JPH0699274B2 - Powder cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to powder cosmetics such as foundations, eye shadows, and cheeks, especially powder cosmetics molded into a thin shape. The present invention relates to a powder cosmetic material obtained by spraying and discharging a powder cosmetic base material together with a volatile solvent onto a cosmetic material holder to directly fill and solidify.

[Prior Art] Conventionally, as a method for molding powder cosmetics, a method has been generally used in which a fixed amount of powder cosmetics is uniformly filled in a container or an inner dish and then pressed with a pressing machine. .

In addition, as a method for producing a powder cosmetic or a solidification molding method other than the above, there is a technique using a volatile solvent. For example, as described in JP-A-56-108703, powder cosmetics are mixed with a volatile solvent to form a slurry, which is poured into a container and filled, and then the solvent is volatilized and removed under reduced pressure to be dried and solidified. As described in Japanese Patent Laid-Open No. 56-127305, the powder cosmetics mixed with a solvent are pressure-filled into a container, and then the solvent is absorbed by an absorber and removed by suction to solidify the filling. Then, a method of molding is known.

[Problems to be Solved by the Invention] However, when an attempt is made to obtain a powder cosmetic by the above-mentioned conventional manufacturing method, there are problems as described below particularly for a powder cosmetic molded into a thin shape. However, the reality was that it was difficult.

In the conventional press molding method, it is necessary to fill a certain amount of powder cosmetics in a container or a medium plate with a uniform thickness before pressing. It's important. If the press molding is performed with the non-uniform filling, the strength of the press becomes uneven, and the impact such as a drop easily causes cracking of the content, which lowers the impact resistance. However, conventional pressed products generally have a certain thickness or more, and usually have a thickness of about 4 to 5 mm. In such a case, even if they are slightly unevenly filled and pressed, In general, it was customary that there would be no problem in commercialization. But,
When the thickness is about 0.2 to 2 mm as a thin type, even more precise precision is required in terms of impact resistance for uniform filling before pressing, but in reality powder cosmetics have a cosmetic effect and feel. In consideration of this, and because an oil agent is added and mixed as a binder to maintain the shape, the fluidity is poor.Thus, such a thin and uniform filling of a material with low fluidity not only leads to a reduction in work efficiency. Not very difficult.

On the other hand, when molding into a thick shape or when trying to mold a bulky composition, when simply pressed during molding, air is also compressed at the same time as the press, causing air to prevent solidification of the powder cosmetic, It has always been a matter of studying the binder and powder type to be used and providing air holes in the container for venting air and devising a device.

Furthermore, in the method of pouring and filling a slurry-like material in which a powder cosmetic and a volatile solvent are mixed, then removing the solvent and drying and solidifying, filling is facilitated and smoothness of the molding surface is obtained. Because of this, it is necessary to increase the fluidity, so the amount of solvent used increases, and when this solvent is removed and dried later, the volume change before and after drying becomes large, causing a loss of moldings, etc. There was a drawback.

And in the case of a method of absorbing and removing the solvent with an absorber by pressure injection filling with a similar mixture of powder cosmetics and a solvent,
This requires a member for injecting and discharging into a container or the like and a member for absorbing a solvent, which complicates the apparatus. In addition, the injection hole in the container,
Alternatively, holes for solvent removal must be provided, and if such processing is applied to a thin inner plate, the strength will be weak and it will be easily distorted, and it will be difficult to obtain a thin enough container and an inner plate suitable for this. Moreover, there are problems in collapse of the contents in the filling holes and strength, and it is difficult to obtain a desired product with these guaranteed. Further, there is also a problem in that a solvent-soluble substance such as a fragrance or a preservative is absorbed and sucked together with the removal of the solvent to obtain a stable product.

As described above, in the conventional method, particularly in the case of manufacturing powder cosmetics to be molded into a thin shape, uniform filling property during pressing, workability, volume change due to the use of a solvent, complicated device,
It was difficult to easily manufacture a satisfactory product with good quality due to the stability of prescription components.

[Means for Solving the Problems] In view of the above circumstances, the present inventors have proposed a method for producing a powder cosmetic for molding into a thin shape, which has been difficult in the prior art, without lowering workability. As a result of diligent studies, a powder cosmetic base having a stable quality can be easily obtained by mixing a powder cosmetic base and a solvent and directly spraying the mixture onto a container or a medium dish. After discovering this, the present invention was completed.

That is, the present invention relates to a powder cosmetic characterized in that a powder cosmetic base is mixed with a volatile solvent, and the mixture is sprayed and discharged onto a cosmetic holder to be directly filled and solidified.

To explain the present invention in more detail, first, a fixed amount of a powder cosmetic base and a volatile solvent is mixed by stirring to disperse them to obtain a uniform mixture.

In this case, the powder cosmetic base in the present invention is composed of a pigment acceptable for cosmetics, an oil agent and other necessary components, and an ordinary powder cosmetic, such as foundation, white powder, As eye shadow, hoho red, etc.
It can be used as a powder cosmetic as it is, and may be prepared according to a general manufacturing method.

As the volatile solvent, any of known solvents can be used, for example, water, lower alcohols such as ethyl alcohol and isopropyl alcohol, low-boiling isoparaffins, hydrocarbons such as hexane, low-boiling chain and cyclic silicone oils, CFCs. And the like, which can be used alone or as a mixture.

The mixing ratio of the powder cosmetics base and the volatile solvent may be determined each time in consideration of the constitution / state of the base, filling property, workability and the like. In the present invention, even if the amount of volatile solvent used is small and it is viscous, it is possible to easily perform discharge spraying by changing the type of spray nozzle and discharge pressure described later.
Depending on the formulation of the powder cosmetics base, it can be carried out without using a volatile solvent, but if a solvent is used, the filling property is more effectively promoted.

The mixture of the powdery cosmetic base and the volatile solvent can be easily and uniformly filled by directly spraying from a spray nozzle or the like onto the appropriate cosmetic carrier to be filled, using a spray gun or the like. Then, in the case of attempting to continuously fill a large number, it is possible to drive the spray nozzle portion and the cosmetic material holder portion by providing a driving device such as a motor or an air cylinder to fill them to a uniform thickness. it can.

The spray nozzle used in the present invention may be a one-fluid spray nozzle or a two-fluid spray nozzle, as long as it can spray powder cosmetics. The type of spray nozzle, pressurizing conditions, etc. are appropriately selected and set according to the filling material.

Further, as a holder for the powdered cosmetic to be filled, a container, a medium plate, and a plate-shaped holder may be used, and the size, shape,
The material is not particularly limited and may be optionally used.

According to the present invention, it is possible to obtain a powder cosmetic having a desired shape by selecting a cosmetic holder and, at the time of spraying, covering a holder portion that is not filled with a cover or providing a compartment. It is also possible to obtain a product in which multicolored or different powdered cosmetics are contained in the same container by covering the part and refilling.

The powdered cosmetic thus filled is then volatilized by allowing the remaining volatile solvent to stand by itself, and if necessary, dried by heating to be solidified and molded. In the present invention, during spray filling, most of the solvent is volatilized, so the residual amount is small, and its removal is easy, but since the solvent volatilization is accelerated,
It can be made more effective by the means for heating the spray nozzle part or the cosmetic carrier part.

According to the present invention, as described above, in the case of spray filling using a volatile solvent, the cohesiveness of the filling material is obtained at the time of solvent evaporation, and the cohesiveness is further enhanced by heating and filling to increase the strength of the molded product. This makes it extremely easy to fill the powder cosmetics into a thin shape of about 0.2 to 2 mm, which was difficult with the conventional molding method. Further, since the above heating means is possible, it is also possible to add a solid oil agent that dissolves by heating in the base formulation and solidify at room temperature after filling and molding to improve the binding property of the powder, and such a component can be used without any trouble. It may be blended.

EXAMPLES Next, the present invention will be described with reference to examples. These do not limit the invention in any way. The blending amount is parts by weight.

Example [1] According to the filling method of the present invention, an eye shadow was prepared with the formulation shown in Table 1.

According to the usual method, the powder component (1) to
(5) is mixed by stirring with a blender, and the oil agent components (6) to (8) and the fragrance (9) that have been mixed in advance are added and mixed to obtain a powder cosmetic base. The powdery cosmetic base and the volatile solvent (10) are mixed with stirring to uniformly disperse a slurry. Then, using a spray gun, the slurry is sprayed directly from a spray nozzle to a gold plate (size of 1.5 x 2.5 cm) to be filled, then naturally dried and solidified to form a thin eye shadow. .

By filling in this way, an eye shadow having a thickness in the range of 0.2 to 2 mm could be molded extremely easily without using a complicated device. Further, the gold plate could be easily filled even if it had a circular shape, a semicircular shape, an elliptical shape, a rhombic shape, or the like. And, unlike the press molding, the obtained thin eye shadow had good usability and impact resistance in a uniformly filled state, was convenient for portability, and was satisfactory in quality.

Example [2] According to the filling method of the present invention, a cheek red was prepared with the formulation shown in Table 2.

In the same manner as in Example [1], Component A ((1) to
(7)) and a component B ((8) to (13)) which are obtained by homogeneously mixing, and a powder cosmetic base and a volatile solvent ((14) to (15)) which are mixed and dispersed. Was spray-discharged directly from the injection nozzle to the inner plate using a spray gun, filled, then dried, solidified and molded to produce a thin cheek red.

In this way, usability and impact resistance are good, portability,
It was possible to stably and easily obtain thin (about 0.2 to 2 mm) cheeks that are convenient for setting.

[Effects of the Invention] As described above, the powder cosmetic of the present invention is prepared by mixing the powder cosmetic base and the volatile solvent, spraying it directly onto the cosmetic holder, and directly filling and solidifying it. It is characterized by that.

According to the present invention, it is possible to uniformly fill powder cosmetics by adopting a means of spray filling by a spray method, and it is possible to stably obtain a thin molded product and to manufacture a product having an arbitrary thickness. It's easy. Further, it is possible to easily fill a deformed cosmetics holder, and it is possible to obtain a product having a desired shape or a product in which the same cosmetics holder is filled with multicolored or different kinds of cosmetics.

Further, in the present invention, since the strength is obtained by the cohesive force of the powder generated by the volatilization of the solvent, no pressing is required. Even if pressing is performed to increase the reinforcement, the filling is already uniformly performed, so that the filling does not have uneven strength.

In addition, when spraying a mixture of a powdery cosmetic base and a volatile solvent, compared to the conventional pouring and filling method, it does not require fluidity, and even if it is a viscous gel-like mixed state, it is spray-filled. It is possible, and therefore the fluidity of the mixture can be controlled at any time without the need to use large amounts of solvent.

Further, in the present invention, in the filling step by spray discharge, most of the solvent is volatilized at that time, so that there is almost no change in volume after the filling is dried, and the residual solvent is quickly dried and removed thereafter. Further, unlike the method of sucking and removing the solvent here, there is no drawback that the solvent-soluble substance is removed.

Furthermore, the production method of the present invention does not require a complicated apparatus to carry out and is simple, and it is possible to process a powder cosmetic having a desired shape and thickness, and a large number of products at one time. It has good workability.

Therefore, by adopting the manufacturing method according to the present invention, it is possible to extremely easily manufacture powder cosmetics molded into a thin shape, which has been difficult in the past, and is convenient to carry and light, and to be compatible with other cosmetics. It has become possible to provide products with excellent settability and products with shapes and thicknesses that meet needs.

Claims (1)

[Claims] 1. A powder cosmetic, characterized in that the powder cosmetic base is mixed with a volatile solvent, and the mixture is sprayed and discharged directly onto a cosmetic carrier to be directly filled and solidified.