JP2012017262A - Method for producing cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a cosmetic, by which the cosmetic high in the stability of bubbles, effectively preventing the unification of the bubbles, having uniformity, and hardly causing a color tone change caused by the coagulation of a color ingredient can be produced, and to provide the method by which the cosmetic giving good make-up finishes and giving the good sense of use can be produced.SOLUTION: The method for producing the cosmetic, including mixing formulation raw materials containing one or more oily ingredients solid at 25°C under heating to produce a fluid, and passing the obtained fluid through a continuous mixing device to cool the cosmetic, is characterized by continuously feeding a gas or a gas-liquid dispersion containing the gas into a continuous mixing device to mix the fluid at a temperature where the temperature of the fluid is equal to or higher than the solidification-starting temperature of the oily ingredient, and simultaneously cooling the fluid in the continuous mixing device.

Description

  The present invention relates to a method for producing a cosmetic containing an oily component such as wax.

Regarding the production of cosmetics, the present applicant has previously proposed a technique in which an aqueous component is added to a heat-melted oily component to emulsify, and then cooled with a propeller and then cooled using a homomixer ( Patent Document 1). According to this method, since the compounding quantity of oil components, such as wax contained in cosmetics, can be raised, there exists an advantage that makeup sustainability improves.
However, there is a demand for further improving the appearance color, feeling of use, storage stability, and the like of cosmetics by more uniformly emulsifying.
In response to these requirements, we developed a cosmetic technology using a vibratory stirring device and filed a patent application (see Patent Document 2).

  Apart from this technique, a technique relating to a method for producing a sealing material in which a large number of closed cells are uniformly dispersed in a sealing material composition using a vibration stirrer is known (see Patent Document 3). However, this document does not describe a solid oily component and does not describe any method for producing cosmetics. The vibratory stirrer described in the same document is a mixer that uniformly disperses a large number of closed cells in the sealing material composition, and is not a stirrer that cools at the same time as mixing.

JP 2007-176825 A JP 2001-214212 A Japanese Patent Laid-Open No. 2001-132646

  The present invention provides a method capable of producing a cosmetic material in which various performances are further improved as compared with the above-described prior art.

The present invention is a cosmetic which cools a fluid obtained by mixing a raw material containing one or more solid oily components at 25 ° C. under heating to form a fluid, and passing the fluid obtained through a continuous mixer. A method of manufacturing the charge,
A gas or a gas-liquid dispersion containing the gas is continuously supplied into the continuous mixing apparatus, and the fluid and the fluid are mixed while the temperature of the fluid is equal to or higher than the solidification start temperature of the oil component. The present invention provides a method for producing a cosmetic that cools the body in the continuous mixing apparatus.

  According to the present invention, it is possible to obtain a uniform cosmetic with high stability of bubbles, effectively preventing coalescence thereof. In addition, it is possible to obtain a cosmetic material that has a good makeup finish and an excellent usability.

It is the schematic which shows the suitable apparatus which enforces the manufacturing method of this invention. It is a schematic diagram of the longitudinal cross-section of the vibration type stirring and mixing apparatus shown in FIG. It is a principal part enlarged view of the stirring body in the vibration type stirring mixing apparatus shown in FIG. It is the schematic which shows another suitable apparatus which enforces the manufacturing method of this invention. It is a microscope image of the cosmetics obtained in Example 1-1.

  The present invention will be described below based on a preferred first embodiment with reference to the drawings. FIG. 1 shows a schematic view of an apparatus suitably used in the method of the present invention. The apparatus 10A shown in FIG. 1 is roughly classified into a gas or a gas-liquid dispersion heating and mixing unit 15, a fluid-containing heating and mixing unit 20 including an oil component, and a cooling unit 30. The heating and mixing unit 15 is filled with a second blending raw material including a gas component described later among the target blending raw materials of the cosmetic, and the mixed raw material is heated and mixed to gas or gas-liquid dispersion containing gas It is used to imitate the body. The heating and mixing unit 20 is filled with a first blending raw material such as an oily component among the blended raw materials of the intended cosmetic, and the blended raw material is mixed under heating to form a fluid containing the oily component. It is used for this purpose. The cooling unit 30 of the first embodiment is configured to mix the fluid obtained in the heating and mixing unit 20 with the gas continuously supplied into the cooling unit 30 or a gas-liquid dispersion containing gas. Is cooled in the cooling unit 30 and used to obtain a desired cosmetic.

  The heating and mixing unit 15 of gas or gas-liquid dispersion containing gas includes a mixing device 16 and a metering pump 17. The mixing device 16 includes stirring means (not shown) such as a stirring blade for mixing and stirring the second blended raw material filled therein. Further, the mixing device 16 includes a heating means (not shown) for heating the gas filled therein or the gas-liquid dispersion containing the gas to a predetermined temperature. Connected to the bottom of the mixing device 16 is a pipe 18 for taking out gas or a gas-liquid dispersion containing gas obtained by mixing and stirring by the device 16. The pipe 18 is connected to a metering pump 17 such as a Mono pump. The metering pump 17 is used for metering and supplying gas or a gas-liquid dispersion containing gas to the cooling unit 30 through the pipe 19.

  The fluid heating and mixing unit 20 including the oil component includes a mixing tank 21. The mixing tank 21 is heated or cooled by a jacket 22 that covers the mixing tank 21 and is adjusted to a predetermined temperature. A stirring blade 23 is installed in the mixing tank 21. The stirring blade 23 is connected to a motor 25 installed outside the mixing tank 21 via a shaft 24 and is rotatable. Connected to the bottom of the mixing tank 21 is a pipe 26 for taking out a fluid obtained by heating and mixing in the tank 21. The pipe 26 is connected to a metering pump 28 via a valve 27. The metering pump 28 is used for metering the fluid into the cooling unit 30 through the pipe 29. As the metering pump 28, the same pump as the pump 17 provided in the heating and mixing unit 15 of gas or gas-liquid dispersion containing gas is used.

  The cooling unit 30 of the first embodiment includes a vibration type stirring and mixing device 40 as a continuous mixing device. The vibration type stirring and mixing device 40 has a substantially cylindrical structure, and has a first inlet 31A connected to the pipe 29 and a second inlet 31B connected to the pipe 19 on one end side thereof. A discharge port 32 is provided on the end side. The discharge port 32 is connected to a discharge pipe 33. The second inflow port 31B is located on the downstream side (upper side in FIG. 1) than the first inflow port 31A. The fluid containing the oil component obtained in the heating and mixing unit 20 is continuously supplied into the vibration type stirring and mixing device 40 through the first inlet 31A. The “continuous supply” of the fluid mentioned here may be continuous as a whole process, and does not need to be completely continuous. Therefore, the case where the supply is intermittently performed for a certain period or irregularly, or the case where the supply is intermittently included is also included in the “continuous supply” in this specification. On the other hand, the gas obtained by the heating and mixing unit 15 or the gas-liquid dispersion containing the gas is continuously supplied into the vibrating stirring and mixing device 40 through the second inlet 31B. As used herein, “continuous supply” of gas or gas-liquid dispersion containing gas is the same as “continuous supply” of fluid, in the case of intermittently supplying for a certain period or irregularly, or intermittently supplying Is also included in the “continuous supply” in this specification. The fluid containing the oil component is cooled in the vibration stirring and mixing device 40 while being mixed in the vibration stirring and mixing device 40 with the gas or the gas-liquid dispersion containing the gas, and discharged through the discharge port 32. It is discharged from the end of the.

  The fluid containing the oily component is preferably cooled continuously while moving in the apparatus 40 while being mixed with the gas or the gas-liquid dispersion containing the gas in the vibration type stirring and mixing apparatus 40. In order to perform continuous cooling of the fluid, the vibrating stirring and mixing device 40 of the first embodiment has four jackets 34, 35, 36, and 37 from the inlet 31A side to the outlet 32 side. They are installed in order. Cooling water circulates in each jacket. The temperature of the cooling water can be appropriately set, and the fluid containing the oil component can be continuously cooled from the inlet 31A side to the outlet 32 side by these jackets. The cooling of the fluid does not need to be continuous, and the cooling process is not limited as long as the fluid is finally cooled while passing through the vibration type stirring and mixing device 40. Therefore, there may be a constant temperature state or a heated state during the passage of the fluid through the vibration type stirring and mixing device 40. Further, the cooling may be stepwise. However, it is preferable that the cooling of the fluid by the vibration type stirring and mixing device 40 is continuously performed from the viewpoint of the stability of the fluid. As a technique for that purpose, it is also preferable to attach a cooling device that can be controlled independently to the vibration type stirring and mixing device 40 and to combine a plurality of the cooling devices.

  FIG. 2 shows a schematic diagram of a longitudinal section of the vibration type stirring and mixing apparatus 40 of the first embodiment. The apparatus 40 includes a stirring body 44 including a drive shaft 42 and a stirring blade 43 attached to the drive shaft 42 in a tubular casing 41. The drive shaft 42 is configured to vibrate up and down along the axial direction by a vibrator 45a.

  The casing 41 has a tubular shape with a circular cross section, and a first inlet 31A is provided in the vicinity of the lower portion thereof. A second inflow port 31B is provided downstream of the first inflow port 31A (upper side in FIG. 2). A discharge port 32 is provided near the upper portion of the casing 41. The fluid containing the oil component flowing in from the first inlet 31A is cooled through the casing 41 while being mixed in the casing 41 with the gas flowing in from the second inlet 31B or the gas-liquid dispersion containing the gas. And discharged from the discharge port 32.

  In the casing 41, the above-described stirring body 44 is disposed. The drive shaft 42 of the stirring body 44 extends in the longitudinal direction (vertical direction) of the casing 41. The upper end of the drive shaft 42 is connected to the vibrator 45a through a joint 45b. The vibrator 45a includes a motor (not shown) and a known cam mechanism (not shown) connected to its output shaft. The cam mechanism includes a rotating part (not shown) and a swinging part (not shown). The rotating part is attached eccentrically with respect to the output shaft of the motor. The oscillating part is oscillated by the eccentric rotation of the rotating part. Then, the swing of the swing portion is transmitted to the drive shaft 42 as vertical vibration.

  A plurality of annular partition portions 46 are provided on the inner wall of the casing 41. All of the partition portions 46 have the same shape, and protrude in the horizontal direction from the inner wall of the casing 41. The drive shaft 42 is inserted into a circular hole formed in the center of the partition 46. The diameter of this circular hole is larger than the diameter of the drive shaft 42. A plurality of mixing chambers 47 are defined in the casing 41 by two adjacent partitions. The mixing chamber 47 is arranged in series along the longitudinal direction (vertical direction) of the casing 41.

  3A and 3B are enlarged views of the main part of the stirring body 44. FIG. The stirrer 44 includes a drive shaft 42 and a stirring blade 43 spirally attached to the peripheral surface thereof. In the figure, the stirring blades 43 are attached in a spiral shape with three rounds. The stirring bodies 44 in this state are taken as a set, and the stirring bodies 44 are arranged in the mixing chambers 47 in the casing 41. Therefore, the number of sets of stirring bodies 44 is the same as the number of mixing chambers 47. In each set of stirring bodies 44, the spiral directions of the stirring blades 43 are the same.

  One or more apertures 48 and / or one or more notches 49 are provided in the stirring blades 43 in each set of stirring bodies 44. The opening 48 and the notch 49 are provided so that the formation positions of the stirring blades 43 adjacent to each other do not coincide with each other when the stirring body 44 is viewed from the axial direction of the drive shaft 42 (see FIG. 3A). It has been. The reason for this is to prevent the occurrence of a short circuit flow in the axial direction and enhance the stirring and mixing effect.

  As the vibration type stirring and mixing apparatus 40 having the above-described configuration, for example, the one described in JP-A-4-235729 can be used. Moreover, as the vibration type stirring and mixing device 40, for example, Vibro Mixer (registered trademark) manufactured by Chilling Industries Co., Ltd. may be mentioned.

  The production method of the cosmetic using the apparatus 10A having the above configuration will be described. First formulation containing at least one oily component that is solid at 25 ° C. (hereinafter, this oily component is also referred to as “solid fat”). The raw material is filled in the mixing tank 21. As the first compounding raw material, an appropriate one is used according to the specific use of the intended cosmetic. For example, as the first compounding raw material, an oily component that is liquid at 25 ° C., and a powder component such as a pigment and a glitter powder are used in addition to an oily component that is solid at 25 ° C. However, no gas is contained in the first blended raw material. When the filling of the first blended raw material is completed, the mixing tank 21 is heated to bring the solid fat contained in the first blended raw material into a molten state. The heating temperature can be appropriately set according to the melting point of the solid fat. Generally, it is preferable to set the temperature higher by about 10 ° C. than the melting point of the solid fat having the highest melting point. The solid fat is melted by heating, and the entire first blending raw material is melted to form a fluid containing an oily component. In this state, the inside of the mixing tank 21 is stirred by rotating the stirring blade 23, and the first blended raw material is sufficiently uniformly mixed and dispersed. The fluid containing the oily component can be an oily solution, a dispersion containing the oily component, an oil-in-water emulsion, or a water-in-oil emulsion, depending on the type of the first blending raw material.

  As an alternative method, mainly the oil component of the first compounding raw material is preliminarily dispersed in advance using a predispersing means (not shown) such as a homomixer or a disper, and then the predispersion obtained thereby is mixed. While filling into the tank 21, the remainder (for example, powder component) of the first blended raw material is filled into the tank 21, and both are heated and mixed in the tank 21 to obtain a fluid containing an oily component. May be.

  On the other hand, the 2nd compounding raw material is filled in the mixing device 16 in the heating and mixing unit 15 of the gas or gas-liquid dispersion containing gas, and uniformly mixed. As the second blending raw material, an appropriate one is used according to the specific use of the intended cosmetic. For example, in the second compounding raw material, in addition to gas, as components other than gas, for example, water (purified water) described later, water-soluble organic solvent, water-soluble inorganic metal salt, water-soluble polymer, surfactant, Liquid oily components and combinations of two or more thereof are used. When the filling of the second blending raw material is completed, the mixing device 16 is heated to heat the gas or the gas-liquid dispersion containing the gas to a predetermined temperature.

  The gas-liquid dispersion containing gas is obtained in the mixing device 16 by mixing the gas and the components of the second blending raw material other than the gas while heating as necessary. The gas-liquid dispersion containing gas is a state in which fine bubbles are apparently uniformly dispersed in the components of the second blending raw material other than gas, for example, liquid, paste-like, or A state like a whipped cream. The blending amount of each of these components is appropriately selected according to the specific use of the target cosmetic. The amount of gas in the gas-liquid dispersion is preferably 1% or more from the viewpoint of enhancing the gas-containing effect in the cosmetic, and preferably 70% or less from the viewpoint of enhancing the stability of the gas-liquid dispersion.

  In the manufacturing method using the apparatus 10A of the first embodiment, the components of the intended cosmetics are distributed to the first blended raw material and the second blended raw material, and each blended raw material is heated and mixed as described above. 20 and the heating and mixing unit 15 respectively. Or the component of the cosmetics made into object is distributed to the 1st mixing | blending raw material, the 2nd mixing | blending raw material, and the 3rd mixing | blending raw material, and the 1st and 2nd mixing | blending raw material is put into the heating mixing part 20 and the heating mixing part 15. While supplying each, the 3rd mixing | blending raw material can also be directly supplied in this apparatus 40 from the middle of the vibration type stirring mixing apparatus 40 so that it may mention later. As the third blending raw material, a heat-sensitive component is preferable as will be described later.

When the first blended raw material containing the oil component is sufficiently mixed in the heating and mixing unit 20 and reaches a predetermined temperature, the valve 27 attached to the bottom of the mixing tank 21 is opened and the fluid in the tank 21 is taken out. . The fluid is introduced into the metering pump 28, and a certain amount thereof is supplied to the vibration type stirring and mixing device 40. The metering pump 28 also serves as an extrusion pressure source for the fluid to pass through the vibration type stirring and mixing device 40. The superficial velocity of the fluid introduced into the vibration type stirring device 40 is preferably 5 to 120 hr ⁻¹ . The viscosity of the fluid introduced into the vibration type stirring device 40 is preferably 5 to 10000 mPa · s, particularly 10 to 1000 mPa · s at the introduced temperature.

Similarly, in the heating and mixing unit 15, when the second compounding raw material is sufficiently mixed, a valve (not shown) attached to the bottom of the mixing device 16 is opened, and the gas in the mixing device 16 or a gas-liquid containing gas is contained. Remove the dispersion. The gas or gas-liquid dispersion containing gas is introduced into the metering pump 17, and a certain amount thereof is supplied to the vibration type stirring and mixing device 40. When the second compounding raw material is only gas, the superficial velocity of the gas introduced into the vibration type stirring device 40 is preferably 0.1 to 100 hr ⁻¹ , and in the case of a gas-liquid dispersion containing gas In this case, the superficial velocity of the gas-liquid dispersion introduced into the vibration type stirring device 40 is preferably 0.5 to 300 hr ⁻¹ .

  In addition, although not shown in FIG. 1, when obtaining the fluid containing an oil-based component using the 1st mixing | blending raw material, the fluid obtained with the mixing tank 21 is directly supplied to the vibration type stirring and mixing apparatus 40. Instead, it may be supplied to the vibratory stirring and mixing device 40 after passing through a continuous dispersing device such as an in-line homomixer or milder. By using these apparatuses, it is possible to obtain a fluid in which the oil component is further finely dispersed.

  As described above, the four jackets 34, 35, 36, and 37 are attached to the vibration type agitation and mixing device 40 of the first embodiment, and cooling water of a predetermined temperature is circulated in each of the jackets so as to be oily. Heat exchange is performed for cooling the fluid containing the components. For example, hot water circulates in the jacket 34 and is maintained at about 90 ° C., and the jacket 35 is maintained at about 45 to 50 ° C. The remaining two jackets 36 and 37 are both kept at 0 to 10 ° C. That is, the vibration type agitation and mixing device 40 is provided with a temperature gradient that decreases from the first inflow port 31A side toward the discharge port 32 side.

  As described above, the fluid containing the oil component is introduced into the vibrating stirring and mixing device 40 through the first inlet 31A. On the other hand, gas or a gas-liquid dispersion containing gas is introduced into the apparatus 40 through the second inlet 31B located on the downstream side of the first inlet 31A. Therefore, a gas or a gas-liquid dispersion containing a gas is supplied into the device 40 while allowing the fluid to pass through the vibration type stirring and mixing device 40. In other words, the fluid and the gas or gas-liquid dispersion containing the gas merge in the device 40 while the fluid moves in the vibration type stirring and mixing device 40. As described above, since the vibration type agitation and mixing device 40 is cooled by the cooling water, the temperature of the fluid at the time when the fluid and the gas or gas-liquid dispersion containing gas join together is the temperature of the device 40. It is lower than the temperature when it is supplied inside. That is, the fluid joins the gas or the gas-liquid dispersion containing the gas in a state where the temperature is lower than the temperature when the fluid is supplied to the vibrating stirring and mixing device 40. However, if the fluid or the gas-liquid dispersion containing the gas joins the gas or the gas-liquid dispersion when the temperature of the fluid is too low, mixing of the both will be hindered. It is preferable that the oily component that is a solid is supplied into the vibration type stirring and mixing device 40 at a temperature equal to or higher than the solidification start temperature of the oily component and merges with a fluid having a temperature equal to or higher than the solidification start temperature. In this case, the temperature of the fluid at the time of joining is set to a temperature equal to or higher than the solidification start temperature. Each temperature when the fluid and the gas or gas-liquid dispersion containing gas join together may be the same or different. The upper limit of the supply temperature of the gas or gas-liquid dispersion containing gas and the confluence temperature with the fluid is preferably 150 ° C. It is preferable that the upper limit of the temperature of the fluid when joining with gas or a gas-liquid dispersion containing gas is also 150 ° C.

  The solidification start temperature is determined by heating the fluid containing the oil component to 150 ° C. at a heating rate of 10 ° C./min using a differential scanning calorimeter (DSC), and then lowering the temperature at a cooling rate of 2 ° C./min. Measured as the temperature at which the exothermic peak rises.

  In the vibration type stirring and mixing apparatus 40, the stirring body 44 vibrates up and down along the axial direction thereof, so that a fluid passing through the casing 41 and a gas or a gas-liquid dispersion containing gas follow the stirring body 44. The flow is mixed by the turbulence of the flow through the opening 48 and the notch 49 provided in the stirring blade 43. In particular, since the fluid containing the oil component is supplied from a position corresponding to the jacket 34 maintained at a high temperature of, for example, about 90 ° C., the fluidity is high at the time of supply. Therefore, the mixing is promoted by the vibration of the stirring body 44, the re-dispersion is performed following the mixing in the mixing tank 21, and then the gas or the gas-liquid dispersion containing the gas is joined.

  The fluid containing the oil component supplied from the position corresponding to the jacket 34 is pushed out to the position corresponding to the jacket 35, and joins the gas or the gas-liquid dispersion containing gas at this position. Since the temperature at this position is lower than the temperature at the position corresponding to the jacket 34, the fluid is cooled and joined with the gas or the gas-liquid dispersion containing the gas in a state where the fluidity is slightly lowered. In this case, the fluid and the gas or gas-liquid dispersion containing the gas are cooled while being mixed by the flow along the stirring body 44 and the disturbance of the flow through the opening 48 and the notch 49 provided in the stirring blade 43. Furthermore, since there is almost no dead space in the vibration type stirring and mixing apparatus 40, uneven cooling and uneven stirring are less likely to occur. Moreover, the vibration type stirring and mixing device 40 can perform good stirring and mixing regardless of whether the fluid and the gas or the gas-liquid dispersion containing the gas have high fluidity. Due to these advantages of the vibration type stirring and mixing device 40, the amount of heat generated during stirring and mixing is reduced. Therefore, in the present manufacturing method using the device 10A of the first embodiment, solidified solid fat particles are melted. There is no drawback of the conventional method using a biaxial blender that is easy to wear. Therefore, it is possible to favorably disperse the oil component particles. A small calorific value is advantageous from the viewpoint of easy temperature control.

The fluid is cooled while being mixed with gas or a gas-liquid dispersion containing gas at a position corresponding to the jacket 35, and then sequentially extruded to positions corresponding to the jackets 36 and 37, and further cooled at the position. . In this way, the fluid is continuously cooled, and the intended cosmetic is discharged from the discharge pipe 33 through the discharge port 32 of the vibration type stirring and mixing device 40. The temperature of the cosmetic in this state is about 30 ° C. Here, when a fluid containing an oily component is mixed with a gas, a large shearing force is not applied to the fluid during cooling of the fluid, so that fine bubbles of the gas become bulk of the fluid. A large number of bubbles are formed therein, and solid fat is crystallized around these bubbles to be stabilized bubbles (bubble-encapsulated bubbles). The stabilized bubbles (bubble encapsulated bubbles) are uniformly dispersed in the fluid without being destroyed. Further, when a fluid containing an oil component is mixed with a gas-liquid dispersion containing a gas, a large shearing force is not applied to the fluid during cooling of the fluid. Numerous fine air bubbles are dispersed in the bulk of the fluid. Solid fat crystallizes around these bubbles to form bubbles encapsulated, and the bubbles encapsulated are uniformly dispersed in the fluid without being destroyed. If the bubbles encapsulated in the bubble are uniformly dispersed in the fluid, it is difficult for the bubbles to coalesce and the storage stability of the resulting cosmetic is improved.
Moreover, even if the amount of the solid fat is increased, it becomes a cosmetic with a light feeling of use. The bubble-encapsulated bubbles are spherical or substantially spherical with a diameter of preferably about 1 to 100 μm.

  Bubbles are successfully encapsulated by mixing and mixing the fluid and gas or gas-liquid dispersion containing gas at a temperature equal to or higher than the solidification start temperature of the solid fat. Moreover, it becomes difficult to destroy the bubble-encapsulated bubbles by using a device having a low shearing force. If an attempt is made to prevent the destruction of bubbles by lowering the shearing force, inconveniences such as pigment aggregation, bubble coalescence, and reduction in productivity occur due to insufficient mixing. In short, in order to disperse the bubble-encapsulated bubbles uniformly in the fluid and to improve the storage stability of the cosmetic, the gas-liquid dispersion containing the fluid and gas or gas at a temperature higher than the solid fat solidification start temperature. It is preferable that the fluid is mixed and mixed in the vibration type agitation and mixing device 40 that can uniformly mix even if the shearing force is low, and the fluid is cooled in the device 40.

  In addition, when the heat-sensitive component is contained in the intended cosmetic, or when a component that adversely affects the cosmetic due to heat is contained, the component is transferred to the mixing device 16 or the mixing tank 21. It is possible to avoid inconvenience due to heat by supplying directly into the apparatus 40 from a position in the middle of the vibration type stirring and mixing apparatus 40 without filling. For example, since the fluid is cooled to some extent at the position corresponding to the jacket 35, the heat-induced inconvenience can be avoided by supplying the heat-sensitive component to the position using a metering pump. Since the stirring and mixing of the fluid by the vibration type stirring and mixing device 40 is almost a piston flow, even if the heat-sensitive component is supplied from the middle of the device 40, the mixing of the component and the fluid can be performed successfully. it can. Examples of the heat-sensitive component include components that easily change in temperature, such as certain active agents, volatile components, latexes, fragrances, plant extracts, and wax fine dispersions. In order to supply such components, the vibration type stirring and mixing apparatus 40 may be provided with one or more auxiliary injection ports (not shown) in the middle thereof.

  In cooling using the vibration type stirring and mixing device 40, it is preferable to set the average cooling rate to 0.1 to 5 ° C./sec. The average cooling rate is the residence time, which is the difference between the temperature when the fluid enters the vibration type stirring and mixing device 40 and the temperature when the desired cosmetic (cooled fluid) comes out from the device 40. It is the value divided. Moreover, the frequency of the vibration type stirring and mixing apparatus 40 is preferably in the range of 5 to 30 strokes / sec. Furthermore, the total amount of vibration given while being cooled by the vibration type stirring and mixing apparatus 40 is preferably 50 to 100,000 strokes, particularly 200 to 20,000 strokes.

  Next, the main raw material of the cosmetics manufactured by this invention is demonstrated. As described above, the first blended raw material filled in the mixing tank 21 contains at least a solid oil component at 25 ° C. The solid oily component at 25 ° C preferably has a solidification start temperature of 40 to 150 ° C, particularly 50 to 80 ° C.

  In the intended cosmetic, the amount of the solid oil component at 25 ° C. is preferably 1 to 70% by mass, particularly 5 to 60% by mass. When such a formulation (that is, a formulation that increases the blending amount of the solid oily component at 25 ° C.) is employed in the conventional method, the viscosity increases violently during the cooling process, which makes stirring and mixing difficult. On the other hand, if the apparatus 10A of 1st Embodiment is used, even if the compounding quantity of a solid oil-based component is made high at 25 degreeC, sufficient stirring mixing is possible. The ability to increase the blending amount of the solid oily component at 25 ° C. is advantageous from the viewpoint of enhancing the longevity of the makeup.

  A typical example of the oily component that is solid at 25 ° C. is a wax. Waxes broadly include those that undergo a reversible solid / liquid change and have a melting point solidification onset temperature of 30-150 ° C. The melting point solidification start temperature of the wax is preferably 45 to 150 ° C, particularly preferably 50 to 80 ° C. In the present invention, one or more of these waxes can be used from the viewpoint of adjusting the elastic modulus. Specific examples include microcrystalline wax, paraffin wax, polyethylene wax, silicone wax, ceresin, carnauba wax, rice wax, jojoba wax, candelilla wax, whale wax, beeswax, snow wax and the like. Examples of oil components other than solid oil components at 25 ° C. include oil agents and volatile oil agents that are liquid at 25 ° C., such as fatty acids and ester hydrocarbon oils thereof.

  As described above, the second compounding raw material filled in the mixing device 16 contains only gas or gas and components other than gas. Examples of the gas include air, nitrogen gas, carbon dioxide gas, other inert gas, and aroma gas, and these can be used alone or in combination of two or more. When a fragrance gas is blended, sustained release can be imparted to the product by bubble encapsulation.

  An aqueous component can also be used for cosmetics. Examples of the aqueous component include water (purified water), a water-soluble organic solvent, a water-soluble inorganic metal salt, and a water-soluble polymer. As the water-soluble organic solvent, for example, monohydric and polyhydric alcohols such as ethanol, glycerin and dipropylene glycol are used. As the water-soluble inorganic metal salt, for example, magnesium sulfate or the like is used. As the water-soluble polymer, for example, polyoxyethylene behenyl ether, polyoxyethylene stearyl ether, polyoxyethylene cetyl ether and the like are used. These may be used alone or in appropriate combination of two or more. An aqueous component is contained in the 1st compounding raw material and / or the 2nd compounding raw material as needed.

  Surfactant can also be used for cosmetics. Examples of the surfactant include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants that are generally used in cosmetics. The content of these surfactants in the cosmetic is preferably 0.1 to 10% by mass, and more preferably 0.5 to 5% by mass. The surfactant is contained in the first blending raw material and / or the second blending raw material as necessary.

  In addition to the above-mentioned components, components that are usually used in cosmetics, for example, powder components, can be contained in the first blending material and / or the second blending material. Examples of powder components include koji, ultramarine, bengara, iron oxide, titanium oxide, zinc oxide, silicon dioxide, carbon black, magnesium silicate, magnesium aluminum silicate, mica, synthetic mica, synthetic sericite, sericite, talc, Inorganic powder such as kaolin, silicon carbide, barium sulfate, bentonite, smectite; glitter powder such as titanium mica, iron oxide mica titanium, aluminum powder; pigment powder such as organic tar pigment, lake pigment of organic pigment; Examples thereof include composite powders such as fine particle titanium oxide-coated mica titanium, fine particle zinc oxide-coated mica titanium, and barium sulfate-coated mica titanium. These powders can be used alone or in combination of two or more. According to the production method of the present invention using a vibration type agitating and mixing apparatus for cooling, there is an advantage in that high-dispersion can be achieved without crushing glittering powder that is easily crushed by the shearing force because it does not require a strong shearing force.

Next, the present invention will be described based on a preferred second embodiment with reference to FIG.
About the manufacturing method of the cosmetics of 2nd Embodiment, a different point from the manufacturing method of the cosmetics of 1st Embodiment is demonstrated. The point which is not demonstrated in particular is the same as that of the manufacturing method of the cosmetics of 1st Embodiment, and description of the manufacturing method of the cosmetics of 1st Embodiment is applied suitably.

  FIG. 4 shows a schematic view of an apparatus suitably used in the method of the present invention. The apparatus 10B of the second embodiment shown in FIG. 4 is heated and mixed with the fluid obtained by the heating and mixing unit 20 before the fluid obtained by the heating and mixing unit 20 is supplied into the vibration type stirring and mixing device 40. The continuous dispersion apparatus 50 which mixes beforehand the gas obtained by the part 15, or the gas-liquid dispersion containing gas is provided. The continuous dispersion device 50 is connected to the heating mixing unit 20 and the heating mixing unit 15 through the pipes 29 and 19, and is connected to the vibration type stirring mixing device 40 and the jacket 34. Examples of the continuous dispersion device 50 include a static mixer such as a static mixer, an in-line homomixer, and a milder.

  The cosmetic manufacturing method using the apparatus 10B having the above configuration will be described. The fluid containing the oil component obtained in the heating and mixing unit 20 is supplied into the continuous dispersion apparatus 50 through the pipe 29 by the metering pump 28. At the same time, the gas obtained in the heating and mixing unit 15 or the gas-liquid dispersion containing the gas is supplied into the continuous dispersion device 50 through the pipe 19 by the metering pump 17. Thus, before supplying the fluid obtained in the heating and mixing unit 20 into the vibration type stirring and mixing device 40 by the continuous dispersion device 50, the fluid containing the oily component obtained in the heating and mixing unit 20 and The gas obtained by the heating and mixing unit 15 or the gas-liquid dispersion containing the gas is mixed in advance. Next, the fluid mixed with the gas or the gas-liquid dispersion containing the gas in the continuous dispersion device 50 is continuously supplied into the vibration stirring and mixing device 40 through the inlet 31 located in the jacket 34, and the vibration stirring is performed. The fluid is continuously cooled in the mixing device 40. Specifically, a fluid previously mixed with gas or a gas-liquid dispersion containing gas is supplied from the inlet 31 into the casing 41 of the vibration type agitation and mixing device 40 and mixed in the jacket 34 of the casing 41. The fluid supplied into the chamber 47 is sequentially pushed up to a position corresponding to the jackets 35, 36, and 37 by the stirring body 44 that vibrates up and down, and continuously cooled by passing through the casing 41. In this way, since the fluid is continuously cooled, the coalescence of the bubbles is suppressed, and a cosmetic with a fine and creamy feeling of use can be produced. In the present embodiment, it is the supply stage to the continuous dispersion apparatus 50 that requires a solidification start temperature or higher for the fluid containing solid fat.

  The cosmetics produced by the method of the first embodiment and the second embodiment described above are, for example, mascara or mayuka for makeup of eyelashes or eyebrows, liquid lipstick, eye shadow, depending on the composition and amount of the ingredients. Can be used as a cream foundation.

As mentioned above, although this invention was demonstrated based on the preferable 1st Embodiment and 2nd Embodiment, this invention is not restrict | limited to 1st Embodiment and 2nd Embodiment.
For example, in the first embodiment and the second embodiment, the vibration type stirring and mixing device 40 is used as the continuous mixing device of the cooling unit 30, but instead of this, for example, a scraping-type heat exchanger (for example, Sakai Co., Ltd.) An Onrator (registered trademark) manufactured by Seisakusho or a continuous biaxial kneader (for example, a biaxial extruder (trade name) manufactured by Suehiro EPM Co., Ltd.) can be used.

  In the first embodiment and the second embodiment, one vibration type stirring and mixing device 40 is used. Instead, two or more vibration type stirring and mixing devices 40 are connected in series and used. You can also. Moreover, in 1st Embodiment and 2nd Embodiment, the component of the target cosmetics is distributed to a 1st mixing | blending raw material and a 2nd mixing | blending raw material, and the 1st mixing | blending raw material is supplied to the heating mixing part 20. The second blended raw material is supplied to the heating and mixing unit 15, but the first mixed raw material and the second blended raw material are supplied to the heated mixing unit 20 and mixed, and this is mixed with the vibration type stirring and mixing device. 40 may be supplied.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to such examples. Unless otherwise specified, “%” and “part” mean “% by mass” and “part by mass”, respectively.

[Example 1-1]
An oily eye shadow having the composition shown in Table 1 was prepared using the apparatus shown in FIG. Components 1 to 12 (solidification start temperature is 65 ° C.) are dispersed with a homomixer under heating at 85 ° C., then components 13 to 14 are added thereto, mixed and dispersed in a mixing tank, and an oily fluid is obtained. did. 30 g / min (superficial speed 17 hr ⁻¹ ) of this oil-based fluid is transferred from the upstream jacket 34 of the vibration type stirring and mixing device (Vibro mixer manufactured by Chilling Industries Co., Ltd.) to the vibrating type stirring and mixing device with a metering pump. The flow rate was Separately, nitrogen gas heated to 80 ° C. with a heater is transferred to the second unit (position of the jacket 35) from the upstream side of the vibration type stirring and mixing device at 100 cc / min (superficial velocity 56 hr ⁻¹ ) with a metering pump. It was supplied at a flow rate. While moving the oily fluid in the vibration type stirring and mixing device, this is combined with nitrogen gas, mixed by stirring in the device, and further moved in the vibration type stirring and mixing device and continuously moved to 30 ° C. The oily eye shadow was obtained by cooling to the following. In the vibration type stirring and mixing apparatus, the temperature of the jacket 34 was set to 85 ° C., the temperature of the jacket 35 was set to 45 ° C., and the temperatures of the jacket 36 and the jacket 37 were set to 0 ° C. The average cooling rate was 0.7 ° C./sec. The liquid temperature of the fluid when nitrogen gas was injected into the vibration type stirring and mixing apparatus was 75 ° C. Thus, an eye shadow containing bubbles was obtained. The amount of bubbles (gas holdup amount) contained in the obtained oily eyeshadow was 60%, and the average particle size was 48 μm. The gas hold-up amount and average particle size were measured by the following methods. About the obtained oil-based eye shadow, the feeling of use and storage stability were evaluated by the following methods. The results are shown in Table 2. A micrograph of this oily eye shadow is shown in FIG.

[Measurement of gas hold-up amount]
The density of cosmetics containing bubbles obtained by the present invention, and cosmetics having the same composition and containing no bubbles, were measured using specific gravity bottles, respectively, and the following formula was used, The gas hold-up was calculated.
(Gas hold-up) [%] = (ba) / a × 100
a: Density of cosmetics containing bubbles, b: Density of cosmetics not containing bubbles

(Measurement of average particle size)
The cosmetics containing bubbles obtained by the present invention were photographed with an optical microscope, 100 bubble capsule diameters were measured using image analysis software, and the volume average value was obtained.

[Storage stability]
The amount of bubbles (gas hold-up amount) contained in the eye shadow after being stored in a transparent container and allowed to stand at room temperature for 1 month and the average particle size were measured by the above method.

[Use feeling]
A professional panelist actually used it and evaluated the feeling of use. The evaluation criteria are as follows.
A: Very good.
○: Good.
Δ: Normal.
X: Bad.

[Example 1-2]
In Example 1-1, the oily eyeshadow was changed in the same manner as in Example 1-1 except that the cooler provided in the apparatus shown in FIG. Obtained. Specifically, an oily fluid prepared in the same manner as in Example 1-1 was supplied to the onlator by a metering pump. Separately, nitrogen gas prepared in the same manner as in Example 1-1 was supplied from the middle of the onlator with a metering pump. While moving the oily fluid in the onlator, this is combined with nitrogen gas, stirred and mixed in the apparatus, further moved in the onlator and continuously cooled to below 30 ° C. I got an eye shadow. In the onlator, the jacket was set at 0 ° C. and the average cooling rate was 0.3 ° C./sec. The liquid temperature of the fluid when nitrogen gas was injected into the onlator was 75 ° C. Thus, an eye shadow containing bubbles was obtained. The obtained oily eye shadow was evaluated in the same manner as in Example 1-1. The results are shown in Table 2.

[Example 1-3]
In Example 1-1, the oily eyeshadow was changed in the same manner as in Example 1-1 except that the cooler included in the apparatus shown in FIG. 1 was changed from the vibration type stirring and mixing apparatus (vibro mixer) to the extruder. Obtained. Specifically, an oily fluid prepared in the same manner as in Example 1-1 was supplied to the extruder with a metering pump. Separately, nitrogen gas prepared in the same manner as in Example 1-1 was supplied from the middle of the extruder with a metering pump. While moving the oily fluid in the extruder, this is combined with nitrogen gas, stirred and mixed in the apparatus, further moved in the extruder and continuously cooled to below 30 ° C. I got an eye shadow. In the extruder, the jacket was set at 0 ° C. and the average cooling rate was 0.5 ° C./sec. The liquid temperature of the fluid when nitrogen gas was injected into the extruder was 75 ° C. Thus, an eye shadow containing bubbles was obtained. The obtained oily eye shadow was evaluated in the same manner as in Example 1-1. The results are shown in Table 2.

[Comparative Example 1-1]
In Example 1-1, an oily eye shadow was obtained in the same manner as in Example 1-1 except that the wax (components 1 to 3 in Table 1) was excluded from the blending components. More specifically, after the components 4 to 12 in Table 1 were dispersed with a homomixer under heating at 85 ° C., the components 13 to 14 were added thereto, and mixed and dispersed in a mixing tank to obtain an oily fluid. This was supplied to a vibration type stirring and mixing apparatus (Vibro mixer) with a metering pump. Separately, nitrogen gas prepared in the same manner as in Example 1-1 was supplied from the middle of the vibration type stirring and mixing apparatus with a metering pump. While moving the oily fluid in the vibration type stirring and mixing device, this is combined with nitrogen gas, mixed by stirring in the device, and further moved in the vibration type stirring and mixing device and continuously moved to 30 ° C. The oily eye shadow was obtained by cooling to the following. In the vibration type stirring and mixing apparatus, the jacket temperature was set in the same manner as in Example 1-1, and the average cooling rate was 0.8 ° C./sec. The liquid temperature of the fluid when nitrogen gas was injected into the vibration type stirring and mixing apparatus was 75 ° C. The obtained oily eye shadow was evaluated in the same manner as in Example 1-1. The results are shown in Table 2.

[Comparative Example 1-2]
In Example 1-1, an oily eye shadow was obtained in the same manner as in Example 1-1, except that the cooler included in the apparatus shown in FIG. 1 was changed from the vibration type stirring and mixing apparatus (Vibro mixer) to the Adihomo mixer. Got. More specifically, an oily fluid (solidification start temperature: 65 ° C.) and nitrogen gas prepared in the same manner as in Example 1-1 and nitrogen gas were supplied to the Adihomomixer with a metering pump. The oily fluid and nitrogen gas were stirred and mixed in an azihomomixer, and the oily fluid was cooled to 30 ° C. or lower to obtain an oily eyeshadow. In the Ajihomo mixer, the jacket was set to 0 ° C. Nitrogen gas was injected into the Adihomomixer continuously at a fluid temperature in the range of 40 to 75 ° C. The obtained oily eye shadow was evaluated in the same manner as in Example 1-1. The results are shown in Table 2.

  As is apparent from the results shown in Table 2, the oily eye shadows of Examples 1-1 to 1-3 produced according to the production method of the present invention were compared with Comparative Examples 1-1 to 1-1 produced by the method of Comparative Example. It can be seen that it is superior in usability and storage stability as compared to 1-2 oily eye shadow. In addition, the oily eye shadows of Comparative Examples 1-1 to 1-2 produced by the method of Comparative Example did not contain bubbles. On the other hand, in the oily eye shadow of Example 1-1, bubbles (bubble encapsulated bubbles) in which solid fat crystallizes and is stabilized around the bubbles are formed from the micrograph shown in FIG. I understand that.

[Example 2-1]
An oil-in-water (O / W type) mascara having the composition shown in Table 3 was prepared using the apparatus shown in FIG. Add the oily component (1-6 component) previously dissolved at 85 ° C to the aqueous component (7-14 component) dissolved at 85 ° C, and emulsify it with a homomixer while heating at 85 ° C. After that, this was put into a mixing tank to obtain an O / W type fluid (solidification start temperature was 59 ° C.). This O / W type fluid is transferred from the jacket 34 on the upstream side of the vibration-type stirring and mixing device (Vibro mixer manufactured by Chilling Industries Co., Ltd.) to the vibration-type stirring and mixing device 45 g / min (superficial speed 25 hr ^{− 1} ) was supplied at a flow rate. Separately, a gas-liquid dispersion (component of 15 to 16) (also referred to as nitrogen gas dispersion) prepared using a filter having a pore size of 1 μm (SPG membrane manufactured by SPG Techno Co., Ltd.) is heated to 80 ° C. with a heater. The heated nitrogen gas dispersion was supplied to the second unit (position of the jacket 35) from the upstream side of the vibration type stirring and mixing device at a flow rate of 36 g / min (superficial velocity 20 hr ⁻¹ ) with a metering pump. . While moving the O / W type fluid in the vibration type stirring and mixing device, this is combined with the nitrogen gas dispersion, stirred and mixed in the device, and further moved in the vibration type stirring and mixing device and continuously. Thus, the mixture was cooled to 30 ° C. or lower to obtain an O / W type mascara. In the vibration type stirring and mixing apparatus, the temperature of the jacket 34 was set to 85 ° C., and the temperatures of the jacket 35, the jacket 36 and the jacket 37 were set to 5 ° C. The average cooling rate was 0.7 ° C./sec. The liquid temperature of the fluid when the nitrogen gas dispersion was injected into the vibration type stirring and mixing apparatus was 80 ° C. In this way, a mascara containing bubbles was obtained. The amount of bubbles (gas hold-up amount) contained in the obtained O / W type mascara was 20%. The obtained O / W type mascara was evaluated in the same manner as in Example 1-1. The results are shown in Table 4.

[Example 2-2]
In Example 2-1, an O / W type mascara was performed in the same manner as in Example 2-1, except that the cooler included in the apparatus shown in FIG. 1 was changed from a vibration type stirring and mixing apparatus (vibro mixer) to an onrator. Got. Specifically, an O / W fluid prepared in the same manner as in Example 2-1 was supplied to the onlator with a metering pump. Separately, a nitrogen gas dispersion prepared in the same manner as in Example 2-1 was supplied with a metering pump from the middle of the onlator. While moving the O / W type fluid in the onlator, this is combined with the nitrogen gas dispersion, stirred and mixed in the apparatus, and further moved in the onlator to continuously reach 30 ° C. or lower. After cooling, an O / W type mascara was obtained. In the onlator, the jacket was set at 5 ° C., and the average cooling rate was 0.3 ° C./sec. The liquid temperature of the fluid when the nitrogen gas dispersion was injected into the onlator was 80 ° C. In this way, a mascara containing bubbles was obtained. The obtained O / W type mascara was evaluated in the same manner as in Example 2-1. The results are shown in Table 4.

[Example 2-3]
In Example 2-1, the O / W type mascara was changed in the same manner as in Example 2-1, except that the cooler included in the apparatus shown in FIG. 1 was changed from the vibration type stirring and mixing apparatus (vibro mixer) to the extruder. Obtained. Specifically, an O / W fluid prepared in the same manner as in Example 2-1 was supplied to the extruder with a metering pump. Separately, a nitrogen gas dispersion prepared in the same manner as in Example 2-1 was supplied with a metering pump from the middle of the extruder. While moving the O / W type fluid in the extruder, the O / W type fluid is combined with the nitrogen gas dispersion, stirred and mixed in the apparatus, and further moved in the extruder to continuously reach 30 ° C. or lower. After cooling, an O / W type mascara was obtained. In the extruder, the jacket was set at 5 ° C. and the average cooling rate was 0.5 ° C./sec. The liquid temperature of the fluid when the nitrogen gas dispersion was injected into the extruder was 80 ° C. In this way, a mascara containing bubbles was obtained. The obtained O / W type mascara was evaluated in the same manner as in Example 2-1. The results are shown in Table 4.

[Comparative Example 2-1]
In Example 2-1, the O / W type is the same as in Example 2-1, except that the cooler included in the apparatus shown in FIG. 1 is changed from the vibration type stirring and mixing apparatus (Vibro mixer) to the Ajihomo mixer. I got a mascara. More specifically, an O / W fluid and a nitrogen gas dispersion prepared in the same manner as in Example 2-1 were supplied to an adihomomixer with a metering pump. The O / W type fluid and the nitrogen gas dispersion were stirred and mixed in an azihomomixer, and the O / W type fluid was cooled to 30 ° C. or less to obtain a mascara. In the Ajihomo mixer, the jacket was set to 5 ° C. Nitrogen gas was injected into the Adihomomixer continuously in a temperature range of 40 to 80 ° C. The obtained O / W type mascara was evaluated in the same manner as in Example 2-1. The results are shown in Table 4.

  As is clear from the results shown in Table 4, the O / W type mascara of Examples 2-1 to 2-3 produced according to the production method of the present invention was Comparative Example 2-1 produced by the method of Comparative Example. It can be seen that the O / W type mascara is superior in usability and storage stability. Moreover, the O / W type mascara of Comparative Example 2-1 manufactured by the method of the comparative example did not contain bubbles.

10A, 10B device 15 mixing unit of gas or gas-liquid dispersion containing gas 20 heating mixing unit of fluid containing oily component 30 cooling unit 40 vibration stirring and mixing device 41 casing 42 drive shaft 43 stirring blade 44 stirring member 50 continuous Type dispersion device

Claims (5)

A method for producing cosmetics comprising mixing a raw material containing one or more solid oily components at 25 ° C. under heating to form a fluid, and cooling the resulting fluid through a continuous mixing device Because
A gas or a gas-liquid dispersion containing the gas is continuously supplied into the continuous mixing apparatus, and the fluid and the fluid are mixed while the temperature of the fluid is equal to or higher than the solidification start temperature of the oil component. A method for producing a cosmetic, wherein the body is cooled in the continuous mixing device. A method for producing cosmetics comprising mixing a raw material containing one or more solid oily components at 25 ° C. under heating to form a fluid, and cooling the resulting fluid through a continuous mixing device Because
The temperature of the fluid is equal to or higher than the solidification start temperature of the oil component, gas or a gas-liquid dispersion containing the gas and the fluid are mixed in advance and continuously supplied into the continuous mixing apparatus, A method for producing a cosmetic, wherein a fluid is cooled in the continuous mixer.   The method for producing a cosmetic according to claim 1 or 2, wherein the gas or the gas-liquid dispersion containing the gas is supplied into the continuous mixing apparatus at a temperature equal to or higher than a solidification start temperature of the oil component.   The method for producing a cosmetic according to any one of claims 1 to 3, wherein the oil component has a solidification start temperature of 40 to 150 ° C.   As the continuous mixing device, a vibration type in which a stirring body including a drive shaft and a stirring blade attached to the drive shaft is provided in a tubular casing, and the drive shaft vibrates in the axial direction. The manufacturing method of the cosmetics in any one of Claim 1 thru | or 4 which uses a stirring and mixing apparatus.