JP2002127691A - Molding and image forming method thereonto - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding and an image forming method thereonto, in which an image does not disappear unintentionally but is clearly displayed. SOLUTION: A colored layer 2 is formed on the front surface of the molding 1. In addition, a covering layer 3 for covering the colored layer is formed on the front surface of the colored layer. Also under the state that the covering layer 3 is irradiated with laser beam LB, a through hole part, by which a predetermined image is displayed, is formed on the covering layer, resulting in exposing some part of the colored layer through the through hole part to the front surface side of the covering layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded article displaying various images such as letters, numbers, symbols and figures, and a method of forming an image on the molded article.

[0002]

2. Description of the Related Art For example, casings and fishing rods of portable telephones are generally formed of synthetic resin or the like, and a desired image such as a company name, a trademark, a figure or a product number is formed on the surface of these molded products. Conventionally, a method of printing a predetermined image on the surface of the molded product has been adopted for display.

[0003]

However, in the above display method, since the image is simply printed directly on the surface of the molded article, the image is printed on the surface of the molded article with the use for many years. There are disadvantages such as the damaged image or disappearing in some cases.

[0004] In addition, if the name of the purchaser and the like are individually printed for each purchased item by a printing device, there is a problem that the printing cost becomes extremely high due to the production of plates and the like.

The present invention has been developed in view of the above circumstances, and has as its object to provide a molded article in which images are clearly displayed without being accidentally erased and a method of forming an image on the molded article. Is to provide.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a colored layer is formed on the surface of a molded article, and the surface of the colored layer is covered with the colored layer. By forming the layer and irradiating the coating layer with a laser beam, a through-hole on which a predetermined image is displayed is formed in the coating layer, and a part of the coloring layer is formed on the surface of the coating layer through the through-hole. It was exposed to the side.

According to a second aspect of the present invention, a coating layer is provided on the surface of a yarn colored in a predetermined color, and the yarn is wound around the surface of a molded product to form a wound yarn layer on the surface of the molded product. By irradiating the winding layer with a laser beam, a part of the coating layer is removed, and a predetermined image represented by the color of the colored yarn is exposed on the surface side of the winding layer. .

According to a third aspect of the present invention, there is provided a method of forming an image on a molded article, wherein a colored layer is formed on the surface of the molded article, and a coating layer is formed on the surface of the colored layer. Irradiating the layer, in the coating layer, a part of the colored layer is exposed to the surface side of the coating layer to form a through-hole for displaying a predetermined image, characterized in that is there.

According to a fourth aspect of the present invention, there is provided a method of forming an image on a molded article, wherein a colored layer is formed on the surface of the molded article, a coating layer is formed on the surface of the colored layer, and After forming a transparent protective layer on the surface, the coating layer is irradiated with laser light through the protective layer to expose a part of the coloring layer to the surface side of the coating layer, thereby forming a predetermined image. It is characterized in that a through-hole for displaying is formed.

In the above invention, it is preferable that the coating layer is formed by plating.

[0011]

1 to 3 show an embodiment in which the present invention is applied to a casing 1 of a portable telephone as a molded product.

A casing 1 shown in FIG. 1 is formed by molding a synthetic resin material by a metal mold. A colored layer 2 is formed on the surface of the casing 1, and the colored layer 2 is formed on the surface of the colored layer 2. A coating layer 3 covering the entire surface of the coating layer 3 is formed, and a transparent protective layer 4 further covering the entire surface of the coating layer 3 is formed on the surface of the coating layer 3.

The coloring layer 2 is formed of an ink having a desired color, that is,
In the embodiment, a part of the surface of the casing 1 is formed by offset printing using a red epoxy-based ink.

The coloring layer 2 may be formed using, for example, an acrylic ink or a urethane ink in addition to the above-mentioned epoxy ink.

The coating layer 3 is made of aluminum plating formed by vapor deposition.

The protective layer 4 is mainly for preventing the coating layer 3 from being damaged, and is formed by applying an acrylic transparent paint over the entire surface of the coating layer 3.

In the casing 1 having the above structure, the coating layer 3 is irradiated with a laser beam to
In this configuration, a through-hole 5 on which a predetermined image such as a character, a symbol, or a figure is displayed is formed, and a part of the colored layer 3 is exposed to the surface side of the coating layer 3 through the through-hole 5. are doing.

Next, an example of a method for manufacturing the casing 1 having the above structure will be described.

First, a colored layer 2 is formed by offset printing on the surface of a casing 1 formed by molding a synthetic resin material into a mold, and then the surface of the casing 1 is plated with aluminum to form a coating layer 3. An acrylic transparent paint is applied to the surface of the coating layer 3 to form the protective layer 4.

Subsequently, the coating layer 3 is irradiated with the YAG laser beam LB through the protective layer 4, and the YAG laser beam LB forms a desired position of the coating reflection layer 3, specifically, the colored layer 2. The through-hole 6 corresponding to the desired image 7 is formed at the position.

In the embodiment shown in FIG. 1, a through-hole 6 representing an image 7 of a flower pattern is formed.

In the above embodiment, the coloring layer 2 is formed by offset printing using an epoxy-based ink. However, the present invention is not limited to this. For example, the coloring layer 2 may be formed on the back surface of the reflecting layer 3 using an oil-based ink. 4 may be formed by screen printing.

In the embodiment shown in FIGS. 4 and 5, the present invention is applied to a cylindrical fishing rod body 10 formed in a cylindrical shape as a molded product. The coating layer 3 is formed on the surface of the coloring layer 2 to cover the entire surface of the coloring layer 2, and the entire surface of the coating layer 3 is further formed on the surface of the coating layer 3. A transparent protective layer 4 for covering is formed.

The coloring layer 2 is formed by spray painting a yellow epoxy-based ink.

The coloring layer 2 may be formed using, for example, an acrylic ink or a urethane ink in addition to the above-mentioned epoxy ink.

The coating layer 3 is made of aluminum plating formed by vapor deposition.

The protective layer 4 is formed by applying an acrylic transparent paint over the entire surface of the coating layer 3.

By irradiating the coating layer 3 with a laser beam, a through-hole 5 on which a predetermined image 70 is displayed is formed in the coating layer 3, and a part of the coloring layer 3 forms the through-hole 5. It is configured to be exposed on the surface side of the coating layer 3 through the intermediary.

Next, an example of a method for manufacturing the fishing rod main body 10 having the above structure will be described.

First, after the coloring layer 2 is formed by spray coating on the outer peripheral surface of the fishing rod body 10 that has been prepared in advance, the surface of the coloring layer 2 is subjected to aluminum plating to form a coating layer 3.
Further, an acrylic transparent paint is applied to the surface of the coating layer 3 to form the protective layer 4.

Subsequently, the coating layer 3 is irradiated with the YAG laser beam LB through the protective layer 4, and the YAG laser beam LB causes the through-hole 6 corresponding to a desired image 70 to a desired position on the coating layer 3. It forms.

Incidentally, in the embodiment shown in FIG.
A through hole 6 representing 0 is formed.

The coloring layer 4 is exposed on the surface of the casing 1 or the fishing rod 10 formed as described above through the through-holes 6 formed in the coating layer 3. On the surface of the fishing rod 10, the color 7 of the coloring layer 4, that is, an image 7 of a floral pattern expressed in red in the embodiment shown in FIG. 1, and in the embodiment shown in FIG.
The image 70 of the character expressed in yellow appears clearly, and the image 7, 70 expressed in red or yellow is covered with the protective layer 4 as described above. There is no fear that the images 7.70 disappear.

The protective layer 4 of the above embodiment includes
It may be formed by applying a vinyl-based or urethane-based transparent paint to the surface of the coating layer 3.

In each of the above embodiments, the red or yellow colored layer 2 is formed. However, the present invention is not limited to this. Any color may be used, and the colored layer 2 in which a plurality of colors are mixed at random may be used. It may be formed.

In the above embodiment, the transparent protective layer 4 is formed on the surface of the coating layer 3;
When the protective layer 4 is not formed, the coating layer 3 is formed on the surface of the colored layer 2, and then the coating layer 3 is irradiated with a laser beam so that the coating layer 3 is transparent. The hole 5 may be formed.

In each of the above embodiments, the coating layer 3 is made of aluminum plating formed by vapor deposition. However, the present invention is not limited to this. For example, an oil paint or an oil paint mixed with gold powder or silver powder may be used. Alternatively, the coating layer 3 may be formed by applying an aqueous paint.

In the above embodiment, the protective layer 4 is provided on the surface of the coating layer 3, but the protective layer 4 is not always necessary.

Further, in the embodiment shown in FIGS. 6 and 7, a coating layer 30 is previously formed on the surface of the cotton thread 6 dyed green, and this thread 6 is sequentially wound around the outer peripheral surface of the fishing rod main body 100. In this way, the winding layer 60 is formed on the outer peripheral surface of the fishing rod main body 100, and a part of the coating layer 30 is removed by irradiating the winding layer 60 with the YAG laser beam LB. A predetermined image 700 represented by color is exposed on the surface side of the winding layer 60.

The coating layer 30 on the surface of the yarn 6 is formed by applying an aqueous paint mixed with silver powder.

Next, an example of a method of manufacturing the fishing rod body 10 having the above structure will be described.

First, after the outer peripheral surface of the fishing rod main body 100 prepared in advance is appropriately coated, the above-mentioned thread 6 is sequentially wound around the outer peripheral surface of the fishing rod main body 10 to form the winding line layer 60.

Subsequently, the YAG laser beam LB is applied to the winding layer 60.
To the winding layer 6 by the YAG laser beam LB.
By removing a part of the coating layer 30 exposed on the surface of the winding thread 60 into a predetermined shape, the color of the colored yarn 6, that is, the predetermined image 700 expressed in green in the embodiment is changed to the surface of the winding thread layer 60. It only has to be exposed to the side.

The wound yarn layer 6 thus formed as described above
As shown in FIGS. 6 and 7, the coating layer 30
A predetermined image 700 formed by removing a part of the image is exposed, and the image 7 expressed in green clearly appears on the uneven surface of the winding thread layer 60. According to the method, since an image is formed by the YAG laser beam LB, for example, a name or a company name as an image can be easily created on a casing or a fishing rod.

In each of the above embodiments, the YAG laser light irradiating device includes a YAG laser light generating device for generating a YAG laser light LB having a wavelength of about 1.064 μm, and a YAG laser light generating device for generating image data and the like. An existing YAG laser marker device having a scanning mechanism for controlling the YAG laser beam LB via a controller based on the YAG laser beam LB is used.

In the above embodiment, the present invention is applied to a casing of a mobile phone or a fishing rod. However, the present invention is not limited to this, and may be applied to, for example, a casing constituting a display or a keyboard of a computer.

In the above embodiment, the present invention is applied to a molded article made of a synthetic resin material as a molded article. However, the present invention is not limited to this. For example, the present invention is applied to a press-formed metal molded article. May be applied.

[0048]

As described above, according to the first aspect of the present invention, a colored layer is formed on the surface of a molded article, and a coating layer covering the colored layer is formed on the surface of the colored layer. ,
Along with forming the coating layer, the coating layer is irradiated with laser light to form a through-hole on which a predetermined image is displayed, and a part of the coloring layer is formed through the through-hole through the coating layer. By exposing it to the front side, a desired image can be easily and inexpensively formed on a molded product, and there is no possibility that the image is accidentally erased.

According to the second aspect of the present invention, a coating layer is provided on the surface of the yarn colored in a predetermined color, and the yarn is wound around the surface of the molded product, and the winding layer is formed on the surface of the molded product. While forming, a part of the coating layer was removed by irradiating the winding layer with laser light, and a predetermined image represented by the color of the colored yarn was exposed on the surface side of the winding layer. Thereby, a desired image can be formed easily and inexpensively on the surface of the winding layer having irregularities formed on the molded product.

According to a third aspect of the present invention, a colored layer is formed on the surface of a molded article, and a coating layer is formed on the surface of the colored layer. By irradiating the coating layer with the coating layer and exposing a part of the coloring layer to the surface side of the coating layer to form a through hole for displaying a predetermined image, Can be easily and inexpensively formed.

According to the invention of the method for forming an image on a molded article according to claim 4, a colored layer is formed on the surface of the molded article, and a coating layer is formed on the surface of the colored layer. After a transparent protective layer is formed on the surface of the substrate, the coating layer is irradiated with laser light through the protective layer to expose a part of the coloring layer on the surface side of the coating layer, thereby forming a predetermined image. The desired image can be easily and inexpensively formed on the molded article by forming the through-hole for displaying the image, and the image is covered with the protective layer.
Even if the image is used for a long time, the image does not disappear accidentally.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mobile phone to which the present invention is applied.

FIG. 2 is a cross-sectional view of a main part of a casing of the mobile phone before a through-hole is formed.

FIG. 3 is a cross-sectional view of a main part of a casing of the mobile phone after a through-hole is formed.

FIG. 4 is a perspective view of a main part of a fishing rod to which the present invention is applied.

FIG. 5 is an enlarged sectional view of a main part of the same.

FIG. 6 is a perspective view of a main part showing another embodiment of a fishing rod to which the present invention is applied.

FIG. 7 is an enlarged sectional view of a main part of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing (molded product) 10.100 Fishing rod main body (molded product) 2 Colored layer 3.30 Coating layer 4 Protective layer 6 Thread 60 Winding layer LB Laser beam

Claims (5)

[Claims] 1. A colored layer is formed on the surface of a molded article, a coating layer covering the colored layer is formed on the surface of the colored layer, and a predetermined image is formed on the coated layer by irradiating the coated layer with laser light. A molded article characterized by forming a through-hole indicated by a symbol, and exposing a part of the colored layer to the surface side of the coating layer through the through-hole. 2. A coating layer is provided on the surface of a yarn colored in a predetermined color, and the yarn is wound on the surface of a molded product to form a wound layer on the surface of the molded product. A molded article characterized in that a predetermined image represented by the color of a colored yarn is exposed on a surface side of a wound yarn layer by removing a part of the coating layer by light irradiation. 3. A colored layer is formed on a surface of a molded article, and a coating layer is formed on the surface of the colored layer. Then, the coating layer is irradiated with a laser beam, and a part of the colored layer is applied to the coating layer. A method for forming a through-hole for displaying a predetermined image by exposing the surface of the coating layer to a surface side of the coating layer. 4. A colored layer is formed on the surface of the molded article, a coating layer is formed on the surface of the colored layer, and a transparent protective layer is formed on the surface of the coated layer. Irradiating the coating layer through the layer, the coating layer, to expose a part of the coloring layer to the surface side of the coating layer, to form a through hole for displaying a predetermined image. Characteristic method of forming images on molded articles. 5. The method according to claim 1, wherein the coating layer is formed by plating.
The molded article according to the above.