JP2891731B2 - Manufacturing method of pressed cosmetics - Google Patents

Description

The present invention relates to a method for producing a pressed cosmetic, and in particular,
The present invention relates to a method for producing an oil-based press-type cosmetic which press-molds a cosmetic composition containing a large amount of fats and oils containing solid waxes.

[Conventional technology]

Hitherto, as a method for obtaining an oil type press cosmetic, Japanese Patent Application Laid-Open Nos. 56-131510 and 59-62513 have been proposed.

The former method described in JP-A-56-131510 discloses a method in which a heated and dissolved cosmetic composition is poured into a medium dish and filled, and then pressed at a temperature not lower than a temperature at which solid waxes in the cosmetic composition solidify. It is a method of molding.

Further, the method described in the latter JP-A-59-62513, once poured and filled the cosmetic composition into a cylindrical filling container, after solidifying the cosmetic composition in the cylindrical filling container,
Take this out, cut it to the appropriate thickness, fill in the inner plate,
It is a method of press molding.

[Problems to be solved by the invention]

In the former method, since the cosmetic composition is pressed at a temperature equal to or higher than the temperature at which the waxes solidify, the cosmetic composition adheres to the press head. In such a case, when an attempt is made to remove the cosmetic composition from the press head, a physical force is applied to the pressed pressed cosmetic, the surface is deformed, the appearance is significantly broken, and the commercial value is reduced. There was a problem that it would.

In the latter method, the cosmetic composition is once solidified, then taken out, cut, filled in a filling container, and further pressed. there were.

Furthermore, in this method, a gap is formed between the inner plate and the cosmetic after press molding, or even if a gap is not formed, a so-called burr that the cosmetic composition protrudes out of the inner plate is generated, which also breaks the appearance. There was a problem.

In addition, in this method, the cosmetic composition is pressed after it is completely solidified to the center, so that pressing is applied in a state where a gel structure is completed in the center, and as a result, press stress remains inside, There is a problem that the molded cosmetic cracks over time, and oil off (a state in which oil oozes out) and the like easily occur.

The present invention solves the above-mentioned conventional problems by reducing the number of production steps, reducing the time and effort required for production, and also providing a method for obtaining a press-shaped cosmetic which has a beautiful appearance, does not crack, and does not cause oil off. To provide a technical issue.

[Means for solving the problem]

In order to solve the above problems, in the method for producing a pressed cosmetic according to the present invention, the mixing ratio of fats and oils containing solid waxes is 30 to 70% by weight, and the mixing ratio of powders is 70 to 70%.
30% by weight of a heated and melted cosmetic composition in a fluidized state is provided in a filling container, then the surface of the cosmetic composition in the filling container is forcibly cooled, and then the cosmetic composition is solidified before the center is solidified. The raw material composition is pressed between the lower elastic body and the upper elastic body and pressed.

The forced cooling is preferably performed at 15 ° C. or less. Further, before the center of the cosmetic composition is solidified, it is preferable to press with an intervening cloth interposed therebetween.

[Action]

In the method for producing a pressed cosmetic according to the present invention, since the cosmetic composition is pressed before the center is solidified, even if the surface is solidified in advance by forced cooling, during the pressing step, the cosmetic composition is not cured. The center remains flexible.

Excessive pressing force is absorbed by the cosmetic composition in the fluid state at the center, and stress during molding does not accumulate inside the cosmetic after molding.

At the time of molding, the center of the cosmetic composition is fluid, and the outer periphery is solidified. The generation of overburden is prevented.

 Hereinafter, the present invention will be described in more detail.

Examples of the composition that is preferably press-molded in the present invention include a cosmetic composition formed mainly of powders and fats and oils containing solid waxes.

Such fats and oils that constitute the main component of the cosmetic composition together with the powders contain solid waxes. In this case, solid waxes contained in the fats and oils are, in particular,
It is preferable that the solid oil has a melting point of 40 ° C. or higher. Specific examples include carnauba wax, paraffin wax, candelilla wax, cetyl alcohol, microcrystalline wax, jase wax, stearyl alcohol, polyethylene powder, and hydrogenated castor oil.

These may be used alone or in combination.

Fats and oils formed by containing such solid waxes, in addition to the solid waxes described above, include, for example, silicone oil, liquid paraffin, squalane, lanolin or derivatives thereof, jojoba oil, olive oil , Castor oil, petrolatum, octyldodecyl oleate, octyldodecyl erucate, diglycerin triisostearate, glycerin tri-2-ethylhexanoate, and the like.

These may be used alone or in combination.

The proportion of the solid wax in the fats and oils as described above containing the solid wax varies depending on the type of the solid wax, but usually, when it is 3 to 15% by weight, molding is easy. It is preferable.

Examples of powders constituting the main component of the cosmetic composition together with the fats and oils formed in such a configuration include, for example, talc, mica, kaolin, titanium mica, titanium oxide, zinc oxide, iron oxide, and other treated powders. Classes, such as color pigments,
In addition, organic powders such as methacrylic acid ester resin powder and nylon powder may be used.

These may be used alone or in combination.

In such cosmetic compositions comprising oils and fats and powders, if necessary, pigments, preservatives, antioxidants, surfactants, fragrances, etc., which are included in ordinary cosmetics May be further included singly or in combination, as long as the object of the present invention is not impaired.

The amount of the fats and oils in the cosmetic composition having such a composition is usually preferably 30 to 70% by weight. If the amount of the fats and oils is less than 30% by weight, the viscosity of the composition does not sufficiently decrease even when heated, and sufficient fluidity does not appear, making it difficult to flow into a filling container, which is not preferable. 70 fats and oils
If the content is more than 10% by weight, the oil content of the molded press-shaped cosmetic is excessive, and the cosmetic on the skin surface is less sticky, which is not preferred.

The amount of powders varies depending on the amount of coexisting fats and oils, but is generally preferably 30 to 70% by weight.

In the method for producing a pressed cosmetic of the present invention, a cosmetic composition typified by a cosmetic composition formed mainly of powders and fats and oils such as those described above, for example, by the following method It is advisable to perform molding using a machine having such a configuration.

In the method for producing a pressed cosmetic according to the present invention, as shown in FIG. 12, a filling container setter 20 for temporarily storing a filling container 10 to be filled, and a filling container 10 filled with the cosmetic composition in a high-temperature fluidized state. Filling machine 30, a cool air tunnel 40 in which a cool air for forcibly cooling the surface of the cosmetic composition in a high temperature fluidized state flows through the cave, and an unillustrated sorting for sorting a filling container filled with the cosmetic composition Machine, and a press 50 for pressing the cosmetic composition contained in the sorted filling container 10 are arranged in this order, and the filling container 10 is sequentially placed from the filling container setter 20 to the press 50. A conveyer 60 to be moved is provided, and a filling device 70 is constituted by the entirety.

The cosmetic filling machine 30 has a cosmetic composition storage can (not shown) provided with a heater, and a stir bar may be provided in the composition cosmetic storage can. Further, a vibrator (not shown) that applies vertical vibration to the filling container 10 may be attached to the cosmetic filling machine 30.

It is preferable to provide a plurality of press machines 50, preferably four or more press machines, in a state where simultaneous operation is possible. As shown in FIG. 1, the press machine 50 has, for example, the following configuration in advance.

An elastic plate 2 serving as a lower elastic body is overlaid on the upper surface of a horizontal base 1 provided with a window opened in the vertical direction, and a press base 3 is provided by the horizontal base 1 and the elastic plate 2. The elastic plate 2 is made of, for example, a material such as polyurethane rubber, has a window having the same diameter as the window of the horizontal base 1, and the window of the elastic plate 20 is overlapped with the window of the horizontal base 1 coaxially, and the suction of the press table 3 is performed. Mouth 4. The suction port 4
Is provided with a vacuum suction device (not shown).

Immediately above the suction port 4 of the press table 3, there is provided a vertically movable press piston 5 having a press surface sufficiently wider than the opening range of the suction port 4 and exerting a pressing force while descending in the direction of the press table.

The press head of the press piston 5 forms a flat elastic layer 6 serving as an upper elastic body with an elastic body made of a material such as polyurethane rubber as described above, and further, a Teflon layer 6a is provided on the lower surface of the elastic layer 6. . When the Teflon layer 6a is provided on the lower surface of the elastic layer 6, adhesion between the press head and the cosmetic composition at the time of pressing can be prevented, and the mechanical productivity may be improved.

In the vicinity of the press piston 5 at an intermediate height between the top dead center of the lower surface of the press head of the press piston 5 and the upper surface of the pedestal,
A peeling rod 8 for peeling the interposed cloth 7 which is preferably interposed on the upper surface of the cosmetic composition at the time of pressing from the molded cosmetic is provided in a horizontally movable manner in a horizontal state.

In the method for producing a pressed cosmetic according to the present invention, for example, the above-described cosmetic composition is press-formed using the filling device 70 having the above-described configuration.

The cosmetic composition is stored in the storage can of the cosmetic filling machine 30.
In the cosmetic filling machine 30, the stored cosmetic composition may be heated by a heater to a temperature higher than its fluidization temperature to fluidize, and further stirred by a stirring rod in a storage can. When the mixture is heated and further stirred as described above, the components may be uniformly mixed even if they are present in a non-uniform state in the composition.

The bottomed cylindrical filling container 10 having an opening of approximately the same size as the expansion of the press surface of the press piston 5 opened at the top is stored in the filling container setter 20 and sent to the cosmetic filling machine 30 by the conveyor 60. Next, the cosmetic composition heated and fluidized in the cosmetic filling machine 30 is filled into the filling container 10.
In this case, casting filling may be used. When the cosmetic composition rises in a conical shape in the filling container 10 as shown in FIG. 2 when the cosmetic composition is filled, the container is filled with a vibrator (not shown) attached to the cosmetic filling machine 30. 10 is vibrated up and down to make the top surface of the filled cosmetic composition as flat as possible as shown in FIG.
It is good to let it cool naturally once. When allowed to cool naturally, the portion 10a where the cosmetic composition is in contact with the filling container 10 solidifies. The cooling time varies depending on the environmental temperature of the place where the cosmetic is to be molded, but is generally about 20 seconds to 80 seconds.

When the surface is solidified with the flow mark 11 left on the top surface of the filled cosmetic composition as shown in FIG. 3 and FIG. 4, a heated metal plate (not shown) is attached to the flow mark 11. It is preferable that the flow mark 11 is melted by contact with the flow mark 11 so that the flow mark 11 disappears.

Then, the filled container 10 as shown in FIG. 5 obtained by allowing to cool is sent into the cool air tunnel 40 and passed through the cool air to perform forced cooling of the cosmetic composition. In the cold air tunnel 40, the surface of the filled cosmetic composition
It is preferable that the surface be solidified by cooling by sending cool air from above, which corresponds to the direction of the arrow shown in the figure. The cool air temperature is preferably 15 ° C. or less, and the cooling time is preferably about 10 to 60 seconds. In this way, the upper part 10b of the cosmetic composition solidifies, and in general, the outer layer is solidified at a surface temperature of about 35 ° C., and the center part is about 50 ° C., and the semi-fluidized cosmetic composition is not yet gelled. The starting composition is obtained.

The cosmetic composition thus forcedly cooled and the filled container 10 are further transferred to a sorting machine by the conveyor 60, and further sorted to the press machine 50.

In the press machine 50, the filling container 10 is disposed just above the suction port 4 of the press table 3, and the suction port 4 is sufficiently closed at the bottom of the filling container 10.

Raise the press head of press piston 5 to top dead center,
Next, as shown in FIG. 8, the press head is sufficiently depressed, and the cosmetic composition filled in the filling container is pressed between the elastic layer 6 of the press head and the elastic plate 2 on the upper surface of the horizontal base 1. . At the same time, the bottom of the filling container 10 is sucked by a vacuum suction device (not shown) provided in the suction port 4. By doing this,
It is possible to prevent a situation where the cosmetic composition adheres to the press head together with the filling container and becomes difficult to peel off from the press head.

Prior to pressing, the cosmetic composition is covered with an intervening cloth 7 interposed between the press head and the cosmetic composition from above the peeling rod 8 provided in the vicinity of the press piston 5. A beautiful cloth pattern may be projected on the surface of the material.

Next, as shown in FIG. 9, the press piston 5 is pushed up, and then, as shown in FIG. 10, the peeling bar 8 is moved horizontally to move the space between the cosmetic composition in the filling container 10 and the interposing cloth 7. Remove the adhesive.

In the practice of the present invention, as described above, at the time of press molding, the cosmetic composition may be placed in a fluidized state in advance and then placed in the predetermined filling container 10, but the solid cosmetic composition may be filled in the filling container. The same effect may be obtained by heating and fluidizing after being placed in the inside of the tube.

 Hereinafter, embodiments of the present invention will be described.

〔Example〕

<Examples 1 to 3> Cosmetic compositions having the compounding ratios shown in Table 1 were prepared, a filling device 70 having the above-described configuration was provided, and press cosmetics were molded according to the procedure shown in FIG.

The items shown in Table 2 were evaluated for the press cosmetics thus obtained.

 The results are shown in Table 2.

In addition, in the evaluation of cracking and oil-off, 5 ° C to 40 ° C
Aging in which the temperature was raised and lowered between 48 ° C. in one cycle for 48 hours was continuously performed for one month, and a change with the lapse of time was confirmed.

In this example, since the cosmetic composition was press-molded in a fluid state at the center, it was confirmed that the internal density of the obtained cosmetic was constant.

Press molding is performed between the press head having the elastic layer 6 and the elastic plate 2, and excessive pressing force is absorbed by the elastic layer 6 a and the elastic plate 2, and further, the cosmetic composition in the fluid state at the center portion is also applied. Because of absorption, it was confirmed that a soft filled molded product was obtained without remaining stress during molding after molding.

Also, since the press head is Teflon processed,
It was found that the molded article and the intervening cloth 7 hardly adhered during pressing.

It was found that the molded cosmetic hardly caused cracks and oil-off with the passage of time, and the surface profile was hardly damaged for a long period of time.

〔The invention's effect〕

Since the present invention is formed with the above-described structure, it is possible to obtain a press-type cosmetic which has a small number of production steps, requires no labor for production, and has a beautiful appearance, no cracks and no oil-off.

[Brief description of the drawings]

FIG. 1 is a diagram showing a main part of a press machine used in an embodiment of the present invention, and FIGS. 2 to 10 are diagrams showing an outline of a filling method.
FIG. 2 is a view showing a state in which the cosmetic composition is filled in a flowing container into a conical shape in a flowing state, and FIG. 3 is a state in which the upper surface is made as flat as possible by applying vibration to the flowing cosmetic composition. FIG. 4 is a view showing a state of a cosmetic composition in which a flow mark is finally left after vibration, and FIG. 5 is a view showing a state in which a contact portion with a filling container is solidified by natural cooling. FIG. 6 is a diagram showing a state where the upper surface is solidified by forced cooling,
FIG. 7 is a diagram showing a state in which pressing is performed with an interposing cloth interposed, FIG. 8 is a diagram showing a state in which pressing is performed, and FIG. 9 is a diagram showing a state in which the press head is raised after pressing is completed. ,
FIG. 10 is a view showing a state in which the intervening cloth is peeled off, FIG. 11 is a view showing a cosmetic material formed by filling press molding, FIG. 12 is a plan view of the entire press device, FIG. 13 is a process diagram. is there. 2 ... elastic plate, 6 ... elastic layer 7 ... interposed cloth, 10 ... filling container

Continued on the front page (72) Inventor Katsumi Tsukamoto 1234 Aino, Fukuroi-shi, Shizuoka Pref.Polar Chemical Industry Fukuroi Plant (72) Inventor Tatsuya Hasegawa 1234 Aino, Fukuroi-shi Shizuoka Pref.Polar Kasei Industrial Co., Ltd. (56 References JP-A-64-9910 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A61K 7/02

Claims (3)

(57) [Claims] 1. A hot-melt fluidized cosmetic composition containing 30 to 70% by weight of fats and oils containing solid waxes and 70 to 30% by weight of powders in a filled container. Providing, then forcibly cooling the surface of the cosmetic composition in the filling container, and then moving the cosmetic composition in the filling container between the lower elastic body and the upper elastic body before the center is solidified. A method for producing a pressed cosmetic which is pressed and pressed. 2. The method for producing a cosmetic press according to claim 1, wherein the forced cooling is performed at 15 ° C. or lower. 3. The method according to claim 1, wherein the forcedly cooled cosmetic composition is pressed with an intervening cloth interposed therebetween.
The method for producing a pressed cosmetic according to the above.