JPS60226434A - Manufacture of roof tile made of glass - Google Patents

Abstract

PURPOSE:To obtain a large-sized glass roofing tile having excellent strength, safety, etc., and suitable for the lightening tile, etc., at a low cost, by heating and bending a glass plate, and hot-pressing or sintering and solidifying the plurality of obtained bent glass plates interposing an adhesive sheet therebetween. CONSTITUTION:Two diagonal corners of a pair of glass plates are cut (1a), and the plates are bent in a furnace using separate bending forms. The upper bent glass plate 2 and the lower bent glass plate 3 are placed interposing an adhesive sheet 4a (e.g. polyvinyl butyl resin sheet for laminated glass, or a nonwoven sheet impregnated with water glass) therebetween, and the whole assembly is hot-pressed or baked and solidified to obtain the objective glass roofing tile 5. A large-sized tile can be manufactured in high productivity by a simple apparatus. Even if the tile 5 is broken, the piece of the broken glass is held in the state attached to the adhesive sheet 4a to prevent the scattering of pieces.

Description

[Detailed description of the invention] (Technical field) The present invention relates to a method for manufacturing a single glass roof tile.

(Front technology) Traditionally, a single glass tile is generally manufactured by pouring molten glass into a mold and forming it, but according to this method, the maximum size is about 30cm square. It was impossible to manufacture a single glass tile of a larger size than this.

In addition, in manufacturing molten glass, a glass material blending device, a crucible for melting, a heating device for the same, etc. are required, resulting in a disadvantage that the equipment is complicated and large-scale.

Furthermore, the mold itself must be capable of very precise temperature control in order to slowly cool the glass after molding, and in order to manufacture large tiles, it is necessary to There were problems such as the need for considerable ingenuity in injection.

In addition, one glass tile manufactured by conventional methods is
They generally have low strength, and large sizes have drawbacks such as a lack of safety performance when used in living spaces.

(Object of the Invention) The present invention was proposed in order to eliminate the above-mentioned drawbacks, and its purpose is to be able to easily produce one large glass tile using simple manufacturing equipment and at a low location. High quantity with strength and safety! Our goal is to provide a single glass tile that is unique.

(Disclosure of the Invention) Hereinafter, the manufacturing process of a single glass tile according to the present invention will be explained along with the drawings.

A1) First, as shown in FIG. 1(A), two large glass plates 1 are formed by cutting a commercially available plate glass into rectangular shapes.
Diagonal corners of these glass plates 1 are cut out to form cutout portions 1a, respectively.

(Operation 0) Next, these glass plates 1 are bent and formed using separate molds in a heating furnace to form an upper bent glass plate 2 and a lower bent glass plate 3 as shown in FIG. 1 (b). do.

■, Then, as shown in Figure 1 (c), the upper plate bent glass 2
A polyvinyl butyl (P, V, B) tree for laminated glass with an adhesive sheet is placed between the lower bent glass 3 and the lower bent glass 3.
A or a water glass-impregnated nonwoven fabric 4b obtained by impregnating a nonwoven fabric with water glass is sandwiched.

Cl3 Next, the entire glass tile 5 as shown in FIG. 1(d) is completed by heat-pressing or baking to solidify the whole. The size of one glass tile 5 is, for example, 600 to 70 h+m and 900 to 1000 nm in length and width, respectively.
You can get what you want.

Next, the method of bending and forming the plate glass 1 in the step C2) will be described in detail below with reference to FIG. 2.

(2) First, the edge of the cut plate glass 1 is ceramed onto the glass support and pressing device 6.

-211 Next, the temperature inside the furnace is raised from room temperature to approximately 600 to 650°C, which is the glass softening temperature, using the heating furnace 7.

(2) After that, the plate glass 1 is deformed to fit the lower mold 8.

As for the method of aligning the plate glass '1, a.
Partial heating by the burner 9 due to dead weight fall due to softening Partial heating by the burner 9 Partial heating by the burner 9 Partial heating by the glass support and pressing onto the upper mold 8 by the device 4 2 Molding by the upper mold 10 E Suction provided in the lower mold 8 A combination of suction of the glass plate 1 by the mouth 11 is conceivable.

(■) Temporary glass 1 bent and formed in this way is slowly cooled so as not to leave any distortion.

After bending, the lath 1 of the bent plate is removed from the lower die 8. In order to prevent the lower mold 8 and the glass plate 1 from melting and adhering, it is necessary to apply carbon powder to the lower mold 8 before raising the temperature to improve the mold releasability.

(Effects of the Invention) As described above, according to the present invention, a bent glass is formed by heating a plurality of glass plates and bending each of them,
Since an adhesive sheet is sandwiched between these bent glasses and the whole is heat-pressed or baked to solidify, there are fewer manufacturing restrictions and simpler equipment compared to the conventional method of pouring molten glass into the desired shape. By this method, large-sized roof tiles can be manufactured at a low cost, and there is an advantage that productivity can be twice as high as that obtained by only bending and forming thick plate glass.

In addition, since it has a double hesitation structure, strength can be improved, and
Even if the glass breaks, the broken glass will remain attached to the intermediate adhesive sheet, so the pieces will not scatter and can be safely used as lighting tiles.

Furthermore, when a single glass tile with non-woven fabric is used as a lighting tile, the non-woven fabric diffuses sunlight, softens the light, and prevents light sagging. Right.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being an explanatory diagram of the manufacturing process, and FIG. 2 being an explanatory diagram of a method of bending and forming plate glass. '1...Plate glass, 2...Top plate bent glass, 3
...Bottom plate bent glass, 4a...Adhesive sheet I.Polyvinyl butyl resin for laminated glass, 4b.
...Water glass impregnated nonwoven fabric as adhesive sheet, 5...
・・Crow 1 tile% 7・・Heating furnace and 1 other person −゛−

Claims (1)

[Claims] A single glass tile characterized by heating and bending a plurality of glass plates to form bent glass, inserting an adhesive sheet between these bent glasses, and heat-pressing or baking the whole to solidify it. Production method.