JPS5940777B2 - Manufacturing method of laminated glass plate using adhesive film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a laminated glass plate using a double-sided adhesive transparent film (hereinafter referred to as double-sided adhesive film) having adhesive layers on both sides of a synthetic resin transparent film.

The present inventors have previously developed a simple method for manufacturing a laminated glass plate using an adhesive film.

(Patent application 52-76175, 52-136191, 52
-136192, 53-164324, 54-387,
54-58695). According to these methods, when manufacturing a laminated glass plate in which a plastic film having an adhesive layer on the surface is used as an interlayer film and glass plates are adhered to both sides of the interlayer, the adhesion between the adhesive layer and the glass plate is performed. A defoaming agent liquid having an appropriate surface tension and viscosity, such as a silicate ester liquid such as tetraoctyl silicate, is present on the surface, and when the plastic film is pressure-bonded to the glass plate, it is generated between the adhesive layer and the glass plate. A laminated glass sheet is produced by expelling air bubbles from the bonding surface together with a defoaming agent liquid.

The object of the present invention is to provide a laminated glass plate with a film or sheet that has been provided with special functions such as reflectivity, conductivity, variable color (photochromism), printing, patterning, coloration, X-ray blocking properties, etc. by coating or by the film itself. A laminated glass plate is manufactured using a film for which it is difficult or inconvenient to apply an adhesive in advance to the surface of the film (hereinafter referred to as a non-adhesive film) when it is incorporated into one of the constituent layers of a laminate comprising a provide a method to do so.

According to the present invention, when manufacturing a laminated glass plate using a double-sided adhesive film and a non-adhesive film having a special function and having no adhesive layer, (a) a double-sided adhesive film 2 is attached to both sides of a glass plate 1; Pressing and bonding in the presence of a defoaming agent liquid;
(b) Pressing and bonding the non-adhesive film 3 to the exposed surface of the double-sided adhesive film (the opposite side of the glass plate) in the presence of a defoaming agent liquid; (c) Next, the exposed surface of the non-adhesive film , a step of pressing and adhering the double-sided adhesive film 4 in the presence of a defoaming agent liquid; The present invention relates to a method for manufacturing a laminated glass plate using an adhesive film, which comprises: pressing and bonding one glass plate 5;

FIG. 1 shows a cross-sectional view of a laminated glass plate manufactured by the method of the present invention.

In the figure, 1 and 5 indicate glass plates, which constitute the outer surface of the laminated glass plate of the present invention.

2 and 4 indicate double-sided adhesive films, and 3 indicates a non-adhesive film.

The adhesive layer 6 of the double-sided adhesive film 2 is adhered to the glass plate 1, and the adhesive layer 7 on the other side is adhered to the non-adhesive film 3. On the other hand, the adhesive layer 9 of the double-sided adhesive film 4 is adhered to the glass plate 5, and the adhesive layer 8 is adhered to the non-adhesive film 3. In carrying out the present invention, first of all, a double-sided adhesive film is pressure-bonded to the inner surface of a glass plate.

A double-sided adhesive film is a film made of polyester resin, polypropylene resin, polycarbonate resin, Nikan resin, polyethylene resin, acrylic ester resin, etc., and must be transparent (including colored and transparent), have a smooth surface, and have a smooth surface. A synthetic resin transparent film, especially both sides of a polyester resin film, that satisfies various requirements such as having the toughness to not break even if the board is destroyed, not changing dimensions due to changes in temperature and humidity, and being weather resistant. A pressure-sensitive adhesive or pressure-sensitive adhesive layer is applied to the surface.

As the adhesive, a polymer or copolymer of acrylic ester, particularly a copolymer prepared by adding a small amount of vinyl acetate to acrylic ester, is suitably used. When adhering a double-sided adhesive film to the inner surface of a glass plate, a defoaming agent liquid is present between the glass plate surface and the adhesive layer to eliminate air bubbles generated or remaining between the glass plate and the film. When a film is pressed onto a glass plate with a roll, squeegee, etc., it is squeezed out from the adhesive surface along with the defoaming agent liquid.

As the defoaming agent liquid, stylic silicate or tetraalcosilane represented by the general formula Si(0R)4, particularly tetraoctyl silicate Si(0C6H17)4, is preferably used.
Next, a non-adhesive film is adhered to the exposed adhesive layer of the double-sided adhesive film adhered to the glass plate.

For adhesion, a defoaming agent liquid is similarly supplied to the adhesive surface, and while squeezing out air bubbles, the non-adhesive film is pressed against the double-sided adhesive film with a roll, squeegee, etc. Non-adhesive films include, for example, polyester resin films with printed patterns, reflective metals such as aluminum, or reflective and/or conductive films with conductive metal oxides such as SnO2 and In2O3 deposited on both or one side of the film. Film is used.

Next, another double-sided adhesive film is similarly pressed onto the exposed surface of the non-adhesive film in the presence of a defoaming agent liquid,
Finally, press and adhere another glass plate onto the double-sided adhesive film.

After completing the above operations, it is preferable to perform pressurization and heat treatment.

Both treatments may be performed at the same time, but preferably the pressure treatment is performed first and then the heat treatment. Alternatively, pressure is applied, and the pressure is set to a value of 0.01 to 1K7/d1, preferably 0.06 to 0.3K7/d, and the pressure is applied from just before the heat treatment to the end of the heat treatment.

During the heat treatment, the laminated glass plate is heated in a heating furnace at a temperature of 40 to 200°C, preferably 50 to 11°C while continuing the pressure treatment.
Heat at 0°C for 5 minutes to 10 hours.

Due to the pressure treatment, tiny invisible bubbles remaining on the bonding surface of the glass plate and film are released into the plasticizer under pressure.
It dissolves in the adhesive layer and prevents the appearance of bubbles during heat treatment that would otherwise occur if this treatment was not performed. The heat treatment rapidly improves the compatibility between the adhesive and the plasticizer, and significantly increases the adhesive strength between the film and the glass plate.

In the laminated glass plate manufactured as described above, the film with special functions is double protected by the adhesive film and the glass plate, so there is a risk of deterioration in the external environment such as light rays and outside air. Less is.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a laminated glass plate manufactured by the method of the present invention. 1, 5... Glass plate, 2, 4... Double-sided adhesive film, 3... Non-adhesive film, 6, 7
, 8, 9... adhesive layer.

Claims (1)

[Claims] 1. A double-sided adhesive transparent film (hereinafter referred to as a double-sided adhesive film) having adhesive layers on both sides of a synthetic resin transparent film and a non-adhesive film having a special function and having no adhesive layer are used. When manufacturing a laminated glass plate, (a) Glass plate 1
(b) Applying the non-adhesive film 3 to the exposed surface (the opposite side of the glass plate) of the double-sided adhesive film in the presence of a defoaming agent liquid. (c) Next, pressing and bonding the double-sided adhesive film 4 on the exposed surface of the non-adhesive film in the presence of a defoaming agent liquid; and (d) (c) step. Another glass plate 5 is placed on the exposed surface of the double-sided adhesive film that has been glued together in the presence of a defoaming agent liquid.
A method for manufacturing a laminated glass plate using double-sided adhesive film, which comprises: pressing and adhering;