JPH0812377A - Production of lighting window glass - Google Patents

Abstract

PURPOSE:To prevent the generation of bubbles by laminating a transparent film through thermally melt-sticking type sheetlike adhesive on the surface of a window glass to form laminated body and heating the laminated body to integrate the window glass with the transparent film. CONSTITUTION:The laminated body 4 is formed by laminating the transparent films 1 having dew downflow properties through the thermally melt-sticking type sheetlike adhesive 2 on the surface of the plate like window glass 3. Next, the laminated body 4 is charged into an evacuated heating furnace while a plate like cover glass 5 is placed on the upper surface of the transparent film 1 of the laminated body 4 and pressed from the upper side and, after heated to 100-170 deg.C, brought back to normal pressure and cooled by stopping heating. After cooling, the lighting window glass free from wrinkles and bubbles is obtained by removing the cover glass 5.

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 daylighting window glass provided on a roof or a wall for the purpose of daylighting and ventilation in a building.

[0002]

2. Description of the Related Art When a daylighting window provided on a roof of a building or the like has a large indoor / outdoor temperature difference in winter or the like, dew condensation easily occurs on the inner surface of the window glass, and water drops generated by the dew condensation grow. When the size of the window becomes large, there is a problem that it drops directly from the window glass surface and wets the floor surface. In order to solve this problem, the present inventors have proposed Japanese Patent Application No. 6-132807.
In the daylighting window consisting of a window frame and a window glass attached to the window frame, a transparent film having a drip property is attached to the inner surface of the window frame, and the transparent film is attached to the window frame. The invention has invented a daylighting window which is provided with a water receiving portion that receives dew condensation water that occurs on the surface of the water and flows along the direction in which it descends and inclines, and a drainage port that discharges water from the water receiving portion. Here, the drip property of the transparent film means a property that condensed water generated on the surface of the transparent film easily flows down to a lower gradient.

[0003]

However, the transparent film is adhered to the surface of the window glass by applying a liquid adhesive to the surface of the window glass and covering the surface with a transparent film to adhere the transparent film. Then, uneven application of the adhesive occurs, or the adhesive becomes sticky when the transparent film is attached to the surface of the window glass, so that wrinkles and bubbles easily occur. Therefore, there is a problem of poor handling. Furthermore, when a solvent-based adhesive is used, there is also a problem that the solvent remaining without being completely removed fires after adhering the transparent film to generate bubbles. In this case, the translucency of the daylighting window deteriorates and the appearance also deteriorates.

The present invention has been made to solve this problem, and provides a method for adhering a transparent film to a daylighting window glass, which is easy to handle when adhering the window glass and the transparent film and does not generate bubbles after the adhering. It is provided.

[0005]

A method for manufacturing a daylighting window glass according to claim 1 of the present invention is a transparent film having a drip property on a surface of a window glass via a heat-fusion type sheet adhesive. Are laminated to form a laminated body, and the laminated body is heated to integrate the window glass and the transparent film.

Here, the above-mentioned heat-fusion type sheet-like adhesive is a sheet-like sheet having a dry surface at a normal temperature and having a uniform thickness, but it is melted when heat is applied, and is solidified again when cooled. It is what is glued.

The window glass is not particularly limited, and it is cut into a size that can be fitted into the window frame of the daylighting window, and even if it is made of a single glass, it may be plural. It may have a multi-layer structure in which the above glasses are combined. As the multi-layered structure, there may be used tempered glass, wire-reinforced glass such as wire, glass having a color or pattern, and the like, which are laminated and joined.

The transparent film is not particularly limited to a colorless and transparent film as long as it has a light transmitting property.

When heating the laminated body, the laminated body may be pressurized with a uniform force.

A method of manufacturing a daylighting window glass according to claim 2 is the method of manufacturing a daylighting window glass according to claim 1,
It is characterized in that the laminated body is heated under reduced pressure to melt the sheet-like adhesive to integrate the window glass and the transparent film. Here, the term “under reduced pressure” refers to a pressure condition lower than normal pressure, and includes, for example, the case where the pressure is reduced using a vacuum pump or the like.

[0011]

In the method for manufacturing a daylighting window glass according to the first aspect of the present invention, since the sheet adhesive is used as the adhesive for sticking the transparent film to the window glass, the thickness of the adhesive layer is constant. Become. The heat-fusion-type sheet-like adhesive does not become sticky at room temperature and is easy to handle when forming the laminate. When the laminated body is heated, the sheet adhesive melts in a state where the window glass, the sheet adhesive and the transparent film are laminated, and wrinkles and bubbles are not generated, and the window glass is transparent. Integrated with the film. In addition, since the sheet-shaped adhesive does not need to use a solvent, there is no concern that bubbles will be generated due to the residual solvent.

A method for manufacturing a daylighting window glass according to claim 2 is the method for manufacturing a daylighting window glass according to claim 1, wherein
Since the laminated body is heated under reduced pressure, the sheet-shaped adhesive is melted while the air existing between the window glass and the transparent film in the laminated body is discharged, and the window glass and the transparent film are integrated. Turn into. Therefore, bubbles are less likely to be generated.

[0013]

Embodiments of the present invention will be described below.

FIG. 1 (a) is a side view showing an example of the structure of a laminate according to the method for manufacturing a daylighting window glass of the present invention.
FIG. 1B is a side view of a daylighting window glass obtained from the laminated body shown in FIG.

In the method for manufacturing a daylighting window glass according to this embodiment, first, a sheet-like window glass (3) has a drip property on the surface thereof through a heat-fusion type sheet-like adhesive (2). The transparent film (1) was laminated | stacked and the laminated body (4) was formed. On the upper surface of the transparent film (1) of the layered product (4), a plate-shaped cover glass (5) for pressing down from above and enhancing a close contact state was placed and used.

The window glass (3) has a multi-layer structure in which tempered glass and wire-reinforced glass such as wire are joined together by forming an air layer therebetween.

As the sheet-like adhesive (2), Cranbetter (trade name) manufactured by Kurashiki Spinning Co., Ltd. was used.

As the transparent film (1) having the above-mentioned drip property, Tsuyustop (trade name) manufactured by Mitsubishi Corporation was used. The transparent film (1) was laminated so that the surface having a drip property was on the surface side of the laminate (4).

Then, with the cover glass (5) still on the laminated body (4), a vacuum pump of 60 mmH was used.
100 to 130 in a heating furnace depressurized to g or less
After heating to ℃, stop the vacuum pump to return to normal pressure, stop heating, and naturally cool to room temperature while still in the heating furnace. After cooling, the cover glass (5) was removed to obtain a daylighting window glass. This daylighting window glass had a good appearance with no wrinkles or bubbles.

Further, the work for forming the laminate (4) is a simple operation which requires no special skill, and therefore the handling is good.

[0021]

According to the method for manufacturing a daylighting window glass according to claim 1 of the present invention, since the sheet-like adhesive is used as the adhesive for adhering the transparent film to the window glass, the thickness of the adhesive layer Is constant. Further, the heat-fusion-type sheet-like adhesive does not become sticky at room temperature, and is easy to handle when forming the above-mentioned laminate. Further, when the laminated body is heated, the sheet adhesive melts in a state where the window glass, the sheet adhesive and the transparent film are laminated,
Since the window glass and the transparent film are integrated, wrinkles and bubbles are unlikely to occur. In addition, since the sheet-shaped adhesive does not need to use a solvent, there is no concern that bubbles will be generated due to the residual solvent. Therefore, it goes without saying that a daylighting window having excellent daylighting properties can be manufactured.

According to the method for manufacturing a daylighting window glass according to the second aspect, in addition to the above effects, there are also the following effects. That is, since the laminated body is heated under reduced pressure, the sheet-like adhesive is melted while the air present between the window glass and the transparent film in the laminated body is discharged, and the glass and the transparent film are Unify. Therefore, bubbles are less likely to be generated.

[Brief description of drawings]

FIG. 1 (a) is a side view showing an example of the configuration of a laminate according to the method for producing a daylighting window glass of the present invention, and FIG.
[Fig. 4] is a side view of a daylighting window glass obtained from the laminated body shown in (a).

[Explanation of symbols]

 1 Transparent Film 2 Sheet Adhesive 3 Window Glass 4 Laminate

Claims (2)

[Claims] 1. A laminated body is formed by stacking a transparent film having a drip property on the surface of a window glass via a heat-sealing type sheet adhesive to form a laminated body, and the laminated body is heated to produce the window glass. A method for manufacturing a daylighting window glass, which comprises integrating a transparent film with a transparent film. 2. The method for producing a daylighting window glass according to claim 1, wherein the laminated body is heated under reduced pressure to melt the sheet-like adhesive to integrate the window glass and the transparent film.