JP2022018011A - mask - Google Patents

Abstract

To provide an easy-to-use mask.SOLUTION: A mask 10 comprises: a mask part 10A having a mask body 12 which covers the mouth of a wearer and ear hooking parts 14 continuous with the side portions of the mask body 12; and a strap 16 whose both ends are formed in a belt-like shape connected to edges of the mask part 10A and which can form a space where the head passes between the strap 16 and the mask part 10A. In the mask 10, the mask part 10A and the strap 16 are made of a single flexible sheet S.SELECTED DRAWING: Figure 1

Description

The present invention relates to a mask.

Various masks have been conventionally proposed for pollen, hygiene, dustproof, and the like. For example, like the mask of Patent Document 1, there is a mask in which string-shaped ear hooks are attached to both sides of a rectangular mask main body made of a non-woven fabric or the like.

Japanese Unexamined Patent Publication No. 2014-198165

The mask is removed and put on again as needed, such as eating and drinking and preventing stuffiness. When the mask is removed, it is difficult to place the mask, and depending on the place, it may not be hygienic. As described above, there is a difficulty in usability when attaching and detaching the mask.

The present invention has been proposed in view of the above-mentioned problems related to the prior art, and an object thereof is to provide an easy-to-use mask.

In order to overcome the above-mentioned problems and achieve the intended purpose, the mask according to the present invention is used.
A mask body that covers the wearer's mouth, a mask part that has an ear hook that is connected to the side of the mask body, and a mask part.
It is provided with a strap, which is formed in a band shape in which both ends are connected to the edge of the mask portion and can form a space through which the head passes between the mask portion.
The gist is that the mask portion and the strap are made of one flexible sheet.

In order to overcome the above-mentioned problems and achieve the intended purpose, another mask according to the present invention may be used.
It consists of two mask halves, each of which has a half body that covers half of the mask body covering the wearer's mouth and an ear hook that is connected to one side of the hem, and the other side of the hem. And the mask portion that constitutes the mask body portion by joining each other
It comprises a band-shaped strap half body, one end of which is connected to the edge of the mask half body.
The mask half and the strap half are composed of one flexible sheet.
The gist is that the strap is configured by joining the other ends of the strap halves connected to the separate mask halves to each other and has a strap capable of forming a space through which the head passes between the strap halves. ..

According to the mask according to the present invention, it is easy to use because it can be hung around the neck when it is removed.

It is a perspective view which shows the mask which concerns on Embodiment 1 of this invention in the wearing state. It is a perspective view which shows the mask of Embodiment 1 in the neck-hanging state. It is a front view which shows the mask of Embodiment 1. FIG. It is a perspective view which shows the mask of Embodiment 2. It is a front view which shows the mask of Embodiment 2. It is a side view which shows the mask of Embodiment 2 in a folded state. It is explanatory drawing which shows the manufacturing process of the mask of Embodiment 2. It is a front view which shows the mask of Embodiment 3. It is a front view which shows the mask of a reference example. It is a perspective view which shows the mask of Embodiment 4. FIG. It is explanatory drawing which shows the manufacturing process of the mask of Embodiment 4. It is a front view which shows the mask of the modification example.

Next, the mask according to the present invention will be described below with reference to the accompanying drawings with reference to suitable examples. In the following description, the wearer's side when wearing the mask may be referred to as the back side, and the side opposite to the wearer may be referred to as the front side.

(Embodiment 1)
As shown in FIGS. 1 to 3, the mask 10 according to the first embodiment has an ear hook provided on both side portions of the mask main body portion 12 that covers a part of the face including the mouth and the mask main body portion 12. The mask portion 10A is configured by the portion 14. Further, the mask 10 has a strap 16 which is formed in a band shape in which both ends are connected to the mask portion 10A and can form a space through which the head passes between the mask portion 10A and the mask portion 10A. The mask 10 can be hung on the strap 16 by passing the head between the mask portion 10A and the strap 16. In the mask 10, the strap 16 hangs from the mask portion 10A to the back of the neck when the mask 10 is worn by hooking the left and right ear hook portions 14 and 14 on the ears, respectively (see FIG. 1). Further, the mask 10 can hold the mask portion 10A at the chest by the strap 16 hooked on the back of the neck in the removed state in which the left and right ear hook portions 14 and 14 are removed from the ears, respectively (see FIG. 2). ).

As shown in FIG. 1, in the mask 10 of the first embodiment, the mask main body portion 12 has a size capable of covering the central part of the face from the wearer's nostrils to the chin through the nostrils and the mouth, and both the left and right cheeks. It is set. Further, the mask 10 is provided with ear hook portions 14 having ear hook holes 14a for hooking on the ears when worn, which are connected to both left and right edges of the mask main body portion 12. In the mask 10, the mask portion 10A and the strap 16 are integrally formed. As described above, the entire mask 10 including the mask main body portion 12, the left and right ear hook portions 14, and the strap 16 is composed of a single sheet S (see FIG. 3).

As shown in FIG. 3, the right end of the strap 16 is connected to the right ear hook portion 14, and the left end is connected to the left ear hook portion 14. Here, it is preferable that the end of the strap 16 is connected to the side end (outermost portion in the left-right direction) of the ear hook portion 14 or its vicinity thereof, because the length of the strap 16 in the left-right direction can be increased. In the first embodiment, the end of the strap 16 is in the vicinity of the side end of the ear hook portion 14 and is connected to a portion below the side end.

As shown in FIG. 3, the strap 16 is formed so as to extend along the edge of the mask portion 10A. In the first embodiment, the strap 16 is formed so as to extend from the lower edge of the ear hook portion 14 along the lower edge of the mask main body portion 12 with the linear cut 18 interposed therebetween.

As the sheet S constituting the mask 10, a flexible polyurethane foam, a cloth such as gauze, a non-woven fabric, or the like can be used alone or in combination (laminated). Among these, a single layer made of flexible polyurethane foam (Embodiment 1) or a laminated body containing at least a flexible polyurethane foam layer is used because it can secure appropriate breathability and is excellent in flexibility and elasticity. Is preferable.

The flexible polyurethane foam may be either a polyether type or a polyester type. As the flexible polyurethane foam, those obtained by slab molding, extraction method or other molding method can be used. In addition, the flexible polyurethane foam is a film-removed product in which the cell wall (membrane) between adjacent bubbles is removed to form only the skeleton, or a communication structure in which each cell wall (membrane) has a hole. And semi-communication structures can be used. The membrane-removed product can be obtained by a known membrane-removing treatment, for example, a method of dissolving the cell wall with a solvent, a method of destroying the cell wall by an explosion, or the like.

The number of cells (JIS K640-1: 2004 Annex 1 (reference)) of the flexible polyurethane foam is in the range of 30 pieces / 25 mm to 150 pieces / 25 mm, preferably in the range of 40 pieces / 25 mm to 110 pieces / 25 mm. It is good to use the one in. When the flexible polyurethane foam has the number of cells in the above range, the mask 10 has good frictional resistance with the skin in terms of preventing the mask 10 from being displaced. Then, it is possible to reduce the rough feeling on the skin. Further, when the flexible polyurethane foam has the number of cells in the above range, when the mask 10 is used, appropriate air permeability can be ensured, so that it is possible to reduce stuffiness and stuffiness, and a good wearing feeling can be obtained. Furthermore, when the flexible polyurethane foam has the number of cells in the above range, it is possible to obtain an appropriate collection efficiency of pollen and the like when the mask 10 is used.

The flexible polyurethane foam has an elongation rate (JIS K6400-5: 2004 dumbbell No. 2 type) in the range of 80% to 500%, 150% to 500%, and more preferably 200% to 450%. It is good to use the one in. When the flexible polyurethane foam has an elongation rate within the above range, when the mask 10 is used, the peripheral edge of the mask main body 12 is in good contact with the face, and a gap is less likely to occur between the mask and the face. In addition, it is preferable because it can be appropriately stretched according to the movement of the mouth and the like to reduce the burden when worn. When the ear hook portion 14 is formed of the flexible polyurethane foam having an elongation rate in the above range, the ear hook portion 14 is difficult to cut, and the burden on the ear can be reduced to prevent the ear from being hurt.

It is preferable to use a flexible polyurethane foam having a density (JIS K7222: 2005) in the range of 10 kg / m ³ to 100 kg / m ³ , and more preferably in the range of 10 kg / m ³ to 85 kg / m ³ . A flexible polyurethane foam having a density within the above range is preferable because when the mask 10 is used, the weight can be reduced and the burden during wearing can be reduced.

It is preferable to use a flexible polyurethane foam having a hardness (25% ILD) in the range of 40N to 400N, more preferably in the range of 60N to 300N. When the soft polyurethane foam has a hardness within the above range, when the mask 10 is used, the peripheral edge of the mask main body 12 is in good contact with the face, and a gap is less likely to occur between the mask and the face. In addition, it is preferable because it can follow the movement of the mouth and the like and reduce the burden when worn. When the ear hook portion 14 is formed of the flexible polyurethane foam having a hardness within the above range, the ear hook portion 14 is difficult to cut, and the burden on the ear can be reduced to prevent the ear from being hurt. The above-mentioned hardness is based on the hardness test method at the time of 25% compression (method D) with a pressure plate of JIS K6400-2: 2012 version, a flat disk having a diameter of 200 mm.

The flexible polyurethane foam preferably has a breathability in the range of 15 cm ³ / (cm ² · sec) or more, preferably 100 cm ³ / (cm ² · sec) or more. The air permeability of the flexible polyurethane foam is more preferably 150 cm ³ / (cm ² · sec) or more, and further preferably 200 cm ³ / (cm ² · sec) or more. The air permeability of the flexible polyurethane foam is preferably set to 600 cm ³ / (cm ² · sec) or less in relation to the collection efficiency of foreign substances such as pollen. When the flexible polyurethane foam has a breathability within the above range, when the mask 10 is used, an appropriate breathability can be ensured, so that it is possible to reduce stuffiness and stuffiness, and a good wearing feeling can be obtained. Further, if the flexible polyurethane foam has a breathability within the above range, it is possible to obtain an appropriate collection efficiency of pollen and the like when the mask 10 is used. As described above, a flexible polyurethane foam having a breathability within the above range is preferable because it can achieve both ease of breathing and an appropriate collection efficiency of foreign substances. For the above-mentioned breathability, the method described in JIS L1096-7: 2010 "Fabric test method for woven fabrics and knitted fabrics: Method A (Frazier type method)" is used for each of the flexible polyurethane foams having a predetermined thickness. It is a value measured by.

The thickness of the flexible polyurethane foam is preferably in the range of 0.8 mm to 3 mm. When the mask main body portion 12 has a thickness within the above range, it is less likely to be damaged when worn and bulkiness can be suppressed, so that it is easy to handle and the cost of the mask 10 can be suppressed.

As the flexible polyurethane foam, it is preferable to use a flexible polyurethane foam which has been subjected to a treatment for reducing the odor derived from a chemical substance such as a foaming agent and has excellent cleanliness (clean treated product). As a clean treatment, for example, a chemical substance remaining in the flexible polyurethane foam may be washed by washing with water or the like, or heat-treated (for example, 70 to 120 ° C., 30 to 120 minutes) to deodorize. The process of removing is mentioned. Here, it is desirable that the amount of the volatile organic compound (VOC) (total VOC amount) measured in accordance with VDA-278 in the mask main body 12 which is a clean-treated product is 1000 ppm or less. In particular, when the total VOC amount is 400 ppm or less, the odor is further reduced and the cleanliness is excellent, which is preferable.

When the sheet S is a multi-layered body, for example, the fabric may be as follows. As the cloth, a knitted fabric, a woven fabric, a non-woven fabric, or the like in the form of a sheet of fibers can be used, and among these, a knitted fabric is preferable because it has better elasticity than the woven fabric or the non-woven fabric. As the fibers constituting the fabric, those made of chemical fibers such as polyethylene, polypropylene, nylon, urethane and rayon, and those made of natural fibers such as cotton and wool can be used. Polyester fibers are preferable from the viewpoint of durability because they are less discolored by ultraviolet rays. A fabric with low hygroscopicity is convenient for washing and drying. Further, since the cloth made of cotton or rayon has water absorbency, it may be adopted when the mask 10 is required to have hygroscopicity or moisturizing property.

Functions of the fabric include cool contact feeling, water absorption and quick drying, UV protection, heat retention, deodorization, antibacterial, antiviral, etc., and may have two or more of these functions. Cool contact fabrics include, for example, those that feel cold by kneading a substance with high thermal conductivity into the fabric to remove heat from the skin, and those that have a hydrophobic interior that diffuses water and evaporates sweat quickly. The moisture diffusion layer on the skin side absorbs sweat quickly, and the vaporization promoting fiber accelerates evaporation on the surface of the fabric, and because it has many hydroxyl groups and is porous, it quickly absorbs moisture and quickly. There is something to release.

As a water-absorbent quick-drying fabric, for example, the sweat on the skin side of the fabric is moved to the outside by using the capillary phenomenon and then quickly diffused, and the skin surface of the fabric has an uneven structure to reduce the contact area with the skin. The fabric is a knit material that uses acetate fibers to improve the ability to separate from the skin, to keep the inside of clothes dry when sweating by combining water-absorbent polyester and water-repellent polyester. Those that open the stitches when they contain water and return to their original state when they dry, those that are made of ultra-fine polyester fibers with a nano-sized diameter and that exhibit water absorption and water retention due to capillarity and fiber adsorption, and the surface. There is no skin layer and it is porous, and it has excellent moisture absorption and desorption properties and suppresses stuffiness and stickiness. be.

As UV-cut fabrics, for example, by kneading a high-concentration special ceramic into the fiber, it absorbs and diffusely reflects sunlight, and UV is produced by the effects of both cupra fiber and special polyester kneaded with the special ceramic. Those that block, those made of nylon material that has a star-shaped thread cross section while kneading titanium oxide into the core of the thread, and those that knead titanium oxide into polyester and make the cross section of the thread a cross cross section. There are things that have been done.

As the heat insulating cloth, for example, there is a cloth that stores a large amount of air in the cloth and does not let the warm air escape to the outside. Examples of the deodorant fabric include those in which nano-level ceramics adsorb odor components and decompose metal ions, and those in which ammonia is adsorbed to deodorize.

Examples of the antiviral fabric include those subjected to antibacterial / antiviral functional fiber processing that strongly immobilizes the immobilized antibacterial component on the fiber surface. As antibacterial fabrics, for example, those that have been antibacterial processed to suppress the growth of bacteria on the fibers, those that use silver (ion), and those that knead a special ceramic antibacterial agent in each nylon. Some are made of intricate materials.

As the fabric, it is preferable to use a so-called stretch fabric, such as one having structural elasticity depending on the weaving method or knitting method, or one having elasticity by using elastic fibers having elasticity. When the fabric is a woven fabric, it is preferably a plain weave, a twill weave, or a jacquard weave having elasticity. If the fabric is a knit, warp knit, weft knit, or the like can be used. If it is a warp knit, for example, tricot, double raschel, etc. can be mentioned. Can be mentioned. The cloth may be a cloth having antibacterial properties by antibacterial treatment or the like (antibacterial cloth).

When the fabric is a non-woven fabric, the web may be formed by any of a dry method, a spunbond method, a meltblown method, an airlaid method, and the like. From the viewpoint of the efficiency of collecting fine foreign substances such as viruses, a non-woven fabric by the melt blown method (melt blown non-woven fabric) and a non-woven fabric by the spunbond method (spunbond non-woven fabric) are preferable. Further, in the non-woven fabric, the fiber bonding method of the web may be any of a chemical bond method, a thermal bond method, a needle punching method, a water flow confounding method (spun lace), etc., but the mask 10 has few VOCs. The water flow confounding method and the needle punch method are preferable. The fiber sheet may be one in which the fibers on the surface are raised.

As the cloth, it is preferable to use a cloth having an elongation rate (JIS K6400-5: 2004 dumbbell No. 2 type) in the range of 50% to 500%. As described above, the sheet S constituting the mask 10 can be composed of a laminated body in which a flexible polyurethane foam and a cloth having a stretch rate within the range described above are laminated. In this case, when the fabric constituting the sheet S is within the above-mentioned elongation range, it is possible to prevent the fabric from hindering the elasticity peculiar to the flexible polyurethane foam forming the sheet S. As a result, when the mask 10 is used, it is preferable because it can be appropriately stretched following the deformation of the mask main body 12 and the movement of the mouth and the like, and the burden at the time of wearing can be reduced. Further, when the ear hook portion 14 is formed by the sheet S, the ear hook portion 14 is hard to be cut, and the burden on the ear can be reduced to prevent the ear from being hurt.

It is preferable to use a fabric having a breathability in the range of 15 cm ³ / (cm ² · sec) or more, preferably 30 cm ³ / (cm ² · sec) or more, and more preferably 40 cm ³ / sec. / (Cm ² · sec) or more. The air permeability of the fabric is preferably set to 150 cm ³ / (cm ² · sec) or less in relation to the collection efficiency of foreign substances such as pollen. When the cloth has a breathability within the above range, when the mask 10 is used, an appropriate breathability can be ensured, so that it is possible to reduce the suffocation and a good wearing feeling can be obtained. Further, if the fabric has a breathability within the above range, it is possible to obtain an appropriate collection efficiency of viruses and the like when the mask 10 is used. As described above, it is preferable that the fabric has a breathability within the above range because it can achieve both ease of breathing and an appropriate collection efficiency of foreign substances. Further, when the cloth has a breathability within the above range, when the mask 10 is used, an appropriate breathability can be ensured, so that it is possible to reduce the suffocation, prevent stuffiness, and a good wearing feeling can be obtained. The above-mentioned air permeability is a value measured by using the method described in JIS L1096-7: 2010 "Fabric test method for woven fabrics and knitted fabrics: Method A (Frazier type method)".

As the thickness of the fabric increases, the efficiency of collecting foreign substances increases, but the pressure loss of the air passing through the fabric increases (the air permeability decreases). The smaller the thickness of the fabric, the lower the efficiency of collecting foreign matter, but the smaller the pressure loss of the air passing through it (the higher the air permeability). The fabric preferably has a thickness in the range of 0.1 mm to 0.4 mm. When the thickness of the fabric is within the above-mentioned range, it is possible to achieve both suitable foreign matter collection efficiency and reduction of pressure loss. It is preferable that the fabric has a thickness within the above range because the bulkiness of the sheet S can be suppressed.

Examples of the method for joining the laminate include a method of bonding the flexible polyurethane foam sheet and the fabric by using frame lamination and a hot melt adhesive. As an adhesive method using a hot melt adhesive, a flexible polyurethane foam sheet and a fabric are bonded together by sandwiching an adhesive layer such as a hot melt adhesive or applying an adhesive by a roll coater or spray application. be able to. Further, a method (dry lamination) in which a non-woven fabric-like hot melt sheet is sandwiched between a flexible polyurethane foam sheet and a cloth and heat-bonded to melt and bond the hot melt material can be mentioned. As the hot melt material, a thermoplastic hot melt material or a moisture-curable hot melt material can be used. The sheet S may be formed by joining the flexible polyurethane foam sheet and the fabric as a whole, or partially joining them, for example, by joining them in dots at predetermined intervals, but from the viewpoint of mutual followability. Should be joined as a whole.

The mask 10 can be formed, for example, by punching a sheet S having a required thickness with a Thomson blade or the like. At this time, not only the outer shapes of the mask main body portion 12 and the ear hook portion 14 are punched, but also the ear hook holes 14a, the outer shape of the strap 16, and the cut 18 between the mask portion 10A and the strap 16 are also punched. do it. By forming circular notches 18a (see FIG. 3) at both ends of the cut 18, it is possible to prevent tearing from the ends of the cut 18.

In the mask 10 of the first embodiment, when the mask portion 10A is removed, the mask portion 10A can be hung by the strap 16 hooked on the neck. Therefore, there is no need to worry about where to put the removed mask 10. In addition, it is possible to prevent stains caused by placing the mask 10, which is hygienic. According to the mask 10 of the first embodiment, it can be easily removed when it is not needed, such as while eating, driving a car, or when not facing a person, but it can be easily attached when it is needed. It is easy to use. In this way, the mask 10 of the first embodiment can be easily removed to eliminate the stuffiness around the mouth, and the temperature of the mask portion 10A that has risen during wearing can be cooled, which is the case when the temperature is high such as in summer. However, it can be preferably used.

In the mask 10 of the first embodiment, since the mask portion 10A and the strap 16 are integrally formed, it is easy to use without the trouble of attaching a separate strap. Further, in the mask 10 of the first embodiment, since the mask portion 10A and the strap 16 are formed of one (same) sheet S, the number of parts can be reduced, and even if the strap 16 is provided, the cost is reduced. The rise can be suppressed. Moreover, as described above, it is possible to obtain the mask 10 of the first embodiment by one punching process from one sheet S, and even if the strap 16 is provided, the manufacturing cost is not required. Can be suppressed.

In the mask 10 of the first embodiment, since the end of the strap 16 is connected to the ear hook portion 14, the left-right width between the left and right ear hook portions 14 extending in the left-right direction from both side portions of the mask main body portion 12. Can be used to increase the left-right length of the strap 16. Further, by connecting the end of the strap 16 to the side end of the ear hook portion 14 or the vicinity of the side end, the mask portion 10A stands against the body (chest) when the mask 10 is hung on the neck using the strap 16. It can be in a good posture (see Fig. 2). By doing so, it is possible to prevent the back side of the mask portion 10A from coming into contact with the body, so that the hygienic state of the mask portion 10A can be appropriately maintained even if the mask 10 is attached or detached. In particular, by connecting the end of the strap 16 to the lower side of the ear hook portion 14, when the mask 10 is hung on the neck using the strap 16, the back side of the mask portion 10A does not face outward (chest). It can be in a posture of standing perpendicular to the object (see FIG. 2). By doing so, it is possible to prevent the back side of the mask portion 10A from coming into contact with other objects, so that the hygienic state of the mask portion 10A can be suitably maintained even if the mask 10 is attached or detached.

Since the mask 10 of the first embodiment is formed so that the strap 16 extends along the edge of the mask portion 10A, the loss when the mask portion 10A and the strap 16 are taken from the sheet S can be minimized. .. By doing so, it is possible to suppress an increase in cost even if the strap 16 is provided.

(Embodiment 2)
The whole is not limited to one sheet S like the mask 10 of the first embodiment, but two or more sheets (2 in the second embodiment) like the mask 20 of the second embodiment shown in FIGS. 4 and 5. The whole may be composed of the sheet S (sheets).

As shown in FIGS. 4 and 5, the mask portion 20A of the mask 20 according to the second embodiment is a half body portion 22A forming half of the mask main body portion 22 covering the wearer's mouth and one side of the half body portion 22A. It is composed of two mask halves 21 each having an ear hook portion 14 connected to the portion. The mask portion 20A constitutes the mask main body portion 22 by joining the other side portions (side portions on the opposite side of the ear hook portion 14) of the half body portions 22A and 22A of the two mask half bodies 21 and 21 to each other. There is. Further, the mask 20 of the second embodiment includes a strap half body 26A formed in a band shape having one end connected to the edge of the mask half body 21. Here, the mask half body 21 and the strap half body 26A are composed of one flexible sheet S. The mask 20 of the second embodiment is configured by joining the other ends of the strap halves 26A and 26A connected to the separate mask halves 21 and 21 to each other, and creates a space through which the head passes between the mask halves 20A and the mask portion 20A. It has a formable strap 26 (see FIG. 4).

The mask 20 constitutes a mask main body 22 so as to join two sheets S and S to form a three-dimensional shape. When the two sheets S and S are deployed so as to be separated from each other with the connecting portion 24 formed in the central portion as the center, the mask main body portion 22 becomes convex to the front side and in the left-right direction toward the central portion in the vertical direction. It becomes a three-dimensional shape curved so as to be convex toward the front side toward the center (see FIG. 4).

As shown in FIG. 5, in the mask 20, each laminated sheet S is formed in a symmetrical shape constituting half in the left-right direction of the mask 20. Specifically, one sheet S forms half of the mask main body 22 in the left-right direction, half of the ear hook portion 14 connected to one side of the mask main body 22, and half of the strap 26. Each sheet S is formed in a curved shape in which the other side portion on the opposite side of the ear hook portion 14, which is the central portion in the left-right direction of the mask main body portion 22, is convex in the central portion in the vertical direction.

As shown in FIG. 4, the right end of the strap 26 is connected to the right ear hook portion 14, and the left end is connected to the left ear hook portion 14. Further, in the strap 26, the other ends of the strap half body 26A are connected to each other at the central portion. Here, it is preferable that the end of the strap 26 is connected to the side end (outermost portion in the left-right direction) of the ear hook portion 14 or its vicinity thereof, because the length of the strap 26 in the left-right direction can be increased. In the second embodiment, the end of the strap 26 is in the vicinity of the side end of the ear hook portion 14 and is connected to a portion below the side end.

As shown in FIGS. 5 and 6, the strap 26 is formed to extend along the edge of the mask portion 20A. In the second embodiment, the strap 26 is formed so as to extend from the lower edge of the ear hook portion 14 along the lower edge of the mask main body portion 22 with the linear cut 18 interposed therebetween.

The mask 20 of the second embodiment can be manufactured, for example, as follows. First, the two sheets S and S are overlapped (see FIG. 7A). Next, according to the shape of the connecting portion 24 formed in a chevron shape, two sheets S, S are welded by heat such as heat sealing (Embodiment 2), ultrasonic welding, an adhesive, sewing, or the like. To join each other (see FIG. 7 (b)). Punching is performed by a Thomson blade or the like according to the shapes of the mask half body 21 and the strap half body 26A (see FIG. 7 (c)). Here, the two sheets S, S integrally form a portion corresponding to the half body portion 22A, the ear hook portion 14, and the strap half body 26A in the same punching process. Further, in the punching process, a cut is made along the outer edge of the connecting portion 24, and a cut 18 is made between the half body portion 22A and the strap half body 26A. By performing one punching process with a part of the two sheets S and S connected in this way, the mask portion 20A and 2 in which the two mask halves 21 and 21 are connected at the central portion. A mask 20 is obtained in which the strap halves 26A and 26A of the book are formed with the strap 26 connected at the center.

Even the mask 20 of the second embodiment has the same effect as that of the first embodiment. Like the mask 20 of the second embodiment, by forming the mask main body 22 with a plurality of sheets S, S (two mask halves 21, 21), the main part covering the mouth and nose is shaped like a face. It becomes easy to form together. Therefore, according to the mask 20, the adhesion to the face can be improved. The mask 20 is unlikely to have a gap between it and the face even if the mouth is moved, and can prevent foreign matter from entering through the gap. In particular, by forming the connecting portion 24, which is the center of the mask body 22 in the left-right direction, into a curved shape, when the two mask halves 21 and 21 are unfolded to the left and right, the center portion of the mask body 22 in the left-right direction is formed. It is preferable because it has a three-dimensional shape that swells toward the front side of the mask 20.

(Embodiment 3)
As shown in FIG. 8, the mask 30 of the third embodiment is entirely formed by one sheet S as in the first embodiment. Here, the ear hook portion 14 is formed by punching the sheet S so as to form the ear hook hole 14a, so that one end thereof is connected to the upper side of the mask main body portion 12 and the other end is the lateral side of the mask main body portion 12. It is formed in a ring shape connected to the lower part. In the ear hook portion 14, in addition to the punching process of the ear hook hole 14a, a slit 32 penetrating the sheet S is provided on the ear hook portion 14 on the rear side of the ear when the mask 10 is worn (the portion that touches the ear). It is formed so as to extend to (see FIG. 8 (a)). In the ear hook portion 14 of the third embodiment, a plurality of slits 32 arranged in a perforation pattern on a portion of the ear hook portion 14 on the rear side of the ear when the mask 10 is worn makes it easier to break than other portions. 34 is provided. The ear hook portion 14 can cut the size adjusting portion 36 inside the easy break line 34 of the ear hook portion 14 by breaking along the easy break line 34 (see FIG. 8B). ..

Reference numeral 38 is an opening penetrating the sheet S, and is formed on the side portion of the mask main body portion 12 so as to be longitudinally along the ear hook hole 14a. By forming the opening 38 in this way, the side portion of the mask main body portion 12 connected to the ear hook portion 14 can be easily extended. As a result, the side portion of the mask main body portion 12 can be aligned with the face, and the burden on the ears due to the ear hook portion 14 can be reduced. The opening 38 may be omitted.

Even the mask 30 of the third embodiment has the same effect as that of the first embodiment. When the size adjusting portion 36 is provided, the mask 30 of the third embodiment is worn on a relatively small face because the distance between the portion of the ear hook portion 14 that touches the ear and the side portion of the mask main body portion 12 is relatively short. However, the mask main body 12 can be brought into close contact with the face without sagging. Further, when the size adjusting portion 36 is cut off by the easy breaking line, the mask 30 has a relatively large face because the distance between the portion of the ear hook portion 14 that touches the ear and the side portion of the mask main body portion 12 is relatively long. Even if it is worn on the face, it can be brought into close contact with the face without putting a burden on the ears. As described above, according to the mask 30 of the third embodiment, it is possible to adapt to the change in the size of the face depending on the presence or absence of the size adjusting unit 36. Moreover, the slit 32 can be formed together with the formation of the ear hook portion 14, and since the material does not increase, the increase in manufacturing cost can be suppressed. The mask 30 of the third embodiment may be configured by joining a plurality of sheets S as in the second embodiment.

(Reference example)
The mask 40 of the reference example shown in FIG. 9 has a shape in which the strap 16 is omitted from the mask 30 of the third embodiment. The mask 40 of the reference example may be configured by joining a plurality of sheets S as in the second embodiment.

Traditional masks cannot be adjusted to fit the size of the face, and it is necessary to make variations of multiple sizes, such as for adults, women, and children.
As a configuration for solving the above problems, the present specification includes
An ear hook portion made of a flexible sheet and having one end connected to the lateral upper part of the mask main body covering the wearer's mouth and the other end connected to the lateral lower part of the mask main body. Have,
The ear hook has an easily broken line formed by a slit penetrating the sheet so as to extend to a portion on the back side of the ear when the mask is worn.
A mask of a reference example is disclosed, wherein a portion of the ear hook portion inside the easily broken line can be cut by breaking at the easily broken line.
According to the mask of the reference example, by cutting a part of the ear hook portion at the easy break line, the inside of the ear hook portion can be widened in the left-right direction to fit a face size larger than that before cutting.

(Embodiment 4)
As shown in FIG. 10, the mask 50 of the fourth embodiment includes a connecting portion 24 extending from the upper edge of the mask main body portion 12 in the mask portion 10A toward the central portion. In the mask 50 of the fourth embodiment, one connecting portion 24 is formed in the central portion in the left-right direction of the mask main body portion 12 from the upper edge to the intermediate position in the vertical direction, and the connecting portion is formed from the intermediate position to the lower edge. 24 is not formed. The mask 50 is brought together by a connecting portion 24 formed in the center in the left-right direction of a part of the upper region of the sheet S forming the mask main body 12, and the center of the mask body 12 in the left-right direction is moved from the upper edge to the center. It swells to the front side (see FIG. 10). Since the configuration of the strap 16 is the same as that of the first embodiment, the description thereof will be omitted.

As shown in FIGS. 10 and 11 (c), the mask main body portion 12 is formed with a connecting portion 24 so as to incline toward the front side from the upper edge toward the lower side. The angle of the center line in the left-right direction of the mask main body 12 changes between the upper region where the connection portion 24 is formed and the lower region where the connection portion 24 is not formed (see FIG. 11B). .. When the mask main body portion 12 is formed so that the vertical central portion in the central line in the left-right direction protrudes to the front side, the mask main body portion 12 has a three-dimensional shape that swells to the front side when the mask main body portion 12 is expanded to the left and right when worn.

The mask 50 is not processed such as forming a connecting portion 24 in the lower region of the sheet S forming the mask main body portion 12, but the center of the mask main body portion 12 in the left-right direction swells to the front side as it goes upward from the lower edge. At this time, in the mask main body portion 12, the lower end of the connecting portion 24 becomes the top of the three-dimensional shape. Further, the mask 50 is brought together by a connection portion 24 formed in the center in the left-right direction of a part of the upper region of the sheet S forming the mask main body portion 12, and is moved from the ear hook portion 14 side to the center in the left-right direction of the mask main body portion 12. It swells to the front side as it goes toward it (see FIG. 10). As described above, the mask 50 is formed in a three-dimensional shape in which the central portion of the mask main body portion 12 bulges toward the front side.

The mask 50 of the fourth embodiment can be manufactured, for example, as follows. By punching with a Thomson blade or the like, a sheet S in an unfolded state corresponding to the shape of the mask 50 including the strap 16 is created (see FIG. 11A). Here, the sheet S integrally forms a portion corresponding to the strap 16, the mask main body portion 12, and the ear hook portion 14 in the same punching process. Further, a notch Nt is formed in the upper part of the portion of the sheet S corresponding to the mask main body portion 12 in accordance with the punching process of the sheet S. The notch Nt is located at the center of the sheet S in the left-right direction, and is formed in a shape that widens from the bottom (bottom) to the top. The sheet S has a symmetrical shape with the bottom of the notch Nt interposed therebetween.

Next, the sheets S are folded in half in the left-right direction with the bottom of the notch Nt as the center and overlapped with each other (see FIG. 11B). The edges of the notches Nt that overlap each other are joined to each other by appropriate methods such as heat welding such as heat sealing (Embodiment 4), ultrasonic welding, adhesive, and sewing (see FIG. 11 (b)). As a result, the mask 50 can be obtained (see FIG. 11 (c)).

The connecting portion 24 is formed so as to overlap the edges of the notches Nt provided in a part of the sheet S. Further, the mask main body portion 12 is formed so that the left-right dimension of the portion passing through the connecting portion 24 is shorter than the corresponding portion in the sheet S in the unfolded state before forming the connecting portion 24. Since the mask 50 has a three-dimensional shape in which the central portion of the mask main body portion 12 bulges toward the front side by the connecting portion 24, the peripheral edge of the mask 50 can be brought into close contact with the face without pressing the wearer's nose tip. Further, since the mask 50 has a structure in which a space exists between the mask 50 and the front side of the mouth, it is possible to reduce the suffocation. Since the mask 50 is slanted along the nasal bridge so that the connecting portion 24 extends downward from the upper edge of the mask main body portion 12 toward the front side, the burden on the nose can be reduced. Moreover, the mask 50 can be positioned by aligning the tip of the nose with the top of the mask main body 12 at the lower end of the connection portion 24, and is less likely to shift when worn.

The connecting portion 24 is formed in the vertical direction from the upper edge of the mask main body portion 12 toward the central portion. Therefore, when the mask 50 is worn, the connecting portion 24 is arranged above the nostrils, and the nostrils and the mouth can be covered with a lower region made of a seamless sheet S. In the mask 50, for example, when the connection portion 24 is formed by sewing, the air permeability of the connection portion 24 may increase (foreign matter collection efficiency decreases), but the nostrils and mouth are covered with a seamless sheet S. , The performance of the sheet S is properly exhibited.

Although the mask 50 has a connecting portion 24 formed to form a three-dimensional shape, the mask main body portion 12, the ear hook portion 14, and the strap 16 are composed of one sheet S, so that the number of parts can be reduced. Can be done. Therefore, the cost of the mask 50 can be suppressed. Moreover, the mask 50 is configured such that the connecting portion 24 is not formed over the entire upper and lower sides of the mask main body portion 12, but the connecting portion 24 is formed in a partial (upper) region in the vertical direction. As a result, it is possible to suppress the occurrence of damage such as the connection portion 24 being peeled off from the end when a force is applied to pull it to the left or right when wearing it.

In the mask 50, the upper region of the mask main body 12 is moved inward in the left-right direction by the connecting portion 24, so that the lower edge is pulled outward in the left-right direction. Therefore, even if the lower edge of the sheet S is formed linearly as in the fourth embodiment, when the mask 50 is used, the lower edge corresponding to the chin portion has a natural arc shape, so that the chin line is formed. By attaching the mask 50, it is possible to create a smart facial line. In particular, a sheet S made of a flexible polyurethane foam having excellent extensibility is preferable because it can flexibly follow the shape of an individual face such as a chin line.

Even with the mask 50 of the fourth embodiment, the strap 16 exerts a suitable action and effect as in the first embodiment. Although the example in which the connection portion 24 is worn facing the front side is shown in the second and fourth embodiments, the connecting portion 24 may be worn facing the back side (wearer side). Further, the connection portion 24 of the fourth embodiment may be provided so as to extend vertically from the lower edge of the mask main body portion 12 to the middle position of the central portion.

(Change example)
Not limited to the above-mentioned matters, for example, the following may be performed.

(1) In the first and second embodiments, the mask portions 10A and 20A and the straps 16 and 26 are separated by a cut 18, but as shown in FIG. 12, for example, between the mask portions 10A and the strap 16. It may be divided by providing an opening in.
(2) As shown in FIG. 12, if the ends of the strap 16 are connected at an angle orthogonal to or close to the ear hook portion 14, the strap 16 is difficult to cut from the joint with the ear hook portion 14, which is preferable. ..

(3) The strap may be connected to the mask main body.
(4) The strap may be provided on the upper side of the mask portion.

10A mask part, 12 mask body part, 14 ear hook part, 16 strap,
20A mask part, 21 mask half body, 22 mask body part, 22A half body part,
26 straps, 26A strap halves, 32 slits, 34 easy break lines

Claims (6)

A mask body that covers the wearer's mouth, a mask part that has an ear hook that is connected to the side of the mask body, and a mask part.
It is provided with a strap, which is formed in a band shape in which both ends are connected to the edge of the mask portion and can form a space through which the head passes between the mask portion.
A mask characterized in that the mask portion and the strap are made of one flexible sheet. It consists of two mask halves, each of which has a half body that covers half of the mask body covering the wearer's mouth and an ear hook that is connected to one side of the hem, and the other side of the hem. And the mask portion that constitutes the mask body portion by joining each other
It comprises a band-shaped strap half body, one end of which is connected to the edge of the mask half body.
The mask half and the strap half are composed of one flexible sheet.
It is characterized by having a strap that is configured by joining the other ends of the strap halves connected to the separate mask halves to each other and can form a space through which the head passes between the strap halves. mask. The mask according to claim 1 or 2, wherein the end of the strap is connected to the ear hook portion. The mask according to any one of claims 1 to 3, wherein the strap is formed so as to extend along the edge of the mask portion. The ear hook portion is formed in an annular shape in which one end is connected to the upper part of the mask main body and the other end is connected to the lower part of the mask main body.
The ear hook has an easily broken line formed by a slit penetrating the sheet so as to extend to a portion on the back side of the ear when the mask is worn.
The mask according to any one of claims 1 to 4, wherein a portion of the ear hook portion inside the easily broken line can be cut off by breaking at the easily broken line. The mask according to any one of claims 1 to 5, wherein the sheet is a single layer made of flexible polyurethane foam or a laminated body containing at least a flexible polyurethane foam layer.

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