JP6480335B2 - Antibacterial non-woven sheet, liquid-containing sheet, and face mask - Google Patents

Description

  The present invention provides a substrate effective for adsorbing and absorbing a fluid composition containing a cosmetic composition having functions such as cleansing, wiping, moisturizing, and beauty of skin such as excrement, sebum and cosmetics. Relates to an antimicrobial non-woven sheet. Further, the present invention is a liquid-impregnated sheet integrated with an antibacterial non-woven sheet by impregnating a flowable composition containing a cosmetic component, a pharmaceutically active component and the like, and in particular, an antibacterial face About the mask.

  Conventionally, a water-containing sheet such as a wet tissue, a disposable towel, or a sheet-like cosmetic for covering the skin, in which water or an aqueous fluid composition is integrated with a non-woven sheet, hydrophilic fibers such as rayon or hydrophilic fibers A non-woven fabric obtained by high-pressure water flow treatment on a fiber web composed of a blend of heat-adhesive composite fibers and various non-woven fabrics obtained by functionally improving the non-woven fabric has been proposed. However, when hydrophilic fibers such as rayon are wet, wrinkles are generated due to a decrease in the stiffness of the fibers or shrinkage of the fibers, which causes problems such as deterioration in workability and liquid retention, and deterioration in form stability. There is a problem that moisture is taken into the fiber and the effect of the moisture can not be effectively used. In order to ameliorate the above problems, hydrophilic short fibers are contained at 40% by weight or more on both surfaces of a heat-bonded non-woven fabric containing 50% by weight or more of hydrophobic synthetic short fibers and having constituent fibers joined together by partial thermocompression bonding A composite wet sheet in which the resulting fibrous web is laminated and entangled is proposed (see, for example, Japanese Patent Application Laid-Open No. 2001-336053 (Patent Document 1)).

  However, in the sheet produced by fusing the heat-adhesive component as in Patent Document 1, the shrinkage when wet is improved but the entire sheet becomes hard and the running property to the skin decreases. Furthermore, since the sheet surface is mainly composed of hydrophilic fibers, the chemical solution impregnated in the fibers can be taken in and can not be sufficiently wiped off and released to the object. In addition, the spread of social needs has made it necessary to have a function to further incorporate various fluid compositions.

  In order to solve these, for example, JP-A 2008-261067 (patent document 2) has a fiber length of 30 to 60 mm as a water-containing sheet which is good in touch, excellent in water retention and release, and shape stability. A solvent-spun cellulosic fiber having a core and a sheath-core type composite fiber are entangled with each other, wherein the sheath-core type composite fiber comprises a sheath part and a core part, and the sheath part is ethylene-vinyl A non-woven sheet which is an alcohol-based copolymer and in which the core portion is made of a hydrophobic resin and the diameter of which is 5 to 15 μm has been proposed.

  In recent years, these nonwoven sheets have been required to have antibacterial properties, and in particular, preservatives and antibacterial agents such as parabens have been widely used. However, there is a condition that should be restricted to the use of paraben such as suspicion of endocrine disrupting action in butyl paraben, high possibility of transient irritation expression in the whole paraben, etc. If it adheres to the skin, it may cause rough skin, rash etc. Because there is a risk of causing skin problems, it is currently desirable to aim for antiseptic and antifungal use with paraben free (non use of paraben).

JP 2001-336053 A JP, 2008-261067, A

  That is, the problem to be solved by the present invention is that it has excellent antiseptic and antibacterial properties without containing parabens, etc., is soft and has a good touch, and has good impregnatability when impregnated with various fluid compositions. It is possible to provide an antibacterial non-woven fabric sheet which has a liquid retention property, can efficiently release the flowable composition by pressure, etc., and is excellent in form stability by reducing shrinkage and shrinkage due to impregnation of the flowable composition. It is in. Another object of the present invention is to provide a liquid-containing sheet which has a good touch and is excellent in the liquid retaining property, releasing property and form stability of the flowable composition including water and the like.

In view of the above problems, we have studied intensively and arrived at the present invention.
That is, in the first invention, the antibacterial ethylene-vinyl alcohol copolymer containing the inorganic antibacterial particles dispersed in the inside is present in at least a part of the fiber surface, and the average particles of the inorganic antibacterial particles are contained. An antibacterial fiber having a diameter of 0.01 to 20 μm and having an ethylene content of 10 to 70 mol% of the antibacterial ethylene-vinyl alcohol copolymer, and a solvent-spun cellulose-based fiber are mutually entangled. It is an antibacterial nonwoven fabric sheet characterized by becoming.

  A second invention is an antibacterial nonwoven sheet according to the first invention, wherein the fiber length of the solvent-spun cellulose-based fiber is 5 to 60 mm, and these fibers are entangled with each other.

  In a third invention, the antibacterial fiber of the first invention and / or the second invention is a sheath-core type composite fiber, and the sheath is an inorganic antibacterial having an average particle diameter of 0.01 to 20 μm. An antimicrobial non-woven sheet characterized in that it is an antimicrobial ethylene-vinyl alcohol copolymer containing fine particles dispersed therein, and the core is made of a hydrophobic resin and its diameter is 5 to 15 μm. It is.

  4th invention is an antibacterial nonwoven fabric sheet of the 1st-3rd invention, Comprising: The surface of the said antibacterial nonwoven fabric sheet has an unevenness | corrugation, It is an antibacterial nonwoven fabric sheet characterized by the above-mentioned.

  5th invention is an antibacterial nonwoven fabric sheet of the 1st-4th invention, Comprising: The antibacterial nonwoven fabric sheet characterized by including 30-90 weight% of said antibacterial fibers.

  A sixth invention is the antibacterial nonwoven sheet of the fifth invention, characterized in that it contains 40 to 90% by weight of the antibacterial fiber, and the Young's modulus of the antibacterial fiber is 25 cN / dtex or more. It is an antibacterial non-woven sheet.

  A seventh invention is a liquid-containing sheet in which the antibacterial nonwoven fabric sheet of the first to sixth invention and the flowable composition are integrated.

  The eighth invention is the liquid-containing sheet of the seventh invention, wherein the flowable composition contains water.

  A ninth invention is the liquid-containing sheet of the seventh invention, wherein the flowable composition includes a cosmetic.

  A tenth invention is a liquid-containing sheet according to the ninth invention, which is a liquid-care sheet which is a skin care sheet.

The eleventh invention is a liquid-containing sheet according to the ninth or tenth invention, wherein 900% by weight of the flowable composition is impregnated with respect to its own weight and removed by applying a load of 260 g / cm ² for 1 minute. When it is a liquid-containing sheet characterized in that reversion to compression in the thickness direction is 35% or more in 5 minutes.

  A twelfth invention is a face mask using the liquid-containing sheet of the ninth to eleventh inventions.

  By the above-described means, the present invention relates to absorption and absorption to the skin of a fluid composition containing a cosmetic having functions such as cleansing, wiping, moisturizing, and beauty of the skin such as excrement, sebum, and cosmetics. While providing the antimicrobial nonwoven fabric sheet used as an effective base material, the liquid containing sheet containing this antibacterial nonwoven fabric sheet, and a face mask are provided.

  In the first invention, both the fiber in which the antibacterial ethylene-vinyl alcohol copolymer containing the inorganic antibacterial fine particles dispersed therein is present in at least a part of the fiber surface and the solvent-spun cellulose fiber are both hydrophilic. As well as having a property, the two fibers form a non-woven sheet by being entangled with each other, so that they have a soft touch. In addition, the fiber in which the antibacterial ethylene-vinyl alcohol copolymer is present in at least a part of the fiber surface and the solvent-spun cellulose-based fiber both have high impregnatability of the flowable composition, and the flowability composition such as water quickly Can be impregnated.

  In addition, the antibacterial ethylene-vinyl alcohol copolymer has a hydrophobic portion, and the ethylene content is adjusted, and the antibacterial ethylene-vinyl alcohol copolymer is present on at least a part of the fiber surface. Various flowable compositions can be impregnated by adjusting the content of fibers and solvent-spun cellulosic fibers.

  Furthermore, the solvent-spun cellulose-based fiber has high liquid retention of a hydrophilic fluid composition such as water, an aqueous solution, a polar solvent, and an emulsion thereof. On the other hand, the fiber in which the antimicrobial ethylene-vinyl alcohol copolymer is present on at least a part of the fiber surface has low liquid retention. For this reason, the flowable composition in the vicinity of the fiber in which the antibacterial ethylene-vinyl alcohol copolymer is present in at least a part of the fiber surface is easily exuded to the outside by pressure or the like. Furthermore, the fiber in which the antibacterial ethylene-vinyl alcohol copolymer released the flowable composition is present in at least a part of the surface of the fiber is highly impregnated and further depletes the flowable composition from the solvent-spun cellulose-based fiber, The flowable composition oozes out continuously at an appropriate rate. The antibacterial non-woven fabric sheet of the present invention is a fluid composition in which the fiber in which the antibacterial ethylene-vinyl alcohol copolymer is present in at least a part of the fiber surface and the solvent-spun cellulose-based fiber are mutually entangled. You can move things quickly. Since the releasability of the flowable composition impregnated by these becomes high, the flowable composition can be effectively used.

  With respect to the antibacterial ethylene-vinyl alcohol copolymer, fibers and / or non-woven sheets are obtained by physical extrinsic factors such as abrasion by causing inorganic antibacterial fine particles having a specific particle size to be present dispersed in the inside. It is possible to prevent the falling off of the inorganic antibacterial fine particles from the above, and to continuously exhibit the antibacterial performance.

  The second invention is a fiber having an antibacterial ethylene-vinyl alcohol copolymer present in at least a part of the fiber surface, and a fiber length of the solvent-spun cellulose-based fiber being 5 to 60 mm. Appropriate flexibility and elasticity can be secured, and a soft touch and a feeling of fit to the skin can be realized. Moreover, in manufacture by the fiber entanglement in dry condition especially, while being excellent in the impregnation of a fluid composition, a bulky nonwoven fabric sheet excellent also in cushioning properties is obtained.

  The third invention is a sheath-core type composite fiber having an antibacterial ethylene-vinyl alcohol copolymer as a sheath and a hydrophobic resin as a core, and the diameter of the core is 5 to 15 μm. The antibacterial non-woven sheet can be made to be resistant to shrinkage due to the impregnation of water, to be less prone to wrinkles, and to not impair the liquid retention property and the workability. In addition, since the core of the skin can be felt at the time of use, the skin feels soft and, for example, in applications such as a base material for cosmetics in which close contact with the skin is important, the smoothness to the skin becomes high.

  In the fourth invention, the surface of the antibacterial non-woven fabric sheet is uneven, so that an air layer is formed between the skin and the skin when it is in close contact with the skin, so it is hard to be stuffed. In addition, since the surface of the antibacterial nonwoven fabric sheet is uneven, the surface area is increased, and the adhesion to the skin is enhanced. In applications such as wet tissues, disposable towels, liquid containing sheets using a flowable composition containing a cosmetic, and the like, the flowable composition is retained in the recess to allow the flowable composition to be retained in the recess. Since the release of a good flowable composition can be obtained while the easily accessible convex portion is being scratched, the touch is even better. In addition, the liquid storage effect of the flowable composition is enhanced by the recess, and the flowability composition of wide polarity can be maintained without adjusting the overall polarity by the copolymerization ratio of the antibacterial ethylene-vinyl alcohol copolymer and the like. .

  The fifth invention is the antibacterial nonwoven fabric sheet of the present invention, containing 30 to 90% by weight of the antibacterial fiber and 70 to 10% by weight of solvent-spun cellulose-based fiber, so that the skin feels good and fluidity When the composition is impregnated and used, the impregnating, releasing, and hydrophilic flowable composition has good retention of liquid, and the shape stability due to the absence of shrinkage and stiffness reduction of the fiber upon impregnation. It is possible to make an antibacterial non-woven sheet very excellent in balance such as.

  A sixth invention is the antibacterial nonwoven fabric sheet of the present invention, containing 40 to 90% by weight of antibacterial fiber, and having a Young's modulus of 25 cN / dtex or more of the antibacterial fiber while having antibacterial properties. And it can be soft, has a good touch, can be rapidly impregnated with a flowable composition containing a cosmetic such as a cosmetic solution, and can be made into an antibacterial non-woven sheet to which adequate stiffness and elasticity are added.

  The seventh invention is a liquid-containing sheet in which the antibacterial nonwoven fabric sheet of the present invention and the flowable composition are integrated, so that the touch is good, and the liquid retention property, the release property, and the form stability of the flowable composition. It is suitable for applications such as wet tissues, disposable towels, skin care sheets and face masks.

  The eighth invention is a liquid-containing sheet (water-containing sheet) in which the flowable composition contains water, which has a good touch, is excellent in water retention property, release property, and form stability, and is suitable for the above-mentioned applications .

  The ninth invention is a liquid-containing sheet containing a cosmetic, the flowable composition having a good touch, a good cosmetic releasability, and an excellent form stability, so that it can be easily and cleanly attached to the skin.

  In the tenth invention, by using the liquid-containing sheet described above, it is possible to make a skin care sheet excellent in the impregnation property and the liquid retention property of the flowable composition containing the cosmetic.

In the eleventh invention, when a cosmetic liquid (cosmetic agent) is impregnated in 900% by weight with respect to its own weight and removed by applying a load of 260 g / cm ² for 1 minute, reciprocation for compression in the thickness direction is 5 minutes By being 35% or more, it can be set as the liquid-containing sheet which can fully maintain the return of the cosmetics of a press part.

  According to a twelfth aspect of the present invention, by using the liquid containing sheet described above, the cosmetic liquid (cosmetic) can be made into a face mask which can sufficiently penetrate the skin.

It is the schematic for demonstrating the measuring method of the original repetition position in an Example. It is the schematic for demonstrating the measuring method of the liquid return to the original fabric in an Example.

<Antibacterial non-woven sheet>
The antibacterial nonwoven fabric sheet of the present invention is a fiber having an antibacterial ethylene-vinyl alcohol copolymer at least partially present on the surface of the fiber (hereinafter, referred to as "antibacterial EVOH-containing fiber" or simply "antibacterial fiber" And the solvent-spun cellulose-based fibers are entangled with each other, and the above-mentioned uniformly mixed fibers are made into a non-woven fabric by a hydroentanglement method or the like, so that soft and bulky fiber entanglement is caused. It is a realization of the body.

  In the antibacterial fiber used in the present invention, an ethylene-vinyl alcohol copolymer containing inorganic antibacterial fine particles dispersed in the inside is present on at least a part of the surface of the fiber.

  The antibacterial ethylene-vinyl alcohol copolymer used in the present invention has a ratio of ethylene units (copolymerization ratio) of 10 to 70 mol%, and the balance is vinyl alcohol units alone, or vinyl alcohol and other vinyls. It consists of a repeating unit of a system monomer. The proportion of ethylene units is preferably 20 to 55 mol%, more preferably 30 to 50 mol%. When a vinyl alcohol unit and another vinyl monomer unit are used in combination, the proportion of the vinyl alcohol unit is not particularly limited, but is usually larger than that of other vinyl monomer units, preferably in molar ratio. (Vinyl alcohol unit): (other vinyl monomer unit) = 55: 45 to 99.9: 0.1, more preferably 70:30 to 99.9: 0.1, particularly preferably 80: 20 It is 99.9: 0.1.

  When the proportion of ethylene units in the ethylene-vinyl alcohol copolymer is less than 10 mol%, the spinnability at the time of fiberization becomes poor, and single yarn breakage at the time of spinning and breakage breakage increase. Moreover, it is not flexible. Furthermore, the problem of swelling with water at low temperature (20 to 60 ° C.) to change the form also occurs.

  On the other hand, when the proportion of ethylene units exceeds 70 mol%, the proportion of vinyl alcohol units, that is, hydroxyl groups inevitably decreases, so the hygroscopicity decreases and the effect of the inorganic antibacterial fine particles retained inside the copolymer Is not preferable because it can not be obtained sufficiently.

  The ethylene-vinyl alcohol copolymer can be obtained by saponifying a vinyl acetate moiety of an ethylene / vinyl acetate copolymer, and the saponification of vinyl alcohol units in the ethylene-vinyl alcohol copolymer The degree is not particularly limited, but is preferably 90 to 99.99 mol%, more preferably 95 to 99.98 mol%, and particularly preferably 96 to 99.97 mol%. When the degree of saponification is too small, not only the physical properties such as strength are lowered, but also the thermal stability is lowered, and the stability is lowered by thermal decomposition and gelation. On the other hand, if the degree of saponification is too large, production of the fiber itself becomes difficult.

  The number average molecular weight of the ethylene-vinyl alcohol copolymer is not particularly limited, but is preferably 5,000 to 25,000, and more preferably 8,000 to 20,000. The number average molecular weight as referred to herein is a value measured by the GPC method.

  The ethylene-vinyl alcohol copolymer is commercially available, for example, from Kuraray Co., Ltd. under the trade name of "EVAL" and from Nippon Synthetic Chemical Industry Co., Ltd. under the trade name of "SOANOL". It is. Alternatively, ethylene / vinyl acetate copolymer may be produced from ethylene and vinyl acetate commercially available by radical polymerization or the like, and it may be saponified and used.

  The type of the inorganic antibacterial fine particles used in the present invention is not particularly limited, and any of the inorganic antibacterial fine particles which do not cause volatilization, decomposition, deterioration, etc. by heating at melt spinning of fibers, etc. You can use it.

  Examples of the inorganic antibacterial fine particles include inorganic antibacterial fine particles in which metal ions having an antibacterial activity such as silver ions, copper ions, zinc ions and tin ions are contained in an inorganic carrier, titanium oxide inorganic fine particles, etc. These can be mentioned, and one or more of these can be used.

  The type of the inorganic carrier used in the present invention is not particularly limited as long as it can contain metal ions having antibacterial properties and can suppress the deterioration of the fiber. For example, as such an inorganic carrier, it has a clathrate lattice An inorganic carrier is preferably used. The inclusion lattice is a gap that allows atoms and molecules to enter, and the inorganic powder having this inclusion lattice has the property of being able to repel molecules into a portion of a structure having a minute layer or cage-like cavity.

  As an inorganic support having an inclusion lattice, zeolite, layered phosphate (zirconium phosphate, titanium phosphate, calcium phosphate etc.), layered clay mineral, transition metal chalcogenide, graphite, transition metal oxide, layered oxygenate etc. Can be mentioned. These inorganic carriers may be used alone or in combination of two or more.

  Among them, zeolite having high ion exchange ability and zirconium phosphate are particularly preferable. Among the above-mentioned inorganic antibacterial fine particles, in the present invention, inorganic antibacterial fine particles in which silver ions are held on the above-mentioned inorganic carrier are particularly preferably used.

  The average particle diameter of the inorganic antibacterial fine particles to be contained in the ethylene-vinyl alcohol copolymer used in the present invention is 0.01 to 20 μm, preferably 0.1 to 10 μm, and 0.3 to 6 μm. It is more preferable that If the average particle diameter of the inorganic antibacterial fine particles is larger than 20 μm, it is likely to cause thread breakage and filter clogging during spinning, and it is also not preferable because the falling of inorganic antibacterial fine particles from fibers is likely to occur. In order to obtain thinner fibers, the inorganic antibacterial fine particles must be smaller than the fiber diameter, and the ratio of the inorganic antibacterial fine particle diameter / fiber diameter is preferably 0.8 or less. On the other hand, when the average particle size of the inorganic antibacterial fine particles is less than 0.01 μm, aggregation between the inorganic antibacterial fine particles is likely to occur during kneading, and the particles are uniformly dispersed in the ethylene-vinyl alcohol copolymer. It is not preferable because it becomes difficult.

  The addition amount of the inorganic antibacterial fine particle to be contained in the antibacterial ethylene-vinyl alcohol copolymer used in the present invention is 0.01 to 10% by weight based on the weight of the ethylene-vinyl alcohol copolymer. Is preferable, 0.1 to 5% by weight is more preferable, and 0.5 to 1.5% by weight is particularly preferable. Inorganic particles in which at least 90% of the ion exchange capacity or metal ion adsorption capacity is ion-exchanged or adsorbed by an antibacterial metal ion, depending on the ion exchange capacity or adsorption amount by the antibacterial metal ion in the inorganic particles Even in the case of using inorganic metal ion holding inorganic fine particles), when the addition amount of the antibacterial metal ion holding inorganic fine particles is less than 0.01% by weight, it is difficult to impart sufficient antibacterial performance to the fiber, and in particular the durability Antibacterial performance is difficult to obtain. On the other hand, when the addition amount of the antibacterial metal ion holding inorganic fine particles exceeds 10% by weight, although the antibacterial performance is sufficient, aggregation between the inorganic antibacterial fine particles is easily generated in the fiberization step, clogging of the filter, etc. It is not preferable because it may occur.

  In addition, the ethylene content (E: mol%) of the ethylene-vinyl alcohol copolymer used in the present invention and the ratio (W: wt%) of inorganic antibacterial fine particles in the ethylene-vinyl alcohol copolymer And may have the relationship of the formula shown below.

For example,
1 ≦ (100−E) × W ≦ 90
And preferably
5 ≦ (100−E) × W ≦ 80
It is.

  The antimicrobial EVOH-containing fiber of the present invention is not particularly limited as long as it has an antimicrobial ethylene-vinyl alcohol copolymer containing inorganic antimicrobial fine particles dispersed therein at least on the outer surface, It may be a fiber consisting of an antibacterial ethylene-vinyl alcohol copolymer alone or a composite fiber with another thermoplastic polymer.

  The other thermoplastic polymers used in the present invention are not particularly limited as long as they can be combined with the antibacterial ethylene-vinyl alcohol copolymer, and a wide variety of types can be used depending on the purpose of the fiber. For example, as other thermoplastic polymers, polyolefin resins, polyester resins, polyamide resins, polyvinyl chloride, polyvinylidene chloride, styrene resins, polyvinyl acetate resins, acrylic resins, polylactic resins, Thermoplastic polymers such as polycarbonate resins and thermoplastic elastomers can be exemplified. In addition, you may use the ethylene-vinyl alcohol-type copolymer which does not have antibacterial property as another thermoplastic polymer.

  Among the above, it is preferable to use polyolefin resins, polyester resins, and polyamide resins from the viewpoint of heat resistance, fiber formability and dimensional stability, and hydrophobic resins such as polyolefin resins and polyester resins are further preferable. Particularly preferred. This point will be described later.

  As a polyolefin resin, a polypropylene, polyethylene, etc. are preferable, and the other unit which can be copolymerized may be contained also in these polyolefin resin.

Examples of polyester resins include aromatic polyester resins (polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate etc.) such as poly C _2-4 alkylene arylate resins, in particular polyethylene such as PET Terephthalate resins are preferred. The polyethylene terephthalate resin may contain, in addition to ethylene terephthalate units, other dicarboxylic acids (eg, isophthalic acid, naphthalene-2,6-dicarboxylic acid, phthalic acid, 4,4'-diphenylcarboxylic acid, bis (carboxyphenyl) ethane) , 5-sodium sulfoisophthalic acid, etc. and diols (eg, diethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, cyclohexane-1,4-dimethanol, A unit composed of polyethylene glycol, polytetramethylene glycol, etc.) may be contained in a proportion of 20 mol% or less.

  Examples of polyamide resins include aliphatic polyamides such as polyamide 6, polyamide 6-6, polyamide 6-10, polyamide 10, polyamide 12, polyamide 6-12, and copolymers thereof, aromatic dicarboxylic acids and aliphatic diamines. Preferred are semi-aromatic polyamides synthesized from These polyamide resins may also contain other copolymerizable units.

  When the antibacterial EVOH-containing fiber of the present invention is a composite fiber, the weight ratio of ethylene-vinyl alcohol copolymer: other thermoplastic polymer is 10:90 to 90:10. Is desirable. If the ratio is out of this range, the composite ratio becomes unbalanced, which causes problems such as bending of the discharged yarn after nozzle discharge, and the spinnability becomes poor, which is not preferable. The composite ratio of ethylene-vinyl alcohol copolymer: other thermoplastic polymer is more preferably 30:70 to 70:30 by weight.

  As a composite form in the composite fiber, sheath-core type, sea-island type, bonding, as long as it has an ethylene-vinyl alcohol copolymer containing inorganic antibacterial fine particles in at least a part of the outer surface. It may be any form such as a type, a mixed type of them and the like. In the case of the sheath-core type, any of a two-layer sheath-core type and a multilayer sheath-core type having three or more layers may be used. In the case of the sea-island type, the shape, number, and dispersion state of the islands can be arbitrarily selected, and a part of the islands may be exposed on the fiber surface. Furthermore, in the case of the bonding type, in the fiber cross section perpendicular to the longitudinal direction of the fibers, the bonding surface may be linear, arc, or any other arbitrary arbitrary curved shape, and plural The bonded portions may be parallel, radial, or any other shape.

  Among the above-mentioned composite forms, a sheath-core type composite fiber is particularly preferable in view of the antibacterial performance because an ethylene-vinyl alcohol copolymer containing inorganic antibacterial fine particles is disposed on the entire surface of the fiber. Furthermore, when it is set as the antibacterial nonwoven fabric sheet of this invention, rigidity will fall by liquid absorption (absorption of a fluid composition), using the single fiber of the ethylene-vinyl alcohol copolymer containing inorganic type antimicrobial fine particles. It is difficult to maintain the space between fibers due to the influence of liquid absorption and external force applied at the time of the process such as manufacturing, processing and packaging, and its use. It may be difficult to ensure excellent liquid retention and workability. On the other hand, by using a sheath-core type composite fiber and using a hydrophobic resin for the core, the core does not absorb liquid even if the liquid is absorbed in the sheath, and a change in rigidity does not occur. It is also possible to maintain the desired bulkiness, that is, the porosity, and to ensure the liquid absorption while maintaining the stiffness of the antibacterial non-woven sheet even in the wet state, and also to maintain the feel when suppressed by the skin. Becomes possible.

  That is, in order to ensure a high porosity in the antibacterial nonwoven sheet of the present invention, it is preferable to form the antibacterial nonwoven sheet from fibers having a high Young's modulus (initial tensile resistance) and high bending elasticity. In particular, in order to ensure high fiber elasticity even when the antibacterial non-woven fabric sheet is in a liquid-absorbed state in these processing steps, it is preferable that the constituent fibers be made of a highly elastic resin. As the Young's modulus is higher, the porosity in the case of being made into a non-woven fabric can be maintained, so the liquid retention can be maintained and the workability can be improved.

  In the antibacterial nonwoven fabric sheet of the present invention, when the content of the antibacterial EVOH-containing fiber described later is 40 to 90% by weight, the Young's modulus of the antibacterial EVOH-containing fiber is preferably 25 cN / dtex or more. In particular, the Young's modulus of the antimicrobial EVOH-containing fiber is more preferably 25 to 90 cN / dtex, still more preferably 30 to 70 cN / dtex, and particularly preferably 35 to 60 cN / dtex. When the Young's modulus of the antimicrobial EVOH-containing fiber is too low, the stiffness and elasticity of the resulting antimicrobial nonwoven sheet can not be improved. The structure of the antibacterial EVOH-containing fiber is not particularly limited as long as it has the above-mentioned Young's modulus, and it is a fiber of an ethylene-vinyl alcohol copolymer alone containing inorganic antibacterial fine particles (fiber of a single phase). Although it may be used, a sheath-core type composite fiber is preferable because it is easy to make the elasticity, the liquid retaining property and the liquid releasing property compatible with each other.

  In the case where the antibacterial EVOH-containing fiber used in the present invention is a sheath-core type composite fiber, the sheath is preferably made of a hydrophilic resin in order to secure wettability and liquid retention. The sheath composed of a hydrophilic resin is for taking up the flowable composition up to the inside of the antibacterial non-woven sheet when the flowable composition containing a cosmetic (cosmetic fluid) etc. is added to the antibacterial non-woven sheet As well as playing an important role, it plays a role to keep the large amount of cosmetic that has been incorporated into the antibacterial non-woven sheet from dripping when handling at the time of use.

  Resins with a higher Young's modulus than ethylene-vinyl alcohol copolymers, and resins excellent in spinnability in combination with ethylene-vinyl alcohol copolymers, include polyolefin resins and polyester resins; Polyester resin is optimal in that the shrinkage of the antibacterial non-woven fabric sheet can be suppressed and the workability can be improved.

  In order to maintain the porosity of the antibacterial non-woven fabric sheet, maintain a large amount of liquid retention, to give stiffness to the non-woven fabric, and to improve the workability when wet, sheath-core type composite fiber is preferable, and the diameter of the core part Is preferably 5 to 15 μm. More preferably, the diameter of the core portion is 8 to 12 μm. As described above, it is preferable to use a hydrophobic resin, particularly a polyester resin, for the core. If the diameter of the core portion is less than 5 μm, the stiffness of the fiber is reduced, and as a result, the density of the non-woven fabric is increased, which tends to cause a problem of decreasing the amount of impregnation of the flowable composition. Furthermore, the stiffness of the non-woven fabric may also be reduced, and in particular, the spreadability and the mountability in the state of being impregnated with the flowable composition may be reduced. On the other hand, when the diameter of the core exceeds 15 μm, the stiffness of the fiber becomes too strong, so a liquid containing sheet (described later) which is used to impregnate a flowable composition containing a cosmetic, which is used particularly to cover the face In this case, the lineage to the face may decrease, and the density of the non-woven fabric decreases due to the strength of the fibers, and the inter-non-fiber distance in the non-woven fabric becomes too long to hold the cosmetic between the fibers and unnecessarily discharge the liquid It becomes easy to do.

  In addition, the cross-sectional shape of the antimicrobial EVOH-containing fiber of the present invention may be any shape, and may be circular or irregular. In the case of a deformed cross section, for example, a flat shape, an oval, a triangle, a quadrangle, a pentagon, a hexagon, a heptagon, a polygon such as octagon, a T shape, an H shape, a V shape, a dog bone (I shape Shape, multi-leaf shape such as 3 to 8 leaf shape, and the like, and may have a hollow cross-section shape or the like.

  The fineness of the antibacterial EVOH-containing fiber used in the present invention can be selected, for example, from the range of 0.01 to 100 dtex, preferably 0.5 to 30 dtex, and more preferably 1.0 to 10 dtex. When the denier of the antibacterial EVOH-containing fiber is less than 0.01 dtex, falling of inorganic antibacterial fine particles from the fiber is likely to occur, and when the denier of the antibacterial EVOH-containing fiber exceeds 100 dtex, the antibacterial present inside the resin Liquid performance sheet impregnated with a flowable composition containing a cosmetic, especially used to cover the face, is used, in particular, a face mask, because the performance of the agent is not sufficiently exerted and the fiber becomes too strong. In the case of (described later), the lineability to the face may be reduced, and the density of the non-woven fabric is reduced due to the strong stiffness of the fibers, and the inter-non-woven fabric distance becomes too large to hold the cosmetic between the fibers. It is not preferable because it becomes easy to release the liquid.

  The antimicrobial EVOH-containing fiber to be used in the present invention, or a fiber product using the fiber is further added to a conventional additive, for example, a stabilizer (a heat stabilizer such as a copper compound, a UV absorber, a light stabilizer, an antioxidant And the like), fine particles, colorants, fluorescent whitening agents, antistatic agents, flame retardants, deodorants, plasticizers, lubricants, crystallization rate retarders and the like. These additives may be used alone or in combination of two or more. These additives may be contained in the fiber or may be carried on the surface of the fiber assembly.

  The method for producing the antimicrobial EVOH-containing fiber used in the present invention is not particularly limited. For example, in the case of forming a bicomponent fiber with a hydrophobic resin, each resin is melted in a separate extruder. It can be obtained by kneading and subsequently introducing the two resins to a spinning head and discharging from the same spinning nozzle and taking it off with a take-up roller.

  In addition, the antibacterial EVOH-containing fiber used in the present invention is usually stretched and used, but the stretching method is a 1-step stretching between hot rolls when the fiber discharged from the nozzle at the time of spinning is taken up by a take-off roller. A two-step method may be adopted, in which the film is drawn once and then heat drawn at low speed in a water bath or a hot air oven.

  The aforementioned antimicrobial EVOH-containing fibers are excellent in touch and hydrophilicity. However, for example, when 100% of antimicrobial EVOH-containing fibers are used to make an antimicrobial nonwoven fabric sheet, the impregnating properties when impregnated with an aqueous flowable composition are excellent, but the fibers themselves have low water absorption. In addition, the liquid absorption speed is low, and it is difficult to retain the retained aqueous flowable composition in the sheet space. Therefore, when it is used by impregnating the aqueous flowable composition, it takes time to absorb the liquid and the efficiency of workability is lowered, and some of the aqueous flowable composition is unnecessarily released from the inside of the sheet and flowed off The antibacterial nonwoven fabric sheet of the present invention does not use 100% of the antibacterial EVOH-containing fiber, but uses the antibacterial EVOH-containing fiber in combination with the solvent-spun cellulose-based fiber and is entangled with each other. is important.

  In the antibacterial nonwoven fabric sheet of the present invention, the content of the antibacterial EVOH-containing fiber is preferably 30 to 90% by weight, and more preferably 40 to 90% by weight. The lower limit of the content of the antimicrobial EVOH-containing fiber is more preferably 50% by weight or more, particularly preferably 60% by weight or more, and the upper limit of the content of the antimicrobial EVOH fiber is more preferably 80% by weight or less Also preferably, it is at most 75 wt%, particularly preferably at most 70 wt%. Moreover, it is preferable that 10 to 70 weight% of solvent spinning cellulose type fiber is contained, More preferably, it is 10 to 60 weight%. The lower limit of the content of the solvent-spun cellulose fiber is more preferably 20% by weight or more, still more preferably 25% by weight or more, particularly preferably 30% by weight or more, and the upper limit of the content of the solvent-spun cellulose fiber The value is more preferably at most 50% by weight, particularly preferably at most 40% by weight.

  When the content of the antibacterial EVOH-containing fiber is less than 30% by weight, the unique squeakiness of the cellulose-based fiber becomes strong particularly when wet, and the smoothness of the obtained antibacterial non-woven sheet is reduced. In addition, when the content of the antimicrobial EVOH-containing fiber is less than 30% by weight, the ratio of incorporating the flowable composition into the fiber is increased, and the effective use to the skin is hindered. On the other hand, when the content of the antimicrobial EVOH-containing fiber exceeds 90% by weight, the impregnating power, in particular, the impregnation speed decreases, and the flowable composition retention ability decreases, and the flowable composition is unnecessarily released from the inside of the sheet It is not preferable because it will be washed away and be wasted.

  Unlike the conventional viscose rayon, copper ammonia rayon, etc., the solvent-spun cellulose fiber used in the present invention is different from a so-called regenerated cellulose fiber in which cellulose is once chemically converted to a cellulose derivative and then returned to cellulose again. Also, it means fibers (purified cellulose fibers) in which cellulose is precipitated from a solution obtained by simply dissolving cellulose in a solvent without chemically changing the cellulose.

  As a preferable example of the solvent-spun cellulose-based fiber used in the present invention, it is manufactured by a method of further stretching the fiber obtained by dry-wet spinning a stock solution of cellulose dissolved in amine oxide in water to precipitate cellulose. A cellulose fiber is mentioned. A typical example of such a fiber is Lyocell, which is sold under the trade name "Tensel" (registered trademark) by Lenzing, Austria. Such a fiber is very preferable because it has a round or elliptical cross-sectional shape, unlike the regenerated cellulose-based fiber that is generally used, and it has a low risk of damaging the skin when it is used by another person. Furthermore, since the viscose rayon fiber has a decrease in fiber strength under wet conditions, the sheet obtained by mixing the fibers is deformed in a wet state impregnated with a fluid composition containing a drug solution etc. Sex is reduced. Moreover, for example, when it is used as a liquid-containing sheet (described later) formed by integrating a fiber and a flowable composition containing a cosmetic, the wearing property is inferior. On the other hand, the antibacterial non-woven sheet of the present invention is very preferable because it hardly causes a decrease in strength even under wet conditions, and therefore, the form change does not occur and the wearability is excellent.

  Usually, the solvent-spun cellulose-based fiber is often beaten by a beater, refiner, high-speed disintegrator or the like to fibrillate the fiber, but in the present invention, fine fiber adheres to the face by fibrillation of the fiber. It is desirable to use substantially non-fibrillated solvent-spun cellulosic fibers to prevent this.

  The single fiber fineness of the solvent-spun cellulose-based fiber is not particularly limited, but in particular, when it comes in contact with the skin, the softness is often preferred, so 1 to 3 dtex is preferable. Preferably it is 1 to 2 dtex, more preferably 1.3 to 1.7 dtex. When the single fiber fineness exceeds 3 dtex, the touch on the skin may be deteriorated, or the liquid absorption and further liquid retention of the flowable composition containing the cosmetic may be deteriorated. On the other hand, if it is less than 1 dtex, the density of the non-woven fabric is increased and the inter-fiber voids are reduced, which is not preferable because the amount of impregnation of the flowable composition is reduced.

  Furthermore, the polarity of the entire antibacterial non-woven sheet can be adjusted by the mixing ratio of the antibacterial EVOH-containing fiber and the solvent-spun cellulose-based fiber, and the resin polarity of the antibacterial ethylene-vinyl alcohol copolymer, and the flowable composition Although it is possible to determine the amount of impregnation of the material and the touch, by adjusting the thickness of each fiber, it is possible to adjust the touch without affecting the amount of impregnation of the flowable composition. That is, when the solvent-spun cellulose-based fiber is thickened, the number of the cellulose-based fiber decreases and the surface area decreases with the same fabric weight, and the hydrophilicity of the resulting antibacterial non-woven sheet decreases. Conversely, when the cellulose-based fibers are thinned, the hydrophilicity of the antibacterial non-woven sheet is increased. In addition, with regard to the touch, it is also roughened by thickening the cellulose fiber.

  For example, when the mixing ratio of the antibacterial EVOH-containing fiber to the solvent-spun cellulose-based fiber is 60:40, and the ethylene component of the antibacterial ethylene-vinyl alcohol copolymer is 50 mol%, and the saponification degree is 98% In a liquid-containing sheet (in particular, a face mask) (described later) in which an antibacterial non-woven sheet and a flowable composition containing a cosmetic material are integrated to coat and use an antibacterial EVOH containing solvent-spun cellulose fiber The fiber thickness ratio is preferably in the range of 0.3 to 3.0, and more preferably in the range of 0.3 to 2.0.

  The fiber length of the antimicrobial EVOH-containing fiber and the solvent-spun cellulose fiber is preferably in the range of 5 to 60 mm. When the fiber length of the antibacterial EVOH-containing fiber and the solvent-spun cellulose fiber is too long, it is difficult to uniformly intermingle the fibers, and when the entanglement of both the fibers is insufficient, the uniformity of the antibacterial non-woven sheet is insufficient. As a result, not only the feel of the skin is deteriorated but also the efficiency of absorption and release of the fluid composition is lowered, which is not preferable. In addition, if the fiber length of the antibacterial EVOH-containing fiber and the solvent-spun cellulose-based fiber is too short, not only the release of the fiber from the antibacterial non-woven sheet is likely to occur, but the flexibility and the stretchability are reduced. From such viewpoints, the fiber length of the antimicrobial EVOH-containing fiber and the solvent-spun cellulose-based fiber used in the present invention is preferably 5 to 60 mm, more preferably 10 to 50 mm. In addition, the ratio of the fiber length of the solvent-spun cellulose-based fiber to the antibacterial EVOH-containing fiber is preferably 0.5 to 2, and more preferably 0.8 to 1.5.

  In the present invention, the antibacterial EVOH-containing fiber and the solvent-spun cellulose-based fiber can be uniformly blended and then formed into a web, and can be entangled by hydroentanglement to form an objective antibacterial non-woven sheet, but regarding web formation It is possible to form using a direct method such as a spun bond method or a melt blow method, a dry method such as a card method using staple fibers, an air laid method, or a wet method. Among them, the dry method is most preferable as the method for producing the antibacterial non-woven sheet of the present invention, from the viewpoint that mixing of fibers and a space for impregnating the flowable composition can be more easily performed. As the staple fiber web in this case, a random web, a semi-random web, a parallel web, a cross lap web, etc. are preferably used. In forming the web, it is preferable that the antibacterial EVOH-containing fiber and the solvent-spun cellulose-based fiber are mixed at the above-mentioned mixing ratio.

  In the antibacterial nonwoven fabric sheet of the present invention, the surface preferably has irregularities, and as described above, the obtained web is subjected to a hydroentanglement treatment to entangle constituent fibers with each other and to form irregularities on the surface. It can be done. The unevenness is formed on the surface of the antibacterial non-woven sheet by carrying out production under predetermined conditions at the time of hydroentanglement. This makes it possible to retain the flowable composition not only in the voids in the non-woven fabric but also in the recesses on the surface of the non-woven antimicrobial sheet. It will be possible to hold the fee. Further, at this time, the entire fiber absorbs water from the water flow, and a part of the solvent-spun cellulosic fiber which is easily moved by the force of the water flow extends in the water flow direction, that is, in the height direction of the convex portion. Particularly, when the antibacterial EVOH-containing fiber is a sheath-core type composite fiber with a hydrophobic resin, most fibers hardly move in the height direction of the convex portion because of the hydrophobicity and rigidity of the core portion. It becomes a form extending in the nonwoven fabric surface direction. Since these fibers are basically in the state of being mixed with each other, the antibacterial nonwoven sheet of the present invention is compatible with hydrophilicity and lipophilicity, and the hydrophilic and oleophilic flowable composition in the uneven shape is obtained. Both can hold. Moreover, the fluid composition held here does not penetrate into the structure of the non-woven fabric, and hence the liquid-containing sheet in which the antimicrobial non-woven sheet of the present invention and the fluid composition containing the cosmetic are integrated The presence of the cosmetic on the surface of the antibacterial non-woven sheet makes it very easy to move to the skin, and exhibits extremely good transferability to the skin. In addition, even when the cosmetic is on the unevenness of the surface of the antibacterial non-woven sheet, since the fiber itself has both hydrophilic and lipophilic properties, the phenomenon of the cosmetic does not run off does not occur.

  The unevenness mentioned above is preferably continuous in a fixed direction with a pitch difference of 0.04 to 0.5 mm while the height difference between the concave and the convex portion is in the range of 0.1 to 0.4 mm. If the height difference is less than 0.1 mm, the surface of the non-woven fabric becomes too smooth and the flowable composition can not be held utilizing the surface irregularities, which is not preferable because the impregnation property is lowered. Furthermore, since the entire surface comes into contact with the skin, a sense of stuffiness and stickiness occur when wearing, which is not preferable. When the height difference exceeds 0.4 mm, the portion holding the flowable composition is large, so the liquid holding amount is improved, but the ratio of the solvent-spun cellulose fiber tends to be high near the tip of the convex portion, Since the liquid absorption behavior in this portion depends on the properties of the solvent-spun cellulose-based fiber, while the liquid retention amount is improved, the possibility that the liquid discharging property is reduced is increased. Furthermore, the smoothness of the surface is inhibited, the touch is reduced, and the wearing feeling is reduced, which is not preferable. If the pitch is less than 0.04 mm, the recesses become too narrow, and the flowable composition containing the cosmetic can not enter and it is difficult to effectively use the surface irregularities to hold the flowable composition, which is not preferable. Further, if the pitch exceeds 0.5 mm, the distance between fibers of the portion constituting the convex portion is too wide, and it is difficult to hold the flowable composition which has entered the concave portion, which is not preferable.

  The irregularities on the surface of the non-woven fabric described above can be treated in advance on a sheet in which the web is intertwined with each other by hydroentanglement. The hydroentanglement to be treated in advance means a nozzle in which the nozzles are arranged in 1 to 3 rows with a nozzle diameter of 0.08 to 0.2 mm and a pitch of 0.4 to 1 mm on a porous metal plate or a support having a woven structure. Preferred is a method of treating the plate one or more times with a water flow at a water pressure of 1 to 6 MPa, more preferably 2 to 4 MPa.

  The irregularities on the surface of the non-woven fabric described above are preferably formed by water flow treatment on the fiber woven structure in at least the final treatment of the hydroentanglement treatment. As a support of a woven structure, a warp and a weft each preferably have a wire diameter of 0.01 to 1 mm, more preferably a monofilament of 0.02 to 0.5 mm, and the thickness of the woven structure is 0.1 to 1 mm. It is preferred to use one. If the diameter of the monofilament exceeds 1 mm, the fibers move to the periphery at the location where the warp is present on the weft, and the surface of the non-woven fabric is unfavorably opened, resulting in poor surface smoothness. Furthermore, from the nozzle provided with an orifice with a hole diameter of 0.05 to 0.3 mm, more preferably 0.08 to 0.2 mm, from above the woven structure at a distance of 0.4 to 1 mm, the water pressure is 6 to 15 MPa, more preferably A columnar water stream of 8 to 10 MPa may be injected onto the partially entangled web in the previous stage.

  By such hydroentanglement treatment, an antibacterial non-woven sheet having on its surface irregularities suitable for holding the flowable composition can be obtained.

  The antimicrobial nonwoven fabric sheet of the present invention is suitably used by being integrated with water to form a water-containing sheet or integrated with a flowable composition containing a cosmetic to form a liquid-containing sheet, as described later. be able to. When the antimicrobial nonwoven fabric sheet of the present invention is used as a liquid-containing sheet, the copolymerization composition of the ethylene-vinyl alcohol copolymer used in the present invention is adjusted according to the polarity of the flowable composition containing the cosmetic. The impregnatability of the flowable composition can be enhanced.

  That is, it is preferable to use a copolymer having a high ethylene composition when using the above-mentioned flowable composition, and to use a copolymer having a low ethylene composition when using the above-mentioned flowable composition having hydrophilicity. . Similarly, the hydrophilicity can be adjusted by the degree of saponification. Furthermore, not only the degree of saponification but also the affinity to various fluids can be adjusted by the type of unsaponified ester and the functional group modification of the hydroxyl group.

  The impregnation can also be enhanced by adjusting the proportion of the solvent-spun cellulose-based fiber. That is, when using a lipophilic flowable composition, it is preferable to lower the ratio of solvent-spun cellulose-based fibers, and when using a hydrophilic flowable composition, it is preferable to increase the ratio of solvent-spun cellulose-based fibers .

  The actual impregnating ability varies depending on the viscosity of the flowable composition, etc., but in consideration of the balance with the touch, the liquid retention, etc., the copolymer composition of the ethylene-vinyl alcohol copolymer, and / or the solvent spinning It can be adjusted by the proportion of cellulosic fibers.

  The antibacterial EVOH-containing fiber and the solvent-spun cellulose-based fiber having such properties are uniformly mixed and made into a single layer, and the porosity is 80 to 95% so as to have a predetermined interfiber space. By forming a hydroentangled non-woven fabric, it is possible to create a web which is lightweight, has a high degree of balance of hydrophilicity and lipophilicity as a total, and easily absorbs and releases both an oil component and an aqueous component to the same extent. Is possible.

  The softness, in particular the softness in the wet state, of the antimicrobial nonwoven sheet of the present invention makes it possible to conform to a surface having a complicated shape, but this is at the time of the wet 50% elongation of the nonwoven in at least one direction. It correlates with stress, and it is preferable that this value is 500 g / 50 mm or less. More preferably, it is 400 g / 50 mm or less, still more preferably 300 g / 50 mm or less. If this value exceeds 500 g / 50 mm, it becomes difficult for the substrate to follow the unevenness of the face, which makes it difficult to replenish the cosmetic with the whole face, which is not preferable. On the other hand, for example, when the stress at the time of 50% wet expansion is less than 100 g / 50 mm in a non-woven sheet or the like in a state in which the entanglement is not performed or in a state in which the entanglement is insufficient, It is unsuitable for the antibacterial nonwoven fabric sheet of the present invention because problems such as defects and poor handleability may occur.

Basis weight suitable for the antibacterial nonwoven fabric sheet of the present invention, the range and adhesion to the skin 30 to 100 g / m ^2, preferably from the viewpoint of the absorbent, in particular in the range of 40~70g / m ² is preferred. When the weight per unit area is less than 30 g / m ² , the absolute fiber amount is small, and the amount of the fluid composition which can be absorbed and held between the fibers is extremely small, which is not preferable. Moreover, when it exceeds 100 g / m ² , the fiber amount is too large and the thickness of the antibacterial non-woven fabric sheet is too thick, so the running property is unfavorably reduced.

The apparent density of the antibacterial nonwoven fabric sheet of the present invention is not particularly limited, but is preferably 0.03 to 0.20 g / cm ³ , more preferably 0.05 to 0.17 g / cm ³ , further preferably the 0.06~0.15g / cm ^3, particularly preferably 0.08~0.12g / cm ^3. If the apparent density is too low, the liquid-holding capacity of the non-woven antimicrobial sheet will be low and it will be prone to dripping during handling. On the other hand, when the apparent density of the antibacterial nonwoven fabric sheet is too high, the amount of liquid retention decreases.

  The thickness of the antibacterial nonwoven sheet of the present invention is not particularly limited, but is preferably 100 to 3000 μm, more preferably 200 to 2000 μm, still more preferably 300 to 1500 μm, still more preferably 400 to 1200 μm, particularly Preferably it is 500-1000 micrometers.

  Moreover, it is necessary for the antibacterial nonwoven fabric sheet of the present invention to simultaneously secure the liquid absorption property as well as the liquid discharge property. That is, when the antibacterial nonwoven fabric sheet of the present invention uses fibers having both hydrophilicity and lipophilicity as constituent fibers, liquids having both properties are held by being absorbed and adsorbed. Among them, it is considered that the lipophilic component is mainly retained by the antibacterial EVOH-containing fiber portion, and the hydrophilic component is partially retained by the antibacterial EVOH-containing fiber and the majority is retained by the solvent-spun cellulose-based fiber it can. These liquids are held on the fiber surface and can not be held directly on the fiber surface because they become more than this amount, the same kind of fibers (antibacterial EVOH-containing fibers or solvent-spun cellulose fibers) By filling and holding in the fiber void formed by being enclosed, it becomes possible to secure a liquid amount equal to or more than the adsorption amount of the nonwoven fabric constituent fiber. Therefore, for the sake of convenience, the porosity is used to clarify the existence of the void in which the liquid described herein is filled and held. The antibacterial nonwoven fabric sheet of the present invention preferably has a porosity of 80 to 95%. More preferably, it is 85 to 93%. If this porosity exceeds 95%, the distance between fibers is too large, and the flowable composition can not be held by the hydrophilic portion of the fibers, which is not preferable. On the other hand, if the amount is less than 80%, the distance between fibers is too narrow, the flowable composition can not enter into the non-woven fabric, and the amount of liquid absorption decreases, which is not preferable.

Liquid-containing sheet, face mask
The present invention has excellent antiseptic and antibacterial properties even without containing parabens, is soft and has a good touch, and is pressed with a finger while impregnated with a fluid composition containing a cosmetic such as a cosmetic fluid. Also provided is a liquid containing sheet and face mask for quick return of the flowable composition. That is, the present inventors are capable of absorbing the flowable composition by intermingling the antibacterial EVOH-containing fiber containing the specific antibacterial ethylene-vinyl alcohol copolymer as one component together with the solvent-spun cellulose fiber. In a liquid-containing sheet in which an antibacterial nonwoven sheet is formed and the antibacterial nonwoven sheet and the flowable composition are integrated, the flow including a cosmetic such as a cosmetic liquid by controlling reversion to compression in the thickness direction. It has also been found that the flowable composition can be quickly returned even when pressed with a finger while being impregnated with the sex composition.

  In the liquid-containing sheet of the present invention, the flowable composition may be water (in this case, referred to as "water-containing sheet") or may contain a cosmetic. When a flowable composition containing a cosmetic is used, it can be suitably used for a skin care sheet, and it is particularly preferable to use it for a face mask. That is, the antibacterial non-woven sheet of the present invention is used for absorbing and using a fluid composition, for example, a surface material such as a napkin or a diaper, a sheet for absorbing body fluid such as a diaper liner or a wet tissue (or skin washing Sheet, etc., but it is excellent in balance between liquid retention and releasability, and can be easily in close contact with the skin, so that the flowable composition of the present invention described above contains a cosmetic component, a pharmaceutically active component, etc. Applications that adhere the sheet (liquid-containing sheet) impregnated with the antibacterial non-woven sheet to the skin, for example, face mask, makeup removal sheet or cleansing sheet, body washing sheet (sweat wipe sheet, oil removal sheet, etc.), cooling sheet , It is preferable to use it for various skin care sheets such as medicated or therapeutic sheets (itch control sheets, compressibles etc) For even faster return of the flowable composition, particularly preferably used in a face mask.

  The liquid-containing sheet of the present invention may be a sheet impregnated with the flowable composition at the time of use, or may be a sheet previously impregnated with the flowable composition (so-called wet sheet) Good.

The flowable composition is not particularly limited in the application of impregnating the antibacterial nonwoven sheet of the present invention with the flowable composition. Examples thereof include water, aqueous solutions, aqueous flowable compositions such as aqueous emulsions, organic solvents and solutions containing these as media, and mixtures thereof. In addition, flowable compositions in which various solids, liquids, and gases that dissolve or disperse well are dissolved and / or dispersed in these flowable compositions are also suitably used. The flowable composition in which various active ingredients are dissolved and / or dispersed can provide an antibacterial non-woven sheet with excellent functionality. The flowable composition also includes a solution or dispersion (cosmetics, emulsion, cosmetic solution, etc.) containing an active ingredient such as a cosmetic ingredient or a medicinal (efficacy) ingredient. Among them, a hydrophilic flowable composition including an aqueous flowable composition and a flowable composition containing a polar organic solvent is advantageous from the viewpoint of impregnation and is also advantageous from the viewpoint of safety to the human body, etc. It is. Particularly, an aqueous flowable composition is most advantageous from the viewpoint of liquid retention. The polar organic solvent includes various organic solvents having a polar functional group, and the polar functional group includes a hydroxyl group, an aldehyde group, a carboxyl group, an alkoxycarbonyl group, an ether group, a carbonyl group, an amino group, a nitro group and a thiohydroxy group , Etc. As these hydrophilic fluid compositions, for example, water, lower aliphatic alcohols (eg, C _1-6 alkyl alcohol such as ethanol, isopropanol etc.), alkylene glycols (eg ethylene glycol, diethylene glycol, propylene glycol etc.) And the like. In addition, unsaturated higher fatty acids (eg, oleic acid, oleyl alcohol etc.), animal and vegetable oils (eg, jojoba oil, olive oil, coconut oil, camellia oil, macadamian nut oil, avocado oil, corn oil, sesame oil, wheat) Germ oil, linseed oil, castor oil, squalane, etc., mineral oil (eg, liquid paraffin, polybutene, silicone oil etc.), synthetic oil (eg, synthetic ester oil, synthetic polyether oil etc.) are also suitably used. .

  These flowable compositions can be used alone or in combination of two or more. For example, a liquid oil may be used as an additive (oil component) in combination with a hydrophilic solvent such as water or ethanol. Of these flowable compositions, generally, water, lower alcohols or mixtures thereof are used, preferably water and / or ethanol, more preferably only water. For example, when water and a lower alcohol (especially ethanol) are used in combination, the ratio of both is water / lower alcohol = 100/0 to 30/70, preferably 100/0 to 50/50, more preferably 100. / 0 to 70/30, particularly preferably 99/1 to 80/20.

  For the flowable composition, conventional additives such as moisturizers or emollients (e.g., dipropylene glycol, 1,3-butylene glycol, polyethylene glycol, polyoxyethylene-polyoxypropylene block copolymer, polyoxy acid) Ethylene sorbitan fatty acid ester, polyoxyethylene sucrose fatty acid ester, glycerin, sodium hyaluronate, polyoxymethyl glycoside, polyvinyl alcohol, polyvinyl pyrrolidone, water-soluble cellulose ether (methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl (Eg methylcellulose), UV inhibitors, surfactants, astringents, enzymes, refreshing agents, disinfectants or antibacterial agents, emollients (eg For example, salicylic acid or its derivative, lactic acid, urea etc., antioxidant (eg tocopherol or its derivative, polyphenols such as anthocyanin etc.), whitening agent (eg ascorbic acid or its derivative, cysteine, placenta extract, arbutin, Kojic acid, rucinol, ellagic acid, chamomile extract etc., antiperspirant (eg aluminum compound, zinc compound, astringent agent such as tannin etc.), skin roughening agent (eg glycyrrhizinate, vitamins etc), anti Inflammatory agents (eg, allantoin, guaiazulene, glycyrrhizinic acid or salts thereof, glycyrrhetinic acid or salts thereof, ε-aminocaproic acid, tranexamic acid, ibuprofen, indomethacin etc.), circulation promoting agents (eg peony, rosemary, clove etc.) ), Vitamins (eg, vitamin A, vitamin B, vitamin C, vitamin D, vitamin E, vitamin K, etc.), amino acids (eg, tryptophan, cysteine etc.), cell activators (eg, riboflavin, pyridoxine, nicotinic acid, Pantothenic acid, α-tocopherol or derivatives thereof, plant extracts such as Yukinoshita extract, perfumes (eg, synthetic perfumes, essential oils, essential oil components, etc.), etc. These additives may be used alone or in combination. It can be used in combination with species.

  Among these additives, for example, moisturizers, ultraviolet absorbers, surfactants, refreshing agents, enzymes, astringents, bactericides or antibacterial agents are widely used for skin care sheets. In particular, in the face mask (face pack), for example, a humectant, an emollient agent and the like may be blended in a hydrophilic solvent. The total proportion of the humectant and the emollient agent is, for example, 0.1 to 50% by weight, preferably 1 to 30% by weight, and more preferably 5 to 20% by weight in the solution.

  The proportion of these additives can be appropriately selected according to the application, for example, the proportion of water, ethanol, etc. is usually 30 to 99% by weight, preferably 40 to 95% by weight in the total flowable composition containing the additives. % By weight, more preferably 50 to 90% by weight.

  The impregnation amount of the flowable composition to be used is not particularly limited as long as a predetermined effect can be obtained, and may be appropriately selected according to the purpose of the user, for example, the flow including the water-containing sheet and the cosmetic provided by the present invention In the liquid-containing sheet in which the property composition and the antibacterial non-woven sheet are integrated, 200 to 1000% by weight based on the weight of the base material is preferable in terms of cost and performance.

  In the liquid-containing sheet of the present invention comprising the antibacterial non-woven sheet and the flowable composition containing the cosmetic, the antibacterial non-woven sheet has high liquid absorption performance capable of holding a sufficient amount of the cosmetic. Need to be In the present invention, this is expressed using a liquid absorption speed and a liquid retention rate.

  First, the antibacterial nonwoven fabric sheet suitable for the liquid-containing sheet of the present invention needs to have excellent liquid absorption performance, and a preferable liquid absorption speed is 5 seconds or less. More preferably, it is 3 seconds or less, still more preferably 2 seconds or less, and particularly preferably 1.5 seconds or less. When the liquid absorption speed exceeds 5 seconds, the flowable composition containing the cosmetic is difficult to be impregnated, particularly when the flowable composition containing the individual's cosmetic is impregnated and used in each home, the flowable composition Can flow down the surface, and as a result, the cosmetic is not impregnated into the antibacterial non-woven sheet, which is not preferable. As a flowable composition containing a cosmetic, an oil-based flowable composition generally has a high viscosity, an aqueous flowable composition tends to have a low viscosity, and a low viscosity tends to increase the liquid absorption speed. In the former, the preferable liquid absorption speed is 5 seconds or less, but in the latter 3 seconds or less.

  An antibacterial nonwoven fabric sheet suitable for a liquid-containing sheet using a flowable composition containing a cosmetic needs to be able to supply a sufficient amount of the cosmetic to the skin. For this reason, it is necessary that the liquid retention ratio, which is the ratio of the liquid retention amount to the nonwoven fabric basis weight, which is an indicator of the liquid retention amount of the flowable composition containing the cosmetic to the antibacterial non-woven sheet, be higher. The liquid rate is 900% or more, more preferably 1000% or more. In the case of an antimicrobial nonwoven sheet having a low liquid retention rate, in order to impregnate a fluid composition containing a target amount of a cosmetic, it is necessary to prepare various antimicrobial nonwoven sheets whose basis weight and composition are changed according to the amount of impregnation. Although it generate | occur | produces, in the antimicrobial nonwoven fabric sheet of this invention, it is possible to respond to various impregnation amount by one type.

  In addition, when the liquid-containing sheet of the present invention is applied to the face, the flowable composition containing the cosmetic flows along the face in the non-woven fabric, and finally drips from the jaws to prevent problems such as staining of clothes. It is also important. In the present invention, this performance is expressed by a liquid drip rate, and it is preferable that this value is 3.5% or less. More preferably, it is 3% or less, more preferably 2.5% or less.

  And it is extremely important that the flowable composition containing the cosmetic which is impregnated in a large amount in the antibacterial non-woven sheet and held so as not to drip by the method as described above is efficiently transferred to the skin . In the present invention, this is expressed as a release rate, and this value is desirably 95% or more. If the release rate is less than 95%, effective cosmetics are incorporated into fibers and can not be effectively used on the skin. It is preferable that the ratio in which the flowable composition containing the cosmetic which the antibacterial nonwoven fabric sheet holds and holds is released is 95% or more.

  In particular, the liquid-containing sheet of the present invention does not necessarily have a high basis weight by being balanced at a high level in the impregnation properties of the flowable composition containing the cosmetic, that is, the liquid absorption speed and the liquid holding amount, the liquid dripping rate and the release rate. It is possible to realize a liquid-containing sheet which is excellent in wet fit and which can supply sufficient cosmetic to the skin without securing it.

  The antimicrobial non-woven sheet of the present invention is generally used by impregnating a flowable composition, but may be used by impregnating these flowable compositions at the time of use, and may be impregnated with a flowable composition in advance. It is also good. In the case of the former, there is an advantage that the user can use a liquid-containing sheet containing, for example, a cosmetic, to select and impregnate a cosmetic of his / her choice. Also, the ability to supply in a dry state can simplify the packaging of the product.

  When used in the liquid-containing sheet described above, the antibacterial non-woven sheet is a cosmetic or medicinal (effect) component (for example, moisturizing component, cleansing component, antiperspirant component, aroma component, whitening component, blood circulation promoting component, cooling component, UV component Have wettability required for impregnating a flowable composition containing an absorption component, a skin itching suppression component, etc. and a space for holding a liquid, and without dripping in handling at the time of use, the predetermined amount of the body Preferably, it has a role of holding until it covers the site (for example, the face), sticking or leaving it, and moving the cosmetic little by little to the skin side. The antibacterial nonwoven sheet is excellent in liquid retention and has appropriate stiffness or elasticity, and when impregnated with the flowable composition, the reversion to compression and the return of the flowable composition are fast, particularly, as described above. When the antibacterial non-woven fabric sheet is formed of high elastic fibers having a specific Young's modulus, the flowability of the composition is excellent in restitution and the thickness is also recovered rapidly, so the liquid retention state similar to the non-compressed area Can recover in a short time.

Specifically, when the fluid composition is impregnated with 900% by weight of its own weight and removed by applying a load of 260 g / cm ² for 1 minute, the reversion to compression in the thickness direction is It is preferable that it is 35% or more (for example, 35 to 100%) in 5 minutes, more preferably 50 to 99% (for example, 60 to 95%), still more preferably 65 to 90% (particularly 70 to 85%) It is. If the repositioning is less than 35%, a flowable composition such as a cosmetic solution can not fully return to the pressing portion. The repositioning can be measured in detail by the method described in the examples described later.

  Specifically, with respect to the return of the flowable composition described above, when the flowable composition is impregnated with 900% by weight with respect to its own weight and a circular shape portion having a diameter of 1.2 cm is subjected to a load of 620 g for 1 minute and removed. , And 5% may be 45% or more, for example, 50 to 99%, preferably 60 to 98% (eg, 65 to 95%), more preferably 70 to 92% In particular, 80 to 90%). If the return rate is too low, the flowable composition will be insufficient after pressing, and with a face mask, the cosmetic solution can not sufficiently penetrate the skin. In addition, the said return rate can be measured by the method as described in the Example mentioned later in detail.

  When used in the liquid-containing sheet of the present invention, the antibacterial non-woven sheet is excellent in softness in the wet state and appropriately entangled so that it can follow the skin of the face and the like, and is wet according to JIS L 1913 The stress at 30% elongation (wet stress at 30% elongation) is preferably 0.5 to 10 N / 5 cm, more preferably 1 to 8 N / 5 cm, still more preferably 1.5 to 5 N / at least in one direction. It is 5 cm, particularly preferably 2 to 4 N / 5 cm. When the wet 30% elongation stress is too small, it stretches too much when worn on the skin such as the face and is difficult to handle, and when it is too large, the adhesion to the skin is reduced. In addition, the said stress at the time of 30% elongation can be measured by the method as described in the below-mentioned Example in detail.

  When the flowable composition contains water, the water-containing sheet of the present invention can be added with a function by containing, for example, at least one of the above-described flowable composition and the active ingredient in addition to water. These fluid compositions and active ingredients do not need to be water-soluble, but those having high affinity with water can enhance the homogeneity of the water-containing sheet and increase the fluid compositions and active ingredients that add functions. It is easy to impregnate the antimicrobial non-woven sheet in concentration. In addition, it is advantageous from the viewpoint of production efficiency as well as the homogeneity of the water-containing sheet to be integrated with the antibacterial non-woven sheet together with water in the state of an aqueous solution, dispersion or emulsion. In particular, aqueous solutions, aqueous dispersions, and aqueous emulsions have high affinity for the solvent-spun cellulose-based fibers of the antibacterial non-woven sheet of the present invention, and can be integrated at a high concentration by the antibacterial non-woven sheet to obtain high functions. It is even more advantageous in terms of homogeneity and production efficiency.

  The flowable composition containing the cosmetic used in the liquid-containing sheet of the present invention is, for example, in the state of solution, dispersion, emulsion or the like. Also, it contains, for example, water and at least one of the above-mentioned flowable compositions. The cosmetic includes at least one substance having a cosmetic function, including the case where the cosmetic itself has fluidity, and the cosmetic which is in the form of a solid or the like but having substantially no fluidity. When the cosmetic itself has fluidity, only the cosmetic may be integrated with the antibacterial non-woven sheet as a flowable composition, but usually the flowable composition is mixed with another liquid to enhance the flowability. Enhance the production efficiency when integrating the The liquid to be mixed with the cosmetic can be integrated at a high concentration by the antibacterial non-woven sheet because the affinity with the cosmetic is high, so a high function can be obtained, and the flowable composition containing the cosmetic and the antibacterial non-woven sheet It is further advantageous in terms of the uniformity and production efficiency of the integrated liquid-containing sheet. There is no restriction | limiting in particular as a function of the cosmetics to be used, One type or mixture of cosmetics which have a various functions generally known can be used.

  As described above, the present invention also provides a face mask using a liquid-containing sheet in which a flowable composition containing a cosmetic and an antibacterial non-woven sheet are integrated. The sheet produced by fusing the heat-adhesive component as described in Patent Document 1 described above improves the shrinkage when wet, but the entire sheet becomes hard and the runability to the skin decreases. Furthermore, since the sheet surface is mainly composed of hydrophilic fibers, the chemical solution impregnated in the fibers can be taken in, and it can not be sufficiently released to the object to be wiped off. In the case of the sheet | seat etc. which coat | cover, the problem that an active ingredient like a cosmetic fluid can not fully be released arises. Moreover, although the nonwoven fabric sheet disclosed by patent document 2 mentioned above is excellent in a softness | flexibility and liquid holding property, the stiffness (stiffness) of a sheet | seat is small, and in order to closely_contact a face mask with a face, thickness is pushed Recovery and cosmetic solution (cosmetics) return slowly. Therefore, it is difficult to efficiently spread the cosmetic solution over the entire face. In particular, in the face mask, although it is necessary to hold the part where it is desired to replenish the cosmetic solution or the part where adhesion is difficult to adhere with a finger, in the conventional face mask, the face mask adheres at the target part. Supply of beauty essence was insufficient. In addition, in order to improve the alignment of the face mask to the skin (face), a face mask with a layer of ultrafine fibers provided on the skin contact side, a face mask with a three-dimensional structure, etc. were also developed. ing. However, even with these face masks, the running property with respect to the skin is not sufficient, and at present, the action of pressing the face mask once attached with a finger to adhere is repeated. Therefore, by repeating the action of pressing on the skin, the cosmetic solution stored in the pressed portion is pushed out each time, which results in promoting an insufficient state of the cosmetic solution.

  The present invention also provides a face mask in which such conventional problems are solved. That is, as described above, the antibacterial non-woven fabric sheet of the present invention forms a non-woven fabric capable of absorbing the flowable composition by using a specific antibacterial fiber and a solvent-spun cellulose-based fiber, and the thickness of the antibacterial non-woven fabric sheet Since the restitution to the compression of the direction is controlled, the antibacterial composition is excellent, and the return of the flowable composition is fast even if the finger is impregnated with a liquid component such as a cosmetic fluid. Moreover, even if it presses with a finger in the state which impregnated the fluid composition, thickness recovery is also quick. Therefore, for example, when it is used as a face mask, cosmetic solution can be efficiently supplied to a desired site. Furthermore, flexibility, liquid retention, and form stability can be improved by using a sheath-core type composite fiber having a sheath part formed of an ethylene-vinyl alcohol copolymer.

  Moreover, since the antibacterial nonwoven fabric sheet of the present invention is excellent in adhesion to the skin, it is particularly suitable not only for a face mask but also as a liquid-containing sheet to be fixed to the skin such as a compress. For example, since the liquid-containing sheet of the present invention can easily correct the floating portion without close contact, it can also be in close contact with fine gaps such as the base of the nose, and the active ingredient of the liquid-containing sheet is effectively applied to the skin. It can penetrate.

  In addition, the liquid-containing sheet of the present invention is also suitable as a cleansing sheet, a sheet for skin cleansing, and the like. As described above, since the liquid-containing sheet of the present invention can closely adhere the sheet to minute gaps in the face, it is possible to effectively remove makeup (make-up cosmetics such as foundation, white powder, lipstick, eye makeup, etc.). As described above, when the liquid-containing sheet of the present invention is used as a liquid-impregnated biocoated sheet, the liquid-containing sheet is usually impregnated with the flowable composition and used by being attached to or in contact with the skin of a living body Therefore, it is important to be antimicrobial. In addition, the liquid-containing sheet of the present invention may be laminated with other layers, for example, even if a non-porous film or sheet is laminated on the side not in contact with the skin to promote absorption of the active ingredient. Good.

  Hereinafter, the present invention will be more specifically described by way of examples, but the present invention is not limited to these examples. In addition, each physical-property value in a present Example was measured by the following method.

Spinnability
In the spinning process in fiber production, when the spun yarn is cooled and solidified, it is taken to a bobbin via a take-up roller, and the case where the yarn can be taken without breakage is regarded as "a: good spinnability". The spinnability was evaluated as "b: poor spinnability" when it was broken and could not be taken up, and when yarn breakage occurred at the single yarn level and fuzz was generated.

[Fineness]
It evaluated according to JIS L 1015 "chemical fiber staple test method (8.5.1)."

[Strength]
It evaluated according to JIS L 1015 "chemical fiber staple test method (8.7.1)."

Elongation
It evaluated according to JIS L 1015 "chemical fiber staple test method (8.7.1)."

[Young's modulus]
Examples 7 to 11 and Comparative Examples 9 to 17 were evaluated according to JIS L 1015 "Chemical fiber staple test method (8.11)".

[Antibacterial]
150 g of the antibacterial non-woven fabric sheet obtained in the example or the comparative example was put into a bucket containing 20 liters of water at a temperature of 60 ° C., and after scouring treatment for 30 minutes, it was rinsed for 30 minutes, dried and dried. The antibacterial property of the scoured non-woven sheet was tested in accordance with JIS L 1902 "Testing method of antibacterial property and antibacterial effect of fiber products". In addition, Staphylococcus aureus and Klebsiella pneumoniae were used as test bacteria (fungus liquid concentration 1/20 NB, drop volume of bacteria drop 0.2 ml), cotton cloth was used as the unprocessed sample, and the bactericidal activity value was calculated according to the following equation. . In addition, when a bactericidal activity value is 0 or more, it is recognized that there is a bactericidal effect.

Bacteriostatic activity value: value representing the difference between the number of viable bacteria before and after the action time in logarithm
A = The number of bacteria dispersed and collected immediately after inoculation of the unprocessed sample B = The number of bacteria dispersed and collected after 18 hours of culture of the processed sample [Thickness]
The thickness of the antibacterial nonwoven fabric sheet obtained in the example or the comparative example was measured according to JIS L 1096 "Dough test method for woven and knitted fabric (8.5)". The thickness gauge was measured using a digitadic indicator manufactured by Mitutoyo Corporation with a 1-inch gauge (diameter) and a load of 12 g / cm ² .

[Weight per unit]
The basis weight of the antibacterial non-woven fabric sheet obtained in Examples or Comparative Examples was measured in accordance with JIS P 8124 "Method of measuring basis weight of paper and paperboard".

[Void ratio]
The porosity (%) of the antibacterial non-woven fabric sheet obtained in the example or the comparative example is calculated by the following formula based on the non-woven basis weight (g / m ² ), the fiber specific gravity (g / cm ³ ) and the non-woven thickness (cm) Calculated by.

Porosity (%) = 100-{(non-woven basis weight / fiber ratio / non-woven layer thickness) / 100}
[touch]
The touch when touching the antibacterial non-woven fabric sheet obtained in the example or the comparative example was organoleptically evaluated by five subjects according to the following criteria.
<Evaluation criteria>
X: Good feel Y: Not good feel Z: Not good feel [wicking speed]
The liquid absorption speed of the antibacterial nonwoven fabric sheet obtained in the example or the comparative example was measured according to JIS L 1907 "Test method of water absorption of fiber product (7.1.1 (dropping method))". Holding the periphery, 1 drop of liquid was dropped by buret from 1 cm above the non-woven fabric in a floating state, and the time until no special light reflection of the surface droplet was measured was measured. The following tests I and II were carried out according to the liquid to be dropped.

Test I: Ion-exchanged water Test II: Nisshin Oillio Group, Inc. prepared edible oil [Retention of liquid]
The liquid retention rate of the antibacterial nonwoven fabric sheet obtained in the example or the comparative example was measured in accordance with JIS L 1907 “Test method of water absorption of fiber product (7.2 (water absorption method))”. A test piece is cut out to 5 cm square, and the weight C (g) is measured. The test piece was immersed for 30 seconds in a flowable composition (a sun roller lotion made by Asan Co., Ltd.) containing a cosmetic. After that, one side of the test piece was held and taken out of the solution, and a weight D (g) after 10 seconds and a weight E (g) after 1 minute were measured.

The liquid retention rate F (%) is calculated by the following equation.
Liquid retention rate F (%) = {(EC) / C} x 100
[Emission rate]
The release rates of the antibacterial non-woven sheets of Examples 1 to 6 and Comparative Examples 1 to 8 were measured as follows. The sample for which the liquid retention rate was measured was cut into 10 cm square pieces, sandwiched between filter papers (corrected filter paper No. 2) cut to about 2.5 g, placed a 2 kg weight from the top, and allowed to stand for 1 minute. After one minute, the sample is taken out and the increase in filter paper weight H (g) is measured.

The release rate G (%) of the flowable composition containing the cosmetic composition was calculated by the following equation.
G (%) = {H / (E-C)} × 100
[Reposition]
The original repeat positions of the antibacterial nonwoven fabric sheets of Examples 7 to 11 and Comparative Examples 9 to 17 were measured as follows. Prepare a sample cut in the MD direction 5 cm × CD direction 5 cm, impregnate 900% cosmetic solution (Kanebo Cosmetics Co., Ltd. “Freschel Essence Lotion NA”) with respect to the sample weight, and as shown in FIG. The sample 3 was spread on an acrylic plate (measuring table) 4 and allowed to stand, and the initial thickness was measured by the laser displacement meter 1. Next, a load 2 of 260 g / cm ² was placed on the center of the raw fabric (non-woven fabric) for 60 seconds, and the displacement from immediately after removing the load to 300 seconds after was measured. Assuming that the thickness of the raw fabric before measurement is I, the thickness immediately after removing the load is J, and the thickness after 300 seconds is K after removing the load, the original repetitive position (%) was determined according to the following equation.

Original repeat position (%) = [(I−K) / (I−J)] × 100
[Liquid return]
The liquid return to the raw fabric of the antibacterial nonwoven fabric sheet of Examples 7-11 and Comparative Examples 9-17 was measured as follows. Prepare a sample cut in the MD direction 5 cm × CD direction 5 cm, impregnate 900% beauty fluid (Kanebo Cosmetics Co., Ltd. “Freschel Essence Lotion NA”) with respect to the sample weight, and as shown in FIG. , Spread sample 3 on acrylic plate (measuring table) 14 and let stand, place 620 g of load 12 for 60 seconds in the central part of circular shape with a diameter of 1.2 cm and immediately remove the load The width of the part without was measured. Furthermore, after removing the load, the width of the portion without cosmetic solution after 300 seconds was measured. Assuming that the width of the portion without cosmetic fluid immediately after removing the load is L, and the width of the portion without cosmetic fluid after 300 seconds after removing the load is M, the liquid return (%) to the original fabric according to the following formula I asked.

Liquid return to raw fabric (%) = [(L-M) / L] × 100
[Revenness difference]
The height difference between the concave and the convex on the surface of the antibacterial non-woven fabric sheet obtained in the example or the comparative example corresponds to the height difference between the concave and the convex when the cross section of the non-woven fabric is observed using a microscope VH-6300 manufactured by Keyence Corporation. The difference was calculated by measuring and averaging three points.

[Wet stress at 50% elongation]
The stress at 50% wet elongation of the antibacterial non-woven sheets of Examples 1 to 6 and Comparative Examples 1 to 8 is obtained by using Shimadzu autograph AGS-50D, sample width 50 mm, measurement length 100 mm, measurement speed 200 mm / When a tensile test is performed at min, it is indicated by the strength value when the elongation reaches 50%.

[Wet stress at 30% elongation]
The wet 30% elongation stress of each of the antibacterial non-woven sheets of Examples 7 to 11 and Comparative Examples 9 to 17 is measured according to JIS L 1913 “General non-woven fabric test method (6.3.2 (Tensile strength at wet and elongation percentage test) It measured based on the method as described in ").". Specifically, the sample was placed in water at 20 ° C. ± 2 ° C. until it settled by its own weight, or after it was submerged in water for 1 hour or more, it was removed from the immersion liquid and the stress at 30% elongation was measured immediately. .

(Reference example 1: single fiber)
(1) Silver-based inorganic antimicrobial particles ("AV10D" manufactured by Sinanen Zeomic Co., Ltd.), in which silver ions are supported on an inorganic ion exchanger in 99 parts by weight of an ethylene-vinyl alcohol copolymer having an ethylene content of 44 mol% One part by weight of a particle diameter of 2.5 μm and a substantially cubic shape was compounded and spun at a spinning temperature of 240 ° C. in a melt extruder. After the spun yarn was cooled and solidified, it was taken up on a bobbin via a take-up roller.

  (2) Next, this twill yarn is thermally drawn at a drawing temperature of 80 ° C. at a draw ratio of 2 times, and after an oil agent is applied in an oil agent bath, a crimper such as a stuffer-type crimp applicator is used I performed a crimp process. Subsequently to the crimp application treatment, the fiber was dried with hot air at 100 ° C., and cut to 51 mm to obtain an antimicrobial EVOH-containing fiber (1.7 dtex, 51 mm length, circular cross section). Both spinnability and stretchability were good, strength was 2.4 cN / dtex and elongation was 33%. The evaluated results are shown in Table 1.

(Reference example 2: Composite fiber)
(1) Silver-based inorganic antimicrobial particles ("AV10D" manufactured by Sinanen Zeomic Co., Ltd.), in which silver ions are supported on an inorganic ion exchanger in 99 parts by weight of an ethylene-vinyl alcohol copolymer having an ethylene content of 44 mol% Using a composite spinning apparatus comprising, as a sheath, a copolymer compounded with 1 part by weight of a particle diameter of 2.5 μm and a substantially cubic shape) and a thermoplastic polymer consisting of polyethylene terephthalate as a core, a melt extruder In a round cross-section die, it was bonded to a sheath-core type at a spinning temperature of 280 ° C. and a sheath-core weight ratio of 50:50 and spun. After cooling and solidifying the spun yarn, it was wound onto a bobbin via a take-up roller.

  (2) Next, this twill yarn is thermally drawn at a drawing temperature of 80 ° C. at a draw ratio of 2 times, and after an oil agent is applied in an oil agent bath, a crimper such as a stuffer-type crimp applicator is used I performed a crimp process. Subsequently to the crimp application treatment, the fiber was dried with hot air at 100 ° C. and cut to 51 mm to obtain an antimicrobial EVOH-containing fiber (3.4 dtex, 51 mm length, sheath core weight ratio 50: 50, circular cross section , Core diameter 12.5 μm). Both spinnability and stretchability were good, strength was 2.9 cN / dtex, and elongation was 27%.

(Reference example 3: composite fiber)
(1) The twill yarn of Reference Example 2 is thermally drawn at a drawing temperature of 80 ° C. at a draw ratio of 2 times, applied with an oil agent in an oil agent bath, and cut into 10 mm to have the antibacterial properties shown in Table 1 below. An EVOH-containing fiber was obtained (3.4 dtex, 10 mm length, sheath-core weight ratio 50: 50, circular cross section, core diameter 12.5 μm). Both spinnability and stretchability were good, strength was 2.9 cN / dtex, and elongation was 27%.

(Reference example 4: single fiber)
Silver-based inorganic antibacterial particles ("AV10D" manufactured by Sinanen Zeomic, average particle diameter 2) in which silver ions are supported on an inorganic ion exchanger in 99 parts by weight of an ethylene-vinyl alcohol copolymer having an ethylene content of 85 mol%. 1 part by weight of approximately 5 μm, substantially cube shape was blended, and spun as in Reference Example 1 to obtain an antimicrobial EVOH-containing fiber (1.7 dtex, 51 mm in length, circular cross section). Both the spinnability and the stretchability were good, the strength was 3.1 cN / dtex and the elongation was 38%.

(Reference Example 5: Composite Fiber)
An antibacterial EVOH-containing fiber was obtained in the same manner as in Reference Example 2 except that the discharge amount of the resin, the take-up speed, and the draw ratio were adjusted so that the fineness was 5.5 dtex. Sheath core weight ratio 50: 50, circular cross section, core diameter 16.0 μm). Both spinnability and stretchability were good, strength was 2.9 cN / dtex, and elongation was 36%.

(Reference Example 6: Composite Fiber)
(1) A round cross section using a composite spinning apparatus comprising a melt extruder and a thermoplastic polymer consisting of polyethylene terephthalate as a core, with an ethylene-vinyl alcohol copolymer having an ethylene content of 44 mol% as a sheath At a spinneret, a sheath-core type was bonded and spun at a spinning temperature of 280 ° C. and a sheath-core weight ratio of 50:50. After cooling and solidifying the spun yarn, it was wound onto a bobbin via a take-up roller.

  (2) Next, this twill yarn is thermally drawn at a drawing temperature of 80 ° C. at a draw ratio of 2 times, and after an oil agent is applied in an oil agent bath, a crimper such as a stuffer-type crimp applicator is used I performed a crimp process. Subsequently to the crimp application treatment, the fiber was dried with hot air at 100 ° C. and cut to 51 mm to obtain an EVOH-containing fiber (3.4 dtex, 51 mm length, sheath core weight ratio 50: 50, circular cross section, core Part diameter 12.5 μm). Both spinnability and stretchability were good, strength was 3.6 cN / dtex, and elongation was 38%.

Example 1
A card web of about 60 g / m ^{2 in} basis weight was prepared by blending 70% by weight of the antibacterial EVOH-containing fiber of Reference Example 1 and 30% by weight of solvent-spun cellulose-based fiber (Lyocell manufactured by Lenzing Co., 1.7 dtex, 38 mm length) .

Then, a water stream was jetted to the card web and subjected to entanglement to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 92%. The results of each evaluation are shown in Table 1.

This sheet had sufficient liquid retention and release and had a good touch.
Example 2
A card web of about 60 g / m ^{2 in} basis weight was prepared by blending 70% by weight of the antibacterial EVOH-containing fiber of Reference Example 2 and 30% by weight of solvent-spun cellulose-based fiber (Lyocell, 1.7 dtex, 38 mm length) .

Then, a water stream was jetted to the card web and subjected to entanglement to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 95%. The results of each evaluation are shown in Table 1. This sheet had sufficient liquid retention and release and had a good touch.

[Example 3]
70% by weight of the antibacterial EVOH-containing fiber of Reference Example 3 and 30% by weight of solvent-spun cellulose-based fiber (Lyocell, 1.7 dtex, 12 mm length) manufactured by Lenting Co., dispersed in water, and wetted to about 60 g A wet nonwoven fabric of 1 / m ² was produced.

Subsequently, a water stream was jetted to the wet nonwoven fabric and subjected to entanglement treatment to obtain a hydroentangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial nonwoven fabric sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 90%. The results of each evaluation are shown in Table 1. This sheet had sufficient liquid retention and release and had a good touch.

Example 4
A card web having a basis weight of about 60 g / m ² was prepared by blending 70% by weight of the antibacterial EVOH-containing fiber of Reference Example 5 and 30% by weight of solvent-spun cellulose fiber (Lyocell, 1.7 dtex, 38 mm length) .

Then, a water stream was jetted to the card web and subjected to entanglement to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 97%. The results of each evaluation are shown in Table 1. This sheet had sufficient liquid retention and release and had a good touch.

[Example 5]
The card web obtained in Example 2 was sprayed with a water stream and subjected to entanglement to obtain a water-entangled non-woven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.15 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 8 MPa was injected on two sides of each side to cause entanglement. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 99%. The results of each evaluation are shown in Table 1. While this sheet had sufficient liquid retention and release properties, the touch was slightly inferior.

[Example 6]
Same as Example 1 except that 10% by weight of the antibacterial EVOH-containing fiber obtained in Reference Example 2 and 90% by weight of solvent-spun cellulose-based fiber were mixed and a card web with a basis weight of 60 g / m ² was prepared. An antimicrobial non-woven sheet was obtained. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 88%. The results of each evaluation are shown in Table 1. This sheet had a good touch, although it was slightly inferior in liquid retention and release properties.

Comparative Example 1
An attempt was made to make a yarn in the same manner as in Example 2 except that a silver based inorganic antibacterial fine particle (Sinanen Zeomic Co., Ltd., average particle diameter 0.008 μm, substantially cubic shape) having silver ions supported on an inorganic ion exchanger was blended. However, stable spinning could not be performed due to poor spinnability.

Comparative Example 2
A yarn was tried to be produced in the same manner as in Reference Example 2 except that a silver based inorganic type antimicrobial fine particle (Sinanen Zeomic Co., Ltd., average particle diameter 25 μm, substantially cubic shape) having silver ion supported on an inorganic ion exchanger was blended. The yarn could not be stably produced due to poor spinnability.

Comparative Example 3
Silver-based inorganic antibacterial particles (“AV10D” manufactured by Sinanen Zeomic, average particle diameter 2) in which silver ions are supported on an inorganic ion exchanger in 99 parts by weight of an ethylene-vinyl alcohol copolymer having an ethylene content of 8 mol%. Although 1 part by weight of .5 .mu.m (approximately cubic shape) was blended and it was tried to make a yarn in the same manner as in Reference Example 1, stable spinning could not be performed due to poor spinnability.

Comparative Example 4
A card web of about 60 g / m ^{2 in} basis weight was prepared by blending 70% by weight of the antibacterial EVOH-containing fiber of Reference Example 4 and 30% by weight of solvent-spun cellulose fiber (Lyocell manufactured by Lenzing Co., 1.7 dtex, 38 mm length) .

Then, a water stream was jetted to the card web and subjected to entanglement treatment to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 93%. The results of each evaluation are shown in Table 2. Although this sheet had a good touch, it had poor liquid retention and release properties, and was difficult to use due to its slow water absorption rate.

Comparative Example 5
An antibacterial nonwoven fabric sheet was obtained in the same manner as in Example 1 except that a card web having a basis weight of 60 g / m ² was produced using 100% by weight of the antibacterial EVOH-containing fiber obtained in Reference Example 2. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 96%. The results of each evaluation are shown in Table 2. Although this sheet had excellent liquid retention and release properties, it was difficult to use due to its slow water absorption speed, and the touch was also somewhat inferior.

Comparative Example 6
A card web having a basis weight of about 60 g / m ² was prepared by blending 70% by weight of the antibacterial EVOH-containing fiber of Reference Example 2 and 30% by weight of cotton fiber manufactured by Marusan Co., Ltd.

Then, a water stream was jetted to the card web and subjected to entanglement treatment to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 94%. The results of each evaluation are shown in Table 2. This sheet was not satisfactory in terms of liquid retention, release, flexibility, and fit to the skin.

Comparative Example 7
The wet non-woven fabric obtained in Example 3 was used as an antibacterial non-woven fabric sheet without hydroentanglement treatment. The results of each evaluation are shown in Table 2. The void ratio of this non-woven fabric sheet was 78%, and although it first had a good touch, it had inferior liquid retention and release properties, and was not satisfactory in handleability.

Comparative Example 8
A card web having a basis weight of about 60 g / m ² was prepared by blending 50% by weight of the EVOH-containing fiber of Reference Example 6 and 50% by weight of a solvent-spun cellulosic fiber (Lyocell manufactured by Lenzing Co., 1.7 dtex, 38 mm length).

Next, a water stream was jetted to the card web and subjected to entanglement treatment to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain a non-woven sheet. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained nonwoven fabric sheet was 95%. The results of each evaluation are shown in Table 2. This sheet had sufficient liquid retention and release properties, as well as good touch, but was significantly inferior in terms of antibacterial properties.

(Reference example 7: single fiber)
(1) Silver-based antibacterial fine particles ("Sanen Zeomic Co., Ltd." AV10D "), in which silver ions are supported on an inorganic ion exchanger in 99 parts by weight of an ethylene-vinyl alcohol copolymer having an ethylene content of 44 mol% 1 part by weight of 2.5 μm, substantially cube-shaped) was blended and spun at a spinning temperature of 240 ° C. in a melt extruder. After the spun yarn was cooled and solidified, it was taken up on a bobbin via a take-up roller.

  (2) Next, this twill yarn is thermally drawn at a drawing temperature of 80 ° C. at a draw ratio of 2.4 times, and after applying an oil agent in an oil agent bath, a crimper such as a stuffer-type crimper The crimp process was performed using Subsequently to the crimp application treatment, the fiber was dried with hot air at 100 ° C., and cut to an arbitrary cut length to obtain an antimicrobial EVOH-containing fiber (1.4 dtex, circular cross section). Both the spinnability and the stretchability were good, the strength was 3.1 cN / dtex, the elongation was 26%, and the Young's modulus was 30.8 cN / dtex.

(Reference Example 8: Composite Fiber)
(1) Silver-based antibacterial fine particles ("Sanen Zeomic Co., Ltd." AV10D "), in which silver ions are supported on an inorganic ion exchanger in 99 parts by weight of an ethylene-vinyl alcohol copolymer having an ethylene content of 44 mol% Round cross section using a composite spinning apparatus comprising a melt extruder and a copolymer comprising 1 part by weight of 2.5 μm (approximately cubic) as a sheath and a thermoplastic polymer of polyethylene terephthalate as a core At a spinneret, a sheath-core type was bonded and spun at a spinning temperature of 280 ° C. and a sheath-core weight ratio of 50:50. After cooling and solidifying the spun yarn, it was wound onto a bobbin via a take-up roller.

  (2) Next, this twill yarn is thermally drawn at a drawing temperature of 80 ° C. at a draw ratio of 2.6 times, and after applying an oil agent in an oil agent bath, a crimper such as a stuffer-type crimper The crimp process was performed using Subsequently to the crimp application treatment, the fiber was dried with hot air at 100 ° C., and cut to an arbitrary cut length to obtain an antimicrobial EVOH-containing fiber shown in Table 3 below (1.7 dtex, sheath-core weight ratio 50: 50, circular cross section, core diameter 8.9 μm). Both spinnability and stretchability were good, strength was 3.6 cN / dtex, elongation was 31%, and Young's modulus was 33.9 cN / dtex.

(Reference Example 9: Composite Fiber)
(1) The twill yarn of Reference Example 8 is thermally drawn at a drawing temperature of 80 ° C. at a draw ratio of 2 times, applied with an oil agent in an oil agent bath, and cut into 10 mm to have the antibacterial properties shown in Table 3 below. An EVOH-containing fiber was obtained (1.7 dtex, 10 mm length, sheath-core weight ratio 50: 50, circular cross section, diameter 8.9 μm of core portion). Both spinnability and stretchability were good, strength was 3.6 cN / dtex, elongation was 31%, and Young's modulus was 33.9 cN / dtex.

(Reference Example 10: Single fiber)
Silver-based inorganic antibacterial particles ("AV10D" manufactured by Sinanen Zeomic, average particle diameter 2) in which silver ions are supported on an inorganic ion exchanger in 99 parts by weight of an ethylene-vinyl alcohol copolymer having an ethylene content of 85 mol%. 1 part by weight of 5 .mu.m, substantially cubic shape was blended, and spun as in Reference Example 7 to obtain an antimicrobial EVOH-containing fiber (1.4 dtex, 51 mm in length, circular cross section). Both spinnability and stretchability were good, strength was 3.7 cN / dtex, elongation was 24%, Young's modulus was 35.1 cN / dtex.

(Reference Example 11: Composite Fiber)
An antibacterial EVOH-containing fiber was obtained in the same manner as in Reference Example 8 except that the discharge amount of the resin, take-up speed, and draw ratio were adjusted so that the fineness was 5.5 dtex (5.5 dtex, 51 mm length, Sheath core weight ratio 50: 50, circular cross section, core diameter 16.0 μm). Both spinnability and stretchability were good, strength was 2.7 cN / dtex, elongation was 36%, and Young's modulus was 28.7 cN / dtex.

(Reference Example 12: Composite Fiber)
(1) A round cross section using a composite spinning apparatus comprising a melt extruder and a thermoplastic polymer consisting of polyethylene terephthalate as a core, with an ethylene-vinyl alcohol copolymer having an ethylene content of 44 mol% as a sheath At a spinneret, a sheath-core type was bonded and spun at a spinning temperature of 280 ° C. and a sheath-core weight ratio of 50:50. After cooling and solidifying the spun yarn, it was wound onto a bobbin via a take-up roller.

  (2) Next, this twill yarn is thermally drawn at a drawing temperature of 80 ° C. at a draw ratio of 2 times, and after an oil agent is applied in an oil agent bath, a crimper such as a stuffer-type crimp applicator is used I performed a crimp process. Subsequently to the crimp application treatment, the fiber was dried with hot air at 100 ° C. and cut to 51 mm to obtain an EVOH-containing fiber (3.4 dtex, 51 mm length, sheath core weight ratio 50: 50, circular cross section, core Part diameter 12.5 μm). Both spinnability and stretchability were good, strength was 3.6 cN / dtex, elongation was 38%, Young's modulus was 38.5 cN / dtex.

[Example 7]
A card web of about 60 g / m ^{2 in} basis weight was prepared by blending 50% by weight of the antibacterial EVOH-containing fiber of Reference Example 7 and 50% by weight of solvent-spun cellulose-based fiber (Lyocell manufactured by Lenzing Co., 1.7 dtex, 38 mm length) .

Then, a water stream was jetted to the card web and subjected to entanglement to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 90%. The results of each evaluation are shown in Table 3. This sheet had sufficient liquid retention, liquid return to the raw fabric and had a good touch.

[Example 8]
A card web of about 60 g / m ^{2 in} basis weight was prepared by blending 50% by weight of the antibacterial EVOH-containing fiber of Reference Example 8 and 50% by weight of solvent-spun cellulose-based fiber (Lyocell manufactured by Lenzing Co., 1.7 dtex, 38 mm length) .

Then, a water stream was jetted to the card web and subjected to entanglement to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 92%. The results of each evaluation are shown in Table 3. This sheet had sufficient liquid retention, liquid return to the raw fabric and had a good touch.

[Example 9]
50 weight% of the antibacterial EVOH-containing fiber of Reference Example 9 and 50 weight% of solvent-spun cellulose-based fiber (Lyothel, 1.7 dtex, 12 mm length) manufactured by Lenting Co., dispersed in water, wet weight method to about 60 g A wet nonwoven fabric of 1 / m ² was produced.

Subsequently, a water stream was jetted to the wet nonwoven fabric and subjected to entanglement treatment to obtain a hydroentangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial nonwoven fabric sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 86%. The results of each evaluation are shown in Table 3. This sheet had sufficient liquid retention, liquid return to the raw fabric and had a good touch.

[Example 10]
A card web of about 60 g / m ^{2 in} basis weight was prepared by blending 50% by weight of the antibacterial EVOH-containing fiber of Reference Example 11 and 50% by weight of solvent-spun cellulosic fiber (Lynodel, 1.7 dtex, 38 mm long) manufactured by Lenzing Co. .

Then, a water stream was jetted to the card web and subjected to entanglement to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 94%. The results of each evaluation are shown in Table 3. This sheet had sufficient liquid retention, liquid return to the raw fabric and had a good touch.

[Example 11]
The card web obtained in Example 8 was sprayed with a water stream and subjected to entanglement to obtain a water-entangled non-woven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven fabric sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.15 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 8 MPa was injected on two sides of each side to cause entanglement. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 98%. The results of each evaluation are shown in Table 3. While this sheet had sufficient liquid retention and liquid return to the raw fabric, the touch was slightly inferior.

Comparative Example 9
An attempt was made to produce a yarn in the same manner as in Reference Example 8, except that a silver based inorganic antibacterial particle (in a product made by Sinanen Zeomic, average particle diameter 0.008 μm, substantially cubic shape) having silver ions supported on an inorganic ion exchanger was blended. However, stable spinning could not be performed due to poor spinnability.

Comparative Example 10
A yarn was tried to be produced in the same manner as in Reference Example 8 except that a silver based inorganic type antibacterial fine particle (Sinanen Zeomic Co., Ltd., average particle diameter 25 μm, substantially cubic shape) having silver ions supported on an inorganic ion exchanger was blended. The yarn could not be stably produced due to poor spinnability.

Comparative Example 11
Silver-based inorganic antibacterial particles (“AV10D” manufactured by Sinanen Zeomic, average particle diameter 2) in which silver ions are supported on an inorganic ion exchanger in 99 parts by weight of an ethylene-vinyl alcohol copolymer having an ethylene content of 8 mol%. .5 μm, approximately cube shape) 1 part by weight was blended, and it was tried to make a yarn in the same manner as in Reference Example 7. However, stable spinning could not be performed due to poor spinnability.

Comparative Example 12
A card web of about 60 g / m ^{2 in} basis weight was prepared by blending 50% by weight of the antibacterial EVOH-containing fiber of Reference Example 10 and 50% by weight of solvent-spun cellulose fiber (Lyothel, 1.7 dtex, 38 mm length) .

Then, a water stream was jetted to the card web and subjected to entanglement to obtain a water entangled nonwoven fabric having a basis weight of about 60 g / m ² , to obtain an antibacterial non-woven sheet. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained liquid holding sheet was 91%. The results of each evaluation are shown in Table 4.

  Although this sheet had a good touch, it did not have sufficient liquid retention and liquid return to the original fabric.

Comparative Example 13
An antibacterial nonwoven fabric sheet was obtained in the same manner as in Example 7, except that the antibacterial EVOH-containing fiber obtained in Reference Example 8 was used to prepare a card web with a basis weight of 60 g / m ² . Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 96%. The results of each evaluation are shown in Table 4.

  This sheet was not satisfactory for the liquid return to the raw fabric, and furthermore, it was difficult to use because the water absorption speed was slow, and the touch was inferior.

Comparative Example 14
A card web of about 60 g / m ^{2 in} weight is prepared by blending 35% by weight of the antibacterial EVOH-containing fiber of Reference Example 8 and 65% by weight of a solvent-spun cellulose fiber (Lyingse manufactured by Liyose, 1.7 dtex, 38 mm length) did.

Then, a water stream was jetted to the card web and subjected to entanglement treatment to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 95%. The results of each evaluation are shown in Table 4.

  This sheet was not sufficiently satisfactory in terms of liquid retention, liquid absorption speed, and liquid return to the raw fabric.

Comparative Example 15
A card web having a basis weight of about 60 g / m ² was prepared by blending 70% by weight of the antibacterial EVOH-containing fiber of Reference Example 8 and 30% by weight of cotton fiber manufactured by Marusan Co., Ltd.

Then, a water stream was jetted to the card web and subjected to entanglement to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet of the present invention. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 93%. The results of each evaluation are shown in Table 4.

  This sheet was not satisfactory in terms of liquid retention, flexibility, and skin fit.

Comparative Example 16
The wet non-woven fabric obtained in Example 9 was used as an antibacterial non-woven fabric sheet without hydroentanglement treatment. The porosity of this antibacterial non-woven fabric sheet was 74%, and although it had a good touch first, it was inferior to the stress at the time of 30% elongation when wet, and was not satisfactory in handleability.

Comparative Example 17
A card web having a basis weight of about 60 g / m ² was prepared by blending 50% by weight of the EVOH-containing fiber of Reference Example 12 and 50% by weight of a solvent-spun cellulosic fiber (Lyocell manufactured by Lenzing Co., 1.7 dtex, 38 mm length).

Then, a water stream was jetted to the card web and subjected to entanglement treatment to obtain a water entangled nonwoven fabric having a basis weight of 60 g / m ² to obtain an antibacterial non-woven sheet. In the hydroentanglement process, nozzles having a diameter of 0.1 mm were provided at intervals of 0.6 mm in the width direction of the web, and water pressure of 6 MPa was jetted on two sides of each side to entangle. Moreover, the porosity of the obtained antibacterial nonwoven fabric sheet was 95%. The results of each evaluation are shown in Table 4.

  This sheet had sufficient liquid retention and release properties, as well as good touch, but was significantly inferior in terms of antibacterial properties.

  The antibacterial non-woven sheet of the present invention is used for absorbing liquid components and contacting the skin, for example, sheets for absorbing body fluid (for example, surface materials such as napkins and diapers, diaper liners, wet tissues, etc.), skin care sheets (for example, , Face mask, make-up removal sheet, cleansing sheet or body washing sheet (sweat wipe sheet, oil removal sheet, cooling sheet etc.), medical use sheet (anti-stain sheet, wet cloth etc.) etc. Especially, the antibacterial of the present invention Non-woven fabric sheet in which liquid components such as cosmetic fluid (cosmetics) are impregnated, the quick return of the liquid component is possible even when pressed with a finger, so moisturizing the whole face, nose, eyes, mouth, neck, etc., whitening etc. It is useful for the face mask which is impregnated with the effect ingredient of the above and is also equipped with the antibacterial property.

  1 Laser displacement meter, 2, 5 load, 3, 6 sample, 4, 7 measurement stand.

Claims (8)

An antibacterial ethylene-vinyl alcohol copolymer containing inorganic antibacterial particles dispersed therein is present in at least a part of the fiber surface, and the average particle diameter of the inorganic antibacterial particles is 0.01 to 20 μm. And the antibacterial fiber having an ethylene content of 10 to 70 mol% of the antibacterial ethylene-vinyl alcohol copolymer and the solvent-spun cellulose-based fiber are mutually entangled, and the antibacterial fiber diameter and an inorganic antibacterial particle diameter antibacterial nonwoven fabric sheet ratio Ru der 0.8 of the flowable composition is a facemask using the liquid content sheets together against,
When the flowable composition is impregnated at 900% by weight with respect to its own weight and removed by applying a load of 260 g / cm ² for 1 minute, reciprocation with respect to compression in the thickness direction is 35% or more in 5 minutes Feature, face mask . 2. The face mask according to claim 1, wherein the fiber length of the antibacterial fiber and the solvent-spun cellulose-based fiber is 5 to 60 mm, and they are entangled with each other. The antibacterial ethylene-vinyl alcohol copolymer fiber wherein the antibacterial fiber is a sheath-core type composite fiber, and the sheath part contains inorganic antibacterial fine particles having an average particle diameter of 0.01 to 20 μm dispersed therein. The face mask according to claim 1 or 2, wherein the core portion is made of a hydrophobic resin and has a diameter of 5 to 15 μm while being a polymer. The surface of the said antibacterial nonwoven fabric sheet has an unevenness | corrugation, The face mask of any one of Claims 1-3 characterized by the above-mentioned. The face mask according to any one of claims 1 to 4, wherein the antibacterial fiber is contained in an amount of 30 to 90% by weight. The face mask according to claim 5, comprising 40 to 90% by weight of the antibacterial fiber, and a Young's modulus of the antibacterial fiber is 25 cN / dtex or more. The face mask according to claim 1 , wherein the flowable composition comprises water. The face mask according to claim 1 , wherein the flowable composition comprises a cosmetic.

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