Patent Grant
12076736
This application is a National Stage entry under 35 U.S.C. § 371 of PCT/IB2021/052825, filed on Apr. 6, 2021, and claims priority to Chinese Patent Application Nos. 202010341859.4, filed on Apr. 27, 2020 and 202110260691.9, filed on Mar. 10, 2021. The entire contents of each are incorporated herein by reference.
The invention relates to a foam discharge container.
Conventionally, foam discharge containers for discharging liquid compositions such as hand soaps, facial cleansers, and body washes in a foam form have been widely used. Specifically, the composition accommodated in the foam discharge container is mixed with gas such as air to form foam, and the generated foam is discharged from the discharge port through the internal flow path of the foam discharge container.
Here, a porous body through which the foam passes is usually formed in the flow path of the foam, and the foam becomes fine by passing through the porous body. Generally, synthetic fibers such as nylon, polyethylene, and polypropylene are used as the porous body.
In this regard, a foam discharge container capable of obtaining more uniform and fine foam is sought. For example, Patent Document 1 discloses a foam ejection device in which two sheets of porous bodies with different mesh sizes are provided at the ejection port side, and a liquid agent in a foam form passes through the porous bodies, thereby ejecting a more uniform liquid agent in a foam form.
However, in the foam ejection device of Patent Document 1, if the device is left to stand for a long time or used intermittently for a long time after the foam is discharged, the foam remaining on the porous body at the discharge port side will dry and solidify, clogging the pores of the porous body, causing the pump to press poorly, making it difficult to discharge the liquid agent, and failing to stably obtain a uniform and fine foam.
In addition, in the foam ejection device of Patent Document 1, there is a problem that the pressing force when the foam ejection device is pressed to eject the foam is large.
The present invention has been made in view of the above-mentioned problems of the prior art. One object of the present invention is to provide a foam discharge container capable of maintaining a uniform and fine foam quality and preventing clogging due to drying and solidification of a liquid agent on a porous body. Moreover, another object of the present invention is to provide a foam discharge container which can reduce the pressing force at the time of pressing the foam discharge device.
In order to achieve the above-mentioned one object, the present inventors have conducted intensive studies, and as a result found that the above-mentioned problems can be solved by arranging a porous body made of a specific material in the vicinity of the discharge port.
Furthermore, the inventors also found that by using the liquid composition with specific composition in the above-mentioned foam discharge container, further and more excellent effects can be obtained.
In addition, in order to achieve the above-mentioned another object, the inventors have conducted in-depth research, and as a result found that the above problems can be solved by setting the corner which defines the connection flow path that communicates with the discharge port of the foam discharge device and communicates with the pump core flow path as a curve corner rather than a right angle.
Specifically, one aspect of the present invention relates to the following {circle around (1)} and {circle around (2)}.
{circle around (1)} A foam discharge container, wherein the foam discharge container comprises a container main body for accommodating a liquid composition, and a foam discharge device for mixing the liquid composition contained in the container main body with air and discharging it in a foam form,
the foam discharge device has a plurality of porous bodies through which the liquid composition passes when discharging the liquid composition,
the plurality of porous bodies comprise a tip side porous body arranged in the vicinity of the discharge port of the foam discharge device,
the tip side porous body is composed of polyethylene terephthalate (PET).
{circle around (2)} A foam discharge container, wherein comprising:
the foam discharge device of the foam discharge container described in the above 0; and
a container main body containing a liquid composition,
the liquid composition contains alcohols with IOB value of 0.55˜5.0 as component (A).
In addition, another aspect of the present invention relates to the following {circle around (3)} and {circle around (4)}.
{circle around (3)} A foam discharge container, wherein the foam discharge container comprises a container main body for accommodating a liquid composition; and a foam discharge device for mixing the liquid composition contained in the container main body with air and discharging it in a foam form,
the foam discharge device comprises an arc-shaped curve corner defining a connection flow path that communicates with the discharge port of the foam discharge device and communicates with the pump core flow path, the curve corner includes an inside curve corner and an outside curve corner.
{circle around (4)} A foam discharge container, wherein comprising:
the foam discharge device of the foam discharge container described in the above {circle around (3)}; and
a container main body containing a liquid composition,
the liquid composition contains alcohols with IOB value of 0.55˜5.0 as component (A).
Hereinafter, embodiments of the present invention are described in detail with reference to the accompanying drawings. In addition, in the specification and drawings, the same symbols are assigned to the structures that substantially have the same functions, and overlapping descriptions are omitted.
1. The overall structure of the foam discharge container
First, the structure of the foam discharge container 1 of this embodiment is demonstrated based on
In addition, in this specification, in order to understand easily, the direction toward the foam discharge device 20 from the container main body 10 mentioned later is called an upper direction. Here, since the user can take various postures when using the foam discharge container 1, the direction from the container main body 10 toward the foam discharge device 20 does not necessarily mean a vertically upward direction.
As shown in
The container main body 10 is a hollow-shaped member having a mouth at the upper end, and the foam discharge device 20 is arranged at the mouth. The above-mentioned liquid composition is accommodated in the inside of the container main body 10. The container main body 10 is composed of resin, for example.
The foam discharge device 20 discharges the liquid composition accommodated in the inside of the container main body 10 in a foam form. The foam discharge device 20 is composed of resin, for example.
Specifically, as shown in
Generally known pump mechanisms can be used as the pump mechanism. For example, as shown in
A mixing chamber 29 for mixing the liquid composition supplied from the piston for liquid 27b and the air supplied from the air chamber 26a is formed in the lower part of the discharge head 21. When the discharge head 21 is pressed, the piston for liquid 27b and the piston for air 26b are pushed down together with the linkage lever 28, and the liquid composition contained in the container main body 10 is supplied to the mixing chamber 29 by the piston for liquid 27b, and air is supplied to the mixing chamber 29 by the air chamber 26a. Thus, in the mixing chamber 29, the liquid composition is mixed with air, thereby forming foam.
The discharge head 21 comprises first cylindrical portion 21a that is inserted into the inner side of tubular portion 22 protruding upward from a radially central side of the cap portion 22 and extends in the up-down direction, second cylindrical portion 21b that covers the outer peripheral portion of tubular portion 22a of cap portion 22 and extends in the up-down direction, and nozzle portion 21c extends in the radial direction of first cylindrical portion 21a from the upper part of first cylindrical portion 21a.
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 discharge port 21d is formed at the tip of the nozzle portion 21c. In addition, the above-mentioned mixing chamber 29 is formed in the lower portion of the internal flow path 21a-1 of the first cylindrical portion 21a, and first porous body 23 and second porous body 24 are provided on the downstream (i.e., upper side) of the mixing chamber 29 of the internal flow path 21a-1 of the first cylindrical portion 21a in order from below. Thereby, after the foam formed in the mixing chamber 29 becomes fine by the first porous body 23 and the second porous body 24, it is sent to the internal flow path 21c-1 of nozzle portion 21c through the internal flow path 21a-1 of the first cylindrical portion 21a. Then, after the foam becomes finer by the third porous body 25 set in the vicinity of the discharge port 21d, the foam is discharged from the discharge port 21d. The first to third porous bodies 23 to 25 are film-like or plate-like members in which a plurality of through-holes are formed. Here, the third porous body 25 is a tip side porous body arranged in the vicinity of the discharge port 21d, and the first porous body 23 and the second porous body 24 are inner side porous bodies arranged on the upstream side (upstream side of the flow direction of foam) of the third porous body 25. Details of these porous bodies will be described later. In addition, in
2. Porous Body
Next, the porous body of the present embodiment will be described in detail based on
As described above, the third porous body 25 is a tip side porous body arranged in the vicinity of the discharge port 21d. Specifically, “the third porous body 25 is arranged in the vicinity of the discharge port 21d” means that the distance from the surface of the third porous body 25 at the side of discharge port 21d to the opening surface of the discharge port 21d is within a specific range, for example, the distance may be 20 mm or less.
As shown in
In the present embodiment, in the third porous body 25, the plurality of filamentary portions 25a and the plurality of filamentary portions 25b are arranged at equal intervals, respectively, and the interval between the adjacent filamentary portions 25a is substantially the same as that between the adjacent filamentary portions 25b, and thus each pore portion 25c has a substantially square shape with the same size. In addition, the interval between the adjacent filamentary portions 25a and the interval between the adjacent filamentary portions 25b may be different, whereby each pore portion 25c has a substantially rectangular shape with the same size.
Here, the third porous body 25, more specifically, the filamentous portion 25a and the filamentary portion 25b constituting the third porous body 25 are preferably composed of polyethylene terephthalate (PET). By arranging the third porous body 25 composed of PET in the vicinity of the discharge port 21d, it is possible to prevent the pores of the porous body from clogging due to drying and solidification of the liquid composition on the porous body while maintaining good foam quality. The reason for this is considered to be that the contact angle between the surface of the porous body composed of polyethylene terephthalate and water is large, and the hydrophobicity is strong, so that the liquid composition is not easily adhered to the porous body composed of polyethylene terephthalate with strong hydrophobicity, thereby playing effects on suppressing clogging of the porous body due to drying and solidification of the liquid composition on the porous body.
As such a porous body composed of PET, a porous body obtained by a usual method, specifically, a porous body obtained by weaving a plain weave or a twill weave from a PET monofilament by a flexible rapier loom can be used.
In addition, the third porous body may be composed of one or more pieces of porous body made of PET. From the viewpoint of preventing pores clogging of the third porous body 25, the third porous body is preferably composed of one piece of porous body made of PET.
From the viewpoint of preventing pores clogging of the third porous body 25, the mesh number of the third porous body 25 is preferably 100 mesh or more, and from the viewpoint of obtaining fine and rich foam, the mesh number of the third porous body 25 is preferably 350 mesh or less, more preferably 300 mesh or less, and further preferably 200 mesh or less.
In addition, the thickness of the third porous body 25 is not particularly limited, but may be about 50 to 120 μm from the viewpoint of both strength and suppression of clogging.
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 mesh shapes. The first porous body 23 and the second porous body 24 comprise a plurality of filamentary portions extending along the first direction with a certain interval from each other and a plurality of filamentary portions extending along the second direction orthogonal to the first direction with a certain interval from each other, these filamentary portions define a plurality of pore portions having a substantially rectangular shape. The shape of the pore portion is not necessarily limited to a rectangular shape, and may be various shapes such as a circle, an ellipse, a triangle, and a polygon.
The material constituting the first porous body 23 and the second porous body 24 is not particularly limited, and the same material as the third porous body 25 may be used, or a material which is different from the third porous body 25 and commonly used in conventional foam discharge containers may be used. For example, the first porous body 23 and the second porous body 24 may be composed of any material such as nylon, polyethylene, and polypropylene. Among them, it is preferable that the materials constituting the first porous body 23 and the second porous body 24 are the same as those of the third porous body 25 from the viewpoint of easiness of manufacture.
From the viewpoint of obtaining fine and rich foam, the mesh number of the first porous body 23 is preferably 200 mesh or more and 350 mesh or less, more preferably 200 mesh or more and 300 mesh or less, and further preferably 200 mesh or more and 250 mesh or less; the mesh number of the second porous body 24 is preferably 200 mesh or more and 350 mesh or less, more preferably 250 mesh or more and 350 mesh or less, and further preferably 300 mesh or more and 350 mesh or less.
Among the first to third porous bodies 23 to 25, the mesh number of the third porous body 25 is preferably smaller than that of the first porous body 23 and the second porous body 24 which are arranged on the upstream side of the third porous body 25. In this case, the foam of the liquid composition passes through the third porous body 25 again before being discharged from the discharge port, so that a finer and more uniform foam can be formed, and at the same time, by making the mesh number of the third porous body 25 smaller than that of first porous body 23 and the second porous body 24 upstream, it can help to suppress clogging of the porous body due to drying and solidification of the liquid composition on the porous body. In addition, the mesh number of each porous body is not limited to this example, the mesh number of the third porous body 25 may be the same as the mesh number of the first porous body 23 and the second porous body 24, and the mesh number of each porous body may also be arbitrarily arranged within the above range.
3. Liquid Composition
The following liquid compositions are preferably used in the foam discharge container of the present invention. Here, the components of the liquid composition preferably used in the foam discharge container of the present embodiment described above will be described.
From the viewpoint of good foamability, the liquid composition of the present invention preferably contains a generally used foamable surfactant. As the foamable surfactant, any one or two or more of anionic surfactants, amphoteric surfactants, and nonionic surfactants may be used.
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-sulfonated fatty acid salts, N-acyl amino acid type surfactants, phosphate monoester or diester type surfactants, sulfosuccinates, etc. Among them, saturated or unsaturated fatty acid salts, and alkyl or alkenyl ether carboxylates are preferred from the viewpoint of good foamability. Examples of the saturated or unsaturated fatty acid salts include straight chain or branched chain alkyl or alkenyl fatty acid salts having carbon atom number of 9-21, and more specifically, salts of lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, arachidic acid and behenic acid and the like. Furthermore, examples of these salts include alkali metals such as sodium and potassium; alkaline earth metals such as calcium and magnesium; ammonium, the ammonium obtained from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, and aminomethyl propanol; cations derived from alkaline amino acids such as arginine and lysine. Examples of the alkyl or alkenyl ether carboxylates include fatty alcohol polyether carboxylates having 10 to 18 carbon atoms, and more specifically, salts of laureth carboxylic acid, myreth carboxylic acid, pareth carboxylic acid, and the like. Examples of these salts include alkali metals such as sodium and potassium; alkaline earth metals such as calcium and magnesium; ammonium, the ammonium obtained from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, and aminomethyl propanol; cations derived from alkaline amino acids such as arginine and lysine.
Examples of the amphoteric surfactant include imidazoline-based, carbobetaine-based, amido betaine-based, sulphobetaine-based, hydroxysulfobetaine-based, and amidosulfobetaine-based surfactants. Among them, from the viewpoint of good foamability, hydroxysulfobetaines and sulphobetaines are preferred. Examples of hydroxysulfobetaines include coconut oil fatty acid hydroxysulfobetaine, lauryl hydroxysulfobetaine, tetradecyl hydroxysulfobetaine, and the like.
Examples of nonionic surfactant include polyethers, glycoside derivatives, ethoxylated oils and fats, alkyl alcohol amides, etc. Among them, glycoside derivatives are preferred from the viewpoint of good foamability. As a glycoside derivative, an alkyl glucoside, a sucrose fatty acid ester, etc. are mentioned.
From the viewpoint of obtaining good foamability and suppressing clogging of the third porous body 25, the content of the above-mentioned foamable surfactant in the liquid composition is preferably 0.5 mass % or more, and more preferably 2 mass % or more, further preferably 5 mass % or more, in addition, preferably 20 mass % or less, more preferably 15 mass % or less, further preferably 12 mass % or less.
Furthermore, the liquid composition used in the present invention preferably contains alcohols with IOB value of 0.55˜5.0 as component (A) from the viewpoint of dissolving the liquid composition remaining on the porous body 25, preventing clogging and not impairing the foam quality.
Examples of the alcohol of the component (A) include glycerin (IOB: 5), propylene glycol (IOB: 3.3), methyl gluceth-20 (IOB: 2.1), 1,2-hexanediol (IOB: 1.7), ethoxydiglycol (IOB: 1.6), PPG-9 diglyceryl ether (IOB: 0.9), diethylene glycol monobutyl ether (IOB: 0.9), phenoxyethanol (IOB: 0.8), polypropylene glycol-9 (IOB: 0.7), ethylhexyl glyceryl ether (IOB: 0.55), ethanol (IOB: 2.5), etc.
From the viewpoint of dissolving the liquid composition remaining on the third porous body 25 and suppressing clogging, the component (A) is preferably an alcohol having an IOB value of 5.0 or less.
Here, the IOB value represents the ratio (Inorganic Organic Balance) of inorganic value and organic value obtained according to organic conceptional diagram (Atsushi Fujita, Prediction of Organic Compounds and Organic Conceptional Diagram, Chemical Field Vol. 11, No. 10 (1957) P719-725), and is obtained by the following formula.
IOB value=inorganic value/organic value
From the viewpoint of achieving both good foam quality and suppression of clogging of the third porous body 25, 1,2-hexanediol (IOB: 1.7), diethylene glycol monobutyl ether (IOB: 0.9), phenoxyethanol (IOB: 0.8) are preferred.
The above-mentioned alcohols may be used alone or in combination of two or more.
The content of the component (A) in the liquid composition is preferably 2 mass % or more, and more preferably 4 mass % or more, further preferably 5 mass % or more, further more preferably 6 mass % or more, in addition, preferably 50 mass % or less, more preferably 48 mass % or less, further preferably 45 mass % or less, further more preferably 30 mass % mass % or less, from the viewpoint of suppressing pore clogging due to drying and solidification of the liquid composition on the third porous body 25 and the viewpoint of maintaining good foam quality.
The liquid composition can also contain other components within the range of not damaging the effect of the invention. The other components can be appropriately selected according to the use and purpose of the composition. Examples of the other ingredients include humectants, chelators, vitamins, antioxidants, preservatives, colorants, viscosity regulators, pH regulators, spices, etc. Any one or more of these can be arbitrarily added to the liquid composition.
In addition, the use of the liquid composition is not particularly limited. For example, skin cleanser compositions such as hand sanitizer, shower gel, facial cleanser; skin cosmetics such as lotion, beauty lotion; hair cosmetics such as shaving cosmetics, hair styling agents, shampoo, hair conditioner; dishwashing detergent and the like can be listed, among which, a skin cleaner composition is preferred.
4. Use of Foam Discharge Container
Next, the use of the foam discharge container 1 will be described. If the user presses the discharge head 21 of the foam discharge container 1, the liquid composition and air are supplied to the mixing chamber 29 through the pump mechanism. In the mixing chamber 29, the liquid composition is mixed with air, thereby generating foam. The generated foam is discharged from the discharge port 21d to the outside through the internal flow paths 21a-1 and 21c-1, and when the foam generated in the mixing chamber 29 passes through the internal flow path 21a-1, it passes through the first porous body 23 and the second porous body 24 in turn to become fine foam. Thereafter, the foam of the liquid composition passes through the third porous body 25 to become a more fine and uniform foam, which is discharged to the outside.
In addition, from the viewpoint of obtaining good foam quality, the foam is discharged from the discharge port 21d at a volume ratio of air to the liquid composition (air/liquid composition) of 15/1 or more, preferably 16/1 or more, further preferably 17/1 or more, further more preferably 20/1 or more. Furthermore, from the viewpoint of miniaturization of the foam discharge container 1, the foam is discharged from the discharge port 21d at a volume ratio of air to the liquid composition (air/liquid composition) of 38/1 or less, preferably 30/1 or less, further preferably 29/1 or less, further more preferably 26/1 or less.
In addition, the foam discharge container 1 in this embodiment comprises three porous bodies, but the number of porous bodies is not limited to three. As long as the number of porous bodies is two or more. In addition, the configuration of porous bodies is not limited to the example shown in
The foam discharge device 20A of the present embodiment is different from the foam discharge device 20 of the first embodiment in that the foam discharge device 20A does not comprise a tip side porous body but comprises an arc-shaped curve corner. The other structures of this embodiment are the same as those of the first embodiment, and therefore, the description thereof is omitted here.
As shown in
In addition, as shown in
In addition, in the case shown in
In addition, the arc radius is the arc radius obtained from the cross-sectional view passing through the center of the connection flow path 31. This cross-sectional view is a cross-sectional view passing through the center of the connection flow path 31 in the front-rear direction with the discharge direction of the discharge port 21d as the front direction and the opposite direction as the rear direction in the foam discharge device 20A.
In addition, the liquid composition used in this embodiment, the volume ratio of air to the liquid composition (air/liquid composition), and the use of the foam discharge container of this embodiment are the same as those in the above-mentioned first embodiment. Therefore, the description thereof is omitted here.
As shown in
The third porous body 25 has a mesh shape as in the above-described first embodiment. Specifically, the third porous body 25 comprises a plurality of filamentary portions 25a extending along the first direction with a certain interval from each other, and a plurality of filamentary portions 25b extending along the second direction orthogonal to the first direction with a certain interval from each other. A plurality of pore portions 25c having a substantially rectangular shape are defined by the plurality of filamentary portions 25a and the plurality of filamentary portions 25b. The shape of the pore portion 25c is not necessarily limited to a rectangular shape, and may be various shapes such as a circle, an ellipse, a triangle, and a polygon.
In the present embodiment, in the third porous body 25, the plurality of filamentary portions 25a and the plurality of filamentary portions 25b are arranged at equal intervals, respectively, and the interval between the adjacent filamentary portions 25a is the same as that between the adjacent filamentary portions 25b, and thus each pore portion 25c has a substantially square shape with the same size. In addition, the interval between the adjacent filamentary portions 25a and the interval between the adjacent filamentary portions 25b may be different, whereby each pore portion 25c has a substantially rectangular shape with the same size.
Here, the third porous body 25, more specifically, the filamentous portion 25a and the filamentary portion 25b constituting the third porous body 25 are preferably composed of polyethylene terephthalate (PET). By arranging the third porous body 25 composed of PET in the vicinity of the discharge port 21d, it is possible to suppress pores clogging of the porous body due to drying and solidification of the liquid composition on the porous body while maintaining good foam quality. The reason for this is considered to be that the contact angle between the surface of the porous body composed of polyethylene terephthalate and water is large, and the hydrophobicity is strong, so that the liquid composition is not easily adhered to the porous body composed of polyethylene terephthalate with strong hydrophobicity, thereby playing effects on suppressing clogging of the porous body due to drying and solidification of the liquid composition on the porous body.
As such a porous body composed of PET, a porous body obtained by a usual method, specifically, a porous body obtained by weaving a plain weave or a twill weave from a PET monofilament by a flexible rapier loom can be used.
In addition, the third porous body may be composed of one or more pieces of porous body made of PET. From the viewpoint of suppressing pores clogging of the third porous body 25, the third porous body is preferably composed of one piece of porous body made of PET.
From the viewpoint of preventing the pore clogging of the third porous body 25, the mesh number of the third porous body 25 is preferably 100 mesh or more. In addition, from the viewpoint of obtaining fine and rich foam, the mesh number of the third porous body 25 is preferably 350 mesh or less, more preferably 300 mesh or less, and further preferably 200 mesh or less.
In addition, the thickness of the third porous body 25 is not particularly limited, and can be 50-120 μm or so, from the viewpoint of considering both strength and suppression of clogging.
In addition, the liquid composition used in this variation, the volume ratio of air to liquid composition (air/liquid composition), and the use of foam discharge container in this variation are the same as those in the first embodiment, so the description is omitted here.
Regarding the above-mentioned embodiments, the present invention further discloses the following foam discharge containers.
<1> A foam discharge container, wherein the foam discharge container comprises a container main body for accommodating a liquid composition, and a foam discharge device for mixing the liquid composition contained in the container main body with air and discharging it in a foam form, the foam discharge device comprises a plurality of porous bodies through which the liquid composition passes when discharging the liquid composition, the plurality of porous bodies comprise a tip side porous body arranged in the vicinity of the discharge port of the foam discharge device, the tip side porous body is composed of polyethylene terephthalate (PET).
<2> The foam discharge container according to the above <1>, wherein the tip side porous body has a mesh shape.
<3> The foam discharge container according to the above <1> or <2>, wherein the tip side porous body is obtained by weaving a plain weave or a twill weave from a PET monofilament by a flexible rapier loom.
<4> The foam discharge container according to any one of the above <1> to <3>, wherein the tip side porous body is composed of one piece or more pieces of porous bodies made of PET, preferably composed of one piece of porous body made of PET.
<5> The foam discharge container according to any one of the above <1> to <4>, wherein the mesh number of the tip side porous body is preferably 100 mesh or more, and preferably 350 mesh or less, and more preferably 300 mesh or less, further preferably 200 mesh or less.
<6> The foam discharge container according to any one of the above <1> to <5>, wherein the thickness of the tip side porous body is 50 to 120 μm.
<7> The foam discharge container according to any one of the above <1> to <6>, wherein the plurality of porous bodies comprise an inner side porous body arranged on the upstream side of the tip side porous body.
<8> The foam discharge container according to the above <7>, wherein the material of the inner side porous body is the same as or different from the material of the tip side porous body, and it is preferably composed of the same material as the material of the tip side porous body.
<9> The foam discharge container according to the above <7> or <8>, wherein the number of the inner side porous body is one or two or more, preferably two or more, and more preferably two.
<10> The foam discharge container according to any one of the above <7> to <9>, wherein in the case of that the inner side porous body is composed of a first inner side porous body and a second inner side porous body, the mesh number of the first inner side porous body is preferably 200 mesh or more and 350 mesh or less, more preferably 200 mesh or more and 300 mesh or less, further preferably 200 mesh or more and 250 mesh or less; the mesh number of the second inner side porous body is preferably 200 mesh or more and 350 mesh or less, more preferably 250 mesh or more and 350 mesh or less, and further preferably 300 mesh or more and 350 mesh or less.
<11> The foam discharge container according to any one of the above <1> to <10>, wherein the foam is discharged from the discharge port 21d at a volume ratio of the air to the liquid composition (air/liquid composition) of 15/1 or more, preferably 16/1 or more, more preferably 17/1 or more, further more preferably 20/1 or more. Furthermore, the foam is discharged from the discharge port 21d at a volume ratio of the air to the liquid composition (air/liquid composition) of 38/1 or less, preferably 30/1 or less, more preferably 29/1 or less, further more preferably 26/1 or less.
<12> The foam discharge container according to any one of the above <1> to <11>, wherein the foam discharge device preferably comprises an arc-shaped curve corner defining a connection flow path that communicates with the discharge port and communicates with the pump core flow path, the curve corner includes an inside curve corner and an outside curve corner.
<13> The foam discharge container according to the above <12>, wherein the tangent of the starting point and the tangent of the ending point of the curve corner preferably intersect in a vertical manner.
<14> The foam discharge container according to the above <12> or <13>, wherein the arc radius of the inside curve corner is preferably 1 to 5 mm, and the arc radius of the outside curve corner is preferably 5 to 16 mm.
<15> A foam discharge container, wherein, comprising:
the foam discharge device of the foam discharge container according to any one of the above <1> to <14>; and
the container main body containing the liquid composition, the liquid composition contains alcohols with IOB value of 0.55˜5.0 as component (A).
<16> The foam discharge container as described in the above <15>, wherein the component (A) is one or more selected from the group consisting of glycerine, propylene glycol, methyl gluceth-20, 1,2-hexanediol, ethoxydiglycol, PPG-9 diglyceryl ether, diethylene glycol monobutyl ether, phenoxyethanol, polypropylene glycol-9, ethylhexyl glyceryl ether and ethanol, preferably one or more selected from alcohols with an IOB value of 5.0 or less, more preferably one or more selected from the group consisting of 1,2-hexanediol, diethylene glycol monobutyl ether and phenoxyethanol.
<17> The foam discharge container described in the above <15> or <16>, wherein the content of the component (A) in the liquid composition is preferably 2 mass % or more, more preferably 4 mass % or more, further preferably 5 mass % or more, further more preferably 6 mass % or more, in addition, preferably 50 mass % or less, more preferably 48 mass % or less, further preferably 45 mass % or less, further more preferably 30 mass % or less.
<18> The foam discharge container described in any one of the above <15> to <17>, wherein the liquid composition preferably contains a foamable surfactant, more preferably one or more selected from the group consisting of anionic surfactants, amphoteric surfactants, and non-ionic surfactants.
<19> The foam discharge container according to the above <18>, wherein the anionic surfactant is preferably 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-sulfonated fatty acid salt, N-acyl amino acid surfactant, phosphate monoester or diester surfactant, sulfosuccinate ester salt, more preferably saturated or unsaturated fatty acid salt, alkyl or alkenyl ether carboxylate, further preferably straight chain or branched chain alkyl or alkenyl fatty acid salts having carbon atom number of 9-21, fatty alcohol polyether carboxylate having carbon atom number of 10-18, further more preferably salts of lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, arachidic acid and behenic acid; salts of laureth carboxylic acid, myreth carboxylic acid, pareth carboxylic acid.
<20> The foam discharge container according to the above <18>, wherein the amphoteric surfactant is preferably imidazoline-based, carbobetaine-based, amido betaine-based, sulphobetaine-based, hydroxysulfobetaine-based, amidosulfobetaine-based surfactants, more preferably hydroxysulfobetaine-based, sulphobetaine-based, and further preferably coconut oil fatty acid hydroxysulfobetaine, lauryl hydroxysulfobetaine, tetradecyl hydroxysulfobetaine.
<21> The foam discharge container according to the above <18>, wherein the nonionic surfactant is preferably polyethers, glycoside derivatives, ethoxylated oils and fats, and alkyl alcohol amides, more preferably glycoside derivatives, and further preferably alkyl glucosides and sucrose fatty acid esters.
<22> The foam discharge container according to any one of the above <18> to <21>, wherein the content of the foamable surfactant in the liquid composition is preferably 0.5 mass % or more, and more preferably 2 mass % or more, further preferably 5 mass % or more, in addition, preferably 20 mass % or less, more preferably 15 mass % or less, further preferably 12 mass % or less.
<23> The foam discharge container according to any one of the above <15> to <22>, wherein the liquid composition is preferably a skin cleanser composition, a skin cosmetic, a hair cosmetic, or a dishwashing detergent, more preferably a skin cleanser composition.
In addition to the above, the present invention further discloses the following foam discharge containers regarding the above-mentioned embodiments.
[1] A foam discharge container, wherein the foam discharge container comprising: a container main body for accommodating a liquid composition, and a foam discharge device for mixing the liquid composition contained in the container main body with air and discharging it in a foam form,
The foam discharge device comprises an arc-shaped curve corner defining a connection flow path that communicates with the discharge port of the foam discharge device and communicates with the pump core flow path,
The curve corner includes an inside curve corner and an outside curve corner.
[2] The foam discharge container according to the above [1], wherein the tangent of the starting point and the tangent of the ending point of the curve corner intersect in a vertical manner.
[3] The foam discharge container according to the above [1] or [2], wherein the arc radius of the inside curve corner is 1 to 5 mm, and the arc radius of the outside curve corner is 5 to 16 mm.
[4] The foam discharge container according to any one of the above [1] to [3], wherein a tip side porous body is provided in the vicinity of the discharge port of the foam discharge device.
[5] The foam discharge container according to the above [4], wherein the tip side porous body has a mesh shape.
[6] The foam discharge container according to the above [4] or [5], wherein the tip side porous body is obtained by weaving a plain weave or a twill weave from a PET monofilament by a flexible rapier loom.
[7] The foam discharge container according to any one of the above [4] to [6], wherein the tip side porous body is composed of one piece or more pieces of porous bodies made of PET, preferably composed of one piece of porous body made of PET.
[8] The foam discharge container according to any one of the above [4] to [7], wherein the mesh number of the tip side porous body is preferably 100 mesh or more, and preferably 350 mesh or less, and more preferably 300 mesh or less, and further preferably 200 mesh or less.
[9] The foam discharge container according to any one of the above [4] to [8], wherein the thickness of the tip side porous body is 50 to 120 μm.
[10] The foam discharge container according to any one of the above [4] to [9], wherein the plurality of porous bodies comprise an inner side porous body arranged on the upstream side of the tip side porous body.
[11] The foam discharge container according to the above [10], wherein the material of the inner side porous body is the same as or different from the material of the tip side porous body, and it is preferably composed of the same material as the material of the tip side porous body.
[12] The foam discharge container according to the above [10] or [11], wherein the number of the inner side porous body is one or two or more, preferably two or more, and more preferably two.
[13] The foam discharge container according to any one of the above [10] to [12], wherein in the case of that the inner side porous body is composed of a first inner side porous body and a second inner side porous body, the mesh number of the first inner side porous body is preferably 200 mesh or more and 350 mesh or less, more preferably 200 mesh or more and 300 mesh or less, further preferably 200 mesh or more and 250 mesh or less; the mesh number of the second inner side porous body is preferably 200 mesh or more and 350 mesh or less, more preferably 250 mesh or more and 350 mesh or less, and further preferably 300 mesh or more and 350 mesh or less.
[14] The foam discharge container according to any one of the above [1] to [13], wherein the foam is discharged from the discharge port 21d at the volume ratio of the air to the liquid composition (air/liquid composition) of 15/1 or more, preferably 16/1 or more, further preferably 17/1 or more, and further more preferably 20/1 or more.
Furthermore, the foam is discharged from the discharge port 21d at the volume ratio of the air to the liquid composition (air/liquid composition) of 38/1 or less, preferably 30/1 or less, more preferably 29/1 or less, further more preferably 26/1 or less.
[15] A foam discharge container, comprising:
the foam discharge device of the foam discharge container according to any one of the above [1] to [14]; and
a container main body containing a liquid composition,
The liquid composition contains alcohols with IOB value of 0.55˜5.0 as component (A).
[16] The foam discharge container according to the above [15], wherein the component (A) is one or more selected from the group consisting of glycerine, propylene glycol, methyl gluceth-20, 1,2-hexanediol, ethoxydiglycol, PPG-9 diglyceryl ether, diethylene glycol monobutyl ether, phenoxyethanol, polypropylene glycol-9, ethylhexyl glyceryl ether and ethanol, preferably one or more selected from alcohols with an IOB value of 5.0 or less, more preferably one or more selected from the group consisting of 1,2-hexanediol, diethylene glycol monobutyl ether and phenoxyethanol.
[17] The foam discharge container according to the above [15] or [16], wherein the content of the component (A) in the liquid composition is preferably 2 mass % or more, more preferably 4 mass % or more, further preferably 5 mass % or more, further more preferably 6 mass % or more, in addition, preferably 50 mass % or less, more preferably 48 mass % or less, further preferably 45 mass % or less, further more preferably 30 mass % or less.
[18] The foam discharge container according to any one of the above [15] to [17], wherein the liquid composition preferably contains a foamable surfactant, more preferably one or more selected from the group consisting of anionic surfactants, amphoteric surfactants, and non-ionic surfactants.
[19] The foam discharge container according to the above [18], wherein the anionic surfactant is preferably 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-sulfonated fatty acid salt, N-acyl amino acid surfactant, phosphate monoester or diester surfactant, sulfonated succinate salt, more preferably saturated or unsaturated fatty acid salt, alkyl or alkenyl ether carboxylate, further preferably straight chain or branched chain alkyl or alkenyl fatty acid salts having carbon atom number of 9-21, fatty alcohol polyether carboxylate having carbon atom number of 10-18, further more preferably salts of lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, arachidic acid and behenic acid; salts of laureth carboxylic acid, myreth carboxylic acid, pareth carboxylic acid.
[20] The foam discharge container according to the above [18], wherein the amphoteric surfactant is preferably imidazoline-based, carbobetaine-based, amido betaine-based, sulphobetaine-based, hydroxysulfobetaine-based, amidosulfobetaine-based surfactants, more preferably hydroxysulfobetaine-based, sulphobetaine-based, and further preferably coconut oil fatty acid hydroxysulfobetaine, lauryl hydroxysulfobetaine, tetradecyl hydroxysulfobetaine.
[21] The foam discharge container according to the above [18], wherein the nonionic surfactant is preferably polyethers, glycoside derivatives, ethoxylated oils and fats, and alkyl alcohol amides, more preferably glycoside derivatives, and further preferably alkyl glucosides and sucrose fatty acid esters.
[22] The foam discharge container according to any one of the above [18] to [21], wherein the content of the foamable surfactant in the liquid composition is preferably 0.5 mass % or more, and more preferably 2 mass % or more, further preferably 5 mass % or more, in addition, preferably 20 mass % or less, more preferably 15 mass % or less, further preferably 12 mass % or less.
[23] The foam discharge container according to any one of the above [15] to [22], wherein the liquid composition is preferably a skin cleanser composition, a skin cosmetic, a hair cosmetic, or a dishwashing detergent, more preferably a skin cleanser composition.
Hereinafter, the present invention will be described in more detail by way of examples. The examples are merely illustrative of the present invention, and are not intended to be limiting in any way.
First, a foam discharge container 1 as shown in
Next, each liquid composition was prepared according to the combination and compound ratio shown in Table 1. Then, the foam discharge containers of Examples 1 to 17 and Comparative Example 1 were produced by filling the foam discharge container 1 with each of the obtained liquid compositions. In addition, the numerical value of each component in the table is a mass % with respect to the total mass of a liquid composition, and is a value as an active ingredient.
The following performance evaluations were performed using the foam discharge containers obtained in the Examples and Comparative Examples.
<Evaluation of Foam Quality>
By pressing the foam discharge containers of Examples 1 to 17 and Comparative Example 1 three times, the foam of the liquid composition was discharged from the discharge port of the foam discharge container, and the state of the foam was observed visually. Then, the foam quality was evaluated based on the following evaluation criteria, and the obtained results are shown in Tables 2 to 4 below.
<Evaluation of Clogging>
Each foam discharge container was left still in a constant temperature room set at 40° C., the operation of pressing to discharge the foam was performed once a day, and the evaluation result of short-term clogging property was obtained by evaluating the presence or absence of clogging at the 90th time of pressing to discharge the foam based on the following evaluation criteria and the obtained results are shown in Tables 2 to 4 below.
Each foam discharge container was left still in a constant temperature room set at 40° C., the operation of pressing to discharge the foam was performed once a week, and the evaluation result of long-term clogging property was obtained by evaluating the presence or absence of clogging at the 12th time of pressing to discharge the foam based on the following evaluation criteria and the obtained results are shown in Tables 2 to 4 below.
From Tables 2 to 4 above, it can be seen that by arranging the porous body composed of PET in the vicinity of the discharge port of the foam discharge container, compared with the case of arranging the porous body composed of nylon in the vicinity of the discharge port of the foam discharge container, the fine and uniform foam can be maintained while suppressing pores clogging of the porous body in the vicinity of the discharge port.
First, the foam discharge container 1 shown in
Next, each liquid composition was prepared according to the combination and compound ratio shown in Table 5. Then, the foam discharge containers of Examples 18 to 28 and Comparative Example 2 were produced by filling the foam discharge container with each of the obtained liquid compositions. In addition, the numerical value of each component in the table is a mass % with respect to the total mass of a liquid composition, and is a value as an active ingredient.
The following performance evaluations were performed using the foam discharge containers obtained in the Examples and Comparative Examples.
<Evaluation of Foam Quality>
By pressing the foam discharge containers of Examples 18 to 28 and Comparative Example 2 three times, the foam of the liquid composition was discharged from the discharge port of the foam discharge container, and the state of the foam was observed visually. Then, the foam quality was evaluated based on the following evaluation criteria, and the obtained results are shown in Tables 6 to 10 below.
<Evaluation of Clogging>
Each foam discharge container was left still in a constant temperature room set at 40° C., the operation of pressing to discharge the foam was performed once a day, and the evaluation result of short-term clogging property was obtained by evaluating the presence or absence of clogging at the 90th time of pressing to discharge the foam based on the following evaluation criteria and the obtained results are shown in Tables 6 to 10 below.
Each foam discharge container was left still in a constant temperature room set at 40° C., the operation of pressing to discharge the foam was performed once a week, and the evaluation result of long-term clogging property was obtained by evaluating the presence or absence of clogging at the 12th time of pressing to discharge the foam based on the following evaluation criteria and the obtained results are shown in Tables 6 to 10 below.
<Evaluation of Pressing Force>
Each foam discharge container was left still in a constant temperature room set at 25° C., and was pressed at a speed of 500 mm/min with a push-pull gauge (SF-100, Aipu Measuring Instrument Co., Ltd.), and the pressing stroke was 15 mm. The specific value of the pressing force (unit: kgf) was obtained by reading the value on the push-pull force meter, and the obtained results are shown in the following Tables 6 to 10. The evaluation standard of pressing force is 3.5 kgf, and the improvement effect is achieved if it is smaller than 3.5 kgf.
As can be seen from Table 6 above, the pressing force can be effectively reduced by making the corner defining the connection flow path which communicates with the discharge port of the foam discharge device and communicates with the pump core flow path as a curve corner rather than a right angle.
As can be seen from Table 7 above, the corner defining the connection flow path that communicates with the discharge port of the foam discharge device and communicates with the pump core flow path is setted as a curve corner, and the porous body made of PET is arranged in the vicinity of the discharge port of the foam discharge container, pores clogging of the porous body in the vicinity of the discharge port can be suppressed, and the pressing force can be effectively reduced while maintaining fine and uniform foam quality.
From Table 8 above, it can be seen that the pressing force can be reduced more effectively by setting the arc radius of the inside curve corner to be 1 to 5 mm and the arc radius of the outside curve corner to be 5 to 16 mm.
As can be seen from Table 9 above, by setting the mesh number of the tip side porous body to 100 to 350 mesh, it is possible to suppress pores clogging of the porous body in the vicinity of the discharge port while maintaining a fine and uniform foam quality.
As can be seen from Table 10 above, by setting the volume ratio of the air/liquid composition to 15/1, pores clogging of the porous body in the vicinity of the discharge port can be suppressed while maintaining a fine and uniform foam quality.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010341859.4 | Apr 2020 | CN | national |
| 202110260691.9 | Mar 2021 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/IB2021/052825 | 4/6/2021 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2021/220081 | 11/4/2021 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5271530 | Uehira et al. | Dec 1993 | A |
| 5570819 | Uehira et al. | Nov 1996 | A |
| 5605259 | Clawson | Feb 1997 | A |
| 6082586 | Banks | Jul 2000 | A |
| 20060229227 | Goldman et al. | Oct 2006 | A1 |
| 20070040048 | Poizot | Feb 2007 | A1 |
| 20090255961 | Greer, Jr. | Oct 2009 | A1 |
| 20090317270 | Reynolds | Dec 2009 | A1 |
| 20120228332 | Huang | Sep 2012 | A1 |
| 20150034680 | Babikian | Feb 2015 | A1 |
| Number | Date | Country |
|---|---|---|
| 107107078 | Aug 2017 | CN |
| 5-40159 | May 1993 | JP |
| 07-215352 | Aug 1995 | JP |
| 07215353 | Aug 1995 | JP |
| 3163646 | Oct 2010 | JP |
| 2017-190141 | Oct 2017 | JP |
| 2018-83781 | May 2018 | JP |
| 202005718 | Feb 2020 | TW |
| WO 9208657 | May 1992 | WO |
| Entry |
|---|
| International Search Report & Written Opinion mailed on Jun. 22, 2021 in PCT/IB2021/052825 filed on Apr. 6, 2021 (6 pages). |
| Extended European Search Report issued in European Patent Application No. 21796184.6 on Apr. 23, 2024. |
| Number | Date | Country | |
|---|---|---|---|
| 20230166277 A1 | Jun 2023 | US |
