JPS5912480B2 - Method for forming metallic patterns on the surface of synthetic resin molded products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a special metallic pattern on the surface of a synthetic resin molded article.

Caps, lids, container bodies made of synthetic resin,
In order to improve the appearance of molded products such as sheets and to give them a beautiful appearance, metallic transfer foil is used to decorate the outer surface with a metallic tone.

In addition, when forming a pattern on transfer foil, the transfer foil is specially processed to make specific areas matte, and the pattern is created by combining these matte areas with other glossy areas. However, even if matte processing is performed mechanically, there are limits to this processing, so it has been difficult to form special patterns.

The present invention was made in order to improve the above-mentioned situation, and its purpose is to create a synthetic resin molded product that can form special patterns that cannot be formed by mechanical processing, and that can also be easily processed. The present invention aims to provide a method for forming a metallic pattern on the surface of.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be sequentially explained below with reference to embodiments shown in the drawings.

First, as shown in FIGS. 1 and 2, the transfer object 1 is formed into a lid shape from thermoplastic synthetic resin, and the transfer object 1 has a top surface 2 and a corner portion 5 arranged around the top surface 2. Top surface 2
A side plate 3 is formed which is inclined at 90 degrees, and a screw portion 4 is formed inside this side plate 3.

First, in the first step, thermal transfer is performed on the top surface 2 of the transfer target 1. This will be explained with reference to FIG.
is fixed with the top surface 2 facing upward, and the lower side (transfer portion 6) of the transfer foil 7, which has a transfer portion 6 of metal foil such as aluminum vapor-deposited on the underside of the transfer film, is brought into contact with the top surface 2. , the upper side of the transfer film is rotated while pressing a pre-heated elastic rubber roll 8 such as silicone.
run in the direction of the arrow.

Then, the transfer portion 6 deposited on the transfer film is transferred to the top surface 2, and uniform transfer can be performed over the entire surface of the top surface 2.

Next, the transferred object 1 that has been thermally transferred to the top surface 2 is supported rotatably in an upright position, and the transfer portion 6 deposited on the lower surface of the transfer film is brought into contact with the side surface 3 of the transferred object 1 and heated. When the transfer portion 6 is pressed against the side surface 3 by the rubber 9 and the transfer foil 7 is moved in the direction of the arrow while rotating the transfer object 1 in this state, the transfer portion 6 is transferred to the side surface 3 of the transfer object 1. Uniform and reliable transfer can be performed on the side surface 3, which has been conventionally done.

In the present invention, a special pattern is applied to the surface 11 of the metal plate 10 by chemical treatment.As a specific example, the metal plate 10 made of a copper plate is corroded, and as shown in FIG. A special pattern is applied to the surface 11 of the plate 10 by corrosion, or a special pattern is applied to the surface 11 by chemically treating the surface 11 of the metal plate 10. In this way, the pattern created by chemical treatment cannot be processed mechanically. You can create unique special patterns that cannot be created with other methods.

Note that the metal plate 10 is not limited to a copper plate, and other metal plates, silicone rubber, heat-resistant synthetic resin, resin sheets, etc. can also be used as the material.

Then, the metal plate 10 with the special pattern formed on the surface 11 as described above is directly fixed to the heater 12 with the surface 11 facing outward (downward) as shown in FIG. , is indirectly fixed to the heater 12 via silicon (not shown), and the metal plate 10 is heated to 150 by the heater 12.
The surface 11 of the metal plate 10 is pressed against the transfer portion 6 transferred to the top surface 2 of the object 1 to be transferred while being heated in the range of .degree. to 250.degree.

Then, a special pattern that is the same as the pattern on the surface 11 of the metal plate 10 is formed on the transfer portion 6 of the top surface 2, and as described above, this special pattern is a unique special pattern, so it creates a novel metallic tone. Patterns can be formed.

Further, when forming a pattern on the side surface of the transfer target 1, as shown in FIG. 8, the surface of the metal plate 13 is
A special pattern is formed on the surface 14 of the metal plate 13 by chemical treatment, and as shown in FIG.
When the transferred object 1 is rotated while pressing it against the side surface 3 of the transferred object 1, the metal plate 1 is transferred to the transfer portion 6 transferred to the side surface 3.
A special pattern identical to the pattern on the surface 14 of No. 3 is formed.

In this way, a special metallic pattern can be formed on the top surface 2 and side surface 3 of the transfer target 1, as shown in FIG.

As described in detail above, the present invention involves transferring a metallic transfer foil onto the surface of a synthetic resin molding, and then heat-pressing a metal plate whose surface has been chemically treated with a special pattern onto the transferred molding. It is characterized by forming a metallic pattern.

Therefore, a special pattern identical to the pattern on the surface of the metal plate can be formed on the metallic transfer foil transferred to the surface of the synthetic resin molding, and since this pattern is a unique pattern that cannot be formed by mechanical processing, it is possible to form a special pattern on the metallic transfer foil transferred to the surface of the synthetic resin molding. It is possible to form novel metallic special patterns on the surface of objects, and it is relatively easy to process as it only requires chemical treatment on the surface of the metal plate and no mechanical processing is required. It has excellent effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a transfer object used in an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the same, and Figs. 3 and 4 show transfer foil on the top and side surfaces of the transfer object. Each explanatory diagram to be transferred, 5th
The figure is a longitudinal cross-sectional view of the object to be transferred to which the transfer foil has been transferred, FIG. 6 is a perspective view of one of the metal plates used in the present invention, FIG. 7 is an explanatory diagram of forming a pattern with the same metal plate, and FIG. 8 9 is a perspective view of the other metal plate used in the present invention, FIG. 9 is an explanatory diagram of forming a pattern using the same metal plate, and FIG. 10 is a perspective view of a container with a completed pattern according to the present invention. 1... Transferred object (synthetic resin molded product), 6...
...Transfer part, 7...Transfer foil, 10, 13...
...Each metal plate, 11.14...The surface of each metal plate.

Claims (1)

[Claims] 1. (a) A step of transferring a metallic transfer foil onto the surface of a synthetic resin molded product; (b) A special pattern is applied to the surface of the transferred metallic transfer foil by chemical treatment. 150~2 metal plates
a step of pressing under heating in a range of 50° C., and forming the special pattern on the surface of the synthetic resin molded product by both steps (a) and (b). A method of forming metallic patterns on the surface of molded products.