TW202220570A - Mask - Google Patents

Abstract

The present invention provides a mask with excellent performance. In the mask (10), the front surface fabric (11) and the back surface fabric (12) are sewn together. The front surface fabric (11) and the back surface fabric (12) have a shape in which the upper end portion (1a) is continuous to the left and right and the portion below the upper end portion (1a) is separated to the left and right. In the front surface fabric (11) and the back surface fabric (12), the fabric portions (w1, w2) separated to the left and right are sewn at the front center (M). The upper end portion (1a) of the front surface fabric (11) and the upper end portion (1a) of the back surface fabric (12) are overlapped and sewn so that the folded portions face each other.

Description

Face mask

The present invention relates to a mask.

Traditionally, as a material for masks covering the mouth and nose, in addition to non-woven fabrics, woven fabrics such as gauze and knitted fabrics have been used. Due to the high density of the nonwoven fabric, it has a better filtering function, but a softer fabric has a better skin feel (for example, refer to Patent Document 1). prior art literature Patent Literature

Patent Document 1: Japanese Utility Model Patent No. 3221095.

The problem that the invention seeks to solve

Among the masks using fabrics, there are masks in which a plurality of fabrics are stacked and their ends are sewn together. Typically, the edges of the fabric are folded inward and sewn together to prevent unraveling.

Therefore, this means that at the edges of the mask, the number of layers of fabric increases and the thickness increases. If the edges are too thick, the mask may not fit the shape of the nose or the surface of the face and the wearer may feel uncomfortable.

The object of the present invention is to provide a mask with good fit. technical solutions to problems

One aspect of the present invention is a mask (10) in which a surface fabric (11) and an inner fabric (12) are sewn together. The shape of the surface fabric (11) and the back fabric (12) is such that the left and right sides of the upper end (1a) are continuous, and the lower part of the upper end (1a) is separated left and right. Invention effect

According to the present invention, a mask with good fit can be provided.

Hereinafter, embodiments of the mask of the present invention will be described with reference to the drawings. The configuration described below is one example (representative example) of the present invention, and the present invention is not limited to the configuration described below.

In the following description, the right side is the X1 direction in the drawing, and the left side is the X2 direction in the drawing. The upper side is the Z1 direction in the drawing, and the lower side is the Z2 direction in the drawing. The front is the Y1 direction in the drawing, and the rear is the Y2 direction in the drawing. (Face mask)

FIG. 1 is a perspective view of the mask 10 of the present embodiment. The mask 10 of this embodiment includes a main body part 1 and an ear hook part 2 . The body portion 1 covers the wearer's face and mouth. The ear-hook part 2 is hung on the wearer's ear, and the body part 1 is fixed on the wearer's face.

The mask 10 also includes a retractable strap 14 . The stretchable belt 14 may be provided on the upper end portion 1 a of the body portion 1 . An example of the stretchable tape 14 is a resin tape made of thermoplastic polyurethane such as Mobilon tape (registered trademark) or the like. (main body)

The body portion 1 has a three-dimensional shape in which the front center M of the mask 10 is protruded.

FIG. 2 shows the layered structure of the body part 1 . The body portion 1 has a multilayer structure. The main body 1 is provided with a surface fabric 11 , a filter 13 and a back fabric 12 in this order from the front to the back. The inner fabric 12 is in contact with the wearer's face.

The surface fabric 11 is the knitted fabric arranged at the front. The inner fabric 12 is the rearmost knitted fabric. The softness and smoothness of knitted fabrics are higher than that of non-woven fabrics, which makes it more comfortable to wear.

The material of the knitted fabric is not particularly limited, and may be used alone or in combination of two or more. Examples of materials that may be used include polyamides such as nylon 6 and nylon 66, polyesters such as polyethylene glycol esters, polyesters such as polyethylene, and polyolefins such as polyolefins or synthetic fibers such as polyesters.

In addition, as the material of the knitted fabric, cellulose fibers or the like having a soft touch can also be used. Examples of the cellulose fibers include cupro fibers called Cupro (for example, Bemberg (registered trademark), etc. produced by Asahi Kasei Co., Ltd.), viscose rayon, polycellulose rayon, or refined cellulose fibers, and the like.

Examples of the weave of knitted fabrics include rib fabrics, interlocking fabrics, Tianzhu cotton, Xiong Tianzhu cotton, mottled fabrics, sack fabrics, ponte fabrics, Milano rib, and ribbon weaves. From the viewpoint of wearing convenience, weft-knitted fabrics having high stretchability and high elasticity are preferred. From the viewpoint of improving the fit of the mask 10, Xiongtianzhu cotton is preferable.

The surface fabric 11 and the inner fabric 12 are preferably made of knitted fabrics with good air permeability, which can prevent the exhaled air from remaining in the mask 10 and reduce discomfort when wearing. Breathability can be enhanced by the fibers used, the fineness of the fibers or the knitted structure.

For example, knitted fabrics with a reduced proportion of cellulose fibers, such as cupro fibers, and knitted fabrics with an increased proportion of synthetic fibers, such as polyester fibers, have good air permeability and can be preferred as the knitted fabrics of the surface fabric 11 and the inner fabric 12.

Examples of knitted fabrics with excellent breathability include honeycomb nets, double-faced and mottled fabrics.

The inner fabric 12 in contact with the wearer's face may have a cool touch. By using the above-mentioned synthetic fibers such as polyamide, polyolefin, and polyurethane, the cool touch can be improved.

As a knitted fabric having a cool touch and a good touch, for example, a knitted fabric disclosed in Japanese Patent No. 61662995 can be used. This is a knitted fabric using cellulose fibers with a single yarn fineness of 0.8 to 4 dtex of more than 20% by mass, and the filling density of the knitted fabric is 0.26 to 0.5 g/m ³ . This knitted fabric also has good moisture absorption and deodorization functions.

The knitted fabric disclosed in Japanese Patent No. 6371593 is also suitable for use. The knitted fabric is a Xiongtianzhu knitted fabric formed by interweaving a composite yarn obtained by mixing cellulose fibers and synthetic fibers with a synthetic fiber yarn, and the proportion of cellulose fibers in the knitted fabric is 20% or more.

The filter 13 has a higher density than the surface fabric 11 or the inner fabric 12, which can improve the shielding rate against foreign matter such as pollen.

Although the filter 13 of the present embodiment has a single-layer structure, the filter 13 may have a multi-layer structure. The plurality of filters 13 may also be arranged in such a manner that the closer the wearer is to the higher the filtering efficiency.

From the standpoint of hygiene, the filter 13 preferably has a high bacterial filtration efficiency (Bacterial Filtration Efficiency; BFE). BFE is measured according to ASTMF 2101 standard.

From the viewpoint of suppressing the spread of pollen, the filter 13 preferably has a high pollen filtration efficiency. From the viewpoint of suppressing the spread of droplets, it is preferable that the particle filtration efficiency (Particle Filtration Efficiency; PFE) be high. PFE is measured according to the ASTMF 2299 standard.

Examples of the filter 13 include nonwoven fabrics using nanofibers made of ultrafine fibers in nanometers (nm), such as nanofibers of polytetrafluoroethylene (PTFE), and nonwoven fabrics of synthetic fibers, such as polyethylene. Vinyl and polypropylene resins. (Ear Hook)

The ear hook portion 2 is an annular band-shaped member provided on the left and right ends of the main body portion 1 . For example, the belt-shaped member is a stretchable elastic belt or the like. One end of the band-shaped member is connected to the upper side of the left and right ends of the body portion 1 , and the other end is connected to the lower side to form a ring shape. (mask manufacturing method)

The mask 10 can be formed by forming the body portion 1 and providing the ear hook portions 2 on the body portion 1 .

The body portion 1 is formed by laminating and sewing the surface fabric 11 , the filter 13 and the inner fabric 12 . The surface fabric 11 , the inner fabric 12 and the filter 13 before sewing have symmetrical shapes at the front center M.

Fig. 3 is a development view of the surface fabric. The inner fabric 12 and the filter 13 also have the same shape as the surface fabric 11 .

The surface fabric 11 is shaped such that the left and right of the upper end portion 1a at the front center M are continuous, and the left and right at the front center M are separated below the upper end portion 1a.

The separation distance d between the left and right separated fabric portions w1 and w2 becomes longer toward the bottom. Therefore, the side ends 1b of the fabric portions w1, w2 on the front center M side have a curved shape.

First, the filter 13 is laminated on the surface fabric 11 . In the case of laminating the filter 13, the side end 1b of the fabric portion w1 of the surface fabric 11 and the side end 1b of the fabric portion w2 are overlapped to face each other. At this time, the fabric portion w1 and the fabric portion w2 of the filter 13 are located on both sides of the overlapping surface fabrics 11, respectively.

Next, the side ends 1b of the laminated surface fabric 11 and the filter 13 are sewn together. In order to reduce the loose thread at the end of the thread, the side ends can be sewn together by stitching such as overlock seam and zigzag seam.

When wearing the mask 10, the suture at the side end 1b is located at the front center M. Since the side end 1b is curved, it is sewn to form a three-dimensional shape that protrudes forward along the front center M.

The sewing method of the side end 1b is preferably stretch sewing. Stretch sewing is a method in which the feed amount of the fabric is adjusted by the differential feed mechanism of the sewing machine, and the fabric is stretched while sewing.

Stretch stitching reduces the shrinkage of the fabric due to stitching and creates a naturally curved front center M with tension. In addition, wrinkles and dents appearing in the fabric around the front center M can be reduced, thereby improving the design feeling.

From the viewpoint of avoiding excessive stretching of the fabric, a stretch-preventing tape such as a woolen tape may be sewn at the seam allowance of the side end 1b.

Also in the inner fabric 12, the side end 1b of the fabric portion w1 and the side end 1b of the fabric portion w2 are sewn together. Therefore, the same three-dimensional shape as the surface fabric 11 is formed. The surface fabric 11 and the inner fabric 12 formed with a three-dimensional shape are overlapped so that the surfaces without seam allowance face each other at the front center M.

At this time, the seam allowance of the surface fabric 11 is inclined to the left or right at the front center M. The seam allowance of the back fabric 12 is inclined at the front center M in the opposite direction to the seam allowance of the surface fabric 11 . Since the seam allowances do not overlap each other, the thickness at the front center M can be reduced.

Next, the stretchable belt 14 is placed on the surface fabric 11 along the upper end of the surface fabric 11 . The surface fabric 11 and the inner fabric 12 are sewn together with stretch tapes 14 at the upper and lower ends. In order to reduce thread breakage, the sewing method of the upper and lower ends can be stitched by overlock, zigzag and other stitches.

When the upper and lower ends are sewn together, a cylindrical body portion 1 having left and right openings is obtained. The cylindrical body portion 1 is turned inside out, and the seam of the front center M is located inside the body portion 1 .

The left and right ends of the body portion 1 are folded inward. As a result, the seam can be positioned inwardly when the ends are sewn. The folded portion of the surface fabric 11 and the folded portion of the inner fabric 12 overlap to face each other. The tape member of the ear hook portion 2 is provided between the folded portions.

Next, the upper, lower, left, and right ends of the main body portion 1 are sewn together to form the suture line 3 . For example, the suture 3 is provided at a distance from the end, eg 2 mm. The surface fabric 11 and the inner fabric 12 are sewn by the sewing thread 3 . Further, the band member is sewn to the body portion 1 to form the ear loop portion 2 .

A suture line may be provided along the front center M. Since the surface fabric 11 and the inner fabric 12 are connected at the front center M by the sewing thread, the displacement of the surface fabric 11 and the inner fabric 12 during use can be prevented. It is also possible to prevent the mask 10 from being deformed by washing.

4 is a cross-sectional view along line A-A. Line A-A cuts the upper end portion 1a of the body portion 1 at the front center M. FIG. 5 is a cross-sectional view along line B-B. The line B-B is cut in the direction orthogonal to the front center M below the upper end portion 1a of the main body portion 1 .

The upper end portion 1a of the surface fabric 11 and the upper end portion 1a of the inner fabric 12 are overlapped and sewn so that their folded portions face each other. Since the filter 13 is folded back together with the surface fabric 11, the stacking number of fabrics other than the stretch belt 14 at the upper end portion 1a is at least six layers.

On the other hand, below the upper end portion 1a, the seam allowance where the surface fabric 11 and the filter 13 overlap two is inclined to the right. This seam allowance overlaps the inner fabric 12 . Therefore, to the left of the front center M, a total of 7 pieces of fabric are stacked.

The seam allowance of the overlapping two inner fabrics 12 is slanted to the left. This seam allowance is laminated on the surface fabric 11 and the filter 13 . So, on the right, a total of 5 fabrics are stacked.

If the left and right sides of the upper end 1a at the front center M are not continuous, but separated in the same way as the area below the upper end 1a, the result of the folding is that the number of layers of fabric at the upper end 1a is that of the upper end 1a Twice the area below. In other words, on the right side of the front center M, a total of 14 fabrics are stacked, and a total of 10 fabrics are stacked on the left side.

As described above, according to the present embodiment in which the left and right fabrics are continuous at the upper end portion 1a, the number of fabrics to be stacked on the upper end portion 1a can be reduced by half, and the fabrics can be thinned. The thinner upper end portion 1a is easily deformed to fit the shape of the protruding nose and curved cheeks, and adheres along the uneven face line. Therefore, it is possible to provide the mask 10 excellent in fit without providing a wire or the like in the portion in contact with the nose.

The area of the upper end portion 1a can be appropriately set. For example, the upper end portion 1 a is an area approximately 0.5 to 3 cm away from the upper end of the main body portion 1 . Among them, the upper end portion 1a is preferably an area of 0.7 to 1.5 cm from the upper end. If it is more than 0.7cm from the upper end, it is easy to obtain sufficient fit; if it is less than 1.5cm from the upper end, it is easy to form a space that is easy to breathe, and at the same time avoid excessive adhesion.

The dimensions of the surface fabric 11, the filter 13, and the inner fabric 12 can be determined by considering the dimensions of the area of the upper end portion 1a and the dimensions of the seam allowance.

As described above, according to the present embodiment, the front fabric 11, the back fabric 12, and the filter 13 have a shape in which the left and right sides of the upper end 1a are continuous, and the left and right are separated below the upper end 1a. In the mask 10, the left and right separated fabric portions w1 and w2 are sewn at the front center M.

Since the number of overlapping fabrics is small and thin at the upper end 1a where the fabric is not separated from left to right, the upper end 1a more easily conforms to the shape of a protruding nose and curved cheeks, and follows uneven facial lines. Therefore, the mask 10 with good fit can be provided.

If the upper end portion 1a is thin, it becomes soft, so when the mask 10 removed from the face is placed on a table, the mask 10 is easily folded by its own weight. The back surface of the mask 10 in contact with the face is less likely to be exposed, so it is more hygienic.

In addition, a stretchable band 14 is provided on the upper end portion 1a. The stretchable strap 14 makes it easier for the upper end 1a of the main body 1 to fit on the curved surfaces of the nose and cheeks. In addition, the stretch band 14 increases the tension, which makes it easier for the fabric under the upper end 1a to hang to the front side. The mask 10 is made more comfortable to wear because the space around the mouth is easily created and adhesion due to breathing is reduced.

The main body 1 of the mask 10 is made of knitted fabric and can be washed. It remains hygienic even when dirt is removed and reused.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various changes and modifications are possible within the scope of the present invention.

For example, the upper end portion 1a of the surface fabric 11 and the upper end portion 1a of the back fabric 12 may be bonded by thermocompression. In the case of thermocompression bonding, the edges of the fabric are not frayed, so there is no need to fold back the upper end 1a so that the seam allowance is on the inside.

Therefore, the number of overlapping fabrics of the upper end portion 1a can be reduced to half of that at the time of sewing. Since the upper end portion 1a is thinned and the adhesion to the nose is improved, the mask 10 with better fit can be provided.

The surface fabric 11 and the inner fabric 12 are preferably selected from materials that are easily thermocompressible, such as polypropylene or other thermoplastics.

1: Main body 1a: upper end 1b: side end 2: ear hook 3: Suture 10: Masks 11: Surface Fabric 12: Inside Fabric 13: Filter 14: Telescopic belt M: front center w1: fabric part w2: fabric part X1: direction X2: direction Y1: direction Y2: direction Z1: direction Z2: direction

Fig. 1 is a perspective view of the mask of the present embodiment. FIG. 2 is an exploded view of the layered structure of the body portion. Fig. 3 is a development view of the surface fabric. 4 is a cross-sectional view of the upper end portion along line A-A. 5 is a cross-sectional view below the upper end along line B-B.

1: Main body

1a: upper end

2: ear hook

3: Suture

10: Masks

14: Telescopic belt

M: front center

w1: fabric part

w2: fabric part

X1: direction

X2: direction

Y1: direction

Y2: direction

Z1: direction

Z2: direction

Claims (6)

A mask (10), characterized in that: the mask is sewn together by a surface fabric (11) and an inner fabric (12); a filter is provided between the surface fabric (11) and the inner fabric (12) (13); the surface fabric (11), the filter (13) and the inner fabric (12) are: have an upper end (1a) that is continuous from left to right, and the lower part of the upper end (1a) is The shape of left and right separation; the left and right separation is two fabric parts (w1, w2), which are sewn together at the front center (M); the surface fabric (11) and the filter (13) are: the said fabric parts (w1, w2) overlap each other; one of said fabric parts (w1, w2) is folded back at said front center (M) and sewn together with the other said fabric part (w1, w2); Said inner fabric (12) is: one of said fabric parts (w1, w2) folded back at said front center (M) and sewn together with the other said fabric part (w1, w2); said The hem of the back fabric (12) is arranged in the opposite direction to the hem of the surface fabric (11) and the filter (13) with respect to the front center (M). The mask (10) of claim 1, wherein: the upper end (1a) of the surface fabric (11) and the upper end (1a) of the inner fabric (12) are overlapped and sewn so that their folded parts face each other . The mask (10) of claim 2, wherein: the filter (13) is folded back together with the surface fabric (11) at the upper end (1a), and is sewn onto the inner fabric (12). The mask (10) of claim 3, wherein: the number of fabrics stacked on the upper end portion (1a) is at least six. The mask (10) of claim 1, wherein: the upper end (1a) of the surface fabric (11) and the upper end (1a) of the inner fabric (12) are joined by thermocompression bonding. The mask (10) according to any one of claims 1 to 5, wherein: the upper end portion (1a) is provided with a stretchable belt (14).

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