JP3085650B2 - Translucent parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to characters, numerals, figures (hereinafter referred to as "predetermined information"), etc., formed on the outer surface of a component covering a light source. The present invention relates to a translucent component which can be visually recognized from the outside as predetermined information having a sharp and accurate shape.

[0002]

2. Description of the Related Art There have been many translucent components for audio and other electric appliances and other signs, which are capable of visually recognizing various kinds of predetermined information by transmitting light from a light source provided inside. Used in some places.

[0003] As such a translucent component, there are a translucent component using a translucent resin material so that light can pass only through a predetermined information portion, and a converse component. For example, as shown in FIG. 2, the main body is molded into a predetermined shape using a resin that is translucent and capable of being plated, for example, an ABS resin, and predetermined information is printed on an outer surface thereof.
A metal plating 6 is applied on the outer surface of the main body 1 'so as to leave the information portion 2', and the portion is made light-opaque to manufacture the information portion 2 'so as to stand out.
As shown in the figure, the main body 1 'is molded into a predetermined shape with a translucent resin, a light-impermeable coating layer 7 is formed on the outer surface thereof by a vacuum deposition method, a sputtering method, or the like, and a laser beam 8 is used to form a light-transmitting coating layer. It is manufactured by forming an information portion 2 'which can transmit light, or, as shown in FIG. 4, similarly forming the main body 1' and using an ink having poor adhesion to the resin, for example, an aqueous ink. Predetermined information part 2 '
After printing and drying, and then coating and drying a light-impermeable coating layer 9 on the entire outer surface, it is adhered to the printing portion 11 using an adhesive material 10 such as cellophane tape. It is known that the information portion 2 'is formed by peeling off the outer surface while forming the coating layer 6 on the outer surface.
By these means, it is also possible to manufacture the information part 2 'as light opaque.

[0004]

However, the translucent component obtained by the method of FIG. 2 has a portion where metal plating is not applied or hardly applied to a portion surrounded by a line or a portion having a narrow gap. Therefore, there is a problem that the outline of the information portion 2 ′ is blurred, and there is a possibility that the information portion 2 ′ may be peeled off due to the bonding between the resin and the metal, thereby increasing the manufacturing cost.
In addition, the light-transmitting parts obtained in FIG. 3 cannot form fine characters and figures, and use laser beams to form the information portion 2 ', so that equipment costs are high, and humans such as push buttons and switches are difficult to use. When used in places where the number of times of pressing and touching with a finger is large, there is a problem that abrasion resistance is poor and a coating portion may peel off. Further, when the light-transmitting component obtained according to FIG. 4 is peeled off with an adhesive material, there is a possibility that the coating layer 6 may be peeled off at the periphery of the printing together, making it difficult to produce detailed information. However, there is a problem in that they are easily scratched and have poor wear resistance.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a light-transmitting component having extremely high wear resistance and capable of displaying predetermined information with a sharp outline.

[0006]

Means for Solving the Problems The inventor of the present invention has been studying to solve the above-mentioned problems and achieve the above-mentioned object, printing predetermined information using UV ink or UV resist ink, and dispersing the information. The present inventors have found that the object can be achieved by forming a dispersed dye penetrating layer portion by applying a dye and heating, thereby completing the present invention. That is, the present invention relates to a molded crystalline resin PB
A translucent component in which a dispersed paint penetrating layer portion and a portion where predetermined information is printed and formed with UV ink or resist ink are formed on the outer surface of the main body made of a translucent resin material made of T (polybutylene terephthalate). It is characterized by the following.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The translucent resin used in the main body is a crystalline resin ΔT (polybutylene terephthalate).

The ink for printing and forming the predetermined information on the outer surface of the resin body includes UV ink or UV resist ink, and prints the predetermined information. Further, as the disperse dye to be applied to form the disperse dye permeation layer portion on the outer surface of the resin body, a commercially available disperse dye may be used, and the disperse dye may be applied by a spraying method, a dipping method or other appropriate means.

In order to allow the disperse dye to penetrate into the resin body, the temperature is 100 ° C. or more, preferably 120 to 150 ° C.
Heat treatment for 2 to 10 minutes to infiltrate the disperse dye, and remove excess disperse dye remaining without infiltration by washing with trichlene, thinner, water or other detergent. Perform Thereafter, if necessary, the printed portion can be removed. In this way, the portion on which the predetermined information is printed is formed by dispersing the disperse dye into the resin by the printing ink to prevent the disperse dye from penetrating into the resin even by the process of applying the disperse dye and heating and penetrating the disperse dye. Are left as they are, are removed by washing and removing treatment, remain as they are without penetrating the disperse dye, and can transmit light. The translucent component according to the present invention can also be formed so that the disperse dye permeates only the portion where the predetermined information is printed and formed so as to be light opaque.

[0010]

Next, an embodiment of the present invention will be described with reference to FIG. 1 showing a process of manufacturing a translucent component according to the present invention.

Example: Using a crystalline polybutylene terephthalate resin, a main body 1 of an audio push button having an outer diameter of 10 mm, a thickness of 10 mm, and a height of 10 mm and having a substantially U-shaped cross section was manufactured. On its top surface, a white U
Using a V resist ink, a numeral was printed and formed as a predetermined information portion 2 by a silk printing method (see FIG. 1A). Next, a dye coating layer 3 having a film thickness of about 20 to 30 μ was formed by applying a black or a color that hardly transmits light as a disperse dye to the entire outer surface of the push button body 1 by a spraying method. FIG. 1 (b)). Then 15
By heating at 0 ° C. for 6 minutes, the disperse dye penetrated into the main body 1 to form a disperse dye penetrating layer 4 (see FIG. 1C). Thereafter, the excess disperse dye remaining without being permeated is washed and removed using trichlene (see FIG. 1 (d)), and if necessary, the printed portion is removed to remove the push button product. 5 (see FIG. 1 (e)).

The push button product 5 is mounted on a predetermined portion having a light source lamp therein, and is pushed in and lit. When the push button product 5 is turned on, the numeral which is the predetermined information formed on the surface of the push button product 5 has a clear contour. It was recognized that it was displayed. In addition, repeated indentation was performed 10 million times, and it was recognized that the coating was not peeled or faded, and was excellent in abrasion resistance.

[0013]

The present invention relates to a molded crystalline resin PB
On the outer surface of the main body made of a translucent resin material made of T (polybutylene terephthalate), a dispersed paint penetrating layer portion and a portion formed by printing predetermined information with UV ink or UV resist ink are formed. From
Extremely high abrasion resistance, can be clearly expressed even when printing satin finish, arc rack, etc. on the outer surface of the main body, making the sign more clearly displayed, and fine cracks or pinholes in the printing of the ink itself And thus excellent effects such as a low defect rate are observed.

[Brief description of the drawings]

FIG. 1 is a view for explaining a method of manufacturing a light-transmitting component according to the present invention, and (a) to (e) are cross-sectional views showing respective manufacturing steps.

FIG. 2 is a cross-sectional view showing an example of the related art.

FIG. 3 is a sectional view showing another example of the prior art.

FIG. 4 is a sectional view showing still another example of the prior art.

[Explanation of symbols]

 1, 1 'body 2, 2' predetermined information part 3 dye coating layer 4 disperse dye penetration layer 5 push button product 6 metal plating 7 coating layer 8 laser beam 9 coating layer 10 adhesive material 11 printing part

Claims (1)

(57) [Claims] 1. A predetermined information is printed on an outer surface of a main body made of a light-transmitting resin material made of a molded and processed crystalline resin PBT (polybutylene terephthalate) and a dispersed paint penetrating layer portion and UV ink or UV resist ink. A light-transmitting part, wherein the formed part is formed.