JP4373967B2 - mask - Google Patents

Description

  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.

  However, the former flat plate mask has a drawback that the inner surface is particularly in direct contact with the lips and is inconvenient for conversation. In this respect, the latter three-dimensional mask is advantageous.

  However, as long as the non-woven material is used on the inner surface of the mask, the non-woven fiber fluffs due to moving contact with the skin after being worn, and particularly sensitive wearers may get crushed by the fluff. In addition, some wrinkled wearers feel uncomfortable when the hair ends enter between the nonwoven fibers, or the mask and the wearer's skin move relatively with the hair ends between the nonwoven fibers. As a result, it was found that the fluff was further increased.

In addition, although the thing of patent document 3 is known by the relationship with the structure of this invention, the thing of patent document 3 has air permeability, while the whole perforated plastic film is a constituent material of a main-body part. It differs in that it has a perforated plastic film on the use surface side inner surface of the material it has.
Japanese Patent No. 3660036 JP 2004-49356 A Japanese Patent Laid-Open No. 10-212294

  Then, the main subject of this invention is providing the mask which does not have the irritation | stimulation with respect to skin without fuzzing.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
In a mask having a main body portion covering a target portion of the face including the mouth and nose tip, and a locking portion for locking to the ear,
A perforated plastic film is formed on a portion of the main body portion that is in contact with the skin of the inner surface of the use surface side in an area including at least the periphery of the mouth portion of the main body portion, the outer surface side of at least the mouth portion of the main body portion. Provided,
While the hydrophilic treatment has been made on the inner surface of the film,
A mask, wherein the film has an air permeability of 1000 to 10000 cc / cm ² · sec and a moisture permeability of 400 to 1000 g / m ² · hr .

(Function and effect)
Since the perforated plastic film is provided on the inner surface of the portion of the use surface that directly contacts the skin, the skin is not irritating and non-fluffy in the case of a nonwoven fabric. Therefore, the touch is excellent. Further, even if the hair ends of the wrinkles temporarily enter the hole, it seems that the reason is that the mask easily slips out of the hole without resistance when the mask is relatively displaced, but it has been found that there is no sense of incongruity.
Of course, since the perforated plastic film does not impair the air permeability, smooth breathing is ensured.

  In addition, since the material of the plastic film itself is mostly hydrophobic, when using a hydrophobic film, moisture or water vapor tends to stay on the inner surface, and moisture does not enter and exit smoothly. There is a trend. Therefore, if a hydrophilic treatment is performed on at least the inner surface of the film, water vapor enters and exits smoothly through the opening, and an appropriate humidity can be secured in the mouthpiece.

<Invention of Claim 2>
2. The mask according to claim 1, wherein the size of the opening is 0.1 to 3.0 mm and the opening ratio is 10 to 70%.

(Function and effect)
When the opening is in the above condition, the air permeability and moisture permeability are clearly higher than those of the nonwoven fabric, and the effect of ensuring an appropriate humidity at the mouth portion becomes remarkable. In addition, since the opening and the opening ratio are not excessively large, a feeling of discomfort does not occur even for a wearer who is excellent in touch and has a lot of wrinkles.

<Invention of Claim 3>
The mask according to claim 1, wherein a filter material is provided on the opposite side of the film from the use surface side inner surface.

(Function and effect)
By providing the filter material on the opposite side to the inner surface of the film on the use surface side, the filter material prevents permeation of influenza and pollen while maintaining excellent touch and without causing discomfort for wearers with many wrinkles. Can be used.

<Invention of Claim 4>
The mask according to claim 1, wherein at least the film side surface of the filter material is subjected to a hydrophilic treatment.

(Function and effect)
Furthermore, if at least the film side of the filter material is subjected to a hydrophilic treatment, moisture or water vapor that is likely to occur due to breathing or sneezing is less likely to stay on the inner surface, and a moderate humidity is maintained in the mouthpiece due to a synergistic effect with the film. It can be secured.

  As described above, according to the present invention, the above-described effects can be obtained. If this is required, the mask has no fluffing and no irritation to the skin.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
(Example of 3D mask)
1 and 2 show an example 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 a locking portion 20 for locking to an ear.

  At least the outer surface side of the mouthpiece portion of the main body 10 is made of a material having air permeability, and in a region including at least the periphery of the mouthpiece of the main body portion 10, a perforated plastic film is formed on a portion that directly contacts the skin on the use surface side inner surface. 30 is provided.

  More specifically, in the same figure example, left and right breathable base sheets 1A and 1B made of, for example, a nonwoven fabric are joined by ultrasonic joining or heat welding at the front left in FIG. The left and right breathable substrate sheets 1A and 1B are integrated. The left and right breathable base sheets 1A and 1B extend to the ears as they are, and cuts and notches are formed in the vicinity of the ears, thereby forming the locking parts 20 and 20.

  The left region of the left and right breathable base sheets 1A and 1B on the basis of FIG. 1 is a portion constituting the main body 10 that covers the target portion of the face including the mouth and the nose tip.

  Use of a mask in the main body 10 in a region that directly contacts the skin including the periphery of the mouth, in the illustrated example, covers from the nasal head to the chin at the center of the face and covers almost the entire cheeks at both sides of the center. Perforated plastic films 30A and 30B are provided on the inner surface of the surface side.

  The perforated plastic films 30A, 30B are fixed to the main body 10 by, for example, the above-described ultrasonic bonding or heat treatment in a state where the left and right films are stacked on the inner surfaces of the left and right breathable base sheets 1A, 1B. It is performed by integrating by joining together at the time of welding.

  Instead of the above example, as shown in FIG. 5, the ear hook part sheets 3A and 3B constituting the ear hook part are separated from the air-permeable base sheets 1A and 1B constituting the main body part 10, and they are separated. For example, it may be connected by ultrasonic bonding or heat welding.

  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 countermeasures against pollen having a large particle size, for example, the air-permeable base sheets 1A and 1B can be blocked by simply using a non-woven fabric. However, in the case of blocking influenza virus, a non-woven fabric with very fine fibers and high density can be used. It is desirable to use or to provide the filter material 40 on the inner surface side of the breathable base sheet 1A, 1B. FIG. 3 shows an example in which the filter material 40 is interposed.

  In the example of FIG. 3, a non-woven fabric having a high fiber density is used as the filter material 40 to form a laminated structure, which is integrated by joining together at the time of the aforementioned ultrasonic bonding or heat welding. The periphery of the sheet 1A and the perforated plastic film 30A and the periphery of the breathable base sheet 1B and the perforated plastic film 30B are joined to form a bag, and the filter material 40 is interposed in each of the bags. It may be to.

  In the present invention, the three-dimensional means is not limited. In the above example, in order to obtain a three-dimensional mask, a mode in which the central portion is joined in the vertical direction has been adopted. However, two or more joint portions may be joined, or a lateral portion may be joined. In addition, an appropriate method can be adopted. Moreover, the thing of the shape of FIG. 7 shown as an expansion | deployment shape before joining can be three-dimensionalized by ultrasonic bonding or heat welding joining in the junction part X. FIG. 1 is a base material sheet, 30 is a perforated plastic film.

  Further, the main body portion needs to be breathable, but other portions may be non-breathable.

(Example of flat mask)
FIG. 4 shows an example of a flat mask. For example, two woven fabrics are used as a filter material 40 to sew bag portions 41 and 41 on both sides by sewing, for example. Further, the perforated plastic film 30 is joined to the inner surface of the filter material 40 by an appropriate means. The filter material may be a non-woven fabric, an ultrasonic seal can be used for forming the bag portion 41, and the perforated plastic film 30 can be easily joined.

(Materials used)
In the present invention, in a region including at least the periphery of the mouth, as long as a perforated plastic film is provided in a portion that directly contacts the skin on the use surface side inner surface, it may be provided in a wider region.

  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. When making this composite sheet, the film surface is the inner surface.

  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.

The size of the opening D of the film conceptually shown in FIG. 6 is preferably 0.1 to 3.0 mm, particularly preferably 0.1 to 1.0 mm. The aperture ratio is preferably 10 to 70%, particularly 20 to 40%. Air permeability 1000~10000cc / cm ² · sec, in particular 2000~5000cc / cm ² · sec, a moisture permeability of 400~1000g / m ² · hr, particularly 500~900g / m ² · hr desirable. The thickness of the film may be selected mainly from the air permeability and moisture permeability, but is preferably 15 to 50 μm.

  It is desirable that napping of 0.1 mm or more by the surface fluff test described later is zero. In addition, it is desirable that the brushing of 0.1 mm or more in the surface fluff test after the Gakushin test (acceleration test) rubbed 20 times with artificial leather ("Saplare" manufactured by Asahi Kasei Co., Ltd.) is zero. In the present invention, at least in the region including the periphery of the mouth, it has a laminated structure of at least two layers by a perforated plastic film and a base sheet, but as described above, the filter material 40 and three layers, It is possible to have four or more layers.

  Although the woven fabric may be used as the base sheet, it is desirable to use a non-woven fabric. 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 part, it is preferable to use a stretchable non-woven fabric in addition to a material such as rubber. For example, a polyester copolymer obtained by block copolymerization of a polyether, polyester, polycarbonate glycol or the like , Polyamide-based, polyurethane-based elastomers, and laminates of these and nonwoven fabrics.

  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.

(Basic test)
Table 1 shows the characteristics of the various materials for forming the mask. Here, the perforated film 1 is a mesh film manufactured by PGI (Polymer Group, Inc.) of the United States, and the perforated film 2 is a mesh film manufactured by PANTEX of Italy.

The test method is as follows.
(1) Air permeability: measured in accordance with the Gurley method specified in JIS P 8117 (2) Moisture permeability: measured in accordance with the cup method specified in JIS Z 0208 (3) Surface fluff test (FRT): After drying one test piece (size: 35 mm x 250 mm) (drying temperature: 100 ° C), the total number of raised parts at 100 points in the measurement range with a uniform interval in the longitudinal direction was measured and converted to 1000 mm (Measurement range: 4 mm × 60 mm).
More specifically, as shown in FIG. 8, after one test piece (size: 35 mm × 250 mm) is dried with, for example, an IR heater (drying temperature: 100 ° C.), the intervals are even in the longitudinal direction. This is a test in which the total number of raised hairs at 100 locations in the measurement range is measured by, for example, image analysis and converted to 1000 mm (measurement range: 4 mm × 60 mm).
Here, “1000 mm conversion” is to convert the number of raised parts (measured value) in the actual measurement range of 60 mm into the number of raised parts (calculated value) when the measured range is 1000 mm.
For this surface fluff test, for example, 1090FRT (fiber rising tester) manufactured by Fibro Co., Ltd. can be used. As shown in Fig. 9, the company's tester changed the transport direction by 90 degrees after drying with an IR heater in the process of transporting one test piece in the longitudinal direction. This is a testing machine that captures improved brushing to obtain imaging information, analyzes the imaging information, and measures the total number of raising. The number of test pieces to be sampled is not particularly limited. However, as a matter of course, the greater the number of samplings, the better the accuracy, usually 3 or more, preferably 5 or more.

  From the results of Table 1, it is clear that the use of the perforated film is superior in the characteristics as a mask.

(Example)
A mask shown in FIG. 5 was prepared using the apertured film 1. Here, Kuraray's spunlace nonwoven fabric is used as the base sheet, and the GPF (Golden Phoenix Fiberwebs, Inc.) elastic nonwoven fabric of the Republic of China is used as the ear hook portion sheet 3, and 10 men can use for one week. Provided. As a result, all 10 men gave an evaluation that both the cold and pollen masks shown in Table 1 were excellent in touch.

  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 a perspective view which shows the example of a shape of a 1st solid mask. It is outline | summary explanatory drawing of a mounting state. It is sectional drawing which shows the horizontal cross-section structural example of a center part. It is a perspective view of the example of a flat mask. It is a perspective view which shows the example of a shape of a 2nd three-dimensional mask. It is sectional drawing of a perforated plastic film. It is a front view which shows the example of a shape of a 3rd three-dimensional mask from the viewpoint from an inner surface side. It is explanatory drawing of a surface fluff test. It is explanatory drawing of a surface fluff test.

  DESCRIPTION OF SYMBOLS 1 ... Base material sheet, 1A, 1B ... Breathable base material sheet, 3A, 3B ... Ear hook part sheet, 10 ... Main part, 20 ... Locking part, 30, 30A, 30B ... Perforated plastic film, 40 ... Filter Material, D ... Opening.

Claims (4)

In a mask having a main body portion covering a target portion of the face including the mouth and nose tip, and a locking portion for locking to the ear,
A perforated plastic film is formed on a portion of the main body portion that is in contact with the skin of the inner surface of the use surface side in an area including at least the periphery of the mouth portion of the main body portion, the outer surface side of at least the mouth portion of the main body portion. Provided,
While the hydrophilic treatment has been made on the inner surface of the film,
A mask, wherein the film has an air permeability of 1000 to 10000 cc / cm ² · sec and a moisture permeability of 400 to 1000 g / m ² · hr .   The mask according to claim 1, wherein the size of the opening is 0.1 to 3.0 mm, and the opening ratio is 10 to 70%.   The mask according to claim 1, wherein a filter material is provided on the opposite side of the film from the use surface side inner surface.   The mask according to claim 1, wherein at least the film side surface of the filter material is subjected to a hydrophilic treatment.

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