outer surface sheet 16 and the inner surface sheet 14. The opening of the body 20 and the storage space.

An adhesive (not shown) is applied to the outer sheet 16, and the cooling body 20 and the inner sheet 14 are adhered via the adhesive. As the adhesive, it is preferable to use a hot-melt adhesive, but not limited thereto, and various known fixing methods can be used. For example, adhesives other than hot-melt type, sewing, thermal fusion, etc. can be used, and there is no limitation as long as it can be fixed. In addition, instead of the structure which applies an adhesive agent to the outer surface sheet 16, or in addition to this, the structure which applies an adhesive agent to the inner surface sheet 14 may be employ|adopted.

The material of the inner surface sheet 14 and the outer surface sheet 16 can be the material used in the technical field of the mask covering the mouth and nose, as long as it has a certain degree of air permeability, the type is not particularly limited. For example, fibrous sheets such as nonwoven fabrics, woven fabrics, and papers, resin foam sheets, metal sheets, or combinations thereof can be used. Among them, it is preferable to use a nonwoven fabric from the viewpoint of easiness of processing or economical efficiency. As the fiber material of the non-woven fabric, for example, polyesters such as PET (polyethylene terephthalate); polyolefins such as PE (polyethylene), PP (polypropylene), and ethylene-propylene copolymers; rayon ; Fibers of one or more types of cotton, etc. In addition, as a nonwoven fabric, it is possible to use one or more of the above-mentioned materials by the hot air method, spunbonding method, needle punching method, melt blown method, carding method, thermal fusion method, spunlace method, solvent bonding method, etc. Those obtained from fiber can be single-layer or multi-layer structure. In addition, as a nonwoven fabric, the nonwoven fabric which was given various treatments, such as a chemical process, a mechanical process, and a physicochemical process, etc. can be used depending on the purpose.

In addition, the inner sheet 14 and the outer sheet 16 may be single-layer or multi-layer, and may be a single-layer structure consisting of only one thin sheet, or a multi-layer structure obtained by overlapping two or more thin sheets. . Furthermore, when the mask body 2 adopts a multi-layer structure, the material of the mask body 2 disposed on the side (outside) opposite to the wearer's side when worn and the material of the mask body 2 disposed on the inside when worn can also be used. The constituent materials are different. Specifically, the outer surface sheet 16 arranged on the outside when worn can be selected from a material suitable for imparting shape retention to the mask. On the other hand, the inner surface sheet 14 arranged on the inner side when worn can be selected to improve skin contact. The constituent material of feeling. Moreover, the inner surface sheet 14 and the outer surface sheet 16 may be colored in arbitrary colors, and arbitrary patterns (patterns) may be added by printing or the like. According to such a configuration, texture and design can be improved, and a mask that users like can be obtained.

From the viewpoint of improving the heat transfer efficiency from the wearer's face to the cooling body 20 and easily evaporating water vapor generated from the cooling body 20, the inner surface sheet 14 is preferably a breathable sheet. Specifically, the air permeability of the inner surface sheet 14 is preferably 300 seconds/100 mL or less, more preferably 200 seconds/100 mL or less, and still more preferably 100 seconds/100 mL or less, more preferably 5 seconds/100 mL or less, and most preferably 0 seconds/100 mL. As long as such air permeability is satisfied, the inner surface sheet 14 may have a configuration that does not have air permeability partially.

Here, air permeability is a value measured according to JIS (Japanese Industrial Standards) P8117 (2009 revision), and is defined as the time for 100 ml of air to pass through an area of 6.42 cm ² under a certain pressure . Therefore, a larger numerical value of the air permeability means that it takes time for air to pass through, ie, the air permeability is lower. Conversely, a smaller numerical value of air permeability means higher air permeability. In this way, the numerical value of air permeability and the level of air permeability show an inverse relationship. The air permeability can be measured by Wangyan type air permeability meter. In this manual, air permeability less than 30,000 seconds/100 ml is defined as "breathability", air permeability above 30,000 seconds/100 ml and less than 80,000 seconds/100 ml is defined as "difficult to breathe", and 80,000 seconds Air permeability above 100 ml is defined as "non-breathable".

Also, from the standpoint of increasing the thickness and sheet strength in a balanced manner, the basis weight of the inner surface sheet 14 is preferably 5 g/m ² or more, more preferably 10 g/m ² or more, and still more preferably 15 g /m ² or more, more preferably 20 g/m ² or more. Also, from the standpoint of improving the heat transfer efficiency from the wearer's face to the cooling body 20 and making it easier to evaporate the water vapor generated by the cooling body 20, the basis weight of the inner surface sheet 14 is preferably 60 g/m ² or less, more preferably 50 g/m ² or less, still more preferably 40 g/m ² or less, still more preferably 30 g/m ² or less.

On the other hand, the outer surface sheet 16 can use any material according to the design of the product, and can be any one of a breathable sheet, a poorly breathable sheet, and a non-breathable sheet. When the sheet of the facing cooling body 20 (the sheet oriented toward the non-face side of the cooling body 20 ) is an air-permeable sheet, the outer surface sheet 16 is also preferably an air-permeable sheet. In addition, the outer surface sheet 16 may be stretchable or non-stretchable. The sheet having stretchability may, for example, be a sheet containing elastic fibers as constituent fibers, a sheet containing elastic threads, or a sheet exhibiting stretchability by a structure such as rib knitting.

Also, the basis weight of the outer surface sheet 16 is determined based on the viewpoint of keeping the shape of the mask body 2 stable, keeping the shape of the cooling body 20 stable, and preventing the cooling body 20 from being seen through it from damaging the appearance. From this point of view, the basis weight of the outer surface sheet 16 is preferably at least 10 g/m ² , more preferably at least 20 g/m ² , still more preferably at least 30 g/m 2 , and still more preferably at least 30 g/m ² . Above 40 ^g /m2. Also, from the standpoint of preventing deviation caused by the weight of the mask and making it comfortable to wear, the basis weight of the outer surface sheet 16 is preferably 100 ^g /m or less, more preferably 90 ^g /m or less, More preferably, it is 80 g/m ² or less, and still more preferably 70 g/m ² or less.

As shown in FIG. 4 , the mask body 2 having the above structure is formed by connecting the first flap portion 10A and the second flap portion 10A around the longitudinal centerline 100 in such a way that the inner surface sheet 14 becomes inside. In the state where the flap portion 10B is folded in half, the upper side joint portion 4a formed near the upper edge portion 7 of the longitudinal centerline 100 and the lower side joint portion 4b formed on the side of the lower edge portion 8 of the longitudinal centerline 100 are used to make the first The fin portion 10A and the second fin portion 10B are coupled to each other. That is, by the longitudinal centerline 100, which is an integral continuous part of the first wing part 10A and the second wing part 10B, the upper side joint part 4a is combined with the upper side (nose side) than the longitudinal centerline 100 afterwards, and the upper side joint part 4a is subsequently connected. The closed side end 6 of the mask body 2 is formed by combining the lower side (mandibular side) with the lower side than the longitudinal centerline 100 with the lower joint portion 4b.

Furthermore, the method of combining the first fin portion 10A and the second fin portion 10B is not particularly limited as long as the two fin portions 10A, 10B can be combined in a manner that does not separate, for example, crimping, Arbitrary methods such as heat welding, ultrasonic welding, high frequency welding and adhesives. In addition, in the example shown in the figure, the upper joint part 4a and the lower joint part 4b are arranged in such a way that stripes are formed in the formation area, but it is not limited to this. For example, the entire surface of the formation area can be crimped Various configurations such as continuous sealing configuration.

The shape of the veneer side end portion 5, the closed side end portion 6, the upper edge portion 7 and the lower edge portion 8 of the mask body 2 is adjusted to be easy to fit on the wearer's face (especially the nose, cheek and jaw) As the shape, various arbitrary shapes such as a straight line, an arc shape, and a shape partially having a convex portion or a curved portion can be adopted.

Before using the mask body 2 having the above structure, the first flap portion 10A and the second flap portion 10B are folded in half along the longitudinal center line (closed side end portion 6 ), so they are folded into a planar shape. Furthermore, in this state, the holding part 30 can be folded toward the inside of the mask main body 2 for storage as described below (refer to FIG. 4 ), thereby achieving compactness. On the other hand, the mask body 2 is worn in such a way that when in use, it is unfolded from the edge portion (the facing side end portion 5) on the opposite side to the longitudinal center line 100 (the closed side end portion 6), so that the face mask body 2 The folded inside face becomes the wearer's side face. That is, the mask main body 2 is constituted such that the facing side end 5 of the first wing portion 10A and the facing side end 5 of the second wing portion 10B are pulled apart from each other during use, and the closing side end 6 is arranged in a longitudinal direction. The center line 100 protrudes toward the front of the mask body 2 as the center, so that the mask body 2 becomes a hollow and conformal three-dimensional shape. In the mask body 2 formed in such a three-dimensional shape, the opening of the veneer side end 5 is closely connected along the wearer's face (especially, the nose, cheeks and jaw) through the opening, so there is a gap between the wearer's face and the mask body. The advantage of not easily producing a gap between 2.

In addition, the surface area of the inner surface (hereinafter referred to as "back surface area") in a three-dimensional state is ensured to be large enough to cover the wearer's mouth and nose, and to form an appropriate interior with the wearer's face. The size of the space 4 is preferably greater than 50 cm ² , more preferably greater than 100 cm ² , and still more preferably greater than 140 cm ² , from the viewpoint of reducing dyspnea. Furthermore, from the viewpoint of suppressing the gap with the wearer's face, the back surface area is preferably 400 cm ² or less, more preferably 300 cm ² or less, still more preferably 200 cm ² or less. Here, regarding the back surface area, the weight (g) of the sheet forming the inner surface (that is, the inner surface sheet 14) can be measured in a three-dimensional state, based on the measured weight (g) and the Calculated based on the predetermined basis weight (g/m ² ) of the inner surface sheet 14 .

Also, the mask body 2 is kept in a three-dimensional shape, and the volume of the internal space ⁴ in the state of wearing the human head model HM for volume measurement is preferably 40 cm or more, more preferably 50 cm, from the viewpoint of making breathing easy ³ or more, and more preferably 60 cm ³ or more. Also, from the viewpoint of imparting moderate humidification, the volume of the internal space 4 in this state is preferably 90 cm ³ or less, more preferably 80 cm ³ or less, and still more preferably 70 cm ³ or less.

Furthermore, the internal space 4 formed between the face of the human head model HM for volume measurement is not limited to the closed space formed by the contact between the mask body 2 and the face of the human head model HM for volume measurement. There may be a slight gap between the faces of the human head model HM for measurement. The tiny gap mentioned here refers to the gap that can be produced when wearing the cooling mask 1 in the usual way. Even when there is such a gap, it can be regarded as airtight along the edge of the mask body 2 .

Here, as the "volume measurement human head model HM", a female version human head model (width 151.24 mm, depth 206.82 mm, height 233.01 mm). In addition, the "state maintained in a three-dimensional state" when measuring the volume of the internal space 4 means the three-dimensional state after wearing the cooling mask 1 on the human head model HM for volume measurement (such as the above-mentioned female version of the human head model). Furthermore, the width of the above-mentioned female version of the human head model refers to the straight-line distance between the most prominent points of the left and right helixes, the depth refers to the straight-line distance from the back of the head to the most prominent point of the nose, and the height refers to the most prominent point from the top of the head to the lower jaw. The linear distance of a point along the vertical direction (body axis direction). Therefore, the so-called "maintenance in a three-dimensional state" means, in other words, the three-dimensional distance between the ear hole 32 behind one holding part 30 and the ear hole 32 behind the other holding part 30 by the width (151.24 mm) of the female version of the head model. state. In addition, the cooling mask 1 in the state of wearing the human head model HM for volume measurement has the following dimensions specifically. In the present embodiment, these dimensions are measured using a long claw type vernier caliper (CM-50L) manufactured by Mitutoyo Co., Ltd.

That is, as shown in FIG. 5(a), the cooling face mask 1 is kept in a three-dimensional state (in a state of being worn on the human head model HM for volume measurement), from the apex on the nasal side of the end portion 5 on the veneer side to the mandibular side. The conformal length Lopen in the vertical direction of the apex is preferably at least 80 mm, more preferably at least 90 mm, further preferably at least 100 mm, and still more preferably at least 105 mm. Moreover, it is preferably 140 mm or less, more preferably 130 mm or less, still more preferably 120 mm or less, still more preferably 110 mm or less.

And, as shown in Fig. 5 (b), cooling mask 1 is kept in a three-dimensional state (wearing in the state of volume measurement with human head model HM), and the facing side end portion 5 of the first wing portion 10A and The opening width of the veneer-side end portion 5 of the second flap portion 10B (opening width Wopen during shape retention) is preferably 90 mm or more, more preferably 100 mm or more, further preferably 120 mm or more, still more preferably It is more than 130 mm. Moreover, it is preferably 180 mm or less, more preferably 170 mm or less, still more preferably 160 mm or less, still more preferably 150 mm or less. Here, the "open width Wopen at the time of shape retention" refers to the facing-side end portion 5 of the first wing portion 10A in a state maintained in a three-dimensional state (a state of being worn on the human head model HM for volume measurement). The straight-line distance along the horizontal direction (the direction perpendicular to the vertical direction and the depth direction) between the part farthest from the facing-side end part 5 of the second wing part 10B.

And then, as shown in Fig. 5 (a), cool face mask 1 is kept as the state of three-dimensional shape (the state that is worn on the human head model HM with volume measurement), under the state of from veneer side end 5 to closed side end 6 The conformal depth Dopen along the depth direction is preferably at least 40 mm, more preferably at least 50 mm, further preferably at least 60 mm, and still more preferably at least 70 mm. Moreover, it is preferably 130 mm or less, more preferably 120 mm or less, still more preferably 100 mm or less, still more preferably 90 mm or less. Here, "depth Dopen at the time of shape retention" refers to the most expanded point (expansion point) from the closed side end 6 to the veneer side end 5, along the horizontal direction (the direction perpendicular to the up-down direction and the width direction) The linear distance of the extension.

Moreover, the volume of the internal space 4 is measured using the head model HM (such as the above-mentioned female version of the head model) for volume measurement, reproducing the use state of the cooling mask 1, and converting it into three-dimensional data using a three-dimensional measuring machine.

Furthermore, the volume of the internal space 4 can be obtained by measuring the residual water in the cooling mask 1 as shown in Japanese Patent Application Laid-Open No. 2012-205926, in addition to the above three-dimensional data measurement method. That is, first, a liquid-impermeable film is disposed on the entire inner surface of the mask body 2 so as to have the same shape-keeping length Lopen, shape-keeping opening width Wopen, and The way of deep Dopen when keeping the shape keeps the cooling mask 1 in a three-dimensional shape. Next, dispose the cooling mask 1 kept in a three-dimensional state with the facing side end 5 facing upwards (the closing side end 6 facing downwards), and inject water into the cooling mask 1 inside. Put the face down of the human head model HM for volume measurement close to the cooling mask 1 filled with water as described above, and put the holding part 30 on the ear of the human head model HM for volume measurement. Thereafter, the human head model HM for volume measurement is removed from the cooling mask 1, and the remaining water volume in the cooling mask 1 is measured. The method of measuring the amount of water remaining in this cooling mask 1 can also obtain approximately the same value as the method of measuring the three-dimensional data using the above-mentioned female version of the human head model. Therefore, it is difficult to switch according to the shape of the cooling mask 1. In the case of three-dimensional data, the volume of the internal space 4 can also be measured by the method disclosed in Japanese Patent Application Laid-Open No. 2012-205926.

In addition, the volume of the internal space 4 can be calculated|required by calculation as follows. That is, it can be obtained by making the coolness from such that the shape-keeping length Lopen, the shape-keeping opening width Wopen, and the shape-keeping depth Dopen are the same as those in the case of wearing the human head model HM for volume measurement. The volume of the cooling mask 1 when the mask 1 is kept in a three-dimensional state (the volume of the cooling mask 1 when not wearing it), minus the volume that enters the inside of the cooling mask 1 when the cooling mask 1 is worn on the human head model HM for volume measurement The volume of the site of the human head model HM for measurement (the volume of the insertion site of the human head model HM for volume measurement).

Here, the volume of the insertion site of the human head model HM for volume measurement is proportional to the circumference of the opening of the face-facing side end 5 when the cooling mask 1 is kept in a three-dimensional state, and can be obtained by the following method. That is, by the same steps as the method for measuring the amount of water remaining in the above-mentioned cooling mask 1, a liquid-impermeable film is arranged on the entire inner surface of the mask body 2, and the cooling mask 1 is kept in a three-dimensional shape, and filled with water. internal. By measuring the amount of water at this time, the "volume of the cooling mask 1 when not wearing it" is measured. In addition, by the same procedure as the method for measuring the remaining water in the cooling mask 1, the remaining water after touching the face of the human head model HM for volume measurement is measured. Then, the difference between the amount of water before and after the face of the human head model HM for volume measurement is obtained by calculation, and the difference is taken as the "volume of the insertion site of the human head model HM for volume measurement".

[Structure of holding part] The holding parts 30 are joined to both ends in the width direction of the mask body 2 to hold the mask body 2 on the wearer's face. An example of the holding unit 30 will be described below.

In the present embodiment, the holding part 30 is a hanger that can be installed on the wearer's ear, and is provided in pairs at the left and right ends of the mask body 2 in the longitudinal direction (horizontal width direction). As shown in Figure 2, the holding part 30 has an ear hanging part body 31, an ear hanging hole 32 that can be inserted into the wearer's ear, and a sealing part 39 that joins the mask body 2 and the ear hanging part main body 31 (see Figure 3 and Figure 3). 6(b)).

The ear hanging part body 31 has an upper side, a lower side, an open edge of the open side of the holding part 30 that is not joined to the mask body 2 , and a joint edge joined to the facing side end 5 of the mask body 2 . In this embodiment, the ear-hanging part main body 31 is planar and forms a substantially quadrangular shape with rounded corners. Specifically, the upper side and the lower side are tapered from the joining edge to the opening edge, and are bent at the part connected to the opening edge.

In this embodiment, the total length (mm) of the pair of holding portions 30 in a direction parallel to the width direction of the mask body 2 is preferably equal to or less than the width (mm) of the mask body 2 . In the present embodiment, the holding portion 30 is a pair, therefore, the length (mm) of a holding portion 30 in a direction parallel to the lateral width direction of the mask body 2 is less than two inches through the longitudinal centerline 100 (closed side end portion 6). One-half the width of the mask body 2 (mm). Thereby, when the cooling mask 1 is folded in half at the longitudinal center line, the holding portion 30 overlaps with the mask body 2 and is unnaturally folded into the inside of the mask body 2, which can suppress the increase in thickness and the entanglement of the holding portions 30, and can be more Compactly stores the cooling mask1. Also, as shown in FIG. 6(b), when the holding portion 30 is folded to the inside of the mask body 2, the holding portion 30 is less likely to be polluted, which can further improve hygiene.

The holding part 30 can be made of the same material as the mask body 2, or it can be a different material. From the viewpoint of improving the fit feeling of the mask body 2, it is preferably a stretchable material, and it should be easy to follow the mask body 2. Materials that elongate in the transverse direction. In this embodiment, the holding part 30 is preferably made of non-woven fabric, more preferably a stretchable non-woven fabric. From the viewpoint of the bondability with the mask main body 2, it is preferable to contain a thermoplastic resin as a constituent fiber. Furthermore, it is more preferable to contain polypropylene from a viewpoint of processing easiness. Moreover, the holding part 30 may further include a thermoplastic resin other than polypropylene, for example, it is preferable to further include one selected from the group consisting of urethane, polyethylene, and polyethylene terephthalate. As above, it is more preferable to use a synthetic fiber containing urethane. With such a configuration, the flexibility and conformability of the holding portion 30 can be efficiently expressed, and sufficient strength can be expressed when the cooling mask 1 is used.

Furthermore, as long as the holding portion 30 is capable of holding the mask body 2 in front of the wearer's face, it is not limited to the above-mentioned planar hanging ears, and any hanging ears that can be used for a mask can be used arbitrarily, for example, as shown in FIG. 10 . The rubber rope-shaped hanging ear 30' (holding part) shown, or one or the other spanning from the facing side end 5 of the first wing part 10A to the facing side end 5 of the second wing part 10B Various configurations such as a plurality of tape bodies (not shown). Moreover, the holding part 30 is not limited to the structure of the separate member joined to the both ends of the width direction of the mask main body 2, The structure formed integrally with the mask main body 2 may be sufficient.

[Composition of cooling body] As shown in FIG. 7 , the cooling body 20 has a water-retaining layer 24 that retains water, and is disposed on the mask body 2 in such a manner that at least a part of it is in direct or indirect contact with the wearer's face when worn.

Specifically, the form of the cooling body 20 may, for example, be the forms of (i) and (ii) shown below. (i) One form of the cooling body 20 may, for example, be a form of a sheet having a water retention layer 24 . In this case, the water-retaining layer 24 is obtained by applying a slurry to one surface of the sheet, and the slurry is obtained by mixing water with a powdery or fibrous water-retaining material. The sheet may be any one of the first sheet 26 , the second sheet 28 , and the base material layer 22 described later. (ii) Moreover, as another form of the cooling body 20, a form in which the shape of the water-retaining material itself is held and used as the water-retaining layer 24 can be exemplified. In this case, it can be obtained by cutting the water-retaining material into a desired size and containing water. In addition, in this specification, the so-called water-retaining material means one having water-retaining ability (water-absorbing function or water-removing function), as long as it can hold water, the type is not particularly limited, but it is preferably one excellent in steam heat dissipation.

In any one of the above (i) and (ii), the cooling body 20 may have the following configuration: the cooling body 20 may be enclosed in a bag formed by joining the peripheral parts of the first sheet 26 and the second sheet 28 to each other. There are water retention materials. In the cooling body 20 , by making the first sheet 26 and the second sheet 28 form a bag in this way, accidental falling off of the constituent materials can be prevented, the manufacturing efficiency can be further improved, and the amount of steam can be adjusted appropriately.

As one form of the cooling body 20 , it is a rectangular flat body, and includes a base material layer 22 and a water retention layer 24 laminated on the base material layer 22 . Moreover, the cooling body 20 further includes a first sheet 26 and a second sheet 28 arranged to face the first sheet 26 via the base material layer 22 and the water retention layer 24 .

(water retention layer) In the case of the form of (i) above, the water retention layer 24 has a water retention material dispersed on the base material layer 22 and water retained in the water retention material. As a water retention material, 1 type or 2 or more types selected from carbon components, fiber materials, water-absorbing powder, etc. are mentioned, for example.

Also, in the case of the form of (ii) above (when the water-retaining layer 24 also serves as a water-retaining material), as the water-retaining layer 24 and the water-retaining material, for example, various fiber materials can be used, and hydrophilic fibers, Or a blend of hydrophilic fibers and synthetic fibers. As the fiber material, for example, one type or two or more types selected from polyethylene, polypropylene, polyester, rayon, cotton, pulp, and the like may be mentioned.

The carbon component has water retention capacity, and for example, one or two or more selected from activated carbon, acetylene black, and graphite can be used. Moreover, it is more preferable to use a hydrophilic fiber, especially a cellulose fiber as a fiber material. As the cellulose fibers, chemical fibers (synthetic fibers) or natural fibers can be used. Furthermore, as water-absorbent powder other than the above, 1 type or 2 or more types selected from vermiculite, sawdust, silica gel, calcium silicate, zeolite, pulp powder, and a water-absorbent polymer are mentioned.

The water-absorbing polymer may, for example, be a hydrophilic polymer having a cross-linked structure capable of absorbing and retaining a liquid 20 times or more its own weight. The shape of the water-absorbing polymer may be any of spherical, massive, grape-like and fibrous. The mass average particle diameter of the water-absorbing polymer is preferably at least 1 μm, more preferably at least 10 μm, and still more preferably at least 100 μm. Also, the average particle diameter of the water-absorbing polymer is preferably at most 1000 μm, more preferably at most 700 μm, and still more preferably at most 500 μm. The particle size of the water-absorbing polymer is measured by the laser diffraction method.

Specific examples of the water-absorbing polymer include, for example, starch, cross-linked carboxymethylated cellulose, polymers or copolymers of acrylic acid or alkali metal acrylic acid salts, polyacrylic acid and its salts, and polyacrylic acid salts. One or more of the group consisting of graft polymers. Among these, polymers or copolymers of acrylic acid or alkali metal acrylic acid salts, polyacrylic acid and its salts, and polyacrylate grafted polymers are preferred in terms of maintaining the amount of water carried within a specific range. .

As an aspect of the water-retaining layer in the case of using a water-absorbent polymer, for example, an aspect such as (a) having a single layer formed by sandwiching a water-absorbent polymer between two moisture-permeable sheets one layer; (b) the water-absorbent polymer is directly laminated on the substrate layer 22 in a single-layer configuration; or (c) a laminated structure with the first water-absorbent polymer layer and the second water-absorbent polymer layer is adopted, the In the first water-absorbent polymer layer, the water-absorbent polymers are adjacent to each other in a layered arrangement, and the second water-absorbent polymer layer is adjacent to the first water-absorbent polymer layer, between the two moisture-permeable sheets. It is formed by sandwiching powder of water-absorbent resin.

The water retained in the water-retaining material can come from aqueous electrolyte solutions (such as aqueous solutions of alkali metals, alkaline earth metals, etc.), and, for example, ethanol, methyl p-hydroxybenzoate, ethyl p-hydroxybenzoate, and propyl p-hydroxybenzoate can also be added. Preservatives, bacteriostats, fungicides or antioxidants such as esters, butylparaben, phenoxyethanol, 1,3-butanediol, propylene glycol, dipropylene glycol, etc.

In terms of improving the cooling effect of the cooling mask 1 at the initial stage of wearing, and improving the continuity of the steam released from the cooling body 20, and maintaining the cooling effect of the cooling body 20 for a long time, the initial content of the water retained in the water-retaining layer 24 Preferably, it is 1 mass % or more of the maximum water absorption of the water retention layer 24, More preferably, it is 2 mass % or more, More preferably, it is 3 mass % or more, Still more preferably, it is 4 mass % or more. Also, from the perspective of suppressing the weight of the cooling body 20 and preventing the cooling mask 1 from shifting and falling relative to the face, the initial content of water is preferably below 20% by mass of the maximum water absorption of the water-retaining layer 24, more preferably 15%. Mass % or less, More preferably, it is 10 mass % or less, Still more preferably, it is 7 mass % or less.

(Measurement method of maximum water absorption) The maximum water absorption of the water retention layer 24 can be measured by the following method, for example. That is, first, a 250-mesh (61 μm) nylon woven bag (100 mm×150 mm) and the sample were weighed, and the tare weight of the mesh bag and the weight of the sample were measured. Next, put the sample into the above-mentioned mesh bag, put it upright into a 300 mL beaker, add 300 mL of ion-exchanged water in a way that does not directly contact the mesh bag, soak for 30 minutes, and make it fully swell. Thereafter, hang for 10 minutes, control to remove moisture, and use a chemical balance to weigh to two decimal places. Then, using the "total weight of the mesh bag", "tare weight of the mesh bag" and "weight of the sample" obtained above, the maximum water absorption was obtained by the following formula. "Maximum water absorption" = "Total weight of mesh bag" - "Tare weight of mesh bag" - "Sample weight"

From the above point of view, the initial content of water retained in the water-retaining layer 24 (that is, the water content of the packaging bag 200 such as an oxygen barrier bag immediately after opening) is preferably more than 0.04 ml per 1 cm ² on average, more preferably an average per cm 1 cm ² is more than 0.08 ml, and more preferably it is more than 0.10 ml per 1 cm ² on average, and it is preferably less than 0.40 ml per 1 cm ² on average, more preferably less than 0.30 ml per 1 cm ² on average, Furthermore, it is more preferably 0.25 ml or less per 1 cm ² on average.

(substrate layer) The base layer 22 is provided so as to cover the surface of the water retention layer 24 opposite to the first sheet 26 . When the base material layer 22 is placed on the face side when worn, it can promote the generation of steam to the non-face side (outside the mask body 2), and the mask body 2 can be raised by the accompanying heat of vaporization. Inner cooling effect. In addition, by suppressing the evaporation of the water in the water-retaining layer 24 to the face side, it is possible to suppress the stuffiness of the face caused by the steam released from the cooling body 20 . On the other hand, when the base material layer 22 is arranged so that it is not on the face side when worn, it can promote the generation of steam toward the face side, and increase the heat brought to the face by the accompanying heat of vaporization. Cooling effect. In addition, by suppressing the evaporation of moisture in the water-retaining layer 24 to the non-face side, the continuity of the steam released from the cooling body 20 can be improved, so the cooling effect of the cooling body 20 can be maintained for a long time.

Even when the above-mentioned base material layer 22 is arranged on the face side and the non-face side, it can be appropriately changed to the non-face side (outside of the mask body 2) or the face according to the air permeability of the base material layer 22. side steam generation. For example, when it is desired to promote the generation of steam by the heat of vaporization accompanied by the base material layer 22, and further improve the cooling effect in the mask body 2, as the base material layer 22, an air permeability of 50 seconds/100 mL can be used. or less, preferably less than 10 seconds/100 mL, more preferably less than 1 second/100 mL. Also, when wanting to improve the continuous effect of the cooling time in the face or mask body 2, non-breathable (air permeability is more than 80000 seconds/100 mL) or impermeable breathability (air permeability is 30000 seconds/100 mL) can be used. mL or more) sheets. The air permeability of the substrate layer 22 is preferably at least 50,000 seconds/100 mL, more preferably at least 80,000 seconds/100 mL. Furthermore, when the base material layer 22 is arranged on the non-face side, the productivity when the cooling body 20 is installed on the mask main body 2 is improved by laminating the water retention layer 24 on the base material layer 22 .

As such base material layer 22, a synthetic resin film can be used, for example, a polyethylene film, a polyethylene terephthalate film, etc. are mentioned. The synthetic resin film may be a single layer or a multi-layer laminate. Nonwoven fabric, paper or film, or a laminate of two or more of these can be used.

(first sheet 26 and second sheet 28) At least one of the first sheet 26 and the second sheet 28 may be an air-impermeable (air permeability of 80,000 seconds/100 mL or more) or air-impermeable (air permeability of 30,000 seconds/100 mL or more) sheet. In addition, an air-permeable sheet can be used for the other of the first sheet 26 and the second sheet 28 .

The air permeability of the non-breathable or poorly breathable sheet is preferably at least 50,000 seconds/100 mL, more preferably at least 80,000 seconds/100 mL. By using this kind of non-breathable or impermeable sheet for at least one of the first sheet 26 and the second sheet 28, the direction and amount of moisture evaporation of the water-retaining layer 24 can be controlled, so that the cooling effect can be improved. The continuity of the steam released by the cooling body 20 can maintain the cooling effect of the cooling body 20 for a long time.

As such an air-impermeable or air-impermeable sheet, for example, a synthetic resin film may be used alone or by laminating a plurality of layers. Also, depending on the application, the non-breathable or impermeable air-permeable sheet may be layered with a nonwoven fabric or the like on the outer surface to improve texture. The non-woven fabric can be selected from needle-punched non-woven fabrics, air-through non-woven fabrics, and spun-bonded non-woven fabrics, and is preferably a laminated film made of polyethylene film and pulp sheet. Furthermore, as long as the non-breathable or poorly breathable sheet has low air permeability as a whole, it may partially have air permeability.

The air permeability of the air-permeable sheet is preferably 350 seconds/100 mL or less, more preferably 100 seconds/100 mL or less from the viewpoint of releasing the generated steam slowly without excessive humidification. By using such an air-permeable sheet for one of the first sheet 26 and the second sheet 28, the cooling effect on the face can also be enhanced by the heat of vaporization or heat dissipation accompanying water evaporation.

As such an air-permeable sheet, for example, a porous sheet made of synthetic resin is preferable. Specifically, a stretched film containing polyethylene or polypropylene, etc. may be mentioned. When using the porous sheet, a non-woven fabric can also be layered on the outer surface of the porous sheet to improve the texture of the sheet. As a nonwoven fabric, a needle-punched nonwoven fabric, an air-through nonwoven fabric, a spun bonded nonwoven fabric, etc. are mentioned, for example. It may be a sheet through which water cannot pass but oxygen or water vapor may pass, and if leakage resistance is considered, it may be a sheet other than a porous sheet. For example, as a breathable sheet, artificial fibers such as polyamide, vinylon, polyester, rayon, cellulose acetate, acrylic resin, polyethylene, polypropylene, and polyvinyl chloride can be used; Woven, non-woven, paper, synthetic paper, etc., made of one or more kinds of natural fibers such as silk and animal hair mixed.

Preferably, one of the first sheet 26 and the second sheet 28 is air-permeable, and the other is non-air-permeable or impermeable-air-permeable. In this case, it may be appropriately aligned toward the face side or the non-face side depending on the purpose. For example, a breathable sheet may be used on the face side, and a non-breathable or poorly breathable sheet may be used on the non-face side. In this way, the heat absorption effect on the face can be improved, so the cooling effect of the cooling mask 1 at the initial stage of wearing can be improved, and a stable cooling feeling with less temperature fluctuation can be provided for a long time.

On the other hand, when a non-breathable or poorly breathable sheet is used on the face side and a breathable sheet is used on the non-face side, the amount of steam released into the internal space 4 of the mask body 2 can be suppressed. , so the humidity in the inner space 4 can be suppressed, and damp heat can be alleviated. Also, in this case, the cooling effect of heat of vaporization to the outside of the cooling mask 1 (outside atmosphere) can be improved, so the cooling body 20 can be used to further reduce the temperature in the mask body 2 .

(fragrance ingredient) The cooling body 20 can also be prepared, for example, within the range that does not interfere with the effect of the present invention, or add fragrance ingredients described in "Synthetic Fragrance Chemistry and Commercial Knowledge" (by Kazuto Fujimoto, Chemical Industry Daily Co., Ltd.) to any part. Specific examples include terpenes such as myrcene, farnesene, pinene, limonene, camphene, phellandrene, terpinene, terpinolene, p-cymene, cedrene, and caryophyllene. Hydrocarbons; Cinnamic aldehyde, 2-methyl-3-(4-tert-butylphenyl)-propanal, 4-(4-hydroxy-4-methylpentyl)-3-cyclohexene-1 -Aldehydes such as formaldehyde and vanillin; benzyl alcohol, phenylethyl alcohol, 2-methyl-4-phenylpentanol (pamplefleur), dimethylbenzylmethanol, phenylhexanol (3-methyl-5- Aromatic alcohols such as phenylamyl alcohol); phenols such as anethole and eugenol; lactones such as γ-nonanolide and γ-undecylactone.

(cooling ingredient) Regarding the cooling body 20, from the viewpoint of further imparting a refreshing feeling, a cooling component may be formulated or added to an arbitrary part within the range that does not hinder the effect of the invention. The cooling component preferably contains an agonist that acts on TRPM8 as a cold receptor in a temperature-sensitive TRP (Transient Receptor Potential) channel existing in the body. For example, menthol such as L-menthol and DL-menthol, menthol, eucalyptol, menthyl glyceryl ether, menthone glycerin acetal, butylcyclohexanone, isomenthol, trimethyl Isopropylbutaneamide, menthoxypropylene glycol, camphor, etc., can also use peppermint oil, peppermint oil, spearmint oil, eucalyptus oil and other plants or essential oils containing TRPM8 agonists. These may be used alone or in combination of two or more. Among them, from the point of view of comfort, effectiveness, and safety during use, it is preferably selected from menthol, menthyl lactate, menthyl lactate, menthyl succinate, and trimethylisopropylbutanamide. 1 or more of menthol, menthoxypropylene glycol, and camphor, more preferably menthol.

(Water vapor generation of the cooling body) Regarding the cooling body 20 having the above configuration, the water vapor generation toward the face side of the wearer is preferably 2.5 mg/(cm ² ∙h) or more, more preferably 5.0 mg/( cm ² ∙h) or more, more preferably 7.5 mg/(cm ² ∙h) or more. By setting such a water vapor generation amount, the vaporization of water can be used to effectively cool the skin.

Also, regarding the cooling body 20, the amount of water vapor generated is preferably 20.0 mg/(cm ² ∙h) or less, more preferably 15.0 mg/(cm ² ∙h) or less, further preferably 10.0 mg/(cm ² ∙h) ∙h) or less. By setting such a water vapor generation amount, the humidity in the internal space 4 can be suppressed, and damp heat can be reduced.

The amount of water vapor generated toward the wearer's face is a value measured as follows using the measuring device 40 shown in FIG. 11 . Furthermore, in the following description, the cooling body 20 sealed in a water-impermeable packaging bag 200 or the like will be used as an object, and the water-impermeable packaging bag 200 or the like will be unsealed, and the steps from unsealing to installation in FIG. 11 will be described. The time required for the measurement device 40 shown above, that is, the time point 5 seconds after the start of unsealing is defined as the "moisture vapor generation start time point". Measuring device 40 shown in Figure 11 has: aluminum measuring chamber (volume 4.2 L) 41; Inflow path 42, it is for dehumidified air (humidity does not reach 2%, flow rate 2.1 L/min) to flow into the lower part of measuring chamber 41; Outflow A path 43 for air to flow out from the top of the measurement chamber 41; an inlet temperature-hygrometer 44 and an inlet flowmeter 45 are arranged on the inflow path 42; an outlet temperature-hygrometer 46 and an outlet flowmeter 47 are arranged on the outflow path 43; and a thermometer (thermistor) 48, which is installed in the measurement chamber 41. As the thermometer 48, one with a temperature resolution of about 0.01° C. is used. Furthermore, the amount of steam generation in this specification refers to the total amount measured from the "start time of water vapor generation" of the cooling body 20 to 1 hour later.

Furthermore, the above-mentioned water vapor generation of the cooling body 20 can be realized by adjusting the following performances within the composition and value range of the above-mentioned elements. The type of material and the initial content of water, etc.; and the air permeability, which is based on the water separation rate specified by the viscosity and boiling point of the water held in the water-retaining layer 24, the orientation of the first sheet 26, the air permeability, etc. And specific out.

(Configuration of Cooling Body) As mentioned above, the cooling body 20 having the above configuration is arranged on the mask body 2 so that at least a part of the cooling body 20 is in direct or indirect contact with the wearer's face when the mask body 2 covers the wearer's mouth and nose (when worn). In this embodiment, the cooling body 20 is disposed between the inner surface sheet 14 and the outer surface sheet 16 of the mask body 2, so that the cooling body 20 separates the inner surface sheet 14 from the wearer's face when worn. indirect contact.

But it is not limited to this, it can be made to store the cooling body 20 in the bag-shaped storage part provided on the inner surface of the mask body 2, so that the cooling body 20 can be in direct contact with the wearer's face through the storage part. The cooling body 20 is fixed on the inner surface of the mask body 2 by an adhesive or the like, so that the cooling body 20 is in direct contact with the wearer's face. In addition, another member or the like may be interposed between the wearer's face and the cooling body 20 within a range where heat conduction between the wearer's face and the cooling body 20 is impossible.

Preferably, the range (contact range) of the cooling body 20 that is in direct or indirect contact with the face of the wearer (for example, through a sheet) is 1/2 of the surface area of the side of the cooling body 20 that is opposite to the face of the wearer. More than 10%. Specifically, in terms of improving the heat transfer efficiency from the wearer's face to the cooling body 20, and improving the heat absorption efficiency of the heat of vaporization of water heated by the body temperature of the wearer, the cooling body 20 and the wearer's face Among the surface areas of the facing side, the ratio of the range (contact range) that is in direct or indirect contact with the wearer's face is preferably at least 10%, more preferably at least 20%, and still more preferably at least 30%. Also, from the viewpoint of prolonging the duration of cooling, the ratio of the contact area of the cooling body 20 is preferably 100% or less, more preferably 80% or less, and still more preferably 50% or less.

(Measurement method of contact area) Here, the contact area of the cooling body 20 can be measured by the following two methods, for example. First, the first method is a method of calculating the contact area of the cooling body 20 from the basis weight of the inner surface sheet 14 . Specifically, first, the surface area of the cooling body 20 on the side facing the wearer's face is defined as A ₁ , based on the basis weight of the inner surface sheet 14, the ratio of the A ₁ portion of the inner surface sheet 14 is calculated. Weight WR ₁ . Afterwards, the cooling face mask 1 that uses the cooling body 20 is made, and the activated carbon is attached to the female version of the human head model that is modeled according to the female version of the average head data (the latest data at the time of application) manufactured by Digital Human Technology Co., Ltd. (Width about 18 cm, depth about 21 cm, height about 26 cm). Then, wear the cooling mask 1 on the female version of the human head model, and remove the cooling mask 1 after wearing it for 10 minutes. Thereafter, the part of the inner surface sheet 14 laminated with the cooling body 20 is cut, and the inner surface sheet 14 corresponding to the position of the cooling body 20 is taken out. Then, the part to which activated carbon did not adhere was cut out, and the weight was measured, and it was set as _WR2 . Then, based on the "weight WR ₁ of the A ₁ portion of the inner sheet 14 (the portion of the inner sheet 14 laminated with the cooling body 20)" and "A ₁ of the inner sheet 14" obtained in this way, Among them, the weight WR ₂ of the portion to which activated carbon is not adhered is calculated according to the following formula, "the weight WR ₃ of the portion to which activated carbon is adhered (that is, the contact portion) in A ₁ of the inner surface sheet 14 ". The weight WR3 _of the contact portion obtained in this way is the weight of the inner surface sheet 14 alone, excluding the weight of activated carbon. "WR ₁ - WR ₂ = weight WR ₃ of the inner surface sheet 14 of the activated carbon attachment part (contact part)" Thereafter, the area corresponding to the weight WR ₃ is calculated based on the basis weight of the inner surface sheet 14, and This area is set as the contact area of the cooling body 20 . In addition, at the time of measurement, you may use the powder etc. which have a color different from the inner surface sheet 14 instead of activated carbon, for example.

Also, the second method is a method of calculating the contact area of the cooling body 20 using three-dimensional shape data. Specifically, firstly, a light-shielding substance is applied to the surface of a female human head model with a hollow cavity inside using the average human head data (the latest data at the time of application) manufactured by Digital Human Technology Co., Ltd., and the human head model Mark the 3 points on the inner side (in the cavity) on the left and right sideburns and the throat as the reference point. Thereafter, using Artec Eva (manufactured by ARTEC 3D Co., Ltd.), 3D data (reference 3D data) from the inside of the human head model was acquired. Next, wear the partly colored cooling mask 1 provided with the cooling body 20 on the transparent human head model with the reference point set at the same position, and obtain the three-dimensional data (measured three-dimensional data) from the inside of the human head model. Using the three-dimensional image analysis software 3D-RUGLE (manufactured by Medic Engineering Co., Ltd.), the two 3D images (reference three-dimensional data and actual measurement three-dimensional data) obtained in the above manner are superimposed according to the above-mentioned reference point, and the cooling body 20 is specified. The contact portion of the surface of the head model. When specifying the contact part, considering that the contact part will change due to movement in the case of the human body, the colored part of the cooling mask 1 (the part provided with the cooling body 20) and the gap distance from the surface of the human head model The portion that converges within the range of −0.5 mm to 0.5 mm is defined as the contact portion of the cooling body 20 . Then, the area of the contact portion of the heat sink 20 specified in this way is calculated, and this is set as the contact area of the heat sink 20 . Also by the second method of performing calculations using three-dimensional shape data in this way, substantially the same results as those of the above-mentioned first method can be obtained.

As shown in FIG. 2 , the cooling body 20 of the present embodiment is disposed symmetrically on both the first fin portion 10A and the second fin portion 10B with the longitudinal center line 100 as the boundary. In the illustrated example, one cooling body 20 is provided on each of the left and right fins, and there are two cooling bodies 20 in total.

Each cooling body 20 is arranged at a predetermined distance from the longitudinal centerline 100 so as to mainly come into direct or indirect contact with the wearer's cheeks when the mask body 2 covers the wearer's mouth and nose. Specifically, each cooling body 20 is preferably arranged such that the distance D1 between the longitudinal centerline 100 of the mask body 2 and the end of each cooling body 20 on the side of the longitudinal centerline ₁₀₀ becomes 5 mm or more, more preferably It is arranged so that it becomes 10 mm or more. Also, from the standpoint of improving the cooling sensation on the face of the wearer, the distance D1 is preferably within the range in which each cooling body 20 is accommodated in the _first fin portion 10A and the second fin portion 10B. , as large as possible. Here, the distance D ₁ refers to the linear distance between the end of each cooling body 20 closest to the longitudinal centerline 100 and the longitudinal centerline 100 along the direction perpendicular to the longitudinal centerline 100 .

In addition, each cooling body 20 is preferably arranged such that the distance D2 between the end portion of each cooling body 20 on the facing side end portion 5 and the facing side end portion ₅ becomes 28 mm or less, more preferably It is configured to be 23 mm or less. Also, from the standpoint of improving the cooling sensation on the face of the wearer, the distance D2 is preferably within the range in which each cooling body ₂₀ is accommodated in the first fin portion 10A and the second fin portion 10B. , as small as possible. Here, the distance D2 refers to the straight _- line distance between the end of each cooling body 20 closest to the veneer-side end 5 and the veneer-side end 5 along the direction perpendicular to the longitudinal centerline 100 . Furthermore, as shown in FIG. 2 , when the end portions on the veneer side end 5 side of each cooling body 20 and the veneer side end 5 are not parallel to each other, the linear distance of the farthest part can be set as is the distance D ₂ .

Furthermore, from the standpoint of bringing the cooling body ₂₀ into contact with the wearer's cheeks and vaporizing moisture by utilizing one's own body temperature, the distance D2 is preferably 50% or less of the width _D3 of each wing portion 10A, 10B, More preferably, it is 40% or less, More preferably, it is 30% or less. Also, from the viewpoint of properly vaporizing moisture and avoiding excessive humidification, the distance D2 is preferably more than ₁₀ % of the width _D3 of each fin portion 10A, 10B, more preferably more than 15%, and furthermore Preferably more than 20%. Here, the so-called lateral width D ₃ of each wing portion 10A, 10B refers to the lateral width of the mask body 2 which is one-half of the longitudinal centerline (closed side end 6), specifically, refers to the longitudinal center The linear distance between the line (closed side end 6 ) and the facing side end 5 along the direction perpendicular to the longitudinal centerline 100 . Furthermore, as shown in Figure 2, when the longitudinal centerline (closed-side end 6) and the veneer-side end 5 are not parallel to each other, the straight-line distance of the farthest part can be set as the width _D3 .

Furthermore, the cooling body 20 is preferably such that the total area of all the cooling bodies 20 provided on the mask body 2 has a predetermined occupancy with respect to the area of the entire surface of the mask body 2 on the wearer's side. Specifically, the ratio of the total area occupied by the cooling body 20 with respect to the entire surface area of the wearer's side of the mask body 2 is preferably 40% or more from the viewpoint of easily and effectively cooling the inside of the mask, more preferably The best is above 42%. Moreover, from the viewpoint of preventing excessive humidification, the ratio is preferably at most 80%, more preferably at most 65%. Furthermore, in this embodiment, the area of the entire surface of the wearer's side of the mask body 2 refers to the surface area of the inner surface of the mask body 2 in a three-dimensional state, that is, the above-mentioned "back surface area".

Furthermore, the planar shape of the cooling body 20 is not particularly limited, and may also be circular, polygonal, etc. From the viewpoint of manufacturing efficiency, ease of use, and cooling effect, it is preferably a quadrangle such as a rectangle or a substantially square, and more preferably a substantially square from the viewpoint of ease of use. Also, for example, cooling body 20 is preferably provided with one or more than two cooling bodies in the cooling mask 1, preferably one or more than two are arranged in each fin, more preferably arranged at both left and right fins, but not limited to this. Furthermore, when a plurality of cooling bodies 20 are provided, the cooling properties of the plurality of cooling bodies 20 may be the same or different, but are more preferably the same.

(10-hour average relative humidity and 10-hour average temperature) According to the cooling mask 1 including the cooling body 20 having the above structure and water vapor generating performance, the humidity of the inner space 4 can be suppressed for a long time, and the wearer's face can be cooled for a long time.

Specifically, the cooling mask 1 equipped with the following cooling body 20 can suppress the 10-hour average relative humidity of the internal space 4 (that is, the 10-hour average relative humidity of the area where the cooling body 20 is not in direct or indirect contact) to less than 80%. , The cooling body 20 is obtained by using a breathable sheet for the first sheet 26 and aligning it on the face side, and using a non-breathable or impermeable air-permeable sheet for the second sheet 28 . In addition, the 10-hour average temperature of the portion of the cooling body 20 that is in direct or indirect contact with the wearer's face can be suppressed to 29° C. or lower.

More specifically, the 10-hour average relative humidity of the cooling mask 1 in this case is more preferably less than 90%, and more preferably less than 80%. In addition, the 10-hour average temperature of the cooling mask 1 in this case is more preferably 29.5° C. or lower, and more preferably 29.0° C. or lower.

Also, the cooling face mask 1 equipped with the following cooling body 20 can suppress the 10-hour average relative humidity of the internal space 4 to less than 50%. It is aligned on the face side, and an air-permeable sheet is used for the second sheet 28 . In addition, the 10-hour average temperature of the portion of the cooling body 20 that is in direct or indirect contact with the wearer's face can be suppressed to 28.0° C. or lower.

More specifically, the 10-hour average relative humidity of the cooling mask 1 in this case is more preferably less than 60%, and more preferably less than 50%. Also, in this case, the 10-hour average temperature of the cooling mask 1 is more preferably 28.5° C. or lower, and more preferably 27.5° C. or lower.

(Measurement method of temperature and relative humidity) Here, temperature and relative humidity can be measured by the following methods. That is, the nose of the female version of the human head model (width about 18 cm, depth about 21 cm, height about 26 cm) modeled based on the average head data of the female version produced by Digital Human Technology Co., Ltd. (the latest data at the time of application) A humidity sensor is placed on the upper part (cooling body non-contact part), and a temperature sensor is placed on the cheek part (cooling body contact part), which is fixed with medical tape so that it does not move. Then, under the environment of 30° C. and 40% RH, the cooling mask 1 was worn on the female version of the human head model, and the temperature and humidity changes every 30 seconds were measured. In addition, LT-ST08-12 (manufactured by Gram Corporation) can be used as a temperature sensor, and Hygrochron (manufactured by KN LABORATORIES) can be used as a humidity sensor.

[Advantages of the cooling mask of the first embodiment] As described above, the cooling mask 1 of the first embodiment is provided with a mask body 2 covering at least a part of the wearer's face, and a cooling body 20 provided on the mask body 2. The internal space 4 is formed between the face of the person, and the cooling body 20 has a water-retaining layer 24 that retains water, a first sheet 26, and a second sheet that is arranged in a way that the water-retaining layer 24 is opposite to the first sheet 26. material 28, and is configured on the mask body 2 in such a way that at least a part of it is in direct or indirect contact with the face of the wearer when worn. material composition.

Moreover, according to the cooling mask 1 having such a structure, as described above, the heat conduction from the wearer's face to the cooling body 20, the heat of vaporization caused by the water evaporation of the cooling body 20, and the heat transfer from the cooling body 20 to the outside atmosphere They work synergistically, so they provide a cooling sensation to the wearer for a long time.

In addition, by making at least one of the first sheet 26 and the second sheet 28 of the cooling body 20 an air-impermeable or impermeable air-permeable sheet, the direction and amount of moisture evaporation in the water-retaining layer 24 can be controlled. Thereby, the continuity of the steam released from the cooling body 20 can be improved, and the cooling effect of the cooling body 20 can be maintained for a long time.

In particular, the cooling body 20 is arranged on the mask body in such a way that the range of the cooling body 20 in direct or indirect contact with the wearer's face becomes more than 10% of the surface area of the cooling body 20 on the side opposite to the wearer's face. In the case of 2, it can further bring cool feeling to the wearer.

Also, when the ratio of the area occupied by the cooling body 20 is 40% to 80% of the entire surface area of the mask body 2 on the wearer's side, the cool feeling given to the wearer is more remarkable.

Also, when the other of the first sheet 26 and the second sheet 28 includes a breathable sheet, the generation of steam can be promoted, and the cooling effect on the face can be improved by the accompanying heat of vaporization or heat dissipation. . Furthermore, this advantage is particularly remarkable when the air-permeable sheet has an air permeability of 350 seconds/100 mL or less.

Furthermore, when the initial content of water in the water-retaining layer 24 of the cooling body ²⁰ reaches an average of 0.40 ml or less per 1 cm, the cooling effect of the cooling mask 1 at the initial stage of wearing can be improved, and the release from the cooling body 20 can be improved. The continuity of the steam can maintain the cooling effect of the cooling body 20 for a long time. Furthermore, the weight of the cooling body 20 can be suppressed, and the cooling mask 1 can be prevented from slipping off relative to the face. In particular, in the case where the water-retaining layer 24 contains a water-absorbing polymer, the persistence of the steam released from the cooling body 20 is particularly remarkable.

Furthermore, under the measuring environment conditions of 30°C and 40%RH, when the 10-hour average relative humidity of the inner space 4 does not reach 90%, the humidity of the inner space 4 can be suppressed for a long time, and a comfortable environment inside the mask can be maintained . Also, under the measurement environment conditions of 30°C and 40%RH, when the 10-hour average temperature of the cooling body 20 in direct or indirect contact with the wearer's face is below 29.5°C, the wearer can be kept on for a long time. The face cools down.

[the second embodiment] Next, a mask 1' according to a second embodiment of the present invention will be described using Figs. 12 to 17 . [The overall composition of the mask] As shown in Figure 12, the mask 1' of the second embodiment includes: a mask body 2' that can cover at least a part of the wearer (in this embodiment, the mouth and nose), and a cooling device for the mask used with the mask body 2'. The sheet 50 is configured to function as a so-called cooling mask (hereinafter referred to as "cooling mask 1'") by combining the mask main bodies 2' and the mask cooling sheet 50.

[the mask body] As shown in FIG. 12 , the mask body 2' has: a body part 10' having a size that can cover at least a part of the wearer (mouth and nose in this embodiment); and one or more than two hanging ears 30' , which is used to hold the (holding part) body part 10' in front of the wearer's face. The mask main body 2' is configured to accommodate a cooling sheet for the mask in the internal space formed between the main body 10' and the wearer's face while being held in front of the wearer's face by the hanging ears 30' 50. As the mask main body 2', it is not limited to the pleated mask shown in FIG.

[Cooling sheet for mask] The mask cooling sheet 50 includes a water retention layer 24 that retains water, and is configured such that at least a part of the water retention layer 24 is in direct or indirect contact with the wearer's face when placed between the mask body 2' and the wearer. Hereinafter, as the cooling sheet 50 for a mask, a configuration (so-called inner sheet type) in which one or a plurality of cooling bodies 20' are sandwiched between the inner sheet 14' and the outer sheet 16' will be exemplified. to illustrate, but not limited to. For example, one or a plurality of cooling bodies 20' may be directly used as the cooling sheet 50 for a mask. That is, the "cooling sheet for a face mask" in this specification includes not only a combination of one or a plurality of cooling bodies 20', the inner surface sheet 14' and the outer surface sheet 16', but also the cooling body 20. 'Constitution of a single entity. Furthermore, in the case of using a separate cooling body as a cooling sheet for a mask, the size of the cooling body can be changed arbitrarily. For example, the cooling body 20' of the size shown in the figure may be used as it is, or the cooling body 20' may be scaled up to the same extent as the cooling sheet 50 for a mask shown in the figure.

In this embodiment, as shown in FIG. 13 , the cooling sheet 50 for the mask is formed into a sheet shape, has a size and shape to be accommodated in the main body portion 10 ′ of the mask body 2 ′, and is used for being accommodated in the mask body 2 ′. It is constructed in the form of a so-called inner sheet used between the face of the wearer. The cooling sheet 50 for a mask is formed of one sheet. One sheet forming the cooling sheet 50 for a mask may have a single structure (single-layer structure), or a multi-layer structure in which a plurality of sheets are laminated. Since the sheet-shaped member forming the cooling sheet 50 for a mask can provide various functions to the cooling sheet 50 for a mask by imparting different functions to a plurality of sheets, it is preferable to have a multilayer structure. When using a plurality of sheets, each sheet may be in an embossed or laminated state, or may be in a state where the sheets are separated even though the entire surface is bonded. In addition, when the sheets are separated, the sheets are joined to each other along the shape of the mask cooling sheet 50, or only part of the edges may be joined. In addition, as for the bonding method, the following method can be used for bonding.

Hereinafter, in the description of the present embodiment, it will be described that the cooling sheet 50 for a mask is formed of one sheet with a multilayer structure. Specifically, as shown in FIG. 14 , the mask cooling sheets 50 each include: an inner surface sheet 14' that forms a surface facing the wearer's side when disposed between the mask body 2' and the wearer; The surface sheet 16' forms a surface facing the side of the mask body 2' in a state disposed between the mask body 2' and the wearer. The inner sheet 14' and the outer sheet 16' are formed in the same shape and size, and are one sheet of a multilayer structure obtained by laminating the inner sheet 14' and the outer sheet 16'. In addition, in the illustrated example, the cooling sheet 50 for a mask has a substantially rectangular shape including the short-side direction and the long-side direction, but the shape of the cooling sheet 50 for a mask is not limited thereto. Various arbitrary shapes can be adopted as long as at least a part of the cooling body 20 ′ to be described later comes into direct or indirect contact with the face of the wearer when placed between the mask main body 2 ′ and the wearer. Moreover, the cooling sheet 50 for masks is not limited to the planar shape as shown in figure, For example, it may be a three-dimensional shape from a viewpoint of easy breathing. Furthermore, when the cooling sheet 50 for a mask is made into a three-dimensional shape, it may deform|transform from a folded state into a three-dimensional shape, and may retain a shape in advance.

In the cooling sheet 50 for a mask of this embodiment, the cooling body 20' is arranged between the inner sheet 14' and the outer sheet 16'. That is, when both the inner surface sheet 14' and the outer surface sheet 16' contain a single layer or a multilayer nonwoven fabric as described below, the cooling body 20' is sandwiched by two or more nonwoven fabrics. But not limited thereto, a pocket-shaped storage portion may be provided on the inner surface of the cooling sheet 50 for a mask, and the cooling body 20 ′ may be mounted and detached in the storage portion, and adhesives, sewing, thermal fusion, etc. may also be used. Fixing Method The cooling body 20 ′ is fixed to the inner surface of the cooling sheet 50 for a mask. In addition, it is also possible to form a detachable cooling body between the outer surface sheet 16' and the inner surface sheet 14' by making the outer surface sheet 16' and the inner surface sheet 14' partially non-bonded. 20' opening and the composition of the storage space. In addition, the cooling sheet 50 for a mask may be configured so as to be placed between the inside of the mask main body 2' and the wearer's skin in an unfixed manner without a storage part. Furthermore, instead of using the outer surface sheet 16' and the inner surface sheet 14', the cooling body 20' alone may be directly disposed between the mask main body 2' and the wearer as a mask cooling sheet.

In this embodiment, an adhesive (not shown) is applied to the outer surface sheet 16', and the cooling body 20' and the inner surface sheet 14' are adhered via the adhesive. As the adhesive, it is preferable to use a hot-melt adhesive, but not limited thereto, and various known fixing methods can be used. Furthermore, in the case of fixing the cooling body 20', instead of applying the adhesive agent to the outer surface sheet 16', or in addition to this, the adhesive agent may be applied to the inner surface sheet 14'. The composition. Also, as mentioned above, the cooling body 20' can also be directly sandwiched between the mask body 2' and the wearer's skin. In this case, the cooling body 20' may or may not be fixed relative to the mask body 2'.

The material and various physical properties of the inner surface sheet 14' of the mask cooling sheet 50 can be the same as those of the inner surface sheet 14 of the mask main body 2 of the first embodiment, so detailed description thereof will be omitted. Also, the material and various physical properties of the outer surface sheet 16' of the cooling sheet 50 for the mask can also be the same as the material and various physical properties of the outer surface sheet 16 of the mask main body 2 of the first embodiment, so details thereof are omitted. description.

[cooling body] The same cooling body as the cooling body 20 of the first embodiment can be used for the cooling body 20 ′ included in the cooling sheet 50 for a mask. That is, the cooling body 20' is the same as the cooling body 20 of the first embodiment, and includes a water-retaining layer 24 for retaining water, a first sheet 26, and is disposed so as to face the first sheet 26 with the water-retaining layer 24 interposed therebetween. The second sheet 28 .

At least one of the first sheet material 26 and the second sheet material 28 of the cooling body 20' is the same as the first sheet material 26 and the second sheet material 28 of the cooling body 20 of the first embodiment. Air permeability of 80,000 seconds/100 mL or more) or impermeable air permeability (air permeability of 30,000 seconds/100 mL or more). In addition, an air-permeable sheet can be used for the other of the first sheet 26 and the second sheet 28 . Furthermore, other configurations of the first sheet 26 and the second sheet 28 of the cooling body 20' can adopt the same configuration as the first sheet 26 and the second sheet 28 of the cooling body 20 of the first embodiment, so A detailed description thereof may be omitted.

With the cooling body 20' having the above structure, in the state where the mask cooling sheet 50 is disposed between the mask body 2' and the wearer, at least a part of the water-retaining layer 24 of the cooling body 20' is directly or indirectly connected to the face of the wearer. Contact configuration. In this embodiment, the cooling body 20' is disposed between the inner surface sheet 14' and the outer surface sheet 16' of the mask cooling sheet 50, so that the water retention layer 24 of the cooling body 20' is separated from each other when worn. The inner surface sheet 14' is in indirect contact with the wearer's face. But it is not limited to this, it can be set to accommodate the cooling body 20' in the pocket-shaped storage part arranged on the inner surface of the cooling sheet 50 for the mask, and make the water retention layer 24 of the cooling body 20' separate the storage part from the wearer's face. The structure of partial indirect contact can also be set to fix the cooling body 20' on the inner surface of the cooling sheet 50 for the mask by using an adhesive or the like, so that the water-retaining layer 24 of the cooling body 20' is in direct contact with the face of the wearer. . In addition, another member or the like may be interposed between the wearer's face and the cooling body 20' within the range where heat conduction between the wearer's face and the cooling body 20' is impossible.

Like the cooling body 20 of the first embodiment, the range (contact range) where the cooling body 20' is in direct or indirect contact with the face of the wearer (for example, through a sheet) is preferably the range (contact range) between the cooling body 20' and the wearer. The surface area of the facing side of the face is 10% or more, more preferably 20% or more, further preferably 30% or more. Moreover, it is preferably 100% or less, more preferably 80% or less, still more preferably 50% or less. In addition, since the measuring method of the contact area of the cooling body 20 is the same as the measuring method of the contact area of the cooling body 20 of 1st Embodiment, the detailed description is abbreviate|omitted.

As shown in FIG. 13 , the cooling body 20 ′ is arranged symmetrically with respect to the center (longitudinal center line 100 ′) of the cooling sheet 50 for a mask in the longitudinal direction. In the illustrated example, with the longitudinal center line 100' as the boundary, one cooling body 20' is provided on the left and right sides, and there are two cooling bodies 20' in total. Each cooling body 20' is spaced apart from the longitudinal centerline 100' in such a way that it mainly comes into direct or indirect contact with the wearer's cheek in the state where the mask cooling sheet 50 is disposed between the mask body 2' and the wearer. Configured at a specified distance. Furthermore, the distance from the longitudinal centerline 100' to the end of each cooling body 20' can be set to the same distance as the distance D1 described in detail in the _first embodiment, from the end of the cooling sheet 50 for the mask to the The distance between the ends of each cooling body ₂₀ ' can be set to the same distance as the distance D2 described in detail in the first embodiment. Also, the distance (distance D ₂ ) from the end of the cooling sheet 50 for the mask to the end of each cooling body 20' is the same as the distance D ₂ described in detail in the first embodiment, and it is preferably from the cooling sheet 50 for the mask. The distance from the longitudinal centerline 100' of the material 50 to the end (the distance D ₃ in the first embodiment) is 50% or less, more preferably 40% or less, and more preferably 30% or less. Moreover, it is preferably at least 10%, more preferably at least 15%, and still more preferably at least 20%. Furthermore, the ratio of the total area of all the cooling bodies 20' provided on the cooling sheet 50 for the mask can be set to the "area of the entire surface of the wearer's side with respect to the mask main body 2, cooling The ratio of the total area occupied by the body 20" is the same ratio.

The planar shape of the cooling body 20 ′ is the same as that of the cooling body 20 of the first embodiment, and is not particularly limited, and may be circular, polygonal, or the like. From the viewpoint of manufacturing efficiency, ease of use, and cooling effect, it is preferably a quadrangle such as a rectangle or a substantially square, and more preferably a substantially square from the viewpoint of ease of use. Also, for example, one or more cooling bodies 20' are preferably provided in the mask cooling sheet 50, preferably one or more are provided on both sides of the longitudinal centerline 100' as a boundary, but Not limited to this. Furthermore, when a plurality of cooling bodies 20' are provided, the cooling properties of the plurality of cooling bodies 20' may be the same or different, more preferably the same.

(10-hour average relative humidity and 10-hour average temperature) According to the cooling sheet 50 for a mask including the cooling body 20' having the above structure and water vapor generating performance, similar to the cooling mask 1 of the first embodiment, the gap between the mask main body 2' and the wearer's face can be suppressed for a long time. The humidity of the inner space formed can cool the wearer's face for a long time.

Specifically, the mask cooling sheet 50 with the following cooling body 20' can combine the 10-hour average relative humidity of the internal space (that is, the 10-hour average relative humidity of the area where the cooling body 20' is not in direct or indirect contact) with the second 1. The cooling face mask 1 of the embodiment is similarly suppressed to less than 80%. The above-mentioned cooling body 20' uses a breathable sheet for the first sheet 26 and is aligned to the face side, and uses a non-breathable sheet for the second sheet 28. It is obtained from non-permeable or impermeable sheet. In addition, the 10-hour average temperature of the portion of the cooling body 20' that is in direct or indirect contact with the wearer's face can be suppressed to 29° C. or lower. More specifically, the 10-hour average relative humidity of the cooling sheet 50 for masks in this case is more preferably less than 90%, and more preferably less than 80%. Moreover, the 10-hour average temperature of the cooling sheet 50 for masks in this case is more preferably 29.5 degreeC or less, More preferably, it is 29.0 degreeC or less. In addition, the measuring method of temperature and relative humidity is the same as the measuring method of temperature and relative humidity demonstrated in 1st Embodiment, Therefore The detailed description is abbreviate|omitted.

Also, the mask cooling sheet 50 provided with the following cooling body 20' can suppress the 10-hour average relative humidity of the internal space to less than 50% as in the cooling mask 1 of the first embodiment. The first sheet 26 uses a non-breathable or poorly breathable sheet and is oriented toward the face side, and the second sheet 28 uses an air-permeable sheet. In addition, the 10-hour average temperature of the portion of the cooling body 20' that is in direct or indirect contact with the wearer's face can be suppressed to 28.0° C. or lower. More specifically, the 10-hour average relative humidity of the cooling sheet 50 for masks in this case is more preferably less than 60%, and more preferably less than 50%. Also, in this case, the 10-hour average temperature of the cooling sheet 50 for a mask is more preferably 28.5° C. or lower, and more preferably 27.5° C. or lower.

[How to use the cooling mask (cooling sheet for mask)] Next, the usage methods of the cooling mask 1 of the first embodiment and the cooling mask 1' of the second embodiment will be described. The cooling mask 1 of the first embodiment and the cooling mask 1' of the second embodiment are coolers with packaging bags in which at least cooling bodies 20, 20' are sealed in waterproof packaging bags 200, 200'. . In the first embodiment, the cooling body 20 is integrated with the mask body 2 , and therefore, the cooling mask 1 is stored in a state of being sealed in a packaging bag 200 as shown in FIG. 8 . In this storage state, the mask body 2 can be folded around the longitudinal centerline in the state where the holding portion 30 is folded inward, or it can not be folded. On the other hand, in 2nd Embodiment, as shown in FIG. 15, only the cooling sheet 50 for masks can be stored in the state enclosed in the packaging bag 200'. In this stored state, the cooling sheet 50 for a mask may be folded around the longitudinal center line or may not be folded. In the second embodiment, the mask main body 2' does not need to be enclosed in the waterproof packaging bag 200', but it can also be enclosed with the cooling sheet 50 for the mask. Moreover, the structure which encloses only the cooling body 20, 20' in the packaging bag 200, 200' may be sufficient.

When using the cooling mask 1 of the first embodiment, at first, the wearer unseals the packaging bag 200, takes out the cooling mask 1, opens the mask body 2 folded in half from the side end 5 of the veneer, and takes out a mask body 2 from the inside of the mask body 2. For the holding part 30. Then, as shown in FIG. 9( a ), in the state where the mask body 2 is in contact with the mouth and nose, stretch the holding part 30 with fingers, and insert the ear into the ear-hanging hole 32 . By hanging a pair of holding parts 30 on the left and right ears of the wearer in this way, as shown in FIG. The main body 2 is held on the wearer's face. On the other hand, when using the cooling mask 1' of the second embodiment, the wearer unseals the packaging bag 200' and takes out the cooling sheet 50 (or cooling body 20') for the mask, as shown in Figure 16, in the new In the state where the mask body 2' or the inner surface of the worn mask body 2' is provided with a mask cooling sheet 50 (or cooling body 20'), as shown in Figure 17, the mask body 2' is worn on wearer's face. At this time, from the viewpoint of conformability, it is preferable to overlap the mask with the outer surface sheet 16' (or the first sheet 26 or the second sheet 28 of the cooling body 20') of the cooling sheet 50 for the mask. On the inner surface of the main body 2', the longitudinal centerline 100' of the cooling sheet 50 for the mask is arranged in the same manner as the center of the width direction of the mask main body 2', but it is not limited thereto.

Moreover, in the state where the mouth and nose are covered by the mask body 2, 2' in this way, at least a part of the water-retaining layer 24 of the cooling body 20, 20' is in contact with the wearer's face, so that the heat from the wearer's face is conducted to the cooling body 20. , 20', cooling the wearer's face. In addition, the heat of the wearer's face heats the cooling bodies 20, 20', and the water held in the cooling bodies 20, 20' evaporates, thereby generating heat of vaporization. Thereby, the heat possessed by the cooling body 20, 20' is continuously dissipated to the outside of the cooling body 20, 20', and the wearer's face is further cooled. Furthermore, through heat conduction from the cooling body 20, 20' to the outside atmosphere, the heat possessed by the cooling body 20, 20' is dissipated to the outside of the cooling body 20, 20'. Utilizing such a cooling mechanism, according to the cooling masks 1 and 1' of the first and second embodiments, the wearer can be provided with a cool feeling for a long time.

Furthermore, the packaging bags 200, 200' enclosing the cooling face mask 1 or the cooling sheet 50 (or cooling body 20') for the mask are preferably bags with water vapor barrier properties (non-water-permeable packaging materials, etc.), but not limited to this. Also, in the first and second embodiments, the cooling mask 1 as a whole or the cooling sheet 50 for the mask as a whole is enclosed in the packaging bag 200', but it is not limited thereto. When the cooling sheet 50 for the mask is integrated (it can be added later), the mask body 2 or the cooling sheet 50 for the mask and the cooling body 20, 20' can be individually packaged, or only the cooling body 20, 20 can be packaged. '.

[Advantages of the cooling sheet for face mask of the second embodiment] As described above, the mask cooling sheet 50 of the second embodiment is a mask cooling sheet 50 used together with the mask main body 2' covering at least a part of the wearer's face, and has a water retention layer 24 for retaining water. In the state of being arranged between the mask body 2' and the wearer, at least a part of the water retention layer 24 is in direct or indirect contact with the face of the wearer.

And, according to the mask cooling sheet 50 having such a structure, like the cooling mask 1 of the first embodiment, the heat conduction from the wearer's face to the cooling body 20' and the vaporization caused by the water evaporation of the cooling body 20' The heat cooperates with the heat conduction from the cooling body 20' to the outside atmosphere, so that the wearer can have a cool feeling for a long time.

Also, by making at least one of the first sheet material 26 and the second sheet material 28 of the cooling body 20' be an air-impermeable or impermeable sheet material, water retention can be controlled in the same way as the cooling face mask 1 of the first embodiment. The direction and amount of water evaporation in the layer 24 can improve the continuity of the steam released from the cooling body 20' and maintain the cooling effect of the cooling body 20' for a long time.

[variation example] As mentioned above, although the preferable embodiment of this invention was illustrated and described, the technical scope of this invention is not limited to the range described in the said embodiment. Various modifications and improvements can be made to the above-described embodiments.

For example, in the above-mentioned first and second embodiments, the cooling mask that can cover the mouth and nose is described, but it is not limited thereto, as long as it can cover at least a part of the wearer's face.

In the above-mentioned first embodiment, the mask main body 2 has been described as being provided with the first flap portion 10A and the second flap portion 10B, and is configured to be deformable from a folded state to a three-dimensional shape, but it is not limited thereto, and the shape may be retained in advance. . Also, it is not limited to the three-dimensional mask body 2, but may be a flat mask body such as a pleated mask.

It can be seen from the description of the claims that the above-mentioned modification examples are included in the scope of the present invention.

Regarding the above-mentioned embodiment, the present invention further discloses the following masks and cooling sheets for masks.

<1> A mask comprising: a mask body covering at least a part of a wearer's face; and a cooling body disposed on the mask body; and The mask body is configured to form an internal space with the wearer's face when worn; The cooling body includes a water-retaining layer for retaining water, a first sheet, and a second sheet disposed opposite to the first sheet with the water-retaining layer interposed therebetween, and at least a part thereof is in contact with the wearer's face when worn. The method of direct or indirect contact is configured on the above-mentioned mask body; At least one of the first sheet and the second sheet includes an air-impermeable sheet or an air-impermeable sheet.

<2> The mask of <1> above, wherein The air permeability of the above-mentioned non-breathable or poorly breathable sheet is preferably at least 50,000 seconds/100 mL, more preferably at least 80,000 seconds/100 mL.

<3> The mask of <1> or <2> above, wherein When the above-mentioned cooling body is worn, the range of direct or indirect contact with the wearer's face is more than 10% of the surface area of the side of the cooling body that is opposite to the wearer's face. <4> The mask of <3> above, wherein Among the surface areas of the cooling body on the side opposite to the wearer's face, the ratio of the range (contact range) that is in direct or indirect contact with the wearer's face is preferably at least 10%, more preferably at least 20%. , and more preferably 30% or more, and, preferably 100% or less, more preferably 80% or less, still more preferably 50% or less.

<5> The mask according to any one of the above <1> to <4>, wherein the cooling body is arranged on the first wing portion of the mask body in a bilaterally symmetrical manner with the longitudinal centerline of the mask body as a boundary and both of the second fin portion. <6> The mask according to any one of the above <1> to <5>, wherein the cooling body is preferably the distance between the longitudinal centerline of the mask body and the end of the cooling body on the longitudinal centerline side D ₁ is arranged to be 5 mm or more, more preferably 10 mm or more. <7> The mask according to any one of the above-mentioned <1> to <6>, wherein the cooling body is preferably formed so that the end of the cooling body on the facing side end is connected to the facing-side end of the mask body The distance D ₂ between them is arranged so as to be 28 mm or less, more preferably 23 mm or less. <8> The mask as in <7> above, wherein the distance D ₂ is preferably less than 50%, more preferably less than 40%, and more preferably 30% of the width D ₃ of each wing portion of the mask body Below, also, Preferably it is 10% or more, More preferably, it is 15% or more, More preferably, it is 20% or more.

<9> The mask according to any one of <1> to <8> above, wherein The ratio of the area occupied by the cooling body to the entire surface area of the mask body on the wearer's side is not less than 40% and not more than 80%. <10> The mask of <9> above, wherein With respect to the area of the entire surface of the wearer's side of the above-mentioned mask body, the ratio of the total area occupied by the above-mentioned cooling body is preferably 40% or more, more preferably 42% or more, and is preferably 80% or less, more preferably below 65%.

<11> The mask according to any one of <1> to <10> above, wherein The other of the first sheet and the second sheet includes an air-permeable sheet having an air permeability of 350 seconds/100 mL or less. <12> The mask of <11> above, wherein The air permeability of the air-permeable sheet is preferably at most 350 seconds/100 mL, more preferably at most 100 seconds/100 mL.

<13> The mask according to any one of <1> to <12> above, wherein Under the measured environmental conditions of 30°C and 40%RH, the 10-hour average relative humidity of the above-mentioned internal space did not reach 90%. <14> The mask according to any one of <1> to <13> above, wherein Under the measured environmental conditions of 30°C and 40%RH, the 10-hour average temperature of the part of the cooling body that is in direct or indirect contact with the wearer's face is below 29.5°C.

<15> The mask of <11> or <12> above, wherein The above-mentioned cooling system uses a breathable sheet on the face side and a non-breathable or poorly breathable sheet on the non-face side. <16> The mask of <15> above, which Equipped with the above-mentioned cooling body in which an air-permeable sheet is used as the first sheet and oriented to the face side, and an air-impermeable or impermeable-air-permeable sheet is used for the second sheet, and the 10-hour average of the inner space is The relative humidity (that is, the 10-hour average relative humidity of the area where the cooling body is not in direct or indirect contact) is more preferably less than 90%, and more preferably less than 80%. <17> The mask of <15> or <16> above, which The above-mentioned cooling body is provided with the above-mentioned cooling body obtained by using an air-permeable sheet for the above-mentioned first sheet and aligning it on the face side, and using an air-impermeable or poorly-breathable sheet for the above-mentioned second sheet, and the above-mentioned cooling body is worn The 10-hour average temperature of the parts directly or indirectly in contact with the face is more preferably below 29.5°C, further preferably below 29.0°C.

<18> The mask of <11> or <12> above, wherein The above-mentioned cooling system uses a non-breathable or poorly breathable sheet on the face side and an air-permeable sheet on the non-face side. <19> The mask of <18> above, which Equipped with the above-mentioned cooling body using a non-breathable or impermeable air-permeable sheet for the above-mentioned first sheet and oriented to the face side, and using an air-permeable sheet for the above-mentioned second sheet, and the 10-hour average relative humidity of the internal space More preferably, it is less than 60%, and still more preferably, it is less than 50%. <20> The mask of <18> or <19> above, which Equipped with the above-mentioned cooling body using a non-breathable or impermeable air-permeable sheet for the above-mentioned first sheet and oriented to the face side, and using a breathable sheet for the above-mentioned second sheet, and the above-mentioned cooling body is connected to the face of the wearer. The 10-hour average temperature of all parts in direct or indirect contact is more preferably 28.5°C or lower, further preferably 27.5°C or lower.

<21> The mask according to any one of <1> to <20> above, wherein the initial water content of the water-retaining layer is 0.40 ml or less on average per 1 cm ² . <22> The face mask as described in <21> above, wherein the initial content of the water retained in the above-mentioned water-retaining layer (that is, the water content immediately after opening the packaging bag such as an oxygen barrier bag) is preferably at least 0.04 ml per 1 cm ² on average , more preferably at least 0.08 ml per 1 cm ² , more preferably at least 0.10 ml per 1 cm ² on average, and preferably less than 0.40 ml per 1 cm ² on average, more preferably at least 0.40 ml per 1 cm 2 on average ² less than 0.30 ml, and more preferably less than 0.25 ml per 1 cm ² . <23> The mask according to any one of <1> to <22> above, wherein the initial content of the water retained in the water-retaining layer is preferably at least 1% by mass of the maximum water absorption of the water-retaining layer, more preferably 2 Mass % or more, more preferably 3 mass % or more, further preferably 4 mass % or more, and, preferably 20 mass % or less, more preferably 15 mass % or less, further preferably 10 mass % or less, Still more preferably, it is 7 mass % or less.

<24> A cooling sheet for a mask used with a mask body covering at least a portion of a wearer's face, and Has a water-retaining layer that retains water, The configuration is such that at least a part of the water retention layer is in direct or indirect contact with the face of the wearer in a state disposed between the mask main body and the wearer.

<25> The cooling sheet for a mask as described in <24> above, which Furthermore, it includes a first sheet, and a second sheet disposed opposite to the first sheet with the water-retaining layer interposed therebetween, At least one of the first sheet and the second sheet includes an air-impermeable sheet or an air-impermeable sheet. <26> The cooling sheet for masks as described in <25> above, wherein The air permeability of the above-mentioned non-breathable or poorly breathable sheet is preferably at least 50,000 seconds/100 mL, more preferably at least 80,000 seconds/100 mL.

<27> The cooling sheet for a face mask according to any one of the above <24> to <26>, wherein Equipped with a cooling body having the above-mentioned water-retaining layer, The above-mentioned cooling body is preferably more than 10% of the surface area of the side of the cooling body that is in direct or indirect contact with the wearer's face when worn, more preferably more than 20%. , and more preferably 30% or more, and, preferably 100% or less, more preferably 80% or less, still more preferably 50% or less.

<28> The cooling sheet for a mask according to any one of the above <24> to <27>, wherein the cooling body uses the center (longitudinal centerline) of the cooling sheet for a mask as a boundary, and the left and right Symmetrically configured. <29> The cooling sheet for a mask according to any one of the above <24> to <28>, wherein the cooling body is preferably from the longitudinal centerline of the cooling sheet for a mask to the end of the cooling body. The distance is arranged to be 5 mm or more, more preferably 10 mm or more. <30> The cooling sheet for a mask according to any one of the above <24> to <29>, wherein the cooling body is preferably the distance from the end of the cooling sheet for a mask to the end of the cooling body It is arranged to be 28 mm or less, more preferably 23 mm or less. <31> The cooling sheet for a mask according to the above <30>, wherein the distance (distance D 2 ) from the end of the cooling sheet for a mask to the end of the cooling body (distance D ₂ ) is preferably from the cooling sheet for a mask 50% or less of the distance from the longitudinal centerline to the end (distance D ₃ ), more preferably less than 40%, more preferably less than 30%, and preferably more than 10%, more preferably more than 15%, Furthermore, it is more preferably 20% or more.

<32> The cooling sheet for a mask according to any one of <24> to <31> above, wherein The ratio of the total area occupied by the cooling body to the entire surface area of the cooling sheet for a mask on the wearer's side is preferably at least 40%, more preferably at least 42%, and preferably at most 80%. , more preferably below 65%.

<33> The cooling sheet for masks according to any one of <24> to <32> above, wherein The other of the first sheet and the second sheet includes an air-permeable sheet having an air permeability of 350 seconds/100 mL or less. <34> The cooling sheet for a mask according to <33> above, wherein The air permeability of the air-permeable sheet is preferably at most 350 seconds/100 mL, more preferably at most 100 seconds/100 mL.

<35> The cooling sheet for face masks according to any one of <24> to <34> above, wherein Under the measured environmental conditions of 30°C and 40%RH, the 10-hour average relative humidity of the internal space formed between the mask body and the wearer's face does not reach 90%. <36> The cooling sheet for face masks according to any one of <24> to <35> above, wherein Under the measured environmental conditions of 30°C and 40%RH, the 10-hour average temperature of the part of the cooling body that is in direct or indirect contact with the wearer's face is below 29.5°C.

<37> The cooling sheet for face masks according to the above <33> or <34>, wherein The above-mentioned cooling system uses a breathable sheet on the face side and a non-breathable or poorly breathable sheet on the non-face side. <38> The cooling sheet for a mask as described in <37> above, which Equipped with the above-mentioned cooling body in which an air-permeable sheet is used as the first sheet and oriented to the face side, and an air-impermeable or impermeable-air-permeable sheet is used for the second sheet, and the 10-hour average of the inner space is The relative humidity (that is, the 10-hour average relative humidity of the area where the cooling body is not in direct or indirect contact) is more preferably less than 90%, and more preferably less than 80%. <39> The cooling sheet for a mask according to the above <37> or <38>, wherein The above-mentioned cooling body is provided with the above-mentioned cooling body obtained by using an air-permeable sheet for the above-mentioned first sheet and aligning it on the face side, and using an air-impermeable or poorly-breathable sheet for the above-mentioned second sheet, and the above-mentioned cooling body is worn The 10-hour average temperature of the parts directly or indirectly in contact with the face is more preferably below 29.5°C, further preferably below 29.0°C.

<40> The cooling sheet for face masks according to the above <33> or <34>, wherein The above-mentioned cooling system uses a non-breathable or poorly breathable sheet on the face side and an air-permeable sheet on the non-face side. <41> The cooling sheet for a mask as described in <40> above, which Equipped with the above-mentioned cooling body using a non-breathable or impermeable air-permeable sheet for the above-mentioned first sheet and oriented to the face side, and using an air-permeable sheet for the above-mentioned second sheet, and the 10-hour average relative humidity of the internal space More preferably, it is less than 60%, and still more preferably, it is less than 50%. <42> The cooling sheet for face masks according to the above <40> or <41>, wherein Equipped with the above-mentioned cooling body using a non-breathable or impermeable air-permeable sheet for the above-mentioned first sheet and oriented to the face side, and using a breathable sheet for the above-mentioned second sheet, and the above-mentioned cooling body is connected to the face of the wearer. The 10-hour average temperature of all parts in direct or indirect contact is more preferably 28.5°C or lower, further preferably 27.5°C or lower.

<43> The cooling sheet for a face mask according to any one of the above <24> to <42>, wherein the initial water content of the water-retaining layer is 0.40 ml or less per 1 cm ² on average. <44> The cooling sheet for masks as described in <43> above, wherein the initial content of the water held in the water-retaining layer (that is, the water content immediately after opening the packaging bag such as an oxygen barrier bag) is preferably averaged per 1 cm ² More than 0.04 ml, more preferably more than 0.08 ml per 1 cm ² on average, more preferably more than 0.10 ml per 1 cm ² on average, and preferably less than 0.40 ml per 1 cm ² on average, more preferably An average of 0.30 ml or less per 1 cm ² , and more preferably an average of 0.25 ml or less per 1 cm ² . <45> The cooling sheet for masks according to any one of the above <24> to <44>, wherein the initial content of the water retained in the water-retaining layer is preferably at least 1% by mass of the maximum water absorption of the water-retaining layer, More preferably at least 2% by mass, further preferably at least 3% by mass, still more preferably at least 4% by mass, further preferably at most 20% by mass, more preferably at most 15% by mass, further preferably at most 10% by mass % by mass or less, more preferably no more than 7 mass %.

1: cooling mask 1': cooling mask 2: Mask body 2': mask body 4: Internal space 4a: upper joint 4b: lower joint 5: Veneer side end 6: Closed side end 7: upper edge 8: lower edge 10A: 1st wing part 10B: The second wing part 10': body part 14: Inner surface sheet 14': inner surface sheet 16: Outer surface sheet 16': Outer surface sheet 20: cooling body 20': cooling body 22: Substrate layer 24: water retention layer 26: first sheet 28: Second sheet 30: Holding part (hanging ear) 30': holding part (hanging ear) 31: Ear-mounting body 32: Hanging ear hole 39: sealing part 40: Measuring device 41: Aluminum measuring chamber 42: Inflow path 43: Outflow path 44: Inlet temperature and humidity meter 45: Inlet flow meter 46:Export temperature and humidity meter 47: Outlet flow meter 48: Thermometer (Thermistor) 50: cooling sheet for mask 100: longitudinal centerline 100': longitudinal centerline 200: Packaging bag 200': Packaging bag HM: Human head model for volumetric determination

Fig. 1 is a diagram showing a mask according to one embodiment of the present invention. Fig. 2 is a developed view showing the unfolded state of the mask body in the mask of the first embodiment. Fig. 3 is a sectional view along line II' of Fig. 2 . Fig. 4 is a diagram showing a folded state of the mask of the first embodiment. Fig. 5(a) is a side view showing the state of wearing the mask of the first embodiment on the human head model for volume measurement, and Fig. 5(b) is a side view showing the state of wearing the mask of the first embodiment on the human head model for volume measurement The previous view of the state. Fig. 6 (a) is a view showing the state after opening the facing side end of the mask, and Fig. 6 (b) is a view showing the state after the holding part is folded in. Fig. 7 is a diagram schematically showing a cross section of a cooling body. Fig. 8 is a diagram showing the state after the mask is sealed in the packaging bag. Fig. 9(a) is a diagram showing a state when the holding part is stretched, and Fig. 9(b) is a diagram showing a state when the holding part is worn. Fig. 10 is a diagram showing a mask of a modified example of the first embodiment. Fig. 11 is a schematic diagram showing an apparatus for measuring the amount of water vapor generated. Fig. 12 is a diagram showing a mask of the second embodiment. Fig. 13 is a diagram showing a cooling sheet for a mask. Fig. 14 is a cross-sectional view along line II-II' of Fig. 13 . Fig. 15 is a diagram showing a state in which the mask cooling sheet is sealed in a packaging bag. Fig. 16 is a diagram showing a state in which a mask cooling sheet is disposed on the mask body. Fig. 17 is a diagram showing a state where a wearer is wearing the mask of the second embodiment.

Claims (9)

A mask comprising: a mask body covering at least a part of a wearer's face; and a cooling body disposed on the mask body; and The mask body is configured to form an internal space with the wearer's face when worn; The cooling body includes a water-retaining layer for retaining water, a first sheet, and a second sheet disposed opposite to the first sheet with the water-retaining layer interposed therebetween, and at least a part thereof is in contact with the wearer's face when worn. The method of direct or indirect contact is configured on the above-mentioned mask body; At least one of the first sheet and the second sheet includes an air-impermeable sheet or an air-impermeable sheet. Such as the mask of claim 1, wherein When the above-mentioned cooling body is worn, the range of direct or indirect contact with the wearer's face is more than 10% of the surface area of the side of the cooling body that is opposite to the wearer's face. Such as the mask of claim 1 or 2, wherein The ratio of the area occupied by the cooling body to the entire surface area of the mask body on the wearer's side is not less than 40% and not more than 80%. Such as the mask of claim 1 or 2, wherein The other of the first sheet and the second sheet includes an air-permeable sheet having an air permeability of 350 seconds/100 mL or less. The face mask according to claim 1 or 2, wherein the initial water content of the above-mentioned water-retaining layer is less than 0.40 ml per 1 cm ² on average. Such as the mask of claim 1 or 2, wherein Under the measured environmental conditions of 30°C and 40%RH, the 10-hour average relative humidity of the above-mentioned internal space did not reach 90%. Such as the mask of claim 1 or 2, wherein Under the measured environmental conditions of 30°C and 40%RH, the 10-hour average temperature of the part of the cooling body that is in direct or indirect contact with the wearer's face is below 29.5°C. A cooling sheet for a mask used with a mask body covering at least a portion of a wearer's face, and Has a water-retaining layer that retains water, The configuration is such that at least a part of the water retention layer is in direct or indirect contact with the face of the wearer in a state disposed between the mask main body and the wearer. The cooling sheet for a face mask according to claim 8, further comprising a first sheet, and a second sheet disposed opposite to the first sheet with the water-retaining layer interposed therebetween, At least one of the first sheet and the second sheet includes an air-impermeable sheet or an air-impermeable sheet.

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