JPS58174595A - Surface treatment of aluminum shape - Google Patents

Abstract

PURPOSE:To obtain an Al shape with high decorative effect, by a method wherein a dark color alumite film is formed on the surface of the Al shape and a light color paint is thinly applied on said alumite film in the corner of the shape. CONSTITUTION:An Al shape is, for example, a member with an almost rectangular cross area having a groove 2 and equipped with corners 3 extending to a longitudinal direction thereof at four places of the outer surfaces 4. A separate member is inlaid with the groove 2 in a fittings assembled state and the end surface 5 is concealed by a separate member. To this shape 1, alumite treatment is at first applied to the surfaces 4 or other surfaces to form an alumite film 6 with a dark color such as a bronze color on the surfaces 4. In the next step, the shape 1 is hung vertically as shown by the drawing and a paint with a light color such as a white color or a light brown color is applied thereto. In this case, the paint is selected from an urethane or an acrylic paint and coated by air spraying. Thus formed low viscosity coating film 7 has a film thickness (t) thinner than the film thickness T of each surface 4 at each corner 3 thereof by the surface tension of said paint and, because the color of the film 6 is embossed through the translucent film 7, each corner 3 is viewed as bordered by that color.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention describes a method for applying a colored layer to the surface of an A/lium profile to improve its decorative properties.

At present, aluminum extrusion materials are beginning to be widely used for frames of doors and other fittings such as sliding doors. In this way, the mold material is colored to improve its wearability.
In general, conventional coloring methods can only color the entire surface of the molding material in a uniform color, so depending on the consumer's preference during the use of the molding material, it may not be possible to obtain a sufficient decorative effect.

The present invention attempts to obtain a colored state with a high decorative effect by embossing a dark color on the corners of the mold material, and as a rounding method, the surface of the aluminum mold material is coated with a single color aluminium.
9% Figure IJiii is characterized by forming a film, then painting the above surface with a light-colored paint, and thinning the thickness of the film at the corners of the shaped material due to the surface tension of the paint.
K) The explanation is as follows.

In the igx diagram, which is a partial diagram of @m, aluminum
For example, it is a member having a generally rectangular cross section having #2, and is provided with a longitudinal direction KW and a hinge angle 3 of the shape material 1 at four soldering places on the outer surface 4. Another member is fitted into #2 when the embroidery tool is in the upright state.]
Moreover, the end face 5 of the entire material is hidden by another material.

In the present invention, the surface 4 and (
Although not particularly necessary), an alumite sensitive layer is applied to the other #IK by a decoloring method or a natural coloring method, and an alumite film 6 (stripes 2) of a single color such as bronze color is formed on the surface 4.

Next, hang the K1l1 material 1 vertically as shown in Fig. 1 O.
Paint as shown in Table 4 with a light-colored paint such as light brown 6 medium gray. In that case, the paint is urethane-based medium acrylic (R) V-based paint, and the painting is done by air spray painting or electrostatic self-applying. (Also, use commercially available paint as a solvent for normal use)
It is more effective to dilute MotabK and apply the coating with the viscosity lowered. As a specific example, if the corner 30 radius of curvature is about 1ff or less, the volume of commercially available paint is about 4
Depending on the paint, it may not be necessary to increase the dilution rate.

As shown in Figure 2, which is a schematic enlarged cross-sectional view, the low-viscosity coating 7 formed by the above-mentioned coating 111 has a thin lA thickness t at corner 3 due to its own surface tension. Table 1jj44C& The metal thickness T becomes thicker. Therefore, the appearance of the profile l is a thick leprosy on the surface 4 other than the corners 3.
The parts are colored only in 170 colors (light colors), and the corners 3 are coated with alumite skin through a thin translucent 0IIl grade 7.
[The bronze color of s is raised in the shape 11, and the overall appearance appears to be that the light-colored mold material 10 corners 3 are edged with a dark-colored coating.

After the painting is completed, the shaped material is heated in a hot air drying oven or an infrared drying oven, and subjected to *#drying.

Also, the lower end of the mold material 1 has a large amount of paint flowing down and is cut and removed.

As explained above, according to the present invention, a dark-colored alumite film 6 is formed on the table 1i4 of the A/minium heather material 1,
Next, the surface 4 is coated with a low-viscosity, light-colored paint, and the thickness of the membrane at the corners 3 of the molded material 1 (2) is thinned due to the surface tension of the paint, and an alumite skin is applied to the corners 3! [6 colors! ! ! 1
Since I made the K so that it stands out through the 117, I was able to finish the appearance with a light color bordered with a dark color, and I was able to obtain a material with a wire mounting effect.

! jiK As another example, the surface 4 of the mold material l is shown in FIG.
： Like K[! 1fliIO was established), (b)
With the convex part 11 as shown in the figure, it can be applied to items with high decoration such as dark and light colored two-tone cuff t-shirts.

[Brief explanation of the drawing]

Figure 1 is a partial view of the mold material, Figure 2 is a cross-sectional enlarged schematic diagram, and Figure 3 is an enlarged cross-sectional schematic diagram of another embodiment. 1-
・Shape material, 3-corner, 4-・Surface, 6... Alumite film, 7... Coating film Patent applicant Nippon Ayuni Umu Kogan Co., Ltd.

Claims (1)

[Claims] A dark-colored alumite film is formed on the surface of the aluminum brazing material, and then the above surface is painted with a light-colored paint that is thinner than the colored alumite film. 1. A method for surface treatment of an aluminum mold material, characterized in that the coating thickness is set to 0.00000, and the color of the alumite film stands out through the coating at an upward angle.