JP5192784B2 - Aerosol product and discharge method thereof - Google Patents

Description

  The present invention relates to an aerosol product and a discharge method thereof. More specifically, the present invention relates to an aerosol product comprising an aqueous stock solution and a liquefied gas, wherein an aerosol composition in which the aqueous stock solution and the liquefied gas are emulsified is filled in an aerosol container equipped with an injection member, and a method for discharging the aerosol product .

  Patent Document 1 includes an aqueous stock solution containing a water-soluble polymer, a surfactant and a lower alcohol and a liquefied gas. The lower alcohol is contained in an aqueous stock solution in an amount of 1 to 30% by weight, and the boiling point is −5 ° C. or lower. The technique of an aerosol composition containing 38% by weight or more of the liquefied gas in the aerosol composition is disclosed. When the aerosol composition is discharged, a foam is made.

  Patent Document 2 discloses an aerosol formulation comprising a stock solution composed of an active ingredient, water, a lower alcohol, and a specific surfactant, and a propellant. In the aerosol preparation, the discharged material freezes on the adhesion surface and becomes a sherbet.

JP 2003-335629 A JP 2000-351725 A

  However, since the aerosol composition of Patent Document 1 contains a water-soluble polymer, when it is ejected, it becomes a slightly viscous foam, and the foam emits a loud foaming sound, and a comfortable feeling of use due to the foam breaking is obtained. There is a problem that the cooling effect is not sustained.

  In addition, the aerosol formulation of Patent Document 2 forms a sherbet that freezes the entire discharged substance, and an excellent cooling effect is obtained. However, the sherbet is hard as a whole and from the portion that is in contact with the skin due to the heat of the skin. Since it dissolves easily, there is a problem that the sherbet tends to flow down.

  In addition, the aerosol product forming the sherbet has a smaller cross-sectional area than the injection passage and is directly injected from the injection passage 46 in order to adhere to the injection object continuously and to easily transmit the heat of vaporization of the liquefied gas to the discharge. The injection member 48 provided with the straight-shaped (cylindrical) injection hole (discharge hole 47) which can be used is used (refer FIG. 7). Therefore, there is a problem that the jetted object is vigorously jetted and easily scattered.

  The aerosol product of the present invention and the discharge method thereof have been made in view of the above-described conventional problems. When discharged to the skin, the discharged product is not foamed largely and partly freezes into a soft sleet, which is excellent. A cooling effect is obtained, and spreading this discharge with fingers or palms gives a crisp and comfortable feeling of use. Furthermore, `` sleet '' contains bubbles, or there are bubbles in the surroundings, so the flow from the injection surface falls off Aerosol products that can be applied effectively without any splashing during discharge, because it is easy to maintain this state because heat is not easily transmitted directly from the skin to the sleet, and the feeling of cooling is maintained. It aims at developing the discharge method.

  The aerosol product according to the present invention is an aerosol product comprising an aqueous stock solution and a liquefied gas, and an aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified is filled in an aerosol container equipped with an injection member, The aqueous stock solution contains a water-soluble polymer and a surfactant, the mixing ratio of the aqueous stock solution and the liquefied gas in the aerosol composition is 50/50 to 10/90 (weight ratio), and the injection member Is provided with a mounting portion attached to the stem of the aerosol container, an injection passage, and a discharge hole, and an expansion having a cross-sectional area larger than the cross-sectional area of the injection passage between the injection passage and the discharge hole. It is characterized by having a chamber. The aerosol product discharge method according to the present invention is as follows. (1) At the time of discharge, at least a part of the aqueous stock solution and the liquefied gas emulsified passes through the injection passage of the injection member attached to the stem of the aerosol container. Vaporizing in an expansion chamber provided between the injection passage and the discharge hole and having a cross-sectional area larger than the cross-sectional area of the injection passage; and (2) an aerosol composition cooled by vaporization of the liquefied gas. And a step of discharging from the discharge hole.

  The water-soluble polymer is preferably a polysaccharide, cellulose, alginate, or a mixture thereof.

  It is preferable that 3 to 30% by weight of alcohol is contained in the aqueous stock solution.

  It is preferable that the injection member is provided with a collision portion that closes an open end of the expansion chamber.

  It is preferable that the discharge hole is an annular hole provided in a gap between the injection member and the collision portion.

  According to the aerosol product and the discharge method thereof according to the present invention, almost all of the liquefied gas contained in the discharged product is not instantaneously vaporized at the time of discharging. Without any icing on the whole, the ejected material is soft and sloppy with foaming suppressed and partially icing, and it feels cool and comfortable without overcooling. When applied with, it gives a crisp and comfortable feeling of use.Furthermore, the flow from the spray surface is prevented, and heat is not easily transferred from the skin to the sleet, so this state is easily maintained and the cooling effect is sustained. Furthermore, there is no scattering at the time of discharge, and it can be applied effectively.

  The aerosol product of the present invention is an aerosol product comprising an aqueous stock solution and a liquefied gas, wherein an aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified is filled in an aerosol container equipped with an injection member, The stock solution contains a water-soluble polymer and a surfactant, the mixing ratio of the aqueous stock solution and the liquefied gas in the aerosol composition is 50/50 to 10/90 (weight ratio), and the injection member is An expansion chamber having a cross-sectional area larger than a cross-sectional area of the injection passage is provided between the injection passage and the discharge hole, the mounting portion being attached to the stem of the aerosol container, an injection passage, and a discharge hole. This is an aerosol product. Also, there is provided a method for discharging an aerosol product comprising an aqueous stock solution and a liquefied gas, and an aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified, and (1) emulsifying with the aqueous stock solution during discharge. At least a part of the liquefied gas passing through the injection passage of the injection member mounted on the stem of the aerosol container is larger than the cross-sectional area of the injection passage provided between the injection passage and the discharge hole. An aerosol product discharge method comprising: a step of vaporizing in an expansion chamber having an area; and (2) a step of discharging an aerosol composition cooled by vaporization of a liquefied gas from the discharge hole.

  FIG. 1 is a partial cross-sectional view of one embodiment (Embodiment 1) of the aerosol product of the present invention, FIG. 2 (a) is a front view of an injection member, and FIG. 2 (b) is a bottom view of a collision member. It is. FIG. 3 is a side sectional view of an injection member in one embodiment (Embodiment 2) of the aerosol product of the present invention. FIG. 4 is a side sectional view of an injection member in one embodiment (Embodiment 3) of the aerosol product of the present invention. FIG. 5A is a side sectional view of an injection member in one embodiment (Embodiment 4) of the aerosol product of the present invention, and FIG. 5B is a top sectional view thereof. FIG. 6 is a side sectional view of an injection member in one embodiment (Embodiment 5) of the aerosol product of the present invention. FIG. 7 is a side sectional view of an injection member in a conventional aerosol product.

  The aerosol product of the present invention is an aerosol product in which an aerosol composition in which an aqueous stock solution and a liquefied gas are emulsified is filled in an aerosol container equipped with an injection member, the aqueous stock solution comprising a water-soluble polymer and a surfactant. A mounting ratio of the aqueous stock solution and the liquefied gas in the aerosol composition is 50/50 to 10/90 (weight ratio), and the spray member is mounted on a stem of the aerosol container An expansion chamber having a cross-sectional area larger than the cross-sectional area of the injection passage is provided between the injection passage and the discharge hole.

  The water-soluble polymer adjusts the viscosity of the aqueous stock solution and the aerosol composition, vaporizes a part of the liquefied gas emulsified with the aqueous stock solution in the expansion chamber, and cools by the heat of vaporization to foam the discharged material. It is used for the purpose of suppressing the pressure and making the part icy by icing, further generating a crisp sound when spreading and obtaining a pleasant feeling of use, and making it difficult for the discharged matter to flow down. .

  Examples of the water-soluble polymer include polysaccharides such as xanthan gum, locust bean gum, gellan gum, guar gum, pectin, carrageenan, starch, and hyaluronic acid, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, nitrocellulose, crystalline cellulose, and methyl cellulose. , Celluloses such as ethyl cellulose, alginates such as sodium alginate, potassium alginate, calcium alginate, esters of alginic acid and polyol such as propylene glycol alginate, gelatin, gelatin hydrolyzate, agar, dextrin, polyvinyl alcohol, polyvinyl pyrrolidone, carboxy Examples thereof include vinyl polymers and mixtures thereof. In particular, it is preferable to use polysaccharides, celluloses, and alginates because they are excellent in holding the liquefied gas during discharge and are liable to be foamed because foaming is suppressed.

  The blending amount of the water-soluble polymer is preferably 0.01 to 5% by weight, more preferably 0.05 to 3% by weight in the aqueous stock solution. When the blending amount of the water-soluble polymer is less than 0.01% by weight, the above-mentioned effect tends to be difficult to obtain. When the blending amount is more than 5% by weight, the viscosity of the aqueous stock solution becomes too high, and the liquefied gas It is difficult to mix and emulsification becomes difficult.

  In addition, in order to adjust the state (sludge state) of the discharged material, it is preferable to mix alcohols in the aqueous stock solution.

  Examples of the alcohols include 2 to 3 valent polyols such as ethylene glycol, propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, and glycerin, and 2 to 3 carbon atoms such as ethanol and isopropanol. And monohydric alcohols. The blending amount of the alcohols is preferably 3 to 30% by weight, more preferably 3 to 25% by weight in the aqueous stock solution. When the blending amount of the alcohol is less than 3% by weight, the entire discharged matter is likely to freeze, and the adhesion is liable to decrease. When the blending amount exceeds 30% by weight, it is difficult to form a sleet.

  Further, in order to easily mix the water-soluble polymer in the aqueous stock solution, an organic acid salt may be blended in the aqueous stock solution. Examples of the organic acid salt include calcium lactate, sodium lactate, calcium citrate, and sodium citrate. The amount of the organic acid salt is preferably 0.05 to 5% by weight, more preferably 0.1 to 2% by weight in the aqueous stock solution. When the amount of the organic acid salt is less than 0.05% by weight, the above-mentioned effect is difficult to obtain, and when it exceeds 5% by weight, it is difficult to form a sleet.

  The surfactant emulsifies the aqueous stock solution and the liquefied gas in the aerosol container, holds a part of the liquefied gas in the discharged state in a liquid state, and at least a part of the liquefied gas in the expansion chamber of the injection member described later. It is blended for the purpose of obtaining effects such as vaporizing and suppressing foaming to make the ejected material spilled, or foaming a part of the ejected material to improve adhesion.

  Examples of the surfactant include POE (20) POP (8) cetyl ether, POE (20) POP (4) cetyl ether, POE (12) POP (6) decyl tetradecyl ether, POE (30) POP ( 6) polyoxyethylene polyoxypropylene alkyl ethers such as decyltetradecyl ether; polyoxyethylene glycerin fatty acid esters such as monostearic acid POE (15) glyceryl; POE (10) lanolin alcohol, POE (20) lanolin alcohol, etc. Polyoxyethylene lanolin alcohol; polyoxyethylene hydrogenated castor oil such as POE (50) hydrogenated castor oil, POE (60) hydrogenated castor oil, POE (80) hydrogenated castor oil, POE (100) hydrogenated castor oil; POE (10) Cetyl ether POE (20) cetyl ether, POE (20) stearyl ether, POE (20) oleyl ether, POE (20) lauryl ether, POE (20) behenyl ether, POE (25) octyldodecyl ether, POE (20) isocetyl ether Polyoxyethylene alkyl ethers such as POE (20) isostearyl ether; polyethylene glycol fatty acid esters such as polyethylene glycol monostearate (10 EO), polyethylene glycol monostearate (25 EO), polyethylene glycol monostearate (40 EO), etc. Surfactants (including wax and flakes), normal glyceryl monolaurate, hexaglyceryl monomyristate, monolaurate pe Tagliceryl, pentaglyceryl monomyristate, pentaglyceryl monooleate, pentaglyceryl monostearate, decaglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monostearate, decaglyceryl monooleate, mono Polyglycerol fatty acid esters such as decaglyceryl linoleate; Polyoxyethylene glycerol fatty acid esters such as monooleic acid POE (15) glyceryl; Monopalmitic acid POE (20) sorbitan, monostearic acid POE (20) sorbitan, monoisostearic acid POE (20) sorbitan, monooleic acid POE (20) polyoxyethylene sorbitan fatty acid ester such as sorbitan; monolauric acid POE ( 6) Polyoxyethylene sorbite fatty acid esters such as sorbitol, tetrastearic acid POE (60) sorbite, tetraoleic acid POE (60) sorbit; polyoxyethylene such as POE (30) hydrogenated castor oil, POE (40) hydrogenated castor oil Hydrogenated castor oil; polyoxyethylene alkyl ethers such as POE (15) oleyl ether; viscous liquid to pasty surfactants such as monooxy oil fatty acid POE (20) polyoxyethylene sorbitan fatty acid esters such as POE (20) sorbitan; tetra Polyoxyethylene sorbite fatty acid esters such as oleic acid POE (30) sorbite, tetraoleic acid POE (40) sorbite; POE (9) polyoxyethylene alkyl ethers such as lauryl ether, monolauric acid Examples include polyethylene glycol fatty acid esters such as reethylene glycol (10EO) and polyethylene glycol fatty acid monoester (10EO); surfactants that are liquid at room temperature, such as HLB of 10 to 18, preferably 11 to 17. . When the HLB is smaller than 10, the liquefied gas tends to be in a continuous phase and the discharge tends to be difficult to form a sleet. When the HLB is greater than 18, the foam becomes too large and the discharge becomes a sleet. It tends to be difficult.

  Among the surfactants, the use of a surfactant that is a viscous liquid to a paste or a solid at room temperature tends to make the discharged product sleet. Among the above-mentioned solid surfactants, polyoxyethylene polyoxypropylene alkyl ether is preferably used from the viewpoint that foamability is suppressed and a sloppy discharge is easily obtained.

  The blending amount of the surfactant is preferably 0.1 to 10% by weight, more preferably 0.3 to 5% by weight in the aqueous stock solution. When the amount of the surfactant is less than 0.1% by weight, the aqueous stock solution and the liquefied gas are less likely to be emulsified, and the liquefied gas is less likely to be retained in the discharged product, which tends to be less sloppy. Yes, if it is more than 10% by weight, it tends to remain on the skin and the feeling of use is reduced.

  Water is used to mix an aqueous stock solution with a water-soluble polymer, a surfactant, and the like to form an emulsion with a liquefied gas. Examples of the water include purified water, ion exchange water, physiological saline, and deep sea water. The water content is preferably 60 to 99.5% by weight, more preferably 70 to 99% by weight in the aqueous stock solution. When the blending amount of water is less than 60% by weight, it is difficult to form a sleet. When the blending amount is more than 99.5% by weight, the blending amount of additives such as active ingredients decreases, and the effect of active ingredients and the like is obtained. There is a tendency to become difficult.

  The aqueous stock solution used in the present invention can contain an active ingredient, an oil component, a powder and the like according to the use and purpose.

  Examples of the active ingredient include antipruritic agents such as crotamiton and d-camphor; anti-inflammatory analgesics such as methyl salicylate, indomethacin, piroxicam, felbinac and ketoprofen; oxyconazole, clotrimazole, sulconazole, bifonazole, miconazole, isconazole, Antifungal agents such as econazole, thioconazole, butenafine, and salts thereof such as hydrochloride, nitrate, acetate; astringents such as zinc oxide, allantoin hydroxyaluminum, tannic acid, citric acid, lactic acid; allantoin, glycyrrhetinic acid, Anti-inflammatory agents such as dipotassium glycyrrhizinate and azulene; local anesthetics such as dibucaine hydrochloride, tetracaine hydrochloride, lidocaine, lidocaine hydrochloride; diphenhydramine, diphenhydramine hydrochloride, male Antihistamines such as chlorpheniramine acid; bactericidal disinfectants such as paraoxybenzoate, sodium benzoate, potassium sorbate, phenoxyethanol, benzalkonium chloride, benzethonium chloride, chlorhexidine chloride, photosensitizer, parachlormetacresol; 1-menthol Anti-perspirants such as chlorohydroxyaluminum; Moisturizers such as collagen, xylitol, sorbitol, carolinic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, casein, lecithin, urea; lauric acid methacrylate Deodorizers such as methyl benzoate, methyl phenylacetate, geranyl crotolate, acetophenone myristate, benzyl acetate, benzyl propionate; N, N-diethyl-m-toluamide ( Pest repellents such as diet) and caprylic acid diethylamide; amino acids such as glycine, alanine, leucine, serine, tryptophan, cystine, cysteine, methionine, aspartic acid, glutamic acid, arginine; diethylaminohydroxybenzoyl hexyl benzoate, paramethoxycinnamic acid UV absorbers such as 2-ethylhexyl, ethylhexyltriazone, oxybenzone, hydroxybenzophenone sulfonic acid, sodium dihydroxybenzophenone sulfonate, dihydroxybenzophenone; UV scattering agents such as zinc oxide, titanium oxide, octyltrimethoxysilane-coated titanium oxide; retinol, Retinol acetate, retinol palmitate, calcium pantothenate, ascorbic acid, sodium ascorbate, dl vitamins such as α-tocopherol, tocopherol acetate, tocopherol, tocopherol nicotinate, dibenzoylthiamine, riboflavin and mixtures thereof; antioxidants such as ascorbic acid, α-tocopherol, dibutylhydroxytoluene, butylhydroxyanisole; peony extract, Extracts such as loofah extract, rose extract, lemon extract, aloe extract, ginger root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, silk extract; whitening agents such as arbutin, kojic acid; natural flavors, And various fragrances such as synthetic fragrances.

  The amount of the active ingredient is 0.05 to 20% by weight, preferably 0.1 to 15% by weight in the aqueous stock solution. When the amount of the active ingredient is less than 0.05% by weight, the effect of the active ingredient tends not to be sufficiently exhibited. When the amount is more than 20% by weight, the active ingredient concentration becomes too high, depending on the active ingredient. May adversely affect the human body.

  In addition to improving the feeling of use, the oil component is used for the purpose of adjusting the emulsified state of the aqueous stock solution and the liquefied gas, adjusting the state of the discharged product, and the like.

  Examples of the oil component include hydrocarbon oils such as isohexane, liquid paraffin, squalene, squalane, petrolatum, paraffin, and isoparaffin; diisopropyl adipate, diethoxyethyl succinate, dioctyl succinate, isopropyl myristate, isopropyl palmitate, Ester oils such as myristic acid PPG-3 benzyl ether, acetostearyl 2-ethylhexanoate, di-2-ethylhexyl adipate; methyl polysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, Methylcyclopolysiloxane, tetrahydrotetramethylcyclotetrasiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, methylhydrogen Silicone oils such as polysiloxane and methylphenylpolysiloxane; fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, linoleic acid, linolenic acid; lauryl alcohol, myristyl alcohol, cetyl alcohol Higher alcohols such as stearyl alcohol, aralkyl alcohol, behenyl alcohol and lanolin alcohol; oils and fats such as avocado oil, macadamia nut oil, shea fat, olive oil and camellia oil; waxes such as beeswax and lanolin wax;

  The blending amount of the oil component is preferably 0.1 to 10% by weight, more preferably 0.5 to 8% by weight in the aqueous stock solution. When the blending amount of the oil component is less than 0.1% by weight, the effect of blending the oil component is difficult to obtain, and when it is greater than 8% by weight, the feeling of use is deteriorated, for example, the drying property is deteriorated.

  The powder is used as an emulsification aid, such as facilitating emulsification of an aqueous stock solution and liquefied gas, and improving emulsification stability. Further, the powder itself can act as an active ingredient, or can be used as a carrier or an adhesive that carries other active ingredients.

  Examples of the powder include talc, zinc oxide, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, silica, zeolite, ceramic powder, and boron nitride. can give.

  The blending amount of the powder is preferably 0.1 to 5% by weight, more preferably 0.3 to 3% by weight in the aqueous stock solution. When the blending amount of the powder is less than 0.1% by weight, it is difficult to obtain the effect of blending the powder, and when the blending amount is more than 5% by weight, the discharge holes of the valve and the discharge member are easily clogged. Further, when stored for a long time in a stationary state, the powder tends to harden at the bottom of the container (caking), making it difficult to discharge a uniform composition.

  The aqueous stock solution used in the present invention can be prepared by dissolving or dispersing a water-soluble polymer, a surfactant, alcohols blended as necessary, an organic acid salt, an active ingredient and the like in water. The water-soluble polymer may be added to water after being mixed with alcohol and moistened. In addition, when blending an ingredient that does not dissolve in water or alcohol, such as an active ingredient or an oil ingredient, it may be emulsified at the time of preparing the aqueous stock solution, but after leaving the aqueous stock solution in a separated state and filling with a liquefied gas, Both the liquefied gas and the aqueous stock solution may be emulsified.

  The liquefied gas is a liquid in an aerosol container and is emulsified with an aqueous stock solution to form an emulsion. When it is discharged from the aerosol container, it starts to vaporize from the inside of the injection passage, but immediately after discharge, a part of it is contained in a liquid state in the aqueous stock solution, and vaporizes in the expansion chamber having a cross-sectional area larger than the cross-sectional area of the injection passage. The amount increases, and the discharged material is cooled to suppress foaming and partly freezes to form a sleet.

  Examples of the liquefied gas include propane, normal butane, isobutane, and liquefied petroleum gas that is a mixture thereof, dimethyl ether, a mixture of the liquefied petroleum gas and dimethyl ether, and the like. In addition, in order to adjust the state of each discharge product, hydrocarbons having 5 to 6 carbon atoms such as n-pentane, isopentane, normal hexane and isohexane, and hydrofluoro such as methyl perfluorobutyl ether and ethyl perfluorobutyl ether are used. Ether or the like may be blended in the liquefied gas.

  Among the liquefied gas, 60% by weight of liquefied petroleum gas in the liquefied gas, because it is easy to emulsify with the aqueous stock solution and is excellent in emulsification stability, and it is easy to make foam that foams and makes a bubble breaking sound. In addition, it is preferable to use those containing 70% by weight or more.

  The aerosol composition of the present invention is prepared, for example, by filling a pressure-resistant container with an aqueous stock solution and then filling a liquefied gas with an undercup filling or the like, then fixing the valve, and shaking the aerosol container to separate the aqueous stock solution and the liquefied gas. It can be prepared by emulsifying.

  The mixing ratio (weight ratio) between the aqueous stock solution and the liquefied gas is 50/50 to 10/90, and preferably 45/55 to 15/85. When the blending ratio is larger than 50/50, that is, when the blending amount of the liquefied gas is less than 50% by weight in the aerosol composition, the self-cooling ability of the liquefied gas is insufficient, and the ejected matter is large immediately after ejection. When the blending ratio is less than 10/90, that is, when the blending amount of the liquefied gas is more than 90% by weight, it is difficult to emulsify the liquefied gas and the emulsification tends to be unstable. . In addition, the entire discharged material is likely to freeze, and the adhesion is likely to decrease.

  In order to adjust the pressure of the aerosol composition, a compressed gas such as carbon dioxide, nitrogen gas, compressed air or oxygen gas can be used as a pressurizing agent.

  The aerosol container filled with the aerosol composition is not particularly limited. The container body is molded or processed into a bottomed cylindrical shape from a metal such as aluminum or tinplate, a synthetic resin such as polyethylene terephthalate, or pressure-resistant glass. The one to which an aerosol valve is fixed can be used.

  The aerosol valve preferably has a structure in which only the liquid phase of the aerosol composition is discharged in order to contain the liquefied gas in the liquid state in the discharged material immediately after the discharge and to make the discharged material into a squirrel shape. Specifically, when aerosol products are used in an upright state, those that do not have a vapor tap hole for introducing the gas phase of the aerosol composition into the housing, or when aerosol products are used in an inverted state, from the housing It is preferable to use one that directly introduces the liquid phase of the aerosol composition.

  Hereinafter, the structure of the aerosol container provided with the injection member for making the aerosol product of this invention into a sleet form is demonstrated.

Embodiment 1
As shown in FIGS. 1 and 2, the aerosol product 1 according to the first embodiment includes an aerosol container 4 in which an aerosol valve 3 is fixed to an opening of a container body 2 and an injection attached to a stem 5 of the aerosol valve 3. It consists of the member 6 and the aerosol composition 7 with which the aerosol container 4 is filled.

  The injection member 6 expands in a funnel shape so as to cover the stem attachment portion 8 attached to the stem 5 of the aerosol valve 3, the cylindrical injection passage 9 communicating with the stem attachment portion 8, and the periphery of the injection passage 9. It consists of the injection member main body 11 provided with the opening part 10, and the collision member 13 with which the cylinder part 12 of the injection passage 9 is mounted | worn.

  As shown in FIG. 2B, the collision member 13 includes a convex cover portion 14 for covering the opening 10 of the injection member main body 11, and a shaft portion 15 provided at the center of the cover portion 14. Consists of. The shaft portion 15 has a cross-sectional shape, and when inserted into the cylindrical portion 12 of the injection passage 9, four grooves 16 are formed by the injection passage 9 and the shaft portion 15.

  As shown in FIG. 1, in the state where the collision member 13 is mounted on the injection member main body 11, the gap between the inner periphery of the opening 10 and the outer periphery of the cover portion 14 becomes the discharge hole 17, and the funnel A space between the inside of the opening 10 expanding in a shape and the collision member 13 becomes an expansion chamber 18. The cross-sectional area of the expansion chamber 18 is larger than the cross-sectional area of the injection passage 9, and is preferably 1.5 to 25 times, more preferably 2 to 20 times.

  When the top surface of the injection member 6 is pushed down with a finger, the stem 5 of the aerosol valve 3 is lowered to open the stem hole, and the aerosol composition 7 in the aerosol container 4 passes through the stem passage from the stem hole to the injection member. 6 are supplied to the six injection passages 9. Furthermore, it passes through the groove 16 formed by the shaft portion 15 and the injection passage 9 and collides with the collision portion 19 on the inner surface of the cover portion 14. The motive force of injection is suppressed, and the liquefaction emulsified with the aqueous stock solution in the expansion chamber 18. A part of the gas is vaporized. At this time, the discharged material is cooled by the vaporization of the liquefied gas, and foaming is suppressed, and part of the discharged material is frozen to form a sleet, and passes through a plurality of recesses 20 formed in an annular shape at the tip of the opening 10 (FIG. 2). (See (a)), and is discharged from an annular discharge hole 17 formed between the inner periphery of the opening 10 and the outer periphery of the cover 14. As a result, the liquefied gas is likely to be concentrated in the expansion chamber 18 without being vigorously jetted onto the jetting target, so that foaming is suppressed and a part of the icing is easily frozen. The spilled discharge has an excellent cooling effect, and when applied with a finger or palm, it gives a crisp feel, does not flow down from the spray surface, and heat is not easily transferred directly from the skin to the sleet Therefore, this state can be easily maintained, and foam can be formed that can be applied effectively without scattering during ejection.

Embodiment 2
As shown in FIG. 3, the aerosol product injection member 21 according to the second embodiment includes a stem mounting portion 22, an injection member main body 24 having an injection passage 23, and a collision attached to an opening of the injection member main body 24. Member 25.

  In the injection passage 23 of the injection member main body 24, an upper injection passage 26 is formed above the stem mounting portion 22, extends from the upper portion of the upper injection passage 26 to the side, and has a smaller cross-sectional area than the upper injection passage 26. A side injection passage 27 is formed. Furthermore, a cylindrical opening having a passage having a cross-sectional area larger than that of the side injection passage 27 is provided inside, and the internal space of the opening acts as the expansion chamber 28. Note that the cross-sectional area of the expansion chamber 28 is preferably larger than the cross-sectional area of the upper injection passage 26.

  The collision member 25 is provided on the outer periphery of the cover part 29 on the disc, the collision part 30 protruding from the center of the cover part 29, the plurality of discharge holes 31 provided around the collision part 30, and the cover part 29. And a cylindrical mounting portion (not shown). The collision member 25 is mounted so as to cover the opening of the injection member main body 24.

  In the present embodiment, as in the first embodiment, when the injection member 21 is pushed down to open the stem hole, the aerosol composition inside the aerosol container passes from the stem hole through the passage in the stem, and the upper injection passage 26 of the injection member 21. , Supplied to the side injection passage 27. Since the cross-sectional area of the side injection passage 27 is smaller than that of the upper injection passage 26, the flow velocity is increased. However, since the collision with the collision portion 30 immediately after entering the expansion chamber 28, the momentum of injection is sufficiently suppressed, Vaporization of the liquefied gas emulsified with the aqueous stock solution tends to occur in the expansion chamber 28, and the discharged material tends to be sloppy.

Reference form 3
As shown in FIG. 4, the aerosol product injection member 32 of the reference form 3 is the aerosol product injection member of Embodiment 2 except that the nozzle 33 of the injection member 32 body is long and does not include a collision member. 21. Since the volume of the expansion chamber 34 is increased by lengthening the nozzle 33, the liquefied gas is easily vaporized in the expansion chamber 34 without providing a collision member, and can be discharged in a sloppy form. In particular, it is preferable to make the length of the expansion chamber longer than the injection passage.

Reference form 4
As shown in FIGS. 5 (a) and 5 (b), the aerosol product injection member 35 of the reference form 4 has an injection passage 37 formed above the stem mounting portion 36, and an upper portion of the injection passage 37. An expansion chamber 38 is provided on the side of the expansion chamber 38, and a front end opening of the expansion chamber 38 is a discharge hole 39. As shown in FIG. 5B, the expansion chamber 38 has a cross-sectional area that increases from the injection passage 37 side to the discharge hole 39 so that the cross-sectional area increases, and is larger than the cross-sectional area of the injection passage 37. In this reference embodiment, since the volume of the expansion chamber 38 is increased by widening the opening, the liquefied gas is easily vaporized in the expansion chamber 38 without providing a collision member, and can be discharged in a sloppy form.

Reference form 5
As shown in FIG. 6, the aerosol product injection member 40 of the reference form 5 includes a mounting portion 42 for mounting on an aerosol container separately from the stem mounting portion 41, and a nozzle constituting the expansion chamber 43. 44 faces upward. Further expansion chamber 43 is larger cross-sectional area in the vicinity discharge hole 45, tends liquefied gas is vaporized by increasing the cross-sectional area stepwise, the easier becomes (this reference embodiment discharged into sleet shape, 2 Exemplified when the cross-sectional area increases in stages). Moreover, since this reference form 5 can use an aerosol product in an inverted state, it can be directly applied to, for example, an ankle, instep, between toes, fingers, calves, knees and the like.

  EXAMPLES Hereinafter, although an Example demonstrates this invention more concretely, this invention is not limited to these.

The evaluation method is shown below.
<State of discharged material>
After holding the aerosol product in a constant temperature water bath at 25 ° C. for 1 hour, the state of the discharged product when 0.5 g of the aerosol composition was discharged to the palm was observed.
○: Foamed small and partly frozen.
Δ: Foaming is slightly large, but a part of the icing is frozen.
X1: Complete freezing.
X2: It becomes liquid after greatly foaming.
<Usage>
After holding the aerosol product in a constant temperature water bath at 25 ° C. for 1 hour, 0.5 g of the aerosol composition was discharged onto the palm, and the state when the discharged material was crushed with a fingertip was evaluated according to the following criteria.
○: A crisp feel was obtained.
X1: It is hard and has no sharpness.
X2: It is liquid and has no sharpness.
<Adhesiveness>
After holding the aerosol product in a constant temperature water bath at 25 ° C. for 1 hour, 0.5 g of the aerosol composition was discharged to the arm from a distance of 3 cm, and the adhesion to the skin was observed.
○: Almost adheres and does not scatter.
Δ: adheres but flows down in a short time.
X: There is much scattering.

Example 1
The following aqueous stock solution was prepared, and 20 g of the aqueous stock solution was filled in an aluminum pressure vessel. Filled with 80 g of liquefied petroleum gas by undercup filling, an aerosol valve was crimped on the opening of the pressure vessel. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied petroleum gas to produce an aerosol composition. The injection member shown in FIG. 1 was used. The results are shown in Table 1.

<Aqueous stock solution>
Xanthan gum 0.5
Dipropylene glycol 5.0
Methylparaben 0.1
POE (20) POP (8) Cetyl ether (* 1) 1.0
Purified water 92.4
Talc 1.0
Total 100.0 (wt%)

<Aerosol composition>
Aqueous concentrate / liquefied petroleum gas (* 2) = 20/80 (weight ratio)
* 1: NIKKOL PBC-44 (trade name), HLB 12.5, manufactured by Nikko Chemicals Co., Ltd. * 2: Mixture of isobutane and normal butane, vapor pressure at 20 ° C is 0.15 (MPa)

Example 2
An aerosol composition was produced in the same manner as in Example 1 except that locust bean gum was used instead of xanthan gum. The results are shown in Table 1.

Example 3
An aerosol composition was produced in the same manner as in Example 1 except that hydroxyethyl cellulose was used instead of xanthan gum. The results are shown in Table 1.

Example 4
An aerosol composition was produced in the same manner as in Example 1 except that sodium alginate was used instead of xanthan gum. The results are shown in Table 1.

Example 5
An aerosol composition was produced in the same manner as in Example 1 except that gelatin was used instead of xanthan gum. The results are shown in Table 1.

Example 6
An aerosol composition was produced in the same manner as in Example 1 except that a mixture of two types of natural gums (* 3) was used instead of xanthan gum. The results are shown in Table 1.
* 3: HR-H039 (trade name), manufactured by Nitta Gelatin Co., Ltd.

Example 7
The following aqueous stock solution was prepared, and 30 g of the aqueous stock solution was filled in an aluminum pressure vessel. 70 g of liquefied petroleum gas was filled by undercup filling, and an aerosol valve was crimped on the opening of the pressure vessel. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied petroleum gas to produce an aerosol composition. The injection member shown in FIG. 1 was used. The results are shown in Table 1.

<Aqueous stock solution>
Xanthan gum 0.5
Calcium lactate 0.5% aqueous solution 8.0
Dipropylene glycol 5.0
Methylparaben 0.1
POE (20) POP (8) Cetyl ether (* 2) 1.0
Purified water 84.4
Talc 1.0
Total 100.0 (wt%)

Example 8
An aerosol composition was produced in the same manner as in Example 7 except that a mixture (* 3) of two kinds of natural gums was used instead of xanthan gum. The results are shown in Table 1.

Example 9
An aerosol composition was produced in the same manner as in Example 1 except that 30 g of the aqueous stock solution and 70 g of liquefied petroleum gas were charged. The results are shown in Table 1.

Example 10
An aerosol composition was produced in the same manner as in Example 4 except that 30 g of aqueous stock solution and 70 g of liquefied petroleum gas were charged. The results are shown in Table 1.

Example 11
An aerosol composition was produced in the same manner as in Example 6 except that 30 g of the aqueous stock solution and 70 g of liquefied petroleum gas were charged. The results are shown in Table 1.

Example 12
An aerosol composition was produced in the same manner as in Example 1 except that concentrated glycerin was used instead of dipropylene glycol. The results are shown in Table 1.

Example 13
An aerosol composition was produced in the same manner as in Example 3 except that concentrated glycerin was used instead of dipropylene glycol. The results are shown in Table 1.

Example 14
An aerosol composition was produced in the same manner as in Example 4 except that concentrated glycerin was used instead of dipropylene glycol. The results are shown in Table 1.

Example 15
An aerosol composition was produced in the same manner as in Example 1 except that 95% ethanol was used instead of dipropylene glycol. The results are shown in Table 1.

Example 16
An aerosol composition was produced in the same manner as in Example 3 except that 95% ethanol was used instead of dipropylene glycol. The results are shown in Table 1.

Example 17
An aerosol composition was produced in the same manner as in Example 4 except that 95% ethanol was used instead of dipropylene glycol. The results are shown in Table 1.

Example 18
The following aqueous stock solution was prepared, and 20 g of the aqueous stock solution was filled in an aluminum pressure vessel. Filled with 80 g of liquefied petroleum gas by undercup filling, an aerosol valve was crimped on the opening of the pressure vessel. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied petroleum gas to produce an aerosol composition. The injection member shown in FIG. 1 was used. The results are shown in Table 1.

<Aqueous stock solution>
Hydroxyethyl cellulose 0.5
95% ethanol 20.0
Methylparaben 0.1
POE (20) POP (8) Cetyl ether (* 2) 1.0
Purified water 77.4
Talc 1.0
Total 100.0 (wt%)

Example 19
An aerosol composition was produced in the same manner as in Example 18 except that 95% ethanol was changed to 30.0% by weight and purified water was changed to 67.4% by weight. The results are shown in Table 1.

Comparative Example 1
An aerosol composition was produced in the same manner as in Example 1 except that 60 g of the aqueous stock solution and 40 g of liquefied petroleum gas were charged. The results are shown in Table 1.
<Aerosol composition>
Aqueous concentrate / liquefied petroleum gas (* 2) = 60/40 (weight ratio)

Comparative Example 2
An aerosol composition was produced in the same manner as in Comparative Example 1 except that locust bean gum was used instead of xanthan gum. The results are shown in Table 1.

Comparative Example 3
An aerosol composition was produced in the same manner as in Comparative Example 1 except that hydroxyethyl cellulose was used instead of xanthan gum. The results are shown in Table 1.

Comparative Example 4
An aerosol composition was produced in the same manner as in Comparative Example 1 except that sodium alginate was used instead of xanthan gum. The results are shown in Table 1.

Comparative Example 5
An aerosol composition was produced in the same manner as in Comparative Example 1 except that gelatin was used instead of xanthan gum. The results are shown in Table 1.

Comparative Example 6
An aerosol composition was produced in the same manner as in Comparative Example 1 except that a mixture (* 3) of two kinds of natural gums was used instead of xanthan gum. The results are shown in Table 1.

Comparative Example 7
An aerosol composition was produced in the same manner as in Example 1 except that 5 g of the aqueous stock solution and 95 g of liquefied petroleum gas were charged. The results are shown in Table 1.
<Aerosol composition>
Aqueous concentrate / liquefied petroleum gas (* 2) = 5/95 (weight ratio)

Comparative Example 8
An aerosol composition was produced in the same manner as in Comparative Example 7, except that locust bean gum was used instead of xanthan gum. The results are shown in Table 1.

Comparative Example 9
An aerosol composition was produced in the same manner as in Comparative Example 7, except that hydroxyethyl cellulose was used instead of xanthan gum. The results are shown in Table 1.

Comparative Example 10
An aerosol composition was produced in the same manner as in Comparative Example 7, except that sodium alginate was used instead of xanthan gum. The results are shown in Table 1.

Comparative Example 11
An aerosol composition was produced in the same manner as in Comparative Example 7, except that gelatin was used instead of xanthan gum. The results are shown in Table 1.

Comparative Example 12
An aerosol composition was produced in the same manner as in Comparative Example 7, except that a mixture of two types of natural gums (* 3) was used instead of xanthan gum. The results are shown in Table 1.

Comparative Examples 13-18
Aerosol compositions were produced in the same manner as in Examples 1 to 6, except that the injection member of FIG. 7 was used instead of the injection member of FIG. The results are shown in Table 1.

  As shown in Table 1, among the comparative examples in which the mixing ratio of the aqueous stock solution and the liquefied gas in the aerosol composition was out of the range of 50/50 to 10/90 (weight ratio), the liquefied gas in the aerosol composition When the blending ratio was small (see Comparative Examples 1 to 6), the foam was greatly foamed, the sleet was not formed, and the liquid was in a liquid state, so that no sharp feeling was obtained. Moreover, when these were discharged to the arm, they adhered, but flowed down in a short time, and the adhesion was poor. Moreover, when the compounding ratio of the liquefied gas in the aerosol composition was large (see Comparative Examples 7 to 12), the discharged material was completely frozen and hard, and no sharpness was obtained. Moreover, these were too strong and were easy to scatter, and their adhesiveness was bad.

  When an injection member without an expansion chamber was used (see Comparative Examples 13 to 18), the discharged material was completely frozen and hard, and no sharpness was obtained. Moreover, these were too strong and were easy to scatter, and their adhesiveness was bad.

Next, a prescription example is shown.
1. Anti-inflammatory analgesic The following aqueous stock solution was prepared, and 25 g of the aqueous stock solution was filled in a pressure vessel made of aluminum. 75 g of liquefied petroleum gas was filled by undercup filling, and an aerosol valve was crimped on the opening of the pressure vessel. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied petroleum gas to produce an aerosol composition. The injection member shown in FIG. 1 was used.
<Aqueous stock solution>
Indomethacin 1.0
l-Menthol 0.5
Dipropylene glycol 5.0
POE (20) POP (8) Cetyl ether (* 1) 1.0
Hydroxyethyl cellulose 0.5
Pectin 1.5
Purified water 89.5
Talc 1.0
Total 100.0 (wt%)
<Aerosol composition>
Aqueous concentrate / liquefied petroleum gas (* 2) = 25/75 (weight ratio)

2. Itching Prevention An aerosol composition was produced in the same manner as in Formulation Example 1 except that the following aqueous stock solution was used.
<Aqueous stock solution>
Tocopherol acetate 0.5
Lidocaine 2.0
Diphenylhydramine 1.0
Dipotassium glycyrrhizinate 0.5
POE (60) hydrogenated castor oil (* 4) 1.0
95% ethanol 5.0
Xanthan gum 0.5
Purified water 88.5
Talc 1.0
Total 100.0 (wt%)
<Aerosol composition>
Aqueous concentrate / liquefied petroleum gas (* 2) = 25/75 (weight ratio)
* 4: HCO-60 (trade name), HLB14.0, manufactured by Nikko Chemicals Co., Ltd.

3. Hot water stop The following aqueous stock solution was prepared, and 30 g of the aqueous stock solution was filled in an aluminum pressure vessel. 70 g of liquefied petroleum gas was filled by undercup filling, and an aerosol valve was crimped on the opening of the pressure vessel. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied petroleum gas to produce an aerosol composition. The injection member shown in FIG. 3 was used.
<Aqueous stock solution>
Dipotassium glycyrrhizinate 0.05
l-Menthol 0.05
Aloe extract 0.05
POE (20) POP (8) Cetyl ether (* 1) 1.0
95% ethanol 5.0
Mixture of two natural gums (* 3) 0.5
Calcium lactate 0.5% aqueous solution 8.0
Purified water 84.35
Talc 1.0
Total 100.0 (wt%)
<Aerosol composition>
Aqueous concentrate / liquefied petroleum gas (* 2) = 30/70 (weight ratio)

4). Antiperspirant The following aqueous stock solution was prepared, and 20 g of the aqueous stock solution was filled in an aluminum pressure resistant container. Filled with 80 g of liquefied petroleum gas by undercup filling, an aerosol valve was crimped on the opening of the pressure vessel. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied petroleum gas to produce an aerosol composition. The injection member shown in FIG. 6 was used.
<Aqueous stock solution>
Chlorhydroxyaluminum 3.0
Glyceryl tri-2-ethylhexanoate 1.0
POE (20) POP (8) Cetyl ether (* 1) 1.0
95% ethanol 10.0
Gelatin 0.5
Purified water 83.5
Ethylene / acrylic acid copolymer 0.5
Talc 0.5
Total 100.0 (wt%)
<Aerosol composition>
Aqueous concentrate / liquefied petroleum gas (* 2) = 20/80 (weight ratio)

5. Hair restorer The following aqueous stock solution was prepared, and 35 g of the aqueous stock solution was filled in an aluminum pressure-resistant container. 65 g of liquefied petroleum gas was filled by undercup filling, and an aerosol valve was crimped on the opening of the pressure vessel. Next, the aerosol container was shaken up and down to emulsify the aqueous stock solution and the liquefied petroleum gas to produce an aerosol composition. The injection member shown in FIG. 1 was used.
<Aqueous stock solution>
Pepper tincture 0.05
Dl-α-Acetic acid tocopherol acetate 0.05
Resorcinol 0.1
l-Menthol 0.1
1,3-butylene glycol 5.0
POE (20) POP (8) Cetyl ether (* 1) 1.0
Sodium alginate 0.5
Purified water 92.7
Talc 0.5
Total 100.0 (wt%)
<Aerosol composition>
Aqueous concentrate / liquefied petroleum gas (* 2) = 35/65 (weight ratio)

  As described above, according to the aerosol product and the discharge method of the present invention, when it is discharged onto the skin or the like, it foams small and becomes a soft sleet partly frozen, and an excellent cooling effect is obtained. When applied, it provides a crisp and comfortable feeling of use. Furthermore, it prevents flow from falling off the spray surface and prevents heat from being transmitted directly from the skin to the sleet, so this state is easily maintained and the cooling effect is sustained. Furthermore, there is no scattering at the time of discharge, and it can be applied effectively.

It is a fragmentary sectional view of the aerosol product in one embodiment (Embodiment 1) of the aerosol product of this invention. It is the front view of the injection member of FIG. 1, and the bottom view of a collision member. It is side surface sectional drawing of the injection member in one embodiment (Embodiment 2) of the aerosol product of this invention. It is side surface sectional drawing of the injection member in the one reference aspect ( reference form 3) of the aerosol product of this invention. It is side surface sectional drawing and upper surface sectional drawing of the injection member in one reference aspect ( reference form 4) of the aerosol product of this invention. It is side surface sectional drawing of the injection member in the one reference aspect ( reference form 5) of the aerosol product of this invention. It is side surface sectional drawing of the injection member of the conventional aerosol product.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Aerosol product 2 Container body 3 Aerosol valve 4 Aerosol container 5 Stem 6, 21, 32, 35, 40, 48 Injection member 7 Aerosol composition 8, 22, 36, 41 Stem mounting part 9, 23, 37, 46 Injection passage DESCRIPTION OF SYMBOLS 10 Opening part 11, 24 Injection member main body 12 Tube part 13, 25 Collision member 14, 29 Cover part 15 Shaft part 16 Groove | groove 17, 31, 39, 45, 47 Discharge hole 18, 28, 34, 38, 43 Expansion chamber 19 , 30 Collision part 20 Concave part 26 Upper injection passage 27 Side injection passage 42 Mounting part 33, 44 Nozzle

Claims (9)

An aerosol composition comprising an aqueous stock solution and a liquefied gas, wherein the aqueous stock solution and the liquefied gas are emulsified, is an aerosol product filled in an aerosol container equipped with an injection member,
The aqueous stock solution contains a water-soluble polymer and a surfactant,
The mixing ratio of the aqueous stock solution and the liquefied gas in the aerosol composition is 50/50 to 10/90 (weight ratio),
The injection member includes a mounting portion to be attached to a stem of the aerosol container, an injection passage, and a discharge hole;
Between the injection passage and the discharge hole,
Collision portion aerosol composition which has passed through the spray passages collide and Ri Na in the expansion chamber is provided with a larger cross-sectional area than the cross-sectional area of <br/> injection duct,
At the time of discharge, after the aerosol composition that has passed through the injection passage collides with the collision portion and the momentum of injection is suppressed, at least a part of the liquefied gas in the aerosol composition is vaporized in the expansion chamber, aerosol products Ru discharged from the discharge hole. The aerosol product according to claim 1, wherein the water-soluble polymer is a polysaccharide, cellulose, alginate, or a mixture thereof. The aerosol product according to claim 1 or 2, wherein 3 to 30% by weight of alcohol is contained in the aqueous stock solution. 2. The injection member includes an injection member main body having an attachment portion, an injection passage, and an opening, and a collision member attached to the injection passage, and the expansion chamber is a space between the opening and the collision member. The aerosol product according to any one of -3. The discharge hole, aerosol product according to claim 4, wherein said a hole provided in a gap between the injection member body and said collision member. It consists of an aqueous stock solution and a liquefied gas.
The aqueous stock solution contains a water-soluble polymer and a surfactant, and the mixing ratio of the aqueous stock solution and the liquefied gas in the aerosol composition is 50/50 to 10/90 (weight ratio),
An aerosol composition obtained by emulsifying the aqueous stock solution and the liquefied gas is a method for discharging an aerosol product filled in an aerosol container,
(1) at the time of discharge, the aerosol composition passes through an injection passage of an injection member attached to a stem of the aerosol container ;
(2) the aerosol composition having passed through the injection passage collides with a collision portion provided in the injection member, and the step of suppressing the momentum of injection;
(3) At least one of the liquefied gas in the aerosol composition in the expansion chamber in which the aerosol composition colliding with the collision portion has a cross-sectional area larger than the cross-sectional area of the injection passage provided between the injection passage and the discharge hole. The process of vaporizing the part ,
( 4 ) A method for discharging an aerosol product comprising the step of discharging an aerosol composition cooled by vaporization of a liquefied gas from the discharge hole. The method for discharging an aerosol product according to claim 6 , wherein the water-soluble polymer is a polysaccharide, cellulose, alginate, or a mixture thereof. The method for discharging an aerosol product according to claim 6 or 7 , wherein 3 to 30% by weight of alcohol is contained in the aqueous stock solution. The method for discharging an aerosol product according to any one of claims 6 to 8, wherein the discharge hole is an annular hole provided in a gap between the injection member and the collision portion.

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