Method for manufacturing multi-layer stack
An object of the present disclosure is to provide a method for manufacturing a multi-layer stack with excellent mechanical strength and thermal insulation properties. A multi-layer stack includes a glass panel unit, an intermediate film, and a transparent plate attached via the intermediate film to the glass panel unit. The glass panel unit includes a first glass panel, a second glass panel, and an evacuated space interposed between the first glass panel and the second glass panel. The method includes assembling the glass panel unit and the transparent plate together via the intermediate film inside an evacuated chamber.
1 . A method for manufacturing a multi-layer stack,
the multi-layer stack including:
a glass panel unit;
an intermediate film; and
a transparent plate attached via the intermediate film to the glass panel unit,
the glass panel unit including:
a first glass panel;
a second glass panel; and
an evacuated space interposed between the first glass panel and the second glass panel,
the method comprising:
loading, into a chamber, a multi-layer assembly where the glass panel unit is stacked over the transparent plate with the intermediate film interposed between the transparent plate and the glass panel unit; then
evacuating the chamber; and then
making the multi-layer assembly be sandwiched between and heated by a pair of heaters of a heater device installed inside the chamber to assemble the glass panel unit and the transparent plate together via the intermediate film inside the evacuated chamber.
2 . The method of claim 1 , comprising:
assembling, inside the evacuated chamber, the glass panel unit and the transparent plate together via the intermediate film that has been softened by heating; and then
keeping inside of the chamber evacuated until the intermediate film is cured while leaving the glass panel unit, the intermediate film, and the transparent plate loaded inside the chamber.
3 . The method of claim 1 , wherein
the transparent plate has greater rigidity than at least one glass panel, to which the transparent plate is attached via the intermediate film, out of two glass panels that are the first glass panel and the second glass panel.
4 . The method of claim 1 , wherein
at least one glass panel, to which the transparent plate is attached via the intermediate film, out of two glass panels that are the first glass panel and the second glass panel has a thickness equal to or less than 3 mm.
5 . A method for manufacturing a multi-layer stack,
the multi-layer stack including:
a glass panel unit;
an intermediate film; and
a transparent plate attached via the intermediate film to the glass panel unit,
the glass panel unit including:
a first glass panel;
a second glass panel; and
an evacuated space interposed between the first glass panel and the second glass panel,
the method comprising:
loading, into a chamber, a multi-layer assembly, including the glass panel unit, the intermediate film, and the transparent plate attached via the intermediate film to the glass panel unit, then
evacuating the chamber and heating the multi-layer assembly by a heater installed inside the chamber, thereby heating the multi-layer assembly inside the evacuated chamber to soften the intermediate film; and then
keeping inside of the chamber evacuated until the intermediate film is cooled and cured while leaving the multi-layer assembly loaded inside the chamber.
6 . The method of claim 2 , wherein
the transparent plate has greater rigidity than at least one glass panel, to which the transparent plate is attached via the intermediate film, out of two glass panels that are the first glass panel and the second glass panel.
7 . The method of claim 2 , wherein
at least one glass panel, to which the transparent plate is attached via the intermediate film, out of two glass panels that are the first glass panel and the second glass panel has a thickness equal to or less than 3 mm.
8 . The method of claim 3 , wherein
at least one glass panel, to which the transparent plate is attached via the intermediate film, out of two glass panels that are the first glass panel and the second glass panel has a thickness equal to or less than 3 mm.