JPS6017824B2 - Manufacturing method of metal pattern plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention can be used as a decoration itself, or can be applied to the surface of various molded products such as cosmetic containers to add shape to these molded products. The present invention relates to a method of manufacturing a metal pattern plate, and more specifically, to a method of manufacturing a metal pattern plate in which a metal pattern appears three-dimensionally on a flat plastic sheet.

Conventionally, metal pattern plates have been used to add metallic features to molded products such as by pasting them onto the surface of molded products such as cosmetic containers, or the metal pattern plates themselves have been used as decorative objects. However, conventional metal pattern plates of this type are manufactured by, for example, pressing an aluminum plate and then anodizing it. It is necessary to attach the plate in an uneven manner using a press or the like so that it has the desired pattern. Therefore, the resulting metal pattern plate has an uneven three-dimensional pattern with rising edges, which gives it a three-dimensional effect. Although it gives a certain feeling,
Since the plate surface was formed in an uneven manner, it was inevitable that it would give a complicated feeling.

As a result of various studies in view of the above circumstances, the inventors of the present invention have formed a synthetic resin plate with a three-dimensional pattern formed on it by pressing a transparent or semi-transparent thermoplastic resin sheet, and this When a resin plate coated with a vapor phase plating film such as a metal vapor deposition film is heated to a temperature above the softening point and below the melting point of the resin, the resin plate will only move in the direction in which the pattern rises, that is, in the thickness direction of the resin plate. As a result of the deformation, the rising edge of the above pattern disappears, and the resin plate becomes flat. When bracketing, there is almost no expansion or contraction deformation in the length or width direction of the resin plate, and the thickness of the resin plate returns to its original thickness. When the resin plate is held almost the same as the original state and becomes flat due to deformation in the thickness direction of the resin plate, a difference in density appears in the vapor phase plating film depending on the degree of unevenness of the rising pattern, As a result, even though the plate is flat, the difference in density and density creates a three-dimensional effect due to the difference in the refractive index of the incident light, resulting in a beautiful and very interesting metallic color pattern with a three-dimensional effect that corresponds to the rising pattern. The inventors have discovered that it is possible to easily obtain a metal patterned plate, and have come up with the present invention.

That is, in the present invention, a vapor phase plating film is formed directly or via an undercoat layer on one side of a transparent or translucent thermoplastic resin plate on which a three-dimensional pattern is formed with a rising edge, and then the resin plate is coated with this resin. The present invention provides a method for producing a metal pattern plate, characterized in that the resin plate is shaped into a flat plate by heating the resin plate to a temperature not lower than the softening point and lower than the melting point.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. First, in carrying out the present invention, a thermoplastic resin plate 1 having a three-dimensional pattern formed thereon with the rise shown in FIG. 1b is produced.

To make the resin plate 1, as shown in the drawing, a transparent or translucent, colorless or colored thermoplastic resin sheet 2 made of polyvinyl chloride, polymethyl methacrylate, AS resin, polyethylene terephthalate, etc. is shaped into a desired pattern. This is done by cold or hot pressing using a press mold in which the concave and convex portions to be formed are carved. As a result, uneven portions 3 are formed on the sheet 2, and a transparent or translucent thermoplastic resin plate 1 having a three-dimensional pattern due to the uneven portions 3 is obtained. Note that the formation of the thermoplastic resin plate 1 is not limited to the above-mentioned pressing method, but may also be performed by other plastic working methods, or may be performed by extrusion molding, injection molding, vacuum forming, or the like. Next, a transparent or semitransparent colorless or colored undercoat layer 4 is formed on one side (back side) of the transparent or semitransparent thermoplastic resin plate 1 using a thermoplastic resin paint or the like, and on this undercoat layer 4. A vapor phase plating film 5 of a metal color such as aluminum is formed on the surface.

This vapor phase plating film 5 is usually formed by a vacuum spraying method, but may also be formed by a cathode sputtering method or an ion plating method. Furthermore, a top coat layer 6 is formed on the vapor phase plating film 5 using a thermoplastic resin paint or the like, and the resin plate 1 is thus formed as shown in FIG. 1C.
An undercoat layer 4, a vapor phase plating film 5, and a topcoat layer 6 are sequentially formed on one side of the resin plate 1 in correspondence to the uneven portions 7 which are reversed with respect to the uneven portions 3 of the resin plate 1. Then, as described above, the undercoat layer 4, the vapor phase plating film 5,
The resin plate 1 on which the top coat layer 6 has been successively formed is heated for a predetermined period of time at an appropriate temperature from above the softening point to below the melting point of the resin.

As a result, the resin plate 1 is deformed in the rising direction of the pattern (the uneven portions 3), that is, in the thickness direction of the resin plate 1, and the uneven portions 3 and the uneven portions 7 disappear to become flat. In this case, the resin plate 1 undergoes almost no expansion or contraction deformation in the length direction or width direction, and only deformation occurs in the width direction, and the thickness W of the resin plate is maintained almost the same as in the original state. Ru. Simultaneously with the deformation of the resin plate 1 in the thickness direction, the undercoat layer 4, vapor phase plating film 5, and top coat layer 6 are also deformed in the thickness direction, and the whole becomes approximately flat. , the vapor phase plating coating 5 in the portions corresponding to the convex portions 7a of the uneven portions 7 of the resin plate 1 becomes a thin film layer 8a, and the vapor phase plating coating 5 in the portions corresponding to the concave portions 7b becomes a thick film layer 8b, In this way, the metal pattern plate 9 is manufactured by forming a difference in density depending on the degree of unevenness of the uneven portion 7. The thus obtained metal pattern plate 9 exhibits a three-dimensional effect due to the difference in density of the vapor phase plating film 5 (the thin film layer 8a and the thick film layer 8b) and the difference in the refractive index of the incident light. A three-dimensional metallic color pattern similar to the metallic three-dimensional pattern obtained when a vapor phase plating film 5 is formed via an undercoat layer 4 on the plane of the thermoplastic resin plate 1 on which a three-dimensional pattern is formed. In this case, since the metal pattern plate 9 is formed into a flat plate shape, a beautiful and very interesting three-dimensional metal color pattern is formed without any complicated appearance.

Note that when the thermoplastic resin plate 1 and the undercoat layer 4 are colorless and transparent, this three-dimensional metal color pattern shows the color of the vapor phase plating film 5 itself on the outside, and the thermoplastic resin plate 1 and the undercoat layer 4 are transparent. When at least one of the coating layers 4 is colored, this color and the color of the vapor phase plating film 5 appear in harmony with each other. The metal pattern plate 9 can be used as a rhombus itself, or can be attached to a container or the like, giving a beautiful and luxurious effect.

As explained above, according to the present invention, a vapor phase plating film is formed directly or via an undercoat layer on one side of a transparent or semitransparent thermoplastic resin plate on which a three-dimensional pattern is formed with rising edges, The metal pattern plate can then be manufactured by a very simple method of heating the resin plate to a temperature above the softening point and below the melting point of the resin to make the resin plate into a flat plate. Regardless of whether it is a flat plate, a difference in density is formed in the vapor phase plating film depending on the degree of unevenness of the raised pattern, and a metallic color pattern with a three-dimensional effect similar to the raised pattern is formed, making it beautiful and beautiful. Since the plate is flat, an interesting three-dimensional metallic color pattern can be obtained without making it look complicated.

[Brief explanation of the drawing]

1A to 1D are schematic sectional views sequentially illustrating an example of the manufacturing process of a metal pattern plate according to the present invention, and FIG. 2 is a plan view showing an example of a metal pattern plate obtained according to the present invention. 1... Thermoplastic resin plate, 3... Uneven portion, 4...
...undercoat layer, 5 ... vapor phase plating film, 8a ... thin film layer, 8b ... high film layer,
9... Metal pattern plate. Figure 1 Figure 2

Claims (1)

[Claims] 1. A vapor phase plating film is formed on one side of a transparent or translucent thermoplastic resin plate on which a three-dimensional pattern is formed, either directly or via an undercoat layer, and then the resin plate is heated to a temperature higher than the softening point of the resin. A method for manufacturing a metal pattern plate, comprising heating the resin plate to a temperature below its melting point to make the resin plate into a flat plate.