JPS61177425A - Production of decorative sheet for color spectacle frame - Google Patents

Abstract

PURPOSE:To stick securely a decorative sheet onto the outside surface of a frame by forming a plating layer and an intervening film between a coated film and decorative sheet. CONSTITUTION:A liquid prepd. by incorporating about 1-1.5 ratio epoxy vinyl modified resin and slight stabilizer into, for example, a solvent mixture is coated atop 13 the coated film 12 and is dried to form the thin transparent intervening film 14. The film 14 adheres tightly to the film 12 or the plating layer to provide the secure degree of adhesion even if the top surface 13 of the film 12 is smooth and flat. The paint prepd. by using the epoxy resin as an essential component and kneading the curing agent, pigment, metallic powder, etc. therewith is vacuum-defoamed and is coated on the film 14, then the coating is dried. Thus the film 14 connects the decorative sheet 14 and the coated film 12 or the plating layer to each other, thereby preventing the exfoliation of the sheet 10.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing eyeglass frames, particularly a decorative laminate made of epoxy resin as a main component, on a plated or painted colored eyeglass frame.

(Prior Art) Eyeglass frames are not only required to be functional, but also have a strong design orientation and are decorated with a wide variety of decorations. Taking the metal frames that have become the mainstream of eyeglass frames in recent years as an example, materials that are lightweight, have high tensile strength, and have spring characteristics are not only required for these properties, but also for the high design quality of the frames. desired. Furthermore, there are also designs using such metal frames that are not only designed by devising the shape, but also have colorful colors painted on a part or the entire area of the frame. However, the color 7 frame provided by painting or plating forms only a thin uniform layer of color on the outer surface of the frame and is extremely monotonous. Therefore, by attaching epoxy resin mixed with colorful pigments and metal powder to a part of the frame, such as one corner of the front frame or the outer surface of the temple, a decorative board is formed and the monotonous frame is changed. Moreover, frames that improve the image of high-quality eyeglass frames are also widely used.

By the way, in the production of this decorative board, four parts are formed at the location where the decorative board is to be attached, the bottom surface of the recess is roughened by shot, and a paint containing epoxy resin as the main component and hardening agent, pigment, metal powder, etc. is mixed in a vacuum is applied. After defoaming, it is applied to the four parts mentioned above and cured, but attaching the decorative laminate to the color frame has poor adhesion between the paint film or plating layer and the epoxy resin that makes up the decorative laminate. If the frame is bent or twisted, the veneer will peel off. but,
Shot processing for attaching a decorative board to a part of a color frame is a complicated process, increases the number of man-hours, and significantly increases the manufacturing cost of the frame.

(Problems to be Solved by the Present Invention) As described above, in order to attach a decorative laminate mainly composed of epoxy resin to a part of an eyeglass frame, it is necessary to form a recess and roughen the bottom surface of the recess. First, the roughening process described above is complicated, especially for painted or plated color frames, but if it is directly attached to the paint film or plating layer, there is a problem that the adhesion is poor and it may peel off. be.

The present invention was developed with the aim of solving this problem, and it is possible to attach a decorative board mainly composed of epoxy resin to the outer surface of the color frame without concave molding or roughening. A method for manufacturing a board is provided.

(Means for solving the problem) As mentioned above, since epoxy resin has low adhesion with plating layers and paint films, epoxy resin can be used directly regardless of whether the outer surface is concave or roughened. If a decorative laminate is formed by applying a paint containing as a main component, an intervening film is formed between the plating layer or paint film and the decorative laminate, since the decorative laminate is easily peeled off when the eyeglass frame is bent or twisted. The intervening film not only has good adhesion to the plating layer and the paint film, but also has a strong bond with the epoxy resin, and the decorative board is firmly attached to the outer surface of the color frame through the intervening film. Here, the mixed liquid is an extremely thin film that is formed by applying the undiluted solution to the above-mentioned plating layer to which the decorative board is to be attached or the outer surface of the coating film and drying it.

(Example) Fig. 1 shows a general eyeglass frame.The front frame (consisting of a bell and a temple (2), the front frame (1) is a frame for holding and fixing a lens), the frame There is a connecting plate (7) that symmetrically connects (2), a nose pad (7) attached to the inside of (2), and an endpiece (7) on both sides.
(7) is constructed by brazing, and the endpiece (η is the crane f, 2) is connected via a hinge chain so that it can be opened and closed, and the outer surface (q) of the temple (2) has a decorative Board (10)
is formed.

Figure 2 (a) to (d) are Figure 1 17) 7/l/(2)
Part (7) shows the manufacturing process of the decorative board (10) at the A-A cross section. First, a wire rod is press-formed into a predetermined cross-sectional shape (Noa #42), and then the outer surface (l/) is formed. is plated or painted to form a thin plating layer or paint film (12) (b). Therefore, the entire eyeglass frame becomes a colored frame having a predetermined color, and conventionally it has been used as it is. However, in the present invention, the above-mentioned liquid agent is mixed into the upper surface (/3) of the coating film (/?), i.e., about i mat of epoxy vinyl modified resin and a small amount of stabilizer in ~1.5 t'1 of mixed solvent. The liquid is applied and dried (either forced drying or natural drying) to form a kind of thin transparent intervening film. For example, a 77% mixed solvent consisting of 22% epoxy vinyl modified resin, 37% aromatic hydrocarbon solvent, 58% ketone solvent, and 5% ester solvent
A mixed solution of the present Picoton F-50H Clear (trademark), which is composed of 1% stabilizer, 65% aromatic hydrocarbon solvent, and 2 tonnes solvent, can be used to form the intervening film. The intervening film (/II) is in close contact with the coating layer II (/2) or the plating layer, and even if the upper surface (/3) of the coating film (12) is a smooth plane, the degree of adhesion is strong. In this way, on the tightly adhered intervening film (/lI), a paint containing an epoxy resin as a main component and kneaded with a curing agent, pigment, metal powder, etc. is applied after defoaming under vacuum, and is cured. Of course, self-thermal curing may be used, but since it takes time, it is more convenient to heat it to a predetermined temperature and forcibly cure it.

On the other hand, in Fig. 3 (a) to (,), four parts (15) are provided at the locations where the decorative board Cl0) is to be applied, and then the coating film (/2) is applied.
, or an example in which a plated layer is formed and the intervening film (/II) is adhered, and then a paint is poured in and a decorative board (10) is attached. By the way, the decorative board (10) can be attached not only to the outer surface θ of the temple (2) but also to the connecting plate (to), one corner of the frame (b), the endpiece (7), or any other location.

As described above, the method for manufacturing the decorative glass frame board according to the present invention involves first forming the coating film (/2) or the intervening film (/2) having high adhesion with the plating layer on the outer surface of the color frame. This is a method in which the decorative board (10) is formed by applying an epoxy resin to the intervening film (/μ) after degassing in vacuum, and the unique effects described below can be obtained.

(Effects) (1) The intervening film (/l) is formed by applying a mixed solvent containing epoxy vinyl modified resin and a small amount of stabilizer to the top surface (/3) of the plating layer or coating film (/2) and drying it. The decorative board (10) and the above-mentioned paint film (/2) or plating layer are connected to each other to prevent the decorative board (10) from peeling off, and to prevent the decorative board (10) from peeling off due to bending and twisting that always occur when using glasses. Very stable.

■ Stable adhesion of the decorative board (10) is achieved by limiting the areas to which it should be attached and minimizing bending and twisting of the frame)
The decorative board (10) can be formed in a large size over most of the outer surface (W) or frame of the temple (2), instead of at one corner of the board (10).

(3) It is possible to attach the decorative board (10) only through a thin intervening film (/4) without removing the plating layer or paint film (/2) formed on the outer surface of the frame (//). Not only does this result in a significant reduction in man-hours, but also the outer surface (/
The color of the coating or plating applied to l) harmonizes with the color of the decorative laminate (10), resulting in a decorative eyeglass frame that cannot be seen with conventional decorative laminates (10) of this type, and its elegance is further enhanced. Improved and made into a more high-class frame.

[Brief explanation of the drawing]

FIG. 1 shows an example of a color glasses frame with a decorative laminate attached to the outer surface of the temple, and FIGS. 2 and 3 show an example of manufacturing the decorative laminate. V)・l・Front frame ωe...Tsuru U
)...lens) fist...φ frame σ)...
Connecting plate @Φ・・Nose pad bat (ηΦ)
...Armor (A) Pipe...Hinge (W)...
・Outer surface (10)... Decorative board (//)...
・ψOuter surface WI (saw)...φ Paint film (/3)...
Upper surface (/su...intervening membrane (15)...
Recessed portion patent applicant Yamada Sogei Co., Ltd. Agent Hiko Hirasaki Tomari (
α) (b) (C) <d)
(CLI (b) (C
) (d) (e) Figure 3

Claims (1)

[Claims] A metal eyeglass frame is made into a colored frame by plating or painting, and an extremely thin intervening film is formed by applying a mixed solvent containing epoxy vinyl modified resin and a small amount of stabilizer to the top surface of the plating layer or paint film and drying it. A curing agent containing an epoxy resin as a main component is formed on the intervening film,
A method for manufacturing a decorative board for color eyeglass frames, characterized in that the decorative board for colored eyeglass frames is formed by vacuum defoaming a paint mixed with pigments, metal powder, etc., and then applying and curing the paint.