the-BA : Keeping it warm

If you ever order a pizza for delivery you expect it to be piping hot when it arrives. But sometimes the delivery boy has to ride his moped for a fair few miles, through the traffic, to reach his destination. During that time the pizza’s bound to cool down a bit. That’s why pizza packaging tends to be made from some sort of insulating material; usually corrugated cardboard.

Have you ever wondered how long packaging keeps your pizza warm?

You might like to …

Do some research into pizza boxes and other fast-food packaging. Find out what materials are used, and why (this may include research into thermal properties of materials)
Compare the thermal resistance of various materials used in food packaging; things that keep food warm, and things that keep food cold
Find out how Thermos flasks keep liquid hot or cold
Think about the other essential properties of packaging (for example, strength) and design methods to test these properties
Design and/or make a fast-food box and a carrier for a delivery boy’s moped.

Further links:
http://home.howstuffworks.com/thermos.htm

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