JP2006068085A - Makeup pack material package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a makeup pack material package retaining a satisfactory quality by sufficiently suppressing oxidation and hydrolysis of vitamin C, even if being stored for a long period of time. <P>SOLUTION: This makeup pack material package P is stored and tightly sealed in an air impermeable outer bag 100 along with deoxidant or the deoxidant and desiccant; and is constituted of a tray 2 formed with a pack material storage recess part 2b which stores the makeup pack material 1 formed by impregnating vitamin C in adhesive and segmented polyurethane gel substantially containing no water, a tray lid 3 attached to the tray 2, and a ventilation part 5 retaining ventilation between a package outer part and the pack material storage recess part 2b. The atmosphere of the pack material storage recess part 2b retains a substantially anoxic and anhydrous atmosphere inside the outer bag 100 by the ventilation part 5 so as to scarcely cause the oxidation and the hydrolysis of vitamin C and retain the satisfactory quality. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cosmetic patch package containing a cosmetic patch containing vitamin C, which is non-breathable together with an oxygen absorber or with an oxygen absorber and a desiccant. The present invention relates to a cosmetic patch package that is housed in a bag and sealed.

  It is known that vitamin C, which is a typical water-soluble vitamin, and vitamin E, which is a typical fat-soluble vitamin, have effects such as whitening action, suppression of pigmentation, suppression of skin aging, and prevention of rough skin. As a cosmetic patch in which such a vitamin is contained in a hydrogel substrate, a base comprising an acrylic cross-linked hydrous gel containing polyacrylic acid and / or polyacrylate, water, and a cross-linking agent as essential components A sheet-like pack agent containing vitamin and other skin beautifying ingredients in a material is known (see Patent Document 1). There is also a natural hydrogel such as gelatin or agar containing a beautifying skin component.

  The above-mentioned sheet-shaped pack agent can contain water-soluble vitamins by being mixed with the base material of the water-containing gel, but when water-soluble vitamin C (ascorbic acid) that is easily oxidized and hydrolyzed is contained. There is a problem in that it is deteriorated or colored by being attacked by an acidic compound generated by gel decomposition. In addition, the adhesive strength of a base material made of a water-containing gel greatly varies depending on the water content, and there is also a problem that the adhesive strength is greatly reduced when the water content is reduced.

  Therefore, the applicant of the present invention accommodates a cosmetic patch containing vitamin C in an adhesive segmented polyurethane gel substantially free of moisture in the accommodation recess of the tray, and disposes the cover body provided with a water storage part to the tray. Previously proposed a cosmetic patch package that was applied to the skin (Japanese Patent Application No. 2003-337330). In this cosmetic patch package, since the segmented polyurethane gel of the cosmetic patch is an anhydrous gel, vitamin C contained in this gel is hardly hydrolyzed during storage and deteriorated or deteriorated. If the water storage part of the lid is broken just before use, the water penetrates into the segmented polyurethane gel of the cosmetic patch and dissolves vitamin C. Therefore, when this cosmetic patch is taken out from the receiving recess of the tray and applied to the face The dissolved vitamin C migrates to the skin and is quickly absorbed, and can exhibit the effects of vitamin C such as whitening action, pigmentation inhibition and antioxidant action.

  However, when the above-mentioned cosmetic patch package has a long storage period, a part of vitamin C (L-ascorbic acid) is oxidized to dehydroascorbic acid by oxygen in the air permeating the segmented polyurethane gel. Since dehydroascorbic acid has a structure that is easily hydrolyzed, there is a problem in that it is easily hydrolyzed and deactivated by moisture in the permeating air.

In addition, as a cosmetic or medical patch that impregnates the base material for impregnation immediately before use with cosmetic liquid or chemical liquid, the cosmetic liquid and the impregnating sheet are separated by a partition seal portion and enclosed in a single packaging bag. Before use, the partition seal portion is destroyed and the impregnation liquid is impregnated into the impregnating sheet (see Reference 2), or the blister containing the chemical liquid and the impregnating base material are stacked to overlap the adhesive sheet. There are known those which are provided in (1) and the base material for impregnation is impregnated with a blister just before use (see cited document 3).
JP 58-180408 A JP 2004-1807 A Japanese Patent Laid-Open No. 9-124468

  The present invention has been made in view of the above, and has satisfactory quality by sufficiently suppressing oxidation and hydrolysis of vitamin C contained in the segmented polyurethane gel of the cosmetic patch even when the storage period is long. The main solution is to provide a cosmetic patch package capable of maintaining the above. An improvement in handling of this package is also a problem to be solved.

  In order to solve the above-mentioned problems, the cosmetic patch package of the present invention is housed in a non-breathable outer bag and sealed together with an oxygen absorber or with an oxygen absorber and a desiccant. And a tray formed with a concave portion for accommodating a cosmetic patch containing vitamin C in a sticky segmented polyurethane gel substantially free of water and containing a cosmetic patch. A ventilation portion is formed which includes a tray lid to be attached, and which keeps ventilation between the outside of the package and the adhesive material receiving recess. Here, “substantially free of water” means a state where water is contained in a very small amount of 1% by weight or less, preferably 0.5% by weight or less, more preferably 0.3% by weight or less. The state of.

  In the cosmetic patch package according to the present invention, the tray lid includes a water storage section, and when an external force is applied to the water storage section, the bottom surface of the water storage section is opened and the water in the water storage section is supplied to the patch adhesive recess of the tray. Preferably, the water in this water storage part contains a humectant. In addition, two adhesive material receiving recesses are formed in the tray with the bank portion interposed therebetween, and a communication groove portion is formed in the bank portion to communicate both adhesive material receiving recess portions, and the water storage of the tray lid is directly above the communication groove portion. It is also preferable that both sides of the water storage part are supported by the bank part by positioning the part. Further, the ventilation portion is formed in the overlapping portion of the peripheral portion of the tray and the peripheral portion of the tray lid, and either one of the peripheral portion of the tray to be overlapped or the peripheral portion of the tray lid is partially outside the other. It is also preferable that the protruding portion is formed on the tray lid and the engaging portion is formed on the tray lid and the engaging portion is engaged with the engaged portion to determine the direction of the tray lid.

  In the cosmetic patch package of the present invention, since the segmented polyurethane gel of the cosmetic patch is an anhydrous gel that does not substantially contain water, in addition to being able to stably hold vitamin C in a dry state, This package is substantially oxygen-free in the outer bag, because it is stored in a non-breathable outer bag together with the oxygen agent, or with the oxygen absorber and the desiccant. The adhesive material receiving recess for storing the cosmetic adhesive material of this package is stored in an oxygen-free and anhydrous atmosphere. Since it is maintained in an oxygen and anhydrous atmosphere, vitamin C (L-ascorbic acid) contained in the segmented polyurethane gel of the cosmetic patch accommodated in the patch accommodating recess is substantially oxidized or hydrolyzed. It does not occur. Therefore, even if the storage period is long, the initial quality is maintained, and vitamin C is almost never deactivated by oxidation or hydrolysis, so water is applied to the segmented polyurethane gel of the cosmetic patch immediately before use. Vitamin C is dissolved by absorption, and if this is applied to the skin of the face, etc., the dissolved vitamin C will be transferred to the skin and absorbed immediately, whitening action, suppression of pigmentation, antioxidant action, etc. The effect of vitamin C can be demonstrated. The segmented polyurethane gel for cosmetic patches does not change greatly in adhesive strength due to a change in moisture content unlike conventional hydrogels, and has a constant and appropriate adhesive strength. There is no worry about falling out of the box.

  Further, the tray lid includes a water storage part, and when an external force is applied to the water storage part, the bottom surface of the water storage part is opened and the water in the water storage part is supplied to the adhesive material receiving recess of the tray. The patch package can absorb a suitable amount of water into the segmented polyurethane gel of the cosmetic patch housed in the patch housing recess just by applying an external force by pushing the water storage part with a finger just before use. This eliminates the need to prepare an appropriate amount of water and pour it into the segmented polyurethane gel, thereby improving handling. In particular, the tray is formed with two patch material receiving recesses sandwiching the bank portion, and the bank portion is formed with a communication groove portion that communicates both patch material receiving recess portions, and the tray cover water storage is directly above the communication groove portion. The cosmetic patch package, in which the part is positioned and both sides of the water storage part are supported by the bank part, when external force is applied to the water storage part to open the bottom surface, the water in the water storage part passes through the communicating groove part and both patch materials There is an advantage that the segmented polyurethane gel of the cosmetic patch housed in the housing recess is evenly absorbed at the same time, and both sides of the water reservoir are supported by the bank, so when pushing the water reservoir with your finger Therefore, the sink of the water storage section is eliminated, and the bottom surface of the water storage section can be easily and reliably opened. Then, the cosmetic patch material package containing the moisturizer in the water of the water storage unit is used to remove the cosmetic patch that has absorbed the water containing the moisturizer by opening the bottom surface of the water reservoir as described above. When applied to the skin, the moisturizing agent also moves to the skin, so that the moisturizing effect of the moisturizing agent can moisturize the skin. When the moisturizer is included in the segmented polyurethane gel of the cosmetic patch, vitamin C may be hydrolyzed by the retained moisture. However, the moisturizer is separated from vitamin C and is stored in the water in the reservoir. When contained, there is no fear of this, and the initial quality can be maintained over a long period of time.

  Furthermore, the cosmetic patch package in which the ventilation portion is formed in the overlapping portion of the peripheral portion of the tray and the peripheral portion of the tray lid is, for example, compared to a case where a hole serving as a ventilation portion is provided in a portion other than the peripheral portion. In addition, there is an advantage that the ventilation portion is not conspicuous, and the opening area can be increased by expanding the lateral width of the ventilation portion, and the strength is not reduced by perforation. A cosmetic patch package in which either one of the peripheral edge of the tray to be overlapped or the peripheral edge of the tray lid partially protrudes outward from the other is easily pinched with a finger as a turning margin. In addition, the tray and the tray lid can be separated, improving handling. In addition, the cosmetic patch package in which the engaging portion is formed on the tray and the engaging portion is formed on the tray lid to engage the engaged portion to determine the direction of the tray lid. There is an advantage that it can be attached to the tray in such a direction that the direction of the tray lid is not mistaken.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view showing a cosmetic patch package according to an embodiment of the present invention sealed in a non-breathable outer bag together with an oxygen scavenger and a desiccant, and FIG. 3 is an enlarged sectional view taken along line A, FIG. 3 is an enlarged sectional view taken along line BB of FIG. 1, FIG. 4 is a plan view of the cosmetic patch package taken out from the outer bag, and FIG. FIG. 5 (b) is a plan view of the tray lid of the cosmetic patch package, FIG. 6 is an exploded sectional view taken along the line CC of FIG. 4, and FIG. 7 (a) is a plan view of the tray of the material package. 5 is an enlarged sectional view taken along the line D-D in FIG. 5, FIG. 7B is an enlarged sectional view taken along the line EE in FIG. 5, FIG. 7C is an enlarged sectional view taken along the line F-F in FIG. (D) is an enlarged sectional view taken along line GG in FIG. 5, FIG. 7 (e) is an enlarged sectional view taken along line HH in FIG. 5, and FIG. Expansion showing It is a cross-sectional view.

  As shown in FIGS. 1 to 3, this cosmetic patch package P (hereinafter simply referred to as package P) is housed in a non-breathable outer bag 100 together with an oxygen scavenger 101 and a desiccant 102. As shown in FIG. 3, a cosmetic patch 1 containing vitamin C in an adhesive segmented polyurethane gel substantially free of water, and the cosmetic patch 1 is composed of a main member such as a tray 2 for storing 1 and a tray lid 3 attached to the tray 2. The desiccant 102 can be omitted, and the oxygen scavenger 101 and the package P may be housed in the outer bag 100 and sealed.

  The outer bag 100 is a non-breathable thermoplastic synthetic resin film such as polyethylene, polypropylene, polyethylene terephthalate, nylon, polyvinyl chloride, or a deposited film or laminated film obtained by depositing or laminating a metal or metal foil such as aluminum on the film. Or a composite film obtained by coating or laminating the above-mentioned thermoplastic synthetic resin film with another synthetic resin such as polyvinylidene chloride or ethylene-vinyl alcohol copolymer, or an inorganic substance such as silica, etc. Welded and sealed. As the oxygen scavenger 101 accommodated in the outer bag 100, for example, an iron-based oxygen scavenger or an organic oxygen scavenger is preferably used, and among them, those having a low water content are more preferably used. Specific examples include oxygen scavengers such as trade name “AGELESS” manufactured by Mitsubishi Gas Chemical Co., Ltd. and trade name “SANSOCUT” manufactured by Nittetsu Fine Products Co., Ltd. As the desiccant 102, for example, silica gel, calcium chloride and the like are preferably used. As shown in FIG. 2, these oxygen scavenger 101 and desiccant 102 are both wrapped in air-permeable or small-holed pouches 101a, 102a and placed on the recesses of the tray lid 3 of the package P to be removed. It is accommodated in the bag 100. Therefore, the inside of the outer bag 100 is maintained in a substantially oxygen-free and anhydrous atmosphere.

  The tray 2 and the tray lid 3 of the package P are molded products made of a thermoplastic resin such as polypropylene, polyethylene, polyethylene terephthalate, and polycarbonate. The tray 2 is rounded at the four corners (R) as shown in FIG. ), And two adhesive material receiving recesses 2b and 2b for receiving the cosmetic adhesive materials 1 and 1 are formed symmetrically on both sides of the bank portion 2a. These patch material receiving recesses 2b and 2b have a planar shape suitable for housing a pair of cosmetic patch materials 1 and 1 for the eye pack, which are applied to the portion of the face from the lower side of the eye to the corner of the eye. ing. The bank portion 2a is formed one step lower than the peripheral edge portion 2c of the tray 2 as shown in FIG. 7 (a), as shown in FIGS. 5 (a) and 7 (a). In addition, a communication groove portion 2d is formed in the center of the bank portion 2a so as to communicate both the adhesive material accommodation recesses 2b and 2b.

  Further, as shown in FIGS. 5 (a) and 7 (a), 7 (b) and 7 (c), shallow concave grooves 2e and 2e are opposed to the peripheral edge 2c of the tray 2 with the bank 2a interposed therebetween. It is formed as follows. These concave groove portions 2e and 2e are formed so that the adhesive material accommodating concave portions 2b and 2b and the outside of the package when the tray lid 3 is attached to the tray 2 with the peripheral edge portion 3a of the tray lid 3 overlapped with the peripheral edge portion 2c of the tray 2. The ventilation part which maintains ventilation with is formed.

  Furthermore, on the side wall surfaces of the trays at both ends of the bank portion 2a, as shown in FIGS. 5A and 7A and 7C, semi-cylindrical engaged portions 2f and 2f projecting inward are provided. Is formed. These engaged portions 2f and 2f correctly determine the direction of the tray lid 3 when the tray lid 3 is attached to the tray 2 as will be described later.

  On the other hand, the tray lid 3 has a square planar shape (the length of one side is the same as that of the tray 2) provided with rounded corners (R) as shown in FIG. (B), as shown in FIGS. 7D and 7E, the inner part of the peripheral edge 3a, that is, the part covering the bank 2a of the tray 2 and the adhesive material receiving recesses 2b and 2b is formed in a concave shape. The water storage part 3c is provided in the center part. Then, semi-cylindrical engaging portions 3b and 3b projecting inward are formed at locations corresponding to the engaged portions 2f and 2f of the tray 2 on the side wall surface of the tray lid 3, and the tray lid When the 3 is attached to the tray 2, the engaging portions 3b and 3b are engaged with the engaged portions 2f and 2f of the tray 2 so that the direction of the tray lid 3 can be determined without any difference between vertical and horizontal directions. It has become.

  The water reservoir 3c of the tray lid 3 has an oval planar shape as shown in FIG. 5 (b), and the central portion of the tray lid 3 is convex as shown in FIGS. 7 (d) and 7 (e). It is formed by bending, and a V-shaped protrusion 3d having a sharp lower end is provided on the upper surface of the water storage portion 3c so as to protrude downward. Then, an appropriate amount of water 4 to be supplied to the patch material receiving recesses 2b, 2b of the tray 2 is injected into the water reservoir 3c, and the water 4 is supplied by the coating film 3e laminated so as to cover the back surface of the water reservoir 3c. Sealed to prevent spillage. The covering film 3e is formed of a metal foil (for example, an aluminum foil having a thickness of about 5 to 50 μm) or a metal vapor-deposited film (for example, about 5 to 50 μm thick) that can be easily torn and opened when a V-shaped protrusion 3d is projected from above. An aluminum vapor-deposited film having a thickness of about 10 to 50 μm).

  It is preferable that the water 4 of the water storage section 3c contains an appropriate amount (about 1 to 10% by mass) of a humectant. When a moisturizer is included in the segmented polyurethane gel of a cosmetic patch described later together with vitamin C, vitamin C is hydrolyzed by the moisture retained by the moisturizer. When it is separated from vitamin C and contained in the water 4 of the water storage part 3c, there is no fear of hydrolysis of vitamin C due to the moisture of the moisturizing agent, and the bottom of the water storage part 3c is opened to contain a moisturizing agent as described later. When the cosmetic patch 1 that absorbs water 4 is affixed to the facial skin or the like, the moisturizer also moves to the skin together with vitamin C, so that the moisturizing effect of the moisturizer can moisturize the skin. . Examples of humectants include polyhydric alcohols such as glycerin, sorbitol, and polyethylene glycol, biological moisturizing ingredients such as L-glutamic acid, keratin, and lecithin, aloe extract, seaweed extract, bovine spleen extract, polyglutamic acid (natto extract). Animal and plant extract components such as are used. The moisturizing agent referred to in the present invention is more preferably a segmented polyurethane gel that adheres to the surface of the gel depending on the amount of water when water reaches the gel surface in which vitamin C is scattered on the surface layer from the water reservoir. (Especially tackiness) decreases or disappears, and in order to compensate for this, moisturizing that has a sticky nature, which is a jelly-like substance that dissolves essentially strong hydrophilic viscous polymer substances in water Agents. Examples of such substances include natural polymers such as acacia gum arabic, xanthan gum, karaya gum, gelatin, water-soluble collagen, locust bean gum, gum arabic, carrageenan, agar, etc. Typical polymers include various cellulose esters such as hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and methylcellulose, hydroxypropyl guar gum, and cellulose gum. Synthetic polymers include polyvinyl alcohol, polyvinylpyrrolidone, polyglycerin, and polyalginic acid. (Soda), polyacrylic acid soda, acrylic acid / alkyl acrylate (C10-30) copolymer, acrylic acid Na crosspolymer, carbo Typical examples include (carboxyvinyl polymer), carbomer Na, (carboxyvinyl polymer Na), and polyacrylamide. Others include carmellose Na and myristamide DEA. These water-soluble jelly-forming substances are used alone or in combination. It is good to use it.

  When the above-described moisturizing agent is contained in the water 4 of the water storage section 3c, it is desirable to add a preservative to suppress the growth of various bacteria. As preservatives, parabenzoates such as methylparaben, phenoxyethanol, eucalyptus oil, dehydroacetate and the like are used. Furthermore, it is also preferable to appropriately add a fragrance, a solubilizer (stearic acid, polyoxyethylene sorbate oleate, etc.), a colorant, a stabilizer, and the like to the water 4 of the water storage section 3c.

  The moisturizer, preservative, fragrance, solubilizer, colorant, and stabilizer are substantially the same as the package P of the present embodiment except that there is no package other than the package of the present invention, for example, the ventilation portion. It is effective even if it is contained in a water storage part of a package that is not housed in a non-breathable outer bag together with an oxygen scavenger or a desiccant. The package can prevent vitamin C hydrolysis and provide the skin with both vitamin C and moisturizing effects.

  As shown in FIG. 5 (b), the tray lid 3 of this package P is such that the radius of the upper left corner 3f and the lower right corner 3g of the peripheral edge 3a is larger than the radius of the upper right corner 3h and the lower left corner 3i. On the other hand, as shown in FIG. 5 (a), the tray 2 of this package P has an upper left corner 2g and a lower right corner 2h that are smaller than the upper right corner 2i and the lower left corner 2j. Yes. Therefore, as shown in FIG. 4, when the tray lid 3 is attached to the tray 2 and both peripheral portions 3 a and 2 c are overlapped, the upper left corner 2 g and the lower right corner 2 h having a small radius are the tray lid 3. The upper right corner 3h and the lower left corner 3i of the tray lid 3 are protruded outward from the upper right corner 2i and the lower left corner 2j of the tray 2 having a large radius. It will protrude. Therefore, since the tray 2 and the tray lid 3 can be easily separated by pinching with any of the above corners 2g, 2h, 3h, 3i partially protruding at the four corners with a finger, the opening operation of the package P Easier to handle and improves handling.

  When the tray lid 3 is attached to the tray 2, as shown in FIG. 3, the above-described shallow concave groove portions 2 e and 2 e formed at the tray peripheral portion cause the peripheral portion of the tray 2 and the peripheral portion of the tray lid 3 to Ventilation portions 5 and 5 for maintaining ventilation between the adhesive material accommodating recesses 2b and 2b and the outside of the package are formed in the overlapping portion. Therefore, the patch material receiving recesses 2b and 2b are kept in the atmosphere in the outer bag 100 by the ventilation portions 5 and 5, that is, the atmosphere made substantially oxygen-free and anhydrous by the action of the oxygen absorber 101 and the desiccant 102. Will be. When the ventilation portions 5 and 5 are formed in the overlapping portion of the peripheral portion in this way, when a hole to be a ventilation portion is provided in the other portion, for example, a concavely formed portion inside the peripheral portion 3 a of the tray lid 3. In comparison, the ventilation portion is less noticeable and does not cause a decrease in strength due to perforation, and the opening width can be increased by increasing the width of the ventilation portions 5 and 5 (the width of the shallow concave grooves 2e and 2e). .

  When the tray lid 3 is attached to the tray 2 as described above, as shown in FIGS. 2 and 4, the water storage portion 3c of the tray lid 3 is positioned directly above the communication groove portion 2d of the tray 2, Both sides of the portion 3c are supported by the bank portion 2a. Therefore, as shown in FIG. 8, when the water storage part 3c is pushed with a finger and the coating film 3e on the bottom of the water storage part 3c is pierced by the V-shaped protrusion 3d, the water 4 of the water storage part 3c is passed through the communication groove part 2d. Since the water storage part 3c supported by the bank 2a does not sink when pressed with a finger, the coating film 3e can be easily and reliably pierced by the protrusion 3d. Will be able to.

  As shown in FIGS. 3 and 6, synthetic resin nets 6 and 6 are laid on the bottoms of the adhesive material receiving recesses 2 b and 2 b of the tray 2, and the cosmetic adhesive materials 1 and 1 are stacked thereon. Contained. The nets 6 and 6 are configured so that the water flowing into the adhesive material receiving recesses 2b and 2b from the water storage part 3c of the tray lid 3 during use is circulated to the back surface of the cosmetic adhesive material 1 and 1, and the cosmetic adhesive material 1 from the back surface. When the aqueous solution of vitamin C is dropped and absorbed in the segmented polyurethane gel of the cosmetic patch 1 as will be described later, the polyurethane gel It is provided for the purpose of spreading an aqueous solution of vitamin C over the entire dropping surface so that it can be absorbed evenly. Therefore, a synthetic resin net that is well-suited to water or an aqueous solution of vitamin C and does not absorb vitamin C, for example, a mesh of about 30 to 100 mesh formed by crossing monofilaments of nylon resin having a thickness of about 100 to 300 μm. A net having is preferably used. Since a net made of twisted yarn may cause vitamin C to be taken in between the yarns of the twisted yarn, a net made of monofilament without such a fear is particularly preferably used.

The cosmetic patch 1 contains vitamin C in an adhesive segmented polyurethane gel, and in this embodiment, for an eye pack to be applied to the part from the lower side of the face to the corner of the eye, It is formed in a curved planar shape as shown by phantom lines in FIG. The thickness is not particularly limited, but a preferable thickness is about 0.5 to 2.0 mm. If it is thinner than 0.5 mm, there is a concern that the beauty effect will be insufficient because the content of Vitamin C is low. On the other hand, even if it is thicker than 2.0 mm, the corresponding effect cannot be obtained and the material is wasted. It becomes use. Moreover, you may embed a nonwoven fabric (not shown) in the surface layer part of this segmented polyurethane gel, and in that case, there exists an advantage which can form the durable strong adhesive patch 1. Further, a sheet laminated with a nonwoven fabric and a synthetic resin film may be adhered to the surface layer portion of the segmented polyurethane gel, and in this case, the advantage of being able to form a cosmetic patch 1 that is stiff and has no surface stickiness. There is. As the nonwoven fabric, a nonwoven fabric made of resin fibers such as polyolefin, polyacrylic, polyester and the like having a weight per unit area of about 10 to 60 g / m ² is suitably used. As the synthetic resin film, polyvinyl alcohol, ethylene-vinyl acetate copolymer weight is used. A film formed of coalescence, urethane or the like and having a thickness of 50 μm or less is preferably used.

  The segmented polyurethane gel of the cosmetic patch 1 is a substantially gel-free adhesive gel in which most or all of the segments are liquid at room temperature, and specifically, hydrophilic ethylene oxide (EO) ) And a segment of hydrophobic propylene oxide (PO), or a segment made of a copolymer of hydrophilic ethylene oxide (EO) and hydrophobic propylene oxide (PO). .

  Vitamin C is absorbed into the segmented polyurethane gel of the cosmetic patch 1 and then dried under reduced pressure, so that the hydrophilic EO segment part of the segmented polyurethane gel substantially free of water Alternatively, the adhesive material containing recess 2b for containing the cosmetic adhesive material 1 is the same as the atmosphere in the outer bag 100 by the ventilation portion 5 and is retained in affinity with the EO portion of the copolymer segment. Since it is maintained in a substantially oxygen-free and anhydrous atmosphere, vitamin C contained in the segmented polyurethane gel of this cosmetic patch 1 is stable for a long period of time without any substantial oxidation or hydrolysis. The polyurethane gel is not deteriorated and colored yellow by an acidic substance. Vitamin C may be dissolved in a mixed solvent of water and an alcohol such as ethanol and absorbed by polyurethane gel. In this way, the surface tension is lowered and it is difficult to be crushed. There are advantages. In some cases, other vitamins may be contained and retained in the segmented polyurethane gel together with vitamin C.

  The molar ratio of the segmented polyurethane gel to the EO segment and the PO segment is preferably 50 to 90:50 to 10. When the molar ratio of the EO segment is lower than the above range, the hydrophobicity of the polyurethane gel becomes strong, Vitamin C dissolved in water at the time of use is transferred to the skin side, and the efficiency of release becomes low. Moreover, when the molar ratio of the EO segment is higher than the above range, the overall adhesive strength of the polyurethane gel is lowered, or the affinity with water is too high, and the total release rate of vitamin C is lowered. Similarly, the molar ratio of EO and PO in the copolymer segment is desirably 50 to 90:50 to 10.

  The segmented polyurethane gel of the cosmetic patch 1 will be described in more detail. This gel is composed of a polyol component represented by the following structural formulas A to D and a polyisocyanate component represented by the following structural formulas E to I alone or in combination. It is a segmented polyurethane of a so-called three-dimensional penetration type obtained by urethane bonding of —OH group and —NCO group of both components.

式中、Ｒ_１，Ｒ_２はアルキル化合物、脂環式化合物、芳香族化合物のいずれかであり、ＡＯはアルキレンオキサイドのセグメントである。

In the formula, R ₁ and R ₂ are any of an alkyl compound, an alicyclic compound, and an aromatic compound, and AO is an alkylene oxide segment.

式中、ＡＯはアルキレンオキサイドのセグメントであり、ｌは１または４の整数である。

In the formula, AO is an alkylene oxide segment, and l is an integer of 1 or 4.

ＡＯはアルキレンオキサイドのセグメントである。

AO is an alkylene oxide segment.

ＡＯはアルキレンオキサイドのセグメントであり、Ｒは水素原子もしくはアルキル化合物、脂環式化合物、芳香族化合物のいずれかである。

AO is an alkylene oxide segment, and R is a hydrogen atom or an alkyl compound, an alicyclic compound, or an aromatic compound.

Ｒはアルキル基、脂環式化合物、芳香族化合物のいずれかであり、ＡＯはアルキレンオキサイドのセグメントである。

R is any one of an alkyl group, an alicyclic compound, and an aromatic compound, and AO is an alkylene oxide segment.

Ｒはアルキル基、脂環式化合物、芳香族化合物のいずれかであり、ＡＯはアルキレンオキサイドのセグメントである。

R is any one of an alkyl group, an alicyclic compound, and an aromatic compound, and AO is an alkylene oxide segment.

Ｒはアルキル基、脂環式化合物、芳香族化合物のいずれかであり、ＡＯはアルキレンオキサイドのセグメントであり、ｌは１または４の整数である。

R is an alkyl group, an alicyclic compound, or an aromatic compound, AO is an alkylene oxide segment, and l is an integer of 1 or 4.

Ｒはアルキル基、脂環式化合物、芳香族化合物のいずれかであり、ＡＯはアルキレンオキサイドのセグメントである。

R is any one of an alkyl group, an alicyclic compound, and an aromatic compound, and AO is an alkylene oxide segment.

Ｒはアルキル基、脂環式化合物、芳香族化合物のいずれかであり、ＡＯはアルキレンオキサイドのセグメントである。

R is any one of an alkyl group, an alicyclic compound, and an aromatic compound, and AO is an alkylene oxide segment.

  Structural formula A is a polyurethane polyol prepolymer which is a reaction product of a polyether polyol and a diisocyanate, and both terminal components are made of a polyether polyol, and the terminal is an —OH group. The diisocyanate compound used here is the same as that in the polyurethane polyisocyanate prepolymer described later. For example, phenylene diisocyanate, 2,4-toluylene diisocyanate (TDI), 4,4′-diphenylmethane diisocyanate ( MDI), naphthalene-1,5-diisocyanate, hexamethylene diisocyanate (HMDI), tetramethylene diisocyanate (TMDI), lysine diisocyanate, xylylene diisocyanate (XDI), water-added TDI, hydrogenated MDI, dicyclohexyldimethylmethane-p, p '-Diisocyanate, diethyl fumarate diisocyanate, isophorone diisocyanate (IPDI) and the like can be arbitrarily used.

  Structural formula B is obtained by adding a polyether polyol to glycerol (l = 1) or sorbitol (l = 4), and structural formula C is obtained by adding a polyether to trimethylolpropane. Similarly, 1,2,6-hexanetriol of the following structural formula J, trimethylolethane of the structural formula K, pentaerythlit slit of the structural formula L, polyglycerin of the structural formula M (n = 2 to 30) and its Adducts of polyhydric alcohols such as partial esters and polyether polyols can also be used.

  Structural formula D is a polyether polyol having an alkylene oxide segment, and both ends may be —OH groups, and one end may be blocked with alkyl groups, aromatic groups, etc. Available.

  Next, the polyisocyanate prepolymer shown in structural formulas E to I will be described. Structural formula E is obtained by dimerizing two molecules of triisocyanate obtained by reacting diisocyanate with trimethylolpropane with one molecule of AO. Tetraisocyanate that is tetrafunctional. A structural formula F uses glycerol instead of trimethylolpropane. Since this type of tetraisocyanate tends to dimerize triisocyanate with two or three molecules of AO, it is necessary to finely control the reaction. Therefore, unreacted triisocyanate is mixed, but when it reacts with a polyol, the size of the segment polyurethane molecule varies, which may act on the side convenient for controlling the adhesiveness.

  Structural formula G is obtained by reacting diisocyanate with the polyol of structural formula B. Similarly, structural formula H is a trifunctional compound obtained by reacting a polyol of structural formula C with diisocyanate. Structural formula I is a reaction product of polyether polyol and diisocyanate and is bifunctional.

The alkylene oxide segment represented by AO in the above structural formulas A to I is specifically a hydrophilic ethylene oxide (EO) segment, a hydrophobic propylene oxide (PO) segment, or ethylene oxide. Or a segment of a copolymer of (EO) and propylene oxide (PO). Examples of the segment of the copolymer include a block copolymer represented by the following structural formula N, and-(PO-EO-EO-PO) _m -,-(PO-PO-EO) _m -,-( EO-EO-PO) _m -,-(EO-PO-EO-PO) _m- and the like (m is a positive number of 1 or more), random copolymers of EO and PO, etc. Either may be sufficient.

  AO segment, which is one of these EO segment, PO segment, and EO-PO copolymer segment, is to obtain a polyurethane gel having excellent adhesive properties at room temperature and good affinity with vitamin C. Most or all of them must be liquid at room temperature, and the molecular weight is restricted for this purpose. The MW of the EO segment is suitably 150 to 1000, preferably 300 to 800. The PO segment is a liquid even if its molecular weight is tens of thousands, and the range of molecular weight that can be used is wide. However, the smaller the end group ratio, the lower the reaction probability, and in the case of an excessively long segment, the polyurethane gel is rich in fluidity and poor in shape retention, so the range of about 200 to several thousand is preferred.

  On the other hand, the fluidity (softness), adhesiveness, and affinity with vitamin C of the EO-PO copolymer segment depend on the ratio and arrangement of EO and PO. That is, in the block copolymer, when the molar fraction of PO is high, it is liquid even if the molecular weight is high, but even when the molar fraction of PO is low, it is liquid if the molecular weight of EO is low. However, as described above, if the molecular weight of the PO segment is high, problems such as shape retention occur. Therefore, a liquid EO-PO copolymer having a molecular weight of 60 to 8000, preferably 800 to 6000 is used at room temperature. The

  Next, the functional number and reaction ratio of the polyol component and the polyisocyanate component will be described. Polyurethane gels exhibiting good adhesiveness and sufficient affinity for vitamin C have a relatively bulky molecular structure with a three-dimensional network chain structure, and are freely movable segment lengths and linear ( It is important to have a large number of linear free terminal molecules. If each of the polyol and the polyisocyanate is a single compound, one is bifunctional and the other is a trifunctional or higher combination, or a trifunctional or higher functional combination. However, when reacting those having a functional number of 3 or more, the network chain concentration is too high, so if there are no very long segments, the elasticity exceeds the viscosity and it is difficult to obtain favorable adhesiveness. It is difficult to control affinity and retention (release). Therefore, the preferable functional number of both components is a combination of about 2 to 4, and in this case, the adhesiveness and affinity with vitamin C can be finely adjusted.

  The reaction ratio of each prepolymer of polyol and polyisocyanate can be regulated by the ratio of terminal functional groups, that is, the value of OH / NCO. When unreacted -NCO remains, a post-reaction occurs, so OH / NCO must be 1 or more, but a polyurethane gel having good adhesiveness is obtained when 1 ≦ OH / NCO ≦ 5. In a state where OH / NCO is 1 or more and 5 or less, it can be imagined that a straight-line segment having an OH group at the end in a group of bulky molecules moves freely with a tail, and is close to 5. There are so many free tails. And this thing is gathered in the size suitable for expressing adhesiveness.

  The range of the molecular weight of the polyol and polyisocyanate constituting the polyurethane gel varies in a wide range depending on the kind of AO or isocyanate, the molecular shape, and whether the AO is a homopolymer or a copolymer. 10000, about 150 to 6000 for polyol, and about 500 to 10,000 for polyurethane polyisocyanate prepolymer. Preferably, each can be selected in the range of about 1000 to 8500, about 300 to 3000, and about 1000 to 6000.

  The segmented polyurethane gel of the cosmetic patch 1 is obtained by reacting the above-mentioned polyol component and polyisocyanate component at the above-mentioned reaction ratio, and has the above-described molecular weight-regulated hydrophilic EO segment and hydrophobic group. It has a PO segment or an EO-PO copolymer segment, and as described above, the molar ratio of EO to PO is 50 to 90:50 to 10 and affinity for vitamin C And increased release efficiency.

As shown in FIG. 1 to FIG.
The non-breathable outer bag 100 is housed together with the oxygen absorber 101 and the desiccant 102, sealed and stored, and as described above, vitamin C does not substantially oxidize or hydrolyze for a long time. It is stably contained in the polyurethane gel of the cosmetic patch 1. When using (when performing facial eye pack), the outer bag 100 is cut open to take out the package P, and as shown in FIG. 8, the water reservoir 3c of the tray lid 3 is pushed from above with the fingertip to apply external force. Add. Then, the projection 3d of the water storage part 3c breaks through the coating film 3e on the bottom of the water storage part, and the water 4 of the water storage part 3c flows into the adhesive material receiving concave parts 2b and 2b through the connecting groove part 2d of the tray 2 from the split To do. The inflowing water 4 wraps around the back side of the cosmetic patch 1, 1 and spreads uniformly over the entire back surface along the nets 6, 6, and penetrates into the polyurethane gel of the cosmetic patch 1, 1 from the back side. Absorbed. For this reason, vitamin C contained in the polyurethane gel is dissolved in the absorbed water. Therefore, when the cosmetic patch 1, 1 taken out from the patch receiving recesses 2b, 2b of the tray 2 after removing the tray lid 3 is applied to the face eyes by the adhesive strength of the polyurethane gel, the vitamin dissolved in water C migrates from the polyurethane gel to the skin and is absorbed quickly, and the effects of vitamin C such as whitening, pigmentation inhibition, and antioxidant are exhibited. And when the humectant is contained in the water 4 of the water storage part 3c, the humectant also moves to the skin together with vitamin C, and the skin is moistened by the moisture effect.

  FIG. 10 (A) is a schematic diagram showing a state in which vitamin C is contained in a dried segmented polyurethane gel, and FIG. 10 (B) is a schematic diagram showing a state in which the segmented polyurethane gel is swollen by absorbing water. It is. In the figure, the AO segment is any one of an EO segment, a PO segment, and a copolymer segment of EO and PO.

  As shown in FIG. 10 (A), in a dry state containing almost no water, vitamin C is dispersed between the AO segments of the polyurethane gel, and vitamin C does not migrate, and decomposition occurs. Keep that state for a long time without. Then, when water is added thereto, as shown in FIG. 10 (B), water molecules enter between the AO segments, the gel swells, and vitamin C dissolves in the entered water. Therefore, when a cosmetic patch made of polyurethane gel in this state is applied to the face, vitamin C together with water migrates and penetrates into the facial skin.

  Next, with reference to FIG. 9, an example of a method for manufacturing the above-described cosmetic patch package P will be described.

  First, as shown in FIG. 9 (a), a mold 11 is placed on a release film 10, and a mixture 12, 12 of the aforementioned polyol component and polyisocyanate component is cast at two locations in the mold. To do. Then, the mixtures 12 and 12 are reacted by heating to obtain a segmented polyurethane. As shown in FIG. 9 (b), the net 2 is superimposed on the obtained segmented polyurethane 13, and FIG. 9 (c). As shown, aqueous solutions 14 and 14 of vitamin C are dropped from above. When the aqueous solutions 14 and 14 of vitamin C are dropped from the nets 6 and 6 in this way, the aqueous solutions 14 and 14 of vitamin C spread along the nets 6 and 6 over the entire upper surface of the polyurethane gels 13 and 13 and are evenly absorbed. Is done. When the absorption is completed, the mold is removed as shown in FIG. 9 (d), and moisture is removed by drying under reduced pressure to obtain cosmetic patches 1,1.

  Next, as shown in FIG. 9 (e), the tray 2 is placed over the cosmetic patch 1, 1 and the nets 6 and 6, and the tray 2 is inverted as shown in FIG. 1, 1 and nets 6 and 6 are accommodated in the adhesive material accommodating recesses of the tray 1, respectively. Then, as shown in FIG. 9 (g), a tray cover 3 filled with water 4 and sealed with a coating film 3e in the water storage section 3c is attached onto the tray 2 to obtain a cosmetic patch package P. .

  In the package of the embodiment described above, the bottom surfaces of the adhesive material receiving recesses 2b and 2b are flat surfaces. However, by forming fine irregularities on the bottom surfaces of the adhesive material receiving recesses 2b and 2b, the nets 6 and 6 are formed. Even if only the cosmetic patch 1, 1 is accommodated in the accommodating recesses 2b, 2b, the water 6 flowing into the accommodating recesses 2b, 2b from the water storage part 3c passes through the concave / convex gaps (valleys) on the bottom surface. It may wrap around the entire back surface of the cosmetic patch 1, 1 and be absorbed evenly from the back surface of the cosmetic patch 1, 1. In some cases, the number of patch material receiving recesses 2b may be increased or decreased.

  Next, an experiment for measuring storage stability and vitamin C release characteristics of the cosmetic patch package of the present invention will be described.

[Experiment 1]
(Preparation of cosmetic patch package)
A polyethylene terephthalate film is used as a release film, a mold is placed thereon, and a nonwoven fabric piece obtained by cutting a polyester nonwoven fabric having a weight per unit weight of 37 g / m ² into the shape substantially the same as the mold is obtained. Laid inside. A polyol, polyisocyanate and catalyst having a structure, molecular weight, and alkylene oxide segment corresponding to the structural formula numbers shown in Table 1 below are mixed in the proportions shown in Table 1 to prepare a liquid mixture. The segmented polyurethane gel having a thickness of 1.2 mm and a volume of 1.2 cm ³ in which the nonwoven fabric piece is laminated on the lower surface layer portion is casted on the nonwoven fabric piece and reacted at a heating temperature of 65 ° C. all day and night. Formed. A nylon net (monofilament diameter: 0.2 mm, mesh size: 50 mesh) is layered on the segmented polyurethane gel, and a 14% water / ethanol solution of vitamin C (vitamin C: water) is formed thereon. : Ethanol was added 1: 3: 3) by weight, and vitamin C was added to the polyurethane gel, and then the mold was removed and dried under reduced pressure to remove water and ethanol. A cosmetic patch containing 5% by weight of C was obtained.

  A tray formed of polyethylene terephthalate (a tray having a shallow concave groove portion serving as a ventilation portion at the peripheral portion and a patch containing concave portion in the center) is placed on the cosmetic adhesive material and the nylon net to invert the tray. In this way, the cosmetic patch and nylon net are stored in the storage recess of the tray, and a tray lid with 1.0 ml of water placed in the water storage section and sealed at the bottom with aluminum foil is applied to the tray. Thus, a cosmetic patch package was produced. Then, this cosmetic patch package was housed and sealed in a non-breathable outer bag made of an aluminum-deposited polyethylene terephthalate film together with an oxygen scavenger and a desiccant.

(Storage stability)
After the cosmetic patch package stored and sealed together with the oxygen scavenger and desiccant in the outer bag is stored at 40 ° C. for one month, the outer bag is opened, the cosmetic patch package is taken out, and the tray lid is removed. The cosmetic patch was removed from the package. The change in hue was observed by visually observing the polyurethane gel of the cosmetic patch, and the change in adhesiveness was examined by touching the polyurethane gel with a fingertip. And the change of the vitamin C content was measured based on the high performance liquid chromatograph method.

  As a result, the hue did not change from the start of the test, and the tackiness did not change. In addition, the residual content of vitamin C was 98.5% at the start of the test, including dehydroascorbic acid, which shows bioactivity similar to L-arscorbic acid. Further, when the hue change of the polyurethane gel after being stored at 40 ° C. for 2 months and 6 months was observed, the hue did not change from the start of the test.

[Vitamin C release characteristics]
Further, the water storage part of the tray lid of the package was pushed through with a finger and left until the water flowing into the adhesive patch receiving recess of the tray permeated and absorbed into the polyurethane gel of the cosmetic patch. This cosmetic patch is applied to the face of 10 people for 1 hour, the vitamin C content remaining in the polyurethane gel of the collected cosmetic patch is measured, and the difference from the vitamin C content of the unused cosmetic patch is determined. The release rate of vitamin C was determined, and the vitamin C release characteristics of the cosmetic patch were examined. The determination of the vitamin C content in the polyurethane gel was carried out by finely cutting the polyurethane gel of the patch material and extracting the vitamin C by swelling the polyurethane gel with a solution having a composition in which vitamin C is difficult to break. As a result, the average release rate of vitamin C after being applied to the faces of 10 people for 1 hour was 21.6%.

[Experiment 2]
The cosmetic patch package produced in Experiment 1 was stored in a non-breathable outer bag made of an aluminum-deposited polyethylene terephthalate film together with an oxygen scavenger, with the desiccant omitted, and sealed in the same manner as in Experiment 1. After storing at 40 ° C. for 1 month, the change in the hue of the polyurethane gel of the cosmetic patch, the change in adhesiveness, and the change in vitamin C content were measured in the same manner as in Experiment 1. As a result, neither hue nor adhesiveness was changed from the start of the test, and the residual content of vitamin C was 97. 0 at the start of the test including dehydroascorbic acid, which showed bioactivity similar to L-arscorbic acid. 7%. Furthermore, when the change in hue of the polyurethane gel after being stored at the same temperature of 40 ° C. for 2 months and 6 months was observed, the polyurethane gel after 2 months was very slightly colored, and the polyurethane gel after 6 months was It was slightly colored.

[Comparative Experiment 1]
The cosmetic patch obtained in Experiment 1 was accommodated in the patch adhesive recess of the tray used in Experiment 1 together with the nylon net, and the adhesive foil recess was sealed by laminating aluminum foil on the tray. Then, after this tray was stored at 40 ° C. for one month as in Experiment 1, the cosmetic patch was taken out of the tray and examined for changes in the hue and adhesiveness of the polyurethane gel in the same manner as in Experiment 1. In addition, the change in vitamin C content was measured. As a result, there was no change in hue and tackiness at the start of the test, but the residual content of vitamin C was tested including dehydroascorbic acid, which shows bioactivity similar to L-arscorbic acid. It was 96.5% at the start, which was slightly lower than that in Experiment 1. Furthermore, when the change in hue of the polyurethane gel after storage at 40 ° C. for 2 months and 6 months was observed, the polyurethane gel after 2 months was slightly colored and the polyurethane gel after 6 months was colored pale yellow. It was.

[Comparative Experiment 2]
The cosmetic patch obtained in Experiment 1 is housed in the adhesive patch receiving recess of the tray used in Experiment 1 together with the nylon net, and stored for one month at 40 ° C. without sealing the recess. The patch was taken out, and the change in the hue and the adhesiveness of the polyurethane gel were examined by the same method as in Experiment 1, and the change in the vitamin C content was measured. As a result, the tackiness was the same as at the start of the test, but the hue was changed to yellow, and the residual content of vitamin C included dehydroascorbic acid, which showed bioactivity similar to L-arscorbic acid. However, it was 25% at the start of the test, which was considerably lower than in Experiments 1 and 2.

  Comparing Experiments 1 and 2 and Comparative Experiments 1 and 2 above, even when vitamin C is contained in an anhydrous polyurethane gel, if the patch-containing recess is not sealed as in Comparative Experiment 2, the polyurethane gel is moisture-free. And when vitamin C is hydrolyzed and oxidized significantly by absorbing oxygen and oxygen, when the patch-containing recess is sealed as in Comparative Experiment 1, the absorption of moisture and oxygen is reduced. It can be seen that hydrolysis and oxidation are greatly suppressed. In particular, as shown in Experiment 1, when a cosmetic patch is accommodated in a patch accommodating recess of a package having a ventilation portion and stored in a non-breathable outer bag together with an oxygen scavenger and a desiccant, Since the atmosphere of the concave part containing the adhesive material is maintained in a substantially oxygen-free and anhydrous atmosphere in the outer bag by the ventilation part of the package, hydrolysis and oxidation of vitamin C hardly occur and the residual amount of vitamin C is reduced. It becomes extremely high as 98.5%, and it is understood that the storage stability is excellent. From the results of Experiment 1, it can be seen that the release characteristics of vitamin C are also good. Also, as in Experiment 2, when the desiccant is omitted and the cosmetic patch is stored in a non-breathable outer bag together with the oxygen absorber, the moisture in the outer bag is absorbed by the desiccant. As a result, vitamin C is hydrolyzed by that amount, and after a long period of storage of 6 months, the polyurethane gel becomes slightly colored. However, the oxygen scavenger prevents the oxidation of vitamin C. It can be seen that the decrease is slight and sufficient storage stability is exhibited while maintaining a high residual amount of 97.7%.

[Experiment 3]
(Preparation of cosmetic patch package)
Using a mixed solution in which polyol, polyisocyanate and catalyst having a structure, molecular weight and alkylene oxide segment corresponding to the structural formula number shown in Table 2 below were mixed in the ratio shown in Table 2, the heating temperature was set to 60 ° C. A cosmetic patch package was prepared in the same manner as in Experiment 1 except that the change was made. And this cosmetic patch package was housed in a non-breathable outer bag together with the oxygen scavenger and desiccant as in Experiment 1 and sealed.

(Storage stability)
The storage stability of the cosmetic patch package housed and sealed in the outer bag together with the oxygen scavenger and desiccant was examined in the same manner as in Experiment 1. As a result, the hue of the polyurethane gel was not changed from the start of the test, and the tackiness was not changed. In addition, the residual content of vitamin C was 98.2% at the start of the test, including dehydroascorbic acid that exhibited the same biological activity.

[Vitamin C release characteristics]
The water storage part of the tray lid of the package was pushed with a finger, and a cosmetic patch that absorbed water was applied to the face of 10 people for 1 hour, and the release rate of vitamin C was determined in the same manner as in Experiment 1. . As a result, the release rate of vitamin C was 11% on average.

[Comparative Experiment 3]
The cosmetic patch obtained in Experiment 3 was housed in the patch adhesive recess of the tray used in Experiment 1 together with the nylon net, and the aluminum foil was laminated on the tray as in Comparative Experiment 1 to seal the patch adhesive recess. . Then, after this tray was stored at 40 ° C. for one month as in Experiment 1, the cosmetic patch was taken out of the tray and examined for changes in the hue and adhesiveness of the polyurethane gel in the same manner as in Experiment 1. In addition, the change in vitamin C content was measured. As a result, there was no change in hue and tackiness at the start of the test, but the residual content of vitamin C was tested including dehydroascorbic acid, which shows bioactivity similar to L-arscorbic acid. It was 96.0% at the start, which was slightly lower than that in Experiment 3.

[Comparison Experiment 4]
The cosmetic patch obtained in Experiment 3 was accommodated in the patch adhesive recess of the tray used in Experiment 1 together with the nylon net, and stored at 40 ° C. for one month without sealing the recess as in Comparative Experiment 2. Thereafter, the cosmetic patch was taken out from the tray, and the change in the hue and the adhesiveness of the polyurethane gel were examined in the same manner as in Experiment 1, and the change in the vitamin C content was measured. As a result, the tackiness was the same as at the start of the test, but the hue was changed to yellow, and the residual content of vitamin C included dehydroascorbic acid, which showed bioactivity similar to L-arscorbic acid. However, it was 22% at the start of the test, which was considerably lower than that in Experiment 3.

  When the experiment 3 and the comparative experiments 3 and 4 are compared with each other, as in experiment 3, the cosmetic patch is accommodated in the patch accommodating recess of the package having the ventilation portion, and the non-breathable together with the oxygen absorber and the desiccant. In the case of being sealed and sealed in the outer bag, the atmosphere of the adhesive material receiving recess in the package is maintained in a substantially oxygen-free and anhydrous atmosphere in the outer bag by the ventilation part of the package. Oxidation is sufficiently suppressed and the residual amount of vitamin C is as extremely high as 98.2%, and it has excellent storage stability. In the case where the adhesive material receiving recess is sealed as in Comparative Experiment 3, the hydrolysis and oxidation of vitamin C are insufficiently suppressed and the residual amount of vitamin C is reduced. I know it ’s not good.

[Comparison Experiment 5]
A polyacrylic acid gel was made using a commercially available polyacrylic acid gel raw material, and a 14% water / ethanol solution of vitamin C used in Experiment 1 was dropped and absorbed into this gel. In addition, the polyacrylic acid gel was colored yellow, and a material suitable for a cosmetic patch could not be obtained.

  Comparing Comparative Experiment 5 using this acrylic acid gel with Experiments 1, 2, 3 and Comparative Experiments 1, 2, 3, 4 using the above-mentioned anhydrous polyurethane gel, anhydrous polyurethane gel preserves vitamin C. It can be seen how suitable the carrier is as a stable carrier.

It is a top view which shows the adhesive patch package for cosmetics which concerns on one Embodiment of this invention accommodated in the non-breathable outer bag with the oxygen absorber and the desiccant, and was sealed. It is an AA line expanded sectional view of FIG. It is a BB line expanded sectional view of Drawing 1. It is a top view of the patch material package for the cosmetics taken out from the outer bag. (A) is a top view of the tray of the cosmetic patch package, (b) is a plan view of the tray lid of the cosmetic patch package. FIG. 5 is an enlarged exploded sectional view taken along the line CC of FIG. 4. 5A is an enlarged sectional view taken along line DD in FIG. 5, FIG. 5B is an enlarged sectional view taken along line EE in FIG. 5, FIG. 5C is an enlarged sectional view taken along line FF in FIG. FIG. 5 is an enlarged sectional view taken along line GG in FIG. 5, and FIG. 5E is an enlarged sectional view taken along line HH in FIG. It is an expanded sectional view which shows the place which pressed the water storage part of the patch material package for the said cosmetics with the finger | toe. It is explanatory drawing which shows an example of the manufacturing method of the same adhesive material package. (A) is a schematic diagram showing a state in which vitamin C is contained in a dried segmented polyurethane gel, and (B) shows a state in which the segmented polyurethane gel containing vitamin C is swollen with water. It is a schematic diagram.

Explanation of symbols

P Cosmetic patch material package 1 Cosmetic patch material 2 Tray 2a Embankment portion 2b Patch material receiving recess 2c Peripheral edge portion of tray 2d Communication groove portion 2e Shallow groove portion serving as a ventilation portion 2f Engagement portion 2g, 2h Small radius of tray Corners 2i, 2j Corners with large radius of tray 3 Tray lid 3a Peripheral edge of tray lid 3b Engagement part 3c Water storage part 3d Projection 3f, 3g Corners with large radius of tray lid 3h, 3i 5 Ventilation part 100 Non-breathable outer bag 101 Oxygen absorber 102 Desiccant

Claims (7)

  A cosmetic patch package that is sealed in a non-breathable outer bag together with an oxygen scavenger, or with an oxygen scavenger and a desiccant, and is substantially water-free adhesive A tray having a concave portion for accommodating a cosmetic patch containing vitamin C in a segmented polyurethane gel, and a tray lid to be attached to the tray. A cosmetic patch package, characterized in that a ventilation portion for maintaining ventilation with the housing recess is formed.   2. The tray lid is provided with a water storage part, and when an external force is applied to the water storage part, the bottom surface of the water storage part is opened so that the water in the water storage part is supplied to the cosmetic material receiving recess of the tray. The cosmetic patch package according to 1.   The cosmetic patch package according to claim 2, wherein the water in the water reservoir contains a humectant.   Two decorative material accommodating recesses are formed on the tray with the bank portion interposed therebetween, and a communication groove portion is formed on the bank portion so as to communicate both the decorative material receiving recess portions, and a water storage portion of the tray lid is directly above the communication groove portion. The cosmetic patch package according to claim 2 or 3, wherein is positioned and both side portions of the water storage portion are supported by a bank portion.   The cosmetic patch package according to any one of claims 1 to 4, wherein the ventilation portion is formed in an overlapping portion of the peripheral portion of the tray and the peripheral portion of the tray lid.   6. A cosmetic patch according to claim 1, wherein one of the peripheral edge of the tray and the peripheral edge of the tray lid partially protrudes outward from the other. Material package.   7. An engaged portion is formed on the tray, and an engaging portion that engages with the engaged portion and determines the direction of the tray lid is formed on the tray lid. A cosmetic patch package according to any one of the above.

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