JPS59188499A - Ornamental shape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a decorative molded product made of synthetic resin or the like, in which a part of the molded product is decorated with characters, patterns, etc.

Conventional technology (1) Conventionally, decorative parts such as plated letters and patterns were added to a part of a molded product made of synthetic resin, etc., to further increase the durability of the molded product or to cover weld marks and flow marks. When making a decorative molded product in which areas outside of the decorative parts of the molded product are painted to improve its appearance, first plate the entire surface of the molded product, and then apply the coating to the decorative parts. The method used was to mask the surface and paint the entire surface. In this case, in order to separate the masked decorative parts such as letters from the painted surface, at least Q, 5
It was normal to take a step higher than a fight.

However, in this method, it was necessary to form a step between the decorated part and the painted surface, so the surface of the finished decorated molded product lacked a sense of unity. In addition, this method has the drawback that even if only a part of the decorative molded product is to be formed with a plated decorative part, the entire molded product must be plated, which increases the cost of the product. Ta.

Objective (2) The objective of the present invention is to improve the sense of unity between the decorative part on the surface of a decorative molded product and the parts other than the side surface (this also reduces the weight and cost of the product). It is an object of the present invention to provide a decorative molded product that can be made down.

EXAMPLE Hereinafter, an example embodying the present invention will be described with reference to the drawings. First, a decorative body 1 made of synthetic resin or rubber as shown in FIG. 1(a) is formed.
Decorative parts 2 such as arbitrary characters and patterns are formed protrudingly on the face plate, and leg parts 3 of the lower face plate are protrusively formed. Next, as shown in FIG. 1(b), a masking 4 is formed on the upper part of the decorative part 2 by nickel electroforming, and as shown in FIG. 1(c), A coating film 5 made of acrylic vinyl chloride resin is formed on the surface, and then the masking 4 is removed as shown in FIG. 1(d), and the exposed decorative portion is removed as shown in FIG. 1(e). A decorative body 7 is formed by forming a plating film 6 made of metal such as chromium on 2.

Next, this decorative body 7 is set as shown in FIG. Insert molding is performed. When setting the decorative body 7, the decorative body 7 is fixed to the cavity 11 of the lower mold 10 with double-sided adhesive tape or positioning pins. And as shown in FIG. 4, the decorative portion 9 of the decorative body 7 is exposed on the surface of the molded product main body 12.

A decorated molded product is formed as described above, but in the present invention, since the decorative portion 9 of the decorative body 7 and the upper surface of the molded product main body 12 are the same, the upper surface of the decorated molded product can improve the sense of unity. In addition, in the present invention, since the plating film 6 is partially provided on the decorative portion 2 of the decorative main body 1, compared to a decorative molded product where a plating film is formed on the entire surface of the decorative main body 1, the Since the boundary between the decorative body 1 made of molded product and the molded product body 12 is similarly coated with a resin coating 5, the adhesion is improved. In addition, due to repeated thermal shock tests, in the case of a fully plated product, separation is likely to occur at the boundary between the top surface of the decorative body 1 and the molded product body 12, but with a partially plated product (4), the plated part is separated from the decorative part. Separation at the boundary will occur (become thicker) if it is placed only near the top surface of 2 (approximately 0.5 to 1 depth).

Furthermore, since the plating film 6 of the present invention is not exposed on the back surface of the decorative main body 1, products such as moldings can be easily adhered with double-sided adhesive tape. On the other hand, in the case of a fully plated product, adhesion between the adhesive tape and the resin or chromium plating film is required, so there is a problem in the performance reliability of the adhesive tape used for both metal and resin. Furthermore, in a partially plated product such as the one of the present invention, the plating film having a large specific gravity can be reduced, and as a result, the weight of the product can be reduced.

Note that the present invention can also be embodied in the following embodiments.

(1) The process of masking 4 is omitted, and the coating film 5 is
Form as shown in Figure (d).

(2) The masking 4 and the coating film 5 are omitted, and the decorative part 2
Only the plating film 6 is formed on the upper part of the plate.

(5) Effects As detailed above, the present invention provides a decorative main body having a decorative portion such as arbitrary letters or patterns formed on the surface thereof, and a plating film partially applied to the surface of the decorative portion. and a molded product body obtained by insert-molding the decorative body, and the surface of the molded product body and the surface of the plating film are formed together. It is possible to improve the sense of unity between the decorated surface and the other surfaces, and also to increase durability, and also to reduce weight and cost.

[Brief explanation of the drawings] Figures 1 (a) to (e) are cross-sectional views showing the manufacturing process of the decorated body, and Figure 2 shows the decorated body shown in Figure 1 set in the mold. 3 is a sectional view of the decorative molded product, and FIG. 4 is a perspective view of the decorative molded product. Decoration main body 1, decoration part 2, masking 4, coating film 5, plating film 6, decoration body 7, decoration part 9, molded product main body 12° Patent applicant Toyoda Gosei Co., Ltd. (6) JP-A-59 -188499 (3)

Claims (1)

[Scope of Claims] 1. A surface (a decorated main body having a protruding decorative portion such as arbitrary characters or patterns, a plating film partially applied to the surface of the decorated portion, and the decorated main body) A decorative molded product, characterized in that the surface of the molded product body and the surface of the plating film are flush with each other. 2. The decorative molded product according to claim 1, wherein a coating film made of, for example, acrylic vinyl chloride resin is formed in between, excluding the plating film.