Materials and waste

Part two

Tetra Brik

We’ve shown last week that each material had advantages and disadvantages.

Tetra Brik.

Let’s study Tetra Brik

bottle.

Tetra Brik.

We can see paper outer and

metal (aluminium) inside.

Tetra Brik.

We’re trying to separate the

materials.

Tetra Brik.

Tetra Brik.

Tetra Brik.

We found :

Paper

Aluminium

Plastic (three times)

cardboard

Tetra Brik.

Tetra Brik.

We found six layers whichare, from air to drink :

1 - plastic2 - paper3 - cardboard4 - plastic5 - aluminium6 - plastic

Tetra Brik.

Why plastic ?

Tetra Brik.

Why plastic ?

Because plastic is watertight.

Tetra Brik.

Why cardboard ?

Tetra Brik.

Why cardboard ?

Because without cardboard the bottle would get out of shape.

Tetra Brik.

Why paper ?

Tetra Brik.

Why paper ?

Because on paper it’s easy to write and draw.

Tetra Brik.

Why aluminium ?

Tetra Brik.

Why aluminium ?

Because aluminium protect drink from air (oxygen).

Tetra Brik.

Tetra Brik… the end.

Goodbye…

The french team.