JP2002042584A - Manufacturing method for resin window plate material with conductive printed layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a conductive printed layer to be reliably formed even in a resin window plate material having a complicated shape such as a curved surface. SOLUTION: An ink transfer member 17 is pressed against an ink-furnishing unit 13 for furnishing conductive ink 14 in order to transfer the conductive ink 14. After that, the transfer member 17 is pressed against the resin window plate material 9 for the purpose of transferring the conductive ink 14 to the plate material 9, and baking permits the conductive printed layer to be formed in the plate material 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a resin window plate having a conductive printed layer such as a heating wire and an antenna wire, and more particularly, to a resin having a conductive printed layer such as a rear window of an automobile. The present invention relates to a method for manufacturing a window plate.

[0002]

2. Description of the Related Art In recent years, it has been proposed to dispose a transparent resin window plate instead of a glass plate in a window opening of a vehicle or the like. And also in this resin window plate material, in order to remove the fogging due to dew condensation as in the case of the glass plate,
It is conceivable to form a conductive print layer as a heat ray. It is also conceivable to arrange a conductive printed layer as an antenna line on a resin window plate for radio or television reception.

As a method of manufacturing such a resin window plate provided with a heating wire or an antenna wire, for example, a method using a film integrated lamination injection molding method as shown in FIGS. 5 to 7 has been proposed.

In this method, as shown in FIG. 5, a lower mold 2 and an upper mold 3 in which a predetermined cavity space 1 is formed by matching the molds are prepared, and the cavity space 1 of the lower mold 2 is prepared. On the bottom surface, a resin film 5 (or a resin sheet) having the conductive print layer 4 on one side is arranged. The conductive print layer 4 is formed by applying a conductive ink made of, for example, a carbon paste mixed with silver particles to a resin film 5 by a screen or another method along the wiring shape of the conductive print layer.
Integrated into Then, the lower mold 2 and the upper mold 3 are squeezed,
The molten resin material 7 is injected into the cavity 1 from the injection port 6. After cooling, when the mold is released, a resin window plate material 8 in which the conductive print layer 4 is embedded between the resin film 5 and the resin material 7 is obtained as shown in FIGS.

[0005]

However, the method of manufacturing the resin window plate 8 provided with the conductive print layer 4 by using the above-described film-integrated lamination injection molding method has the following problems. When the resin window plate 8 to be manufactured has a complicated shape having a curved portion,
In some cases, the resin window plate 8 cannot be manufactured by the film integral lamination injection molding method. That is, for example, the radius R in the case of a single bending shape is 80 mm or less, or the product of the vertical and horizontal bending radii R is 200,000 (mm ² ) (for example, R500 (m
m) × R400 (mm) = 200000 (mm ² )) When the resin film 5 disposed in the cavity space 1 cannot follow the curved surface of the cavity 1 when the resin material 7 is injected, For this reason, wrinkles are formed on the resin film 5 side of the resin window plate material 8 and the conductive printed layer 4 is formed.
Causes a problem such as disconnection.

Further, the resin film 5 disposed in the cavity space 1 is displaced and the conductive print layer 4 is not arranged as planned, or the resin material 7 wraps around the side of the resin film 5 opposite to the conductive print layer 4. There's a problem.
Furthermore, the film-integrated lamination injection molding method has a technically difficult problem such as a restriction on temperature conditions.

An object of the present invention is to provide a method for manufacturing a resin window plate having a conductive print layer capable of reliably forming a conductive print layer even on a resin window plate having a complicated shape such as a curved surface. Aim.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a method of manufacturing a resin window plate material having a conductive print layer, the ink being capable of supplying a conductive ink corresponding to the wiring shape of the conductive print layer. The conductive ink is transferred to the ink transfer member by pressing the ink transfer member onto the supply device, and then the conductive ink transferred by pressing the ink transfer member onto the positioned resin window plate member is applied to the resin window plate member. A method for producing a resin window plate material provided with a conductive print layer, wherein a conductive print layer is integrally formed on the resin window plate material by transferring and then baking. Thus, the conductive print layer can be reliably formed even on a resin window plate having a complicated shape such as a curved surface.

In the above means, a resin coating may be applied to a surface of the plate material for a resin window on which the conductive print layer is integrated. Thereby, the adhesive strength of the conductive print layer can be increased, the step of the conductive print layer portion in the resin window plate material can be reduced, and the conductive print layer portion can be prevented from being stained.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a resin window plate 9 to which the present embodiment is applied. The resin window plate 9 of this example is used for a rear window of a vehicle, and is formed in a predetermined size and shape to cover an opening of the rear window. The resin window plate 9 is positioned at a predetermined position by the positioning device 10 with the surface provided with the conductive print layer facing upward. The positioning device 10 of FIG. 1 includes a fixed rod 11 and a moving rod 12 to perform positioning. In the rear window, since a conductive printed layer is generally arranged on the inner surface of the vehicle, the inner surface which is concavely curved is arranged upward. At this time, there are cases where a hard coat layer is formed on the vehicle outer side surface of the resin window plate 9 and cases where it is not formed.

In FIG. 2A, reference numeral 13 denotes an ink supply device. The ink supply device 13 applies a conductive ink 14 made of, for example, a carbon paste mixed with silver particles along the wiring shape of the conductive print layer. The supply unit 15 includes a supply unit 15 that can supply the conductive ink 14 with the thickness of the wiring of the conductive wire print, and an ink table 16 that receives the conductive ink 14 when the supply unit 15 rotates. In addition to the above-described configuration, the ink supply device 13 may be, for example, a bleeding method in which the conductive ink bleeds along the arrangement shape of the conductive print layer, or a coating method in which the shape conforms to the arrangement shape of the conductive print layer. A projecting and retracting method in which the tool is extended upward and supplied from a state in which the tool is immersed inside the conductive ink,
Other schemes can be used.

In FIG. 2B, reference numeral 17 denotes an ink transfer member.
6, the conductive ink 14 supplied to the wiring shape on the ink base 16 can be copied on the lower surface. Further, the ink transfer body 17 can transfer the conductive ink 14 transferred to the lower surface thereof to the resin window plate 9 by pressing the ink transfer member 17 against the resin window plate 9. The ink transfer member 17 may be made of an elastic material such as a dandelion, or may be a material in which a transfer sheet such as a cloth capable of transferring to the surface of the elastic material is sequentially moved by a roll. Is also good.

FIG. 3 shows a heating device 18 such as an oven. The resin window plate 9 to which the conductive ink 14 has been transferred according to FIG. 2B is removed from the positioning device 10 and housed inside the heating device 18. Then, by performing baking by heating, the resin window plate 9 in which the conductive print layer 19 is integrally formed as shown in FIG. 4 is obtained.

Next, a procedure for carrying out the method of the present invention using the above apparatus will be described.

As shown in FIG. 1, the resin window plate 9 is supplied to the positioning device 10 and positioned so that the surface on which the conductive print layer is formed faces upward. The resin window plate material 9 such as a rear window is disposed such that the concave shape on the inside of the vehicle faces upward.

As shown in FIG. 2A, the ink transfer member 17 is pressed against the ink table 16 of the ink supply device 13, and the conductive ink 14 on the ink table 16 is transferred to the lower surface of the ink transfer member 17.

Subsequently, the ink transfer member 17 obtained by copying the conductive ink 14 from the ink supply device 13 is placed in FIG.
The conductive ink 14 transferred to the lower surface of the ink transfer member 17 is transferred to the resin window plate 9 by pressing the resin window plate 9 positioned as shown in FIG.

Next, the resin window plate 9 to which the conductive ink 14 has been transferred is removed from the positioning device 10 and housed inside the heating device 18 shown in FIG. Baking is performed by heating with a heating device 18. Thus, the resin window plate 9 in which the conductive print layer 19 is integrally formed as shown in FIG. 4 is obtained.

Further, as described above, a resin coating may be applied to the surface where the conductive print layer 19 is integrated with the resin window plate 9. When the resin coating is applied in this manner, the adhesive strength of the conductive print layer 19 can be increased, the level difference of the conductive print layer 19 in the resin window plate 9 can be reduced, and the conductive print layer 19 can be prevented from being stained. The effect can be expected.

The ink supply device 13 as described above
In addition to the transfer method using the ink transfer member 17, a conductive ink is printed on the film in advance along the wiring shape of the conductive print layer, and the film is pressed against the surface of the resin window plate while heating the film. The conductive printed layer can also be formed on the surface of the resin window plate by transferring it to the resin window plate and then peeling off the film.

The method for producing a resin window plate material according to the present invention has a technically difficult problem with the film-pair lamination injection molding method. The curved resin window plate material has a curvature radius R of 80 (mm) or less. It is useful when applied to a resin window plate having a product of the vertical and horizontal bending radii R of the resin window plate of 200,000 (mm ² ) or less.

The present invention is not limited only to the above-described embodiment, and a single resin plate,
It can be applied to various resin plates such as multi-color molded resin plate, film-integrated laminated injection molded resin plate, various types of ink supply device and ink transfer body can be adopted, and the resin window plate material is rear It is needless to say that the present invention can be applied not only to the window but also to the side window and other parts, and that various changes can be made without departing from the gist of the present invention.

[0023]

According to the present invention, there is an excellent effect that a conductive printed layer can be reliably formed even on a resin window plate having a complicated shape such as a curved surface.

Further, when a resin coating is applied to a surface where the conductive print layer is integrated with the resin window plate material,
Effects such as increasing the adhesive strength of the conductive print layer, reducing the level difference in the conductive print layer portion of the resin window plate, and preventing the conductive print layer portion from being stained can be expected.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a resin window plate is positioned in the present invention.

FIG. 2A is a perspective view showing a state in which an ink transfer member is pressed against an ink supply device to transfer conductive ink to the ink transfer member, and FIG. 2B is a diagram showing a state in which the ink transfer member is pressed against a plate material for a resin window; FIG. 3 is a perspective view of a state in which is transferred to a resin window plate.

FIG. 3 is a perspective view of a heating device according to the present invention.

FIG. 4 is a perspective view of a resin window plate in which a conductive print layer obtained according to the present invention is integrally formed.

FIG. 5 is a cross-sectional view showing an example of an apparatus for manufacturing a resin window plate provided with a conductive print layer using a conventional film-integrated lamination injection molding method.

6 is a cross-sectional view of a resin window plate provided with a conductive print layer manufactured by the apparatus of FIG. 5;

FIG. 7 is a plan view of a resin window plate provided with the conductive print layer of FIG. 6;

[Explanation of symbols]

 Reference Signs List 9 resin window plate material 10 positioning device 13 ink supply device 14 conductive ink 17 ink transfer body 18 heating device 19 conductive print layer

Claims (2)

[Claims] 1. A method for manufacturing a resin window plate material having a conductive print layer, comprising: pressing an ink transfer member into an ink supply device capable of supplying conductive ink in accordance with a wiring shape of the conductive print layer. Then, the conductive ink is transferred onto the ink transfer member, and then the conductive ink is transferred onto the resin window plate by pressing the ink transfer member onto the positioned resin window plate, and then printed. A method for manufacturing a resin window plate provided with a conductive print layer, wherein a conductive print layer is formed integrally with the resin window plate. 2. The method according to claim 1, wherein a resin coating is applied to a surface of the resin window plate on which the conductive print layer is integrated.