JP2022146391A - Foam discharge nozzle, and foam discharge product - Google Patents

Abstract

To provide a discharge product capable of obtaining a finely foamy discharged material by discharging a foamable composition using compressed gas, without using a complicated structure.SOLUTION: A foam discharge nozzle used by being attached to a discharge container filled with a foamable composition composed of compressed gas and a stock solution containing a foaming agent comprises a body part, and a nozzle part provided with a discharge opening for discharging the foamable composition. The body part is provided with a first passage. The nozzle part is provided with a second passage communicating with the first passage, the nozzle part comprising a throttle part and a taper part. A diameter of the second passage at the throttle part is smaller than a diameter of the first passage. A diameter of the second passage at the taper part is enlarged in a taper shape from the diameter of the second passage at the throttle part so as to be the second passage at the discharge opening.SELECTED DRAWING: Figure 1

Description

The present invention relates to foam dispensing nozzles and foam dispensing products. More particularly, the present invention relates to a foaming nozzle and a foaming product capable of ejecting fine bubbles with a compressed gas with a simpler structure than conventional ones.

Conventionally, discharge products have been developed in which a stock solution is foamed by liquefied gas such as liquefied petroleum gas and discharged. In such a discharge product, a liquefied gas and a stock solution are mixed in the container, and when discharged to the outside, the liquefied gas is vaporized and expands to obtain a fine foam discharge. be able to. By the way, there are attempts to reduce the amount of liquefied gas used due to concerns about environmental problems in recent years.

However, when a compressed gas is used instead of the liquefied gas, it is difficult to obtain a fine foamy discharge because the compressed gas is hardly soluble in the stock solution. Therefore, Patent Literature 1 discloses an aerosol injection nozzle that mixes contents with air. This nozzle is provided with a collision wall for mixing the content and air and a retention chamber for retaining the foamed content. The contents introduced into the nozzle strongly collide with the collision wall in the retention chamber, rebound, and violently flow within the retention chamber. This flow causes the contents and air to mix, resulting in foaming. In addition, Patent Document 2 discloses an attachment for foam generation in which an external type cylindrical portion attached to a container discharge port is provided with double meshes on the upstream side and the downstream side, and the distance between the meshes can be changed. It is This attachment for foam generation can change the distance between the meshes, so that the foam state of the content to be released can be switched while the attachment for foam generation is attached.

JP-A-2002-66388 Japanese Patent Application Laid-Open No. 2011-31889

However, the inventions described in Patent Documents 1 and 2 have complicated structures and are difficult to manufacture.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and it is an object of the present invention to dispense a foaming composition using a compressed gas to obtain a finely foamed discharge without using a complicated structure. It is an object of the present invention to provide a discharge product capable of

The present invention for solving the above problems mainly includes the following configurations.

(1) A nozzle used by being attached to a discharge container filled with a foaming composition composed of a stock solution containing a foaming agent and a compressed gas, and having a main body and a discharge hole through which the foaming composition is discharged. wherein the main body portion is formed with a first passage through which the foamable composition taken in from the discharge container passes toward the nozzle portion, and the nozzle portion is formed with the first passageway a second passage communicating with the tapered portion and a tapered portion; the diameter of the second passage in the narrowed portion is smaller than the diameter of the first passage in the tapered portion; A foaming discharge nozzle, wherein the diameter of the second passage is tapered from the diameter of the second passage in the narrowed portion to the diameter of the second passage in the discharge hole.

According to such a configuration, the foaming discharge nozzle has a simple configuration, but the foaming composition drawn out from the first passage is compressed in the constricted portion due to increased flow resistance. The gas can be atomized and finely dispersed in the foamable composition. In addition, the foaming discharge nozzle can expand the foamable composition into a finely foamed discharge by gradually releasing the finely dispersed compressed gas from the compressed state at the tapered portion.

(2) The foaming discharge nozzle according to (1), wherein the diameter of the second passage in the constricted portion is 0.2 to 3 mm.

According to such a configuration, the foaming discharge nozzle can more easily compress the foamable composition drawn out from the first passage in the constricted portion, and can make the compressed gas more fine, thereby reducing the foamable composition. Compressed gas can be more finely dispersed therein. As a result, the ejected foaming composition tends to be more finely foamed.

(3) The foaming discharge nozzle according to (1) or (2), wherein the ratio of the diameter of the second passage to the diameter of the first passage in the constricted portion is 0.1 to 0.8.

According to such a configuration, the foaming discharge nozzle more easily compresses the foaming composition drawn out from the first passage in the constricted portion, easily makes the compressed gas finer, and finely disperses it in the foaming composition. Cheap. As a result, the ejected foaming composition tends to be more finely foamed.

(4) The foaming ejection nozzle according to any one of (1) to (3), wherein the nozzle portion has a cylindrical portion between the tapered portion and the ejection hole.

According to such a configuration, the foaming ejection nozzle can easily adjust the momentum of the ejected material.

(5) The foaming ejection nozzle according to any one of (1) to (4), wherein the nozzle portion has a length of 20 to 100 mm.

According to such a configuration, the foaming discharge nozzle can easily adjust the foaming of the foamable composition.

(6) A foaming composition comprising a stock solution containing a foaming agent and a compressed gas, a discharge container filled with the foaming composition, and the foaming discharge nozzle according to any one of (1) to (5). A foaming extruded product consisting of:

According to such a configuration, the foaming discharge product is the foaming composition obtained by mixing the undiluted liquid and the compressed gas in the discharge container, and the foaming composition is led out from the first passage at the constricted portion of the foaming discharge nozzle. The material is more compressible and the compressed gas can be finely divided and finely dispersed in the foamable composition. In addition, the foaming discharge nozzle can expand the foamable composition into a finely foamed discharge by gradually releasing the finely dispersed compressed gas from the compressed state at the tapered portion. As a result, the foaming discharge product is easy to obtain a fine foam-like discharge with a simple structure.

(7) The discharge container includes a container body and a valve attached to the container body and having a discharge passage for discharging the foamable composition to the outside, wherein the valve comprises a housing, a tube member attached to the housing for taking the foamable composition into the housing, wherein the tube member opens to a gas phase portion of the foamable composition filled in the container body; a gas phase introduction hole for introducing the gas phase portion; a liquid phase introduction hole that is open to the liquid phase portion of the foamable composition filled in the container body and for introducing the liquid phase portion; and comprising a mixing chamber for mixing said vapor phase portion and said liquid phase portion of said introduced foamable composition.

According to such a configuration, when the valve is opened by performing the discharge operation, the pressure in the container body causes the gas of the foamable composition introduced from the gas phase introduction hole in the mixing chamber of the tube member. The phase portion and the liquid phase portion of the foamable composition introduced from the liquid phase introduction hole are automatically mixed. The compressed gas, which mainly constitutes the gas phase portion, and the undiluted solution, which mainly constitutes the liquid phase portion, are mixed with flow path resistance when passing through the mixing chamber, and flow outward while bubbling. As a result, the ejected foaming composition is likely to be finely foamed.

ADVANTAGE OF THE INVENTION According to the present invention, although a foaming composition is discharged using a compressed gas, a foaming discharge nozzle capable of obtaining a finely foamed discharge without providing a complicated foaming passage; Effervescent products can be provided.

FIG. 1 is a schematic cross-sectional view of a discharge container according to one embodiment (first embodiment) of the present invention. FIG. 2 is a schematic cross-sectional view for explaining a foaming discharge nozzle according to one embodiment (first embodiment) of the present invention. FIG. 3 is a schematic cross-sectional view for explaining a foaming discharge nozzle according to one embodiment (second embodiment) of the present invention. FIG. 4 is a schematic cross-sectional view for explaining a foaming discharge nozzle without a tapered portion. FIG. 5 is a schematic cross-sectional view for explaining a foaming discharge nozzle having no constricted portion.

[First Embodiment]
A foaming and discharging product according to one embodiment (first embodiment) of the present invention comprises a foaming composition comprising a stock solution containing a foaming agent and a compressed gas, a discharge container filled with the foaming composition, and a foaming and discharging product. and a nozzle. A foaming nozzle is used by being attached to a dispensing container, and includes a body portion and a nozzle portion formed with a ejection hole through which a foaming composition is ejected. The body portion is formed with a first passage through which the foamable composition taken from the discharge container passes toward the nozzle portion. The nozzle portion has a second passage that communicates with the first passage, and has a constricted portion and a tapered portion. The diameter of the second passage in the constricted portion is smaller than the diameter of the first passage. The diameter of the second passage in the tapered portion is tapered from the diameter of the second passage in the narrowed portion to the diameter of the second passage in the discharge hole. Each of these will be described below.

<Effervescent composition>
The foaming composition is the content to be filled in the container body, and consists of a stock solution containing a foaming agent and a compressed gas.

(Undiluted solution)
The undiluted solution is mixed with compressed gas in the mixing chamber of the tube member to foam, or is foamed and foam-stabilized in the passage in the nozzle portion of the foaming discharge nozzle, and is discharged to the outside in the form of foam. The concentrate contains a foaming agent. The foaming agent is used for the purpose of foaming the undiluted solution in the mixing chamber or nozzle to form fine foam.

The foaming agent is not particularly limited. For example, foaming agents include surfactants such as nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, silicone surfactants, and natural surfactants. is an active agent.

Nonionic surfactants are not particularly limited. By way of example, nonionic surfactants include polyoxyethylene polyoxypropylene alkyl ethers such as POE-POP cetyl ether, POE-POP decyltetradecyl ether; POE cetyl ether, POE stearyl ether, POE oleyl ether, POE Ether types such as polyoxyethylene alkyl ethers such as lauryl ether, POE behenyl ether, POE octyldodecyl ether, POE isocetyl ether, POE isostearyl ether; polyethylene glycol fatty acid esters such as polyethylene glycol monostearate; POE hydrogenated castor oil, etc. polyoxyethylene hydrogenated castor oil; polyoxyethylene glycerin fatty acid esters such as POE glyceryl monostearate and POE glyceryl monooleate; polyoxyethylene alkyl ether fatty acid esters such as POE cetyl ether stearate and POE lauryl ether isostearate; Polyoxyethylene sorbitan fatty acid esters such as oil fatty acid POE sorbitan, POE sorbitan monostearate, POE sorbitan monooleate, and POE sorbitan triisostearate; Oxyethylene sorbitol fatty acid ester; hexaglyceryl monolaurate, hexaglyceryl monomyristate, pentaglyceryl monolaurate, pentaglyceryl monomyristate, pentaglyceryl monooleate, pentaglyceryl monostearate, decaglyceryl monolaurate, decaglyceryl monomyristate, polyglycerin fatty acid esters such as decaglyceryl monostearate, decaglyceryl monoisostearate, decaglyceryl monooleate, and decaglyceryl monolinoleate; and ester types such as polyoxyethylene lanolin alcohol such as POE lanolin alcohol.

Anionic surfactants are not particularly limited. By way of example, anionic surfactants degrade fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, behenic acid, oleic acid, linoleic acid, linoleic acid, sodium hydroxide, Fatty acid soaps neutralized with alkali such as potassium, monoethanolamine, diethanolamine, triethanolamine, trimethylamine, triethylamine; Alkyl phosphates such as potassium lauryl phosphate and sodium lauryl phosphate; Ethylene alkyl ether phosphate; Alkyl sulfates such as ammonium lauryl sulfate, potassium lauryl sulfate, sodium lauryl sulfate, triethanolamine lauryl sulfate, and sodium cetyl sulfate; POE sodium lauryl ether sulfate, POE lauryl ether sulfate triethanolamine, POE alkyl ether Polyoxyethylene alkyl ether sulfates such as sodium sulfate, POE alkyl ether sulfate triethanolamine; acid salts; sodium laurylsulfoacetate, sodium tetradecenesulfonate, dioctyl sodium sulfosuccinate, sodium dialkylsulfosuccinate, sodium alkylnaphthalenesulfonate, sodium alkyldiphenyletherdisulfonate, sodium alkanesulfonate, dodecylbenzenesulfonic acid, dodecylbenzenesulfonic acid and sulfonates such as sodium. In addition, triethanolamine N-cocoate acyl-L-glutamate, potassium N-cocoate acyl-L-glutamate, sodium N-cocoate acyl-L-glutamate, triethanolamine N-lauroyl-L-glutamate , N-acyl such as potassium N-lauroyl-L-glutamate, sodium N-lauroyl-L-glutamate, potassium N-myristoyl-L-glutamate, sodium N-myristoyl-L-glutamate, sodium N-stearoyl-L-glutamate Glutamate; N-acylglycine salts such as potassium N-cocoate acylglycine and sodium N-cocoate acylglycine; N-acylalanine salts such as N-cocoate acyl-DL-alanine triethanolamine; lauroyl Examples include amino acid-type surfactants such as acylalanine salts such as sodium methylalanine.

Cationic surfactants are not particularly limited. By way of example, cationic surfactants are alkylammonium salts such as stearyltrimethylammonium chloride, alkylbenzylammonium salts, and the like.

The amphoteric surfactant is not particularly limited. By way of example, amphoteric surfactants include lauryldimethylaminoacetate betaine (laurylbetaine), stearylbetaine, lauramidopropylbetaine, laurylhydroxysulfobetaine, stearyldimethylaminoacetate betaine, dodecylaminomethyldimethylsulfopropylbetaine, octadecyl Alkylbetaines such as aminomethyldimethylsulfopropylbetaine; betaine types such as cocamidopropyl betaine, cocamidopropyldimethylaminoacetate betaine (cocamidopropyl betaine), fatty acid amidopropyl betaine such as cocamidopropylhydroxysultaine; Alkyl imidazole type such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine; amino acid type such as sodium lauroyl glutamate, potassium lauroyl glutamate, lauroyl methyl-β-alanine; lauryl dimethylamine N-oxide, oleyl amine oxide types such as dimethylamine N-oxide;

The silicone-based surfactant is not particularly limited. Examples of silicone-based surfactants include polyoxyethylene/methylpolysiloxane copolymers, polyoxypropylene/methylpolysiloxane copolymers, poly(oxyethylene/oxypropylene)/methylpolysiloxane copolymers, and the like. is.

Natural surfactants are not particularly limited. Examples of natural surfactants include sodium surfactin, cyclodextrin, and hydrogenated enzyme soybean lecithin.

The content of the foaming agent is not particularly limited. For example, the content of the foaming agent is preferably 1% by mass or more, more preferably 3% by mass or more, in the stock solution. Moreover, the content of the foaming agent is preferably 30% by mass or less, more preferably 25% by mass or less, in the undiluted solution. When the content of the foaming agent is within the above range, the stock solution has excellent foaming power and easily forms fine foam. In addition, the resulting discharge is less likely to remain on the application site such as the skin, less likely to cause stickiness, etc., and has excellent usability.

A solvent is suitably blended into the stock solution. A solvent is not specifically limited. Examples of solvents include water and alcohol. A combination of water and alcohol may be used as the solvent.

Water is not particularly limited. For example, water is purified water, ion-exchanged water, deep sea water, and the like.

When water is contained, the content of water is not particularly limited. For example, the content of water in the undiluted solution is preferably 40% by mass or more, more preferably 50% by mass or more. Also, the content of water is preferably 95% by mass or less, more preferably 90% by mass or less, in the stock solution. When the water content is within the above range, the resulting discharge is likely to foam. Also, the foamable composition is easy to incorporate other components.

Alcohol is not particularly limited. To give an example, alcohols are monohydric alcohols, polyhydric alcohols, and the like.

The monohydric alcohol is used not only for the purpose of improving the feeling of use, but also for the purpose of adjusting the foaming state of the discharged matter by serving as a solvent for dissolving active ingredients that are difficult to dissolve in the solvent.

Monohydric alcohol is not particularly limited. For example, monohydric alcohols are monohydric alcohols having 2 to 3 carbon atoms such as ethanol and isopropanol.

The polyhydric alcohol is used for the purpose of adjusting the foaming state of the ejected matter.

Polyhydric alcohol is not particularly limited. By way of example, polyhydric alcohols are dihydric to tetrahydric alcohols such as propylene glycol, 1,3-butylene glycol, hexylene glycol, glycerin, dipropylene glycol, and diglycerin.

When alcohol is contained, the content of alcohol is not particularly limited. For example, the content of alcohol is preferably 1% by mass or more, more preferably 3% by mass or more, in the stock solution. Also, the content of alcohol is preferably 30% by mass or less, more preferably 25% by mass or less, in the stock solution. When the content of the alcohol is within the above range, the foaming composition can easily obtain the effect of blending the alcohol and has excellent foaming properties.

The stock solution of the present embodiment may contain active ingredients, water-soluble polymers, monosaccharides, oil, powder, etc., depending on the application, purpose, and the like.

Active ingredients are not particularly limited. To give an example, active ingredients include various fragrances such as natural fragrances and synthetic fragrances; cooling agents such as l-menthol, camphor, and peppermint oil; retinol, retinol acetate, retinol palmitate, calcium pantothenate, and magnesium ascorbate phosphate. , sodium ascorbate, dl-α-tocopherol, tocopherol acetate, tocopherol, tocopherol nicotinate, dibenzoylthiamine, riboflavin and mixtures thereof; vitamins such as ascorbic acid, α-tocopherol, dibutylhydroxytoluene, butylhydroxyanisole Antioxidants; amino acids such as glycine, alanine, leucine, serine, tryptophan, cysteine, methionine, aspartic acid, glutamic acid, arginine; collagen, hyaluronic acid, caroninic acid, sodium lactate, dl-pyrrolidone carboxylate, keratin, casein, Humectants such as lecithin and urea; Preservatives such as paraoxybenzoic acid esters and phenoxyethanol; Disinfectants such as sodium benzoate, potassium sorbate, benzalkonium chloride, benzethonium chloride, chlorhexidine chloride and parachlormetacresol; Royal jelly extract , peony extract, luffa extract, rose extract, lemon extract, aloe extract, calamus root extract, eucalyptus extract, sage extract, tea extract, seaweed extract, placenta extract, extracts such as silk extract; zinc oxide, allantoin hydroxyl aluminum, tannin astringents such as acid, citric acid, lactic acid; anti-inflammatory agents such as allantoin, glycyrrhetinic acid, dipotassium glycyrrhizinate, azulene; Deodorants such as benzyl propionate and green tea extract; Ultraviolet rays such as diethylaminohydroxybenzoyl hexyl benzoate, 2-ethylhexyl paramethoxycinnamate, ethylhexyl triazone, oxybenzone, hydroxybenzophenone sulfonic acid, sodium dihydroxybenzophenone sulfonate, and dihydroxybenzophenone Absorbing agents; UV scattering agents such as zinc oxide, titanium oxide and octyltrimethoxysilane-coated titanium oxide; and whitening agents such as arbutin and kojic acid.

When an active ingredient is contained, the content of the active ingredient is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, in the stock solution. Moreover, the content of the active ingredient is preferably 20% by mass or less, more preferably 15% by mass or less. When the content of the active ingredient is within the above range, the foamable composition can easily obtain the desired effect by blending the active ingredient.

The water-soluble polymer is used for the purpose of adjusting the foaming state of the ejected matter, such as increasing the retention of foam.

The water-soluble polymer is not particularly limited. For example, water-soluble polymers include hydroxyethyl cellulose dimethyl diallyl ammonium chloride (polyquaternium 4), dimethyl diacryl ammonium chloride/acrylamide copolymer (polyoctanium 7), chloride -O-[2-hydroxy-3- (Trimethylammonio)propyl]hydroxyethylcellulose (polyquaternium 10), dimethyldiallylammonium chloride/acrylic acid copolymer (polyquaternium 22), -O-[2-hydroxy-3-(lauryldimethylammonio)propyl]hydroxyethylcellulose chloride (polyoctanium 24), acrylamide/acrylic acid/dimethyldiallylammonium chloride copolymer (polyquaternium 39), 2-methacryloyloxyethylphosphorylcholine/butyl methacrylate copolymer liquid (polyquaternium 51), N,N-dimethylaminoethyl methacryl Diethyl Acid Sulfate/N,N-Dimethylacrylamide/Polyethylene Glycol Dimethacrylate (Polyquaternium 52), 2-Methacryloyloxyethyl Phosphorylcholine/Stearyl Methacrylate Copolymer (Polyquaternium 61), Methacryloyloxyethylene Phosphorylcholine, Butyl Methacrylate and Methacryl sodium acid (polyquaternium 65), polyvinylpyrrolidone/N,N-dimethylaminoethyl methacrylic acid copolymer diethylsulfate, polyvinylpyrrolidone/N,N-dimethylaminoethyl methacrylic acid copolymer dimethylsulfate, polyvinylpyrrolidone/N, Cationic polymers such as N-dimethylaminoethyl methacrylic acid copolymer hydrochloride and hydroxyethylcellulose hydroxypropyltrimethylammonium chloride ether; Cellulosic polysaccharides such as hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose and carboxymethylcellulose sodium; Carrageenan , xanthan gum, gum arabic, gum tragacanth, cationic guar gum, guar gum, gellan gum, locust bean gum; gelatin, dextran, sodium carboxymethyldextran, dextrin, pectin, starch, maize starch, wheat starch, sodium alginate, modified potato Starch, hyaluronic acid, sodium hyaluronate, polyvinyl alcohol, polyvinylpyrrolidone, and carboxyvinyl polymers. Among these, it is preferable to use a cationic polymer as the water-soluble polymer because the foaming property of the discharge is excellent.

When it contains a water-soluble polymer, the content of the water-soluble polymer is not particularly limited. For example, the content of the water-soluble polymer is preferably 0.001% by mass or more, more preferably 0.005% by mass or more, in the undiluted solution. Moreover, the content of the water-soluble polymer is preferably 5% by mass or less, more preferably 3% by mass or less, in the stock solution. When the content of the water-soluble polymer is within the above range, the effect of containing the water-soluble polymer in the foamable composition is likely to be obtained. In addition, the resulting discharge is less likely to remain on the application site such as the skin, less likely to cause stickiness, etc., and has excellent usability.

Monosaccharides are used for the purpose of adjusting the foaming state of the discharge, such as increasing foam retention.

Monosaccharides are not particularly limited. For example, monosaccharides include sugar alcohols such as erythritol, arabitol, galactitol, glucitol, maltitol, mannitol, sorbitol and xylitol; tetroses such as erythritol, D-erythrose and D-threose; -Pentoses such as arabinose, D-xylose, D-lyxose, L-lyxose, D-ribose, D-xylulose, L-xylulose, D-ribulose, L-ribulose; D-altrose, L-altrose, D -galactose, L-galactose, D-glucose, D-talose, D-mannose, L-sorbose, D-tagatose, D-psicose, D-fructose, hexoses such as D-mannose.

When monosaccharides are contained, the content of monosaccharides is not particularly limited. For example, the monosaccharide content is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, in the undiluted solution. In addition, the monosaccharide content is preferably 20% by mass or less, more preferably 15% by mass or less, in the stock solution. When the content of the monosaccharide is within the above range, the effect of containing the monosaccharide is likely to be obtained in the effervescent composition.

The oil is used for the purpose of adjusting the state of foaming.

The oil content is not particularly limited. Examples of oils include hydrocarbon oils such as liquid paraffin, squalene, squalane, and isoparaffin; diisopropyl adipate, isopropyl myristate, isopropyl palmitate, cetyl octanoate, octyldodecyl myristate, butyl stearate, and myristyl myristate. , decyl oleate, cetyl lactate, isocetyl stearate, cetostearyl alcohol, diisopropyl adipate, diisobutyl adipate, diisopropyl sebacate, diethyl sebacate, diethylhexyl sebacate, diethylhexyl succinate, diethoxyethyl succinate, malic acid Diisostearyl, bisethoxydiglycol cyclohexane 1,4-dicarboxylate, bisethoxydiglycol cyclohexanedicarboxylate, polyglyceryl eicosanedioate-tetradecanedioate, bisethoxydiglycol cyclohexanedicarboxylate, diethylpentanediol dineopentanoate, methyl dineopentanoate Ester oils such as pentanediol; methylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, methylcyclopolysiloxane, tetrahydrotetramethylcyclotetrasiloxane, octamethyltrisiloxane, decamethyltetra Silicone oils such as siloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, polyglycerol-modified silicone; higher alcohols such as lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol and lanolin alcohol; liquid fatty acids such as isostearic acid; oils such as avocado oil, macadamia nut oil, shea butter, olive oil and camellia oil; and waxes such as beeswax and lanolin wax.

When oil is contained, the content of oil is not particularly limited. For example, the content of oil is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, in the undiluted solution. In addition, the oil content is preferably 20% by mass or less, more preferably 15% by mass or less, in the undiluted solution. When the content of the oil is within the above range, the foaming composition is likely to obtain the effect of blending the oil.

The powder is used for the purpose of improving the feeling of use, such as improving slippage.

Powder is not particularly limited. By way of example, powders include talc, zinc oxide, titanium oxide, kaolin, mica, magnesium carbonate, calcium carbonate, zinc silicate, magnesium silicate, aluminum silicate, calcium silicate, silica, zeolite, ceramic powder, Charcoal powder, nylon powder, silk powder, urethane powder, silicone powder, polyethylene powder and the like.

When powder is contained, the content of powder is not particularly limited. For example, the powder content in the stock solution is preferably 0.1% by mass or more, more preferably 0.3% by mass or more. Also, the powder content is preferably 5% by mass or less, more preferably 3% by mass or less. When the content of the powder is within the above range, the foaming composition can easily obtain the effect of containing the powder. Also, the powder is less likely to accumulate in the mixing chamber.

Returning to the description of the stock solution as a whole, the content of the stock solution is not particularly limited. For example, the stock solution is preferably 90% by mass or more, more preferably 92% by mass or more, in the foamable composition. In addition, the stock solution is preferably 99.99% by mass or less, more preferably 99.98% by mass or less, in the foamable composition. When the content of the stock solution is within the above range, the foamable composition is easily mixed with the compressed gas in the mixing chamber, is easily foamed and stabilized in the nozzle, and fine bubbles are easily formed.

The method for preparing the stock solution is not particularly limited. As an example, the stock solution can be prepared by dissolving the foaming agent, active ingredient, etc. in the solvent.

(compressed gas)
The compressed gas pressurizes the undiluted solution filled in the discharge container and supplies the undiluted solution to the mixing chamber through the liquid phase introduction hole, and the compressed gas itself is also supplied to the mixing chamber through the gas phase introduction hole, thereby increasing the pressure in the mixing chamber. mixed with the stock solution. Also, the compressed gas is blended so that the volume of the liquid is gradually increased due to the pressure difference with the outside, and the liquid is foamed, and furthermore, the foam is foamed and stabilized in the nozzle portion to discharge fine foam to the outside.

Compressed gas is not particularly limited. Examples of the compressed gas include nitrogen gas, compressed air, carbon dioxide gas, nitrous oxide gas, oxygen gas, etc. Nitrogen gas and compressed air are preferred.

The content of compressed gas is not particularly limited. For example, the compressed gas is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, in the foamable composition. In addition, the compressed gas is preferably 10% by mass or less, more preferably 8% by mass or less, in the foamable composition. When the content of the compressed gas is within the above range, the foamable composition is easily mixed with the stock solution in the mixing chamber, and is further foamed and regulated in the nozzle to form fine foam.

The equilibrium pressure of the compressed gas is not particularly limited. For example, the compressed gas is filled in a container body filled with a stock solution, and the equilibrium pressure in the container body at 25 ° C. is preferably 0.4 MPa or more, more preferably 0.45 MPa or more. preferable. In addition, the equilibrium pressure of the compressed gas in the container body at 25° C. is preferably 2.0 MPa or less, more preferably 1.5 MPa or less.

In addition, trans-1-chloro-3,3,3-trifluoropropene (HFO-1233zd (E), boiling point 19° C.), Hydrofluoroolefins such as cis-1-chloro-3,3,3-trifluoropropene (HFO-1233zd (Z), boiling point 39 ° C.) and mixtures thereof, hydrocarbons such as isopentane and normal pentane, etc. are further filled. may

Returning to the description of the foamable composition as a whole, the method of preparing the foamable composition is not particularly limited. For example, the foamable composition can be produced by filling a container body with a stock solution, attaching a valve to the container body, and then filling with a compressed gas.

<Discharge container>
The discharge container of the present embodiment is a container filled with the foaming composition. FIG. 1 is a schematic cross-sectional view of a discharge container 1 of this embodiment. FIG. 2 is a schematic cross-sectional view for explaining the foaming discharge nozzle 9 of this embodiment. The discharge container 1 of this embodiment includes a container body 2 and a valve 3 attached to the container body 2 and formed with a discharge passage for discharging the foaming composition to the outside. In the discharge product of this embodiment, the tube member 4, which will be described later, is formed with a gas phase introduction hole P1 and a liquid phase introduction hole P2, and is provided with a mixing chamber 42m. The discharge product may be appropriately redesigned with respect to configurations other than these.

(Container body 2)
The container body 2 is a pressure-resistant container for filling the foaming composition under pressure. The container body 2 may have a general-purpose shape. For example, the container body 2 has a bottomed cylindrical shape with an opening at the top. The opening is a filling port for filling the stock solution. The container main body 2 becomes the discharge container 1 by attaching a valve 3 (to be described later) to the opening and closing it.

The material of the container body 2 is not particularly limited. The container main body 2 only needs to have pressure resistance to the extent that the foamable composition can be filled under pressure. Such materials include metals such as aluminum and tinplate, synthetic resins such as polyethylene terephthalate, pressure-resistant glass, and the like.

(Valve 3)
The valve 3 is a member for closing and sealing the opening of the container body 2 . The valve 3 includes a housing 5, a stem 6 formed with a stem hole 62 communicating between the inside and outside of the container body 2, and a stem rubber 7 attached around the stem hole 62 for closing the stem hole 62. , and a tubular member 4 attached to the housing 5 for introducing the foamable composition into the housing 5 . The valve 3 is attached to the container body 2 by a mounting cup 8 for closing the opening of the container body 2 .

・Housing 5
The housing 5 has a substantially cylindrical shape and accommodates the stem 6 so as to be vertically slidable.

In addition, a mixture introduction hole 52 is formed in the bottom surface of the housing 5 for introducing into the housing 5 an expandable composition obtained by mixing a stock solution and a compressed gas, which will be described later. A substantially cylindrical mounting portion 53 is provided on the lower surface of the housing 5 . The attachment portion 53 is a portion into which one end of the second tube member 42 of the tube member 4 is inserted.

・Stem 6
The stem 6 is a substantially cylindrical portion, and is formed with an intra-stem passage 61 through which the foamable composition taken into the housing 5 at the time of ejection passes. A stem hole 62 is formed in the vicinity of the lower end of the intra-stem passage 61 to communicate the space inside the housing 5 with the intra-stem passage 61 . A foaming discharge nozzle 9 for discharging a foaming composition is attached to the upper end of the stem 6 .

・Stem rubber 7
The stem rubber 7 is a member that is attached around the stem hole 62 and properly isolates the internal space of the housing 5 from the outside. The stem rubber 7 is a disc-shaped member having flexibility, and closes the stem hole 62 by bringing the inner peripheral surface thereof into close contact with the outer peripheral surface of the stem 6 where the stem hole 62 is formed, when discharge is not performed.

The inner peripheral edge of the stem rubber 7 bends downward when the stem 6 slides downward during discharge. As a result, the stem hole 62 is opened by the bent stem rubber 7 . As a result, the foaming composition taken in from the container body 2 passes through the stem hole 62 and the foaming ejection nozzle 9 to be ejected to the outside.

・Tube member 4
The tube member 4 is a member for mixing the compressed gas and the stock solution and taking the mixture into the housing 5 . That is, the foaming composition filled in the container body 2 is separated into compressed gas and undiluted solution. The tube member 4 introduces the compressed gas and the stock solution through separate introduction holes (gas phase introduction hole P1 and liquid phase introduction hole P2), and mixes the compressed gas and the stock solution in the mixing chamber 42m.

The tube member 4 of this embodiment includes a first tube member 41 , a second tube member 42 , and a connecting member 43 that connects the first tube member 41 and the second tube member 42 .

The first tube member 41 has one end formed with the gas phase introduction hole P<b>1 and the other end connected to the connecting member 43 . The first tube member 41 of this embodiment consists of a tube body 41b and a nozzle 41c attached to the end of the tube body 41b. A vapor phase introduction hole P1 is formed in the nozzle 41c. The gas phase introduction hole P1 is open at the gas phase portion (above the liquid level of the liquid) in a state filled with the liquid and the compressed gas. The nozzle 41c can be omitted by thinning the tube body 41b.

The dimensions of the first tube member 41 are not particularly limited. The dimension of the first tube member 41 may be any length necessary for the gas phase introduction hole P1 to open to the gas phase portion. is more preferable. Also, the length of the first tube member 41 is preferably 150 mm or less, more preferably 140 mm or less. The area of the inner diameter of the first tube member 41 is preferably 0.1 mm ² or more, more preferably 0.15 mm ² or more. The area of the inner diameter of the first tube member 41 is preferably 50 mm ² or less, more preferably 20 mm ² or less.

The gas phase introduction hole P1 is provided to adjust the introduction amount of the compressed gas in the gas phase portion. The area of the gas phase introduction hole P1 is not particularly limited. For example, the area of the gas phase introduction hole P1 is preferably 0.01 mm ² or more, more preferably 0.1 mm ² or more. Also, the area of the gas phase introduction hole P1 is preferably 5 mm ² or less, more preferably 3 mm ² or less. In addition, the gas phase introduction hole P1 is not particularly limited as long as it is opened in the gas phase portion.

The hole diameter of the gas phase introduction hole P1 is smaller than the inner diameter of the first tube member 41 . Therefore, even if the ejection member 9 is overturned or shaken, the liquid phase portion is less likely to be introduced through the gas phase introduction hole P1, and only the gas phase portion is more likely to be introduced. In addition, by changing the hole diameter of the gas phase introduction hole P1, the introduction amount of the gas phase can be easily adjusted.

The connecting member 43 is a member that connects the first tube member 41 and the second tube member 42 . The connecting member 43 has a first insertion portion 43p into which the first tube member 41 is inserted and fixed, and a second insertion portion 43q into which the second tube member 42 is inserted and fixed. . In addition, the connecting member 43 is formed with an internal pipe line 43r that connects the first insertion portion 43p and the second insertion portion 43q on its side surface. The internal conduit 43r is open on the side surface of the connecting member 43. As shown in FIG. The opening communicates with the liquid phase portion and acts as a liquid phase introduction hole P2. The flow rate may be adjusted by changing the sizes of the first and second insertion portions 43p and 43q and the internal conduit 43r.

The connecting member 43 is positioned so as to be immersed in the concentrate in the container body 2 by inserting the other end of the second tube member 42, one end of which is connected to the housing 5, into the second insertion portion 43q. there is The liquid phase introduction hole P2 is an opening for introducing the stock solution, and is open near the inner bottom surface of the container body 2 . This makes it easy to introduce the stock solution through the liquid phase introduction hole P2 even when the amount of the stock solution has decreased due to use.

The liquid phase introduction hole P2 is provided for adjusting the introduction amount of the stock solution in the liquid phase portion. The inner area of the liquid phase introduction hole P2 is not particularly limited. For example, the inner area of the liquid phase introduction hole P2 is preferably 0.01 mm ² or more, more preferably 0.03 mm ² or more. The inner area of the liquid phase introduction hole P2 is preferably 2 mm ² or less, more preferably 1 mm ² or less.

The second tube member 42 has one end connected to the connecting member 43 and the other end inserted into the mounting portion 53 of the housing 5 . The internal space of the second tube member 42 is a mixing chamber 42m for mixing the compressed gas introduced from the gas phase introduction hole P1 and the stock solution taken from the liquid phase introduction hole P2.

The dimensions of the second tube member 42 are not particularly limited. The dimension of the second tube member 42 may be any length that allows the compressed gas and the stock solution to be mixed. Also, the length of the second tube member 42 is preferably 200 mm or less, more preferably 150 mm or less. Also, the inner area of the second tube member 42 is preferably 0.2 mm ² or more, more preferably 0.5 mm ² or more. Also, the inner area of the second tube member 42 is preferably 50 mm ² or less, more preferably 10 mm ² or less, and even more preferably 5 mm ² or less.

・Bubbling nozzle 9
As shown in FIG. 2, the foaming discharge nozzle 9 is a discharging member for accelerating the foaming of the foaming composition, adjusting the foam and discharging fine foam, and is used by being attached to the upper end of the discharging container. be done. The foaming discharge nozzle 9 can operate the stem 6 by being operated by the user, thereby performing a discharge operation. The foaming discharge nozzle 9 is composed of a body portion 91 and a nozzle portion 92 formed with a discharge hole 92e through which the foaming composition is discharged. Note that the main body portion 91 and the nozzle portion 92 may be an integrated member or may be separate members.

・Body part 91
The body part 91 is a part operated by the user and attached to the upper end of the stem 6 . The body portion 91 is formed with a first passage 91 a through which the foamable composition taken from the discharge container 1 passes toward the nozzle portion 92 .

The cross-sectional shape of the first passage 91a is substantially L-shaped. The first passage 91a includes a proximal side passage 91b communicating with the in-stem passage 61, and a distal side passage 91c curved in a direction perpendicular to the proximal side passage 91b.

The diameter d1 of the tip-side passage 91c should be larger than the diameter d2 of the second passage in the narrowed portion 92b, which will be described later. As an example, the diameter of the distal passage 91c is 1 to 5 mm.

・Nozzle part 92
The nozzle part 92 is a substantially cylindrical part for promoting the foaming of the foamable composition, adjusting the foam, and discharging the fine foam. The nozzle portion 92 is formed with a second passage 92a that communicates with the distal end side passage 91c of the first passage 91a. Further, the nozzle portion 92 has a throttle portion 92b, a tapered portion 92c, and a cylindrical portion 92d in which a discharge hole 92e is formed. The second passage 92a is composed of internal passages in the narrowed portion 92b, the tapered portion 92c, and the cylindrical portion 92d. The diameter d2 of the second passage 92a is the diameter of the internal passage in the constricted portion 92b, and is the smallest diameter in the entire second passage 92a. The foaming composition in a foamed state is discharged from the discharge hole 92e. In addition, in this embodiment, the cylindrical portion 92d is a portion that is preferably provided, and is not essential.

The shape of the discharge hole 92e may be substantially circular, substantially rectangular, or the like.

The length of the nozzle portion 92 is not particularly limited. For example, the length of the nozzle portion 92 is preferably 20 mm or longer, more preferably 25 mm or longer. Also, the length of the nozzle portion 92 is preferably 100 mm or less, more preferably 90 mm or less. Since the length of the nozzle portion 92 is within the above range, the foaming discharge nozzle 9 can easily adjust the foaming of the foamable composition.

The throttle part 92b is a part for compressing the foamable composition drawn out from the first passage, making the compressed gas fine, and finely dispersing it in the discharge.

The diameter d2 of the second passage in the constricted portion 92b should be smaller than the diameter d1 of the first passage 91a (the tip side passage 91c). For example, the diameter d2 of the second passage in the narrowed portion 92b is preferably 0.2 mm or more, more preferably 0.3 mm or more. Also, the diameter d2 of the second passage in the constricted portion 92b is preferably 3 mm or less, more preferably 2.5 mm or less. Since the diameter d2 of the second passage in the constricted portion 92b is within the above range, the foaming discharge nozzle can easily make the compressed gas fine and easily disperse it finely.

The ratio (d2/d1) between the diameter d2 of the second passage in the constricted portion 92b and the diameter d1 of the first passage 91a (the tip side passage 91c) is preferably 0.1 to 0.8. It is more preferably 2 to 0.7. Since the ratio of the diameter of the second passage in the constricted portion 92b to the diameter of the first passage 91a (the tip side passage 91c) is within the above range, the foaming discharge nozzle is led out from the first passage in the constricted portion 92b. The expanded foam composition is compressed, and the compressed gas is easily finely divided and finely dispersed. As a result, the ejected foaming composition tends to be more finely foamed.

The length of the narrowed portion 92b is not particularly limited. As an example, the length of the narrowed portion 92b is 7 to 30 mm. Since the length of the constricted portion 92b is within the above range, the foaming discharge nozzle easily compresses the foamable composition drawn out from the first passage, and easily finely disperses the compressed gas.

The tapered portion 92c allows the foamable composition that has passed through the narrowed portion 92b to progress along the inner wall of the second passage in the tapered portion 92c toward the discharge hole 92e, thereby gently compressing the foamable composition. This is a part for releasing, adjusting the momentum of ejection, and adjusting foamability.

The diameter of the second passage in the tapered portion 92c is tapered from the diameter of the second passage in the constricted portion 92b to the diameter of the second passage in the cylindrical portion 92d, which will be described later.

The length of the tapered portion 92c is not particularly limited. For example, the tapered portion 92c has a length of 10 to 50 mm. By setting the length of the tapered portion 92c within the above range, the foaming ejection nozzle can easily adjust the force of ejection of the foaming composition, and easily adjust the foamability.

The cylindrical portion 92d is a portion for adjusting the foaming state of the foamable composition and the force of ejection.

The diameter of the second passage in the cylindrical portion 92d should be larger than the diameter of the second passage in the throttle portion 92b. For example, the diameter of the second passage in the cylindrical portion 92d is preferably 4 mm or more, more preferably 5 mm or more. Also, the diameter of the second passage in the cylindrical portion 92d is preferably 15 mm or less, more preferably 12 mm or less. Since the diameter of the second passage in the cylindrical portion 92d is within the above range, the foaming discharge nozzle can easily adjust the discharge amount of the foaming composition and does not easily crush the foaming composition formed up to the tapered portion.

The length of the cylindrical portion 92d is not particularly limited. For example, the length of the cylindrical portion 92d exceeds 0 mm and is 40 mm or less (an embodiment in which the length of the cylindrical portion 92d is 0 (that is, an embodiment in which the cylindrical portion 92d is not provided) , which will be described later as a second embodiment). Since the length of the cylindrical portion 92d is within the above range, the foaming discharge nozzle can easily adjust the foaming state and the force of discharge of the foamable composition.

<Description of discharge operation>
Next, the ejection operation when the foaming composition is ejected using the ejection product of the present embodiment will be described.

(Mechanism of ejection)
In the discharge product of this embodiment, when the foaming discharge nozzle 9 is pushed down, the stem 6 of the valve 3 is pushed downward. As a result, the stem rubber 7 bends downward and the stem hole 62 is opened. As a result, the inside of the container main body 2 and the outside communicate with each other. When the inside of the container main body 2 and the outside communicate with each other, the liquid surface of the undiluted liquid is pressurized downward according to the pressure difference between the pressure of the compressed gas forming the gas phase portion and the atmospheric pressure. At this time, the compressed gas forming the gas phase portion is introduced into the first tube member 41 from the gas phase introduction hole P1, passes through the first tube member 41 and the internal conduit 43r of the connecting member 43, It is directed to the mixing chamber 42m of the second tube member 42. On the other hand, the pressurized undiluted solution is introduced into the internal conduit 43r of the connecting member 43 through the liquid phase introduction hole P2 of the connecting member 43, passes through the internal conduit 43r, and enters the mixing chamber 42m of the second tube member 42. Head.

The compressed gas and stock solution are introduced into the mixing chamber 42m, automatically mixed and directed to the housing 5. In addition, when the compressed gas and the stock solution flow through the mixing chamber 42m toward the housing 5, the flow velocity is restricted by the resistance of the flow path from the mixing chamber, and the stock solution and the compressed gas are easily mixed. Compressed gas expands and bubbles easily, forming stable and fine bubbles.

The mixture of compressed gas and stock solution introduced into the housing 5 then passes through the stem hole 62 and the in-stem passage 61 and is sent to the foaming discharge nozzle 9 . The foaming composition taken into the foaming discharge nozzle 9 is compressed by receiving flow resistance in the narrowed portion 92b, the compressed gas is finely divided, and the flow resistance is reduced in the tapered portion 92c. As a result, the compressed gas gradually expands, promoting foaming. In addition, since the diameter of the second passage is tapered at the tapered portion 92c, the momentum of the foaming composition is adjusted, and the foaming composition is discharged from the discharge hole 92e of the cylindrical portion 92d in fine bubbles. be done.

The foaming composition of the present embodiment, in which the undiluted solution and the compressed gas are mixed in the mixing chamber 42m, is further accelerated to foam by the foaming discharge nozzle and is foam-stabilized. As a result, the resulting discharge is finely foamed, although the use of liquefied gas is not essential. In addition, even if the discharge product of this embodiment is not shaken before discharging to cause foaming in the container, by using the foaming discharge nozzle of this embodiment, foaming of the stock solution and compressed gas is promoted and fine Foam can be ejected. Therefore, the discharge product of the present embodiment does not require shaking the container before discharge, and can be suitably used as a stationary discharge product such as face wash foam, hand wash foam, shampoo, and the like.

(Mechanism during non-ejection)
When the foaming discharge nozzle 9 is completely pushed down, the stem rubber 7 is released from bending, and the stem hole 62 is closed again. As a result, the container main body 2 and the outside are blocked again, and the discharge of the foamable composition is finished.

In addition, the manufacturing method of the discharge product of this embodiment is not particularly limited. To give an example, the discharge product can be manufactured by filling the container body 2 with the stock solution, installing the valve 3 to close the container body 2, then filling it with compressed gas, and attaching the foaming discharge nozzle to the stem. can be done.

As described above, according to the present embodiment, despite the simple configuration, the compressed gas in the foamable composition is atomized and finely dispersed at the throttle portion 92b of the foaming discharge nozzle. The foaming composition containing such dispersed compressed gas promotes foaming at the tapered portion 92c, and a finely foamed discharge is easily obtained.

[Second embodiment]
A foaming nozzle according to an embodiment (second embodiment) of the present invention is the same as the foaming nozzle of the first embodiment, except that a cylindrical portion is not provided and a long tapered portion is provided. (See FIGS. 1 and 2). Therefore, in the description of the foaming nozzle of the present embodiment (and the foaming nozzle using the foaming nozzle), description overlapping with that of the first embodiment will be omitted as appropriate.

FIG. 3 is a schematic cross-sectional view for explaining the foaming discharge nozzle 9a of this embodiment. The foaming discharge nozzle 9a is composed of a body portion 91 and a nozzle portion 93 formed with a discharge hole 92e through which the foaming composition is discharged. Note that the main body portion 91 and the nozzle portion 93 may be an integrated member or may be separate members.

・Nozzle part 93
The nozzle part 93 is a substantially cylindrical part for promoting the foaming of the foamable composition, adjusting the foam, and discharging the fine foam. The nozzle portion 93 is formed with a second passage 92a that communicates with the distal end side passage 91c of the first passage 91a. Further, the nozzle portion 93 has a throttle portion 92b and a tapered portion 93a in which a discharge hole 92e is formed.

The tapered portion 93a causes the foaming composition that has passed through the throttle portion 92b to progress along the inner wall of the second passage in the tapered portion 93a toward the discharge hole 92e, thereby gently compressing the foaming composition. This is a part for releasing, adjusting the momentum of ejection, and adjusting foamability.

The diameter of the second passage in the tapered portion 93a is tapered from the diameter of the second passage in the narrowed portion 92b to the diameter of the discharge hole 92e.

The length of the tapered portion 93a is not particularly limited. For example, the tapered portion 93a has a length of 10 to 90 mm. By setting the length of the tapered portion 93a within the above range, the foaming ejection nozzle can easily adjust the force of ejection of the foaming composition, and easily adjust the foamability.

The embodiments of the present invention have been described above with reference to the drawings. The foaming nozzle of the present invention can adopt the following modified embodiments, for example.

(1) In the above-described embodiment, the tapered portion has an example in which the diameter of the second passage in the tapered portion is expanded in a tapered shape. Alternatively, the diameter of the second passage in the tapered portion may not be increased according to the predetermined taper ratio. That is, the taper ratio may be set, for example, such that the taper ratio gradually increases or decreases toward the discharge hole.

(2) In the above-described embodiment, the tapered portion is exemplified with respect to the mode in which the diameter of the second passage in the tapered portion is continuously tapered. Alternatively, the diameter of the second passage in the tapered portion may include a plurality of regions that gradually increase in diameter toward the cylindrical portion or the discharge hole. The tapered portion of the present invention can also include a mode in which a plurality of regions whose diameters are gradually increased in this way are provided.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to Examples. The present invention is by no means limited to these examples.

(Examples 1-4, 8-11)
An aluminum container body (container body 2 (see FIG. 1), body outer diameter φ45, height 140 mm, full pour amount 200 mL) is filled with 50 g of the undiluted solution of the following prescription, and the specifications shown in Table 1 below. The valve 3 was secured according to The density of the stock solution was 1.05 (g/mL, 25°C). Nitrogen gas was filled from the stem 6 to set the pressure in the container main body to 0.5 MPa (25° C.), and the foaming nozzle 9 (see FIG. 2) was attached to the stem 6 to produce a discharged product. Table 1 shows the dimensions of each portion of the foaming nozzle 9 and the valve 3 used in each example.

<Undiluted solution>
Lauryl phosphate (*1) 15.0
Sorbitol 10.0
Dipropylene glycol 10.0
Cocamidopropyl betaine (*2) 3.0
Laureth-11 carboxylic acid (*3) 1.2
Polyquaternium-52/PEG-32/purified water (*4) 1.0
PEG-160 sorbitan triisostearate (*5) 0.5
Methylparaben 0.1
Purified water 59.2
Total 100.0 (% by mass)
*1: Priory B650D, manufactured by Kao Corporation *2: Levon 2000HG, manufactured by Sanyo Chemical Industries, Ltd. *3: Kao Akipo RLM100, manufactured by Kao Corporation *4: Softcare KG-301W, manufactured by Kao Corporation *5 : Rheodor TW-IS399C, manufactured by Kao Corporation

(Examples 5 and 12)
Fill the aluminum container body (container body 2 (see FIG. 1), body outer diameter φ45, height 140 mm, full pour amount 200 mL) with 50 g of the undiluted solution of the above prescription, and meet the specifications shown in Table 1 below. Therefore, valve 3 was stuck. Nitrogen gas was filled from the stem 6 to set the pressure in the container body to 0.5 MPa (25° C.), and the foaming nozzle 9 (see FIG. 3) was attached to the stem 6 to produce a discharged product. Table 1 shows the dimensions of each portion of the foaming nozzle 9 and the valve 3 used in each example.

(Examples 6 and 13)
Fill the aluminum container body (container body 2 (see FIG. 1), body outer diameter φ45, height 140 mm, full pour amount 200 mL) with 70 g of the undiluted solution of the above prescription, and meet the specifications shown in Table 1 below. Therefore, valve 3 was stuck. Nitrogen gas was filled from the stem 6 to set the pressure in the container main body to 0.8 MPa (25° C.), and the foaming nozzle 9 (see FIG. 2) was attached to the stem 6 to produce a discharged product. Table 1 shows the dimensions of each portion of the foaming nozzle 9 and the valve 3 used in each example.

(Examples 7 and 14)
An aluminum container body (container body 2 (see FIG. 1), body outer diameter φ45, height 140 mm, full pour amount 200 mL) is filled with 100 g of the undiluted solution of the above prescription, and the specifications shown in Table 1 below. Therefore, valve 3 was stuck. Nitrogen gas was filled from the stem 6 to set the pressure in the container main body to 1.5 MPa (25° C.), and the foaming nozzle 9 (see FIG. 2) was attached to the stem 6 to produce a discharged product. Table 1 shows the dimensions of each portion of the foaming nozzle 9 and the valve 3 used in each example.

(Comparative example 1)
Fill the aluminum container body (container body 2 (see FIG. 1), body outer diameter φ45, height 140 mm, full pour amount 200 mL) with 50 g of the undiluted solution of the above prescription, and meet the specifications shown in Table 1 below. Therefore, valve 3 was stuck. Nitrogen gas is filled from the stem 6 to set the pressure in the container body to 0.5 MPa (25° C.), and the stem 6 is attached with a foaming discharge nozzle 10 (see FIG. 4) having a nozzle 10a without a tapered portion to discharge. manufactured the product. FIG. 4 is a schematic cross-sectional view for explaining the foaming discharge nozzle 10 having no tapered portion. The foaming nozzle 10 includes a nozzle portion 10a including a body portion 91, a throttle portion 10b, and a cylindrical portion 10c connected to the throttle portion 10b. Table 1 shows the dimensions of each portion of the foaming nozzle 10 used in Comparative Example 1.

(Comparative example 2)
Fill the aluminum container body (container body 2 (see FIG. 1), body outer diameter φ45, height 140 mm, full pour amount 200 mL) with 50 g of the undiluted solution of the above prescription, and meet the specifications shown in Table 1 below. Therefore, valve 3 was stuck. Nitrogen gas was filled from the stem 6 to set the pressure in the container main body to 0.5 MPa (25° C.), and the foaming nozzle 11 (see FIG. 5) was attached to the stem 6 to produce a discharged product. FIG. 5 is a schematic cross-sectional view for explaining the foaming discharge nozzle 11 having no constricted portion. The foaming nozzle 11 does not have a constricted portion, and includes a nozzle portion 11a having a linear portion 11b, a tapered portion 11c, and a cylindrical portion 11d. The inner diameters of the distal end side passage 91c of the body portion 91 and the straight portion 11b are approximately the same. That is, the inner diameter of the straight portion 11b is not narrowed with respect to the inner diameter of the tip-side passage 91c. Table 1 shows the dimensions of each part of the foaming nozzle 11 and the valve 3 used in Comparative Example 2. In addition, in Table 1, the dimensions of the linear portion 11b are described in the column of "throttle portion".

The ejection state of the ejection products of Examples 1 to 14 and Comparative Examples 1 and 2 was evaluated by the following evaluation method.

(discharge state)
Adjust the discharged product to 25 ° C., discharge the discharged product into a cup with a full amount of 25 mL without shaking, fill with foam, measure the weight of the foam to calculate the foam density (g / mL), and evaluate the following Evaluated according to criteria.
(Evaluation criteria)
A: The foam density was less than 0.10 (g/mL), and very fine foam was formed.
◯: The foam density was 0.10 to 0.15 (g/mL), and fine foam was formed.
x: The foam density was 0.16 (g/mL) or more, and fine foam could not be formed.

As shown in Table 1, the dispensing products of Examples 1-14 of the present invention produced fine foam. On the other hand, the discharge product of Comparative Example 1, which did not have a tapered portion, could not form fine bubbles and had a strong force. The discharge product of Comparative Example 2, which does not have a constricted portion, could not form fine bubbles.

1 discharge container 2 container main body 3 valve 4 tube member 41 first tube member 41b tube main body 41c nozzle 42 second tube member 42m mixing chamber 43 connecting member 43p first insertion portion 43q second insertion portion 43r internal conduit 5 housing 51 gas phase communication hole 52 mixture introduction hole 53 mounting part 6 stem 61 passage in stem 62 stem hole 7 stem rubber 8 mounting cup 9, 9a, 10, 11 foaming discharge nozzle 91 main body 91a first passage 91b base end Side passage 91c Tip side passage 92, 93, 10a, 11a Nozzle portion 92a Second passage 92b, 10b Constricted portion 11b Linear portion 92c, 93a, 11c Tapered portion 92d, 10c, 11d Cylindrical portion 92e Discharge hole d1 Diameter of tip side passage d2 Diameter of second passage P1 Gas phase introduction hole P2 Liquid phase introduction hole

Claims (7)

It is used by being attached to a discharge container filled with a foaming composition composed of a stock solution containing a foaming agent and a compressed gas. prepared,
The body portion is formed with a first passage through which the foamable composition taken in from the discharge container passes toward the nozzle portion,
The nozzle part is
A second passage communicating with the first passage is formed,
having a constricted portion and a tapered portion,
The diameter of the second passage in the narrowed portion is smaller than the diameter of the first passage,
A foaming discharge nozzle, wherein the diameter of the second passage in the tapered portion is tapered so as to increase from the diameter of the second passage in the narrowed portion to the diameter of the second passage in the discharge hole. 2. The foaming discharge nozzle according to claim 1, wherein the diameter of said second passage in said constricted portion is 0.2 to 3 mm. 3. The foaming discharge nozzle according to claim 1, wherein a ratio of a diameter of said second passage to a diameter of said first passage in said narrowed portion is 0.1 to 0.8. The foaming discharge nozzle according to any one of claims 1 to 3, wherein the nozzle part has a cylindrical part between the tapered part and the discharge hole. The foaming discharge nozzle according to any one of claims 1 to 4, wherein the nozzle portion has a length of 20 to 100 mm. Foaming comprising a foaming composition comprising a stock solution containing a foaming agent and a compressed gas, a discharge container filled with the foaming composition, and the foaming discharge nozzle according to any one of claims 1 to 5. discharge product. The discharge container comprises a container body, and a valve attached to the container body and formed with a discharge passage for discharging the foamable composition to the outside,
the valve comprising a housing and a tubular member attached to the housing for incorporating the foamable composition into the housing;
The tube member is
a gas phase introduction hole that is open to the gas phase portion of the foamable composition filled in the container body and for introducing the gas phase portion;
a liquid phase introduction hole that is open to the liquid phase portion of the foamable composition filled in the container body and for introducing the liquid phase portion is formed;
7. The foaming dispensing product of claim 6, comprising a mixing chamber for mixing said gas phase portion and said liquid phase portion of said foamable composition introduced.

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