KR102150345B1 - Mask - Google Patents

Abstract

There is provided a mask that adheres well to the face of the mask body and suppresses the occurrence of a gap between the mask body and the face, thereby suppressing intrusion of fine particles into the mask. A mask 1 having a mask body 10 and earring portions 12 formed at both ends of the mask body 10 in the horizontal direction, and having a plurality of pleats 15 formed therein, and a plurality of pleats 15 , It is fixed with a welding portion 22 formed by a heat seal, and the welding portion 22 is formed in a straight line shape at equal intervals in the vertical direction from both sides of the mask body 10 in the horizontal direction, and the distance between adjacent welding portions It is formed so that it may become 3 mm or more.

Description

Mask {MASK}

The present invention relates to a mask used for the purpose of protection against cold viruses, pollen, dust, PM2.5, and the like.

BACKGROUND ART Recently, in addition to a mask for preventing pollenosis and a mask for preventing colds, there is an increasing demand for masks for preventing particulate matter such as PM (particulate matter) 2.5 that affects the respiratory system and circulatory systems such as the heart or blood vessels. Conventionally, as a mask for countermeasures against fine particulate matter, the N95 mask has been known, but there are problems such as high cost, poor design, and choking. Therefore, it is a general mask, and in order to suppress the invasion of PM2.5, a mask having improved adhesion between the side portion of the mask body and the face is desired. In addition, the N95 mask refers to a mask that has been approved for the N95 standard of the National Institute of Labor Safety and Health (NIOSH) and is licensed.

For example, as a mask that improves the adhesion between the side of the mask body and the face, Patent Document 1 discloses a mask body portion subjected to a pleat processing in the horizontal direction, and lines (strings) at both ends of the mask body in the horizontal direction. Shape) or a band-shaped earring member, and the one end and the other end of the earring member are installed at predetermined intervals acting on the outer side of the mask body in the longitudinal direction of the tensile force by the earring member when the mask is mounted. A mask is disclosed that suppresses warpage of an end portion of the mask body in the horizontal direction and improves adhesion between the side portion of the mask body and the face.

Japanese Patent Laid-Open Publication No. 2011-182810

However, also in the mask described in Patent Document 1, there is a possibility that a gap may occur between the side portion of the mask body and the face, and there is room for improvement.

The present invention has been made in view of the above problems, and when mounted, the side portion of the mask body adheres well to the face, suppressing the generation of a gap between the mask body and the face, and suppressing the intrusion of fine particles into the mask. It is in providing a mask.

The said subject can be solved by the following means.

(1) a mask comprising a mask body and earring portions formed at both ends of the mask body in the transverse direction, and a plurality of pleats formed by overlapping portions of the mask body,

The plurality of pleats are fixed by a welding portion formed by a heat seal,

The welding portion is formed in a linear shape at equal intervals in the vertical direction on both sides of the mask body in the horizontal direction,

The mask, characterized in that the spacing of the adjacent welding portions is 3 mm or more.

(2) The mask according to (1), wherein both ends of the mask body in the transverse direction are covered with side tapes.

(3) The side tape includes the same material as the earring portion,

The mask according to (2), wherein the earring portion is provided on the side tape.

(4) The mask according to (2) or (3), wherein the welding portion is formed by overlapping the side tape and the mask main body and heat-sealing.

(5) At both ends of the mask body in the horizontal direction covered with the side tape, a temporary welding portion in which the plurality of pleats are temporarily fixed by a heat seal is formed outward from the welding portion in the transverse direction of the mask body, ,

The mask according to any one of (2) to (4), wherein the number of the temporary welding portions in the vertical direction is smaller than the number of the welding portions.

(6) The mask according to (5), wherein at least a part of the temporary welding portion overlaps with the welding portion in the vertical direction.

(7) The mask according to (5) or (6), wherein the minimum distance between the adjacent temporary welding portions in the vertical direction is larger than the distance between the welding portions.

(8) At the upper and lower ends of the mask body, transverse welding portions formed by a heat seal extending in the transverse direction of the mask body are formed,

The mask according to any one of (1) to (7), wherein the spacing of the welded portions in the vertical direction is larger than the spacing of the welded portions in the horizontal direction in the horizontal direction.

(9) In the mask body, side blocks are provided at both ends of the mask body in the transverse direction on the side in contact with the face of the wearer to cover the gap between the face and the mask body. The mask according to any one of (8).

(10) Any one of (1) to (9), characterized in that the mask body is provided with a jaw portion receiving pocket for accommodating the wearer's jaw at a lower end of the mask body on the side of the face of the wearer. The mask described in.

According to the mask described in the above (1), in the welded portions formed on both sides of the mask body in the horizontal direction, since the spacing of the adjacent welded portions is secured by 3 mm or more, both ends of the mask body in the horizontal direction are the shape of the wearer's face. It is easy to follow (hereinafter, also referred to as shape affinity), the gap between the side of the mask body and the face is reduced, so that the adhesion is increased, and invasion of fine particles into the mask can be effectively suppressed.

According to the mask described in the above (2), since both ends of the mask body in the transverse direction are covered with side tapes, fluff on the cut surface of the mask body can be suppressed and the touch can be improved.

According to the mask described in the above (3), since the earring portion is provided on a side tape made of the same material as this, the same material is melted by heat sealing, so that the earring portion can be firmly installed.

According to the mask described in the above (4), if the side tape is welded to the mask body separately from the welded portion, shape affinity deteriorates, and by welding the side tape at the welded portion, it is possible to prevent deterioration of shape affinity. .

According to the mask described in the above (5), by temporarily fixing, the manufacture of pleats is facilitated, and by reducing the number of the temporary welding portions to be less than the number of welding portions, it is possible to suppress the shape affinity from being impaired by the temporary welding portions. .

According to the mask described in the above (6), by overlapping at least a part of the temporary welding portion with the welding portion, it is possible to suppress deterioration of shape affinity due to the temporary welding portion.

According to the mask described in the above (7), by making the minimum interval of the temporary welding portion larger than the interval of the welding portion, it is possible to suppress deterioration of shape affinity due to the temporary welding portion.

According to the mask described in the above (8), since the distance between the vertically welded portions and the horizontally welded portions is generally aligned, shape affinity can be improved by boldly increasing the distance between the vertically welded portions.

According to the mask described in the above (9), the adhesion between the side portion of the mask body and the face can be further improved, and intrusion of fine particles into the mask can be further suppressed.

According to the mask described in the above (10), the adhesion between the lower end of the mask body and the face can be further improved, and intrusion of fine particles into the mask can be further suppressed.

1 is a perspective view of the inside of a mask according to a first embodiment of the present invention.
Fig. 2 is an enlarged view of an end portion in the horizontal direction as seen from the inside of the mask of the first embodiment.
3 is a perspective view of the inside of the mask according to the second embodiment of the present invention.
4 is an enlarged view of an end portion in the horizontal direction as viewed from the inside of the mask of the second embodiment.
5 is a perspective view of the inside of the mask according to the third embodiment of the present invention.
6 is an enlarged view of an end portion in the horizontal direction as viewed from the inside of the mask of the third embodiment.
FIG. 7A is a diagram showing a photograph taken of the mask of Example 1, and FIG. 7B is a schematic diagram showing an enlarged end of the mask in FIG. 7A in the horizontal direction.
Fig. 8(a) is a diagram showing a photograph taken of the mask of Example 2, and Fig. 8(b) is a schematic diagram showing an enlarged end of the mask in Fig. 8(a) in the horizontal direction.
FIG. 9A is a diagram showing a photograph of the mask of Comparative Example 1 taken, and FIG. 9B is a schematic diagram showing an enlarged end of the mask in FIG. 9A in the horizontal direction.
FIG. 10A is a diagram showing a photograph taken of the mask of Comparative Example 2, and FIG. 10B is a schematic diagram showing an enlarged end of the mask in FIG. 10A in the horizontal direction.
FIG. 11A is a diagram showing a photograph of the mask of Comparative Example 3 taken, and FIG. 11B is a schematic diagram showing an enlarged horizontal end portion of the mask of FIG. 11A.
FIG. 12A is a diagram showing a photograph taken of the mask of Comparative Example 4, and FIG. 12B is a schematic diagram showing an enlarged end of the mask in FIG. 12A in the horizontal direction.
FIG. 13A is a diagram showing a photograph taken of the mask of Comparative Example 5, and FIG. 13B is a schematic diagram showing an enlarged horizontal end portion of the mask of FIG. 13A.
14 is a diagram showing a state in which the wearer actually wears the mask of Example 1. FIG.
15 is a diagram showing a state in which the wearer actually wears the mask of Comparative Example 2;

Hereinafter, each embodiment of the mask of the present invention will be described with reference to the drawings.

<First embodiment>

1 and 2 show a mask according to a first embodiment of the present invention. Fig. 1 is a perspective view showing a state viewed from the side contacting the face of the wearer (the inside of the mask) with the central portion widened up and down so that the mask is actually attached and curved in the width direction. Further, Fig. 2 is an enlarged view of an end portion in the transverse direction inside the mask.

As shown in Figs. 1 and 2, the mask 1 according to the first embodiment has a mask body 10 that covers the nose and mouth of the wearer at the time of wearing, and the width direction of the mask body 10 (hereinafter, It is provided with ear straps 12 which become earring portions formed at both ends.

The material constituting the mask body 10 is preferably a nonwoven fabric made from polyester fibers, polypropylene fibers, polyethylene fibers, nylon fibers, cotton fibers, and the like as raw materials. In addition, the ear strap 12 includes a rubber material and a covering material covering the rubber material, and as a material constituting the ear strap 12, the rubber material is preferably made of polyurethane-based fibers, thermoplastic elastomers, etc. In addition, the covering material is preferably made of polyester fibers, nylon fibers or the like as raw materials.

The mask 1 of the present embodiment refers to a so-called ``pleat processing type'', and the mask body 10 is formed by stacking a plurality of nonwoven fabrics, and a plurality of (four in the drawing) fold lines in the horizontal direction When folded in (14), a part of the mask body 10 is overlapped to form a plurality of pleats (wrinkles) 15. In Figs. 1 and 2, the mask main body 10 is shown to be composed of a single nonwoven fabric, but in reality, a plurality of nonwoven fabrics are overlapped (hereinafter, the same applies to Figs. 3 to 6). being).

The upper end portion 10a of the mask body 10 is folded inside the mask body 10 over the entire horizontal direction. The folded portion includes a mesh seal 17 formed in a mesh shape so as to extend in a linear shape along the transverse direction by a heating seal, and a transverse welding portion 16a formed in two rows in a linear shape along the transverse direction by the heating seal. It is fixed by 16b). The transverse welding portions 16a and 16b are formed in parallel at equal intervals, respectively, and a part of the transverse welding portions 16a located at the top overlaps the mesh seal 17 formed in a mesh shape by a heat seal. have. As a heat seal (welding), in addition to heat welding, high frequency or ultrasonic waves may be used. In addition, in the present specification, the mesh seal means that each row of welding points arranged in two rows is welded at equal pitch (intervals), and the row next to one row is welded at half the pitch at the same pitch, and the second row It means a seal part formed by installing more than one set as one set.

In the upper end 10a of the mask body 10, a bag-shaped accommodation space 18 is formed inside the one end side of the mask body 10 by transverse welding portions 16a, 16b, and the accommodation space ( In 18), a nose fit member 20 that is deformed according to the shape of the nose of the mask wearer is accommodated. As the nose pit member 20, it is preferable that it adheres to the shape of the nose and can maintain the shape, and may be made of a resin such as polyester, or may be metallic such as iron or aluminum.

Further, the lower end portion 10b of the mask body 10 is folded inwardly of the mask body 10 over the entire lateral direction, and is fixed by a mesh seal 24 so as to extend in a linear shape along the lateral direction. Further, the end of the ear strap 12 is also fixed to the end of the corner portion of the mask body 10 by a mesh seal 25.

The plurality of pleats 15 are fixed on both sides of the mask body 10 in the transverse direction by a plurality of welding portions 22 formed by a heat seal. The welding portions 22 and the mask body 10 are formed in a linear shape at equal intervals in a direction perpendicular to the horizontal direction (hereinafter referred to as a vertical direction) on both sides of the mask body 10.

Here, as shown in Fig. 2, the distance d1 between the adjacent welded portions 22 in this vertical direction is formed to be at least 3 mm or more, preferably 4 mm or more, and more preferably 5 mm or more. have. The distance d1 between the adjacent welded portions 22 in the vertical direction is formed to be larger than the spacing d0 of the horizontal welded portions adjacent in the transverse direction of the transverse welded portions 16a and 16b. It is preferable that the welding portion 22 is formed in one row. In addition, the distance between the centers between adjacent welded portions 22 is preferably 5 mm or more, more preferably 6 mm or more, and even more preferably 7 mm or more.

In general, when forming the welded portion 22, a mesh seal may be used as with the mesh seals 17 and 24, or even if the welded portion 22 is not formed as a mesh seal, the distance d1 between adjacent welded portions 22 is adjacent to each other in the horizontal direction. It is formed so as to match the distance d0 between the portions 16a and 16b. In this embodiment, a mesh seal is not employed, and the distance d1 between the adjacent welded portions 22 is drastically wide, especially 3 mm or more. As much as possible, by securing the gap between the adjacent welding portions 22, the end portions in the horizontal direction of the mask are made flexible. The welded portion 22 itself is hard because it is once melted and hardened, but by reducing the number, the flexibility of the end portion in the transverse direction of the mask is increased. In this way, by making the end portion in the transverse direction of the mask flexible, the shape affinity of the mask main body 10 to the face of the wearer can be improved. In addition, the upper limit of the distance d1 between the adjacent welded portions 22 is not particularly limited, but may be within a range in which the pleats 15 can be fixed.

When the wearer wears the mask 1, the two ear straps 12 of the mask 1 are hooked on the wearer's ears and rotated, and the nose fit member 20 is bent in conformity with the shape of the nostril, and the mask body ( Install while keeping the upper end (10a) of 10) in close contact with the face. When the mask 1 is attached, the pleat 15 of the mask body 10 is stretched at its center, thereby covering the wearer's nose and mouth.

Both ends of the mask body 10 in the transverse direction receive tension from the ear straps 12, but as described above, in the welding portions 22 formed on both sides of the mask body 10 in the transverse direction, adjacent welding portions Since the spacing of (22) is secured by 3 mm or more, both ends of the mask body 10 in the transverse direction easily follow the shape of the wearer's face.

As described above, in the mask 1 of the present embodiment, the vertical distance between the welding portions 22 formed on both sides of the mask body 10 in the horizontal direction is increased, and the distance between the adjacent welding portions 22 is 3 Since it is formed in a linear shape in the vertical direction so that it is not less than mm, the shape affinity of the mask body 10 to the face of the wearer is good, and the gap between the side of the mask body 10 and the face decreases, thereby increasing adhesion. , Intrusion of fine particles into the mask can be effectively suppressed.

In addition, in the mask 1 of the present embodiment, a collecting filter may be incorporated into the mask body 10 to prevent intrusion of fine particles. By incorporating the collection filter, it is possible to more effectively suppress the intrusion of fine particles into the mask.

<2nd embodiment>

Next, a second embodiment of the present invention will be described. 3 and 4 show a mask according to a second embodiment of the present invention. 3 is a perspective view of the inside of the mask according to the second embodiment. 4 is an enlarged view of an end portion in the transverse direction inside the mask. In addition, in the mask 2 of the second embodiment shown in Figs. 3 and 4, the same reference numerals and descriptions are omitted for the same configuration as the mask 1 of the first embodiment shown in Figs. 1 and 2. do.

3 and 4, in the mask 1 of the first embodiment, the mask 2 of the second embodiment has both ends in the horizontal direction on both sides of the mask body 10 in the horizontal direction, respectively. It is provided with side tapes (30, 30) installed to cover.

In addition, in the mask 2 of the second embodiment, as shown in FIG. 4, a plurality of pleats 15 formed so that a part of the nonwoven fabric overlaps each other by a temporary welding portion 36 at the end in the horizontal direction. It is temporarily fixed. These temporary welding parts 36 are formed by arranging two each in the horizontal direction at each position in the vertical direction for temporarily fixing the pleats 15. By temporarily fixing the pleats 15 in this way, the manufacture of the pleats 15 becomes easy.

The side tapes 30 and 30 are preferably made of polyester fiber, polypropylene fiber, polyethylene fiber, nylon fiber, or the like as a raw material, and at both ends of the mask body 10 in the transverse direction, a mask In a state of being folded from the front surface of the main body 10 toward the rear surface, it is provided to cover the end of the temporarily fixed pleat 15. The side tapes 30 and 30 are welded by overlapping with the mask body 10 by welding portions 22 formed in one row in the vertical direction.

In particular, by using the material of the side tapes 30 and 30 as the same material as the ear straps 12 and installing the ear straps 12 on the side tapes 30 and 30 as a heat seal, the same material melts, thereby forming the ear straps 12. It can be more firmly fixed to the mask body 10. When the ear strap 12 includes a rubber material and a covering material, it is preferable that the side tapes 30 and 30 are made of the same material as the covering material.

The temporary welding portion 36 is disposed so as to be formed outward in the transverse direction than the welding portion 22. Also in this embodiment, the welding part 22 does not employ a mesh seal, and the lateral welding part 16a, 16b is made so that the distance d1 between the adjacent welding parts 22 is drastically wide, especially 3 mm or more. The point formed wider than the interval d0 of) is the same as that of the mask 1 of the first embodiment. In addition, the number of the temporary welding portions 36 is formed so as to be less than the number of the welding portions 22. In this way, by making the number of the temporary welding portions 36 smaller than the number of the welding portions 22, it is possible to suppress the impairment of shape affinity by the temporary welding portions 36. Further, the temporary welding portions 36 need not be formed by arranging two each in the horizontal direction, and may be formed in one row in the vertical direction.

Moreover, in order to suppress the shape affinity from being impaired by the temporary welding part 36, it is preferable to match the positions of the temporary welding part 36 and the welding part 22 in the vertical direction as much as possible. For this reason, as shown in FIG. 4, at least a part of the temporary welding part 36 is formed so that it may overlap with the welding part 22 in a vertical direction.

In addition, as shown in FIG. 4, the distance d2 and d3 between the adjacent temporary welding portions 36 in the vertical direction are formed so as to be larger than the distance between the welding portions 22. The spacing d2 and d3 of the temporary welding portions 36 may be either larger or the same, but by forming the minimum interval between the adjacent temporary welding portions 36 to be larger than the interval between the welding portions 22, the temporary welding portions 36 ) Can suppress deterioration of shape affinity.

As described above, in the mask 2 of the present embodiment, in addition to the effects described in the mask 1 of the first embodiment, by covering both ends of the mask body 10 in the horizontal direction with the side tapes 30 and 30 , By suppressing the fluff of the cut surface of the mask body 10, it is possible to improve the touch. Further, by making the material of the side tapes 30 and 30 the same material as the ear strap 12, the ear strap 12 can be more firmly fixed to the mask body 10. In addition, the fabrication of the pleat 15 is facilitated by the temporary welding portion 36. In addition, by making the minimum interval of the temporary welding portions 36 larger than the interval of the welding portions 22, it is possible to suppress the deterioration of shape affinity due to the temporary welding portions 36.

<Third embodiment>

Next, a third embodiment of the present invention will be described. 5 and 6 show a mask according to a third embodiment of the present invention. 5 is a perspective view of the inside of the mask according to the third embodiment. 6 is an enlarged view of an end portion in the transverse direction inside the mask. In addition, in the mask 3 of the third embodiment shown in Figs. 5 and 6, the same reference numerals denote the same components as the mask 2 of the second embodiment shown in Figs. 3 and 4, and the description is omitted. .

5 and 6, in the mask 2 of the second embodiment, the mask 3 according to the third embodiment includes a face and a mask of the wearer at both ends of the mask body 10 in the horizontal direction. The side blocks 32 and 32 covering the gap of the main body 10 or the lower end of the mask main body 10 are provided with a chin receiving pocket 34 for receiving the wearer's chin. In addition, in Figs. 5 and 6, both side blocks 32 and 32 and the jaw portion receiving pocket 34 are provided, but a mask provided with either of them also corresponds to this embodiment.

The side blocks 32 and 32 are formed by sandwiching one end of a side barrier tape 31 formed in a wide band shape between the mask body 10 and the side tape 30, and the jaw receiving pocket 34 ) Is formed by largely folding the lower end 10b of the mask body 10 inward. In addition, the side block 32 (side barrier tape 31) is positioned above the chin receiving pocket 34, that is, on the side (inside of the mask) in contact with the face of the wearer.

As the side barrier tape 31, by using a non-breathable material such as a polyethylene terephthalate film, a polypropylene film, or a polyethylene film, intrusion of fine particles into the mask can be more effectively suppressed.

In addition, in the mask 3 of the third embodiment, as shown in FIG. 6, the folded portion of the lower end portion 10b of the mask body 10 and one end portion of the side barrier tape 31 are overlapped to form the side tape 30. ), and collects them, heat-sealing them from above the side tape 30 to form a welded portion 22. The side barrier tape 31 has an upper end portion fixed by a mesh seal 17 and a lower end portion fixed by a mesh seal 25. Further, a mesh seal 25 on which the ear straps 12 are attached is also formed on these.

In this way, the side blocks 32 and 32 are formed by fixing the right (or left) ends by the welding portions 22, respectively, and fixing the upper and lower ends by the mesh seals 17 and 24. In addition, the jaw portion receiving pocket 34 is formed in a pocket shape by fixing the left and right ends by the welding portion 22 and fixing the lower end portion by the mesh seal 24.

In the mask 3 of the third embodiment, the left and right side blocks 32 and 32 are masked by extending the pleats 15 of the mask body 10 or accommodating the wearer's chin in the jaw receiving pocket 34. Stand up against the main body 10. Thereby, when the mask is attached, the gap between the mask body 10 and the face is completely covered, the adhesion can be further improved, and intrusion of fine particles into the mask can be further suppressed.

Also in this embodiment, the welding portion 22 does not employ a mesh seal, and the horizontal welding portion 16a is made so that the distance d1 between the adjacent welding portions 22 is drastically wide, particularly 3 mm or more. The point formed wider than the interval d0 of, 16b) is the same as that of the mask 1 of the first embodiment. As described above, in the mask 3 of the present embodiment, in addition to the effects described in the mask 2 of the second embodiment, by providing the side blocks 32 and 32 and the jaw receiving pocket 34, the mask body ( 10) The gap between the face and the face is completely covered, so that the adhesion can be further improved, and intrusion of fine particles into the mask can be further suppressed.

Example

Hereinafter, in order to explain the mask effect of the present invention, a mask of an embodiment of the present invention and a mask of a comparative example are described with reference to FIGS. 7 to 15.

7 to 13 are both schematic diagrams showing an enlarged horizontal end of the mask in (a) and (b) in the horizontal direction of the mask taken from the inside or outside.

Fig. 7 shows the mask of Example 1 of the present invention, and is a mask of substantially the same shape as the mask shown in Figs. 3 and 4 provided with side tapes, as in the second embodiment described above. In addition, Fig. 8 shows the mask of the second embodiment of the present invention, and is substantially the same as the mask shown in Figs. 5 and 6 having a side tape, a side block, and a chin receiving pocket as in the third embodiment. It's a mask. In addition, FIG. 9 is a product of Company A (hereinafter referred to as Comparative Example 1), FIG. 10 is a product of Company B (hereinafter referred to as Comparative Example 2), FIG. 11 is a product of Company C 1 (hereinafter referred to as Comparative Example 3), and FIG. 12 Is a C company product 2 (hereinafter referred to as Comparative Example 4), and FIG. 13 shows a D company product (hereinafter referred to as Comparative Example 5), respectively, all of which are commercially available masks.

The mask of Example 1 of the present invention shown in Fig. 7 and the mask of Example 2 of the present invention shown in Fig. 8 are from the outside to the inside, in the order of a polypropylene nonwoven fabric, a polypropylene nonwoven fabric, a collection filter, and a polypropylene nonwoven fabric. The welded portions on both sides in the horizontal direction of the configured mask body were formed in a linear shape in one row at equal intervals in the vertical direction, and the spacing d1 of the adjacent welded portions in the vertical direction was about 5 mm. In addition, about the interval d1 etc. in the commercially available mask of the comparative example, the actual mask was cut and measured.

In the mask of Comparative Example 1 shown in Fig. 9, a plurality of pleats are formed in the mask body, and in addition to the nose fit member, a sponge that can be deformed according to the shape of the nose of the mask wearer is provided inside the mask body. In addition, two pleats are formed in the vertical direction so that the lower end of the mask body is shorter than the upper end, and the welded portions on both sides of the mask body in the horizontal direction are curved inward from the top to the bottom by the pleats in the vertical direction. Although the shape was formed, it was formed in a straight line in one row at equal intervals in the vertical direction, and the spacing d1 of adjacent welded portions in the vertical direction was about 2 mm.

In the mask of Comparative Example 2 shown in Fig. 10, a plurality of pleats are formed in the mask body, and a nose pit member is provided at the upper end. The welded portions on both sides of the mask body in the transverse direction are formed in a line at equal intervals, and have a substantially arc shape so that the central portion is opened outward in the transverse direction with respect to the upper end and the lower end. The spacing d1 of adjacent welded portions in the vertical direction was 2 mm.

In Comparative Example 3 shown in FIG. 11, a plurality of pleats are formed in the mask body, and a nose pit member is provided at the upper end. The welding portions on both sides of the mask body in the transverse direction include a first welding portion located in the horizontal direction to fix the pleat and a second welding portion located outside the horizontal direction to fix the earring portion to the mask body over the entire length of the transverse end. Consists of. The first welding portions are formed in a straight line in one row in the vertical direction, and the distance d11 of the adjacent welding portions is about 1.5 mm and d12 is about 6 mm, and the intervals are alternately provided. The second welded portions were formed in a linear shape in one row at equal intervals in the vertical direction, and the spacing d13 of the adjacent welded portions in the vertical direction was about 1 mm.

In Comparative Example 4 shown in FIG. 12, pleats were not formed in the mask body, and a central welded portion was formed along the vertical direction at the center of the mask body in the horizontal direction, so that the central welded portion protruded forward when wearing the mask. have. Further, a pit member in close contact with the ball is provided at the upper end of the mask body. At the transverse end of the mask body, a welded portion is formed by a mesh seal in order to attach the earring portion to the mask body over the entire length of the transverse end. As for the mesh seal, 3.5 sets, that is, 7 rows of welded portions were provided, and the distance between the pitches of each row, that is, the distance d1 of the adjacent welded portions in the vertical direction, was 1 mm.

In Comparative Example 5 shown in FIG. 13, a plurality of pleats were formed in the mask body, the end portion in the horizontal direction of the mask body was covered with side tape, and the ear strap was fixed to the side tape. Temporarily welded portions are formed at both ends of the mask body in the transverse direction covered by the side tape. Further, the side tape and the mask main body are superimposed and welded to the inside of the temporary welding portion in the transverse direction by the welding portion. The welded portions were formed in a linear shape in two rows at equal intervals in the vertical direction, and the spacing d1 of the adjacent welded portions in the vertical direction was about 0.5 mm.

For the seven types of masks (all using normal sizes) of Examples 1 and 2 and Comparative Examples 1 to 5 having the above configuration, JIS standard (JIS T 8159: 2006 method of testing the leakage rate of respiratory protective equipment, provided that The number of subjects was subjected to a mask leakage rate test based on (2 adult males in each case). In this mask leakage rate test, a subject enters a chamber filled with NaCl (test room) with a mask, stops, turns the face left and right, makes it move up and down, or makes speech, etc. By measuring the concentration of NaCl inside, it is to see how much NaCl is sucked into the mask. If the absorption of NaCl inside the mask is completely blocked, the concentration of NaCl in the mask is 0 and the leakage rate is 0%, and when NaCl is completely aspirated inside the mask, the NaCl concentration in the mask is the same as the NaCl concentration in the chamber, and leakage. The rate is said to be 100%. Taking all these averages is the final leak rate. In addition, the measurement conditions were NaCl particles: 0.06 to 0.1 µm, and average concentration: 8±4 mg/m 3. The results of this leak rate test are shown in Table 1 in accordance with the interval d1 and the like. In addition, the numerical value in Table 1 is the average value of two subjects.

As described above, the leakage rates of Examples 1 and 2 are very low compared to the leakage rates of Comparative Examples 1 to 5. In the first and second embodiments, the welded portions were formed in a linear shape at equal intervals, and the spacing of the adjacent welded portions was drastically widened to be 5 mm, and the end portion in the transverse direction of the mask became flexible, and the mask body It is thought that the shape affinity of the wearer's face to the face is good, the gap between the side of the mask body and the face is reduced, so that the adhesion is increased, and the invasion of NaCl into the mask can be effectively suppressed.

In addition, with respect to the mask of Example 1, the improvement in the leakage rate in the mask of Example 2 is that the gap between the mask body and the face is completely covered by the side block and the chin receiving pocket, so that the adhesion is increased, and the inside of the mask. It is thought that the invasion of NaCl was further suppressed.

In addition, for the masks of Examples 1 and 2, the same mask leakage rate test as described above was performed using eight adult male subjects as subjects. As a result, the average value of the leakage rate of the mask of Example 1 by a total of 10 people matched with the leakage rate of the 2 persons listed in Table 1 was 29.7%, the average value of the mask leakage rate of Example 2 was 19.2%, and the number of subjects was Even if increased, the leakage rate was very low. As described above, it has been found that the shape affinity of the mask of the present invention can sufficiently cope with differences in the size and shape of the wearer's face.

Next, FIGS. 14 and 15 schematically show photographs comparing how much gap is generated on the side of the mask body in a state where the mask is actually attached. 14 is a diagram schematically showing a state in which the wearer actually wears the mask of Example 1 (FIG. 7) of the present invention. 15 is a diagram schematically showing a state in which the wearer actually wears the mask of Comparative Example 2 (FIG. 10).

As shown in Fig. 14, in the mask of Example 1 of the present invention, the side portion A of the mask body is friendly along the face surface, closely adheres to the face of the wearer, and the gap is hardly seen. On the other hand, in the mask of Comparative Example 2 in Fig. 15, the side portion B of the mask body was bent at two locations B1 and B2, and a gap was generated at that portion. From the above, it is clear that the mask of the present invention has good shape affinity for the face of the wearer of the mask body.

As described above, the mask of the present invention adheres well to the face of the wearer, and in particular, it is possible to suppress the occurrence of gaps on the side of the mask body, and to highly suppress the intrusion of fine particles or the like into the mask.

As mentioned above, although the mask of this invention was demonstrated in detail, it goes without saying that this invention is not limited to the above example, and various improvements and modifications may be made within the scope not departing from the gist of the invention.

This application is based on Japanese Patent Application No. 2013-248014 for which it applied on November 29, 2013, The content is taken in here as a reference.

1: mask
2: mask
3: mask
10: mask body
12: ear strap
14: fold line
15: Fleet
16a, 16b: transverse welding part
18: accommodation space
20: Nose pit absence
22: welding part
17, 24, 25: mesh seal
30: side tape
31: side barrier tape
32: side block
34: chin receiving pocket
36: fusible part

Claims (10)

A mask having a mask body and earring portions formed at both ends of the mask body in a horizontal direction, and a plurality of pleats formed by overlapping portions of the mask body,
The plurality of pleats are fixed by a welding portion formed by a heat seal,
The welding portion is formed in a linear shape at equal intervals in the vertical direction on both sides of the mask body in the horizontal direction,
The distance between the adjacent welding portions is 3 mm or more
Both ends of the mask body in the horizontal direction are covered by side tapes,
At both ends in the transverse direction of the mask body covered with the side tape, a temporary welding portion in which the plurality of pleats are temporarily fixed by a heat seal is formed outward from the welding portion in the transverse direction of the mask body,
A mask, wherein the number of the temporary welding portions in the vertical direction is smaller than the number of the welding portions. The method of claim 1, wherein the side tape comprises the same material as the earring part,
The mask, characterized in that the earring portion is provided on the side tape. The mask according to claim 1 or 2, wherein the welding portion is formed by overlapping the side tape and the mask body and heat-sealing the mask body. The mask according to claim 1 or 2, wherein at least a portion of the temporary welding portion overlaps with the welding portion in the vertical direction. The mask according to claim 1 or 2, wherein a minimum spacing of the adjoining tentatively welded portions in the vertical direction is greater than that of the welded portions. The method of claim 1 or 2, wherein the upper and lower ends of the mask body are formed with transverse welding portions formed by a heat seal extending in the transverse direction of the mask body,
A mask, wherein an interval of the welding portions in the vertical direction is larger than an interval of the horizontal welding portions in the horizontal direction. The mask body according to claim 1 or 2, wherein side blocks are provided on both ends of the mask body in the transverse direction on the side of the mask body in contact with the face of the wearer to cover the gap between the face and the mask body. Mask characterized by. The mask according to claim 1 or 2, wherein the mask body is provided with a jaw portion receiving pocket for accommodating the jaw portion of the wearer at a lower end portion of the mask body on a side of the face of the mask body contacting the wearer's face. delete delete

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