JP2020176098A - Skin care sheet - Google Patents

Abstract

To provide a skin care sheet capable of securing a desired wearing time without inducing skin itches, and the like.SOLUTION: A skin care sheet 1 comprises a sheet member 2 formed of a non-woven fabric or a woven fabric and having an applied area and a non-applied area, and gel lotion 3 applied to the applied area. The gel lotion contains a hydrocarbon oil and a skin care agent. The sheet member has breathability and elasticity, and has a plurality of gel areas having the gel lotion and a non-gel area having no gel lotion, in the applied area. The skin care sheet is configured to be stretched and worn when worn on a wearer's skin.SELECTED DRAWING: Figure 1

Description

The present invention relates to a skin care sheet.

Skin care sheets used for skin care are known. The skin care sheet includes a sheet member and a skin care agent held on the sheet member. For example, Patent Document 1 has a base material made of a non-woven fabric or a woven fabric, a gel layer made of a gel, and an intermediate layer made of a part of the gel permeating the base material, and at least a gel. Disclosed is a sheet-like pack in which a cosmetic composition is held and configured, and a gel is applied to the face for use. Further, Patent Document 2 describes skin characterized in that a base in which a copolymer of styrene and a diene compound, a hydrocarbon, an ester having 10 to 25 carbon atoms, and a medicinal ingredient are mixed is applied to a release sheet. The patch is disclosed.

Patent No. 6193846 JP-A-2007-119405

The skin care sheet of Patent Document 1 uses a water-soluble gel as a skin care agent. Immediately after the skin care sheet is attached to the skin, the water-soluble gel begins to evaporate from the sheet member due to the body temperature of the skin. Therefore, the longer the wearing time, the more the water-soluble gel evaporates, and the efficiency of moisturizing the skin by the water-soluble gel may decrease.
The skin care sheet of Patent Document 2 uses an oil-based gel as a skin care agent. The oil-based gel does not easily evaporate from the sheet member due to the body temperature of the skin after the skin care sheet is attached to the skin, and can stay on the sheet member for a long time. However, since the oil-based gel is arranged on almost the entire surface of the skin contact surface of the sheet member, it easily closes the sweat glands of the skin, and even if the sweat is released from the sweat glands, there is little escape for the sweat. Therefore, the longer the wearing time, the more sweat accumulates between the oily gel and the skin, which may induce itching and stuffiness of the skin. In that case, the wearer has no choice but to remove the skin care sheet in a short time, and it may be difficult to secure a desired wearing time.

An object of the present invention is to provide a skin care sheet capable of securing a desired wearing time without inducing itching of the skin or the like.

The skin care sheet of the present invention is a skin care sheet comprising (1) a sheet member formed of a non-woven fabric or a woven fabric and having a coated region and a non-coated region, and a gel lotion coated on the coated region. The gel lotion contains a styrene-based elastomer, a hydrocarbon oil, and a skin care agent, the sheet member has breathability and elasticity, and a plurality of gel regions having the gel lotion in the coating region. A skin care sheet comprising, a non-gel region without the gel lotion, the skin care sheet being configured to be stretched and worn when worn on the wearer's skin.

In this skin care sheet, an oil-based gel lotion containing a predetermined component containing a skin care agent is used to apply a gel region having a gel lotion and a non-gel region not having a gel lotion to the application region of a breathable sheet member. Is forming.
Since this skin care sheet uses an oil-based gel lotion containing a skin care agent, the gel lotion can stay on the surface of the sheet member for a long time without evaporating, and is sustained-release. Can be continuously supplied to the skin. As a result, it is possible to prevent a decrease in the efficiency of moisturizing the skin even if the wearing time is lengthened.
At the same time, since the oily gel lotion is not arranged in the non-gel area at the time of wearing, the sweat glands of the skin facing the non-gel area (hereinafter, also referred to as “non-gel facing skin”) are covered with the gel lotion. Not. Therefore, the sweat released from the sweat glands can be released to the region between the non-gel region and the non-gel facing skin, and then escape to the outside through the non-gel region. At this time, since the skin care sheet is formed of a non-woven fabric or a woven fabric and has further elasticity, when it is stretched at the time of mounting, the distance between the fibers constituting the sheet member becomes large, and the air permeability becomes higher. Can be enhanced. Thereby, sweat can more easily escape to the outside through the non-gel area. On the other hand, since the oily gel lotion is arranged in the gel region, the sweat glands of the skin facing the gel region (hereinafter, also referred to as "gel-opposing skin") are covered with the gel lotion. However, since sweat can diffuse to some extent, for example, on the surface of the skin, it can easily reach the non-gel facing skin in the vicinity of the gel facing skin and escape to the outside through the non-gel region. As a result, even if the sweat glands of the gel-opposing skin are covered with the gel lotion, it is possible to suppress the accumulation of sweat between the gel lotion and the gel-opposing skin, which induces itching and stuffiness of the skin. Therefore, the wearer can continue to wear the skin care sheet for a desired time without removing it in a short time.
As a result, it is possible to provide a skin care sheet that can easily secure a desired wearing time without inducing itching of the skin.

The skin care sheet of the present invention may be the skin care sheet according to (1) above, wherein (2) the gel lotion further contains a styrene-based elastomer.
In this skin care sheet, since the gel lotion further contains a styrene-based elastomer, the sustained release property can be improved, and the skin care agent can be continuously and stably supplied to the skin. As a result, it is possible to prevent a decrease in the efficiency of moisturizing the skin even if the wearing time is lengthened.

In the skin care sheet of the present invention, (3) the air permeability of the coating region when the skin care sheet is stretched by 10% is 0.15 to 0.5 KPa · s / m, as described in (1) or (2) above. It may be the described skin care sheet.
In this skin care sheet, since the air permeability is 0.15 to 0.5 KPa · s / m as described above, the sweat released from the sweat glands of the skin can be more reliably released to the outside through the non-gel region. it can.

In the skin care sheet of the present invention, (4) the gel lotion in the plurality of gel regions protrudes outward from the surface of the sheet member to which the gel lotion is applied in the thickness direction of the sheet member. The skin care sheet according to any one of (1) to (3) above may be used.
In this skin care sheet, gel lotions in a plurality of gel regions protrude outward from the surface of the sheet member. Therefore, when the gel lotion of a plurality of gel regions comes into contact with the skin (gel facing skin), the sheet member of the non-gel region is lifted from the skin (non-gel facing skin) by the thickness of the protruding gel lotion, and the non-gel lotion is not. The area between the sheet member of the gel region and the skin (non-gel facing skin) can be expanded. Thereby, the sweat released from the sweat glands of the skin can be more efficiently released to the outside through the non-gel region.

In the skin care sheet of the present invention, (5) the gel lotion in the plurality of gel regions permeates inward in the thickness direction of the sheet member from the surface of the sheet member to which the gel lotion is applied. , The skin care sheet according to any one of (1) to (4) above.
In this skin care sheet, gel lotion in a plurality of gel regions permeates inward from the surface of the sheet member. Therefore, it can be said that the constituent fibers of the gel region are substantially fixed by the gel lotion. Therefore, when the skin care sheet is stretched when worn, the plurality of gel regions are relatively small and stretched relatively small due to the gel lotion being inhibited from stretching, and the non-gel regions are relatively large without being blocked by the gel lotion. Can be stretched. Therefore, as compared with the case where the sheet member in which the gel lotion is not present is stretched by the same amount, the gel region can be stretched less and the non-gel region can be stretched more. Thereby, the distance between the constituent fibers in the non-gel region can be increased, and the air permeability per unit area in the non-gel region can be further increased. Therefore, the sweat released from the sweat glands of the skin can be released to the outside more efficiently through the non-gel region.

In the skin care sheet of the present invention, (6) the gel lotion in the plurality of gel regions permeates from the surface of the sheet member to which the gel lotion is applied to the middle of the inside in the thickness direction of the sheet member. The skin care sheet described in (5) above may be used.
In this skin care sheet, gel lotion in a plurality of gel regions permeates from the surface of the sheet member to a position in the middle of the inside. Therefore, each constituent fiber of the gel region of the salvage is substantially fixed by the gel lotion on the portion on the surface side on which the gel lotion is applied (hereinafter, also referred to as “applied surface”) in the thickness direction, and the gel lotion is applied. The portion on the surface side to which is not coated (hereinafter, also referred to as “non-coated surface”) is not fixed. Therefore, when the skin care sheet is stretched at the time of wearing, in the thickness direction, the entire non-applied surface side portion can be stretched, and the non-gel region can be stretched at the coated surface side portion, but the gel region is a gel lotion. This makes it difficult to stretch. Therefore, the degree of elongation (however, the non-gel region) becomes high in the portion on the coated surface side, the distance between the constituent fibers becomes large, and the fiber density becomes low. On the other hand, the degree of elongation is not so high in the portion on the non-coated surface side, the distance between the constituent fibers is not so large, and therefore the fiber density is not so low. That is, in the non-gel region, the fiber density increases from the coated surface to the non-coated surface in the thickness direction of the sheet member. As a result, even if the sweat that has reached the non-gel region of the coated surface becomes liquid, it can move from the coated surface to the non-coated surface due to the gradient of the fiber density, and it comes into contact with the air outside the non-coated surface. It can be easily evaporated. Therefore, the sweat released from the sweat glands of the skin can be more efficiently released to the outside through the non-gel region.

In the skin care sheet of the present invention, (7) the plurality of gel regions can be visually recognized from the surface side of the sheet member opposite to the surface of the sheet member to which the gel lotion is applied. ) Or the skin care sheet according to (6).
In this skin care sheet, since the gel lotion of a plurality of gel regions permeates inward from one surface of the sheet member, the transparency of the sheet member differs between the plurality of gel regions and the non-gel region. Therefore, a plurality of gel regions can be visually recognized from the other surface side of the sheet member. Thereby, the skin care sheet can be placed at an appropriate position on the skin. As a result, the skin care sheet can be stably held on the skin while ensuring breathability in the non-gel region.

In the skin care sheet of the present invention, (8) each of the plurality of gel regions is arranged in a plan view in an island shape or a line shape so as to be separated from each other in the above (1) to (7). ) May be the skin care sheet according to any one of the items.
In this skin care sheet, the gel regions are arranged apart from each other in an island shape or a line shape, whereby the non-gel region surrounds a part or all of each gel region. Therefore, the sweat released from the gel-opposed skin can be easily reached by the non-gel-opposed skin that is close to the skin so as to diffuse on the skin and surround the gel-opposing skin, and easily escape to the outside through the non-gel region. Can be done. As a result, even if the sweat glands of the gel-opposing skin are covered with the gel lotion, it is possible to further suppress the accumulation of sweat between the gel lotion and the gel-opposing skin, which induces itching and stuffiness of the skin.

The skin care sheet of the present invention is (9) any one of (1) to (8) above, wherein the ratio of the area of the plurality of gel regions to the area of the sheet member is 30 to 95% in a plan view. It may be the skin care sheet described in.
In this skin care sheet, the ratio of the area of the gel region is 30 to 95% as described above. Therefore, it is possible to appropriately balance the adhesion of the sheet member to the skin by the gel lotion of the plurality of gel regions and the securing of breathability by the non-gel regions. As a result, the skin care sheet can be stably held on the skin while ensuring breathability in the non-gel region.

The skin care sheet of the present invention is (10) the skin care sheet is a face skin care sheet, and the face skin care sheet has at least one opening in the sheet member and is located in a peripheral area of the at least one opening. The skin care sheet according to any one of (1) to (9) above, wherein the basis weight of the gel lotion per unit area is larger than the basis weight of the gel lotion per unit area in an area other than the peripheral area. , May be.
In this skin care sheet, the basis weight of the gel lotion in the area around the opening is relatively increased. Therefore, it is possible to increase the adhesiveness of the peripheral region of the opening where the sheet member easily comes off from the skin. As a result, the skin care sheet can be stably held on the skin while ensuring breathability in the non-gel region.

According to the present invention, it is possible to provide a skin care sheet capable of securing a desired wearing time without inducing itching of the skin or the like.

It is a front view which shows the structural example of the face mask which concerns on embodiment. It is a partial cross-sectional view and a partial back view which shows the structural example of the face mask which concerns on embodiment. It is a schematic diagram which shows the wearing state of the face mask which concerns on embodiment. It is a schematic diagram which shows the movement of sweat at the time of wearing the face mask which concerns on embodiment. It is a schematic diagram which shows the expansion and contraction state at the time of wearing the face mask which concerns on embodiment. It is a front view which shows the other structural example of the face mask which concerns on embodiment. It is a partial cross-sectional view and a partial rear view which shows the other structural example of the face mask which concerns on embodiment.

Hereinafter, the skin care sheet according to the embodiment of the present invention will be described by taking a face mask (hereinafter, also simply referred to as “face mask”) for the face (pack) as an example. However, the present invention is not limited to this example, and can be applied to various skin care sheets without departing from the subject matter of the present invention. Examples of skin care sheets include not only the entire face but also facial parts (example: eyes, nose, mouth) and body parts (example: arms, hands, abdomen, neck, chest, décolletage, feet). Be done.

1 and 2 are schematic views showing a configuration example of the face mask 1 according to the embodiment. 1 is a front view showing a configuration example of the face mask 1, FIG. 2 (b) is a partial rear view of the face mask 1 of FIG. 1, and FIG. 2 (a) is IIa-IIa of FIG. 2 (b). It is a partial cross-sectional view along the line. The face mask 1 has a vertical direction L, a horizontal direction W, and a thickness direction T that are orthogonal to each other. Looking at the face mask 1 placed on a plane from vertically above the plane in the thickness direction T is called "planar view", and the shape grasped in the plane view is called "planar shape", and the vertical direction L and the horizontal direction are L. Any direction in the plane including the direction W is called "in-plane direction". The “skin side” and the “non-skin side” mean the sides relatively close to and far from the skin surface of the wearer in the thickness direction T of the face mask 1 when the face mask 1 is worn.

The face mask 1 includes a sheet member 2 and a gel lotion 3 applied to the sheet member 2. Gel lotion 3 contains a skin care agent that contributes to skin care.

The sheet member 2 has a first surface S1 which is one surface and a second surface S2 which is the other surface opposite to the first surface S1. The first surface S1 is a surface coated with the gel lotion 3. The second surface S2 is a surface to which the gel lotion 3 has not been applied. In the present embodiment, the shape of the sheet member 2 is not particularly limited as long as it can cover the face of the user, and a known face mask shape can be used. Alternatively, the shape of the sheet member 2 may be, for example, a shape in which a three-dimensional face is developed into a two-dimensional plane, an elliptical shape, or a rectangular shape with rounded corners. A plurality of openings 4a to 4d are formed in the sheet member 2. The two openings 4a and 4a are formed at the positions of the right eye and the left eye, respectively, the openings 4b are formed at the positions of the nostrils as cuts, the openings 4c are formed at the positions of the mouth, and the two openings 4d and 4d are formed. It is formed at the positions of the right and left ears. Regarding the shape of the sheet member 2 and the positions and shapes of the plurality of openings 4a to 4d, the average face shape and the shape of the ears, eyes, nose, and mouth of a person assumed to be a user of the face mask 1 It can be appropriately designed based on the position and position. Further, at least one of the plurality of openings 4a to 4d may be omitted as appropriate.

The sheet member 2 has a coated area A _T and a non-coated area A _U. The application area _AT is an area where the gel lotion 3 is applied while facing the skin to be skin-care when the face mask 1 is worn. In the present embodiment, the application area _AT is, as shown in FIG. 1, a region of the central portion of the face in the lateral direction W in the sheet member 2, that is, between the outer edge of the right cheek and the outer edge of the left cheek. It is an area that covers the part of. The non-applied area A _U is an area facing the skin that is not subject to skin care when the face mask 1 is worn and the gel lotion 3 is not applied, and therefore is an area other than the applied area A _T in the sheet member 2. In the present embodiment, the non-coated area A _U is, as shown in FIG. 1, a region of both ends of the face in the sheet member 2, that is, a region that generally covers the peripheral portions of the right ear and the left ear, and the coated region A It is a region on both outer sides of _{T in} the lateral direction W. The non-coating region A _U may be a non-application area A _U of substantially zero-area (0). The area of the coating area _AT is, for example, 30 to 95% of the area of the sheet member 2, preferably 50 to 90%. If the area is too small, skin care will be inefficient, and if it is too large, it will be difficult to handle.

The sheet member 2 is made of a non-woven fabric or a woven fabric. The material of the woven fabric or the non-woven fabric is not particularly limited, and examples thereof include chemical fibers, but natural fibers may also be used. Examples of the chemical fiber include thermoplastic resin fibers. The thermoplastic resin fiber is not particularly limited as long as it is a fiber containing a thermoplastic resin. Examples of the thermoplastic resin include olefin resins such as potiethylene (PE), polypropylene (PP) and ethylene-vinyl acetate copolymer (EVA), and polyesters such as polyethylene terephthalate (PET) and polylactic acid (PLA). Known resins such as resins and polyamide resins such as 6-nylon can be mentioned. These resins may be used alone or in combination of two or more kinds of resins. The structure of the fiber made of such a thermoplastic resin is not particularly limited, and for example, a composite fiber such as a single fiber, a core-sheath type fiber, a side-by-side type fiber, and an island / sea type fiber; a hollow type. Fibers; Flat, Y-shaped, C-shaped and other irregular cross-sectional fibers; Latent crimped or overt crimped three-dimensional crimped fibers; .. The fibers having these structures may be used alone or in combination of two or more kinds of fibers. These thermoplastic resin fibers can be hydrophilic or hydrophobic and may be hydrophilized by a hydrophilizing agent. In the present embodiment, as the hydrophobic fiber, PE / PP core-sheath type composite fiber and PE / PET core-sheath type composite fiber are mixed and used in a predetermined ratio (example: 85-65: 15-35). Examples of natural fibers include cellulosic fibers. The cellulosic fiber is not particularly limited as long as it is a fiber containing cellulose, for example, a natural cellulose fiber such as cotton, a regenerated cellulose fiber such as rayon, a purified cellulose fiber such as pulp fiber, and a semi-synthetic fiber such as acetate fiber. Cellulose fibers can be mentioned.

The method for forming the non-woven fabric is not particularly limited, and a method such as a card method, a spunbond method, a melt blown method, or an airlaid method can be used. Further, a method of bonding and entwining the constituent fibers of the web formed by these methods by a method such as an air-through method, a thermal bonding method, a needle punching method, a chemical bonding method, or a spunlace method can be mentioned.

The fineness of the sheet member 2 is not particularly limited, and examples thereof include 0.8 to 15 dtex. The fiber length of the constituent fibers of the sheet member 2 is not particularly limited, and examples thereof include 5 to 100 mm. The basis weight of the sheet member 2 is not particularly limited, and examples thereof include 10 to 200 g / m ² . The thickness of the sheet member 2 is not particularly limited, and examples thereof include 0.1 to 5 mm.

The seat member 2 has elasticity and breathability.
As the elasticity, for example, the maximum point elongation in the transport direction MD at the time of manufacturing the sheet member 2 is 110 to 180%, and the maximum point elongation in the transverse direction CD is 150 to 350%. Further, for example, the maximum point strength in the transport direction MD at the time of manufacturing the sheet member 2 is 20 to 100 N / 50 mm, and the maximum point strength in the transverse direction CD is 100 to 200 N / 50 mm. In the present embodiment, assuming that the sheet member 2 is extended in the lateral direction W and used, the transverse direction CD at the time of manufacturing the sheet member 2 is set to be the lateral direction W at the time of manufacturing the sheet member 2. The face mask 1 is formed.
In terms of breathability, when the sheet member 2 is stretched by 10% in a state where the gel lotion 3 is applied (described later), the area where the gel lotion 3 is not applied (non-gel area _BU : The air permeability of (described later) is, for example, 0.05 to 0.15 KPa · s / m. A region gel lotion 3 is applied: the air permeability of (gel region B _G below) include, for example 0.5~0.7KPa · s / m. The air permeability of the region (application region _AT : described later) in which the region where the gel lotion 3 is applied (gel region B _G ) and the region where the gel lotion 3 is not applied (non-gel region B _U ) coexist is, for example, 0.15. ~ 0.5 KPa · s / m can be mentioned.

FIG. 3 is a schematic view showing a wearing state of the face mask 1 according to the embodiment. The user P of the face mask 1 puts the sheet member 2 on the face while extending mainly in the lateral direction W so that the first surface S1 coated with the gel lotion 3 faces the skin, and puts the sheet member 2 on the right ear and the left. The face mask 1 is attached to the face by inserting the ears into the two openings 4d and 4d, respectively.

The gel lotion 3 is applied to the application area _AT of the sheet member 2. In the present embodiment, the gel lotion 3 is a region facing the skin to be skin-care on the first surface S1 of the sheet member 2 which is the application region _AT, that is, the region of the central portion of the face, that is, substantially right. It is applied to the area covering the part between the outer edge of the cheek and the outer edge of the left cheek.

As shown in FIG. 2, the sheet member 2 has a plurality of gel regions B _G having a gel lotion 3 and a non-gel region B _U having no gel lotion 3 in the coating region A _T. .. That is, gel lotion 3, each of the plurality of gel regions B _G in the application area A _T of the sheet member 2, is applied in the planar shape of each of the plurality of gel regions B _G, the non-gel region B in the coating region A _T It is arranged so that it is not applied to _U. However, skin care agent of the gel lotion 3, by gel region B _G is in contact with the skin, is supplied to the skin from the gel region B _G. Then, in addition, the skin care agent diffuses from the gel region B _G to the seat member 2 in the plane direction, reaches the non-gel region B _U, may be supplied to the skin from there directly or indirectly.

In the present embodiment, each of the plurality of gel regions B _G is a plan view, the island (island) shaped or line (line) form in the coating region A _T, are spaced apart from each other. The non-gel region B _U is formed so as to surround each of the plurality of gel regions B _G in the coating region A _T in a plan view. Ungelled region B _U is a plan view, for each of a plurality of gel regions B _G, surrounds in contact with part or all of the outer peripheral edge of each gel region B _G, in terms of breathability, all It is preferable to enclose it so as to be in contact with. Here, the island-shaped shape is not particularly limited, and examples thereof include a circular shape, an elliptical shape, a square shape, a rectangular shape, a polygonal shape, a heart shape, a flower shape, a leaf shape, or a combination thereof. The line-shaped shape has a predetermined width, and examples thereof include straight lines, curves, wavy lines, or combinations thereof that extend continuously or intermittently in a predetermined direction. Each of the shapes of a plurality of gel regions B _G may be identical to one another, and can be partly or entirely different from each other, may be mixed and the island shape and the line shape. The shape, its size (area), combination, and the like are appropriately set in consideration of the functions required for the gel lotion 3 of the face mask 1 and the impression that the user remembers.

In each of a plurality of gel regions B _G, nearest the mutual spacing of the gel region B _G (shortest distance) is, for example 0.2~10mm the like, preferably include 0.4～5Mm, more preferably Is 0.8 to 2 mm. Mutual spacing of the second proximity gel region B _G (shortest distance) is, for example 0.4~20mm the like, preferably include 0.8～10Mm, more preferably include 1 to 8 mm. If the interval is too narrow, it becomes difficult enhance breathability of the region (non-gel region B _U) between each of the plurality of gel regions B _G, the spacing is too wide, skin care benefits due to gel lotion 3 is lowered.

Each area of the plurality of gel regions B _G, for example 1mm ² ~9cm ² and the like, preferably 4mm ² ~4cm ^2, more preferably 9 mm ² 1 cm ^2. If the area is too small, skin care benefits due to gel lotion 3 is lowered, the area is too large, it becomes difficult enhance breathability of the region (non-gel region B _U) between each of the plurality of gel regions B _G.

Each of the plurality of gel regions B _G is the gel region B _G is any of the first direction: the (illustrative longitudinal direction L) at a first distance (without pauses or intervals) aligned in rows, Moreover, each row may be arranged side by side with a second interval in the second direction (example: lateral direction W) perpendicular to the first direction. Examples of such an arrangement include a checkered pattern (checkered pattern) and a striped pattern when the gel region _BG has the same shape. Examples of the first interval and the second interval include 0.2 mm to 2 cm, preferably 0.4 mm to 1 cm, and more preferably 0.8 mm to 1 cm. If the interval is too narrow, it becomes difficult enhance breathability of the region (non-gel region B _U) between each of the plurality of gel regions B _G, the spacing is too wide, skin care benefits due to gel lotion 3 is lowered.

Incidentally, in plan view, a portion of the plurality of gel regions B _G are connected to each other, may be grouped plurality of gel regions B _G, correspondingly, non-gelling areas B _U is divided into a plurality of regions May be good. The non-gel region B _U is not only surrounded so as to be in contact with all of the outer peripheral edges of each gel region B _{G in} a plan view, but is also so as to be in contact with a part of the outer peripheral edge of each gel region B _{G. G} may be partially enclosed. Incidentally interval shall measure the shortest distance, if the shape of the gel region B _G can not determine the mutual distance such irregular shapes, etc., the gel region B _G, approximates a circle having the same area centered on its center of gravity.

In the present embodiment, each of the plurality of gel regions B _G is a plan view, are disposed apart from each other in a checkered pattern in the coating region A _T. In that case, the gel region B _G is substantially square (illustrated: one side is 3 to 10 mm) was recently corners between the square contact of the gel region B _G a slight distance from one another (illustrated: 0.8 to 2 mm) spaced apart doing. Thereby, it is possible to properly and skin care benefits due to gel lotion 3, the balance between the breathable area between each of the plurality of gel regions B _G (non-gel region B _U).

In the present embodiment, the ratio R1 of the area of the plurality of gel regions _{BG to} the area of the coating region A _T of the sheet member 2 in a plan view is not particularly limited, and the functions required for the gel lotion 3 of the face mask 1 and the like are not particularly limited. It is set appropriately according to. The ratio R1 is, for example, 30 to 80%, preferably 35 to 70%. Correspond to those, the ratio of the area of the non-gel region B _U to the area of application area A _T of the sheet member 2 R2, for example 70 to 20% can be mentioned, preferably 65 to 30%. And R1 is lower (R2 is large), the function of the gel lotion 3 in the gel region B _G hardly exhibited, and R1 is large (R2 is small), the non-gel region B _U hardly breathable sweat decreases ..

In the present embodiment, the basis weight of the gel lotion 3 is not particularly limited, and is appropriately set according to the functions required for the gel lotion 3 of the face mask 1. The basis weight of the gel lotion 3, for example 50 to 500 g / m ² can be mentioned, 100 to 400 g / m ² is preferred. If the basis weight is too small, it is difficult to exert the function of the gel lotion 3 in the gel region B _G , and if the basis weight is too large, the non-gel region B _U becomes small and it becomes difficult to ventilate sweat. The thickness d _M of the gel lotion 3 is, for example, 0.1 to 6 mm, preferably 0.2 to 4 mm. If the thickness is thin, it is difficult to exert the skin care effect for a long time, and if the thickness is thick, the gel lotion 3 is too much and stickiness or the like may occur.

In this embodiment, the gel lotion 3 in the plurality of gel regions B _G, from the first surface S1 of the sheet member 2 which gel lotion 3 is applied, to protrude outward in the thickness direction T of the sheet member 2. That is, the gel lotion 3 includes a protruding portion 3a protruding outward in the thickness direction T from the first surface S1 of the sheet member 2. The thickness d _K > 0 of the protrusion 3a. When the face mask 1 is attached to the face, the protruding portion 3a can form a slight gap between the first surface S1 of the sheet member 2 and the skin of the face. The size of the thickness d _K includes, for example, 0.05 to 3 mm, preferably 0.1 to 2 mm, under the condition that the thickness d _M of the sheet member 2 or less. Alternatively, the ratio of the thickness d _K to the thickness d _M of the sheet member 2 is 20 to 90%, preferably 30 to 80%. Too thin a (too small), the ventilation of the sweat in a non-gel region B _U becomes difficult. Too thick a (too high), the ventilation of the sweat in a non-gel region B _U's easy, gel lotion 3 becomes difficult also in contact with the skin by diffusion through the sheet member 2 in the non-gel region B _U ..

In this embodiment, the gel lotion 3 Multiple gel region B _G from the first surface S1 of the sheet member 2 which gel lotion 3 is applied to penetrate the inside of the thickness direction T of the sheet member 2, preferably Penetrates halfway inside the thickness direction T of the sheet member 2. Therefore, the gel lotion 3 includes a penetrating portion 3b that has penetrated inward in the thickness direction T from the first surface S1 of the sheet member 2. The thickness d _L > 0 of the penetrating portion 3b. When increasing the thickness d _L, penetration portion 3b, when the face mask 1 is to mounted on the face while being stretched, the fibers constituting the gel region B _G fixed gel region B _G, the gel region B _G without significant expansion and contraction constituent fibers, constituent fibers of the non-gel region B _U may be more elastic. On the other hand, when the thickness d _L is reduced, a difference in fiber density of the constituent fibers may occur between the portion of the sheet member 2 on the first surface S1 side and the portion on the second surface S2 side. The size of the thickness d _L is, for example, 0.05 to 4 mm, preferably 0.1 to 2 mm, under the condition that the thickness of the sheet member 2 is d _M or less. Alternatively, the ratio of the thickness d _L to the thickness d _M of the sheet member 2 is 10 to 80%, preferably 20 to 70%. Too thin (too small) and makes the skin care agent of the gel lotion 3 difficult to diffuse into the non-gel region B _U in the sheet member 2, supplying a skin care agent from the non-gel region B _U skin facing the non-gelling areas B _U It becomes difficult, and if it is too thick (too large), it tends to leak to the second surface S2 side of the sheet member 2.

In the present embodiment, the sheet member 2, since the gel lotion 3 in a plurality of the gel region B _G is penetrated inward of the seat member 2, from the difference in light reflectance or light transmittance between areas, gel lotion 3 from the side of the second surface S2 opposite to the first surface S1 of the sheet member 2 which has been applied is, a plurality of the gel region B _G are visible.

In the present embodiment, the face mask 1 has at least one opening in the sheet member 2. The basis weight of gel lotion 3 per unit area in the peripheral region of the at least one opening is larger than the basis weight of gel lotion 3 per unit area in the region other than the peripheral region. In particular, in the present embodiment, the face mask 1 has a plurality of openings 4a to 4d in the sheet member 2. The basis weight of the gel lotion 3 per unit area in each of the peripheral regions of the plurality of openings 4a to 4d is larger than the basis weight of the gel lotion 3 per unit area in the regions other than the peripheral regions.

Gel lotion 3 contains a gelling agent and a lotion. The gelling agent is a component for retaining the lotion, and in this embodiment, contains a styrene-based elastomer. Lotions contain hydrocarbon oils and skin care agents.

In gel lotion 3, a certain amount of lotion (hydrocarbon oil, skin care agent) continuously bleeds on the surface of the gel lotion. Therefore, the gel lotion 3 can continuously release the skin care agent on the surface of the gel lotion 3. That is, the gel lotion 3 has a sustained release property with respect to the skin care agent. Therefore, even if the skin care agent is released to the wearer's skin and lost from the surface of the gel lotion 3, a new skin care agent can be supplied from the inside of the gel lotion 3 to the surface of the gel lotion 3, and the skin care agent can be applied to the wearer. Can continue to be released to the skin. Thereby, the skin care agent can act on the skin of the wearer's face that faces the seat member 2 and is in direct or indirect contact with the seat member 2 for a long time. Therefore, it is possible to prevent a decrease in the efficiency of moisturizing the skin even if the wearing time is lengthened.

The effect of the face mask 1 (skin care sheet) will be described.
FIG. 4 schematically shows the movement of sweat when the face mask according to the embodiment is worn. In the face mask 1 (skin care sheet) of the present embodiment, an oily gel lotion 3 having a predetermined component containing a skin care agent is used, and a gel having the gel lotion 3 is applied to the coating area _AT of the breathable sheet member 2. Region B _G and non-gel region B _U without gel lotion 3 are formed.
In this face mask 1, since the gel lotion 3 is oily, it can stay on the surface of the sheet member 2 for a long time without evaporating from the sheet member 2 of the sheet member 2, and since it is a sustained release property, it is a skin care agent. Can be continuously supplied to the skin. As a result, it is possible to prevent a decrease in the efficiency of moisturizing the skin even if the wearing time is lengthened.
At the same time, as shown in FIG. 4, the skin at the time of mounting, the non-gelling areas B _U for the unplaced gel lotion 3 oil, among skin 50S of the wearer 50, facing the non-gel region B _U (Hereinafter, also referred to as "non-gel facing skin".) The sweat gland 62 of 50SU is not covered with gel lotion 3. Accordingly, sweat 64 emitted from the sweat gland 62 is released in the area V between the non-gel region B _U and the non-gel opposing skin 50SU, then can escape to the outside through the non-gel region B _U .. At this time, since the face mask 1 is formed of a non-woven fabric (or woven fabric) and has further elasticity, when it is stretched at the time of mounting, the distance between the fibers constituting the sheet member becomes large, and the face mask 1 is ventilated. You can improve your sex. Thereby, sweat 64 can escape more easily to the outside through the non-gel region B _U. Meanwhile, since the gel region B _G are arranged Gel Lotion 3 oily skin facing the gel region B _G (hereinafter, also referred to as "gel opposing skin".) Sweat glands 61 50SG is covered with gel lotion 3 ing. However, it sweats 63 has, for example, the surface of the skin 50SG some extent can spread, thereby readily accessible to the non-gel opposing skin 50SU proximate the gel facing skin 50SG, to escape to the outside through the non-gel region B _U Can be done. As a result, even if the sweat glands 61 of the gel-opposing skin 50SG are covered with the gel lotion 3, sweat can be prevented from accumulating between the gel lotion 3 and the gel-opposing skin 50SG, and the itching and stuffiness of the skin can be suppressed. Therefore, the wearer can continue to wear the face mask 1 for a desired time without removing it in a short time.
As a result, it is possible to provide the face mask 1 capable of easily securing a desired wearing time without inducing itching of the skin or the like.

In a preferred embodiment of the present embodiment, the air permeability of the coating area _AT at 10% elongation of the skin care sheet is 0.15 to 0.5 KPa · s / m. Therefore, it can be transmitted to the outside through a more reliable non-gelling areas B _U sweat emitted from the skin of the sweat glands.

In a preferred aspect of this embodiment, the gel lotion 3 Multiple gel region B _G from the first surface S1 is a surface of the sheet member 2 and protrudes outward in the thickness direction T of the sheet member 2. Therefore, when the gel lotion of the plurality of gel regions B _G comes into contact with the skin (gel facing skin) 50 SG, the sheet member 2 of the non-gel region B _U is exposed to the skin (non-gel) by the thickness of the gel lotion 3 protruding. lifting from the opposing skin) 50SU, can be expanded region V between the non-gel region B _U of the sheet member 2 and the skin (non-gel opposing skin) 50SU. Thereby, the sweat emitted from the skin sweat gland can escape to the outside through the more efficient non-gelling areas B _U.

In a preferred aspect of this embodiment, the gel lotion 3 Multiple gel region B _G from the first surface S1 is a surface of the sheet member 2, it has penetrated the interior of the thickness direction T of the sheet member 2. Therefore, constituent fibers of the gel region B _G, a region with no gel lotion 3, that is, compared to non-gel region B _U, by gel lotion 3 has easily move, that is, that are substantially fixed. Therefore, when the face mask 1 is stretched when worn, the plurality of gel regions B _G, is inhibited stretched gel lotion 3 extends relatively small, non-gel region B _U elongation gel lotion 3 It can be extended relatively large without being hindered. Therefore, as compared with the case where the sheet member in which the gel lotion 3 does not exist is stretched by the same amount, the gel region B _G can be stretched less and the non-gel region B _U can be stretched more greatly. Thereby, the distance between the fibers constituting the non-gel region B _U can be further increased, it is possible to further enhance the breathability per unit area of the non-gel region B _U. Therefore, the sweat released from the sweat glands of the skin can be released to the outside more efficiently through the non-gel region.

FIG. 5 is a schematic view showing a stretched state when the face mask 1 according to the embodiment is worn. However, FIG. 5A shows a state before the sheet member 2 of the face mask 1 is stretched, and FIG. 5B shows a state when the sheet member 2 of the face mask 1 is stretched. In a preferred aspect of this embodiment, has penetrated from the first surface S1 Gel Lotion 3 of the plurality of gel regions B _G is the surface of the sheet member 2, until the inside of the middle of the thickness direction T of the sheet member 2 .. For example, the ratio of the thickness d _L of the penetrating portion 3b to the gel lotion 3 thickness d _M is 30 to 60%. In other words, the gel lotion 3 gel region B _G is the thickness direction T of the sheet member 2 does not penetrate. Therefore, constituent fibers of the gel region B _G, in the thickness direction T, the portion of the first surface S1 (application surface) side gel lotion 3 is coated surface is substantially fixed by gel lotion 3, gel lotion 3 The portion on the second surface S2 (non-coated surface) side, which is the surface on which is not coated, is not fixed. Therefore, as shown in FIG. 5, when the sheet member 2 of the face mask 1 is stretched at the time of mounting, the entire sheet member 2 can be stretched in the portion on the second surface S2 (non-coated surface) side in the thickness direction T. Although the portion of the first surface S1 (coating surface) side non-gelling areas B _U can be extended, the gel region B _G has become hardly extended by gel lotion 3. Therefore, the non-gelling areas B _U, at the portion of the first surface S1 side high degree of elongation, the distance between the constituent fibers is increased, thus it fiber density is low, the elongation in the portion of the second surface S2 side The degree is not very high, the distance between the constituent fibers is not very large, and therefore the fiber density is not very low. That is, in the non-gel region B _U, in the thickness direction T of the sheet member 2, the fiber density increases from the first surface S1 toward the second surface S2.

Specifically, as schematically shown in FIG. 5 (a), the first surface S1, the width e2, e4 of the gel region B _G arranged in the lateral direction W, the width e1 of the non-gel region B _U, It is assumed that e3 and e5 are all equal to each other. That is, e2 = e4 = e1 = e3 = e5. Then, the second surface S2, and the width f2, f4 of the region corresponding to the gel area arranged in the horizontal direction W on the first surface S1 B _G (width e2, e4), non-gelling areas B _U (width e1, The widths f1, f3, and f5 of the regions corresponding to e3 and e5) are all equal to each other and equal to e2, e4, e1, e3, and e5. That is, f2 = f4 = f1 = f3 = f5 = e2 = e4 = e1 = e3 = e5. However, the boundary in the thickness direction T between the gel region B _G and the non-gel region B _U and the region corresponding to the gel region B _G and the region corresponding to the non-gel region B _U is half of the sheet member 2. The position of the thickness of. Then, as shown schematically in FIG. 5 (b), when stretched sheet member 2 in the lateral direction W, the first surface S1, the width e2, e4 of the gel region B _G arranged in the lateral direction W is width E2 (> e2), extends E4 (> e4), the width e1 of the non-gel region B _U, e3, e5 width E1 (> e1), E3 ( > e3), E5 (> e5) becomes and, , In general, (E2 = E4) <(E1 = E3 = E5). On the other hand, the second surface S2, the width of the region corresponding to the lateral direction W in aligned gel region B _G (width e2, e4) in the first surface S1 f2, f4 width F2 (> f2), F4 ( > f4 extends), a non-gel area B _U (width e1, e3, the width of the region corresponding to e5) f1, f3, f5 width F1 (> f1), F3 ( > f3), F5 (> f5) , and the In addition, F2 = F4 = F1 = F3 = F5. From these relationships, (E2 = E4) <(F2 = F4 = F1 = F3 = F5) <(E1 = E3 = E5). Therefore, the sheet member 2 has a width E1 = E3 = E5 and a region, i.e. the width of the non-gel region B _U of the first surface S1 extends to the most wide. Then, the sheet member 2 has a width of F2 = F4 = F1 = F3 = F5 and a region, extending i.e. such that the width of the non-gel region B _U and gel region B _G of the second surface is then widened. Then, the sheet member 2 has a width of a region to be E2 = E4, that is, the width of the gel region B _G of the first surface S1 extends so as not most widely. Here, the magnitude relation of the width between the regions generally corresponds to the magnitude relation of the fiber density between the regions. For example, if the width of one region is greater than the width of the other region, the fiber density of one region is greater than the fiber density of the other region. Therefore, than the fiber density of the non-gel region B _U of the first surface S1, the fiber density of the non-gel region B _U and gel region B _G of the second surface increases. Thereby, even sweat reaching the non-gel region B _U of the first surface S1 has become liquid, the gradient of the fiber density, can migrate from the first surface S1 to the second surface S2, a second surface It can easily evaporate by touching the air outside S2. Therefore, the sweat released from the sweat glands of the skin can be more efficiently released to the outside through the non-gel region.

In a preferred aspect of this embodiment, since the gel lotion 3 Multiple gel region B _G is permeated from the first surface S1 which is one surface of the sheet member 2 inwardly, transparency of the sheet member 2 is more Differences between gel region B _G and non-gel region B _U. Therefore, from the second surface S2 side which is the other surface of the sheet member 2, it can be visually recognized more gel region B _G. As a result, when the face mask 1 is attached to the skin, the face mask 1 is placed at an appropriate position while the first surface S1 coated with the gel lotion 3 is on the skin side and the second surface S2 is viewed with a mirror or the like. be able to. Thereby, while ensuring air permeability in a non-gel region B _U, the face mask 1 can be held stably on the skin.

In a preferred aspect of this embodiment, each of the plurality of gel regions B _G is a plan view, the island-shaped or line-shaped on the coating region A _T, and spaced apart from each other, non-gelling areas B _U is applied area It is formed so as to surround each of the plurality of gel regions B _G to a _T. Therefore, sweat released from the gel opposing skin 50SG, for example diffused on the skin 50S easily be reached by a non-gel opposing skin 50SU adjacent to enclose the gel facing skin 50SG and, via a non-gel region B _U It can be easily escaped to the outside. As a result, even if the sweat glands 61 of the gel-opposing skin 50SG are covered with the gel lotion 3, sweat can be accumulated between the gel lotion 3 and the gel-opposing skin 50SG, and itching and stuffiness of the skin can be further suppressed. ..

In a preferred aspect of this embodiment, in plan view, the ratio of the area of a plurality of gel regions B _G to the area of the sheet member 2 is 30 to 95%. Therefore, it is possible to appropriately balance the adhesive, and the securing of breathability due to the non-gel region B _U, of the plurality of gel region B _G of the sheet member 2 by gel lotion 3 skin. Thereby, while ensuring air permeability in a non-gel region B _U, the face mask 1 can be held stably on the skin.

In a preferred embodiment of the present embodiment, in the face mask 1, the basis weight of the gel lotion 3 in the peripheral region in at least one of the openings 4a to 4d is larger than the basis weight of the gel lotion 3 in the region other than the peripheral region. It is increasing. Therefore, it is possible to increase the adhesiveness of the peripheral region of the opening where the sheet member 2 easily comes off from the skin. Thereby, while ensuring air permeability in a non-gel region B _U, the face mask 1 can be held stably on the skin.

The gel lotion 3 can be produced without particular limitation. For example, a gelling agent is added to a heated lotion and mixed to produce a coating liquid, and the coating liquid is applied to a sheet member 2 to which the gel lotion 3 is to be applied to the face mask 1. Gel lotion 3 can be produced.

If desired, the gel lotion 3 can be applied to the sheet member 2 as a coating liquid containing a volatile solvent such as an alcohol solvent, an ester solvent, or an aromatic solvent. Since the coating liquid contains a volatile solvent, the viscosity of the coating liquid is lowered, so that the coating process can be simplified, such as easy coating and no need for heating at the time of coating.

The method for applying the coating liquid is not particularly limited, and the coating liquid can be heated as needed and applied by, for example, a non-contact coater or a contact coater. Examples of the non-contact coater include a spiral coater, a curtain coater, a spray coater, and a dip coater. Examples of the contact type coater include a slot coater and a pattern coater.

Next, the details of the gel lotion 3 will be described.

The styrene-based elastomer preferably has a hard segment and a soft segment. As the hard segment, a polystyrene block is preferable, and as a soft segment, a polyolefin block is preferable.

Polystyrene blocks include, for example, blocks made of styrene homopolymers (ie, polystyrene blocks), blocks made of α-methylstyrene homopolymers (ie, poly-α-methylstyrene blocks), and styrene and α-methylstyrene. Includes blocks consisting of copolymers with. Examples of the polyolefin block include a block made of a homopolymer of polyolefin and a block made of a copolymer of polyolefin. Examples of blocks made of polyolefin homopolymers include polyethylene blocks, polypropylene blocks, polybutylene blocks, and polybutadiene blocks. Examples of the block made of a copolymer of polyolefin include a block made of a copolymer of ethylene, propylene, butylene and butadiene. In this specification, butadiene is also treated as an olefin-based monomer for convenience. Soft segments also include hydrogen adducts of polybutadiene blocks, as well as blocks of butadiene and copolymers of ethylene, propylene, butylene and butadiene.

The styrene-based elastomer preferably has hard segments at both ends and one or more soft segments between them. Specific examples of the styrene-based elastomer include styrene-butadiene-styrene block copolymer (SBS), styrene-isobutylene-styrene block copolymer (SIBS), styrene-isoprene-styrene block copolymer (SIS), and the like. Styrene-ethylene-propylene block copolymer (SEP), styrene-ethylene-propylene-styrene block copolymer (SEPS), styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-ethylene-ethylene-propylene Examples thereof include a styrene block copolymer (SEEPS) and a combination of two or more of these.

The styrene-based elastomer preferably has a weight average molecular weight of 5,000 to 500,000, more preferably 10,000 to 400,000, and even more preferably 50,000 to 300,000. When the weight average molecular weight is less than 5,000, it tends to be difficult for the styrene-based elastomer to maintain the gel structure, and when the weight average molecular weight exceeds 500,000, the wearing feeling tends to be deteriorated. The method for measuring the weight average molecular weight will be described later.

The styrene-based elastomer preferably contains 10 to 50% by mass of polystyrene block and 50 to 90% by mass of polyolefin block, more preferably 15 to 40% by mass of polystyrene block and 60 to 85% by mass of polyolefin block. And is included. The styrene-based elastomer further preferably contains 18 to 35% by mass of polystyrene blocks and 65 to 82% by mass of polyolefin blocks. If the amount of the polystyrene block is less than 10% by mass, it tends to be difficult for the polystyrene block to form the microlayer separation structure described later. When the amount of polystyrene blocks exceeds 50% by mass, the amount of polyolefin blocks that can hold lotion tends to be small, and thus the amount of lotion that can be held tends to be small. In addition, the amount of the polystyrene block microlayer separated structure increases, the gel lotion formed becomes hard, and the fit tends to be inferior.

The reason why the styrene-based elastomer produces a gel lotion is as follows. The hard segments of the styrene-based elastomer aggregate with each other to form a domain and act as a cross-linking point. On the other hand, the soft segment acts as a network connecting these cross-linking points. As a result, the styrene-based elastomer functions as an elastic body.

When the styrene-based elastomer is mixed with the lotion, the soft segments of the styrene-based elastomer retain the lotion, while the hard segments remain domain-formed. As a result, the mixture of the styrene-based elastomer and the lotion (gel lotion) functions as an elastic body having a lower compressive stress than the styrene-based elastomer alone. The lotion is only retained in the loose mesh of the soft segments of the styrene-based elastomer and can move to the surface of the gel lotion.

The lotion contains hydrocarbon oil. As used herein, "hydrocarbon oil" means a compound consisting of carbon and hydrogen. Examples of the hydrocarbon oil include chain hydrocarbons and cyclic hydrocarbons. Examples of chain hydrocarbons include paraffinic hydrocarbons (not including double and triple bonds; alkenes), olefin hydrocarbons (including one double bond; alkenes), and acetylene hydrocarbons (triple bonds). Alkenes) and hydrocarbons containing two or more bonds selected from the group consisting of double and triple bonds. Examples of the cyclic hydrocarbon include aromatic hydrocarbons and alicyclic hydrocarbons. As the hydrocarbon oil, chain hydrocarbons and alicyclic hydrocarbons are preferable, chain hydrocarbons are more preferable, and paraffin-based hydrocarbons, olefin-based hydrocarbons, and hydrocarbons containing two or more double bonds (triple bonds). Is more preferable, and paraffinic hydrocarbons are even more preferable. However, chain hydrocarbons include linear hydrocarbons and branched chain hydrocarbons.

The hydrocarbon oil preferably has a kinematic viscosity of 0.01-80 mm ² / s at 40 ° C. and preferably has a weight average molecular weight of less than 1,000. This is because the lotion can contribute to the action of bleeding on the surface of the gel lotion 3. Further, the hydrocarbon oil may contain a hydrocarbon oil used as a skin adhesiveness imparting agent. The hydrocarbon oil as a skin adhesiveness-imparting agent preferably has a kinematic viscosity of 80 to 400 mm ² / s at 40 ° C. The hydrocarbon oil as the skin adhesiveness-imparting agent is preferably 20 to 80% by mass of the hydrocarbon oil. If it is less than 20% by mass, it becomes difficult to adhere to the skin, and if it exceeds 80% by mass, it becomes difficult to form a gel.

Lotions include skin care agents. The skin care agent is not particularly limited as long as it can be used for skin care (example: emollient effect), and a known agent can be used. Examples of skin care agents include fatty acid esters, fatty acids, fatty alcohols, and combinations thereof. Specifically, tri (caprylic acid / capric acid) glycerin, Examples thereof include oleic acid, icosenoic acid and docosanol. Examples of substances containing these agents include olive oil, macadamia nut (seed) oil, jojoba (seed) oil, and camellia oil.

The lotion preferably contains 50-90% by weight of hydrocarbon oil and 50-10% by weight of skin care agent, more preferably 55-85% by weight of hydrocarbon oil and 45-15% by weight of skin care. Contains the agent. The lotion further preferably contains 60-80% by weight of hydrocarbon oil and 40-20% by weight of skin care agent. When the amount of the hydrocarbon oil exceeds 90% by mass, that is, the amount of the skin care agent is less than 10% by mass, the amount of the skin care agent adhering to the skin tends to decrease. If the amount of the hydrocarbon oil is less than 50% by mass, that is, the amount of the skin care agent is 50% by mass or more, the strength of the gel is lowered and it tends to be difficult to form the gel.

The gel lotion 3 may be mixed with, for example, silicone oil in addition to the gelling agent and lotion. By adding silicone oil, the smoothness of the gel lotion 3 can be improved.

The gel lotion 3 preferably has a static friction coefficient of 0.01 to 1.00, more preferably 0.02 to 0.50, and even more preferably 0.03 to 0.03. This is from the viewpoint of resistance to skin irritation of the wearer. In order to make the static friction coefficient within the above range, the gel lotion 3 preferably contains, for example, an antifriction agent with respect to 100 parts by mass of the gel lotion (the total of the gelling agent and the lotion is 100 parts by mass). It is contained in an amount of 01 to 20 parts by mass, more preferably 0.05 to 10 parts by mass, still more preferably 0.1 to 7 parts by mass.

The gel lotion 3 can further contain, as a lotion, other components known as lotions in the art, in addition to the hydrocarbon oils and skin care agents described above.

Other ingredients include, for example, vitamins such as natural or synthetic vitamins, or water-soluble or fat-soluble vitamins. Examples of water-soluble vitamins include B vitamins, such as B vitamins ₁ , vitamin B ₂ , vitamin B ₃ , vitamin B ₅ , vitamin B ₆ , vitamin B ₇ , vitamin B ₉ , vitamin B _{12, and the} like. Can be mentioned. Examples of fat-soluble vitamins include vitamin A group, vitamin D group, vitamin E group, vitamin K group and the like. Vitamins also include their derivatives. Still other components include, for example, amino acids such as alanine, arginine, lysine, histidine, proline and hydroxyproline, as well as peptides. Still other components include, for example, cholesterol, hyaluronic acid, lecithin, ceramide and the like.

Examples of other components include zeolites, and examples of zeolites include natural zeolites and synthetic zeolites. Examples of natural zeolites include analcime, rheulandite, heulandite, natrolite, stilbite, and somosonite.

Examples of other components include drugs, and examples of the drug include skin astringents, anti-acne agents, anti-wrinkle agents, anti-cellulite agents, whitening agents, antibacterial agents, antifungal agents and the like.
Among them, examples of the skin astringent include oil-soluble skin astringents such as zinc oxide, aluminum sulfate, tannic acid, and oil-soluble polyphenols. Examples of oil-soluble polyphenols include natural oil-soluble polyphenols. Natural oil-soluble polyphenols include, for example, Oobaku extract, Otogirisou extract, Odorikosou extract, Chamomile extract, Gobo extract, Salvia extract, Shinanoki extract, Seiyoubodaiju extract, Shirakaba extract, Sugina extract, Sage extract, Salvia extract, Teuchigurumi extract, Hibiscus. Examples thereof include extracts, biwa leaf extracts, bodaiju extracts, hop extracts, marronnier extracts, and yokunin extracts. Examples of the anti-acne agent include salicylic acid, benzoyl peroxide, resorcinol, sulfur, erythromycin, zinc and the like. Examples of the anti-wrinkle agent include lactic acid, salicylic acid, salicylic acid derivative, glycolic acid, phytic acid, lipoic acid, and lysophosphatidic acid. Examples of the anti-cellulite agent include xanthine compounds such as aminophylline, caffeine, theophylline and theobromine. Examples of the whitening agent include niacinamide, kojic acid, arbutin, glucosamine and derivatives, phytosterol derivatives, ascorbic acid and its derivatives, and quail extracts and placenta extracts.

In addition, examples of other components include anti-inflammatory components, pH adjusters, antibacterial agents, moisturizers, fragrances, for example, aroma oils, pigments, dyes, pigments, plant extracts and the like. Examples of the anti-inflammatory component include naturally occurring anti-inflammatory agents such as button, ogong, otogirisou, chamomile, licorice, momonoha, yomogi, perilla extract, and synthetic anti-inflammatory agents such as allantoin and dipotassium glycyrrhizinate. .. Examples of the pH adjuster include those for keeping the skin weakly acidic, such as malic acid, succinic acid, citric acid, tartaric acid, and lactic acid. Examples of the pigment include titanium oxide. In addition, mineral oil can be mentioned as another component.

In the present specification, the "weight average molecular weight" is simply a compound of a polydisperse system (example: a compound produced by sequential polymerization, an ester produced from a plurality of fatty acids and a plurality of aliphatic monohydric alcohols). first compound: is a concept including (illustrative and one fatty acid, one ester formed from an aliphatic monohydric alcohol), N _i number of molecules of molecular weight M _i (i = 1, or i = 1,2 , ...) In a system consisting of), it means M _w obtained by the following equation: M _w = ΣN _i M _i ² / ΣN _i M _i .

The gel lotion 3 contains 100 parts by mass of the gelling agent and the lotion, preferably 2 to 40 parts by mass of the gelling agent, and 98 to 60 parts by mass of the lotion, more preferably 5 to 30 parts by mass. , 95-70 parts by mass of lotion, more preferably 10-25 parts by mass of gelling agent and 90-75 parts by mass of lotion. If the ratio of the gelling agent is less than 2 parts by mass, the formed gel lotion 3 may be difficult to act as an elastic body, or may be deformed beyond the elastic limit of the gel lotion 3 when pressure is applied. is there. When the ratio of the gelling agent exceeds 40 parts by mass, the elasticity of the formed gel lotion 3 is high, and the wearing feeling may be inferior.

In conventional lotion coatings, skin care agents and the like, when fixing active ingredients in a predetermined place, a method of increasing the viscosity (viscosification) of the active ingredients is adopted. However, when they are made highly viscous, active ingredients (emollients, etc.) are trapped inside lotion coatings, skin care agents, etc., and it becomes difficult to exert their functions. In addition, conventional lotion coatings, skin care agents, etc. are merely viscous substances, and when pressure is applied by wearing them, they are not fixed in place, but move inside the seat member and continue to act on the wearer's skin. Has a difficult problem. On the other hand, the above-mentioned gel lotion 3 exhibits behavior as an elastic body within a range in which a body-mounted pressure or the like is applied. Therefore, even if pressure is applied to the gel lotion 3, it is only elastically deformed and is not pushed between the constituent fibers of the sheet member 2 and elastically recovers when the pressure is lowered, and the original position (near the first surface S1). ) Return. Therefore, the lotion contained in the gel lotion 3 can perform its action at a desired position.

The gel lotion may contain other components as long as it does not interfere with the above-mentioned effects. Examples of other components include antioxidants such as BHT (2,6-di-t-butyl-p-cresol) and BHA (butylylated hydroxyanisole).

The configuration of the face mask is not limited to the example of FIG. FIG. 6 is a front view showing another configuration example of the face mask 1a according to the embodiment. 7 (b) is a partial rear view of the face mask 1 of FIG. 6, and FIG. 7 (a) is a partial cross-sectional view taken along the line VIIa-VIIa of FIG. 7 (b). Face mask 1a in Figure 6, the application area in that a plurality of gel regions B _G are arranged in stripes in A _T, in Figure 1, a plurality of gel regions B _G are arranged in a checkered pattern face Different from mask 1. The differences will be mainly described below.

In the coating region A _T of the face mask 1a, each of the plurality of gel regions B _G extends continuously or intermittently in the coating region A _T in the vertical direction L and is spaced in the horizontal direction W in a plan view. They are arranged side by side. Then, each of the plurality of non-gel regions B _U is arranged in the coating region A _T so as to extend continuously or intermittently in the longitudinal direction L between the gel regions B _G adjacent to each other in a plan view. There is. The non-gel region B _U and the gel region B _G are arranged at the intermittent locations of the gel region B _G and the non-gel region B _U , respectively. In this case, the plurality of non-gel regions B _U are formed so that adjacent non-gel regions B _U surround the gel region B _G from both sides in the lateral direction W. However, the width (transverse direction W dimension) d _W1 gel region B _G, for example, 1 to 30 mm can be mentioned, preferably include 2 to 20 mm, more preferably it includes 3 to 10 mm. The width of the non-gel region B _U (lateral direction W dimension) d _W2, for example, 0.2 to 10 mm can be mentioned, preferably include 0.4～5Mm, more preferably include 0.8~2mm Be done.

The face mask 1a shown in FIGS. 6 and 7 can also have the same effect as the face mask 1 shown in FIGS. 1 to 5. In the face mask 1a, in plan view, in the coating area A _T, the ratio of the area of a plurality of gel regions B _G is, since relatively larger than the ratio of the plurality of non-gelling areas B _U, skincare Can be more continuously supplied to the skin, and thus it is possible to further suppress a decrease in the efficiency of moisturizing the skin even if the wearing time is lengthened.

In addition, in this specification, various values shall be measured by the following methods.

(Weight average molecular weight)
The weight average molecular weight means a polystyrene-equivalent value determined by gel permeation chromatography (GPC). Examples of the GPC measurement conditions include the following conditions. The model is Hitachi High-Technologies Corporation: High Performance Liquid Chromatogram Lachrom Elite. The columns are SHODEX KF-801, KF-803 and KF-804 manufactured by Showa Denko KK. The eluent is THF, the flow rate is 1.0 mL / min, the driving volume is 100 μL, and the detection is RI (Differential Refractometer).

(Basis weight, thickness and fiber density of sheet members)
The method for measuring the basis weight of the sheet member is as follows. A sheet member is cut into a size of 5 cm × 5 cm to prepare a sample, and the mass is measured after a drying treatment in an atmosphere of 100 ° C. or higher. Divide the measured mass by the area of the sample to calculate the basis weight of the sample. The value obtained by averaging the basis weights of 10 samples is defined as the basis weight of the sheet member.
The method for measuring the thickness of the sheet member is as follows. Using a thickness gauge equipped with a 15 cm ² stylus (model FS-60DS manufactured by Daiei Kagaku Seiki Seisakusho Co., Ltd.), the thickness of the sheet member is measured under the condition of a measuring load of 3 g / cm ² . The thickness of three places is measured with one sample, and the average value of the thicknesses of the three places is taken as the thickness of the sheet member.

(Measurement method of air permeability and elasticity)
As a method for measuring the air permeability (ventilation resistance) of the sheet member, it is measured with a KES air permeability tester (manufactured by Kato Tech Co., Ltd .; product number KES-F8-AP1). This tester measures the pressure loss of the test piece (the pressure difference from the atmospheric pressure due to the resistance of the test piece at a constant flow rate of 4 cm ³ / cm ² · s in the standard measurement) with a pressure sensor, and "ventilation resistance (kPa).・ S / m) ”is output. However, the air permeability when the face mask 1 is extended is measured by extending a part of a predetermined sheet member 2 as a sample piece.
As a method for measuring the elasticity of the sheet member, it shall be measured by a constant speed extension type tensile tester (JIS L 1913: based on a general non-woven fabric test method). However, in the elasticity of the face mask 1, a part of the predetermined sheet member 2 is measured as a sample piece.

(Measurement method of kinematic viscosity)
The kinematic viscosity is measured at a test temperature of 40 ° C. using a Canon Fenceke backflow viscometer according to “5. Kinematic viscosity test method” of JIS K 2283: 2000.

(Measuring method of gel lotion basis weight)
The method for measuring the basis weight of the gel lotion 3 is as follows.
(1) A sample is obtained by cutting out the measurement range (not including the non-skin contact area) of the sheet member 2 coated with the gel lotion 3 with a sharp blade, for example, a replacement blade of a cutter.
(2) Measure the area of the sample: S (m ² ) and the mass: M ₀ (g).
(3) The sample is stirred in a solvent in which gel lotion 3 is soluble, for example, an aromatic solvent, for example, xylene, for at least 3 minutes, and the gel lotion is dissolved in the solvent.
(4) The sample is filtered on a filter paper whose mass has been measured, and the sample is thoroughly washed with a solvent on the filter paper. The sample on the filter paper is dried in an oven at 100 ° C.
(5) The mass of the filter paper and the sample is measured, and the mass of the filter paper is subtracted from the mass of the filter paper to calculate the mass of the sample after drying: M ₁ (g).
(6) The basis weight G _BW (g / m ² ) of gel lotion 3 is calculated by the following formula:
G _BW (g / m ² ) = [M ₀ (g) -M ₁ (g)] / S (m ² )
Calculated by In order to reduce the error, a plurality of samples are collected from a plurality of face masks so that the total area of the samples exceeds 100 cm ² , the experiment is repeated a plurality of times, and the average value thereof is adopted.

Hereinafter, examples of the present invention will be described, but the present invention is not limited to these examples.

1. 1. Blending ingredients of gel lotion In producing the gel lotion in the face mask of the example, the following commercially available products were used as various blending ingredients.
(1) Styrene-based elastomer (a) Low molecular weight styrene-based elastomer ・ PIONIER GEL 12 PAO (weight average molecular weight: about 100,000, styrene-isoprene-styrene block copolymer (SIS), manufactured by Hansen & Rosanthal KG)
(B) High molecular weight styrene-based elastomer-Kraton G1654 (weight average molecular weight: about 200,000, styrene-ethylene-butylene-styrene block copolymer (SEBS), manufactured by Kraton Polymers)
(2) Hydrocarbon oil-Pearl Ream 6 (kinematic viscosity at 37.8 ° C: 20 mm ² / s, hydrogenated polyisobutene, manufactured by NOF CORPORATION)
・ Pearl Dream 18 (kinematic viscosity at 37.8 ° C: 300 mm ² / s, hydrogenated polyisobutene, manufactured by NOF CORPORATION)
(3) Skin care agent-Panasate 810S (kinematic viscosity at 40.0 ° C: 13 mm ² / s, glycerin fatty acid ester, manufactured by NOF CORPORATION)
-Olive oil (viscosity at 20 ° C: 107 mPa · s, representative ingredient is oleic acid, manufactured by DSP Gokyo Food & Chemical Co., Ltd.)
・ Macadamia nut oil (viscosity at 20 ° C: 35 mPa · s, representative ingredient is oleic acid, manufactured by Nikko Chemical Co., Ltd.)
-Jojoba oil (viscosity at 25 ° C: 40 mPa · s, representative ingredient is oleic acid, manufactured by Maruzen Chemicals Co., Ltd.)
(4) Others (a) Silicone oil-SH200-100cs (dimethylpolysiloxane with kinematic viscosity at 25 ° C of 100 mm ² / s, manufactured by Toray Dow Corning Co., Ltd.)

2. Production of gel lotion The above-mentioned various compounding ingredients are placed in a separable flask having each composition shown in Table 1 below, and the contents are melt-mixed at 140 ° C. for 5 hours while stirring, and then cooled to prepare a gel lotion sample. I got 1.

3. 3. Evaluation method of gel lotion The produced gel lotion was evaluated by the following method regarding the amount and composition of oil transferred to the skin. In addition, the sensitivity evaluation regarding itch was evaluated by the following method.
(1) Method of measuring the amount of oil transferred to the skin The method of measuring the amount of oil transferred to the skin of the gel lotion is as follows.
(I) From the sheet member to which the gel lotion produced in the above "2. Production of gel lotion" is applied to the entire surface, a sample is obtained by cutting out a range of 4 cm x 4 cm with a sharp blade, for example, a replacement blade of a cutter. .. Prepare multiple samples.
(Ii) Mass of each sample: M _T0 (g) is measured.
(Iii) Each sample is allowed to stand on a 5 cm × 5 cm medicine wrapping paper for a predetermined time (example: 15, 30, 90, 180, 300 minutes) so that the gel lotion faces the medicine wrapping paper.
(Iv) The mass of each sample after the gel lotion oil is transferred to the medicine wrapping paper: _MT1 (g) is measured.
(V) For each sample, the transfer amount of gel lotion G _TW (g / m ² ) is calculated by the following formula:
G _TW (g / m ² ) = [M _T0 (g) -M _T1 (g)] / (0.04 x 0.04) (m ² )
Calculated by Experiment multiple times (example: 5 times) and adopt the average value of them.
(2) Method for identifying the oil component that transfers to the skin The method for measuring the oil component of the gel lotion that transfers to the skin is as follows.
(I) Perform (i) to (iii) of the above "method for measuring the amount of oil transferred to the skin".
(Ii) Each medicine wrapping paper to which the oil of the gel lotion has been transferred corresponding to each sample is put into a screw tube. Then, in each screw tube, each medicine wrapping paper is immersed in 1 mL of deuterated chloroform for 15 minutes to extract the oil.
And (iii) identification of oil in each of the heavy chloroform by H ¹ -NMR.
(3) Sensitivity evaluation of itching The method of sensitivity evaluation of itching is as follows.
(I) The face mask shown in FIGS. 1 and 2 to which the gel lotion produced in the above "2. Production of gel lotion" is applied is produced.
(Ii) A plurality of subjects were asked to wear face masks, and the presence or absence of itching after a predetermined time (example: 15, 30, 90, 180, 300 minutes) was evaluated according to the following criteria, and the average was calculated.
〇: No itch, △: Itching but not worrisome, ×: Itching
4. Evaluation results of gel lotion The evaluation results of the amount of oil transferred to the skin, the components of the oil transferred to the skin, and the sensitivity evaluation results of itching are shown in Table 2 below.

It was confirmed that the oil (skin care agent) was continuously transferred to the medicine wrapping paper that imitated the skin. Then, it was confirmed that the oil continued to be released even after 300 minutes (5 hours). It was also confirmed that the skin care agents Panaceto 810S, olive oil, jojoba oil, and macadamia nut oil were released as oils. In addition, as a sensitivity evaluation, it was confirmed that itching was not felt even after 300 minutes (5 hours).

In the above embodiment, the styrene-based elastomer PIONIER GEL 12 PAO (oil absorption-oriented type; low molecular weight elastomer), Clayton G1654 (stretchability-oriented type; high molecular weight elastomer), and palm reel 6 (hydrocarbon oil) are used. Is forming a gel. Pearl Dream 18 (hydrocarbon oil) acts as a skin tackifier. SH200-100cs (silicone oil) acts as a smoothing agent. Panaceto 810S, olive oil, macadamia nut oil, and jojoba oil are skin care agents, classified into fatty acids and fatty acid esters, and have polarity (oxygen) in their molecular structures. Therefore, these skin care agents have different compatibility with the palm reel 6. Therefore, the palm reel 6 forms a gel with a styrene-based elastomer, and these skin care agents easily bleed out to the surface of the gel and can be efficiently transferred to the skin.

The skin care sheet of the present invention is not limited to the face mask 1 of each of the above-described embodiments, and can be appropriately combined or changed within a range that does not deviate from the object and purpose of the present invention, and other types. Applicable to skin care sheets.

1 Face mask (skin care sheet)
2 Sheet member 3 Gel lotion

Claims (10)

A skin care sheet comprising a sheet member formed of a non-woven fabric or a woven fabric and having a coated region and a non-coated region, and a gel lotion coated on the coated region.
The gel lotion contains a hydrocarbon oil and a skin care agent.
The sheet member
Breathable and stretchable,
The coating region has a plurality of gel regions having the gel lotion and a non-gel region having no gel lotion.
The skin care sheet is configured to be stretched and worn when worn on the wearer's skin.
Skin care sheet. The gel lotion further contains a styrene-based elastomer.
The skin care sheet according to claim 1. The air permeability of the coating area when the skin care sheet is stretched by 10% is 0.15 to 0.5 KPa · s / m.
The skin care sheet according to claim 1 or 2. The gel lotion in the plurality of gel regions projects outward from the surface of the sheet member to which the gel lotion is applied in the thickness direction of the sheet member.
The skin care sheet according to any one of claims 1 to 3. The gel lotion in the plurality of gel regions permeates inward in the thickness direction of the sheet member from the surface of the sheet member to which the gel lotion is applied.
The skin care sheet according to any one of claims 1 to 4. The gel lotion in the plurality of gel regions permeates from the surface of the sheet member to which the gel lotion is applied to the middle of the inside in the thickness direction of the sheet member.
The skin care sheet according to claim 5. In the sheet member, the plurality of gel regions can be visually recognized from the surface side opposite to the surface of the sheet member to which the gel lotion is applied.
The skin care sheet according to claim 5 or 6. Each of the plurality of gel regions is arranged apart from each other in an island shape or a line shape in the coating region in a plan view.
The skin care sheet according to any one of claims 1 to 7. In a plan view, the ratio of the area of the plurality of gel regions to the area of the sheet member is 30 to 95%.
The skin care sheet according to any one of claims 1 to 8. The skin care sheet is a face mask and
The face mask has at least one opening in the sheet member.
The basis weight of the gel lotion per unit area in the peripheral region of the at least one opening is larger than the basis weight of the gel lotion per unit area in the region other than the peripheral region.
The skin care sheet according to any one of claims 1 to 9.

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