JPS60114375A - Structure of coated film for metallic coating - Google Patents

Abstract

PURPOSE:To obtain easily a metallic color on the surface by forming a coated film layer consisting essentially of a metallic component on a material to be painted and forming a thin coated film layer to the extent of permitting wiping away on the coated film layer. CONSTITUTION:A coated film layer 1 consisting essentially of a metallic component is formed on a non-metallic material A to be coated and a thin coated film layer to the extent of permitting wiping away is formed on the layer 1 in the structure of the coated film constituted by coating an org. solvent paint B contg. the metallic component and a synthetic resin component which is a binder for said metallic component on the material A. The coated film having the metallic color is thus easily obtd. on the surface by the simple operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coating structure for metal coating using an organic solvent-based resin paint in which a synthetic resin component is mixed with a metal component provided on an object to be coated.

Generally, the surface of a synthetic resin model is plated with metal to give it a metallic surface finish, which is often done by vacuum evaporation of the metal.

However, vacuum evaporation is very expensive;
There is a drawback that the product cost is high, and a solution to this point has been desired.

This invention was developed in view of the above circumstances, and the purpose of this invention is to propose a special coating film structure using a metal coating paint that can easily obtain a metallic color on the surface by simple operations such as rubbing. shall be.

That is, the present invention provides a coating structure in which an organic solvent-based paint containing a metal component and a synthetic resin component as a binder thereof is applied onto a non-metallic object. It is characterized by forming a coating layer made of components and forming a coating layer thin enough to be wiped off on top of this coating layer.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, reference numeral A indicates a molded product for a model, which was obtained by injection molding of synthetic resin. Paint B is applied to the surface of this molded product A, and paint layers 1 and 2 are formed by this paint B. The coating layer 1 is a coating layer mainly composed of metal components, and the coating layer 2 formed on this coating layer 1 is a coating layer mainly composed of synthetic resin components. The coating layer 2 made of a synthetic resin component is thin enough to be wiped off.

The coating film structure as described above can be obtained by configuring the coating material B according to the following component ratios.

Fine particle aluminum paste 15% Special acrylic resin 2% Organic solvent alcohol type 55% Cellsolve type 5% Hydrocarbon type 10% Ketone type 10% Additive 3% Of the above paint B, fine particle aluminum paste is equivalent to the pigment in general paints. Since it is made of aluminum in paste form, when this metallic component is applied onto an object, it emits a metallic color. Further, the special acrylic resin has a binder function that binds the fine particles constituting the aluminum paste. The organic solvent sufficiently dissolves the paint and fixes it on the object to be coated, and evaporates after application. Additives improve the physical properties of the coating film and make it smooth.

The above-mentioned paint B is applied onto a molded article A for a model, which is an object to be coated. First, the organic solvent evaporates, so after drying, the coating layers 1 and 2
are layered. The coating layer 1 is a coating layer made of a metal component mainly consisting of fine particles of aluminum paste, and the coating layer 2 layered on top of this coating layer 1 is a synthetic resin mainly consisting of a special acrylic resin. It is a coating layer based on the components. Incidentally, it is a well-known phenomenon that aluminum generally forms a mirror film on foreign materials. Among the components of Paint B, fine particle aluminum paste accounts for 15%, while special acrylic resin accounts for only 5%, so the coating layer 2 is extremely thin and can be wiped off with cloth, tissue paper, etc. It is formed as a fairly thin coating layer, and therefore, it appears as a matte coating film as if resin powder was sprinkled on top of the coating layer l. Therefore,
When this coating film 2 is rubbed with a cloth or the like, a glossy mirror surface made of fine aluminum particles is exposed from below, so that a coating layer 1 with a silver-colored shining metallic luster appears. The paint B can be applied by spraying, brushing, etc., and the paint film I can be removed very easily using cloth, tissue paper, etc., and no special force is required. On the other hand, the coating layer 2 is firmly bonded onto the molded model A by a part of the special acrylic resin.

According to the above-mentioned coating film structure, a metal coat can be easily and reliably applied to a non-metallic object.

Some conventional paints develop a metallic color, but the same silver color as above has the following component ratio.

Fine particle aluminum paste 15% Special acrylic resin 15% Organic solvent alcohol-based 40% Cellsolve-based 5% Hydrocarbon-based 25% As described above, conventional paints have a very high proportion of resin components as a binder for metal components. It is difficult to remove the surface coating layer, and it is not possible to obtain a deep metallic luster.

Next, by changing the combination of the metal component and the synthetic resin component, a coating structure that develops other colors can be obtained. For example, iron color can be obtained from a paint having the following component ratios:

Molybdenum disulfide 15% Special acrylic resin 6% Organic solvent alcohol-based 55% Cellsolve-based 5% Hydrocarbon-based 12% Additives 2% Gelling agent 5% In this case as well, apply to the object to be coated, after drying, H mainly consists of a coating layer consisting of fine particles of molybdenum disulfide and a thin coating layer that can be wiped off, so the upper coating layer can be easily removed by rubbing with a cloth or the like. The particles of molybdenum sulfide can be polished to create an iron color.

In addition, in the above-mentioned paint, it is preferable that the synthetic resin component serving as a binder for the metal component is 1 to 10% of the total amount. 1%
If it is less than 10%, the binding effect will be small, and if it exceeds 10%, it will be difficult to remove.

As explained in detail above, the present invention relates to a coating film structure obtained by applying a metal coating paint onto an object to be coated,
The above-mentioned paint is an organic solvent-based paint containing a metal component and a synthetic resin component that is a binder for the metal component. The coating layer is thin enough to be wiped off. Since the coating layer, which is mainly composed of synthetic resin components, can be easily removed by wiping, it is possible to easily expose the metal surface on the object to be coated, without the need for expensive vacuum deposition treatment. It can be metal coated easily and inexpensively.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a coating structure according to the present invention, and FIG. 2 is an enlarged sectional view of the coating structure. Symbol A: Molded product for models, B: Paint, l: Paint layer mainly composed of metal components, 2: Wipeable paint layer Patent applicant Takara Co., Ltd. Agent Patent attorney Mikio Segawa

Claims (1)

[Scope of Claims] A coating film structure for a metal coating obtained by applying a coating material for a metal coating onto an object to be coated, characterized in that it has the following requirements. (a) The above paint must be an organic solvent-based paint containing a metal component and a synthetic resin component as a binder. (b) In the above coating structure, a coating layer mainly made of metal components is formed on the object to be coated, and a coating layer thin enough to be wiped off is formed on top of this coating layer. That's what I'm doing.