1. The Joy of Glass
Marcela Carbó

2.  Glass is an inorganic solid material that is
usually clear or translucent with different
colors. It is hard, brittle, and stands up to the
effects of wind, rain or sun.
 Glass has been used for various kinds of
bottles and utensils, mirrors, windows and
more.
 It is thought to have been first created
around 3000 BC, during the bronze age.
Egyptian glass beads date back to about
2500 BC.
History of Glass

3.  Glass is made from a mixture of the
following three ingredients: Sand
(72%), Soda Ash (14%) and Limestone
(12%).
 Recycling reduces the need to quarry for
sand and limestone, which helps to
preserve our valuable countryside.
Glass…

4. History of Glass

5.  Modern glass originated in Alexandria
during the Ptolemaic period, artisans
created "mosaic glass" in which slices of
colored glass were used to create
decorative patterns.
Mosaic Glass

6.  Glassblowing was invented during the 1st
century BC by the glassmakers of Syria.
Glassblowing

7.  During the 15th century in Venice, the
first clear glass called cristallo was
invented and then heavily exported.
 In 1675, glassmaker George Ravenscroft
invented lead crystal glass by adding lead
oxide to Venetian glass.
Lead Crystal Glass

8.  On March 25, 1902, Irving W Colburn
patented the sheet glass drawing
machine, making the mass production of
glass for windows possible.
Sheet Glass

9.  On August 2, 1904, a patent for a "glass
shaping machine" was granted to Michael
Owen.
 The immense production of bottles,
jars, and other containers owes its
inception to this invention.
Glass Jars and Bottles

10.  Glass is collected from our homes by recycling lorries
or from recycling banks by your local council.
 The glass is transported to the processing plant
where it is washed and any rubbish, such as plastic,
is removed.
 The glass is crushed into cullet (small pieces) and is
transported to the glass factory.
 At the glass factory, the cullet is melted in a large
furnace and then molded to make new bottles and
jars.
How is Glass Recycled?

11. •Glass bottles and jars come in three main colors: clear, green and brown.
• The glass is often sorted by color, keeping the clear, brown and green glass
separate.
• If the glass colors are mixed, it lowers the value and quality of the material.

12.  Making new glass from recycled glass uses much less energy
and reduces C02 (carbon dioxide) emissions.
 Recycling glass saves raw materials from being quarried and
then thrown away in rubbish dumps, saving hundreds of
thousands of tones of quarrying each year and conserving the
countryside.
 Each time a tone of glass is made from recycled glass, 1.2
tones of raw are saved.
 Jobs are created by glass collection schemes, and also at
recycling centers, which smash and clean recycled glass.
 By weight, glass makes up about 8% of our rubbish.
 Glass recycling reduces the cost of collecting and the
disposing of glass mixed in with our rubbish.
 Glass can take 1 million years to break down in a landfill.
Why should we recycle glass?

13.  The energy saved by recycling one bottle
will:
◦ Power a computer for 25 minutes
◦ Power a color TV for 20 minutes
◦ Power a 100 watt light bulb for almost an hour
 Glass is 100% recyclable and can be
endlessly recycled with no loss in quality.
 One bottle bank can hold up to 3,000
bottles before it needs to be emptied.
Amazing Facts

14.  More and more people are rediscovering the
virtues of glass packaging.
 Glass protects flavor and freshness.
 It’s a safe, healthy packaging material for
food and beverages.
 Glass is 100% recyclable, forever.
 Glass says quality without even trying.
 When they have the choice, people reach for
their favorite brands in glass.
 Glass is life, for all the right reasons.
The Case for Glass

15.  It's beautiful
 It's collectible
 You can make music with it...
 People love glass—to drink from
 To reuse
Why do people love glass?