Foam dispensing container

Abstract

The present application relates to a foam discharge container capable of maintaining fine and uniform foam quality while suppressing clogging of porous bodies. The foam discharge container is provided with a container main body for housing a liquid composition, and a foam discharge device that mixes the liquid composition housed in the container main body with air and discharges the mixture as foam, the foam discharge device having a plurality of porous bodies through which the liquid composition passes when the liquid composition is discharged, the plurality of porous bodies having a front-end-side porous body disposed near a discharge port of the foam discharge device, the front-end-side porous body being composed of polyethylene terephthalate.

Description

Technical Field

[0001] This invention relates to a foam dispensing container. Background Technology

[0002] Foam dispensers have long been widely used to dispense liquid compositions such as hand sanitizers, facial cleansers, and shower gels in a foam-like form. Specifically, the composition contained in the foam dispenser mixes with gases such as air to form foam, and the resulting foam flows through the internal flow path of the foam dispenser and is dispensed from the outlet.

[0003] Here, a porous body through which the foam typically flows is formed, making the foam finer. Synthetic fibers such as nylon, polyethylene, and polypropylene are commonly used as the porous body.

[0004] Therefore, there is a need for a foam dispensing container that can produce more uniform and fine foam. For example, Patent Document 1 discloses a foam dispensing device that uses two porous bodies with different sieve sizes on the nozzle side to allow the foam-like liquid to pass through the porous bodies, thereby dispensing a more uniform foam-like liquid.

[0005] However, in the foam ejection device of Patent Document 1, if the device is left for a long time after the foam is ejected or is used intermittently for a long time, the foam remaining on the porous body on the nozzle side will dry and solidify, thereby blocking the pores of the porous body. This results in problems such as the pump not pressing smoothly, the liquid being ejected becoming difficult, and the inability to stably obtain uniform and fine foam.

[0006] In addition, in the foam ejection device of Patent Document 1, there is a problem that the pressing force is too large when pressing the foam ejection device to eject foam.

[0007] Existing technical documents

[0008] Patent documents

[0009] Patent Document 1: Japanese Utility Model Patent No. 3163646 Summary of the Invention

[0010] The present invention was made in view of the problems existing in the prior art. One object of the present invention is to provide a foam dispensing container capable of maintaining a uniform and fine foam texture and preventing clogging caused by the liquid drying on a porous body. Another object of the present invention is to provide a foam dispensing container capable of reducing the pressing force when pressing the foam dispensing device.

[0011] In order to achieve the above objective, the inventors conducted in-depth research and found that the above problem can be solved by placing a porous body made of a specific material near the outlet.

[0012] Furthermore, the inventors have discovered that by using a liquid composition having a specific composition in the aforementioned foam dispensing container, even better results can be obtained.

[0013] In addition, in order to achieve the other objective mentioned above, the inventors conducted in-depth research and found that the above-mentioned problem can be solved by setting the corner of the connecting flow path that is connected to the outlet of the foam dispensing device and to the flow path of the pump core as a bend instead of a right angle.

[0014] Specifically, one aspect of the present invention relates to the following ① and ②.

[0015] ① A foam dispensing container, wherein the foam dispensing container comprises: a container body for receiving a liquid composition, and a foam dispensing device for mixing the liquid composition received in the container body with air and dispensing it in a foam form.

[0016] The foam ejection device has a plurality of porous bodies through which the liquid composition passes when ejecting the liquid composition.

[0017] The plurality of porous bodies have a front-end porous body disposed near the outlet of the foam dispensing device.

[0018] The front-end porous body is composed of polyethylene terephthalate (PET).

[0019] ②A foam dispensing container, comprising:

[0020] The foam dispensing device of the foam dispensing container described in ① above; and

[0021] The main body of the container holding the liquid composition.

[0022] The liquid composition contains an alcohol with an IOB value of 0.55 to 5.0 as component (A).

[0023] Furthermore, another aspect of the present invention relates to the following ③ and ④.

[0024] ③ A foam dispensing container, wherein the foam dispensing container comprises: a container body for receiving a liquid composition, and a foam dispensing device for mixing the liquid composition received in the container body with air and dispensing it in a foam form.

[0025] The foam dispensing device has an arc-shaped bend that defines a connecting flow path that communicates with the dispensing outlet of the foam dispensing device and with the pump core flow path.

[0026] The bend includes an inner bend and an outer bend.

[0027] ④ A foam dispensing container, comprising:

[0028] The foam dispensing device of the foam dispensing container described in ③ above; and

[0029] The main body of the container holds the liquid composition.

[0030] The liquid composition contains an alcohol with an IOB value of 0.55 to 5.0 as component (A). Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of the side portion of the foam dispensing container according to the first embodiment of the present invention.

[0032] Figure 2 This is a cross-sectional view showing the foam dispensing device according to the first embodiment of the present invention.

[0033] Figure 3 This is a diagram that partially illustrates a porous material according to a first embodiment of the present invention.

[0034] Figure 4 This is a cross-sectional view showing the foam dispensing device according to the second embodiment of the present invention.

[0035] Figure 5 This is a schematic diagram showing the maximum value of the arc radius of the bend of the foam dispensing device according to the second embodiment of the present invention.

[0036] Figure 6 This is a schematic diagram showing the minimum value of the arc radius of the bend of the foam dispensing device according to the second embodiment of the present invention.

[0037] Figure 7 This is a cross-sectional view of a modified example of a foam dispensing device according to the second embodiment of the present invention.

[0038] Explanation of symbols

[0039] 1…Foam ejection container

[0040] 10… Container body

[0041] 20, 20A, 20B... Foam dispensing devices

[0042] 21…Spit out the head

[0043] 21a…First cylindrical section

[0044] 21b…Second cylindrical section

[0045] 21c… Nozzle section

[0046] 21d…spit out

[0047] 22…Cover

[0048] 22a…tubular portion

[0049] 23…1st porous body

[0050] 24…Second porous body

[0051] 25… Third porous material (front-end porous material)

[0052] 26a…Air Chamber

[0053] 26b…Air piston

[0054] 27a…Liquid Chamber

[0055] 27b…Liquid Piston

[0056] 28… linkage rod

[0057] 29… Mixing Chamber

[0058] 25a, 25b… Filament

[0059] 25c…hole

[0060] 30… Pump core flow path

[0061] 31…Connecting Flow Paths

[0062] 32… corners

[0063] 32a…inner bend angle

[0064] 32b…Outer bend angle

[0065] P1…Start point of the inner bend angle

[0066] P2…End point of the inner bend angle

[0067] P3…Start point of the outer bend angle

[0068] P4…the end point of the outer bend angle. Detailed Implementation

[0069] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Furthermore, in this specification and the drawings, structures that actually have the same function are given the same reference numerals, and repeated descriptions are omitted.

[0070] (First Implementation)

[0071] 1. Overall structure of the foam dispensing container

[0072] First, based on Figure 1 and Figure 2 The structure of the foam dispensing container 1 in this embodiment will be described. Figure 1This is a cross-sectional view of the side portion of the foam dispensing container 1 in this embodiment. Figure 2 This is a cross-sectional view showing the foam dispensing device 20 according to an embodiment of the present invention.

[0073] Furthermore, for ease of understanding, in this specification, the direction from the container body 10 toward the foam dispensing device 20 (described later) will be referred to as the upward direction. However, since the user can adopt various postures when using the foam dispensing container 1, the direction from the container body 10 toward the foam dispensing device 20 does not necessarily refer to a vertically upward direction.

[0074] like Figure 1 As shown, the foam dispensing container 1 includes a container body 10 containing a liquid composition and a foam dispensing device 20 that dispenses the liquid composition contained in the container body 10 in a foam form. Specifically, the liquid composition contained in the container body 10 generates foam by mixing with air, and the foam generated in this way is discharged from the dispensing outlet 21d formed in the dispensing head 21 through the internal flow paths 21a-1 and 21c-1 of the foam dispensing device 20.

[0075] The container body 10 is a hollow component with an opening at the top, where a foam dispensing device 20 is installed. The aforementioned liquid composition is contained inside the container body 10. The container body 10 is, for example, made of resin.

[0076] The foam dispensing device 20 dispenses the liquid composition contained inside the container body 10 as foam. The foam dispensing device 20 is, for example, made of resin.

[0077] Specifically, such as Figure 1 and Figure 2 As shown, the foam dispensing device 20 includes a dispensing head 21 and a cap 22. The cap 22 is threaded onto the opening of the container body 10, thereby allowing the foam dispensing device 20 to be detachably mounted to the container body 10. Additionally, the foam dispensing device 20 includes a pump mechanism that forms foam by mixing a liquid composition contained in the container body 10 with air, and delivers the foam to the dispensing head 21.

[0078] The pump mechanism can use a commonly known pump mechanism. For example, such as... Figure 2 As shown, the pump mechanism includes a liquid piston 27b that can slide vertically within the liquid chamber 27a, an air piston 26b that can slide vertically within the air chamber 26a, a linkage rod 28 disposed inside the opening of the container body 10 and linked with the liquid piston 27b and the air piston 26b to move vertically, and a spring (not shown) that pushes the linkage rod 28 upward.

[0079] A mixing chamber 29 is formed at the lower part of the dispensing head 21, where the liquid composition supplied by the liquid piston 27b is mixed with air supplied by the air chamber 26a. When the dispensing head 21 is pressed, the liquid piston 27b and the air piston 26b are pressed down together with the linkage rod 28. The liquid piston 27b supplies the liquid composition contained in the container body 10 to the mixing chamber 29, and the air chamber 26a supplies air to the mixing chamber 29. As a result, the liquid composition and air mix in the mixing chamber 29 to form foam.

[0080] The dispensing head 21 has a first cylindrical portion 21a inserted inside a tubular portion 22a that protrudes upward from the radial center side of the cover portion 22 and extends in the vertical direction, a second cylindrical portion 21b that covers the outer periphery of the tubular portion 22a of the cover portion 22 and extends in the vertical direction, and a nozzle portion 21c that extends radially from the upper part of the first cylindrical portion 21a toward the first cylindrical portion 21a.

[0081] The internal flow path 21a-1 of the first cylindrical portion 21a communicates with the internal flow path 21c-1 of the nozzle portion 21c, and an outlet 21d is formed at the front end of the nozzle portion 21c. Furthermore, the aforementioned mixing chamber 29 is formed at the lower part of the internal flow path 21a-1 of the first cylindrical portion 21a, and a first porous material 23 and a second porous material 24 are sequentially disposed from below downstream (i.e., upper) of the mixing chamber 29 of the internal flow path 21a-1 of the first cylindrical portion 21a. Thus, the foam formed in the mixing chamber 29 is refined by the first porous material 23 and the second porous material 24, and then fed into the internal flow path 21c-1 of the nozzle portion 21c through the internal flow path 21a-1 of the first cylindrical portion 21a. Subsequently, the foam is further refined by the third porous material 25 disposed near the outlet 21d, and then discharged from the outlet 21d. The first to third porous bodies 23 to 25 are film-like or plate-like components with multiple through-holes. Here, the third porous body 25 is a front-end porous body disposed near the outlet 21d, and the first porous body 23 and the second porous body 24 are internal porous bodies disposed upstream of the third porous body 25 (upstream of the foam flow direction). Details of these porous bodies will be explained later. Furthermore, in Figure 1 In this process, the internal flow path is a bent shape, but it is not limited to this; it can also be a straight shape (e.g., an upward-extending shape).

[0082] 2. Porous body

[0083] Next, based on Figures 1-3 The porous material of this embodiment will be described in detail. Figure 3 This is a diagram that partially illustrates the third porous material 25 of this embodiment.

[0084] As described above, the third porous body 25 is a front-end side porous body disposed near the outlet 21d. Specifically, "the third porous body 25 is disposed near the outlet 21d" means that the distance from the surface of the third porous body 25 on the outlet 21d side to the opening surface of the outlet 21d is within a specific range, for example, the distance can be less than 20 mm.

[0085] like Figure 3 As shown, the third porous body 25 has a sieve shape. Specifically, the third porous body 25 has a plurality of filamentous portions 25a extending along a first direction at intervals from each other, and a plurality of filamentous portions 25b extending along a second direction orthogonal to the first direction at intervals from each other. A plurality of pores 25c, generally rectangular in shape, are divided by the plurality of filamentous portions 25a and 25b. The shape of the pores 25c is not limited to a rectangular shape; it can also be various shapes such as circular, elliptical, triangular, or polygonal.

[0086] In this embodiment, in the third porous body 25, a plurality of filamentous portions 25a and a plurality of filamentous portions 25b are arranged at equal intervals, and the interval between adjacent filamentous portions 25a is approximately the same as the interval between adjacent filamentous portions 25b. Therefore, each pore portion 25c has a generally square shape of the same size. Alternatively, the interval between adjacent filamentous portions 25a may be different from the interval between adjacent filamentous portions 25b, thus each pore portion 25c has a generally rectangular shape of the same size.

[0087] Here, the third porous body 25, more specifically, the filamentous portions 25a and 25b constituting the third porous body 25, are preferably made of polyethylene terephthalate (PET). By placing the third porous body 25 made of PET near the outlet 21d, good foam quality can be maintained while inhibiting the liquid composition from drying and solidifying on the porous body, thus preventing blockage of the pores. This is believed to be because the surface of the porous body made of polyethylene terephthalate has a large contact angle with water and is highly hydrophobic, making it difficult for the liquid composition to adhere to the highly hydrophobic polyethylene terephthalate porous body, thereby inhibiting the liquid composition from drying and solidifying on the porous body and blocking it.

[0088] As such a porous material composed of PET, a porous material produced by conventional methods can be used, specifically a porous material woven from PET monofilaments in plain or twill weave on a flexible rapier loom.

[0089] Furthermore, the third porous body can be composed of one or more porous bodies made of PET. From the viewpoint of suppressing pore blockage of the third porous body 25, the third porous body is preferably composed of one porous body made of PET.

[0090] From the viewpoint of preventing pore blockage of the third porous material 25, the mesh size of the third porous material 25 is preferably 100 mesh or more. In addition, from the viewpoint of obtaining fine and abundant foam, the mesh size of the third porous material 25 is preferably 350 mesh or less, more preferably 300 mesh or less, and even more preferably 200 mesh or less.

[0091] In addition, the thickness of the third porous material 25 is not particularly limited. From the point of view of balancing strength and suppressing clogging, it can be about 50 to 120 μm.

[0092] The first porous body 23 and the second porous body 24 have the same structure as the third porous body 25. That is, the first porous body 23 and the second porous body 24 have a sieve shape. The first porous body 23 and the second porous body 24 have a plurality of filamentous portions that are spaced apart from each other and extend along a first direction, and a plurality of filamentous portions that are spaced apart from each other and extend along a second direction orthogonal to the first direction, dividing a plurality of pores with a generally rectangular shape by these filamentous portions. The shape of the pores is not limited to a rectangular shape, and can also be various shapes such as circular, elliptical, triangular, polygonal, etc.

[0093] The materials constituting the first porous body 23 and the second porous body 24 are not particularly limited. They can be made of the same materials as the third porous body 25, or they can be made of materials commonly used in existing foam dispensing containers that are different from the third porous body 25. For example, the first porous body 23 and the second porous body 24 can be made of any material such as nylon, polyethylene, or polypropylene. However, from the viewpoint of ease of manufacturing, it is preferable that the materials constituting the first porous body 23 and the second porous body 24 are the same as those constituting the third porous body 25.

[0094] From the viewpoint of obtaining fine and rich foam, the mesh size of the first porous material 23 is preferably 200 mesh or more and 350 mesh or less, more preferably 200 mesh or more and 300 mesh or less, and even more preferably 200 mesh or more and 250 mesh or less; the mesh size of the second porous material 24 is preferably 200 mesh or more and 350 mesh or less, more preferably 250 mesh or more and 350 mesh or less, and even more preferably 300 mesh or more and 350 mesh or less.

[0095] Of the first to third porous materials 23 to 25, the mesh size of the third porous material 25 is preferably smaller than that of the first porous material 23 and the second porous material 24 disposed upstream of the third porous material 25. In this case, the foam of the liquid composition passes through the third porous material 25 again before being expelled from the outlet, which can form a finer and more uniform foam. At the same time, since the mesh size of the third porous material 25 is smaller than that of the first porous material 23 and the second porous material 24 upstream, it helps to prevent the liquid composition from drying and solidifying on the porous material and clogging it. In addition, the mesh size of each porous material is not limited to this example. The mesh size of the third porous material 25 may be the same as that of the first porous material 23 and the second porous material 24, or the mesh size of each porous material may be arranged arbitrarily within the above range.

[0096] 3. Liquid composition

[0097] The following liquid composition is preferably used in the foam dispensing container of the present invention. Here, the components of the liquid composition preferably used in the foam dispensing container of the present embodiment will be described.

[0098] From the viewpoint of good foaming properties, the liquid composition of the present invention preferably contains a commonly used foaming surfactant. The foaming surfactant may be any one or more of anionic surfactants, amphoteric surfactants, and nonionic surfactants.

[0099] Examples of anionic surfactants include alkylbenzene sulfonates, alkyl or alkenyl ether sulfates, alkyl or alkenyl sulfates, olefin sulfonates, alkane sulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfonyl fatty acid salts, N-acyl amino acid type surfactants, phosphate mono- or diester type surfactants, and sulfosuccinate salts. From the viewpoint of good foaming properties, saturated or unsaturated fatty acid salts and alkyl or alkenyl ether carboxylates are preferred. Examples of saturated or unsaturated fatty acid salts include, for example, fatty acid salts having a straight-chain or branched alkyl or alkenyl group having 9 to 21 carbon atoms; more specifically, salts of lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, arachidic acid, and behenic acid are also examples. In addition, examples of salts for these include alkali metals such as sodium and potassium; alkaline earth metals such as calcium and magnesium; ammonium, and ammonium derived from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, and aminomethylpropanol; and cations derived from basic amino acids such as arginine and lysine. Examples of alkyl or alkenyl ether carboxylates include, for example, fatty alcohol polyether carboxylates with 10 to 18 carbon atoms, and more specifically, salts of lauryl ether carboxylic acid, myristyl ether carboxylic acid, and palmitol ether carboxylic acid. (The text repeats itself here.)

[0100] Examples of amphoteric surfactants include imidazoline, carbobenzurine, amide betaine, sulfobetaine, hydroxysulfobetaine, and amide sulfobetaine surfactants. Among these, hydroxysulfobetaine and sulfobetaine are preferred from the viewpoint of good foaming properties. Examples of hydroxysulfobetaine include coconut oil fatty acid hydroxysulfobetaine, lauryl hydroxysulfobetaine, and tetradecyl hydroxysulfobetaine.

[0101] Examples of nonionic surfactants include polyethers, glycoside derivatives, ethoxylated oils and fats, and alkylolamides. Among these, glycoside derivatives are preferred from the viewpoint of good foaming properties. Examples of glycoside derivatives include alkyl glucosides and sucrose fatty acid esters.

[0102] From the viewpoint of obtaining good foaming properties and inhibiting pore clogging of the third porous body 25, the content of the above-mentioned foaming surfactant in the liquid composition is preferably 0.5% by mass or more, more preferably 2% by mass or more, even more preferably 5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 12% by mass or less.

[0103] Furthermore, from the viewpoint of dissolving the liquid composition remaining on the porous body 25, preventing clogging, and not damaging the foam, the liquid composition used in this invention preferably contains an alcohol with an IOB value of 0.55 to 5.0 as component (A).

[0104] Alcohols that can be used as component (A) include glycerol (IOB: 5), propylene glycol (IOB: 3.3), methyl glucetol polyether-20 (IOB: 2.1), 1,2-hexanediol (IOB: 1.7), ethoxydiethylene glycol (IOB: 1.6), PPG-9 diglyceride (IOB: 0.9), diethylene glycol monobutyl ether (IOB: 0.9), phenoxyethanol (IOB: 0.8), polypropylene glycol-9 (IOB: 0.7), ethylhexylglycerol ether (IOB: 0.55), and ethanol (IOB: 2.5).

[0105] From the viewpoint of dissolving the liquid composition remaining on the third porous body 25 and inhibiting clogging, the component (A) is preferably an alcohol with an IOB value of 5.0 or less.

[0106] Here, the IOB value represents the ratio of inorganic to organic values ​​obtained based on the organic concept map (Fujita Mu, Prediction of Organic Compounds and Organic Concept Map, Chemical Field Vol.11, No.10 (1957) pp.719-725), and is obtained by the following formula.

[0107] IOB value = Inorganic value / Organic value

[0108] From the viewpoint of balancing good foam quality and suppressing blockage of the third porous body 25, 1,2-hexanediol (IOB: 1.7), diethylene glycol monobutyl ether (IOB: 0.9), and phenoxyethanol (IOB: 0.8) are preferred.

[0109] The alcohols mentioned above can be used alone or in combination of two or more.

[0110] The content of component (A) in the liquid composition, from the viewpoint of inhibiting the drying of the liquid composition on the third porous body 25, which leads to pore blockage and good foaming, is preferably 2% by mass or more, more preferably 4% by mass or more, further preferably 5% by mass or more, further more preferably 6% by mass or more, and preferably 50% by mass or less, more preferably 48% by mass or less, further preferably 45% by mass or less, and further more preferably 30% by mass or less.

[0111] The liquid composition may also contain other ingredients without impairing the effects of the present invention. These other ingredients may be appropriately selected based on the intended use and purpose of the composition. Examples of such other ingredients include humectants, chelating agents, vitamins, antioxidants, preservatives, colorants, viscosity modifiers, pH adjusters, and fragrances. Any one or more of these ingredients may be added to the liquid composition.

[0112] Furthermore, the uses of the liquid composition are not particularly limited. Examples include skin cleansing compositions such as hand sanitizers, shower gels, and facial cleansers; skin cosmetics such as lotions and beauty serums; hair cosmetics such as shaving cosmetics, hair styling agents, shampoos, and hair conditioning agents; and dishwashing detergents. Among these, skin cleansing compositions are preferred.

[0113] 4. Use of foam dispensing containers

[0114] Next, the use of the foam dispensing container 1 will be explained. When the user presses the dispensing head 21 of the foam dispensing container 1, a liquid composition and air are supplied to the mixing chamber 29 via a pump mechanism. In the mixing chamber 29, the liquid composition mixes with the air, thereby generating foam. The generated foam is discharged to the outside from the dispensing outlet 21d through internal flow paths 21a-1 and 21c-1. Specifically, the foam generated in the mixing chamber 29 passes through the internal flow path 21a-1, sequentially through the first porous body 23 and the second porous body 24, becoming fine foam. Subsequently, the foam of the liquid composition passes through the third porous body 25, becoming even finer and more uniform foam, before being discharged to the outside.

[0115] Furthermore, from the viewpoint of obtaining good foam quality, it is preferable to discharge foam from the outlet 21d with a volume ratio of air to liquid composition (air / liquid composition) of 15 / 1 or more, preferably 16 / 1 or more, further preferably 17 / 1 or more, and even more preferably 20 / 1 or more. Moreover, from the viewpoint of miniaturizing the foam discharge container 1, it is preferable to discharge foam from the outlet 21d with a volume ratio of air to liquid composition (air / liquid composition) of 38 / 1 or less, preferably 30 / 1 or less, further preferably 29 / 1 or less, and even more preferably 26 / 1 or less.

[0116] Furthermore, the foam dispensing container 1 of this embodiment has three porous bodies, but the number of porous bodies is not limited to three. It is acceptable as long as the number of porous bodies is two or more. Additionally, the arrangement of the porous bodies is not limited to... Figure 1The example shown illustrates that at least one of the multiple porous bodies needs to be a front-end porous body. For example, either the first porous body 23 or the second porous body 24 among the first to third porous bodies 23 to 25 described above can be omitted, or other internal-side porous bodies other than the first porous body 23 and the second porous body 24 can be arranged within the internal flow path 21a-1. Alternatively, other front-end porous bodies other than the third porous body 25 can be arranged near the discharge port 21d.

[0117] (Second Implementation)

[0118] Figure 4 This is a cross-sectional view showing the foam dispensing device according to the second embodiment of the present invention. Figure 5 This is a schematic diagram showing the maximum value of the arc radius of the bend of the foam dispensing device according to the second embodiment of the present invention. Figure 6 This is a schematic diagram showing the minimum value of the arc radius of the bend of the foam dispensing device according to the second embodiment of the present invention.

[0119] The foam dispensing device 20A of this embodiment differs from the foam dispensing device 20 of the first embodiment in that the foam dispensing device 20A does not have a porous body on the front end but has an arc-shaped bend. The other structures of this embodiment are the same as those of the first embodiment, therefore, their description is omitted here.

[0120] like Figure 4 As shown, the foam dispensing device 20A does not have a third porous material (front-end porous material) near the dispensing outlet 21d. In addition, the foam dispensing device 20A has an arc-shaped bend 32 that defines a connecting flow path 31 that communicates with the dispensing outlet 21d of the foam dispensing device 20A and with the pump core flow path 30, and the bend 32 includes an inner bend 32a and an outer bend 32b.

[0121] In addition, such as Figure 5 As shown, the tangents at the starting point P1 and the ending point P2 of the inner bend angle 32a intersect perpendicularly, and the tangents at the starting point P3 and the ending point P4 of the outer bend angle 32b intersect perpendicularly.

[0122] In addition, Figure 5 In the case shown, the radius R1 of the arc at the inner bend angle 32a is the maximum value, which is 5 mm, and the radius R2 of the arc at the outer bend angle 32b is the maximum value, which is 16 mm. Figure 6In the case shown, the radius R1 of the inner bend angle 32a is at its minimum value of 1 mm, and the radius R2 of the outer bend angle 32b is at its minimum value of 5 mm. That is, the radius R1 of the inner bend angle 32a is in the range of 1 to 5 mm, and the radius R2 of the outer bend angle 32b is in the range of 5 to 16 mm. In this way, by keeping the radius R1 of the inner bend angle 32a in the range of 1 to 5 mm and the radius R2 of the outer bend angle 32b in the range of 5 to 16 mm, the pressing force when pressing the foam dispensing device can be effectively reduced.

[0123] Furthermore, the radius of the arc is determined from a cross-sectional view passing through the center of the connecting flow path 31. This cross-sectional view is taken in the foam dispensing device 20A, with the dispensing direction of the outlet 21d as the forward direction and its opposite direction as the backward direction, passing through the center of the connecting flow path 31 in the forward and backward directions.

[0124] Furthermore, the liquid composition used in this embodiment, the volume ratio of air to liquid composition (air / liquid composition), and the use of the foam dispensing container in this embodiment are the same as in the first embodiment described above, therefore, their descriptions are omitted here.

[0125] (A variation of the second embodiment)

[0126] Figure 7 This is a cross-sectional view showing a modified example of the foam dispensing device according to the second embodiment of the present invention. The foam dispensing device 20B of this modified example differs from the foam dispensing device 20A of the second embodiment in that the foam dispensing device 20B also includes a third porous material (front-end side porous material) 25 as described in the first embodiment. The other structures of this modified example are the same as those of the second embodiment, therefore, their description is omitted here.

[0127] like Figure 7 As shown, the third porous body 25 is a front-end porous body disposed near the outlet 21d. Specifically, "the third porous body 25 is disposed near the outlet 21d" means that the distance from the surface of the third porous body 25 on the outlet 21d side to the opening surface of the outlet 21d is within a specific range, for example, the distance can be less than 20 mm.

[0128] The third porous body 25 is the same as in the first embodiment described above, and has a sieve shape. Specifically, the third porous body 25 has a plurality of filamentous portions 25a that are spaced apart from each other and extend along a first direction, and a plurality of filamentous portions 25b that are spaced apart from each other and extend along a second direction orthogonal to the first direction. A plurality of pores 25c, which are approximately rectangular in shape, are divided by the plurality of filamentous portions 25a and 25b. The shape of the pores 25c is not limited to a rectangular shape; it can also be various shapes such as circular, elliptical, triangular, or polygonal.

[0129] In this embodiment, in the third porous body 25, a plurality of filamentous portions 25a and a plurality of filamentous portions 25b are arranged at equal intervals, and the interval between adjacent filamentous portions 25a is approximately the same as the interval between adjacent filamentous portions 25b. Therefore, each pore portion 25c has a generally square shape of the same size. Alternatively, the interval between adjacent filamentous portions 25a may be different from the interval between adjacent filamentous portions 25b, thus each pore portion 25c has a generally rectangular shape of the same size.

[0130] Here, the third porous body 25, more specifically, the filamentous portions 25a and 25b constituting the third porous body 25, are preferably made of polyethylene terephthalate (PET). By placing the third porous body 25 made of PET near the outlet 21d, good foam quality can be maintained while inhibiting the liquid composition from drying and solidifying on the porous body, thus preventing blockage of the pores. This is believed to be because the surface of the porous body made of polyethylene terephthalate has a large contact angle with water and is highly hydrophobic, making it difficult for the liquid composition to adhere to the highly hydrophobic polyethylene terephthalate porous body, thereby inhibiting the liquid composition from drying and solidifying on the porous body and blocking it.

[0131] As such a porous material composed of PET, a porous material produced by conventional methods can be used, specifically a porous material woven from PET monofilaments in plain or twill weave on a flexible rapier loom.

[0132] Furthermore, the third porous body can be composed of one or more porous bodies made of PET. From the viewpoint of suppressing pore blockage of the third porous body 25, the third porous body is preferably composed of one porous body made of PET.

[0133] From the viewpoint of preventing pore blockage of the third porous material 25, the mesh size of the third porous material 25 is preferably 100 mesh or more. In addition, from the viewpoint of obtaining fine and abundant foam, the mesh size of the third porous material 25 is preferably 350 mesh or less, more preferably 300 mesh or less, and even more preferably 200 mesh or less.

[0134] In addition, the thickness of the third porous material 25 is not particularly limited. Considering both strength and the prevention of clogging, it can be around 50 to 120 μm.

[0135] Furthermore, the liquid composition used in this modified example, the volume ratio of air to liquid composition (air / liquid composition), and the use of the foam dispensing container in this modified example are the same as in the first embodiment, therefore, their descriptions are omitted here.

[0136] Regarding the above embodiments, the present invention further discloses the following foam dispensing container.

[0137] <1> A foam dispensing container, comprising: a container body for receiving a liquid composition, and a foam dispensing device for mixing the liquid composition received in the container body with air and dispensing it in a foam form.

[0138] The foam ejection device has a plurality of porous bodies through which the liquid composition passes when ejecting the liquid composition.

[0139] The plurality of porous bodies have a front-end porous body disposed near the outlet of the foam dispensing device.

[0140] The front-end porous body is composed of polyethylene terephthalate (PET).

[0141] <2> As mentioned above <1> The foam dispensing container, wherein the porous body on the front end side has a sieve shape.

[0142] <3> As mentioned above <1> or <2> The foam dispensing container, wherein the porous body on the front end is made of PET monofilament woven in plain or twill weave using a flexible rapier loom.

[0143] <4> As mentioned above <1> ~ <3> The foam dispensing container according to any one of the following, wherein the front-end porous body is composed of one or more pieces of porous body made of PET, preferably one piece of porous body made of PET.

[0144] <5> As mentioned above <1> ~ <4> In any one of the foam dispensing containers, the mesh size of the porous material on the front end side is preferably 100 mesh or more, and more preferably 350 mesh or less, more preferably 300 mesh or less, and even more preferably 200 mesh or less.

[0145] <6> As mentioned above <1> ~ <5> The foam dispensing container described in any one of the following examples, wherein the thickness of the porous material on the front end side is 50–120 μm.

[0146] <7> As mentioned above <1> ~ <6> The foam ejection container as described in any one of the above, wherein the plurality of porous bodies have an inner porous body disposed on the upstream side of the front-end porous body.

[0147] <8> As mentioned above <7> The foam dispensing container wherein the material of the inner porous body is the same as or different from the material of the front porous body, preferably being made of the same material as the material of the front porous body.

[0148] <9> As mentioned above <7> or <8> The foam dispensing container, wherein the number of the internal porous bodies is one or more, preferably two or more, and more preferably two.

[0149] <10> As mentioned above <7> ~ <9> In any one of the foam dispensing containers, when the internal porous material is composed of a first internal porous material and a second internal porous material, the mesh size of the first internal porous material is preferably 200 mesh or more and 350 mesh or less, more preferably 200 mesh or more and 300 mesh or less, and even more preferably 200 mesh or more and 250 mesh or less; the mesh size of the second internal porous material is preferably 200 mesh or more and 350 mesh or less, more preferably 250 mesh or more and 350 mesh or less, and even more preferably 300 mesh or more and 350 mesh or less.

[0150] <11> As mentioned above <1> ~ <10> In any one of the foam dispensing containers, foam is preferably dispensed from the dispensing outlet 21d at an air-to-liquid composition volume ratio (air / liquid composition) of 15 / 1 or more, preferably 16 / 1 or more, more preferably 17 / 1 or more, and even more preferably 20 / 1 or more. Furthermore, foam is preferably dispensed from the dispensing outlet 21d at an air-to-liquid composition volume ratio (air / liquid composition) of 38 / 1 or less, preferably 30 / 1 or less, more preferably 29 / 1 or less, and even more preferably 26 / 1 or less.

[0151] <12> As mentioned above <1> ~ <11> According to any one of the foam dispensing containers, wherein preferably the foam dispensing device has an arc-shaped bend that defines a connecting flow path that communicates with the dispensing outlet and with the pump core flow path, the bend including an inner bend and an outer bend.

[0152] <13> As mentioned above <12> The foam dispensing container, wherein preferably the tangents at the starting point and the ending point of the bend intersect in a perpendicular manner.

[0153] <14> As mentioned above <12> or <13> In the foam dispensing container, the radius of the inner bend is preferably 1-5 mm, and the radius of the outer bend is preferably 5-16 mm.

[0154] <15> A foam dispensing container, wherein:

[0155] The above <1> ~ <14> The foam dispensing device of the foam dispensing container as described in any one of the following: and

[0156] The main body of the container holding the liquid composition.

[0157] The liquid composition contains an alcohol with an IOB value of 0.55 to 5.0 as component (A).

[0158] <16> As mentioned above <15> The foam dispensing container, wherein component (A) is selected from one or more of glycerol, propylene glycol, methyl gluceth-20, 1,2-hexanediol, ethoxydiethylene glycol, PPG-9 diglyceride, diethylene glycol monobutyl ether, phenoxyethanol, polypropylene glycol-9, ethylhexylglycerol ether, and ethanol, preferably selected from one or more of alcohols with an IOB value of 5.0 or less, more preferably selected from one or more of 1,2-hexanediol, diethylene glycol monobutyl ether, and phenoxyethanol.

[0159] <17> As mentioned above <15> or <16> The foam dispensing container wherein the content of component (A) in the liquid composition is preferably 2% by mass or more, more preferably 4% by mass or more, even more preferably 5% by mass or more, even more preferably 6% by mass or more, and preferably 50% by mass or less, more preferably 48% by mass or less, even more preferably 45% by mass or less, and even more preferably 30% by mass or less.

[0160] <18> As mentioned above <15> ~ <17> The foam dispensing container according to any one of the following methods, wherein the liquid composition preferably contains a foaming surfactant, more preferably contains one or more selected from anionic surfactants, amphoteric surfactants, and nonionic surfactants.

[0161] <19> As mentioned above <18> The foam dispensing container, wherein the anionic surfactant is preferably an alkylbenzene sulfonate, alkyl or alkenyl ether sulfate, alkyl or alkenyl sulfate, olefin sulfonate, alkane sulfonate, saturated or unsaturated fatty acid salt, alkyl or alkenyl ether carboxylate, α-sulfonyl fatty acid salt, N-acyl amino acid type surfactant, phosphate mono- or diester type surfactant, sulfosuccinate salt, more preferably a saturated or unsaturated fatty acid salt, alkyl or alkenyl ether carboxylate, further preferably a fatty acid salt with a straight-chain or branched alkyl or alkenyl group having 9 to 21 carbon atoms, or a fatty alcohol polyether carboxylate having 10 to 18 carbon atoms, and even more preferably a salt of lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, arachidic acid, and behenic acid; or a salt of lauryl polyether carboxylate, myristic polyether carboxylate, and palmitol polyether carboxylate.

[0162] <20> As mentioned above <18> In the foam dispensing container, the amphoteric surfactant is preferably an imidazoline, carbobenzurine, amide betaine, sulfobetaine, hydroxysulfobetaine, or amide sulfobetaine surfactant, more preferably a hydroxysulfobetaine or sulfobetaine surfactant, and even more preferably a coconut oil fatty acid hydroxysulfobetaine, lauryl hydroxysulfobetaine, or tetradecyl hydroxysulfobetaine.

[0163] <21> As mentioned above <18> In the foam dispensing container, the nonionic surfactant is preferably a polyether, glycoside derivative, ethoxylated oil and fat, or alkylolamide, more preferably a glycoside derivative, and even more preferably an alkyl glucoside or sucrose fatty acid ester.

[0164] <22> As mentioned above <18> ~ <21> According to any one of the foam dispensing containers, the content of the foaming surfactant in the liquid composition is preferably 0.5% by mass or more, more preferably 2% by mass or more, even more preferably 5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 12% by mass or less.

[0165] <23> As mentioned above <15> ~ <22> The foam dispensing container according to any one of the following methods, wherein the liquid composition is preferably a skin cleansing composition, a skin cosmetic, a hair cosmetic, a dishwashing detergent, and more preferably a skin cleansing composition.

[0166] In addition to the above-described embodiments, the present invention further discloses the following foam dispensing container.

[0167] [1] A foam dispensing container, wherein the foam dispensing container comprises: a container body for receiving a liquid composition, and a foam dispensing device for mixing the liquid composition received in the container body with air and dispensing it in a foam form.

[0168] The foam dispensing device has an arc-shaped bend that defines a connecting flow path that communicates with the dispensing outlet of the foam dispensing device and with the pump core flow path.

[0169] The bend includes an inner bend and an outer bend.

[0170] [2] As described in [1] above, the foam ejection container, wherein the tangent at the starting point of the bend and the tangent at the ending point intersect in a perpendicular manner.

[0171] [3] The foam ejection container as described in [1] or [2] above, wherein the radius of the inner bend is 1 to 5 mm and the radius of the outer bend is 5 to 16 mm.

[0172] [4] The foam dispensing container as described in any one of [1] to [3] above, wherein a front-side porous material is provided near the dispensing outlet of the foam dispensing device.

[0173] [5] The foam ejection container as described in [4] above, wherein the front-end porous body has a sieve shape.

[0174] [6] The foam ejection container as described in [4] or [5] above, wherein the front-end porous material is made of PET monofilament woven in plain or twill weave on a flexible rapier loom.

[0175] [7] The foam dispensing container as described in any one of [4] to [6] above, wherein the front-end porous body is composed of one or more pieces of porous body made of PET, preferably one piece of porous body made of PET.

[0176] [8] The foam dispensing container as described in any one of [4] to [7] above, wherein the mesh size of the porous material on the front end side is preferably 100 mesh or more, and preferably 350 mesh or less, more preferably 300 mesh or less, and even more preferably 200 mesh or less.

[0177] [9] The foam ejection container as described in any one of [4] to [8] above, wherein the thickness of the porous material on the front end side is 50 to 120 μm.

[0178]

[10] A foam ejection container as described in any one of [4] to [9] above, wherein the plurality of porous bodies have an inner porous body disposed on the upstream side of the front-end porous body.

[0179]

[11] As described in

[10] above, the foam ejection container is made of the same or different material as the front-end porous body, preferably of the same material as the front-end porous body.

[0180]

[12] The foam ejection container as described in

[10] or

[11] above, wherein the number of the internal porous bodies is one or more, preferably two or more, and more preferably two.

[0181]

[13] The foam dispensing container as described in any one of

[10] to

[12] above, wherein, when the inner porous material is composed of a first inner porous material and a second inner porous material, the mesh size of the first inner porous material is preferably 200 mesh or more and 350 mesh or less, more preferably 200 mesh or more and 300 mesh or less, and even more preferably 200 mesh or more and 250 mesh or less; the mesh size of the second inner porous material is preferably 200 mesh or more and 350 mesh or less, more preferably 250 mesh or more and 350 mesh or less, and even more preferably 300 mesh or more and 350 mesh or less.

[0182]

[14] The foam dispensing container as described in any one of [1] to

[13] above, wherein the foam is preferably dispensed from the dispensing outlet 21d at a volume ratio of air to liquid composition (air / liquid composition) of 15 / 1 or more, preferably 16 / 1 or more, further preferably 17 / 1 or more, and even more preferably 20 / 1 or more. Moreover, the foam is preferably dispensed from the dispensing outlet 21d at a volume ratio of air to liquid composition (air / liquid composition) of 38 / 1 or less, preferably 30 / 1 or less, further preferably 29 / 1 or less, and even more preferably 26 / 1 or less.

[0183]

[15] A foam dispensing container, comprising:

[0184] The foam dispensing device of the foam dispensing container described in any one of [1] to

[14] above; and

[0185] The main body of the container holding the liquid composition.

[0186] The liquid composition contains an alcohol with an IOB value of 0.55 to 5.0 as component (A).

[0187]

[16] The foam dispensing container as described in

[15] above, wherein the component (A) is selected from one or more of glycerol, propylene glycol, methyl glucetol polyether-20, 1,2-hexanediol, ethoxydiethylene glycol, PPG-9 diglyceride, diethylene glycol monobutyl ether, phenoxyethanol, polypropylene glycol-9, ethylhexylglycerol ether, and ethanol, preferably selected from one or more of alcohols with an IOB value of 5.0 or less, more preferably selected from one or more of 1,2-hexanediol, diethylene glycol monobutyl ether, and phenoxyethanol.

[0188]

[17] The foam dispensing container as described in

[15] or

[16] above, wherein the content of the component (A) in the liquid composition is preferably 2% by mass or more, more preferably 4% by mass or more, even more preferably 5% by mass or more, even more preferably 6% by mass or more, and preferably 50% by mass or less, even more preferably 48% by mass or less, even more preferably 45% by mass or less, even more preferably 30% by mass or less.

[0189]

[18] A foam dispensing container as described in any one of

[15] to

[17] above, wherein the liquid composition preferably contains a foaming surfactant, and more preferably contains one or more selected from anionic surfactants, amphoteric surfactants, and nonionic surfactants.

[0190]

[19] As described in

[18] above, the foam dispensing container, wherein the anionic surfactant is preferably an alkylbenzene sulfonate, alkyl or alkenyl ether sulfate, alkyl or alkenyl sulfate, olefin sulfonate, alkane sulfonate, saturated or unsaturated fatty acid salt, alkyl or alkenyl ether carboxylate, α-sulfonyl fatty acid salt, N-acyl amino acid type surfactant, phosphate mono- or diester type surfactant, sulfosuccinate salt, more preferably a saturated or unsaturated fatty acid salt, alkyl or alkenyl ether carboxylate, further preferably a fatty acid salt with a straight chain or branched alkyl or alkenyl group having 9 to 21 carbon atoms, or a fatty alcohol polyether carboxylate having 10 to 18 carbon atoms, and even more preferably a salt of lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, arachidic acid and behenic acid; or a salt of lauryl polyether carboxylate, myristic acid polyether carboxylate and palmitol polyether carboxylate.

[0191]

[20] As described in

[18] above, the foam dispensing container, wherein the amphoteric surfactant is preferably an imidazoline, carbon-based betaine, amide betaine, sulfonyl betaine, hydroxysulfonyl betaine, or amide sulfonyl betaine surfactant, more preferably hydroxysulfonyl betaine or sulfonyl betaine, and even more preferably coconut oil fatty acid hydroxysulfonyl betaine, lauryl hydroxysulfonyl betaine, or tetradecyl hydroxysulfonyl betaine.

[0192]

[21] As described in

[18] above, the foam dispensing container, wherein the nonionic surfactant is preferably a polyether, a glycoside derivative, an ethoxylated oil and fat, or an alkylolamide, more preferably a glycoside derivative, and even more preferably an alkyl glucoside or a sucrose fatty acid ester.

[0193]

[22] The foam dispensing container as described in any one of

[18] to

[21] above, wherein the content of the foaming surfactant in the liquid composition is preferably 0.5% by mass or more, more preferably 2% by mass or more, even more preferably 5% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 12% by mass or less.

[0194]

[23] A foam dispensing container as described in any one of

[15] to

[22] above, wherein the liquid composition is preferably a skin cleansing composition, a skin cosmetic, a hair cosmetic, a dishwashing detergent, and more preferably a skin cleansing composition.

[0195] Example

[0196] The present invention will now be described in more detail through embodiments. These embodiments are merely illustrative and are not intended to limit the scope of the invention.

[0197] (Examples 1-17)

[0198] First, prepare as follows Figure 1 , 2The foam dispensing container 1 is shown. The porous materials in the foam dispensing container 1 were modified as shown in Tables 2-4. In Tables 2-4, "PET(200#)" refers to a porous material made of PET with a mesh size of 200 (the trade name of PET is FC510, and the manufacturer is Sinopec Yizheng Chemical Fiber Co., Ltd.), "PET(300#)" refers to a porous material made of PET with a mesh size of 300 (the trade name of PET is FC510, and the manufacturer is Sinopec Yizheng Chemical Fiber Co., Ltd.), and "PET(100#)" refers to a porous material made of PET with a mesh size of 100 (the trade name of PET is FC510, and the manufacturer is Sinopec Yizheng Chemical Fiber Co., Ltd.). Sinopec Yizheng Chemical Fiber Co., Ltd. "PET (350#)" refers to a porous material made of PET with a mesh size of 350 (PET's trade name is FC510, manufactured by Sinopec Yizheng Chemical Fiber Co., Ltd.). "Nylon (200#)" refers to a porous material made of nylon with a mesh size of 200 (nylon's trade name is 1010F5, manufactured by Mitsubishi Engineering, Japan). "Nylon (300#)" refers to a porous material made of nylon with a mesh size of 300 (nylon's trade name is 1010F5, manufactured by Mitsubishi Engineering, Japan). Furthermore, in Tables 2-4, "internal" indicates the porous material on the internal side, and the mesh size in parentheses is the porous material's diameter.

[0199] Next, each liquid composition was prepared according to the combinations and proportions shown in Table 1. Then, by filling the prepared liquid compositions into the foam dispensing container 1, foam dispensing containers of Examples 1 to 17 and Comparative Example 1 were obtained. In addition, the values ​​of each component in the table are mass percentages relative to the total mass of the liquid compositions, and are values ​​based on the active ingredient.

[0200] The following performance evaluations were performed using the foam dispensing containers obtained in the various embodiments and comparative examples.

[0201] <Evaluation of foam quality>

[0202] By pressing the foam dispensing containers of Examples 1-17 and Comparative Example 1 three times, foam of the liquid composition was dispensing from the dispensing port of the foam dispensing container, and the foam was observed visually. Then, the foam quality was evaluated based on the following evaluation criteria, and the results are shown in Tables 2-4 below.

[0203] 6: The foam is very dense and rich.

[0204] 5: The foam is dense and rich.

[0205] 4: The foam is slightly coarse.

[0206] 3: The foam is slightly coarse, with a small number of larger air bubbles.

[0207] 2: The foam is slightly coarse, with many large air bubbles.

[0208] 1: The foam is coarse and contains many large air bubbles.

[0209] <Evaluation of Blockage>

[0210] Each foam ejection container was placed in a constant temperature chamber set at 40°C. The foam ejection operation was performed once a day. The presence of blockage was evaluated based on the following evaluation criteria when the foam was ejected for the 90th time. The short-term blockage evaluation results were obtained and are shown in Tables 2 to 4 below.

[0211] Each foam ejection container was left to stand in a constant temperature chamber set at 40°C. The foam ejection operation was performed once a week. The presence of blockage was evaluated based on the following evaluation criteria during the 12th foam ejection operation. The results of the long-term blockage evaluation were obtained and are shown in Tables 2 to 4 below.

[0212] 5. The pump operates smoothly when pressed, with no change in feel when pressing down (completely free of blockages).

[0213] 4. The pump is easy to press, but the pressure feels slightly heavier when pressing down (slight blockage).

[0214] 3: The pump feels slightly stiff when pressed, and the pressure feels heavier when pressing down (if the blockage is minor).

[0215] 2: The pump feels stiff when pressed, and the pressure feels noticeably heavier when pressing down (significant blockage).

[0216] 1. The pump feels stiff when pressed, and pressing down feels noticeably harder (significant blockage).

[0217] [Table 1]

[0218]

[0219] *1: Product Name: PROPYLENE GLYCOL USP / EP, Manufacturer: The Dow Chemical Company, Active Ingredient Content: 100%

[0220] *2: Product Name: 1,2-Hexanediol (Reagent), Manufacturer: Sigma-Aldrich Corporation, Active Ingredient Content: 100%

[0221] *3: Product Name: SY-DP9, Manufacturer: Sakamoto Yakuhin Kogyo Co., Ltd., Active Ingredient Content: 100%

[0222] *4: Product Name: Diethylene Glycol Monobutyl Ether (Reagent), Manufacturer: Sinopharm Chemical Reagent Co., Ltd., Active Ingredient Content: 100%

[0223] *5: Product Name: NEOLONE PH 100, Manufacturer: The Dow Chemical Company, Active Ingredient Content: 100%

[0224] *6: Product Name: POLYGLYCOL P-425, Manufacturer: The Dow Chemical Company, Active Ingredient Content: 100%

[0225] *7: Product Name: GLYCERIN A (COSMETIC GRADE), Manufacturer: Kao Corporation, Active Ingredient Content: 100%

[0226] *8: Product Name: PENETOL GE-EH, Manufacturer: Kao Corporation, Active Ingredient Content: 90%

[0227] *9: Product Name: Akypo RLM-45CA, Manufacturer: Kao Corporation, Active Ingredient Content: 100%

[0228] *10: Product Name: PALMAC 98-12, Manufacturer: IOI Acidchem Sdn. Bhd., Active Ingredient Content: 100%

[0229] *11: Product Name: PALMAC 98-14, Manufacturer: IOI Acidchem Sdn. Bhd., Active Ingredient Content: 100%

[0230] *12: Product Name: PALMAC 98-16, Manufacturer: IOI Acidchem Sdn. Bhd., Active Ingredient Content: 100%

[0231] *13: Product Name: Amphitol 20HD, Manufacturer: Kao Corporation, Active Ingredient Content: 30%

[0232]

[0233] [Table 3]

[0234]

[0235] [Table 4]

[0236]

[0237] As shown in Tables 2-4 above, by placing a porous material made of PET near the outlet of the foam dispensing container, compared with placing a porous material made of nylon near the outlet of the foam dispensing container, it is possible to maintain a fine and uniform foam while suppressing the clogging of the pores of the porous material near the outlet.

[0238] (Examples 18-28)

[0239] First, prepare as follows Figure 4 , 7 The foam dispensing container 1 is shown. The various porous materials in the foam dispensing container 1 and the arc-shaped bends of the connecting flow path that is connected to the dispensing outlet of the foam dispensing device and the flow path of the pump core are changed in the manner shown in Tables 6 to 10.

[0240] Next, each liquid composition was prepared according to the combinations and proportions shown in Table 5. Then, the prepared liquid compositions were filled into foam dispensing containers to obtain the foam dispensing containers of Examples 18-28 and Comparative Example 2. In addition, the values ​​of each component in the table are mass percentages relative to the total mass of the liquid composition and are values ​​based on the active ingredient.

[0241] The following performance evaluations were performed using the foam dispensing containers obtained in the various embodiments and comparative examples.

[0242] <Evaluation of foam quality>

[0243] By pressing the foam dispensing containers of Examples 18-28 and Comparative Example 2 three times, foam of the liquid composition was dispensing from the dispensing port of the foam dispensing container, and the foam was observed visually. Then, the foam quality was evaluated based on the following evaluation criteria, and the results are shown in Tables 6-10 below.

[0244] 6: The foam is very dense and rich.

[0245] 5: The foam is dense and rich.

[0246] 4: The foam is slightly coarse.

[0247] 3: The foam is slightly coarse, with a small number of larger air bubbles.

[0248] 2: The foam is slightly coarse, with many large air bubbles.

[0249] 1: The foam is coarse and contains many large air bubbles.

[0250] <Evaluation of Blockage>

[0251] Each foam ejection container was placed in a constant temperature chamber set at 40°C. The foam ejection operation was performed once a day. The presence of blockage was evaluated based on the following evaluation criteria when the foam was ejected for the 90th time. The short-term blockage evaluation results were obtained and are shown in Tables 6 to 10 below.

[0252] Each foam ejection container was left to stand in a constant temperature chamber set at 40°C. The foam ejection operation was performed once a week. The presence of blockage was evaluated on the 12th foam ejection operation based on the following evaluation criteria. The results of the long-term blockage evaluation were obtained and are shown in Tables 6 to 10 below.

[0253] 5. The pump operates smoothly when pressed, with no change in feel when pressing down (completely free of blockages).

[0254] 4. The pump is easy to press, but the pressure feels slightly heavier when pressing down (slight blockage).

[0255] 3: The pump feels slightly stiff when pressed, and the pressure feels heavier when pressing down (if the blockage is minor).

[0256] 2: The pump feels stiff when pressed, and the pressure feels noticeably heavier when pressing down (significant blockage).

[0257] 1. The pump feels stiff when pressed, and pressing down feels noticeably harder (significant blockage).

[0258] <Assessment by pressure>

[0259] Each foam dispensing container was placed in a constant temperature chamber set at 25℃. A push-pull force gauge (SF-100, Aipu Measurement Instrument Co., Ltd.) was used to press the foam dispensing container at a speed of 500 mm / min, with a pressing stroke of 15 mm. The pressure reading on the force gauge was then recorded to obtain the specific pressing force (unit: kgf). The results are shown in Tables 6-10 below. A pressing force of 3.5 kgf was used as the evaluation standard; a force less than 3.5 kgf indicates an improvement effect.

[0260] [Table 5]

[0261]

[0262] *14: Product Name: ETHANOL (95%), Manufacturer: Taicang Xintai, Active Ingredient Content: 95%

[0263] [Table 6]

[0264]

[0265]

[0266] As shown in Table 6 above, by setting the corner of the connecting flow path that connects to the outlet of the foam dispensing device and to the flow path of the pump core as a bend instead of a right angle, the pressing pressure can be effectively reduced.

[0267] [Table 7]

[0268]

[0269] As shown in Table 7 above, by setting the corner of the connecting flow path that is connected to the outlet of the foam dispensing device and the flow path of the pump core as a bend, and by placing the porous material made of PET near the outlet of the foam dispensing container, it is possible to maintain a fine and uniform foam while suppressing the clogging of the pores of the porous material near the outlet, and effectively reduce the pressing pressure.

[0270] [Table 8]

[0271]

[0272] As shown in Table 8 above, by setting the radius of the inner bend to 1-5 mm and the radius of the outer bend to 5-16 mm, the pressing force can be reduced more effectively.

[0273] [Table 9]

[0274]

[0275] As shown in Table 9 above, by using a mesh size of 100 to 350 mesh for the porous material on the front end, it is possible to maintain a fine and uniform foam while suppressing the clogging of the pores of the porous material near the outlet.

[0276] [Table 10]

[0277]

[0278] As shown in Table 10 above, by setting the volume ratio of the air / liquid composition to 15 / 1, it is possible to maintain a fine and uniform foam while suppressing the clogging of the pores of the porous material near the outlet.

Claims

1. A foam dispensing container, wherein, The foam ejection container comprises: a container body for receiving a liquid composition, and a foam ejection device for mixing the liquid composition received in the container body with air and ejecting it in a foam form. The foam ejection device has a plurality of porous bodies through which the liquid composition passes when ejecting the liquid composition. The plurality of porous bodies include a front-side porous body disposed near the outlet of the foam dispensing device, and an inner-side porous body disposed upstream of the front-side porous body. The front-end porous body and the inner-end porous body have a plurality of filamentous portions that are spaced apart from each other and extend along a first direction, and a plurality of filamentous portions that are spaced apart from each other and extend along a second direction orthogonal to the first direction. The mesh size of the porous material on the front end side is lower than that of the porous material on the inner side. The porous front-end body is composed of polyethylene terephthalate. The foam dispensing device has an arc-shaped bend that defines a connecting flow path that communicates with the dispensing outlet and the pump core flow path. The bend includes an inner bend and an outer bend. The radius of the inner bend is 1~5mm, and the radius of the outer bend is 5~16mm.

2. The foam dispensing container as described in claim 1, wherein, The mesh size of the porous material on the front end side is 100~350 mesh.

3. The foam dispensing container as described in claim 1 or 2, wherein, The air and the liquid composition are discharged from the outlet at a volume ratio of 15 / 1 or more and 38 / 1 or less.

4. The foam dispensing container as described in claim 1 or 2, wherein, The tangents at the start and end of the bend intersect in a perpendicular manner.

5. A foam dispensing container, wherein, have: The foam dispensing device of the foam dispensing container according to any one of claims 1 to 4; and The container body containing the liquid composition, The liquid composition contains an alcohol with an IOB value of 0.55 to 5.0 as component (A).

6. The foam dispensing container as described in claim 5, wherein, The component (A) is selected from one or more of 1,2-hexanediol, diethylene glycol monobutyl ether and phenoxyethanol.

7. The foam dispensing container as described in claim 5 or 6, wherein, The liquid composition contains 2 to 50% by mass of component (A) relative to 100% by mass.

8. The foam dispensing container as described in claim 5 or 6, wherein, The liquid composition further contains 0.5 to 20% by mass of a foaming surfactant relative to 100% by mass of the liquid composition.

9. The foam dispensing container as described in claim 5 or 6, wherein, The liquid composition is a skin cleansing composition.

10. A foam dispensing container, wherein, The foam ejection container comprises: a container body for receiving a liquid composition, and a foam ejection device for mixing the liquid composition received in the container body with air and ejecting it in a foam form. The foam ejection device has a plurality of porous bodies through which the liquid composition passes when ejecting the liquid composition. The plurality of porous bodies include a front-side porous body disposed near the outlet of the foam dispensing device, and an inner-side porous body disposed upstream of the front-side porous body. The front-end porous body and the inner-end porous body have a plurality of filamentous portions that are spaced apart from each other and extend along a first direction, and a plurality of filamentous portions that are spaced apart from each other and extend along a second direction orthogonal to the first direction. The mesh size of the porous material on the front end side is lower than that of the porous material on the inner side. The foam dispensing device has an arc-shaped bend that defines a connecting flow path that communicates with the dispensing outlet of the foam dispensing device and with the pump core flow path. The bend includes an inner bend and an outer bend. The radius of the inner bend is 1~5mm, and the radius of the outer bend is 5~16mm.

11. The foam dispensing container as claimed in claim 10, wherein, The tangents at the start and end of the bend intersect in a perpendicular manner.

12. The foam dispensing container as described in claim 10 or 11, wherein, The air and the liquid composition are discharged from the outlet at a volume ratio of 15 / 1 or more and 38 / 1 or less.

13. The foam dispensing container as described in claim 10, wherein, The front-end porous body is composed of polyethylene terephthalate.

14. The foam dispensing container as described in claim 10 or 13, wherein, The mesh size of the porous material on the front end side is 100~350 mesh.

15. A foam dispensing container, wherein, have: The foam dispensing device of the foam dispensing container according to any one of claims 10-14; and The container body containing the liquid composition, The liquid composition contains an alcohol with an IOB value of 0.55 to 5.0 as component (A).

16. The foam dispensing container as claimed in claim 15, wherein, The component (A) is phenoxyethanol.

17. The foam dispensing container as described in claim 15 or 16, wherein, The liquid composition contains 2 to 50% by mass of component (A) relative to 100% by mass.

18. The foam dispensing container as described in claim 15 or 16, wherein, The liquid composition further contains 0.5 to 20% by mass of a foaming surfactant relative to 100% by mass of the liquid composition.

19. The foam dispensing container as described in claim 15 or 16, wherein, The liquid composition is a skin cleansing composition.

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