JPS5818933B2 - Method for producing a plate-shaped body with a gloss-like luster - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a plate-shaped body having a gloss similar to that of an aluminum or copper plated plate whose plated surface is protected by covering with a transparent plastic film.

In order to manufacture such a plate-like body, it is thought that it can be easily obtained by adhering a transparent plastic film with aluminum or copper vacuum-deposited on one side to the substrate with the film side facing outward, but in reality, the film When stacking the film on a substrate, the film shrinks due to static electricity, making it difficult to adhere smoothly and making industrial mass production impossible.

Therefore, an object of the present invention is to eliminate the inconvenience of film shrinkage when stacking the film on a substrate, thereby making it possible to industrially mass-produce plate-shaped bodies having plating-like gloss.

That is, the present invention forms a laminated film by vacuum-depositing aluminum or copper on both sides of a transparent plastic film, adheres this laminated film to a substrate, and then deposits aluminum or copper metal on the outer surface of the laminated film. The layer is removed by chemical treatment.

As a transparent plastic film, the thickness is lO~30μ
Plastic films such as polyester, acrylic resin, and vinyl chloride resin can be used.

A thermoplastic plastic plate such as vinyl chloride resin, a plywood plate, or the like can be used as the substrate.

The vacuum-deposited metal film may have a thickness of about 10 to 40 μm.

To remove the metal layer on the outer surface, an alkaline hydroxide solution is suitable for aluminum, and a hydrochloric acid acidic ferric chloride solution is suitable for copper.

In the present invention, as described above, a laminate of transparent plastic with metal layers formed on both sides is stacked on a substrate and then bonded, so there is no effect of static electricity when stacking the laminate on the substrate, and it is smooth and smooth. Can be glued to.

Therefore, industrial mass production is possible.

In addition, in the plate-shaped body obtained by the manufacturing method of the present invention, the metal vapor-deposited layer can be seen through the transparent plastic film.
It has a metallic appearance and looks like a plated plate, and since the metal surface does not come into contact with air, it does not lose its luster over time, making it useful as a reflector and various decorative materials. It is.

Example 1 Aluminum was vacuum-deposited to a thickness of 40 μm on both sides of a 20 μm polyester film by a conventional method, and this was coated with a polyester adhesive on a vinyl chloride resin plate with a width of 90 crfL and a length of 180 °F to a thickness of 1. A 30% aqueous sodium hydroxide solution was sprayed onto the aluminum surface of the outer layer to dissolve and remove the aluminum, followed by washing with water until the alkalinity disappeared and drying to obtain a plate-shaped body having a gloss similar to aluminum plating.

Example 2 Example 1 except that copper was used instead of aluminum in Example 1, and a 40% aqueous solution of ferric chloride acidified with hydrochloric acid heated to 40°C was used instead of the 30% aqueous sodium hydroxide solution. A plate-shaped body having copper plating-like luster was obtained by processing in the same manner as in 1.

Claims (1)

[Claims] 1. A laminated film in which aluminum or copper is vacuum-deposited on both sides of a transparent plastic film is adhered to one or both sides of a substrate, and then the metal layer deposited on the outer surface of the laminated film is removed by chemical treatment. A method for manufacturing a plate-shaped body having a plating-like luster.