JPH06196845A - Manufacture of simple printed board - Google Patents

Abstract

PURPOSE:To simply form a substrate having a desired conductive pattern by spraying conductive paint over a masking member stuck on a substrate. CONSTITUTION:A pattern film 12 of a desired size and thickness is prepared. The film 12 is cut out in a pattern corresponding to a conductive pattern to form a plurality of cutouts 14 (14a, 14b,...). The pattern film 12 cut out in the required pattern is then stuck to a substrate 16. Thereafter, conductive paint 18 is sprayed on the cutouts 14 from the pattern film 12 side through a spray nozzle. After the conductive paint has been cured to some degree with the lapse of a specified time, the pattern film 12 is stripped. This obtains a printed board 10 having a specified conductive pattern composed of conductive sections 20 (20a, 20b,...).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a simple printed circuit board which is suitable for application to an experimental printed circuit board, etc., and particularly to a printed circuit board having a desired conductive pattern very easily. It was done.

[0002]

2. Description of the Related Art For example, in a laboratory or the like, there is a case where it is desired to use a printed circuit board having a special conductive pattern which is specific to the experiment and can be used only for the experiment or is mounted on a prototype machine. Many.

Even when a printed circuit board is manufactured for such a purpose, the current state is that the printed circuit board is manufactured through the same steps as those for manufacturing a normal printed circuit board.

That is, a substrate made of paper phenol, glass cloth, epoxy or the like is prepared, and a copper foil is attached to the upper surface thereof. After that, an unnecessary portion of the copper foil is etched with ferric chloride or the like to form a printed board having a predetermined conductive pattern.

[0005]

Therefore, in the conventional method of manufacturing a printed circuit board, regardless of whether it is for an experiment or a prototype, 1. Laminate the copper foil on the board 1. 2. Mask the required part of the copper foil. 3. Etching with ferric chloride 4. Wash the ferric chloride The desired printed circuit board could not be created without going through a number of steps such as removing the masking applied to the required copper foil.

Therefore, even if a printed circuit board for experiments, prototypes, etc., which is simple and does not require high accuracy, it is difficult to easily prepare the printed circuit board, and the equipment for the production is required. However, there was a drawback that it became a big one.

Further, the substrates that can be used are also limited.

In view of the above, the present invention has solved such a conventional problem, and in particular, enables a printed circuit board having a desired conductive pattern to be easily created with the same feeling as when assembling a plastic model or the like. It proposes a manufacturing method of the simplified printed circuit board.

[0009]

In order to solve the above-mentioned problems, according to the present invention, a peelable patterned masking member is attached to a substrate, and after the masking member is attached, the masking member is attached. The conductive coating material is applied in a spray form from the side, and after the applied conductive coating material is cured, the masking member is peeled off to produce a printed circuit board having a predetermined conductive pattern.

[0010]

The simple printed circuit board is manufactured through the following steps.

First, the pattern film 12 cut into a predetermined pattern is prepared.

The pattern film 12 is adhered (attached) to the upper surface of the substrate 16. Pattern film 1 in that state
The conductive paint 18 is sprayed from the second side and applied in a predetermined amount.
Then, the conductive paint 18 is applied to the upper surface of the cut-out portion of the substrate 16.

After that, the pattern film 12 is peeled off.
Then, the conductive portion 20 remaining on the substrate 16 provides a predetermined conductive pattern. As a result, the printed circuit board 10 having the target conductive pattern is formed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an example of a simple printed circuit board according to the present invention will be described in detail with reference to FIG.

First, a pattern film 12 having a predetermined size and thickness as shown in FIG. 1A is prepared.

A plurality of cutout portions 14 (14a, 14b, ...) Are formed in the pattern film 12 by cutting out portions to be conductive patterns. The film only needs to have a certain degree of hardness, and its material is not particularly limited.

The pattern film 12 cut out into a predetermined pattern is then attached to the substrate 16 (FIG. 1B).
A normal adhesive can be used for sticking. As the substrate 16,
You can use paper, phenol, glass cloth, epoxy, etc.
The material is not particularly limited.

Next, as shown in FIG. 1B, the conductive paint 18 is sprayed from the side of the pattern film 12 through a spray nozzle, and is particularly applied onto the cutout portion. The coating amount determines the thickness of the conductive paint. The thickness of the conductive paint can be made uniform depending on the application method, but this thickness and the accuracy of the pattern after application are not so required.

The conductive material 18 is, for example, "Lantron E.
15 "(trade name) or the like can be used.

Next, after the conductive paint is cured to some extent after a predetermined time has passed, the pattern film 12 is peeled off. Then, as shown in FIG. 7C, the conductive portion 20 (20a, 20a
The printed circuit board 10 having a predetermined conductive pattern composed of (b, ...) Is produced.

When a printed circuit board is used for experiments or prototypes, the shape of the conductive pattern and the thickness of the conductive portion 20 are not strictly required. .

Although the case where the pattern film is used as the masking member has been described above, the tape may be simply attached to the substrate and masked except for the portion which becomes the conductive pattern.

[0023]

As described above, according to the present invention, in a state where the substrate is masked by the masking member, the conductive paint is sprayed and applied from the masking member side to form a predetermined conductive pattern on the substrate. A printed circuit board having a predetermined conductive pattern can be produced by a simple process.

According to this, a printed circuit board having a desired conductive pattern can be easily produced in a short time with the same feeling as when assembling a plastic model or the like, which is convenient for practical use.

Further, there are features such that equipment for producing a printed circuit board is not necessary and the material of the circuit board is not particularly limited.

Therefore, the simple printed circuit board produced according to the present invention is very suitable for use as a printed circuit board used in places where precision is not required, such as for experiments and prototypes.

[Brief description of drawings]

FIG. 1 is a process drawing showing an example of a method for manufacturing a simplified printed circuit board according to the present invention.

[Explanation of symbols]

 10 Printed Circuit Board 12 Pattern Film 14 Cutout Part 18 Conductive Paint 20 Conductive Part

Claims (1)

[Claims] 1. A peelable patterned masking member is adhered onto a substrate, and after the masking member is adhered, the conductive paint is applied in a spray form from the masking member side. A method for producing a simple printed circuit board, characterized in that the masking member is peeled off after curing to produce a printed circuit board having a predetermined conductive pattern.