JPH0549426U - Synthetic resin car window - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Excellent weather resistance, heat resistance, cold resistance, impact resistance, scratch resistance, and chemical resistance. Even if it breaks, there is a danger that sharp fragments will scatter. Nonetheless, a synthetic resin automobile window that can be used as an automobile window instead of a glass window to reduce the weight of the automobile and further reduce costs. [Structure] Window plate material 11 molded from polycarbonate resin
A vinylidene fluoride / acrylic laminate film 12 having a thickness of the vinylidene fluoride film 12 of 10 μm or more and an acrylic film 12 of 50 μm or more is laminated and adhered to the surface of the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to, for example, a triangular window fixed to the left and right of a rear seat of a vehicle, a window used for a rear rear window, a vertical window, and the like, and more specifically, it is made of conventional glass. The present invention relates to a synthetic resin automobile window made by making these automobile windows with a synthetic resin.

[0002]

[Prior Art]

 Conventionally, glass windows have been used for fixed windows in the rear seats and rear windows as described above, as well as automotive windows such as vertical windows. However, in recent years, reducing the weight of the entire automobile, including measures to comply with the CAFE regulations in the United States, has become an urgent issue in the industry, and one way to do so is to use conventional glass windows with synthetic resin. Further, since glass windows are time-consuming to manufacture and costly, it is desired to use synthetic resin for automobile windows from the viewpoints of mass production and cost reduction.

When the glass window of the conventional automobile is made of synthetic resin as described above, it is necessary to satisfy the following conditions. That is, first of all, it is of course superior in transparency because it is a substitute for glass, but in addition, in addition to weather resistance, heat resistance, cold resistance and impact resistance, it can be used in severe environments such as automobiles. Excellent in abrasion resistance and scratch resistance. In addition, it is highly likely that gasoline, etc. will adhere, and it has excellent chemical resistance to these. Furthermore, in case of an accident or the like, even if it breaks, sharp debris will not scatter. In addition, it is necessary to satisfy various conditions such as the ability to print patterns such as ceramic patterns and designs in terms of design.

[0004]

[Problems to be solved by the device]

 As a synthetic resin material having transparency instead of glass, there are methacrylic resin, polycarbonate resin, acrylonitrile / styrene resin, polystyrene resin and the like. However, in the case of the above-mentioned methacrylic resin, acrylonitrile-styrene resin, polystyrene resin, etc., there are problems in heat resistance, cold resistance, impact resistance, etc. when used as automobile windows, and these synthetic resin materials In the case of, there is a risk that sharp debris may scatter when broken, which is dangerous. Therefore, among these resins, polycarbonate resin is most suitable. However, even in the case of this polycarbonate, problems remain in weather resistance, scratch resistance, chemical resistance and the like.

In view of the above points, the present invention is excellent in weather resistance, heat resistance, cold resistance, impact resistance, scratch resistance, and chemical resistance required for windows for automobiles, and is sharp even if broken. It is intended to provide a synthetic resin automobile window that can reduce the weight of the automobile and further reduce the cost by adopting it as an automobile window instead of a glass window without the risk of scattering fragments. is there.

[0006]

[Means for Solving the Problems]

 The above-mentioned object of the present invention is a synthetic resin automobile in which a transparent synthetic resin film having excellent weather resistance, scratch resistance, chemical resistance, etc. is laminated and adhered on the surface of a window plate material molded of polycarbonate resin. Achieved by windows.

Examples of the transparent synthetic resin film include acrylic rubber-modified acrylic resin film, polyethylene terephthalate resin film, and vinylidene fluoride / acrylic laminate film, which are used in the present invention. The film is required to satisfy the following conditions. That is, it has a large elongation when heated and can be vacuum formed. This is particularly important in the case of manufacturing by laminating and adhering integrally with the polycarbonate constituting the window plate material. It has excellent transparency. This is a condition naturally required because the object of the present invention is a window. Good heat and cold resistance. This makes it possible to supplement the heat resistance and cold resistance of the polycarbonate forming the window plate material. Printing is possible. It has excellent weather resistance and does not discolor even after long-term use. This is a condition naturally required for automobile windows. Good adhesion to the polycarbonate molded product. This is a condition naturally required for the configuration of the present invention. When the molten resin of polycarbonate is injected, it withstands the temperature and is not dragged by the flow of the molten resin to cause misalignment or wrinkling. It is a condition required in the manufacturing process. Furthermore, it has excellent chemical resistance. In particular, in the case of automobile windows, there is a high possibility that gasoline, etc. will adhere, and it is required that they are not invaded by such gasoline, etc.

As a film satisfying the above various conditions, there is a vinylidene fluoride / acrylic laminate film. In this case, it is preferable to use a vinylidene fluoride film having a thickness of 10 μm or more and an acrylic film having a thickness of 50 μm or more, that is, a total of 60 μm or more. If the thickness of the film is thinner than the above, when the film is integrally laminated and adhered to the polycarbonate window plate material, the film is dragged by the flow of the molten resin at the time of injection of the polycarbonate resin, which causes wrinkles. By setting the thickness of the acrylic film to 100 μm or more, it is possible to completely prevent the generation of wrinkles. Further, with respect to the upper limit of the thickness of this acrylic film, if the thickness is 200 μm or more, there is no great difference in the working effect and it is uneconomical.

An acrylic rubber-modified acrylic film can also be used as the transparent synthetic resin film. However, in this case, the surface of the film is rather soft and easily scratched due to the rubber component contained in the film, so a hard coat is applied to the surface before use.

Then, a desired pattern or pattern is printed in advance on the vinylidene fluoride / acrylic laminate film or the acrylic rubber-modified acrylic film as described above, which is integrally formed on the surface of the polycarbonate window plate material. Can be laminated and glued.

Further, a window frame made of synthetic resin can be integrally provided around the window plate made of polycarbonate.

[0012]

[Action]

 The synthetic resin automobile window according to the present invention as described above has rigidity and is made of a polycarbonate that does not scatter sharp debris even if it breaks. By laminating and adhering transparent synthetic resin films, which have excellent resistance, scratch resistance, chemical resistance, etc., all the conditions required for automobile windows can be satisfied, and because they are made of synthetic resin, they are made of glass. It is a window for automobiles that is lighter than windows, is easy to mass-produce, enables cost reductions, and is easy to print patterns, patterns, etc. and has a high degree of freedom in design.

Furthermore, when a vinylidene fluoride / acrylic laminate film is used as the transparent film laminated / adhered to the polycarbonate, since the vinylidene fluoride film is located on the surface of the window, it has excellent weather resistance and the like. In addition, the strength is high, and the acrylic film that exists between this vinylidene fluoride and the polycarbonate window plate material has good adhesion to both the vinylidene fluoride film on the surface and the polycarbonate of the window plate material. In addition to serving as an adhesive layer that bonds the two, the acrylic film has good printability, which makes it possible to easily apply various patterns and patterns to automobile windows.

Further, in the case of an acrylic rubber-modified acrylic film, the adhesiveness with the polycarbonate constituting the window plate material is good, and the printability is also good. The surface is slightly soft and easily scratched, but by applying a hard coat on the surface, it can withstand use as an automobile window.

Further, since the glass portion of the glass window is made of synthetic resin as described above, the window frame can also be made of synthetic resin and both can be made integrally, and the overall weight of the automobile window can be reduced. To do.

[0016]

【Example】

 Hereinafter, a synthetic resin automobile window according to the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 shows a rear portion of an automobile using a synthetic resin window according to the present invention. The synthetic resin window according to the present invention includes a vertical window 1, a rear window 2, and a rear seat of the automobile. It is adopted as the triangular window 3 etc. fixed to the left and right of the.

As shown in FIG. 2, the vertical window 1 is formed by laminating and adhering a vinylidene fluoride / acrylic laminate film 12 on the surface of a window plate material 11 made of polycarbonate. The vinylidene fluoride / acrylic laminate film 12 The acrylic film is printed with patterns and patterns such as ceramic pattern 13. Further, a protector 14 made of vinyl chloride resin is integrally provided around the window plate material 11 made of polycarbonate described above. Further, a rear spoiler 15 made of synthetic resin can be integrally attached to the vertical window 1.

The fixed triangular window 3 is formed by laminating and adhering a vinylidene fluoride / acrylic laminate film 32 on the surface of a polycarbonate window plate material 31 as in the vertical window 1, and the vinylidene fluoride / acrylic laminate film. The 32 acrylic film portions are printed with a border around the triangular window 3.

A specific manufacturing process of the vertical window 1 or the triangular window 3 will be described with reference to FIG.

First, a transparent film 5 such as an appropriately printed vinylidene fluoride / acrylic laminate film is sandwiched between heating plates 6 and 7 and heated to 100 to 120 ° C., and at the same time, one heating plate 6 is heated. The transparent film 5 is adsorbed on the surface of the heating plate 6 by vacuum suction from a large number of pores 61 provided in the plate (FIG. 5A). In the case of heating and adsorbing the film 5 described above, it is not always necessary to use the two heating plates 6 and 7, and only one heating plate 6 is used to heat the film 5 and the heating plate 6 is placed on the surface of the heating plate 6. It may be adsorbed. After the film 5 is heated to a predetermined temperature, the film 5 is moved to the cavity surface 81 of the movable mold 8 in the molding die for molding the window plate while being sucked and adsorbed by the heating plate 6. By vacuum suctioning the inside of the cavity and sending compressed air from the pores 61 of the heating plate 6, the film 5 is shaped so as to conform to the cavity surface 81 of the mold, and the film 5 is moved to the cavity surface 81. Make them adhere (Fig. 5 (b)). Then, the hot platen 6 is pulled up, the mold 8 is advanced toward the fixed core mold 9 to close the mold, and the polycarbonate resin 10 is injected from the core mold 9 side into the cavity (see FIG. 5 (c)) Cooling, demolding, trimming the excess film part, and stacking and adhering a transparent vinylidene fluoride / acrylic laminating film integrally on the surface of the polycarbonate window plate material. The synthetic resin automobile window according to the invention is completed.

As described above, in the synthetic resin automobile window according to the present invention, molding of the polycarbonate window plate material and lamination / adhesion of the vinylidene fluoride / acrylic laminate film on the surface thereof are performed in a series of steps. Compared with conventional glass windows, it can be mass-produced and the product cost can be reduced. Further, it is possible to integrally form the window frame around the window plate material, so that the manufacturing process of the automobile window can be further rationalized.

[0023]

[Effect of the device]

 As described above, according to the present invention, the weight of the automobile window can be reduced by using the synthetic resin, and the weight reduction of the window facilitates the automobile assembling work. Furthermore, by making the surrounding window frame from synthetic resin and integrating it with the window plate material, manufacturing and assembling work will be easier, and further weight reduction will be possible. Also, by printing on the surface film, it is possible to easily add designs, patterns, etc. to the curved surface part. Moreover, all of the conventional glass plate manufacturing, window frame manufacturing, and printing processes are performed with a series of synthetic resin. It can be carried out in the forming process, can be continuously mass-produced, and can realize cost reduction.

Further, in the case where the vinylidene fluoride / acrylic laminate film is used on the surface, the vinylidene fluoride film excellent in weather resistance, chemical resistance, scratch resistance and the like is located on the outer surface, In addition to being able to withstand the harsh environment of use as an automobile window, the acrylic film on the inner surface allows the vinylidene fluoride film to be reliably laminated and adhered to the polycarbonate used as the window plate material. Since the krill film is easy to print, it is possible to easily add a design or pattern to the curved surface of the glass window. Furthermore, it is possible to adopt the synthetic resin windows in the rear window and the vertical window, and to provide a synthetic resin rear spoiler or the like in these windows.

[Brief description of drawings]

FIG. 1 is a perspective view showing a rear portion of an automobile that employs a synthetic resin window according to the present invention.

FIG. 2 is a perspective view of a vertical window showing an example of the synthetic resin window.

FIG. 3 is a perspective view of the rear triangular fixed window of the same.

FIG. 4 is a sectional view of an embodiment of a synthetic resin automobile window according to the present invention.

FIG. 5 is an explanatory diagram of a manufacturing process of the synthetic resin automobile window, (a) heating a transparent film between two heating plates and adsorbing it to one heating plate; Is a step of bringing the transparent film into close contact with the inner surface of the cavity of the window plate material molding die along the shape of the inner surface of the cavity.
Shows a step of injecting and forming a window plate material with a polycarbonate resin in the cavity formed by closely adhering the transparent film.

[Explanation of symbols]

 1 Vertical Wind 2 Rear Window 3 Triangular Window 5 Transparent Film 6 Hot Plate 7 Hot Plate 8 Cavity Type 9 Core Type 10 Polycarbonate Resin 11 Window Board Material 12 Vinylidene Fluoride / Acrylic Laminate Film 13 Ceramic Pattern 14 Protector 31 Window Board Material 32 Vinylidene Fluoride / Acrylic laminate film 61 Pore 81 Cavity surface

Claims (6)

[Scope of utility model registration request] 1. A synthetic resin, characterized in that a transparent synthetic resin film having excellent weather resistance, scratch resistance, chemical resistance, etc. is laminated and adhered on the surface of a window plate material formed of a polycarbonate resin. Windows for automobiles. 2. The synthetic resin automobile window according to claim 1, wherein a vinylidene fluoride / acrylic laminate film is used as the transparent synthetic resin film. 3. The vinylidene fluoride film has a thickness of 10
The synthetic resin window for an automobile according to claim 2, wherein the window is not less than micron and the thickness of the acrylic film is not less than 50 micron. 4. The synthetic resin automobile window according to claim 1, wherein an acrylic rubber-modified acrylic film is used as the transparent synthetic resin film, and a hard coat is applied to the surface thereof. 5. The synthetic resin automobile window according to claim 2, wherein the acrylic film is printed with a desired pattern or pattern. 6. The synthetic resin automobile window according to claim 1, wherein a synthetic resin window frame is integrally provided around the window plate material.