JP2019052400A - Nonwoven fabric sheet for face mask - Google Patents

Abstract

To provide a nonwoven fabric sheet and a face mask using the same, which are formed with a nonwoven fabric made of a synthetic fiber or a cellulosic fiber and which impair a good touch when worn, have a sufficient moist feeling and its durability, and also have an excellent moisturizing effect applying moisture to the skins of the cheeks, of the mouth, below the nose, and of the jaw in which chafing is likely to occur between the skins and the mask, and rough skin is easily occur.SOLUTION: There are provided: a nonwoven fabric sheet for a face mask which is made of a synthetic fiber or a cellulosic fiber, and has a contact cold feeling qmax of 0.065-0.150 J/cm/sec and an average friction coefficient of 0.98 or less; and a face mask having the nonwoven fabric sheet for the face mask disposed at a mouth-side innermost layer.SELECTED DRAWING: None

Description

  The present invention relates to a non-woven fabric sheet for a mask. More specifically, the present invention has a good touch when worn, a sufficiently moist feeling is felt, and is durable, and also easily rubs with the mask, causing rough skin, such as cheeks, mouth and nose. The present invention relates to a non-woven fabric sheet for a mask and a mask using the same, which is formed of a non-woven fabric made of a synthetic fiber or a cellulosic fiber and excellent in a moisturizing effect to moisturize the skin of the lower jaw.

  Conventionally, a nonwoven fabric is generally used as a base material to be attached to a face that is generally distributed as a mask. In particular, when used in contact with the face directly for a long time, not only the fine dust protection function unique to the mask, but also the comfort related to the wearing comfort such as the feeling of wearing on the face and the feeling of touch. It is regarded as an important performance requirement. Therefore, in order to improve the feel of the mask, it has been conventionally performed to improve the innermost layer sheet that touches the skin when worn to a more comfortable feel. In recent years, products that process moisturizing lotion liquid into a mask innermost layer sheet and are moist and smooth and have a good touch are also on the market.

A method of using a sheet impregnated with a polyhydric alcohol as a moisturizing component on the inside of a mask has also been known.
For example, the following Patent Document 1 discloses a mask composed of at least three layers of an innermost layer, an intermediate layer, and an outermost layer on the mouth side, and has a bending hardness of 0.20 gf · cm when all the layers are stacked. ² / cm or less, and a mask that improves the touch by using a nylon non-woven fabric having a bending hardness of 0.10 gf · cm ² / cm or less with glycerin of a polyhydric alcohol supported on the innermost layer is disclosed. Yes. As a suitable material for each layer constituting the mask, nylon is used for the innermost layer, and polypropylene is used for the intermediate layer and the outermost layer, and the bending hardness is 0.20 gf · cm with all the layers stacked. ² / cm or less seems to be necessary as one of the performances representing the goodness of touch, but not all the goodness of touch is achieved only by the characteristic value of bending hardness.

  In addition, Patent Document 2 below describes that a sheet impregnated with a polyhydric alcohol is arranged inside the mask to generate heat enough to feel warmth, and a satisfactory moist feeling is obtained. Is hard to think.

JP 2017-14647 A JP 2013-244153 A

  In view of the above, the problem to be solved by the present invention is that the cheek has a good feel when worn, has a sufficient moist feeling and is durable, and is easily rubbed with a mask, which easily causes rough skin. A non-woven sheet made of a non-woven fabric made of a synthetic fiber or a cellulosic fiber excellent in a moisturizing effect that moisturizes the mouth, under the nose, and chin skin, and a mask using the non-woven sheet It is to be.

As a result of intensive studies and repeated experiments to solve the above-mentioned problems, the present inventors have realized a non-woven sheet to achieve both a comfortable moist feeling and an excellent touch feeling that have not been achieved with conventional non-woven fabrics. Unexpectedly found that it is important that the contact cooling sensation qmax is in the range of 0.065 to 0.150 J / cm ² / sec and the average friction coefficient is 0.98 or less. It has come to be. In particular, in order to bring the values of the contact cooling sensation qmax and the average friction coefficient of a nonwoven fabric sheet made of synthetic fibers or cellulosic fibers into the above ranges, the present inventors give an amino acid-based wetting agent to the nonwoven fabric. Was unexpectedly found to be effective and effective.

That is, the present invention is as follows.
[1] The contact cooling sensation qmax is 0.065 to 0.150 J / cm ² / sec, and the average friction coefficient is 0.98 or less. Nonwoven sheet for mask.
[2] The nonwoven fabric sheet for masks according to [1], wherein the apparent thermal conductivity is 0.032 W / mK or more.
[3] The nonwoven fabric sheet for masks according to [1] or [2], which carries an amino acid-based wetting agent.
[4] The mask nonwoven fabric sheet according to [3], wherein the amino acid-based wetting agent is sodium pyrrolidonecarboxylate.
[5] The nonwoven fabric sheet for masks according to any one of [1] to [4], wherein the cellulosic fiber is copper ammonia rayon.
[6] A mask in which the non-woven fabric sheet for masks according to any one of [1] to [5] is arranged in the innermost layer on the mouth side.

  The non-woven fabric sheet for a mask according to the present invention has a good touch when worn, a moist feeling is sufficiently felt, and is durable, has an excellent humidity control effect in the mask, and more easily rubs with the mask. It also has a moisturizing effect that moisturizes the skin of the cheeks, mouth, nose, and chin, which are prone to rough skin, providing a very satisfying feeling of wear and comfort even when worn for a long time. The touch is maintained and a skin-beautifying effect can be provided.

Hereinafter, embodiments of the present invention will be described in detail.
Synthetic fibers used in the present invention include polyamide fibers such as nylon 6 and nylon 66, polyester fibers such as polyethylene terephthalate, polybutylene terephthalate and polytrimethylene terephthalate, polyolefin fibers such as polypropylene and polyethylene, Thermoplastic fibers such as acrylic fibers are used. These fibers may be used alone or in combination of two or more including split fiber / core-sheath, combined, or laminated. Among them, polyamide fibers such as nylon 6 and nylon 66 are suitable for use as the innermost layer of the mask because they are resistant to friction and have a soft texture. In addition, it is hydrophilic and has good compatibility with the amino acid type wetting agent used in the present invention and good processability.

  The single yarn fineness of the synthetic fiber is not particularly limited, but the single yarn fineness is preferably 0.1 dtex to 10 dtex, and more preferably 0.5 dtex to 5 dtex. If it is thinner than 0.1 dtex, the specific surface area becomes large and the amount of drug held per unit weight of the drug increases, but the wear strength is insufficient, and there is a concern about the occurrence of fluff and the like when worn for a long time. On the other hand, if it is thicker than 5 dtex, the specific surface area becomes small, the amount of the drug held is insufficient, and there is a possibility that a sufficiently moist feeling cannot be obtained. Will feel strong, and it will not endure long-time wearing.

  Preferred examples of the cellulosic fiber include cotton, copper ammonia rayon (cupra), viscose rayon, polynosic rayon, purified rayon, and high strength rayon. The single yarn fineness, fiber length, etc. of these cellulose fibers are not limited in any way, but as the single yarn fineness used for the nonwoven fabric, 0.1 dtex to 3.3 dtex is preferably used in the case of long fibers, and more preferably 0.2 dtex to 2.2 dtex. If it is less than 0.1 dtex, the specific surface area increases and the amount of the drug held per unit weight of the drug increases, but the wear strength is insufficient, and there is a concern about the occurrence of fluff and the like when worn for a long time. On the other hand, if it exceeds 3.3 dtex, it is thick and inferior in flexibility, feels poor and lacks smoothness. When the cellulosic fiber is a short fiber, the single yarn fineness is preferably 0.1 dtex to 3.3 dtex, more preferably 0.8 dtex to 2.0 dtex, and the fiber length is preferably 5 mm to 200 mm.

  In order to remarkably improve the moist feeling and feel of the nonwoven fabric sheet of the present embodiment, it is more preferable to use a copper ammonia rayon having a circular cross section and high water absorption. Specifically, a cupra manufactured by Asahi Kasei Co., Ltd. Trade names Bemberg and Benrize). Copper ammonia rayon has higher liquid absorbency and flexibility than other cellulosic fibers, and is suitably used as a nonwoven fabric sheet. Copper ammonia rayon is a skin-friendly material with very low skin irritation. Long fibers are characterized by very little re-contamination on the skin due to the dropping of fibers compared to other cellulosic fibers due to self-adhesion. When the cellulosic fiber is other than copper ammonia rayon, friction with the skin is increased, and the skin irritation tends to be slightly increased by physical stimulation.

  As the method for producing the nonwoven fabric, any of a spunbond method, a thermal bond method, a spunlace method, a needle punch method, a melt blown method, a chemical bond method, an air-through method, and the like may be used.

Basis weight of the nonwoven fabric is preferably 10~70g / ^{m 2} so that the rigidity is not increased, and more preferably from 20 to 40 g / ^{m 2.} If the basis weight is less than 10 g / m ² , a sufficient thickness for collection such as a fine dust protection function cannot be obtained. On the other hand, if it exceeds 70 g / m ² , the rigidity tends to be too high.

As a method for increasing the contact cooling sensation qmax value of the synthetic fiber or the cellulosic fiber and reducing the average friction coefficient to obtain a moist feeling, it is conceivable to apply a moisturizing agent or a wetting agent. General moisturizers and wetting agents include polyhydric alcohols such as glycerin and propylene glycol as described above. Further, as ingredients used for the purpose of moisturizing cosmetic ingredients, lactic acid, urea, natural oils and fats, oils and fats such as long chain fatty acids and fatty acid esters, amino acid type wetting agents and the like are known.
The inventors of the present invention have found that amino acid-based wetting agents are most effective in increasing the contact cooling sensation qmax value and reducing the average friction coefficient. Examples of the amino acid type wetting agent used for the nonwoven fabric sheet include pyrrolidone carboxylic acid or a salt thereof, pyrrolidine carboxylic acid or a salt thereof, acylpyrrolidine carboxylic acid or a salt thereof, and the like.

These amino acid wetting agents may be optically active pairs or racemates. These amino acid type wetting agents can be used as free carboxylic acids, but it is more desirable to use them as salts having a higher hygroscopic effect. The salts used include sodium, potassium, lithium, calcium, magnesium, zinc, ammonium, alkanolamine salts such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diiso Examples thereof include isopropanolamine salts, triisopropanolamine salts, and other organic amine salts such as triethylamine salts, and mixtures thereof.
In particular, pyrrolidone carboxylic acid or a salt thereof is a component of skin natural moisturizing factor (NMF), and is therefore more preferable because it may be used as a moisturizing agent for cosmetics.

In the nonwoven fabric sheet of this embodiment, it is important that the contact cooling sensation qmax is in the range of 0.065 to 0.150 J / cm ² / sec and the average friction coefficient is 0.98 or less. The humectant may be used in combination with other humectants such as glycerin, propylene glycol, sorbit and other NMF components.

で表されるピロリドンカルボン酸ナトリウムの水溶液である。 An aqueous solution of pyrrolidone carboxylate which is an example of an amino acid type wetting agent is preferably the following formula derived from L-glutamic acid:

An aqueous solution of sodium pyrrolidonecarboxylate represented by

Supported amount of amino acid-based wetting agent is preferably 1 to 30 g / ^{m 2,} more preferably 5 to 25 g / ^{m 2,} more preferably from 8~15g / ^{m 2.} When the loading amount of the amino acid wetting agent is less than 1 g / m ² , a moist feeling, a cool feeling, and a smooth feel are not felt at all. On the other hand, when it is more than 30 g / m ² , the moisturizer adheres to the skin and becomes sticky, and an unpleasant wearing feeling is felt.

  The amino acid-based wetting agent is different in the supported state between the synthetic fiber and the cellulose-based fiber, and in the case of the synthetic fiber, it does not penetrate inside and is supported on the fiber surface, so that a moist feeling effect can be obtained with a small amount. In the case of cellulosic fibers, the processing liquid can penetrate into the fiber during processing and be collected, so more amino acid-based wetting agents can be carried, and the moist feeling effect is further enhanced and sustained. Can do.

  The moistening effect can be enhanced by utilizing the difference in the wetting agent loading state between these synthetic fibers and cellulosic fibers. Since the synthetic fiber is supported on the fiber surface, there is a limit to the increase in the supported amount. Cellulosic fibers can permeate and capture the inside of the fiber and carry more wetting agent. However, when the carrying amount increases, a sticky feeling may be felt. By combining synthetic fiber and cellulosic fiber, the moistening effect can be improved without feeling the stickiness of the wetting agent. That is, it is a non-woven fabric for a mask excellent in climate adjustment in the mask when the mask is worn, and the inside of the mask can be kept comfortable for a long time.

  By using the non-woven sheet as the innermost layer material of the mask, it is possible to improve the touch when wearing the mask, and to migrate the moisture component of the exhaled moisture by wearing the mask and moisten the skin to the skin side. These effects can be enhanced and sustained without sacrificing a moist feeling by the composite of synthetic fibers and cellulosic fibers.

  As a composite structure for further enhancing the moist effect, the ratio of synthetic fiber to cellulosic fiber is preferably 90%: 10% to 10%: 90%, more preferably 70%: 30% to 30%: 70%. It is. The composite method of the synthetic fiber and the cellulosic fiber is not particularly limited. If the fiber is a short fiber, it is preferable to form a composite nonwoven fabric by laminating if it is a mixed cotton or long fiber nonwoven fabric.

  As processing of the nonwoven fabric sheet, an amino acid type wetting agent can be supported by a conventional method such as Dip-Nip method, gravure printing method, spray method and the like. Among these, the spray method is preferable because it can carry an amino acid-based wetting agent without compressing the base material, and particularly when used for masks and applications, since the influence on pressure loss is small. Specific examples of the spray dyeing method include a rotor damping method.

The non-woven sheet has both excellent contact cooling characteristics and low friction characteristics, so it feels cool as soon as it is worn on the face, and it remains smooth, soft and comfortable. . In order to maintain the moist feeling function, it is preferable that the thermal conductivity is large in addition to the contact cooling feeling characteristic. Therefore, a parameter of the cool contact feeling cool contact feeling qmax is in the range of 0.065~0.150J ^/ cm 2 ^/ sec, in the range of 0.072~0.140J ^/ cm 2 ^/ sec More preferred. If it is less than 0.065 J / cm ² / sec, the chilly feeling at the moment of touching is hardly felt, so the moist feeling cannot be satisfied. On the other hand, if it is larger than 0.150 J / cm ² / sec, a cool feeling at the moment of touching is strongly felt, but a sticky feeling is remarkable and it cannot withstand long-time wearing. The average friction coefficient is 0.98 or less, preferably 0.8 or less. When the average coefficient of friction is greater than 0.98, a feeling of roughness is felt, the smoothness is insufficient, and it is difficult to adjust to the skin. Furthermore, in order to maintain a moist feeling for a long time, the apparent thermal conductivity, which is a parameter of thermal conductivity, is greatly involved. Apparent thermal conductivity is preferably 0.032 W / mK or more, and more preferably 0.035 W / mK or more. If it is less than 0.032 W / mK, the cool feeling does not last. Therefore, if it is worn for a long time, the moist feeling cannot be sustained.

The nonwoven fabric sheet of this embodiment has the characteristic of satisfying the excellent touch feeling and wearing feeling to the face. The bending rigidity of the nonwoven fabric sheet also greatly contributes to this feature. The average value in the warp direction and the weft direction of the bending stiffness of the nonwoven fabric sheet alone is preferably 0.002 to 0.05 gf · cm ² / cm, more preferably 0.004 to 0.03 gf · cm ² / cm. Those satisfying this range are soft and flexible, so that they easily follow the roundness of the cheeks and the unevenness of the nose and mouth, and have an excellent fit. In addition, a feeling of stiffness is hardly felt, and a comfortable wearing feeling that is very familiar to the face can be obtained.

  The shape of the mask configured by arranging the nonwoven fabric sheet of the present embodiment in the innermost layer on the mouth side is a half mask covering a part of the face, and the shape is any of a folding type, a cup type or a flat type The shape is not particularly limited.

Hereinafter, the present invention will be specifically described with reference to examples. The main measured values of physical properties were measured by the following methods.
(1) Basis / Thickness For the basis weight, mass per unit area (g / m ² ) was calculated according to JIS L 1096A method. Similarly, the thickness (mm) was calculated in accordance with the JIS L 1096A method.

(2) Cool feeling of contact Three substrates were cut into a size of 10 cm × 10 cm, and the experiment was conducted in a standard state (20 ± 2 ° C.) using a KES-F7 Thermolab II type precision rapid thermophysical property measuring apparatus manufactured by Kato Tech. 65% ± 2% RH). The T-Box on the high temperature side is 30 ° C., the low temperature side is made of expanded polystyrene insulation, the temperature is set to 20 ° C., and the temperature difference is measured at 10 ° C. under the measurement condition of qmax (J / cm ² / sec). did.

(3) Friction coefficient The base material was cut into a size of 30 cm × 5 cm, each of three wefts was cut out, and the surface of the base material and the silicon friction element were rubbed using a KES-SE friction tester manufactured by Kato Tech. The average friction coefficient in the longitudinal direction and the weft direction was measured, and the average value of the average friction coefficients in the longitudinal direction and the weft direction was calculated.

｛式中、Ｗ：定常状態を保つのに必要な電力(Ｗ)、ｄ：試料厚さ(ｃｍ)、Ａ：熱板面積(ｃｍ^２)、ΔＴ：熱板とヒートシンクの温度差(Ｋ)（＝１０℃）｝により有効熱伝導率λ（Ｗ／ｍＫ）を算出した。
測定時間は５分とし、定常状態を保つのに必要な電力値は、４分から５分の間の時間平均値とした。 (4) Apparent thermal conductivity Three substrates were cut into a size of 10 cm × 10 cm, and the experiment was conducted in a standard state (20 ± 2) using a KES-F7 Thermolab II type precision rapid thermal property measuring device manufactured by Kato Tech. C., 65% ± 2% RH). The BT-Box on the high temperature side is set to a temperature of 30 ° C., a cooling base incorporating a Peltier element is used as a heat sink on the low temperature side, and the temperature is set to 20 ° C. The temperature difference is measured at 10 ° C., and the supply power W required to maintain the heat source temperature of 30 ° C. is measured.

{Wherein, W: Electric power (W) necessary to maintain a steady state, d: Sample thickness (cm), A: Hot plate area (cm ² ), ΔT: Temperature difference between hot plate and heat sink (K) (= 10 ° C.)}, the effective thermal conductivity λ (W / mK) was calculated.
The measurement time was 5 minutes, and the power value necessary to maintain a steady state was a time average value between 4 minutes and 5 minutes.

(5) Flexural rigidity Three base materials are cut into a size of 20 cm × 20 cm, and using a KES-FB2 pure bending tester manufactured by Kato Tech, the curvature K = −2.5 to +2.5 (cm ^−1). ), A bending test with constant velocity curvature was performed, and bending stiffness (gf · cm ² / cm) was measured.

(6) Compression characteristics Using a KES-FB3 compression tester manufactured by Kato Tech Co., Ltd., a compression / recovery test was conducted between steel plates having a circular plane with an area of 2 cm ² with a compression load of 50 gf / cm ² , and compression energy (gf · cm / cm ²⁾ was measured.

(7) Wearing sensory test In a room of 25 ° C ± 1 ° C, 50 ± 5% RH, 5 female subjects aged 20 to 50 years, moist feeling, smoothness, flexibility, soft feeling, comprehensive Judgment was made for a realistic wearing feeling. The answers were rated on a five-point scale, and the average value was shown.

[Moist feeling]
5: Very moist 4: Moist 3: 3 Neither 2: Moist 1: Not moist [smooth]
5: Very smooth 4: Smooth 3: Can't say either 2: Roughness 1: Very rough [Flexibility]
5: Very soft and adaptable to the skin 4: Soft and adaptable to the skin 3: Neither can be said 2: Hard and stiff 1: Very hard and stiff [soft feeling]
5: Very fluffy 4: Soft fluffy 3: Can't say either 2: Fluffy 1: Not fluffy at all [Overall wearing feeling]
5: Very comfortable 4: Comfortable 3: Neither 2: Uncomfortable 1: Very uncomfortable

[Example 1]
An aqueous solution of sodium pyrrolidonecarboxylate was applied to Asahi Kasei's Eltus nylon spunbond (N03030) weight per unit area of 30 g / m ² by a spray method, followed by drying at 120 ° C. for 90 seconds. As the pyrrolidone carboxylic acid aqueous solution, Ajinomoto Healthy Supply NL-50 was diluted with ion-exchanged water and used as a 50% aqueous solution. A nylon spunbond nonwoven fabric sheet having a supported amount of sodium pyrrolidonecarboxylate of 4.6 g / m ² was obtained. The characteristic values representing the moist feeling of the obtained sheet are shown in Table 1 below.

[Example 2]
In the same manner as in Example 1, a nylon spunbond nonwoven fabric sheet having a pyrrolidonecarboxylate sodium loading of 11.2 g / m ² was obtained. The characteristic values representing the moist feeling of the obtained sheet are shown in Table 1 below.

[Example 3]
Using Asahi Kasei Corporation Bemliese SD30G (cuprammonium rayon = cuprammonium filament wet spun bond) basis weight 30 g / ^{m 2,} coated with a pyrrolidone carboxylic acid sodium aqueous solution by the same method as in Example 1, supported amount 1.0 g / ^{m 2} Of copper ammonia rayon long fiber wet spunbond nonwoven fabric sheet was obtained. The characteristic values representing the moist feeling of the obtained sheet are shown in Table 1 below.

[Example 4]
In the same manner as in Example 3, a copper ammonia rayon long fiber wet spunbonded nonwoven fabric sheet having a sodium pyrrolidonecarboxylate loading of 2.7 g / m ² was obtained. The characteristic values representing the moist feeling of the obtained sheet are shown in Table 1 below.

[Example 5]
In the same manner as in Example 3, a copper ammonia rayon long fiber wet spunbond nonwoven fabric sheet having a sodium pyrrolidonecarboxylate loading of 18.5 g / m ² was obtained. The characteristic values representing the moist feeling of the obtained sheet are shown in Table 1 below.

[Example 6]
Example: Using a composite sheet obtained by hydroentanglement after copper ammonia rayon short fiber 1.4 dtex * 38 mm was web-formed with a card to form a 18 g / m ² sheet and laminated on a nylon spunbond nonwoven sheet 20 g / m ² In the same manner as in Example ^1, a nonwoven fabric sheet having a sodium pyrrolidonecarboxylate loading of 2.9 g / m ² was obtained. The characteristic values representing the moist feeling of the obtained sheet are shown in Table 1 below.

[Example 7]
Using a composite sheet in which irregularities of 5 mm were given to the composite sheet produced in Example 6 by soft embossing, a non-woven fabric sheet having a sodium pyrrolidonecarboxylate loading of 25.5 g / m ² was obtained in the same manner as in Example 1. The characteristic values representing the moist feeling of the obtained sheet are shown in Table 1 below.

[Example 8]
Using the composite sheet produced by soft embossing on the composite sheet produced in Example 6, 3 mm unevenness was obtained in the same manner as in Example 1 to obtain a pyrrolidonecarboxylate sodium loading 9.8 g / m ² nonwoven sheet. The characteristic values representing the moist feeling of the obtained sheet are shown in Table 1 below.

[Comparative Examples 1-3]
Comparative Examples 1 to 3 relate to a nonwoven fabric sheet not supporting sodium pyrrolidonecarboxylate. That is, Comparative Example 1 is a characteristic value of Ertas nylon spunbond (N03030) basis weight 30 g / m ² manufactured in Asahi Kasei Co., Ltd. used in Examples 1 and 2, and Comparative Example 2 is manufactured by Asahi Kasei Co., Ltd. used in Examples 3-5. Benlyse SD30G (copper ammonia rayon long fiber wet spunbond) characteristic value of 30 g / m ² per unit area, Comparative Example 3 is a characteristic value of the composite sheet prepared in Examples 6 and 7 that does not support sodium pyrrolidonecarboxylate It is about. The results are shown in Table 1 below.

[Comparative Example 4]
Benlyse SD30G manufactured by Asahi Kasei Co., Ltd. (copper ammonia rayon = cupra long fiber wet spunbond) weight per unit of 30 g / m ² , a 50% aqueous solution of glycerin was applied by a spray method, and a drying amount was performed at 120 ° C. for 90 seconds. A 3.0 g / m ² copper ammonia rayon long fiber wet spunbond nonwoven fabric sheet was obtained. The characteristic values representing the moist feeling of the obtained sheet are shown in Table 1 below. The moist feeling of the obtained sheet was insufficient.

[Example 9]
Asahi Kasei's polypropylene spunbond P03020 basis weight 20 g / m ² , Kuraray's polypropylene meltblown nonwoven fabric (charging process) basis weight 20 g / m ² as the outer layer material, and pyrrolidone carboxylic acid support produced in Example 1 as the inner layer material the amount 4.6 g / ^{m 2} nylon spunbonded arranged, horizontal 17cm, folded the vertical 17cm nonwoven as pleats in the transverse direction can be three rows, product size horizontal 17cm, vertical 9cm, place the rubber ear-hook on both horizontal A folding mask was prepared. The wearing test results of the created mask are shown in Table 2 below.

[Example 10]
Asahi Kasei's polypropylene spunbond P03020 basis weight 20 g / m ² , Kuraray's polypropylene melt-blown nonwoven fabric (charging process) basis weight 20 g / m ² as the outer layer material, and pyrrolidone carboxylic acid support produced in Example 4 as the inner layer material A 2.7 g / m ² copper ammonia rayon long fiber wet spunbond nonwoven fabric sheet was placed to produce a foldable mask similar to Example 9. The wearing test results of the created mask are shown in Table 2 below.

[Example 11]
Asahi Kasei's polypropylene spunbond P03020 basis weight 20 g / m ² as the outer layer material, Kuraray's polypropylene meltblown nonwoven fabric (charging process) basis weight 20 g / m ² as the intermediate layer, and pyrrolidone carboxylic acid support produced in Example 6 as the inner layer material An amount of 2.9 g / m ² composite sheet was placed, and a folding mask similar to that in Example 9 was produced. The wearing test results of the created mask are shown in Table 2 below.

[Example 12]
Asahi Kasei's polypropylene spunbond P03020 basis weight 20 g / m ² , Kuraray's polypropylene meltblown nonwoven fabric (charging process) basis weight 20 g / m ² as the outer layer material, and pyrrolidone carboxylic acid supported in Example 4 as the inner layer material An amount of 18.5 g / m ² copper ammonia rayon long fiber wet spunbond nonwoven fabric sheet was placed to produce a folding mask similar to that in Example 9. The wearing test results of the created mask are shown in Table 2 below.

[Example 13]
Asahi Kasei's polypropylene spunbond P03020 basis weight 20 g / m ² , Kuraray's polypropylene melt-blown nonwoven fabric (charging process) basis weight 20 g / m ² as the outer layer material, and pyrrolidone carboxylic acid support produced in Example 6 as the inner layer material An amount of 9.8 g / m ² composite sheet was placed, and a folding mask similar to that in Example 9 was produced. The wearing test results of the created mask are shown in Table 2 below.

[Comparative Example 5]
As the outer layer material, manufactured by Asahi Kasei Corporation polypropylene spunbond P03020 basis weight 20 g / ^{m 2,} polypropylene meltblown nonwoven fabric as the intermediate layer (charging process) basis weight 10 g / ^{m 2,} Asahi Kasei nylon spunbonded N03030 basis weight 30g used in Comparative Example 1 and an inner layer material / M ² was arranged, and the same folding mask as in Example 8 was produced. The wearing test results of the created mask are shown in Table 2 below.

  When used as a mask, the non-woven fabric sheet for a mask according to the present invention has a good feel when worn, has a sufficiently moist feeling and is durable, and is easily rubbed with the mask, and is prone to rough skin. Since it has an excellent moisturizing effect that moisturizes the skin of the cheek, mouth, nose and chin, it can be suitably used as a non-woven sheet for a mask.

Claims (6)

Non-woven fabric for masks made of synthetic fiber or cellulosic fiber, having a contact cooling sensation qmax of 0.065 to 0.150 J / cm ² / sec and an average friction coefficient of 0.98 or less Sheet.   The nonwoven fabric sheet for masks of Claim 1 whose apparent thermal conductivity is 0.032 W / mK or more.   The nonwoven fabric sheet for masks according to claim 1 or 2, which carries an amino acid-based wetting agent.   The nonwoven fabric sheet for masks according to claim 3, wherein the amino acid-based wetting agent is sodium pyrrolidonecarboxylate.   The nonwoven fabric sheet for masks according to any one of claims 1 to 4, wherein the cellulosic fiber is copper ammonia rayon.   The mask which has distribute | arranged the nonwoven fabric sheet for masks of any one of Claims 1-5 to the innermost layer by the side of a mouth.