Monday, March 10, 2008

How to Make The Desired Glass Shape

The key idea in making various shape of glass is to melt the materials so that we can simply form it as we want. Two kinds shape of glass are plate and bottle glass. There are several steps to make these products. First, the materials—sand, soda, and limestone—are mixed in furnace. Then the mixture is heated up so that it is melted and really unified. After that, the mixture is flown into two channels. The first channel is for making plate glass. Through this channel, the mixture is poured into a tank then flown again into plate-shaped hole at the bottom-side of the tank. In this process, to make sure the mixture becomes really plate-shaped, the rollers are used to flatten it perfectly. Finally, the plate-shaped glass is formed. In the second channel, the mixture is desired to be bottle-shaped glass. It is poured into the removable mould which the part-inside has been bottle-shaped. The mixture, of course, also becomes bottle-shaped. At this bottle formation process, air is blown into the part-inside of the mixture. It is needed to produce such a proper pressure so that the inside layer of the bottle-shaped mixture becomes soft and smooth surface. The softer and smoother layer of the products; the better quality it is. After a few hours, the bottle-shaped mixture is cooled down and then the removable mould is removed from it. Finally, the desired bottle glass is ready being used.

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