Making with plastic

Washing up bowl

Plastic bottles are made by blow-moulding.

Hot plastic tubes are put inside a mould. Air is blown into the plastic tube and it blows up like a balloon.

The mould is the shape of the bottle. When it cools, the plastic forms the solid bottle.

The video clip here shows how bottles are made.

 

 

See also: Bowls | Gloves | Pipes