JPH01151976A - Formation of hairline - Google Patents

Abstract

PURPOSE:To surely form high-quality hairlines to a member such as a plastic panel by subjecting an ink film to brushing treatment in an uncured state and rapidly curing it. CONSTITUTION:In the case of forming hairlines by surface treatment of a plastic panel, etc., an ink film 3 is provided on the surface 1s of a member such as the plastic panel 1 by screen printing. Then, the ink film 3 being in an uncured state is rubbed with a brush to form line-grooves 5 and thereafter this ink film 3 is rapidly cured. Thereby, hairlines 6 are formed on the surface 1s of the member. By such a way, high-quality hairlines are surely formed with good workability regardless of the type of the member.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming hairlines that can be used for surface treatment of plastic panels and the like.

[Prior art and its problems]

Generally, aluminum panels are used for the operation panels and cosmetic panels that make up the exteriors of televisions, cassette tape recorders, calculators, etc., and the surfaces of the panels have a hairline finish that gives them a sense of calm and luxury. administered. Hairlines can be easily formed on such aluminum panels by rubbing the panel base with a stainless steel brush, etc.
Due to demands for weight reduction and cost reduction, there is a gradual shift to plastic panels.

By the way, when applying a hairline finish to a plastic panel, there is a problem that even if the above-mentioned brush is used, the tip of the brush slides on the surface of the plastic due to the elasticity of the plastic material, making it impossible to apply a good hairline finish.

For this reason, processing using a hot stamping method or a printing method has also been attempted.

The hot stamping method is a method in which a hairline is provided on the surface of a polyester film by aluminum vapor deposition, and the back surface of the film is thermocompression bonded to the surface of the target plastic panel. However, this method requires heat (100 to 120
There were problems such as a decline in quality and yield, such as the hairline easily disappearing due to pressure (°C) and pressure, a decline in workability due to the complexity of the process, and poor heat resistance and scratch resistance.

On the other hand, the printing method is a method in which a hairline shape is directly printed on the surface of a plastic panel by screen printing, but it is virtually impossible to form a fine hairline pattern due to the size limit of silk mesh.

[Means for solving problems]

The present invention aims to provide a hairline forming method that solves the problems existing in the prior art described above, and is achieved by the method shown below.

That is, in the method for forming a hairline according to the present invention, an ink film 3 is provided on the member surface IS of, for example, a plastic panel 1 by screen printing or the like. Next, the uncured ink film 3 is stroked with a brush to form a line groove 5, and then the ink film 3 is rapidly cured to form a hairline 6 on the member surface Is. shall be.

〔Example〕

Preferred embodiments of the present invention will be specifically described below.

FIG. 1 is a process diagram for implementing the hairline forming method according to the present invention, and FIG. 2 is a sectional view of the surface of a member formed by the method of the present invention.

(Step A) First, a plastic panel l for applying a hairline is prepared, and for example, a silver (metallic color) ink 2 is printed by screen printing (silk printing) on the surface Is of this plastic panel l to form an ink film. form 3. In this case, the printing technique does not need to be particularly different from normal screen printing.

Further, the pattern of the original plate for printing is manufactured so that the ink 2 adheres only to the portion of the surface Is where the hairline is to be formed. Note that the reference numeral 7 in FIG. 2 indicates an area to which the ink 2 is not attached. Such screen printing makes it possible to separate and select processed parts and non-processed parts very easily.

(Step B) Next, in an uncured state before the ink film 3 adhered to the surface Is hardens (dries), the tip of the brush is brought into moderate pressure contact with the ink film 3 and stroked in a predetermined surface direction. As a result, a plurality of fine concave line grooves 5 are formed. In this case, the brush to be used is a conventional stainless steel brush for processing aluminum panels, because the ink film 3 can be easily removed, so the brush thickness, length, elasticity, etc.
Select appropriate hardness, etc. Note that as the material, metal materials, synthetic resin materials, natural materials such as animal hair can be used.

(Step C) Next, the brush-treated, uncured ink film 3 is rapidly cured using a dryer capable of high-speed drying.

(Step D) Through the above steps, on the ink film 3, that is, on the surface Is.
A hairline 6 shown in FIG. 2 can be formed on the top. Furthermore, the plastic panel 1 could be decorated as if it had been directly decorated with hairlines, and furthermore, it was possible to obtain a metallic luster that could not be obtained by conventional methods due to the diffused reflection and luster.

Although the embodiments have been described in detail above, the present invention is not limited to these embodiments.

For example, the hairline formation target can be applied to the illustrated plastic panel, any other arbitrary material such as hard metal, glass, wood, paper, etc., and the surface of any other arbitrary member such as a block-shaped member.

Other changes may be made in the detailed structure, method, procedure, etc., without departing from the gist of the present invention.

〔Effect of the invention〕

Thus, the method for forming a hairline according to the present invention.

In this method, the ink film is treated with a brush in an uncured state, and the ink film is rapidly cured, resulting in the following remarkable effects.

■ Conventionally, it was difficult to create a good hairline on parts such as plastic panels, but with this method,
A high-quality hairline can be formed, and the marketability can be greatly improved.

■ Hairlines can be reliably formed regardless of the material of the plastic panel or other parts, contributing to improved yield and workability, and is also highly versatile.

■ Since printing techniques such as screen printing can be used, it is possible to easily select the areas to be treated with hairlines.

■ No complicated processes are required, contributing to heritage and cost reduction, as well as excellent heat resistance and scratch resistance.

[Brief explanation of the drawing]

FIG. 1: A process diagram for carrying out the hairline forming method according to the present invention. FIG. 2: A sectional view of the surface of a member formed by the method of the present invention. In the drawing, 1 Niblast panel ls: member surface 2: ink
3: Ink film 5... Niline groove patent applicant Toyo Mark Co., Ltd. Patent attorney 1) Shigeru

Claims (1)

[Scope of Claims] [1] An ink film is provided on the surface of the member, and the uncured ink film is stroked with a brush to form line grooves, and then the ink film is rapidly cured. How to form a hairline. [2] The hairline forming method according to claim 1, wherein the panel is a plastic panel. [3] The hairline forming method according to claim 1 or 2, wherein the ink film is provided by screen printing.