JP2000217940A - Simplified dust respirator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable simplified dust respirator that can prevent to leave a space between a face and the respirator by dint of improving fitness of the respirator to the face with using an effective area as the dust-proof filter at the maximum, without clogginess which is caused by having moisture even if the respirator is used for a long time and clogginess of a surface that touches with a surface when a user perspires by dint of absorbing moisture which is generated by expiration that is always discharged in the respirator therefore can always use refreshingly. SOLUTION: A member that touches with a face 3 that extends from whole outer peripheral part of a respirator main body 1 which is made of a filter material and formed so as to cover a nose part and a mouth part to an inner direction with folding back and formed into an almost circular-shaped so as to cover an ala nasi part and the mouth part and connected with an outer peripheral part 11 of the respirator main body 1 is made of an elastic nonwoven fabric, for example by mixing high water absorption properties fiber 31 only at an almost half thickness of a side of the respirator main body, thereby moisture and sweat are kept in the respirator without touching a face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable type which absorbs moisture contained in exhaled breath and sweat from the face when worn, eliminates discomfort caused by stickiness of the face, and improves adhesion of the face. A simple dust mask.

[0002]

2. Description of the Related Art A conventional simple dust-proof mask that does not use a replacement filter is a disposable type which is formed by forming a filter material into a substantially hemispherical shape so as to cover a nose and a mouth. Hanging straps attached to both side edges of the mask are worn over both ears or the head.

[0003] In this conventional mask, the effective area of the filter depends on the size of the face, so that the dead volume (internal space volume) is large and the exhalation cannot be sufficiently exhausted. Lack of elasticity and elasticity of the skin causes a lack of fit to the face, resulting in gaps between the face and stickiness of the face part due to sweating, etc. JP-A-7-36669, a face-contacting member having a width of 15 to 45 mm except for a nose ridge is provided so as to be folded back inward from the entire outer peripheral edge of the mask body of the simple dust-proof mask. Is
A non-breathable first member having a moderate elasticity or elasticity, and a first member, which overlaps the face side of the first member and has a higher elasticity or elasticity than the first member, and has a hygroscopic property. There has been proposed a device having a laminated structure with a second member for absorbing sweat when the mask is worn.

[0004]

According to the above-mentioned improved conventional simple dust mask, the effective area of the filter does not depend on the size of the face, and the entire area of the filter becomes the effective area.
This has the effect of reducing dead bodies, increasing the fit to the face, and absorbing sweat from the face-facing portion during perspiration to eliminate the sticky feeling due to sweat.

However, the face-contacting member provided so as to extend inward from the entire outer peripheral edge of the mask body is provided with a non-breathable first member on the mask body side and a moisture-absorbing mask on the back surface of the first member. Since it has a laminated structure with a second member for absorbing sweat at the time of wearing, the moisture contained in the intake air is blocked by the non-breathable first member, and the moisture is absorbed by the second member having a hygroscopic property. Is absorbed only in traces at its end face.

[0006] Therefore, the second member that comes into contact with the face can substantially absorb only sweat during sweating, and the accumulation of moisture in the mask in the internal space of the mask, which is constantly discharged, is inevitable. There is a problem that the face exposed in the central mask surrounded by the face member becomes moist and sticky with the prolonged use, so that the face cannot be kept fresh. Also,
Although the sticky feeling at the time of sweating can be eliminated, there is also a problem that the second member moistened with the face lacks freshness because it is in contact with the face.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and only preserves the advantages of the improved simple dust mask which can maximize the effective area of the filter and increase the fit to the face. In addition, it absorbs the moisture contained in the inhaled air that is constantly exhausted, and the part exposed in the mask becomes moist and sticky with long-term use, eliminating the uncomfortable feeling, and even sweating when sweating It is an object of the present invention to provide a disposable simple dust mask which can be kept fresh inside the mask while keeping the inside of the mask free of sticky feeling and preventing a moist surface from coming into contact with the face so that the face can always be worn fresh.

[0008]

In order to achieve the above object, in the present invention, a mask body 1 formed into a substantially hemispherical shape from a filter material is mounted and used so as to cover the nose and mouth. As a simple dust-proof mask, a face-piece member 3 formed in an annular shape so as to extend inward from the entire outer peripheral edge of the mask body 1 and surround the nose wing part and the mouth part is provided.
Provided the outer peripheral edge portion joined to the outer peripheral edge portion 1 ₁ of the mask body 1,該接face member 3 was formed by mixing the superabsorbent fiber 3 ₁ to a predetermined thickness of the resilient nonwoven structure And In this case, 5% water absorption performance of the face-contact member 3 by varying the superabsorbent fiber 3 ₁ mixing ratio with respect to the nonwoven fabric to 100%
The thickness of the non-woven fabric can be appropriately determined from the range of 0.3 to 4 mm by setting the water absorbing performance, but usually 0.5 to 2 mm.

Thus, the simple dust mask of the present invention is
Since the mask body formed of the filter material and the face-piece member made of non-woven fabric are adhered at their respective outer peripheral edges, the effective area as a filter can be used to the utmost, and the face-piece member makes contact with the face. Therefore, the effective area of the filter does not depend on the size of the wearer's face. Therefore, since the effective area does not decrease, it is not necessary to increase the swelling of the mask, and the dead volume can be reduced and the exhalation can be sufficiently exhausted.

Furthermore, moisture contained in the breath that is constantly discharged in the internal space of the mask is absorbed in superabsorbent fibers 3 ₁ mixed nonwoven fabric of the face-contact member 3, moisture in the internal space of the mask It does not accumulate and the face exposed in the mask is moist and non-sticky.

On the other hand, when sweating, the face member 3
Is absorbed in the superabsorbent fiber 3 ₁ mixed in nonwoven fabric, the side in contact with the face of the nonwoven fabric does not tacky.

[0012] Further, when air is dried in winter, the moisture contained in the exhaled breath and stored in the internal space of the mask when breathing outside air is absorbed by the superabsorbent fibers of the face-facing member inside the mask. Since the exhaled air sequentially discharged keeps moisture at an appropriate level, it is possible to prevent the throat from drying out.

[0013] When mixing the superabsorbent fiber 3 ₁ to the face-contact member 3, it is advisable to form a layer containing no superabsorbent fibers against the face side of the face-contact member 3. This allows perspiration during perspiration to pass through the layer of the nonwoven fabric that does not contain superabsorbent fibers, such as between fibers, from the face and is absorbed by the superabsorbent fibers inside the mask, so that sweat is retained inside the mask and the nonwoven fabric The face-facing side is not moist and the face-facing part is extremely refreshing.

In FIG. 2, the superabsorbent fiber 3 ₁
Are shown. FIG. 2 (A) shows a structure in which superabsorbent fibers are mixed in the entire thickness of the nonwoven fabric, and FIG. 2 (B)
The two-layer structure of a layer containing no superabsorbent fibers 3 _first layer and superabsorbent fibers, FIG. 2 (C) was blended with superabsorbent fiber 3 ₁ by the thickness of the half mask body side structure FIG. 2 (D) shows a structure in which a thin layer such as a porous film that allows moisture to pass through is laminated to a layer of superabsorbent fibers. Further, this laminate layer 3 ₂ can be used knitwork by plastic thread, against the face side can be kept refreshing the contact face without take on moisture. Furthermore, the specifications of the mask, can be selected and a suitable layer structure performs control of superabsorbent fibers 3 ₁ mixing ratio for the nonwoven fabric of the face-contact member 3.

[0015] The use of fibers composed of the superabsorbent fibers 3 ₁ carboxylated cellulose, the acrylic acid derivative polymer, a polyacrylonitrile derivative polymer, superabsorbent polymer, such as alcohol polymer as a main monomer N- vinylacetamide All of these fibers are optimal because they can absorb water 10 times or more their own weight, and can easily form a nonwoven fabric having excellent water absorption performance.

The mask body 1 at the outer peripheral edge of the face-contacting member 3
Bonding to the outer peripheral edge portion 1 ₁ of, it is advisable to detachable via the joining means 4 in addition to the adhesive. That is, before the filter material of the mask body 1 is clogged or the like and the filter function is deteriorated, the face-piece member 3 becomes sticky due to sweating of the wearer and the dust-proof mask is disposable. In exchange, the dust mask can be used economically.

When the face-piece member 3 is detachable from the mask body 1 via the joining means 4, the outer peripheral edge of the face-piece member 3 is
So as to wrap the outer peripheral edge portion 1 ₁ of the mask body 1, elastic various means such as providing a folded piece it is conceivable, as the bonding means 4, superabsorbent fibers 3 _first surface of the peripheral portion of the face-contact member 3 It is preferable to use an adhesive applied to a predetermined position and covered with the cover sheet 5 in a releasable manner. In this case, the face sheet 3 can be easily joined to the mask body by removing the cover sheet 5 and pressing the adhesive-coated surface of the face member 3 against the outer peripheral edge ₁₁ back of the mask body 1. By peeling off the face-piece member 3 from the mask body 1, the face-piece member 3 can be easily replaced and used.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION
Each embodiment will be described with reference to the accompanying drawings.

[0019]

[Embodiment 1] In FIG. 1, a front view of a simple dust mask of the present invention is shown in FIG. 1 (A), and AA in FIG. 1 (A).
A cross-sectional view is shown in FIG. Reference numeral 1 denotes a mask main body, which is formed into a predetermined substantially hemispherical shape, a part of which is sharpened so as to cover a nose and a mouth from a predetermined filter material, and has a narrow outer peripheral portion 1 on an outer peripheral edge of the substantially hemispherical shape. ₁ is formed so as to be located on one plane. Incidentally, the cord 2 subjected to predetermined positions of the left and right side edges of the mask in close proximity to the outer peripheral portion 1 ₁ is mounted so that it can hang on both ears. Mask body 1
The filter material used is a four-layer structure with a predetermined thickness, the inner and outer layers are made of polyester non-woven fabric, and the inner two layers are made of polypropylene non-woven fabric. at the edge 1 ₁ is formed by ultrasonic welding.

The mask body 1 is formed in an annular shape so as to extend inward from the entire outer peripheral edge of the mask body 1 so as to cover the concave portion except for the center, and to surround the nose wing portion and the mouth portion. The outer peripheral edge of the flexible face contact member 3 having a planar elasticity is formed on the outer peripheral edge 11 of the mask body _1.
Are provided by ultrasonic bonding.

The face-facing member 3 is made of an elastic non-woven fabric having a predetermined thickness made of polyester and rayon fibers.
The contact face side of the face-contact member 3 by the thickness of the half of the mask body as a superabsorbent fiber 3 _1, for example, blended fibers of acrylic acid derivative polymer and a layer containing no superabsorbent fibers are formed . [See FIG. 1 (B)].

[0022] Thus, when the mask is worn, the face-contact member 3 ₁ having a resilient annular gap without close contact with the face familiar face, can breathe prevent direct entry of outside air containing dust, The effective area as a filter can be used as much as possible regardless of the size of the face.

The moisture contained in the exhaled air that is constantly discharged into the internal space of the mask is the amount of the acrylic acid derivative polymer, which is a highly water-absorbing fiber blended by half the thickness of the face member 3 on the mask body side. Moisture is not absorbed by the fibers and accumulates in the internal space of the mask, and the face exposed inside the mask as well as the face in contact with the face-contacting member is moist and does not stick and is always refreshed. Even sweat during perspiration Thus, it absorbed held by transmitted between the fibers of the nonwoven fabric of the face-contact member 3 to the fibers 3 ₁ of superabsorbent acrylic acid derivative polymer mask inside, the thickness of the half in contact with the face of the nonwoven fabric The portion does not get wet and the face-facing portion of the face-facing member 3 is not sticky at all and is refreshing.

[Embodiment 2] In FIG. 2, (A) shows a state in which the face-piece member 3 is adhered to the mask body 1 via the adhesive 4, and (B) shows a face-piece. A schematic diagram showing a procedure for replacing the member 3 is shown by a BB section in FIG.

[0025] In the face-contact member 3, an adhesive 4 to the predetermined portion of the peripheral edge portion of the outer periphery of the superabsorbent fibers 3 _first surface in contact with the rear surface of the outer peripheral edge portion 1 ₁ of the mask body 1 substantially 6 equal parts is The adhesive sheet 4 is applied (in this case, it may be applied using a paper pattern), and a cover sheet 5 is attached to the surface of the adhesive 4 so as to be peelable (see the lower drawing in FIG. (B)). The cover sheet 5 is made of an adhesive 4
May be covered with a small cover sheet, or the entire coated portion may be covered with a ring-shaped sheet.

As shown in FIGS. 2 (A) and 2 (B), the face contact member 3 has an outer peripheral edge of the mask body 1 with an adhesive 4 therebetween. It is stuck on the back parts 1 _1. If the face-piece member 3 becomes sticky due to perspiration in a good condition before disposable without the filter function of the mask body 1 being clogged, the face-piece member 3 is peeled off from the mask body 1 [ FIG. 3 (B) middle drawing], the cover sheet 5 was peeled off from the periphery of the new replacement face-piece member 3 [see FIG. (B) lower drawing → middle drawing], and this was fitted to the mask body 1. the periphery of the face-contact member 3 in a state allowed to contact each other pressed against the peripheral edge portion 1 ₁ of the mask body 1. In this way, the dust-proof mask can be used in a refreshing and good state at low cost by replacing the face-contacting member 3 several times until the filter function of the mask body 1 is deteriorated due to clogging or the like.

In the above two embodiments, the face contact member 3
Using fibers of superabsorbent fibers 3 ₁ acrylic acid derivative polymer in, but to form a layer containing no superabsorbent fibers against the face side of the face-contact member 3, the other fibers if superabsorbent course It may be used, and the superabsorbent fibers may be mixed into the entire thickness of the nonwoven fabric by controlling the mixing ratio of the superabsorbent fibers to the nonwoven fabric of the facepiece member 3. also detachable junction via a joining means 4 of the outer edge 1 _1, instead of the adhesive of example it is also possible to use other means, within a range not changing the gist of the present invention Various changes are possible.

[0028]

According to the simple dust-proof mask of the present invention, the face contact member joined at the outer peripheral portion of the mask body is
Mixing super absorbent fibers with elastic non-woven fabric, it can be in close contact with the face without any gaps, maximizing the effective area of the filter to prevent dust intrusion and always discharging The moisture contained in the exhaled breath is absorbed and held by the superabsorbent fibers of the face-contacting member, and the moisture does not accumulate in the internal space of the mask, so that the face in contact with the mask including the face exposed in the mask becomes sticky. In addition, since the superabsorbent fiber of the face-contacting member absorbs and retains sweat at the time of perspiration, the dust-proof mask can be worn without sticking the face-facing portion.

According to the second aspect of the present invention, since the layer containing no superabsorbent fiber is formed on the face side of the face-contacting member, the sweat at the time of perspiration is reduced to the layer containing no superabsorbent fiber. Since the light is transmitted and absorbed and held by the highly water-absorbent fibers inside the mask, the face-contact portion does not contain moisture, so that the dust mask can always be worn freshly.

According to the third aspect of the present invention, as the highly water-absorbing fiber, a fiber made of a highly water-absorbing polymer such as carboxylated cellulose or an acrylic acid derivative polymer capable of absorbing water at least 10 times its own weight is used. By using it, it is possible to absorb and hold the moisture contained in the exhaled breath and the sweat during sweating at an extremely high rate.

According to the fourth aspect of the present invention, the joining of the face-contact member to the outer peripheral edge of the mask body is made detachable via the joining means, so that the filter function of the mask body is still deteriorated. Even in the case where only the face-facing member is sticky with sweat and the mask itself is disposable, only the face-facing member can be replaced and used, which is economically advantageous.

According to the fifth aspect of the present invention, an adhesive coated with a peelable cover sheet is used for the face member as a means for joining the face member to the mask body. A replaceable simple dust mask can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a structural diagram of a first embodiment of a simple dust mask of the present invention, wherein FIG. 1 (A) is a front view and FIG. 1 (B) is a sectional view taken along line AA of FIG. 1 (A).

FIG. 2 is a partially enlarged cross-sectional view of various face-piece members formed by mixing and forming superabsorbent fibers.

3A and 3B are configuration diagrams of a second embodiment of the present invention. FIG. 3A is a front view, and FIG.
FIG. 3 is a schematic diagram shown in a BB section.

[Explanation of symbols]

1 ... mask body, 1 ₁ ... outer peripheral edge of mask body, 3 ...
Face-piece member, 3 ₁ … super absorbent fiber, 3 ₂ … laminate layer,
4 ... Adhesive, 5 ... Cover sheet.

Claims (5)

[Claims] 1. A simple dust-proof mask for mounting and using a mask body 1 formed from a filter material into a substantially hemispherical shape so as to cover a nose and a mouth. the face-contact member 3 formed annularly to surround the alar part and mouth part folded extends, provided by joining outer peripheral edges of the該接face member 3 to the outer peripheral edge portion 1 ₁ of the mask body 1,該接face member 3, a simple dust mask, characterized in that formed by mixing superabsorbent fibers 3 ₁ to a predetermined thickness of the resilient nonwoven. 2. A simple dust mask according to claim 1, wherein a layer containing no superabsorbent fibers is formed on the face side of the face member. 3. A superabsorbent fiber 3 ₁ is a carboxylated cellulose, acrylic acid derivative polymer, polyacrylonitrile derivative polymers, fibers made of a superabsorbent polymer such as alcohol polymer as a main monomer N- vinylacetamide The simple dust mask according to claim 1 or 2, wherein: Wherein bonding to the face-contact member 3 the outer peripheral edge portion 1 ₁ of the mask body 1 of the outer peripheral edge, according to claim 1 or 2, wherein in that the detachable via the joining means 4 Simple dust mask. 5. A joining means 4, characterized in that formed by coating the peelable cover sheet 5 by applying an adhesive to a predetermined position of the superabsorbent fibers 3 _first surface of the peripheral portion of the face-contact member 3 The simple dust mask according to claim 4, wherein