How is glass blown? Detailed answer

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How is glass blown? Detailed answer

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How is glass blown?

Glass blowing is one of the oldest skills. But as modern mechanisms have been developed, they are favored, and as the need for glass has increased, hand-blown glass is becoming rare. When glass is in a molten state, it can be processed in a variety of ways. It can be blown, pressed, painted or rolled.

For centuries the main method of glass processing was blowing. The glassblower collected a ball of molten glass at the end of a straw and blew it in the same way that we blow soap bubbles. Using his skills, he, blowing, gave the glass a shape and brought it to the desired thickness. He constantly heated the glass to keep it working. Then the master finished processing with special tools. So many types of glass objects were created. Glass can also be molded and thus given its shape.

Surprisingly enough, window glass used to be made by blowing a long cylinder, which was then cut and rolled to make sheets of glass. Of course, the size of these sheets was limited by the strength of the light glass blower.

Today, a similar glass making process called "handmade" is still used in the production of special scientific apparatus or very expensive, magnificent pieces of glass. But the need for glassware such as bottles became so great that every effort was made to create a glass blowing machine, which was finally invented in 1903. The machine uses vacuum to blow enough glass for one bottle. First, the neck of the bottle is formed. Then compressed air is supplied and the entire bottle is blown out. After that, the bottle is automatically fired, hardened, then it is slowly cooled, which makes it durable.

Such a machine is capable of producing more bottles in an hour than 6 people by hand in a day! Later, another machine was created to automatically blow out light bulbs, which allowed the wider use of electric light. Most of all bottles, jars, jugs, glasses and other glass vessels are produced by machine.

Author: Likum A.

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