JPS6119921Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a laminated glass structure for automobiles.

Generally, automobile window glass materials are attached directly to the window frame using adhesive using the direct grading method, and the adhesive gap is covered with molding, but recently due to design issues, the method shown in Figure 1 is A flat mount method using a thin molding has been proposed. Note that 1 is the window glass, 2 is the window frame of the body, 3 is the adhesive sealant, and 4 is the window frame of the body.
is the primer, 5 is the rubber dam, and 6 is the mall.

However, in this case, the primer coating layer is directly exposed to light from the outside, and the adhesion at the interface with the glass deteriorates, making it impossible to maintain sufficient adhesion to the window glass material over a long period of time. occured. Therefore, a method has been proposed in which a ceramic layer of the same quality as the glass material is baked in the area corresponding to the primer application area of the window glass material to block light from reaching the primer layer, but this requires a high temperature process and the ceramic layer is The drawback is that the paint itself is expensive, and the cost is high.

Therefore, the inventors of the present invention focused on the idea that laminated glass materials with excellent safety in the event of breakage would be used in the future, and as a result of various studies, a pair of inner and outer glass panels were bonded together using a butyral sheet. If a light-shielding resin layer is provided at the interface between the inner glass material and the butyral sheet of the laminated glass material formed by pressure bonding, it will not impede the bonding force of the laminated glass material, compared to the case where it is provided at other interfaces. It was discovered that the same light-shielding effect could be obtained at a lower cost than when the ceramic layer was baked, and the present invention was completed.

That is, as shown in FIGS. 2, 5, and 7, the present invention provides an automobile window glass formed by bonding a pair of inner and outer glass members 1a and 1b with a butyral sheet 1c interposed therebetween. It is intended to provide a laminated glass structure for an automobile in which a light-shielding resin layer 1d is interposed at the interface between the material 1b and the butyral sheet 1c, beyond the region corresponding to the primer 4 application region of the inner glass material.

According to the present invention, as shown in Fig. 2, light from the outside is blocked by the light-shielding resin layer 1d and does not reach the primer layer, so even if the window glass is mounted using the flat mount method, its retention strength is reduced. It is desirable because it can be maintained for a long period of time, and from a design perspective, it creates a sense of unity between the body and the glass. For it,
As shown in FIG. 3, when a light-shielding resin layer 1d is provided at the interface between the outer glass material 1a and the butyral sheet 1c, a light-shielding effect on the primer can be obtained as in the case of FIG. Light hits the adhesive interface of the light-shielding resin layer 1d, and the adhesive surface of the light-shielding resin layer 1d deteriorates. 1d facing the butyral sheet 1c), the outer glass material 1
It has been found that the bonding force between a and the light-shielding resin layer 1d is likely to be inhibited, which is not preferable.

As the light-shielding resin agent, a composition consisting of a glass surface adhesive component consisting of one or more selected from silane coupling agents, silicone resins, and derivatives thereof, a dye or pigment, and an organic solvent is used. , it is preferable to form a layer having a light shielding rate of 90% or more. In particular, JP-A-52-
17519, a primer composition characterized by containing a reaction product of an active aliphatic silane having reactivity with isocyanates and an excess of polyisocyanate, or JP-A-17519-1.
A mixture of an epoxy silane and a silane having a functional group active toward an epoxy group selected from the group consisting of hydroxy, amino, imino, and mercapto, or a reaction product thereof, and (a) film disclosed in Publication No. 65529 From the reaction product of a forming substance, (b) polyisocyanate and (c) polyisocyanate, and a silane having a functional group active towards isocyanate groups selected from the group consisting of hydroxy, amino, imino, mercapto and epoxy. It is preferable to use a primer composition characterized by containing one or more substances selected from the group consisting of:

As pigments and dyes, in addition to carbon black, red iron oxide, amber, zinc yellow, viridian, ultramarine blue, Mars violet, and other metal powders such as aluminum powder and copper powder are used. If aluminum powder is used as one of the pigments, a light-colored dye or pigment can also be used to obtain a high light-shielding rate even in a light color. In addition, if you coat the inner glass material with a dark colored resin layer as the first layer and a light colored resin layer as the second layer on top of it, you can obtain a high light blocking rate while keeping the color visually light. Can be done.

The laminated glass structure according to the present invention is usually produced by coating the light-shielding resin composition 1d on the inner surface of the inner glass material 1b and drying it, then laminating the butyral sheet 1c and the outer glass material 1a and bonding them under heat. It may be manufactured by a method.

When the present invention is applied to the windshield and rear glass of a car, as shown in Fig. 4,
A light-shielding resin layer 1d is formed at least over the area of the interface between the butyral sheet and the inner glass material, which corresponds to the primer application area on the inside of the window glass. Normally, for a window glass of 650 x 1300 mm, a width of about 15 to 50 mm is appropriate. Furthermore, the fifth
The figure shows the installed state of the window glass according to the present invention.
Components that are the same as those in FIG. 1 are given the same numbers and their explanations will be omitted.

When attaching the rearview mirror directly to the window glass, as shown in FIG. glass is used. If the window glass shown in FIG. 6 is used, the installation position is clearly indicated and the work is easy. First, the light-shielding resin layer 1d
Primer 4 is applied to the inner surface of the window glass corresponding to
A pedestal 7a is attached (see FIG. 7).

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the main part showing the window glass mounted on the window frame of an automobile by the flash mount method, and Figs. 2 and 3 are cross-sectional views for explaining the function of the window glass according to the present invention. , FIG. 4 is a plan view showing an example of the window glass according to the present invention, and FIG. 5 is a sectional view of the main part showing the window glass shown in FIG. 4 attached to the window frame of an automobile by the flash mount method. FIG. 6 is a plan view showing another embodiment of the window glass according to the present invention, and FIG. 7 is a sectional view showing a state in which a room mirror is attached to the window glass shown in FIG. 6. 1a...Outer glass material, 1b...Inner glass material, 1c...Butyral sheet, 1d...Light-shielding resin layer, 4...Primer.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In an automobile window glass formed by pressing a pair of inner and outer glass members through a butyral sheet, a primer for the inner glass material is applied to the interface between the butyral sheet and the inner glass material. A laminated glass structure for an automobile, characterized in that a light-shielding resin layer is interposed beyond the corresponding areas. (2) The light-shielding resin layer is coated with a silane coupling agent,
The composition according to item (1), which is formed by applying a composition consisting of a glass surface adhesive component consisting of one or more types selected from silicone resins and derivatives thereof, a dye or pigment, and an organic solvent. structure.