JP6690879B2 - Disposable dust mask - Google Patents

Description

The present invention relates to a disposable dust mask.

A mask body having a bowl-shaped filter and a breathable bowl-shaped shape retainer that holds the bowl-shaped shape of the bowl-shaped filter, and two upper and lower lacing cords that connect the upper and lower portions of both sides of the mask body, respectively. Disposable dust masks provided are disclosed in Patent Documents 1 and 2, and the like.

JP-A-2003-320041 JP 2004-242905 A

In the conventional disposable dustproof masks of Patent Documents 1 and 2, the elastic force of the tie cord is transmitted from the tie cord fixing portions on both sides of the mask body to the face through the shape retainer, so that the mask body and the face are not separated from each other. There is a problem that the close contact between the mask body and the face becomes non-uniform because the close contact is high in the vicinity of the tightening cord fixing part and low in other parts. Also, since the mask body is fixed to the face with two upper and lower tie cords that are thin and have a small contact area with the face, in order to prevent the tie cord from slipping off when the dust mask is attached, and eventually the mask body to slip off, It is necessary to hang the upper one of the two tightening cords on the upper end of the base of the ear, which causes a problem of putting a load on the ear.
The present invention has been made in view of the above problems, and includes a mask body having a bowl-shaped filter and a shape-retaining function, and a tie string, and the contact between the mask and the face is uniform. An object of the present invention is to provide a disposable dust-proof mask that does not burden the user.

In order to solve the above problems, in the present invention, a mask body having a bowl-shaped filter and a breathable bowl-shaped shape retainer that holds the bowl shape of the filter, and a mask body that forms a convex curved surface. A tie string made of a stretchable and breathable single member that covers substantially the entire front surface and extends from both sides of the mask body to the rear surface side of the mask body. Provided is a disposable dust-proof mask, which is fixed to a mask body.
Since the tie string is fixed to the mask body near the center line of the mask body when viewed from the front, when the dust mask is attached to the face, the part of the tie string that covers almost the entire front surface of the mask body is located on both sides of the mask body. It is stretched by pulling in the direction, adheres to the front surface of the mask body, and is supported by the mask body. A force in the frontal direction of the face and a force in the direction of the center line of the mask main body are applied to almost the entire front surface of the mask main body from a tie string covering the entire front surface. The forces in the direction of the mask body center line are canceled out. The force in the frontal direction of the face is uniformly transmitted to the face from the entire periphery of the shape retainer. As a result, the contact between the mask body and the face becomes uniform. Since the tie string covers almost the entire front surface of the mask body and extends to the rear surface side of the mask body, the parts that extend on both sides of the face and the back of the head when the dust mask is attached are also wide, and the contact area with the face and the back of the head is large. become. Therefore, the possibility that the tie string will slip off when the dust mask is attached is reduced, and it is not necessary to hang the tie string on the upper end of the base of the ear. As a result, the burden on the ears when wearing the dust mask is eliminated.
In a preferred embodiment of the present invention, the shape retainer is fitted in the bowl-shaped filter from the rear side forming the concave curved surface of the bowl-shaped filter.
In a preferred embodiment of the present invention, the shape retainer is fitted over the bowl-shaped filter from the front side forming the convex curved surface of the bowl-shaped filter.
In a preferred embodiment of the present invention, the shape retainer is integrally formed with the bowl-shaped filter.
The shape retainer may be fitted inside the bowl-shaped filter from the rear side forming the concave curved surface of the bowl-shaped filter, or fitted outside from the front side forming the convex curved surface of the bowl-shaped filter to the bowl-shaped filter. Alternatively, it may be integrally formed with the bowl-shaped filter.
In the present invention, a mask body having a shape-retaining function, which is composed of a bowl-shaped filter formed of a material having a predetermined rigidity, and a mask body that forms a convex curved surface covers almost the entire front surface and both sides of the mask body. A stretchable and breathable single member extending from the portion to the rear surface side of the mask body, wherein the tie string is fixed to the mask body near the center line of the mask body in a front view. Disposable dust mask.
Instead of combining the bowl-shaped filter and the bowl-shaped shape retainer with the shape-maintaining function of the mask body, the mask body is constructed with a bowl-shaped filter made of a material having a predetermined rigidity It may have a shape retention function. By omitting the shape retainer, the number of members is reduced.
In a preferred embodiment of the present invention, the tie cord is a continuous annular body.
In a preferred embodiment of the present invention, the tie string is a band-shaped body having a central portion in the longitudinal direction that covers a substantially entire front surface of the mask body, and the dustproof mask includes a connecting tool that detachably connects both ends of the band.
The tie string may be a continuous annular body, or may be a band-like body having a central portion in the longitudinal direction that covers a substantially entire front surface of the mask body. In the latter case, it is necessary to provide a connecting tool that detachably connects both ends of the band.

It is a perspective view of a disposable dust mask according to an embodiment of the present invention. (A) is a perspective view seen from the rear side of the mask body, and (b) is a perspective view seen from the front side of the mask body in a state of being mounted on the face. It is a figure which shows the structure of the mask main body of the disposable dustproof mask which concerns on the Example of this invention. (A) is a perspective view seen from the rear surface side of the mask body, (b) is a front view of a pair of filter pieces before being formed into a bowl-shaped filter, (c) is a face piece cloth piece And (d) is a perspective view of the shape retainer.

A disposable dustproof mask according to an embodiment of the present invention will be described.
As shown in FIG. 1, the disposable dust mask 1 has a bowl-shaped filter 2 and a bowl-shaped filter 2 that is fitted into the bowl-shaped filter 2 from the rear side forming a concave curved surface of the bowl-shaped filter 2. A mask main body 5 having a breathable bowl-shaped shape retainer 3 having a frame structure for holding and a face-contacting portion 4 made of an annular cloth piece joined to the peripheral edge of the bowl-shaped filter 2, and a convex curved surface. The bowl-shaped filter 2 which is the front surface of the mask body 5 to be formed covers almost the entire front surface of the bowl-shaped filter 2, and the bowl-shaped filter 2 which is the rear surface side of the mask body 5 is provided on both sides of the bowl-shaped filter 2 which is both sides of the mask body 5. An elastic stretchable and breathable tie string 6 extending to the rear side is provided. The tie string 6 forms a continuous annular body 6 '. The tie string 6 is in the vicinity of the center line L extending vertically of the bowl-shaped filter 2 which is the center line extending vertically of the mask body 5 in front view, and continuously over substantially the entire length of the center line L. Alternatively, it is fixed to the bowl-shaped filter 2 which is a part of the mask body 5 at a plurality of discrete points or a plurality of discrete lines.
As shown in FIG. 1B, when the dust mask 1 is attached to the face, the portions of the tie string 6 extending from both sides of the bowl-shaped filter 2 to the rear surface side of the bowl-shaped filter 2 are substantially horizontal below the ears. Has been extended to.
The mask body 5 of the dust mask 1 has the same structure as the portion of the dust mask disclosed in Patent Document 1 excluding the tie cords, and is manufactured by the following procedure. As shown in FIG. 2B, two bowl-shaped filters 2 are formed by laminating two symmetrical filter pieces 2a, 2a at the overlapping center portions 2a ', 2a'. As shown in FIG. 2 (c), a fabric in which a soft resin sheet such as polyurethane is laminated on one surface of a nylon fiber or polyester fiber fabric is cut into an annular shape to form a face piece cloth piece 4a, which is formed first. The peripheral portion of the bowl-shaped filter 2 and the outer periphery of the face-contact portion cloth piece 4a are joined to form the face-contact portion 4. Next, the bowl-shaped filter 2 and the face-contacting portion 4 are turned upside down, and the breathable bowl-shaped shape retainer 3 having a skeleton structure is passed through the central opening of the face-contacting portion 4 to the rear surface side of the bowl-shaped filter 2. The bowl-shaped filter 2 is fitted into the bowl-shaped filter 2 and brought into contact with the rear surface of the bowl-shaped filter 2 to maintain the bowl-shaped shape of the bowl-shaped filter 2. When attaching the dust mask 1 to the face, the annular stretchable and breathable tie string 6 is pushed outward in the radial direction and the head is passed through the annular tie string from below, as shown in FIG. As shown, both sides of the tie string 6 extend substantially horizontally below both ears along both sides of the lower face, and the rear portion of the tie string 6 extends substantially horizontally along the lower occipital region. When the urging force from the tie string 6 outward in the radial direction is released, the annular tie string 6 contracts in the radial direction and comes into close contact with both sides of the lower part of the face and the lower part of the back of the head, and the dust mask 1 is attached to the face.

In the dust mask 1, since the tie string 6 is fixed to the bowl-shaped filter 2 in the vicinity of the center line L of the bowl-shaped filter 2 in a front view, when the dust mask 1 is attached to the face, the bowl-shaped filter of the tie string 6 is attached. The part of the front surface that covers almost the entire area is pulled and extended toward both sides of the bowl-shaped filter 2 and is in close contact with the front surface of the bowl-shaped filter 2, and the bowl-shaped filter 2 held in a bowl shape by the shape retainer 3 Supported. A force in the frontal direction of the face and a force in the direction of the center line L are applied to substantially the entire front surface of the bowl-shaped filter 2 held in a bowl shape by the shape retainer 3 from the tie string 6 that covers the substantially entire shape. The forces in the direction of the center line L cancel each other out. The force in the frontal direction of the face is transmitted to the shape retainer 3, and is evenly transmitted from the entire peripheral edge of the shape retainer 3 to the face. As a result, the contact between the dust mask 1 and the face becomes uniform.
The tie string 6 covers substantially the entire front surface of the bowl-shaped filter 2 and extends from both side portions of the bowl-shaped filter 2 to the rear surface side of the bowl-shaped filter 2, so that when the dust mask 1 is worn, the tie string 6 is provided along both sides of the face and the back of the head. The extended portion is also wide, and the contact area with the face and the back of the head is large. Therefore, the possibility that the tie string 6 will slip off when the dust mask 1 is attached is reduced, and it is not necessary to hang the tie string 6 on the upper end of the base of the ear. As a result, the burden on the ears when wearing the dust mask 1 is eliminated.
Since the tie string 6 has air permeability, the portion of the tie string 6 that covers substantially the entire front surface of the bowl-shaped filter does not impair the function of the bowl-shaped filter 2.
The material of the tie string 6 may be a net as in the above embodiment, a stretchable and breathable cloth, a film having a large number of small diameter holes formed therein, and any other stretchable and breathable material. However, the shape retainer 3 may be a skeleton structure, a stitch structure, or a perforated plate structure as in the above embodiment. It only needs to be breathable and rigid enough to maintain the bowl shape when the dust mask is attached.
The shape-retaining tool 3 may be externally fitted to the bowl-shaped filter 2 from the front surface side forming the convex curved surface of the bowl-shaped filter 2. In this case, if the bowl-shaped filter 2 and the shape-retaining tool 3 are made detachable, the shape-retaining tool 3 and the strap 6 can be repeatedly used. The shape retainer 3 may be integrally formed with the bowl-shaped filter 2. In this case, the shape-retaining tool 3 made of a thermoplastic material may be welded to the bowl-shaped filter, or the shape-retaining tool 3 may be formed by partially compressing and curing the bowl-shaped filter 2 by heat pressing or the like. good.
Instead of combining the bowl-shaped filter 2 and the bowl-shaped shape retainer 3 to give the mask body 5 a shape-retaining function, the bowl-shaped filter 2 formed of a material having a predetermined rigidity constitutes the mask body 5. Then, the mask body 5 may have a shape retention function. The shape retainer 3 can be omitted, and the number of members can be reduced.
The tie string 6 may be a continuous annular body 6'as in the above-mentioned embodiment, or a portion covering substantially the entire front surface of the bowl-shaped filter 2 as shown in FIG. It is also possible to use a belt-shaped body 6 ″ having a central portion in the longitudinal direction. In the latter case, it is necessary to provide a connecting tool 6a for connecting both ends of the belt in a detachable manner.

INDUSTRIAL APPLICABILITY The present invention can be widely used for a disposable dust mask including a shape retainer.

1 Disposable dust mask 2 Bowl-shaped filter 2a Filter piece 2a 'Center part 4 Face-contact part 4a Face-contact part cloth piece 5 Mask body 6 Tightening string 6'Round body 6 "Belt-shaped body 6a Connector L Above and below the bowl-shaped filter Extending center line

Claims (7)

A mask main body having a bowl-shaped filter and a breathable bowl-shaped shape retainer for holding the bowl shape of the filter, and covering substantially the entire front surface of the mask main body forming a convex curved surface and from both sides of the mask main body A disposable, characterized in that it comprises a stretchable and breathable single member extending to the rear surface side of the mask body, and the tie string is fixed to the mask body near the center line of the mask body in front view. Dust mask. The disposable dust mask according to claim 1, wherein the shape retainer is internally fitted to the bowl-shaped filter from the rear surface side forming the concave curved surface of the bowl-shaped filter. The disposable dust mask according to claim 1, wherein the shape retainer is externally fitted to the bowl-shaped filter from the front side forming the convex curved surface of the bowl-shaped filter. The disposable dust mask according to claim 1, wherein the shape retainer is formed integrally with the bowl-shaped filter. A mask main body having a shape-retaining function, which is composed of a bowl-shaped filter formed of a material having a predetermined rigidity, and covers substantially the entire front surface of the mask main body forming a convex curved surface, and the mask main body from both sides of the mask main body. A disposable dust-proof mask, comprising: a stretchable and breathable single member extending toward the rear side, which is fixed to the mask body near the center line of the mask body in front view. The disposable dust mask according to any one of claims 1 to 5, wherein the tie string is a continuous annular body. The tie string is a strip-shaped body having a central portion in the longitudinal direction that covers substantially the entire front surface of the mask body, and is provided with a connecting tool for detachably connecting both ends of the strip. The disposable dust mask according to any one of items.

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