JPH0729516B2 - Method for manufacturing metal decorative plate having uneven pattern - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for producing a decorative metal plate having an uneven pattern.

(Prior Art) Painting on the surface of various plastic products and metal products by a transfer method has been actively used in recent years. In this way, when painting is performed by the transfer method, the surface strength is generally improved by providing a protective layer on the surface of the pattern. However, when this protective layer is provided on the pattern, there is a drawback that the surface gloss becomes uniform and monotonous.

For example, when the design is a wood grain pattern and the surface gloss is uniform and monotonous, it does not look like natural wood. for that reason,
The surface was given a physical treatment such as embossing to make it look similar to natural wood.

However, in the case of the base material or the metal plate, the thickness of the coating film provided on the metal plate is thin, and it is difficult to uniformly emboss the entire surface.

(Problems to be Solved) Even if the base material is a metal decorative plate, which is a metal plate,
It is an object of the present invention to provide a metal decorative plate whose surface has a uniform uneven pattern.

(Means for Solving Problems) The present invention is to form an arbitrary pattern on the surface of a heat-resistant substrate film with a matte varnish containing a thermosetting resin and a matting agent as main components, and heat it to form a pattern. 1 thermosetting resin phase is provided, the thermosetting resin of the same kind as the first thermosetting resin layer is applied to the entire surface, and the second thermosetting resin layer is provided in a semi-cured state. A transparent thermosetting resin different from the second thermosetting resin layer is coated on the entire surface, and a third thermosetting resin layer is provided in a semi-cured state, and a pattern layer made of ink is provided on the surface. As a transfer foil provided, the transfer foil is superposed on a metal plate having an uncured base coating film formed on the surface thereof, and after transfer, the heat-resistant base film is peeled and removed, and heating is performed. It is a method for manufacturing a metal decorative plate having a pattern.

(Operation) In the present invention, the first thermosetting resin layer forming the transfer foil is integrated with the heat resistant substrate film. Furthermore, since the second thermosetting resin layer is made of the same thermosetting resin as the first thermosetting resin layer and is in a semi-cured state, the adhesive force between the heat resistant base film and the second thermosetting resin layer is The adhesive force between the second thermosetting resin layer and the third thermosetting resin is smaller, and when the base film is peeled off, the portion of the second thermosetting resin that is in contact with the first thermosetting resin is peeled off. The remaining portion is left, and an uneven pattern is formed.

Here, the second thermosetting resin layer may or may not contain a matting agent, but in the case of containing the matting agent, the amount thereof is different from that of the first thermosetting resin layer, and it is preferably more than that of the first thermosetting resin layer. By setting the amount to include a small amount, the glossiness of the surface can be changed arbitrarily.

As the transparent thermosetting resin forming the third heat-modified resin layer, specifically, alkyd resin, polyester resin,
A silicone resin can be used, and in the semi-cured state, it has peelability from the second thermosetting resin layer, and if the adhesive force is larger than the adhesive force with the heat-resistant base film, the purpose is achieved.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings.

First, as shown in FIG. 1, the surface of a substrate film 1 made of a polyethylene terephthalate film having a thickness of 16 μm contains 10 parts by weight of a matting agent made of alkyd resin and futylated melamine resin and silica powder. A matte varnish was formed into a pattern. Next, it was cured in a heating oven at 150 ° C. to provide the first thermosetting resin layer 2 firmly adhered to the base film.

Next, a resin obtained by removing the matting agent from the matte varnish having the first thermosetting resin layer is coated on the entire surface using a solid plate of 175 lines / inch and dried in a hot air oven at 80 ° C. Then, the second thermosetting resin layer 3 in a semi-cured state was provided.

In addition, 200 resin containing saturated polyester resin as the main component
The entire surface was coated using a solid line / inch plate, and then the second thermosetting resin layer 4 in the semi-cured state was formed in the same manner.

Further, a picture-like picture layer 5 was formed with a gravure ink containing a vinyl chloride-vinyl acetate copolymer resin, a pigment and a solvent, and dried in a hot air oven at 80 ° C. to obtain a transfer foil A.

On the other hand, as shown in FIG. 2, the surface of the metal plate 10 made of an electrogalvanized steel sheet having a thickness of 0.5 mm is subjected to degreasing chemical conversion treatment, and then an epoxy resin-based primer agent is applied to the heating furnace at 250 ° C. Heat and dry in the inside, apply primer layer 11, further linear polyester coating, provide base coating film 12, 250 ℃
It was baked and dried in a heating furnace and cooled to 100 ° C.

In this state, the transfer foils A were superposed and pressure-bonded with a rubber roll.

Then, when the base film was peeled off, as shown in FIG. 3, the second thermosetting resin layer remained in the portion other than the portion where the first thermosetting resin layer was provided, and an uneven pattern was formed.

Then, the whole was hardened by baking in a heating furnace at 250 ° C. to obtain a metal decorative plate.

Comparative Example 1 At the same time, as a comparison, the transfer foil in the above-mentioned Example
A metal decorative plate was obtained in the same manner except that the thermosetting resin layer was not provided.

(Comparative Example 2) A metal decorative plate was obtained in the same manner as in Example except that a saturated polyester resin was used as the second thermosetting resin layer.

When the transfer, releasability and uneven pattern of each of the above decorative plates were examined, all were good in Examples, but in Comparative Examples 1 and 2, almost no uneven patterns were formed, and in Comparative Example 2, Peeling was difficult.

[Brief description of drawings]

The drawings show embodiments of the present invention. FIG. 1 is a sectional view of a transfer foil used in the present invention, FIG. 2 is a sectional view showing a state in which transfer foils are stacked, and FIG. It is sectional drawing which shows the state which peeled. (1) …… Base film (2) …… First thermosetting resin layer (3) …… Second thermosetting resin layer (4) …… Third thermosetting resin layer (5) …… Design Layer (10) …… Metal plate (12) …… Undercoat

Claims (1)

[Claims] 1. An arbitrary pattern is formed on the surface of a heat-resistant substrate film with a matting varnish containing a thermosetting resin and a matting agent as main components, and the pattern is heated to provide a first thermosetting resin phase, A thermosetting resin of the same type as the first thermosetting resin layer is applied to the entire surface, a second thermosetting resin layer is provided in a semi-cured state, and the second thermosetting resin is applied to the surface. A transparent thermosetting resin different from the resin layer is applied to the entire surface, and a semi-cured state is applied to provide a third thermosetting resin layer, and a pattern layer of ink is provided on the surface to form a transfer foil. On the metal plate with the uncured undercoating film formed on the surface,
After the transfer, the heat-resistant substrate film is peeled off and heated, and the metal decorative plate having an uneven pattern is characterized by heating.