Disposable masks

Abstract

A disposal mask (1, 2) is characterized by having a mask main body part (10, 40) and an ear hooking part (20, 50) to be hooked around the ears of a wearer, wherein the mask main body part (10, 40) has a filter member (11, 41) that collects at least one of viral droplets and bacterial droplets, and non-woven fabric (12, 42) which is disposed on the skin surface side of the filter member (11, 41) and has an endothermic agent (30) placed therein.

Description

[Technical field]

[0001] The present invention relates to a disposable mask. [Background technology]

[0002] Since masks are used in contact with the wearer's face, Patent Document 1 discloses that a moisturizing agent or humectant is added to the innermost layer of the mask, which provides a pleasant feel to the skin when worn and a moist feeling. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-52400 A Summary of the Invention [Problem to be solved by the invention]

[0004] A problem with masks is that the space inside the mask is prone to becoming steamy due to the wearer's moist breath. Particularly during the hot summer months, wearing a mask for long periods of time can lead to heatstroke. The mask in Patent Document 1 contains a moisturizing agent, so the wearer feels a cool sensation (cool to the touch) on the skin that comes into contact with the mask. However, the cooling sensation caused by the moisturizer is due to the temperature difference between the moisturizer's temperature and the wearer's body temperature. Therefore, the cooling sensation caused by the moisturizer, which has a temperature similar to the outside air temperature, has a low cooling effect and is insufficient to improve the stuffiness inside the mask. In addition, the outer edge of the mask usually easily fits the wearer's skin, but a space is likely to be created between the mask and the wearer in the center of the mask. Therefore, in the center of the mask, which is easily stuffy due to the wearer's breath, the wearer's skin is less likely to come into contact with the moisturizer, and the wearer is less likely to feel the cooling sensation.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a disposable mask that improves stuffiness inside the mask and makes it easier for the wearer to feel cool. [Means for solving the problem]

[0006] The main invention to achieve the above object is: A disposable mask having a mask body and ear loops that are hung on the wearer's ears, The mask body includes: A filter member that collects at least one of virus droplets and bacterial droplets; A nonwoven fabric provided on the skin surface side of the filter member and having a heat absorbing agent disposed therein; of Has The mask body includes: It has a vertical direction and a horizontal direction, At a central portion in the up-down direction, the filter member and the nonwoven fabric are folded into a pleat shape by creases along the left-right direction, At both sides of the mask body in the left-right direction, the filter member and the nonwoven fabric are joined in a pleated state, In both left and right side portions of the mask body, the weight of the heat absorbing agent is greater in the vertical center portion than in the vertical end portions. This is a disposable mask that is characterized by the following. Other features of the present invention will become apparent from the following detailed description of the present invention and the accompanying drawings. Effect of the Invention

[0007] According to the present invention, a disposable mask can be provided that reduces stuffiness inside the mask and makes it easier for the wearer to feel cool. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view of a disposable mask 1 of a first embodiment. [Diagram 2] 2 is a cross-sectional view of the mask 1 taken along line II in FIG. [Diagram 3] FIG. 2 is a diagram showing the mask 1 being worn. [Figure 4] FIG. 4A is a plan view showing a folded state of a disposable mask 2 of the second embodiment, and FIG. 4B is a front view of the mask 2 in an unfolded state. [Diagram 5] FIG. 2 is a front view of the mask 2 when worn. [Figure 6] FIG. 2 is a schematic diagram showing a mask 2 in a worn state as viewed from above. [Figure 7] FIG. 11 is a plan view of a disposable mask 3 of a third embodiment, as viewed from the non-skin side. [Figure 8] FIG. 2 is a plan view of the mask 3 as seen from the skin side. [Figure 9] 8 is a cross-sectional view of the mask body 10 taken along line II in FIG. 7. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] At least the following points will become apparent from the description of this specification and the accompanying drawings. A disposable mask having a mask body and ear loops that are hung around the wearer's ears, the mask body having a filter member that collects at least one of viral droplets and bacterial droplets, and a nonwoven fabric provided on the skin side of the filter member and having a heat absorbing agent disposed therein.

[0010] According to such a disposable mask, the heat absorbing agent comes into contact with the moist breath of the wearer and causes an endothermic reaction, lowering the temperature of the space inside the mask, thereby improving stuffiness inside the mask. In addition, the filter member makes it easier for the wearer's breath and the heat absorbing agent to remain in the space inside the mask. This increases the contact time between the wearer's breath and the heat absorbing agent, enhancing the cooling effect and increasing the durability of the cooling effect. This makes it easier for the wearer to feel the cooling effect of the mask.

[0011] In such a disposable mask, the heat absorbing agent includes any one of sugar alcohols and sugars.

[0012] Such a disposable mask is safe even when the heat absorbing agent comes into contact with the wearer's mouth.

[0013] In such a disposable mask, the non-skin side of the filter member forms at least a part of the non-skin side of the mask body, and the skin side of the nonwoven fabric forms at least a part of the skin side of the mask body.

[0014] According to such a disposable mask, the number of materials laminated in the thickness direction in the mask body is reduced, thereby improving stuffiness inside the mask.

[0015] In the disposable mask, the heat absorbing agent is disposed in a portion of the mask body that forms at least a part of the skin side surface.

[0016] With such disposable masks, endothermic reactions are likely to occur close to the wearer's skin, making the wearer more likely to feel a cool sensation.

[0017] In the disposable mask, the filter member is a sheet of dielectrically polarized nonwoven fabric made of polyolefin-based fibers, and the heat-absorbing agent does not contain alcohol.

[0018] Such a disposable mask can prevent the alcohol component of the heat absorbing agent from reducing the collection effect of the filter member.

[0019] In such a disposable mask, the heat absorbing agent is non-volatile.

[0020] Such a disposable mask can prevent the heat absorbing agent from volatilizing and adhering to the filter member even before the mask is used, thereby preventing a reduction in the collection effect of the filter member.

[0021] In such a disposable mask, the outer peripheral edge of the filter member coincides with the outer peripheral edge of the nonwoven fabric.

[0022] According to such a disposable mask, the nonwoven fabric (heat absorbing agent) can be arranged over a wide area of ​​the plane of the mask body, so that the temperature of a wide area inside the mask can be lowered. The filter member can be arranged over a wide area of ​​the plane of the mask body, so that the collection effect of the filter member can be improved.

[0023] In such a disposable mask, the filter member has a basis weight of the heat absorbing agent lower than that of the nonwoven fabric.

[0024] According to such a disposable mask, since a large amount of the heat absorbing agent is arranged in the nonwoven fabric close to the wearer, the heat absorbing reaction is likely to occur in a position close to the wearer, and the wearer is likely to feel a cool sensation. In addition, the heat absorbing agent attached to the filter member can prevent the collection effect of the filter member from being reduced.

[0025] In such a disposable mask, the heat absorbing agent is not disposed in the filter member.

[0026] According to such a disposable mask, it is possible to prevent a reduction in the collection effect of the filter member due to the heat absorbing agent attached to the filter member.

[0027] In such a disposable mask, the mask body comprises: It has a vertical direction and a horizontal direction, At a central portion in the up-down direction, the filter member and the nonwoven fabric are folded into a pleat shape by creases along the left-right direction, At both sides of the mask body in the left-right direction, the filter member and the nonwoven fabric are joined in a pleated folded state, and the central portion in the up-down direction has a portion in which the basis weight of the heat absorption agent of the mask body is higher than that of the ends in the up-down direction.

[0028] With such a disposable mask, more of the heat absorbing agent can come into contact with the wearer's breath in the vertical center near the wearer's nostrils and mouth, enhancing the cooling effect. Also, since both lateral sides of the mask body come into contact with the wearer's cheeks, providing a portion with a high basis weight of the heat absorbing agent in these areas makes it easier for the wearer to feel the cooling effect.

[0029] In this disposable mask, the mask main body has a vertical and horizontal direction, and in the vertical central portion, the filter member and the nonwoven fabric are folded into pleats by creases along the horizontal direction, and on both left and right side portions of the mask main body, the filter member and the nonwoven fabric are joined in the pleated state, and on both left and right side portions of the mask main body, the basis weight of the heat absorbing agent is higher in the vertical central portion than at the vertical ends.

[0030] With such a disposable mask, more of the heat absorbing agent can come into contact with the wearer's breath in the vertical center portion close to the wearer's nostrils and mouth, enhancing the cooling effect.

[0031] In this disposable mask, the mask main body has a vertical and horizontal direction, and in the vertical central portion, the filter member and the nonwoven fabric are folded into pleats by creases along the horizontal direction, and on both sides in the horizontal direction of the mask main body, the filter member and the nonwoven fabric are joined in the pleated state, the heat absorbing agent is distributed over the entire area of ​​the nonwoven fabric of the mask main body, and the vertical central portion has a portion where the basis weight of the heat absorbing agent in the mask main body is higher than that of the vertical ends.

[0032] With such a disposable mask, more of the heat absorbing agent can come into contact with the wearer's breath in the vertical center portion close to the wearer's nostrils and mouth, enhancing the cooling effect.

[0033] In this disposable mask, the mask body has a top-bottom direction, a left-right direction, and a thickness direction, and at least one of the upper and lower ends of the mask body has a folded portion where the nonwoven fabric is folded back to the non-skin side, and the heat-absorbing agent is disposed on the skin side of the nonwoven fabric in the non-folded portion of the mask body that overlaps with the folded portion in the thickness direction.

[0034] With such a disposable mask, the nonwoven fabric containing the heat absorbing agent can be prevented from being covered by the filter member from the skin side at the upper and lower ends of the mask body, so that the heat absorbing reaction is more likely to occur in a position close to the wearer, making it easier for the wearer to feel a cool sensation.

[0035] In such a disposable mask, the upper end portion of the mask body has the folded portion, and the heat absorbing agent is disposed on the non-skin side of the nonwoven fabric in the folded portion.

[0036] With such a disposable mask, when the breath discharged outside the mask rises, it easily comes into contact with the heat absorbing agent on the non-skin side (outer side) of the folded part, and the temperature near the upper end of the mask body can be lowered. In addition, the temperature of the breath also drops, making it difficult for the wearer's glasses to fog up.

[0037] In this disposable mask, the mask main body has a pair of sheet portions that cover the right and left sides of the wearer's face, respectively, and a joint portion that joins the pair of sheet portions, and when the disposable mask is in an unfolded state, the mask main body has an up-down direction and a left-right direction, and the central portion of the mask main body in the left-right direction has a high-basis weight portion in which the basis weight of the heat-absorbing agent is higher than both ends in the left-right direction.

[0038] With such a disposable mask, more of the heat absorbing agent can come into contact with the wearer's breath in the left-right central part of the mask body close to the wearer's nostrils and mouth, enhancing the cooling effect.

[0039] In such a disposable mask, the high basis weight portion is disposed continuously in the up-down direction from the upper end to the lower end of the mask body.

[0040] With such a disposable mask, more of the heat absorbing agent can come into contact with the wearer's breath in the left-right central part of the mask body close to the wearer's nostrils and mouth, enhancing the cooling effect.

[0041] In such a disposable mask, the ear loops are joined to the skin side of the mask body.

[0042] With this type of disposable mask, in the part of the mask body where the ear loops are attached (the part that is likely to come into close contact with the wearer's skin), the ear loops are located closer to the skin than the nonwoven fabric, preventing the heat-absorbing agent from coming into direct, strong contact with the wearer's skin.

[0043] In such a disposable mask, the heat absorbing agent is kneaded into at least a portion of the fibers constituting the nonwoven fabric.

[0044] In such a disposable mask, the heat absorbing agent is less likely to fall off from the nonwoven fabric, and the cooling effect of the heat absorbing agent is more durable.

[0045] In such a disposable mask, the heat absorbing agent is applied to the skin side of the nonwoven fabric.

[0046] In such a disposable mask, the heat absorbing agent is disposed close to the wearer and is more likely to come into contact with the wearer's breath, enhancing the cooling effect.

[0047] In such a disposable mask, the nonwoven fabric contains hydrophilic fibers.

[0048] According to such a disposable mask, the hydrophilic fibers of the nonwoven fabric make it easier for moisture to be retained within the nonwoven fabric, and the endothermic reaction of the heat-absorbing agent occurs more easily, thereby enhancing the cooling effect.

[0049] In the disposable mask, the filter member has an airflow resistance of 0.45 kPa·s / m or less.

[0050] According to such a disposable mask, the inside of the mask does not easily become stuffy because the filter member has good breathability.

[0051] In such a disposable mask, the mask body has an up-down direction and a left-right direction, and both side portions in the left-right direction have portions in which the basis weight of the heat absorbing agent in the mask body is higher than that of a central portion in the left-right direction.

[0052] With such a disposable mask, the left and right sides of the mask body come into contact with the wearer's cheeks, and by providing these areas with a higher basis weight of heat-absorbing agent than the left and right central portion, the wearer can more easily feel a cool sensation.

[0053] In such a disposable mask, the mask body has a second nonwoven fabric arranged to face one or the other side of the thickness direction of the nonwoven fabric, and a cooling agent is disposed in the second nonwoven fabric.

[0054] With such disposable masks, the wearer is more likely to feel the cooling sensation due to the cooling agent before the endothermic agent comes into contact with the wearer's moist breath and lowers the surface temperature of the mask through an endothermic reaction, so the wearer is more likely to feel the cooling sensation caused by the mask from the moment they put it on.

[0055] In such a disposable mask, the nonwoven fabric has a side that is smoother than the other side, the other side forming at least a part of the skin side of the mask body, and the heat absorbing agent is provided on at least the other side.

[0056] With such a disposable mask, the other side, which is smoother than the first side, has a larger contact area with the skin than the other side, so by placing a heat-absorbing agent on the other side, the wearer can more easily feel a cool sensation.

[0057] Such a disposable mask does not include a fragrance generating body that dissolves in water to generate a fragrance.

[0058] With such a disposable mask, even if the disposable mask does not have a fragrance generating unit, the wearer can easily feel the cool sensation caused by the mask from the moment they put it on.

[0059] ==First embodiment=== Fig. 1 is a plan view of a disposable mask 1 (hereinafter also referred to as a "mask") of a first embodiment. Fig. 2 is a cross-sectional view of the mask 1 taken along line II in Fig. 1. Fig. 3 is a diagram showing the mask 1 being worn.

[0060] (Basic configuration of mask 1) The mask 1 has a mask body 10 that can cover at least the mouth and nostrils of the wearer, and ear hooks 20 that are hung around the wearer's ears. The mask body 10 has a top-bottom direction, a left-right direction, and a thickness direction. In the thickness direction, the inside that faces the wearer's face is also called the skin side or skin-facing side, and the opposite outside is also called the non-skin side or non-skin-facing side.

[0061] Before use, the mask body 10 has a rectangular shape that is long in the left-right direction when viewed in a plan view from the thickness direction (FIG. 1). The mask body 10 has a filter member 11 that collects at least one of virus droplets and bacterial droplets, a skin-side nonwoven fabric (nonwoven fabric) 12 provided on the skin-facing side of the filter member 11, and a side sheet 13.

[0062] The filter member 11 is a member that has a high effect of capturing fine particles such as virus droplets, bacterial droplets, pollen, etc. Specifically, the filter member 11 is preferably a member that satisfies at least one of the following: BFE (bacterial filtration efficiency test: test particle size: about 3 μm) is 95% or more, and VFE (virus filtration efficiency test: test particle size: about 1.7 μm) is 95% or more.

[0063] An example of the filter member 11 is a sheet of dielectrically polarized (electret-treated) nonwoven fabric made of polyolefin fibers. The electret treatment creates a dielectric state in which the surface of the polyolefin fibers is polarized by applying a predetermined amount of positive or negative charge, thereby providing the filter member with a collection function.

[0064] Specifically, the filter member 11 can be, for example, a single nonwoven fabric sheet without seams, in which an electret-treated meltblown nonwoven fabric containing polypropylene fibers, which are polyolefin fibers, and an electret-treated spunbond nonwoven fabric containing polypropylene fibers are integrally formed. The meltblown nonwoven fabric placed on the skin side has an average fiber diameter of 0.5 to 3 μm and a basis weight of 1.5 to 5 g / m. 2 The spunbond nonwoven fabric arranged on the non-skin side has an average fiber diameter of 15 to 30 μm and a basis weight of 18 to 50 g / m 2 It is preferable that the nonwoven fabric is made of polypropylene fibers alone, or polypropylene fibers to which polyethylene fibers, for example, have been added. The nonwoven fabric on the non-skin side is not limited to spunbond nonwoven fabric, but may be spunlace nonwoven fabric, air-through nonwoven fabric, or needle punch nonwoven fabric. However, the present invention is not limited to the above, and the filter member 11 may not be electret-treated. For example, the filter member 11 may be a member (such as a nanofilter) that has small fiber gaps and collects virus droplets by adhering them to the fiber gaps.

[0065] The skin side nonwoven fabric 12 is provided with a heat absorbing agent 30. The skin side nonwoven fabric 12 may be any nonwoven fabric capable of accommodating the heat absorbing agent 30. Preferably, the skin side nonwoven fabric 12 is a nonwoven fabric that is pleasant to the touch, such as a spunbond nonwoven fabric containing polypropylene fibers.

[0066] The mask 1 of the first embodiment is a pleated type in which the filter member 11 and the skin-side nonwoven fabric 12 are folded in a pleated shape at creases F along the left-right direction in the vertical center of the mask body 10 to form folds. The mask body 10 shown in FIG. 2 has four creases F1 to F4 visible from the non-skin side and four creases F5 to F8 visible from the skin side. The creases F1 to F3, F8 are mountain folds that convex upward, and the creases F4, F5 to F7 are valley folds that convex downward. However, the number and orientation of the creases F are not limited to the configuration exemplified in FIG. 2.

[0067] Before use, the mask 1 maintains a pleated folded shape, and the mask body 10 is in a substantially flat state. The pleated folds F allow the mask body 10 to expand in the vertical direction and to protrude in an Ω shape on the non-skin side. Thus, as shown in FIG. 3, the wearer of the mask 1 can expand the mask body 10 in the vertical direction according to the length from the nose to the chin, and the mask body 10 can cover the mouth and nostrils.

[0068] The upper and lower ends of the mask body 10 have folded-back portions 101 where the filter member 11 and the skin-side nonwoven fabric 12 are folded back to the non-skin side, respectively. In the following description, the part of the mask body 10 that overlaps with the folded-back portion 101 in the thickness direction is referred to as a non-folded portion 102. The folded-back portions 101 increase the strength of the upper and lower ends of the mask body 10. In addition, the opening of the filter member 11 and the skin-side nonwoven fabric 12 can be suppressed.

[0069] The side sheets 13 are provided on both sides of the mask body 10 in the left-right direction. The side sheets 13 are provided so as to sandwich, from the skin side and non-skin side, both left-right sides of the filter member 11 and the skin side nonwoven fabric 12, which maintain the pleated folds F and the upper and lower folds 101. The side sheets 13 are preferably sheets that are breathable and soft to the touch, and examples of such sheets include melt-blown nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, and air-through nonwoven fabric.

[0070] The mask body 10 has welding parts 14 for joining overlapping sheets together, for example, welding parts 14 by heat welding or ultrasonic welding. As shown in FIG. 1, on both lateral sides of the mask body 10, a plurality of welding parts 14 for joining the filter member 11, the skin-side nonwoven fabric 12, and the side sheet 13 are provided along the vertical direction. On the upper and lower ends and the vertical center of the mask body 10, a plurality of welding parts 14 for joining the filter member 11 and the skin-side nonwoven fabric 12 are provided along the left and right direction. However, the pattern of the welding parts 14 is not limited to that exemplified in FIG. 1. In addition, the overlapping sheets may be joined together by an adhesive (for example, a hot melt adhesive).

[0071] As shown in FIG. 2, a shape-retaining member 15 is disposed at the upper end of the mask body 10 between the filter member 11 at the folded-back portion 101 and the filter member 11 at the non-folded portion 102. The shape-retaining member 15 is a thin rectangular member that can be easily bent by the wearer and retains its shape unless an external force is applied again. Examples of the shape-retaining member 15 include those formed of flexible thermoplastic resin or metal pieces. The wearer of the mask 1 can deform the shape-retaining member 15 to match the shape of his or her nose, and the occurrence of a gap between the upper end of the mask body 10 and the wearer's face can be suppressed. In addition, welding portions 14 are provided on both sides of the shape-retaining member 15 in the vertical direction, suppressing the positional deviation of the shape-retaining member 15.

[0072] The ear loops 20 are ring-shaped members extending from both left and right sides of the mask body 10. The ear loops 20 are preferably made of a stretchable material, such as a rubber string, a stretchable nonwoven fabric, or a stretchable film. The ear loops 20 shown in FIG. 1 are rubber strings, and are joined to the non-skin side of the mask body 10 by joints 16. One end of the rubber string (20) is joined to the joint 16 at the upper end of the mask body 10, and the other end of the rubber string (20) is joined to the joint 16 at the lower end of the mask body 10. The joints 16 can be formed by welding or by using an adhesive.

[0073] (Regarding mask 1 having heat absorbing agent 30) Unlike masks made of gauze or the like that are repeatedly used while being washed, the mask 1 of this embodiment is equipped with a filter member 11 that captures virus droplets and bacterial droplets. Therefore, in order to prevent the capturing effect of the filter member 11 from being reduced by washing, the mask 1 of this embodiment is a mask intended to be used as a disposable item.

[0074] While wearing a mask can prevent the intrusion of virus droplets and other fine particles, the mask also creates the problem that the space inside the mask can easily become humid due to the wearer's moist breath. Particularly during hot summer months, the humid air inside the mask can cause heatstroke.

[0075] Therefore, in the mask 1 of the present embodiment, the skin-side nonwoven fabric 12 having the heat-absorbing agent 30 disposed therein is provided on the skin-facing side of the filter member 11. The heat-absorbing agent 30 is an agent that reacts with water to cause an endothermic reaction.

[0076] Therefore, the moist breath of the wearer comes into contact with the heat absorbing agent 30 of the skin side nonwoven fabric 12, and the heat absorbing agent 30 undergoes an endothermic reaction, lowering the surface temperature of the mask 1 and improving stuffiness inside the mask 1. As a result, the sense of breathlessness caused by wearing the mask 1 can be reduced, and the occurrence of heat stroke can be suppressed.

[0077] In particular, the filter member 11 that captures virus droplets and the like has low breathability (high airflow resistance value) compared to the skin-side nonwoven fabric 12. Therefore, in the mask 1 of this embodiment, the wearer's breath is less likely to be discharged outside the mask 1, and the space inside the mask 1 is more airtight than a mask made of gauze or the like that does not have the filter member 11. In other words, the wearer's exhaled breath and the heat absorbing agent 30 are less likely to pass through the filter member 11 and are more likely to remain in the space inside the mask 1. Therefore, the contact time between the wearer's breath and the heat absorbing agent 30 increases, the surface temperature of the mask 1 is more likely to decrease, and stuffiness inside the mask 1 is more likely to be improved. Therefore, the wearer can easily feel the coolness inside the mask 1. In addition, the breath containing the heat absorbing agent 30 is more likely to circulate inside the filter member 11 due to the wearer's breathing, so the duration of the cool feeling effect is also increased. This also makes it easier for the wearer to feel the coolness inside the mask 1.

[0078] In addition, it is preferable that the mask 1 has a shape-retaining member 15. This makes it difficult for gaps to form between the mask 1 and the wearer (face), and increases the degree of sealing of the space inside the mask 1. This increases the contact time and circulation of the wearer's breath and the heat-absorbing agent 30, enhancing the cooling effect and its duration. However, this is not limited to the above, and the mask 1 does not necessarily have to have a shape-retaining member 15.

[0079] Also, unlike the mask 1 of this embodiment, when a cool feeling (cool to the touch) is given to the wearer by contacting the skin of the wearer with a moisturizing agent or the like arranged on the mask, the cool feeling is due to the temperature difference between the temperature of the moisturizing agent and the body temperature of the wearer. Therefore, when the outside air temperature is high and the temperature of the moisturizing agent is high, which is about the same as the outside air temperature, the cooling effect is low and is insufficient to improve the stuffiness inside the mask, and the wearer is unlikely to feel the cool feeling. Also, normally, the outer edge of the mask is likely to adhere to the wearer's skin, but a space is likely to be created between the mask and the wearer at the center of the mask. Therefore, in a mask that gives a cool to the touch feeling, the wearer's skin is unlikely to come into contact with the moisturizing agent at the center of the mask (nostrils and mouth area) where the wearer's breath is likely to cause stuffiness, and the wearer is unlikely to feel the cool feeling.

[0080] In contrast, the mask 1 of this embodiment utilizes the endothermic reaction of the endothermic agent 30. Therefore, it is not easily affected by the outside air temperature, and the surface temperature of the mask 1 can be lowered even during the hot summer months, thereby improving stuffiness inside the mask 1. In addition, the mask 1 of this embodiment lowers the air temperature inside the mask 1, so the wearer can feel a cool sensation even in areas where the mask 1 is not in contact with the wearer's skin. In particular, the wearer can feel a cool sensation even in the center of the mask 1 (nostrils and mouth area), which is prone to becoming stuffy due to the wearer's breath but is prone to creating a space between the mask and the wearer's skin.

[0081] The endothermic agent 30 (endothermic component) preferably contains any one of sugar alcohols and sugars. Examples of sugar alcohols include xylitol, erythritol, dextrose, sorbitol, etc. Examples of sugars include trehalose, sucrose (cane sugar), lactose (milk sugar), maltose (malt sugar), etc. These endothermic agents 30 are safe even when they come into contact with the mouth of the wearer of the mask 1.

[0082] The heat absorbing agent 30 may be kneaded into at least a part of the fibers constituting the skin side nonwoven fabric 12. That is, the heat absorbing agent 30 may be disposed in a stage prior to forming the skin side nonwoven fabric 12 by, for example, impregnating the fiber web prior to forming the skin side nonwoven fabric 12 with the heat absorbing agent 30 (solution) or mixing the heat absorbing agent 30 into the resin and then forming the fibers. Alternatively, a binder mixed with the heat absorbing agent 30 may be applied to the fiber web.

[0083] This makes it difficult for the heat absorbing agent 30 to fall off from the skin side nonwoven fabric 12, gradually bringing out the function of the heat absorbing agent 30, and increasing the durability of the cooling effect of the heat absorbing agent 30. In addition, it is possible to prevent the heat absorbing agent 30 from adhering to the filter member 11 before the mask 1 is used, which would otherwise cause the collection function of the filter member 11 to decrease.

[0084] However, the present invention is not limited to the above, and the heat absorbing agent 30 may be disposed on the surface of the fibers constituting the skin side nonwoven fabric 12. For example, the heat absorbing agent 30 may be applied to the skin side nonwoven fabric 12 by various known application methods such as spraying, roller coating, brushing, etc., or the skin side nonwoven fabric 12 may be immersed in the heat absorbing agent 30 (solution). In this case, the heat absorbing agent 30 is more likely to come into contact with the wearer's breath and an endothermic reaction is more likely to occur, thereby enhancing the cooling effect.

[0085] More preferably, the heat absorbing agent 30 is applied to the skin side of the skin side nonwoven fabric 12. By arranging the heat absorbing agent 30 in a position close to the wearer, the heat absorbing agent 30 is more likely to come into contact with the wearer's breath, enhancing the cooling effect. In addition, since the endothermic reaction occurs in a position close to the wearer, the surface temperature of the mask 1 is more likely to drop, making it easier for the wearer to feel a cooling sensation. However, the above is not limited, and the heat absorbing agent 30 may be applied to the non-skin side or both sides of the skin side nonwoven fabric 12.

[0086] The heat absorbing agent 30 may be liquid or solid (including gel, powder, etc.). Microcapsules encapsulating the heat absorbing agent 30 may be disposed in the skin side nonwoven fabric 12, and the heat absorbing agent 30 may be released by physical or chemical stimuli (for example, heat, pressure, impact, light, liquid, etc.). The heat absorbing agent 30 also includes a solvent that dissolves and disperses the heat absorbing component having a heat absorbing effect.

[0087] The heat absorbing agent 30 may be disposed over the entire plane of the skin side nonwoven fabric 12, or may be disposed over a portion of the plane of the skin side nonwoven fabric 12. The heat absorbing agent 30 is applied to the skin side nonwoven fabric 12 with a certain basis weight (amount per unit area: g / m 2 ) or may be arranged with different basis weights depending on the area of ​​the skin side nonwoven fabric 12.

[0088] Moreover, it is preferable that the skin side nonwoven fabric 12 contains hydrophilic fibers. More preferably, the skin side nonwoven fabric 12 contains 50% or more hydrophilic fibers. This makes it easier for the skin side nonwoven fabric 12 to retain moisture contained in the wearer's breath, making it easier for the heat absorbing agent 30 in the skin side nonwoven fabric 12 to come into contact with moisture, and also lengthening the contact time. This makes it easier for the heat absorbing agent 30 to cause an endothermic reaction, enhancing the cooling effect.

[0089] Examples of hydrophilic fibers include regenerated cellulose fibers such as rayon, natural cellulose fibers such as cotton and crushed pulp, and semi-synthetic cellulose fibers such as acetate. Hydrophobic fibers (e.g., polyethylene fibers and polypropylene fibers) may be modified to be hydrophilic by being subjected to a hydrophilic treatment. A fiber having a contact angle of less than 90 degrees can be determined to be a highly hydrophilic fiber. However, the above is not limiting, and the skin side nonwoven fabric 12 does not necessarily have to contain hydrophilic fibers.

[0090] It is also preferred that the non-skin side of the filter member 11 forms at least a part of the non-skin side of the mask body 10, and the skin side of the skin side nonwoven fabric 12 forms at least a part of the skin side of the mask body 10. This reduces the number of sheets stacked in the thickness direction of the mask body 10, making it difficult for the space inside the mask 1 to become stuffy. In the mask body 10 of this embodiment, the area other than both sides in the left-right direction where the side sheets 13 are arranged is composed of two nonwoven fabrics (the filter member 11 and the skin side nonwoven fabric 12).

[0091] In the above case, the skin-side nonwoven fabric 12 with the heat-absorbing agent 30 disposed therein is located closest to the skin of the mask body 10. Therefore, the heat-absorbing agent 30 is more likely to come into contact with the wearer's breath, enhancing the cooling effect. Also, since the endothermic reaction occurs in a position close to the wearer, the surface temperature of the mask 1 is more likely to drop, making it easier for the wearer to feel a cooling sensation.

[0092] Furthermore, in the left-right and up-down central portion of the mask body 10, there is no side sheet 13, and in addition to being composed of two sheets of nonwoven fabric, there are no upper or lower folded-back portions 101 either (pleats F are present, but these folds F are expanded in the up-down direction when worn). In other words, in the portion of the mask 1 where the wearer's nostrils and mouth are located and which is prone to becoming stuffy, the number of sheets stacked in the thickness direction is approximately two, so the space inside the mask 1 is less likely to become stuffy.

[0093] However, the configuration of the mask body 10 is not limited to the above, and for example, another sheet may be arranged on the non-skin side of the filter member 11, on the skin side of the skin side nonwoven fabric 12, or between the filter member 11 and the skin side nonwoven fabric 12.

[0094] The airflow resistance of the filter member 11 is preferably 0.45 kPa·s / m or less, and more preferably 0.3 kPa·s / m or less. If the airflow resistance of the filter member 11 is higher than 0.45 kPa·s / m, the wearer may be more likely to feel stuffiness inside the mask 1, even if the mask 1 contains the heat absorbing agent 30. Therefore, by maintaining the air permeability of the filter member 11 at an appropriate level in addition to the cooling effect of the heat absorbing agent 30, stuffiness inside the mask 1 can be improved even during hot summer months.

[0095] However, it is preferable that the airflow resistance value of the filter member 11 is higher than that of the skin side nonwoven fabric 12. By doing so, the wearer's breath and the heat absorbing agent 30 are appropriately retained in the space inside the mask 1, and the contact time between the wearer's breath and the heat absorbing agent 30 increases, thereby improving the heat absorbing effect and its duration.

[0096] The airflow resistance 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 circle with a diameter of 100 mm) to obtain a sample. Then, using a Kato Tech Co., Ltd. air permeability tester (KES-F8) or an equivalent air permeability tester, the standard air flow rate is set to 2 cm / s, and the air permeability resistance of the sample is measured. This measurement is performed multiple times (for example, five times), and the average value can be used as the air permeability resistance of the filter member 11.

[0097] As described above, the filter member 11 of the present embodiment is a sheet of nonwoven fabric made of polyolefin fibers that has been dielectrically polarized (electret-treated). In this way, the filter member 11, which has a collection function due to electric charge, loses its collection function due to the adhesion of alcohol.

[0098] For this reason, when the above filter member 11 is employed, it is preferable that the heat absorbing agent 30 does not contain alcohol. This can prevent the collection effect of the filter member 11 from being reduced. For example, the solvent contained in the heat absorbing agent 30 is preferably a water-based solvent. Also, for example, when a solution in which an endothermic component is dissolved and dispersed in an alcohol-based solvent is applied to the skin side nonwoven fabric 12, it is preferable that the skin side nonwoven fabric 12 is merged with the filter member 11 in the production line of the mask 1 after the alcohol-based solvent is evaporated. In this way, it is preferable that the heat absorbing agent 30 in the mask 1 does not contain alcohol.

[0099] In addition, it is preferable that the heat absorbing agent 30 is non-volatile. This prevents the heat absorbing agent 30 from volatilizing toward the filter member 11 before use of the mask 1, causing the heat absorbing agent 30 to adhere to the filter member 11 and 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 under normal living conditions and has a boiling point of 100°C or higher.

[0100] In addition, it is preferable that the filter member 11 has a lower basis weight of the heat absorbing agent 30 than the skin side nonwoven fabric 12, and more preferably, the filter member 11 does not have the heat absorbing agent 30. In this way, a large amount of the heat absorbing agent 30 is arranged in the skin side nonwoven fabric 12 that is closer to the wearer. Therefore, the heat absorbing agent 30 is more likely to come into contact with the wearer's breath, and the cooling effect is enhanced. In addition, since the endothermic reaction occurs in a position close to the wearer, the surface temperature of the mask 1 is more likely to drop, and the wearer is more likely to feel a cooling sensation. In addition, the heat absorbing agent 30 attached to the filter member 11 can be prevented from reducing the collection function of the filter member 11.

[0101] The basis weights of the heat absorbing agent 30 disposed on the filter member 11 and the skin side nonwoven fabric 12 can be compared by a known method. For example, there is a method in which the filter member 11 and the skin side nonwoven fabric 12 are separated from the mask 1 using a cold spray or the like, and colored fine particles such as bamboo charcoal or cocoa powder are sprinkled on each of them, and then the particles are brushed off. A large number of particles adhere to the portion where the heat absorbing agent 30 is disposed. Therefore, by comparing the amount of particles adhered to the filter member 11 and the skin side nonwoven fabric 12, the basis weights of the heat absorbing agent 30 can be compared.

[0102] Alternatively, steam may be applied to each of the filter member 11 and the skin side nonwoven fabric 12, and the surface temperatures of each may be compared. Specifically, samples are prepared by cutting each of the filter member 11 and the skin side nonwoven fabric 12 to a predetermined size, and water is poured into two containers such as beakers, and the containers are covered with lids for each sample. A temperature sensor is attached on the sample, and the two containers covered with plastic wrap or the like are placed in a water bath heated to 40 degrees, and the temperatures of each sample are compared. The sample with a larger basis weight of the heat-absorbing agent 30 has a lower temperature over time due to the endothermic reaction of the heat-absorbing agent 30.

[0103] The above method may also be used to confirm that the heat absorbing agent 30 has been applied to the skin-side surface of the skin-side nonwoven fabric 12. For example, in the method of scattering particles, if the particles are attached to the skin-side surface of the skin-side nonwoven fabric 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 12. In the method of measuring the temperature by applying steam, a nonwoven fabric having the same configuration as the skin-side nonwoven fabric 12 but not having the heat absorbing agent 30 is prepared. If the temperature of the skin-side surface of the skin-side nonwoven fabric 12 is lower than that of the nonwoven fabric, it can be confirmed that the heat absorbing agent 30 has been applied to the skin-side surface of the skin-side nonwoven fabric 12.

[0104] In addition, in the mask body 10, it is preferable that the outer peripheral edge of the filter member 11 and the outer peripheral edge of the skin-side nonwoven fabric 12 coincide with each other. In the mask 1 of this embodiment, as shown in FIG. 1, the left end 11c of the filter member 11 coincides with the left end 12c of the skin-side nonwoven fabric 12, and the right end 11d of the filter member 11 coincides with the right end 12d of the skin-side nonwoven fabric 12. As shown in FIG. 2, the upper end 11a of the filter member 11 coincides with the upper end 12a of the skin-side nonwoven fabric 12, and the lower end 11b of the filter member 11 coincides with the lower end 12b of the skin-side nonwoven fabric 12. Note that this does not include positional deviations of the thickness of the sheet at the upper and lower folded-back portions 101. In addition, at the ends 101a and 101b on the vertical center side of the folded-back portion 101, the ends of the filter member 11 and the skin-side nonwoven fabric 12 may be misaligned.

[0105] As described above, the skin side nonwoven fabric 12 and the heat absorbing agent 30 can be disposed over a wide range on the plane of the mask body 10. Thus, the temperature of a wide range of the space inside the mask 1 can be reduced by the heat absorbing agent 30. In addition, the filter member 11 can be disposed over a wide range on the plane of the mask body 10, and a collection effect can be obtained. However, this is not limited to the above, and the outer circumferential edge of the filter member 11 and the outer circumferential edge of the skin side nonwoven fabric 12 may be misaligned.

[0106] In the mask 1 of the first embodiment, the filter member 11 and the skin-side nonwoven fabric 12 are folded into pleats in the vertical center of the mask body 10. When the mask 1 is worn, the pleats are spread out in the vertical direction in the horizontal center of the mask body 10. However, on both horizontal sides of the mask body 10, the filter member 11 and the skin-side nonwoven fabric 12 are joined by the welded parts 14 in a pleated state. On both horizontal sides of the mask body 10, the upper and lower ends of the filter member 11 and the skin-side nonwoven fabric 12 are joined by the welded parts 14 in a folded-over state.

[0107] That is, at both left and right sides of the mask body 10, the cross-sectional state shown in Fig. 2 is maintained even when the mask 1 is worn. Specifically, at the top and bottom ends, the skin side nonwoven fabric 12 is overlapped in two layers in the thickness direction by the folded-back portions 101. At the center in the vertical direction, the skin side nonwoven fabric 12 has a portion where it is overlapped in three layers in the thickness direction by the pleats.

[0108] In addition, in the case of the mask 1 having upper and lower folded portions 101, the "upper end" of the mask body 10 is the upper folded portion 101, the "lower end" is the lower folded portion 101, and the "center" is the portion that does not have the folded portion 101 and is the portion between the upper end and the lower end in the vertical direction. In the case of a mask that does not have the folded portion 101 such as the mask 1, the "upper end" is the uppermost portion (a portion that is 1 / 4 the length of the upper half of the upper half) when the length of the mask body 10 in the vertical direction is divided into four equal parts, the "lower end" is the lowermost portion (a portion that is 1 / 4 the length of the lower half of the lower half) when the length of the mask body 10 in the vertical direction is divided into four equal parts, and the "center" is the portion between the upper end and the lower end in the vertical direction. In addition, with regard to 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 divided into four equal parts, the part furthest to one side (the part that is 1 / 4 the length of the left side of the left half) is the "side" of one side, and when the length of the other side (right side) of the mask main body 10 in the left-right direction is divided into four equal parts, the part furthest to the other side (the part that is 1 / 4 the length of the right side of the right half) is the "side" of the other side, and the part between both sides is called the "central part".

[0109] Therefore, by distributing the heat absorbing agent 30 uniformly in the skin side nonwoven fabric 12, the basis weight (g / m2) of the heat absorbing agent 30 is larger in the vertical center where the skin side nonwoven fabric 12 is overlapped in three layers than in the upper and lower ends where the skin side nonwoven fabric 12 is overlapped in two layers. 2 ) can be increased.

[0110] The ear hooks 20 are joined to the upper and lower ends of both sides in the left-right direction of the mask body 10. Therefore, the upper and lower ends are more likely to adhere to the wearer's skin due to the stretching force of the ear hooks 20 than the central part in the up-down direction, and the wearer is more likely to feel the cooling effect of the heat absorbing agent 30. On the other hand, the central part in the up-down direction is close to the wearer's nostrils and mouth, so it is prone to becoming stuffy, but the heat absorbing agent 30 is more likely to come into contact with the wearer's moist breath. Therefore, it is preferable to set the basis weight of the heat absorbing agent 30 as described above. By doing so, on both sides in the left-right direction of the mask body 10, the central part in the up-down direction has a lower degree of adhesion to the wearer's skin, but the wearer's breath comes into contact with more of the heat absorbing agent 30, so the cooling effect is enhanced and the wearer is more likely to feel the cooling sensation. In addition, the central part in the up-down direction of both sides in the left-right direction of the mask body 10 has a lower degree of adhesion than the upper and lower ends, but comes into contact with the wearer's cheeks. Therefore, by increasing the basis weight of the heat absorbing agent 30 in that portion, the wearer can easily feel the cool sensation.

[0111] In addition, when the mask 1 is worn, the pleats are expanded in the vertical direction in the horizontal center of the mask body 10, but are not completely expanded, and the skin side nonwoven fabric 12 overlaps in three layers in some places. Therefore, even in the horizontal center of the mask body 10, the basis weight (g / m 2 ) is increased. Therefore, the wearer's breath comes into contact with a larger amount of the heat absorbing agent 30, enhancing the cooling effect.

[0112] In other words, in the mask 1 having the pleated folds F, the skin side nonwoven fabric 12 can be laminated in three layers in the thickness direction in the vertical center of the mask body 10. Therefore, even if the heat absorbing agent 30 is uniformly distributed in the skin side nonwoven fabric 12, the basis weight of the heat absorbing agent 30 in the vertical center can be made higher than that at the upper and lower ends of the mask body 10. As a result, the cooling effect in the vertical center of the mask 1 can be enhanced.

[0113] 2, the upper and lower ends of the mask body 10 preferably have folded-back portions 101 in which the filter member 11 and the skin-side nonwoven fabric 12 are folded back to the non-skin side. The heat-absorbing agent 30 is preferably disposed on the skin side 102A of the non-folded portion 102 that overlaps with the folded-back portion 101 in the thickness direction, i.e., on the skin side of the skin-side nonwoven fabric 12. Note that the folded-back portion 101 may be such that only the skin-side nonwoven fabric 12 is folded back to the non-skin side.

[0114] By folding the upper and lower ends of the mask body 10 to the non-skin side, the filter member 11 can be prevented from covering the skin-side nonwoven fabric 12 from the skin side at the upper and lower ends of the mask body 10. In other words, the skin-side nonwoven fabric 12 with the heat-absorbing agent 30 disposed thereon can be exposed to the skin side at the upper and lower ends of the mask body 10. Therefore, the endothermic reaction of the heat-absorbing agent 30 occurs at a position close to the wearer, so the wearer can easily feel a cool sensation. In particular, the upper and lower ends of the mask body 10 are more likely to come into contact with the wearer's skin than the central part in the vertical direction, so the wearer can more easily feel a cool sensation.

[0115] In addition, as described above, when the upper end of the mask body 10 is folded back to the non-skin side, it is preferable that the heat absorbing agent 30 is also disposed on the non-skin side (outer side) 101A of the folded-back portion 101 of the upper end, i.e., the non-skin side of the skin-side nonwoven fabric 12.

[0116] Since the wearer's breath is warm, the wearer's breath discharged outside the mask body 10 tends to rise. Therefore, the breath discharged outside the mask body 10 can come into contact with the heat absorbing agent 30 arranged on the non-skin side 101A of the upper end of the mask body 10. Therefore, the temperature near the upper end of the mask body 10 can be lowered, and by arranging the heat absorbing agent 70 on both the skin side and the non-skin side of the mask body 10, the amount of heat absorbing agent 70 in contact with the wearer's skin can be increased, so that the wearer can easily feel a cool sensation. In addition, the temperature of the breath discharged outside the mask body 10 also drops, making it difficult for the wearer's glasses to fog up.

[0117] However, the present invention is not limited to the above configuration. For example, the upper and lower ends of the mask body 10 may be folded back to the skin side, or only one of the upper and lower ends of the mask body 10 may be folded back to the non-skin side. Also, the heat absorbing agent 30 may not be provided on the non-skin side of the upper folded part 101.

[0118] In addition, the ear loops 20 (elastic cords) of the mask 1 of the first embodiment are joined to the non-skin side of the mask body 10 by the joints 16. In this case, the ear loops 20 can be prevented from covering the skin side nonwoven fabric 12 from the skin side. Therefore, the skin side nonwoven fabric 12 with the heat absorbing agent 30 can be placed in a position close to the wearer (exposed to the skin side). Therefore, the heat absorbing reaction of the heat absorbing agent 30 also occurs in the joints 16 of the ear loops 20 in a position close to the wearer, so the wearer can easily feel the coolness. In particular, the part of the skin side nonwoven fabric 12 corresponding to the joints 16 of the ear loops 20 is easily attached to the wearer's skin due to the stretching force of the ear loops 20, so the wearer can easily feel the coolness.

[0119] ==Second embodiment== Fig. 4A is a plan view showing a folded state of a disposable mask 2 (hereinafter also referred to as "mask") of a second embodiment, and Fig. 4B is a front view of the mask 2 in an unfolded state. Fig. 5 is a front view of the mask 2 in a worn state. Fig. 6 is a schematic view of the mask 2 in a worn state as seen from above. Below, the parts of the mask 2 of the second embodiment that are different from the mask 1 of the first embodiment will be mainly described.

[0120] The mask 2 of the second embodiment has a mask body 40 and ear hooks 50. The mask body 40 has up-down and left-right directions when the mask 2 is in an unfolded state and when the mask 2 is worn, and the side facing the wearer is the skin side (skin-facing side), and the opposite side is the non-skin side (non-skin-facing side). The mask body 40 also has a pair of sheet parts 43, 44 that cover the right and left sides of the wearer's face, respectively, a joint 45 that joins the pair of sheet parts 43, 44 to each other, a shape-retaining member 46, and a joint 47 that joins the pair of sheet parts 43, 44 to the ear hooks 50. The joints 45, 47 can be joined by a known method such as welding, squeezing, or adhesive.

[0121] With regard to the left-right direction of the mask main body 40, when the length of one side (left side) is divided into four equal parts, the shortest part of the left-right length of the mask main body 40 is the "end part" on one side (the part that is 1 / 4 of the length of the left side of the left half), and when the length of the other side (right side) of the mask main body 40 is divided into four equal parts, the other side is the "end part" on the other side (the part that is 1 / 4 of the length of the right side of the right half), and the area between both end parts in the left-right direction is called the "central part".

[0122] As shown in Fig. 4A, the pair of sheet parts 43, 44 are overlapped with their skin-facing sides facing each other and joined by a joint 45 along the edges 43a, 44a of the pair of sheet parts 43, 44. The edges 43a, 44a have curved shapes that convex outward. Therefore, when the mask 2 in the folded (flat) state is unfolded so that the pair of sheet parts 43, 44 are separated (Fig. 4B), the mask body 40 has a three-dimensional shape (cup shape) with the skin-facing side recessed.

[0123] Similarly to the mask 1 of the first embodiment, the mask 2 of the second embodiment is a mask intended to be used as a disposable item. As shown in Fig. 6, the mask body 40 (a pair of sheet portions 43, 44) has a filter member 41 that collects at least one of viral droplets and bacterial droplets, and a skin-side nonwoven fabric (nonwoven fabric) 42 that is provided on the skin-facing side of the filter member 41 and has a heat-absorbing agent 30 disposed therein.

[0124] Therefore, when the moist breath of the wearer comes into contact with the heat absorbing agent 30 of the skin side nonwoven fabric 42, the heat absorbing agent 30 undergoes an endothermic reaction, lowering the surface temperature of the mask 2, thereby improving stuffiness inside the mask 2. In particular, the mask 2 of the second embodiment assumes a three-dimensional shape when worn, and spaces are likely to form between the mask 2 and the wearer. Therefore, by lowering the surface temperature of the mask 2 with the heat absorbing agent 30, the wearer is more likely to feel a cool sensation.

[0125] Furthermore, the pair of sheet members 43, 44 each have a shape-retaining member 46 at the upper end between the filter member 41 and the skin-side nonwoven fabric 42. This increases the degree of sealing of the space inside the mask 2, improving the cooling effect and its duration. However, the mask 2 does not necessarily have to have the shape-retaining member 46.

[0126] The pair of sheet members 43, 44 are joined at a joint 45 in a state where they are superimposed on a plane (FIG. 4A). Therefore, as shown in FIG. 6, in the state where the mask 2 is worn, the skin side nonwoven fabric 42 is maintained in a state where two layers are superimposed in the region from the joint 45 to the edges 43a, 44a of the sheet members 43, 44 (i.e., the joint portion of the sheet members 43, 44). Therefore, by distributing the heat absorbing agent 30 uniformly in the skin side nonwoven fabric 42, the region from the joint 45 to the edges 43a, 44a of the sheet members 43, 44 can be made into a high basis weight portion 48 in which the basis weight of the heat absorbing agent 30 is higher than that of the other region. The comparison method of the basis weight of the heat absorbing agent 30 can be performed in the same manner as the above-mentioned comparison method.

[0127] In this way, when the mask 1 is worn (FIG. 5), it is preferable that the left-right central portion 401 of the mask body 40 has a high basis weight portion 48 in which the basis weight of the heat absorbing agent 30 is higher than that of both left-right end portions 402. By doing so, more heat absorbing agent 30 can come into contact with the wearer's breath in the left-right central portion (nostrils and mouth area) of the mask 2, which is prone to becoming stuffy due to the wearer's breath, and the cooling effect is enhanced. Therefore, the surface temperature of the mask 2 is further reduced, the stuffiness inside the mask 2 is improved, and the wearer can easily feel the cooling sensation.

[0128] Furthermore, it is preferable that the high basis weight portion 48 of the heat endothermic agent 30 (i.e., the joint portion of the sheet members 43, 44) where the skin side nonwoven fabric 12 is overlapped in two layers is continuously disposed in the vertical direction from the upper end 40a to the lower end 40b of the mask body 40.

[0129] In the mask 2 of the second embodiment, which assumes a three-dimensional shape (cup-like) when worn, a space is likely to be created between the mask and the wearer at the left-right center of the mask body 40. Therefore, it is preferable to provide the high basis weight portion 48 of the heat endothermic agent 30 long in the vertical direction at the left-right center of the mask body 40. By doing so, the wearer's breath that has accumulated in the space inside the mask 2 can come into contact with more heat endothermic agent 30, enhancing the cooling effect.

[0130] The ear hooks 50 of the mask 2 of the second embodiment are elastic sheets having openings 51 for hanging the ears. The ear hooks 50 are joined to the skin side of the mask body 40 by the joints 47 as shown in FIG. 6. In this case, the skin side of the skin side nonwoven fabric 12 on which the heat absorbing agent 30 is arranged is covered by the ear hooks 50. However, the part of the skin side nonwoven fabric 12 to which the ear hooks 50 are joined has a high degree of adhesion to the wearer's skin due to the stretching force of the ear hooks 50. Therefore, even if the heat absorbing agent 30 is covered by the ear hooks 50, the wearer can feel a cool sensation. In addition, since the heat absorbing agent 30 does not directly touch the wearer's skin in the part that is in close contact with the wearer's skin, irritation to the wearer's skin can be reduced.

[0131] ==Third embodiment== Fig. 7 is a plan view of the disposable mask 3 of the third embodiment as viewed from the non-skin side. Fig. 8 is a plan view of the mask 3 as viewed from the skin side. Fig. 9 is a cross-sectional view of the mask body 10 taken along line II in Fig. 7. Note that Fig. 9 omits the welded parts 14. Each figure shows the mask 3 before use. Some of the configurations of the third embodiment are also applicable to the first embodiment.

[0132] (Basic configuration of Mask 3) Regarding the mask 3, parts common to the configuration of the mask 1 of the first embodiment are given the same reference numerals, etc., and detailed description of the basic configuration of the mask 3 will be omitted. Like the mask 1, the mask 3 has a mask body 10 and ear hooks 20. The mask body 10 has a top-bottom 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 skin surface side, and the opposite outside is also called the non-skin side or non-skin surface side.

[0133] The mask body 10 before use has a rectangular shape that is long in the left-right direction in plan view (FIGS. 7 and 8) seen from the thickness direction. The mask body 10 has a filter member 11, a skin-side nonwoven fabric (nonwoven fabric) 12 provided on the skin-facing side of the filter member 11, and a non-skin-side nonwoven fabric (second nonwoven fabric) 18 provided between the filter member 11 and the skin-side nonwoven fabric 12. In plan view, the filter member 11, the skin-side nonwoven fabric 12, and the non-skin-side nonwoven fabric 18 have approximately the same size and approximately the same shape. As in the first embodiment, the skin-side nonwoven fabric 12 is a nonwoven fabric in which a heat-absorbing agent 30 is disposed.

[0134] As in the first embodiment, the filter member 11 may be, for example, a single seamless nonwoven fabric sheet formed by integrally forming an electret-treated meltblown nonwoven fabric containing polypropylene fibers, which are polyolefin fibers, and an electret-treated spunbond nonwoven fabric containing polypropylene fibers. However, the filter member 11 is not limited to the above, and may not be electret-treated. For example, the filter member 11 may be a so-called nanofilter that has a large number of fine gaps (nano-level gaps and holes) and captures virus droplets and the like through the gaps and holes.

[0135] The non-skin side nonwoven fabric 18 is a nonwoven fabric having a cooling sensation agent 80 disposed therein. The non-skin side nonwoven fabric 18 may be any nonwoven fabric capable of distributing the cooling sensation agent 80, and is not limited to a spunbond nonwoven fabric, but may also be a spunlace nonwoven fabric, an air-through nonwoven fabric, or a needle punch nonwoven fabric. A nonwoven fabric that is pleasant to the touch is preferable, and an example of such a nonwoven fabric is a spunbond nonwoven fabric containing polypropylene fibers.

[0136] The mask 3 is a pleated type in which the filter member 11, the skin side nonwoven fabric 12, and the non-skin side nonwoven fabric 18 are folded in a pleated shape at creases F along the left-right direction in the vertical center of the mask body 10 to form folds. The mask body 10 shown in FIG. 9 has four creases F1 to F4 visible from the non-skin side and four creases F5 to F8 visible from the skin side. The creases F1, F2, F7, and F8 are mountain folds that convex upward, and the creases F3, F4, F5, and F6 are valley folds that convex downward. However, the number and orientation of the creases F are not limited to the configuration exemplified in FIG. 9.

[0137] Before use, the mask 3 maintains a pleated folded shape as shown in FIG. 7 and the like, and the mask body 10 is in a substantially flat state. The pleated folds F1 to F8 allow the mask body 10 to expand in the vertical direction and to protrude in an Ω shape on the non-skin side. Thus, similar to the state in which the diaper 1 of the first embodiment is worn as shown in FIG. 4, the wearer of the mask 3 can expand the mask body 10 in the vertical direction according to the length from the nose to the chin, and the mask body 10 can cover the mouth and nostrils.

[0138] Additionally, the upper end 100X and the lower end 100Y of the mask body 10 have folded-back portions 101 in which the skin-side nonwoven fabric 12 and the non-skin-side nonwoven fabric 18 are folded back to the non-skin side, respectively. In the following description, the portion of the mask body 10 that overlaps with the folded-back portion 101 in the thickness direction is referred to as a non-folded portion 102. The folded-back portions 101 increase the strength of the upper and lower ends of the mask body 10. Additionally, opening of the skin-side nonwoven fabric 12, the non-skin-side nonwoven fabric 18, and the filter member 11 can be suppressed.

[0139] The mask body 10 has welding parts 14 for joining overlapping sheets together, for example, welding parts 14 by heat welding or ultrasonic welding. As shown in FIG. 7 and other figures, a plurality of welding parts 14 for joining the filter member 11, the skin side nonwoven fabric 12, and the non-skin side nonwoven fabric 18 are provided along the vertical direction on both lateral sides of the mask body 10. In addition, a plurality of welding parts 14 for joining the filter member 11, the skin side nonwoven fabric 12, and the non-skin side nonwoven fabric 18 are provided along the horizontal direction on the upper and lower ends and the vertical center of the mask body 10. However, the pattern of the welding parts 14 is not limited to the one exemplified in FIG. 7. In addition, the overlapping members may be joined together by an adhesive (for example, a hot melt adhesive).

[0140] As shown in FIG. 9, at the upper end of the mask body 10, a shape-retaining member 15 is disposed between the folded non-skin side nonwoven fabric 18 in the folded-back portion 101 and the non-folded portion 102.

[0141] The ear hooks 20 are ring-shaped members extending from both sides of the mask body 10 in the left-right direction when worn. The ear hooks 20 are preferably made of a stretchable material, such as rubber bands, stretchable nonwoven fabrics, and stretchable films. Specifically, as shown in FIG. 8, the pair of ear hooks 20 of the mask 3 are made of stretchable nonwoven fabric, and an opening 21 for hanging on the ears is provided in the center in the left-right direction and the up-down direction. In addition, when the mask 3 before use is viewed from the skin side, the ear hooks 20 are provided on both sides in the left-right direction so as to fit into the planar shape of the mask body 10. The ear hooks 20 are joined to the skin side of the mask body 10 at joints 16 located at both ends in the left-right direction. In the ear hooks 20 of the mask 1 of the first embodiment, the rubber bands are joined to the non-skin side of the mask body 10 at the joints 16, but as in the mask 3 of the third embodiment, the ear hooks 20 may be joined to the skin side of the stretchable nonwoven fabric. The joints 16 extend in the up-down direction and join the elastic nonwoven fabric (20) to the mask body 10. Before use, the pair of ear loops 20 are continuous at a connecting portion 22 located at the center in the left-right direction on the skin-facing side of the mask body 10. When wearing the mask, the wearer can wear the mask 3 by hanging each ear loop 20 over both ears by breaking the connecting portion 22. The joining of the joints 16 can be achieved by welding or by using an adhesive.

[0142] (Regarding mask 3 having heat absorbing agent 30 and cooling agent 80) In the mask 3 of this embodiment, the skin side nonwoven fabric 12 provided with the heat absorbing agent 30 and the non-skin side nonwoven fabric 18 provided with the cooling sensation agent 80 are adjacent to each other in the thickness direction, and the non-skin side nonwoven fabric 18 is provided so as to face the non-skin side of the skin side nonwoven fabric 12. As in the first embodiment, the heat absorbing agent 30 is an agent that reacts with water to cause an endothermic reaction, and the cooling sensation agent 80 is an agent that gives the wearer a cool or refreshing sensation when it comes into contact with the wearer's skin.

[0143] The skin-side nonwoven fabric 12 is a layer in which the heat-absorbing agent 30 is disposed in the skin-side nonwoven fabric, and the non-skin-side nonwoven fabric 18 is a layer in which the cooling agent 80 is disposed in the non-skin-side nonwoven fabric. In order to facilitate the retention of moisture contained in the wearer's breath in the skin-side nonwoven fabric 12 and to facilitate the contact of the heat-absorbing agent 30 in the skin-side nonwoven fabric 12 with moisture and to extend the contact time, the skin-side nonwoven fabric 12 preferably contains hydrophilic fibers, and more preferably contains hydrophilic fibers at 50% or more. This makes it easier for the heat-absorbing agent 30 disposed in the hydrophilic nonwoven fabric to undergo an endothermic reaction.

[0144] Examples of hydrophilic fibers include regenerated cellulose fibers such as rayon, natural cellulose fibers such as cotton and crushed pulp, semi-synthetic cellulose fibers such as acetate, etc. Also, hydrophobic fibers (e.g., polyethylene fibers, polypropylene fibers, etc.) may be modified to be hydrophilic by applying a hydrophilic treatment such as coating with a hydrophilic surfactant.

[0145] By providing the mask 3 with the heat absorbing agent 30, the moist breath of the wearer comes into contact with the heat absorbing agent 30, and an endothermic reaction occurs, lowering the surface temperature of the mask 3, thereby improving stuffiness inside the mask 3.

[0146] However, it may take a certain time for the moisture in the wearer's breath to come into contact with the endothermic agent 30, causing an endothermic reaction in the endothermic agent 30 and lowering the surface temperature of the mask 3. Therefore, there is a risk that the wearer may feel stuffy when wearing the mask 3 from the time the wearer puts on the mask 3 until the endothermic reaction lowers the surface temperature of the mask 3.

[0147] In contrast, the mask 3 includes not only the skin-side nonwoven fabric 12 including the heat-absorbing agent 30, but also the non-skin-side nonwoven fabric 18 including a cooling agent 80. The cooling agent 80 of the non-skin-side nonwoven fabric 18 can give the wearer a cooling sensation by contacting the wearer's skin, so that when the mask 3 is worn, the outer peripheral edge of the mask 3 directly contacts the wearer's skin, causing the cooling agent 80 to come into contact with the wearer's skin, or, if the cooling agent 80 is a volatile substance, the volatilized cooling agent 80 comes into contact with the wearer's skin, allowing the wearer to feel the cooling sensation caused by the cooling agent 80. As shown in FIG. 9, in the mask 3, the volatilized cooling agent 80 passes through the skin-side nonwoven fabric 12 provided on the skin-facing side of the non-skin-side nonwoven fabric 18 and reaches the wearer's skin, allowing the wearer to feel the effect of the cooling agent 80.

[0148] That is, when the wearer puts on the mask 3, he / she can first feel a cool sensation or a refreshing sensation due to the cooling agent 80 of the non-skin-side nonwoven fabric 18. Then, he / she can feel the drop in the surface temperature of the mask 3 due to the endothermic reaction of the heat-absorbing agent 30. Therefore, the wearer can feel a cool sensation from the moment he / she puts on the mask 3, which improves stuffiness caused by wearing the mask 3, reduces shortness of breath, and also makes it possible to prevent the occurrence of heat stroke. In addition, the wearer can feel the cooling effect of the cooling agent 80 immediately after putting on the mask 3, and can feel the cooling effect of the heat-absorbing agent 30 after a predetermined time has passed, so that the wearer can get a cooling effect for a longer period of time immediately after putting on the mask 3 than a mask equipped with only the heat-absorbing agent 30 or only the cooling agent 80.

[0149] The cooling agent 80 preferably contains a cooling component that stimulates the cold sensation receptors (temperature-sensitive TRP channels) of the wearer's skin without absorbing heat, thereby making the wearer feel a cold sensation. If necessary, the cooling agent 80 may contain a solvent component that dissolves or disperses the cooling component. Examples of the cooling agent 80 (cooling component) include menthol (e.g., l-menthol, etc.); menthol derivatives (e.g., menthyl lactate, menthyl glyceryl ether, etc.); methyl salicylate; and essential oils derived from plants such as mint and eucalyptus. By using such a cooling agent 80 that stimulates the cold sensation receptors, the wearer can easily feel a cold sensation. It is preferable to use, as the cooling agent 80, a substance that can make the wearer feel a cold sensation caused by the cooling agent 80 faster than the time it takes for the surface temperature of the mask 3 to be reduced by the endothermic reaction of the heat-absorbing agent 30.

[0150] Furthermore, when a sheet of dielectrically polarized nonwoven fabric is used as the filter member 11, it is preferable that the heat absorbing agent 30 and the cooling agent 80 do not contain alcohol in order to prevent the filter member 11, which has a collection function due to electric charge, from losing its collection function due to the adhesion of alcohol. For example, it is preferable that the solvent contained in the heat absorbing agent 30 and the cooling agent 80 is a water-based solvent. Furthermore, for example, when a solution in which an endothermic component is dissolved and dispersed in an alcohol-based solvent is applied to the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18, it is preferable that the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18 are joined to the filter member 11 in the production line for the mask 3 after the alcohol-based solvent has evaporated.

[0151] Moreover, it is preferable that the endothermic agent 30 is a non-volatile substance, and the cooling agent 80 is a volatile substance. The volatile cooling agent 80 makes it easier for the cooling agent 80 to volatilize immediately after the mask 3 is used and provide a cooling sensation or a refreshing sensation to the wearer's skin. On the other hand, the non-volatile endothermic agent 30 does not volatilize before the mask 3 is used, so that the risk of the effect of the endothermic agent 30 being reduced can be reduced. In addition, since the time when the cooling agent 80 exerts its cooling effect and the time when the endothermic agent 30 exerts its cooling effect can be shifted, the wearer can feel the cooling effect for a long time from immediately after putting on the mask 3. The volatile cooling agent 80 is a substance that becomes a gas in a general living environment and has a boiling point of less than 100°C.

[0152] The cooling sensation agent 80 may be liquid or solid (including gel, powder, etc.). Microcapsules containing the liquid cooling sensation agent 80 are disposed in the non-skin-side nonwoven fabric 18 of the mask 3. The membrane material of the microcapsules containing the cooling sensation agent 80 is broken (broken) by physical stimuli such as external pressure (impact, friction), exposing or releasing the cooling sensation agent 80 inside. The membrane material of the microcapsules containing the cooling sensation agent 80 of the mask 3 is urethane resin. The microcapsules in which the cooling sensation agent 80 is contained in the membrane material of the closed microcapsules are also referred to as "cooling sensation agent 80". The cooling sensation agent 80 does not necessarily have to be contained in the microcapsules, and the liquid or solid cooling sensation agent 80 may be directly applied or sprayed on the nonwoven fabric as the non-skin-side nonwoven fabric 18.

[0153] As in the first embodiment, microcapsules containing a liquid endothermic agent 30 are disposed in the skin-side nonwoven fabric 12 of the mask 3. The membrane material of the microcapsules that contain the endothermic agent 30 is broken (broken) by physical stimuli such as external pressure (impact, friction), and the internal endothermic agent 30 is exposed or released. The membrane material of the microcapsules containing the endothermic agent 30 of the mask 3 is urethane resin. The microcapsules in which the endothermic agent 30 is contained in the membrane material of the closed microcapsules are also referred to as "endothermic agent 30". The endothermic agent 30 does not necessarily have to be contained in a microcapsule, and the liquid or solid endothermic agent 30 may be directly applied or sprayed on the nonwoven fabric as the skin-side nonwoven fabric 12.

[0154] The heat absorbing agent 30 and the cooling agent 80 used in the mask 3 are encapsulated in microcapsules with a urethane resin as a film material, but are not limited to this. Any material may be used as long as it has a predetermined strength that allows it to collapse (by impact or friction) due to external pressure (physical stimuli). For example, gelatin, gelatin-gum arabic, melamine resin, urea-formaldehyde resin, etc. may be used. These resins may be used alone or in combination of two or more types of resins. In addition, the microcapsules may be ones that release the heat absorbing agent 30 and the cooling agent 80 by breaking the film material due to physical or chemical stimuli such as heat, light, liquid, etc. By encapsulating the heat absorbing agent 30 and the cooling agent 80 in microcapsules, they are easily retained between the fibers of the nonwoven fabrics of the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18.

[0155] As in the present embodiment, the heat absorbing agent 30 and the cooling agent 80 are encapsulated in microcapsules, so that the liquid or solid heat absorbing agent 30 and the cooling agent 80 applied directly before wearing the mask 3 can be reduced in risk of slipping off the mask 3 or losing due to volatilization of a volatile substance such as the cooling agent 80. When wearing the mask 3, it is preferable that the wearer first lightly taps the entire mask body 10. By tapping, a predetermined physical stimulus (pressure) is applied, and the microcapsules of the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18 are broken (disintegrated), and the encapsulated heat absorbing agent 30 and the cooling agent 80 are exposed to the outside. A wearer who wears the mask 3 with the heat absorbing agent 30 and the cooling agent 80 exposed can easily obtain the effects of the heat absorbing agent 30 and the cooling agent 80. In addition, since the heat absorbing agent 30 and the cooling sensation agent 80 are respectively encapsulated in microcapsule membrane material made of the same material, the wearer can expose the heat absorbing agent 30 and the cooling sensation agent 80 at once by simply tapping the mask 3 before use, making it easier for them to exert their effects.

[0156] The cooling sensation agent 80 can be distributed to the non-skin side nonwoven fabric 18 in the same manner as the heat absorbing agent 30 is distributed to the skin side nonwoven fabric 12. For example, the cooling sensation agent 80 may be kneaded into at least a part of the fibers constituting the non-skin side nonwoven fabric 18. That is, the cooling sensation agent 80 may be disposed in a stage prior to the formation of the non-skin side nonwoven fabric 18 by, for example, impregnating the fiber web prior to the formation of the non-skin side nonwoven fabric 18 with the cooling sensation agent 80 (solution) or mixing the cooling sensation agent 80 with the resin before forming the fibers. Also, a binder mixed with the cooling sensation agent 80 may be applied to the fiber web. By doing so, the cooling sensation agent 80 is less likely to fall off the non-skin side nonwoven fabric 18, the function of the cooling sensation agent 80 is gradually exerted, and the duration of the cooling sensation effect of the cooling sensation agent 80 is increased.

[0157] Without being limited to the above, the cooling sensation agent 80 may be disposed on the surface of the fibers constituting the non-skin side nonwoven fabric 18. For example, the cooling sensation agent 80 may be applied to the non-skin side nonwoven fabric 18 by various known application methods such as a spraying method, a roller coating method, or a brush coating method, or the non-skin side nonwoven fabric 18 may be immersed in the cooling sensation agent 80 (solution).

[0158] The heat absorbing agent 30 may be disposed over the entire area of ​​the skin side nonwoven fabric 12, or may be disposed on only a part of the plane of the skin side nonwoven fabric 12. The heat absorbing agent 30 is applied to the skin side nonwoven fabric 12 with a certain basis weight (amount per unit area: g / m 2 ) or may be arranged with different basis weights depending on the area of ​​the skin side nonwoven fabric 12.

[0159] The cooling sensation agent 80 may be disposed over the entire area of ​​the non-skin side nonwoven fabric 18, or may be disposed on only a part of the plane of the non-skin side nonwoven fabric 18. The cooling sensation agent 80 is applied to the non-skin side nonwoven fabric 18 with a certain basis weight (amount per unit area: g / m 2 ) or may be arranged with different basis weights depending on the area of ​​the skin side nonwoven fabric 12.

[0160] It is also preferable that the skin side nonwoven fabric 12 having the heat absorbing agent 30 disposed therein forms the surface closest to the skin in the mask 3. Specifically, as in the mask body 10 of the mask 3 shown in Fig. 3, it is preferable that the skin side nonwoven fabric 12 is disposed on the surface closest to the skin, the filter member 11 is disposed on the surface closest to the non-skin side, and the non-skin side nonwoven fabric 18 is provided between the skin side nonwoven fabric 12 and the filter member 11.

[0161] As described above, the heat absorbing agent 30 undergoes an endothermic reaction when it comes into contact with the moist breath of the wearer, lowering the surface temperature of the mask. Therefore, by providing the skin-side nonwoven fabric 12 containing the heat absorbing agent 30 on the side closest to the skin of the mask body 10, the heat absorbing agent 30 can easily come into contact with the wearer's breath, enhancing the cooling effect. In addition, since the endothermic reaction can occur at a position close to the wearer's skin, when the surface temperature of the mask 3 drops, the wearer can easily feel a cooling sensation.

[0162] Furthermore, by providing the non-skin side nonwoven fabric 18 between the filter member 11 and the skin side nonwoven fabric 12, the non-skin side nonwoven fabric 18 is sandwiched between the filter member 11 and the skin side nonwoven fabric 12. Therefore, even if the cooling sensation agent 80 is encapsulated in microcapsules and disposed on the non-skin side nonwoven fabric 18, the microcapsules are less likely to fall off the non-skin side nonwoven fabric 18, reducing the risk of the effect of the cooling sensation agent 80 being reduced. Even if the cooling sensation agent 80 is not encapsulated in microcapsules and the cooling sensation agent 80 itself is applied to the non-skin side nonwoven fabric 18 as a liquid, by covering both sides of the non-skin side nonwoven fabric 18 with the filter member 11 and the skin side nonwoven fabric 12, the volatilization of the cooling sensation agent 80 is reduced, reducing the risk of the effect of the cooling sensation agent 80 being reduced.

[0163] Furthermore, it is preferable that the non-skin side of the filter member 11 forms at least a part of the non-skin side of the mask body 10 (mask 3), and the skin side of the skin side nonwoven fabric 12 forms at least a part of the skin side of the mask body 10 (mask 3). By doing so, even in a mask 3 equipped with the filter member 11, the number of sheets laminated in the thickness direction in the mask body 10 can be reduced, and the space inside the mask 3 can be made less likely to become stuffy. It is more preferable that the heat absorbing agent 30 is disposed in a portion that forms at least a part of the skin side of the mask body 10 (mask 3). Since the endothermic reaction by the heat absorbing agent 30 provided in a position close to the wearer's skin is more likely to occur in a position close to the wearer's skin, the wearer is more likely to feel a cooling sensation due to the endothermic reaction.

[0164] However, the configuration of the mask body 10 is not limited to the above, and for example, another sheet may be disposed on the non-skin side of the filter member 11, on the skin side of the skin side nonwoven fabric 12, or between the filter member 11 and the skin side nonwoven fabric 12. Furthermore, the order in which the filter member 11, the skin side nonwoven fabric 12, and the non-skin side nonwoven fabric 18 are layered may be different.

[0165] More preferably, the heat absorbing agent 30 is applied to the skin side of the skin side nonwoven fabric 12. By disposing the heat absorbing agent 30 in a position close to the wearer's skin, the heat absorbing agent 30 is more likely to come into contact with the wearer's breath, which promotes the endothermic reaction and enhances the cooling effect. In addition, since the endothermic reaction occurs in a position close to the wearer's skin, the wearer is more likely to realize that the surface temperature of the mask 3 has dropped. Similarly, the cooling agent 80 is preferably applied to the skin side of the non-skin side nonwoven fabric 18. By disposing the cooling agent 80 on the side close to the wearer's skin, the cooling agent 80 is more likely to come into contact with the wearer's skin, which makes it easier for the wearer to realize the cooling effect of the cooling agent 80. However, the above is not limited, and the heat absorbing agent 30 may be applied to the non-skin side or both sides of the skin side nonwoven fabric 12, and the cooling agent 80 may be applied to the non-skin side or both sides of the non-skin side nonwoven fabric 18.

[0166] In addition, in the case where the other side of the skin-side nonwoven fabric 12 is smoother (has a lower surface roughness) than the one side, it is more preferable to arrange the one side on the non-skin side and the other side on the skin side, and to arrange the other side so as to form at least a part of the skin side of the mask body 10, and to arrange the heat-absorbing agent 30 on the other side (the skin side of the skin-side nonwoven fabric 12 and a part constituting at least a part of the skin side of the mask body 10). In other words, it is preferable that the skin side of the skin-side nonwoven fabric 12 is smoother than the non-skin side, and the smoother side is arranged at a position where it can come into contact with the wearer's skin, and the heat-absorbing agent 30 is arranged on the smooth side that can come into contact with the wearer's skin. In general, the side with higher smoothness (the other side) can have a larger contact area with the wearer's skin than the side with lower smoothness (the one side). Therefore, the smoother skin-side surface can have a larger contact area with the wearer's skin than the non-skin-side surface, so that the mask 3 can have a larger contact area between the heat-absorbing agent 30 provided on the skin-side surface and the wearer's skin, making it easier for the wearer to feel the cooling sensation caused by the heat-absorbing agent 30.

[0167] Examples of indices for comparing the smoothness of the nonwoven fabric 12 include the height of surface irregularities, the standard deviation of the KES surface roughness (SMD), and the mean deviation of the average coefficient of friction (MMD).

[0168] Specifically, an electron microscope can be used to measure the height of the projections and recesses on the cross section of nonwoven fabric 12. When the height of the projections and recesses on the other side (skin side) of nonwoven fabric 12 is lower than the height of the projections and recesses on one side (non-skin side) of nonwoven fabric 12, the other side (skin side) of nonwoven fabric 12 is smoother than the one side (non-skin side) of nonwoven fabric 12.

[0169] The surface roughness mean deviation (SMD) and the surface friction coefficient mean deviation (MMD) can be measured, for example, based on the characteristic value KES manufactured by Kato Tech Co., Ltd., which is generally known as a characteristic value that represents the feel of the surface of the nonwoven fabric 12 (Reference: Standardization and Analysis of Texture Evaluation (2nd Edition), Author: Kawabata Toshio, Published July 10, 1980).

[0170] Specifically, the surface characteristics are measured using a surface testing device (KES-FB4-AUTO-A manufactured by Kato Tech Co., Ltd.) by placing a 1.0 x 1.0 cm area of ​​each sample on a test table with a smooth metal surface. The surface roughness is measured by applying a load of 10 gf to the front (or back) of the sample and crimping a 0.5 cm wide contact terminal wound with a 0.5 mm diameter piano wire to the sample. The surface friction is measured by arranging 10 pieces of piano wire, the same as the contact terminal used in the surface roughness measurement, and crimping the contact surface to the sample with a force of 50 fg using a weight. In the measurement of surface roughness and surface friction, the sample is moved horizontally 2 cm at a constant speed of 0.1 cm / sec, and a uniaxial tension of 20 gf / cm is applied to the sample. From the measurement results, the mean deviation of surface roughness (SMD) and the mean deviation of surface friction coefficient (MMD) are calculated.

[0171] It is preferable that the airflow resistance value of the skin side nonwoven fabric 12 is higher than that of the non-skin side nonwoven fabric 18 (airflow resistance value of skin side nonwoven fabric 12>airflow resistance value of non-skin side nonwoven fabric 18). This makes it easier to retain more of the wearer's breath (exhaled breath) while wearing the mask in the skin side nonwoven fabric 12, which has a higher airflow resistance value, and makes it easier to cause an endothermic reaction between the heat absorbing agent 30 and the wearer's breath, thereby making it easier to lower the surface temperature of the mask 3. The airflow resistance values ​​of the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18 can be measured by known methods. For example, the above-mentioned method for measuring the airflow resistance value of the filter member 11 can be used.

[0172] Furthermore, it is preferable that the airflow resistance value of the filter member 11 is higher than that of the skin side nonwoven fabric 12. In other words, it is more preferable that the airflow resistance value of the filter member 11 is higher than that of the skin side nonwoven fabric 12, and that the airflow resistance value of the skin side nonwoven fabric 12 is higher than that of the non-skin side nonwoven fabric 18 (airflow resistance value of filter member 11>airflow resistance value of skin side nonwoven fabric 12>airflow resistance value of non-skin side nonwoven fabric 18). This makes it easier to promote an endothermic reaction between the wearer's breath, which is appropriately held in the skin side nonwoven fabric 12, and the endothermic agent 30 while maintaining the filter member 11's effect of collecting fine particles such as virus droplets, bacterial droplets, and pollen, and therefore improves the endothermic effect and its duration. In addition, it is possible to reduce the risk of the cooling sensation agent 80 leaking (volatilizing) to the outside through the filter member 11, thereby improving the cooling sensation effect and its duration.

[0173] In addition, in the mask 3, the filter member 11, the skin side nonwoven fabric 12, and the non-skin side nonwoven fabric 18 are folded in a pleated shape at the vertical center of the mask body 10. When the mask 3 is worn, the pleated portion is spread in the vertical direction at the horizontal center of the mask body 10. However, at both horizontal sides of the mask body 10, the filter member 11, the skin side nonwoven fabric 12, and the non-skin side nonwoven fabric 18 are joined by the welded parts 14 in a pleated state. In addition, over the entire horizontal area of ​​the mask body 10, the filter member 11, the skin side nonwoven fabric 12, and the non-skin side nonwoven fabric 18 are joined by the welded parts 14 in a folded-back state at the upper end 100X and the lower end 100Y.

[0174] That is, at both left and right sides of the mask body 10, the cross-sectional state shown in Fig. 9 is maintained even when the mask 3 is worn. Specifically, at the upper and lower ends 100X, 100Y of the mask 3, the folded-back portions 101 cause the skin side nonwoven fabric 12 to overlap in two layers in the thickness direction, and the non-skin side nonwoven fabric 18 to overlap in two layers in the thickness direction. The vertical center has a portion where the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18 each overlap in three layers in the thickness direction due to the pleats.

[0175] In addition, in the case of the mask 3 having the upper and lower folded portions 101, the "upper end 100X" of the mask body 10 is the upper folded portion 101, the "lower end 100Y" is the lower folded portion 101, and the "central portion 100Z" is the portion that does not have the folded portion 101 and is the portion between the upper end 100X and the lower end 100Y in the vertical direction. In the case of a mask that does not have the folded portion 101 such as the mask 3, the uppermost portion (a portion that is 1 / 4 the length of the upper half of the upper half) when the upper half of the mask body 10 in the vertical direction is divided into four is the "upper end", the lowermost portion (a portion that is 1 / 4 the length of the lower half of the lower half) when the lower half of the mask body 10 in the vertical direction is divided into four is the "lower end", and the portion between the upper end and the lower end in the vertical direction is the "central portion". In addition, with regard to 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 divided into four equal parts, the part furthest to one side (the part that is 1 / 4 the length of the left side of the left half) is the "side" of one side, and when the length of the other side (right side) of the mask main body 10 in the left-right direction is divided into four equal parts, the part furthest to the other side (the part that is 1 / 4 the length of the right side of the right half) is the "side" of the other side, and the part between both sides is called the "central part".

[0176] In addition, in the mask 3 having such pleated folds F, when the mask body 10 is formed, the heat absorbing agent 30 is uniformly distributed over the entire area of ​​the skin side nonwoven fabric 12, and then the folds F are formed. As a result, the basis weight (g / m 2 ) of the heat absorbing agent 30 is larger in the vertical center portion 100Z of the skin side nonwoven fabric 12, where the skin side nonwoven fabric 12 overlaps in three layers, than in the upper and lower end portions 100X, 100Y, where the skin side nonwoven fabric 12 overlaps in two layers. 2 ) is higher, the central portion 100Z has a portion with a higher basis weight of the heat absorbing agent 30 than the upper and lower end portions 100X, 100Y. Specifically, as shown in Fig. 9, the portion H of the mask body 10 before use where the skin side nonwoven fabric 12 of the mask body 10 overlaps in three layers has a higher basis weight of the heat absorbing agent 30 than the upper and lower end portions 100X, 100Y.

[0177] This allows the cooling effect of the central portion 100Z to be enhanced in the vertical direction of the entire mask body 10, compared to the upper and lower ends 100X and 100Y. When the mask 3 is worn, the pleats are expanded in the vertical direction in the central portion of the mask body 10 in the horizontal direction, but are not completely expanded, and the skin-side nonwoven fabric 12 overlaps in three layers in a part, and the portion H with a high basis weight of the heat absorbing agent 30 is maintained. In addition, when worn, the central portion 100Z in the vertical direction of the mask body 10 is close to the wearer's nostrils and mouth, so that the wearer's breath is more likely to come into contact with the heat absorbing agent 30, making it easier for the wearer to feel the cooling effect of the heat absorbing agent 30. Therefore, by increasing the basis weight of the heat absorbing agent 30 arranged in that portion, the wearer can more easily obtain the cooling effect of the heat absorbing agent 30.

[0178] Furthermore, by distributing the cooling sensation agent 80 uniformly over the entire area of ​​the non-skin side nonwoven fabric 18 and forming the pleated folds F, the basis weight (g / m 2 ) of the cooling sensation agent 80 is smaller in the vertical center portion 100Z of the non-skin side nonwoven fabric 18 where the non-skin side nonwoven fabric 18 overlaps in three layers than in the upper and lower end portions 100X, 100Y where the non-skin side nonwoven fabric 18 overlaps in two layers. 2 ) is higher, the central portion 100Z has a portion with a higher basis weight of the cooling sensation agent 80 than the upper and lower end portions 100X, 100Y. Specifically, as shown in Fig. 9, the portion H of the mask body 10 before use where the non-skin side nonwoven fabric 18 overlaps in three layers is a portion with a higher basis weight of the cooling sensation agent 80 than the upper and lower end portions 100X, 100Y. Even when the mask 3 is worn, the pleats are spread out in the vertical direction in the central portion of the mask body 10 in the left-right direction, but are not spread out completely, and in some parts the non-skin side nonwoven fabric 18 overlaps in three layers, maintaining the portion H with a high basis weight of the cooling sensation agent 80.

[0179] The cooling effect of the central portion 100Z can be further enhanced by providing a portion having a higher basis weight of the cooling agent 80 than the upper and lower end portions 100X, 100Y in addition to the heat-absorbing agent 30. The wearer can easily feel the effect of the cooling agent 80 in the central portion 100Z near the nostrils and mouth, and can easily feel the cooling effect of the mask 3.

[0180] In addition, in the mask 3 having such pleated folds F, it is preferable that the central portion 100Z in the vertical direction of the skin side nonwoven fabric 12 has a portion with a higher basis weight of the heat absorbing agent 30 than the upper and lower ends 100X and 100Y in order to make it easier to cause an endothermic reaction and to enhance the cooling effect in the central portion 100Z in the vertical direction near the wearer's nostrils and mouth. For example, the skin side nonwoven fabric 12 may have a configuration in which the heat absorbing agent 30 is disposed in the central portion 100Z and not disposed in the upper and lower ends 100X and 100Y. As a result, the basis weight of the heat absorbing agent 30 is higher in the central portion 100Z of the skin side nonwoven fabric 12 than in the upper and lower ends 100X and 100Y. Furthermore, due to the multiple folds F, the portion where the skin side nonwoven fabric 12 is overlapped in three layers has a higher basis weight of the heat absorbing agent 30 than the portion where the skin side nonwoven fabric 12 is in one layer or in the portion where the skin side nonwoven fabric 12 is in two layers.

[0181] As described above, even when the mask 3 is worn, both sides of the mask body 10 in the left-right direction having the pleated folds F have the skin-side nonwoven fabric 12 overlapped in two layers in the thickness direction at the upper and lower ends 100X, 100Y of the mask 3 by the fold-back parts 101 due to the welding parts 14, and the central part 100Z in the vertical direction has a portion where the skin-side nonwoven fabric 12 overlaps in three layers in the thickness direction due to the pleats (FIG. 9). Therefore, when the heat-absorbing agent 30 is uniformly distributed over the entire area of ​​the skin-side nonwoven fabric 12 and the folds F are formed, the basis weight (g / m2) of the heat-absorbing agent 30 in the central part 100Z in the vertical direction where the skin-side nonwoven fabric 12 overlaps in three layers is larger at both sides of the mask body 10 than at the upper and lower ends 100X, 100Y where the skin-side nonwoven fabric 12 overlaps in two layers. 2 ) is the higher part (Figure 9).

[0182] The left and right sides of the mask body 10 when worn are in contact with or close to the cheeks of the wearer. In the parts in contact with or close to the cheeks of the wearer, the basis weight of the heat absorbing agent 30 in the central part 100Z near the nostrils and mouth of the wearer is made higher than the basis weight of the heat absorbing agent 30 in the upper and lower ends 100X and 100Y, so that the wearer can easily feel the coolness of the mask in the central part 100Z near the nostrils and mouth of the wearer on the cheeks. In particular, the ear hooks 20 are joined to both left and right sides of the mask body 10. Therefore, the left and right sides of the mask body 10 are easily attached to the skin (cheeks) of the wearer due to the stretching force of the ear hooks 20, and the wearer can easily feel the cooling effect of the heat absorbing agent 30.

[0183] Similarly, when the cooling sensation agent 80 is uniformly distributed over the entire area of ​​the non-skin side nonwoven fabric 18 and the folded portion F is formed, the basis weight (g / m 2 ) of the cooling sensation agent 80 is larger in the vertical center portion 100Z where the non-skin side nonwoven fabric 18 is overlapped in three layers than in the upper and lower ends 100X, 100Y where the non-skin side nonwoven fabric 18 is overlapped in two layers on both sides of the mask body 10 in the left-right direction. 2 That is, the portion H where the non-skin side nonwoven fabric 18 of the mask body 10 before use overlaps in three layers has a higher basis weight of the cooling agent 80 than the upper and lower ends 100X, 100Y (FIG. 9).

[0184] In this way, on both sides of the mask body 10 in the left-right direction, not only the heat absorption agent 30 but also the central portion 100Z has a portion with a basis weight higher than that of the heat absorption agent 30 arranged at the upper and lower ends 100X, 100Y. This makes it easier to obtain the cooling effect of not only the heat absorption agent 30 but also the cooling agent 80 in the central portion 100Z near the nostrils and mouth in the portion in contact with or adjacent to the cheek of the wearer, making it easier to feel the cooling effect of the mask 3.

[0185] Furthermore, both ends in the left and right direction of the mask body 10 are in contact with the cheeks of the wearer and come close to the skin of the wearer, and are the parts where the wearer can easily get a cooling effect from the heat absorbing agent 30. Therefore, the basis weight (g / m2) of the heat absorbing agent 30 at both ends in the left and right direction of the mask body 10 is set to 100%. 2) has a part higher than the central part in the left-right direction, the wearer can easily obtain the cooling effect of the heat absorbing agent 30. As a method of providing parts of the heat absorbing agent 30 with a higher basis weight at both left-right sides than at the central part in the left-right direction, for example, more heat absorbing agent 30 may be provided at both left-right sides and less heat absorbing agent 30 (or no heat absorbing agent 30) may be provided at the central part in the left-right direction than at both ends. In addition, the mask 3 may include a filter member 11, a skin-side nonwoven fabric 12, and a non-skin-side nonwoven fabric 18, and further includes side sheets (not shown) provided to sandwich both left-right sides of the mask body 10 from the skin side and non-skin side, and further heat absorbing agent 30 may be provided on the side sheets. The side sheets are preferably sheets with good breathability and texture, and examples of such sheets include melt-blown nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, and air-through nonwoven fabric.

[0186] It is possible to confirm by a known method whether the heat absorbing agent 30 and the cooling agent 80 are disposed in the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18, respectively. First, the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18 to be measured are removed from the mask 3, and samples of a predetermined size are formed. The samples are subjected to component analysis using, for example, a gas chromatography device (Agilent 7890B or an equivalent device), thereby confirming whether the samples of the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18 contain the heat absorbing agent 30 and the cooling agent 80, respectively. When the heat absorbing agent 30 and the cooling agent 80 are contained in microcapsules, the presence or absence of the microcapsules (heat absorbing agent 30 and cooling agent 80) can be confirmed by observing the samples of the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18 under an electron microscope.

[0187] In addition, the basis weight (g / m) of the cooling agent 80 at the upper and lower ends 100X, 100Y and the center portion 100Z of the non-skin side nonwoven fabric 18 2 ), and the basis weight (g / m 2 ) of the heat-absorbing agent 30 at the upper and lower ends 100X, 100Y and the center portion 100Z of the skin-side nonwoven fabric 12. 2 ) can also be compared using the above gas chromatography device. (1) First, the skin side nonwoven fabric 12 to be measured is removed from the mask 3 and separated 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 of a predetermined size (e.g., vertical x horizontal = 20 mm x 40 mm, etc.). (2) Next, the finely cut sample is immersed in a specific solvent, etc. to dissolve the microcapsules, and a mixture of the endothermic agent 30 (the component with a cooling effect) and other components (solvent, etc.) is extracted from the sample. (3) The mixture extracted for each sample is subjected to component analysis using a gas chromatography device. Then, for each sample, the peak value of the endothermic agent (the component with a cooling effect) and the peak values ​​of the other components (solvent, etc.) are obtained, and the ratio of the peak value of the endothermic agent to the peak values ​​of the other components (peak value of endothermic agent / peak value of other components) is calculated. This ratio corresponds to the amount of endothermic agent provided in the sample. (4) Finally, by calculating the average value of the proportion of endothermic agent (peak value of endothermic agent / peak value of other components ≒ amount of endothermic agent 30) of each of the multiple samples constituting the upper end portion 100X, the lower end portion 100Y, and the central portion 100Z, the average value can be calculated as equivalent to the basis weight of the endothermic agent 30 in the upper end portion 100X, the lower end portion 100Y, and the central portion 100Z, and compared. Furthermore, when the heat absorbing agent 80 is encapsulated in microcapsules or not, samples of a predetermined size are cut out from the portions of the non-skin side nonwoven fabric 18 to be compared, the heat absorbing agent 30 is removed from the cut-out samples, the weight difference before and after removing the heat absorbing agent 30 is calculated, and the differences are compared to compare the differences as the difference in basis weight of the heat absorbing agent 30 of each sample. For example, when the heat absorbing agent 30 is encapsulated in microcapsules, samples of a predetermined size are cut out from the portions of the non-skin side nonwoven fabric 18 to be compared, the weight of each sample is measured in a dry state, the microcapsules are dropped by a fluid (water flow or wind flow), the weight of each sample is measured again in a dry state, the weight of each sample is calculated before and after dropping the microcapsules, and the differences are compared to compare the differences as the basis weight of the heat absorbing agent 30 of each sample. The basis weight (g / m) of the cooling agent 80 in the upper and lower ends 100X, 100Y and the central portion 100Z of the non-skin side nonwoven fabric 18 is 2 ) comparison is similar.

[0188] In addition, it was confirmed that the heat absorbing agent 30 was disposed in the skin side nonwoven fabric 12 of the mask 1 of the first embodiment, and the basis weight (g / m2) of the heat absorbing agent 30 in the upper and lower end portions and the center portion of the skin side nonwoven fabric 12 was 2 ) may be compared in a similar manner.

[0189] 9, in the folded-back portion 101, it is preferable that the vertical length 18X (18Y) of the non-skin side nonwoven fabric 18 is shorter than the vertical length 12X (12Y) of the skin side nonwoven fabric 12 (18X<12X, 18Y<12Y). When the cooling agent 80 is encapsulated in microcapsules as in the mask 3, the skin side nonwoven fabric 12 covers the non-skin side of the non-skin side in the folded-back portion 101, and the skin side nonwoven fabric 12 covers the non-skin side nonwoven fabric 18 from both sides in the thickness direction, so that it is possible to reduce the risk that the microcapsules encapsulating the cooling agent 80 will fall off or be damaged before the mask 3 is used. Furthermore, when the volatile cooling sensation agent 80 is not encapsulated in microcapsules but is disposed in liquid or solid form in the non-skin side nonwoven fabric 18, the cooling sensation agent 80 in the non-skin side nonwoven fabric 18 can be covered by the skin side nonwoven fabric 12, thereby reducing the risk of the cooling sensation agent 80 in the non-skin side nonwoven fabric 18 volatilizing.

[0190] However, the present invention is not limited to the above configuration. For example, the upper and lower ends of the mask body 10 may be folded back to the skin side, or only one of the upper and lower ends of the mask body 10 may be folded back to the non-skin side. Also, the heat absorbing agent 30 may not be provided on the non-skin side of the upper folded part 101.

[0191] In the mask 3 of this embodiment, the upper and lower ends of the skin-side nonwoven fabric 12 and the non-skin-side nonwoven fabric 18 are folded back to the non-skin side to form the folded-back portion 101, but this is not limited to the above. At least one of the skin-side nonwoven fabric 12 or the non-skin-side nonwoven fabric 18 may be folded back to the non-skin side. For example, only the skin-side nonwoven fabric 12 may be folded back to the non-skin side, and the heat absorbing agent 30 may be disposed on the skin side 102A (the skin side surface of the skin-side nonwoven fabric 12) of the non-folded portion 102 that overlaps with the folded-back portion 101 in the thickness direction, and the non-skin-side nonwoven fabric 18 may not be folded back to the non-skin side. Furthermore, in addition to the skin-side nonwoven fabric 12 and the non-skin-side nonwoven fabric 18, the filter member 11 may also be folded back. The folded-back portion 101 is not limited to the portion folded back from the skin side to the non-skin side, but may be the portion folded back from the non-skin side to the skin side. Neither the skin-side nonwoven fabric 12 nor the non-skin-side nonwoven fabric 18 may be folded back toward the non-skin side or toward the skin side. Similarly, in the mask 1 of the first embodiment, the filter member 11 may not be folded back toward the non-skin side, and only the skin-side nonwoven fabric 12 may be folded back toward the non-skin side to form the folded-back portion 101. By folding back only the skin-side nonwoven fabric 12, it is possible to prevent the filter member 11 from directly touching the wearer's skin, while reducing the risk that the upper and lower ends of the mask body 10 will become excessively stiff.

[0192] As shown in FIG. 7 and other figures, the mask 3 preferably has a shape-retaining member 15. The shape-retaining member 15 makes it difficult for gaps to form between the mask 3 and the wearer (face), and increases the degree of sealing of the space inside the mask 3. This makes it easier to keep the heat-absorbing agent 30 and the cooling agent 80 inside the space of the mask 3, thereby enhancing the cooling effect of the heat-absorbing agent 30 and the cooling agent 80, and also increases the contact time and circulation of the wearer's breath and the heat-absorbing agent 30, thereby enhancing the cooling effect and its duration. However, this is not limited to the above, and the mask 3 does not necessarily have to have a shape-retaining member 15.

[0193] In addition, in the mask body 10, it is preferable that the outer peripheral edge of the filter member 11 coincides with the outer peripheral edges of the skin side nonwoven fabric 12 and the non-skin side nonwoven fabric 18. In the mask 3 of this embodiment, as shown in Fig. 1 etc., the left end 11c of the filter member 11 coincides with the left end 12c of the skin side nonwoven fabric 12 coincides with the left end 18c of the non-skin side nonwoven fabric 18, and the right end 11d of the filter member 11 coincides with the right end 12d of the skin side nonwoven fabric 12 coincides with the right end 18d of the non-skin side nonwoven fabric 18. In addition, as shown in Fig. 3, the upper end 11a of the filter member 11 coincides with the upper end 12a of the skin side nonwoven fabric 12 and the upper end 18a of the non-skin side nonwoven fabric 18, and the lower end 11b of the filter member 11 coincides with the lower end 12b of the skin side nonwoven fabric 12 coincides with the lower end 18b of the non-skin side nonwoven fabric. Note that this does not include misalignment by the thickness of the sheet of the upper and lower folded portions 101. This allows the heat-absorbing agent 30 and the cooling agent 80 to be distributed over a wide range of the plane of the mask body 10, allowing the wearer to feel the coolness of the mask 3 over a wide range of the mask 3. In addition, the filter member 11 can be distributed over a wide range of the plane of the mask body 10, providing a collection effect. However, this is not limited to the above, and the outer circumferential edge of the filter member 11 may be misaligned with the outer circumferential edge of the skin side nonwoven fabric 12 and the outer circumferential edge of the non-skin side nonwoven fabric 18.

[0194] Moreover, it is preferable that the filter member 11 has a lower basis weight of the heat absorbing agent 30 and the cooling sensation agent 80 than the skin side nonwoven fabric 12, and more preferably, the filter member 11 does not include the heat absorbing agent 30 and the cooling sensation agent 80. This makes it possible to prevent the collection function of the filter member 11 from being reduced due to the heat absorbing agent 30 and the cooling sensation agent 80 adhering to the filter member 11.

[0195] The mask 3 of the present embodiment has the mask body 10 in which the filter member 11, the skin side nonwoven fabric 12, and the non-skin side nonwoven fabric 18 are joined in the thickness direction, but is not limited to this. For example, the filter member 11, the skin side nonwoven fabric 12, and the non-skin side nonwoven fabric 18 may be overlapped with another member in the thickness direction.

[0196] ===Other embodiments=== Although the embodiment of the present invention has been described above, the above embodiment is intended to facilitate understanding of the present invention and is not intended to limit the present invention. Furthermore, the present invention may be modified or improved without departing from the spirit of the present invention, and it goes without saying that the present invention includes equivalents thereof.

[0197] The mask of the present invention may not include a fragrance generating body that dissolves in water to generate a fragrance. Even if the mask does not include a fragrance generating body that dissolves in water to generate a fragrance, the mask can have a nonwoven fabric with a heat absorbing agent disposed therein, so that the wearer can feel the cool sensation of the mask. [Explanation of symbols]

[0198] 1, 2, 3 (disposable) masks, 10 mask body, 11 filter member, 12 skin-side nonwoven fabric (nonwoven fabric), 13 side sheet, 14 welded portion, 15 shape retaining member, 16 joint portion, 18 Non-skin side nonwoven fabric (second nonwoven fabric), 20 Ear hook, 30 Endothermic agent, 40 mask body, 41 filter member, 42 skin-side nonwoven fabric (nonwoven fabric), 43, 44: a pair of sheet portions; 45: a joint portion; 46: a shape retaining member; 47 joint part, 48 high basis weight part, 50 ear hook, 80 Cooling Agent

Claims

1. A disposable mask having a mask body part and ear loops to be worn on the ears of the wearer, wherein the mask body part has a filter member that collects at least one of virus droplets and bacteria droplets, and a non-woven fabric provided on the skin side of the filter member and having a heat absorbent disposed thereon, and the mask body part has an up-down direction and a left-right direction, in the central part in the up-down direction, the filter member and the non-woven fabric are folded into pleats by a fold line along the left-right direction, on both side parts in the left-right direction of the mask body part, the filter member and the non-woven fabric are joined in a state of being folded into the pleats, a disposable mask, characterized in that on both side parts in the left-right direction of the mask body part, the basis weight of the heat absorbent is higher in the central part in the up-down direction than at the end parts in the up-down direction.

2. The disposable mask according to claim 1, wherein the heat absorbent contains any one of sugar alcohols and saccharides, characterized as a disposable mask.

3. The disposable mask according to claim 1 or 2, wherein the non-skin side surface of the filter member forms at least a part of the non-skin side surface of the mask body part, and the skin side surface of the non-woven fabric forms at least a part of the skin side surface of the mask body part, characterized as a disposable mask.

4. The disposable mask according to claim 3, wherein the heat absorbent is disposed in a part that forms at least a part of the skin side surface of the mask body part, characterized as a disposable mask.

5. The disposable mask according to any one of claims 1 to 4, wherein the filter member is a sheet in which a non-woven fabric made of polyolefin-based fibers is dielectrically polarized, and the heat absorbent does not contain alcohol, characterized as a disposable mask.

6. The disposable mask according to any one of claims 1 to 5, wherein the heat absorbent is non-volatile, characterized as a disposable mask.

7. The disposable mask according to any one of claims 1 to 6, wherein the outer peripheral end of the filter member coincides with the outer peripheral end of the non-woven fabric, characterized as a disposable mask.

8. The disposable mask according to any one of claims 1 to 7, wherein the filter member has a lower basis weight of the heat absorbent than the non-woven fabric, characterized as a disposable mask.

9. The disposable mask according to claim 8, wherein the heat-absorbing agent is not disposed on the filter member, which is a disposable mask. **Claim 10** The disposable mask according to any one of claims 1 to 9, wherein the mask body portion has an up-down direction and a left-right direction, in the central portion in the up-down direction, the filter member and the non-woven fabric are folded into pleats by a fold line along the left-right direction, on both side portions in the left-right direction of the mask body portion, the filter member and the non-woven fabric are joined in a state of being folded into the pleats, and the central portion in the up-down direction has a portion where the basis weight of the heat-absorbing agent in the mask body portion is higher than that of the end portions in the up-down direction, which is a disposable mask. **Claim 11** The disposable mask according to any one of claims 1 to 10, wherein the mask body portion has an up-down direction and a left-right direction, in the central portion in the up-down direction, the filter member and the non-woven fabric are folded into pleats by a fold line along the left-right direction, on both side portions in the left-right direction of the mask body portion, the filter member and the non-woven fabric are joined in a state of being folded into the pleats, the heat-absorbing agent is disposed over the entire area of the non-woven fabric of the mask body portion, and the central portion in the up-down direction has a portion where the basis weight of the heat-absorbing agent in the mask body portion is higher than that of the end portions in the up-down direction, which is a disposable mask. **Claim 12** The disposable mask according to any one of claims 1 to 11, wherein the mask body portion has an up-down direction, a left-right direction, and a thickness direction, at least one of the upper end portion and the lower end portion of the mask body portion has a folded-back portion where the non-woven fabric is folded back to the non-skin side, in the non-folded-back portion of the mask body portion that overlaps with the folded-back portion in the thickness direction, the heat-absorbing agent is disposed on the skin side surface of the non-woven fabric, which is a disposable mask. **Claim 13** The disposable mask according to claim 12, wherein the upper end portion of the mask body portion has the folded-back portion, and the heat-absorbing agent is disposed on the non-skin side surface of the non-woven fabric in the folded-back portion, which is a disposable mask. **Claim 14** A disposable mask having a mask body portion and ear-hanging portions to be hung on the ears of a wearer, wherein the mask body portion has a filter member for collecting at least one of virus droplets and bacteria droplets, It is provided on the skin side of the filter member and has a non-woven fabric in which a heat absorbent is arranged, and has The mask body portion has a pair of sheet portions that respectively cover the right and left faces of the wearer, and a joining portion that joins the pair of sheet portions. In the deployed state of the disposable mask, The mask body portion has an up-down direction and a left-right direction. The central portion of the mask body portion in the left-right direction has a high basis weight portion where the basis weight of the heat absorbent is higher than that at both ends in the left-right direction. The disposable mask is characterized in that the high basis weight portion is continuously arranged in the up-down direction from the upper end to the lower end of the mask body portion.

15. The disposable mask according to any one of Claims 1 to 14, The disposable mask is characterized in that the ear loops are joined to the skin side surface of the mask body portion.

16. The disposable mask according to any one of Claims 1 to 15, The disposable mask is characterized in that the heat absorbent is kneaded into at least a part of the fibers constituting the non-woven fabric.

17. The disposable mask according to any one of Claims 1 to 15, The disposable mask is characterized in that the heat absorbent is applied to the skin side surface of the non-woven fabric.

18. The disposable mask according to any one of Claims 1 to 17, The disposable mask is characterized in that the non-woven fabric contains hydrophilic fibers.

19. The disposable mask according to any one of Claims 1 to 18, The disposable mask is characterized in that the air permeability resistance value of the filter member is 0.45 kPa·s / m or less.

20. A disposable mask having a mask body portion and ear loops that are hung on the ears of the wearer, The mask body portion has a filter member that collects at least one of virus droplets and bacteria droplets, and a non-woven fabric that is provided on the skin side of the filter member and in which a heat absorbent is arranged, and has The mask body portion has an up-down direction and a left-right direction, The disposable mask is characterized in that both side portions in the left-right direction have portions where the basis weight of the heat absorbent of the mask body portion is higher than that at the central portion in the left-right direction.

21. The disposable mask according to any one of Claims 1 to 20, The mask body portion has a second non-woven fabric provided so as to face one side or the other side in the thickness direction of the non-woven fabric. A disposable mask, characterized in that a cooling agent is disposed on the second non-woven fabric.

22. A disposable mask according to any one of Claims 1 to 21, wherein the non-woven fabric has one side surface that is smoother than the other 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. A disposable mask characterized by this.

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