The diagram shows a method of shaping glass containers. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The graph provides information on the production of the

glass

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containers. Each step of the process has been illustrated highlighting the most significant points.

To begin

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the process a

glass

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has to be collected and crushed. In

such

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a form it is transported to the furnace where at the temperature of 105 degrees Celsius it undergoes a melting process.

Then

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, in a liquid form, it is put the special mould where a hydraulic press presses against the walls of the container.

Subsequently

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, when the press is removed the

glass

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container fills up with air. Before the

glass

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is cooled it has to be removed from the mould and placed in the kiln at a temperature of 482 degrees Celsius. Later, the container is placed in the cooling device at a temperature of 25 degrees Celsius for approximately 60 minutes. Heating it and cooling makes the

glass

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stronger and harder to break. In the end, a factory worker has to check whether the

glass

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is scratch-free and,

therefore

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, good for utilization. Broken

glass

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is thrown away and a good one is sent to the stores to be later sold.