Page 32 - Curriculum Visions Dynamic Book

Aluminium containers
The food and drink industry is the world’s
biggest user of aluminium. Factories that make
aluminium containers account for about one- aluminium was for cooking
third of the world demand for aluminium.
By far the greatest demand is for aluminium
utensils and many pans are still made from aluminium, either with or without nonstick
cans, which have replaced the more traditional coatings. High-quality utensils
tin-plated steel can. The softness of aluminium allows the cans to be pushed into shape (extruded), while the force needed to tear the aluminium by the ring pull opener on drink cans is small because the aluminium has relatively little strength.
Modern packaging uses aluminium interleaved with plastic and paper
to make other forms of carton which can be sealed. This allows liquids to be kept for long periods without the need for refrigeration.
On a quite different scale, because aluminium resists attack by some acids, it can be used
to transport and
store them.
are hardened by anodising (see page 26).
The food processing industry uses aluminium for utensils such as steamers as well as for its packaging.
Cooking utensils
One of the first uses for
 Aluminium-lined containers reflect back the heat. This property is used to help to keep hot food hot and cold food cold.
Aluminium is also easy bent to shape while the aluminium oxide surface does not react with food or become corroded.
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