JP6193846B2 - pack - Google Patents

Description

  The present invention relates to a pack used by being attached to a face.

  As a pack used for skin care, a pack in which a nonwoven fabric and a gel sheet are laminated and the cosmetic composition is held on the gel sheet is known. Such a pack is used by sticking to the skin of the face.

  Conventionally, as such a pack, a non-elastomeric fiber layer and an elastomer layer are laminated and integrated so as to improve the lift-up effect by having elasticity in the vertical direction of the face. A cosmetic mask made is known (for example, see Patent Document 1).

  In addition, as another pack, it consists of a base fabric having stretchability and a pressure-sensitive adhesive composition containing polyacrylic acid and / or sodium polyacrylate as a polymer component, and is used by sticking to the face. In cosmetics, the longitudinal and lateral elongation rates when applied to the face are 7.3-12% in the longitudinal direction and the transverse direction when measured at 1 Newton load on a strip-shaped sample having a width of 50 mm. With a content of 17 to 20%, a sheet-like cosmetic is known that improves fit, adhesion and ease of handling, and eliminates a sense of incongruity such as a feeling of sticking during use (see, for example, Patent Document 2). .

Japanese Patent No. 5,201,282 Japanese Patent No. 3382863

  However, in the case of the cosmetic mask described above among the conventional packs described above, since the skin is physically strengthened by bringing the elastomer layer into close contact with the skin, an excellent wearing feeling is obtained. I can't. That is, it is not possible to wear the cosmetic mask in a state where the natural natural tension of the skin is pulled out to the maximum.

  On the other hand, among the conventional packs described above, in the case of the sheet-like cosmetics described later, since the stretch rate in the horizontal direction is higher than the stretch rate in the vertical direction, the original tension of the skin is maximized. Cannot be installed in the state. Furthermore, in the case of the sheet-shaped cosmetics described later, since the bleeding property is insufficient, the cosmetic ingredients cannot be sufficiently supplied to the skin, and a sufficient moist feeling cannot be obtained.

  The present invention has been made in view of such a situation, and can be worn on the face with the skin's natural tension pulled out to the maximum, and can supply sufficient moisture to the skin. The purpose is to provide a pack that can.

  The pack of the present invention for solving the above problems comprises a base material made of a nonwoven fabric or a woven fabric, and a gel, wherein the cosmetic composition is held at least on the gel, and the gel is applied to the face. It is a sheet-like pack to be used, and the pack has a stretch rate of 15 to 50% measured by the following method in the longitudinal direction when pasted on the face, and the following in the lateral direction when pasted on the face. The stretch rate measured by the above method is 3 to 14%, the 50% stretch recovery rate measured by the following method in the longitudinal direction when pasted on the face is 50% or more, and the bleed rate measured by the following method Is 9 to 16%.

  Method for measuring elongation rate: A pack of width 50 mm × length 60 mm is chucked at an interval of 40 mm, stretched at an elongation rate of 80 mm / min, length L at a load of 1 N is measured, and elongation rate (%) = [(L-40) / 40] × 100 is calculated.

  Method for measuring 50% elongation recovery rate: A pack having a width of 25 mm and a length of 60 mm is chucked at an interval of 40 mm, stretched at an elongation speed of 300 mm / min until the distance between chucks reaches 60 mm, and then the same speed Measure the elongation L ′ when the residual stress becomes 0 (distance between chucks when the residual stress becomes 0−distance between chucks before measurement (40 mm)) from the obtained load-elongation curve, 50% Elongation recovery rate (%) = [[(60-40) -L ′] / (60-40)] × 100 is calculated.

  Measurement method of bleed rate: A pack cut into a 50 mm × 50 mm square is attached to one side of a filter paper having a weight A folded in half and sandwiched between the filter papers to make a sample, and the weight S of the sample is measured. It is further sandwiched between two glass plates of 100 mm × 200 mm × 3 mm and left for 10 minutes. Thereafter, the pack is removed from the sample, the weight C of the filter paper is measured, and the bleeding rate R = [(CA) / (SA)] from the liquid amount (CA) of the cosmetic composition bleed on the filter paper. Calculate x100.

  The above-mentioned pack may have a force at the time of 25% elongation recovery of 0.15 to 1.0 N / 25 mm measured by the following method in the longitudinal direction when pasted on the face.

  25% extension recovery force: After the pack was extended under the same conditions as when measuring the 50% extension recovery rate, it was returned at the same speed until the chuck-to-chuck distance (interval) reached 50 mm, and the force at that time was 25% Measured as the force at extension recovery.

  The pack may have a vertical adhesive force measured by the following method of 0.020 to 0.028 N / 12 mmφ.

  Measuring method of vertical adhesive force: SUS304 cylinder having a diameter of 12 mm was pressed against a gel surface of a pack cut into 30 mm × 30 mm square at a speed of 1 mm / min to a load of 0.294 N, and contacted for 10 seconds. , Peeling at a speed of 300 mm / min, and measuring the force required for peeling at that time as the vertical adhesive force.

The pack may have a nonwoven fabric basis weight of 75 to 100 g / m ² and a gel thickness of 0.3 to 1.5 mm.

  The pack may be formed in a size corresponding to the entire face, a size corresponding to the upper half of the face, or a size corresponding to the lower half of the face.

  According to the pack of the present invention, it is possible to attach to the face in a state where the original tension of the skin is pulled out to the maximum by appropriate face followability and elasticity and sufficient surface tension by the bleed of the cosmetic composition. And sufficient hydration can be supplied to skin by the bleeding of sufficient cosmetic composition.

It is a top view which shows an example of the pack which concerns on this invention. It is the II sectional view taken on the line of the pack shown in FIG. It is a top view which shows other embodiment of the pack which concerns on this invention. It is a top view which shows other embodiment of the pack which concerns on this invention.

  The pack of the present invention comprises a base material made of a nonwoven fabric or a woven fabric and a gel, and is composed of a cosmetic composition held at least on the gel, and is used by sticking the gel to the face. In the pack, the stretch rate measured by the following method in the vertical direction when pasted on the face is 15 to 50%, and the stretch measured by the following method in the lateral direction when pasted on the face. The rate is 3 to 14%, the 50% elongation recovery rate measured by the following method in the longitudinal direction when pasted on the face is 50% or more, and the bleed rate measured by the following method is 9 to 16%. It is characterized by that.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a pack 1 corresponding to the size of the entire face as an example of the pack according to the present invention, and FIG. 2 is a cross-sectional view taken along line II of the pack 1 shown in FIG.

  This pack 1 has a base material 2 made of a nonwoven fabric or a woven fabric, a gel layer 31 composed of a gel 3, and an intermediate layer 32 composed of a part of the gel 3 penetrating into the base material 2. The cosmetic composition is held in the gel 3 and is a sheet-like pack 1 that is used by sticking the surface of the gel layer 31 to the face, and the pack 1 is a vertical one when attached to the face. Stretch rate in the direction is 15-50%, stretch rate in the horizontal direction when pasted on the face is 3-14%, stretch rate in the vertical direction when pasted on the face is 50% or more, bleeding rate Is 9 to 16%.

  The base material 2 corresponds to the through-hole 22 provided in the portion corresponding to the eyes, the through-hole 23 provided in the portion corresponding to the mouth, the slit 24 provided in the portion corresponding to the nose, and the jaw. It is formed in a substantially circular sheet shape having slits 25 provided in the part, and the positions of the through holes 22 and 23 and the slits 24 and 25 are adjusted so that they can be attached to the entire surface along the curved surface of the face. Yes.

  This base material 2 is comprised by the woven fabric or the nonwoven fabric. The woven fabric or non-woven fabric is not particularly limited as long as predetermined physical properties can be obtained as the pack 1. For example, chemical fibers (for example, polyethylene terephthalate (hereinafter abbreviated as “PET”) fibers, etc. A woven fabric or a non-woven fabric made of a raw material of polyester fiber, polypropylene (hereinafter abbreviated as “PP”) fiber, and nylon fiber) can be used. Further, as long as predetermined physical properties can be obtained for the pack 1, semi-synthetic fibers obtained by modifying natural fibers (for example, cellulose fibers such as cotton and rayon) may be used as the chemical fibers. Further, a woven fabric or a non-woven fabric made of a raw material obtained by blending natural fibers or semi-synthetic fibers into synthetic fibers and blending them may be used as the substrate 2. Moreover, as a specific example of a nonwoven fabric, the nonwoven fabric by the needle punch manufacturing method which consists of PET fibers, the nonwoven fabric by the spunlace manufacturing method, the nonwoven fabric which consists of a fiber which has a stretching property (for example, crimped nonwoven fabric which consists of crimped yarn), etc. are used. It is preferable.

Also, the basis weight of the woven or nonwoven fabric, but it if not particularly limited a basis weight which can obtain a predetermined physical properties as a pack 1 is preferably ^{75~100g / m 2, 80~100g / m} 2 It is more preferable that When the basis weight of the woven or non-woven fabric is less than 75 g / m ² , it is not possible to obtain appropriate followability to the face and elasticity provided by the pack 1, while the basis weight of the woven or non-woven fabric is If it exceeds 100 g / m ² , the base material 2 is too hard, and the fit to the skin (skin) may be impaired. Moreover, it is although it does not specifically limit as the fineness of the fiber which comprises a woven fabric or a nonwoven fabric, It is preferable that it is 0.5-3.0 dtex. The thickness of the woven fabric or nonwoven fabric is preferably 0.40 mm to 0.85 mm.

  The gel 3 is formed by applying a gel composition constituting the gel 3 on one side of the substrate 2 and curing it, and forming a gel layer 31 made of only the gel 3 on one side of the substrate 2. . At this time, the layer in which the gel 3 penetrates into the base material 2 and the base material 2 and the gel 3 are integrated becomes the intermediate layer 32. As the gel 3 constituting the gel layer 31 and the intermediate layer 32, water composed of a synthetic / natural polymer having a network structure and / or a viscous agent and components conventionally used in skin external preparations such as cosmetics and pharmaceuticals. It is comprised by mix | blending the cosmetics composition containing this.

  Examples of the thickener (thickener) include agar, gelatin, carrageenan, xanthan gum, celluloses (carboxymethylcellulose (CMC), methylcellulose (MC), hydroxypropylcellulose (HPC), etc.), polyacrylic acid or a salt thereof. And polymethacrylic acid or a salt thereof, polyvinyl alcohol, polyvinylpyrrolidone, alginic acid or a salt thereof, polyacrylamide, a copolymer thereof with a monomer or another monomer, and the like.

  In addition, the synthetic / natural polymer having a network structure other than the above-mentioned adhesive is not particularly limited as long as it has an affinity for water and has been conventionally used in skin external preparations such as cosmetics and pharmaceuticals. Polymers can be used. Among them, a polymer of a polymerizable unsaturated monomer having an anionic functional group such as a carboxyl group or a sulfonic acid group or a salt of such a polymer (for example, sodium salt, potassium salt, triethanolamine salt, etc.) is high. As the molecular skeleton, a synthetic polymer obtained by reacting with a crosslinking agent is preferable.

  Examples of a polymer of a polymerizable unsaturated monomer having a carboxyl group or a salt of these polymers include polyacrylic acid or a salt thereof, polymethacrylic acid or a salt thereof.

  Moreover, as a polymer of the polymerizable unsaturated monomer which has a sulfonic acid group, or salt of these polymers, poly t-butyl acrylamide sulfonic acid or its salt can be mentioned, for example.

  Examples of the crosslinking agent include aluminum hydroxide, potassium alum, aluminum sulfate, aluminum glycinate, aluminum acetate, aluminum oxide, aluminum metasilicate, magnesium chloride, calcium hydroxide, calcium carbonate, magnesium aluminate metasilicate, Examples include polyethyleneimine, polyethylene glycol diglycidyl ether, glycerin triglycidyl ether, and triglycidyl isocyanurate.

  The gel 3 has a crosslinking accelerator for ensuring the crosslinking at an optimum pH at which the crosslinking agent acts, for example, various organic acids such as tartaric acid, lactic acid, citric acid, glycolic acid, hydrochloric acid, You may mix | blend an inorganic acid etc. In this case, it is preferable to control the crosslinking reaction so that the pH of the gel 3 after the crosslinking accelerator is blended is 4 to 6, more preferably 4 to 5.

  Examples of the cosmetic composition blended in the gel 3 include, for example, a bleed accelerator, a crosslinking accelerator, a moisturizer, a cooling agent, a warming agent, a plant / animal extract (medicinal component), a biopolymer, an oily component, What mix | blended various components, such as an anti-inflammatory agent, vitamins, an active ingredient, an antioxidant, a blood circulation promoter, a wound healing agent, another component, can be used. At this time, the gel 3 has components other than the cosmetic composition, which are conventionally used in external preparations for skin such as cosmetics and pharmaceuticals, such as fragrances, colorants, stabilizers, antioxidants, ultraviolet agents, and tackifiers. Agents, chelating agents, preservatives, antibacterial agents, emulsifiers and the like may be blended.

  Specific examples of the bleed promoter include water-insoluble components that are not easily adapted to the gel 3 and are easily discharged from the gel 3, such as polyethylene glycol 1000, polyethylene glycol 1500, polyethylene glycol 2000, polyethylene Glycol 3000 or the like can be used. The bleed rate of the entire pack 1 can be adjusted to 9 to 16% depending on the amount of the burito accelerator added. For example, when the pack 1 is constituted by using a nonwoven fabric made of PET fiber as the base material 2, as a bleed accelerator to be added to the gel composition constituting the gel 3, 1 to 2% by weight is added to the entire gel composition. It is preferable.

  Specific examples of the humectant include, for example, glycerin, diglycerin, triglycerin, polyglycerin, 3-methyl-1,3-butanediol (isopropylene glycol), 1,3-butylene glycol, isoprene glycol, 1, 2-pentanediol, 1,2-hexanediol, propylene glycol, dipropylene glycol, polypropylene glycol, ethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, neopentyl glycol, maltitol, reduced starch syrup, sucrose, lactitol, palatinit, Erythritol, sorbitol, mannitol, xylitol, xylose, glucose, lactose, mannose, maltose, galactose, fructose, inositol, la Inosu, trehalose, trimethylglycine, polyols cyclodextrin, such as hyaluronic acid and its salts, amino acids, urea, sodium pyrrolidone carboxylic acid, betaine, whey, and the like. These can be used alone or in admixture of two or more.

  Specific examples of the cooling agent include menthol, menthone, camphor, pregol, isopulegol, cineol, mint oil, peppermint oil, spare mint oil, eucalyptus oil, 3-l-menthoxypropane-1,2-diol, N- Alkyl-p-menthane-3-carboxamide, 3-l-mentoxy-2-methylpropane-1,2-diol, p-menthane-3,8-diol, 2-l-menthoxyethan-1-ol, 3 -L-menthoxypropan-1-ol, 4-l-menthoxybutan-1-ol, menthyl 3-hydroxybutanoate, menthyl lactate, menth glycerin ketal, 2- (2-l-menthyloxyethyl) ethanol, Menthyl glyoxylate, N-methyl-2,2-isopropylmethyl- - methylbutanamide, 2-pyrrolidone-5-carboxylic acid menthyl, monomenthyl succinate, may be mentioned alkali metal salts of monomenthyl succinate, and alkali earth metal salts of monomenthyl succinate. These can be used individually or in mixture of 2 or more types.

  Specific examples of the warming agent include vanillyl ethyl ether, vanillyl propyl ether, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, capsaicin, gingerol, vanillyl butyl ether, vanillyl butyl ether acetate, 4- (l- Menthoxymethyl) -2-phenyl-1,3-dioxolane, 4- (1-Mentoxymethyl) -2- (3 ′, 4′-dihydroxyphenyl) -1,3-dioxolane, 4- (1-menthol Xymethyl) -2- (2′-hydroxy-3′-methoxyphenyl) -1,3-dioxolane, 4- (1-menthoxy-methyl) -2- (4′-methoxyphenyl) -1,3-dioxolane , 4- (1-Mentoxymethyl) -2- (3 ′, 4′-methylenedioxif Nil) -1,3-dioxolane, 4- (l-methoxymethyl) -2- (3′-methoxy-4′-hydroxyphenyl) -1,3-dioxolane, red pepper oil, red pepper oleoresin, ginger oleoresin, Nonyl acid vanillylamide, jambu oleoresin, sansho extract, sanshool-I, sanshool-II, sanshoamide, black pepper extract, kabicin, piperine, spirantol and the like can be mentioned. These can be used individually or in mixture of 2 or more types.

  Specific examples of the plant / animal extract include: Ashitaba extract, Avocado extract, Achacha extract, Altea extract, Arnica extract, Apricot extract, Apricot kernel extract, Fennel extract, Turmeric extract, Oolong tea extract, Echinashi leaf extract, Ogon extract , Buckwheat extract, barley extract, Dutch mustard extract, orange extract, dried sea water, hydrolyzed elastin, hydrolyzed wheat powder, hydrolyzed silk, chamomile extract, carrot extract, sagebrush extract, licorice extract, kiwi extract, quina extract , Cucumber extract, Guanosine, Kumazasa extract, Walnut extract, Grapefruit extract, Clematis extract, Yeast extract, Burdock extract, Comfrey extract, Collagen, Cowberry extract, Psycho Kiss, Saitai extract, Salvia extract, Salmon extract, Sasa extract, Hawthorn extract, Shiitake extract, Giant extract, Shikon extract, Linden extract, Shimotake extract, Ginger root extract, Birch extract, Horsetail extract, Honeysuckle extract, Papaver extract, Hawthorn Extract, elderberry extract, yarrow extract, mint extract, mallow extract, assembly extract, peanut extract, thyme extract, clove extract, chigaya extract, chimpi extract, spruce extract, dokudami extract, tomato extract, natto extract, carrot extract, wild rose extract, Hibiscus extract, Bacmond extract, parsley extract, honey, Parietalia extract, toad extract, bisabolol, squirrel Po extract, Fukinoto extract, Bukuryo extract, Butcher bloom extract, Grape extract, Propolis, Loofah extract, Peppermint extract, Body extract, Hop extract, Pine extract, Marronnier extract, Citrus extract, Mukuroji extract, Peach extract, Cornflower extract, Eucalyptus extract, Yuzu extract, Artemisia extract, lavender extract, apple extract, lettuce extract, lemon extract, lotus extract, rose extract, rosemary extract, roman chamomile extract, royal jelly extract, astaxanthin and the like. These can be used individually or in mixture of 2 or more types.

  Specific examples of the biopolymer include deoxyribonucleic acid, chondroitin sodium sulfate, collagen, elastin, chitin, chitosan, and hydrolyzed eggshell membrane. These can be used individually or in mixture of 2 or more types.

  Specific examples of the oil component include sphingolipids, ceramides, cholesterol, cholesterol derivatives, phospholipids, silicone polymers, mineral oil, paraffin, liquid paraffin, isoparaffin, hydrogenated polydecene, isohexadecane, and other hydrocarbons, trimers. Tyroylpropane tricaprylate / tricaprylate, alkyl benzoate having 12 to 15 carbon atoms, ethyl hexyl stearate, capryl cap print triglyceride, squalane, ethyl hexyl cocoate, decyl oleate, decyl cocoate, ethyl oleate, isopropyl myristate , Ethylhexyl perlagonate, pentaerythrityl tetracaprylate / tetracaprate, PPG Esters such as 3 benzyl ether myristate, propylene glycol dicaprylate / dicaplate, ethylhexyl isostearate, ethylhexyl palmitate, and natural such as soybean oil, sunflower oil, jojoba oil, safflower oil, red rapeseed oil and rapeseed oil Examples thereof include oils and derivatives thereof. These can be used individually or in mixture of 2 or more types.

  Specific examples of the anti-inflammatory agent include ε-aminocaproic acid, glycyrrhizic acid, dipotassium glycyrrhizinate, β-glycyrrhetinic acid, lysozyme chloride, guaiazulene, hydrocortisone and the like. These can be used individually or in mixture of 2 or more types.

Specific examples of the vitamins include vitamins A, B ² , B ⁶ , D, E; calcium pantothenate; biotin; nicotinic acid amide; ascorbic acid or ascorbic acid derivatives or salts thereof. As specific examples of ascorbic acid or ascorbic acid derivatives or salts thereof, ascorbic acid or ascorbic acid derivatives or salts thereof include L-ascorbic acid, L-ascorbic acid Na, L-ascorbic acid K, and L-ascorbic acid. Ca, L-ascorbic acid phosphate, magnesium salt of L-ascorbic acid phosphate, L-ascorbic acid sulfate, L-ascorbic acid sulfate disodium salt, L-ascorbic acid stearate, L-ascorbic acid Examples include 2-glucoside, L-ascorbyl palmitate, tetraisopalmitate L-ascorbyl and the like. These can be used individually or in mixture of 2 or more types.

  Specific examples of the active ingredient include allantoin, diisopropylamine dichloroacetate, 4-aminomethylcyclohexanecarboxylic acid and the like. These can be used individually or in mixture of 2 or more types.

  Specific examples of the antioxidant include tocopherol, carotenoid, flavonoid, tannin, lignan and saponin. These can be used individually or in mixture of 2 or more types.

  Specific examples of the blood circulation promoter include γ-oryzanol, vitamin E derivatives and the like. These can be used individually or in mixture of 2 or more types.

  Specific examples of the wound healing agent include retinol and retinol derivatives. These can be used individually or in mixture of 2 or more types.

  Specific examples of the other components include cephalanthin, capsicum tincture, hinokitiol, garlic iodide extract, pyridoxine hydrochloride, dl-α-tocopherol, dl-α-tocopherol acetate, nicotinic acid, nicotinic acid derivatives, calcium pantothenate, D -Pantothenyl alcohol, acetyl pantothenyl ethyl ether, biotin, allantoin, isopropylmethylphenol, estradiol, ethinyl esteradiol, capronium chloride, benzalkonium chloride, diphenhydramine hydrochloride, takanal, camphor, salicylic acid, nonyl acid vanillylamide, nonanoic acid vanillylamide, Piroctone olamine, glyceryl pentadecanoate, mononitroguaiacol, resorcin, γ-aminobutyric acid, benzethonium chloride, mekihydrochloride Retin, auxin, female hormones, cantharis tincture, cyclosporine, hydrocortisone, or monostearate polyoxyethylene sorbitan, analgesics, tranquilizers, antihypertensive agents can include antibiotics, antihistamines, antibacterial agents and the like. These can be used individually or in mixture of 2 or more types.

  The said gel 3 can comprise the gel layer 31 and the intermediate | middle layer 32 by making the gel composition which comprises the said gel 3 to the said base material 2, and carrying out curing hardening. That is, since the gel 3 has a fast crosslinking reaction and curing due to the crosslinking agent in the gel composition constituting the gel 3, the gel composition within a predetermined time from the time when the crosslinking reaction by the crosslinking agent is started. Are sufficiently mixed and applied to the substrate 2. At this time, the amount of the gel 3 (the gel 3 constituting the gel layer 31) penetrating the base material 2 and the surface of the base material 2 are determined depending on how much the cross-linking reaction has been applied. The amount of the gel 3 (gel 3 constituting the intermediate layer 32) to be formed is determined, and the ratio of the gel layer 31 and the intermediate layer 32 is determined by these amounts. Therefore, when the crosslinking reaction by crosslinking is started by addition of a crosslinking accelerator at the start of the reaction by crosslinking, for example, when the gel composition is applied to the substrate 2 immediately after the addition of the crosslinking accelerator, the gel layer 31 is If the intermediate layer 32 is too thin and too long, the intermediate layer 32 is not formed and the gel 3 is easily peeled off from the substrate 2. Therefore, in such a case, it is preferable to apply the gel composition to the substrate 2 within 5 minutes, more preferably within 1 minute to 3 minutes from the reaction start time. When coating, the thickness of the gel 3 including the gel layer 31 and the intermediate layer 32 is preferably 10 to 90% and more preferably 35 to 80% with respect to the thickness of the entire pack 1. When the ratio of the thickness of the gel 3 is less than 10%, the feeling of adhesion to the skin and the feeling of gel are insufficient. On the other hand, when the ratio of the thickness of the gel 3 exceeds 90%, the gel 3 There is concern that the physical properties such as the elongation rate of the material 2 may be impaired, the occurrence of the back-through of the gel 3 on the base material 2, and the gel 3 that is back-through on the base material 2 at the time of manufacturing the pack 1 contaminates the production line. This is not preferable because there are concerns. The ratio of the thickness of the intermediate layer 32 to the total thickness of the gel 3 is preferably 10 to 90%, and more preferably 20 to 80%.

  The affixing surface 30 of the gel layer 31 may be protected by the protective film 4 so that the cosmetic composition of the gel layer 31 does not migrate elsewhere. Examples of the protective film 4 include films made of polyethylene, polypropylene, polyester, and the like.

  Note that the size of the pack 1 is not limited to the size of the entire face as shown in FIG. 1, but corresponds to the upper half of the face as shown in FIG. The pack 1 may be formed in a size, or as illustrated in FIG. 4, the pack 1 may be formed in a size corresponding to the lower half of the face. In this case, the pack 1 formed in a size corresponding to the upper half of the face and the pack 1 formed in a size corresponding to the lower half may be used individually, By using in combination, it may be affixed to the entire face. Here, the size corresponding to the upper half of the face does not include the chin portion and the cheek portion, but the size includes at least the forehead portion, and the size corresponding to the lower half of the face refers to the forehead portion. Does not include, but refers to the size including at least the jaw and cheek. 3 and 4, the same members as those in FIG.

  The pack 1 configured in this manner is individually or collectively packaged. At this time, the packaging may be a film packaging of the pack 1 as it is, or a film packaging after the pack 1 is stored in the storage recess of the tray in which the storage recess is formed. However, in the case where the pack 1 is film-wrapped as it is, there is a concern that the cosmetic composition may flow out from the gel 3 into the film package if external stress is applied during storage or transportation. Also, when the change in the temperature of the warehouse or during transportation is large, the cosmetic composition evaporates from the gel 3 by the saturated vapor pressure at the time of high temperature, fills the film packaging, condenses at the low temperature, and again condenses the gel 3 It is feared that it gradually deteriorates with the passage of time. Therefore, the packaging is preferably vacuum packaging in which the pack 1 is sealed and the inside is decompressed.

  Note that, depending on the type of cosmetic composition, the degree of mixing by flow-out and mixing by evaporation condensation is alleviated, and the packaging form is determined according to the type of cosmetic composition.

  The pack 1 configured in this manner has an extension rate of 15 to 50% in the vertical direction when pasted on the face, 3 to 14% in the lateral direction when pasted on the face, and is applied to the face. A 50% stretch recovery rate in the longitudinal direction when applied is 50% or more and a bleed rate of 9 to 16% is used.

  The elongation ratio in the vertical direction when the pack 1 is attached to the face is 60 mm long (length) from the pack 1 so that the longitudinal direction of the test piece is along the vertical direction when the pack 1 is attached to the face. × A test piece having a width (width) of 50 mm was cut out, the test piece was chucked at an interval of 40 mm in length, stretched at an extension rate of 80 mm / min, and the length L at a load of 1 N was measured. = [(L-40) / 40] × 100.

  When the pack 1 is pasted on the face, the elongation rate in the lateral direction is 50 mm in length (width) from the pack 1 so that the longitudinal direction of the test piece is along the lateral direction when the pack 1 is pasted on the face. A test piece having a width (length) of 60 mm was cut out, chucked at an interval of 40 mm in length, stretched at an extension speed of 80 mm / min, and the length L at a load of 1 N was measured. = [(L-40) / 40] × 100.

  This stretch rate is 15 to 50%, more preferably 19 to 40% in the longitudinal direction when the pack 1 is attached to the face, and 3 to 14%, more preferably in the lateral direction. 5-13%. When the stretch rate in the vertical direction is less than 15%, the followability to the face when the pack 1 is pasted on the face is insufficient, and the pack 1 is put on the face with the original tension of the skin being pulled out to the maximum. Cannot be installed. If the elongation ratio in the vertical direction exceeds 50%, the followability to the face when the pack 1 is attached to the face is too high and soft, and the stiffness of the pack 1 is lost. Even when the stretch rate in the lateral direction is less than 3%, the followability to the face when the pack 1 is affixed to the face is insufficient, and the face of the pack 1 is drawn with the skin's original tension being pulled out to the maximum. Can not be attached to. If the expansion ratio in the lateral direction exceeds 14%, the followability to the face when the pack 1 is attached to the face is too high and soft, and the stiffness of the pack 1 is lost.

  The 50% elongation recovery rate in the vertical direction when the pack 1 is attached to the face is longitudinal (long) from the pack 1 so that the longitudinal direction of the test piece is along the vertical direction when the pack 1 is attached to the face. A) A test piece of 60 mm × width (width) 25 mm was cut out, chucked at an interval of 40 mm in length, and extended until the distance between chucks became 60 mm at an extension speed of 300 mm / min. It returns at a speed, and the elongation L ′ when the residual stress becomes 0 (distance between chucks when the residual stress becomes 0−distance between chucks before measurement (40 mm)) is measured from the obtained load-elongation curve. % Elongation recovery rate (%) = [[(60−40) −L ′] / (60−40)] × 100.

  The 50% elongation recovery rate in the lateral direction when the pack 1 is pasted on the face is vertical (width) from the pack 1 so that the longitudinal direction of the test piece is along the lateral direction when the pack 1 is pasted on the face. ) Cut out a test piece of 25 mm × width (length) 60 mm, chuck the test piece at an interval of 40 mm in length, and extend it until the distance between chucks becomes 60 mm at an extension speed of 300 mm / min. It returns at a speed, and the elongation L ′ when the residual stress becomes 0 (distance between chucks when the residual stress becomes 0−distance between chucks before measurement (40 mm)) is measured from the obtained load-elongation curve. % Elongation recovery rate (%) = [[(60−40) −L ′] / (60−40)] × 100.

  The 50% elongation recovery rate is such that the 50% elongation recovery rate in the longitudinal direction when the pack 1 is attached to the face is 50% or more, more preferably 55 to 75%. When the 50% elongation recovery rate is less than 50%, the pack 1 cannot be worn on the face with the original tension of the skin being pulled out to the maximum. The 50% elongation recovery rate in the lateral direction is not particularly limited, but is preferably 35% or more.

  The bleed rate is determined by pasting the pack 1 cut into a 50 mm × 50 mm square into two pieces of filter paper having a weight A (for example, 5A 150 mm manufactured by Advantech) and sandwiching the sheets between the filter papers. S is measured, and this sample is further sandwiched between two glass plates of 100 mm × 200 mm × 3 mm (100 mm × 200 mm × 3 mm) and left for 10 minutes. Thereafter, the pack 1 is removed from the sample, the weight C of the filter paper is measured, and the bleed rate R = [(CA) / (SA) from the liquid amount (CA) of the cosmetic composition bleed on the filter paper. ] × 100.

  The bleed rate is preferably 9 to 16%. When the bleed rate is less than 9%, a sufficient moist feeling after the pack 1 is applied to the face cannot be obtained, and the surface tension due to sufficient bleed of the cosmetic composition cannot be obtained. Cannot be worn on the face with the tension fully pulled out. If the bleed rate exceeds 16%, it cannot be applied in a state where the natural natural tension of the skin is fully utilized.

  In addition, the pack 1 uses what was prepared so that the force at the time of 25% expansion | extension recovery | restoration in the vertical direction when the pack 1 was affixed on the face may be 0.15-1.0N / 25mm. Moreover, what was prepared so that the force at the time of 25% elongation recovery in the lateral direction may be 0 to 0.7 N / 25 mm can be used.

  The force at the time of 25% elongation recovery is returned until the distance between the chucks (interval) becomes 50 mm at the same speed after the pack 1 is stretched under the same conditions as the measurement of the 50% elongation recovery rate. Obtained by measuring the force at 25% elongation recovery.

  Of the force at 25% elongation recovery, if the force at 25% elongation recovery in the vertical direction is less than 0.15 N / 25 mm, the followability to the face when the pack 1 is attached to the face is too high. The softness of the pack 1 will be lost, and if it exceeds 1.0 N / 25 mm, the stiffness of the pack 1 will be excessive, and the followability to the face when the pack 1 is affixed to the face. Will be insufficient.

  Moreover, the pack 1 may use what was prepared so that the vertical adhesive force might be 0.020-0.028N / 12mmphi.

  The vertical adhesive force was obtained by pressing a 12 mm diameter SUS304 cylinder onto the surface of the gel layer 31 of the pack 1 cut to 30 mm × 30 mm square at a speed of 1 mm / min to a load of 0.294 N for 10 seconds. Thereafter, the film is peeled off at a speed of 300 mm / min, and the force required for peeling is measured as a vertical adhesive force.

  When this vertical adhesive strength is less than 0.020 N / 12 mmφ, the feeling of close contact with the skin of the face when the pack 1 is affixed to the face is insufficient, and when it exceeds 0.028 N / 12 mmφ, the pack 1 When it is applied to the face, it cannot be applied in the state where the natural tension of the skin is fully utilized, and the skin of the face is physically strengthened, and the handling of the pack 1 itself is handled. Sexuality will deteriorate.

  Further, the pack 1 has a force at the time of 50% elongation in the vertical and horizontal directions when the pack 1 is applied to the face in the vertical direction of 0.4 to 5.0 N / 25 mm, and in the horizontal direction of 1.5 to 8 The one prepared to be 5 N / 25 mm may be used.

  This 50% elongation force is obtained by cutting a test piece 25 mm wide by 60 mm long from the pack 1 so that the longitudinal direction of the test piece is along the vertical and horizontal directions when the pack 1 is attached to the face. The test piece is chucked at an interval of 40 mm in length, and is measured by measuring the force when the test piece is extended at an extension speed of 300 mm / min until the distance between chucks reaches 60 mm.

  The force at the time of 50% elongation is not particularly limited, but if the longitudinal direction is less than 0.4 N / 25 mm, the followability to the face when the pack 1 is attached to the face is too high and soft. If the pack 1 exceeds 5.0 N / 25 mm, the pack 1 is excessively soft and the followability to the face when the pack 1 is applied to the face is insufficient. Will be. If the width is less than 1.5 N / 25 mm in the lateral direction, the followability to the face when the pack 1 is attached to the face is too high and soft, and the stiffness of the pack 1 is lost. If it exceeds 25 mm, the stiffness of the pack 1 will be excessive, and the followability to the face when the pack 1 is attached to the face will be insufficient.

  Hereinafter, although an example and a comparative example explain the present invention, the present invention is not limited to this. First, a method for measuring the thickness of the entire pack, a method for measuring the thickness of the gel layer, a method for measuring the thickness of the intermediate layer, and a method for measuring the thickness of the substrate excluding the intermediate layer will be described.

[Method for measuring the thickness of the entire pack]
The thickness of the entire pack was determined by cutting the pack, measuring the thickness at five locations in a microscope (digital microscope) photograph of the cross section, and averaging the measured values.

[Measurement method of gel layer thickness]
The thickness of the gel layer (the gel-only portion) was determined by visually measuring the thickness at five locations in the microscope photograph of the cross section and averaging the measured values.

[Method for measuring thickness of intermediate layer]
The thickness of the intermediate layer (portion where the gel penetrated in the base material) was calculated by the following formula for a rectangular test piece cut out from the pack.
(Thickness of intermediate layer) = (Weight of pack) − (Weight of gel layer) − (Weight of base material)
/ {(Gel density) × (gel area)}
In each of the following examples, the dimensions of the test pieces used for measuring the thickness of the intermediate layer were unified.

The density of the gel was measured by the following procedure.
(1) A gel sheet having a predetermined thickness d and containing no substrate is prepared.
(2) The gel sheet obtained in (1) is cut into a predetermined area S, and the weight W is measured with an electronic balance.
(3) The density of the gel is calculated from the following formula.
(Gel density) = W / (d × S)
The area of the gel was the product of the vertical length and the horizontal length of the test piece.

The weight of the pack was measured with an electronic balance. Moreover, the weight of the gel layer was calculated by the following formula.
(Gel layer weight) = (Gel layer thickness) × (Gel density) × (Gel area)

The weight of the substrate was calculated by the following formula.
(Weight of base material) = (Base weight of base material) × (Area of base material)
The area of the substrate was the product of the vertical length and the horizontal length of the test piece.

[Measurement method of substrate thickness excluding intermediate layer]
The thickness of the substrate excluding the intermediate layer (portion where the gel did not penetrate) in the substrate was calculated by the following formula.
(Thickness of base material excluding intermediate layer)
= (Thickness of the whole pack)-(Thickness of gel layer)-(Thickness of intermediate layer)

[Example 1]
Water (69.90 wt%), sodium polyacrylate (polymer skeleton: 3.5 wt%), magnesium aluminate metasilicate (crosslinking agent: 0.8 wt%), dipropylene glycol (humectant: 10 wt%) %), Polyethylene glycol 1000 (bleed accelerator: 2.0% by weight), glycerin (humectant: 1.0% by weight), diglycerin (humectant: 4.0% by weight), xanthan gum (viscous agent: 0.0%). 3 wt%), olive squalane (humectant: 2.0 wt%), hydrolyzed collagen (plant / animal extract: 0.1 wt%), phenoxyethanol (preservative): 0.4 wt%) Add 30% by weight tartaric acid aqueous solution (cross-linking accelerator: water 4.2% by weight, tartaric acid 1.8% by weight) to a glass or plastic container. pH was prepared 5 of the gel composition.

Nonwoven fabric made of PET fiber (manufactured by Daiwabo Polytech Co., Ltd .: product name TT-) by a needle punch method with a basis weight of 83 g / m ² so that the time from the start of addition of the 30 wt% aqueous tartaric acid solution to the completion of coating is 3 minutes. 70), a gel composition is applied onto the base material, a polyester release film as a protective film is placed on the gel composition, and after aging for 24 hours, the base material and a gel layer composed of the gel And an intermediate layer in which a part of the gel permeates the base material, and the thickness of the gel including the gel layer and the intermediate layer (hereinafter simply referred to as “gel thickness”) is 0.67 mm A pack having a total pack thickness of 0.90 mm was obtained.

[Examples 2 to 4]
The coating amount of the gel composition was changed, and the gel thicknesses were 0.54 mm (total pack thickness 0.80 mm), 0.90 mm (total pack thickness 1.20 mm), 1.02 mm (total pack thickness 1), respectively. A pack was obtained in the same manner as in Example 1 except that the thickness was .40 mm).

[Example 5]
Example 1 In the same manner as in Example 1 except that the base material was a non-woven fabric made of PET fiber (Daiwabo Polytech Co., Ltd .: product name NI-75) by a needle punch method with a basis weight of 75 g / m ^2. Thus, a pack having a gel thickness of 0.85 mm and a total pack thickness of 1.00 mm was obtained.

[Example 6]
Example 1 In the same manner as in Example 1 except that the base material was a non-woven fabric made of PET fiber (Daiwabo Polytech Co., Ltd .: product name QZ-90) by a needle punch manufacturing method with a basis weight of 90 g / m ^2. Thus, a pack having a gel thickness of 0.74 mm and a total pack thickness of 1.05 mm was obtained.

[Example 7]
In Example 1 above, except that the base material was a nonwoven fabric made of PET fiber by the spunlace manufacturing method with a basis weight of 90 g / m ² (Nippon Vilene Co., Ltd. product name: EW7900), the same as in Example 1 above, A pack having a gel thickness of 0.94 mm and a total pack thickness of 1.15 mm was obtained.

[Example 8]
In Example 1 above, except that the base material was a non-woven fabric made of PET fiber by the spunlace manufacturing method with a basis weight of 80 g / m ² (Nippon Vilene Co., Ltd. product name: EW2080S), the same as in Example 1 above, A pack having a gel thickness of 0.83 mm and a total pack thickness of 1.10 mm was obtained.

[Example 9]
In Example 1 above, except that the base material was a non-woven fabric made of PP fiber by the spunlace manufacturing method with a basis weight of 95 g / m ² (Nihon Vilene Co., Ltd. product name: EL5600T), the same as in Example 1 above, A pack having a gel thickness of 0.80 mm and a total pack thickness of 1.35 mm was obtained.

[Comparative Example 1]
In Example 3 above, the base material was a cellulose (cupra) non-woven fabric (Asahi Kasei Fibers Co., Ltd. product name: Benlyse (registered trademark) SE603) produced by a spunbond manufacturing method and a spunlace manufacturing method with a basis weight of 60 g / m ^2. In the same manner as in Example 3, a pack having a gel thickness of 0.8 mm and a total pack thickness of 0.8 mm was obtained.

[Comparative Example 2]
In Example 3 above, the base material was a cellulose (cupra) non-woven fabric (Asahi Kasei Fibers Co., Ltd. product name: Benlyse (registered trademark) SE803) manufactured by a spunbond manufacturing method and a spunlace manufacturing method with a basis weight of 80 g / m ^2. In the same manner as in Example 3, a pack having a gel thickness of 0.8 mm and a total pack thickness of 0.8 mm was obtained.

[Comparative Example 3]
In Example 3 above, the base material was a cellulose (cupra) non-woven fabric (Asahi Kasei Fibers Co., Ltd. product name: Benlyse (registered trademark) SE103) by a spunbond manufacturing method and a spunlace manufacturing method with a basis weight of 100 g / m ^2. In the same manner as in Example 3, a pack having a gel thickness of 0.8 mm and a total pack thickness of 0.8 mm was obtained.

[Comparative Example 4]
In Example 3 above, the base material was changed to a non-woven fabric made of polyolefin elastomer by the spunbond manufacturing method with a basis weight of 70 g / m ² (Idemitsu Unitech Co., Ltd .: product name Straflex (registered trademark) UN5070). In the same manner as in Example 3, a pack having a gel thickness of 0.8 mm and a total pack thickness of 0.8 mm was obtained.

[Comparative Example 5]
In Example 3 above, the gel thickness was 0 as in Example 3 except that the base material was a polyurethane film having a thickness of 0.04 mm (manufactured by Komatsu Seiren Co., Ltd .: product name ST2641). A pack having a thickness of 0.84 mm and a thickness of 0.84 mm was obtained.

[Comparative Example 6]
Example 3 is the same as Example 3 except that the base material is a composite base material made of polyurethane film and polyester woven fabric having a thickness of 0.4 mm (manufactured by Komatsu Smelting Co., Ltd .: product name 575). Thus, a pack having a gel thickness of 0.8 mm and a total pack thickness of 1.2 mm was obtained.

[Comparative Example 7]
Isostearyl glyceryl ether (2.0% by weight), sodium polyacrylate (6.0% by weight), polyacrylic acid (2.5% by weight), glycerin (25.0% by weight), isopropyl myristate (2. 0 wt%), squalane (4.0 wt%), aluminum hydroxide gel (0.2 wt%), light anhydrous silica (2.0 wt%), polysorbate 80 (2.0 wt%), purified water ( A gel composition was prepared by uniformly mixing each component of (balance).

The above-mentioned gel composition is applied onto a polyester release film, and a polyester non-woven fabric (Daiwabo Polytech Co., Ltd .: product name TT-70) by a needle punch manufacturing method with a basis weight of 83 g / m ^{2 is} further applied on the gel composition. And after aging for 24 hours, a base material, a gel layer composed of a gel, and an intermediate layer composed of a part of the gel permeating the base material, the gel thickness being 0.4 mm A pack having a total pack thickness of 0.8 mm was obtained.

For each pack obtained in each of the above Examples and Comparative Examples, the measurement items shown in Table 1 and Table 2 were measured. In addition, the measurement of the elongation rate, the force at the time of 50% elongation, the force at the time of 50% elongation recovery, and the force at the time of 25% elongation recovery was carried out using a tensile tester manufactured by Orientec Co., Ltd .: RTE-1210. . The measurement of vertical adhesive force was performed using Rheometer: CR-200D manufactured by Sun Science Co., Ltd.
The results are shown in Tables 1 and 2.

  In Table 1 and Table 2, the evaluation items of the back-through to the base material not described above and the peelability from the base material were evaluated as follows.

  Presence / absence of exudation to the back surface of the base material (back through to the base material): Whether the coated gel composition is exuding to the back surface of the base material (the back surface of the surface coated with the gel composition) It was confirmed visually. The case where it did not bleed was designated as “no”, and the case where it oozed out was designated as “present”.

Moreover, sensory evaluation was performed about each item shown in Table 3 about each pack obtained by each said Example and comparative example.
The results are shown in Table 3.

  In Table 3, each evaluation item was evaluated as follows after two testers peeled off the pack 1 from the face after 10-15 minutes after the pack 1 was attached to the face.

  A feeling of close contact with the skin: “○” when there is a feeling that the pack is following the skin when the pack is applied to the face, and the pack follows the skin when the pack is attached to the face The case where there was no sense of being “X” was assigned.

  Skin tension: When the pack is applied to the face, “○” indicates that the skin is attracted to the pack side and the entire skin is stretched with a relaxed feeling, and the pack is applied to the face. When the skin is stretched, it does not feel like it is drawn to the pack side, but “△” indicates that the skin is in a relaxed state, and the skin is strongly tensioned when the pack is applied to the face A case where an impression of the above feeling was generated was designated as “x”.

  Moist feeling after sticking: “○” indicates that a fresh feeling remains after the pack is peeled off the face, and “×” indicates that no fresh feeling remains after the pack is peeled off from the face.

  From the above sensory evaluation, the pack according to the present invention has a good feeling of adhesion to the skin as compared with the packs of each comparative example, and can be applied to the face in a state in which the original tension of the skin is drawn out to the maximum. It was confirmed that moisture can be supplied to the skin.

1 pack 2 base material 3 gel 31 gel layer 32 intermediate layer

Claims (5)

It has a base material composed of a nonwoven fabric or a woven fabric, a gel layer composed of a gel, and an intermediate layer composed of a part of the gel permeating the base material, and at least the cosmetic composition is retained in the gel Is a sheet-like pack that is used by pasting the gel on the face,
The pack has a stretch rate of 15 to 50% in the vertical direction and 3 to 14% in the horizontal direction measured by the following method in the vertical and horizontal directions when applied to the face, and the vertical length when applied to the face. 50% elongation recovery ratio measured in the following manner in the direction of 50% or more, less bleed rate as measured by the method is from 9 to 16% der is, the ratio of the thickness of the intermediate layer to the entire gel thickness 10 Pack characterized by being -90% .
Method for measuring elongation rate: A pack of width 50 mm × length 60 mm is chucked at an interval of 40 mm, stretched at an elongation rate of 80 mm / min, length L at a load of 1 N is measured, and elongation rate (%) = [(L-40) / 40] × 100 is calculated.
Method for measuring 50% elongation recovery rate: A pack having a width of 25 mm and a length of 60 mm is chucked at an interval of 40 mm, stretched at an elongation speed of 300 mm / min until the distance between chucks reaches 60 mm, and then the same speed Measure the elongation L ′ when the residual stress becomes 0 (distance between chucks when the residual stress becomes 0−distance between chucks before measurement (40 mm)) from the obtained load-elongation curve, 50% Elongation recovery rate (%) = [[(60-40) -L ′] / (60-40)] × 100 is calculated.
Measurement method of bleed rate: A pack cut into a 50 mm × 50 mm square is attached to one side of a filter paper having a weight A folded in half and sandwiched between the filter papers to make a sample, and the weight S of the sample is measured. It is further sandwiched between two glass plates of 100 mm × 200 mm × 3 mm and left for 10 minutes. Thereafter, the pack is removed from the sample, the weight C of the filter paper is measured, and the bleeding rate R = [(CA) / (SA)] from the liquid amount (CA) of the cosmetic composition bleed on the filter paper. Calculate x100. 2. The pack according to claim 1, wherein the force at the time of 25% elongation recovery measured by the following method in the longitudinal direction when pasted on the face is 0.15 to 1.0 N / 25 mm.
25% extension recovery force: After the pack was extended under the same conditions as when measuring the 50% extension recovery rate, the pack was returned at the same speed until the chuck-to-chuck distance became 50 mm. Measure as the force. The pack according to claim 1, wherein the pack has a vertical adhesive force measured by the following method of 0.020 to 0.028 N / 12 mmφ.
Measuring method of vertical adhesive force: SUS304 cylinder having a diameter of 12 mm was pressed against a gel surface of a pack cut into 30 mm × 30 mm square at a speed of 1 mm / min to a load of 0.294 N, and contacted for 10 seconds. , Peeling at a speed of 300 mm / min, and measuring the force required for peeling at that time as the vertical adhesive force. The pack according to any one of claims 1 to 3, wherein the pack has a non-woven fabric basis weight of 75 to 100 g / m ² and a gel thickness of 0.3 to 1.5 mm.   5. The pack according to claim 1, wherein the pack is formed in a size corresponding to the entire face, a size corresponding to the upper half of the face, or a size corresponding to the lower half of the face. Pack as described in.

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