JPS6041708B2 - Manufacturing method for copper-covered rain gutters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that the surface of a copper foil 1 is colored by chemical treatment such as sulfidation or oxidation, and the copper foil 1 is placed around the outer periphery of a plastic pipe 2 so that the colored surface 3 is the outer surface. This method relates to a method for manufacturing a copper-covered rain gutter, which is characterized by pasting and then coating the outer surface with a transparent protective layer 4, and the purpose thereof is to obtain a copper-like down gutter at a low cost through a simple process. The purpose of the present invention is to provide a method for manufacturing copper-covered rain gutters.

Conventionally, when manufacturing copper-covered rain gutters based on plastic, the outer periphery of the plastic pipe was plated with copper, and then the outer periphery was sequentially colored and painted. is complicated,
Moreover, since the outer periphery of the pipe must be colored, it requires a larger space than processing a flat plate, and it also has the disadvantage that it is very difficult to perform the coloring process because it is processed on a curved surface. Ta.

The present invention aims to eliminate such conventional drawbacks,
A detailed explanation will be given below based on the attached page.

First, a flat sheet-shaped copper foil 1 is prepared. When it is thin, it may have a removable protective sheet on the back side. The surface of the copper foil 1 is subjected to chemical treatments such as sulfurization and oxidation to color the surface itself black or green as shown in FIG.
After drying, the copper foil 1 is attached to the outer periphery of, for example, a hard vinyl chloride or other plastic pipe 2, as shown in FIG. 2, with the colored surface 3 exposed to the outside. This attachment can be done by applying a suitable adhesive such as epoxy resin to the back side of the copper foil 1 and wrapping it around the outer circumference of the plastic pipe 2. The top and bottom should be in a straight line, similar to the grooved surface of the gutter, and the joint should be hidden behind the back surface during construction. Next, the colored surface 3 of the wrapped copper foil 1 is treated with a rust preventive agent if necessary, and then the outer surface is coated with a clear coating such as urethane resin or acrylic resin to provide transparent protection as shown in Figure 3. There is something covering layer 4. In the present invention, as mentioned above, in manufacturing copper-covered rain gutters mainly made of plastic pipes, the copper foil is colored in advance through chemical treatments such as sulfurization and oxidation, and this is applied to the plastic pipes. Since it is attached to the outer periphery and then a transparent protective layer is applied to the colored surface, there is no need to plate the plastic pipe, which conventionally required the most complicated process. It has the advantage that copper surface treatment can be applied to
Moreover, the coloring of the copper surface is not done by conventional curved surface treatment.
It can be easily performed as a flat surface treatment, and has the advantage that the entire process is simplified and a rain gutter with a luxurious copper-like decoration can be obtained at a low cost.

The present invention will be specifically described below based on examples.

〔Example〕

A copper foil with a thickness of approximately 100μ is immersed in a 1% potassium sulfide aqueous solution and passed through it to form black copper sulfide on the surface.After drying, an epoxy resin is applied to the back side of the copper foil to remove this copper sulfide. Copper foil was glued to the outer periphery of a hard polyvinyl chloride plastic vibrator so that the outer surface of the vibrator was exposed.

After that, an acrylic resin-based clear was applied and baked on the surface, and a copper decorative downpipe was obtained.

[Brief explanation of the drawing]

1 to 3 are schematic process explanatory diagrams of an embodiment of the present invention. In the figure, 1 is copper foil, 2 is plastic vibe, 3 is colored surface,
4 indicates a transparent protective layer.

Claims (1)

[Claims] 1 The surface of the copper foil is colored by chemical treatment such as sulfidation or oxidation, and this copper foil is pasted on the outer periphery of the plastic pipe with the colored side facing the outside, and then a transparent protective layer is applied to the outside surface. A method for manufacturing copper-covered rain gutters, which is characterized by: