JP6668081B2 - Pack cosmetics and toiletries - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a pack cosmetic and a toiletry article in which collagen powder adheres to the surface of an adhesive layer formed on a base sheet.

  Unmodified collagen that maintains a triple helical structure has excellent moisture retention and excellent adhesion to human skin epidermal cells. For this reason, it is a compound that is desired to be formulated into cosmetics or developed for medical applications. As an example of using collagen as a cosmetic, there is a collagen-containing cosmetic comprising a solubilized collagen fiber and a solution thereof (Patent Document 1). The collagen solution is easily thermally denatured even at room temperature, but the solubilized collagen fiber is excellent in heat resistance because it is a dried product. By storing at normal temperature and mixing and dissolving solubilized collagen fibers in an aqueous medium at the time of use, unmodified collagen is used as a cosmetic.

  There is also a pack cosmetic in which a collagen aqueous solution is attached to a nonwoven fabric and dried (Patent Document 2). Offset printing of a yellowfin-derived collagen solution is performed on a silk-containing nonwoven fabric, followed by freeze-vacuum drying to obtain a dried sheet-like product.

  Furthermore, there is a pack cosmetic using a solubilized collagen fiber (Patent Document 3). A pack cosmetic comprising a fiber sheet in which a solubilized collagen fiber is implanted in a base fiber. When solubilized collagen fibers are used as a part of the raw fibers, it is not necessary to fix the collagen to the base fibers because the entanglement of the fibers prevents the collagen from falling off. It is said that the inhibition of water absorption and the decrease in flexibility of the base fibers are avoided, and the amount of collagen can be easily adjusted because the fibers are made from one another.

  There is also a carrier in which a collagen powder exhibiting a collagen triple helical structure after dissolution is carried on a substrate such as paper or cloth (Patent Document 4). In the examples, a dispersion in which a crude collagen precipitate having a collagen content of 12 to 50% by mass is dispersed is filtered through a base sheet and dried to support the collagen powder on the base sheet.

  In addition, there is also a pack cosmetic in which a partitioning section for partitioning an application surface into a plurality of regions is formed (Patent Document 5). Since facial skin has different properties depending on the site, the effects required for the pack cosmetics also differ from site to site. In order to meet this demand, the present invention provides a pack cosmetic that holds a cosmetic composition having a different composition or a different concentration for each site. This is a pack cosmetic in which a cosmetic composition is held on a base sheet, and a partition portion is formed of a member having low liquid permeability.

JP 2009-256356 A JP 2004-51521 A JP 2007-39438 A JP 2012-46512 A International Publication No. 2014/3183 JP 2005-95494 A

  If unmodified collagen can be prepared into a cosmetic in a dry state, it can be used after dissolving the collagen while maintaining the triple helical structure. However, the cosmetic described in Patent Literature 1 does not have a base sheet or the like that supports unmodified collagen, so that it causes liquid dripping when used, and is difficult to use easily.

  On the other hand, it is not easy to fix collagen to a base sheet in a non-denatured state. The cosmetic described in Patent Literature 2 involves applying a collagen aqueous solution to a nonwoven fabric, and then performing freeze-vacuum drying, which requires excessive energy in the drying process and is difficult to produce efficiently. Furthermore, when the nonwoven fabric is impregnated with a collagen aqueous solution and then dried, the fibers constituting the nonwoven fabric are coated with collagen in a film form. Even if it contains water at the time of use, the dissolution rate of the film-form collagen is low, and accordingly, the water absorption of the fibers is also hindered, and the elution rate of the collagen decreases. Therefore, development of a pack cosmetic which is easy to produce and has an excellent collagen utilization rate is desired.

  As a method of supporting a powdery substance on a base sheet, there is a body cleaning sheet in which powder having an average particle diameter of 1 to 150 μm is supported on a nonwoven fabric (Patent Document 6), and the powder is uniformly applied to the nonwoven fabric. After that, the powder is supported between the fibers by a projection roller, vibration by ultrasonic waves or the like, or a press method. However, when the collagen powder is carried by this method, the collagen powder enters the inside of the base sheet, so that it takes a long time to dissolve the collagen powder even if a solution is administered. Furthermore, since the solution of collagen powder has a high viscosity, it cannot migrate to the surface of the base sheet after dissolution, and collagen cannot be used effectively. In this regard, the same applies to the pack cosmetic described in Patent Document 3. Even if the solubilized collagen fiber is fixed to the base fiber by implantation, and the solution is administered, the solution does not easily penetrate into the interior of the fiber sheet, and it takes time to dissolve the collagen fiber. Therefore, development of a pack cosmetic having excellent solubility and elution rate of collagen is desired.

  In the example of Patent Document 4, the dispersion of the crude collagen precipitate is filtered through the base sheet and dried to support the collagen powder on the base sheet. However, the collagen powder supported on the base sheet is May be detached from the base sheet due to impact or the like. On the other hand, when the collagen powder is kneaded with a binder and applied to a substrate, the surface of the collagen powder is coated with the binder, so that contact with the dissolving solution is inhibited, the dissolution rate of collagen is reduced, and the dissolution rate is also increased. May decrease. Furthermore, if the binder is a water-containing substance, the collagen powder is dissolved by this water to reduce the unmodified collagen content, or when avoiding this, it is substantially difficult to dry by a method other than freeze-drying. Becomes

  On the other hand, native collagen is not easy to produce and is expensive. If an adhesive layer is formed on the surface of the base sheet and the collagen powder is fixed on the surface of the adhesive layer, a high-concentration collagen solution layer can be formed on the surface of the base sheet after the addition of the solution. it can. However, since the collagen powder has no tackiness, the amount of immobilization on the adhesive layer and thus on the substrate sheet may not be stable, and this tendency is particularly strong when the area of the adhesive layer is small.

  In addition, since the amount of collagen required for the pack cosmetic varies depending on the site to be applied, such as the cheek, neck, and area around the eyes, it is convenient if the amount of adhesion can be easily changed according to the required collagen concentration. However, Patent Document 3 discloses a method in which a collagen fiber and a base fiber are blended. Patent Document 4 discloses a method in which a binder composition obtained by kneading collagen powder or a collagen dispersion is applied to a base material. Difficult to change. In Patent Document 5, in order to hold a cosmetic composition having a different composition for each site, a liquid-impermeable or liquid-semipermeable partition must be formed on the application surface, which is not easy to manufacture. Therefore, development of a pack cosmetic which can easily adjust the amount of collagen attached to a predetermined site is desired.

  Further, as shown in FIG. 1 of Patent Document 5, the pack cosmetic to be applied to the face is generally formed into a substantially circular face shape. Since a cosmetic component or the like is attached to a long base sheet and cut out into a substantially circular shape, the corners are discarded portions. However, native collagen is not easy to produce and is expensive. Therefore, development of a pack cosmetic using a small amount of unmodified collagen powder efficiently is desired. In addition, the requirement for the skin to be moisturized is not limited to the face, and the same applies to toiletries.

  In view of the above situation, an object of the present invention is to provide a pack cosmetic or toiletry article in which collagen powder is adhered to a base sheet.

The present inventors have studied the pack cosmetics in detail, and found that when an adhesive layer is formed on a base sheet and collagen powder is adhered to the surface thereof, the skin is not excessively adhered to the base sheet. That the collagen layer can be used efficiently, and that when the adhesive layer is dispersed and formed, the amount of collagen powder to be adhered to the base sheet can be adjusted by changing the dispersion ratio of the adhesive layer. It has been found that adjusting the average particle diameter of the above can stabilize the amount of collagen powder attached, and the like, and completed the present invention.

That is, the present invention is a pack cosmetic in which collagen powder is adhered to an adhesive layer on the surface of a substrate sheet or a surface-treated substrate sheet,
The adhesive layer is formed by dispersing, pre Symbol collagen powder is intended to be attached to the surface of the adhesive layer and provides a pack cosmetic.

  Further, the present invention provides the pack cosmetic, wherein the collagen powder adhered to the adhesive layer has an average particle diameter of 1 to 500 µm and contains 1 to 80% by mass of a collagen powder having a particle diameter of 10 µm or less. Offer a fee.

Further, the present invention provides the pack cosmetic, wherein the collagen powder is a dried product of unmodified collagen .

The present invention also provides the pack cosmetic, wherein the area of the adhesive layer to which the collagen powder adheres is 0.01 to 30 mm ² per adhesive layer.

  The present invention also provides the pack cosmetic, wherein the adhesive layer is formed by dispersing the adhesive sheet in an area of 1 to 60% per area of the base sheet or the surface-treated base sheet. Things.

The present invention also provides the pack cosmetic, wherein the base sheet has a basis weight of 15 to 180 g / m ² and a water retention of 500 to 2,000%.

  The present invention also provides the pack cosmetic, wherein the base sheet has an elongation percentage when wet of 15 to 180%.

  The present invention also provides the pack cosmetic, wherein the adhesive constituting the adhesive layer is a hydrophilic adhesive.

Further, the present invention is a toiletry article in which collagen powder is adhered to an adhesive layer on the surface of a substrate sheet or a surface-treated substrate sheet,
The adhesive layer is formed by distributed,
The collagen powder provides a toiletry article to be attached to the surface of the adhesive layer.

  In the pack cosmetics and toiletries of the present invention, since the collagen powder is attached to the surface of the adhesive layer formed on the base sheet, the effect of collagen can be used efficiently. Since collagen powder is excellent in thermal stability, it can store at room temperature pack cosmetics and toiletries to which collagen constituting a triple helical structure is attached.

FIG. 4 is a diagram illustrating a screen printing pattern used for screen printing according to the first exemplary embodiment. FIG. 2A shows an example of a print pattern when an adhesive layer is formed on a stretchable base sheet, and FIG. 2B shows a case where collagen powder is adhered to the print pattern of FIG. 2A. FIG. 4 is a view for explaining a collagen powder attachment portion when a base sheet is stretched into a face shape after impregnating a pack cosmetic with a solution. FIG. 3 is a diagram showing the results of a differential scanning calorimeter (DSC) of the collagen powder used in Example 1. FIG. 2 is a diagram showing circular dichroism of a collagen solution obtained by re-dissolving collagen powder used in Example 1. A base sheet (FIG. 5 (A)) having an adhesive layer used in preparing the pack cosmetic in Example 1 and a pack cosmetic prepared using this base sheet (FIG. 5 (B) 7) is an electron microscope image of FIG. The base sheet (FIG. 6A) on which the adhesive layer was formed and used in preparing the pack cosmetic in Example 2 and the pack cosmetic prepared using this base sheet (FIG. 6B 7) is an electron microscope image of FIG. It is a figure which shows the electron microscope image of the pack cosmetics prepared in Example 3. A base sheet (FIG. 8 (A)) having an adhesive layer used for preparing a pack cosmetic in Example 4 and a pack cosmetic prepared using this base sheet (FIG. 8 (B) 7) is an electron microscope image of FIG. FIG. 4 is a view showing an electron microscope image of the pack cosmetic prepared in Comparative Example 1. It is a figure which shows the electron microscope image of the pack cosmetics prepared by impregnating the base material sheet with the collagen solution prepared in Comparative Example 2, and then air-drying. FIG. 10A is an enlarged view of 50 times, and FIG. 10B is an enlarged view of 100 times. It is a figure which shows the electron microscope image of the pack cosmetics prepared by impregnating the base material sheet with the collagen solution prepared in Comparative Example 3, and then freeze-drying. FIG. 11A is an enlarged view of 50 times, and FIG. 11B is an enlarged view of 100 times. FIG. 3 is a diagram showing CD spectra of an extract for measuring eluted collagen and a solubilized collagen solution used in Examples and Comparative Example 1.

  A first aspect of the present invention is a pack cosmetic in which collagen powder is adhered to an adhesive layer on the surface of a substrate sheet or a surface-treated substrate sheet, wherein the collagen powder adheres to the surface of the adhesive layer. It is a packaged cosmetic. Further, a second aspect of the present invention is a toiletry article in which collagen powder is attached to an adhesive layer on the surface of a substrate sheet or a surface-treated substrate sheet, wherein the adhesive layer is a unit of the substrate sheet. It is a toiletry article formed by dispersing in accordance with the amount of collagen powder required per area, wherein the collagen powder is attached to the surface of the adhesive layer. Hereinafter, the present invention will be described in detail.

(1) Collagen powder Collagen is a kind of protein, and is a generic term for a helix of three polypeptide chains. In the present invention, collagen collected from dermis, tendon skin, and other collagen-containing tissues such as cows, pigs, chickens, ostriches, horses, and fishes can be used. When collagen is extracted by heat treatment, the collagen is thermally denatured and the unique triple helical structure is broken. The collagen preferably used in the present invention is a native collagen constituting a triple helix structure in a solution. Methods for producing native collagen are known. Collagen powder used in the present invention is, for example, freeze-dried, fiberized, and powdered from a material extracted from an animal bone, skin, or the like by a solubilization method using an alkali treatment, an acid treatment, or an enzyme treatment. And those manufactured by any other method.

  The “collagen powder” in the present invention means a dried product of fine native collagen. In addition to powder, it may be fine, particulate, fine, granular, crushed, or the like. The present invention is to produce a pack cosmetic that can be stored at room temperature and has excellent solubility by attaching collagen powder having a larger surface area per unit mass than fibrous collagen or the like to a base sheet. Therefore, for example, fibrous collagen obtained by discharging a collagen solution in a fibrous form may be finely cut, pulverized, or crushed, or a lyophilized product of a collagen solution may be pulverized or crushed. It may be a dried, pulverized or crushed point precipitate or salted-out precipitate, a spray-dried collagen solution, or any other.

  In the present invention, since the collagen powder is used for cosmetics and toiletries, it is necessary that the collagen powder swells or dissolves promptly when a lotion or other aqueous solvent is added. The average particle size of the collagen powder used in the present invention is 1 to 500 μm, preferably 2 to 500 μm, more preferably 4 to 400 μm, and particularly preferably 4 to 300 μm. A fine collagen powder, for example, a collagen powder having an average particle diameter of about 1 to 5 μm prepared by spray-drying a collagen solution may form a gel-like mass that does not dissolve when poured into water. However, in the present invention, since the collagen powder is attached to the surface of the adhesive layer, the formation of a gel-like mass at the time of dissolution is suppressed even if the powder is fine, so that the powder is rapidly dissolved. On the other hand, if the average particle size exceeds 500 μm, it may be difficult to adhere to the adhesive layer, or the collagen powder may peel off after the adhesion. In the specification of the present application, the particle diameter of the collagen powder is a value measured by an electron microscope, and the longer diameter of the electron microscope image is defined as the particle diameter of the collagen powder. The average particle diameter is an average of the particle diameters of all the collagen powders included in the ten visual fields.

  In the present invention, collagen powder having a particle size of 10 μm or less may further contain 1 to 80% by mass, preferably 3 to 50% by mass, more preferably 5 to 20% by mass. Since collagen powder has no tackiness, the amount of adhesion may vary when it is adhered to the surface of the adhesive layer. However, it has been found that the adhering amount is stabilized by mixing a predetermined amount of collagen powder having a particle diameter of 10 μm or less. It is estimated that a small amount of powder having a particle diameter of 10 μm or less sneaks between the large powders and adheres to the adhesive layer, whereby a predetermined amount can be efficiently adhered. Therefore, even a fine collagen powder which has been difficult to use to form a gel-like mass can be used as a pack cosmetic. On the other hand, if it exceeds 80% by mass, the required amount may not be adhered. In order to make use of the feel and feel of the base sheet, the area of the adhesive layer is preferably smaller, but in particular, the adhesive layer having such a small area is excellent in adhesion. The content of the collagen powder of 10 μm or less can be determined from the particle size distribution.For example, a sieve in which 10 μm collagen particles remain is used, and the percentage of the mass of the permeated mass with respect to the total mass is determined. The content of collagen powder having a diameter of 10 μm or less may be used.

(2) Base sheet The material of the base sheet or the base sheet that has been surface-treated in advance is paper, natural fiber, synthetic fiber, synthetic resin, or a composite thereof, which can be used for pack cosmetics and toiletries. Can be suitably used. The synthetic fiber may be a hydrophilic fiber or a hydrophobic fiber. For example, polyester fibers such as polyethylene terephthalate (PET), acrylic fibers such as polyacrylonitrile, polyamide fibers, polyolefin fibers such as polypropylene (PP) and polyethylene (PE), polyurethane fibers, polyvinyl alcohol fibers, There are synthetic fibers such as polyfluoroethylene fibers. Regenerated fibers such as rayon, polynosic, cupra, etc., semi-synthetic fibers such as acetate, and fibers composed of modified products or copolymers thereof may be used alone or in combination of two or more. Natural fibers include cotton, hemp, wool, silk and the like. As the shape, a sheet-shaped material such as a woven fabric, a knitted fabric, a nonwoven fabric, a film, a foam, a laminate or a composite thereof can be widely used.

  As the paper that can be used as the base sheet in the present invention, paper that can be produced by a known wet papermaking method can be used. Examples of the fiber constituting paper include wood pulp such as softwood bleached kraft pulp (NBKP), hardwood bleached kraft pulp (LBKP), softwood bleached sulphite pulp (NBSP), and thermomechanical pulp (TMP); Non-wood pulp such as bamboo, straw, kenaf, mitsumata, mulberry, cotton, etc .; Modified pulp such as cationized pulp, mercerized pulp; Synthetic made of resin such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) Fibers and the like can be mentioned, and one of these can be used alone or in combination of two or more. In the paper, if necessary, other components other than fiber, for example, starch, polyacrylamide, a paper strength enhancer or fixing agent such as polyamine polyamide epichlorohydrin, a sizing agent, a filler, a drainage retention improver, a waterproofing agent, One or more of a fixing agent, an antifoaming agent, a slime control agent and the like may be contained.

  Examples of the woven fabric include plain weave, twill weave, satin weave, woven weave, jacquard weave, and overlap weave. Examples of the knitted fabric include sheet knitting, milling, smooth knitting, fawn knitting, two-way knitting, half knitting, and satin knitting. The non-woven fabric is formed by bonding fleece formed by air laid method, carding method, wet method, spun bond method, etc. by needle punch method, spun lace method, steam jet method, stitch bond method, chemical bond method, thermal bond method. Any of nonwoven fabrics and the like manufactured by the above method may be used. Preferably, it is a nonwoven fabric manufactured by a spunlace method because of its excellent touch.

  As the film, ester resins such as polyester and acetate, olefin resins such as polyethylene and polypropylene, and acrylic resins such as acrylic acid and methacrylic acid can be used. From the viewpoint of hydrophilicity, it is preferable to use a water-absorbing polymer such as polyacrylic acid alone or a mixture of the water-absorbing polymer and another resin to form a film.

  Foams include polyurethane resins, olefin resins such as polyethylene and polypropylene, polystyrene resins, polymethyl methacrylate, polyvinyl chloride, polyamide, unsaturated polyester, phenol resins, rubber resins such as polybutadiene and synthetic polyisoprene. And cellulosic resins. Sheets made of a polyurethane-based resin or a polyolefin-based resin are preferred because of their excellent flexibility. The cells constituting the foam may be closed cells or open cells as long as a predetermined water retention amount can be secured.

The base sheet preferably has a basis weight of 15 to 180 g / m ² , more preferably 30 to 100 g / m ² . The water retention is preferably from 500 to 2,000%, more preferably from 500 to 1,500%. Within this range, it is possible to impart flexibility to the pack cosmetic after impregnation with the dissolving solution, and to dissolve the collagen powder adhered thereto. The basis weight of the base sheet is a numerical value obtained by measuring the mass per unit area according to JIS L1913 6.2, and the water retention is a numerical value measured according to JIS L1913 6.9.2.

  The base sheet may be a stretchable material. In the case of a stretchable material, a stretchable material having a stretch ratio of 15 to 200%, more preferably 40 to 180% when wet in the direction of actual use can be suitably used. When the base sheet is stretched, the pack cosmetic can be stretched along the shape of the face, so that it is excellent in sticking properties and usability. In addition, the top, bottom, left, and right of the rectangular pack cosmetic can be appropriately stretched to form a substantially elliptical facial shape. When a rectangular pack cosmetic is manufactured from a long raw material, the amount of waste can be reduced as compared with the case where a face-shaped pack cosmetic is manufactured. In addition, if the base sheet having excellent elasticity is used, even when the base sheet is attached to, for example, an elbow or a knee, the flexibility of the elbow or the knee is not inhibited. The elongation percentage is a numerical value obtained by measuring the elongation percentage when wet according to JIS L1913 6.3.2.

  The base sheet used in the present invention may be a base sheet that has been subjected to a surface treatment in advance. Adhesiveness of the adhesive layer can be ensured. When a base sheet on which an undercoat layer is formed is used as the surface treatment, the adhesion between the base sheet and the adhesive layer is improved. As a resin for forming such an undercoat layer, for example, an acrylic resin, a urethane resin, a fluorine resin, a silicone resin, or the like can be used alone or as a mixture. These undercoat layers are coated with a solution of a resin or a resin composition by a known technique such as a gravure coating method, a reverse roll coating method, a roll coating method, a dip coating method, and dried, and then, if necessary, an ultraviolet ray, It can be formed by irradiating an electron beam or the like and curing. The thickness of the undercoat layer is preferably from 0.5 to 5 μm, and more preferably from 1 to 3 μm. If the thickness of the undercoat layer is small, sufficient adhesion may not be obtained in some cases. In addition, as the surface treatment, one subjected to antistatic processing, flexible processing, or the like may be used, or an electromagnetic wave treatment such as a corona discharge treatment, an atmospheric pressure plasma treatment, or an ultraviolet treatment may be used.

  Further, the base sheet may contain other cosmetics and other components in advance. Such components include vitamins, UV absorbers, preservatives, and the like.

(3) Adhesive As the adhesive used to form the adhesive layer, those capable of adhering collagen powder in a non-denatured state can be widely used, and any of a hydrophilic adhesive and a hydrophobic adhesive can be used. Can also be suitably used. When used, it may be used in a water-containing state or in a non-aqueous state containing no water. However, when used in a water-containing state, it is preferable to operate at 50 ° C. or lower after contact with collagen. This is for preventing the collagen powder from being denatured after being dissolved in the water contained in the adhesive.

  Examples of such adhesives include gelatin, guar gum, tragacanth gum, xanthan gum, gum arabic, locust bean gum, gum arabic, alginic acid, oxidized starch, starch, α-starch and derivatives thereof, and cellulose derivatives (eg, carboxymethylcellulose, acetylcellulose and hydroxy Water-soluble polymer polysaccharides such as alkyl cellulose), polyvinyl alcohol (PVA), modified PVA, copolymers of unsaturated dicarboxylic acids, acrylic acid and derivatives thereof, polyethers (eg, polyethylene glycol, polypropylene glycol, etc.), Water-soluble polymers such as vinyl derivatives, terpenes, and synthetic resin emulsions, polyester resin, acrylic resin, polymethyl methacrylate, silicone resin, and urethane Down resin, polyamide resin, may be used vinyl chloride acetate resin, and various copolymers such as ethylene-vinyl acetate copolymer. In the present invention, these can be used alone or in combination of two or more.

  In the present invention, a hydrophilic adhesive such as gelatin, PVA, or an acrylic resin can be preferably used. This is because when the pack cosmetic is impregnated with the dissolving solution, the adhesive absorbs the dissolving solution and becomes flexible, and the skin is less irritating.

  Moreover, you may use together a hydrophilic adhesive and a hydrophobic adhesive as an adhesive. For example, the hydrophilic adhesive layer may be formed on a base sheet in advance, and a hydrophobic adhesive layer may be formed on the hydrophilic adhesive layer. The hydrophilic adhesive layer functions as an undercoat layer, and can improve printability.

  The viscosity of the adhesive at the time of bonding the collagen powder is preferably from 100 to 7,000 mPa · s, more preferably from 200 to 4,000 mPa · s, and even more preferably from 800 to 3,000 mPa · s. If it is less than 100 mPa · s, the adhesive easily penetrates into the base sheet, so that an adhesive layer is not formed on the surface of the base sheet, and it may be difficult to adhere the collagen powder. On the other hand, if it exceeds 7,000 mPa · s, the viscosity may be too high and it may be difficult to form an adhesive layer on the substrate sheet.

(4) Adhesive layer In the present invention, the adhesive layer is formed on the surface of the substrate sheet or the surface-treated substrate sheet. By adjusting the area of the adhesive layer formed on the base sheet, the amount of collagen powder adhered per unit area of the base sheet can be adjusted. The amount of collagen powder can be adjusted by adjusting the amount of collagen powder to be attached to the adhesive layer. Since the collagen powder has no adhesiveness or tackiness in a dry state, one collagen powder layer is formed and fixed on the surface of the adhesive layer. The amount of collagen powder that can adhere to the adhesive layer can be roughly estimated according to the particle size and the particle size distribution. An adhesive layer is formed on the surface of a substrate sheet or a surface-treated substrate sheet by coating or the like, and a desired amount of collagen powder is dispersed and adhered to the surface of the adhesive layer, whereby the pack cosmetic of the present invention is formed. Fees.

  The adhesive layer may be formed on the entire surface of the base sheet, or may be formed dispersed on the surface of the base sheet. The adhesive layer formed in a dispersed manner may be a mode in which the adhesive layer is discontinuously scattered, or a mode in which straight lines or curves are continuous. As a continuous mode, a ruled line formed vertically and horizontally at predetermined intervals on the surface of the base material sheet can be exemplified. Examples of the dotted shape include a dot, a circle, a triangle, a square, a floral pattern, a star pattern, a character pattern, and any other shapes. In any case, the adhesive layer can be uniformly formed on the surface of the base sheet. Preferably, it is an aspect which is discontinuously scattered. The texture of the base sheet is less likely to be impaired.

When the dot-shaped adhesive layer is formed by dispersing the adhesive layer on the base sheet, the area per adhesive layer is 0.01 to 30 mm ² , preferably 0.02 to ²⁰ mm ² , and particularly preferably 0.02 to ²⁰ mm ² . 10 mm ² . When the area per adhesive layer is 0.5 mm ² and the area of the adhesive layer is 8% of the area of the base sheet, the number of the adhesive layers per cm ^{2 of the} base sheet is 16 on average. . In this embodiment, a circular adhesive layer having a diameter of 0.8 mm is formed at intervals of 2 mm. Collagen powder adheres to the surface of the base sheet and expands in volume due to water content, so when it is attached to the skin etc., the collagen spreads evenly on the base sheet, providing a sufficient moisturizing effect. it can. If the area per adhesive layer is less than 0.01 mm ² , it may be difficult to attach collagen powder. In addition, it is possible to form an adhesive layer exceeding 30 mm ² , but there is little further enhancement of the moisturizing property and other effects.

  The area of the adhesive layer when the adhesive layer is dispersed and formed is 1 to 60%, preferably 2 to 50%, particularly preferably 3 to 40% per area of the base sheet or the surface-treated base sheet. % Range. When the amount is less than 1%, the amount of the collagen powder attached is small, and the moisture retention and other effects of the collagen powder may not be sufficiently obtained. Further, since the distance between the adhesive layers formed by dispersion is increased, it may be difficult to make the collagen concentration uniform after dissolution. On the other hand, since the volume of the collagen powder expands due to the water content, even if the collagen powder exceeds 60%, the influence on the uniformity of the collagen concentration is small, and the moisture retention and other effects are not further enhanced. In addition, the area of the adhesive layer per area of the base sheet is evaluated in advance by evaluating the relationship between the area of the adhesive layer and the amount of collagen powder adhering to the adhesive layer, and the amount of collagen powder adhering per area of the base sheet. Can be estimated from

  In addition, the number and area of the adhesive layers scattered need not be the same in all areas of the pack cosmetics and toiletries. If you want to increase the concentration of collagen in the cheeks or forehead when using it as a pack cosmetic, increase the number and area of the adhesive layer at the corresponding location, narrow the gap between the adhesive layers, etc. The adhesive layer may be dispersed non-uniformly.

(5) Pack cosmetics Collagen has high hygroscopicity and its solution has high viscosity, but collagen powder obtained by drying collagen into powder has no adhesiveness. The pack cosmetic of the present invention has collagen powder adhered to the surface of the adhesive layer, meaning that the collagen powder comes into contact with the adhesive layer to form approximately one collagen powder layer. When the pack cosmetic is impregnated with the dissolving liquid or the dissolving liquid is sprayed on the pack cosmetic, each collagen powder comes into contact with the dissolving liquid, and the collagen powder can be dissolved without forming a gel-like mass. Moreover, since the collagen after dissolution has a high viscosity, the migration to the substrate sheet is slow, and the collagen is localized on the surface of the substrate sheet. Therefore, even a small amount of collagen can be efficiently stuck to the skin surface.

  The adhesive layer is formed by dispersing on the surface of the base sheet in accordance with the amount of collagen powder required per unit area of the base sheet.

  The amount of the collagen powder adhering to the pack cosmetic or toiletry article of the present invention can be appropriately selected according to the target site where the pack cosmetic or the like is used, such as the face, neck, hands, feet, elbows, knees, and the like. . The collagen powder is not limited to one that is uniformly dispersed in a pack cosmetic or the like. For example, in the case of a face, when it is desired to increase the collagen concentration in the cheek, the amount of collagen powder in the portion corresponding to the cheek may be larger than that in other portions and may be attached. Since the collagen powder is adhered to the adhesive layer to be dispersed, there is no component such as a partition part for dividing the application region, and the collagen concentration at a desired portion is easily controlled as a pack cosmetic. I have.

  On condition that the above conditions are satisfied, another powdery cosmetic may be attached to the adhesive layer in addition to the collagen powder. Such other powders include silk powder, cellulose powder, hyaluronic acid, amino acids, oligosaccharides, vitamin derivatives, ceramides, plant extracts and the like.

  The pack cosmetic of the present invention can be appropriately cut out and used according to the site where the pack cosmetic is to be applied. In the case of a pack cosmetic to be applied to the face, the eyes, nose, and mouth may be further cut out, or a cut may be formed for convenience in use.

  This pack cosmetic is used by adding a dissolving solution at the time of use, moistening the pack cosmetic, and attaching it to the skin. Alternatively, the solution may be applied to the skin, the collagen powder side of the pack cosmetic may be stuck to the skin, and the collagen powder may be swollen or dissolved before use.

  The pack cosmetic of the present invention may be individually packaged for each use amount, and the solution may also be individually packaged. When the dissolving solution is poured into the individually packaged container of the pack cosmetic at the time of use to dissolve the collagen powder, undenatured collagen can be used stably. The collagen solution requires low temperature storage because of its low thermal stability. However, the pack cosmetic of the present invention uses collagen powder having excellent heat resistance, so that it can be stored at room temperature.

(6) Dissolving Solution The dissolving solution is capable of dissolving collagen powder. Since it is used as a pack cosmetic, it can be widely used without irritation to the skin or the like. Generally, it is a liquid mainly composed of water such that the pH in a state in which collagen is dissolved deviates from the isoionic point of collagen, and may be water alone. Since the solubility varies depending on the type and average particle diameter of the collagen powder to be used, the solubility of the collagen powder adhering to the base sheet is evaluated in advance, and a suitable solution is used. Usually, it is a solution having a pH of 5.5 to 8.5, more preferably a pH of 5.5 to 7.5, for safety on the skin and the like. Adjustment of pH can be performed with an inorganic or organic acid, and may be a buffer solution. In addition, you may use lotion as a solution.

  The solution may contain other cosmetics as long as the solubility of collagen is not inhibited. Such cosmetics include whitening ingredients such as placenta extract, kojic acid, rucinol, arbutin, ellagic acid, chamomile extract, hyaluronic acid, propylene glycol, glycerin, butanediol, pentanediol, polyethylene glycol, urea, lactate, pyrrolidone. There are humectants such as carboxylate, plant extracts such as aloe extract, vitamins, ultraviolet absorbers and preservatives.

(7) Toiletries In the present invention, "toiletries" is an article used for the purpose of washing and eating the body. The pack cosmetic is generally used for face care, but is not limited to the face, and can be used for the purpose of skin care of the whole body such as hands, knees, heels, and neck.

(8) Manufacturing Method The pack cosmetic of the present invention can be manufactured by forming an adhesive layer on the surface of a base sheet and dispersing and attaching collagen powder to the surface. An adhesive is applied to one side of a base sheet appropriately selected according to the application, or a known printing such as screen printing, roll printing, coating, transfer printing, gravure printing, flat plate printing, letterpress printing, etc. Form by technique.

For example, when preparing a pack cosmetic having collagen powder adhered at 100 mg / m ^{2 under} the condition that collagen powder adheres to a dot-shaped adhesive layer having a diameter of 1 mm at a concentration of 1 μg, the base should be 10 particles / cm ^2. What is necessary is just to form a dot-shaped adhesive layer having a diameter of 1 mm uniformly on the material sheet. Similarly, by appropriately selecting the area of the adhesive layer, the distance between the adhesive layer and the adhesive layer, the particle size of the collagen powder, the type of the adhesive, etc., the collagen powder per unit area of the substrate sheet is The amount of adhesion can be adjusted. When it is desired to increase or decrease the amount of collagen powder in accordance with the application site of the pack cosmetic or the like, the area of the adhesive layer or the distance between the adhesive layers is changed to change the amount of collagen powder at a predetermined location. Can be changed. FIG. 1A shows an example of a dot-shaped adhesive layer in which an adhesive layer having a diameter (b) is formed so as to form an equilateral triangle having one side (a). 1 shows an embodiment in which the adhesive layer shown in FIG.

  Further, an adhesive layer can be formed on a stretchable base sheet. For example, an adhesive layer can be formed on a base sheet having a stretching ratio of 120% in the vertical and horizontal directions so that the amount of collagen powder in each part becomes constant when the substrate is stretched in the vertical and horizontal directions along the facial shape. For example, as shown in FIG. 2 (A), a non-uniform adhesive layer is formed on a square base sheet so that the central adhesive layer becomes dense, and collagen powder is adhered to the adhesive layer to produce a pack cosmetic. I do. After the pack cosmetic is impregnated with the solution, for example, as shown in FIG. 2 (B), the pack cosmetic is stretched vertically and horizontally into a facial shape. The amount of collagen powder per unit area when stretched into a facial shape becomes substantially uniform over the entire pack cosmetic.

  When the base sheet has the property of being stretched, it can be deformed into an elliptical shape by extending substantially the center of the four sides of the square base sheet. The adhesive layer can be formed by dispersing the adhesive layer so that the amount of the collagen powder becomes a desired concentration when it is expanded into an elliptical shape. The dispersion method may be such that the spacing between the dot-shaped adhesive layers of the same size is adjusted to change the dispersion density, or the size of the dot-shaped adhesive layer is changed. When a base sheet extending 120% from the center of the base sheet vertically and horizontally is used, for example, the dot area is increased by 120% from the center of the base sheet toward the center of each of the four sides. When the adhesive layer is formed, it is possible to manufacture a pack cosmetic in which the collagen powder becomes uniform when the base sheet is stretched.

  Collagen powder is sprayed on the substrate sheet on which the adhesive layer has been formed, and if necessary, the substrate sheet is pressed to fix the collagen powder, and the adhesive layer is cured to fix the adhered collagen powder. The collagen powder that has been sprayed on the portion other than the adhesive layer can be removed by suction, air blowing, vibration, or other methods. In addition, it is also possible to place the collagen powder in a spot shape on the adhesive layer, cure the adhesive layer, and prepare a pack cosmetic to which the collagen powder adheres.

  The curing of the adhesive is performed by a dry heat treatment, for example, when an acrylic acid-based adhesive is used. The collagen powder adheres to the surface of the adhesive by heating, and the adhesive layer is hardened by subsequent cooling. Although collagen powder is excellent in heat resistance, it is preferable to perform heating at 180 ° C. or lower to avoid denaturation.

  On the other hand, when a gelatin adhesive is used as the adhesive, the temperature of the substrate sheet after the formation of the adhesive layer is adjusted according to the melting point of the gelatin used. For example, when the melting point of the gelatin-based adhesive is 60 ° C. or higher, the temperature is lowered to 20 to 40 ° C. after forming the adhesive layer, and the collagen powder is adhered while the adhesive is in a gel state. . Thereafter, the adhesive layer is cured by air drying.

  After performing the adhesive layer forming step, the collagen powder attaching step, and, if necessary, the drying step using a long base sheet, the pack cosmetic can be manufactured by cutting out the sheet into a predetermined shape. At that time, in the case of application to be attached to the face, it can be cut out into an elliptical shape or other facial shapes or squares. In particular, when a stretchable base sheet is used and the collagen powder is uniformly attached in a state where the base sheet is stretched, the collagen powder may be cut into a square. It is excellent in that the discarded portion can be reduced during manufacturing. Even with such a rectangular pack cosmetic, it can be formed into a facial shape by stretching a predetermined portion after impregnating with the solution, and can be adjusted to a shape suitable for its own face.

  Next, the present invention will be described specifically with reference to examples, but these examples do not limit the present invention at all.

(Example 1)
A nonwoven fabric having a thickness of 380 μm (trade name “Cot Ace”, manufactured by Unitika Ltd., basis weight 60 g / m ² , water retention rate 800%, elongation rate when wet 170%) was used as a base material sheet, and a gelatin-based adhesive was used. 100 g of Nippi (trade name "Gelatin AP-270") was charged into 200 ml of a dissolving solution (pH 7 to 8), heated to a temperature of 60 ° C and dissolved to prepare an adhesive solution (viscosity of 1,800 mPa · s at a temperature of 60 ° C). ) Was prepared. While maintaining the temperature of the adhesive liquid at 60 ° C., each vertex has a diameter (b) of 0.6 mm at each apex so as to form an equilateral triangle having a side (a) of 2.3 mm according to FIG. An adhesive layer was formed on the surface of the base material sheet by screen printing using a screen (see FIG. 1B) on which dots were uniformly formed. After the application of the adhesive, collagen powder (average particle diameter: 158 μm, content of less than 10 μm, 5% by mass) was sprayed using a scattering device in which the mounting table of the adhesive application sheet was cooled to a temperature of 25 ° C. After spraying, the base sheet was inverted to remove collagen powder that did not adhere to the adhesive layer, and then air-dried to produce a pack cosmetic.

  The denaturation temperature of the collagen powder used was measured with a differential scanning calorimeter (DSC). FIG. 3 shows the measurement results. When the temperature was gradually increased, a peak of the calorific value change was observed at 112.4 ° C. As a control, a collagen solution having a concentration of 7.2% by mass was prepared and measured in the same manner. As a result, the peak of the calorie change was 33.0 ° C. Further, 5 mg of the used collagen powder was redissolved in 1 ml of 10 mM acetic acid, and the circular dichroism (CD) of the collagen solution adjusted to a final concentration of 0.1 mg / ml with 5 mM acetic acid was measured at 20 ° C. FIG. 4 shows a measurement chart of the collagen powder used in Example 1, an unmodified collagen solution having a concentration of 0.1 mg / ml as a control, and a denatured collagen solution obtained by thermally denaturing the collagen solution at a temperature of 100 ° C. for 3 minutes. Shown in When the wavelength is increased to 200 to 250 nm, a change pattern of the molecular ellipticity is observed, but the pattern of the solution obtained by re-dissolving the collagen powder substantially matches the curve of the undenatured collagen solution. Has been maintained.

  FIG. 5 (A) shows an electron micrograph of the base sheet on which the adhesive layer is formed, and FIG. 5 (B) shows an electron micrograph of the pack cosmetic in which collagen powder is fixed.

  About the obtained pack cosmetic, the average particle diameter of the collagen used, the type of adhesive, the area of the adhesive layer per piece, the area ratio of the adhesive layer to the base sheet, the amount of collagen carried by the pack cosmetic, The eluted collagen amount, collagen elution rate, triple helix content, collagen content, native rate, etc. were evaluated. Each measurement was as follows. The results are shown in Tables 1, 2 and 3.

(1) Average Particle Diameter of Collagen Powder The major axis of the electron microscope image was used as the particle diameter of the collagen powder, and the particle diameters of all the collagen powders included in the ten visual fields were averaged to obtain the average particle diameter. In addition, using a 10 μm sieve, the mass of the passing amount with respect to the total mass was calculated as a percentage to obtain the content of small particles (powder having a particle size of 10 μm or less).

(2) Amount of Supported Collagen The pack cosmetic was cut into 50 mm x 50 mm to obtain test pieces. This test piece was housed in a plastic bag of 60 mm x 85 mm, 3 ml of 1% citrate buffer (pH 6.5) was put therein, and left at 40 ° C for 2 hours. Thereafter, the mixture was centrifuged at 2,000 rpm for 3 minutes to obtain an extract. From this extract, the protein amount (I) was measured by the microburette method. In order to cancel the influence of the adhesive, the substrate sheet before the attachment of collagen was cut out to the same size as a test piece, and the protein amount (II) was measured in the same manner as above. The amount of supported collagen was calculated as follows.
Supported collagen amount = protein amount (I) -protein amount (II)

(3) Amount of eluted collagen The pack cosmetic was cut into 50 mm x 50 mm to obtain test pieces. The test piece was housed in a plastic bag of 60 mm x 85 mm, 3 ml of 1% citrate buffer (pH 6.5) was added, and left at room temperature for 15 minutes. Thereafter, the mixture was centrifuged at 2,000 rpm for 3 minutes to obtain an extract. From this extract, the protein amount (III) was measured by the microburette method. In order to cancel the influence of the adhesive, the substrate sheet before the attachment of collagen was cut out to the same size to prepare a test piece, and the protein amount (IV) was measured in the same manner as described above. The amount of eluted collagen was calculated as follows.
Eluted collagen amount = protein amount (III)-protein amount (IV)

(4) Elution rate of collagen The amount of eluted collagen relative to the amount of supported collagen was defined as the collagen elution rate. The collagen elution rate was calculated as follows.
Collagen elution rate (%) = (amount of eluted collagen / amount of supported collagen) × 100

(5) Triple helix content Using a 0.1 mg / ml solution of native alkali-solubilized collagen as a control, CD spectra of the control at 20 ° C. and 50 ° C., and the temperature of the extract for measuring eluted collagen in each Example The CD spectrum at 20 ° C. was measured. The undenatured alkali-solubilized collagen solution is undenatured at a temperature of 20 ° C. and forms a peak at 221 nm based on a triple helical structure, but at a temperature of 50 ° C., it denatures by 100% and disappears. Therefore, based on the measurement value at 221 nm, the difference between the CD value of the control at 20 ° C. and 50 ° C. was set to 100, and the triple helix content was calculated as follows. FIG. 12 shows the CD spectrum, and Table 2 shows the CD value at 221 nm, and Table 3 shows the triple helix content.
Triple helix content (%) = {(measured CD value−CD value of control 50 ° C.) / (CD value of control 20 ° C.−CD value of control 50 ° C.)} × 100

(6) Native rate of collagen (%)
The collagen native rate (%) means the percentage of native collagen that maintains a triple helical structure in collagen eluted from the pack cosmetic, and was calculated as follows. The collagen content of Comparative Example 1 was calculated from the mixing ratio of 1 part by mass of collagen powder with respect to 4 parts by mass of the adhesive having a gelatin concentration (33.3%) contained in the adhesive layer, and /(4×0.33+1)｝×100 was calculated as 42.9 (%). Table 3 shows the results.
Collagen native rate (%) = {triple helix content / collagen content (%)} × 100
The collagen content is the ratio of the amount of eluted collagen to the total amount of collagen in the extract used in the measurement of the CD value in the above (5), and is calculated as follows.
Collagen content (%) = {eluted collagen amount / protein amount (III)} × 100

(Example 2)
Example 1 except that an adhesive layer was formed using a screen in which dots having a diameter (b) of 0.2 mm were uniformly formed at each vertex so that one side (a) formed an equilateral triangle having a length of 1.0 mm. A pack cosmetic was prepared in the same manner, and each evaluation was performed in the same manner as in Example 1. The results are shown in Tables 1 and 2. FIG. 6 (A) shows an electron micrograph of the base sheet on which the adhesive layer is formed, and FIG. 6 (B) shows an electron micrograph of the pack cosmetic in which collagen powder is fixed.

(Example 3)
The collagen powder used in Example 1 was redissolved and the dispersion obtained by isoelectric focusing was spray-dried to obtain a collagen powder. The average particle size of this collagen powder was 4.6 μm. A pack cosmetic was prepared in the same manner as in Example 1 except that this collagen powder was used, and each evaluation was performed in the same manner as in Example 1. The results are shown in Tables 1 and 2. An electron micrograph of the pack cosmetic is shown in FIG.

(Example 4)
A pack cosmetic was operated in the same manner as in Example 1 except that an aqueous solution (viscosity at a temperature of 40 ° C. of 1,400 mPa · s) of PVA (trade name “PVA-117” manufactured by Kuraray Co., Ltd.) was used instead of gelatin. A sample was prepared, and each evaluation was performed in the same manner as in Example 1. The results are shown in Tables 1 and 2. FIG. 8 (A) shows an electron micrograph of the substrate sheet on which the adhesive layer is formed, and FIG. 8 (B) shows an electron micrograph of the pack cosmetic in which collagen powder is fixed.

(Comparative Example 1)
The collagen powder used in Example 1 was kneaded at a ratio of 1 part by mass with respect to 4 parts by mass of the adhesive used in Example 1, and the same screen as in Example 1 was used for the nonwoven fabric used in Example 1. Screen printing was performed to prepare a pack cosmetic. Each evaluation was performed about the obtained pack cosmetic similarly to Example 1. The results are shown in Tables 1 and 2. The collagen powder was fixed deep inside the adhesive layer. FIG. 9 shows an electron micrograph of the pack cosmetic. The amount of supported collagen shown in Table 1 was calculated from the actually measured collagen content of 42.9% in the total protein.

(Comparative Example 2)
The collagen powder used in Example 1 was dissolved in 1% citrate buffer (pH 6.5) to a concentration of 9.8 mg / ml to prepare a solubilized collagen solution. The base sheet used in Example 1 was impregnated with 1.5 g of this solution (collagen amount: 14.7 mg / 25 cm ² ), and then air-dried to prepare a pack cosmetic.

  Since this pack cosmetic contains a citrate buffer, the same amount of ultrapure water (Milli-Q water) was used instead of 1% citrate buffer (pH 6.5) when measuring the amount of eluted collagen. The amount of eluted collagen was measured in the same manner as above. Table 1 shows the results. FIG. 10 shows an electron micrograph of the pack cosmetic. FIG. 10A is an enlarged view of 50 times, and FIG. 10B is an enlarged view of 100 times.

(Comparative Example 3)
In Comparative Example 2, a pack cosmetic was prepared in the same manner as in Comparative Example 2 except that the substrate sheet impregnated with the collagen solution was freeze-dried instead of air-dried, and eluted collagen was prepared in the same manner as in Comparative Example 2. The amount was measured. Table 1 shows the results. FIG. 11 shows an electron micrograph of the pack cosmetic. FIG. 11A is a 50-fold enlarged view, and FIG. 11B is a 100-fold enlarged view.

(result)
(1) In the pack cosmetics manufactured in Examples 1 to 4, the amount of supported collagen was uniform for each lot, the standard deviation of the amount of supported collagen was small as shown in Table 1, and the amount of immobilization was stable. . As shown in FIGS. 5 to 8, the adhesion of the collagen powder to the surface of the adhesive is fixed to the surface of the adhesive layer formed on the base sheet, and the collagen powder is applied to the base sheet other than the adhesive layer. Is not remaining. This is presumed to be one of the reasons that the amount of immobilization is stable.
(2) The pack cosmetic having an adhesive layer area of 0.28 mm ² / piece (Example 1) and the pack cosmetic having an adhesive layer area of 0.03 mm ² / piece (Example 2) As shown in FIG. 5 (B) and FIG. 6 (B), the collagen powder was uniformly attached regardless of the area of the adhesive. Since collagen powder having an average particle diameter of 158 μm and a content of less than 10 μm and a content of 5 mass% was used, it is estimated that a uniform collagen powder layer was formed. As shown in FIG. 7, even when collagen powder having an average particle diameter of 4.6 μm was used, the collagen powder layer was uniformly formed on the adhesive layer.
(3) As shown in Table 1, the pack cosmetic of the present invention in which collagen powder is adhered to the surface of the adhesive layer has an extremely high elution rate of 63.6 to 73.8 (%), Excellent utilization rate. On the other hand, in Comparative Example 1, an adhesive obtained by mixing collagen powder with an adhesive was printed in a dot shape on a base material sheet. The amount of eluted collagen was smaller than the amount of supported collagen, and the collagen elution rate was extremely low at 15.2%. Similarly, Comparative Example 2 and Comparative Example 3, in which the collagen solution was impregnated in the base sheet, also had low values of the amount of eluted collagen with respect to the amount of supported collagen. It is presumed that the pack cosmetic of the present invention had excellent contact with the dissolving solution and was rapidly dissolved because the collagen powder adhered to the surface of the adhesive layer. The collagen eluted by the lysis solution is localized on the surface of the base sheet due to its high viscosity. When used as a pack cosmetic, collagen can be used very efficiently.
(4) As shown in Table 3, the pack cosmetic of the present invention exhibits a triple helix content of twice or more as compared with the triple helix collagen content of 16.2 (%) of Comparative Example 1. As a result, the native rate of collagen exceeds about 60%. In contrast, in the pack cosmetic of Comparative Example 1, the collagen native rate is less than 40%. It is presumed that collagen lacking in stability was denatured in an aqueous solution because it was mixed with a water-containing adhesive. In the pack cosmetic of the present invention, since collagen powder is adhered to the surface of the adhesive layer, the contact area between the adhesive layer and the collagen powder is small, and it is estimated that the triple helical collagen content was maintained high. You.

Claims (9)

A pack cosmetic in which collagen powder is adhered to an adhesive layer on a surface of a base sheet or a base sheet subjected to a surface treatment,
The adhesive layer is formed by dispersion,
The pack cosmetic, wherein the collagen powder is attached to a surface of the adhesive layer.   The pack cosmetic according to claim 1, wherein the collagen powder attached to the adhesive layer has an average particle size of 1 to 500 µm and contains 1 to 80% by mass of a collagen powder having a particle size of 10 µm or less. . The pack cosmetic according to claim 1 or 2 , wherein the collagen powder is a dried product of native collagen . The area of the adhesive layer is characterized in that an adhesive layer per 0.01～30Mm ^2, face pack according to claim 1, wherein the collagen powder is attached.   The pack according to any one of claims 1 to 4, wherein the adhesive layer is formed so as to be dispersed in a range of 1 to 60% per area of the base sheet or the surface-treated base sheet. Cosmetics. The base sheet is a fabric weight 15 to 180 g / ^{m 2,} and water retention rate is characterized by a 500 to 2,000%, face pack according to claim 1.   The pack cosmetic according to any one of claims 1 to 6, wherein the base sheet has an elongation of 15 to 180% when wet.   The pack cosmetic according to any one of claims 1 to 7, wherein the adhesive constituting the adhesive layer is a hydrophilic adhesive. A toiletry article in which collagen powder is attached to an adhesive layer on the surface of a substrate sheet or a surface-treated substrate sheet,
The adhesive layer is formed by distributed,
A toilet article, wherein the collagen powder is attached to a surface of the adhesive layer.