KR20220002886A - skin care sheet - Google Patents

Abstract

Provided is a skin care sheet that can secure a desired installation time without causing itching of the skin. The skin care sheet 1 is formed of a nonwoven fabric or a woven fabric, and includes a sheet member 2 having an application region and a non-application region, and a gel lotion 3 applied to the application region. Gel lotion contains hydrocarbon oil and skin care agent. The sheet member has air permeability and elasticity, and has, in the application region, a plurality of gel regions with gel lotion and non-gel regions without gel lotion. The skin care sheet is configured to be mounted while being stretched when mounted on the wearer's skin.

Description

skin care sheet

The present invention relates to a skin care sheet.

A skin care sheet used for skin care is known. The skin care sheet includes a sheet member and a skin care agent held by the sheet member. For example, in Patent Document 1, a substrate made of a nonwoven fabric or woven fabric, a gel layer composed of a gel, and an intermediate layer composed of a part of the gel permeating the substrate, and at least a cosmetic composition is maintained in the gel, and the gel is affixed to the face A sheet-like pack for use is disclosed. In addition, Patent Document 2 discloses a skin patch characterized in that a base containing a copolymer of styrene and a diene compound, a hydrocarbon, an ester having 10 to 25 carbon atoms, and a pharmaceutical ingredient is applied to a release sheet.

Patent Document 1: Japanese Patent No. 6193846 Patent Document 2: Japanese Patent Laid-Open No. 2007-119405

In the skin care sheet of Patent Document 1, a water-soluble gel is used as a skin care agent. The water-soluble gel starts to evaporate from the sheet member by the body temperature of the skin immediately after the skin care sheet is attached to the skin. Therefore, if the wearing time is prolonged, the evaporation of the water-soluble gel will surely proceed, and there is a fear that the efficiency of moisturizing the skin by the water-soluble gel may decrease.

In the skin care sheet of Patent Document 2, an oily gel is used as a skin care agent. The oily gel hardly evaporates from the sheet member even by the body temperature of the skin after the skin care sheet is attached to the skin, so that it can stay on the sheet member for a long time. However, since the oily gel is disposed almost on the entire surface of the skin-contacting surface of the sheet member, the sweat glands of the skin are easily blocked, and even if sweat is released from the sweat glands, there are few places where the sweat escapes. Therefore, if the wearing time is prolonged, there is a risk that sweat will certainly build up between the oily gel and the skin, causing itching or burning of the skin. In that case, the wearer has no choice but to remove the skin care sheet in a short time, and there is a fear that it may become difficult to secure a desired wearing time.

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

The skin care sheet of the present invention is a skin care sheet comprising (1) a sheet member formed of a nonwoven fabric or woven fabric, the sheet member having an application region and a non-application region, and a gel lotion applied to the application region, the gel lotion comprising: , a styrenic elastomer, a hydrocarbon oil, and a skin care agent, wherein the sheet member has breathability and elasticity, and in the application region, a plurality of gel regions having the gel lotion, and no gel lotion It has a non-gel area, and the skin care sheet is a skin care sheet configured to be mounted while being stretched when mounted on a wearer's skin.

In the present skin care sheet, a gel area with gel lotion and a non-gel area without gel lotion are formed in the application area of the sheet member having air permeability by using an oily gel lotion having a predetermined component including a skin care agent. are doing

In this skin care sheet, since an oily gel lotion containing a skin care agent is used, the gel lotion can stay on the surface for a long time without evaporating from the sheet member, and because it is a sustained release, the skin care agent is continuously applied. can be supplied to the skin. Thereby, even if the wearing time is lengthened, it can suppress that the efficiency which moisturizes skin falls.

In addition, since no oily gel lotion is disposed on the non-gel area during wearing, the sweat glands of the skin (hereinafter also referred to as "non-gel-facing skin") facing the non-gel area are not covered with the gel lotion. Accordingly, sweat released from the sweat glands can be discharged 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 nonwoven fabric or a woven fabric and further has elasticity, when it is stretched during installation, the distance between the fibers constituting the sheet member becomes large, and air permeability can be further improved. Thereby, sweat can more easily escape to the outside through the non-gel region. On the other hand, since an oily gel lotion is disposed in the gel region, the sweat glands of the skin (hereinafter also referred to as "gel-facing skin") facing the gel region are covered with the gel lotion. However, since sweat, for example, can diffuse to some extent on the surface of the skin, it can easily reach the non-gel-facing skin close to the gel-facing skin, and can escape out through the non-gel area. Thereby, even if the sweat glands of the gel-facing skin are covered with the gel lotion, it is possible to suppress that sweat builds up between the gel lotion and the gel-facing skin, thereby causing itching or dryness of the skin. Therefore, the wearer can continue to put it on for a desired period of time without removing the skin care sheet in a short time.

Thereby, it is possible to provide a skin care sheet that can easily secure a desired wearing time without causing skin itchiness or the like.

The skin care sheet of the present invention (2) may be the skin care sheet according to (1), wherein the gel lotion further contains a styrenic elastomer.

In this skin care sheet, since the gel lotion further contains a styrenic elastomer, sustained release properties can be improved, and the skin care agent can be continuously and stably supplied to the skin. Thereby, even if the wearing time is lengthened, it can suppress that the efficiency which moisturizes skin falls.

The skin care sheet of the present invention may be (3) the skin care sheet according to the above (1) or (2), wherein the air permeability of the application area at 10% elongation of the skin care sheet is 0.15 to 0.5 KPa·s/m good.

In this skin care sheet, as described above, since the air permeability is 0.15 to 0.5 KPa·s/m, sweat emitted from the sweat glands of the skin can more reliably escape through the non-gel region.

In the skin care sheet of the present invention, (4) the gel lotion in the plurality of gel regions protrudes outward 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 (3) may be used.

In the present skin care sheet, the gel lotion in a plurality of gel regions protrude outward from the surface of the sheet member. Therefore, when the gel lotion in the plurality of gel areas comes into contact with the skin (gel-facing skin), the sheet member in the non-gel area rises from the skin (non-gel-facing skin) by the thickness at which the gel lotion protrudes, so that the sheet member in the non-gel area and the sheet member in the non-gel area are raised. The area between the skin (non-gel-facing skin) can be widened. Thereby, sweat emitted from the sweat glands of the skin can more efficiently escape through the non-gel region to the outside.

In the skin care sheet of the present invention, (5) 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 inside in the thickness direction of the sheet member ( The skin care sheet according to any one of 1) to (4) may be used.

In the present skin care sheet, the gel lotion in a plurality of gel regions permeates inward from the surface of the sheet member. Accordingly, it can be said that the constituent fibers of the gel region are approximately fixed by the gel lotion. Therefore, when the skin care sheet is stretched at the time of mounting, the plurality of gel regions can be elongated relatively small due to the inhibition of elongation by the gel lotion, and the non-gel regions can be elongated relatively large because elongation is not inhibited by the gel lotion. . Therefore, compared to the case where the sheet member without the gel lotion is stretched equally, the gel region cannot be stretched much, and the non-gel region can be stretched larger. Thereby, the distance between the constituent fibers in the non-gel region can be made larger, and the air permeability per unit area in the non-gel region can be further improved. Accordingly, sweat emitted from the sweat glands of the skin can be more efficiently discharged to the outside through the non-gel region.

In the skin care sheet of the present invention, (6) the gel lotion in the plurality of gel regions penetrates from the surface of the sheet member to which the gel lotion is applied to the inside of the sheet member in the thickness direction. The skin care sheet according to (5) above may be used.

In the present skin care sheet, the gel lotion in a plurality of gel regions permeates from the surface of the sheet member to an intermediate position inside the sheet member. Accordingly, in each of the constituent fibers of the plurality of gel regions, in the thickness direction, the portion on the surface (hereinafter, also referred to as “application surface”) on which the gel lotion is applied is substantially fixed by the gel lotion, and the gel lotion is applied. The part on the side of the uncoated surface (hereinafter also referred to as "non-coated surface") is not fixed. Therefore, when the skin care sheet is stretched at the time of mounting, in the thickness direction, the entirety can be stretched in the portion on the non-applied surface side, and the non-gel region can be stretched in the portion on the application surface side, but the gel region is It is difficult to stretch with a gel lotion. Accordingly, in the portion on the application surface side, the degree of elongation (however, the non-gel region) increases, the distance between the constituent fibers increases, and the fiber density decreases. On the other hand, in the portion on the uncoated surface side, the degree of elongation is not so high, the distance between the constituent fibers is not relatively large, and 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 migrate from the coated surface to the uncoated surface due to the gradient of the fiber density, and can easily evaporate in contact with the air outside the uncoated surface. can Accordingly, sweat emitted from the sweat glands of the skin can be more efficiently discharged to the outside through the non-gel region.

In the skin care sheet of the present invention, (7) the sheet member can visually recognize the plurality of gel regions from a surface side opposite to the surface of the sheet member to which the gel lotion is applied; The skin care sheet according to (6) may be used.

In the present skin care sheet, since the gel lotion in the plurality of gel regions penetrates inward from one surface of the sheet member, the transparency of the sheet member is different in the plurality of gel regions and non-gel regions. 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 arrange|positioned at the appropriate position of skin. Thereby, the skin care sheet can be stably hold|maintained on skin, ensuring the air permeability in a non-gel area|region.

In the skin care sheet of the present invention, (8) any one of (1) to (7) above, wherein each of the plurality of gel regions is spaced apart from each other in an island shape or a line shape in the application region in a plan view. The skin care sheet according to one of the preceding paragraphs may be used.

In the present skin care sheet, the respective gel regions are arranged spaced apart from each other in an island shape or a line shape, whereby the non-gel regions surround part or all of each gel region. For this reason, sweat emitted from the gel-facing skin can more easily reach the non-gel-facing skin adjacent to, for example, diffuse over the skin and surround the gel-facing skin, and can more easily escape to the outside through the non-gel region. have. Thereby, even if the sweat glands of the gel-facing skin are covered with the gel lotion, it is possible to further suppress that sweat builds up between the gel lotion and the gel-facing skin, thereby causing itching or erosion of the skin.

The skin care sheet according to any one of (1) to (8) above, wherein (9) the ratio of the area of the plurality of gel regions to the area of the sheet member in a plan view is 30 to 95%. The described skin care sheet may be used.

In this skin care sheet, as described above, the ratio of the area of the gel region is 30 to 95%. Therefore, it is possible to properly balance the adhesion of the sheet member to the skin by the gel lotion of the plurality of gel regions and the securing of air permeability by the non-gel region. Thereby, the skin care sheet can be stably hold|maintained on skin, ensuring the air permeability in a non-gel area|region.

The skin care sheet of the present invention includes (10) the skin care sheet is a face skin care sheet, the face skin care sheet having at least one opening in the sheet member, The skin care sheet according to any one of (1) to (9), wherein the basis weight of the gel lotion per unit area is greater than the basis weight of the gel lotion per unit area in regions other than the peripheral region.

In this skin care sheet, the basis weight of the gel lotion in the peripheral region of the opening is relatively increased. For this reason, the adhesiveness of the peripheral area|region of the opening part where a sheet member easily comes off from skin can be improved. Thereby, the skin care sheet can be stably hold|maintained on skin, ensuring the air permeability in a non-gel area|region.

ADVANTAGE OF THE INVENTION According to this invention, the skin care sheet which can ensure the desired installation time without inducing skin itchiness etc. can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS 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 rear view which show 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 the sweat at the time of wearing of the face mask which concerns on embodiment.
It is a schematic diagram which shows the expansion-contraction state at the time of mounting|wearing of 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.
7 is a partial cross-sectional view and a partial rear view showing another structural example of the face mask according to the embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, about the skin care sheet which concerns on embodiment of this invention, the face mask (henceforth simply referred to as a "face mask") for the face (pack) is demonstrated as an example. However, this invention is not limited to the example, It can apply with respect to various skin care sheets within the range which does not deviate from the subject of this invention. For skin care sheets, skin care sheets for not only the entire face, but also parts of the face (eg, around the eyes, nose, mouth) and body parts (eg, arms, hands, abdomen, neck, chest, décolleté, feet) can be heard

1 and 2 are schematic diagrams showing a configuration example of the face mask 1 according to the embodiment. 1 : is a front view which shows the structural example of the face mask 1, FIG. 2(b) is a partial rear view of the face mask 1 of FIG. 1, (a) is FIG. 2(b) ) is a partial cross-sectional view along the IIa-IIa 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. Viewing the face mask 1 placed on a plane in the thickness direction T from the vertical upper side of the plane is called "planar view", the shape grasped in planar view is called "planar shape", and the vertical direction (L) and an arbitrary direction in a plane including the lateral direction W is called an "in-plane direction". "Skin side" and "non-skin side" mean the side relatively close to and farther from the wearer's skin surface in the thickness direction T of the face mask 1 at the time of wearing the face mask 1, respectively. .

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

The sheet member 2 has a first surface S1 that is one surface and a second surface S2 that is the other surface opposite to the first surface S1. The first surface S1 is a surface on which the gel lotion 3 is applied. The second surface S2 is a surface on which the gel lotion 3 is not applied. In this embodiment, the shape of the sheet member 2 will not be restrict|limited in particular as long as it can cover a user's face, A well-known shape of a face mask 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 in a two-dimensional plane, an oval shape, or a rectangular shape with rounded corners. A plurality of openings 4a to 4d are formed in the sheet member 2 . Two openings 4a and 4a are formed at the positions of the right eye and the left eye, respectively, the opening 4b is formed as an incision at the position of the nostril, the opening 4c is formed at the position of the mouth, 2 The dog openings 4d and 4d are 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 facial shape and ears, eyes, nose, and mouth of a person assumed as the user of the face mask 1 are It can be appropriately designed based on the shape or location of Note that at least one of the plurality of openings 4a to 4d may be omitted as appropriate.

The sheet member 2 has an application area|region _AT and non-application area|region A _U. The application region _AT is a region to which the gel lotion 3 is applied while facing the skin to be subjected to skin care when the face mask 1 is mounted. The application area _AT is, in the present embodiment, as shown in FIG. 1 , in the sheet member 2 , the central area of the face in the transverse direction W, that is, approximately from the outer edge of the right cheek to the left cheek. This is the area that covers the part between the outer margin and the outer margin. The non-applied area A _U is an area that faces the skin that is not subjected to skin care when the face mask 1 is mounted, and is an area where the gel lotion 3 is not applied, and thus It is an area|region other than application|coating area|region _AT. The non-applied area A _U is, in the present embodiment, as shown in FIG. 1 , in the sheet member 2 , the area at both ends of the face, that is, the area approximately covering the peripheral portions of the right and left ears. , are regions on both sides of the application region A _{T in the transverse direction W.} Moreover, the non-coated area| _{region A U} may be _{substantially non-coated area|region A U} of area zero (0). As for the area of application|coating area|region _AT , 30 to 95% of the area of the sheet member 2 is mentioned, for example, 50 to 90% of the area is preferable. If the area is too small, the efficiency of skin care becomes low, and if it is too large, handling becomes difficult.

The sheet member 2 is formed of a nonwoven fabric or a woven fabric. The material for the woven fabric or nonwoven fabric is not particularly limited, and examples thereof include chemical fibers, but may be natural fibers. As a chemical fiber, a thermoplastic resin fiber is mentioned, for example. There is no restriction|limiting in particular as a thermoplastic resin fiber, if it is a fiber containing a thermoplastic resin. Examples of the thermoplastic resin include olefin-based resins such as polyethylene (PE), polypropylene (PP), and ethylene-vinyl acetate copolymer (EVA), and polyester-based resins such as polyethylene terephthalate (PET) and polylactic acid (PLA). Well-known resin, such as polyamide-type resin, such as resin and 6-nylon, is mentioned. These resins may be used independently and may use 2 or more types of resin together. In addition, the structure of the fiber made of such a thermoplastic resin is not particularly limited, and includes, for example, short fibers, core-sheath fibers, side-by-side fibers, and conjugate fibers such as island/sea fibers; hollow fiber; irregular cross-sectional fibers such as flat, Y-shaped, and C-shaped; three-dimensional crimped fibers of latent crimp or current crimp; and split fibers divided by physical loads such as water flow, heat, and embossing. The fibers having such a structure may be used alone, or two or more types of fibers may be used in combination. These thermoplastic resin fibers may be hydrophilic or hydrophobic, and may be hydrophilized with a hydrophilizing agent. In the present embodiment, as the hydrophobic fibers, PE/PP core-sheath composite fibers and PE/PET core-sheath composite fibers are mixed and used in a predetermined ratio (eg, 85 to 65:15 to 35). Examples of natural fibers include cellulose fibers. The cellulosic fiber is not particularly limited as long as it is a fiber containing cellulose, and examples include natural cellulose fibers such as cotton, regenerated cellulose fibers such as rayon, refined cellulose fibers such as pulp fibers, and semisynthetic cellulose fibers such as acetate fibers. have.

The method for forming the nonwoven fabric is not particularly limited, and methods such as a card method, a spun bond method, a melt blown method, and an air-laid method can be used. In addition, a method of bonding and entangling the constituent fibers of the web formed by this method by methods such as an air-through method, a thermal bonding method, a needle punch method, a chemical bonding method, and a spunlace method is exemplified.

The fineness in particular of the sheet member 2 is not restrict|limited, For example, 0.8-15 dtex is mentioned. 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 in particular of the sheet member 2 is not restrict|limited, For example, 10-200 g/m<2> is mentioned. The thickness in particular of the sheet member 2 is not restrict|limited, For example, 0.1-5 mm is mentioned.

The sheet member 2 has elasticity and air permeability.

As the elasticity, for example, the maximum point elongation in the conveying 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, when the sheet member 2 is manufactured, the maximum point strength in the conveying direction MD is 20 to 100 N/50 mm, and the maximum point strength in the transverse direction CD is 100 to 200 N/50 mm. can be heard In this embodiment, it is assumed that the sheet member 2 is extended in the transverse direction W and used, and the transverse direction CD at the time of manufacturing the sheet member 2 is the transverse direction at the time of production of the sheet member 2 . The face mask 1 is formed so as to be in the direction W.

In terms of air permeability, when the sheet member 2 is stretched by 10% in a state in which the gel lotion 3 is applied to the sheet member 2 (described later), the area to which the gel lotion 3 is not applied (non-gel area) As for _{the air permeability of (B U} ): mentioned later), 0.05-0.15 KPa*s/m is mentioned, for example. In addition, gel lotion 3 are regions in the coating: the air permeability (gel region _(G B) described below), there may be mentioned, for example from 0.5 to 0.7 the KPa · s / m. The air permeability of a region (application region _AT : to be described later) in which a region to which the gel lotion 3 is applied (gel region B _G ) _{and a region not to be applied (non-gel region B U ) coexist is, for example,} 0.15-0.5 KPa·s/m is mentioned.

3 : is a schematic diagram which shows the wearing state of the face mask 1 which concerns on embodiment. The user P of the face mask 1 stretches the sheet member 2 mainly in the transverse direction W, and puts the first surface S1 on which the gel lotion 3 is applied to the skin to face the face. The face mask 1 is mounted on the face by putting it on and inserting the right ear and the left ear 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 applied _{to the first surface S1 of the sheet member 2, which is the application area AT} , in a region facing the skin to be treated, that is, in the central portion of the face. It is an area|region, that is, it apply|coated to the area|region which substantially covers the part between the outer edge of a right cheek and the outer edge of a left cheek.

As shown in FIG. 2 , the sheet member 2 has, in the application region A _{T , a plurality of gel regions B G} having the gel lotion 3 and a non-gel region without the gel lotion 3 . It has (B _U ). That is, the gel lotion 3 is applied to each of the plurality of gel areas B _{G in the application area A T} of the sheet member 2 in the planar shape of each of the plurality of gel areas B _{G .} and is arranged so as not to be applied to the non-gel area B _U in the application area _{AT .} However, the skin care agent of the gel moisturizer (3) is supplied to the skin region from the gel _(G B) by contact with the gel region _(G B) skin. And, in addition to that, the skin care agent diffuses in the in-plane direction within the sheet member 2 from the _{gel region B G to reach the non-gel region B U} , and can be supplied to the skin directly or indirectly therefrom. have.

In the present embodiment, each of the plurality of gel regions B _G is arranged in an island (island) shape or a line (line) shape in the application region _{AT in plan view, spaced apart from each other.} And the non-gel area|region B _U is formed so that each of the some gel area|region B _G may be enclosed in the application area|region _{AT in planar view.} The non-gel region B _{U surrounds each of the plurality of gel regions B G} in plan view so as to be in contact with a part or all of the outer peripheral edge of each gel region B _{G , and in terms of air permeability,} It is preferable to surround so as to be in contact with the whole. Here, the shape of the island is not particularly limited, and examples thereof include a circle, an oval, a square, a rectangle, a polygon, a heart, a flower, a leaf, or a combination thereof. The linear shape includes a straight line, a curved line, a broken line, or a combination thereof having a predetermined width and extending continuously or intermittently in a predetermined direction. Each shape of the plurality of gel regions B _G may be the same as each other, some or all of them may be different from each other, and an island shape and a line shape may be mixed. The shape, 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, the impression that the user remembers, and the like.

In each of the plurality of gel regions B _G , the interval (shortest distance) between the closest gel regions B _G is, for example, 0.2 to 10 mm, preferably 0.4 to 5 mm. , and more preferably 0.8 to 2 mm. The distance (shortest distance) between the second adjacent gel regions B _G is, for example, 0.4 to 20 mm, preferably 0.8 to 10 mm, more preferably 1 to 8 mm. can be heard If the interval is too narrow, it becomes difficult to increase the air permeability of the region between each of the _{plurality of gel regions B G (non-gel region B U} ), and if the interval is too wide, skin care with the gel lotion 3 . the effect is lowered.

Each area of the plurality of gel regions B _G is, for example, 1 mm 2 to 9 cm 2 , preferably 4 mm 2 to 4 cm 2 , more preferably 9 mm 2 to 1 cm 2 . If the area is too small, the skin care effect of the gel lotion 3 is lowered, and if the area is too large, the air permeability of the area between each of the _{plurality of gel areas B G (non-gel area B U ) is reduced.} difficult to raise

Each of the plurality of gel regions B _{G is} arranged such that each gel region B _G is first spaced (or not spaced apart) in a first arbitrary direction (eg, longitudinal direction L). They may be arranged in a row, and each row may be arranged side by side at a second interval in a second direction (eg, the horizontal direction W) perpendicular to the first direction. As such an arrangement, for example, when the gel regions B _G have the same shape, a checkerboard pattern (checker) shape or a stripe shape is exemplified. As for the 1st space|interval and 2nd space|interval, 0.2 mm - 2 cm are mentioned, for example, 0.4 mm - 1 cm are preferable, and 0.8 mm - 1 cm are more preferable. If the interval is too narrow, it becomes difficult to increase the air permeability of the region between each of the _{plurality of gel regions B G (non-gel region B U} ), and if the interval is too wide, skin care with the gel lotion 3 . the effect is lowered.

Further, in plan view, some of the plurality of gel regions B _G may be connected to each other to group the plurality of gel regions B _G , and correspondingly, _{the non-gel region B U} may be divided into a plurality of regions. . The non- _{gel region B U} not only surrounds the entire outer peripheral edge of _{each gel region B G} in a plan view, but also comes in contact with a part of the outer peripheral edge of _{each gel region B G so as to be in contact with the gel region.} (B _G ) may be partially surrounded. In addition, the distance shall be measured by the shortest distance, and when _{the shape of the gel region (B G} ) is irregular and the distance between each other cannot be specified, the gel region (B _G ) is the same centered on the center of gravity. It is assumed to be approximate to a circle of area.

In the present embodiment, each of the plurality of gel regions B _G is arranged to be spaced apart from each other in a checkerboard pattern in the application region _{AT in plan view.} In that case, the gel region (B _G ) is approximately square (eg, 3 to 10 mm on one side), and _{the square corners of the closest gel region (B G} ) are separated by a small distance from each other (eg, 0.8 to 2 mm). are spaced apart Thereby, the skin care effect of the gel lotion 3 and the air permeability of the area| _{region (non-gel area|region B U ) between each of the some gel area|regions B G} can be adjusted appropriately.

In the present embodiment, the ratio R1 of the area of the plurality of gel regions B _{G to the area of the application region AT} of the sheet member 2 in a plan view is not particularly limited, and the face mask 1 is not limited thereto. It is appropriately set according to the functions required for the gel lotion 3 of the As for the ratio R1, 30 to 80 % is mentioned, for example, 35 to 70 % is preferable. Corresponding to these, the ratio R2 of the area of the non-gel region B _{U to the area of the application region AT} of the sheet member 2 is, for example, 70 to 20%, preferably 65 to 30%. do. When R1 is small (when R2 is large), _{it is difficult to exert the function of the gel lotion 3 in the gel region (B G} ), and when R1 is large (when R2 is small), the non-gel region (B _U ) becomes small and sweat becomes difficult to ventilate.

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 or the like. The basis weight of the gel lotion 3 is, for example, 50 to 500 g/m 2 , preferably 100 to 400 g/m 2 . When 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 when the basis weight is too large, the non-gel region B _U becomes small, making it difficult to permeate sweat. _{The thickness d M} of the gel lotion 3 is, for example, 0.1 to 6 mm, preferably 0.2 to 4 mm. When the thickness is thin, it is difficult to exert a skin care effect for a long time, and when the thickness is thick, the gel lotion 3 is excessively large, and stickiness or the like may occur.

In the present embodiment, the gel lotion 3 in the plurality of gel regions B _G is applied from the first surface S1 of the sheet member 2 to which the gel lotion 3 is applied. It protrudes outward in the thickness direction T. That is, the gel lotion 3 includes the protrusion 3a protruding outward in the thickness direction T from the first surface S1 of the sheet member 2 . The thickness of the protrusion 3a is d _K >0. When the face mask 1 is mounted on the face, the protrusion 3a can form a small gap between the first face S1 of the sheet member 2 and the skin of the face. The size of the thickness d _K is, for example, 0.05 to 3 mm, preferably 0.1 to 2 mm, under the condition _{of 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%. If it is too thin (too small), ventilation of sweat in the non- _{gel area B U becomes difficult.} If it is too thick (too large), _{permeation of sweat in the non-gel area B U} is easy, but even if the gel lotion 3 _{diffuses into the non-gel area B U} within the sheet member 2 , it is difficult to contact the skin. it gets difficult

In the present embodiment, the gel lotion 3 of the plurality of gel regions B _G has a thickness of the sheet member 2 from the first surface S1 of the sheet member 2 to which the gel lotion 3 is applied. It permeates to the inside of the direction T, Preferably it permeates to the middle of the inside of the thickness direction T of the sheet member 2 . Accordingly, the gel lotion 3 includes the penetrating portion 3b penetrating 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 the thickness d _L is thickened, the penetrating portion 3b fixes the constituent fibers of the gel region B _{G to the gel region B G} when the face mask 1 is stretched and mounted on the face, thereby forming the gel region. The constituent fibers of (B _G ) do not expand and contract much, and the constituent fibers of the non-gel region (B _U ) can be stretched more. On the other hand, if the thickness d _L is made thin, a difference in fiber density of the constituent fibers may occur between the portion on the first surface S1 side and the portion on the second surface S2 side of the sheet member 2 . The size of the thickness d _L is, for example, 0.05 to 4 mm, preferably 0.1 to 2 mm, under the condition _{of the thickness d M} of the sheet member 2 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%. On becomes too thin if the (too small,) difficult to spread on bigel region (B _U), a skin-care agent of the gel moisturizer 3 in the sheet member 2, bigel region (B _U) bigel region (B _U) from It becomes difficult to supply a skin care agent to the skin which opposes, and when it is too thick (excessively large), it will become easy to leak to the 2nd surface S2 side of the sheet member 2 side.

In the present embodiment, in the sheet member 2 _{, since the gel lotion 3 in the plurality of gel regions B G} penetrates inside the sheet member 2, the light reflectance or light transmittance between the regions is _{From the difference, the plurality of gel regions B G} can be visually recognized from the side of the second surface S2 opposite to the first surface S1 of the sheet member 2 to which the gel lotion 3 is applied.

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

The gel lotion 3 contains a gelling agent and a lotion. The gelling agent is a component for holding the lotion, and in this embodiment, a styrenic elastomer is included. Lotions contain hydrocarbon oils and skin care agents.

In the gel lotion 3, the lotion (hydrocarbon oil, skin care agent) continuously bleeds to the surface of the gel lotion in a certain amount. Accordingly, the gel lotion 3 can continuously release the skin care agent to the surface of the gel lotion 3 . That is, the gel lotion 3 has sustained-release properties with respect to the skin care agent. Therefore, even if the skin care agent is released on the wearer's skin and disappears from the surface of the gel lotion 3, a new skin care agent can be supplied to the surface of the gel lotion 3 from the inside of the gel lotion 3, The skin care agent can be continuously released to the wearer's skin. Thereby, the skin care agent can be made to act on the skin of the wearer's face directly or indirectly in contact with the sheet member 2 over a long period of time. Therefore, even if the wearing time is prolonged, it is possible to suppress a decrease in the efficiency of moisturizing the skin.

The effect of the face mask 1 (skin care sheet) is demonstrated.

Fig. 4 schematically shows movement of sweat when the face mask according to the embodiment is worn. In the face mask 1 (skin care sheet) of this embodiment, the application area A of the sheet member 2 having air permeability is using an oily gel lotion 3 having a predetermined component containing a skin care agent. _{In T} ), a gel region B _G with the gel lotion 3 and a non-gel region B _U without the 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 is also a sustained release. Therefore, the skin care agent can be continuously supplied to the skin. Thereby, even if the wearing time is lengthened, it can suppress that the efficiency which moisturizes skin falls.

In addition, as shown in Fig. 4, since the oily gel lotion 3 is not disposed in the non-gel _{region B U at the time of wearing, in the skin 50S of the wearer 50,} The sweat glands 62 of the skin (hereinafter also referred to as "non-gel-facing skin") 50SU facing the non-gel region B _{U are not covered with the gel lotion 3 .} Accordingly, the sweat 64 released from the sweat glands 62 is released to _{the region V between the non-gel region B U} and the non-gel-facing skin 50SU, and then through the non- _{gel region B U .} can go outside. At this time, since the face mask 1 is formed of a nonwoven fabric (or woven fabric) and further has elasticity, when it is stretched during wearing, the distance between the fibers constituting the sheet member increases, and the air permeability can be further improved. . Thereby, the sweat 64 can more easily escape to the outside through the non- _{gel region B U .} On the other hand, the gel region (B _G) has (hereinafter also referred to as "gel-facing skin") because the oil-based gel moisturizer (3) is arranged, the skin facing the gel region (B _G) glands (61 (50SG) ) is covered with gel lotion (3). However, since the sweat 63 can diffuse to some extent, for example, on the surface of the skin 50SG, thereby easily reaching the non-gel-facing skin 50SU close to the gel-facing skin 50SG, It can escape to the outside through the non-gel region B _{U .} Thereby, even if the sweat glands 61 of the gel-facing skin 50SG are covered with the gel lotion 3, sweat builds up between the gel-lotion 3 and the gel-facing skin 50SG, causing itching or burning of the skin. can be restrained Accordingly, the wearer can continue to wear the face mask 1 for a desired period of time without removing the face mask 1 in a short time.

Thereby, it is possible to provide the face mask 1 that can easily secure a desired wearing time without causing skin itchiness or the like.

_{In a preferable aspect of this embodiment, the air permeability of the application area|region AT} at the time of 10% elongation of a skin care sheet is 0.15-0.5 KPa*s/m. Therefore, sweat emitted from the sweat glands of the skin can more reliably escape through the non- _{gel region B U to the outside.}

In a preferred aspect of the present embodiment _{, the gel lotion 3 of the plurality of gel regions B G} is the first surface S1 of the sheet member 2 in the thickness direction T of the sheet member 2 . ) projecting outward. Therefore, when the gel lotion in the plurality of gel regions B _G comes into contact with the skin (gel-facing skin) 50SG, the sheet member 2 in the non- _{gel region B U by the thickness in which the gel lotion 3 protrudes.} may rise from the skin (non-gel-facing skin) 50SU, thereby widening the region V between the sheet member 2 of the non- _{gel region B U and the skin (non-gel-facing skin) 50SU.} Thereby, sweat emitted from the sweat glands of the skin can escape to the outside through the non- _{gel region B U more efficiently.}

In a preferred aspect of the present embodiment _{, the gel lotion 3 of the plurality of gel regions B G} is the surface of the sheet member 2 in the thickness direction T of the sheet member 2 from the first surface S1 . penetrating into the inside of Accordingly, the constituent fibers of the gel region B _G are rendered difficult to move by the gel lotion 3 , ie, approximately fixed, compared to the region without the gel lotion 3 , that is, the non-gel region B _{U .} it can be said that there is Therefore, when the face mask 1 is stretched at the time of wearing, the plurality of gel regions B _G are stretched relatively small because the gel lotion 3 is inhibited from stretching, and _{the non-gel regions B U} are the gel lotion. In (3), elongation is not inhibited, and relatively large elongation can be achieved. Therefore, compared to the case where the sheet member in which the gel lotion 3 is not present is stretched equally, the gel region B _G cannot be stretched much _{, and the non-gel region B U} can be stretched larger. . Thereby, bigel region _(U B) can be larger than the distance between the constituent fibers at, can be more enhanced breathability per unit area in the region bigel (B _U). Accordingly, sweat emitted from the sweat glands of the skin can be more efficiently discharged to the outside through the non-gel region.

5 : is a schematic diagram which shows the expansion-contraction state at the time of attachment of the face mask 1 which concerns on embodiment. However, Fig. 5 (a) shows the state before the sheet member 2 of the face mask 1 is stretched, and Fig. 5 (b) shows the face mask 1 when the sheet member 2 is stretched. show the status In a preferred aspect of the present embodiment _{, the gel lotion 3 of the plurality of gel regions B G} is the first surface S1 of the sheet member 2 in the thickness direction T of the sheet member 2 . ) penetrates to the middle of the inner side. For example, _{the ratio of the thickness d L} of the penetrating portion 3b to _{the thickness d M} of the gel lotion 3 may be 30 to 60%. In other words, _{the gel lotion 3 of the gel region B G} does not penetrate the sheet member 2 in the thickness direction T. Accordingly, the constituent fibers of the gel region B _G , in the thickness direction T, the portion on the first surface S1 (application surface) side, which is the surface on which the gel lotion 3 is applied, is the gel lotion 3 The portion on the second surface S2 (non-applied surface) side, which is the surface to which the gel lotion 3 is not applied, is not fixed. Therefore, as shown in Fig. 5, when the sheet member 2 of the face mask 1 is extended at the time of attachment, in the thickness direction T, the second surface S2 (non-applied surface) side In the part, the whole can be stretched, and in the part on the side of the first surface S1 (application surface) _{, the non-gel region B U} can be stretched, but the gel region B _{G is} formed by the gel lotion 3 . It becomes difficult to extend. Accordingly, in the non-gel region B _U , the degree of elongation is high in the portion on the first surface S1 side, the distance between the constituent fibers increases, and the fiber density decreases, but in the portion on the second surface S2 side The degree of elongation is not very high, and the distance between the constituent fibers is not very large, so the fiber density is not very low. That is, in the non-gel region B _U , the fiber density increases from the first surface S1 to the second surface S2 in the thickness direction T of the sheet member 2 .

Specifically, as schematically shown in FIG. 5A , in the first surface S1 , the widths e2 and e4 _{of the gel region B G arranged in the transverse direction W, and the non-gel region} The widths e1, e3, and e5 of (B _{U ) are all equal to each other.} That is, e2 = e4 = e1 = e3 = e5. At that time, in the second surface S2, the widths f2 and f4 of the regions corresponding _{to the gel regions B G (widths e2 and e4) arranged in the transverse direction W on the first surface S1, and} The widths f1, f3, and f5 of the regions corresponding to the non-gel regions B _U (widths e1, e3, e5) are all equal to each other and also equal to e2, e4, e1, e3, e5. That is, f2=f4=f1=f3=f5=e2=e4=e1=e3=e5. Boundaries of the stage, the gel region (B _G) and bigel region (B _U) and, in the thickness direction between the area corresponding to the gel zone (B _G) region and bigel region (B _U) corresponding to (T), the sheet It is set as the position of the half thickness of the member (2). At that time, as schematically shown in FIG. 5B , when the sheet member 2 is elongated in the transverse direction W, it is arranged in the transverse direction W on the first surface S1. The widths e2, e4 of the gel region (B _G ) extend to the widths E2 (>e2), E4 (>e4), and the widths e1, e3, e5 of the non- _{gel region (B U ) are the widths E1 (>e1), E3} (>e3), E5 (>e5), and approximately (E2=E4)<(E1=E3=E5). On the other hand, in the second surface S2 , the widths f2 and f4 of the regions corresponding _{to the gel regions B G (widths e2 and e4 ) arranged in the transverse direction W on the first surface S1 are the widths F2 .} (>f2), F4 (>f4), _{the widths f1, f3, f5 of the region corresponding to the non-gel region B U} (widths e1, e3, e5) are the widths F1 (>f1), F3 (> f3), F5 (>f5), and approximately F2=F4=F1=F3=F5. From this relationship, it becomes approximately (E2=E4)<(F2=F4=F1=F3=F5)<(E1=E3=E5). Therefore, the sheet member 2 is extended so that the width|variety of the area|region where E1=E3=E5 becomes, ie, the non-gel area|region B _{U of the 1st surface S1 may become widest.} Then, the sheet member 2 is stretched such that the width of the region where F2=F4=F1=F3=F5 becomes, that is _{, the width of the non-gel region B U} and the gel region B _{G of the second surface becomes wider next.} do. And the sheet member 2 is extended so that the width|variety of the area|region where the width|variety becomes E2=E4, ie, the gel area|region B _{G of the 1st surface S1, does not become widest.} Here, the magnitude relationship of the width in each region corresponds to the magnitude relationship of the fiber density in each region approximately. For example, when 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. Thus, the first area than the fiber density of bigel _(U B) of the surface (S1), the higher the density of the fiber bigel region _(U B) and a gel region _(G B) of the second surface. As a result, even if the sweat that has reached the non-gel region B _U of the first surface S1 becomes liquid, it can be transferred from the first surface S1 to the second surface S2 by the gradient of the fiber density. and may easily evaporate in contact with the air outside of the second surface S2. Accordingly, sweat emitted from the sweat glands of the skin can be more efficiently discharged to the outside through the non-gel region.

In a preferred aspect of this embodiment _{, since the gel lotion 3 of the plurality of gel regions B G} penetrates inward from the first surface S1 which is one surface of the sheet member 2, the sheet member ( The transparency of 2) is different in the plurality of gel regions (B _G ) and non- _{gel regions (B U} ). _{Accordingly, the plurality of gel regions B G} can be visually recognized from the second surface S2 side, which is the other surface of the sheet member 2 . Thereby, when the face mask 1 is attached to the skin, the first surface S1 to which the gel lotion 3 is applied is on the skin side, and while the second surface S2 is viewed with a mirror or the like, the face mask 1 ) can be placed in an appropriate location. Thereby, the face mask 1 can be stably hold|maintained on skin, ensuring the air permeability in non-gel area|region B _U.

In a preferred aspect of the present embodiment, each of the plurality of gel regions B _G is arranged spaced apart from each other in an island shape or a line shape in the _{application region A T} in plan view, and _{the non-gel region B U} . Silver is formed so as to surround each of the plurality of gel regions B _{G in the} application region A _{T .} For that reason, sweat emitted from the gel-facing skin 50SG can spread over the skin 50S and reach the non-gel-facing skin 50SU which is adjacent to surround the gel-facing skin 50SG, for example, more easily, and the non-gel It is possible to more easily escape to the outside through the region B _{U .} Thereby, even if the sweat glands 61 of the gel-facing skin 50SG are covered with the gel lotion 3, sweat builds up between the gel-lotion 3 and the gel-facing skin 50SG, causing itching or burning of the skin. can be more restrained.

In a preferred aspect of the present embodiment, in a plan view, the ratio of the area of the plurality of gel regions B _G to the area of the sheet member 2 is 30 to 95%. Therefore, it is possible to properly balance the adhesion of the sheet member 2 to the skin by the gel lotion 3 of the plurality of gel regions B _G and the securing of air permeability by _{the non-gel region B U .} have. Thereby, the face mask 1 can be stably hold|maintained on skin, ensuring the air permeability in non-gel area|region B _U.

In a preferred aspect 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 the gel lotion 3 in the region other than the peripheral region. is increased from the basis weight of For this reason, the adhesiveness of the peripheral area|region of the opening part where the sheet|seat member 2 easily comes off from skin can be improved. Thereby, the face mask 1 can be stably hold|maintained on skin, ensuring the air permeability in non-gel area|region B _U.

The gel lotion 3 can be manufactured without any particular limitation. For example, a coating solution is prepared by adding and mixing a gelling agent in a heated lotion, and the coating solution is applied to the sheet member 2 to which the gel lotion 3 is to be applied, so that the face mask 1 is placed on the face mask 1 . A gel lotion 3 can be prepared.

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, an aromatic solvent, or the like, if necessary. When the coating liquid contains a volatile solvent, since the viscosity of the coating liquid becomes low, application becomes easy, and the application process simplification is achieved, such as heating at the time of painting becoming unnecessary.

The coating method in particular is not restrict|limited, The coating liquid is heated as needed, For example, it can apply|coat by a non-contact type coater, a contact type coater, etc. As a non-contact type coater, a spiral coater, a curtain coater, a spray coater, a dip coater, etc. are mentioned, for example. As a contact type coater, a slot coater, a pattern coater, etc. are mentioned, for example.

Next, the detail of the gel lotion 3 is demonstrated.

As the styrenic elastomer, it is preferable to have a hard segment and a soft segment. The hard segment is preferably a polystyrene block, and the soft segment is preferably a polyolefin block.

As the polystyrene block, for example, a block made of a homopolymer of styrene (ie, a polystyrene block), a block made of a homopolymer of α-methylstyrene (ie, a polyα-methylstyrene block), and styrene and α-methylstyrene block consisting of a copolymer of As a polyolefin block, the block which consists of a homopolymer of polyolefin, and the block which consists of a copolymer of polyolefin, for example is mentioned. As a block which consists of a homopolymer of polyolefin, a polyethylene block, a polypropylene block, a polybutylene block, and a polybutadiene block are mentioned, for example. Examples of the block made of a copolymer of polyolefin include a block made of a copolymer of ethylene, propylene, butylene and butadiene. In addition, in this specification, butadiene is also handled as an olefinic monomer for convenience. The soft segment includes hydrogen adducts of polybutadiene blocks and hydrogen adducts of blocks composed of butadiene and copolymers such as ethylene, propylene, butylene and butadiene.

The styrenic elastomer preferably has hard segments at both ends and one or more soft segments therebetween. Specific examples of the styrene-based elastomer include, for example, styrene-butadiene-styrene block copolymer (SBS), styrene-isobutylene-styrene block copolymer (SIBS), styrene-isoprene-styrene block copolymer (SIS), styrene -Ethylene-propylene block copolymer (SEP), styrene-ethylene-propylene-styrene block copolymer (SEPS), styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-ethylene-ethylene-propylene styrene block copolymer coalescing (SEEPS), and combinations of two or more thereof.

The styrenic elastomer has a weight average molecular weight of preferably 5,000 to 500,000, more preferably 10,000 to 400,000, still 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 styrenic elastomer to maintain the gel structure, and when the weight average molecular weight is more than 500,000, the feeling of wearing tends to decrease. In addition, the measuring method of a weight average molecular weight is mentioned later.

The styrenic elastomer preferably contains 10 to 50 mass % of polystyrene blocks and 50 to 90 mass % of polyolefin blocks, more preferably 15 to 40 mass % of polystyrene blocks, and 60 to 85 mass % of polystyrene blocks. It contains polyolefin blocks. The styrenic elastomer further preferably contains 18 to 35 mass % of polystyrene blocks and 65 to 82 mass % of polyolefin blocks. When the amount of the polystyrene block is less than 10% by mass, it tends to be difficult for the polystyrene block to form a microlayer separation structure described later. When the amount of the polystyrene block is more than 50% by mass, the amount of the polyolefin block capable of holding the lotion decreases, and by extension, the amount of the lotion that can hold the lotion tends to decrease. In addition, the amount of the microlayer separation structure of the polystyrene block increases, the gel lotion formed becomes hard, and the feeling of wearing tends to deteriorate.

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

When the styrenic elastomer is mixed with the lotion, the soft segments of the styrenic elastomer hold the lotion, while the hard segments form domains. As a result, the mixture of the styrenic elastomer and the lotion (gel lotion) functions as an elastic body having a compressive stress lower than that of the styrenic elastomer alone. In addition, the lotion is only held in a loose mesh of soft segments of styrenic elastomer, and can move to the surface of the gel lotion.

Lotions contain hydrocarbon oils. In this specification, "hydrocarbon oil" means a compound consisting of carbon and hydrogen. The hydrocarbon oil includes, for example, chain hydrocarbons and cyclic hydrocarbons. Chain hydrocarbons include, for example, paraffinic hydrocarbons (without double and triple bonds; alkanes), olefinic hydrocarbons (with one double bond; alkenes), acetylenic hydrocarbons (including one triple bond; alkynes), and hydrocarbons including two or more bonds selected from the group consisting of double bonds and triple bonds. Examples of the cyclic hydrocarbon include an aromatic hydrocarbon and an alicyclic hydrocarbon. As the hydrocarbon oil, chain hydrocarbons and alicyclic hydrocarbons are preferable, chain hydrocarbons are more preferable, and paraffinic hydrocarbons, olefinic hydrocarbons and hydrocarbons containing two or more double bonds (not including triple bonds) are more preferable. and paraffinic hydrocarbons are more preferable. However, straight-chain hydrocarbons and branched-chain hydrocarbons are included in the chain hydrocarbons.

The hydrocarbon oil preferably has a kinematic viscosity of 0.01 to 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 may contribute to the action of bleeding on the surface of the gel lotion 3 . Moreover, the hydrocarbon oil may contain the hydrocarbon oil used as a skin tackifier. It is preferable that the hydrocarbon oil as a skin tackifier has a kinematic viscosity of 80-400 mm<2>/s at 40 degreeC. The hydrocarbon oil as the skin tackifier is preferably 20 to 80% by mass in the hydrocarbon oil. When it is less than 20 mass %, it becomes difficult to adhere to the skin, and when it exceeds 80 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 (eg, emollient effect), and a known agent can be used. Examples of the skin care agent include a formulation of fatty acid esters, a formulation of fatty acids, a formulation of aliphatic alcohols, and a combination thereof, and specifically, tri(caprylic/capric acid) glycerin; Oleic acid, icosenoic acid, docosanol, etc. are mentioned. Examples of the material containing these agents include olive oil, macadamia nut (seed) oil, jojoba (seed) oil, and camellia oil.

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

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

The gel lotion 3 has a static friction coefficient of preferably 0.01 to 1.00, more preferably 0.02 to 0.50, still more preferably 0.03 to 0.03. It is from the viewpoint that the wearer's skin inflammation is difficult to occur. In order to bring the static friction coefficient into the above range, the gel lotion 3 contains, for example, an anti-friction agent, preferably 0.01 to 20 parts by mass, based on 100 parts by mass of the gel lotion (the total of the gelling agent and the lotion is 100 parts by mass). , More preferably, it is contained in an amount of 0.05-10 mass parts, More preferably, it is 0.1-7 mass parts.

The gel lotion 3, as a lotion, may further include other ingredients known as lotions in the art, in addition to the hydrocarbon oil or skin care agent described above.

Other ingredients include, for example, vitamins, such as natural vitamins or synthetic vitamins, or water-soluble vitamins or fat-soluble vitamins. Examples of water-soluble vitamins include vitamin B group, such as vitamin B 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, vitamin C. can Examples of the fat-soluble vitamins include vitamin A group, vitamin D group, vitamin E group, and vitamin K group. Vitamins also include their derivatives. As another component, for example, amino acids such as alanine, arginine, lysine, histidine, proline and hydroxyproline, and peptides can be mentioned. Another component may include, for example, cholesterol, hyaluronic acid, lecithin, ceramide, and the like.

Other components include, for example, zeolites, and examples of the zeolites include, for example, natural zeolites and synthetic zeolites. Natural zeolites include, for example, chaliceolite, zeolite, pyrite, natrolite, zeolite, and tomsonite.

Other ingredients include, for example, drugs, and the drugs include, for example, 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 oil-soluble polyphenols such as zinc oxide, aluminum sulfate, and tannic acid. Examples of oil-soluble polyphenols include natural oil-soluble polyphenols. Natural oil-soluble polyphenols include, for example, yellow white extract, red pepper extract, clown beard extract, chamomila extract, burdock extract, sage extract, basil extract, bodhi tree extract, birch extract, horsetail extract, sage extract, sage extract. extracts, hand walnut extract, hibiscus extract, loquat leaf extract, barley water extract, hop extract, horse chestnut extract, barley rice extract, and the like. 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 derivatives, glycolic acid, phytic acid, lipoic acid, and lysophosphatidic acid. Examples of the anti-cellulite agent include xanthine compounds, such as aminopyrine, caffeine, theophyrine, theobromine, and the like. Examples of the whitening agent include niacinamide, kojic acid, arbutin, glucosamine and derivatives, phytosterol derivatives, ascorbic acid and derivatives thereof, and mulberry extract and placental extract.

Moreover, as another component, for example, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizing agent, a fragrance|flavor, such as an aromatic oil, a pigment, dye, a pigment, a plant extract, etc. are mentioned. Anti-inflammatory ingredients include, for example, naturally-derived anti-inflammatory agents, such as peony, gold, red pepper sprouts, chamomile, licorice, peach leaf, mugwort, perilla extract, and the like, synthetic anti-inflammatory agents, such as allantoin, dipotassium glycyrrhizinate, and the like. . Examples of the pH adjuster include those for keeping the skin slightly acidic, such as malic acid, succinic acid, citric acid, tartaric acid, and lactic acid. As a pigment, titanium oxide is mentioned, for example. Moreover, mineral oil is mentioned as another component.

In the present specification, "weight average molecular weight" refers to a polydisperse compound (eg, a compound prepared by sequential polymerization, a plurality of fatty acids and an ester generated from a plurality of aliphatic monohydric alcohols), and a single compound (eg: 1 In _{a system consisting of N i} molecules of molecular weight M _i (i=1, or i=1, 2, ...) , 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 total 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 A gelling agent, 95 to 70 parts by mass of lotion, and more preferably 10 to 25 parts by mass of a gelling agent and 90 to 75 parts by mass of lotion are included. When the proportion of the gelling agent is less than 2 parts by mass, the formed gel lotion 3 may hardly function as an elastic body or deform beyond the elastic limit of the gel lotion 3 when pressure is applied. When the proportion of the gelling agent exceeds 40 parts by mass, the elasticity of the formed gel lotion 3 is high, and the feeling of wearing may be poor.

In conventional lotion coatings, skin care agents, and the like, when an active ingredient is fixed in a predetermined place, a method of increasing the viscosity (viscosity) is adopted. However, when these are made high in viscosity, active ingredients (e.g., emollients) are trapped inside lotion coatings, skin care agents, etc., making it difficult to exert their functions. In addition, conventional lotion coatings, skin care agents, etc. are only viscous substances, and when pressure is applied by mounting, they are not fixed in a predetermined place, but move to the inside of the sheet member and continue to act on the wearer's skin. There is a problem that is difficult. On the other hand, the gel lotion 3 exhibits a behavior as an elastic body in a range to which the pressure of body mounting is applied. Therefore, even when pressure is applied to the gel lotion 3, it only elastically deforms, does not press-fit between the constituent fibers of the sheet member 2, etc., and elastically recovers when the pressure is lowered, and returns to its original position (first surface). (S1) vicinity). Accordingly, the lotion included in the gel lotion 3 can act at a desired position.

The gel lotion may include other ingredients within a range that does not impair each of the above-described effects. Examples of other components include antioxidants such as BHT (2,6-di-t-butyl-p-cresol) and BHA (butylated hydroxyanisole).

In addition, the structure of a face mask is not limited to the example of FIG. 6 : is a front view which shows the other structural example of the face mask 1a which concerns on embodiment. FIG. 7B is a partial rear view of the face mask 1 of FIG. 6 , and FIG. 7A is a partial cross-sectional view taken along line VIIa-VIIa of FIG. 7B . In the face mask 1a of FIG. 6 , the plurality of gel regions B _{G in the application region AT} are arranged in a stripe shape, and the plurality of gel regions B _G are arranged in a checkerboard pattern. It is different from the face mask 1 of FIG. Hereinafter, differences are mainly described.

_{In the application region AT} of the face mask 1a, each of the plurality of gel regions B _G extends continuously or intermittently in the longitudinal direction L to the _{application region AT} in plan view. and are arranged side by side at intervals in the horizontal direction (W). And, each of the plurality of non- _{gel regions B U} extends continuously or intermittently in the longitudinal direction L between _{the gel regions B G} adjacent to each other to the _{application region AT} in plan view. placed so as to Further, in intermittent portions of the gel region _(G B) and bigel region _(U B), respectively bigel region _(U B) and a gel region _(G B) it is arranged. In this case, a plurality of bigel region (B _U) is formed so as to surround the gel region _(G B) bigel region _(U B) from both sides in the width direction (W) which are adjacent. However, the width (dimension in the horizontal direction W) d _W1 of the gel region B _G is, for example, 1 to 30 mm, preferably 2 to 20 mm, more preferably 3 ˜10 mm. The width (dimension of the transverse direction W) d _W2 of the non-gel region B _U is, for example, 0.2 to 10 mm, preferably 0.4 to 5 mm, more preferably 0.8 to 2 mm can be mentioned.

Also in the face mask 1a shown in FIG. 6 and FIG. 7, the same effect as the face mask 1 shown in FIGS. 1-5 can be acquired. In addition, in the face mask 1a, in a plan view, the ratio of the areas of _{the plurality of gel regions B G in the application region AT} is relatively larger than the ratio of the plurality of non-gel regions _{B U .} For this reason, the skin care agent can be supplied to the skin more continuously, and by this, even if the wearing time is lengthened, it can suppress more that the efficiency which moisturizes the skin decreases.

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

(weight average molecular weight)

A weight average molecular weight means the value of polystyrene conversion calculated|required by gel permeation chromatography (GPC). As the measurement conditions of GPC, the following conditions are mentioned, for example. Model is Hitachi High-Technologies Co., Ltd. product: High-performance liquid chromatogram Lachrom Elite. The columns are SHODEX KF-801, KF-803 and KF-804 manufactured by Showa Denko Corporation. The eluent is THF, the flow rate is 1.0 mL/min, the injection volume is 100 μL, and the detection is RI (differential refractometer).

(Basic weight, thickness and fiber density of the sheet member)

The measuring method of the basis weight of a sheet|seat member is as follows. A sheet member is cut out to a size of 5 cm x 5 cm as a sample, and the mass is measured after drying in an atmosphere of 100 DEG C or higher. The basis weight of the sample is calculated by dividing the measured mass by the area of the sample. Let the value obtained by averaging the basis weights of ten samples be the basis weight of the sheet member.

The measuring method of the thickness of a sheet|seat member is as follows. The thickness of the sheet member is measured under the condition of a measurement load of 3 g/cm 2 using a thickness meter (Model FS-60DS manufactured by Daie Chemical Seisakusho Co., Ltd.) provided with a 15 cm 2 measuring ruler. In one sample, the thickness of three places is measured, and let the average value of the thickness of three places be the thickness of a sheet|seat member.

(Method of measuring air permeability and elasticity)

As a method of measuring the air permeability (air permeability resistance) of the sheet member, it is measured with a KES air permeability tester (manufactured by Katotech Co., Ltd.; part number KES-F8-AP1). This testing machine measures the pressure loss of the test piece (differential pressure from atmospheric pressure due to the resistance of the test piece at a constant flow rate of 4 cm 3 /cm 2 ·s in standard measurement) with a pressure sensor, output as '. However, in the air permeability at the time of extending|stretching of the face mask 1, a part of the predetermined|prescribed sheet member 2 is extended as a sample piece, and it measures.

As a method for measuring the elasticity of the sheet member, it is assumed that it is measured with a constant rate elongation type tensile tester (based on JISL 1913: general nonwoven 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.

(Measuring method of kinematic viscosity)

The measuring method of kinematic viscosity is "5. Kinematic viscosity test method", using a Canon-Fenske countercurrent viscometer, it measures at a test temperature of 40 degreeC.

(Method for measuring basis weight of gel lotion)

The method for measuring the basis weight of the gel lotion 3 is as follows.

(1) The area to be measured (not including the non-skin contact area) of the sheet member 2 to which the gel lotion 3 is applied is cut out with a sharp knife, for example, a replacement blade of a cutter to obtain a sample.

(2) The area of the sample: S (m 2 ) and the mass: M ₀ (g) are measured.

(3) The sample is stirred for at least 3 minutes in a solvent in which the gel lotion 3 is soluble, such as an aromatic solvent, such as xylene, to dissolve the gel lotion in the solvent.

(4) The sample is filtered on a filter paper whose mass is measured, and the sample is sufficiently 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 _{therefrom to calculate the mass of the sample after drying: M 1} (g).

(6) The basis weight G _BW (g/m2) of the gel lotion (3), the following formula:

G _BW (g/m2)=[M ₀ (g)-M ₁ (g)]/S(m2)

is calculated by In addition, in order to reduce the error, a plurality of samples are taken from a plurality of face masks so that the total area of the sample exceeds 100 cm 2 , the experiment is repeated a plurality of times, and the average value thereof is adopted.

Example

Hereinafter, although an Example of this invention is described, this invention is not limited to this Example.

1. Ingredients of gel lotion

In manufacturing the gel lotion in the face mask of an Example, the following commercial items were used as various compounding components, respectively.

(1) Styrene-based elastomer

(a) low molecular weight styrenic elastomer

·PIONIER GEL 12 PAO (weight average molecular weight: about 100,000, styrene-isoprene-styrene block copolymer (SIS), manufactured by Hansen&Rosenthal KG)

(b) high molecular weight styrenic elastomer

· Kraton G1654 (weight average molecular weight: about 200,000, styrene-ethylene-butylene-styrene block copolymer (SEBS), manufactured by Kraton Polymers)

(2) hydrocarbon oil

· PARLEAM 6 (Kinematic viscosity at 37.8°C: 20 mm2/s, hydrogenated polyisobutene, manufactured by Nichiyu Corporation)

· Sale 18 (Kinematic viscosity at 37.8°C: 300 mm2/s, hydrogenated polyisobutene, manufactured by Nichiyu Corporation)

(3) skin care agent

・Panaset 810S (Kinematic viscosity at 40.0°C: 13 mm2/s, glycerin fatty acid ester, manufactured by Nichiyu Corporation)

・Olive oil (viscosity at 20°C: 107 mPa·s, representative ingredient is oleic acid, DSP manufactured by Kokyo Foods & Chemicals 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 Pharmaceutical Industry Co., Ltd.)

(4) Others

(a) silicone oil

·SH200-100cs (Dimethylpolysiloxane having a kinematic viscosity of 100 mm2/s at 25°C, manufactured by Toray Dow Corning Co., Ltd.)

2. Preparation of gel lotion

The above various ingredients were put in a separable flask with each composition shown in Table 1 below, melt-mixed at 140° C. for 5 hours while stirring, and then cooled to obtain a gel lotion sample 1.

3. Evaluation method of gel lotion

Regarding the prepared gel lotion, the amount and component of the oil transferred to the skin were evaluated in the following manner. In addition, the following method evaluated the sensitivity evaluation regarding an itch.

(1) Method of measuring the amount of oil transferred to the skin

A method for measuring the amount of oil in the gel lotion that transfers to the skin is as follows.

(i) From the sheet member on which the gel lotion prepared in the above "2. Preparation of gel lotion" is applied, a range of 4 cm x 4 cm is cut out with a sharp blade, such as a replacement blade of a cutter, to obtain a sample. A plurality of samples are prepared.

(ii) The mass of each sample: M _T0 (g) is measured.

(iii) Each sample is placed on a 5 cm x 5 cm medicine wrapper, with the gel lotion facing the medicine wrapping paper, and left to stand for a predetermined time (eg: 15, 30, 90, 180, 300 minutes), respectively.

(iv) The mass of each sample after the oil of the gel lotion migrates to the medicine wrapper: M _T1 (g) is measured.

(v) the amount of transfer of gel lotion G _TW (g/m 2 ) for each sample, the following formula:

G _TW (g/m2)=[M _T0 (g)-M _T1 (g)]/(0.04×0.04)(m2)

is calculated by The experiment is performed multiple times (eg, 5 times), and the average value thereof is adopted.

(2) Identification method of oil components that migrate to the skin

The measurement method of the component of the oil of the gel lotion which transfers to the skin is as follows.

(i) Perform steps (i) to (iii) of the "method for measuring the amount of oil transferred to the skin".

(ii) Each drug wrapper to which the oil of the gel lotion has migrated corresponding to each sample is put into the screw tube, respectively. Then, in each screw tube, each drug wrapper is immersed in 1 mL of heavy chloroform for 15 minutes to extract oil.

(iii) Identify the oil in each deuterated chloroform by ^{H 1 -NMR.}

(3) Evaluation of itch sensitivity

The method of evaluation of sensitivity of itch is as follows.

(i) Prepare the face mask shown in FIGS. 1 to 2 to which the gel lotion prepared in "2. Preparation of gel lotion" is applied.

(ii) A face mask was put on a plurality of subjects, and the presence or absence of itching after a predetermined time (eg, 15, 30, 90, 180, 300 minutes) was evaluated according to the following criteria, and the average was obtained.

○: no itch, △: itch but not concerned, ×: itchy

4. Evaluation result of gel lotion

Table 2 below shows the evaluation results of the amount of oil transferred to the skin and the components of the oil transferred to the skin, and the evaluation results of itch sensitivity.

It was confirmed that the oil (skin care agent) was continuously transferred to the drug packaging that mimics the skin. And it was confirmed that the oil was continuously discharged even after 300 minutes (5 hours). In addition, it was confirmed that the skin care agent Panacet 810S, olive oil, jojoba oil, and macadamia nut oil were released as oils. In addition, as a sensitivity evaluation, it was confirmed that no itchiness was felt even after 300 minutes (5 hours).

In the above example, a gel was formed with PIONIER GEL 12 PAO (oil absorption-oriented type; low-molecular-weight elastomer), which is a styrene-based elastomer, Krayton G1654 (stretch-oriented type; high molecular weight elastomer), and Pallim 6 (hydrocarbon oil), have. Parim 18 (hydrocarbon oil) is acting as a skin tackifier. SH200-100cs (silicone oil) acts as a smoothing agent. Panacet 810S, olive oil, macadamia nut oil, and jojoba oil are skin care agents, classified as fatty acids or fatty acid esters, and have polarity (oxygen) in their molecular structure. Therefore, these skin care agents differ in compatibility with Sale 6. Therefore, although Paragraph 6 forms a gel with the styrene-based elastomer, these skin care agents easily bleed out on the surface of the gel and can efficiently transfer to the skin.

The skin care sheet of this invention is not limited to the face mask 1 of each embodiment mentioned above, A combination, a change, etc. are suitably possible within the range which does not deviate from the objective of this invention, a change, etc. are possible, and different types It can be applied to the skin care sheet of

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 nonwoven fabric or woven fabric and having an application region and a non-application region; and a gel lotion applied to the application region, the skin care sheet comprising:
The gel lotion includes a hydrocarbon oil and a skin care agent,
The sheet member,
It has breathability and elasticity,
a plurality of gel regions having the gel lotion and a non-gel region not having the gel lotion in the application region;
The skin care sheet is configured to be mounted while being stretched when mounted on the wearer's skin. According to claim 1,
The gel lotion is a skin care sheet further comprising a styrene-based elastomer. 3. The method of claim 1 or 2,
The air permeability of the application area when the skin care sheet is stretched by 10% is 0.15 to 0.5 KPa·s/m. 3. The method of claim 1 or 2,
The gel lotion in the plurality of gel regions protrudes outward in a thickness direction of the sheet member from a surface of the sheet member to which the gel lotion is applied. 3. The method of claim 1 or 2,
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 inside in the thickness direction of the sheet member. 6. The method of claim 5,
The gel lotion in the plurality of gel regions permeates from a surface of the sheet member to which the gel lotion is applied to an inner half of the sheet member in a thickness direction. 6. The method of claim 5,
The sheet member is a skin care sheet in which the plurality of gel regions can be visually recognized from a surface side opposite to a surface of the sheet member to which the gel lotion is applied. 3. The method of claim 1 or 2,
Each of the plurality of gel areas is disposed in the application area in an island shape or a line shape and spaced apart from each other in a plan view. 3. The method of claim 1 or 2,
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%. 3. The method of claim 1 or 2,
The skin care sheet is a face mask,
The face mask has at least one opening in the sheet member,
A basis weight of the gel lotion per unit area in a peripheral area of the at least one opening is greater than a basis weight of the gel lotion per unit area in an area other than the peripheral area.

Images