Method for manufacturing hollow glass, and hollow glass
AssigneeYazaki Energy System Corporation
InventorTakuju Nakamura
Life of this patent
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Abstract
Plate glasses of the same material are stacked each other to form a hollow portion between the plate glasses. The stacked plate glasses are heated to a temperature which is a softening point thereof or below and is a temperature or above at which the material can be diffusion-bonded at a predetermined pressure or higher. The heated and stacked plate glasses are pressed to a predetermined pressure or higher using a die. Together with or subsequent to the pressing, a gas pressure is applied into the hollow portion by feeding gas into the hollow portion. Next, the stacked plate glasses, in which the gas pressure is applied to the hollow portion, are cooled to the strain point while being held with the die.
Claims10
A method for manufacturing a hollow glass including a hollow portion inside, comprising:
- a first step of stacking plate glasses of the same material each other to form the hollow portion between the plate glasses;
- a second step of heating the stacked plate glasses to a temperature which is a softening point thereof or below and is a temperature or above at which the material can be diffusion-bonded at a predetermined pressure or higher;
- a third step of pressing the heated and stacked plate glasses to a predetermined pressure or higher using a die together with or subsequently applying a gas pressure into the hollow portion by feeding gas into the hollow portion;
- and
- a fourth step of cooling the stacked plate glasses to a strain point while the gas pressure is applied into the hollow portion and the stacked plate glasses are held with the die.
A hollow glass comprising:
- at least two plate glasses;
- and
- a frame glass having a bonding portion bonded with the at least two plate glasses to form a hollow portion between the at least two plate glasses, wherein
- the at least two plate glasses and the frame glass are formed of the same material.
Dependencies are inferred from the claim text.