TWI789049B - 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 invention relates to a mask.

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

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

The problem to be solved by the invention

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

So this means that at the edge of the mask, there are more layers of fabric and more thickness. 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 means to solve problems

One aspect of the invention is a mask (10) in which the face fabric (11) and the inner fabric (12) are sewn together. The shape of the surface fabric (11) and the inner fabric (12) is that the left and right sides of the upper end (1a) are continuous, and the left and right sides of the upper end (1a) are separated. 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 drawings, and the left side is the X2 direction in the drawings. 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 back is the Y2 direction in the drawing. (Face mask)

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

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

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

FIG. 2 shows the layered structure of the body portion 1 . The main body portion 1 has a multilayer structure. The main body part 1 is provided with a surface fabric 11, a filter 13 and an inner fabric 12 sequentially 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 knitted fabric arranged at the rearmost. The softness and smoothness of knitted fabric are higher than that of non-woven fabric, 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 can be used include polyamide such as nylon 6 and nylon 66, polyester such as polyethylene glycol ester, polyester such as polyethylene, and polyolefin such as polyolefin or synthetic fiber such as polyester.

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

Examples of weaves for knitted fabrics include weaves such as rib, interlock, geranium, bear geranium, mottled, sack, punt, Milano, and ribbon. From the viewpoint of wearing convenience, weft-knitted fabrics having high stretchability and high elasticity are preferable. From the viewpoint of improving the fit of the mask 10, kuma kuma 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 exhaled air from staying in the mouth mask 10 and reduce discomfort when worn. Breathability can be improved by the fibers used, the fineness of the fibers or the knit structure.

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

Examples of knitted fabrics with excellent air permeability include honeycomb mesh, double face and mottled fabrics.

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

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

Knitted fabrics disclosed in Japanese Patent No. 6371593 are also suitable for use. The knitted fabric is a Xiong Tianzhu knitted fabric formed by interweaving composite yarn formed by mixing cellulose fiber and synthetic fiber and yarn of synthetic fiber, and the proportion of cellulose fiber in the knitted fabric is more than 20%.

The filter 13 has a higher density than the surface fabric 11 or the inner fabric 12, which can improve the shielding rate of 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 be arranged so that the closer to the wearer, the higher the filtering efficiency.

From a hygienic viewpoint, the filter 13 preferably has a high bacterial filtration efficiency (Bacterial Filtration Efficiency; BFE). BFE is measured according to the ASTM F 2101 standard.

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

Examples of the filter 13 include a nonwoven fabric using nanofibers made of ultrafine fibers in units of nanometers (nm), such as nanofibers of polytetrafluoroethylene (PTFE), and a nonwoven fabric of synthetic fibers such as polytetrafluoroethylene (PTFE). Vinyl and polypropylene resins. (Earhook)

The ear hook portion 2 is an endless belt-shaped member provided at both left and right ends of the main body portion 1 . For example, the belt-shaped member is a stretchable belt or the like. One end of the belt member is connected to the upper side of the left and right ends of the body part 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 a body part 1 and providing an ear hook part 2 on the body part 1 .

The body portion 1 is formed by laminating and sewing a surface fabric 11, a filter 13, and an 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.

Figure 3 is an expanded view of the surface fabric. The inner fabric 12 and the filter 13 also have the same shape as the surface fabric 11 .

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

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 curved shapes.

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

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

When the mask 10 is worn, the seams at the side ends 1b are located at the front center M. Since the side end 1b is curved, it is sewn into a three-dimensional shape protruding forward along the front center M.

The sewing method of the side end 1b is preferably stretch sewing. Stretch sewing is a method of sewing while stretching the fabric by adjusting the feeding amount of the fabric through the differential feeding mechanism of the sewing machine.

Stretch sewing reduces fabric shrinkage due to sewing and creates a naturally curved front center M with tension. In addition, it is possible to reduce wrinkles and dents occurring in the fabric around the front center M, thereby improving the sense of design.

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 back fabric 12 formed in a three-dimensional shape are overlapped such 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. As shown in FIG. The seam allowance of the inner fabric 12 is inclined at the front center M in a direction opposite 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 stretch 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 straps 14 at the upper and lower ends. In order to reduce thread breakage, the sewing method of the upper end and the lower end can be sewn with stitches such as overlock seam and zigzag seam.

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

The left and right ends of the main body part 1 are folded inward. As a result, the seam allowance can be positioned inwardly when the ends are stitched. 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 disposed between the folded portions.

Next, the upper, lower, left, and right ends of the main body portion 1 are sewn together to form suture lines 3 . For example, the suture 3 is provided at a position separated from the end by a certain distance, for example, 2 mm. The surface fabric 11 and the inner fabric 12 are sewn together by a sewing thread 3 . Furthermore, a strap member is sewn to the body portion 1 to form the earhook portion 2 .

A suture may be placed 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 surface fabric 11 and the inner fabric 12 can be prevented from being displaced during use. It can also prevent the mask 10 from deforming due to washing.

Fig. 4 is a 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. As shown in FIG. Fig. 5 is a sectional view along line B-B. The line B-B is cut in a direction perpendicular to the front center M below the upper end 1 a of the main body 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 stacked number of fabrics at the upper end 1a other than the stretch band 14 is at least six layers.

On the other hand, in the lower part of the upper end part 1a, the hem where the top fabric 11 and the filter 13 overlap two is inclined to the right. This seam allowance overlaps the inner fabric 12 . So, to the left of the front center M, a total of 7 pieces of fabric are stacked.

The seam allowances of the overlapping two inner fabrics 12 are inclined to the left. The seam allowance is laminated on the face fabric 11 and the filter 13 . So, on the right side, a total of 5 pieces of fabric are stacked.

If the upper end 1a is not continuous to the left and right at the front center M, but separates in the same way as the area below the upper end 1a, the result of the fold is that the number of layers of fabric at the upper end 1a is the upper end 1a double the area below. In other words, on the right side of the front center M, a total of 14 pieces of fabric are stacked, while on the left side a total of 10 pieces of fabric are stacked.

As described above, according to the present embodiment in which the left and right fabrics are continuous at the upper end 1a, the number of fabrics laminated at the upper end 1a can be halved and the fabric can be thinned. The thinner upper end portion 1a is easily deformed to fit the shape of a protruding nose and curved cheeks, and adheres along uneven face lines. Therefore, it is possible to provide the mask 10 with excellent fit without providing a metal wire or the like at 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 a region 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 while avoiding 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 1a and the dimensions of the seam allowance.

As described above, according to the present embodiment, the top fabric 11, the back fabric 12, and the filter 13 have a shape in which the left and right sides of the upper end portion 1a are continuous and the left and right sides are separated below the upper end portion 1a. In the mask 10, the left and right divided 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 left and right, the upper end 1a is more likely to conform to the shape of a protruding nose and curved cheeks, and follow uneven facial lines. Therefore, the mask 10 with favorable fit can be provided.

If the upper end portion 1a is thinner, 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 side of the mask 10 that is in contact with the face is difficult to expose, so it is more hygienic.

Moreover, the stretchable belt 14 is provided in the upper end part 1a. The elastic band 14 makes it easier to fit the upper end 1a of the main body 1 to the curved surfaces of the nose and cheeks. Furthermore, the stretch strap 14 increases the tension, which makes it easier for the fabric below the upper end 1a to hang to the front side. Since the space around the mouth is easily formed and the adhesion caused by breathing is reduced, the wearing of the mask 10 is more comfortable.

The body part 1 of the mask 10 is made of knitted fabric and can be cleaned. It can be kept hygienic even after removing dirt and reusing it.

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 inner fabric 12 may be bonded by heat pressing. 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 to bring the seam allowance on the inside.

Therefore, the number of overlapped fabrics of the upper end portion 1a can be reduced to half that of sewing. Since the upper end portion 1a is thinned and the adhesion to the nose is improved, it is possible to provide the mask 10 with better fit.

The surface fabric 11 and the inner fabric 12 are preferably selected from materials that are easy to be thermally compressed, such as polypropylene or other thermoplastics.

1: Main body 1a: upper end 1b: side end 2: Earhook 3: suture 10: Mask 11: surface fabric 12: inner 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 the perspective view of the mask of the present embodiment. Fig. 2 is an exploded view of the layered structure of the body portion. Figure 3 is an expanded view of the surface fabric. Fig. 4 is a sectional view of the upper end along the line A-A. Fig. 5 is a sectional view below the upper end along line B-B.

1: Main body

1a: upper end

2: Earhook

3: suture

10: Mask

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 arranged between the surface fabric (11) and the inner fabric (12) (13); the surface fabric (11), the filter (13) and the inner fabric (12) are: there is a continuous upper end (1a) left and right, and the bottom of the upper end (1a) is The shape of the left and right separation; the left and right separation are two fabric parts (w1, w2), which are stitched together at the front center (M); the surface fabric (11) and the filter (13) are: the said fabric portions (w1, w2) overlap each other; one of said fabric portions (w1, w2) is folded back at said front center (M) and sewn together with the other said fabric portion (w1, w2); said inner fabric (12) is: 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 The seams of the inner fabric (12) are arranged with respect to the front center (M) in the opposite direction to the seams of the surface fabric (11) and the filter (13). As the mask (10) of claim 1, wherein: the upper end (1a) of the surface fabric (11) overlaps and sews the upper end (1a) of the inner fabric (12), so that its folded parts face each other . The mask (10) according to claim 2, wherein: the filter (13) is folded back together with the surface fabric (11) at the upper end (1a), and is sewn on the inner fabric (12). The mask (10) according to claim 3, wherein: the number of fabrics stacked at the upper end (1a) is at least six. The mask (10) according to claim 1, wherein: the upper end (1a) of the surface fabric (11) and the upper end (1a) of the inner fabric (12) are bonded by thermocompression. 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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