CN115697117A - disposable mask - Google Patents

Abstract

A disposable mask (1, 2) is characterized in that: it has a mask main body (10, 40) and an ear hook (20, 50) for hanging around the ears of a wearer, wherein the mask main body (10 , 40) have a filter member (11, 41) that collects at least one of virus droplets and bacterial droplets, and be arranged on the skin side of the filter member (11, 41) and have a heat-absorbing agent placed therein ( 30) A nonwoven sheet (12, 42).

Description

disposable mask

technical field

The invention relates to a disposable mask.

Background technique

Masks are used to make contact with the wearer's face. Therefore, Patent Document 1 discloses applying a moisturizing agent or humectant to the innermost layer material of the mask. In this mask, the wearer can feel a good touch and moisturization.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2019-52400

Contents of the invention

The problem to be solved by the invention

The problem with masks is that the interior of the mask tends to get stuffy due to the wearer's moist breath. Especially, in hot summer, there is a risk of heat stroke caused by wearing a mask for a long time. Since the mask of Patent Document 1 is coated with a moisturizing agent, the wearer can feel a cool feeling (cold feeling on contact) on the skin portion in contact with the mask.

However, the cooling sensation generated by the moisturizer is a cooling sensation caused by a temperature difference between the temperature of the moisturizer and the wearer's body temperature. Therefore, the cooling effect of the contact cold feeling caused by the humectant whose temperature becomes approximately equal to the outside air temperature is low, and it is not enough to improve the stuffiness in the mask. Generally, the outer peripheral end of the mask tends to be in close contact with the wearer's skin, but on the other hand, there tends to be a space between the central part of the mask and the wearer. Thus, the wearer's skin is less likely to be in contact with the moisturizer at the central portion of the mask, which is likely to be stuffy due to the wearer's breath, so that the wearer is less likely to feel a cold sensation.

The present invention has been achieved in view of the above-mentioned problems, and an aspect of the present invention is to provide a disposable mask that improves stuffiness in the mask and makes the wearer feel cold more easily.

solutions to problems

The main aspect of the present invention for realizing the above-mentioned aspects is a disposable mask, comprising: a mask main body; A filter member of at least one type of foam, and a nonwoven fabric sheet provided on the skin side of the filter member and including a heat absorbing agent.

Other features of the present invention will become apparent by reading the description of this specification with reference to the accompanying drawings.

The effect of the invention

According to the present invention, it is possible to provide a disposable mask that improves stuffiness inside the mask and makes the wearer feel cold more easily.

Description of drawings

[Fig. 1] Fig. 1 is a plan view of a disposable mask 1 of a first embodiment.

[ Fig. 2] Fig. 2 is a sectional view of the mask 1 taken along line I-I in Fig. 1 .

[ Fig. 3] Fig. 3 is a diagram showing the mask 1 in the worn state.

[Fig. 4] Fig. 4A is a plan view of the disposable mouth mask 2 of the second embodiment in a folded state, and Fig. 4B is a front view of the mouth mask 2 in an unfolded state.

[FIG. 5] FIG. 5 is a front view of the mask 2 in the worn state.

[FIG. 6] FIG. 6 is a schematic view of the mask 2 in the worn state viewed from above.

[ Fig. 7] Fig. 7 is a plan view of the disposable mask 3 of the third embodiment viewed from the non-skin side.

[FIG. 8] FIG. 8 is a plan view of the mask 3 viewed from the skin side.

[ Fig. 9] Fig. 9 is a cross-sectional view of the mask main body portion 10 taken along line I-I in Fig. 7 .

Detailed ways

At least the following will become clear from the description of this specification and the accompanying drawings.

Disposable mouth mask comprises: mouth mask main body and the ear hook part that is used to hang around the wearer's ear, and mouth mask main body has the filter member that collects at least one in virus droplet and bacterial droplet and the skin that is arranged on filter member A sheet of nonwoven fabric facing side and including a heat absorber.

In this disposable mask, the heat absorbing agent comes into contact with the wearer's moist breath and causes an endothermic reaction. This lowers the temperature of the inner space of the mask, making it possible to improve stuffiness inside the mask. In addition, the filter member makes it easier for the wearer's breath and heat-absorbing agent to stay in the inner space of the mask. Thus, the contact time between the breath of the wearer and the heat-absorbing agent is increased, and the cooling effect and its persistence are improved. As a result, the wearer easily feels the coldness of the mask.

In this disposable mask, the heat absorbing agent contains any one of sugar alcohol and sugar.

This disposable mask is safe even when the heat absorbing agent comes into contact with the wearer's mouth.

In this disposable mask, the non-skin side surface of the filter member forms at least a part of the non-skin side surface of the mask main body, and the skin side surface of the nonwoven sheet forms at least a part of the skin side surface of the mask main body.

In such a disposable mask, the number of materials laminated in the thickness direction of the mask main body is reduced. Thereby, stuffiness in a mask can be improved.

In such a disposable mask, the heat absorbing agent is provided on a portion forming at least a part of the skin-side surface of the mask main body.

In such a disposable mask, an endothermic reaction easily occurs at a position close to the wearer's skin, making the wearer more likely to feel a cold sensation.

In this disposable mask, the filter member is a nonwoven fabric sheet made of polyolefin-based fibers and subjected to dielectric polarization, and the heat absorbing agent does not contain alcohol.

Such a disposable mask can suppress the deterioration of the collection effect of the filter member due to the alcohol component of the heat absorbing agent.

In this disposable mask, the heat absorbing agent is non-volatile.

This disposable mask can prevent the endothermic agent from volatilizing and adhering to the filter member before the mask is used, thereby reducing the collection effect of the filter member.

In this disposable mask, the outer peripheral end of the filter member and the outer peripheral end of the nonwoven fabric sheet coincide with each other.

In such a disposable mask, the non-woven fabric sheet (heat absorber) can be provided over a wide range of the plane of the mask main body portion, which makes it possible to reduce the temperature of the internal space of the mask in a wide range. The filter member can be provided over a wide range of the plane of the mask main body, thereby improving the collection effect of the filter member.

In such a disposable mask, the filter member has a lower basis weight of the heat absorbing agent than the nonwoven fabric sheet.

In such disposable masks, a large amount of heat absorbing agent is placed in a non-woven sheet close to the wearer. Thereby, an endothermic reaction is likely to occur at a position close to the wearer, so that the wearer can feel a cold feeling more easily. In addition, it is possible to suppress a decrease in the collection effect of the filter member due to the heat absorbing agent adhering to the filter member.

In such a disposable mask, no heat absorbing agent is provided in the filter member.

In such a disposable mask, it is possible to suppress a decrease in the collection effect of the filter member due to the heat absorbing agent adhering to the filter member.

In this disposable mask, the main body of the mask has the up-down direction and the left-right direction, and at the central part in the up-down direction, the filter member and the non-woven fabric sheet are folded into a pleat-like shape at creases extending in the left-right direction. The two side parts of the left and right directions of the main body, the filter member and the non-woven fabric sheet are joined in a state folded into a pleated shape, and the central part in the up and down direction has a basis weight of the heat absorbing agent in the main part of the mask higher than that of the up and down The portion of the basis weight of the heat absorber in the direction on the end.

In such a disposable mask, more heat-absorbing agent can come into contact with the wearer's breath in the vertically central portion close to the wearer's nostrils or mouth, thereby enhancing the cooling effect. In addition, the two sides in the left and right direction of the mask main body are parts that are in contact with the wearer's cheeks, so by providing the parts with a higher basis weight of the heat absorbing agent on the two sides in the left and right direction, the wearer is more comfortable. It is easy to feel cold.

In this disposable mask, the main body of the mask has the up-down direction and the left-right direction, and at the central part in the up-down direction, the filter member and the non-woven fabric sheet are folded into a pleat-like shape at creases extending in the left-right direction. The two sides of the left and right direction of the main body part, the filter member and the non-woven fabric sheet are joined in the state of being folded into a pleated shape, and in the two side parts of the left and right direction of the mask main body part, in the central part of the up and down direction The basis weight of the endothermic agent is higher than that of the endothermic agent in the up-down direction.

In such a disposable mask, more heat-absorbing agent can come into contact with the breath of the wearer in the vertical center near the nostrils or mouth of the wearer, thereby improving the cooling effect.

In this disposable mask, the main body of the mask has the up-down direction and the left-right direction, and at the central part in the up-down direction, the filter member and the non-woven fabric sheet are folded into a pleat-like shape at creases extending in the left-right direction. The two side parts of the left and right direction of the main body part, the filter member and the non-woven fabric sheet are joined in a state folded into a pleated shape, and the heat-absorbing agent is arranged on the whole of the non-woven fabric sheet in the main body part of the mask, and the upper and lower sides The central portion has a portion in which the basis weight of the endothermic agent in the mask main body is higher than the basis weight of the endothermic agent in the up-down direction.

In such a disposable mask, more heat-absorbing agent can come into contact with the breath of the wearer in the vertical center near the nostrils or mouth of the wearer, thereby enhancing the cooling effect.

In this disposable mask, the main body of the mask has an up-down direction, a left-right direction, and a thickness direction, and at least one of the upper end and the lower end of the main body of the mask has a non-woven fabric sheet folded back toward the non-skin surface. , and in the non-folded portion overlapping with the folded portion in the thickness direction of the mask main body, the heat absorbing agent is provided on the skin-side surface of the nonwoven fabric sheet.

This disposable mask can prevent the filter member from covering the nonwoven fabric sheet with heat absorbing agent from the skin side in the upper end and lower end of the mask main body. Therefore, an endothermic reaction is likely to occur at a position close to the wearer, and the wearer is more likely to feel a cold sensation.

In such a disposable mask, the upper end of the mask main body has a folded portion, and the heat absorbing agent is provided on the non-skin side surface of the nonwoven fabric sheet in the folded portion.

When the breath released from the mask rises, this disposable mask makes it easy for the breath to come into contact with the heat absorbing agent on the non-skin side surface (outer surface) of the turn-back portion. This makes it possible to lower the temperature near the upper end of the mask main body. In addition, the temperature of the breath is also reduced, making the wearer's glasses less likely to fog up.

In such a disposable mask, the mask main body includes a pair of sheet parts respectively covering the right side and the left side of the wearer's face, and a joining part joining the pair of sheet parts. In the disposable mask in the unfolded state, the mask main body has up-down and left-right directions, and the central part of the left-right direction of the mask main body has a high basis weight part, and in the high basis weight part, the basis weight of the heat-absorbing agent Higher than the basis weight of the endothermic agent in both ends in the left-right direction.

In such a disposable mask, more heat-absorbing agent can come into contact with the breath of the wearer in the left-right central portion of the mask main body close to the wearer's nostrils or mouth, thereby improving the cooling effect.

In such a disposable mask, a high basis weight portion is provided continuously in the vertical direction from the upper end to the lower end of the mask main body.

In such a disposable mask, more heat-absorbing agent can come into contact with the breath of the wearer in the left-right central portion of the mask main body close to the wearer's nostrils or mouth, thereby improving the cooling effect.

In such a disposable mask, the ear loop portion is joined to the skin-side surface of the mask main body portion.

In such a disposable mask, the earloop is closer to the skin side than the nonwoven fabric sheet in the part of the mask main body where the earloop is attached (the portion that is likely to be in close contact with the wearer's skin). Therefore, this can prevent the heat absorbing agent from directly adhering to the wearer's skin.

In such a disposable mask, a heat absorbing agent is mixed into at least a part of fibers constituting the nonwoven fabric sheet.

In such a disposable mask, the heat absorbing agent is not easily detached from the nonwoven fabric sheet, which improves the durability of the cooling effect due to the heat absorbing agent.

In such a disposable mask, a heat absorbing agent is applied to the skin-side surface of the nonwoven fabric sheet.

In this disposable mask, the heat-absorbing agent is arranged at a position close to the wearer, so that the heat-absorbing agent is easily in contact with the breath of the wearer, thereby improving the cooling effect.

In this disposable mask, the nonwoven sheet includes hydrophilic fibers.

In this disposable mask, the hydrophilic fibers of the non-woven fabric sheet make it easier for moisture to remain in the non-woven fabric sheet, making it easier for the endothermic reaction of the heat-absorbing agent to occur. Therefore, the cooling effect is enhanced.

In such a disposable mask, the air permeability resistance value of the filter member is 0.45 kPa·s/m or less.

In this disposable mask, the filter member has good air permeability, so that the inside of the mask is not easy to be stuffy.

In this disposable mask, the mask main body has up-down direction and left-right direction, and the two side parts in the left-right direction respectively have the basis weight of the heat-absorbing agent in the mask main body part higher than that in the central part in the left-right direction. The fraction of the basis weight of the thermal agent.

In this disposable mask, the two side portions of the left-right direction of the mask main body are in contact with the wearer's cheeks, therefore, the base weight of the heat-absorbing agent is higher than that of the left-right direction central portion by arranging the heat-absorbing agent at the left-right direction side portions. The part of the basis weight of the heat absorber makes it easier for the wearer to feel the coldness.

In this disposable mask, the mask main body has a second nonwoven fabric sheet, the second nonwoven fabric sheet is arranged to face one side surface or the other side surface of the nonwoven fabric sheet in the thickness direction, and the second nonwoven fabric sheet The cooling agent is set in the second non-woven sheet.

In this disposable mask, the cooling agent makes it easier for the wearer to feel the cooling sensation before the surface temperature of the mask decreases due to the endothermic reaction caused by the contact of the heat absorbing agent with the wearer's moist breath. This makes it easier for the wearer to feel the cold sensation due to the mask from the time of wearing the mask.

In this disposable mask, the non-woven fabric sheet has the other side surface smoother than one side surface, the other side surface forms at least a part of the skin side surface of the mask main body, and the heat absorbing agent is provided at least on the other side surface. side surface.

In such a disposable mask, the surface of the other side, which is smoother than the surface of one side, has a larger contact area with the skin than the surface of the one side. Therefore, by providing a heat absorbing agent on the surface of the other side, the wearer can feel the coldness more easily.

This disposable mask does not include a fragrance generator that produces a fragrance due to dissolution caused by moisture.

In such a disposable mask, even in a case where the disposable mask does not include a fragrance generating body, it is easier for the wearer to feel a cold feeling due to the mask immediately after wearing the mask.

===First Embodiment==

Fig. 1 is a plan view of a disposable mask 1 (hereinafter also referred to as "mask") of the first embodiment. Fig. 2 is a sectional view of the mask 1 taken along the line I-I in Fig. 1 . Fig. 3 is a diagram showing the mask 1 in the worn state.

(Basic structure of mask 1)

The mask 1 includes: a mask main body 10 capable of covering at least the wearer's mouth and nostrils; and ear hooks 20 for hanging around the wearer's ears. The mask main body 10 has an up-down direction, a left-right direction, and a thickness direction. In the thickness direction, the inner side facing the face of the wearer is also referred to as the skin side or the skin side, and the outer side is the side opposite to the inner side and is also referred to as the non-skin side or the non-skin side.

The mask main body part 10 before use has the rectangular shape long in the left-right direction in the plan view (FIG. 1) seen from the thickness direction. The mask main body 10 has a filter member 11 that collects at least one of virus droplets and bacterial droplets, a skin side non-woven fabric sheet (non-woven fabric sheet) 12 that is arranged on the skin side of the filter member 11, and a side panel 13.

The filter member 11 is a member having a high collection effect on fine particles such as virus droplets, bacterial droplets, and pollen. Specifically, it is preferable that the filter member 11 satisfies at least one of BFE (bacterial filtration efficiency test: test particle is about 3 μm) of 95% or more and VFE (virus filtration efficiency test: test particle is about 1.7 μm) of 95% or more components.

The filter member 11 is, for example, a nonwoven sheet made of polyolefin-based fibers that has undergone dielectric polarization (subjected to electret treatment). As a result of the electret treatment, a collection function is realized by providing a predetermined amount of positive or negative charge to the surface of the polyolefin-based fiber to be polarized to form a dielectric state.

Specifically, the filter member 11 may be, for example, a one-piece seamless nonwoven fabric sheet integrally formed of a melt-blown nonwoven fabric subjected to electret treatment and containing polypropylene fibers which are polyolefin-based fibers. a sheet; and a spunbond nonwoven sheet subjected to electret treatment and comprising polypropylene fibers. The meltblown nonwoven sheet disposed on the skin side preferably has an average fiber diameter of 0.5 μm to 3 μm and a basis weight of 1.5 g/m ² to 5 g/m ² . The spunbond nonwoven sheet disposed on the non-skin side preferably has an average fiber diameter of 15 μm to 30 μm and a basis weight of 18 g/m ² to 50 g/m ² . In addition, for example, the nonwoven fabric sheet may be formed of only polypropylene fibers, or may be formed of polypropylene fibers to which polyethylene fibers are added. In addition, the non-woven fabric sheet on the non-skin side is not limited to the spun-bonded non-woven fabric sheet. Spunlace nonwoven sheets, breathable nonwoven sheets or needle punched nonwoven sheets can be used. However, the configuration is not limited thereto. The filter member 11 may not be subjected to electret treatment. For example, a member (nanofilter, etc.) that has small fiber gaps and collects virus droplets and the like by attaching the virus droplets and the like in the fiber gaps can be used as the filter member 11 .

The skin-side nonwoven fabric sheet 12 includes a heat absorbing agent 30 . The skin-side nonwoven fabric sheet 12 needs to be a nonwoven fabric sheet in which the heat absorbing agent 30 can be coated. A nonwoven fabric sheet having a good touch is preferable, and a spunbonded nonwoven fabric sheet made of polypropylene fibers or the like can be exemplified.

The mask 1 of the first embodiment is a pleated mask in which, at the central portion of the mask main body 10 in the up-down direction, the filter member 11 and the skin-side non-woven fabric sheet 12 are folded into folds at the fold F extending in the left-right direction. shape to form folds. The mask main body portion 10 shown in FIG. 2 has four folds F1 to F4 visible on the non-skin side and four folds F5 to F8 visible on the skin side. The folds F1 to F3 and F8 are mountain-shaped folds convex upward, and the folds F4 and F5 to F7 are valley-shaped folds convex downward. However, the number and orientation of the creases F are not limited to the configuration illustrated in FIG. 2 .

In the mask 1 before use, the creased folded shape is maintained, and the mask main body 10 is in an almost flat state. The pleat-shaped creases F allow the mask main body 10 to expand up and down and bulge toward the non-skin side in an omega-shaped manner. Thus, as shown in FIG. 3 , the wearer of the mask 1 can expand the mask main body 10 up and down according to the length from the nose to the chin, so that the mouth and nostrils can be covered with the mask main body 10 .

Moreover, the upper end part and the lower end part of the mask main body part 10 each have the folded part 101 which folded the filter member 11 and the skin side nonwoven fabric sheet 12 toward the non-skin side. It should be noted that in the following description, a portion of the mask main body portion 10 overlapping with the folded portion 101 in the thickness direction will be referred to as a non-turned portion 102 . The folded portion 101 improves the strength of the upper end portion and the lower end portion of the mask main body 10 . In addition, the folded portion 101 can suppress the expansion of the filter member 11 and the skin-side nonwoven fabric sheet 12 .

The side panels 13 are provided on both sides in the left-right direction of the mask main body 10 . The side panels 13 are arranged to sandwich the left and right sides of the filter member 11 and the skin side non-woven fabric sheet 12 from the skin side and the non-skin side, and the filter member 11 and the non-woven fabric sheet 12 are in a position to maintain the folded fold F And the state of the up and down turning part 101. Preferably, the side sheet 13 is a sheet with good air permeability or touch, for example, a melt-blown non-woven sheet, a spun-bonded non-woven sheet, an SMS non-woven sheet, a breathable non-woven sheet, etc. can be used.

The mask main body portion 10 has a welded portion 14 integrally joining overlapping sheets; for example, the welded portion 14 is formed by thermal welding, ultrasonic welding, or the like. As shown in FIG. 1 , on both sides in the lateral direction of the mask main body 10 , a plurality of welded portions 14 joining the filter member 11 , the skin side nonwoven sheet 12 and the side panel 13 are provided along the up and down direction. A plurality of welded portions 14 joining the filter member 11 and the skin-side nonwoven fabric sheet 12 are provided along the left-right direction at the upper and lower ends and the central portion of the mask main body 10 in the vertical direction. However, the pattern of the welded portion 14 is not limited to the pattern shown in FIG. 1 . In addition, it is also possible to join sheets overlapping each other using an adhesive or the like (for example, a hot-melt adhesive).

In addition, as shown in FIG. 2 , at the upper end of the mask main body 10 , a shape retaining member 15 is provided between the filter member 11 in the folded portion 101 and the filter member 11 in the non-turned portion 102 . The shape maintaining member 15 is a rectangular thin plate-shaped member that can be easily bent by the wearer and maintains its shape as long as no external force is applied again. A member formed of a flexible thermoplastic resin or a metal sheet can be exemplified as the shape maintaining member 15 . The wearer of the mask 1 can deform the shape retaining member 15 according to the shape of the nose, so that a gap can be suppressed from being generated between the upper end portion of the mask main body 10 and the wearer's face. Furthermore, the welded portion 14 is provided on both sides of the shape maintaining member 15 in the up-down direction, which prevents the positional displacement of the shape maintaining member 15 .

The ear hooks 20 are ring-shaped members extending from both sides in the left-right direction of the mask main body 10 . The ear hook portion 20 is a stretchable member, and for example, a rubber cord, stretchable nonwoven fabric sheet, stretchable film, or the like can be used. The ear hook portion 20 illustrated in FIG. 1 is a rubber cord, and is joined to the non-skin side surface of the mask main body portion 10 by the joint portion 16 . One end of the rubber cord (20) is engaged to the engaging portion 16 in the upper end portion of the mask main body portion 10, and the other end of the rubber cord (20) is engaged to the engaging portion 16 in the lower end portion of the mask main body portion 10. Welding or bonding with an adhesive may be used as the bonding means of the bonding portion 16 .

(Mask 1 with endothermic agent 30)

Unlike masks formed of (reused after washing) gauze or the like, the mask 1 of the present embodiment includes a filter member 11 that collects virus droplets or bacterial droplets. Therefore, in order to prevent the collection effect of the filter member 11 from decreasing due to washing, the mask 1 of the present embodiment is assumed to be a disposable mask.

Wearing a mask can suppress the intrusion of fine particles such as virus droplets, but the internal space of the mask tends to cause stuffiness due to the wearer's moist breath. Especially during hot summer, etc., there is a risk of heat stroke due to stuffy heat inside the mask.

Therefore, in the mask 1 of the present embodiment, the skin side nonwoven fabric sheet 12 containing the heat absorbing agent 30 is provided on the skin side of the filter member 11 . The endothermic agent 30 is a reagent that reacts with water to cause an endothermic reaction.

Therefore, the wearer's moist breath comes into contact with the heat-absorbing agent 30 in the skin-side nonwoven fabric sheet 12, and the heat-absorbing agent 30 causes an endothermic reaction. Thereby, the surface temperature of the mask 1 is reduced, and stuffiness in the mask 1 is improved. This can alleviate breathing difficulties caused by wearing the mask 1, and can suppress heatstroke of the wearer.

In particular, the filter member 11 that collects virus droplets and the like has lower air permeability (higher air permeability resistance value) than the skin-side nonwoven fabric sheet 12 . Therefore, compared with the mouth mask that is made of gauze and the like and does not have the filter member 11, in the mouth mask 1 of the present embodiment, the wearer's breath is not easy to be discharged outside the mouth mask 1, and the airtightness of the internal space of the mouth mask 1 is relatively low. high. That is to say, the breath exhaled by the wearer or the heat absorbing agent 30 does not pass through the filter member 11 easily, and stays in the inner space of the mask 1 easily. This increases the contact time for the breath of the wearer to be in contact with the heat-absorbing agent 30, so that the surface temperature of the mask 1 is easily reduced and the stuffiness in the mask 1 is easily improved. This makes it easier for the wearer to feel the coldness inside the mask 1 . In addition, the breath of the wearer makes it easier for the breath containing the heat-absorbing agent 30 to circulate inside the filter member 11, which also improves the continuation of the cooling effect. This also makes it easier for the wearer to feel the coldness in the mask 1 .

Furthermore, preferably, the mask 1 has a shape maintaining member 15 . This makes it difficult to generate a gap between the mask 1 and the wearer (face), and improves the airtightness of the inner space of the mask 1 . This increases the contact time and air circulation of the heat absorbing agent 30 with the wearer's breath, and improves the cooling effect and its persistence. However, the configuration is not limited thereto, and the mask 1 may not have the shape maintaining member 15 .

In addition, unlike the mask 1 of the present embodiment, for example, when a moisturizing agent or the like provided in the mask is brought into contact with the wearer's skin to give the wearer a cool feeling (cold feeling on contact), the cool feeling comes from moisturizing. The temperature difference between the temperature of the agent and the body temperature of the wearer. Therefore, when the temperature of the outside air is high and the temperature of the humectant at which the temperature becomes approximately equal to the temperature of the outside air is high, the cooling effect is low, and the moisturizer is not enough to improve the stuffiness inside the mask, making it difficult for the wearer to feel Cold sensation. Generally, the outer peripheral end of the mask tends to be in close contact with the wearer's skin, but on the other hand, there tends to be a space between the central part of the mask and the wearer. Therefore, in the mask that imparts a cold feeling to the touch, in the central part (nostril or mouth) of the mask that is likely to be stuffy due to the wearer's breath, the wearer's skin is not easily in contact with the moisturizer, making it difficult for the wearer to feel Cold sensation.

On the contrary, in the mask 1 of this embodiment, the endothermic reaction of the endothermic agent 30 is utilized. Thereby, even in hot summer, the cold feeling is not easily affected by the outside air temperature, and the surface temperature of the mask 1 can be lowered. Thereby, stuffiness in the mask 1 can be improved. In addition, in the mask 1 of the present embodiment, since the temperature of the inner space of the mask 1 is lowered, the wearer can feel a cold feeling even in a part where the mask 1 and the wearer's skin do not contact each other. Especially, even in the central part (nostril or mouth) of the mask 1 that is easy to be stuffy due to the wearer's breath and has a gap between the wearer's skin, the wearer can feel the coolness.

Preferably, the endothermic agent 30 (endothermic component) contains any one of sugar alcohol and sugar. As the sugar alcohol, xylitol, erythritol, glucose, sorbitol and the like can be used. Trehalose, sucrose, lactose, maltose, etc. can be used as sugar. These heat absorbers 30 are safe even when in contact with the mouth of the wearer of the mask 1 .

Furthermore, the heat absorbing agent 30 has preferably been mixed into at least a part of the fibers constituting the skin-side nonwoven fabric sheet 12 . That is to say, in order to set the heat-absorbing agent 30 before forming the skin-side nonwoven fabric sheet 12, it is recommended, for example, to impregnate the fiber web to be formed with the heat-absorbing agent 30 (solution), or to mix the fiber web with the heat-absorbing agent 30 (solution) The resin of thermal agent 30 forms fibers. In addition, an adhesive mixed with a heat absorbing agent 30 may be applied to the fiber web.

This makes it difficult for the heat-absorbing agent 30 to detach from the skin-side non-woven fabric sheet 12 , so that the function of the heat-absorbing agent 30 is gradually exerted, thereby improving the durability of the cooling effect of the heat-absorbing agent 30 . Furthermore, this makes it possible to suppress the decrease in the collection function of the filter member 11 due to the heat absorbing agent 30 adhering to the filter member 11 before the mask 1 is used.

However, the configuration is not limited thereto. The heat absorbing agent 30 may be provided on the surface of the fibers constituting the skin-side nonwoven fabric sheet 12 . For example, the heat absorbing agent 30 can be applied to the skin-side nonwoven fabric sheet 12 by various well-known application methods such as spraying, rolling, or brushing. In addition, the skin-side nonwoven fabric sheet 12 may be immersed in the heat absorbing agent 30 (solution). In this case, the endothermic agent 30 easily comes into contact with the wearer's breath, and an endothermic reaction easily occurs. Therefore, the cooling effect improves.

More preferably, the heat absorbing agent 30 is applied to the skin-side surface of the skin-side nonwoven fabric sheet 12 . Arranging the heat absorbing agent 30 near the wearer makes it easier for the heat absorbing agent 30 to be in contact with the wearer's breath, and improves the cooling effect. In addition, endothermic reactions tend to occur near the wearer, which makes it easier to reduce the surface temperature of the mask 1, making it easier for the wearer to feel cold. However, the configuration is not limited thereto, and the heat absorbing agent 30 may be applied to the non-skin-side surface of the skin-side nonwoven fabric sheet 12 , or may be applied to both surfaces of the skin-side nonwoven fabric sheet 12 .

It should be noted that the heat absorbing agent 30 may be liquid or solid (gel, powder, etc. are also included). In addition, a configuration in which microcapsules containing a heat-absorbing agent 30 is provided on the skin-side nonwoven fabric sheet 12 is also acceptable, and the heat-absorbing agent 30 is released by a physical or chemical stimulus (for example, heat, pressure, shock, light, liquid, etc.) . In addition, the endothermic agent 30 contains a solvent for dissolving and dispersing an endothermic component having an endothermic effect.

In addition, the heat absorbing agent 30 may be provided on the entire plane of the skin-side nonwoven fabric sheet 12 , or may be provided on a part of the plane of the skin-side nonwoven fabric sheet 12 . In addition, the heat absorbing agent 30 may be provided in a uniform basis weight (amount per unit area: g/m ² ) over the entire skin-side nonwoven fabric sheet 12, or may be provided in a different amount depending on the area of the skin-side nonwoven fabric sheet 12. Basis weight setting.

Furthermore, preferably, the skin-side nonwoven fabric sheet 12 contains hydrophilic fibers. More preferably, the skin-side nonwoven fabric sheet 12 contains 50% or more of hydrophilic fibers. This makes it easier to retain moisture contained in the wearer's breath in the skin-side nonwoven fabric sheet 12, and makes it easier for the heat absorbing agent 30 in the skin-side nonwoven fabric sheet 12 to come into contact with moisture. Accordingly, the contact time becomes longer. This makes it easier for an endothermic reaction based on the endothermic agent 30 to occur, and improves the cooling effect.

Examples of hydrophilic fibers include regenerated cellulose fibers such as rayon, natural cellulose fibers such as cotton or ground pulp, semi-synthetic cellulose fibers such as acetate, and the like. Alternatively, hydrophobic fibers (for example, polyethylene fibers, polypropylene fibers, etc.) may be modified to be hydrophilic by hydrophilizing them. Regarding the judgment of hydrophilic fibers, for example, fibers with a contact angle of less than 90 degrees can be judged as highly hydrophilic fibers. However, the configuration is not limited thereto, and the skin-side nonwoven fabric sheet 12 may not contain hydrophilic fibers.

In addition, preferably, the non-skin side surface of filter member 11 forms at least a part of the non-skin side surface of mask body part 10, and the skin side surface of skin side nonwoven fabric sheet 12 forms at least a part of the skin side surface of mask body part 10 . This reduces the number of sheets laminated in the thickness direction in the mask main body portion 10, and can make the inner space of the mask 1 less likely to be stuffy. In the mask main body 10 of the present embodiment, the remaining regions other than the two side portions in the left-right direction provided with the side panels 13 are formed by two nonwoven fabric sheets (filter member 11 and skin-side nonwoven fabric sheet 12).

Also, in the above case, the skin-side nonwoven fabric sheet 12 provided with the heat-absorbing agent 30 is positioned closest to the skin side of the mask main body portion 10 . This makes it easier for the heat absorbing agent 30 to come into contact with the wearer's breath and improve the cooling effect. In addition, endothermic reactions tend to occur near the wearer, which makes it easier for the surface temperature of the mask 1 to drop, making it easier for the wearer to feel cold.

In addition, because the side panels 13 are not positioned in the central part, the central part of the mask main body 10 in the left-right direction and the up-down direction is formed by two non-woven fabric sheets, and in addition, the upper and lower folded parts 101 are not positioned. In the central portion (pleat-shaped creases F are located, but these creases F are developed in the up and down direction in the state of wearing the mask). That is to say, at the part of the mask 1 where the wearer's nostrils or mouth are positioned and which is prone to stuffiness, the number of laminated sheets in the thickness direction becomes substantially two, which can make the inner space of the mask 1 less stuffy.

However, the structure of the mask main body 10 is not limited thereto. For example, other sheets may be provided on the non-skin side relative to the filter member 11 , or on the skin side relative to the skin-side nonwoven fabric sheet 12 , or between the filter member 11 and the skin-side nonwoven fabric sheet 12 .

Further, preferably, the air permeability resistance value of the filter member 11 is 0.45 kPa·s/m or less and preferably 0.3 kPa·s/m or less. When the air permeability resistance value of the filter member 11 is higher than 0.45 kPa·s/m, even when the mask 1 has a heat absorbing agent 30, there is a risk that the wearer will feel stuffy inside the mask 1 more easily. Therefore, in addition to providing the cooling effect of the heat absorbing agent 30, the appropriate air permeability of the filter member 11 is also maintained, so that the stuffiness in the mask 1 can be improved even in hot summer and the like.

Here, preferably, the air permeability resistance value of the filter member 11 is higher than the air permeability resistance value of the skin-side nonwoven fabric sheet 12 . This makes the wearer's breath and the heat-absorbing agent 30 moderately stay in the inner space of the mask 1, and increases the contact time of the wearer's breath and the heat-absorbing agent 30. Thereby, the heat absorption effect and its sustainability are improved.

The air resistance value of the filter member 11 can be measured by a known method. For example, the filter member 11 is separated from the mask 1 using cold spray or the like, and the filter member 11 is cut into a predetermined size (for example, a circular shape with a diameter of 100 mm) to be used as a sample. Also, using an air permeability tester (KES-F8) manufactured by Kato-Tec Corporation or an equivalent air permeability tester, with the standard air velocity set at 2 cm/s, the air permeability resistance value of the sample was measured. This measurement is performed a plurality of times (for example, five times), and the average value thereof can be taken as the air permeability resistance value of the filter member 11 .

Furthermore, as described above, the filter member 11 of the present embodiment is a nonwoven fabric sheet made of polyolefin-based fibers that has undergone dielectric polarization (subjected to electret treatment). With the filter member 11 having the collecting function due to electric charges as described above, the collecting function is lowered due to the attachment of alcohol.

Therefore, when the filter member 11 described above is used, it is preferable that the heat absorbing agent 30 does not contain alcohol. This makes it possible to prevent the collection effect of the filter member 11 from deteriorating. For example, the solvent contained in the endothermic agent 30 is preferably an aqueous solvent. In addition, for example, in the case of applying a solution obtained by dissolving and dispersing an endothermic component in an alcohol-based solvent to the skin-side nonwoven fabric sheet 12, preferably, in the production line of the mask 1, the alcohol-based The solvent is vaporized, and then the skin-side nonwoven fabric sheet 12 is bonded to the filter member 11 . In this way, it is preferable to make the heat absorbing agent 30 in the mask 1 free of alcohol.

Furthermore, preferably, the heat absorbing agent 30 is non-volatile. This makes it possible to suppress the endothermic agent 30 from volatilizing toward the filter member 11 side and adhering to the filter member 11 before using the mask 1 , reducing the collection function of the filter member 11 . The non-volatile heat absorbing agent 30 is a substance that does not become a gas in a normal living environment and has a boiling point of 100° C. or higher.

Furthermore, preferably, the filter member 11 has a lower basis weight of the heat absorbing agent 30 than the skin-side nonwoven fabric sheet 12 , and more preferably, the filter member 11 is not provided with the heat absorbing agent 30 . Thus, a large amount of heat absorbing agent 30 is provided in the nonwoven fabric sheet 12 on the wearer's skin side. This makes it easier for the heat absorbing agent 30 to come into contact with the wearer's breath and improve the cooling effect. In addition, endothermic reactions tend to occur near the wearer, which makes it easier for the surface temperature of the mask 1 to drop, making it easier for the wearer to feel the coldness. Furthermore, this makes it possible to suppress a decrease in the collection function of the filter member 11 due to the heat absorbing agent 30 adhering to the filter member 11 .

The basis weights of the heat absorbing agent 30 provided in the filter member 11 and the skin-side nonwoven fabric sheet 12 can be compared by a known method. For example, there is a method of separating the filter member 11 and the skin-side non-woven fabric sheet 12 from the mask 1 using cold spray or the like, and scattering colored fine particles such as bamboo coal or cocoa powder on the filter member 11 and the skin-side non-woven fabric. Each of the sheets 12 is then removed from the particles. A large number of particles adhere to the portion where the heat-absorbing agent 30 is disposed. This makes it possible to compare the basis weight of the heat absorbing agent 30 by comparing the amounts of particles attached to the filter member 11 and the skin-side nonwoven fabric sheet 12 .

Alternatively, the surface temperatures of the filter member 11 and the skin-side non-woven fabric sheet 12 may be compared by blowing steam to each of the filter member 11 and the skin-side non-woven fabric sheet 12 . The specific method is as follows. Samples were prepared by cutting the filter member 11 and the skin-side nonwoven fabric sheet 12 into predetermined sizes, putting water in two containers such as beakers, and then covering the containers with each sample. Mount the temperature sensor on the sample, and cover the samples in both containers with wrapping film or the like from above. The temperature of each sample was compared by placing both containers in a water bath warmed to 40°C. In the sample having the endothermic agent 30 having a larger basis weight, the temperature of the sample decreases due to the endothermic reaction of the endothermic agent 30 as time elapses.

Further, using the method described above, it can be confirmed that the heat absorbing agent 30 has been applied to the skin-side surface of the skin-side nonwoven fabric sheet 12 . For example, in the method of sprinkling particles, when the particles adhere to the skin-side surface of the skin-side nonwoven fabric sheet 12, it can be confirmed that the heat absorbing agent 30 has been applied to the skin-side surface of the skin-side nonwoven fabric sheet 12. Also, in the method of blowing steam and measuring the temperature, a nonwoven fabric sheet having the same configuration as the skin-side nonwoven fabric sheet 12 but not provided with the heat absorbing agent 30 is prepared. When the temperature of the skin-side surface of the skin-side nonwoven fabric sheet 12 is lower than that of the nonwoven fabric sheet, it can be confirmed that the heat absorbing agent 30 has been applied to the skin-side surface of the skin-side nonwoven fabric sheet 12 .

Moreover, in the mask main body part 10, it is preferable that the outer peripheral end of the filter member 11 and the outer peripheral end of the skin side nonwoven fabric sheet 12 correspond to each other. In the mouth mask 1 of present embodiment, as shown in Figure 1, the left end 11c of filter member 11 and the left end 12c of skin side nonwoven fabric sheet 12 are consistent with each other, the right end 11d of filter member 11 and the skin side nonwoven fabric sheet 12 The right ends 12d coincide with each other. In addition, as shown in Figure 2, the upper end 11a of the filter member 11 and the upper end 12a of the skin side nonwoven sheet 12 coincide with each other, and the lower end 11b of the filter member 11 and the lower end 12b of the skin side nonwoven sheet 12 coincide with each other. It should be noted that the positional deviation of the upper and lower turn-back portions 101 caused by the thickness of the sheet is not included. In addition, the end of the filter member 11 and the end of the skin-side nonwoven fabric sheet 12 do not have to match among the ends 101a and 101b on the center side in the vertical direction of the folded portion 101 .

From the above description, the skin-side nonwoven fabric sheet 12 and the heat absorbing agent 30 can be provided over a wide range of the plane of the mask main body 10 . Thereby, the heat absorbing agent 30 can further lower the temperature in a wide range of the internal space of the mask 1 . In addition, the filter member 11 can be provided over a wide range of the plane of the mask main body portion 10, and a collection effect can be obtained. However, the configuration is not limited thereto, and the outer peripheral end of the filter member 11 and the outer peripheral end of the skin-side nonwoven fabric sheet 12 do not necessarily coincide with each other.

In addition, in the mask 1 of the first embodiment, the filter member 11 and the skin-side nonwoven fabric sheet 12 are folded into a pleat-like shape in the center portion in the up-down direction of the mask main body 10 . When the mask 1 is worn, the gathered portion is spread in the vertical direction in the left-right direction central portion of the mask main body 10 . However, the filter member 11 and the skin-side nonwoven fabric sheet 12 are joined by the welded portion 14 in a state of being folded into a pleat-like shape in both side portions in the left-right direction of the mask main body portion 10 . In addition, on both sides of the left-right direction of the mask main body 10, the upper end and the lower end of the filter member 11 and the upper and lower ends of the skin-side non-woven fabric sheet 12 are joined by the welded part 14 in a folded state.

That is to say, on both sides of the left-right direction of the mask main body 10, the state of the cross-section shown in FIG. 2 is maintained even when the mask 1 is worn. Specifically, at the upper end and the lower end, the skin-side nonwoven fabric sheet 12 has a two-layer structure overlapping in the thickness direction due to the folded portion 101 . There is a portion where the skin-side nonwoven fabric sheet 12 has a three-layer structure overlapping in the thickness direction due to wrinkles in the center portion in the up-down direction.

It should be noted that, as in the mask 1, when the mask main body 10 has the upper and lower turnbacks 101, the "upper end" of the mask body 10 is the upper turnback 101, the "lower end" is the lower turnback 101, and the "central part" is the upper turnback 101. "Part" is a part that does not have the folded part 101 and is located between the upper end part and the lower end part in the up-down direction. In the case of a mask that does not have a turn-back portion 101 different from the mask 1, when the length of the upper half of the mask main body 10 in the up-down direction is quartered, the uppermost part (with a quarter length and located at The part on the upper side of the upper half) is the "upper end". When the length of the lower half of the mask main body 10 in the up-down direction is quartered, the lowermost part (the part that has a quarter length and is positioned on the lower side of the lower half) is the "lower end". A portion between the upper end portion and the lower end portion in the up-down direction is the “central portion”. In addition, in the left-right direction of the mask main body 10, when the length of one side (left side) of the mask main body 10 in the left-right direction is quartered, the most side part (in the left half) The portion with the quarter length on the left side) is the "side" of one side. When the length of the other side (right side) of the mouth mask main body 10 in the left-right direction was quartered, the part on the other side (the one with a quarter length on the right side of the right half) part) is the "side" of the other side. The part between the two side parts is called "central part".

By uniformly disposing the heat-absorbing agent 30 in the skin-side non-woven fabric sheet 12, the skin-side non-woven fabric sheet 12 has a three-layer overlapping structure compared with the upper and lower ends of the skin-side non-woven fabric sheet 12 having a two-layer overlapping structure. The basis weight (g/m ² ) of the heat-absorbing agent 30 can be set higher at the central portion in the vertical direction of the structure.

The ear hooks 20 are joined to upper and lower ends at both sides in the left-right direction of the mask main body 10 . Due to the tensile force of the earhook portion 20 , the upper end and the lower end are more likely to be in close contact with the wearer's skin than the central portion in the vertical direction, so that the wearer can feel the cooling effect of the heat absorbing agent 30 more easily. On the contrary, since the central part in the vertical direction is close to the nostrils or mouth of the wearer, it tends to be stuffy, but the heat absorbing agent 30 is likely to come into contact with the moist breath of the wearer. Therefore, it is preferable to set the basis weight of the endothermic agent 30 in the above manner. In this case, in each of the two side portions in the left-right direction of the mask main body 10, the central portion in the up-down direction is relatively low in close contact with the wearer's skin, but there are a large amount of heat-absorbing agent 30 and the wearer's skin. The part that the wearer's breath comes into contact with. This improves the cooling effect and makes it easier for the wearer to feel the cooling. In addition, among the two side parts in the left-right direction of the mask main body part 10, the center part in the up-down direction is a part that has a lower degree of adhesion than the upper end part and the lower end part, but contacts the wearer's cheek. Therefore, by increasing the basis weight of the heat absorbing agent 30 in these portions, it is easier for the wearer to feel a cold feeling.

In addition, when wearing the mask 1, the folded portion can be expanded in the up-down direction in the left-right direction central part of the mask main body 10, but not fully expanded, and the skin-side non-woven fabric sheet 12 partially has a three-layer overlapping structure. The basis weight (g/m ² ) of the heat absorbing agent 30 is higher in the center portion in the vertical direction than in the upper end portion and the lower end portion in the left-right direction center portion of the mask main body 10 . Since the breath of the wearer is in contact with a large amount of heat-absorbing agent 30, the cooling effect is enhanced.

In other words, in the mask 1 having the folds F, the skin-side nonwoven fabric sheet 12 may have a three-layer structure stacked in the thickness direction at the vertically central portion of the mask main body 10 . Even in the case where the heat-absorbing agent 30 is uniformly arranged in the skin-side non-woven fabric sheet 12, the basis weight of the heat-absorbing agent 30 in the central part of the up-down direction can be higher than that of the upper end and the lower end of the mask main body 10. basis weight in . This makes it possible to enhance the cooling effect of the vertically central portion of the mask 1 .

In addition, as shown in FIG. 2 , preferably, the upper end and the lower end of the mask main body 10 have a folded portion 101 formed by folding the filter member 11 and the skin-side non-woven fabric sheet 12 toward the non-skin side. In addition, it is preferable that the heat absorbing agent 30 is provided on the skin-side surface 102A of the non-turned portion 102 which is a portion overlapping with the folded portion 101 in the thickness direction, that is, the heat absorbing agent 30 is provided on the skin side surface 102A. The skin side surface of the side nonwoven fabric sheet 12. It should be noted that the folded portion 101 may be a portion where only the skin-side nonwoven fabric sheet 12 is folded toward the non-skin surface.

The upper and lower ends of the mask main body 10 are turned back toward the non-skin surface, which prevents the filter member 11 from covering the skin-side nonwoven fabric sheet 12 from the skin side in the upper and lower ends of the mask main body 10 . That is, in the upper end portion and the lower end portion of the mask main body portion 10, the skin side nonwoven fabric sheet 12 provided with the heat absorbing agent 30 can be exposed toward the skin side. This causes an endothermic reaction of the endothermic agent 30 to occur at a position close to the wearer, thereby making it easier for the wearer to feel a cold sensation. In particular, the upper end and the lower end of the mask main body 10 are more likely to be in close contact with the wearer's skin than the central part in the up-down direction, and thus the wearer is more likely to feel a cold sensation.

In addition, as described above, in the case where the upper end of the mask main body 10 is turned back toward the non-skin side, it is preferable that the heat absorbing agent 30 is also provided on the non-skin side surface (outer side surface) of the turned-back part 101 in the upper end. 101A, namely, is provided on the non-skin side surface of the skin side nonwoven fabric sheet 12 .

Since the breath exhaled by the wearer is warm, the breath discharged from the wearer to the outside of the mask main body 10 tends to rise. This enables breath discharged out of the mask main body portion 10 to come into contact with the heat absorbing agent 30 provided on the non-skin side surface 101A in the upper end portion of the mask main body portion 10 . This makes it possible to reduce the temperature near the upper end of the mask main body 10, and to increase the heat-absorbing agent 70 by setting the heat-absorbing agent 70 on both the skin side and the non-skin side of the mask main body 10. The amount of contact with the wearer's skin. As a result, the wearer is more likely to feel the coldness. In addition, since the temperature of the breath discharged out of the mask main body 10 is also lowered, the wearer's glasses are less prone to fogging.

However, the configuration is not limited to this. For example, the following configurations are acceptable: the upper and lower ends of the mask main body 10 are turned back toward the skin side; or only one of the upper and lower ends of the mask main body 10 is turned back toward the non-skin side. In addition, the heat absorbing agent 30 may not be provided on the non-skin side surface of the upper folded portion 101 .

In addition, the ear loop portion 20 (rubber cord) in the mask 1 of the first embodiment is joined to the non-skin side surface of the mask main body portion 10 by the joining portion 16 . In this case, the ear hook portion 20 can be prevented from covering the skin-side nonwoven fabric sheet 12 from the skin side. This makes it possible to dispose the skin-side nonwoven fabric sheet 12 having the heat absorbing agent 30 at a position close to the wearer (so that the skin-side nonwoven fabric sheet 12 is exposed toward the skin side). Therefore, in the joint portion 16 of the earhook portion 20, an endothermic reaction of the heat-absorbing agent 30 also occurs at a position close to the wearer, so that the wearer can feel a cold feeling more easily. In particular, due to the stretching force of the earhook portion 20, the portion of the skin-side non-woven fabric sheet 12 corresponding to the joint portion 16 of the earhook portion 20 is likely to be in close contact with the wearer's skin, so that the wearer is more likely to feel a cold feeling. .

==Second Embodiment==

Fig. 4A is the plan view of the disposable mouth mask 2 (hereinafter also referred to as "mask") of the second embodiment in the folded state, and Fig. 4B is the front view of the mouth mask 2 in the unfolded state. Fig. 5 is a front view of the mask 2 in the wearing state. Fig. 6 is a schematic diagram of the mask 2 in the worn state when viewed from above. Hereinafter, parts of the mask 2 of the second embodiment that are different from the mask 1 of the first embodiment will be mainly described.

The mask 2 of the second embodiment has a mask main body 40 and ear hooks 50 . The mask main body 40 has an up-down direction and a left-right direction when the mask 2 is worn and when the mask 2 is unfolded. The side facing the wearer is defined as the skin side (skin facing side), and the opposite side thereof is defined as the non-skin side (non-skin facing side). In addition, the mask main body portion 40 includes: a pair of sheet parts 43 and 44 covering the wearer's right and left faces, respectively; a joint part 45 that engages the pair of sheet parts 43 and 44 with each other; a shape maintaining member 46; The hook portion 50 is joined to the joint portion 47 of the pair of piece parts 43 and 44 . The junctions 45 and 47 can be made by known methods such as welding, compression, or adhesive.

In the left-right direction of the mask main body 40, about the shortest part of the length of the left-right direction of the mask main body 40, when the length of a side (left side) of the mask main body 40 in the left-right direction is quartered, The sidemost portion (the portion with a quarter length to the left of the left half) is the "end" of one side. When the length of the other side portion (right side portion) of the mouth mask main body portion 40 in the left-right direction was quartered, the part on the other side (the part with a quarter length on the right side of the right half part) ) is the "end" on the other side. A portion between both side end portions in the left-right direction is referred to as a “central portion”.

As shown in FIG. 4A , in a state where the skin-side surfaces of the pair of sheet parts 43 and 44 are overlapped to face each other, the pair of sheet parts 43 and 44 pass along the end edges 43 a and 44 a of the pair of sheet parts 43 and 44 . The extended engagement portion 45 engages. The end edges 43a and 44a have an outwardly convex curved shape. Thus, when the mask 2 of the folded state (planar shape) is unfolded in a manner that a pair of sheet parts 43 and 44 are separated from each other (Fig. 4B), the mask main body part 40 is formed into a three-dimensional shape (cup shape) in which the skin side surface is concave. .

Furthermore, similarly to the mask 1 of the first embodiment, the mask 2 of the second embodiment is a mask assumed for one-time use. In addition, as shown in Figure 6, the mouth mask main body portion 40 (a pair of sheet portions 43 and 44) includes: a filter member 41, which collects at least one of virus droplets and bacterial droplets; and a skin side non-woven fabric sheet ( non-woven fabric sheet) 42 which is provided on the skin side of the filter member 41 and provided with the heat absorbing agent 30 .

Therefore, when the wearer's moist breath comes into contact with the heat-absorbing agent 30 in the skin-side nonwoven fabric sheet 42, the heat-absorbing agent 30 causes an endothermic reaction, and the surface temperature of the mask 2 decreases. Thereby, stuffiness in the mask 2 can be improved. In particular, the mask 2 of the second embodiment forms a three-dimensional shape when worn, making it easy to create a space between the mask 2 and the wearer. Therefore, the surface temperature of the mask 2 is lowered by the heat-absorbing agent 30, so that the wearer can feel the cold feeling more easily.

In addition, the pair of sheet parts 43 and 44 each have a shape maintaining member 46 at the upper end and between the filter member 41 and the skin-side nonwoven fabric sheet 42 . This improves the airtightness of the inner space of the mask 2 and improves the cooling effect and its persistence. However, the mask 2 may not have the shape maintaining member 46 .

Further, a pair of piece portions 43 and 44 are joined by a joint portion 45 in a state of overlapping on a plane ( FIG. 4A ). Therefore, as shown in FIG. 6, in the mask 2 in the wearing state, in the region from the junction 45 to the edges 43a and 44a of the pieces 43 and 44 (that is, at the junction of the pieces 43 and 44) Middle) The state in which the skin-side nonwoven fabric sheet 42 is laminated in a two-layer structure is maintained. Therefore, by uniformly disposing the heat-absorbing agent 30 in the skin-side nonwoven fabric sheet 42, the region from the joining portion 45 to the edge edges 43a and 44a of the sheet portions 43 and 44 can be made into a high basis weight portion 48, a high basis weight portion 48, and a high basis weight portion 48. The basis weight of the heat absorbing agent 30 in the heavy portion 48 is higher than that in other regions. It should be noted that the method for comparing the basis weights of the endothermic agents 30 can be performed in the same manner as the comparison method described above.

As mentioned above, in the mask 2 ( FIG. 5 ) in the wearing state, preferably, the central part 401 in the left-right direction of the mask main body 40 has a high basis weight part 48, and the base of the heat-absorbing agent 30 in the high basis weight part 48 The weight is higher than the basis weight in both end portions 402 in the left-right direction. This makes more heat-absorbing agent 30 can contact with the wearer's breath at the left-right direction central part of mouth mask 2 because wearer's breath is easy to stuffy, and improves the cold feeling of the left-right direction central part (nostril or mouth) of mouth mask 2 Effect. Therefore, the surface temperature of the mask 2 is further reduced. This can improve the stuffiness in the mask 2, making it easier for the wearer to feel the coldness.

In addition, the skin side non-woven fabric sheet 12 has a high basis weight portion 48 of the heat absorbing agent 30 of a two-layer overlapping structure (that is, the junction of the sheet portions 43 and 44), preferably from the upper end 40a of the mask main body portion 40 to the lower end 40b. Set continuously in the up and down direction.

In the mask 2 of the second embodiment that forms a three-dimensional shape (cup shape) when worn, a space is easily generated between the mask body 40 and the wearer in the left-right direction central portion of the mask body 40 . Therefore, it is preferable that the high basis weight part 48 of the heat absorbing agent 30 is provided in the center part of the left-right direction of the mask main body part 40 so that it may become long in the up-down direction. This allows the wearer's breath accumulated in the inner space of the mask 2 to come into contact with a large amount of heat absorbing agent 30, thereby enhancing the cooling effect.

Moreover, the ear hook part 50 of the mask 2 of 2nd Embodiment is made of an elastic sheet, and has the opening part 51 for hanging an ear. As shown in FIG. 6 , the ear hook portion 50 is joined to the skin-side surface of the mask main body portion 40 by the joint portion 47 . In this case, the skin-side surface of the skin-side nonwoven fabric sheet 12 provided with the heat-absorbing agent 30 is covered with the earhook portion 50 . However, due to the stretching force of the earhook portion 50 , the portion of the skin-side nonwoven fabric sheet 12 that is engaged with the earhook portion 50 is highly in close contact with the wearer's skin. This enables the wearer to feel a cool feeling even when the heat absorbing agent 30 is covered by the earhook portion 50 . In addition, the heat absorbing agent 30 does not come into direct contact with the wearer's skin at a portion that is highly in close contact with the wearer's skin, thereby reducing irritation to the wearer's skin.

==Third Embodiment==

Fig. 7 is a plan view of the disposable mask 3 of the third embodiment when viewed from the non-skin side. Fig. 8 is a plan view of the mask 3 when viewed from the skin side. Fig. 9 is a sectional view of the mask main body 10 taken along line I-I in Fig. 7 . It should be noted that FIG. 9 does not show the welded portion 14 . Each figure shows the mask 3 before use. Some configurations of the third embodiment are also applicable to the first embodiment.

(Basic structure of mask 3)

In the mask 3, parts common to the configuration of the mask 1 of the first embodiment are denoted by the same reference numerals and the like, and a detailed description of the basic configuration of the mask 3 is omitted. Similar to the mask 1 , the mask 3 includes a mask body 10 and an earhook 20 . The mask main body 10 has an up-down direction, a left-right direction, and a thickness direction. In the thickness direction, the inside facing the wearer's face is also called the skin side or the skin side, and the outside (the side opposite to the inside) is also called the non-skin side or the non-skin side.

The mask main body part 10 before use has the rectangular shape long in the left-right direction in the plan view (FIG. 7 and FIG. 8) seen from the thickness direction. The mask body part 10 has a filter member 11, a skin-side non-woven fabric sheet (non-woven fabric sheet) 12 disposed on the skin side of the filter member 11, and a filter member 11 and a skin-side non-woven fabric sheet 12. The non-skin side nonwoven sheet (second nonwoven sheet) 18 . In plan view, the filter member 11, the skin-side nonwoven fabric sheet 12, and the non-skin-side nonwoven fabric sheet 18 have approximately the same size and approximately the same shape. Similar to the first embodiment, the skin-side nonwoven fabric sheet 12 is a nonwoven fabric sheet including a heat absorbing agent 30 .

Similar to the first embodiment, the filter member 11 may be, for example, a piece of seamless nonwoven fabric in which a piece is integrally formed which is subjected to electret treatment and contains polypropylene fibers (which is a sheet of melt-blown nonwoven fabric that is polyolefin-based fibers); and a sheet of spunbonded nonwoven fabric that has been subjected to electret treatment and contains polypropylene fibers. However, the configuration is not limited thereto. The filter member 11 may not be subjected to electret treatment. For example, a so-called nanofilter that includes a large number of fine gaps (nanoscale voids or pores) and collects virus droplets and the like using the gaps or pores can be used as the filter member 11 .

The non-skin side nonwoven fabric sheet 18 is a nonwoven fabric sheet having a cooling agent 80 . The non-skin side nonwoven fabric sheet 18 needs to be a nonwoven fabric sheet in which the cooling agent 80 can be coated. However, the non-skin side nonwoven fabric sheet 18 is not limited to a spunbond nonwoven fabric sheet. Spunlace nonwoven sheets, breathable nonwoven sheets or needle punched nonwoven sheets can be used. A nonwoven fabric sheet having a good touch is preferable, and a spunbonded nonwoven fabric sheet made of polypropylene fibers or the like can be exemplified.

The mask 3 is a pleated mask, wherein, at the central portion of the mask main body 10 in the up-and-down direction, the filter member 11, the skin-side non-woven fabric sheet 12 and the non-skin-side non-woven fabric sheet 18 are formed at the crease F extending in the left-right direction. Fold into a pleat-like shape to form pleats. The mask main body 10 shown in FIG. 9 has four folds F1 to F4 visible from the non-skin side and four folds F5 to F8 visible from the skin side. The folds F1 , F2 , F7 and F8 are mountain-shaped folds convex upward, and the folds F3 , F4 , F5 and F6 are valley-shaped folds convex downward. However, the number and orientation of the creases F are not limited to the configuration illustrated in FIG. 9 .

In the mask 3 before use, as shown in FIG. 7 etc., the crease-like folded shape is maintained, and the mask main body part 10 is in the state which is almost flat. The pleat-shaped folds F1 to F8 enable the mask main body portion 10 to expand in the up-down direction and bulge toward the non-skin side in an omega-shaped manner. Thus, similar to the mask 1 in the wearing state of the first embodiment shown in FIG. 4 , the wearer of the mask 3 can expand the mask main body 10 in the up and down direction according to the length from the nose to the jaw, so that the mask can be used. The main body portion 10 covers the mouth and nostrils.

Moreover, the upper end part 100X and the lower end part 100Y of the mask main body part 10 each have the folded part 101 which the skin side nonwoven fabric sheet 12 and the non-skin side nonwoven fabric sheet 18 folded toward the non-skin side. It should be noted that in the following description, a portion of the mask main body portion 10 overlapping with the folded portion 101 in the thickness direction will be referred to as a non-turned portion 102 . The folded portion 101 improves the strength of the upper end portion and the lower end portion of the mask main body 10 . Furthermore, the folded portion 101 can suppress the unfolding of the skin-side nonwoven fabric sheet 12 , the non-skin-side nonwoven fabric sheet 18 , and the filter member 11 .

The mask main body portion 10 has a welded portion 14 integrally joining overlapping sheets; for example, the welded portion 14 is formed by thermal welding, ultrasonic welding, or the like. As shown in Figure 7, on both side portions in the lateral direction of the mouth mask main body 10, a plurality of fusion joints joining the filter member 11, the skin side nonwoven sheet 12 and the non-skin side nonwoven sheet 18 are provided along the up and down direction. Section 14. In addition, in the upper end portion and the lower end portion and the central portion in the up-down direction of the mask main body portion 10, a plurality of joining filter members 11, skin side non-woven fabric sheets 12 and non-skin side non-woven fabric sheets 18 are provided along the left-right direction. A welding part 14. However, the pattern of the welded portion 14 is not limited to the pattern shown in FIG. 7 . In addition, it is also possible to join members overlapping each other using an adhesive or the like (for example, a hot-melt adhesive).

In addition, as shown in Figure 9, in the upper end portion of mouth mask main body 10, between the non-skin side non-woven fabric sheet 18 in the turn-back part 101 and the non-skin side non-woven fabric sheet 18 in the non-turn-back part 102, a shape is set. Holding member 15 .

The ear hooks 20 are annular members extending from both sides in the left-right direction of the mask body 10 when the mask 3 is worn. The ear hook 20 is a stretchable member, and for example, a rubber cord, stretchable nonwoven fabric sheet, stretchable film, or the like can be used. Specifically, as shown in Figure 8, a pair of ear hooks 20 of the mouth mask 3 are made of stretchable non-woven fabric sheets, and the openings 21 for hanging the ears are all arranged in the left and right directions and the up and down directions of the corresponding ear hooks. of the central part. In addition, the ear hooks 20 are respectively provided on both sides so as to fit within the planar shape of the mask main body 10 when viewed from the skin face side before the mask 3 is used. The ear hooks 20 are joined to the skin-side surface of the mask main body 10 by joints 16 provided at both ends in the left-right direction. For the ear loop portion 20 of the mask 1 of the first embodiment, the rubber cord is joined to the non-skin side surface of the mask main body portion 10 by the joint portion 16; however, as in the mask 3 of the third embodiment, the ear loop portion 20 A stretchable nonwoven sheet can be bonded to the skin side surface. The joining part 16 extends in the vertical direction and joins the stretchable nonwoven fabric sheet (20) to the mask main body part 10. Before use, in the connection part 22 in the left-right direction center part of the mask main body part 10, a pair of ear hook parts 20 are continuous with each other on the skin surface side. When wearing the mask, the wearer breaks the connecting portion 22 so that the mask 3 can be worn by hanging the ear hook portion 20 around both ears of the wearer. It should be noted that welding or bonding with an adhesive may be used as the bonding means with the bonding portion 16 .

(the mask 3 with heat-absorbing agent 30 and cooling agent 80)

In the mask 3 of the present embodiment, the skin side nonwoven fabric sheet 12 including the heat absorbing agent 30 and the non-skin side nonwoven fabric sheet 18 including the cooling agent 80 are adjacent to each other in the thickness direction. The non-skin side nonwoven fabric sheet 18 is provided facing the non-skin surface side of the skin side nonwoven fabric sheet 12 . Similar to the first embodiment, the endothermic agent 30 is an agent that reacts with water to cause an endothermic reaction, and the cooling agent 80 is an agent that imparts a cool or cool feeling to the wearer when in contact with the wearer's skin.

The skin-side non-woven sheet 12 is a non-woven sheet provided with a heat-absorbing agent 30 on its skin side, and the non-skin-side non-woven sheet 18 is a non-woven sheet provided with a cooling agent 80 on its non-skin side. layer. In the skin-side non-woven fabric sheet 12, in order to easily retain moisture contained in the wearer's breath and to make the heat-absorbing agent 30 in the skin-side non-woven fabric sheet 12 more easily contact with moisture, thereby making the contact time longer, Preferably, the skin-side nonwoven fabric sheet 12 contains hydrophilic fibers, and more preferably, the skin-side nonwoven fabric sheet 12 contains 50% or more of hydrophilic fibers. This makes it easier for the endothermic agent 30 provided in the hydrophilic nonwoven fabric sheet to cause an endothermic reaction.

Examples of hydrophilic fibers include regenerated cellulose fibers such as rayon, natural cellulose fibers such as cotton or ground pulp, semi-synthetic cellulose fibers such as acetate, and the like. In addition, it is also possible to modify hydrophobic fibers (for example, polyethylene fibers, polypropylene fibers, etc.) of fiber.

The mask 3 contains a heat absorbing agent 30 whereby the wearer's moist breath comes into contact with the heat absorbing agent 30 . Due to the endothermic reaction, the surface temperature of the mask 3 is lowered, which makes it possible to improve stuffiness inside the mask 3 .

However, there are cases where it takes a predetermined time until the endothermic agent 30 causes an endothermic reaction and the surface temperature of the mask 3 decreases after moisture in the wearer's breath comes into contact with the heat-absorbing agent 30 . Therefore, during the period from when the wearer starts wearing the mask 3 until the surface temperature of the mask 3 decreases due to an endothermic reaction, there is a risk that the wearer may feel stuffy due to wearing the mask 3 .

In this regard, the mask 3 includes not only the skin-side non-woven fabric sheet 12 containing the heat absorbing agent 30 but also the non-skin-side non-woven fabric sheet 18 containing the cooling agent 80 . The cooling agent 80 in the non-skin side nonwoven fabric sheet 18 can give the wearer a cooling sensation by contacting the wearer's skin. Thus, when wearing the mask 3, the wearer can feel the coolness due to the cooling agent 80 in the following manner: the outer peripheral end of the mask 3 is in direct contact with the wearer's skin, and the cooling agent 80 is in contact with the wearer's skin. Skin contact; or when the cooling agent 80 is a volatile substance, the volatilized cooling agent 80 contacts the wearer's skin. As shown in Figure 9, in mouth mask 3, volatilized cooling agent 80 passes through the skin side nonwoven fabric sheet 12 that is arranged on the skin surface side relative to non-skin side nonwoven fabric sheet 18 and reaches the wearer's skin, The wearer can feel the effect of the cooling agent 80 .

That is to say, when wearing the mouth mask 3, due to the cooling agent 80 in the non-skin side non-woven fabric sheet 18, the wearer can feel the cooling or refreshing feeling at first. Thereafter, due to the endothermic reaction of the endothermic agent 30, the wearer can feel the surface temperature of the mask 3 decrease. This makes the wearer feel the coldness when putting on the mask 3 . In addition, this makes it possible to improve stuffy heat caused by wearing the mask 3, relieve dyspnea, and suppress heatstroke of the wearer. In addition, the wearer can feel the cooling effect of the cooling agent 80 immediately after starting to wear the mask 3, and can feel the cooling effect of the heat absorbing agent 30 after a predetermined time elapses. Thus, compared with masks that only contain the heat-absorbing agent 30 or only the cooling agent 80, the mask 3 can obtain a cooling effect for a longer period of time after the mask 3 is first worn.

Preferably, the cooling agent 80 contains a cooling component that does not absorb heat but stimulates cooling receptors (temperature-sensitive TRP channels) in the wearer's skin, thereby causing the wearer to perceive a cooling sensation. The cooling agent 80 may contain a solvent component that dissolves or disperses the cooling component as needed. Examples of the cooling agent 80 (cooling component) include menthol (for example, L-menthol), menthol derivatives (for example, menthyl lactate, mint glyceryl ether, etc.), methyl salicylate, derived from such as peppermint or essential oils of plants such as eucalyptus. Using the cooling agent 80 that stimulates cold receptors makes it easier for the wearer to feel the cooling sensation. It should be noted that, as the cooling agent 80, a substance that enables the wearer to perceive the cooling feeling due to the cooling agent 80 earlier than the time when the surface temperature of the mask 3 decreases due to the endothermic reaction of the endothermic agent 30 is preferably used. .

In addition, in the case of using a non-woven fabric sheet that has undergone dielectric polarization as the filter member 11 and thus the filter member 11 has a collection function due to electric charges, in order to prevent the collection function of the filter member 11 from being reduced due to the adhesion of alcohol, It is preferable that the heat absorbing agent 30 and the cooling agent 80 do not contain alcohol. For example, the solvent contained in the heat absorbing agent 30 and the cooling agent 80 is preferably an aqueous solvent. Furthermore, for example, in the case of applying a solution obtained by dissolving and dispersing an endothermic component in an alcohol-based solvent to the skin-side nonwoven fabric sheet 12 and the non-skin-side nonwoven fabric sheet 18, preferably, In the production line of the mask 3 , the alcohol-based solvent is vaporized, and then the skin-side nonwoven fabric sheet 12 and the non-skin-side nonwoven fabric sheet 18 are joined to the filter member 11 .

In addition, preferably, the heat absorbing agent 30 is a non-volatile substance, and the cooling agent 80 is a volatile substance. Since the cooling agent 80 is volatile, the cooling agent 80 volatilizes immediately after using the mask 3, and it is easier to give a cooling or refreshing feeling to the wearer's skin. On the other hand, since the heat-absorbing agent 30 is non-volatile, the heat-absorbing agent 30 does not volatilize before the mask 3 is used, and the risk of deterioration of the effect of the heat-absorbing agent 30 can be reduced. In addition, the time when the cooling agent 80 exhibits the cooling effect and the time when the heat-absorbing agent 30 exhibits the cooling effect can be staggered, so that the wearer can feel the cooling effect for a long time after putting on the mask 3 . It should be noted that the volatile cooling agent 80 is a substance that becomes a gas in a normal living environment and has a boiling point of 100° C. or lower.

Cooling agent 80 can be liquid or solid (also includes gel, powder, etc.). The non-skin side non-woven fabric sheet 18 of the mask 3 is provided with microcapsules containing the cooling agent 80 in liquid form. In these microcapsules, the membrane material is ruptured (damaged) by external physical stimulation (such as pressure (impact, friction, etc.)), and the cooling agent 80 in each microcapsule is exposed or released. The film material of the microcapsules containing the cooling agent 80 of the mask 3 is made of polyurethane resin. The microcapsules in which the cooling agent 80 is contained in the film material of the closed microcapsules are also referred to as "cooling agent 80". It should be noted that the cooling agent 80 may not be contained in the microcapsule. The cooling agent 80 in liquid form or solid form may be directly applied to the nonwoven fabric sheet or dispersed in the nonwoven fabric sheet as the non-skin side nonwoven fabric sheet 18 .

Furthermore, similarly to the first embodiment, the skin-side nonwoven fabric sheet 12 of the mask 3 is provided with microcapsules containing the heat absorbing agent 30 in liquid form. In the microcapsule, the film material is broken (broken) due to a physical stimulus from the outside such as pressure (shock, friction, etc.), and the heat-absorbing agent 30 in the microcapsule is exposed or released. The film material of the microcapsules containing the heat-absorbing agent 30 of the mask 3 is made of polyurethane resin. The microcapsules in the state where the endothermic agent 30 is contained in the film material of the closed microcapsules are also referred to as "endothermic agent 30". It should be noted that the heat absorbing agent 30 may not be contained in the microcapsules. The heat absorbing agent 30 in liquid form or solid form may be directly applied to the nonwoven fabric sheet or dispersed in the nonwoven fabric sheet as the skin-side nonwoven fabric sheet 12 .

The heat-absorbing agent 30 and the cooling-sensing agent 80 used in the mask 3 are respectively contained in microcapsules in which the film material is made of polyurethane resin, but the configuration is not limited thereto. Any microcapsules having a predetermined strength to rupture (shock or friction) by pressure (physical stimulus) from the outside will suffice. Other examples of materials include gelatin, gelatin/gum arabic, melamine resin, urea/formalin resin. These resins may be used alone or in combination of two or more types of resins. In addition, as the microcapsules, microcapsules in which the heat absorbing agent 30 and the cooling agent 80 are released by breaking the film material by physical or chemical stimulation (eg, heat, light, or liquid) can be used. By encapsulating the heat-absorbing agent 30 and the cold-sensing agent 80 in microcapsules, the heat-absorbing agent 30 and the cooling agent 80 are more likely to stay in the non-woven fabric sheet 12 on the skin side and the non-woven fabric sheet 18 on the non-skin side. between the fibers of the spun sheet.

By encapsulating the heat-absorbing agent 30 and the cold-sensing agent 80 in microcapsules as in this embodiment, it is possible to reduce the amount of heat-absorbing agent 30 and cooling agent 80 in liquid form or solid form directly applied before wearing the mask 3. The risk of slipping from the mask 3 or volatile substances such as the cooling agent 80 volatilizing and disappearing. Preferably, when wearing the mask 3, the wearer first taps the entire area of the mask main body 10. When a predetermined physical stimulus (pressure) is applied by tapping, the microcapsules of the skin-side non-woven fabric sheet 12 and the non-skin-side non-woven fabric sheet 18 are damaged (ruptured), which makes the heat-absorbing agent 30 contained in the microcapsules and the cooling sensation Agent 80 is exposed to the outside. The wearer who wears the mask 3 in the state where the heat-absorbing agent 30 and the cooling agent 80 are exposed can easily obtain the effects of the heat-absorbing agent 30 and the cooling agent 80 . In addition, the heat-absorbing agent 30 and the cold-sensing agent 80 are contained in the film material of the microcapsules made of the same material, which makes it possible to use the wearer's single action of tapping the mask 3 before use, and make the heat-absorbing agent 30 and cooling agent 80 exposed, it is easier to exert its effect.

In addition, the cooling agent 80 can be provided in the non-skin side nonwoven fabric sheet 18 by the same method as the heat absorbing agent 30 is provided in the skin side nonwoven fabric sheet 12 . For example, the cooling agent 80 has preferably been mixed into at least a part of the fibers constituting the non-skin side nonwoven fabric sheet 18 . That is to say, in order to set the cooling agent 80 before forming the non-skin side nonwoven fabric sheet 18, it is recommended, for example, to impregnate the fiber web to be formed with the non-skin side nonwoven fabric sheet 18 with the cooling agent 80 (solution), or mix The resin with cooling agent 80 forms fibers. In addition, an adhesive mixed with the cooling agent 80 may be applied to the fiber web. This makes it difficult for the cooling agent 80 to detach from the non-skin side non-woven fabric sheet 18 , and enables the function of the cooling agent 80 to be gradually exerted, thereby improving the continuity of the cooling effect of the cooling agent 80 .

The configuration is not limited to this. The cooling agent 80 may be provided on the surface of the fibers constituting the non-skin side nonwoven fabric sheet 18 . For example, the cooling agent 80 can be applied to the non-skin side nonwoven fabric sheet 18 by various well-known application methods such as spraying, rolling, or brushing. In addition, the non-skin side nonwoven fabric sheet 18 may be immersed in the cooling agent 80 (solution).

The heat absorbing agent 30 may be provided on the entire skin-side nonwoven fabric sheet 12 , or may be provided in a part of the plane of the skin-side nonwoven fabric sheet 12 . In addition, the heat absorbing agent 30 may be provided at a uniform basis weight (amount per unit area: g/m ² ) throughout the skin-side non-woven fabric sheet 12, or may be provided in an amount according to an area in the skin-side non-woven fabric sheet 12. Different basis weight settings.

The cooling agent 80 may be provided in the entire non-skin side nonwoven fabric sheet 18 , or may be provided in a part of the plane of the non-skin side nonwoven fabric sheet 18 . In addition, the cooling agent 80 may be provided at a uniform basis weight (amount per unit area: g/m ² ) throughout the non-skin-side nonwoven fabric sheet 18, or may be distributed according to the area in the skin-side nonwoven fabric sheet 12. with different basis weight settings.

Furthermore, preferably, the skin-side non-woven fabric sheet 12 provided with the heat-absorbing agent 30 forms the most skin-side surface of the mask 3 . Specifically, similar to the mask main body 10 of the mask 3 shown in Figure 9, the following configuration is preferred: the skin side non-woven fabric sheet 12 is arranged on the surface closest to the skin; the filter member 11 is arranged on the most non-skin side and the non-skin side nonwoven fabric sheet 18 is provided between the skin side nonwoven fabric sheet 12 and the filter member 11.

As described above, the heat-absorbing agent 30 causes an endothermic reaction due to contact with the wearer's moist breath, and the surface temperature of the mask decreases. By arranging the skin-side non-woven fabric sheet 12 with the heat-absorbing agent 30 on the most skin side of the mask main body 10, the heat-absorbing agent 30 is more easily contacted with the breath of the wearer, and the cooling effect is improved. In addition, since an endothermic reaction can be caused at a position close to the wearer's skin, the reduction in the surface temperature of the mask 3 makes it easier for the wearer to feel a cold sensation.

In addition, the non-skin side non-woven fabric sheet 18 is disposed between the filter member 11 and the skin-side non-woven fabric sheet 12, so the non-skin side non-woven fabric sheet 18 is configured to be sandwiched between the filter member 11 and the skin-side non-woven fabric sheet. Between 12. When the cooling agent 80 is provided in the non-skin side non-woven fabric sheet 18 in a state contained in microcapsules, the microcapsules are not easy to detach from the non-skin side non-woven fabric sheet 18, and the cooling effect of the cooling agent 80 can be reduced. risk of deterioration. In addition, when the cooling agent 80 is not contained in the microcapsules but is liquid and applied to the non-skin side nonwoven fabric sheet 18, the non-skin side nonwoven fabric sheet 12 is covered with the filter member 11 and the skin side nonwoven fabric sheet 18. The two surfaces of the cloth sheet 18 can reduce volatilization of the cooling agent 80 and reduce the risk of deterioration of the effect of the cooling agent 80 .

In addition, preferably, the non-skin side surface of filter member 11 forms at least a part of the non-skin side surface of mask body portion 10 (mask 3), and the skin side surface of skin side nonwoven sheet 12 forms mask body portion 10 (mask 3). ) at least a portion of the skin side surface. In this case, even in the mask 3 including the filter member 11, the number of sheets laminated in the thickness direction in the mask main body 10 can be reduced, which can make the inner space of the mask 3 less stuffy. Further, more preferably, the heat absorbing agent 30 is provided in a portion forming at least a part of the skin-side surface of the mask main body portion 10 (mask 3 ). The heat-absorbing agent 30 provided at a position close to the wearer's skin easily causes an endothermic reaction at a position close to the wearer's skin, so that the wearer more easily feels a cooling sensation due to the endothermic reaction.

However, the structure of the mask main body 10 is not limited thereto. For example, another sheet can be arranged on the non-skin side relative to the filter member 11, or another sheet can be arranged on the skin side relative to the skin side nonwoven sheet 12, or an additional sheet can be arranged between the filter member 11 and the skin side nonwoven sheet 12. Set other slices in between. In addition, the lamination order of the filter member 11, the skin side nonwoven fabric sheet 12, and the non-skin side nonwoven fabric sheet 18 may be changed.

More preferably, the heat absorbing agent 30 is applied to the skin-side surface of the skin-side nonwoven fabric sheet 12 . The heat-absorbing agent 30 is arranged at a position close to the wearer's skin, so that the heat-absorbing agent 30 is more likely to be in contact with the wearer's breath, thereby promoting the heat-absorbing reaction and improving the cooling effect. In addition, an endothermic reaction easily occurs at a position close to the wearer's skin, which makes it easier for the wearer to feel the decrease in the surface temperature of the mask 3 . Similarly, preferably, the cooling agent 80 is applied to the skin-side surface of the non-skin-side nonwoven fabric sheet 18 . The cooling agent 80 is arranged on the side close to the wearer's skin, so that the cooling agent 80 is more likely to contact the wearer's skin, and the wearer can feel the cooling effect of the cooling agent 80 more easily. However, the configuration is not limited to this. The heat absorbing agent 30 may be applied to the non-skin side surface or both surfaces of the skin side nonwoven fabric sheet 12 . The cooling agent 80 may be applied to the non-skin side surface or both surfaces of the non-skin side nonwoven fabric sheet 18 .

In addition, in the case that the other side surface of the skin side nonwoven fabric sheet 12 is smoother (lower surface roughness) than one side surface, it is more preferable that the following configuration is arranged: one side surface is arranged on the non-skin side, and the other side surface Configured on the skin side; the other side surface is set to form at least a part of the skin side surface of the mouth mask main body 10; at least a part of the skin side surface of the mask main body 10). That is to say, the following configurations are preferable: in the skin-side nonwoven fabric sheet 12, the skin-side surface is smoother than the non-skin-side surface; the smoother surface is arranged at a position capable of contacting the wearer's skin; The agent 30 is provided on a smoother surface capable of contacting the wearer's skin. In general, a surface with high smoothness (the other side surface) will have a larger contact area with the wearer's skin than a surface with low smoothness (one side surface). Therefore, the contact area of the smoother skin side surface and the wearer's skin can be greater than the contact area of the non-skin side surface and the wearer's skin, which enables the mask 3 to make the heat absorbing agent 30 arranged on the skin side surface contact the wearer. The skin has a larger contact area. Therefore, due to the heat absorbing agent 30, the wearer feels a cold feeling more easily.

As an index for comparing the smoothness of the nonwoven fabric sheet 12, examples thereof may include the height of protrusions and depressions on the surface, the standard deviation (SMD) of the surface roughness of KES, and the mean deviation (MMD) of the average coefficient of friction. .

Specifically, the heights of the protrusions and depressions in the cross section of the nonwoven fabric sheet 12 can be measured with an electron microscope. When the height of the protrusions and depressions on the other side surface (skin side surface) of the nonwoven fabric sheet 12 is lower than the height of one side surface (non-skin side surface) of the nonwoven fabric sheet 12, the nonwoven fabric sheet The surface on the other side (surface on the skin side) of 12 is smoother than the surface on one side (surface on the non-skin side) of the nonwoven fabric sheet 12 .

The mean deviation (SMD) of the surface roughness and the mean deviation (MMD) of the surface friction coefficient can be based on the characteristic values of KES manufactured by Kato-tec Corporation (Reference: Standardization and Analysis of Hand Feel Evaluation (Second Edition), by Kawabata Ji Xiong, issued on July 10, 1980) to measure, this is generally referred to as the characteristic value representing the surface feel of the nonwoven fabric sheet 12.

Specifically, the surface characteristics were measured by using a surface testing device (KES-FB4-AUTO-A manufactured by Kato-Tec Corporation) by taking a sample of 1.0 x 1.0 cm as a sample and arranging the sample on a test stand of a smooth metal plane . The measurement of the surface roughness was performed by applying a load of 10 gf to the front surface (or the rear surface) and pressing a 0.5 cm wide contact terminal wound by a piano wire having a diameter of 0.5 mm onto the sample. The measurement of surface friction was performed by placing the same ten piano wires as the contact terminals used to measure the surface roughness and pressing the contact surface onto the test specimen with a force of 50 fg from a weight. In the measurement of surface roughness and surface friction, the sample was moved horizontally for 2 cm at a constant speed of 0.1 cm/sec, and a uniaxial tension of 20 gf/cm was applied to the sample. From the measurement results, the mean deviation (SMD) of the surface roughness and the mean deviation (MMD) of the surface friction coefficient were obtained.

Preferably, the air resistance value of the skin side nonwoven fabric sheet 12 is higher than the air permeability resistance value of the non-skin side nonwoven fabric sheet 18 (the air permeability resistance value of the skin side nonwoven fabric sheet 12>the air permeability resistance value of the non-skin side nonwoven fabric sheet 18 Air resistance value). During wearing the mask 3, this makes it easier for more of the wearer's breath (exhaled air) to remain in the skin-side non-woven sheet 12 with a higher air resistance value, so it is easier for the heat-absorbing agent 30 and the wearer to Cause endothermic reaction and reduce the surface temperature of mouth mask 3 between breath. It should be noted that each of the air-flow resistance value of the skin-side nonwoven fabric sheet 12 and the air-air resistance value of the non-skin-side nonwoven fabric sheet 18 can be measured by a known method. For example, a method for measuring the air permeability resistance value of the filter member 11 can be used.

Furthermore, preferably, the air permeability resistance value of the filter member 11 is higher than that of the skin-side nonwoven fabric sheet 12 . That is to say, more preferably, the air permeability resistance value of filter member 11 is higher than the air permeability resistance value of skin side nonwoven fabric sheet 12, and the air permeability resistance value of skin side nonwoven fabric sheet 12 is higher than non-skin side nonwoven fabric sheet. The air resistance value of 18 (the air resistance value of the filter member 11>the air resistance value of the non-woven fabric sheet 12 on the skin side>the air resistance value of the non-woven fabric sheet 18 on the non-skin side). This makes it easier to promote the heat-absorbing reaction of the heat-absorbing agent 30 with the wearer's breath moderately left in the skin-side non-woven fabric sheet 12 while maintaining the collection of air droplets such as virus droplets, bacterial droplets, and pollen in the filter member 11. The effect of fine particles and so on. This makes it possible to enhance the heat absorption effect and its persistence. In addition, since the risk of the cooling agent 80 flowing out (volatilizing) to the outside through the filter member 11 can be reduced, the cooling effect and its persistence can be improved.

In addition, in the mask 3, the filter member 11, the skin side nonwoven fabric sheet 12, and the non-skin side nonwoven fabric sheet 18 are folded in a pleated shape in the vertically central portion of the mask main body 10. When the mask 3 is worn, the folds are spread in the vertical direction at the central part of the mask main body 10 in the left-right direction. However, at both sides of the left-right direction of the mask main body 10, the filter member 11, the skin-side non-woven fabric sheet 12 and the non-skin-side non-woven fabric sheet 18 are joined by the welded portion 14 in a state of being folded into a pleat-like shape. . In addition, throughout the entire area in the left-right direction of the mask main body part 10, in the upper end part 100X and the lower end part 100Y, the filter member 11, the skin side nonwoven fabric sheet 12 and the non-skin side nonwoven fabric sheet 18 pass in a folded state. The welded portion 14 is joined.

That is, in both side parts of the left-right direction of the mask main body part 10, the state of the cross section shown in FIG. 9 is maintained even when the mask 3 is worn. Specifically, in the upper end portion 100X and the lower end portion 100Y of the mouth mask 3, the skin side non-woven fabric sheet 12 has a two-layer structure overlapping in the thickness direction due to the folded portion 101, and the non-skin side non-woven fabric sheet 18 is also due to the folded back portion. The portion 101 has a two-layer structure overlapping in the thickness direction. In the center portion in the vertical direction, there are portions where the skin-side nonwoven fabric sheet 12 and the non-skin-side nonwoven fabric sheet 18 each have a three-layer structure overlapping in the thickness direction due to wrinkles.

It should be noted that, as the mask 3, in the case where the mask main body 10 has an up and down folded portion 101, the "upper end 100X" of the mask main body 10 is the upper folded portion 101, and the "lower end 100Y" is the lower folded portion 101, " The central portion 100Z″ is a portion that does not have the folded portion 101 and is located between the upper end portion 100X and the lower end portion 100Y in the vertical direction. In the case of a mask that does not have a turn-back portion 101 different from a mask 3, when the length of the upper half of the mask main body 10 in the up-down direction is quartered, the uppermost part (with a quarter length and located at The part on the upper side of the upper half) is the "upper end". When the length of the lower half of the mask main body 10 in the up-down direction is quartered, the lowermost part (the part that has a quarter length and is positioned on the lower side of the lower half) is the "lower end". The part located between the upper end part and the lower end part in the up-down direction is a "central part." In addition, in the left-right direction of the mask main body 10, when the length of one side (left side) of the mask main body 10 in the left-right direction is quartered, the most side part (in the left half) The portion with the quarter length on the left side) is the "side" of one side. When the length of the other side (right side) of the mouth mask main body 10 in the left-right direction was quartered, the most on the other side (with a quarter length on the right side of the right half) part) is the "side" of the other side. The part between the two side parts is called "central part".

In addition, in the mask 3 having such a wrinkle-shaped fold F, when the fold F is formed after the heat-absorbing agent 30 is uniformly provided on the entire area of the skin-side nonwoven fabric sheet 12 during the formation of the mask main body 10 , so that the basis weight (g/m ² ) of the heat absorbing agent 30 in the skin-side non-woven fabric sheet 12 is as follows: The basis weight of the vertical center part 100Z of the skin side nonwoven fabric sheet 12 which has a three-layered structure is high. Therefore, the central portion 100Z has a portion where the basis weight of the heat absorbing agent 30 is higher than those in the upper end portion 100X and the lower end portion 100Y. Specifically, as shown in FIG. 9 , the part H in which the skin side non-woven fabric sheet 12 in the mask main body 10 before use has a three-layer overlapping structure becomes the basis weight of the heat absorbing agent 30 higher than the upper end portion 100X and the lower end portion 100Y. part of the basis weight in .

With respect to the up-down direction of the whole mask main body part 10, the cooling effect of the central part 100Z can be improved compared with the upper end part 100X and the lower end part 100Y. In addition, when the mask 3 is worn, in the left-right direction central portion of the mask main body 10, the folded portion can be expanded in the up-down direction, but not fully expanded, and the skin-side non-woven fabric sheet 12 has a partially three-layer overlapping structure. . This makes it possible to secure the portion H where the basis weight of the endothermic agent 30 is high. In addition, when wearing the mask 3, the upper and lower central part 100Z of the mask main body 10 is close to the wearer's nostril or mouth, which makes it easier for the wearer's breath to contact with more heat-absorbing agents 30, and it is easier to feel the breath of the wearer. The cooling effect of thermal agent 30. Therefore, by increasing the basis weight of the heat absorbing agent 30 in these portions, it is made easier for the wearer to obtain the cooling effect of the heat absorbing agent 30 .

In addition, in the case where the cooling agent 80 is uniformly provided in the entire area of the non-skin side nonwoven fabric sheet 18 and forms the wrinkle-shaped crease F, the base of the cooling agent 80 in the non-skin side nonwoven fabric sheet 18 The weight (g/m ² ) is as follows: Compared with the upper end portion 100X and the lower end portion 100Y of the non-skin side nonwoven fabric sheet 18 having a two-layer overlapping structure, the non-skin side nonwoven fabric sheet 18 has a three-layer overlapping structure. The basis weight in the direction central portion 100Z is high. Therefore, the central portion 100Z has a portion in which the basis weight of the cooling agent 80 is higher than that in the upper end portion 100X and the lower end portion 100Y. Specifically, as shown in FIG. 9 , the non-skin side non-woven fabric sheet 18 in the mask main body 10 before use has a part H of a three-layer overlapping structure, and the basis weight of the cooling agent 80 is higher than that of the upper end portion 100X and the lower end portion. Part of the basis weight in 100Y. In addition, when wearing the mask 3, in the left-right direction central portion of the mask main body 10, the folded portion can be expanded in the up-down direction, but not fully expanded, and the non-skin side non-woven fabric sheet 18 has a partially three-layer overlapping structure. This ensures the portion H in which the cooling agent 80 has a high basis weight.

The cooling effect of the central portion 100Z can be further enhanced by providing a portion in the central portion 100Z having a higher basis weight of the cooling agent 80 and the heat absorbing agent 30 than in the upper end portion 100X and the lower end portion 100Y. In the central portion 100Z near the nostrils or the mouth, the wearer easily feels the effect of the cooling agent 80 and the cooling effect of the mask 3 .

In addition, in order to make more heat-absorbing agent 30 come into contact with the wearer's breath near the wearer's nostrils or mouth in the up-and-down direction center portion 100Z (instead of the upper end portion 100X and lower end portion 100Y), and in order to more easily cause heat absorption To reflect and improve the cooling effect, preferably, in the mask 3 having such a wrinkle-shaped crease F, the upper and lower central portion 100Z of the skin-side non-woven fabric sheet 12 has a basis weight of the heat-absorbing agent 30 higher than that of the upper end portion 100X. and the portion of the basis weight in the lower end portion 100Y. For example, in the skin-side nonwoven fabric sheet 12 , a configuration in which the heat absorbing agent 30 is provided in the center portion 100Z and the heat absorbing agent 30 is not provided in the upper end portion 100X and the lower end portion 100Y is acceptable. This makes the basis weight of the heat absorbing agent 30 higher in the central portion 100Z of the skin-side nonwoven fabric sheet 12 than in the upper end portion 100X and the lower end portion 100Y. In addition, the portion where the skin-side nonwoven fabric sheet 12 has a triple-layered structure due to the plurality of folds F becomes a portion where the heat absorbing agent 30 has a basis weight higher than that of the skin-side nonwoven fabric sheet 12 by The one-layer structure part or the skin-side nonwoven fabric sheet 12 has a two-layer structure part.

As mentioned above, on both sides of the left and right direction of the mask main body 10 of the mask 3 having the creases F, due to the welded part 14, when the mask 3 is worn, there is a gap between the skin side non-woven fabric sheet 12 in the thickness. A two-layer structure overlapping in the direction; at the upper end 100X and the lower end 100Y of the mask 3, due to the folded part 101, when the mask 3 is worn, there is a two-layer structure in which the skin side non-woven fabric sheet 12 overlaps in the thickness direction; Furthermore, in the vertical center portion 100Z, there is a three-layer structure in which the skin-side nonwoven fabric sheet 12 overlaps in the thickness direction due to wrinkles ( FIG. 9 ). Thus, when the heat-absorbing agent 30 is evenly arranged in the entire area of the skin-side non-woven fabric sheet 12 and the crease F is formed, the two sides of the mask main body 10 become the basis weight of the heat-absorbing agent 30. (g/m ² ) is higher than that in the upper end portion 100X and the lower end portion 100Y of the skin side nonwoven fabric sheet 12 having a two-layered structure in the vertical central portion 100Z having a three-layered structure. part (Figure 9).

When the mask 3 is worn, the two sides in the left and right directions of the mask main body 10 are parts that contact or approach the wearer's cheeks. The basis weight of the heat absorbing agent 30 in the central portion 100Z near the wearer's nostrils or mouth is set higher than that of the heat absorbing agents in the upper end portion 100X and the lower end portion 100Y in the portion in contact with or close to the wearer's cheek. In the case of a basis weight of 30, the wearer tends to feel the coolness of the mask in the nostrils or the central part 100Z of the mouth near the wearer's cheeks. In particular, the ear hook portions 20 are joined to both side portions of the mask main body portion 10 in the left-right direction. This makes the two side portions of the left and right directions of the mask main body 10 easy to be in close contact with the wearer's skin (cheek) due to the stretching force of the earhook part 20, so that the wearer can feel the coldness of the heat absorbing agent 30 more easily. Effect.

Similarly, in the case where the cooling agent 80 is uniformly provided in the entire area of the non-skin side nonwoven fabric sheet 18 and forms the crease F, the upper end portion having a two-layer overlapping structure with the non-skin side nonwoven fabric sheet 18 100X is compared with the lower end portion 100Y, and the basis weight (g/m ² ) of the cooling agent 80 on both sides in the left-right direction of the mask main body 10 is at the top and bottom of the non-skin side non-woven fabric sheet 18 having a three-layer overlapping structure. The direction central part 100Z is medium high. That is to say, the part H where the non-skin side non-woven fabric sheet 18 in the mask main body 10 before use has a three-layer overlapping structure becomes the basis weight of the cooling agent 80 higher than that in the upper end part 100X and the lower end part 100Y. The heavy part (Figure 9).

In the central part 100Z of both sides of the left-right direction of the mask main body part 10, by setting the heat-absorbing agent 30 and the part where the basis weight of the heat-absorbing agent 30 is higher than the basis weight in the upper end part 100X and the lower end part 100Y, so that In the central part 100Z near the nostrils or the mouth in the part that contacts or is close to the wearer's cheek, it is easier to obtain not only the cooling effect of the heat absorbing agent 30 but also the cooling effect of the cooling agent 80, thereby making it easier It is easy to feel the cooling effect of mask 3.

In addition, both ends in the left and right directions of the mask main body 10 are parts that are in contact with the wearer's cheeks and close to the wearer's skin, whereby the wearer can easily obtain the cooling effect of the heat absorbing agent 30 . Therefore, by setting the basis weight (g/m 2 ) of the heat-absorbing agent 30 in the two ends of the left-right direction in the mask main body 10 higher than the basis weight (g/m ² ) of the heat-absorbing agent 30 in the center part of the left-right direction ² ), the wearer can easily obtain the cooling effect of the heat absorbing agent 30. It should be noted that as a method of providing both side portions in the left-right direction having a portion in which the heat-absorbing agent 30 has a basis weight higher than that of the center portion in the left-right direction, for example, a larger amount of heat-absorbing agents is provided at both end portions in the left-right direction. A configuration in which a smaller amount of the heat-absorbing agent 30 (or no heat-absorbing agent 30 is provided) is provided at the central portion in the left-right direction than at both end portions is acceptable. In addition, the following configurations are acceptable: the mask 3 includes a filter member 11, a skin-side non-woven fabric sheet 12, and a non-skin-side non-woven fabric sheet 18; side panels (not shown) sandwiched between them from the skin side and the non-skin side; and these side panels are also provided with a heat absorbing agent 30 . Preferably, the side sheet is a sheet with good air permeability or touch, for example, a melt-blown nonwoven sheet, a spunbonded nonwoven sheet, an SMS nonwoven sheet, an air-permeable nonwoven sheet, and the like.

It should be noted that whether or not the heat absorbing agent 30 and the cooling agent 80 are respectively provided to the skin-side nonwoven fabric sheet 12 and the non-skin-side nonwoven fabric sheet 18 can be confirmed using a known method. First, the skin-side non-woven fabric sheet 12 and the non-skin-side non-woven fabric sheet 18 to be measured are separated from the mask 3, and a sample having a predetermined size is prepared. The composition of the sample is analyzed using, for example, a gas chromatography device (7890B manufactured by Agilent Technologies or an equivalent device), which makes it possible to confirm whether the samples of the skin-side non-woven fabric sheet 12 and the non-skin-side non-woven fabric sheet 18 contain the heat-absorbing agent 30 and Cooling agent 80. In the case where the heat-absorbing agent 30 and the cooling agent 80 are contained in the microcapsules, the presence or absence of the microcapsules can be confirmed by observing samples of the skin-side non-woven fabric sheet 12 and the non-skin-side non-woven fabric sheet 18 with an electron microscope. Capsule (endothermic agent 30 and cooling agent 80).

In addition, the basis weight (g/m ² ) of the cooling agent 80 in the non-skin side nonwoven fabric sheet 18 between the upper end portion 100X and the lower end portion 100Y and the central portion 100Z can also be determined by using a gas chromatography device. Comparison, and comparison of the basis weight (g/m ² ) of the heat absorbing agent 30 in the skin-side nonwoven fabric sheet 12 between the upper end portion 100X and the lower end portion 100Y and the central portion 100Z.

(1) First, the skin-side nonwoven fabric sheet 12 to be measured is taken out from the mask 3 and divided into an upper end portion 100X, a lower end portion 100Y, and a central portion 100Z. The separated upper end portion 100X, lower end portion 100Y, and central portion 100Z are further cut into small samples having a predetermined size (for example, 20 mm in the up-down direction×40 mm in the left-right direction).

(2) Next, the microcapsules are dissolved by means such as immersing a finely cut sample in a specific solvent, and a mixture of the endothermic agent 30 (component having a cooling effect) and other components (solvent, etc.) is extracted from the sample.

(3) For each sample, the components of the mixture extracted from the sample were analyzed using a gas chromatograph. In addition, for each sample, the peak of the endothermic agent (component having a cooling effect) and the peaks of other components (solvent, etc.) were acquired, and the ratio of the peak of the endothermic agent to the peak of the other components was calculated (the peak value of the endothermic agent). peak/peak of other components). This ratio is considered to correspond to the amount of endothermic agent located in the sample.

(4) Finally, calculate the average of the ratios of endothermic agents (peak value of endothermic agent/peak value of other components ≈ amount of endothermic agent 30 ) in a plurality of samples respectively constituting the upper end portion 100X, lower end portion 100Y, or central portion 100Z value. This average value is considered to correspond to the basis weight of the heat-absorbing agent 30 in the upper end portion 100X, the basis weight in the lower end portion 100Y, and the basis weight in the center portion 100Z, and can be compared.

In addition, in the case where the heat-absorbing agent 80 is contained in the microcapsule or in the case where the heat-absorbing agent 80 is not contained in the microcapsule, the following method is also acceptable: from the non-skin side nonwoven fabric sheet 18 to be compared Partially cutting out a sample having a predetermined size; removing the heat-absorbing agent 30 from the cut-out sample; calculating the difference in weight before and after removing the heat-absorbing agent 30; poor comparison. For example, in the case where the heat absorbing agent 30 is contained in microcapsules, the comparison can be made as follows: a sample having a predetermined size is cut out from the portion to be compared of the non-skin side nonwoven sheet 18; Subsequently, the microcapsules are dropped with the fluid (water flow or air flow); the weight of each sample in the dry state is measured again; the weight difference before and after the drop of the microcapsules is calculated; Comparison of basis weights of heat absorbers 30 .

It should be noted that in the non-skin side nonwoven fabric sheet 18, the basis weights (g/m ² ) of the cooling agent 80 in the upper end portion 100X and the lower end portion 100Y and in the central portion 100Z are compared in the same manner.

In addition, using the same method, it can also be confirmed that the heat absorbing agent 30 is arranged in the skin side nonwoven fabric sheet 12 of the mask 1 of the first embodiment, and the heat absorbing agent 30 is placed on the upper end of the skin side nonwoven fabric sheet 12. and the basis weight (g/m ² ) in the lower end portion and the central portion.

Preferably, as shown in FIG. 9 , in the folded portion 101, the length 18X (18Y) of the non-skin side non-woven fabric sheet 18 in the vertical direction is smaller than the vertical length 12X (12Y) of the skin side non-woven fabric sheet 12 (18X< 12X and 18Y<12Y). Since in the folded part 101, the skin side nonwoven fabric sheet 12 covers the non-skin side nonwoven fabric sheet 18 from the non-skin side side, the skin side nonwoven fabric sheet 12 covers the non-skin side nonwoven fabric sheet 18 from both surfaces in the thickness direction. The cloth sheet 18, therefore, can reduce the risk of the microcapsules containing the cooling agent 80 falling or breaking before using the mask 3 when the cooling agent 80 is included in the microcapsules as in the mask 3. In addition, in the case where the volatile cooling agent 80 is not contained in the microcapsule and is provided in the non-skin side nonwoven fabric sheet 18 in liquid form or solid form, the cooling agent 80 is covered with the skin side nonwoven fabric sheet 12 This makes it possible to reduce the risk of volatilization of the cooling agent 80 in the non-skin side nonwoven fabric sheet 18 .

However, the configuration is not limited to this. For example, the following configurations are acceptable: the upper and lower ends of the mask main body 10 are turned back toward the skin side; or only one of the upper and lower ends of the mask main body 10 is turned back toward the non-skin side. In addition, the heat absorbing agent 30 may not be provided on the non-skin side surface of the upper turned-back portion 101 .

In addition, in the mask 3 of the present embodiment, the turned-back portion 101 is formed by turning back the upper and lower ends of the skin-side non-woven fabric sheet 12 and the non-skin-side non-woven fabric sheet 18 toward the non-skin side, but the structure is not limited to this. At least one of the skin-side nonwoven fabric sheet 12 and the non-skin-side nonwoven fabric sheet 18 may be folded toward the non-skin side. For example, a configuration is acceptable in which only the skin-side nonwoven fabric sheet 12 is folded back toward the non-skin side, and the heat absorbing agent 30 is provided on the skin-side surface 102A (skin side) of the non-folded portion 102 overlapping the folded portion 101 in the thickness direction. the skin-side surface of the non-woven fabric sheet 12), and the non-skin-side non-woven fabric sheet 18 is not turned back toward the non-skin side. In addition, the filter member 11 may be folded in addition to the skin side nonwoven fabric sheet 12 and the non-skin side nonwoven fabric sheet 18 . In addition, the folded portion 101 is not limited to the portion folded from the skin surface side to the non-skin surface side, and may be a portion folded from the non-skin surface side to the skin surface side. A configuration is acceptable in which neither the skin-side nonwoven fabric sheet 12 nor the non-skin-side nonwoven fabric sheet 18 is folded toward the non-skin side or toward the skin side. Similarly, in the mask 1 of the first embodiment, the turned-back portion 101 can be formed by turning back only the skin-side nonwoven fabric sheet 12 toward the non-skin side without turning the filter member 11 back toward the non-skin side. Folding back only the skin-side nonwoven fabric sheet 12 makes it possible to reduce the risk of the upper and lower ends of the mask main body 10 becoming too rigid while preventing the filter member 11 from directly contacting the wearer's skin.

As shown in FIG. 7 and the like, preferably, the mask 3 has a shape maintaining member 15 . The shape maintaining member 15 makes it difficult to generate a gap between the mask 3 and the wearer (face), and improves the airtightness of the internal space of the mask 3 . Thereby, the heat-absorbing agent 30 and the cooling agent 80 are more likely to stay in the inner space of the mask 3, which makes it possible to improve the cooling effect of the heat-absorbing agent 30 and the cooling agent 80. In addition, the contact time between the heat absorbing agent 30 and the wearer's breath and air circulation is increased, and the cooling effect and its duration are improved. However, the configuration is not limited thereto, and the mask 3 may not have the shape maintaining member 15 .

Moreover, in the mask main body part 10, it is preferable that the outer peripheral end of the filter member 11 and the outer peripheral end of the skin side nonwoven fabric sheet 12 and the non-skin side nonwoven fabric sheet 18 coincide with each other. In the mouth mask 3 of present embodiment, as shown in Figure 7 etc., the left end 11c of filter member 11, the left end 12c of skin side nonwoven sheet 12 and the left end 18c of non-skin side nonwoven sheet 18 are consistent with each other, filter member The right end 11d of 11, the right end 12d of the skin-side nonwoven fabric sheet 12, and the right end 18d of the non-skin-side nonwoven fabric sheet 18 coincide with each other. In addition, as shown in FIG. 9, the upper end 11a of the filter member 11, the upper end 12a of the skin side nonwoven sheet 12, and the upper end 18a of the non-skin side nonwoven sheet 18 coincide with each other, and the lower end 11b of the filter member 11, the upper end 18a of the skin side nonwoven sheet, The lower end 12b of the woven fabric sheet 12 and the lower end 18b of the non-skin side nonwoven fabric sheet coincide with each other. It should be noted that the positional deviation of the upper and lower turn-back portions 101 caused by the thickness of the sheet is not included. Thus, the heat-absorbing agent 30 and the cooling agent 80 can be arranged over a wide range of the plane of the mask main body 10, which enables the wearer to feel the cooling of the mask 3 in a wide range of the mask 3. In addition, the filter member 11 can be installed over a wide range of the plane of the mask main body 10, and a collection effect can be obtained. However, the configuration is not limited thereto, and it is not necessary that the outer peripheral ends of the filter member 11, the outer peripheral ends of the skin-side nonwoven fabric sheet 12, and the outer peripheral ends of the non-skin-side nonwoven fabric sheet 18 coincide with each other.

Furthermore, preferably, the filter member 11 has a lower basis weight of the heat-absorbing agent 30 and the cooling agent 80 than the skin-side nonwoven fabric sheet 12, and more preferably, the filter member 11 is not provided with the heat-absorbing agent 30. And cooling agent 80. In this case, it is possible to suppress deterioration of the collecting function of the filter member 11 due to the attachment of the heat absorbing agent 30 and the cooling agent 80 to the filter member 11 .

The mask 3 of the present embodiment has a mask main body 10 in which a filter member 11, a skin-side nonwoven sheet 12, and a non-skin-side nonwoven sheet 18 are joined in the thickness direction, but the configuration is not limited thereto. For example, the filter member 11, the skin side nonwoven fabric sheet 12, the non-skin side nonwoven fabric sheet 18, and different members may be laminated in the thickness direction.

===Other Embodiments===

Although the above-mentioned embodiments of the present invention have been described, the above-mentioned embodiments are intended to facilitate the understanding of the present invention, and are not intended to limit the interpretation of the present invention. In addition, the present invention can be modified or improved without departing from the gist of the present invention, and it goes without saying that the present invention includes equivalents thereof.

The mask of the present invention may be a mask that does not include a fragrance generating body that produces a fragrance by dissolution due to moisture. Even in the case of not including a fragrance generating body that produces a fragrance due to dissolution due to moisture, if the mask includes a non-woven fabric sheet provided with a heat absorbing agent, the wearer can feel the cooling sensation caused by the mask.

Explanation of reference signs

1, 2, 3: (disposable) masks,

10: mask main body, 11: filter member, 12: skin side non-woven fabric sheet (non-woven fabric sheet),

13: side panel, 14: welding part, 15: shape retaining member, 16: joint part,

18: non-skin side nonwoven sheet (second nonwoven sheet),

20: earhook part,

30: Endothermic agent,

40: mask main body, 41: filter member, 42: nonwoven fabric sheet (nonwoven fabric sheet) on the skin side,

43, 44: a pair of pieces, 45: a junction, 46: a shape-retaining member,

47: joint part, 48: high basis weight part,

50: earhook part,

80: Cooling agent

Claims (24)

1. A disposable mask, comprising: the main body of the mask; and an earhook portion for hanging around the wearer's ear, The main body of the mask has: a filter member that collects at least one of viral droplets and bacterial droplets, and A non-woven fabric sheet is provided on the skin side of the filter member and includes a heat absorbing agent. 2. disposable mouth mask according to claim 1, is characterized in that, The heat absorbing agent contains any one of sugar alcohol and sugar. 3. The disposable mouth mask according to claim 1 or 2, characterized in that, the non-skin-side surface of the filter member forms at least a portion of the non-skin-side surface of the mask body portion, and The skin-side surface of the nonwoven fabric sheet forms at least a part of the skin-side surface of the mask main body. 4. disposable mouth mask according to claim 3, is characterized in that, The heat absorbing agent is provided on a portion forming at least a part of the skin-side surface of the mask main body. 5. The disposable mouth mask according to any one of claims 1 to 4, characterized in that, The filter member is a non-woven sheet made of polyolefin-based fibers and subjected to dielectric polarization, and The endothermic agent does not contain alcohol. 6. The disposable mouth mask according to any one of claims 1 to 5, characterized in that, The endothermic agent is non-volatile. 7. The disposable mouth mask according to any one of claims 1 to 6, characterized in that, The outer peripheral end of the filter member and the outer peripheral end of the nonwoven fabric sheet coincide with each other. 8. The disposable mouth mask according to any one of claims 1 to 7, characterized in that, The filter member has a lower basis weight of the heat absorbing agent than the nonwoven fabric sheet. 9. disposable mouth mask according to claim 8, is characterized in that, The heat absorbing agent is not provided in the filter member. 10. The disposable mouth mask according to any one of claims 1 to 9, characterized in that, The main body of the mask has an up-down direction and a left-right direction, At the central portion in the up-down direction, the filter member and the nonwoven fabric sheet are folded into a pleat-like shape at creases extending in the left-right direction, At both sides of the mask main body in the left-right direction, the filter member and the non-woven fabric sheet are joined in a state of being folded into the pleat-like shape, and The central portion in the vertical direction has a portion in which the basis weight of the heat-absorbing agent in the mask main body is higher than the basis weight of the heat-absorbing agent in the end portions in the vertical direction. 11. The disposable mouth mask according to any one of claims 1 to 8, characterized in that, The main body of the mask has an up-down direction and a left-right direction, At the central portion in the up-down direction, the filter member and the nonwoven fabric sheet are folded into a pleat-like shape at creases extending in the left-right direction, At both sides of the mask main body in the left-right direction, the filter member and the non-woven fabric sheet are joined in a state of being folded into the pleat-like shape, and On both sides of the mask main body in the left-right direction, the basis weight of the heat-absorbing agent in the center in the up-down direction is higher than that in the end parts in the up-down direction. The basis weight of the heat absorbing agent mentioned above. 12. The disposable mouth mask according to any one of claims 1 to 11, characterized in that, The main body of the mask has an up-down direction and a left-right direction, At the central portion in the up-down direction, the filter member and the nonwoven fabric sheet are folded into a pleat-like shape at creases extending in the left-right direction, On both sides of the left-right direction of the mask main body, the filter member and the non-woven fabric sheet are joined in a state of being folded into the pleat-like shape, The heat absorbing agent is provided on the whole of the non-woven fabric sheet in the mask main body, and The central portion in the vertical direction has a portion in which the basis weight of the heat-absorbing agent in the mask main body is higher than the basis weight of the heat-absorbing agent in the end portions in the vertical direction. 13. The disposable mouth mask according to any one of claims 1 to 12, characterized in that, The main body of the mask has an up-down direction, a left-right direction and a thickness direction, At least one of the upper end and the lower end of the main body of the mask has a folded portion where the non-woven fabric sheet is folded toward the non-skin surface, and The heat absorbing agent is provided on a skin-side surface of the nonwoven fabric sheet at a non-folded portion overlapping the folded portion in the thickness direction of the mask main body. 14. The disposable mouth mask according to claim 13, characterized in that, The upper end portion of the mask body portion has the folded portion, and The heat absorbing agent is provided on the non-skin side surface of the nonwoven fabric sheet in the folded portion. 15. The disposable mouth mask according to any one of claims 1 to 9, characterized in that, The main body of the mask includes: a pair of sheets covering the right and left sides of the wearer's face, respectively, and an engaging portion that engages the pair of sheet portions, In said disposable mask in the unfolded state, The mask main body has an up-down direction and a left-right direction, and The center portion in the left-right direction of the mask main body portion has a high basis weight portion in which the heat-absorbing agent has a higher basis weight than that in both end portions in the left-right direction. basis weight. 16. The disposable mouth mask according to claim 15, characterized in that, The high basis weight portion is continuously provided in the up-down direction from the upper end to the lower end of the mask main body portion. 17. The disposable mouth mask according to any one of claims 1 to 16, characterized in that, The ear hook portion is joined to the skin-side surface of the mask main body portion. 18. The disposable mouth mask according to any one of claims 1 to 17, characterized in that, The heat absorbing agent is mixed into at least a part of fibers constituting the nonwoven fabric sheet. 19. The disposable mouth mask according to any one of claims 1 to 17, characterized in that, The heat absorbing agent is applied to the skin-side surface of the nonwoven fabric sheet. 20. The disposable mouth mask according to any one of claims 1 to 19, characterized in that, The nonwoven sheet includes hydrophilic fibers. 21. The disposable mouth mask according to any one of claims 1 to 20, characterized in that, The air resistance value of the filter member is 0.45 kPa·s/m or less. 22. The disposable mouth mask according to any one of claims 1 to 21, characterized in that, The main body of the mask has an up-down direction and a left-right direction, and Both side portions in the left-right direction each have a portion in which the basis weight of the heat-absorbing agent in the mask main body is higher than the basis weight of the heat-absorbing agent in the center portion in the left-right direction. 23. The disposable mouth mask according to any one of claims 1 to 22, characterized in that, The mask main body part has a second nonwoven fabric sheet, and the second nonwoven fabric sheet is arranged to face one side surface or the other side surface of the nonwoven fabric sheet in the thickness direction, and A cooling agent is provided in the second nonwoven fabric sheet. 24. The disposable mouth mask according to any one of claims 1 to 23, characterized in that, The nonwoven fabric sheet has the other side surface smoother than one side surface, The other side surface forms at least a part of the skin side surface of the mask main body, and The heat absorbing agent is disposed at least on the other side surface.

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