|University Federico II
of Naples, Italy
Plastics are much softer than metals. They don't make blades, pins or cutting edges.
Plastics don't produce flints like wood, that may penetrate under skin.
Plastics aren't brittle. They don't break or, when they do, they produce smooth surfaces.
Plastics are chemically inert. With a few exceptions, they can be handled even by small children.
Plastics don't conduct electric power. No harm when they come in contact with electric supplies.
Plastics are ideal for making toys. They are much safer than previously used materials.