JP6611890B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article having a gel-like composition on the skin surface side that has an appropriate hardness and can exhibit an excellent emollient effect without causing stickiness. Moreover, this invention relates to the nonwoven fabric which has the above-mentioned gel-like composition on the surface.

  Absorbent articles such as sanitary napkins, panty liners, and diapers have improved their basic performance such as absorption performance through technological developments accumulated over many years, and absorb excrement such as menstrual blood and urine compared to before After that, leaks and the like are less likely to occur, and at present, there is a demand for further enhancement of functionality, for example, having a feeling of wearing close to underwear, excellent flexibility and cushioning.

For example, Patent Document 1 discloses an absorbent article including an effective amount of a lotion coating that is semisolid or solid at 20 ° C. and partially movable to the wearer's skin on at least a part of the outer surface of the topsheet. Is disclosed. Further, according to Patent Document 1, (i) 10 to 95% of the lotion coating has a plasticity or fluidity consistency at 20 ° C., and is a petroleum-based emollient, fatty acid ester emollient, alkyl ethoxylate. A substantially moisture-free emollient comprising an emollient and one selected from these mixtures, (ii) 5 to 90% fix the emollient on the outer surface of the face sheet An immobilizing material that has a melting point of at least 35 ° C., preferably at least 40 ° C., polyhydroxy fatty acid ester, polyhydroxy fatty acid amide, C ₁₄ -C ₂₂ fatty alcohol, C ₁₂ -C ₂₂ fatty acid , C ₁₂ -C ₂₂ fatty alcohol ethoxylates, and the immobilized substance der selected mixtures thereof There is a.

  In the absorbent article disclosed in Patent Document 1, an immobilizing substance having a melting point of 35 ° C. or more crystallizes in a lotion coating at room temperature (25 ° C.), thereby increasing the viscosity of the lotion coating. Although it has the effect of immobilizing the lotion coating, if the viscosity of the lotion coating is increased in this way, the active ingredient that exhibits the emollient effect is trapped inside, and in particular, the load on the lotion coating is reduced. If it is small, a sufficient amount of the oil agent is not released, and a satisfactory emollient effect may not be obtained. In addition, such a high-viscosity lotion coating has a risk of being inferior in wearing feeling because it is hard as a material applied to the top sheet of the absorbent article (that is, a material that directly contacts the skin). .

  On the other hand, Patent Document 2 discloses a gel-like composition that exhibits delayed elasticity with respect to the hardness and elongation of the gel. The composition disclosed in Patent Document 2 includes a high molecular weight triblock styrene thermoplastic elastomer having a number average molecular weight of 130,000 or more and a low molecular weight triblock styrene heat having a number average molecular weight of 100,000 or less. It is a gel elastomer composed of a plastic elastomer and a softening agent. The high molecular weight triblock styrene elastomer absorbs and retains a large amount of softening agent, while ensuring the flexibility of the composition, and the low molecular weight triblock type. Although retarded elasticity is imparted by containing a styrenic elastomer, such a composition is still insufficient in terms of stickiness of the gel surface and release of contained components. It was.

Japanese National Patent Publication No. 10-509896 JP 2001-151980 A

  Therefore, the present invention includes a gel-like composition on the surface having an appropriate hardness and capable of exhibiting an excellent emollient effect without causing stickiness by the oil agent being easily released even under a light load. An object is to provide an absorbent article. Another object of the present invention is to provide a non-woven fabric having a gel-like composition on the surface that has an appropriate hardness and can exhibit an excellent emollient effect without causing stickiness.

The absorbent article which concerns on 1 aspect (aspect 1) of this invention is an absorbent article which contains a gel-like composition in the surface contact | abutted with a wearer's skin surface, Comprising: The said gel-like composition has a weight average molecular weight. A styrene-based thermoplastic elastomer (A1) composed of a block copolymer of 100,000 or more and less than 180,000 and a triblock or more, and a block copolymer having a weight average molecular weight of 180,000 or more and 300,000 or less and a triblock or more. With respect to 100 parts by mass of the styrene-based thermoplastic elastomer mixture (A) containing the polymer-based styrene-based thermoplastic elastomer (A2) at a mass ratio of (A1) / (A2) = 95/5 to 50/50 500 to 4800 parts by mass of an aliphatic hydrocarbon oil (B) having a kinematic viscosity at 37.8 ° C. of 5 to 50 mm ² / s and a fatty acid triglyceride having 8 to 22 carbon atoms which is liquid at 20 ° C. (C) contains 60 to 1000 parts by mass.

  In the absorbent article of this aspect 1, since the gel composition contained in the surface that comes into contact with the skin surface of the wearer is composed of the specific composition, it has an appropriate hardness and is oily even under a light load. By being easily released, an excellent emollient effect can be exhibited without causing stickiness. Therefore, the absorbent article of aspect 1 can obtain an excellent wearing feeling and emollient effect as an absorbent article.

  An absorbent article according to another aspect (aspect 2) of the present invention is the absorbent article according to aspect 1, wherein the block copolymer has two or more block components composed of styrenic hard segments in the molecular chain. It is.

  In the absorbent article of aspect 2, the block copolymer contained in the above-described gel-like composition has two or more block components composed of styrene-based hard segments in the molecular chain. A hard gel can be easily obtained, and the oil agent can be easily released.

  The absorbent article according to yet another aspect (Aspect 3) of the present invention is the absorbent article according to Aspect 2, wherein at least the block components at both ends of the molecular chain of the block copolymer are composed of the styrenic hard segment. Block component.

  In the absorbent article according to aspect 3, the block copolymer contained in the gel composition is a block in which block components at least at both ends in the molecular chain of the block copolymer are the styrenic hard segments. Since it is a component, it is easy to obtain a gel with an appropriate hardness, and the oil agent release is further improved.

  The absorbent article according to yet another aspect (Aspect 4) of the present invention is the absorbent article according to any one of Aspects 1 to 3, wherein the aliphatic hydrocarbon oil (B) is hydrogenated polyisobutene.

  In the absorbent article of aspect 4, the aliphatic hydrocarbon oil (B) contained in the gel composition described above is hydrogenated polyisobutene, so that stickiness due to the oil released from the gel hardly occurs. Emollient effect can be exhibited more effectively.

  The absorbent article according to yet another aspect (aspect 5) of the present invention is the absorbent article according to any one of aspects 1 to 4, wherein the fatty acid triglyceride (C) is a saturated fatty acid triglyceride (C8-12). c1) and unsaturated fatty acid triglycerides (c2) having 14 to 22 carbon atoms are contained at a mass ratio of (c1) / (c2) = 95/5 to 50/50.

  In the absorbent article according to this aspect 5, the fatty acid triglyceride (C) contained in the above-mentioned gel composition is a saturated fatty acid triglyceride (c1) having 8 to 12 carbon atoms and an unsaturated fatty acid triglyceride having 14 to 22 carbon atoms. Since (c2) is contained in a predetermined mass ratio, a gel with a more appropriate hardness can be obtained and a more excellent emollient effect can be exhibited.

  An absorbent article according to another aspect (aspect 6) of the present invention is the absorbent article according to any one of aspects 1 to 5, wherein the absorbent article includes a liquid-permeable surface sheet and a liquid-impermeable sheet. A surface provided with a back sheet and an absorbent body positioned between the top sheet and the back sheet, and a surface in contact with the skin surface of the wearer is a skin side surface of the top sheet.

  In the absorbent article of this aspect 6, the gel composition composed of the above specific composition is included in the surface on the skin surface side of the surface sheet that is most likely to come into contact with the skin surface of the wearer. The effect of the gel composition can be more reliably exhibited.

  The absorbent article according to still another aspect (Aspect 7) of the present invention is the absorbent article according to Aspect 6, wherein the gel composition is in the form of a bowl on the skin side surface of the top sheet in plan view. Alternatively, they are arranged in a dot shape.

  In the absorbent article according to this aspect 7, the gel-like composition described above has a hydrophobic property on the surface on the skin surface side of the topsheet, in which the above-described gel-like composition is arranged in a bowl shape or a dot shape in a plan view. Since the arrangement region of the object and the non-arrangement region of the gel-like composition are formed, the exclusive action due to the hydrophobicity in the arrangement region of the gel-like composition and the surface in the non-arrangement region of the gel-like composition Liquid excrement such as urine supplied on the skin side surface of the topsheet due to a synergistic effect with the water-absorbing action due to the hydrophilicity inside the sheet, through the non-arranged region of the gel composition, It is possible to form a state that is easily pulled into the top sheet. Thereby, the absorbent article of the present embodiment 6 can obtain not only the effects relating to the gel hardness and emollient effect described above, but also excellent liquid permeability and liquid repellency as an absorbent article.

  The absorbent article according to yet another aspect (aspect 8) of the present invention is the absorbent article according to any one of aspects 1 to 7, wherein the absorbent article is a sanitary napkin, a panty liner, a diaper, or a urine absorbing pad. It is.

  In the absorbent article according to this aspect 8, the absorbent article is a sanitary napkin, panty liner, diaper, or urine absorbing pad, and is applied to the skin surface particularly sensitive to irritation. The effect exhibited by the gel composition can be more suitably enjoyed.

Yet another embodiment (embodiment 9) of the present invention is a non-woven fabric having a gel composition on the surface, wherein the gel composition has a weight average molecular weight of 100,000 or more and less than 180,000 and triblock or more. A styrenic thermoplastic elastomer (A1) comprising a block copolymer of styrene, a styrene thermoplastic elastomer (A2) comprising a block copolymer having a weight average molecular weight of 180,000 to 300,000 and having a triblock or more; In a mass ratio of (A1) / (A2) = 95/5 to 50/50, the kinematic viscosity at 37.8 ° C. is 5 to 50 mm ² with respect to 100 parts by mass of the styrene-based thermoplastic elastomer mixture (A). 500 to 4800 parts by mass of an aliphatic hydrocarbon oil (B) that is / s and 60 to 1000 parts by mass of a fatty acid triglyceride (C) that is liquid at 20 ° C. It is what you have.

  In the nonwoven fabric of this aspect 9, since the gel-like composition contained on the surface is composed of the above-mentioned specific composition, it has an appropriate hardness, and the oil agent is easily released even under a light load. An excellent emollient effect can be exerted without producing any. Therefore, the nonwoven fabric of aspect 8 can provide a comfortable feeling of use, a feeling of wear, and an emollient effect to the nonwoven fabric or a product using the nonwoven fabric.

  According to the present invention, the gel composition having a suitable hardness and capable of exhibiting an excellent emollient effect without causing stickiness due to the oil agent being easily released even under a light load is included on the surface. An absorbent article and a non-woven fabric having the gel composition on the surface can be provided.

FIG. 1 is a plan view showing a sanitary napkin 1 according to an embodiment of the present invention. FIG. 2 is a plan view showing a sanitary napkin 1 ′ according to another embodiment of the present invention.

  Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the drawings. In the present specification, unless otherwise specified, “a target object (for example, an absorbent article, a nonwoven fabric, etc.) placed on a horizontal surface in an unfolded state from the upper side in the vertical direction is the thickness direction of the target object. "Looking at" is simply called "plan view".

Various directions and the like used in this specification are as follows unless otherwise specified.
In this specification, “width direction W” refers to “a direction in which the length of a vertically long object in a plan view is short (short direction)”, and “long direction L” refers to “a vertically long object in a plan view” "Thickness direction" refers to "perpendicular to an object placed on a horizontal plane in the unfolded state", and these width direction W, longitudinal direction L and thickness The directions are orthogonal to each other. Furthermore, in this specification, “in the width direction W of a vertically long object (for example, absorbent article, nonwoven fabric, etc.) relative to the widthwise central axis extending in the longitudinal direction L” "Inward side in the direction", and "relative to the width direction central axis in the width direction W of the vertically long object" is referred to as "outward side in the width direction".
Further, in this specification, unless otherwise specified, in the thickness direction of the absorbent article, “relatively proximal to the wearer's skin surface when the absorbent article is worn” "The distal side relative to the skin surface of the wearer when the absorbent article is worn" is referred to as "the non-skin surface side".

FIG. 1 is a plan view showing a sanitary napkin 1 (absorbent article) according to an embodiment of the present invention. As shown in FIG. 1, the sanitary napkin 1 according to the present embodiment has a vertically long shape whose overall outer shape is long in the longitudinal direction L in a plan view, and further, a center in the longitudinal direction L. The outer edge of the portion has a shape protruding in a substantially trapezoidal shape toward the outer side in the width direction W. Further, as shown in FIG. 1, the sanitary napkin 1 has side sheets 4 extending along the longitudinal direction L at both ends in the width direction, and extends in the longitudinal direction L at both ends in the width direction. And an embossed portion 5 extending along the outer edge.
Further, the sanitary napkin 1 includes a liquid-permeable top sheet 2 positioned on the skin surface side, a liquid-impermeable back sheet (not shown) positioned on the non-skin surface side, and these in the thickness direction. An absorbent body 3 positioned between the sheets, and the top sheet 2 has a plurality of bowl-shaped gel-like compositions extending along the longitudinal direction L on the skin surface side. 6 is included.

  Hereinafter, the gel composition used for the absorbent article of the present invention will be described in more detail.

[Gel composition]
In the present invention, the gel composition has a weight average molecular weight of 100,000 or more and less than 180,000, and a styrene-based thermoplastic elastomer (A1) made of a block copolymer of triblock or more, and a weight average molecular weight of 18 Styrene-based thermoplastic elastomer (A2) composed of a block copolymer of triblock or more and not less than 10,000 to 300,000 in a mass ratio of (A1) / (A2) = 95/5 to 50/50 and the molecular weight dispersity (Mw / Mn) of 1.25 to 1.60, a styrene-based thermoplastic elastomer mixture (a) 100 parts by mass, kinematic viscosity at 37.8 ° C. is 5 to 50 mm ² / s containing 500 to 4800 parts by mass of an aliphatic hydrocarbon oil (B) and 60 to 1000 parts by mass of a fatty acid triglyceride (C) having 8 to 22 carbon atoms that is liquid at 20 ° C. It is what you have. The gel composition composed of such a specific composition has an appropriate hardness and exhibits an excellent emollient effect without causing stickiness by the oil agent being easily released even under a light load. Therefore, when such a gel-like composition is contained in the surface which contact | abuts the wearer's skin surface of an absorbent article, the wear feeling and emollient effect excellent as an absorbent article can be acquired.

  The styrenic thermoplastic elastomer (A1, A2) used in the gel composition is a block copolymer of a triblock or more containing a styrene hard segment and a soft segment. A block copolymer having two or more block components composed of styrenic hard segments in the molecular chain, more preferably at least both in the molecular chain, from the point that it is easily obtained and the release of the oil agent is good. The terminal block component is a block copolymer which is a block component composed of the styrenic hard segment. The styrene hard segment is not particularly limited, and examples thereof include polystyrene, poly (α-methylstyrene), poly (o-methylstyrene), poly (m-methylstyrene), and poly (p-methylstyrene). Styrenic polymer is mentioned. The soft segment is not particularly limited, and examples thereof include olefin polymers such as polyethylene, polypropylene, polybutylene, polybutadiene, and polyisoprene. In this specification, a block component composed of a styrene hard segment may be referred to as a “styrene block component”, and a block component composed of an olefin soft segment may be referred to as an “olefin block component”.

  The copolymer used as the styrenic thermoplastic elastomer (A1, A2) is not particularly limited as long as it is a triblock or higher styrene block copolymer. For example, styrene-butadiene-styrene block copolymer (SBS) ), Styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-isoprene-butylene-styrene block copolymer (SIBS), styrene-isoprene-styrene block copolymer (SIS), styrene-ethylene-propylene -A styrene block copolymer (SEPS), a styrene-ethylene-ethylene-propylene styrene block copolymer (SEEPS), and a combination of two or more of these. Among these, styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-ethylene-propylene-styrene block copolymer (SEPS) in terms of the hardness and elongation of the gel after application to the surface sheet Styrene-ethylene / ethylene-propylene-styrene block copolymer (SEEPS) or a combination of two or more of these is preferable. When a diblock copolymer is used as the styrenic thermoplastic elastomer (A1, A2), the styrenic hard segment interaction (π-π stacking) is weakened, so the gel has sufficient hardness and elasticity. May not be obtained (that is, it becomes too soft). The styrenic thermoplastic elastomer has a network-like network structure formed by a plurality of aggregation domains formed by the interaction of the styrene hard segments and an olefinic soft segment connecting the plurality of aggregation domains. Therefore, it is considered that the function as an elastic body is expressed. In addition, such a network-like network structure is considered to have a function of retaining an oil agent (that is, an aliphatic hydrocarbon oil (B) and a fatty acid triglyceride (C)), which will be described later, while appropriately releasing it. It is done.

  The block copolymer is preferably 10 to 50% by mass of a styrene block component and about 50 to 90% by mass of an olefinic block component, more preferably 15 to 40% by mass of styrene block component and 60 to 85% by mass. % Olefinic block component. When the amount of the styrenic block component is less than 10% by mass, the amount of the styrenic block component that forms the aggregation domain decreases, and thus the styrenic thermoplastic elastomer does not easily form the above-described network network structure. . On the other hand, when the amount of the styrenic block component exceeds 50% by mass, the amount of the olefinic block component that holds the oil agent or the like decreases, so the amount of the oil agent or the like that can be held decreases, and the styrene hard segment Since the amount of the aggregation domain formed by this increases, the gel after being applied to the topsheet becomes hard, and there is a possibility that the wearing feeling of the absorbent article is inferior.

  In the present invention, the styrene-based thermoplastic elastomer mixture (A) is composed of a mixture of two types of styrene-based thermoplastic elastomers (A1, A2) having different weight average molecular weights.

  Of the two types of styrene-based thermoplastic elastomers (A1, A2), the styrene-based thermoplastic elastomer (A1) having the lower weight average molecular weight (hereinafter referred to as “low-molecular-weight styrene-based thermoplastic elastomer (A1)”). May have a weight average molecular weight in the range of 100,000 to less than 180,000, preferably in the range of 100,000 to 150,000. When the weight average molecular weight is less than 100,000, the hardness of the gel after being applied to the top sheet is reduced (that is, the gel becomes too soft). Of the two types of styrene-based thermoplastic elastomers (A1, A2), the styrene-based thermoplastic elastomer (A2) having the higher weight average molecular weight (hereinafter referred to as “high-molecular-weight styrene-based thermoplastic elastomer (A2)”). ) Has a weight average molecular weight in the range of 180,000 to 300,000, preferably in the range of 220,000 to 280,000. When this weight average molecular weight exceeds 300,000, the hardness of the gel may decrease (that is, the gel may become too soft) or stickiness may occur.

  The styrenic thermoplastic elastomer mixture (A) has a dispersity (that is, a ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) (Mw / Mn)) within a range of 1.25 to 1.60. Preferably there is. When the degree of dispersion is within such a range, the gel is likely to have an appropriate hardness and the oil agent is easily released in an appropriate amount.

  The weight average molecular weights (Mw) of the two types of styrene-based thermoplastic elastomers (A1, A2) and the styrene-based thermoplastic elastomer mixture (A), and the dispersity (Mw) of the styrene-based thermoplastic elastomer mixture (A) / Mn) can be obtained by polystyrene conversion by GPC measurement under the following conditions using tetrahydrofuran (THF) as a mobile phase.

[GPC measurement conditions]
Device: GPC-8220 (manufactured by Tosoh Corporation)
Column: Shodex LF-804 (manufactured by Showa Denko KK)
Temperature: 40 ° C
Solvent: THF
Flow rate: 1.0 mL / min Sample concentration: 0.05 to 0.6% by mass
Injection volume: 0.1 mL
Detection: RI (differential refractometer)

  As described above, in the present invention, the gel composition contains a mixture of two types of styrenic thermoplastic elastomers (A1, A2) having different weight average molecular weights. The mass ratio of the thermoplastic elastomer (A1) to the high molecular weight styrene thermoplastic elastomer (A2) is in the range of (A1) / (A2) = 95/5 to 50/50, preferably 90/10 -60/40, more preferably 80 / 20-70 / 30. When the blending ratio of the low molecular weight styrenic thermoplastic elastomer (A1) exceeds 95 in the mass ratio, the gel hardness after application to the top sheet becomes insufficient, and the blending ratio is less than 50. The amount of oil released from the gel may be reduced.

In the present invention, the gel composition further includes an aliphatic hydrocarbon oil (B) having a kinematic viscosity at 37.8 ° C. of 5 to 50 mm ² / s. The aliphatic hydrocarbon oil (B) is not particularly limited as long as it is an aliphatic compound composed of carbon and hydrogen, and may be any of a saturated aliphatic hydrocarbon oil and an unsaturated aliphatic hydrocarbon oil.

  Examples of the saturated aliphatic hydrocarbon oil include liquid paraffin, hydrogenated polyisobutene, α-olefin oligomer, squalane and the like. Examples of the unsaturated aliphatic hydrocarbon oil include squalene and polybutene. Among these, hydrogenated polyisobutene is particularly preferably used as the aliphatic hydrocarbon oil (B) because stickiness due to the released oil agent hardly occurs and the above-mentioned emollient effect can be more effectively exhibited. it can.

The aliphatic hydrocarbon oil (B) has a kinematic viscosity at 37.8 ° C. is in the range of 5 to 50 mm ² / s, preferably in the range of 10 to 30 mm ² / s, more preferably 10 to 20 mm ² Within the range of / s. If the kinematic viscosity is less than 5 mm ² / s, the aliphatic hydrocarbon oil (B) is likely to volatilize during the production of the gel composition, and there is a risk that the physical properties of the gel after application to the topsheet will vary. There is. On the other hand, when the kinematic viscosity exceeds 50 mm ² / s, the gel after being applied to the top sheet becomes hard, and the amount of oil released is reduced. The kinematic viscosity of the aliphatic hydrocarbon oil (B) is measured at a test temperature of 37.8 ° C. using a Canon Fenceke viscometer according to “5. Kinematic viscosity test method” of JIS K 2283: 2000. Can be obtained.

  The blending amount of the aliphatic hydrocarbon oil (B) is in the range of 500 to 4800 parts by mass, preferably 800 to 3000 parts by mass with respect to 100 parts by mass of the styrene-based thermoplastic elastomer mixture (A). Within the range, more preferably within the range of 1000 to 1500 parts by mass. When this blending amount is less than 500 parts by mass, the gel after being applied to the top sheet becomes hard. On the other hand, when this compounding quantity exceeds 4800 mass parts, the said gel will become too soft and it will become difficult to maintain the shape of the said gel.

  In the present invention, the gel composition is liquid at 20 ° C. (that is, normal temperature), and further contains a fatty acid triglyceride (C) having 8 to 22 carbon atoms. The fatty acid triglyceride used in the present invention is, for example, a dehydration synthesis reaction of glycerin and one or more fatty acids in the absence of a catalyst, or a transesterification reaction between glycerin and one or more fatty acid alcohol esters. By doing so, it can be obtained.

As fatty acid triglyceride which can be used for this invention, C8-C12 saturated fatty acid triglyceride (c1) using saturated fatty acids, such as capric acid, caprylic acid, lauric acid, is mentioned, for example. Specific examples of commercially available products include Panacet (trade name) manufactured by NOF Corporation, Coconut (trade name) manufactured by Kao Corporation, ODO manufactured by Nisshin Oilio Co., Ltd., and the like.
Furthermore, fatty acid triglycerides that can be used in the present invention include unsaturated fatty acid triglycerides (c2) having 14 to 22 carbon atoms such as triglycerides of oleic acid. Specific examples of commercially available products include olive oil, soybean oil, cocoon oil, sunflower oil, rapeseed oil, sesame oil, corn oil, cottonseed oil, safflower oil, jojoba oil, sunflower oil, and the like. Among these, olive oil, coconut oil and sunflower oil containing oleic acid triglyceride in a proportion of 70% by mass or more are particularly preferable.

  The blending amount of the fatty acid triglyceride (C) is in the range of 60 to 1000 parts by weight, preferably in the range of 80 to 900, more preferably 100 parts by weight of the styrene thermoplastic elastomer mixture (A). Is in the range of 100 to 700 parts by mass. If the blending amount is less than 60 parts by mass, the amount of oil released will be reduced. On the other hand, if it exceeds 1000 parts by mass, the amount of oil released will increase so much that stickiness may occur.

  In the present invention, as the fatty acid triglyceride (C), it is preferable to use a mixture of the above-mentioned two types of fatty acid triglycerides (c1, c2) having different carbon numbers. As these specific blending amounts, a saturated fatty acid triglyceride (c1) having 8 to 12 carbon atoms and an unsaturated fatty acid triglyceride (c2) having 14 to 28 carbon atoms from the point that the hardness and emollient effect of the gel are improved. Is preferably contained in a mass ratio within the range of (c1) / (c2) = 95/5 to 50/50. The fatty acid triglyceride (C) contains a saturated fatty acid triglyceride (c1) having 8 to 12 carbon atoms and an unsaturated fatty acid triglyceride (c2) having 14 to 22 carbon atoms in a mass ratio within the above range. Thus, a gel having a more appropriate hardness can be obtained, and a more excellent emollient effect can be exhibited.

  In the present invention, the gel composition is added to the styrenic thermoplastic elastomer mixture (A), the aliphatic hydrocarbon oil (B) and the fatty acid triglyceride (C) in order to further improve the effects of the present invention. In addition, silicone oil (D) may further be contained. It is preferable that the compounding quantity of this silicone oil (D) exists in the range of 5-60 mass parts with respect to 100 mass parts of said styrene-type thermoplastic elastomer mixtures (A). When the blending amount of the silicone oil (D) is in such a range, even when the content of the oil agent in the gel composition is small, an appropriate amount of the oil agent can be released, so that no stickiness occurs. Further, an excellent emollient effect can be exhibited.

  In addition, in this invention, the said gel-like composition may contain the other additive used for general cosmetics, a lotion, etc. in the range which does not impair the effect of this invention. Examples of such additives include antioxidants, light stabilizers, colorants, pigments, and fragrances.

  The said gel-like composition used for this invention can be manufactured by adding the various components mentioned above simultaneously or in arbitrary orders, and melt-mixing. The melt mixing means is not particularly limited, and any known means can be adopted. Examples of such means include means using a mixing device such as a single screw extruder, a twin screw extruder, a roll, a Banbury mixer, various kneaders, and a compounding pot.

  The gel composition used in the present invention is excellent in hardness and elongation, and has an appropriate release property (sustained release property) of the oil, so that it can be applied while suppressing adhesion to various coating devices or molding devices. Or arbitrary shaping | molding (for example, extrusion molding, injection molding, dipping molding, etc.) can be performed. Furthermore, since the gel composition contains a larger amount of a low molecular weight styrene thermoplastic elastomer than a high molecular weight styrene thermoplastic elastomer, the gel composition exhibits appropriate fluidity even at a temperature of around 100 ° C. Therefore, it is possible to easily stack and integrate various substrates such as nonwoven fabric, paper, fabric, olefin resin, and PET resin by coating or molding.

The gel-like composition comprised by the above specific compositions is arrange | positioned on the surface contact | abutted with the wearer's skin surface of an absorbent article. In the present invention, the surface in contact with the skin surface of the wearer is not only the surface that actually contacts the skin surface of the wearer when the wearer wears the absorbent article of the present invention, It includes a surface that can abut when subjected to body pressure. As such a surface, in addition to the surface on the skin side of the above surface sheet, for example, a skin surface such as a side sheet (see the side sheet 4 of the sanitary napkin 1 according to the above embodiment) or a three-dimensional gather sheet. The surface of the side etc. are mentioned.
In the sanitary napkin 1 which concerns on one Embodiment of this invention, the said gel-like composition 6 is arrange | positioned on the surface by the side of the skin surface of the surface sheet 2. As shown in FIG. Thus, when the said gel-like composition is arrange | positioned on the surface of the skin surface side of the surface sheet which is the easiest to contact a wearer's skin surface, the effect by the above-mentioned gel-like composition will be exhibited more reliably. Can do.

  Moreover, in the sanitary napkin 1 which concerns on one Embodiment of this invention, the said gel-like composition 6 is along the longitudinal direction L of the said sanitary napkin 1 by planar view in the surface by the side of the skin surface of the surface sheet 2. FIG. Are arranged in the form of a plurality of bowls that extend continuously and are arranged at predetermined intervals in the width direction W (see FIG. 1). In the absorbent article of the present invention, the arrangement form of the gel-like composition is not limited to this. For example, the gel-like composition is spread over the entire area in the longitudinal direction L of the absorbent article (that is, the longitudinal direction). (Over both ends of L), may be discontinuously (intermittently) disposed, or is disposed continuously or discontinuously in a partial region in the longitudinal direction L of the absorbent article. Also good.

  FIG. 2 is a plan view showing a sanitary napkin 1 ′ (absorbent article) according to another embodiment of the present invention. In FIG. 2, the same members as the sanitary napkin 1 shown in FIG. 1 (for example, the surface sheet 2 and the absorbent body 3) are denoted by the same reference numerals. In the sanitary napkin 1 ′ according to this embodiment, the gel-like composition 6 ′ is arranged in a plurality of dot-like forms arranged in a staggered manner in a plan view on the surface of the surface sheet 2 on the skin surface side. ing.

  As in the above-described embodiments, when the gel-like composition is arranged in a bowl-like or dot-like shape in plan view, the gel-like composition having hydrophobicity on the surface on the skin side of the topsheet And a non-arrangement region of the gel composition are formed, so that the gel has an exclusive action on water (liquid excrement such as urine) due to hydrophobicity in the arrangement region of the gel composition, and the gel The liquid excrement such as urine supplied on the skin side surface of the surface sheet by the synergistic action with the water absorption action due to the hydrophilicity inside the surface sheet in the non-arranged region of the surface composition is the gel composition Through this non-arranged region, it is possible to form a state of being easily drawn into the top sheet. Thereby, in the absorbent article in which the gel-like composition is arranged as in each of the above-described embodiments, not only the effects relating to the hardness and emollient effect of the gel described above, but also excellent liquid permeability as an absorbent article and Can exhibit liquid repellency.

  The gel composition is arranged in an area ratio of 1 to 50% of the area in an area where the topsheet and the absorber overlap in plan view (that is, an area overlapping in the thickness direction). It is more preferable that the region is arranged at an area ratio of 3 to 40% of the region, and it is particularly preferable that the region is arranged at an area ratio of 5 to 30% of the region. When the gel-like composition is arranged at an area ratio of less than 1% of the region, the amount of the gel-like composition on the surface sheet is too small, and thus the effect exhibited by the gel-like composition is sufficiently I can't show it. On the other hand, when the gel-like composition is arranged at an area ratio exceeding 50% of the area, the area on the top sheet where the gel-like composition is arranged does not absorb liquid excreta, There is a possibility that the area where the liquid excretion can be absorbed in the sheet becomes too small, and the absorbent performance of the absorbent article is lowered.

In the present invention, the topsheet is preferably a gel composition of the above 1 to 30 g / m ^2, more preferably 2 to 20 g / m ^2, particularly preferably in a content of 3 to 10 g / m ² . In addition, in this specification, content of the said gel-like composition can be calculated | required according to the following measuring method.
[Method for measuring content of gel composition contained in surface sheet]
(1) A predetermined range to be measured on the surface sheet on which the gel-like composition is arranged is cut out using a sharp blade such as a cutter blade so as not to change its thickness, and the content measurement is performed. Get a sample for.
(2) The area: SA (m ² ) and mass: SM ₀ (g) of the cut sample are measured.
(3) The sample after measurement is immersed in a solvent in which a gel composition such as an aromatic solvent (eg, xylene) is soluble, and stirred for at least 3 minutes, and the gel composition is placed in the solvent. Elute.
(4) After filtering the sample in the said solvent using the filter paper which measured mass beforehand, a sample is fully wash | cleaned with a solvent on a filter paper as it is. The sample after washing is thoroughly dried in a 100 ° C. oven together with the filter paper.
(5) The mass of the filter paper and the sample after drying is measured, and the mass of the sample after drying: SM ₁ (g) is calculated by subtracting the mass of the filter paper measured in advance from the measured value.
(6) The content _GBS (g / m ² ) of the gel composition is calculated by the following formula (1).

In addition, in order to reduce the measurement error, the content of the gel composition is cut out from a plurality of absorbent articles so that the total area of the sample exceeds 100 cm ^2, and the above ( 2) perform the measurement task to (6), employing the average value of the obtained content G _BS from each measuring operation.

  In the present invention, the method of disposing the above-described gel composition on the surface of the absorbent article (for example, the surface on the skin side of the surface sheet) is not particularly limited, and any known coating method is adopted. be able to. For example, the gel composition is absorbed using an extrusion apparatus equipped with a discharge nozzle; a non-contact type coater such as a spiral coater, curtain coater, spray coater or dip coater; a coating apparatus such as a contact type coater. It can be applied to the surface of a functional article.

  In addition, the gel composition may be applied when producing a material for a surface sheet such as a nonwoven fabric, or may be applied on the surface sheet in an absorbent article production line. From the viewpoint of suppressing the gel composition, the gel composition is preferably applied on the surface sheet in the production line of the absorbent article. In the downstream process (for example, immediately before the process of individually packing the products, etc.), it is preferable to apply on the surface sheet.

  Hereinafter, various members constituting the absorbent article of the present invention will be described in more detail.

[Surface sheet]
In the absorbent article of the present invention, for the liquid-permeable surface sheet, for example, a sheet-like fiber structure such as a nonwoven fabric or a woven fabric can be used. When a nonwoven fabric or a woven fabric is used as the surface sheet, examples of the fibers constituting the nonwoven fabric or the woven fabric include natural fibers and chemical fibers, and more specifically, cellulose fibers such as pulverized pulp and cotton. Regenerated cellulose such as rayon and fibril rayon; semi-synthetic cellulose such as acetate and triacetate; thermoplastic hydrophobic chemical fiber; and thermoplastic hydrophobic chemical fiber subjected to hydrophilization treatment. Further, examples of the thermoplastic hydrophobic chemical fiber include fibers made of polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and the like, fibers made of a graft polymer of PE and PP, and the like.

  Examples of the nonwoven fabric include air-through nonwoven fabric, spunbond nonwoven fabric, point bond nonwoven fabric, spunlace nonwoven fabric, needle punched nonwoven fabric, melt blown nonwoven fabric, and combinations thereof (for example, SMS).

  Moreover, it is preferable that the said nonwoven fabric or woven fabric is hydrophilized. The hydrophilization treatment method is not particularly limited, but a method of coating the surface of the nonwoven fabric or woven fabric with a hydrophilic agent, a method of coating the surface of the fibers constituting the nonwoven fabric or woven fabric, a nonwoven fabric or Examples thereof include a method of adding a hydrophilizing agent to a synthetic resin that is a raw material for fibers constituting the woven fabric.

[Back sheet]
In the absorbent article of the present invention, the liquid-impermeable back sheet is a film containing PE, PP, etc., a resin film having air permeability, and a non-woven fabric such as spunbond or spunlace bonded with a resin film having air permeability. Laminated bodies, multilayer nonwoven fabrics such as SMS, and the like can be used. Considering the flexibility of the absorbent article, for example, a low density polyethylene (LDPE) film having a basis weight of about 15 to about 30 g / m ² is preferable.

  In the present invention, the absorbent article is an intermediate sheet having liquid diffusibility in the surface direction (particularly, the longitudinal direction L) between the top sheet and the absorber and / or between the back sheet and the absorber. Can be included. As such an intermediate sheet, a sheet similar to the sheet-like fiber structure constituting the above-described surface sheet can be used.

[Absorber]
In the absorbent article of the present invention, the absorber is not particularly limited, and any absorber known in the art can be used. Examples of the absorbent body that can be used in the absorbent article of the present invention include those in which an absorbent core made of an absorbent material is covered with a hydrophilic core wrap sheet. Examples of the absorbent material constituting the absorbent core include hydrophilic fibers and superabsorbent polymers. More specifically, cellulose such as pulverized pulp and cotton; regenerated cellulose such as rayon and fibrillar rayon; Semi-synthetic cellulose such as acetate and triacetate; Hydrophobized thermoplastic hydrophobic chemical fiber; Granules made of superabsorbent polymer such as sodium acrylate copolymer; and any combination of two or more of these.

  In addition, the core wrap sheet has liquid permeability that allows liquid excretion such as body fluid discharged from the human body to permeate, and does not allow the absorbent core contained in the sheet to permeate. Although it will not specifically limit if it has this barrier property, For example, sheet-like fiber structures, such as a tissue, a nonwoven fabric, and a woven fabric, are mentioned.

  Other examples of the absorbent body that can be used in the absorbent article of the present invention include an absorbent sheet composed of absorbent fibers and / or absorbent polymers, and the thickness thereof is not particularly limited. It is preferable to be within the range of 3 to 5.0 mm. As such an absorptive sheet, if it is used for common absorptive articles, such as a sanitary napkin, it can be especially used without a restriction.

  In addition to the sanitary napkin of the embodiment described above, the present invention can be applied to various absorbent articles such as panty liners, diapers, or (light) incontinence pads. Such absorbent articles such as sanitary napkins, panty liners, diapers, or urine-absorbing pads are applied to the skin surface particularly sensitive to irritation. The effect to be enjoyed can be enjoyed more suitably.

Moreover, this invention is applicable also to a nonwoven fabric other than the above-mentioned absorbent article. The nonwoven fabric in this invention has the gel-like composition comprised by the said specific composition in at least one part of the area | region which can be directly contacted with the user's skin of this nonwoven fabric or the product using this nonwoven fabric.
The gel composition composed of the above-mentioned specific composition has an appropriate hardness and can exhibit an excellent emollient effect without causing stickiness due to the oil agent being easily released even under a light load. Therefore, the nonwoven fabric of the present invention having such a gel composition on the surface can provide a comfortable feeling of use, a feeling of wearing, and an emollient effect to the nonwoven fabric or a product using the nonwoven fabric.

  Even in such a non-woven fabric, the above-described gel-like composition has a form similar to the above-described sanitary napkin embodiment (that is, a cocoon or dot) in at least a part of the region that can be in direct contact with the user's skin. Shape). In addition, as a product using the said nonwoven fabric, a mask, wet tissue, etc. are mentioned, for example.

  Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples of the present invention. However, the present invention is not limited to such examples.

  When manufacturing the gel composition in the absorbent article of the Example of this invention and a comparative example, the following commercial items were used as various compounding components, respectively.

1) Styrenic thermoplastic elastomer (A1, A2)
a) Low molecular weight styrenic thermoplastic elastomer (A1)
・ Septon 8004 (styrene-ethylene-butylene-styrene block copolymer (SEBS) having a Mw of 110,000, manufactured by Kuraray Co., Ltd.)
b) Low molecular weight styrenic thermoplastic elastomer (A1 ′)
Clayton G1652 (styrene-ethylene-butylene-styrene block copolymer (SEBS) having a Mw of 80,000, manufactured by Kraton Polymer Co., Ltd.)

c) High molecular weight styrenic thermoplastic elastomer (A2)
Clayton G1654 (styrene-ethylene-butylene-styrene block copolymer (SEBS) having a Mw of 200,000, manufactured by Kraton Polymer Co., Ltd.)
-Septon 2005 (styrene-ethylene-propylene-styrene block copolymer (SEPS) having a Mw of 260,000, manufactured by Kuraray Co., Ltd.)

2) Oil
a) Aliphatic hydrocarbon oil (B)
Pearl Ream EX (hydrogenated polyisobutene with a kinematic viscosity at 37.8 ° C. of 10 mm ² / s, manufactured by NOF Corporation)
・ Pearl Ream 6 (hydrogenated polyisobutene having a kinematic viscosity at 37.8 ° C. of 20 mm ² / s, manufactured by NOF Corporation)
b) Aliphatic hydrocarbon oil (B ′)
Liquid paraffin (liquid paraffin with a kinematic viscosity at 37.8 ° C. of 75 mm ² / s, manufactured by MORESCO)

c) Fatty acid triglycerides (C)
・ Panasate 810S (Capric acid, fatty acid triglyceride of caprylic acid, manufactured by NOF Corporation)
・ Olive oil refined (Olive oil, manufactured by DSP Gokyo & Food Chemical Co., Ltd.)
・ Rapeseed birch oil (rapeseed oil, Showa Sangyo Co., Ltd.)

d) Other ester oil (C ')
-Sarasco 816T (cetyl 2-ethylhexanoate, manufactured by Nisshin Oillio Group, Inc.)

3) Other oil agents (D)
SH200-100cs (dimethylpolysiloxane having a kinematic viscosity at 25 ° C. of 100 mm ² / s, manufactured by Toray Dow Corning Co., Ltd.)

1. Production of gel composition
The above-mentioned various blending components were charged into separable flasks in the blending amounts shown in Table 1 below, and the contents were melted and mixed at 130 ° C. for 5 hours with stirring, then cooled, and the gel composition No. 1-1 to 1-9 and 2-1 to 2-6 were obtained. The characteristics of each gel composition obtained were evaluated by the following various test methods. In addition, it shows in Table 1 about the composition and physical property (weight average molecular weight and dispersion degree) of each gel-like composition, and shows in Table 2 about the evaluation result by various test methods.

2. Evaluation of gel composition
[Physical property test]
(1) Hardness Using the gel composition obtained as described above, a test piece made of a columnar gel having a diameter of 40 mm and a thickness of 8 mm was produced. Test force when this test piece is set on a small desktop tester EzTest (manufactured by Shimadzu Corporation) with a stainless steel compression jig having a diameter of 120 mm, and the test piece is compressed by 4 mm at a speed of 5 mm / min. (N) was measured. The measured value was evaluated according to the following criteria. The measurement results and evaluation results are shown in Table 2 below.
○: 10N or more and 40N or less ×: Less than 10N or more than 40N

○： 質量増加率（放出量）が２％以上１０％以下
×： 質量増加率（放出量）が２％未満又は１０％を超える (2) Release property A test piece made of a columnar gel having a diameter of 40 mm and a thickness of 8 mm was produced using the obtained gel composition. A commercially available tissue paper (a set of two sheets) whose mass (W ₁ ) has been measured in advance is placed on the upper surface of the prepared test piece, and a load of 10 g is applied from above the tissue paper to room temperature (23 ° C.). Then, the tissue paper was removed and its mass (W ₂ ) was measured. Then, based on the following formula (2), the mass increase of the tissue paper is calculated from the mass (W ₁ ) of the tissue paper measured in advance and the mass (W ₂ ) of the tissue paper measured after being left for 24 hours. The rate (%) was calculated, and the mass increase rate (%) was used as the released amount, and evaluated according to the following criteria. The measurement results and evaluation results are shown in Table 2 below.

○: Mass increase rate (release amount) is 2% or more and 10% or less ×: Mass increase rate (release amount) is less than 2% or more than 10%

3. Production of absorbent articles
The gel composition No. obtained as described above. By applying 1-1 to 1-9 and 2-1 to 2-6 on the skin side surface of the surface sheet of a commercially available sanitary napkin, a plurality of hooks extending in the longitudinal direction are applied. Absorbent articles (sanitary napkins) of Examples 1 to 9 and Comparative Examples 1 to 6 were obtained.

4). Evaluation of absorbent articles
[Sensory test]
After the absorbent articles of Examples 1 to 9 and Comparative Examples 1 to 6 obtained as described above were left overnight at 23 ° C., the skin side surface of the surface sheet in the absorbent article was left and right with fingers. The tactile sensation after 10 reciprocations was evaluated from the viewpoints of “softness” and “stickiness”. In addition, after the surface of the surface sheet on the skin side (that is, the surface coated with the gel-like composition) is attached to the back of the hand and left for 15 minutes, the condition of the skin is confirmed, and the “emollient effect” is evaluated. did. These evaluations were conducted by 10 subjects, and questionnaires were conducted according to the following evaluation criteria. The result of this questionnaire was evaluated by the total score of 10 people.
In the evaluation of the above-mentioned emollient effect, the emollient effect means to the subject that “the action of softening the skin by suppressing the transpiration of moisture from the skin by the action of the oily film”. I explained in advance.

(I) Softness 3 points: elastic, soft 2 points: elastic but hard 1 point: hard without elasticity or soft without elasticity

(Ii) Stickiness 3 points: Finger does not stick with oil 2 points: Finger sticks with oil 1 point: Finger does not get wet

(Iii) Emollient effect 3 points: Emollient effect is felt
2 points: Emollient effect is not felt very much 1 point: Emollient effect is not felt at all

The total score of each of the sensory tests (i) to (iii) was determined according to the following criteria. In addition, the total score and evaluation result of each sensory test are shown in Table 2 below (note that the numbers in parentheses in the table indicate the total score of each sensory test).
<Evaluation of total points>
◎: Total score is 26 points or more ○: Total score is 21 points or more and less than 26 points
Δ: Total score of 15 points or more and less than 21 points ×: Total score of less than 15 points

  As shown in Table 2, the absorbent articles of Examples 1 to 9 are gel-like composition Nos. Used. Good results were shown in all evaluations of physical properties tests 1-1 and sensory tests 1-1 to 1-9. In particular, for the absorbent article of Example 8, the gel composition No. used was used. 1-8 was excellent in the release | release property of an oil agent, and the high evaluation result was obtained about the emollient effect also in the sensory evaluation of an absorbent article. For the absorbent article of Example 9, the gel composition No. used was used. In spite of the small amount of fatty acid triglyceride (C) in 1-9, the oil agent was excellent in releasability, and a high evaluation result was obtained for the emollient effect in the sensory evaluation of the absorbent article.

On the other hand, the absorbent article of Comparative Example 1 has the gel composition No. used. Since 2-1 contained only a low molecular weight styrene thermoplastic elastomer (A1) as a styrene thermoplastic elastomer, the gel was hard and the softness and emollient effect were also included in the sensory evaluation of absorbent articles. Insufficient evaluation results were obtained.
In addition, the absorbent article of Comparative Example 2 is the gel composition No. used. In 2-2, since the viscosity of the aliphatic hydrocarbon oil (B) was outside the range of 5 to 50 mm ² / s and did not contain the fatty acid triglyceride (C), the hardness of the gel became hard, As a result, the amount released was too small, and in the sensory evaluation of the absorbent article, the gel was hard and the emollient effect was not felt.
The absorbent article of Comparative Example 3 has the gel composition No. used. In 2-3, the mass ratio of the low molecular weight styrene thermoplastic elastomer (A1) to the high molecular weight styrene thermoplastic elastomer (A2) is in the range of (A1) / (A2) = 95/5 to 50/50. As a result, the hardness of the gel was too soft, and in the sensory evaluation of the absorbent article, insufficient evaluation results were obtained for all of the softness, stickiness and emollient effect.
The absorbent article of Comparative Example 4 has the gel composition No. used. Since the weight average molecular weight of the low molecular weight styrenic thermoplastic elastomer mixture (A1 ′) in 2-4 was outside the range of 100,000 to less than 180,000, the gel hardness was too soft and the amount of oil released As a result, too much was found, and stickiness was also felt in the sensory evaluation of the absorbent article.
The absorbent article of Comparative Example 5 has the gel composition No. used. Since 2-5 contained an ester oil instead of the fatty acid triglyceride (C), the release of the oil was poor, and the emollient effect was not felt even in the sensory evaluation of the absorbent article.
Furthermore, the absorbent article of Comparative Example 6 was obtained by using the gel composition No. used. 2-6 did not contain fatty acid triglyceride (C) (that is, it contained no components other than styrenic thermoplastic elastomer mixture (A) and aliphatic hydrocarbon oil (B)), and release of oil agent The emollient effect was not felt in the sensory evaluation of the absorbent article.

DESCRIPTION OF SYMBOLS 1 Sanitary napkin 2 Surface sheet 3 Absorber 4 Side sheet 5 Embossed part 6 Gel-like composition

Claims (10)

A mask comprising a nonwoven fabric having a gel composition on the surface,
The gel composition has a weight average molecular weight of 100,000 or more and less than 180,000, and a styrenic thermoplastic elastomer (A1) composed of a block copolymer of triblock or more, and a weight average molecular weight of 180,000 or more and 300,000. And a styrenic thermoplastic elastomer (A2) comprising a block copolymer of triblock or higher in a mass ratio of (A1) / (A2) = 95/5 to 50/50 For 100 parts by mass of the plastic elastomer mixture (A),
500 to 4800 parts by mass of an aliphatic hydrocarbon oil (B) having a kinematic viscosity at 37.8 ° C. of 5 to 50 mm ² / s and a fatty acid triglyceride (C) having 8 to 22 carbon atoms which is liquid at 20 ° C. 60 to 1000 parts by mass ,
The fatty acid triglyceride (C) comprises a saturated fatty acid triglyceride (c1) having 8 to 12 carbon atoms and an unsaturated fatty acid triglyceride (c2) having 14 to 22 carbon atoms (c1) / (c2) = 95/5 The mask , which is contained at a mass ratio of 50/50 . The mask according to claim 1, wherein the block copolymer has two or more block components composed of styrene hard segments in a molecular chain. The mask according to claim 2, wherein at least both terminal block components in the molecular chain of the block copolymer are block components composed of the styrenic hard segment. The mask as described in any one of Claims 1-3 whose said aliphatic hydrocarbon oil (B) is hydrogenated polyisobutene. The mask as described in any one of Claims 1-4 with which the said gel-like composition is arrange | positioned at least one area | region of the said nonwoven fabric in the shape of a bowl or a dot by planar view. A wet tissue comprising a nonwoven fabric having a gel composition on its surface,
  The gel composition has a weight average molecular weight of 100,000 or more and less than 180,000, and a styrenic thermoplastic elastomer (A1) composed of a block copolymer of triblock or more, and a weight average molecular weight of 180,000 or more and 300,000. And a styrenic thermoplastic elastomer (A2) comprising a block copolymer of triblock or higher in a mass ratio of (A1) / (A2) = 95/5 to 50/50 For 100 parts by mass of the plastic elastomer mixture (A),
  Kinematic viscosity at 37.8 ° C. is 5 to 50 mm ² 500 to 4800 parts by mass of an aliphatic hydrocarbon oil (B) that is / s and 60 to 1000 parts by mass of a fatty acid triglyceride (C) having 8 to 22 carbon atoms that is liquid at 20 ° C.,
  The fatty acid triglyceride (C) comprises a saturated fatty acid triglyceride (c1) having 8 to 12 carbon atoms and an unsaturated fatty acid triglyceride (c2) having 14 to 22 carbon atoms (c1) / (c2) = 95/5 The wet tissue, which is contained at a mass ratio of 50/50. The wet tissue according to claim 6, wherein the block copolymer has two or more block components composed of styrenic hard segments in a molecular chain. The wet tissue according to claim 7, wherein at least both terminal block components in the molecular chain of the block copolymer are block components composed of the styrenic hard segment. The wet tissue according to any one of claims 6 to 8, wherein the aliphatic hydrocarbon oil (B) is hydrogenated polyisobutene. The wet tissue according to any one of claims 6 to 9, wherein the gel composition is disposed in at least a part of the non-woven fabric in a basket shape or a dot shape in plan view.

Images