how is the glass made mocomi – mocomi kids
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How Is Glass Made?
Glass is made from a mixture of sand, lime and soda. When these ingredients are heated together, they form a liquid glass. This liquid glass is made into sheets by cooling and flattening. To make objects like vases, craftsmen blow into a blob of liquid glass with the help of a long tube.
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How Is Glass Made?
Sand, lime and soda are heated together in a furnace to make liquid glass. Rollers are used to flatten glass into sheets, which are first cooled then cut.
PLATE GLASS MADE BY ROLLING
Sand Lime Soda
Shaping rollers
Furnance Plate
Cutter
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How Is Glass Made?
Liquid glass from a furnace is floated and slowly cooled on the surface of liquid tin. After the glass has cooled down, it is cut into pieces.
PLATE GLASS MADE BY FLOATING
Sand Lime Soda
FurnanceMolten Metal
Gas to control atmosphere
Heater
Coolingand
cutting
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How Is Glass Made?
HANDMADE GLASSWARE
Vases, ornaments and other in-tricate glass objects are made by a glass-blower. The glass-blower uses a metal blowpipe which has a blob of hot glass at the end of it. A glass blower then blows the soft glass into shape with his hands.
Glasses, window panes, mirrors are few of the many things that are made from glass. Glass is not only useful, but can look beautiful too. Windows made of stained glass are works of art.
GLASS HAS MANY USES
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How Is Glass Made?
ADDITIONAL INFORMATION
Other glass-making ingredients can include alumina, lead oxide, salt peter and zinc oxide which are used to make different types of glass. In the production of plate glass, waste glass from a previous melt is also added, making up 5 to 40 percent of the mixture. Melting takes place in giant furnaces from where molten glass is floated or rolled into sheets.
Sand+Lime+Soda
Rolling Process
Floating Process
Cooling Cutting
FinalProduct
WasteProduct
Alumina/Lead oxide/Salt peter/Zinc oxide
Cooling Cutting Final Product
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Cooling chamber
How Is Glass Made?
Identify different glass objects in your house and notice how each one looks and feels different.
Try making a visit to a glass factory or inquire about a glass-blower and see how they give shape to objects.
Try looking through different glass objects. What do you see?
PROJECT
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