Glass making process

The glass can be found in several shapes. The picture show us how to make plates and bottle glasses. First, sand, soda, and limestone are mixed and heated in a furnace on a high temperature. Then, the molten is distributed through separate ways, one way for glass plate, and the other for glass bottle. In making glass plate, the molten is entered into a tray as a terminal, then rolled in order to get flat shape, and finally cooled on the fresh air. In making bottle glass, certain pressure is given when the molten fills the tray because air is needed to help the molten covers only the wall of the glass. Similar with the glass plate, the moltened bottle glass is cooled until it becomes solid.