JP2022026534A - Mask, and manufacturing method of mask - Google Patents

Abstract

To provide masks with various sizes excellent in wear feeling.SOLUTION: A mask comprises: a mask body; and a pair of ear hook parts coupled with both ends in a lateral direction of the mask body, respectively, in which the pair of ear hook parts is formed like a single sheet, and arranged by being overlapped with the mask body without protruding from the mask body at least in the lateral direction in a state before starting use, the ear hook part has a stretchable member, and a surface material joined to at least one side of the stretchable member in a state in which the stretchable member is stretched by a predetermined scale factor from a natural length, and the ear hook part has a highly stretchable part which is easy to be stretched in the lateral direction in wearing, and a hardly stretchable part which is difficult to be stretched in the lateral direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a mask and a method for manufacturing the mask.

The mask to be worn on the face consists of a mask body that covers at least a part of the wearer's face and a pair of ear hooks bonded to the mask body, that is, the wearer to hold the mask body in the wearing position. It is known that it is equipped with a member that can be hung on each ear.

Conventionally, the ear hook used for the mask is often string-shaped. However, in recent years, in order to reduce the burden on the ears, a sheet-shaped ear hook portion has been studied. For example, the mask disclosed in Patent Document 1 includes a joint portion integrally formed of a single sheet-like nonwoven fabric and an ear hook portion having an annular portion, and the joint portion is joined to the end region of the mask main body portion. ing. Further, Patent Document 1 discloses an elastic spunbonded non-woven fabric or the like as a material of the ear hook portion.

The single sheet-shaped ear hooks (ear hook sheets) as disclosed in Patent Document 1 are stacked on the mask body in the state before the start of use, and at the start of use, they are placed on each other in the center in the left-right direction. Separate and open outward in the left-right direction for use. In such a form of the mask, from the viewpoint of facilitating handling during continuous manufacturing, the single-sheet-shaped ear hook portion should be fitted within the outer shape of the mask body in a plan view at least in the left-right direction. Has a large size.

Japanese Patent No. 5762802

In recent years, masks of various sizes have been manufactured depending on the application and / or the size of the user's face. For example, in addition to regular size masks, smaller size masks for women or children are also manufactured. With a smaller size mask, the size of the mask body is smaller, so it is necessary to reduce the size of the sheet-shaped ear hooks that are placed on top of the mask body.

However, when designing a sheet-shaped ear hook of a smaller size, it is good to simply reduce the shape of the ear hook of a normal size mask to match the overall reduction ratio of the mask body. It may not be possible to obtain a feeling of wearing. For example, when the ear hook portion is reduced in accordance with the reduction ratio of the outer shape of the mask body, the width of the ring of the ear hook portion is reduced, so that the wearing feeling of the ear hook portion to the ear may be impaired. On the other hand, if the ear hook is designed without changing the width of the ring of the ear hook in order to maintain the wearing feeling, the length of the portion of the ear hook that greatly contributes to the extension in the left-right direction is short. Therefore, it becomes difficult for the ear hook to extend in the left-right direction. Therefore, the user may feel a sense of discomfort while wearing the mask, and it is easy to feel inconvenience in the wearing operation. Therefore, it is necessary to consider the design of the ear hook so that masks of various sizes that are comfortable to wear can be provided.

One aspect of the present invention in view of the above is an object to be able to provide masks of various sizes having excellent wearing comfort.

The first aspect of the present invention is a mask including a mask main body and a pair of ear hook portions connected to both ends of the mask main body in the left-right direction, wherein the pair of ear hook portions are simply. It is formed in the form of a single sheet, and is arranged so as to overlap the mask body at least in the left-right direction without protruding from the mask body in the state before the start of use. A highly stretchable portion having a surface material joined to at least one surface of the stretchable member in a state where the sex member is stretched from its natural length at a predetermined magnification, and the ear hook portion is easily stretched in the left-right direction. And a low extension portion that is difficult to extend in the left-right direction.

In the mask according to the first aspect, a pair of ear hooks are formed in the form of a single sheet (formed from one sheet), and the mask is stacked on the mask body without protruding from the mask body at least in the left-right direction. Since it is arranged, the main body and the sheet-shaped ear hook can be overlapped and joined, and continuous manufacturing is easy.

Further, in this embodiment, the ear hook portion has a high extension portion that is easily extended in the left-right direction and a low extension portion that is difficult to extend in the left-right direction. Therefore, it is possible to obtain an ear hook portion that exhibits good extension characteristics in the left-right direction, which is the main direction in which the ear hook portion is pulled during the wearing operation and during wearing (during wearing). Further, in this embodiment, since the ear hook portion is configured by joining the surface material in a state where the elastic member is stretched to a predetermined magnification, the above-mentioned stretch characteristic of the ear hook portion is the manufacturing of the ear hook portion. It can be easily adjusted by changing the degree of extension of the elastic member. Therefore, it is possible to easily obtain an ear hook portion having appropriate extension characteristics according to the size of the mask and the size of the ear hook portion, and it is possible to manufacture a mask having an excellent wearing feeling.

In the second aspect of the present invention, k × _we1 = 75 to 145, where k is the predetermined magnification and _we1 (unit: mm) is the length of the highly elongated portion in the left-right direction.

According to the second aspect, the magnification (extension ratio) k for extending the elastic member in the manufacture of the ear hook and the length w in the left-right direction of the highly stretchable portion of the ear hook that is easily stretched in the left-right direction. The value multiplied by _e1 (unit: mm) is 75 to 145. As a result, even if the size of the mask is changed and the size of the ear hook is changed, it is possible to obtain an ear hook with more appropriate elongation characteristics according to the size, and a mask with excellent wearing comfort can be manufactured. can do.

In the third aspect of the present invention, the stretchable member has a first surface and a second surface opposite to the first surface, and the surface material is joined to the first surface. A surface material and a second surface material joined to the second surface are included.

According to the third aspect, the single sheet-shaped ear hook portion has a structure in which the elastic member is sandwiched between the first surface material and the second surface material. That is, both surfaces of the stretchable member are covered with the surface material, and the stretchable member is not exposed. Some elastic members may cause irritation or discomfort to the skin when they are expanded and contracted while in direct contact with the user's skin. Therefore, by appropriately selecting the material of the surface material, it is possible to prevent the elastic member from coming into contact with the wearer's skin, and to improve the wearing feeling when the ear hook portion touches the user's skin. can.

In the fourth aspect of the present invention, the stretchable member is a stretchable film.

According to the fourth aspect, by forming the elastic member in the form of a film, the ear hook can be manufactured more easily, and the shape of the ear hook can be easily maintained.

In the fifth aspect of the present invention, the first surface material and the second surface material are made of a non-woven fabric.

According to the fifth aspect, by using a non-woven fabric as the first surface material and the second surface material that can come into direct contact with the skin of the user, the surface of the ear hook can be softened, and the ear hook can be softened. The fit can be improved.

In the sixth aspect of the present invention, the ear hook portion is arranged on the outer surface of the mask body.

According to the sixth aspect, at the start of use, the operation of separating the pair of ear hooks formed in a single sheet shape from each other and opening them in the left-right direction is made to face the inner surface of the mask body (to face the face side when worn). It can be done with almost no touch on the surface). Therefore, a mask with good hygiene can be worn.

In the seventh aspect of the present invention, a sheet-shaped auxiliary material is further provided, and the ear hook portion is connected to the mask body via the auxiliary material.

According to the seventh aspect, each ear hook portion is connected to the mask body via an auxiliary material. That is, the mask can be formed without directly connecting the ear hook portion and the mask body. Therefore, the joint portion between the ear hook portion and the auxiliary material and the joint portion between the mask body and the auxiliary material can be formed separately in an appropriate bonding form. As a result, it is possible to form a hard-to-break bond between the ear hook and the mask body without impairing the function and wearing feeling of the member, and a durable mask can be obtained. In addition, it is possible to prevent a part of the ear hook portion from being used for adhesion to the mask body. Therefore, as compared with the case where the ear hook is directly connected to the mask body, the ear hook can be moved more freely with respect to the mask body, so that the degree of freedom in the mounting position of the ear hook is increased.

In the eighth aspect of the present invention, (a) a surface material is superposed on at least one surface of the stretchable member in a state where the stretchable member is stretched in a predetermined direction at a predetermined magnification, and the stretchable member and the surface thereof are overlapped. A plurality of single sheet-shaped ear hook sheets including a pair of ear hooks are formed by intermittently joining the materials to obtain a laminated body, relaxing the laminated body in the predetermined direction, and cutting the laminated body. (B) The mask body band forming the mask body is superposed on the two ear hook sheets separated from each other in the predetermined direction, and the pair of ear hooks are formed on both ends of the mask body in the left-right direction. The ear hook sheet is bonded to the mask body band so as to be bonded, and (c) the mask body band is cut to form an individual mask, and the ear hook is extended in the left-right direction. It has a highly stretchable portion that is easy to stretch and a low stretchable portion that is difficult to stretch in the left-right direction.

According to the eighth aspect, it is possible to provide a manufacturing method capable of obtaining the same effect as the effect obtained in the first aspect.

In the ninth aspect of the present invention, k × _we1 = 75 to 145, where k is the predetermined magnification and _we1 (unit: mm) is the length of the highly elongated portion in the left-right direction.

According to the ninth aspect of the present invention, it is possible to provide a production method capable of obtaining the same effect as the effect obtained in the second aspect.

According to one aspect of the present invention, it is possible to provide masks of various sizes that are excellent in wearing comfort.

It is a top view which looked at the mask by one embodiment of this invention from the outside. It is a top view seen from the inside (face side) of the mask shown in FIG. FIG. 3 is a cross-sectional view taken along the line II of FIG. It is a figure for demonstrating the example of the use method of the mask shown in FIG. 1, and is the top view after each pair of ear hook portions is opened laterally. FIG. 4 is a sectional view taken along line II-II of FIG. It is a figure for demonstrating the enlarged view of the part III of FIG. 5, and the structure of the ear hook part. It is a schematic diagram of the manufacturing apparatus of the ear hook part for a mask, and the manufacturing apparatus of a mask according to one embodiment of this invention. It is a figure explaining the manufacturing of the mask by the apparatus shown in FIG. 7. It is a top view of the masks of different sizes. It is a plan view of a mask of a small size (the lower mask of FIG. 9 is reprinted). It is a figure which shows the evaluation result of an Example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each drawing, unless otherwise specified, the same or corresponding configurations may be designated by the same reference numerals and description thereof may be omitted. In addition, the drawings are schematic to help the understanding of the invention.

(Basic mask configuration)
The mask according to one embodiment of the present invention may be a mask capable of covering the wearer's face, more specifically, at least the wearer's nose and mouth. The mask according to this embodiment may have a function of preventing foreign matter from reaching the face and preventing droplets emitted by the wearer from scattering, and is also called a sanitary mask or a surgical mask. The mask may be disposable or reusable by washing.

FIG. 1 shows a plan view of the mask 1 according to the present embodiment. FIG. 1 is a view of the mask 1 viewed from the outside (or the outer surface side), that is, the side exposed to the outside so as not to face the face when worn. Further, FIG. 2 shows a plan view of the mask as viewed from the inside (face side). FIG. 3 shows a sectional view taken along line II of FIG.

As shown in FIG. 1, the mask 1 according to the present embodiment is arranged in front of the wearer's face at the time of wearing, and is coupled to the mask body 10 which can mainly cover the nose and mouth of the wearer and the mask body 10. It includes a pair of ear hooks 20a and 20a. The mask body 10 has a vertical direction D1 corresponding to the vertical direction of the wearer's face when worn, and a horizontal direction D2 corresponding to the horizontal direction of the wearer's face when worn. The vertical direction D1 and the horizontal direction D2 are orthogonal to each other. In the form of FIG. 1, the mask body 10 has a rectangular plan view shape having long sides in the left-right direction D2, but the plan view shape of the mask body 10 is not limited to the one shown in the figure.

As shown in FIGS. 1 and 2, the mask body 10 has a pleated structure 15 formed by a plurality of folds arranged side by side in the vertical direction D1. The folds of the pleated structure 15 are formed by folding the sheet constituting the main body 10 along a folding line along the left-right direction D2. Then, in a state where a plurality of folds are formed, both side portions (both ends of the left-right direction D2) of the mask main body 10 are fixed by a heat seal or the like. Therefore, when the mask 1 is used, the folds of the pleated structure 15 are widened in the vertical direction D1, so that the center of the mask body 10 in the left-right direction D2 is curved so as to protrude toward the outer surface side of the mask 1, and the three-dimensional shape of the face is formed. Can be transformed into a shape suitable for. The specific configuration of the pleated structure 15 is not particularly limited, and may be a known configuration formed on the mask body.

The mask body 10 may have a multilayer structure in which a plurality of layers are laminated. For example, the structure may include at least three layers in which an intermediate layer having an enhanced function of collecting foreign substances (dust, pollen, bacteria, viruses, etc.) is sandwiched between an outer layer and an inner layer. Each layer constituting the main body 10 preferably includes a fiber-containing layer such as a non-woven fabric, a woven fabric, or a knitted fabric, and more preferably contains a non-woven fabric. Examples of the non-woven fabric include spunbonded non-woven fabric, spunlaced non-woven fabric, meltblown non-woven fabric, air-through non-woven fabric, point-bonded non-woven fabric and the like. Further, it is preferable to use a meltblown nonwoven fabric containing fine fibers as the intermediate layer. The fiber constituting the fiber-containing layer is preferably a resin fiber, and examples of the resin type of the resin fiber include polyethylene, polypropylene, polyethylene terephthalate, and nylon. The basis weight of the outer layer and the inner layer may be 15 to 50 g / m ² . The basis weight of the intermediate layer having a high foreign matter collecting property is preferably 10 to 100 g / m ² , and more preferably 15 to 50 g / m ² .

The pair of ear hooks 20a and 20a may each have an annular shape (or a closed band shape) in a plan view, or may have a shape including a ring. For wearing, the ear hook 20a can be hung on the inside of the ring of the ear hook 20a, that is, the wearer's ear is inserted into the opening 29 at the center of the ear hook 20a.

As shown in FIGS. 1 and 2, the pair of ear hooks 20a and 20a are formed as a single sheet or a continuous ear hook sheet 20 separably connected to each other at the center of the left-right direction D2. There is. Here, the single sheet refers to a form consisting of one continuous sheet. This one sheet may be a single layer or may be a laminated body in which a plurality of layers are laminated. Since the pair of ear hooks 20a and 20a are in the form of a sheet, when the ear hooks 20a are hung on the ears, they can come into surface contact with the back of the ear or the back of the earlobe, so that the burden on the ears can be reduced. can. Therefore, even if it is used for a long time, the feeling of strangeness can be reduced. Further, since the pair of ear hooks 20a and 20a are in the form of a single sheet (because they are composed of the ear hook sheets 20), the pair of ear hooks 20a and 20a can be positioned at the same time at the time of manufacturing. Therefore, it is easy to manufacture the mask.

The ear hooks 20a and 20a (ear hook sheet 20) have elasticity (detailed later), and the user pulls the ear hooks 20a and 20a to the back of the ear when wearing the mask. You can easily perform the operation of hanging it on your ear.

The ear hook sheet 20 is configured to be able to form a pair of ear hooks 20a, 20a separated by breaking at a predetermined position. More specifically, in the form of FIG. 1, the pair of ear hook portions 20a and 20a are connected by the coupling portion 28. The bonding form of the bonding portion 28 is not particularly limited, but it is preferably a bond that can be separated by pulling with a normal force of the user. For example, it may be formed as a perforation as shown in FIG. Further, the joint portion 28 may be formed by reducing the thickness of the sheet or by other means such as weakening the boundary between the pair of ear hook portions 20a and 20a or making it easier for stress to be applied. ..

As shown in FIGS. 1 to 3, a pair of single sheet-shaped ear hooks 20a, 20a, or ear hook sheets 20 are arranged so as to be overlapped with the mask main body 10. The ear hook sheet 20 may have a shape and a size that does not protrude from the mask body 10 at least in the left-right direction D1 in a plan view. With this configuration, the mask body 10 and the ear hook sheet 20 are overlapped and joined to the mask continuously without requiring complicated steps such as folding and bending of the ear hook sheet 20 at the time of manufacturing. Can be manufactured.

The pair of ear hook portions 20a and 20a are connected to the side portions (ends of D2 in the left-right direction) of the outer surface of the main body 10, respectively. That is, the outer portions of the pair of ear hooks 20a and 20a in the left-right direction D2 are joined to the main body 10, and the other parts are not joined to the main body 10. When starting to use the mask 1 according to the present embodiment, the user releases the coupling between the pair of ear hook portions 20a and 20a and separates the ear hook portions 20a and 20a from each other before wearing the mask 1. (Also referred to as a separation operation), the portions of the ear hooks 20a and 20a that are not joined to the main body 10 are opened sideways in the left-right direction D2 (also referred to as an unfolding operation).

As shown in FIGS. 1 and 3, the pair of ear hook portions 20a and 20a may be connected to both side portions of the mask main body 10 via the sheet-shaped auxiliary materials 30 and 30, respectively. By interposing the auxiliary material 30 in the connection between the ear hook portion 20a and the mask main body 10, the mask 1 can be formed without directly connecting the ear hook portion 20a and the mask main body 10. Therefore, the bond between the ear hook portion 20a and the auxiliary material 30 and the bond between the mask main body 10 and the auxiliary material 30 can be formed separately in appropriate forms. Further, it is possible to prevent a part of the ear hook portion 20a from being used for fixing to the mask main body 10. Therefore, by using the auxiliary material 30, the ear hook 20a can be moved more freely with respect to the mask body 10 as compared with the case where the ear hook 20a is directly connected to the mask body 10. The position of the ear hook portion 20a when the portion 20a is attached to the ear can be set more freely with respect to the ear.

In the form shown in FIGS. 1 to 3, the sheet-shaped ear hook portion 20a and the sheet-shaped auxiliary material 30 are overlapped and joined at the first joining portion B1. Further, the mask main body 10 and the sheet-shaped auxiliary material 30 are overlapped and joined at the second joint portion B2. In this way, by using the auxiliary material 30, it is possible to indirectly form a hard-to-break bond between the ear hook portion 20a and the mask body 10 without impairing the function and wearing feeling of each member, and a durable mask can be formed. Obtainable.

The auxiliary material 30 may be a sheet-like member extending over the vertical direction D1 of the mask 1. The length (width) of the auxiliary material 30 in the left-right direction D2 is preferably 15 to 35 mm, although it depends on the size and configuration of the entire mask 1 and the size, shape, and material of the main body 10 and the ear hook portion 20a. The basis weight of the auxiliary material 30 may be 5 to 100 g / m ² . The thickness of the auxiliary material 30 may be 100 to 1,000 μm.

The auxiliary material 30 may be formed of a non-stretchable or small material, or may be formed of a material having a certain degree of elasticity. The auxiliary material 30 may include, for example, a stretchable non-woven fabric. In that case, the auxiliary material 30 preferably has elasticity at least in the left-right direction D2, but the elasticity of the auxiliary material 30 is preferably smaller than the elasticity of the ear hook portion 20a. The auxiliary material 30 may be formed of a material whose shape can be irreversibly deformed when a force is applied.

The first joint portion B1 and the second joint portion B2 are, for example, means for joining the facing surfaces of the members by applying pressure and / or heat, for example, heat sealing, ultrasonic sealing, non-heating embossing, etc. Can be formed by. Of these, it is preferable to use a heat seal because reliable bonding is possible.

When the auxiliary material 30 is provided, the left-right direction D2 length of the ear-hanging portion sheets 20 constituting the pair of ear-hooking portions 20a, 20a may be shorter than the left-right direction D2 length of the mask 1. As a result, the outer end 21 of the left-right direction D2 of the ear hook portion 20a and the outer end 11 of the left-right direction D2 of the main body 10 can be displaced, so that the left-right direction D2 end of the main body 10 not covered by the ear hook portion 20a can be displaced. Auxiliary material 30 can be attached near the portion.

(Separation / deployment operation of ear hook)
At the start of use, the user can pinch or grip the pair of ear hooks 20a, 20a with their respective hands and pull them in opposite directions. Thereby, first, the bond of the separable connecting portion 28 can be released. If the connecting portion 28 is composed of perforations formed along the boundary line between the pair of ear hook portions 20a and 20a, the perforations are broken and both ear hook portions 20a and 20a are bordered. Can be separated along. After that, the user can open the pair of ear hooks 20a and 20a to the outside (illustrated by the arrow) in the left-right direction D2 as shown in FIG. 3 while holding the pair of ear hooks 20a and 20a, respectively.

FIG. 4 shows a state in which the pair of ear hooks 20a and 20a are opened outward from the left-right direction D2 from the state of FIG. Further, FIG. 5 shows a sectional view taken along line II-II of FIG. As shown in FIGS. 4 and 5, when the pair of ear hooks 20a and 20a are opened, the ear hooks 20a and 20a are turned inside out, that is, the main body of the ear hooks 20a and 20a in the state before the start of use. The surface facing the 10 is exposed.

After the user grasps the pair of ear hooks 20a and 20a and opens them outward in the left-right direction D2, the mask body 10 is attached so that the face side surface of the mask body 10 faces the wearer's face. It is placed on the face of the wearer, and the ear hooks 20a and 20a are hung on the wearer's ears, respectively.

In the state before the start of use (FIGS. 1 to 3), the pair of ear hooks 20a and 20a (ear hook sheets 20) in the form of a single sheet are arranged so as to overlap the mask main body 10. The pair of ear hooks 20a and 20a may be overlapped on either surface of the mask body 10, but it is preferable that the pair of ear hooks 20a and 20a are overlapped on the outer surface of the mask body 10 as shown in the illustrated form. As a result, when the mask 1 is attached, the contact with the inner surface (face side surface) of the mask body 10 can be reduced or the contact can be almost eliminated.

For example, when the user wears the mask 1 on himself / herself, the mask 1 is placed on his / her face so that the inner surface of the mask body 10 faces his / her face, and the outer surface of the mask body 10 is pressed with one hand. With the other hand, the coupling of the ear hooks 20a and 20a at the joint 28 is released, and one ear hook 20a is hung on the ear. Then, after changing one hand holding the mask body 10 to the other hand, the other ear hook portion 20a can be hung on the ear with one hand.

Further, in a state where the mask 1 is placed with the outside of the mask 1 vertically upward (the outer surface of the main body 10 is upward), the user holds the pair of ear hooks 20a and 20a by hand, respectively, in the left-right direction D2. Open to the outside. After that, while holding the pair of ear hooks 20a and 20a, the mask 1 is moved to the face of a wearer other than himself, and the mask body 10 is placed at a desired position on the wearer's face. The pair of ear hooks 20a and 20a can be hung on the wearer's ears without changing. Therefore, the mask 1 according to the present embodiment can also be suitably used when a person who has difficulty in wearing the mask by himself / herself, such as a child or a sick person, is to wear the mask.

The main body 10 may be formed with a mark 18 that enables distinction between the front and back surfaces (outer surface and inner surface) of the main body 10 by embossing, printing, sewing, or the like. The form of the mark 18 is not limited as long as it can be visually recognized by the user. As shown in FIGS. 1 and 2, the mark 18 may be a character, a number, a symbol, a figure, a logo, or the like. If the mark 18 is a character, the side on which the user can read the character correctly can be recognized as the outer surface.

(Material of ear hook and ear hook sheet)
The ear hook portion 20a or the ear hook portion sheet 20 according to the present embodiment has elasticity or elasticity as described above. FIG. 6A shows an enlarged view of the portion III in FIG. 5, that is, a cross-sectional view of the ear hook portion 20a (ear hook portion sheet 20) cut along the left-right direction D2. As shown in FIG. 6A, the ear hook portion sheet 20 (or ear hook portion 20a) may be a multilayer sheet in which a plurality of layers are laminated. In the example of FIG. 6A, the ear hook portion 20a is provided with the stretchable film (stretchable member) 5, and the first surface material 2 is attached to the first surface, which is one surface of the stretchable film 5. The second surface material 3 is arranged on the second surface, which is the surface opposite to the first surface. The ear hook portion 20a (ear hook sheet 20) does not have a structure in which the surface material is arranged on both sides of the elastic film 5 as shown in FIG. 6 (a), but has a structure in which the surface material is arranged on only one side. May have.

The elasticity of the ear hook portion 20a is mainly due to the stretchable film (stretchable member) included in the ear hook portion 20a. The stretchable member can be extended in at least one direction by applying a tensile force, and by releasing the applied tensile force (without applying an external force), the original length (natural length). It is a member having the property of returning to. Further, when the stretchable film 5 is used, that is, when the form of a film which is a continuous molded body having a substantially uniform thickness is used, a stretchable fiber structure (a sheet-like body formed by assembling fibers) is used. ) Etc., higher elasticity or extensibility, and higher stress can be obtained, so that the design range of the ear hook portion 20a is widened. In particular, the degree of freedom in designing the extension characteristics of the ear hook portion 20a is increased.

Examples of the material of the elastic film 5 include polyolefins such as polyethylene and polypropylene, polyurethane and the like. The stretchability of the stretchable film 5 is preferably one having a maximum elongation rate (elongation rate at the time of tensile break) of 3.5 to 4.0 as measured by a tensile tester. The elastic film 5 may have a function of allowing moisture to pass through.

In the example shown in FIG. 6, the stretchable film 5 is used as the stretchable member, but the stretchable member is not limited to the film-like one. For example, the ear hook portion 20a may include a thread-like stretchable body aggregate in which a plurality of thread-like stretchable bodies (or thread-like elastic bodies) such as rubber threads are juxtaposed, instead of the stretchable film, or the stretchable hot It may contain a melt adhesive. The stretchable hot melt adhesive may be arranged linearly or may be arranged in a plane shape. However, the stretchable member in the form of a film is preferable in that it is easy to handle at the time of manufacture.

As shown in FIG. 6A, when the surface materials are arranged on both sides of the elastic member 5, the first surface material 2 and the second surface material 3 may be the same or different. May be good. Further, the first surface material 2 and the second surface material 3 are preferably fiber structures. Examples of the fiber structure include non-woven fabrics, woven fabrics, knitted fabrics, etc. Among them, non-woven fabrics are preferable because they have good touch and breathability and contribute to improvement of wearing feeling. Examples of the non-woven fabric include air-through non-woven fabric, spunbond non-woven fabric, spunlace non-woven fabric, needle punch non-woven fabric, chemical bond non-woven fabric and the like. Of these, a spunbonded non-woven fabric having no fluff and high strength, a soft air-through nonwoven fabric, and the like can be appropriately selected. The fiber contained in the nonwoven fabric is preferably a resin fiber, and examples of the resin type of the resin fiber include polyethylene, polypropylene, polyethylene terephthalate, and nylon. When the first surface material 2 or the second surface material 3 is a non-woven fabric, the basis weight of the non-woven fabric may be 5 to 50 g / m ² , and particularly preferably 8 to 25 g / m ² .

In many cases, the stretchable member such as the stretchable film 5 is more likely to cause irritation or discomfort when it comes into direct contact with the wearer's face (skin) than the non-stretchable material. Therefore, it is preferable to configure the ear hook portion 20a so that the elastic member does not come into direct contact with the wearer's skin as much as possible. In the ear hook portion 20a of the present embodiment, since the elastic film 5 is covered with the first surface material 2 and the second surface material 3, it is possible to avoid direct contact between the elastic film 5 and the skin when wearing the mask. It is possible to improve the wearing feeling.

The ear hook portion 20a (ear hook portion sheet 20) as shown in FIG. 6A is obtained as follows. That is, as shown in FIG. 6B, a tensile external force T is applied to the stretchable film 5, and the stretchable film 5 is stretched from its natural length, and the first surface material 2 in a natural state that is not shrunk and The second surface material 3 is intermittently joined to each surface at a plurality of interlayer joints m. After that, by releasing the tensile external force T, the ear hook portion 20a (ear hook portion sheet 20) in the natural state shown in FIG. 6A can be obtained. The interlayer joining portion m may be a portion that joins the layers to each other with almost no change in the state of each layer (stretchable film 5, surface materials 2, 3). Further, the interlayer joint portion m may be a welded portion, and in the welded portion, the layers may be welded to each other and integrated to reduce the thickness.

The ear hook portion 20a (ear hook portion sheet 20) shown in FIG. 6A is in a natural state, that is, a state in which no external force is applied. Therefore, the stretchable film 5 is also in a natural state and has a natural length. On the other hand, the length of the joined first surface material 2 and the second surface material 3 in the left-right direction D2 is shortened as a whole. Such shortening of the length is due to the fact that the portion other than the portion joined by the plurality of interlayer joint portions m rises so as to be separated from the elastic film 5 and becomes folds (wrinkles). The first surface material 2 and the second surface material 3 are formed with a plurality of wrinkles extending substantially along the vertical direction D1 of the mask 1, and are wrinkled when viewed in cross section.

In this way, since a large number of folds are formed on the surface of the ear hook portion 20a, when the surface of the ear hook portion 20a comes into contact with the skin, the material of the ear hook portion 20a may come into contact with the entire surface of the skin. Since a space is formed between the ear hook portion 20a and the skin, the feeling of sticking to the skin can be reduced and the wearing feeling can be improved.

When the mask 1 is used, the ear hook portion 20a is mainly pulled and extended in the left-right direction D2. At this time, the extension characteristic of the ear hook portion 20a greatly affects the wearing feeling of the ear hook portion 20a. For example, if the ear hook 20a can be extended to a sufficient length with a small force, the ear hook 20a can be easily hung on the ear, and the stress generated when the ear hook 20a is attached becomes appropriate. The ear hook portion 20a can be fitted to the ear without any pain or discomfort. The elongation characteristic of the ear hook portion 20a (ear hook portion sheet 20) having the configuration as shown in FIG. 6 is a stretchable film when the surface material is bonded in the production of the ear hook portion 20a (ear hook portion sheet 20). It may depend on how many times the 5 is stretched by the tensile external force T, that is, the stretch ratio k of the stretchable film (stretchable member) 5. The extension factor k of the stretchable member in a certain ear hook portion 20a (ear hook portion sheet 20) is the length in the stretched state when the length (natural length) of the stretchable member in the natural state is 1. Is. For example, when the surface material is joined in a state where the stretchable member is stretched to twice the natural length at the time of manufacturing the ear hook portion 20a or the ear hook portion sheet 20, the stretch ratio k = 2. In other words, the elongation ratio k may be the ratio of the length L1 of the stretchable member in the stretched state at the time of joining the surface materials to the natural length L0 of the stretchable member. That is, the elongation ratio k = L1 / L0. The elongation ratio k is a value exceeding 1.

(Manufacturing of ear hooks or ear hook sheets and masks)
Here, the manufacture of the ear hook portions 20a, 20a or the ear hook portion sheet 20 will be described. FIG. 7 shows a schematic view of the mask manufacturing apparatus 300. The mask manufacturing device 300 is provided with an ear hook manufacturing device 100 upstream of the mask manufacturing device 300, and following the ear hook manufacturing device 100, the manufactured mask ear hook and other members of the mask are attached. The mask member combination device 200 for combining is provided.

The ear hook manufacturing apparatus 100 forms the elastic film band supply means 123 for supplying the elastic film band (elastic member band) 5A for forming the elastic film 5, and the first surface material 2. The first surface material band supply means 121 for supplying the surface material band 2A and the second surface material band supply means 122 for supplying the second surface material band 3A forming the second surface material 3 are provided. .. A long material, that is, an elastic film band 5A, a first surface material band 2A, and a second surface material band 3A is supplied from each supply means, and subsequently, one surface of the elastic film band 5A (first). The first surface material band 2A is overlapped on the surface), and the second surface material band 3A is overlapped on the other surface (second surface) to form the multilayer structure 6A. The multilayer structure 6A is transported in the transport direction Dt.

Here, the stretchable film band 5A is conveyed in a state of being stretched in the transport direction Dt, that is, in a state in which a tensile force (tension) is applied in the transport direction Dt. The degree of elongation of the stretchable film band 5A is controlled by the feeding speed of the stretchable film band supply means 123 and the transport means (not shown). The degree to which the stretchable film band 5A is stretched may be, for example, 1.5 to 4 times, preferably 2 to 3 times the natural length. That is, the extension factor k of the ear hook sheet 20 may be preferably 1.5 to 4, more preferably 2 to 3. On the other hand, the first surface material band 2A and the second surface material band 3A are transported in a state of having a natural length (in a state of not being pulled). Therefore, the surfaces of the first surface material band 2A and the second surface material band 3A laminated on each surface of the elastic film band 5A are in a wrinkle-free state.

Subsequently, the multilayer structure 6A is sent to the welding means 140, between the elastic film band 5A and the first surface material band 2A, and between the elastic film band 5A and the second surface material band 3A. Discontinuous interlayer joints are formed over the entire multilayer structure 6A. In this embodiment, the interlayer joint is a welded portion. The welding means 140 is preferably an ultrasonic welding portion, but may use another means such as heat welding. The plurality of discontinuous welds can be formed intermittently, for example, in a dot shape in a plan view. Further, it may be formed in a linear shape separated from each other in the transport direction Dt. The laminated body 8A can be obtained by joining the layers of the multilayer structure 6A in the welding means 140.

FIG. 7 also shows an enlarged cross-sectional view of Part IV. A plurality of interlayer joints (welded portions) m are intermittently provided between the elastic film band 5A and the first surface material band 2A, and between the elastic film band 5A and the second surface material band 3A, respectively. It is formed. The reference diameter of one welded portion m in a plan view may be 0.2 to 1.0 mm. The area of the welded portion m in a plan view may be 1.8 to 19.1% of the sheet area.

Further, the laminated body 8A is sent to the relaxing means 160. In the relaxing means 160, the tension applied to the elastic film band 5A is relaxed in the transport direction Dt. The degree to which the tension is relaxed in the relaxing means 160 is not limited, but it is preferably until the elastic film band 5A returns to its natural length. By relaxing the elastic film band 5A, the elastic film band 5A contracts. Here, the elastic film band 5A and the first surface material band 2A are bonded by the welded portion m, and the elastic film band 5A and the second surface material band 3A are also bonded by the welded portion m. Therefore, the first surface material band 2A and the second surface material band 3A shrink together with the elastic film band 5A, that is, their lengths are shortened. However, the portion not joined to the elastic film band 5A by the welded portion m does not follow the elastic film band 5A and is loosened, so that the portion rises from the surface. Therefore, a large number of small folds (wrinkles) extending along the direction orthogonal to the transport direction Dt are formed on the first surface material band 2A and the second surface material band 3A. In the first surface material band 2A and the second surface material band 3A, in the state where the folds are formed, the force to return to the original length is not generated or hardly is generated. Therefore, the stretchable film 5 is maintained at its natural length.

FIG. 7 also shows an enlarged cross-sectional view of the portion V. As shown in the figure, in the ear hook sheet band 20A, the elastic film band 5A is flat, but the first surface material band 2A and the second surface material band 3A are shrunk to form wrinkles. Further, when the ear hook sheet band 20A is viewed in a cross section obtained by cutting the first surface material band 2A and the second surface material band 3A along the transport direction Dt, continuous unevenness is formed along the transport direction Dt. There is.

Subsequently, the ear hook sheet band 20A is sent to the punching means 180. In the punching means 180, the ear hook sheet band 20A is punched by a punching die so that the shape of each ear hook sheet 20 can be obtained. In any case, the punching means 180 can be used to obtain a plurality of ear hook sheets 20, 20, ....

As described above, the ear hook sheet 20 is in a state where the elastic film band 5A having the first surface and the second surface opposite to the first surface is extended in a predetermined direction (transport direction Dt). , The first surface material band 2A and the second surface material band 3A are overlapped on the first surface and the second surface, respectively, and the elastic film band 5A and the first surface material band 2A and the second surface material band 3A are joined, respectively. Then, the laminated body 8A is obtained, the laminated body 8A is contracted in a predetermined direction (transportation direction Dt), and the laminated body 8A is cut to form a pair of ear hooks that are separably connected to each other. Manufactured by forming multiple pieces.

Instead of the stretchable film band 5A, a long material of a thread-like stretchable body aggregate in which a plurality of thread-like stretchable bodies (thread rubber or the like) are juxtaposed can also be used. In that case as well, in the same manner as described above, a plurality of filamentous stretchable aggregates are supplied in a state of being stretched at an elongation ratio k in the transport direction Dt and tensioned, and the first surface material is applied to each surface of the aggregate. The band 2A and the second surface material band 3A can be laminated. After that, in the welding means 140, the thread-like stretchable body and the first surface material band 2A may be welded, and the thread-like stretchable body and the second surface material band 3A may be welded, or the thread-like stretchable body may be sandwiched. In this way, the first surface material band 2A and the second surface material band 3A may be welded.

The ear hook sheets 20, 20, ... Are sent to the mask member combining device 200. In the mask member combination device 200, the auxiliary material band 30A is arranged on one surface of the ear hook sheet 20. The mask member combination device 200 includes a mask body band supply means 221 for supplying the mask body band 10A forming the mask body. The mask body band supply means 221 supplies the mask body band 10A to the side of the ear hook sheet 20 opposite to the side on which the auxiliary material band 30A is arranged.

After the ear hook sheet 20, the auxiliary material band 30A, and the mask main body band 10A are combined, they are joined by a joining / cutting part 240 at a predetermined position by a heat seal or the like to join the first joining part B1 and the second joining part. Part B2 (FIG. 1, FIG. 3, etc.) is formed. It is also cut following or at the same time as joining. Thereby, individual masks 1 can be obtained.

FIG. 8 schematically shows a process in which members are combined in the mask member combination device 200. That is, the mask forms (a) the ear hook sheet 20, and one auxiliary material band 30A is joined to the side portions of the two separated ear hook sheet 20 and 20, and (b) the auxiliary material band 30A is attached. The ear hook sheet 20 is indirectly bonded to the main body band 10A by joining to the outer surface of the mask main body band 10A, and (c) the auxiliary material band 30A and the mask main body band 10A are cut to form an individual mask 1. Manufactured by

(Design of ear hook)
In recent years, masks of various sizes have been provided according to the application and / or the size of the user's face. However, in the configuration as in this embodiment, the pair of ear hooks 20a and 20a are in the form of a single sheet and are overlapped with the mask body 10 so as not to protrude from the mask body 10 at least in the left-right direction D2. In order to improve the wearing feeling of the mask, it is necessary to devise the design of the ear hook portion 20a.

FIG. 9 shows a plan view of two masks having different sizes. The mask shown on the upper side of FIG. 9 is the mask 1 described with reference to FIGS. 1 to 5. On the other hand, on the lower side of FIG. 9, a mask 1S having a size smaller than that of the mask 1 is shown. The mask 1S can be provided, for example, as a mask for women or children. In FIG. 9, the detailed configuration of the mask is not shown.

As shown in FIG. 9, the mask 1S has a smaller length _wm in the left-right direction D2 of the mask main body 10 than the mask 1. In this embodiment, the length _wm of the mask body 10 in the left-right direction D2 is equal to the length of the mask in the left-right direction D2. On the other hand, the length (height) h of the mask in the vertical direction D1 is equal between the mask 1 and the mask 1S. In this way, when designing a mask with a small size, only the length _wm in the horizontal direction D2 is often reduced, but depending on the application of the mask, both the vertical direction D1 and the horizontal direction D2 may be reduced. be.

When changing the size of a mask in which a single sheet-shaped ear hook 20a, 20a (ear hook sheet 20) is superposed on the mask body 10 as in the present embodiment, the length of the ear hook 20a in the left-right direction D2 is changed. _We also need to change. As shown in FIG. 9, when reducing the length _wm size of the mask body 10 in the left-right direction _D2 , it is necessary to reduce the length we of the ear hook portion 20a in the left-right direction D2.

When reducing the size of the ear hook portion 20a, it may be inconvenient if the shape of the ear hook portion 20a is simply reduced in accordance with the reduction ratio of the mask main body 10. For example, if the ear hook portion 20a is simply reduced according to the reduction ratio of the mask body, the width of the ring of the ear hook portion 20a becomes small, and the good wearing feeling of the ear hook portion to the ear may not be sufficient. In particular, when only the length of the mask body 10 in the left-right direction D2 is reduced, there are places where the width of the ring of the ear hook portion 20a is reduced and places where the width is not changed, and the robustness of the ear hook portion is improved. Can also cause problems. Therefore, it is necessary to design the shape of the ring of the ear hook portion 20a according to the size of the mask after the change, not simply the shape reduced according to the reduction ratio.

As shown in FIG. 9, the ring of the ear hook portion 20a is located behind the wearer's ear when worn and the fixing portion 22 including the end portion in the left-right direction D2 which is directly or indirectly fixed to the mask body 10. The hook portion 24 is provided, an upper transition portion 23 that migrates from the fixed portion 22 to the hook portion 24 on the upper side of the ring, and a lower transition portion 26 that transitions from the fixed portion 22 to the hook portion 24 on the lower side of the ring. You may be. Of the divisions of this ring, when the ear hook portion 20a is stretched in the left-right direction D2 by being pulled by the user during the wearing operation, the upper side extending mainly in the left-right direction D2 is mainly stretched in the left-right direction D2. The transition unit 23 and the lower transition unit 26. In the present specification, the classification that is easily stretched by tension (upper transition portion 23 and lower transition portion 26) is referred to as a high extension portion, and the division that is difficult to be stretched by tension (fixed portion 22 and hook portion 24) is referred to as a low extension portion. Call.

The mask 1S shown in FIG. 9 is resized so that the size of the mask 1 in the left-right direction D2 is smaller than that of the mask 1. In the mask 1S, the length we of the ear hook portion 20a in the left-right direction D2 is reduced without changing the shape of the ear hook portion 20a of the mask 1 and the width _d of the ring of the ear hook portion 20a from the mask 1. ing. Therefore, in the ring of the ear hook portion 20a, the length w _e1 of the high extension portion (upper transition portion 23 and the lower transition portion 26) is set to the lengths we ₂ and we _2'of the low extension portion in the left-right direction D2. Compared to that, it has been greatly reduced. That is, in the mask 1S, the ratio of the length _we1 of the highly elongated portion to the length _wee of the ear hook portion 20a is smaller than that of the mask 1. Therefore, the ear hook portion 20a of the small size mask 1S is less likely to be stretched than the mask 1. Therefore, in designing the ear hook portion 20a, it is necessary to consider the characteristics of the material of the ear hook portion 20a so as to match the size and shape.

The present inventors have found a relationship between the configuration of the mask 1 or the configuration of the ear hook portion 20a and the extension characteristics of the ear hook portion 20a, which can obtain an excellent wearing feeling. According to this embodiment, the extension ratio k (k> 1) when manufacturing the ear hook portion 20a and the length _wee1 of the above-mentioned high extension portion in the left-right direction D2 (in the state of the unextended natural length). It was found that by making the relationship (length) approximately inversely proportional, a mask that can provide comfort to the user can be obtained both during the wearing operation and during the wearing (during wearing). More specifically, the value obtained by multiplying the extension factor k when manufacturing the ear hook portion 20a by the length _we1 (unit: mm) of the above-mentioned high extension portion in the left-right direction D2 may be 75 to 145. can. That is, k × _we1 = 75 to 145 can be set. The above k × _we1 may be preferably 88 to 117, more preferably 90 to 115, and even more preferably 92 to 113. When the value of k × w _e1 is 85 or more, the ear hook portion 20a can be easily stretched during the wearing operation, and the wearing can be continued without burdening the ears. Further, when the value of k × _we1 is 120 or less, it is possible to avoid a gap between the mask main body 10 and the face and obtain a better fit. Therefore, depending on the size of the mask 1 and the ear hook portion 20a, the ear hook portion 20a having appropriate extension characteristics can be obtained, and a mask having an excellent wearing feeling can be obtained.

The length _we1 of the highly extended portion is the length of the division of the ear hook portion 20a that extends mainly in the left-right direction D2, but more specifically, it is the longest length of the opening 29 in the left-right direction D2. Can be done. Thereby, the length _we1 of the highly elongated portion can be easily obtained. However, the maximum length of the opening 29 in the left-right direction D2 does not include the length that does not contribute to the extension. For example, when the opening 29 overlaps with the auxiliary material 30, the second joint portion B2 is formed up to the upper side or the lower side of the overlapping portion, and the ear hook portion 20a is fixed to the auxiliary material 30. Does not include the length from the edge of the opening 29 in the left-right direction D2 to the inner edge of the second joint portion B2 in the left-right direction D2 in the length _we1 of the highly extended portion.

As described above, according to this embodiment, the ear hook portions 20a and 20a having the extension characteristics according to the size of the mask 1 can be manufactured, and the mask having an excellent wearing feeling can be provided.

The length wm of the mask body 10 in the left-right direction D2 may be 120 to 190 _mm . The length h of the mask main body 10 in the vertical direction D1 may be 60 to 100 mm. Further, the length we of the ear hook portion _20a in the left-right direction D2 may be 55 to 90 mm, preferably 65 to 85 mm. In particular, according to this embodiment, even in the case of manufacturing a mask generally small, such that the length wm of the mask main body 10 in the left-right direction D2 is 165 _mm or less, particularly 160 mm or less, optimum elongation is performed. It is possible to obtain an ear hook portion 20a having characteristics. Further, even in the case of manufacturing a mask having a length we of the ear hook portion 20a in the left-right direction _D2 of about 55 to 75 mm, the ear hook portion 20a having an excellent wearing feeling can be easily obtained.

Further, in the ear hook portion 20a, the ratio value _{( we1} / we) of the length _we1 of the high extension portion in the left-right direction D2 to the length _wee of the ear hook portion in the left-right direction D2 is preferably 0. It may be .45 to 0.7, more preferably 0.5 to 0.65. The present embodiment provides a particularly excellent wearing feeling in a mask in which the ear hook portion is configured such that the value of the above ratio _{( we1} / we) is 0.65 or less, preferably 0.6 or less. Can bring.

For example, when the length w _m of the mask body 10 in the left-right direction D2 is 155 mm, the ear hook portion 20a has an extension factor of 2.35 to 2.65, although it depends on the configuration (shape) of the ear hook portion 20a. It is preferable to manufacture with.

Further, in order to improve the stability of the structure of the ear hook portion 20a and the wearing feeling, it is preferable that the width d of the ring of the ear hook portion 20a is substantially constant, and in particular, the upper transition portion 23, the hook portion 24, It is preferable that the widths of the lower transition portion 26 and the width of the lower transition portion 26 are approximately the same. Even with such a mask in which the width of the ring of the ear hook portion 20a is substantially constant, it is possible to obtain the ear hook portion 20a having optimum elongation characteristics.

One embodiment of the present invention is a method for manufacturing a mask, wherein (a) a surface material is superposed on at least one surface of the stretchable member in a state where the stretchable member is stretched in a predetermined direction at a predetermined magnification. The elastic member and the surface material are intermittently joined to obtain a laminated body, and the laminated body is relaxed in a predetermined direction and cut to form a single sheet including a pair of ear hook portions. A plurality of ear hook sheets are formed, and (b) a mask body band forming a mask body is overlapped on the two ear hook sheets separated in a predetermined direction, and the pair of ear hooks are left and right of the mask body. The ear hook sheet is bonded to the mask body band so as to be bonded to both ends in the direction, and (c) the mask body band is cut to form an individual mask, and the ear hook is formed. It has a highly stretchable portion that is easily stretched in the left-right direction when mounted, and a low-stretched portion that is difficult to stretch in the left-right direction. According to this manufacturing method, it is possible to easily manufacture a mask having an ear hook portion having optimum elongation characteristics according to the size and having an excellent wearing feeling.

Further, in the above manufacturing method, it is preferable that the value obtained by multiplying the predetermined magnification by the length (unit: mm) in the left-right direction of the highly elongated portion is 75 to 145. That is, it is preferable that the predetermined magnification is k and the length of the highly elongated portion in the left-right direction is _we1 (unit: mm), and k × _we1 = 75 to 145.

In the above manufacturing method, after (a) the ear hook sheet is formed, (b) before or after the ear hook sheet is bonded to the mask main body band, the ear hook sheet is overlapped with the adjacent ear hook sheet. As described above, the auxiliary material band serving as the auxiliary material can be joined. Further, (c) when cutting the mask main body band, the mask main body band and the auxiliary material band can be cut together.

Ear hooks with different enlargement ratios were manufactured, and masks using them were manufactured to evaluate the fit.

(Example 1)
A mask having the configuration shown in FIG. 10 was manufactured. For the production, a mask body having a non-woven fabric three-layer structure having a length w _m in the left-right direction D2 of 155 mm and having pleats (FIG. 10) was prepared. An ear hook sheet including two ear hooks having a length we of _67.5 mm in the left-right direction D2 was superposed on the mask body. The ear hook sheet is a spunbonded non-woven fabric (with a basis weight of 15 g /) on both sides of the stretchable film (made of polyolefin resin, maximum stretch ratio 4 times) by the same method as described with reference to FIGS. 7 and 8. It was formed from a material made by joining m ² ). The elongation ratio k of the material of the ear hook sheet was 2.7. Further, the length _we1 of the highly extended portion in the ear hook portion was 37.6 mm. The value obtained by multiplying the elongation ratio k by the length _we1 of the highly elongated portion was 2.7 × 37.6 = 101.52.

The auxiliary material was formed from a spunbonded non-woven fabric (with a grain of 30 g / m ² ). The ear hook and the auxiliary material were joined by a heat seal to form a joint in the left-right direction D2 over a range of 3 to 5 mm. The mask main body and the auxiliary material were also joined by heat sealing to form a joint portion in the left-right direction D2 over a range of 3 to 10 mm.

(Example 2)
A mask having the same shape and size as in Example 1 was produced in the same manner as in Example 1 except that the ear hook portion having an elongation ratio k of 2.5 was used. The value obtained by multiplying the elongation ratio k by the length _we1 of the highly elongated portion was 2.5 × 37.6 = 94.

(Example 3)
A mask having the same shape and size as in Example 1 was produced in the same manner as in Example 1 except that the ear hook portion having an elongation ratio of 2.3 was used. The value obtained by multiplying the elongation ratio k by the length _we1 of the highly elongated portion was 2.3 × 37.6 = 86.48.

Nine evaluators were asked to evaluate the masks of Examples 1 to 3, respectively. The evaluation items were "easy to wear", "easy to stretch the ear hook", "comprehensive wearing feeling", and "wearing feeling to the ear", all of which were evaluated on a 5-point scale. .. The evaluations of 9 people were arithmetically averaged for each item and used as the evaluation results. The evaluation criteria were as follows.

1: Bad 2: Somewhat bad 3: Neither can be said 4: Somewhat good 5: Good

The results are shown in FIG. It was found that a relatively good evaluation of 3.5 or more was obtained in all items in all cases. In particular, Example 2 was found to show the highest evaluation in the items of "feeling of wearing" and "feeling of wearing on the ear".

1, 1S mask 2 1st surface material 2A 1st surface material band 3 2nd surface material 3A 2nd surface material band 5 Elastic film (elastic member)
5A Elastic film band (elastic member band)
6A Multi-layer structure 8A Laminated body 10 Mask body 10A Mask body band 15 Pleated 20 Ear hook sheet 20a Ear hook 20A Ear hook sheet 22 Fixed part 23 Upper transition part 24 Hook part 26 Lower transition part 28 Separable Joint 29 Opening 30 Auxiliary material 30A Auxiliary material band 100 Mask ear hook manufacturing equipment 121 First surface material band supply means 122 Second surface material band supply means 123 Elastic film band supply means 140 Welding means 160 Relaxing means 180 Punching Means 200 Mask member combination device 221 Mask body band supply means 240 Joining / cutting part 300 Mask manufacturing equipment B1 First joining part B2 Second joining part D1 Mask vertical direction D2 Mask left / right direction Dt Transport direction

Claims (9)

With the mask body,
A mask provided with a pair of ear hooks connected to both ends of the mask body in the left-right direction.
The pair of ear hooks are formed in the form of a single sheet, and are arranged so as to overlap the mask body at least in the left-right direction without protruding from the mask body in the state before the start of use.
The ear hook has a stretchable member and a surface material joined to at least one surface of the stretchable member in a state where the stretchable member is stretched from its natural length at a predetermined magnification.
A mask in which the ear hook portion has a highly stretchable portion that is easily stretched in the left-right direction and a low stretch portion that is difficult to stretch in the left-right direction. The mask according to claim 1, wherein the predetermined magnification is k, and the length of the highly elongated portion in the left-right direction is _we1 (unit: mm), and k × _we1 = 75 to 145. The elastic member has a first surface and a second surface opposite to the first surface.
The mask according to claim 1 or 2, wherein the surface material includes a first surface material bonded to the first surface and a second surface material bonded to the second surface. The mask according to claim 3, wherein the stretchable member is a stretchable film. The mask according to claim 3 or 4, wherein the first surface material and the second surface material are made of a non-woven fabric. The mask according to any one of claims 1 to 5, wherein the ear hook portion is arranged on the outer surface of the mask body. With more sheet-shaped auxiliary materials,
The mask according to any one of claims 1 to 6, wherein the ear hook portion is bonded to the mask body via the auxiliary material. (A) With the stretchable member stretched in a predetermined direction at a predetermined magnification, a surface material is laminated on at least one surface of the stretchable member.
The elastic member and the surface material are intermittently joined to obtain a laminated body.
The laminate is relaxed in the predetermined direction,
By cutting, a plurality of single sheet-shaped ear hook sheets including a pair of ear hooks are formed.
(B) The mask body band forming the mask body is superposed on the two ear hook sheets separated in the predetermined direction, and the pair of ear hooks are coupled to both ends of the mask body in the left-right direction. As described above, the ear hook sheet is bonded to the mask body band.
(C) The mask body band is cut to form an individual mask.
A method for manufacturing a mask, wherein the ear hook portion has a highly stretchable portion that is easily stretched in the left-right direction and a low stretch portion that is difficult to stretch in the left-right direction. The method for manufacturing a mask according to claim 8, wherein the predetermined magnification is k, and the length of the highly elongated portion in the left-right direction is _we1 (unit: mm), and k × _we1 = 75 to 145.

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