JP7008375B1 - Masks and mask manufacturing methods - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mask having an excellent effect of preventing splashing. SOLUTION: The mask is provided with a mask main body 2 that covers the wearer's mouth and nostrils, and ear hooks 3 for hanging the wearer's ears on the left and right sides of the mask main body 2, respectively. A shielding portion 5 for blocking the ventilation of the mask is provided in the center of 2, and the shielding portion 5 is formed by applying a resin to the mask main body portion 2, and when the mask is worn, the wearer's nostrils and mouth are shielded portions. It is characterized by being covered with 5. [Selection diagram] Fig. 3

Description

The present invention relates to a mask that suppresses the spread of droplets of sneezing and coughing.

Conventionally, a mask covering the nose and mouth has been used to prevent the invasion of pollen and viruses, and to prevent the spread of droplets due to sneezing and coughing. The mask has a main body portion that covers the nose and mouth and an ear hook portion. Disposable masks are generally recognized from a hygienic point of view, but masks that can be used repeatedly by washing have also been proposed.

A commonly known mask is composed of a piece of cloth that covers the nose and mouth and left and right ear hooks. In addition, the mask body that covers the nose and mouth is the nose. In some cases, two pieces of fabric are sewn or glued together to match the line of the mouth. The mask made by joining these two pieces of cloth has a feature that the mouth portion becomes three-dimensional when worn and the space around the mouth becomes wider.

Nonwoven fabric is used as the material of the mask. In addition, fabrics made of woven fabrics and knitted fabrics may be used. Regardless of the material of the mask, it is configured so that it is possible to breathe while wearing the mask, and breathability is ensured as a structure having gaps in the non-woven fabric or cloth. However, since pollen and viruses pass through this gap, the effect of preventing these invasions when worn may be reduced depending on the size and number of gaps.

Therefore, a mask with pollen countermeasures and virus countermeasures applied to the mask body has been proposed. If it is a non-woven mask, use multiple sheets in layers to eliminate holes that penetrate from the front to the back, and if it is a cloth mask, increase the knitting density and reduce the gap. It has been. Of course, it is also considered to stack the fabrics to make them double or triple.

In addition, for example, in Patent Document 1, as a measure against pollen, there is a method of using the property of pollen to be adsorbed by static electricity, attaching a charged sheet to the mask body, and preventing pollen from entering the body by the adsorption action by static electricity. It has been disclosed.

Further, as a virus countermeasure, a method of adhering a substance having an antibacterial or bactericidal action to a fiber or a cloth has been proposed (see, for example, Patent Document 2).

Utility Model Registration No. 3051129 Japanese Unexamined Patent Publication No. 2005-177320

Non-woven masks are said to have a high filter performance effect on the material itself. However, there is a problem that pollen or the like invades through the gap between the face and the mask and the effect of the filter performance of the non-woven fabric cannot be obtained unless the three-dimensional shape of the face is firmly adhered to when worn. In addition, the non-woven fabric mask has a problem that it is not soft to the touch and is not suitable for long-term wearing.

The gauze mask has a problem that the cloth used and the gauze have a coarse mesh and the filter effect is inferior. Further, in the cloth mask, when a high-density cloth is used, the filter effect is higher than that of the gauze mask, but when used by one sheet, the filter effect is inferior to that of the non-woven fabric mask. When multiple sheets are stacked, the filter effect of the fabric itself becomes high, but the flexibility deteriorates and the adhesion to the face deteriorates.

Since urethane masks are foamed to ensure breathability, they have a filter effect equal to or less than that of a single cloth mask made of high-density cloth for their thickness, and there is a problem that they are not as good as non-woven fabric masks. be.

Therefore, the present invention has been made in view of such problems, and an object thereof is to provide a mask having an excellent effect of preventing splashing, such as adhesion of a cloth mask, comfort to the touch, and repetition. It is also an object of the present invention to provide a mask having a splash-preventing effect that is as good as that of a non-woven fabric mask while maintaining a usable economy. Further, it is an object of the present invention to provide a method for manufacturing such a mask.

In order to solve the above problems, the mask according to the present invention includes a mask main body portion that covers the wearer's mouth and nostrils, and ear hook portions for hanging the wearer's ears on the left and right sides of the mask main body portion, respectively. The mask is provided with a shielding portion that blocks the ventilation of the mask at the center of the mask main body, and the nostrils and mouth of the wearer are covered by the shielding portion when the mask is worn.

Here, the shielding portion is characterized in that it is formed by applying a resin to the mask main body portion.
The upper side of the mask body is located near the lower part of the orbit and the center of the cheekbone of the wearer, the left and right ends of the mask body are located at the masseter muscle of the wearer, and the lower side of the mask body is. , Preferably located near the lower part of the wearer's chin and the posterior part of the mandible.

Here, the mask main body may be made of woven fabric, knitted fabric, or urethane foam.

Further, in the mask main body portion, it is preferable that a rod-shaped or flat plate-shaped core material having flexibility is arranged at the center portion in the width direction of the mask main body portion.

Further, the present invention is a method for manufacturing a mask, which comprises a mask main body portion that covers the mouth and nose, and ear hook portions provided on the left and right sides of the mask main body portion, and constitutes the mask main body portion. Includes a dough cutting step of cutting the dough to be cut, and a shielding portion forming step of applying a resin to the position of the cut dough at the center of the mask main body to form a shielding portion that blocks the ventilation of the mask. It can also be configured to be characterized by.

According to the mask according to the present invention, it is possible to realize a mask having an excellent effect of preventing splashing.

It is a side view of the mask which concerns on this invention. It is a perspective view of the mask which concerns on this invention. It is a front view which shows the state which wore the mask which concerns on this invention. It is a side view which shows the state of wearing the mask which concerns on this invention. It is an enlarged photograph of the shielding part of the mask which concerns on this invention. It is another enlarged photograph of the shielding part of the mask which concerns on this invention. It is an image which shows the test result of the splash scattering test when the mask is not worn. It is an image which shows the test result of the splashing test when wearing a urethane mask. It is an image which shows the test result of the splashing test when wearing a cloth mask. It is an image which shows the test result of the splashing test when wearing a non-woven fabric mask. It is an image which shows the test result of the splashing test when wearing the mask which concerns on this invention.

Hereinafter, the mask according to the present invention will be described based on the embodiments.

1 to 4 are views showing a mask according to the present invention, FIG. 1 is a side view, FIG. 2 is a perspective view, FIG. 3 is a front view showing a worn state, and FIG. 4 shows a worn state. It is a side view.

The mask 1 of the present embodiment includes a mask main body portion 2 formed by joining two pieces of cloth together, and an ear hook portion 3. The two fabrics that form the mask body 2 are cut so that they have a symmetrical shape, and the left and right ends of the two fabrics have ear hooks 3 for hooking on the wearer's ears when worn. Each is formed. The two fabrics on the left and right are joined together at the center of the mask 1 in the width direction (left and right).

The mask main body 2 is the main body of the mask 1 that covers the nose and mouth, and the two left and right fabrics are joined by adhesion with an adhesive, sewing, etc., and the width direction (the joint portion to be joined) Left and right) A rod-shaped or flat plate-shaped core material 4 is arranged at the center.

The core material 4 is made of a flexible material, and it is preferable to use a material that is difficult to bend. If it bends, it may be composed of a synthetic resin (for example, polyamide), or it may be a cured adhesive such as a reactive hot melt. Further, even if it is a metal, it is also possible to use a twisted iron wire or the like. Since the core material 4 has flexibility, the core material 4 can be bent according to the elongation of the mask main body 2 to maintain high adhesion, and the mask 1 is hard to bend, so that the appearance of a beautiful curve is clean. Can be maintained.

Further, a resin is applied to the central portion of the mask main body portion 2 to form a shielding portion 5. The shielding portion 5 closes the gap of the mask main body portion 2 to block airflow. As a result, the mask 1 of the present embodiment can exhibit an excellent effect of preventing splashing because the nostrils and mouth of the wearer are covered by the shielding portion 5 when the mask 1 is worn.

The shielding portion 5 is a shaded portion in FIGS. 1 to 4, and is formed in a vertically elongated region in the central portion of the mask main body portion 2. The shielding portion 5 may cover the nostrils and the entire mouth, but it is sufficient that the shielding portion 5 covers 80% or more of the width of the mouth with the mouth closed, and the shielding portion 5 is coated with resin. The area where the lips are formed may be formed so that the edges of the lips slightly protrude. This is because the shape of the mouth when sneezing or coughing is similar to that when uttering the sound of "o", not when uttering the sound of "i". The narrower the shielding portion 5, the easier it is to breathe, and the wider the unapplied area of the resin, the easier it is to breathe.

The resin constituting the shielding portion 5 is, for example, an acrylic resin, and other resins such as polyurethane and polyamide can also be used. The resin is flexible and may be used to close gaps between stitches and gaps such as non-woven fabric. The shielding portion 5 will be described in detail later.

The fabric that constitutes the mask body 2 is made of synthetic fibers, and the mask 1 uses a knitted fabric that contains nylon and polyurethane to give the mask body 2 elasticity. There is.

The fabric used here has an extensibility of 25 mm and is 100% stretchable at 1.5 kgf, and the mask main body 2 has the above-mentioned extensibility in the left-right direction.

In order to suppress the invasion of pollen, the course × well is preferably 5000 or more, and more preferably 8000 or more. In the case of woven fabrics, the thread count is preferably 500 or more.

In the mask 1 of the present embodiment, nylon and polyurethane are used, but polyester, acrylic, or the like can be used as the synthetic fiber in addition to nylon.

The knitting structure of the fabric constituting the mask 1 of the present embodiment is a plain cord for nylon and a second stitch for polyurethane.

In the above knitting structure, threads are ejected from one stitch in multiple directions, and the gap between the stitches is smaller than that of the other knitting structure.

In the case of horizontal knitting, a double knit such as an interlock is preferable.

The procedure for creating the mask 1 of the present embodiment is as follows.
First, the two pieces of cloth to be the mask main body 2 are cut so as to have a symmetrical shape, and at the same time, a hole for the ear hook 3 is cut to create a hole for the ear hook 3 (main body cloth cutting step).

Next, a resin is applied to each of the two cut fabrics by a screen coating method to form the shielding portion 5 (shielding portion forming step).

5 and 6 show enlarged photographs of the shielding portion 5 formed by applying resin to the mask main body portion 2.

FIG. 5 shows the surface of the fabric in focus, and FIG. 6 shows the depth of the fabric in focus.

In FIG. 5, there are a portion where the resin covers the gap on the surface of the fabric and a portion where the resin does not cover the gap, but even in the portion where the resin does not cover the gap, as can be seen in FIG. 6, the resin covers the gap at the back of the fabric. Therefore, even when coughing or sneezing, the shielding portion 5 does not allow the droplets to pass through.

Here, an example is shown in which the viscosity of the acrylic resin at the time of application is 60,000 cps. The viscosity may be such that a film can be formed, and a resin coating film can be formed in the range of 30,000 cps to 100,000 cps to form the shielding portion 5.

After that, the adhesive is applied to one of the two fabrics constituting the mask main body 2. The fabrics are joined together at the center of the mask 1 in the width direction, and the adhesive is applied so that the center becomes the joint. Then, the dough coated with the adhesive and the rod-shaped core material 4 are adhered (core material bonding step). When the dough and the rod-shaped core material 4 are bonded, the core material 4 is bent and bonded so as to follow the shape of the outer edge of the central portion of the mask 1. The shape of the outer edge of the central portion is a curved shape on the left side shown in FIGS. 1 and 4, and is a shape curved outward (opposite to the face) from the tip of the nose to the chin of the wearer of the mask 1.

After that, an adhesive is similarly applied to the remaining one of the fabrics so that the central portion becomes the joint portion, the two fabrics are overlapped, and heat pressing is performed to create the mask main body portion 2 (mask main body portion creating step). ).

In this way, the mask 1 of the present embodiment is completed.

Here, a polyurethane-based hot-melt adhesive was used as the adhesive, but it is also possible to use a hot-melt hot-melt adhesive such as a polyamide-based hot-melt adhesive or a reactive hot-melt adhesive. Is.

In addition, although the creation was performed using only adhesion this time, sewing may be incorporated and joined when joining the two fabrics.

The completed mask 1 has a structure in which two pieces of cloth are bonded together at the center, and the center of the bonded area is convex, so the mask body is pulled to the left and right when worn, resulting in the mouth. Space is constructed in.

Further, since the core material 4 has flexibility, when worn, the core material 4 bends according to the elongation of the mask body, so that the adhesion is high.

The fabric used for this mask is soft, so it easily adapts to the unevenness of the face, and because it uses elastic fabric, it can be applied to the face like a non-woven mask or gauze mask. Since it is not necessary to apply tension only to the ear hook 3 in order to fit it, the ear is not burdened, and if an appropriate size is used, the ear is less likely to hurt even if it is used for a long time.

In the mask 1 of the present embodiment, resin is applied to the mask main body portion 2, and there is no gap in the cloth in the portion where the resin is applied to form the shielding portion 5, and the spray spreads when coughing or sneezing. It is possible to prevent breathing through the gaps in the fabric in the part where the resin is not applied, so the structure is not stuffy even when worn.

The direction in which the droplets diffuse is vigorous in the straight direction from the front of the face, and it is difficult for the droplets to spread laterally. In addition, the droplets prevented from scattering by the mask 1 try to spread in the lateral direction, but since the momentum is weakened, even if the cloth is not coated with the resin, it will almost pass through if it is a dense cloth. Never. Therefore, in the mask 1 of the present embodiment in which the nose and the mouth are covered with the shielding portion 5 formed by applying the resin at the time of wearing, the effect that the droplets do not diffuse to the outside is high.

Here, the upper side of the mask body 2 is located near the lower part of the orbit and the center of the cheekbone of the wearer, the left and right ends of the mask body 2 are located at the masseter muscle of the wearer, and the lower side is the lower part of the wearer's chin. And those located near the posterior part of the lower jaw are preferable. In this way, the upper side of the mask body 2 covers the lower part of the orbit of the wearer and the vicinity of the center of the cheekbone, and the left-right direction of the mask body 2 covers the position of the mask body 2 to the extent that it touches the masseter muscle of the wearer. By forming a shielding portion 5 in the central portion of the mask main body 2 having a range covering the lower part of the wearer's otogai and the posterior part of the lower jaw, droplets when coughing or sneezing fly forward. Can be prevented and the leakage of droplets in the left-right direction can be reduced. On the flip side, if the size of the mask 1 is small, it is possible to prevent the droplets from coughing or sneezing from flying forward, but the leakage in the left-right direction will increase. However, by forming the shielding portion 5 in the central portion of the mask main body portion 2, a certain effect can be obtained as a suppression of droplets when coughing or sneezing.

As described above, in the mask of the present embodiment, resin is applied to the main body portion, and since there is no gap between the non-woven fabric and the fabric in the portion coated with the resin, the spread of droplets due to sneezing or coughing of the mask wearer. Has a high preventive effect. In addition, since it is possible to breathe through the gaps in the uncoated fabric portion, the structure is not stuffy. Further, since the mask body thus obtained is made of nylon and polyurethane cloth, it feels good on the skin and is more comfortable to wear than the non-woven fabric mask. In addition, it is economically advantageous because it can be washed and used repeatedly.

FIGS. 7 to 11 show images showing the test results of the droplet scattering test, more specifically, images of the scattering state of the droplets when sneezing.

7 is when the mask is not worn, FIG. 8 is when the urethane mask is worn, FIG. 9 is when the cloth mask is worn, FIG. 10 is when the non-woven fabric mask is worn, and FIG. 11 is when the mask 1 of the present embodiment is worn.

The test method was performed by injecting 0.04 ± 0.001 g of simulated saliva with 0.4 MPa compressed air from the mouth of the mannequin and taking a picture of the state when artificial droplets were blown off with a high-speed camera.
As can be read from FIG. 11, the mask 1 of the present embodiment shows the same effect of suppressing droplet scattering as the non-woven fabric mask, which is said to have a high filter effect.

The mask according to the present invention has been described above based on the embodiments, but the present invention is not limited thereto, and various design changes can be made within the range where the object of the present invention can be achieved and the gist of the present invention is not deviated. Is possible, and all of them are included in the scope of the present invention.

For example, in the above embodiment, the example in which the shielding portion is formed by coating with resin has been described, but in addition to forming by coating with resin, the shielding portion may be formed by attaching a non-breathable sheet or film.

In addition, although an example of forming the mask main body by laminating two pieces of cloth has been described, it may be made of one piece of cloth, and even if it is made of one piece of cloth, splashes during coughing or sneezing may occur. The effect of suppressing scattering can be obtained.

Further, other than the used cloth, the mask main body portion may be formed of urethane foam such as a urethane mask, and the corresponding portion may be coated with resin to form a shielding portion.

In addition, the part of the mask body that is located near the wearer's cheeks to the ear hook when worn is made of elastic fabric, and the part located around the wearer's nose and mouth is stretched. It may be configured to be composed of no fabric.

The mask according to the present invention is useful as a sanitary mask.

1 Mask 2 Mask body 3 Ear hook part 4 Core material 5 Shielding part

Claims (4)

A mask provided with a mask main body that covers the wearer's mouth and nostrils, and ear hooks for hanging the wearer's ears on the left and right sides of the mask main body.
The mask main body is composed of a knitting structure having a course × well of 5000 or more, which is a combination of a plain cord and a second stitch.
Formed by applying resin to the center of the mask body, it has a shielding part that blocks the ventilation of the mask.
When the mask is worn, the wearer's nostrils and mouth are covered by the shield.
The left and right ends of the mask body are located on the masseter muscle of the wearer.
The upper side of the mask body is curved downward from the tip of the wearer's nose in lateral view, and then extends horizontally toward the end of the mask body, near the lower part of the orbit and the center of the cheekbone of the wearer. At the position of, the left and right ends of the mask main body are reached while maintaining the horizontal extension.
The lower side of the mask main body is a mask characterized in that the lower side of the mask main body is inclined linearly at a position from the lower part of the wearer's chin to the vicinity of the posterior part of the mandible to reach the left and right ends of the mask main body. A mask provided with a mask main body that covers the wearer's mouth and nostrils, and ear hooks for hanging the wearer's ears on the left and right sides of the mask main body.
The mask main body is composed of a double-knit horizontal knitting structure having a course × well of 5000 or more.
Formed by applying resin to the center of the mask body, it has a shielding part that blocks the ventilation of the mask.
When the mask is worn, the wearer's nostrils and mouth are covered by the shield.
The left and right ends of the mask body are located on the masseter muscle of the wearer.
The upper side of the mask body is curved downward from the tip of the wearer's nose in lateral view, and then extends horizontally toward the end of the mask body, near the lower part of the orbit and the center of the cheekbone of the wearer. At the position of, the left and right ends of the mask main body are reached while maintaining the horizontal extension.
The lower side of the mask body is linearly inclined at a position from the lower part of the wearer's chin to the vicinity of the posterior part of the mandible in lateral view to reach the left and right ends of the mask body.
A mask that features that. The mask according to claim 1 or 2, wherein the mask main body has a flexible rod-shaped or flat plate-shaped core material arranged at the center of the mask main body in the width direction. It is a method of manufacturing a mask including a mask main body portion that covers the mouth and nostrils, and ear hook portions provided on the left and right sides of the mask main body portion.
The process of forming the fabric that constitutes the mask body with a knitting structure with a course x well of 5000 or more, or a double knit horizontal knitting structure with a course x well of 5000 or more, which is a combination of a plain cord and a second stitch.
The fabric cutting process that cuts the fabric that makes up the mask body,
Including a shielding portion forming step of applying a resin to a position of the cut fabric which is the center of the mask main body to form a shielding portion that blocks the ventilation of the mask.
In the dough cutting process
The left and right ends of the mask body are located on the masseter muscle of the wearer.
The upper side of the mask body is curved downward from the tip of the wearer's nose in lateral view, and then extends horizontally toward the end of the mask body, near the lower part of the orbit and the center of the cheekbone of the wearer. At the position of, the left and right ends of the mask main body are reached while maintaining the horizontal extension.
It is characterized in that the lower side of the mask main body is inclined linearly at a position from the lower part of the wearer's chin to the vicinity of the posterior part of the lower jaw in a lateral view, and the fabric is cut so as to reach the left and right ends of the mask main body. How to make a mask.

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