TWI656898B - Mask - Google Patents

Abstract

The present invention provides a mask in which the side portion of the mask body is in good contact with the face, and it is possible to suppress a gap between the mask body and the face, and to suppress the intrusion of fine particles into the mask.

The mask (1) of the present invention comprises a mask body (10), and an ear hook portion (12) formed at both ends of the mask body (10) in the lateral direction, and is formed with a plurality of wrinkles (15), a plurality of strips The wrinkles (15) are fixed by a welded portion (22) formed by heat sealing, and the welded portion (22) is formed to be linearly formed at equal intervals in the longitudinal direction on both sides in the lateral direction of the mask body (10), and the phase The interval between the adjacent welded portions is 3 mm or more.

Description

Mask

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

In recent years, in addition to masks for hay fever, masks for cold prevention, etc., there is a need for a mask for small particulate matter such as PM (Particulate Matter) 2.5 that affects the circulation system such as the respiratory system and the heart or blood vessels. improve. In the past, N95 masks have been known as masks for countermeasures for fine particulate matter, but they have problems such as high price, poor design, and difficulty in breathing. Therefore, a general mask is desired, and in order to suppress the intrusion of PM2.5, the adhesion between the side portion of the mask body and the face is improved. In addition, the so-called N95 mask is a mask approved by the National Institute of Occupational Safety and Health (NIOSH) N95 specification.

For example, as a mask for improving the adhesion between the side portion of the mask body and the face, Patent Document 1 discloses a mask having a mask body portion that is subjected to wrinkle processing in the lateral direction and a mask body. Each of the ends (belt-shaped) or the band-shaped ear-hook member at the both ends in the lateral direction is attached to one end of the ear-hook member at a specific interval of the longitudinal direction of the mask body when the mask is worn. And the other end portion suppresses bending of the end portion of the mask body at the lateral direction when worn, and improves the adhesion between the side portion of the mask body and the face.

[Previous Technical Literature]

[Patent Literature]

Patent Document 1: Japanese Laid-Open Patent Publication No. 2011-182810

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

The present invention has been made in view of the above problems, and provides a method in which a side portion of a mask body is better in close contact with a face when worn, and a gap is formed between the mask body and the face to suppress entry of fine particles into the mask.

The above problems can be solved by the following methods.

(1) A mask comprising: a mask body; and an ear hook portion formed at both end portions of the mask body in a lateral direction, and a plurality of wrinkles are formed by partially overlapping one of the mask bodies, and the plurality of strips are formed The pleats are fixed by a welded portion formed by heat sealing, and the welded portions are linearly formed at equal intervals in the longitudinal direction on both sides in the lateral direction of the mask body, and the interval between the adjacent welded portions is 3 mm or more.

(2) The mask according to the above aspect (1), wherein both ends of the mask body in the lateral direction are covered by the side straps.

(3) The mask according to the above aspect (2), wherein the side band includes the same material as the ear hook portion, and the ear hook portion is attached to the side band.

(4) The mask according to the above aspect (2) or (3), wherein the welded portion is formed by overlapping and heat-sealing the side cover with the mask body.

(5) The mask according to any one of the above aspects, wherein the plurality of wrinkles are temporarily fixed by heat sealing at both end portions of the mask body covered by the side belts in the lateral direction The temporary welding portion is formed in the lateral direction of the mask body more than the welded portion. On the outer side, in the longitudinal direction, the number of the temporary welded portions is less than the number of the welded portions.

(6) The mask according to the above aspect (5), wherein at least a part of the temporary welded portion overlaps the welded portion in the longitudinal direction.

(7) The mask according to the above aspect (5) or (6), wherein, in the longitudinal direction, a minimum interval between the adjacent temporary welded portions is larger than an interval between the welded portions.

(8) The mask according to any one of the above aspects, wherein the upper end portion and the lower end portion of the mask body are formed to extend in a lateral direction of the mask body and formed by heat sealing. In the direction welding portion, the interval between the welded portions in the longitudinal direction is larger than the interval between the transverse welded portions in the lateral direction.

(9) The mask according to any one of the above aspects, wherein the mask body covers the both ends of the mask body at a side of a side of the mask body that abuts the wearer's face The side block is provided in such a manner that the face is in a gap with the mask body.

(10) The mask according to any one of the above aspects, wherein the mask body is provided at a lower end portion of the mask body that abuts the wearer's face to accommodate the wearer. Chin chin bag.

According to the mask described in the above (1), in the welded portion formed on both sides in the lateral direction of the mask body, since the interval between the adjacent welded portions is ensured to be 3 mm or more, both ends in the lateral direction of the mask body are easily fitted to the wearer. The shape of the face (hereinafter, referred to as shape conformability) is such that the gap between the side portion of the mask body and the face is reduced, and the adhesion is increased, and the intrusion of fine particles into the mask is effectively suppressed.

According to the mask of the above (2), since both ends of the mask body are covered in the lateral direction by the side belt, it is possible to suppress the raising of the cut surface of the mask body and to improve the tactile sensation.

According to the mask described in the above (3), since the ear hook portion is attached to the side belt including the same material, the same material is melted by heat sealing, whereby the ear hook portion can be firmly attached.

According to the mask of the above (4), when the side band is welded to the mask body with the welded portion, the shape conformability is deteriorated, but the side band is welded by the welded portion, thereby preventing the deterioration of the shape conformability.

According to the mask described in the above (5), the manufacture of the wrinkles is simplified by the temporary fixing, and the number of the temporary welded portions is made smaller than the number of the welded portions, so that the temporary welded portion can be prevented from obstructing the shape. Sex.

According to the mask of the above (6), at least a part of the temporary fusion-welded portion is superposed on the welded portion, whereby deterioration in shape conformability due to the temporary welded portion can be suppressed.

According to the mask of the above (7), since the minimum interval between the temporary welded portions is larger than the interval between the welded portions, deterioration in shape conformability due to the temporary welded portion can be suppressed.

According to the mask described in the above (8), the interval between the longitudinal direction welded portion and the lateral direction welded portion is generally made uniform, but the shape conformability can be improved by increasing the interval between the longitudinally 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 the penetration 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 portion of the mask body and the face can be further improved, and the penetration of fine particles into the mask can be further suppressed.

1‧‧‧ mask

2‧‧‧ masks

3‧‧‧ masks

10‧‧‧ mask body

10a‧‧‧Upper end

10b‧‧‧Bottom

12‧‧‧ Earrings

14‧‧‧ crease

15‧‧‧ wrinkles (pleats)

16a‧‧‧Transverse welding

16b‧‧‧Transverse welding

17‧‧‧Grid seal

18‧‧‧ accommodating space

20‧‧‧ nose fitting member

22‧‧‧welding department

24‧‧‧ grid seal

25‧‧‧Grid seal

30‧‧‧ side belt

31‧‧‧Side insulation tape

32‧‧‧ side block

34‧‧‧chin storage bag

36‧‧‧ Temporary welding

A‧‧‧ side

B‧‧‧ side

B1‧‧‧ parts

B2‧‧‧ parts

D0~d3‧‧‧ interval

D11‧‧‧ interval

D13‧‧‧ interval

Fig. 1 is a perspective view showing the inside of a mask according to a first embodiment of the present invention.

Fig. 2 is an enlarged view of the end portion in the lateral direction as viewed from the inside of the mask in the first embodiment.

Fig. 3 is a perspective view showing the inside of a mask according to a second embodiment of the present invention.

Fig. 4 is an enlarged view of the end portion in the lateral direction as viewed from the inside of the mask in the second embodiment.

Fig. 5 is a perspective view showing the inside of a mask according to a third embodiment of the present invention.

Fig. 6 is an enlarged view of the end portion in the lateral direction as viewed from the inside of the mask in the third embodiment.

Fig. 7(a) is a view showing a photograph of the mask of the photographing example 1, and Fig. 7(b) is a schematic view showing an enlarged end portion of the mask of Fig. 7(a).

Fig. 8(a) is a view showing a photograph of a mask of Photographing Example 2; and Fig. 8(b) is a schematic view showing an enlarged end portion of the mask of Fig. 8(a).

Fig. 9(a) is a view showing a photograph of a mask of the photographing comparative example 1, and Fig. 9(b) is a schematic view showing an enlarged end portion of the mask of Fig. 9(a).

Fig. 10 (a) is a view showing a photograph of a mask of Comparative Example 2; and Fig. 10 (b) is a schematic view showing an enlarged end portion of the mask of Fig. 10 (a).

Fig. 11 (a) is a view showing a photograph of a mask of Comparative Example 3; and Fig. 11 (b) is a schematic view showing an enlarged end portion of the mask of Fig. 11 (a).

Fig. 12 (a) is a view showing a photograph of a mask of the photographing comparative example 4; and Fig. 12 (b) is a schematic view showing an enlarged end portion of the mask of Fig. 12 (a).

Fig. 13 (a) is a view showing a photograph of a mask of the photographing comparative example 5; and Fig. 13 (b) is a schematic view showing an enlarged end portion of the mask of Fig. 13 (a).

Fig. 14 is a view showing a state in which the wearer actually wears the mask of the embodiment 1.

Fig. 15 is a view 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>

A mask according to a first embodiment of the present invention is shown in Figs. 1 and 2 . Fig. 1 is a perspective view showing a state in which the central portion is pulled down and bent in the width direction as in the case of actually wearing a mask, and is observed from the side of the wearer's face (inside the mask). 2 is an enlarged view of the end portion in the lateral direction inside the mask.

As shown in FIGS. 1 and 2, the mask 1 of the first embodiment includes a mask body 10 that covers the wearer's nose and mouth when worn, and a tether 12 that is formed in the width direction of the mask body 10. (hereinafter, referred to as a lateral direction) an ear hook portion at both ends.

The material constituting the mask body 10 is preferably a nonwoven fabric made of a polyester fiber, a polypropylene fiber, a polyethylene fiber, a nylon fiber, a cotton fiber or the like as a raw material. Further, the ear piece 12 includes a rubber material and a covering material covering the rubber material, and as a material constituting the ear string 12, the rubber material is preferably a polyurethane material, a thermoplastic elastomer or the like as a raw material manufacturer, and the covering material is preferably a material. Polyester fibers, nylon fibers, and the like are used as raw material manufacturers.

The mask 1 of the present embodiment is referred to as a "wrinkle processing type", and the mask body 10 is composed of a plurality of non-woven fabrics, and a plurality of creases 14 in the horizontal direction are stacked by overlapping a plurality of (four in the figure). A portion of the mask body 10 is folded to form a plurality of pleats (pleats) 15. 1 and 2, the mask body 10 is composed of one piece of non-woven fabric, but it is actually composed of a plurality of non-woven fabrics stacked (hereinafter, the same applies to FIGS. 3 to 6).

The upper end portion 10a of the mask body 10 is folded over the entire side of the mask body 10 in the lateral direction. The folded portion is formed by a mesh seal 17 which is linearly extended in the lateral direction by heat sealing and which is formed in a horizontal direction by a heat seal, and is formed by linearly forming two rows of transverse welded portions 16a and 16b. . The laterally welded portions 16a and 16b are formed at equal intervals in parallel, and one of the laterally welded portions 16a at the upper portion is partially overlapped with the mesh seal 17 formed in a mesh shape by heat sealing. In addition to heat sealing (welding) and heat fusion, it is also possible to use high frequency or ultrasonic waves. In addition, the term "mesh sealing" as used in the present specification refers to rows in which the equally spaced (spaced) welded rows are arranged in two rows of welding points, wherein the rows of the rows are welded at the same pitch at one half of the spacing, and the rows are arranged. A set of one or more sets of seals formed.

In the upper end portion 10a of the mask body 10, a bag-shaped receiving space 18 is formed in the inner side of one end side of the mask body 10 by the lateral welding portions 16a and 16b, and the nose shape of the wearer wearing the mask is accommodated in the receiving space 18. The deformed nose is attached to the member 20. The nasal bonding member 20 preferably has a shape close to the nose and can maintain the shape, and may be made of a resin such as polyester or a metal such as iron or aluminum.

Further, the lower end portion 10b of the mask body 10 is directed to the inner side of the mask body 10 in the lateral direction. The fold is folded and fixed by the mesh seal 24 in such a manner as to extend linearly in the lateral direction. Further, the end portion of the tether 12 is also fixed to the corner end portion of the mask body 10 by the mesh seal 25.

The plurality of wrinkles 15 are fixed by a plurality of welded portions 22 formed on both sides in the lateral direction of the mask body 10 by heat sealing. The welded portion 22 is formed linearly at equal intervals on both sides in the lateral direction of the mask body 10 and orthogonal to the lateral direction (hereinafter referred to as a longitudinal direction).

Here, as shown in FIG. 2, the interval d1 of the welded portions 22 adjacent in the longitudinal direction is formed to be at least 3 mm or more, preferably 4 mm or more, and more preferably 5 mm or more. The interval d1 between the adjacent welded portions 22 in the longitudinal direction is formed to be larger than the interval d0 between the laterally welded portions of the laterally welded portions 16a and 16b adjacent to each other in the lateral direction. The welded portion 22 is preferably formed in one row. Further, the center distance between the adjacent welded portions 22 is preferably 5 mm or more, more preferably 6 mm or more, and still more preferably 7 mm or more.

In the case where the welded portion 22 is generally formed, it is formed in the same manner as the mesh seals 17, 24, or in the case of not using the mesh seal, the adjacent welded portions 22 are also used. The interval d1 coincides with the interval d0 between the adjacent laterally-welded portions 16a and 16b. However, in the present embodiment, the mesh seal is not used, and the interval d1 between the adjacent welded portions 22 is increased, especially 3 mm or more. The end portion of the mask in the lateral direction is made soft by ensuring the interval between the adjacent welded portions 22. Since the welded portion 22 itself is hardened once by melting and solidifying, the number of times is reduced, thereby increasing the softness of the end portion of the mask in the lateral direction. Thus, by making the end portion of the mask in the lateral direction soft, it is possible to improve the conformability of the mask body 10 to the shape of the wearer's face. Further, the upper limit of the interval d1 between the adjacent welded portions 22 is not particularly limited as long as it is within the range in which the wrinkles 15 can be fixed.

When the wearer wears the mask 1, the two ear straps 12 of the mask 1 are wound around the wearer's ear, and the nose fitting member 20 is bent in the shape of the bridge of the nose, so that the upper end portion 10a of the mask body 10 is closely attached to the face. Wear it. After the mask 1 is worn, the wrinkles 15 of the mask body 10 are extended at the central portion thereof to cover the wearer's nose and mouth.

Both ends of the mask body 10 in the lateral direction are subjected to tension from the ear string 12, but as above As described above, in the welded portion 22 formed on both sides in the lateral direction of the mask body 10, since the interval between the adjacent welded portions 22 is ensured to be 3 mm or more, both ends of the mask body 10 in the lateral direction are easily followed by the wearer's face. The shape of the department.

In the mask 1 of the present embodiment, the distance between the adjacent welded portions 22 is increased by 3 mm or more in the longitudinal direction of the welded portions 22 formed on both sides in the lateral direction of the mask body 10. Since it is formed in the longitudinal direction, the mask body 10 has a good conformability to the shape of the wearer's face, and the distance between the side portion of the mask body 10 and the face is reduced, and the adhesion is increased, and the intrusion of fine particles into the mask can be effectively suppressed.

Further, in the mask 1 of the present embodiment, the mask body 10 may have a trap filter that prevents the intrusion of fine particles. The built-in trap filter effectively suppresses the intrusion of particles into the mask.

<Second embodiment>

Next, a second embodiment of the present invention will be described. A mask according to a second embodiment of the present invention is shown in Figs. 3 and 4 . Fig. 3 is a perspective view showing the inside of the mask of the second embodiment. 4 is an enlarged view of the end portion in the lateral direction inside the mask. In the mask 2 of the second embodiment shown in FIG. 3 and FIG. 4, the same components as those of the mask 1 of the first embodiment shown in FIGS. 1 and 2 are denoted by the same reference numerals and will not be described.

As shown in FIG. 3 and FIG. 4, the mask 2 of the second embodiment is provided in the mask 1 of the first embodiment, and is provided on both sides in the lateral direction of the mask body 10 so as to cover the end portions on both sides in the lateral direction. Side straps 30, 30.

Further, in the mask 2 of the second embodiment, as shown in FIG. 4, a plurality of pleats 15 formed by partially overlapping the nonwoven fabric are temporarily fixed by the respective temporary welded portions 36 at the ends in the lateral direction. The temporary welding portion 36 is formed by arranging two rows in the lateral direction at each position in the longitudinal direction of the temporary fixing pleats 15 . By temporarily fixing the wrinkles 15 in this way, the manufacture of the wrinkles 15 becomes easy.

The side belts 30 and 30 are preferably polyester fibers, polypropylene fibers, and polyethylene fibers. A manufacturer of the material, such as a nylon or a nylon fiber, is attached to the both ends of the mask body 10 so as to cover the end portion of the temporarily fixed wrinkle 15 in a state in which the front surface of the mask body 10 is folded back toward the back side. unit. The side bands 30 and 30 are overlapped and welded to the mask body 10 by forming the welded portions 22 in one row in the longitudinal direction.

In particular, by setting the materials of the side bands 30, 30 to the same material as the ear tether 12 and attaching the tether 12 to the side bands 30, 30 by heat sealing, the mask body 10 can be stronger by fusing the same material. The tether 12 is fixed to the ground. In the case where the ear tether 12 includes a rubber material and a cover material, it is preferable to use the same material as the cover material for the side bands 30 and 30.

The temporary welding portion 36 is disposed such that the welded portion 22 is formed on the outer side in the lateral direction. In the present embodiment, the welded portion 22 is formed so as to enlarge the interval d1 of the adjacent welded portions 22, in particular, 3 mm or more, and larger than the interval d0 of the transverse welded portions 16a and 16b, without using the mesh seal. The same as the mask 1 of the first embodiment. Further, the number of the temporary weld portions 36 is formed to be smaller than the number of the welded portions 22. By reducing the number of the temporary welded portions 36 to the number of the welded portions 22 as described above, it is possible to suppress the shape conformability due to the temporary welded portion 36. Further, the temporary welding portions 36 need not be formed in two rows in the lateral direction, and may be formed in one row in the longitudinal direction.

Further, in order to suppress the shape conformability due to the temporary welding portion 36, it is preferable to make the positions of the temporary welded portion 36 and the welded portion 22 in the longitudinal direction as close as possible. Therefore, as shown in FIG. 4, at least a part of the temporary welding portion 36 is formed so as to overlap the welded portion 22 in the longitudinal direction.

Further, as shown in FIG. 4, in the longitudinal direction, the intervals d2 and d3 of the adjacent temporary welded portions 36 are formed to be larger than the interval between the welded portions 22. The interval d2 and d3 of the temporary welding portion 36 may be larger or the same, and the minimum interval between the adjacent temporary welded portions 36 is formed to be larger than the interval between the welded portions 22, thereby suppressing the cause. The shape conformability caused by the temporary fusion portion 36 is deteriorated.

As described above, in the mask 2 of the present embodiment, the mask 1 of the first embodiment is described. In addition, by covering the both end portions of the mask body 10 in the lateral direction with the side bands 30, 30, it is possible to suppress the raising of the mask body 10 and improve the tactile sensation. Further, by using the same material as the ear strap 12 for the material of the side bands 30, 30, the ear piece 12 can be strongly fixed to the mask body 10. Moreover, the manufacture of the wrinkles 15 is facilitated by the temporary welding portion 36. Further, by setting the minimum interval between the temporary welded portions 36 to be larger than the interval between the welded portions 22, deterioration in shape conformability due to the temporary welded portion 36 can be suppressed.

<Third embodiment>

Next, a third embodiment of the present invention will be described. A mask according to a third embodiment of the present invention is shown in Figs. 5 and 6 . Fig. 5 is a perspective view showing the inside of the mask of the third embodiment. Moreover, Fig. 6 is an enlarged view of the end portion in the lateral direction inside the mask. In the mask 3 of the third embodiment shown in FIG. 5 and FIG. 6 , the same components as those of the mask 2 of the second embodiment shown in FIGS. 3 and 4 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 5 and FIG. 6, the mask 3 of the third embodiment is attached to the mask 2 of the second embodiment, and is provided at both ends in the lateral direction of the main body 10 so as to cover the gap between the wearer's face and the mask body 10. The side blocks 32, 32 or the lower end portion of the mask body 10 are provided with a chin chin storage bag 34 for accommodating the wearer. In addition, in FIGS. 5 and 6, both of the side blocks 32 and 32 and the chin storage bag 34 are provided, but the mask provided with either one is also in accordance with this embodiment.

The side blocks 32, 32 are formed by sandwiching one end of the side wall insulating tape 31 formed between the mask body 10 and the side band 30, and the chin receiving bag 34 is formed to substantially face the lower end portion 10b of the mask body 10. The inside folds back. In addition, the side block 32 (the side insulating tape 31) is located above the chin receiving pocket 34, that is, abutting the side of the wearer's face (the inner side of the mask).

The side insulating tape 31 can more effectively suppress the intrusion of fine particles into the mask by using a gas-impermeable material such as a polyethylene terephthalate film, a polypropylene film, or a polyethylene film.

Further, in the mask 3 of the third embodiment, as shown in FIG. 6, the portion in which the lower end portion 10b of the mask body 10 is folded back and the one end of the side insulating tape 31 are overlapped and sandwiched between the side bands 30, and the like. The heat sealing is performed on the side belt 30 to form the welded portion 22. Side insulation tape 31 is the upper end The lower end is fixed by the mesh seal 25 by the mesh seal 17. Further, a mesh seal 25 for mounting the tether 12 is also formed from above.

Thus, the side blocks 32, 32 are formed to be fixed to the right (or left) end by the welded portion 22, respectively, and the upper and lower ends are fixed by the mesh seals 17, 24. Further, the chin storage bag 34 is fixed to the left and right ends by the welded portion 22, and the lower end is fixed by the mesh seal 24, thereby forming a bag shape.

In the mask 3 of the third embodiment, the left and right side blocks 32, 32 are raised with respect to the mask body 10 by extending the wrinkles 15 of the mask body 10 or accommodating the wearer's lower jaws in the storage bag 34. Thereby, when the mask is worn, the gap between the mask body 10 and the face is completely covered, thereby further improving the adhesion and suppressing the intrusion of fine particles into the mask.

Further, in the present embodiment, the welded portion 22 is formed so as to enlarge the interval d1 between the adjacent welded portions 22, in particular, 3 mm or more, and larger than the interval d0 between the transverse welded portions 16a and 16b, without using the mesh seal. This point 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 effect of the mask 2 of the second embodiment, the side insulating tapes 32 and 32 and the chin receiving pocket 34 are provided, so that the gap between the mask body 10 and the face can be completely covered. Further, the adhesion is improved, and the intrusion of fine particles into the mask is further suppressed.

Example

Hereinafter, in order to explain the effect of the mask of the present invention, a mask of the embodiment of the present invention and a mask of a comparative example will be described with reference to Figs. 7 to 15 .

Fig. 7 to Fig. 13 (a) are photographs of masks photographed from the inside or the outside, and (b) are schematic views showing the end portions of the masks in the enlarged (3) direction.

Fig. 7 is a view showing a mask of the first embodiment of the present invention, which is a mask similar to the mask described in Figs. 3 and 4 including the side belt according to the second embodiment. Further, Fig. 8 is a view showing a mask of the second embodiment of the present invention, which is substantially the same as the mask described in Figs. 5 and 6 including the side belt, the side block, and the chin storage bag according to the third embodiment. . In addition, Fig. 9 shows a product of company A (hereinafter referred to as comparative example 1), Fig. 10 shows product of company B (hereinafter referred to as comparative example 2), and Fig. 11 shows product of company C (hereinafter referred to as comparative example) 3) Fig. 12 shows a product of company C (hereinafter referred to as comparative example 4), and Fig. 13 shows a product of company D (hereinafter referred to as comparative example 5), and any of them is a commercially available mask.

The mask of the first embodiment of the present invention shown in Fig. 7 and the mask of the second embodiment of the present invention shown in Fig. 8 are produced in the following manner: polypropylene non-woven fabric, polypropylene from the outer side toward the inner side. The welded portions on the both sides in the lateral direction of the mask body which are formed by the non-woven fabric, the collecting filter, and the polyethylene non-woven fabric are formed in a straight line at equal intervals in the longitudinal direction, and the interval d1 of the welded portions adjacent in the longitudinal direction is set to About 5mm. Further, regarding the interval d1 of the commercially available masks of the comparative example, the actual mask was measured with a ruler.

In the mask of Comparative Example 1 shown in Fig. 9, a plurality of wrinkles are formed in the mask body, and in addition to the nose fitting member, a sponge which can be deformed in conformity with the shape of the nose of the mask wearer is provided inside the mask body. Further, two wrinkles are formed in the longitudinal direction so that the lower end portion of the mask body is shorter than the upper end portion, and the mask body is formed in a curved shape from the upper side toward the lower side by the wrinkles in the longitudinal direction, but the mask body is laterally oriented. The welded portions on the side are formed in a row in a straight line at equal intervals in the longitudinal direction, and the interval d1 of the welded portions adjacent in the longitudinal direction is approximately 2 mm.

In the mask of Comparative Example 2 shown in Fig. 10, a plurality of wrinkles are formed in the mask body, and a nose fitting member is provided at the upper end portion. The welded portions on both sides in the lateral direction of the mask body are arranged in an arc at equal intervals, and the central portion is formed in an arc shape so as to open outward in the lateral direction with respect to the upper end portion and the lower end portion. The interval d1 of the adjacent welded portions in the longitudinal direction is 2 mm.

In Comparative Example 3 shown in Fig. 11, a plurality of wrinkles were formed in the mask body, and a nose fitting member was provided on the upper end portion. The welded portion on both sides in the lateral direction of the mask body is a first welded portion that is located on the inner side in the lateral direction and that fixes the wrinkles, and a second welded portion that is fixed to the mask body in the lateral direction on the outer side in the lateral direction and over the entire length in the lateral direction. Department composition. The first welded portion is linearly formed in one row in the longitudinal direction, and the interval d11 between the adjacent welded portions is approximately 1.5 mm, and d12 is approximately 6 mm, and two intervals are alternately provided. The second welded portion is formed linearly at equal intervals in the longitudinal direction, and the interval d13 between the adjacent welded portions in the longitudinal direction is approximately 1 mm.

In the comparative example 4 shown in FIG. 12, the mask body is not formed with wrinkles, and a central welded portion is formed in the longitudinal direction at the center in the lateral direction of the mask body, and the center welded portion protrudes forward when the mask is worn. Further, a bonding member attached to the cheek is provided at an upper end portion of the mask body. At the end portion in the lateral direction of the mask body, the ear hook portion is attached to the mask body over the entire length of the end portion in the lateral direction, and the welded portion is formed by the mesh seal. The mesh sealing system is set to 3.5 sets, that is, the welded portion is 7 rows, and the distance between the rows, that is, the interval d1 of the welded portions adjacent in the longitudinal direction is 1 mm.

In Comparative Example 5 shown in Fig. 13, a plurality of wrinkles were formed in the mask body, and the lateral ends of the mask body were covered with the side bands, and the tethers were fixed to the side bands. A temporary welded portion is formed at both end portions in the lateral direction of the mask body covered with the side belt. Further, the side belt and the mask body are overlapped and welded to each other by the welded portion in the lateral direction of the temporary welded portion. The welded portions are formed in two rows at right intervals in the longitudinal direction, and the interval d1 between the adjacent welded portions in the longitudinal direction is about 0.5 mm.

Seven kinds of masks of the first and second embodiments and the comparative examples 1 to 5 having the above-described configuration (all of which are of a normal size) are based on the JIS standard (JIS T 8159:2006 leak-proof test method for respiratory protection tools, but each In the case where the number of subjects is 2 male adults, the mask leak rate test was conducted. The leak rate test of the mask is performed by a subject wearing a mask in a chamber filled with NaCI, performing still motion, or turning the face to the left or right, or moving up and down, or sounding, and measuring the concentration of NaCI in each mask. Observe how much NaCI is inhaled in the mask. If the NaCI concentration in the mask is completely blocked by the NaCI in the mask, the leak rate is 0%. When the NaCI is completely absorbed into the mask, the NaCI concentration in the mask is the same as the NaCI concentration in the chamber. The leak rate is 100%. Taking the average of all is the final leak rate. Further, the measurement conditions were NaCI particles: 0.06 to 0.1 μm, and the average concentration was 8 ± 4 mg/m ³ . The results of the equal leak rate test are shown in Table 1 at the control interval d1 and the like. In addition, the values in Table 1 are the average of 2 subjects.

Table 1

Thus, the leak rates of the first and second embodiments were extremely lower than the leak rates of the comparative examples 1 to 5. In the first and second embodiments, the welded portion formed by forming the straight line at equal intervals and increasing the interval between the adjacent welded portions to 5 mm can be used to soften the end portion of the mask in the lateral direction, and the pair of the mask body The shape of the wearer's face is better, the gap between the side of the mask body and the face is reduced, the adhesion is increased, and the NaCI can be effectively prevented from intruding into the mask.

Further, with respect to the mask of the first embodiment, the leakage rate of the mask of the second embodiment is improved, and it is considered that the side block and the chin receiving bag completely cover the gap between the mask body and the face, and the adhesion is increased. Better intrusion into the NaCI mask.

Further, with respect to the masks of Example 1 and Example 2, eight adult males were subjected to the same mask leakage test as described above. As a result, the average value of the mask leakage rate of Example 1 in which the total leak rate of the two persons shown in Table 1 was 10 was 29.7%, and the average value of the mask leakage rate of Example 2 was 19.2%, even if the subject was increased. The volume leakage rate is also very low. From the above, it has been found that the shape conformability of the mask of the present invention can sufficiently cope with the difference in the size or shape of the wearer's face.

14 and FIG. 15 are schematic diagrams showing the state of attempting to actually wear the mask. A picture of the extent of the gap compared to the side of the mask body. Fig. 14 is a view schematically showing a state in which the wearer actually wears the mask of Embodiment 1 (Fig. 7) of the present invention. Further, Fig. 15 is a view 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 first embodiment of the present invention, the side portion A of the mask body is adapted to fit along the face surface, and is closely attached to the wearer's face, and the gap is hardly observed. In contrast, in the mask of Comparative Example 2 of Fig. 15, the side portion B of the mask body was bent at two points B1 and B2, and a slit was formed in the portion B. From the above, it was found that the mask of the present invention is excellent in the conformability to the wearer's face.

As described above, the mask of the present invention is in good contact with the wearer's face, and in particular, it is possible to suppress the occurrence of a gap in the side portion of the mask body and to suppress the intrusion of fine particles or the like into the mask.

The present invention has been described in detail above, but the present invention is not limited to the above examples, and various modifications and changes can be made without departing from the scope of the invention.

The present application is based on a Japanese patent application filed on Nov. 29, 2013, the disclosure of which is hereby incorporated by reference.

Claims (10)

A mask comprising: a mask body; and an ear hook portion formed at both end portions of the mask body in a lateral direction, and a plurality of wrinkles are formed by partially overlapping one of the mask bodies, and the plurality of wrinkles are formed The welded portion is fixed by a welded portion formed by heat sealing, and the welded portion is linearly formed at equal intervals in the longitudinal direction on both sides in the lateral direction of the mask body, and the interval between the adjacent welded portions is 3 mm or more. The mask of claim 1, wherein both ends of the mask body in the lateral direction are covered by the side straps. The mask of claim 2, wherein the side strap comprises the same material as the ear hook portion, and the ear hook portion is attached to the side strap. The mask of claim 2 or 3, wherein the welded portion is formed by overlapping heat sealing of the mask body with the mask body. The mask of claim 2 or 3, wherein the temporary fusion portion temporarily fixing the plurality of pleats by heat sealing is attached to the transverse direction of the mask body at both end portions of the mask body covered by the side belt The welding portion is formed on the outer side, and the number of the temporary welding portions is smaller than the number of the welded portions in the longitudinal direction. The mask of claim 5, wherein at least a portion of the temporary welded portion overlaps the welded portion in the longitudinal direction. The mask of claim 5, wherein a minimum interval between the adjacent temporary welded portions is greater than an interval between the welded portions in the longitudinal direction. A mask according to any one of claims 1 to 3, wherein at the upper end of the mask body And a lower end portion forming a transverse direction welded portion formed by heat sealing, extending in a lateral direction of the mask body, wherein an interval between the welded portions in the longitudinal direction is larger than a width of the transversely welded portion in the lateral direction interval. The mask of any one of claims 1 to 3, wherein the mask body is provided with a gap covering the face and the mask body at both ends of the mask body at a side opposite to the side of the wearer's face Side block. The mask according to any one of claims 1 to 3, wherein the mask body is provided at a lower end portion of the mask body that abuts the wearer's face to receive the wearer's chin chin storage bag.