JP2017061763A - mask - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mask preventing fogging of glasses.SOLUTION: A mask 10 covering a human mouth and nose is composed of: a surface fabric 20 having gas permeability; a reverse fabric 30 provided on a reverse side of the surface fabric 20; and fitting strings 40 provided on both sides of the surface fabric 20 and the reverse fabric 30. On the surface fabric 20 and the reverse fabric 30, top and bottom ends and both side ends are mutually combined, and an opening part 32 letting exhaled air pass is provided near the mouth and the nose in the center of the reverse fabric to prevent the exhaled air from leaving upward and prevent fogging of glasses.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mask that prevents a person from inhaling and discharging germs and the like by covering his mouth and nose.

  Conventionally, many masks have been used that cover the mouth and nose with a woven or non-woven fabric to filter germs and the like to prevent inhalation and discharge of the germs. However, such a mask has a problem that moist exhalation is discharged from the gaps on both sides of the nose and the glasses are fogged.

JP2002-210030 JP2007-61585A

  For this reason, as disclosed in Patent Document 1, a technique has been disclosed in which a wire is embedded in the upper end of the cloth of the mask and is deformed into a shape along both sides of the nose when worn to fill the gap. However, this technique solves the problem that when exhalation is expelled, the exhalation pushes the mask cloth outward, creating a gap between the upper end of the mask and the face, and expelling exhalation upward. Was not.

  Therefore, as disclosed in Patent Document 2, a technique for providing a short thin film piece extending inward and downward from the upper end of the mask cloth to prevent exhalation from leaking upward has been disclosed. However, even with this technique, when the cloth is pushed outward by the pressure of exhalation, the gap between the thin film piece and the face is vacant, and the problem that exhalation escapes upward has not been solved.

  A mask that covers a person's mouth and nose. This mask has a breathable front cloth, a back cloth provided on the back side of the front cloth, and attachment cords provided on both sides of the front cloth and the back cloth. The upper and lower ends and both side ends are connected to each other, and the nose of the back cloth and the vicinity of the mouth are provided with openings for passing exhalation from the mouth and nose, and the glasses are clouded. It is a mask to stop.

  According to the present invention, it is possible to provide a mask that solves the above-described problems and prevents fogging of glasses.

It is the rear view which looked at the mask of the 1st example from the back side. It is sectional drawing of the AA view of FIG. 1 which shows the mask of a 1st Example. It is a side view which shows the use condition of the mask of a 1st Example. It is the rear view which looked at the mask of the 2nd example from the back side. It is the rear view which looked at the mask of the 3rd example from the back side. It is the rear view which looked at the mask of the 4th example from the back side. It is the rear view, front view, top view, bottom view, left view, and right view which looked at the mask of the 5th Example from the back side. It is the rear view which looked at the mask of the 6th example from the back side, a front view, a top view, a bottom view, a left side view, and a right side view.

  A mask that covers a person's mouth and nose. This mask has a breathable front cloth, a back cloth provided on the back side of the front cloth, and attachment cords provided on both sides of the front cloth and the back cloth. The upper and lower ends and both side ends are connected to each other, and the nose of the back cloth and the vicinity of the mouth are provided with openings for passing exhalation from the mouth and nose, and the glasses are clouded. It is a mask to stop.

The mask is characterized in that the breathability of the back cloth of the mask is smaller than the breathability of the front cloth.
The mask is characterized in that a slit is formed around the opening of the mask.
In any one of the above masks, the upper portion of the backing cloth is extended to be an upper folded portion, and both side portions are extended to be side folded portions, which are folded inward.
In any one of the above masks, a wrinkle is provided on a front cloth or a back cloth.

  The first embodiment will be described with reference to FIGS. The mask 10 is a mask that covers a person's mouth and nose. The mask 10 has a breathable front cloth 20, a back cloth 30 provided on the back side of the front cloth 20, and the front cloth 20 and the back cloth 30. It is comprised from the attachment string 40 provided in both sides. The front cloth 20 and the back cloth 30 are connected to each other by a connecting portion 50 at the upper and lower ends and both side ends. The coupling portion 50 is coupled by adhesion, fusion, or stitching, but the coupling portions 50 at both ends may be coarser than the coupling portions 50 at the upper and lower ends.

  The front cloth 20 and the back cloth 30 are made of woven or non-woven cloth and have air permeability. The breathability of the front cloth 20 is set to be greater than the breathability of the back cloth 30. In addition, the front cloth 20 is provided with a heel 21 in the lateral direction, and the back cloth 30 is also provided with a heel 31 in the lateral direction to improve the adhesion to the face. A substantially inverted U-shaped opening 32 through which exhaled air from the mouth and nose passes is provided near the center lower portion of the backing cloth 30.

  Between the front cloth 20 and the back cloth 30, an exhalation chamber 60 surrounded by a coupling part 50 is formed. In use, exhaled air passes through the opening 32 and is discharged into the expiratory chamber 60, dispersed in the expiratory chamber 60, filtered through the front cloth 20, and discharged to the outside. At this time, since the internal pressure of the expiratory chamber 60 increases, the front cloth 20 is pushed outward, the inner cloth 30 is pressed to the face side, and is in close contact with the face. In addition, since the air permeability of the back cloth 30 is smaller than the air permeability of the front cloth 20, there is little exhalation permeating to the back cloth 30 side.

  For this reason, the gap between the backing cloth 30 having a large area and the face is reduced over the entire surface, and the exhalation that escapes upward from the gap is extremely reduced. Thereby, fogging of the glasses can be prevented. Note that the collar 21 of the front cloth 20 and the collar 31 of the back cloth 30 also serve as a guide for distributing exhalation to both sides. At this time, if the inner side of the exhalation chamber 60 is convex downward, the eaves 21 and 31 can make it easier to guide exhalation going upward.

FIG. 4 shows the mask 10 of the second embodiment, in which slits 33 are provided radially from the periphery of the opening 32, and the followability to the shape of the nose and mouth can be improved.
FIG. 5 shows a mask 10 according to the third embodiment, in which the opening 32 is not U-shaped, is a slit in the vertical direction, and is also provided with a slit 33 in the horizontal direction. As well as improving the follow-up performance, leakage can be reduced.

  FIG. 6 shows the mask 10 of the fourth embodiment. The upper portion of the backing cloth 30 is extended to be an upper folded portion 35, and both sides of the backing fabric 30 are extended to be side folded portions 36, which are folded inward. Is. Thereby, the exhaled air discharged from the upper part or the side part can be further reduced. The opening portion 32 of the backing cloth 30 is limited to the vicinity of the nose and mouth, and the exhalation from the nose and mouth is prevented from leaking out of the expiration chamber 60. For this reason, the opening 32 has a shape in which the width of the nose portion is narrow and the width of the mouth portion is wide, and the corners of an isosceles triangle are rounded. There is also an advantage that a patch can be inserted into the expiration chamber 60.

  FIG. 7 shows a mask according to the fifth embodiment, in which a notch 37 is provided at the center of the upper folded portion 35. It avoids interference with the nose. The side folded portion 36 is omitted for cost reduction.

  FIG. 8 shows a mask of the sixth embodiment, in which the upper folded portion 35 and the side folded portion 36 are omitted from the masks of the fourth and fifth embodiments, and the opening 32 is the same. is there. A six-sided view was added to clarify the shape.

  The mask of the present invention can be used to prevent infection from patients with infectious diseases and to prevent hay fever.

10, mask 20, face cloth 21, collar 30, backing cloth 31, collar 32, opening 33, slit 35, upper folded part 36, side folded part 37, notch 40, attachment string 50, coupling part 60, exhalation Room

Claims (5)

  A mask that covers a person's mouth and nose. This mask has a breathable front cloth, a back cloth provided on the back side of the front cloth, and attachment cords provided on both sides of the front cloth and the back cloth. The upper and lower ends and both side ends are connected to each other, and the nose of the back cloth and the vicinity of the mouth are provided with openings for passing exhalation from the mouth and nose, and the glasses are clouded. Mask to stop.   2. The mask according to claim 1, wherein the breathability of the back fabric of the mask is smaller than the breathability of the front fabric.   A mask having a slit around the opening of the mask according to claim 1.   The mask according to any one of claims 1 to 3, wherein the upper portion of the backing cloth is extended to be an upper folded portion, and both side portions are extended to be side folded portions, which are folded inward. mask.   The mask according to any one of claims 1 to 4, wherein a wrinkle is provided on a front cloth or a back cloth.

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