JPH0620652Y2 - Vehicle window glass - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a window glass for a vehicle, and more particularly to improvement of a masking portion of a peripheral portion of the window glass for a vehicle.

[Prior Art] Generally, a lower portion of a windshield of an automobile has a structure in which a windshield 1 is fixed to an instrument panel 2 with a molding 3 as shown in FIG. Usually, the back surface 3a of the molding 3 is left with the scratches during molding and the dirt when the metal foil is attached, so that the transparent windshield 1
When the back surface 3a of the molding 3 enters the visible range of the driver or the passenger, the appearance is bad and the appearance of the front part of the vehicle is significantly impaired.

Therefore, conventionally, masking 5 is applied to the peripheral portion of the windshield where the line of sight A of the person in the vehicle is transmitted and the back surface 3a of the molding 3 is in view.
I try not to see a.

Conventionally, a smoke-colored coating is applied to an inorganic glass window glass as such masking. However, coloring the inorganic glass is technically extremely difficult and costly.

A hard-coated injection-molded article or a sheet-molded article having a deep bend or a sharp bend in the window glass made of organic glass is masked by the following steps (1) to (3).

Cover the non-painted area (glass alternative surface) with tape and paper, and expose the masking planned surface to create a boundary (partition) between the painted surface and the unpainted surface.

Make a scratch on the surface to be masked using a paper file or sandblast.

Painting by spraying.

Bake the paint in a drying oven.

After leaving the furnace and cooling, tape attached to the glass alternative surface,
Carefully peel off the paper carefully so that the cut lines are not uneven.

Further, in the case of a shallow-bent or flat plate-shaped organic window glass as a sheet-formed product, the above steps are performed after coating by screen printing as in the case of general glass masking.

[Problems to be solved by the invention] Among the conventional masking coating methods described above, the ones that go through the steps of to have a large number of masking steps, resulting in very poor productivity, as well as tape attachment, coating, and coating. It takes a lot of skill to peel off the tape afterwards, and it is extremely difficult to form a clean parting with no irregularities due to poor adhesion between the hard coat surface and the masking agent, and workability is also poor. Moreover, there is a problem of peeling of the masking coating film due to poor adhesion between the hard coat surface and the masking agent, resulting in poor production yield.

Although the screen-printing method has good productivity to some extent, the masking coating step still poses a major problem in terms of window glass productivity and cost.

[Means for Solving Problems] The vehicle window glass of the present invention is provided with a colored resin formed by coloring the same resin as the resin forming the transparent glass portion with a pigment on the entire periphery of the transparent glass portion. A vehicle window glass made of organic glass, which is formed by forming a colored portion for masking on the same surface as the transparent glass portion, wherein the transparent glass portion and the colored portion are formed by injection molding by a multicolor molding method. A transparent glass part is first molded and then a colored part is formed, and the colored part is formed so that a colored layer and a non-colored layer are present in a cross section in the thickness direction of the glass. Is characterized by.

[Operation] In the present invention, since the colored portion (masking portion) is integrally formed with the transparent glass portion of the main body by injection molding by the multicolor molding method, the coating process can be completely omitted and the productivity is remarkably increased. The cost can be increased and the cost can be significantly reduced.

Moreover, since the masking portion is not formed by painting, there is no problem such as peeling of the coating film and the durability is good.

Moreover, since the colored portion is formed of a colored resin obtained by coloring the same resin as the resin forming the transparent glass portion with a pigment, the transparent glass portion and the colored portion are well compatible with each other and the bonding property during molding or Good adhesion or integrity after molding.

Embodiments Embodiments will be described below with reference to the drawings.

1 (a) to 1 (c) are schematic cross-sectional views showing an embodiment of a vehicle window glass of the present invention.

The vehicle window glass 10 of the present invention is made of organic glass, and as shown in FIGS. 1 (a) to (c), the entire periphery of the transparent glass portion 11 is injection-molded by a multicolor molding method. The colored portion 12 for masking is formed flush with the transparent glass portion 11.

In the present invention, the colored portion 12 to be formed is the window glass 10
The colored portion is formed so that the colored layer and the non-colored layer are present in the cross section in the thickness direction of the glass.

Such a colored portion 12 is, for example, as shown in FIG.
As shown in (b), various shapes such as a triangle and a U-shape can be used. Further, as shown in FIG. 1 (c), it may be provided only on one surface side of the window glass. In the case of the structure shown in FIG. 1 (c), the colored portion 12 has the transparent glass portion 1
Since it is covered with 1, the colored portion 12 has a beautiful crystal feeling.

In the present invention, the multicolor molding method basically complies with the conventional method, but the mold design structure and molding conditions are appropriately set to obtain the quality as an organic glass window material for vehicles. Preferably. The shape and the like of the colored portion 12 can be easily set by changing the mold design structure.

When the vehicle window glass of the present invention is manufactured by injection molding by a multicolor molding method, the transparent glass portion is molded first, and then the colored portion is molded.

In the present invention, the transparent glass material is preferably a thermoplastic resin such as polycarbonate, acrylic resin, ABC (acrylonitrile / butadiene / styrene) resin, AS (acrylonitrile / styrene) resin or the like because it is easy to mold, It may be a thermosetting resin.

As the material of the colored portion, a colored resin obtained by coloring the resin used as the transparent glass material with an appropriate pigment is used. This colored resin is suitable because it has good compatibility with the transparent portion (bondability or adhesiveness during molding, integrity after molding, etc.).

The vehicle window glass of the present invention can be applied not only to windshields of various vehicles such as cars such as passenger cars and freight cars, trains, but also to rear side windows (triangular windows), roof glass and the like. Generally, the size is 150 cm x 150
It is within cm, but it may be larger than that.

The size of the colored portion to be formed varies depending on the shape and size of the window glass, the purpose of use and the purpose of forming the colored portion, and is appropriately determined. For example, the thickness of the cross section as shown in FIG. If the windshield 10 is t = 2 to 8 mm,
The size of the colored portion 12 to be formed is about a = 0.5 to 2 mm and b = 5 to 30 mm in terms of the values of a and b in FIG.

The vehicle window glass of the present invention may be hard-coated in accordance with a conventional method. In that case, there is no problem such as peeling due to poor adhesion between the hard-coat surface and the masking agent as in the conventional case, and it is extremely good. Adhesive and hard coatable.

1 (a) to (c) and FIG. 3, since the window glass of the present invention is schematically shown, the window glass has a flat plate shape. It goes without saying that it is also applicable to a window glass.

[Advantages of the Invention] As described in detail above, the vehicle window glass of the present invention is a vehicle window glass made of organic glass, in which the entire periphery of the transparent glass portion is colored for masking by injection molding by a multicolor molding method. The transparent glass part is made flush with the same resin that forms the transparent glass part with a pigment, and is made flush with the transparent glass part. Since it can be omitted, the productivity can be remarkably enhanced and the cost can be significantly reduced.

Since the masking portion is not formed by painting, there is no problem such as peeling of the coating film and the durability is good.

The boundary (partition) of the masking part has no irregularities and is extremely beautiful.

The colored part is made of a colored resin that is the same as the resin that forms the transparent glass part and is colored with a pigment. Alternatively, the integrity after molding is good.

And so on.

[Brief description of drawings]

1 (a) to 1 (c) are schematic cross-sectional views showing an embodiment of a vehicle window glass of the present invention, FIG. 2 is a cross-sectional view illustrating a windshield mounting portion of an automobile, and FIG. 3 is a book. 1 is a schematic cross-sectional view of a vehicle window glass of the present invention. 10 ... Vehicle window glass, 11 ... Transparent glass part, 12 ... Colored part.

Claims (1)

[Scope of utility model registration request] 1. A coloring resin formed by coloring the same resin as the resin forming the transparent glass portion with a pigment on the entire peripheral edge portion of the transparent glass portion so as to be flush with the transparent glass portion for masking. A window glass for a vehicle, which is made of organic glass and has a transparent glass portion and a colored portion, which are formed by injection molding by a multicolor molding method to form the transparent glass portion first and then form the colored portion. In addition, the colored portion is formed so that a colored layer and a non-colored layer are present in a cross section in the thickness direction of the glass.