JP2007014577A5 - - Google Patents

Description

mask

  The present invention relates to a mask that covers a target portion of a face including a mouth and a nose tip.

  Conventionally, a mask in which a plurality of gauze is formed into a rectangular shape and rubber bands for ear hooks are attached in an annular shape on both right and left sides has been widely used. These are types that can be called flat plate masks in terms of shape.

  In recent years, masks using non-woven fabric have been developed for the purpose of disposable use, and in use, masks that deform in shape following the swelling of the mouth and nose have been proposed (for example, see Patent Document 1 and Patent Document 2). Some are commercialized. These are types that can be called three-dimensional masks in terms of shape.

  The thing of patent document 1 is formed so that an ear hooking part may be extended in a horizontal direction, and a cover part (substantially corresponds to the main-body part of this invention) makes rigidity high, and it is hardly extended. By keeping the bulge of the cover part, when wearing a mask, a relatively wide space can be secured around the mouthpiece and nostril so that you can breathe easily. is there.

Although the advantages of the present invention are great, a person has various facial skeletons (profile and size) and simply refers to the lateral direction (the direction from the mouth and nose to the ear. It is difficult to ensure general versatility as a mask only by having a stretchability of the direction perpendicular to the direction.
Japanese Patent No. 3660036 JP 2004-49356 A

  Then, the main subject of this invention is providing the mask excellent in the fitting property with respect to a face.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
In a mask having a main body that covers a target portion of the face including the mouth and nose tip, and an ear hook for locking to the ear,
The main body and the ear hook are formed from a single breathable base sheet,
The main body is provided with a filter material and an inner surface material on the inner surface side of the breathable base sheet,
The filter material is interposed in a space formed by the breathable base sheet and the inner surface material,
A mask characterized in that at least the main body has elasticity in the vertical and horizontal directions.

(Function and effect)
Conventionally, it has elasticity only in the lateral direction. This is just considering the elasticity to the ear hook. In this invention, the main-body part which covers the target site | part of the face including a mouth and a nose tip has a stretching property in the vertical and horizontal directions. Accordingly, it is possible to satisfactorily follow the differences in the facial skeleton (profile and size), particularly the size of the nose, the cheek tension, and the jaw profile. In particular, even a surface length person is excellent in following ability. In addition, "fitness" used in this specification does not mean that it adheres to the entire skin, but in close contact with a part that requires close contact as a mask, while ensuring a space necessary for breathing inside, It means to follow the face well.
Moreover, since the filter material is interposed in the main body, not only pollen but also influenza virus can be blocked.

<Invention of Claim 2>
2. The mask according to claim 1, wherein substantially the whole is stretchable in the vertical and horizontal directions.

(Function and effect)
Substantially the entire mask (main body part and ear hook part) can be stretchable in the vertical and horizontal directions.

<Invention of Claim 3>
The mask according to claim 1 or 2, wherein the air-permeable base sheet and the inner surface material are joined at a dotted joint .

(Function and effect)
Since the breathable base sheet and the inner surface material are joined at the dotted joints, the filter material moves within the space between the breathable base sheet and the inner surface material. Can be prevented.

<Invention of Claim 4>
The mask according to any one of claims 1 to 3, wherein means for increasing rigidity is provided to the main body portion and the ear hook portion that are stretchable in the vertical and horizontal directions.

(Function and effect)
On the other hand, the stretchable part in the vertical and horizontal directions is not stiff and inferior in shape retention, but means for increasing the rigidity of the main body part and the ear hook part , such as thermocompression bonding or ultrasonic pressure bonding. By providing the means, shape retention can be improved by attaching another material such as a non-woven fabric or urethane foam having higher rigidity by pressure-sensitive adhesive, thermal bonding, ultrasonic bonding, or the like. As the stiffness, a material having a critical length defined by JIS P 8143 of 1 to 10 cm is preferable. As a result, it is possible to smoothly attach the ear hook without causing any fouling on the ear hook, and it is possible to eliminate the peeled portion in the state where the followability is not hindered in the main body.

<Invention of Claim 5>
100% and 150% of the sheet material exhibiting stretchability in the longitudinal and lateral directions has an elongation stress of 1.0 to 5.0 N / 25 mm and a recovery stress of 0.5 to 4.0 N / 25 mm. Item 5. The mask according to any one of Items 1 to 4.

(Function and effect)
It has been found that when the degree of stretchability is in the above range, the fit as a mask is suitable.

  As described above, according to the present invention, the above-described effects can be obtained. If this is required, a mask having excellent fit to the face can be obtained.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
(First embodiment)
1 and 2 show a first embodiment of a three-dimensional mask, which includes a main body portion 10 that covers a target portion of a face including a mouth and a nose tip, and an ear hook portion 20 for locking to an ear. However, since it is formed of one breathable sheet S in the embodiment, the main body 10 and the ear hook 20 are integrated.

  FIG. 1 shows an unfolded state before the joining process. A trough-shaped notch is formed in the upper part of the central portion, and the portions B and B along the trough are joined by ultrasonic joining or thermal welding to form a three-dimensional mask as shown in FIG.

  Further, the sheet S as a whole has elasticity in the lateral direction, so that the sheet S is not stiff and inferior in shape retaining property. A sonic crimping means is provided. In the illustrated example, the means 30 for increasing rigidity is formed in a vertical stripe shape. However, as shown in the example of FIG. What is crimped | bonded to the whole region may be used. If necessary, the means 30 for increasing rigidity can be omitted so that the periphery of the hole into which the ear enters is not given rigidity.

  Means 30 for increasing the rigidity can be provided for the entire main body 10 or a necessary portion.

  According to the above-described embodiment, as can be easily estimated from the wearing state of FIG. 2, the stretchability in the vertical direction is also given, so that the profile particularly fits well from the nose to the chin.

(Second Embodiment)
As in the second embodiment shown in FIG. 3, the ear hooking portions 20 </ b> A and 20 </ b> A can be separate members from the main body portion 10. In this case, as long as the main body portion has elasticity in the vertical and horizontal directions, the ear hooking portions 20A and 20A may have elasticity in the vertical and / or horizontal directions, or may not have elasticity. The ear hooking portions 20A and 20A may be elastic only in the lateral direction. As for the connection between the main body 10 and the ear hooks 20A and 20A, the joint Z can be preferably formed by ultrasonic bonding or heat welding in addition to an adhesive or the like.

(Third embodiment)
4 and 5 show a third embodiment, in which a mask is formed with a laminated structure. That is, this is an example in which the entire mask shape including the ear hooking portion 20 is formed by one breathable base sheet S1, the filter material 40 is provided on the inner surface, and the inner surface material 50 is further provided. The main body 10 is constituted by the central portion of the base sheet S1, the filter material 40, and the inner surface material 50.

  In this case, where it is necessary to consider the joining of each material, it is necessary to impart stretchability to the main body 10 in the vertical and horizontal directions. Therefore, for example, as shown in FIGS. 4 and 5, when the base sheet S <b> 1 and the inner surface material 50 are joined by the scattered joints Z by ultrasonic joining or thermal welding, the stretchability in the vertical and horizontal directions is achieved. Will not be disturbed. The filter material 40 is interposed in the space between the base material sheet S1 and the inner surface material 50. In order to prevent movement in the space, the filter material 40 is also joined by the dotted joints Z. However, it is also possible to join only at the periphery of the inner surface material 50.

  The filter material 40 can also be omitted. Further, instead of the single breathable base sheet S1, the ear hooking portions 20A and 20A can be separate sheet members with respect to the main body portion 10, as in the second embodiment.

(Materials used)
In the present invention, the three-dimensional means is not limited. In the above example, in order to obtain a three-dimensional mask, the form of joining in the vertical direction at the upper part of the central portion is adopted. However, the number of joining parts may be two or more, or may be joined in the lateral direction. In addition, an appropriate method can be adopted.

  Masks are used for influenza and pollen control. Since the size of influenza virus is different from the size of pollen, it is necessary to adjust the fineness of the eyes according to the application. In the case of measures against pollen with a large particle size, for example, a breathable base sheet can be blocked with a material having a fiber density similar to that of a non-woven fabric, but in the case of influenza virus blocking, a material with very fine fibers and high density can be used. It is desirable to use or provide the filter material 40 as in the third embodiment. FIG. 3 shows an example in which the filter material 40 is interposed.

  As said inner surface material 50, a nonwoven fabric can be employ | adopted suitably. Perforated plastic film can be used to ensure air permeability. The perforated plastic film can be obtained by a known forming method. For example, a film obtained by perforating or hot pressing a thermoplastic film, or a composite sheet made of this and a nonwoven fabric can be used. It is desirable that at least the inner surface of the film is subjected to a hydrophilic treatment. The means for hydrophilization treatment is not limited, but it is desirable to apply glyceryl monoolefin or sorbitan monolaurate to the inner surface of the film, for example. The outer surface (atmosphere side) may also be subjected to a hydrophilic treatment.

  As the breathable sheet S or the base sheet S1, it is desirable to use a woven fabric. As this woven fabric, “Techno Fine Two Way” manufactured by Asahi Kasei Co., Ltd., which contains 85% polyester and 15% polyurethane can be mentioned. Extra fine thread rubber can be interposed between the laminated nonwoven fabrics in the vertical and horizontal directions to impart stretchability in the vertical and horizontal directions. 100% and 150% of the sheet material exhibiting stretchability in the vertical and horizontal directions have an elongation stress of 1.0 to 5.0 N / 25 mm, and a recovery stress of 0.5 to 4.0 N / 25 mm.

  As described above, a non-woven fabric can be suitably used as the inner surface material 50. The nonwoven fabric that can be suitably used is preferably selected from materials that are breathable and do not irritate the skin. For example, the nonwoven fabric obtained from manufacturing methods, such as a melt blown, a spun bond, air through, a point bond, a needle punch, a spun lace, is used. A meltblown nonwoven fabric is particularly desirable. As a constituent material of the ear hook portion 20, it is preferable to use a stretchable nonwoven fabric in addition to a material such as rubber. For example, a polyester-based copolymer obtained by block copolymerization of polyether-based, polyester-based, polycarbonate-based glycol or the like Examples thereof include coalescence, polyamide-based, polyurethane-based elastomer, and a laminate of these and a nonwoven fabric.

  As a filter material mainly interposed between layers, a nonwoven fabric obtained from a manufacturing method such as melt blown, spun bond, air through, point bond, needle punch, spun lace or the like can be used.

  The present invention can be applied to a wide range of uses in addition to a mask covering a nose and mouth for the purpose of blocking allergens in hay fever and the like, and preventing infection in colds and the like.

It is an expanded view before joining processing of the first three-dimensional mask. It is outline | summary explanatory drawing of a mounting state. It is an expanded view of the example which made the main-body part and the ear hook part into a different body. It is an expanded view of the example of a mask of laminated structure. It is a 5-5 line arrow directional view.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Main-body part, 20, 20A ... Ear hook part, 30 ... Means to raise rigidity, 40 ... Filter material, 50 ... Inner surface material, Z ... Joint part.

Claims (5)

In a mask having a main body that covers a target portion of the face including the mouth and nose tip, and an ear hook for locking to the ear,
The main body and the ear hook are formed from a single breathable base sheet,
The main body is provided with a filter material and an inner surface material on the inner surface side of the breathable base sheet,
The filter material is interposed in a space formed by the breathable base sheet and the inner surface material,
A mask characterized in that at least the main body has elasticity in the vertical and horizontal directions.   2. The mask according to claim 1, wherein substantially the whole is stretchable in the vertical and horizontal directions. The mask according to claim 1 or 2, wherein the air-permeable base sheet and the inner surface material are joined at a dotted joint . The mask according to any one of claims 1 to 3, wherein means for increasing rigidity is provided to the main body portion and the ear hook portion that are stretchable in the vertical and horizontal directions.   100% and 150% of the sheet material exhibiting stretchability in the longitudinal and lateral directions has an elongation stress of 1.0 to 5.0 N / 25 mm and a recovery stress of 0.5 to 4.0 N / 25 mm. Item 5. The mask according to any one of Items 1 to 4.