JP2666985B2 - Container for filling cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a novel cosmetic filling container.

(Prior art) In general, cosmetics are sold in the form of a dish-shaped container having a cavity for filling with cosmetics such as blusher, or, recently, a shallow concave formed in a thin plate to form a cosmetic-filled concave. A card-type container is used as one unit, and the shape of the container itself or the shape of the cavity filled with cosmetics is simple or complicated, and it is a product that produces and sells a considerable amount in large quantities. Since it is not a single product, it is one of the production technologies that requires the efficient mass production of this container.

Examples of conventional general production methods suitable for mass production of such cosmetic filling containers include the following.

(1) A blanking die is formed according to the filling shape, a thick material is punched into the shape, and a bottom plate is bonded with an adhesive, heat fusion, or the like when a bottom is required.

(2) If the material is a plastic material, a die for press embossing is made and the plate material is press-molded.

(3) Make a mold and cast it.

(4) If it is a plastic material, a mold for injection molding or a mold for vacuum molding is prepared and molded.

By the way, considering the consumer needs in recent years, even in the cosmetic product field targeted by the present invention, even if the product has the same application and function, various kinds of patterns and color schemes are changed for individualization and differentiation, There is a need to provide a wide variety of products, and in order to respond to such demands, it has been required to develop a member manufacturing technology capable of efficiently performing multi-product small-lot production. ing.

As a technology for manufacturing a single container, for example, a method of cutting a thin plate can be considered, but if a small lot production requires a quantity on a commercial mass sales scale, a single product is manufactured. Even if a cosmetics-filled container is manufactured using such a processing technique, it is not profitable in terms of cost.

(Problems to be Solved by the Invention) In view of the above situation, the present inventor has developed a container suitable for small-lot production of containers having cavities for filling various cosmetics, and container manufacturing. The present inventors have made intensive studies to develop a method and have accomplished the present invention.

That is, when providing cosmetics products by press-filling or pouring a cosmetic or cosmetic makeup into a metal or plastic dish-like container such as stainless steel or aluminum, the dish generally serves as a container. It has a circular, rectangular or triangular shape. The fact that such a container can be efficiently and inexpensively provided as a container for filling cosmetics having a concave portion of an arbitrary figure or pattern is very important for cosmetics, which have recently become one of fashionable products. Are desirable as described above.

Therefore, in the present invention, first, a container material that can freely and easily form a desired figure or pattern as a concave portion for filling cosmetics without using a mold that requires a cost and a production period, and a method of manufacturing the container are studied. A technique for producing a printed wiring board that has completely different uses and fields from the present invention,
Alternatively, they considered applying flexographic printing plate making technology. Although these techniques are not intended to manufacture containers for filling liquids or solids, the photoresist is exposed through a mask having a positive or negative image of the desired micropattern, developed, and uncured. Wash and remove
It is a common technique in a broad sense in that irregularities are formed on a plate by etching in some cases, and has a feature that a fine pattern can be suitably applied.

The inventor of the present invention has made further studies in order to apply such a technique to a technique for producing a container, and has accomplished the present invention.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the various problems as described above, and it is an object of the present invention to enable the manufacture of containers of small lots and many kinds, and to reduce the burden of mold production costs. Is to provide.

Further, the present invention can quickly and accurately produce a container having a complicated pattern shape, and furthermore, as a cosmetic container, is chemically and physically stable, and has sufficient chemical resistance, heat resistance, surface hardness and the like. An object of the present invention is to provide a container which satisfies the need and which can protect and decorate the surface of the container.

Still another object of the present invention is to provide a novel cosmetic filling container in which the filling area can be freely set and the depth (thickness) of the concave portion can be easily selected.

(Means for Solving the Problems) The feature of the cosmetic container according to the present invention made for the purpose of realizing the above object is generally that of a flat substrate and that the substrate is exposed through a mask. And a plate-making layer made of a photosensitive resin in which a cavity for filling a cosmetic of a predetermined pattern is formed by washing and removing an unexposed portion later, and more preferably, the top surface of the plate-making layer is covered with a surface layer. It is in the structure of having made it.

In the above configuration, the substrate serving as the bottom of the container is not particularly limited to other conditions, other than satisfying the mechanical strength as the bottom of the container and the water resistance to the washing operation for producing the plate making layer, for example. Examples thereof include various metal plates such as aluminum and iron, plastic sheets, plastic laminated paper and the like.

The plate-making layer that provides a cavity for filling cosmetics is sufficiently cured by exposure to light, and is chemically stable to the cosmetics filled in the cavities and mechanically stable to the filling conditions of the cosmetics. It is necessary to have a sufficient adhesive strength with the substrate as it is. As a photosensitive resin material for forming a plate making layer satisfying these conditions, for example, Japanese Patent Publication No. 55
Examples include cyclized polyisoprenes, modified polyamide resins, acrylic photopolymerizable monomers, and polyvinyl alcohol derivatives as described in JP-B-13018, JP-B-55-34931, JP-B-56-1618, and JP-B-56-49344. can do. These photosensitive resins may be used in liquid form, but it is preferable to use those formed in a dry sheet to a predetermined thickness in advance from the viewpoints of dimensional control, plate making speed, air bubbles, foreign matter mixing and the like. It is.

In the above configuration, the coating of the surface of the plate making layer with the surface layer is performed for the following purpose.

One of them is for the purpose of preventing foreign matter from being mixed in the cosmetic material filled in the cavity. That is, the walls and the like constituting the cavity are a layer of a photosensitive resin agent, a layer of an adhesive, and a substrate, which are basically substantially non-toxic and therefore sufficiently safe for this type of container. However, in view of the fact that the cosmetic is applied to the skin and used, it is preferable to apply an inner surface coating of the cavity for the purpose of preventing the invasion of foreign matter.
Such treatments include acrylic paints, lacquer paints, epoxy paints, varnishes, UV
It is preferable to apply and dry ink or wax as a raw material for cosmetics by spraying, dipping, curtain coating or the like.

Further, one of other purposes of the surface coating is to decorate the relief surface (top surface).

That is, the photosensitive resin layer is a colorless and transparent material having no shielding property because it undergoes a curing reaction upon receiving ultraviolet rays, but is generally used. It is common to paint. Thus formed, for example, plate-like (card-like)
The container is entirely antihalation paint color (usually yellow)
Present. In this case, the ground color may be used as it is, but the top surface of the relief that divides the portion filled with cosmetics may be appropriately colored to perform a color scheme such as enhancing the color of the cosmetics. It has the advantage of increasing value.

Yet another purpose of the surface coating is to impart oil repellency to the relief top surface.

That is, for example, when filling cosmetics into a cavity having a relatively shallow relief and a complicated figure, the flowability of the contents and the easiness of handling until the solidification and fixing of the fillers are considered to be high in production efficiency of this kind of consumption. Is a big problem,
For example, when filling an oily substance, it is necessary to consider the surface tension or wettability of the container. Here, the lipstick-based wax is 50 to 60 dyn / cm, and the solvent-fluidized eye shadow composition is 30 to 50 dyn / cm. It is desired to apply an oil-repellent substance to the top surface of the container from the viewpoint of productivity as described above. For such a treatment, for example, a silicone resin, a fluororesin, or the like is suitably used, and this can be applied by screen printing, transfer coating, roller coating, or the like.

The production of the container of the present invention is typically, for example, the following to
It can be performed as follows.

A negative film is prepared in advance so that one or a plurality of figures can be taken in large numbers, and is laminated (coated or coated) on the substrate 2 as shown in FIG. 2 so as to obtain a predetermined depth of, for example, 0.5 to 7.0 mm. The negative film 1 is superimposed on the photosensitive resin layer 3 which has been adhered) and exposed.

Next, the photosensitive resin of the unexposed uncured portion 3 ₂ is sufficiently washed out, and post-curing is sufficiently performed later, and the cured portion 3 ₁
Is completely cured to produce a container having the pattern shown in FIG. 1, for example.

Further, if necessary, the surface of the relief (the portion where the photosensitive resin has been cured) is printed and coated by screen printing or the like, so that the surface is prevented from sticking and has a coloring effect.

Further, if necessary, as a product finishing treatment, the whole is surface-treated with wax, silicone resin, fluororesin or the like to impart safety and surface contamination prevention.

If the relief depth of the container obtained above is insufficient (one exposure plate making depth is usually about 7 mm), the third
As shown in the figure, a plate making layer 4 having a cavity of
On top of this, a photocured relief piece (corresponding to a plate-making layer without a substrate) 5 made with a negative film having the same pattern as above is laminated and adhered to obtain a cosmetic container having a deep cavity depth.

First, using a thermoplastic resin sheet such as hard PVC, polyethylene, or polypropylene as a substrate, a container having a plate-making layer 6 and a horizontal bottom is preformed according to the above steps.

Next, using a mold 7 having the same cavity,
The bottom of the cavity of the flat substrate made of the thermoplastic resin sheet of the preformed container is recessed by a vacuum forming method (see FIG. 4).

As a result, a container having a cavity volume approximately doubled is obtained.

In this case, as the mold 7 used for the vacuum forming method, a mold manufactured by the above method using the same negative film and a metal plate as a substrate can be used.

A first base plate having a plate making layer formed by a method described above so as to have an inverted negative image of a cavity on a metal substrate
10, and a second base plate 9 having a plate-making layer formed in the same manner so as to have a normal rotation negative image, respectively, and using this as an embossing mold, the base plate of the container is obtained. The substrate is press-formed to first produce a base substrate 11 with irregularities (see FIG. 5).

Next, a photosensitive resin sheet 12 is fixed onto the press-formed base substrate 11 with irregularities, and the normal rotation negative film 1 is further stacked thereon so as not to be shifted from a predetermined position. Exposure plate making according to As a result, a container having the same frame depth but twice the container depth is obtained.

(Examples) Hereinafter, the present invention will be described based on examples shown in the drawings.

Example 1 A butterfly shape was designed in a square surface of 97 mm wide (this design is divided into 23 sections by veins and contours). A negative film finished with a negative density of 3.0 or more was prepared using an A2 size art paper under the stencil with 24 imprints of this pattern.

Next, a commercially available photosensitive resin sheet “Rigilon,” which has an adhesive and an antihalation layer applied on a steel substrate,
MX II-145 "(manufactured by Tokyo Ohka Kogyo Co., Ltd.) was adhered, and a plate-making layer having a cavity with a relay height of 1.1 mm was formed according to the following procedure.

Exposure conditions: Exposure was performed for 3 minutes using a 40 W chemical lamp having a wavelength of 250 to 430 nm.

Washing conditions: Uncured water-soluble photosensitive resin was washed out with a brush-type washing machine (liquid temperature: 30 ° C., 5 minutes).

Draining and drying: After draining with compressed air, it was dried with a hot air circulation dryer at 90 to 100 ° C for 10 minutes.

Post-exposure: Exposure hardened with the above chemical lamp for 10 minutes.

Further, in this example, the following post-treatment was further performed as a cosmetic container.

Surface coating: Silk-printing the upper surface of the relief with black ink,
Dry at room temperature.

Surface protection: A commercially available spray type "Scotch card" (silicone resin) was sprayed and applied on the entire surface.

Cutting: Place masking film, cut into 97mm square, 24
One card container was obtained.

The container for filling cosmetics obtained as described above was placed on a hot plate, and then a pouring type lipstick was heated and melted at 80 ° C. and poured into a predetermined concave portion (cavity) of the container. After cooling to room temperature, a lipstick cosmetic with a colorful butterfly pattern in a mosaic pattern was obtained.

Example 2 A composition was created in which eight kinds of floral patterns designed on an A4 size art paper were arranged at equal intervals (the pattern outer dimensions were
53mm / 86mm).

From this block copy, two kinds of negative having a negative density of 3.0 or more, which are the reverse of the normal negative and the positive negative, were prepared.

Base board made of aluminum (thickness 0.6mm), relief thickness
2.1mm (2.7mm total thickness) photosensitive resin sheet "Rigilon MX I
I-270 "(manufactured by Tokyo Ohka Kogyo Co., Ltd.) was prepared in A4 size.

Next, in the same procedure as in Example 1, a pair of plate-making original plates in which the recesses and the recesses were reversed were obtained.

Exposure conditions: Exposure for 4 minutes with a 40 W chemical lamp having a wavelength of 250 to 430 nm.

Washing conditions: The uncured water-soluble photosensitive resin was washed out with a brush-type washing machine. (Liquid temperature 30 ° C, 7 minutes).

Draining drying: After draining with compressed air, dry with a hot air circulating drier at 100 ° C for 30 minutes.

Post-exposure: Exposure curing was carried out with the above-mentioned chemical lamp for 20 minutes.

Next, a polypropylene coated paper having a thickness of 0.6 mm and 0.1 mm on both sides was prepared, and was embossed with a press equipped with the above-described set of plate-making master plates to obtain a sheet having an embossed portion of about 2.0 mm. The pressing conditions were 200 kg / cm ² at 80 ° C. for 3 minutes.

Next, an adhesive (“Nylon Screen Surcoat”; manufactured by Tokyo Ohka Kogyo Co., Ltd.) is applied to the convex portions of the embossed sheet with a roller, and a photosensitive resin sheet “Eraslon H-20” is applied.
0], and the first eight negative-type film negatives placed on top of each other were aligned and layered, and processed in the same manner as in Example 1 to obtain a relief thickness of 2.0 mm and an emboss depth of 2.0 mm.
A container having a recess of 4.0 mm was obtained. This was punched into eight predetermined sizes to obtain card containers having eight different patterns.

The containers formed as described above have different color schemes,
A liquefied filling type eyeshadow made by Chanson Cosmetics Honpo was filled. After drying, a variety of cosmetics with different designs and colors were obtained.

(Effects of the Invention) According to the present invention, it is possible to easily and quickly produce a container for filling cosmetics having a cavity with a complicated shape even in a small lot, and to meet the demands of small lots and many kinds. As a production technique capable of supplying containers at low cost, its usefulness is extremely large.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an example of the outline of the configuration of a container for filling cosmetics according to the present invention, FIG. 2 is a view for explaining a state when a plate making layer is produced, and FIG. FIG. 4 is a side view showing a production outline of an example of the container, and FIG. 4 shows a production outline in which a cavity portion of the preformed container in which a plate-making layer is formed on a flat substrate is recessed by vacuum forming. FIG. 5, FIG. 5 and FIG. 6 are views for explaining a container forming method in which a substrate is formed in advance with irregularities and a plate making layer is formed on the irregular substrate, and FIG. FIG. 6 is a diagram for explaining press molding, and FIG. 6 is a diagram for explaining a production outline in the case of forming a plate making layer on the uneven substrate after the press molding.

Claims (6)

(57) [Claims] 1. A plate-like substrate and a photosensitive resin material fixed on the substrate, and after exposure through a mask, unexposed portions are removed by washing to form a cavity for filling a predetermined pattern of cosmetics. A container for filling cosmetics, comprising a formed plate-making layer. 2. The container for filling cosmetics according to claim 1, wherein the top surface of the plate making layer is covered with a surface layer. 3. The container for filling cosmetics according to claim 1, wherein the surface layer is a colored layer. 4. The container for filling cosmetics according to claim 1, wherein said substrate is any one of a metal plate, a plastic sheet and a film laminated paper. 5. A cosmetic filler according to claim 1, wherein another plate making layer having a through-hole type cavity of the same pattern is stacked and fixed on said plate making layer. Container. 6. A plate-making layer having a through cavity of the same pattern formed on a substrate in which a bottom of a cavity of a predetermined pattern is formed by press molding or vacuum molding. 5. The container for filling cosmetics according to any one of items 4 to 4.