JP2908997B2 - Adhesion method of light shielding film for wind glass - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a light-shielding film for a window glass, and more particularly to a method for attaching a light-shielding film to a surface having a large curvature such as a rear window glass in an automobile. The present invention relates to a method for attaching a light-shielding film for a window glass, which can appropriately attach the film.

[0002]

2. Description of the Related Art In general, a window glass is made of a synthetic resin film having a light-shielding property in an automobile, for the purpose of blocking ultraviolet rays to prevent adverse effects on the human body and improving heat insulation inside the automobile. Is affixed.

The film is composed of a translucent base film having a light-shielding property and a transparent separator called liner paper. When the film is attached to a window glass, the separator is peeled off and only the base film is used. .

In such a light-shielding film, for example, a conventional method of sticking to a rear window glass of an automobile having a cubic curved surface is as follows. First, the light-shielding film is cut in accordance with the form of the window glass and then cut. Is further divided into a plurality of pieces, and each of the pieces is separated from the separator and then adhered to the window glass in order.

The purpose of dividing the light-shielding film into a plurality of parts is to properly adhere the film to the glass surface, and if one surface is applied at a time, a portion having a large curvature will wrinkle. No.

[0006]

However, when the film is cut, the seam of each piece appears as a striped pattern, which has the disadvantage of significantly impairing the appearance. Further, the seam portion is easily peeled, and the peeling usually progresses to such an extent that the aesthetic appearance is impaired in a short period of 2 to 3 years, and there is a drawback that the durability is very poor. Furthermore, if the number of pieces increases, the work becomes more complicated and the number of man-hours increases. Therefore, there is a disadvantage in that even a skilled worker requires a few hours to complete one side, thereby deteriorating work efficiency.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made to be able to be constructed with a single film that does not divide one surface of a window glass. The light-shielding film formed by laminating is cut in accordance with the form of the window glass, and after attaching the base film side of the light-shielding film to the surface of the window glass, the peripheral edge of the light-shielding film is pressed while being heated. Curving the light-shielding film along the form of the wind glass, then peeling off the separator from the light-shielding film, the light-shielding film for wind glass, characterized in that the adhesive surface side of one base film is adhered to the inner surface of the wind glass Is provided.

[0008] Further, as a more preferred means of the present invention, a light-shielding film formed by laminating a base film and a separator is polymerized with a pattern formed according to the form of a window glass, and the light-shielding film is formed along the periphery of the pattern. After cutting the film, the base film side of the light-shielding film is adhered to the surface of the window glass to which lubricity has previously been imparted, and then the moisture between the light-shielding film and the window glass is appropriately removed. Is pressurized while heating to bend the light-shielding film along the form of the window glass, then the separator is peeled off from the light-shielding film, and the adhesive side of one base film is brought into close contact with the inner surface of the window glass. The present invention provides a method for attaching a light-shielding film for a wind glass.

[0009]

According to the present invention, a light-shielding film conforming to the form of a window glass can be obtained by superposing a pattern on a light-shielding film and cutting the light-shielding film along the periphery of the pattern. Then, the base film side of the light-shielding film is attached to the surface of the window glass. At this time, since the lubricating property is imparted by spraying a detergent liquid or the like on the surface of the window glass in advance, the adhesive force of the base film is reduced, so that the positioning thereof is facilitated.

On the other hand, when lubricity is imparted by using a lubricating liquid such as a detergent liquid, by appropriately removing the water, the light-shielding film adheres to a predetermined location, and the position is accurately determined. Then, when the peripheral portion of the light-shielding film is heated by warm air or the like in that state, the portion is thermally contracted. Therefore, when the contracted portion is pressed using a spatula or the like, the peripheral portion of the light-shielding film undergoes plastic deformation along the window glass to be curved, and the shape of the window glass is transferred.

The so-called smoke window is completed by removing the separator from the light-shielding film and bringing the adhesive side of one base film into close contact with the inner surface of the window glass.

[0012]

FIG. 1 is a plan view of an automobile, wherein 1 is a front window glass, 2 is a rear window glass, and 3 is a door window. It is glass.

FIG. 2 is a sectional view taken along line AA in FIG.
FIG. 3 shows a cross section taken along line BB in FIG. As can be seen from these figures, the rear window glass 2 forms a cubic curved surface that is largely curved in the vertical and horizontal directions. In particular, as shown in FIG. 2, the horizontal edges 2a, 2a have sharp changes in curvature. ing. Although the form differs depending on the vehicle type, it is customary that the curvatures of the vertical and horizontal edges 2a and 2b are sharply increased.

According to the present invention, a film having a light-shielding property can be continuously adhered to one surface of a window glass forming a secondary or cubic curved surface, such as the window glass 2. Will be described in detail below.

First, a pattern formed on the light-shielding film according to, for example, the shape of the window glass 2 is superimposed, and the light-shielding film is cut along the periphery of the pattern with a cutter knife or the like. Thus, a light-shielding film having a predetermined shape to be adhered to the substrate is obtained. FIG. 4 shows the state, in which F is a light-shielding film, R
Is a pattern.

In FIG. 4, a broken line is a cut portion, and this portion is a point approximately 1 to 2 cm away from the periphery of the pattern R in consideration of the fact that the light-shielding film F is thermally contracted as described later. And The pattern R is a thin sheet such as a synthetic resin or paper, and is formed in advance according to the form of the window glass 2 or the like as described above. Further, the light-shielding film F is wound around a predetermined roll, and a necessary amount can be appropriately cut out.

As shown in FIG. 5, the light-shielding film F is formed by laminating a base film f and a separator g via an adhesive layer h. The base film f is a translucent synthetic resin film colored in brown, gray, etc.
For example, it is made of a heat-shrinkable, light-shielding, flexible, and heat-insulating material such as polyester. The separator g is a transparent synthetic resin film such as polyethylene, and the adhesive layer h is made of a synthetic resin adhesive.

The adhesive layer h is used as a base film f
Is applied to one side of the base film f, which is the adhesive face fa of the base film f.

By the way, the cut light shielding film F '
As a next procedure, as shown in FIG.
The side is adhered to the surface 21 of the window glass 2. At this time, the surface 21 of the window glass 2 is sprayed with a lubricating liquid such as a neutral detergent liquid appropriately diluted with water in advance by spraying or the like. Has been granted. This is for the purpose of reducing the adhesive force of the light-shielding film F ′, whereby the light-shielding film F ′ can be easily positioned with respect to the surface 21 of the window glass 2. The same effect can be obtained by spraying a predetermined lubricating liquid on the base film f side of the light shielding film F '.

After the light-shielding film F 'is attached to the surface 21 of the window glass 2, the light-shielding film F' is next applied.
The water such as the neutral detergent solution between the glass and the window glass 2 is appropriately removed by using a spatula or the like, whereby the adhesion of the light-shielding film F 'to the window glass 2 is improved, and the position is determined. The Rukoto. In this state, the peripheral edge F of the light shielding film F 'shown in FIG.
1, F2, F3, and F4 are particularly wrinkled in a portion of the window glass 2 where the curvature is particularly large.

Then, as a next procedure, the peripheral edges F1 to F4 of the light-shielding film F 'are shrunk by heating using a commercially available dryer or the like. It is to be pressed against the glass 2. Then, the peripheral portions F1 to F4 of the light-shielding film F 'are plastically deformed and curved along the curvature of the window glass 2, and the entire surface comes into close contact with the window glass 2 without wrinkling.

Then, as a final finish, the light-shielding film F 'on which the shape of the window glass 2 has been transferred is peeled off from the window glass 2 and the peripheral end e is cut off as shown in FIG. The separator of the light-shielding film F ″ is peeled off, and the adhesive surface of one of the base films f is brought into close contact with the inner surface 22 of the window glass 2 as shown in FIG.
Is adhered to one surface without wrinkling, and a smoke glass with a sense of unity is formed in harmony with the window glass 2.

At this time, a lubricating liquid such as a neutral detergent solution is sprayed on the inner surface 22 of the window glass 2 in advance by spraying or the like to impart lubricity, and after positioning the base film f at an appropriate position, a spatula etc. It is desirable that the lubricating liquid is removed by using.

In the above-described embodiment, the rear window glass 2 of the vehicle is illustrated. However, the present invention can of course be applied to another window glass having a large curvature. For example, the front window of the vehicle shown in FIG. A light-shielding film, in particular, a base film thereof can be stuck to the window glass 1 in series.

[0025]

According to the present invention, the light-shielding film is heated by utilizing the heat shrinkage of the light-shielding film, particularly the base film adhered to the window glass, and is shrunk to match the curvature of the window glass. So that
One surface of the window glass can be finished at a time with one light-shielding film.

Therefore, workability can be greatly improved as compared with the conventional method in which the light-shielding film is divided and attached.

In particular, according to the present invention, there is no seam on the finished surface, and therefore the peeling action can be suppressed, so that a remarkable effect that durability can be improved is obtained. In addition, since a striped pattern due to the seam does not appear, an aesthetic effect is enhanced, which is a special effect.

[Brief description of the drawings]

FIG. 1 is a plan view showing an automobile.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG. 1;

FIG. 4 is a plan view showing a state where the light shielding film is cut.

FIG. 5 is a cross-sectional view showing a state where a part of a light-shielding film is enlarged.

FIG. 6 is a cross-sectional view of a main part showing a state where a light-shielding film is attached to the surface of a window glass.

FIG. 7 is a front view showing the rear side of the automobile as an example of the operation of heating the peripheral portion of the light-shielding film.

FIG. 8 is a perspective view showing a light shielding film after being heated.

FIG. 9 is a perspective view showing a rear side in a vehicle as an example of an operation of attaching a base film obtained by removing a separator from the light-shielding film to a window glass.

[Explanation of symbols]

 1, 2, 3 Wind glass 21 Surface 22 Inner surface R type paper F, F ', F "Light-shielding film f Base film fa Adhesive surface F1 to F4 Peripheral edge g Separator h Adhesive layer

Claims (2)

(57) [Claims] 1. A light-shielding film formed by laminating a base film and a separator is cut in accordance with the form of a window glass, and the base film side of the light-shielding film is adhered to the surface of the window glass. Pressing the peripheral portion while applying heat to bend the light-shielding film along the form of the window glass, then peeling off the separator from the light-shielding film, and bringing the adhesive side of one base film into close contact with the inner surface of the window glass. A method for adhering a light-shielding film for window glass, characterized by comprising: 2. A light-shielding film formed by laminating a base film and a separator is polymerized with a pattern formed in accordance with the form of a window glass, and the light-shielding film is cut along the periphery of the pattern. The base film side is adhered to the surface of the window glass to which lubricity has previously been imparted, and then the moisture between the light shielding film and the window glass is appropriately removed. Curing the film according to the form of the wind glass, then peeling off the separator from the light-shielding film, and adhering the light-shielding film for the wind glass, wherein the adhesive side of one base film is adhered to the inner surface of the wind glass. How to wear.