JPH0815029B2 - Panel switch board manufacturing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a panel switch plate used in various industrial equipment.

[Conventional technology]

2. Description of the Related Art Conventionally, in the field of various industrial equipment, push-button type switches formed by arranging a plurality of keys have been widely used. However, recently, from the viewpoint of visual factors such as design and color, touch feeling during operation, and durability according to the usage environment, a panel switch in which a panel surface and a key are integrally formed is formed. It is commonplace.

And as a panel switch plate used for such a panel switch, due to the difference in sheet surface processing,
So far, there are three types.

The first type is simply printed on a flat topsheet and is used with the keytop and switch body located below the topsheet. However, in this type of panel switch plate, since the surface has no unevenness, the position of the switch cannot be recognized by the touch feeling of the finger, and the operability is poor.

In addition, the second type is an improvement of the defects of the first type, and a convex portion (emboss) is formed on the switch part. In this case, a mold for embossing is required. Therefore, there is a drawback that the die manufacturing cost becomes very high.

Furthermore, the third type is a mold printing method, in which a convex portion is formed in the switch portion,
The manufacturing process is complicated, and in this case, it is difficult to obtain the positional accuracy between the convex portion and the printed layer.

As described above, no method has been reported so far for easily manufacturing a panel switch plate formed in a convex shape on the operation surface side of each switch section at low cost.

Further, the convex switch portion is formed on both sides such that the convex switch portion is formed not only on the operation surface side where the finger comes into contact but also on the portion corresponding to the key top installed below the panel switch plate. A method for manufacturing a panel switch plate at low cost and easily has not been proposed so far.

[Problems to be Solved by the Invention]

The present invention solves the above-mentioned drawbacks and provides a method capable of easily manufacturing a panel switch plate having convex switch portions on one side of the operating side of each switch, or on both the operating side and the back side. This is an issue.

[Means for solving the problem]

The manufacturing method of the panel switch plate of the present invention, the resin layer surface of the sheet base material having a resin layer made of an ultraviolet curable resin on at least one surface, a baking film provided with an exposed portion and a light-shielding portion is adhered and laminated, Irradiate ultraviolet rays through the baking film, then remove the baking film,
After that, the uncured UV-curable resin at the position corresponding to the light-shielding portion is developed and removed using water or an organic solvent to form a convex switch portion on the key operation surface side of the sheet base material. And

First, an example of the panel switch plate obtained by the method of the present invention is shown in FIGS. 1 and 2.

FIG. 1 shows that a convex switch portion (2) is formed on the operation surface side of a sheet base material (1), a printing layer (3) is provided on the other surface of the sheet base material (1), and FIG. 3 is a cross-sectional view of a panel switch board in which a printing cost protection film (5) is attached via an adhesive layer (4). At this time, the printing layer (3) and the adhesive layer (4) are not particularly limited in material, and general-purpose materials can be used, and the adhesive layer (4) is a pressure-sensitive adhesive layer. Is also good.

On the other hand, FIG. 2 is a cross-sectional view of a panel switch plate in which convex switch portions (2) are formed on both front and back surfaces of a sheet base material (1). When the convex switch parts (2) are formed on both sides of the sheet base material (1) in this way, a single sheet base material (1) is used as a method of indicating the position of the key and the like.
Instead of the above, a laminate sheet having the printing layer (3) as an intermediate layer may be used, or after forming the convex switch portion (2), the printing layer (3) may be provided on the surface thereof.

Next, each step of the present invention for manufacturing the panel switch plate illustrated in FIG. 1 will be described with reference to FIGS. 3 to 5.

First, an ultraviolet curable resin is applied to one surface of the sheet base material (1) to form a resin layer (6), and then the surface of the resin layer (6) is covered with a cover film (7). Then, a printing layer (3) is provided on the other surface of the sheet base material (1) so as to provide a desired panel switch display (see FIG. 3). The type of ultraviolet curable resin that can be used in the present invention is not particularly limited, and any general-purpose resin can be used.

In the present invention, there is an advantage that a commercially available flexographic printing plate can be used instead of applying the ultraviolet curable resin to the sheet substrate (1). It is suitable because the ultraviolet curable resin is applied to one surface of 1) and the resin layer (6) is commercially available in a state of being covered with the cover film (7).

Then, next, a print layer protective film (5) is attached to the print layer (3) side via an adhesive layer (4) to form a sheet laminate, and then the cover film (7) is removed (see FIG. 4). ). In the method of the present invention, after the printing layer (3) is provided on the sheet substrate (1), the printing layer protective film (5) is first attached via the adhesive layer (4), and then the resin is used. It is also possible to provide the layer (6), in which case the cover film (7) is unnecessary.

Then, the exposed portion (9) is formed on the surface of the resin layer (6) so as to match the switch position represented by the printed layer (3).
And a baking film (8) having a light shielding part (10) is laminated. At this time, it is preferable to perform vacuum suction so that the baking film (8) and the resin layer (6) are completely adhered to each other. Then, ultraviolet rays are radiated from the side of the laminated baking film (8) using an ultraviolet lamp or the like (see FIG. 5).

After UV irradiation, remove the baking film (8),
When developing with water or an organic solvent, the uncured UV-curable resin corresponding to the position of the light-shielding part (10) is dissolved and removed, but the part of the part corresponding to the position of the exposed part (9) exposed to UV rays is removed. The ultraviolet curable resin is cured to form the convex switch part (2).

Further, thereafter, the attached developing solution is drained using gauze or the like, and dried using a drier to obtain the panel switch plate shown in FIG. In the present invention, it is preferable that after the drying, the surface of the resin layer (6) is again irradiated with ultraviolet rays to complete the curing of the resin layer (6).

The present invention also provides a method for manufacturing a panel switch plate having convex switch portions (2) on both surfaces of a sheet substrate (1) as shown in FIG. In the case of manufacturing a panel switch plate having a structure, a method of forming convex switch parts (2) on both surfaces in a single step may be used, or the step may be divided into two steps to form a convex shape on each side. A method of forming the switch part (2) may be used.

When the convex switch part (2) is formed in one step, the resin layers (6) are provided on both sides of the sheet base material (1),
The baking film (8) may be laminated on the respective resin layers (6) so that the switches are aligned with each other, and both sides may be simultaneously irradiated with ultraviolet rays and developed. On the other hand, when the steps are performed in two steps, After the convex switch portion (2) is formed on one surface of the sheet base material (1) according to the above-mentioned process, the resin layer (6) is provided on the other surface and the same process may be repeated.

In addition, the production method of the present invention is also one in which the front and back surfaces of a sheet made of an ultraviolet curable resin are laminated by closely adhering a baking film provided with an exposed portion and a light shielding portion, respectively, and then simultaneously exposed and developed. , In this case, the convex switch part (2) is directly attached to the sheet made of the ultraviolet curable resin.
Can be formed.

The panel switch plate obtained by using the method of the present invention has a convex switch part (2) whose surface is flat, and a baking film (8) having an exposed part (9) and a light-shielding part (10). By providing the drawing shape or the character shape, it is possible to form a concave portion having a figure or character shape in the portion of the convex switch portion (2) where the finger comes into contact. In this case, the finger contact There is an advantage that the position of the key can be recognized by the sense.

Fields of application in which the panel switch plate obtained by using the method of the present invention is particularly suitable include operation panels for various industrial equipment, remote control switches, card calculators, electronic notebooks, and the like.

〔Example〕

Example 1 First, a rubber-based UV-curable resin layer was provided on one side of a sheet base material based on a polyester film having a thickness of 75 to 175 μm, and the resin layer was commercially available in a state of being covered with a cover film. Flexographic printing plate (WF95
BSIIN, manufactured by Fuji Film Co., Ltd.) was prepared, and a printing layer representing a state in which a plurality of keys were arranged was provided on the surface of the sheet base material on which the resin layer was not applied.

Then, on the print layer side, a print layer protection film (polyester film,
(Thickness: 30 μm), and after curing the adhesive layer,
The cover film on the resin layer side was removed.

After that, a baking film provided with an exposed portion and a light-shielding portion was laminated on the resin layer surface so as to match the pattern position of the printed layer, and vacuum suction was performed so that the baking film completely adhered to the resin layer surface. Then, ultraviolet rays were irradiated through the baking film to cure only the resin layer at the position corresponding to the exposed portion. A commercially available UV lamp (3KW / cm ² ) was used for UV irradiation at this time, and the irradiation conditions were 3 cm at a distance of 50 cm.
It was set to 0 seconds.

After irradiating with ultraviolet rays, remove the baking film,
The uncured UV curable resin at the position corresponding to the light shielding part,
The convex switch part was formed by developing and removing with warm water (30 degreeC). Furthermore, after that, remove the developing solution attached using gauze and dry with a drier (30-40 ° C,
5-10 minutes).

Finally, in order to complete the curing of the resin layer, the surface of the resin layer was again irradiated with ultraviolet rays under the same conditions as above to obtain a panel switch plate having the sectional structure shown in FIG. .

Example 2 Two baking films were provided in which the exposed portion and the light-shielding portion were arranged so as to show the arrangement of keys, and the patterns on the front and back sides were aligned with each other and arranged with an interval of about 2.5 mm. An ultraviolet curable resin (manufactured by Tokyo Ohka Kogyo Co., Ltd.) was injected into the cavity formed as described above. Then, both sides were simultaneously irradiated with ultraviolet rays through the baking film. For UV irradiation at this time, a commercially available UV lamp (3KW / cm ² )
The irradiation conditions for each surface were set to a distance of 50 cm for 30 seconds.

After that, the baking film is removed, and the uncured ultraviolet curable resin at the position corresponding to the light shielding part is
By developing with 1-trichloroethane and removing it, convex switch portions were formed on both front and back surfaces. Furthermore, after that, rinsing was performed using a rinsing liquid (1,1,1-trichloroethane) and drying (30 ° C. × 5 to 10 minutes) was performed by a dryer.

And finally, in order to complete the effect of the resin, the surface of the resin is again irradiated with ultraviolet rays under the same conditions as described above, and the sheet base material and the convex switch part are made of the ultraviolet curable resin. A panel switch plate integrally formed was obtained.

〔The invention's effect〕

Since the panel switch plate obtained by the method of the present invention has the convex switch portion formed on the surface on the side where the finger comes into contact, the position of the switch can be easily confirmed when operating the key, and when operating the key, The touch feeling of the finger is also excellent.

Moreover, in the present invention, since a flexographic printing plate which is commercially available in the state where an ultraviolet curable resin is applied can be used, an expensive mold is unnecessary, and a panel switch plate having a convex switch portion can be easily used. Can be manufactured.

Further, in the method of the present invention, the baking film is set afterwards in accordance with the pattern printed on the sheet base material, so that the panel switch plate with extremely excellent positional accuracy of the convex switch portion can be obtained. .

Furthermore, in the present invention, when a sheet base material provided with an ultraviolet curable resin layer on both sides or a sheet made of an ultraviolet curable resin is used, the ultraviolet irradiation step and the developing step can be performed simultaneously on both sides, It is possible to easily manufacture the panel switch plate having the convex switch portions on both the operation surface with which the key contacts and the surface with which the key top contacts. In the panel switch plate thus obtained, not only the touch feeling of the finger at the time of operation becomes excellent, but also
Since the contact with the key top is made partially, the switch operation becomes more accurate.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a panel switch plate having a convex switch portion on one surface obtained by the method of the present invention, and FIG. 2 is a convex switch on both sides obtained by the method of the present invention. FIG. 3 is a cross-sectional view showing an example of a panel switch plate having parts, and FIG. 3 is a view showing that in the manufacture of the panel switch plate shown in FIG. 1, a printing layer is provided on the back surface side of a commercially available flexographic printing plate sheet base material. 4 is a cross-sectional view of the flexographic printing plate shown in FIG. 3 on the back side of which a printing layer protective film is attached via an adhesive layer and then the cover film is removed. FIG. 5 is a cross-sectional view when a baking film is brought into close contact with the surface of the resin layer shown in FIG. (1) …… Sheet base material (2) …… Convex switch section (3) …… Printing layer (4) …… Adhesive layer (5) …… Printing protective film (6) …… Resin layer ( 7) …… Cover film (8) …… Film for printing (9) …… Exposure area (10) …… Light-shielding area

Claims (3)

[Claims] 1. An exposure part (9) and a light-shielding part (10) are provided on the resin layer (6) side of a sheet substrate (1) having a resin layer (6) made of an ultraviolet curable resin on at least one side. The baking film (8) is closely adhered and laminated, and the baking film (8) is irradiated with ultraviolet rays, then the baking film (8) is removed, and then the position corresponding to the light shielding part (10) is obtained. The uncured UV-curable resin is developed and removed using water or an organic solvent to remove the convex switch portion (2) on the key operation surface side of the sheet base material (1).
A method for manufacturing a panel switch plate, the method comprising: 2. A resin layer (6) made of an ultraviolet curable resin is formed on one surface of the sheet substrate (1), and a printing layer (3) is formed on the other surface. Claim 1
A method for manufacturing the above described panel switch plate. 3. A baking film (8) provided with an exposed part (9) and a light-shielding part (10) is adhered and laminated on both front and back surfaces of a sheet made of an ultraviolet curable resin, and then the baking film is formed. Both sides are simultaneously irradiated with ultraviolet light through (8), then the baking film (8) is removed, and the uncured ultraviolet curable resin at the position corresponding to the light shielding part (10) is developed using water or an organic solvent. A panel switch board manufacturing method, characterized in that convex switch portions (2) are formed on both sides of the key operation front surface side and the back surface side of the sheet by removing the convex switch portions (2).