JPH0769663A - Method of cutting laminated glass - Google Patents

Abstract

(57) [Summary] [Construction] When cutting the laminated glass 1 in which the glass 2 is adhered by the intermediate film 3, the glass is broken along a cutting line 4, and then the glass of the intermediate film 3 is adhered by the intermediate film. A method for cutting a laminated glass, in which the glass is cut along a cutting line and then the interlayer film is fused by heat when cutting the glass. [Effect] The interlayer film can be easily and safely cut, and the end surface of the cut glass is not damaged.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for cutting laminated glass.

[0002]

2. Description of the Related Art When cutting laminated glass,
Make a cutting line in the glass with a cutter and break the glass along the cutting line. Then, a razor was inserted into the gap between the broken glass and the intermediate film was cut along the cutting line. However, as the thickness of the glass becomes thicker, the gap between the broken glass becomes narrower, the blade of the razor is hard to reach the intermediate film, and there is a problem that the work of cutting the intermediate film is difficult.

Further, since a razor is thin and has low strength, it has a problem that it is easily damaged and lacks safety and has a short life.
Further, as a result of widening the gap of the broken glass for inserting the razor, there is a problem that the broken glass come into contact with each other and the end face is damaged.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above problems of the prior art, facilitates the work of cutting the intermediate film and is excellent in safety, and the breakage of the end face of the cut glass is unlikely to occur. It is intended to provide a method for cutting laminated glass.

[0005]

DISCLOSURE OF THE INVENTION The present invention is a method for cutting a laminated glass in which glass is cut along a cutting line and then the intermediate film is fused by heat when cutting the laminated glass in which glass is adhered by an intermediate film. is there.

A description will be given below with reference to the drawings. Figure 1
1 is a side view of an apparatus for implementing the present invention. In the figure, 2
Is glass, 3 is an intermediate film, and 4 is a cutting line.

As shown in the figure, a laminated glass 1 is composed of two sheets of glass 2 and 2 bonded together by an intermediate film 3. This laminated glass is placed on a cutting table 8, and first, a glass cutter such as diamond is used to cut the cutting lines 4 and 4 into the two glasses 2 and 2. The position of this cutting line is usually one in which two cutters are integrated so that the two glasses do not shift from each other.

Then, bending stress is applied to the cut lines to break the glass 2 and 2 along the cut lines 4 and 4. Next, the motor 5 is driven, and the electric heater 6 located below as shown by the one-dot chain line is rotated as shown by the arrow to move below the cutting line of the laminated glass. Then, the intermediate film is heated by the electric heater 6 and blown along the cutting line. At this time, the interlayer film can be easily fused by pulling one end (A) of the laminated glass while slightly lifting it. 7 is a reflector.

Next, the motor is driven to return the electric heater 6 to the original position shown by the chain line. About 800 to 1000 W is sufficient as the capacity of the electric heater 6, and 30
The intermediate film can be fused by heating for about 90 seconds. In addition,
The laminated glass according to the present invention is not limited to a flat plate shape and may be a curved plate shape.

[0010]

According to the present invention, the interlayer film can be easily and safely cut, and the end surface of the cut glass is not damaged.

[Brief description of drawings]

1 is a side view of an apparatus embodying the present invention.

[Explanation of symbols]

 1: Laminated glass 2: Glass 3: Intermediate film 4: Cutting line 6: Electrothermal heater

Claims (1)

[Claims] 1. A method for cutting a laminated glass, which comprises cutting the glass along a cutting line and then fusing the intermediate film by heat when cutting the laminated glass in which the glass is adhered by an intermediate film.